| JTEKT CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20160138726 | PRESSURE REDUCTION VALVE AND GAS SUPPLY DEVICE - The pressure reduction valve includes: a cylindrical portion, a piston and a spring. The cylindrical portion includes an inlet communicating with the primary side flow path and an outlet communicating with the secondary side flow path. The piston fitted into the cylindrical portion is slidable along an axis direction of the cylindrical portion within the cylindrical portion, and defines, within the cylindrical portion, a space communicating with the inlet and the outlet. The spring applies, to the piston, a force acting toward the space. The outlet is displaced in one direction from the center of the piston when seen in the axis direction. The force applied to the piston by the spring is distributed so as to deviate from the center of the piston to the side of the outlet. | 05-19-2016 |
| 20160136768 | MACHINING APPARATUS AND MACHINING METHOD - A machining apparatus includes: a workpiece spindle having a retainer that retains a workpiece having a noncircular peripheral surface; an adjustment unit that adjusts a retaining force between the workpiece and the retainer; a phase determination member that can determine a phase of the workpiece; and a phase determination detection unit that detects completion of the phase determination. The retaining force is a retaining force for phase determination until the phase determination is completed, and the retaining force is switched to a retaining force for machining which is larger than the retaining force for phase determination after the phase determination is completed. | 05-19-2016 |
| 20160131257 | SEALING DEVICE - A sealing device which allows the man-hour for mounting the sealing device to be reduced is provided. A sealing device includes: a slinger fitted and fixed to an end portion of an inner shaft; a core metal fitted and fixed to an end portion of an outer ring; an inner seal lip fixed to the core metal and in slidable contact with the slinger; an outer seal lip fixed to the core metal radially outward of the inner seal lip and in slidable contact with a side surface of a flange portion; and a labyrinth lip fixed to the core metal radially outward of the outer seal lip and forming a labyrinth seal together with the side surface of the flange portion. | 05-12-2016 |
| 20160129511 | GEAR MACHINING DEVICE AND GEAR MACHINING METHOD - A gear machining device for machining a gear by using a machining tool which has a rotation axis inclined relative to a rotation axis of a workpiece and feeding the machining tool relatively in the rotation axis direction of the workpiece by rotating the machining tool in synchronization with a rotation of the workpiece. The gear machining device includes a tool state memorizing portion for memorizing a tool state including a position or a posture of the machining tool relative to the workpiece for machining a tooth bottom, first and second side surfaces of the gear and a machining control portion for controlling machining of the workpiece under each tool state of the machining tool memorized in the tool state memorizing portion. | 05-12-2016 |
| 20160111945 | METHOD FOR MANUFACTURING AN INTERIOR PERMANENT MAGNET ROTOR UNIT AND MAGNETIZING DEVICE - A radial magnetizing part including permanent magnets is disposed so as to face a rotor unit in a radial direction of the rotor unit. Axial magnetizing parts are disposed on both end faces in an axial direction of the rotor unit. The axial magnetizing parts include low magnetic permeability portions and high magnetic permeability portions. The low magnetic permeability portions are disposed so as to face magnet materials. Magnetic flux from the N pole of the permanent magnet of the radial magnetizing part enters a core in the radial direction, crosses the magnet material, and returns to the S pole of the permanent magnet. The magnetic flux from the N pole of the permanent magnet of the radial magnetizing part also enters the core through the high magnetic permeability portions of the axial magnetizing parts, crosses the magnet material, and returns to the S pole of the permanent magnet. | 04-21-2016 |
| 20160107676 | STEERING APPARATUS - A steering apparatus includes a first member which rotates together with an operation lever which is operated to rotate and a third member which is supported rotatably via a friction reducing mechanism by a second member which is restricted from rotating. A cam mechanism which brings a fixed side plate into press contact with a column side plate includes an axially facing surface which is provided on the first member and on which a cam surface is formed, an axially facing surface which is provided on the third member, rolling elements which are interposed between both the axially facing surfaces, and a retainer which holds the rolling elements and which is restricted from rotating by the second member. | 04-21-2016 |
| 20160102749 | DAMPER PULLEY MANUFACTURING METHOD AND DAMPER PULLEY MANUFACTURING APPARATUS - A damper pulley manufacturing method includes an arranging process in which a circular hub having a cylindrical outer peripheral surface and a circular pulley having a cylindrical inner peripheral surface are arranged such that the cylindrical outer peripheral surface opposes the cylindrical inner peripheral surface, a centering process in which a tapered portion of a first centering jig is made to abut on an axial end portion of the hub and a tapered portion of a second centering jig is made to abut on an axial end portion of the pulley to perform centering of the hub and the pulley, and a press-fitting process in which after the centering process, a damper rubber is press-fitted between the cylindrical outer peripheral surface and the cylindrical inner peripheral surface. | 04-14-2016 |
| 20160102710 | ROLLING BEARING DEVICE - A lubricant supply unit that supplies lubricating oil to a raceway groove of an inner ring is fixed to an outer ring. The lubricant supply unit is provided with a first and second radially separated electrodes used to supply electric power from an external power source to the micropump. Each of the first and second radially separated electrodes is fixed to an outer face of a tank that is stationary relative to the micropump so as to be exposed on the outside of the lubricant supply unit. The first radially separated electrode is arranged so as to be apart from the second radially separated electrode. | 04-14-2016 |
| 20160102655 | POWER GENERATION DEVICE AND ROTATING PORTION SUPPORT STRUCTURE - A power generation device includes a main shaft rotated by an external force, a speed-up gear, a high-speed shaft, a rolling bearing, a power generator, and a one-way clutch disposed between the output gear and the high-speed shaft. In a state where the main shaft is rotating in a positive direction, the one-way clutch integrally rotatably connects the output gear and the high-speed shaft to each other if a rotational speed of the output gear exceeds a rotational speed of the high-speed shaft, and breaks connection between the output gear and the high-speed shaft if the rotational speed of the output gear becomes lower than the rotational speed of the high-speed shaft. | 04-14-2016 |
| 20160096227 | MAIN SPINDLE DEVICE OF MACHINE TOOL - A main spindle device includes: a main spindle; a rod accommodated in the main spindle, the rod being capable of moving to an unclamp position in a direction toward the first end, and when the main spindle is holding a tool, being capable of moving to a clamp position in a direction toward a second end; a biasing unit that biases the rod in the direction toward the second end with respect to the main spindle and that biases the rod to the clamp position when a collet is holding the tool; and a biasing force detector that detects a biasing force of the biasing unit which biases the rod in the direction toward the second end after the rod is moved in the direction toward the first end with respect to the main spindle to the unclamp position by force larger than the biasing force of the biasing unit. | 04-07-2016 |
| 20160076794 | MACHINE TOOL - A machine tool includes a thermoacoustic apparatus and a fluid supply apparatus, utilizes exhaust heat from a constituent apparatus of the machine tool to cool a heat exchanger included in the thermoacoustic apparatus due to a thermoacoustic effect. Thus, a cooling fluid is cooled which is used to cool a bearing and a machining point. | 03-17-2016 |
| 20160075052 | APPARATUS AND METHOD FOR MANUFACTURING AN ELECTRICITY STORAGE MATERIAL - An apparatus for manufacturing an electricity storage material includes: a dissolving device that dissolves a thickener in a solvent; a viscosity adjusting device that adjusts viscosity of the solution of the thickener; a stirring device that mixes the solution of the thickener adjusted in viscosity and powder of an active substance to produce a first mixture, and stirs the first mixture to produce a second mixture; a heating device that heats the solution of the thickener or the first mixture by the time the stirring of the first mixture is started after the solution of the thickener is produced, so as to heat the solution of the thickener contained in the first mixture; and a kneading device that kneads the solution of the thickener and the powder of the active substance which are contained in the second mixture to produce a third mixture. | 03-17-2016 |
| 20160069395 | INTERMEDIATE SHAFT - In an intermediate shaft for a steering system, the surface of external splines of an inner shaft is coated with a resin coating layer containing a base resin and two or more kinds of higher fatty acid metal salts having different melting point peaks from each other. | 03-10-2016 |
| 20160059381 | GRINDING WHEEL TRUING METHOD AND GRINDING MACHINE FOR CARRYING OUT TRUING METHOD - In a grinding wheel truing method of an aspect of the present invention, an outer peripheral surface of a grinding wheel is trued while a position of a truer with respect to the grinding wheel is moved from one end side toward the other end side in the axial direction of the grinding wheel. In the truing, a relative movement speed of the truer when a position of the outer peripheral surface of the grinding wheel which grinds a large-diameter portion of a conical surface of a work is trued is lower than a relative movement speed of the truer when a position of the outer peripheral surface of the grinding wheel which grinds a small-diameter portion of the conical surface of the work is trued. | 03-03-2016 |
| 20160040761 | Chain Continuously Variable Transmission - When a chain is wound around a pulley, a pin-pulley contact point as a contact point of a pin of the chain with the pulley slides and moves on a conical surface of the pulley. A contact point slip distance, namely the distance by which the pin-pulley contact point moves on the conical surface at this time, is associated with an offset. The offset is the distance between a pin-pin contact point, which is a contact point between the pins at the time the chain is in a linear state, and the pin-pulley contact point in a y-axis direction. Offsets that minimize the contact point slip distance at the maximum running radius and the minimum running radius of the chain are obtained, and the offset is set between these values. The pin-pulley contact point is set close to the pin-pin contact point of the chain in the linear state. | 02-11-2016 |
| 20160040729 | POWER GENERATION DEVICE AND ONE-WAY CLUTCH STRUCTURE - A one-way clutch structure includes: a pair of clutch members disposed between an output shaft and a drive shaft so as to oppose each other in an axial direction; and an engagement element interposed between these clutch members. When a rotation speed of the output shaft exceeds a rotation speed of the drive shaft, the engagement element engages with the clutch portion to connect the output shaft and the drive shaft so as to be integrally rotatable. When the rotation speed of the output shaft becomes lower than the rotation speed of the drive shaft, the engagement of the engagement elements is released to cut off connection between the output shaft and the drive shaft. | 02-11-2016 |
| 20160039403 | DEVICE AND METHOD FOR CONTROLLING LIMITED SLIP DIFFERENTIAL - In a control device for a limited slip differential that limits a differential operation of front and rear wheels of a four-wheel-drive vehicle having mounted thereon a vehicle behavior control device that controls a braking force, an ECU that controls a torque coupling as the limited slip differential includes: a differential limiting force calculating device that calculates target torque of the torque coupling based on a vehicle traveling state; a differential limiting force correcting device that makes a correction to reduce the target torque based on a command from the vehicle behavior control device; and a thermal load calculating device that calculates a thermal load of the torque coupling. The differential limiting force correcting device limits the correction of the target torque based on the command from the vehicle behavior control device, when the thermal load of the torque coupling is equal to or larger than a predetermined value. | 02-11-2016 |
| 20160032984 | TRIPOD CONSTANT VELOCITY JOINT - A tripod constant velocity joint includes, an outer race, a tripod, an inside member, a plurality of rolling elements, and a holding member. The inside member includes a fitted part having a non-cylindrical outer peripheral surface, the holding member includes a fitting part that has a non-cylindrical inner peripheral surface and is fitted to the fitted part, and the holding member is unable to rotate relative to the inside member as the fitted part and the fitting part are fitted to each other. | 02-04-2016 |
| 20160025137 | ROLLING BEARING APPARATUS AND LUBRICATION UNIT - A rolling bearing apparatus includes a lubrication unit provided adjacently to an annular space formed between an inner ring and an outer ring. The lubrication unit includes a tank that stores a lubricant to be supplied to an annular space and that has an outlet portion through which the lubricant flows out. The tank has a flexible bag in which the lubricant is stored. The bag is filled with the lubricant and allows the lubricant to flow out through the outlet portion as a volume of the bag decreases. | 01-28-2016 |
| 20160025092 | ELECTRIC PUMP UNIT - An electric pump unit is provided that ensures capability for lubricating a plain bearing and in which a lubricating oil passage is formed with a simple structure. This pump unit includes: a pump in which a rotor placed in a pump chamber of a pump housing rotates; and an electric motor having a motor shaft coupled to the rotor. The motor shaft is rotatably supported by a cylindrical plain bearing disposed in the pump housing. An oil seal is provided on the opposite side to the pump chamber with the plain bearing between so as to be located between the pump housing and the motor shaft. Oil supply grooves are formed in an inner peripheral surface of the plain bearing so as to extend through the plain bearing in an axial direction. | 01-28-2016 |
| 20160023550 | FOUR-WHEEL DRIVE VEHICLE AND METHOD FOR CONTROLLING FOUR-WHEEL DRIVE VEHICLE - A four-wheel drive vehicle are provided which enable enhancement of responsiveness to switching from a two-wheel drive state to a four-wheel drive state. A four-wheel drive vehicle includes a driving force transmission and cut-off apparatus that enables cut-off of transmission of a driving force from an engine to a propeller shaft, a driving shaft that rotates under a tuning force of the propeller shaft, a pair of hydraulic clutches and each disposed between the driving shaft and a corresponding one of rear wheels, and a control apparatus that controls a hydraulic unit that supplies hydraulic oil to the hydraulic clutches. In shifting the two-wheel drive state to the four-wheel drive state, the control apparatus controls the hydraulic unit such that a higher priority is given to supply of the hydraulic oil to first hydraulic clutch than to supply of the hydraulic oil to second hydraulic clutch. | 01-28-2016 |
| 20160017923 | Ball Bearing - A ball bearing includes: an inner ring having an inner ring raceway surface on its outer circumference; an outer ring having an outer ring raceway surface on its inner circumference; a plurality of balls are disposed between the inner and outer ring raceway surfaces; and a cage. In the outer circumference of the inner ring, an inner ring shoulder portion is provided on a first axial side of the inner ring and a counter bore is provided on a second axial side of the inner ring. A tapered surface extending radially outward toward the ball is formed in a portion that is in a circumferential wall of each pocket hole, and that is in an end on a first axial side of the cage. | 01-21-2016 |
| 20160003306 | CROSS SHAFT JOINT AND STEERING DEVICE FOR VEHICLE USING THE SAME - A cross shaft joint includes a cross shaft including four shaft parts, needle rollers rolling on outer peripheral faces of the shaft parts, bearing cups each having a cylindrical part, and a bottom part, and externally fitted to the shaft parts via the needle rollers, and yokes provided with bearing holes into which the bearing cups are inserted. The needle rollers are maintained in a tight fit state between the shaft parts and the bearing cups. Each cylindrical part is provided with a projected part projected radially inward of the cylindrical part in a curved shape, at an inner peripheral side thereof, and an apex of the projected part is in contact with the needle roller within a range in an axial direction of the needle roller, the range containing an axial center of the needle roller in the axial direction. | 01-07-2016 |
| 20150364737 | METHOD FOR DRYING SEPARATOR FOR NON-AQUEOUS ELECTRIC STORAGE DEVICE AND METHOD FOR MANUFACTURING ELECTRIC STORAGE APPARATUS - In a method for drying a separator for a non-aqueous electric storage device including an organic material that thermally shrinks at a thermal shrinkage start temperature of 100° C. or lower, a solvent impregnation and a drying are executed in this order; the solvent impregnation includes bringing the separator into contact with a solvent that has affinity for water and that causes the azeotropic phenomenon at a temperature lower than the boiling point of water so as to lower an azeotropic temperature of a mixture of moisture in the separator and the solvent below a temperature at which the separator starts thermal shrinkage, and the drying includes drying the separator brought into contact with the solvent at a temperature lower than a temperature at which the separator starts thermal shrinkage and higher than the azeotropic point. | 12-17-2015 |
| 20150360874 | CONVEYANCE SYSTEM FOR MACHINING APPARATUS - A conveyance system is provided which conveys an object to a machining apparatus using a conveying apparatus and which further enables power saving. A controller calculates a first conveyance completion estimated time when conveyance from a first mounting position to machining apparatuses at a reference speed is complete. If a request to load a next object into the machining apparatus is issued by the machining apparatus, the controller decides a first moving speed of a conveying apparatus to be a reference speed when the machining apparatus is not performing a machining operation at the first conveyance completion estimated time and to be a low speed lower than the reference speed when the machining apparatus is performing the machining operation at the first conveyance completion estimated time. | 12-17-2015 |
| 20150360405 | APPARATUS FOR MANUFACTURING CONSTANT VELOCITY JOINT BOOT AND METHOD OF MANUFACTURING THE SAME - An apparatus for manufacturing a constant velocity joint boot includes a molding mold that injection-molds a molded body using an inner mold and outer molds. The inner mold has a configuration in which split molds are disposed radially along an outer circumferential surface of a core shaft extending vertically. The manufacturing apparatus has rod-like support members including distal end portions and step surfaces. The distal end portions are inserted into concave portions formed in extension portions of the split molds so that the split molds are supported. The step surfaces abut against the outer circumferential surfaces of the extension portions in the state where the split molds are supported by the distal end portions. | 12-17-2015 |
| 20150360392 | APPARATUS AND METHOD FOR MANUFACTURING AN ELECTRICITY STORAGE MATERIAL - An apparatus and a method for manufacturing an electricity storage material are provided which can avoid defective coating of the electricity storage material. An apparatus for manufacturing an electricity storage material includes: a dissolving device that dissolves a thickener in a solvent; a viscosity adjusting device that adjusts viscosity of a solution produced by the dissolving device; a first filtering device that filters the solution having the viscosity adjusted by the viscosity adjusting device; and a kneading device that kneads the solution filtered by the first filtering device and an active material. Since the apparatus can remove almost all microgels of the thickener by the first filtering device, defective coating can be prevented in the coating of the electricity storage material, and satisfactory electrodes can be manufactured. | 12-17-2015 |
| 20150345572 | DRIVING FORCE TRANSMISSION APPARATUS - A driving force transmission apparatus includes: a meshing member that switches two rotating members between a coupled state and an uncoupled state; a piston member with a plurality of locked portions formed along a circumferential direction; an armature that moves the piston member forward and backward between a first position where the armature presses the piston member in an axial direction and a second position where the armature does not press the piston member; a biasing member that biases the piston member in the opposite direction from the pressing direction of the armature; and a locking member that locks the locked portions. The piston member has a mechanism that mitigates a possible shock when the locking member comes into abutting contact with an abutting contact surface of a first locked portion. | 12-03-2015 |
| 20150345566 | DRIVING FORCE TRANSMISSION DEVICE - A driving force transmission device includes: a switch member that switches a first rotary member and a second rotary member between a coupled state and a decoupled state; a second friction member that generates a frictional force between the rotary members; a piston member that has first to sixth engaged portions formed in the shape of a staircase and that presses the switch member and the second friction member in an axial direction; a biasing mechanism that presses the switch member and the second friction member toward the piston member; and an engaging member that engages with one of the plurality of engaged portions. The engaging member rotates the piston member by sliding on a plurality of tilted surfaces of the plurality of engaged portions, and the piston member is always pressed toward the engaging member by a biasing force of the biasing mechanism. | 12-03-2015 |
| 20150340975 | ROTARY ELECTRICAL MACHINE CONTROL DEVICE - A vehicle control device of a rotary electrical machine control device includes an application voltage generation unit that generates a voltage control signal that is used to apply a power supply voltage to a DC/DC converter at a voltage equal to or higher than the power supply voltage or at a voltage lower than the power supply voltage; and a voltage command value generation unit that generates a motor control signal that controls a drive motor. The voltage command value generation unit performs computation based on overmodulation PWM control as PWM control in the case where the application voltage that is lower than the power supply voltage is applied so as to output the motor control signal having a pulse width longer than a cycle of a PWM carrier. | 11-26-2015 |
| 20150337835 | PUMP - A pump includes: a housing in which a pump chamber accommodating an inner rotor and an outer rotor is formed in a pump chamber formation surface, and an O-ring groove is formed around the pump chamber; an O-ring that is placed in the O-ring groove; and a plate that is attached to the pump chamber formation surface and closely contacts the O-ring to close the pump chamber. Inter-hole grooves connecting to an outer edge of the pump chamber formation surface are formed around the O-ring groove. | 11-26-2015 |
| 20150328745 | MACHINE TOOL WITH SWIVELING TABLE - A machine tool is provided in which chips and the like are prevented from adhering to a sliding surface of an upper surface of a base and a sliding surface of a lower surface of a swiveling table. A machine tool includes a base that has four corners and is shaped to be elongated, a swiveling table that swivels while sliding on an upper surface of the base, and a swiveling cover that is supported by the base or the swiveling table so as to be able to swivel. The swiveling cover protrudes from a widthwise edge of the swiveling table to cover a corner upper surface of the base in a first state where the swiveling table is not present on the corner upper surface, and is housed under the swiveling table in a second state where the swiveling table is present on the corner upper surface. | 11-19-2015 |
| 20150328733 | MACHINE TOOL WITH SWIVELING TABLE - A machine tool that enables a reduction in the amount of deflection of a swiveling table is provided. A machine tool includes a base, a swiveling table that is shaped to be elongate and that swivels while sliding on an upper surface of the base, and an actuator attached to a longitudinal first end of the swiveling table to move a position of the first end of the swiveling table with respect to the base, thereby adjusting a swiveling angle of the swiveling table with respect to the base. The rigidity of the swiveling table against a bending force that bends the swiveling table in a deformed manner in a swiveling plane is set to increase from the longitudinal first end of the swiveling table toward the swiveling center. | 11-19-2015 |
| 20150328704 | GEAR MACHINING DEVICE - A gear machining device is provided which can machine an accurate gear by a cutting process by synchronously rotating a machining tool and a workpiece at a high speed. A machining tool includes roughing cutting teeth for roughing bottom lands and right and left side faces of teeth of a gear, right side face finishing cutting teeth for finishing the right side faces of the teeth, and left side face finishing cutting teeth for finishing the left side faces of the teeth. The cutting teeth thus cut different parts of the teeth of the gear. This can reduce cutting resistance and suppress self-vibration during the cutting process, thereby improving tooth trace accuracy of the gear. | 11-19-2015 |
| 20150328698 | ROTARY TOOL HOLDER - A rotary tool holder is provided which enables effective suppression of possible chattering vibration when a workpiece is machined using a rotary tool. A tool holder that is a rotary tool holder includes a main body that rotates while holding a rotary tool, an additional mass supported by the main body with a radial gap, a fluid path provided in the main body, and a viscoelastic damper configured by a fluid fed to the radial gap between the main body and the additional mass via the fluid path. | 11-19-2015 |
| 20150300482 | VEHICLE DIFFERENTIAL GEAR - A vehicle differential gear includes first and second pinion gears rotatably supported by a differential case; first and second side gears meshing with the first and second pinion gears and each coupled to corresponding one of a pair of output shafts; and a center washer, a first end washer and a second end washer each having a sliding surface that slides with an axial end face of at least one side gear of the first or second side gears, the sliding surface being lubricated by a lubricating oil; wherein a surface treatment for enhancing a solid lubricating property is performed on the washers. | 10-22-2015 |
| 20150298726 | STEERING CONTROL SYSTEM FOR VEHICLE AND STEERING CONTROL METHOD FOR VEHICLE - A steering control system for a vehicle includes an electric motor, a torque sensor, an angular velocity sensor, and a control unit. The electric motor applies assist force to a turning operation of a steering wheel. The torque sensor detects a torque generated in a steering system including the steering wheel and varying with the turning operation. The angular velocity sensor detects an angular velocity generated in the steering system and varying with the turning operation. The control unit computes an assist control amount for the turning operation by using the torque and the angular velocity, and, when an abnormality occurs in a torque detection operation, increases a control amount computed by using the angular velocity among control amounts that constitute the assist control amount as compared to that when torque sensor operation is normal and executes drive control over the electric motor based on the assist control amount. | 10-22-2015 |
| 20150293515 | PROGRAMMING ASSIST DEVICE FOR PROGRAMMABLE LOGIC CONTROLLER PROGRAM AND PROGRAMMING ASSIST METHOD FOR THE PROGRAM - A programming assist device for a PLC program and a programming assist method for a PLC program capable of easily preparing separate executable files for causing redundant CPUs of a PLC to operate and reliably preventing an emergency stop of the PLC due to a failure in converter software are provided. First and second intermediate codes are generated from an original program. An inverse conversion program is generated from the first intermediate code. A reconverted first intermediate code and a reconverted second intermediate code are generated from the inverse conversion program. In the case where the intermediate codes and the reconverted intermediate codes match each other, a first executable file is generated from the reconverted first intermediate code, and a second executable file is generated from the reconverted second intermediate code. The executable files are transferred to the PLC. | 10-15-2015 |
| 20150291151 | DRIVE UNIT AND DRIVE MODULE - A drive unit includes a speed reducer that includes a plurality of gears having helical teeth and rotatably supported by bearings, and transfers rotation of a drive motor to rear drive wheels of a vehicle. The maximum value of torque to be generated by the drive motor during rearward travel of the vehicle is set to be lower than that during forward travel. Under such a precondition, the size of a bearing that receives a load during rearward travel, among the bearings which constitute the speed reducer, is smaller than the size of a bearing that receives a load during forward travel. | 10-15-2015 |
| 20150291058 | VEHICLE CONTROL DEVICE - A vehicle control device controls torque of a drive motor such that rotation of the drive motor is transferred to rear drive wheels of a vehicle via a drive unit that includes a speed reducer including a plurality of gears rotatably supported by bearings. The vehicle control device sets different values as torque restriction values for torque to be generated by the drive motor when the vehicle is driven forward and when the vehicle is driven rearward. | 10-15-2015 |
| 20150285609 | MACHINE TOOL INCLUDING AFFECTED LAYER DETECTION SENSOR - A machine tool including a non-contact affected layer detection sensor capable of detecting an affected layer with high precision is provided. A machine tool includes a non-contact affected layer detection sensor, a main body, probes and that contact the surface of an workpiece, arm portions supported by the main body, and dimension measurement sensors that output a signal that corresponds to the dimension of the workpiece on the basis of displacement of the arm portions with respect to the main body. The affected layer detection sensor is provided in the arm portion, and outputs a signal that corresponds to an affected state of the workpiece. The arm portions hold the probes respectively, and are displaceable with respect to the main body in accordance with the dimension of the workpiece. | 10-08-2015 |
| 20150277417 | METHOD OF INSPECTING RAM OF PROGRAMMABLE LOGIC CONTROLLER, AND PROGRAMMABLE LOGIC CONTROLLER - A method of inspecting a RAM of a programmable logic controller is provided that enables all unit storage regions in a RAM inspection region to be inspected in about several minutes and that meets a predetermined safety standard. The inspection method includes the steps of: (a) dividing a RAM inspection region, which is a region of the RAM to be inspected, into a plurality of blocks; and (b) by a control device, writing a predetermined value into unit storage regions in a combination of blocks obtained by combining two blocks extracted from the divided blocks and thereafter sequentially inspecting whether or not values read from the unit storage regions each coincide with the written value. Step (b) is executed for all combinations of two blocks extracted from the divided blocks. | 10-01-2015 |
| 20150277415 | PROGRAMMABLE LOGIC CONTROLLER AND PROGRAMMING TOOL FOR PROGRAMMABLE LOGIC CONTROLLER - A programmable logic controller capable of improving the expandability of a distributed control system and a programming tool for the programmable logic controller are provided. A programmable logic controller (PLC) that constitutes a distributed control system includes: a variable table that includes variable information including identification symbols for identification of a plurality of PLCs and variable names of reference variables, the variable information being set for each of the reference variables; a storage device that has a memory region for storing the reference variables; and an interface circuit that mutually converts communication data for use in communication between the PLC and a different PLC and the reference variables stored in the memory region. The reference variables are variables mutually referenced by the plurality of PLCs. | 10-01-2015 |
| 20150267754 | BEARING DEVICE - An inner ring has a plurality of grooves which are formed on its inner peripheral face and extended from an end thereof in an axial direction. The grooves are extended from both ends in the axial direction of the inner ring inwardly in the axial direction, and closed in a middle part in the axial direction of the inner peripheral face of the inner ring. The grooves are formed in plurality at an equal interval in a circumferential direction. | 09-24-2015 |
| 20150261214 | NUMERICAL CONTROL UNIT AND NC PROGRAM CREATING UNIT - A numerical control unit is provided that can change an override value according to various workpiece materials and can extend the tool life. A numerical control unit includes a variation storage unit that stores a variation in override value of a feed speed or a spindle speed for each workpiece material, an override value setting unit that sets the override value based on the variation in override value according to the material of a workpiece being machined; and a control unit that changes the feed speed or the spindle speed based on the override value. | 09-17-2015 |
| 20150261213 | NC PROGRAM CREATING DEVICE - An NC program creating device is provided that can automatically insert in an NC program a code that can be executed simultaneously with feeding in a non-cutting state. If it is determined by a determination unit that there is a standard code M03, M06, M10 before or after a non-cutting feed code G00 or G30 in an NC program, a new code placement unit places, instead of the standard code M03, M06, M10, a simultaneous execution code M103, M805, M110 corresponding to the standard code M03, M06, M10 before the non-cutting feed code G00 or G30, and places after the non-cutting feed code G00 or G30 a code that performs at least a prescribed operation of the standard code M03, M06, M10 other than an operation of the simultaneous execution code M103, M805, M110. | 09-17-2015 |
| 20150258889 | DRIVING FORCE DISTRIBUTION CONTROL APPARATUS - A driving force distribution control apparatus includes: a driving force transmission device including a clutch which can change distribution of a driving force to front wheels and rear wheels of a four-wheel drive vehicle; and a controller which controls an engagement force of the clutch in accordance with a traveling state. The controller includes a different-diameter tire detector which detects an attachment of a different-diameter tire to one of the front wheels and the rear wheels when a rotation speed ratio between the front wheels and the rear wheels continues to be equal to or larger than a reference rotation speed ratio for a predetermined time. The different-diameter tire detector performs detection of the attachment of the different-diameter tire when it is determined that the wheels are unlikely to slip based on an outside condition. | 09-17-2015 |
| 20150258659 | GRINDING WHEEL TRUING METHOD AND GRINDING MACHINE - A truing device is supported so as to be elastically movable in the Z-axis direction, which is parallel to a grinding wheel rotational axis, and elastically movable in the X-axis direction in which a grinding wheel cuts into the truing device, and includes a movement restriction device that controls prohibition and permission of elastic movement. The method includes: causing a surface of the grinding wheel to contact the truing device in the X-axis direction; and correcting a shape of the grinding wheel when the grinding wheel cuts into the truing device until the amount of elastic movement of the truing device in the X-axis direction reaches a first predetermined amount, by controlling the movement restriction device to prohibit elastic movement of the truing device, and thereafter causing the grinding wheel to further cut into the truing device in the X-axis direction by a second predetermined amount. | 09-17-2015 |
| 20150248124 | OPERATION LIMITING DEVICE FOR MACHINE TOOL - An operation limiting device applicable to a wide variety of machine tools and which improves the freedom of setting an operation limiting area. Two or three drive axes (Xa, Za) in different directions are designated from among a plurality of drive axes in the machine tool and the designated drive axes (Xa, Za) form the two or three dimensional coordinate system. An area (Ar) for limiting the operation of the mobile body is set in the two or three dimensional coordinate system. A drive axis (Xa) which is in operation is determined, and in the two or three coordinate system including the drive axis which is in operation the operation of the mobile body is limited when the mobile body enters into the limiting area (Ar). | 09-03-2015 |
| 20150243963 | APPARATUS AND PROCESS FOR PRODUCING ELECTRICITY STORAGE MATERIAL - A production apparatus for producing an electricity storage material is provided. The electricity storage material includes at least a thickener and an active material. The production apparatus includes a solution production device and a mixture-kneading device. The solution production device produces a surfactant-containing solution of the thickener. The mixture-kneading device kneads the solution together with a powder of the active material. | 08-27-2015 |
| 20150239151 | KNEADING DEVICE - A kneading device includes: a preliminary kneading device that produces a preslurry by agitating a powder and a liquid introduced and transferring them while wetting the powder with the liquid; and a main kneading device that causes the powder to be uniformly dispersed in the preslurry supplied from the preliminary kneading device to produce a slurry. The main kneading device includes a gap defined by two conical surfaces that face each other with a predetermined distance therebetween and rotate relative to each other about their central axes. The slurry is produced by passing the preslurry through the gap. With the preliminary kneading device, the powder is dispersed in the liquid after conforming to the liquid, which suppress damage to the powder. The conditions of main kneading can be changed only by adjusting the gap, which facilitates the operation of changing the conditions of the main kneading. | 08-27-2015 |
| 20150200396 | APPARATUS AND METHOD FOR MANUFACTURING AN ELECTRICITY STORAGE MATERIAL - An apparatus and method for manufacturing an electricity storage material are provided which allow easily measuring the dissolution rate to solubility of a solution of a powder thickener dissolved in a liquid solvent. An apparatus for manufacturing an electricity storage material includes: a dissolving device that dissolves in a liquid solvent a thickener as powder that is ionized when dissolved; and a dissolution-rate-to-solubility determining device that measures conductivity of the solution produced by the dissolving device and determines a dissolution rate to solubility of the solution based on the measured conductivity. The dissolution rate to solubility can thus be determined without the need to stop the dissolving device during dissolution of the thickener in the liquid solvent. This can significantly improve production efficiency. Since excessive operation of the dissolving device can be prevented, energy saving can be achieved. | 07-16-2015 |
| 20150199808 | DEGREE-OF-DISPERSION INSPECTING APPARATUS FOR PARTICLES OF ELECTRICITY STORAGE MATERIAL IN ELECTRICITY STORAGE DEVICE - A degree-of-dispersion inspecting apparatus accurately quantifies the degree of dispersion of particles of an electricity storage material based on in-plane uniformityand void size uniformity, which are obtained from an image of a coating film of the electricity storage material. The in-plane uniformity is a macroscopic value based on the ratio of voids between the particles in the electricity storage material, and the void size uniformity is a microscopic value based on values equivalent to the sizes of the voids between the particles in the electricity storage material. This allows the degree of dispersion of the particles of the electricity storage material to be accurately quantified even if the particles of the electricity storage material are in contact with each other or vary in size. | 07-16-2015 |
| 20150194265 | METHOD FOR MANUFACTURING ELECTRICITY STORAGE DEVICE - An electricity storage member in an electricity storage device is manufactured by a step of folding a positive electrode material foil and folding a negative electrode material foil, a step of arranging the positive and negative electrode material foils with a separator foil interposed therebetween, and a step of positioning the positive and negative electrode material foils by relatively moving the positive and negative electrode material foils toward each other so as to insert one end of a second material foil among the positive and negative electrode material foils into a bottom of a valley of the first material foil, and restraining the one end of the second material foil with the bottom of the valley of the first material foil. | 07-09-2015 |
| 20150192198 | VEHICLE DRIVING FORCE DISTRIBUTION DEVICE - A vehicle driving force distribution device includes: a differential gear; a driving force transmission device; and a case member having a first accommodating chamber accommodating the differential gear and a second accommodating chamber accommodating the driving force transmission device. The case member has a first flow passage that allows lubricating oil to flow from the first accommodating chamber into the second accommodating chamber, and a second flow passage that allows lubricating oil to flow from the second accommodating chamber into the first accommodating chamber. In a two-wheel drive mode, lubricating oil flows from the second accommodating chamber into the first accommodating chamber through the second flow passage. In a four-wheel drive mode, lubricating oil flows from the first accommodating chamber into the second accommodating chamber through the first flow passage. | 07-09-2015 |
| 20150191087 | VEHICLE CONTROL DEVICE - A vehicle control device includes a drive motor and an engaging/disengaging mechanism having a function to permit and cut off torque transmission between the drive motor and wheels. The vehicle control device further includes a smoothing capacitor that smoothes electric power applied from a secondary battery, a drive circuit for the drive motor, a drive circuit for the engaging/disengaging mechanism, and a microprocessor for controlling each drive circuit. If it is determined that a collision of a vehicle has occurred, the microprocessor disconnects each drive circuit from the secondary battery, and outputs a command to disengage the engaging/disengaging mechanism. | 07-09-2015 |
| 20150175000 | VEHICLE DIFFERENTIAL APPARATUS - A vehicle differential apparatus is provided with: a differential case rotatable around a rotation axis in which a first shaft insertion hole is formed along a direction perpendicular to the rotation axis, a pair of side gears, a pinion gear meshing with the paired side gears in which a second shaft insertion hole is formed in an axial center portion of the pinion gear, and a pinion shaft including an insertion end portion inserted in the first shaft insertion hole of the differential case and a pinion gear support portion inserted in the second shaft insertion hole of the pinion gear to rotatably support the pinion gear. The pinion gear is supported so as to be movable in the rotation axis direction by a meshing reaction force generated from a meshing engagement with the pair of side gears. | 06-25-2015 |
| 20150142156 | FLEXIBLE MANUFACTURING SYSTEM - There is provided a flexible manufacturing system that can reliably place a workpiece that isn't defective piece in a state where the workpiece will be machined again. After a pallet is conveyed to a standby position and before machining of the workpiece attached to the pallet is started, controllers determines whether machining of the workpiece with a corresponding machining device is possible. When it is determined that machining is possible, the controller starts machining with the machining device. When it is determined that machining is impossible, the controller make a conveyor convey the pallet from the standby position to a pallet storage room, and stores the machining status information on the conveyed pallet as the machining-waiting state. | 05-21-2015 |
| 20150137499 | ENERGY ABSORBING STEERING APPARATUS - An energy absorbing steering apparatus in which shock applied to a steering column is absorbed by plastic deformation of a bracket for suspending the steering column from a vehicle body. The bracket includes: a first plate portion; a second plate portion bent from a rear edge of the first plate portion toward a lower portion; a third plate portion bent from a lower edge of the second plate portion toward a rear upper portion; and a fourth plate portion bent from an upper edge of the third plate portion toward the lower portion. An angle of a first bent portion between the first and second plate portions is an obtuse angle. An angle of a second bent portion between the second and third plate portions is an acute angle. An angle of a third bent portion between the third and fourth plate portions is an acute angle. | 05-21-2015 |
| 20150114790 | PUMP APPARATUS WITH SWITCHING VALVE AND DRIVING POWER TRANSMISSION DEVICE - A pump apparatus with a switching valve includes an actuator that is rotationally driven, a pump, a switching valve and a driving power interrupting device. The pump discharges a fluid sucked by rotational driving of the actuator. The switching valve is changed in phase by the rotational driving of the actuator so as to be switchable among a plurality of destinations of the fluid discharged from a pump chamber of the pump. The driving power interrupting device for a valve is switchable between a state where rotational driving power of the actuator is transmitted to the switching valve and a state where the rotational driving power of the actuator is interrupted. | 04-30-2015 |
| 20150110428 | CYLINDRICAL ROLLER BEARING - A cylindrical roller bearing including an inner ring including a raceway surface on an outer periphery thereof an outer ring including a raceway surface on an inner periphery thereof a plurality of cylindrical rollers rollably disposed between the raceway surface of the inner ring and the raceway surface of the outer ring; and a cage for circumferentially retaining the cylindrical rollers at predetermined intervals. The cage is circumferentially provided with a plurality of guide pieces on an outer periphery of the cage at predetermined intervals, a guide piece of the plurality of guide pieces projecting toward the raceway surface of the outer ring to form a sliding contact portion which makes sliding contact with the raceway surface for guiding the rotation of the cage and for removing an excess lubricant on the raceway surface. | 04-23-2015 |
| 20150104126 | CONICAL ROLLER BEARING - The conical roller bearing includes an inner ring which includes an annular groove between an inner-ring-side raceway surface and a small-diameter-side end portion thereof, and a cage which includes an erected portion extending from a first annular portion of the cage towards the annular groove. The erected portion includes a first inclined portion and a second inclined portion. The first inclined portion is inclined towards conical rollers disposed in pockets of the cage while extending from the first annular portion towards the annular groove. The second inclined portion is inclined towards the small-diameter-side end portion while extending from the first inclined portion towards the annular groove. The second inclined portion is configured to be brought into engagement with the annular groove in an axial direction of the inner ring. | 04-16-2015 |
| 20150085539 | ELECTRIC POWER CONVERTER - A processor unit in an electric power converter executes detection of an overheating predicted state that is a stage prior to overheating of the IGBTs, a short circuit predicted state that is a stage prior to a short circuit in the arms, and a voltage drop predicted state that is a stage prior to a drop in a control voltage to be supplied to a driver circuit. When none of these predicted states is detected, a determination that an abnormality is not caused in the power module based on a latch signal is made by the processor unit. When an overheating predicted state is detected, the processor unit lowers the duty ratio of a motor control signal. When a short circuit predicted state is detected, the processor unit prolongs the dead time in which the upper IGBTs and the lower IGBTs are both maintained in the off-state. | 03-26-2015 |
| 20150078948 | OIL PUMP - An oil pump includes a rotor, an outer peripheral member accommodating the rotor, a first plate, and a second plate. A discharge passage through which hydraulic fluid is discharged is connected to a discharge port of the first plate. A first pressure gradually-changing groove and a second pressure gradually-changing groove are formed such that a second flow passage area is larger than a first flow passage area, the first flow passage area being a flow passage area of the first pressure gradually-changing groove of the first plate, at a position at which the first pressure gradually-changing groove communicates with a transfer chamber passing through a sealed region, and the second flow passage area being a flow passage area of the second pressure gradually-changing groove of the second plate, at a position at which the second pressure gradually-changing groove communicates with the transfer chamber passing through the sealed region. | 03-19-2015 |
| 20150075899 | ELECTRIC POWER STEERING DEVICE - An electric power steering device includes a worm which is swingably connected to the rotation shaft of an electric motor through a joint. A first end portion and second end portion of the worm are supported by a first bearing and a second bearing, respectively. A pair of elastic members elastically urge the worm to an axial neutral position. An annular leaf spring which is held by a housing urges the second end portion toward a worm wheel through the second bearing. A synthetic resin member having a sliding contact surface which is in contact with the leaf spring is integrally disposed on the second bearing. | 03-19-2015 |
| 20150071796 | ELECTRIC PUMP APPARATUS - A closing cover integrally includes a cover main body, and a ventilation cap body. The ventilation cap body has a connecting portion that is integrally connected to the cover main body, and at least one ventilation passage hole that is disposed in the connecting portion to perpendicularly extend, and has a depth smaller than a plate thickness of the cover main body. A ventilation recessed portion is formed at a location that is positioned on an inner surface of the ventilation cap body of the closing cover. An inner wall surface defining the ventilation recessed portion is formed in such a shape that a deep side of the ventilation passage hole is opened to the inner wall surface defining the ventilation recessed portion to form a ventilation passage. A ventilation filter is installed on an inner opening portion of the ventilation recessed portion. | 03-12-2015 |
| 20150068862 | ELECTROMAGNETIC CLUTCH DEVICE - An electromagnetic clutch device includes: a meshing member; an electromagnetic coil; an armature; a cylindrical cam member; and a locking portion. The cam member is provided with a plurality of locked portions to be locked by the locking portion at different axial positions, such that the plurality of locked portions is formed adjacent to each other in a circumferential direction; the cam member rotates only by a first predetermined angle due to an axial movement of the armature from a first position to a second position, and the cam member further rotates only by a second predetermined angle due to a movement of the armature from the second position to the first position; and when locking of the locking portion is shifted from one of the plurality of locked portions to another locked portion circumferentially adjacent thereto so that the locking portion locks the another locked portion at a different axial position, the second meshing portion is meshed with the first meshing portion. | 03-12-2015 |
| 20150061436 | POWER GENERATING DEVICE - A power generating device includes an input rotor that is provided to an output shaft of speed up gears so as to be capable of rotating together with the output shaft, an output rotor that is provided to a drive shaft of a generator so as to be capable of rotating together with the drive shaft, and a one-way clutch that is disposed between the input rotor and the output rotor. The one-way clutch connects the input rotor with the output rotor so as to rotate together with the input rotor and the output rotor when the rotation speed of the input rotor exceeds the rotation speed of the output rotor, and the one-way clutch is configured to release the connection between the input rotor and the output rotor when the rotation speed of the input rotor falls below the rotation speed of the output rotor. | 03-05-2015 |
| 20150061240 | STAIR CLIMBING VEHICLE - A stair climbing vehicle that is able to stably climb stairs is provided. In order to keep the balance of the stair climbing vehicle at the time of climbing the stairs, the ratio between a gravity center moving control gain for the stair climbing vehicle and a turning control gain for first wheels and second wheels is changed by controlling the rotation of a first motor of each first turning actuator. Thus, it is possible to slightly turn the first wheels and the second wheels based on the posture of an occupant seated on the stair climbing vehicle when the occupant climbs the stairs with the stair climbing vehicle, thereby preventing the posture of the occupant from being unstable. Thus, the stair climbing vehicle is able to stably climb the stairs. | 03-05-2015 |
| 20150056386 | DEVICE FOR DEPOSITING CARBON FILM AND METHOD FOR DEPOSITING CARBON FILM - A carbon film deposition apparatus includes a nozzle which has a plurality of outlets for discharging source gas into a process chamber, and which includes a gas introduction pipe defining therein a gas flow path communicating with each of the plurality of outlets. A portion of a pipe wall of the gas introduction pipe corresponding to formation regions of the plurality of outlets is formed to have a stepped shape such that diameters of the gas flow path of the pipe wall become smaller as a distance from a side of supply of source gas by source gas supply means increases. | 02-26-2015 |
| 20150053529 | FLEXIBLE MANUFACTURING SYSTEM - A flexible manufacturing system that makes it possible to give a higher priority to machining of a workpiece that is a super-urgent item is provided. When a pallet to which a workpiece, which is a super-urgent item, is attached is loaded on a loading station, a second controller gives a command to a conveyor to convey a pallet to which a workpiece, which is a normal item, is attached and which is located at a standby position of a pallet changer to a pallet storage room. Then, the second controller controls the conveyor to convey the pallet to which the workpiece, which is the super-urgent item, is attached and which is loaded on the loading station to the standby position. | 02-26-2015 |
| 20150043985 | GEAR MACHINING APPARATUS - A gear machining apparatus causes a machining tool and a workpiece to rotate at a high speed in synchronization with each other to machine a highly accurate gear through cutting. The machining tool is manufactured such that each of pitches between tool blades of the machining tool is an integer multiple of a pitch between teeth of the gear, the integer multiple being equal to or larger than double. By using the machining tool for cutting performed by the gear machining apparatus, the number of the tool blades of the machining tool, which are brought into contact with the workpiece at the same time, is reduced. Thus, it is possible to suppress occurrence of self-excited vibrations during cutting by reducing the cutting resistance. Thus, it is possible to enhance the tooth trace accuracy of the gear. | 02-12-2015 |
| 20150035539 | POWER CIRCUIT ABNORMALITY DETECTION METHOD - A power circuit abnormality detection method for a power circuit detects whether an abnormality in a power source relay exists. The power circuit includes a pre-charge circuit opening and closing a connection between a direct current power source and a smoothing condenser by bypassing the power source relay to pre-charge the smoothing condenser, and a discharge circuit connected in parallel to the smoothing condenser to discharge electric charges stored in the smoothing condenser via a discharge resistance when a discharge switch is closed. The power circuit abnormality detection method includes a step of detecting whether the open contact abnormality in the power source relay exists based on whether a charge voltage of the smoothing condenser is reduced when a predetermined period of time has elapsed since both the discharge circuit and the power source relay are closed after the pre-charge circuit is opened. | 02-05-2015 |
| 20150032335 | DRIVING FORCE TRANSMISSION CONTROLLER AND VEHICLE CONTROL METHOD - A driving force transmission controller includes: a normal turning control unit that computes command values such that driving force transmitted to an outer wheel in a turning direction is larger than that transmitted to an inner wheel during normal turning; a counter-steering control unit that computes the command values such that the driving force transmitted to the outer wheel is larger than that transmitted to the inner wheel during counter-steering; a counter-steering return control unit that corrects the command values such that a rate of change in each of the driving forces transmitted to the right and left rear wheels is lower than a rate of change in a steered angle of front wheels when a steering velocity is equal to or higher than a prescribed value during the counter-steering; and a driving force transmission control unit that controls a driving force transmission device based on the command values. | 01-29-2015 |
| 20150030488 | GEAR PUMP - In a gear pump, an outer rotor and an inner rotor are disposed in a rotor installation chamber defined by a pump body and a pump cover. A suction port groove and a discharge port groove are formed in at least one of the pump body and the pump cover. A narrowing portion is formed at a portion of a radially outer side wall portion of the suction port groove, the portion being close to a terminal end wall portion of the suction port groove. The narrowing portion narrows the groove width in the radial direction. A pressurizing region that pressurizes oil in the gear chamber is formed between the narrowing portion and the terminal end wall portion. | 01-29-2015 |
| 20150025763 | DRIVING FORCE TRANSMISSION CONTROL SYSTEM - A driving force transmission control system includes: an electric motor; a multi-disc clutch; a cam mechanism that converts rotation output from the electric motor into cam thrust force that is axial force in the axial direction of the multi-disc clutch; a pressure-conversion mechanism that converts reaction force against the cam thrust force into pressure of a fluid; a pressure sensor that detects the pressure; and a control unit that computes a command value of a current supplied to the electric motor. The control unit stores the pressure of the fluid during disengagement of the multi-disc clutch, and computes the current command value based on the pressure of the fluid to which the reaction force against the cam thrust force has been applied, and the stored pressure of the fluid. | 01-22-2015 |
| 20150024855 | TRIPOD CONSTANT VELOCITY JOINT AND METHOD OF PRODUCING THE SAME - A roller includes: an outer peripheral rolling contact surface which is shaped by a simultaneous process in a state where end faces of a plurality of rollers are in contact with each other; and a protrusion which is axially protruded further than an axial end of the outer peripheral rolling contact surface. The protrusion has a protruded end face which, when the outer peripheral rolling contact surface is ground, is in contact with the end face of one of the rollers which are adjacent to each other, and forms an axial gap between ends of the outer peripheral rolling contact surfaces of the rollers which are adjacent to each other, in a state where the protruded end face is in contact with the end face. The protrusion further has a gap with respect to a tool when the outer peripheral rolling contact surface is processed. | 01-22-2015 |
| 20150021828 | RUBBER VULCANIZER AND RUBBER VULCANIZING METHOD - A rubber vulcanizer includes: a pair of heat plates disposed to be opposed to each other in a prescribed direction and to be apart from each other in the prescribed direction; and one or more dies for rubber molding stacked on each other in the prescribed direction between the heat plates. The rubber vulcanizer is able to realize either a state in which the dies of which the number is N are stacked on each other in the prescribed direction between the heat plates, or a state in which the dies of which the number is (N+1) are stacked on each other in the prescribed direction between the heat plates, where N is a natural number that satisfies at least a condition that 1≦N≦M, and M is a certain positive integer. | 01-22-2015 |
| 20150021425 | FILAMENT WINDING METHOD AND FILAMENT WINDING APPARATUS - Provided are a filament winding method and a filament winding apparatus, in which, when a new bobbin is mounted on a bobbin rotation driving device, the control device is programmed to rotate the bobbin and oscillate a dancer while maintaining a state where a distal end of filament unwound through the dancer is fixed further beyond the dancer and the filament is stretched. The control device is programmed to obtain a bobbin diameter of the bobbin mounted on the bobbin rotation driving device based on a length of the dancer, an oscillation angle of the dancer, and a rotation angle of the bobbin. | 01-22-2015 |
| 20150015169 | ONBOARD MOTOR CONTROLLER - There is provided an onboard motor controller that starts a failsafe process in short time at a vehicle collision. A control circuit in the motor controller acquires an acceleration detected by an acceleration sensor. When the acceleration is equal to or higher than a prescribed value, the control circuit determines that a collision of the vehicle has occurred, and executes a switching process of a control mode of a motor. The control circuit immediately switches the control mode of a motor from voltage phase control to current vector control when the collision is detected. The control circuit reads current values from current detectors. When an overcurrent is detected, the control circuit executes a failsafe process to turn off the MOSFETs of an inverter. The control circuit stops a supply of electricity to the inverter by turning off a power supply relay, thereby stopping the rotation of the motor. | 01-15-2015 |
| 20150012126 | THERMAL DISPLACEMENT CORRECTION METHOD AND THERMAL DISPLACEMENT CORRECTION UNIT - A thermal displacement correction method for a machine tool includes: estimating a thermal displacement of a support and a thermal displacement of the movable body independently of each other; acquiring a displacement of an attachment position of a scale that detects a position of the movable body; a movable body actual position acquiring step of acquiring an actual position of the movable body relative to the support after thermal deformation of the movable body; computing a degree of inclination of the movable body at the actual position; acquiring a resultant displacement that is a resultant of the thermal displacement of the support and the thermal displacement of the movable body; computing a correction value based on the resultant displacement; correcting a command position of the movable body based on the correction value. | 01-08-2015 |
| 20150010408 | MOTOR CONTROL APPARATUS AND ELECTRIC PUMP UNIT - A control unit includes an excessive output suppression control unit which suppresses an excessive output by reducing a current command value from a host control apparatus. A control signal output unit obtains a motor control signal by adding a reduction amount of the current command value to the current command value. The excessive output suppression control unit includes: an oil pressure estimating unit which estimates oil pressure based on a current and a rotating speed of the electric motor; and a current command value correction amount calculating unit which compares outputs the reduction amount of the current command value if the estimated oil pressure is higher than target oil pressure. One of the target oil pressure and the estimated oil pressure compared by the current command value correction amount calculating unit is corrected based on oil temperature information. | 01-08-2015 |
| 20140364242 | UNIVERSAL JOINT AND YOKE - A universal joint includes a pair of yokes and a joint cross. The pair of yokes have mutually identical shapes. Each of the yokes has a proximal portion and a pair of arm portions at which the joint cross is mounted. The proximal portion has an insertion hole for mounting a shaft, a slit formed along the insertion hole and a bolt insertion hole for fastening the slit. A positional relationship between the proximal portion and the pair of arm portions is set such that a line segment that connects the pair of arm portions to each other and an insertion direction in which a bolt is inserted in the bolt insertion hole intersect with each other at 45°. The bolt insertion holes of the pair of yokes coupled by the joint cross face the same side. | 12-11-2014 |
| 20140360745 | MAIN SPINDLE UNIT - A main spindle unit includes: a damper bearing that restricts vibrations of a main spindle by being supplied with a fluid; a fluid supply device that supplies the fluid to the damper bearing, and that is able to adjust a flow rate of the fluid; a vibration detection sensor that detects a vibration of the main spindle; and a controller that adjusts the flow rate of the fluid supplied from the fluid supply device, based on the magnitude of the vibration detected by the vibration detection sensor. | 12-11-2014 |
| 20140358375 | ACTUATOR CONTROL APPARATUS - There is provided an actuator control apparatus configured such that even when an electronic device that generates an electric signal to be used to control an actuator is provided in the form of a duplexed system, an increase in the number of communication paths between the electronic device and a controller is suppressed. A torque sensor and a rotation angle sensor are each provided in the form of a duplexed system. Two sets of a torque sensor and a rotation angle sensor are connected to a microcomputer via a SPI communication line. The torque sensors and the rotation angle sensors are connected to the microcomputer via CS communication lines, respectively. By selecting a communication target via a corresponding one of the CS communication lines, the microcomputer is able to receive multiple kinds of electric signals via each one of the SPI communication lines. | 12-04-2014 |
| 20140357171 | GRINDING WHEEL MANUFACTURING METHOD AND GRINDING WHEEL - A method of manufacturing a grinding wheel, and a grinding wheel. After a first overcoat layer is formed on each of CBN abrasive grains, a second overcoat layer that is plastically deformed under a pressure lower than a pressure under which the first overcoat layer is deformed, is formed on the outer side of the first overcoat layer to manufacture coated abrasive grains. The coated abrasive grains are subjected to pressure-molding to be formed into a prescribed shape under a pressure that is equal to or higher than a pressure under which the second overcoat layer is plastically deformed. The second overcoat layers are deformed and flow to form a molded material having a structure in which the first overcoat layers contact each other, and the flowing second overcoat layers are moved into clearances between the coated abrasive grains. By sintering this, CBN abrasive grains are dispersed at a prescribed distance that is determined by the degree of outer radius of each first overcoat layer, and vacancies are arranged therebetween at a prescribed density. | 12-04-2014 |
| 20140353070 | STEERING SYSTEM - A ball nut of a steering system has an external thread portion at a first end portion, and a flange at a second end portion. A ball bearing, a flange member and a driven pulley are sandwiched between a locknut and the flange in the axial direction of the ball nut. As one of side portions of a belt abuts against the flange member or the flange, the belt is restrained from coming off the driven pulley. | 12-04-2014 |
| 20140353068 | STEERING SYSTEM - In an electric power steering system, rotation of a motor is transmitted to a rack shaft via a drive pulley, a belt, a driven pulley and a ball nut. A ball bearing and the driven pulley are fitted to the outer periphery of the ball nut. A flange is formed at a first end portion of the ball nut, and an internal thread portion is formed at a second end portion of the ball nut. An external thread member is connected to the internal thread portion. The external thread member has an external thread portion and a flange. By fastening the external thread portion to the internal thread portion, the ball bearing and the driven pulley are held between the two flanges. | 12-04-2014 |
| 20140352274 | ASSEMBLY METHOD AND ASSEMBLY EQUIPMENT FOR POWER TRANSMISSION CHAIN - Portions of a pair of first pin members, a pair of second pin members, and a pair of third pin members other than one end portions thereof are respectively inserted into and held in a pair of first holding holes, a pair of second holding holes and a pair of third holding holes that extend perpendicularly to reference surfaces that are top faces of first to third connected body assembly jigs. In this state, a single first link plate, a single second link plate and a third link plate are press-fitted onto the one end portions until the first to third link plates come into contact with the reference surfaces. In this way, first to third multiple connected bodies are assembled. Then, the first to third multiple connected bodies and multiple fourth link plates are assembled into a power transmission chain. | 12-04-2014 |
| 20140345966 | ELECTRIC POWER STEERING SYSTEM - An electric power steering system includes: a steered shaft, a housing containing the steered shaft therein in a movable manner; a ball screw nut engaged threadedly to the steered shaft via a plurality of balls and configured to move the steered shaft in an axial direction; a double row angular contact ball bearing configured to retain the ball screw nut and to support the retained ball screw nut rotatably relative to the housing; a wall portion placed at either side of the double row angular contact ball bearing in the axial direction of the steered shaft, the wall portion being formed integrally with the housing; and an elastic member provided between the wall portion and the outer ring portion and configured to retain the double row angular contact ball bearing to be elastically displaceable in the axial direction. | 11-27-2014 |
| 20140345965 | POWER STEERING SYSTEM - A power steering system includes an EPS and a HPS. At normal times, an assist force required by a steering system is computed based on a steering torque and a vehicle speed, and the required assist force is generated by the EPS and the HPS. The torsional stiffness of a torsion bar of the HPS is equal to or substantially equal to the torsional stiffness of a torsion bar of the EPS. Therefore, even if the EPS malfunctions, it is possible to gain the steering feel similar to that when the EPS is operating properly. | 11-27-2014 |
| 20140343794 | ELECTRIC POWER STEERING SYSTEM - There is provided an electric power steering system that makes it possible to improve the driver's steering feel, and that includes a controller that controls driving of a motor. The controller computes a first assist component based on a steering torque. The controller computes a torque command value based on a basic drive torque that is the sum of the steering torque and the first assist component, and computes an assist compensation component through feedback control based on the torque command value. The controller computes a steered angle command value based on a value obtained by adding the assist compensation component to the basic drive torque, and computes a second assist component through feedback control based on the steered angle command value. The controller controls driving of the motor based on an assist command value that is the sum of the first assist component and the second assist component. | 11-20-2014 |
| 20140343789 | ELECTRIC POWER STEERING SYSTEM - There is provided an electric power steering system that is able to generate a more appropriate current command value. Limits of an assist controlled variable, formed of multiple upper limits and multiple lower limits are individually set for multiple signals used to compute the assist controlled variable. The values obtained by adding the limits together are set as final limits of the assist controlled variable, that is, an upper limit and a lower limit. Thus, even if the assist controlled variable exhibiting an abnormal value is computed for some reason, the abnormal value of the assist controlled variable is limited to an appropriate value corresponding to each signal value by the final limits. By supplying the appropriate assist controlled variable to a motor control signal generating unit as a final current command value, an appropriate assist force is applied to a steering system. | 11-20-2014 |
| 20140341492 | BALL BEARING - A cage holds a plurality of balls such that the balls are arranged at intervals in the circumferential direction. The cage is allowed to be in contact with an outer ring, and a portion of the outer ring, with which the cage is brought into contact, is only an inner periphery raceway groove. The cage is located so as to be apart from an inner ring. | 11-20-2014 |
| 20140339429 | OPTICAL NON-DESTRUCTIVE INSPECTION METHOD AND OPTICAL NON-DESTRUCTIVE INSPECTION APPARATUS - In an optical non-destructive inspection method which can perform inspection accurately in a short time. In the method, a heating laser beam source, at least one infrared detector, a control unit, and a storage unit are used. The storage unit stores a parameter state-time constant characteristic in which a parameter corresponding to a state of the measurement object is correlated with a time constant indicating the curve shape of the temperature rise characteristic that varies depending on the state of the parameter. The control unit determines the time constant based on the curve shape of the temperature rise characteristic, which extends from a heating start time point to a time point at which a saturated temperature is reached, and determines the state of the parameter of the measurement object based on the determined time constant and the parameter state-time constant characteristic. | 11-20-2014 |
| 20140338486 | RACK GUIDE UNIT AND STEERING SYSTEM INCLUDING THE RACK GUIDE UNIT - A rack guide unit includes a closure member secured to an external opening end of an accommodation portion of a housing, and a rack guide. Coned disc springs that urge the rack guide toward a rack shaft are interposed between the closure member and the rack guide. A protrusion of the closure member is passed through the coned disc springs and inserted in a recessed portion of the rack guide. An O-ring held in an accommodation groove formed in the outer periphery of the protrusion, at a position closer to the distal end of the protrusion than the coned disc springs are, functions as a retaining protrusion that restrains the coned disc springs from coming off the protrusion. For example, the coned disc springs and the closure member constitute a subassembly formed in advance. | 11-20-2014 |
| 20140338485 | RACK GUIDE UNIT AND STEERING SYSTEM INCLUDING THE RACK GUIDE UNIT - A rack guide unit includes a closure member secured to an external opening end of an accommodation portion of a housing, and a rack guide. A compression coil spring and a coned disc spring that urge the rack guide toward a rack shaft are interposed between the closure member and the rack guide. A holding member that holds the coned disc spring includes a guide tube that guides a radially inner portion of the coned disc spring and a seat plate that receives a load from the coned disc spring. An elastic member held in an accommodation groove formed in the outer periphery of the guide tube is frictionally engaged with the inner periphery (opposed portion) of a tubular portion of the rack guide. | 11-20-2014 |
| 20140336784 | PLC COMMUNICATION SYSTEM - The PLC communication system associated with the invention is characterized in that the system comprises a programmable logic controller (PLC), a plurality of processing devices, at least three communication processing nodes provided at the PLC and at the plurality of processing devices respectively to establish communication of the PLC and each of the processing devices and an interconnecting device and a plurality of communication lines for connecting the communication processing nodes with one another to establish data communication among the communication processing nodes. The PLC detects a state of communication failure and a display device displays an abnormal portion in a communication route based on the number of occurrences of the state of communication failure in respective interconnecting device and plurality of communication lines. | 11-13-2014 |
| 20140335769 | GRINDING MACHINE - A grinding machine includes: a grinding wheel of which movement in an X direction and a Z direction is controlled and that grinds a workpiece; and a truing unit that is installed at a predetermined position and that trues a machining surface of the grinding wheel. The truing unit includes: a movable table that is installed to be movable in the X direction relative to a support member; a truer that is rotatably installed in the movable table and that trues the machining surface of the grinding wheel; and an X-direction pressing mechanism that presses the truer in the X direction along with the movable table. | 11-13-2014 |
| 20140331810 | STEERING SYSTEM - A stationary tooth row is provided in a restricted member that is not displaced together with a steering wheel during tilt adjustment of a steering system. A movable tooth row is provided in a movable member that is displaced in a tilt direction) together with the steering wheel during tilt adjustment. The movable tooth row includes a first movable tooth and second movable teeth. A first curvature radius of a tooth tip of the first movable tooth is made smaller than a second curvature radius of a tooth tip of each of the second movable teeth to make a tooth depth of the first movable tooth greater than a tooth depth of each of the second movable teeth. | 11-13-2014 |
| 20140331788 | TORQUE DETECTOR AND ELECTRIC POWER STEERING SYSTEM INCLUDING THE TORQUE DETECTOR - A torque detector includes a permanent magnet, a pair of magnetic yokes, and a magnetic sensor. The magnetic yokes include a first magnetic yoke and a second magnetic yoke. The first magnetic yoke has a first ring and a plurality of first teeth extending from the first ring in an axial direction. The second magnetic yoke has a second ring and a plurality of second teeth extending from the second ring in the axial direction. The first teeth extend in the axial direction beyond the second ring of the second magnetic yoke. The second teeth extend in the axial direction beyond the first ring of the first magnetic yoke. | 11-13-2014 |
| 20140321498 | OPTICAL NON-DESTRUCTIVE INSPECTION APPARATUS AND OPTICAL NON-DESTRUCTIVE INSPECTION METHOD - There are provided an optical non-destructive inspection apparatus and an optical non-destructive inspection method. The apparatus includes a focusing-collimating unit, a heating laser beam source, a heating laser beam guide unit, an infrared detector, an emitted-infrared guide unit, first and second correcting laser beam source, first and second correcting laser beam guide units, first and second correcting laser detectors, first and second reflected laser beam guide units, and a control unit. The control unit controls the heating laser beam source and the first and second correcting laser beam sources, measures a temperature rise characteristic that is a temperature rise state of a measurement spot based on a heating time, on the basis of a detection signal from the infrared detector and detection signals from the first and second correcting laser detectors, and determines a state of a measurement object based on the measured temperature rise characteristic. | 10-30-2014 |
| 20140321497 | OPTICAL NON-DESTRUCTIVE INSPECTION APPARATUS AND OPTICAL NON-DESTRUCTIVE INSPECTION METHOD - There are provided an optical non-destructive inspection apparatus and an optical non-destructive inspection method. The apparatus includes a focusing-collimating unit, a heating laser beam source, a heating laser beam guide unit, an infrared detector, an emitted-infrared guide unit, first and second correcting laser beam source, first and second correcting laser beam guide units, first and second correcting laser detectors, first and second reflected laser beam guide units, and a control unit. The control unit controls the heating laser beam source and the first and second correcting laser beam sources, measures a temperature rise characteristic that is a temperature rise state of a measurement spot based on a heating time, on the basis of a detection signal from the infrared detector and detection signals from the first and second correcting laser detectors, and determines a state of a measurement object based on the measured temperature rise characteristic. | 10-30-2014 |
| 20140318303 | STEERING SYSTEM - A steering system configured so that the possibility of occurrence of half-lock is significantly reduced is provided. A fastening mechanism has a pair of fastening members that fasten a pair of stationary side plates of a stationary bracket fixed to a vehicle body and a pair of movable side plates of a column bracket fixed to an upper jacket. A stationary tooth row is provided at only one location, that is, a first edge portion located on a steering member side of a tilt slot in a left stationary side plate. A second cam that serves as the fastening member has a first fastening portion that fastens the first edge portion adjacent to the tilt slot. A movable tooth row having teeth that are engaged with teeth of the stationary tooth row is provided in the first fastening portion. | 10-30-2014 |
| 20140318264 | VEHICLE TEST APPARATUS AND VEHICLE TEST SYSTEM - A vehicle test apparatus includes: a test article installation vehicle body to which four axles corresponding to four wheels that are a left front wheel, a right front wheel, a left rear wheel and a right rear wheel are attached, and on which a test article is installed; a first motion base that supports the test article installation vehicle body, and that allows the test article installation vehicle body to make motions of six degrees of freedom; and four second motion bases each of which supports a corresponding one of the axles, and each of which allows a corresponding one of the axles to make motions of six degrees of freedom. | 10-30-2014 |
| 20140318229 | VEHICLE TEST SYSTEM - In a vehicle test system, a displacement degree computing unit computes degrees of six-degree-of-freedom displacements of each of second motion bases, which correspond to external forces of respective six degrees of freedom detected by a corresponding one of six-axis force sensors, on an assumption that each of the second motion bases has a virtual mechanical impedance. A MB second target value generator generates final position and posture target values for each of the second motion bases based on the position and posture target values for each of the second motion bases and the degrees of six-degree-freedom displacements of each of the second motion bases. | 10-30-2014 |
| 20140314360 | ROLLING BEARING DEVICE - A rolling bearing device includes a rolling bearing, and a lubricant reservoir that is formed in an outer ring spacer. A lubricant containing base oil, a gelling agent and water is disposed so as to be contained in the lubricant reservoir. The lubricant has a uniform base oil concentration. The base oil concentration is 40% by weight to 50% by weight. | 10-23-2014 |
| 20140314121 | OPTICAL NON-DESTRUCTIVE INSPECTION APPARATUS AND OPTICAL NON-DESTRUCTIVE INSPECTION METHOD - There are provided an optical non-destructive inspection apparatus that can inspect a measurement object such as a wire bonding portion. The apparatus includes a focusing-collimating unit, a heating laser beam source, a heating laser beam guide unit, a first infrared detector, a second infrared detector, an emitted-infrared selective guide unit, and a control unit. The control unit controls the heating laser beam source, measures a temperature rise characteristic that is a temperature rise state of a measurement spot based on a heating time, on the basis of a ratio between a detected value from the first infrared detector and a detected value from the second infrared detector, determines a state of a measurement object based on the temperature rise characteristic, and changes at least one of wavelengths of infrared light beams guided to the first infrared detector and the second infrared detector based on a measured temperature during measurement. | 10-23-2014 |
| 20140312730 | ROTARY ELECTRIC MACHINE - A rotary electric machine includes: a stator; | 10-23-2014 |
| 20140311817 | ELECTRIC POWER STEERING SYSTEM - An EPS includes a first rack and pinion mechanism that converts rotation of a pinion shaft due to a steering operation, to reciprocating motion of a rack shaft; and a steering force assist device that applies a motor torque of a motor as an assist force by using a second rack and pinion mechanism; and an ECU that controls an operation of the steering force assist device. Rack teeth of the rack shaft constituting the first rack and pinion mechanism are formed so that a steering gear ratio is changed depending on a steering angle. The ECU computes a motor neutral point by subtracting a conversion value from a motor angle detection value. The conversion value is computed based on a steering angle detection value by referring to a conversion map that is set taking into account the steering gear ratio corresponding to the steering angle. | 10-23-2014 |
| 20140303846 | VEHICLE STEERING SYSTEM - In a vehicle steering system configured to reduce the burden placed on an operator when steered wheels are returned to a neutral position, a knob for operating a steering wheel is turnably attached to the steering wheel. A switch is attached to the knob. A steered system ECU includes a target steered angle setting unit. The target steered angle setting unit changes a target steered angle to a steered angle corresponding to a position closer to the neutral position of the steered wheels when the switch is turned on in a state where the turning amount of the steering wheel from a turning angle of the steering wheel corresponding to the neutral position of the steered wheels is within a prescribed range. | 10-09-2014 |
| 20140301690 | PRONG TYPE RESIN CAGE FOR DOUBLE ROW ROLLER BEARING AND DOUBLE ROW ROLLER BEARING - A prong type resin cage includes: an annular portion; and multiple cage bars. Each cage bar has a roller guide face formed in each opposed face thereof, the opposed face being opposed to an outer peripheral face of a corresponding one of rollers. The roller guide face is used for roller guide by the outer peripheral face at a rotational speed equal to or lower than a prescribed rotational speed. A cage outer face including an outer peripheral face of the annular portion and radially outer faces of the cage bars has outer ring guide faces of which diameter is increased radially outward by a centrifugal force to decrease a radial clearance between the outer ring guide faces and an inner peripheral face of the outer ring, so that outer ring guide by the inner peripheral face is carried out, at a rotational speed higher than the prescribed rotational speed. | 10-09-2014 |
| 20140301688 | PRONG TYPE CAGE FOR DOUBLE ROW ROLLER BEARING AND DOUBLE ROW ROLLER BEARING - A prong type cage is incorporated in a double row roller bearing and holds the rollers arranged in one of the two rows. The prong type cage has an annular portion; and multiple cage bars. Pockets in which the rollers are held are defined at positions on a side of the one side face of the annular portion and between the cage bars adjacent to each other in the circumferential direction. Recesses are formed in a face of the annular portion, the face being opposed to end faces of the rollers disposed in the pockets. The recesses are opened toward the end faces of the rollers to retain grease between the recesses and the end faces of the rollers. The recesses are opened at an inner peripheral face of the annular portion to introduce the grease that is present on the inner peripheral face of the annular portion into the recesses. | 10-09-2014 |
| 20140300305 | MOTOR CONTROL DEVICE - A motor control device includes a drive circuit that supplies drive electric power in three phases to a motor, according to turning on or off of FETs; a microcomputer that generates control signals for turning on or off the FETs. The microcomputer detects a current-carrying failure in a U phase when all of (i) a condition that an absolute value of a U phase current value is less than a current determination value, (ii) a condition that a duty value corresponding to the U phase voltage command value is equal to or greater than a first duty determination value, or equal to or less than a second duty determination value; and (iii) a condition that the U phase voltage command value is deviated from the V phase and W phase voltage command values are satisfied. | 10-09-2014 |
| 20140298225 | SCREEN DEFINITION DEVICE FOR OPERATING PANEL - A screen definition device includes a screen data generating unit that outputs screen data generated by combining model screen data in which section information is set, with screen definition tables for the model screen data; a screen data combining unit that combines the screen data with the other screen data based on a reference relation indicated by link information of the screen data and the link information of the other screen data; and a screen definition table setting unit that sets screen definition tables in a table form. | 10-02-2014 |
| 20140297144 | ELECTRICAL LOAD CONTROL DEVICE, ABNORMALITY DETERMINATION METHOD, AND ABNORMALITY DETERMINATION PROGRAM - A microcomputer of a driving force distribution control device detects a maximum current value among values of an upper current acquired during a predetermined period, and determines that an overcurrent abnormality has occurred in the driving force distribution control device when the maximum current value is equal to or larger than an abnormal current threshold value and a time, for which the maximum current value is equal to or larger than the abnormal current threshold value, is equal to or larger than an abnormality detection time. Then, the microcomputer performs off control to turn off a relay, and notifies a driver of occurrence of the overcurrent abnormality using a notification unit. | 10-02-2014 |
| 20140297122 | VEHICLE STEERING SYSTEM - A vehicle steering system includes an axial force sensor that detects a vibration of a vehicle wheel; and a control device including an FFT analysis unit that resolves the vibration of the vehicle wheel into a power spectrum. The control device executes compensation assist control that suppresses one of a deflection of the vehicle and a vibration of a steering component that are caused by a puncture or a burst of the vehicle wheel, based on the vibration calculated based on a radius of the vehicle wheel when the vehicle wheel is normal and a vehicle speed and an abnormal-wheel frequency calculated based on a radius of the vehicle wheel when the vehicle wheel is punctured or burst and the vehicle speed. | 10-02-2014 |
| 20140297098 | TEST SYSTEM - A test system includes an actual machine including a test piece that is a mechanical element of a vehicle, the actual machine being installed in a first location; a control device that is installed in the first location, and controls the actual machine; a model installed in a second location away from the first location; and a data processor that is installed in the second location, and is connected to the actual machine or the control device via a communication line so that data communication is performed, the data processor acquiring data from the actual machine via the communication line so that an operation test is performed. The data processor calculates a target value for controlling the actual machine based on an output acquired by inputting the acquired data to the model, and the control device controls the actual machine based on the target value. | 10-02-2014 |
| 20140294644 | PUMP - A pump includes: a housing in which a pump chamber that is a columnar space is formed, the pump chamber being provided with a suction-side groove and a discharge-side groove that are formed as recesses; an outer rotor rotatably disposed in the pump chamber and having internal teeth on an inner periphery of the outer rotor; and an inner rotor disposed radially inward of the internal teeth of the outer rotor, and having external teeth formed on an outer periphery of the inner rotor and meshed with the internal teeth of the outer rotor. A portion of an inner edge of the discharge-side groove is located radially inward of a locus of tooth tips of the internal teeth of the outer rotor, the portion being located in a second half region of the discharge-side groove in a rotational direction of the inner rotor and the outer rotor. | 10-02-2014 |
| 20140291062 | ELECTRIC POWER STEERING SYSTEM - A drainage device of an electric power steering system has a drain case and a drain valve. The drain case has a groove portion formed in a peripheral edge portion of a case inlet. The drain valve has a main body, and a flange disposed so as to face the case inlet. The flange has a bulged portion bulged toward the case inlet, and an annular seal portion. When the seal portion is brought into tight contact with the peripheral edge portion of the case inlet, the drainage device is placed in a valve closed state to form an annular space between the groove portion and the seal portion. When the seal portion is elastically deformed to form a gap between the seal portion and the peripheral edge portion of the case inlet, the drainage device is placed in a valve open state. | 10-02-2014 |
| 20140290413 | VEHICLE STEERING SYSTEM - There is provided a vehicle steering system that facilitates fine steering of a vehicle body regardless of the operated state of a steering wheel. The steering wheel is provided with a lever used to operate the steering wheel. A support mechanism supports and rotates the lever relative to the steering wheel such that the lever is tiltable in the rightward direction and the leftward direction relative to the vehicle body regardless of a turning angle of the steering wheel. The support mechanism includes a support member fixed to the steering wheel, a base disposed on the support member and rotatably supported by the support member, and a gear mechanism used to rotate the base as the steering wheel is turned. | 10-02-2014 |
| 20140290410 | BALL SCREW DEFLECTOR - In an electric power steering system, there is provided a ball screw deflector configured to make it possible to easily measure the whole length of each of deflector pieces. A mating face of each of the deflector pieces and end faces of the deflector pieces are parallel to each other, and have an angle corresponding to a lead angle of a ball screw portion. Thus, it is possible to reduce the amount of material required to form each of the deflector piece pieces. In addition, it is possible to easily measure the overall length of each of the deflector pieces with the use of measuring equipment such as a vernier caliper. | 10-02-2014 |
| 20140287854 | CONTINUOUSLY VARIABLE TRANSMISSION - A chain (endless flexible member) is looped over an input pulley and an output pulley. Each of the input pulley and the output pulley includes a pair of a fixed sheave and a movable sheave. The fixed sheave and the movable sheave have tapered faces that are opposed to each other to define a V-shaped groove. A vibration damping plate (vibration damping member) is fixed to each fixed sheave, and is in contact with the outer peripheral face of the fixed sheave. When the fixed sheave vibrates, the vibrations are damped by the friction between the outer peripheral face of the fixed shave and the vibration damping plate. | 09-25-2014 |
| 20140286809 | PUMP - A pump includes a second housing member in which a suction-side groove and a discharge-side groove are formed at a predetermined interval in a circumferential direction of a bottom of a pump chamber so as to be recessed in the bottom of the pump chamber. Fitting portions that are fitted to bosses are formed on an outer surface of the second housing member. A protruding portion, which overlaps with the bosses in a thickness direction, is formed so as to protrude from a surface of the housing on which the fitting portions are formed. A relief valve is provided in the protruding portion, and the relief valve discharges fluid from the discharge-side groove when pressure in the discharge-side groove is equal to or higher than predetermined pressure. | 09-25-2014 |
| 20140286602 | ROLLING BEARING UNIT - A rolling bearing unit includes: a rolling bearing; a grease reservoir in which grease is reserved; an outer ring spacer disposed adjacent to an outer ring of the rolling bearing; and a bellows-shaped grease medium that connects a second side wall that defines the grease reservoir on the outer ring spacer side, to a step portion of the outer ring. The grease medium is disposed so as to be impregnated with a base oil contained in the grease. | 09-25-2014 |
| 20140286598 | SLIDING MEMBER AND MANUFACTURING METHOD THEREOF - A sliding member is integrally formed of fluororesin as a whole, and a sliding surface to be slid with a slid member is made hydrophilic. A manufacturing method includes a step of exposing the sliding surface | 09-25-2014 |
| 20140285049 | MAGNET-EMBEDDED ROTOR, METHOD FOR MANUFACTURING MAGNET-EMBEDDED ROTOR, AND ORIENTATION AND MAGNETIZATION DEVICE - A magnet-embedded rotor includes a cylindrical rotor core that rotates together with a rotating shaft; and permanent magnets embedded in the rotor core. The rotor core includes core members, and each core member includes a tubular portion into which the rotating shaft is inserted and projecting portions formed to project in a radial direction of the tubular portion from an outer periphery of the tubular portion and arranged apart from each other in a circumferential direction of the tubular portion. The rotor core is formed by assembling the core members such that the tubular portions are arranged on one straight line and the projecting portion of the core member and the projecting portion of the other core member are adjacent to each other in a circumferential direction of the rotor core. The permanent magnet is embedded in each projecting portion of each core member. | 09-25-2014 |
| 20140284163 | DRIVING FORCE TRANSMISSION APPARATUS AND CONTROLLER FOR DRIVING FORCE TRANSMISSON APPARATUS - A driving force transmission apparatus includes: an electric motor; a multi-disc clutch including outer clutch plates and inner clutch plates that are disposed coaxially with each other so as to be rotatable relative to each other and that are frictionally engaged with each other by being pressed in an axial direction; an input rotary member that rotates together with the outer clutch plates; an output rotary member that rotates together with the inner clutch plates; a cam mechanism that generates cam thrust force for pressing the multi-disc clutch in the axial direction upon reception of torque generated by the electric motor; a strain sensor that detects reaction force against the cam thrust force; and a spring member that is disposed between the cam mechanism and the strain sensor and that buffers an impact transmitted from the cam mechanism to the strain sensor. | 09-25-2014 |
| 20140274543 | ELECTROMAGNETIC CLUTCH UNIT, FOUR-WHEEL-DRIVE VEHICLE, CONTROL METHOD FOR THE ELECTROMAGNETIC CLUTCH UNIT, AND CONTROL METHOD FOR THE FOUR-WHEEL-DRIVE VEHICLE - An electromagnetic clutch unit includes: a friction mechanism including a first friction member and a second friction member; a lock sleeve connected to an input shaft member so as to be non-rotatable relative to the input shaft member, and movable in an axial direction of the electromagnetic clutch unit between a first position at which the lock sleeve is engaged with only the input shaft member and a second position at which the lock sleeve is engaged with both an output shaft member and the input shaft member; and a pressing member that constitutes a magnetic path extending over the pressing member and the second friction member, and that presses the lock sleeve with the electromagnetic force to move the lock sleeve from the first position to the second position. | 09-18-2014 |
| 20140260746 | BALL SCREW DEVICE - A ball screw device includes a cylinder that surrounds the outer periphery of a ball nut. Accommodation holes are formed in the ball nut at a rolling start position and a rolling end position in ball rolling paths. An outer periphery turning groove is formed in an outer peripheral face of the ball nut, and the outer periphery turning groove and an inner peripheral face of the cylinder constitute a turning rolling path. The turning rolling path and connection passages formed in deflectors constitute a circulation path through which balls are returned from the rolling end position to the rolling start position. | 09-18-2014 |
| 20140257642 | ELECTRIC POWER STEERING SYSTEM - In an electric power steering system, an ECU calculates a steering angle of a steering wheel based on an output of a rotation angle sensor and an EPS gear ratio. The ECU calculates a correction amount for canceling a steering deviation caused due to a temperature change, based on a temperature of a rack shaft detected by a temperature sensor and a map stored in a memory, and corrects the correction amount by adding the correction amount to the calculated steering angle. | 09-11-2014 |
| 20140257638 | CONTROL APPARATUS FOR HYDRAULIC POWER STEERING SYSTEM - In a control apparatus for a hydraulic power steering system including multiple electric pumps, a first ECU determines that start-up of a first motor is completed when a first current value, which is a value of current flowing to a first electric pump, has been within a prescribed current range continuously for a prescribed period of time or longer. An upper limit of the prescribed current range is set to be less than to a limit value provided as an upper limit of a current supplied simultaneously to the first and second electric pumps after completion of start-up. A lower limit of the prescribed current range is set to a minimum value of a current indicating that the first electric pump is in an energized state. After start-up of the first motor is determined to be completed, a second ECU starts electric power supply to the second electric pump. | 09-11-2014 |
| 20140253003 | MOTOR CONTROL UNIT - A motor control unit includes: a microcomputer that outputs a motor control signal; a driving circuit that supplies driving electric power to the motor based on the motor control signal; and a capacitor provided at an intermediate portion of a power supply line that connects the driving circuit and a driving power supply to each other. The microcomputer carries out electric discharge from the capacitor by supplying electric power generated by electric charges stored in the capacitor to the motor such that torque is generated by the motor and an angular velocity of the motor becomes less than or equal to a prescribed angular velocity, with torque transmission between the motor and the wheel interrupted by the clutch after a driving relay is turned off. | 09-11-2014 |
| 20140251083 | DRIVING FORCE TRANSMISSION APPARATUS - A driving force transmission apparatus including a tank which reserves lubricating oil in an accommodating space which is interposed between a housing and an inner shaft and an apparatus case which has a cylindrical accommodating portion which accommodates the housing, and in the case, the accommodating portion has an inner circumferential surface which faces an outer circumferential surface of the housing, and the tank has an oil inlet port which is opened to the inner circumferential surface of the accommodating portion and through which the lubricating oil in the accommodating space is let in based on a centrifugal force generated in association with the rotation of the housing when a four-wheel drive vehicle travels forwards in a two-wheel drive mode. | 09-11-2014 |
| 20140248015 | ROLLING BEARING DEVICE - A lubricant supply unit that supplies lubricating oil to a raceway groove of an inner ring is fixed to an outer ring. The lubricant supply unit is provided with a first and second radially separated electrodes used to supply electric power from an external power source to the micropump. Each of the first and second radially separated electrodes is fixed to an outer face of a tank that is stationary relative to the micropump so as to be exposed on the outside of the lubricant supply unit. The first radially separated electrode is arranged so as to be apart from the second radially separated electrode. | 09-04-2014 |
| 20140242882 | GRINDING MACHINE AND GRINDING METHOD - There are provided a grinding machine and a grinding method that make it possible to achieve a high degree of accuracy of the roundness of a workpiece. As at least one of a coolant dynamic pressure and a grinding efficiency varies depending on a phase of the workpiece, a pressing force in the cut-in direction, which an eccentric cylindrical portion of the workpiece receives from a grinding wheel, varies and a degree of deflection of the eccentric cylindrical portion also varies. In the grinding machine, the degree of deflection during grinding is acquired based on the coolant dynamic pressure and the grinding efficiency, a first correction value for a command position of the grinding wheel relative to the eccentric cylindrical portion is computed, and the command position is corrected based on the first correction value. | 08-28-2014 |
| 20140239381 | INSULATED GATE FIELD EFFECT TRANSISTOR AND METHOD OF MANUFACTURING THE SAME - An insulated gate field effect transistor configured to reduce the occurrence of a short-circuit fault, and a method of manufacturing the insulated gate field effect transistor are provided. A FET includes a semiconductor substrate, a gate insulator, a gate electrode, and a conductive member. The semiconductor substrate has an insulation groove that splits a channel region into a first channel region on a drain region side and a second channel region on a source region side. The conductive member is supported by a drain-side end face and a source-side end face of the insulation groove. When the temperature of the conductive member is equal to or higher than a predetermined temperature, the conductive member is cut. | 08-28-2014 |
| 20140238770 | ELECTRIC POWER STEERING APPARATUS - An electric power steering apparatus includes a controller that controls, based on an assist command value, driving of a motor used to apply assist torque to a steering mechanism. The controller calculates a first assist component based on a steering torque transmitted to the steering mechanism and calculates a steered angle command value based on the steering torque. The controller executes feedback control to cause a steered angle of steerable wheels to agree with the steered angle command value, thereby calculating a second assist component. The controller calculates the assist command value based on a value obtained by adding the assist components. The controller estimates a grip factor of the wheels on a road surface on which the wheels are traveling based on the steering torque, a first assist torque determined based on the first assist component, and a second assist torque determined based on the second assist component. | 08-28-2014 |
| 20140238769 | ELECTRIC POWER STEERING APPARATUS - A zero point change model executes banked road correspondence control when a vehicle travels on a banked road. By this control, a target turning angle when the total torque is zero can be changed from a neutral turning angle to a lower side of an inclined road surface. Thus, a steering angle of a steering wheel according to a banked road can be realized even if the driver does not apply steering torque during traveling on a banked road. Accordingly, the driver can obtain a suitable steering feeling when traveling on a banked road while achieving the target turning angle according to the total torque. | 08-28-2014 |
| 20140238768 | ELECTRIC POWER STEERING APPARATUS - An end determination unit determines that a steering apparatus is in an end touching state when an angle deviation, which is a difference between an actual turning angle and a target turning angle, exceeds a threshold. This angle deviation exceeds the threshold before a large axial force is generated in a steering shaft. Accordingly, is it possible to determine that the steering apparatus is in the end touching state more quickly. | 08-28-2014 |
| 20140238766 | VEHICLE AND VEHICLE DRIVING DEVICE - A vehicle includes: a pair of front wheels; a pair of rear wheels; a front-wheel motor configured to drive the front wheels; a rear-wheel motor configured to drive the rear wheels; and a reducer configured to reduce a rotation speed of one of the front-wheel motor and the rear-wheel motor, and transmit drive power to the wheels driven by one of the motors. The one of the front-wheel motor and the rear-wheel motor is a motor with a rotation speed higher and torque lower than those of the other one of the motors. | 08-28-2014 |
| 20140230249 | METHOD FOR MANUFACTURING HUB RING AND METHOD FOR MANUFACTURING VEHICLE BEARING APPARATUS - A method for manufacturing a vehicle bearing apparatus includes a method for manufacturing a hub ring. The hub ring includes a seal facing surface, a flange portion, and a shaft body portion. The flange portion includes a thin portion, a thick portion, bolt holes, a thin portion outer surface, a thick portion outer surface, and bolts. The flange portion protrudes outward from the shaft body portion. The thick portion is formed on an outer side with respect to the bolt holes in the flange portion, and the thin portion is formed on an inner side with respect to the thick portion in the flange portion. In the method for manufacturing the hub ring, machining is performed on the thick portion outer surface by using the seal facing surface subjected to grinding, as a reference surface, after the bolts are fitted into the flange portion. | 08-21-2014 |
| 20140222294 | AUXILIARY POWER SUPPLY DEVICE AND ELECTRIC POWER STEERING SYSTEM INCLUDING AUXILIARY POWER SUPPLY DEVICE - An auxiliary power supply device includes a capacitor that is connected to a main power source, and that is able to discharge an electric current to an electric motor, the main power source supplying electric power to the electric motor; and a booster circuit that boosts a voltage of the main power source and applies the boosted voltage to the auxiliary power source. An operation of the auxiliary power supply device is controlled by a control device. When supply of the electric power from the main power source to the capacitor is started in a state where a voltage across terminals of the capacitor is equal to or higher than a voltage of the main power source, the control device increases the voltage applied to the capacitor by the booster circuit as the capacitor voltage increases. | 08-07-2014 |
| 20140221107 | DOUBLE-ROLLER-TYPE TRIPOD CONSTANT-VELOCITY JOINT - One end face of an outer roller is provided with an annular rib that protrudes radially inward and that retains an inner roller and rolling elements. The other end face-side portion of the outer roller is provided with an inner component retaining portion that retains the inner roller and the rolling elements. In a roller unit in which the inner roller and the rolling elements are retained in the outer roller by the rib and the inner component retaining portion, an inner peripheral face of the inner roller through which a tripod shaft portion is passed is provided with a tripod shaft portion insertion restricting portion that allows the tripod shaft portion to be passed through the inner roller only from an end face side of the roller unit, on which the rib of the outer roller is not provided. | 08-07-2014 |
| 20140217940 | ELECTRICALLY OPERATED POWER STEERING DEVICE - An electric power steering apparatus includes an EPS actuator that applies assist force to a steering system, and an ECU that controls operation of the EPS actuator. The ECU includes an inverter device, a gate driver circuit, a gate driver power source, a microcomputer, and the like. The microcomputer switches assist control to assist stop control, based on an indication of a voltage decrease in the gate driver power source. | 08-07-2014 |
| 20140216183 | STEERING SYSTEM - A steering system includes: pinion teeth coupled to a steering shaft to transmit steering torque; pinion teeth that transmit assist torque based on the steering torque; a rack shaft that meshes with the pinion teeth at a first meshing portion and meshes with the pinion teeth at the second meshing portion; a tubular rack housing that accommodates the rack shaft; and a rack bushing that supports the rack shaft in the rack housing. The rack busing supports the rack shaft, at a position between the first meshing portion and the second meshing portion. | 08-07-2014 |
| 20140213147 | MEASURING METHOD AND GRINDING MACHINE - In a measuring method in which a sizing device is activated only for a prescribed measurement time (t | 07-31-2014 |
| 20140212593 | METHOD OF MANUFACTURING SPLINE TELESCOPIC SHAFT - A method of manufacturing a spline telescopic shaft, includes a sliding step of sliding in an axial direction an inner shaft manufacturing intermediate member and an outer shaft manufacturing intermediate member, in one of which a resin coating is disposed on splines. In the sliding step, a sliding load of the inner shaft manufacturing intermediate member and the outer shaft manufacturing intermediate member is detected, and sliding is ended at a timing when the detected sliding load reaches a threshold load which is determined based on an initial sliding load detected at a start of the sliding. | 07-31-2014 |
| 20140209403 | VEHICLE STEERING SYSTEM - In a vehicle steering system provided in a vehicle in which a high-voltage battery is provided, a clutch mechanism is mechanically disconnected and the intermediate shaft falls, after a collision of the vehicle is detected. An ECU detects the collision of the vehicle based on an acceleration that is input, and then detects contraction of the column shaft and disconnection of the clutch mechanism based on an ON signal of a microswitch. Thereafter, the ECU is able to continue to rotationally drive an electric motor based on a steering angle signal that is output from a steering angle sensor provided on the column shaft, and that is electrically insulated through a photo coupler, and thus the ECU causes the vehicle to travel and stop. | 07-31-2014 |
| 20140207337 | ELECTRIC POWER STEERING APPARATUS - The control apparatus calculates the first assist component on the basis of the steering torque. The control apparatus calculates the turning angle command value from the steering torque and the first assist component on the basis of the ideal model, executes turning angle feedback control for matching the actual turning angle with the turning angle command value, and calculates the second assist component. The control apparatus adds the second assist component to the first assist component to calculate the assist command value. When the deviation between the actual turning angle and the turning angle command value is out of the allowable range, the control apparatus changes the ideal model to remove the second assist component from the assist command value and enhance convergence of the turning angle feedback control system. | 07-24-2014 |
| 20140207335 | ELECTRIC POWER STEERING SYSTEM - There is provided a drive control method for a motor including multiple sets of coils and drive circuits in an electric power steering system. In order to reduce computational load when sensorless control is executed, an electrical angle estimator includes an α-axis voltage component adder and a β-axis voltage component adder that add together voltage vectors of a first coil and a second coil expressed in a two-phase fixed coordinate system, an α-axis current component adder and a β-axis current component adder that add together current vectors of the first coil and the second coil expressed in a two-phase fixed coordinate system, and an induced voltage computing unit that computes an induced voltage based on an added voltage vector and an added current vector. | 07-24-2014 |
| 20140205228 | CAGE AND THRUST ROLLER BEARING INCLUDING CAGE - A cage, which is annular, and is used in a thrust roller bearing, includes a plurality of cage segments arranged in a circumferential direction. Each of the cage segments includes an arc portion; and a bar portion that extends radially inward from the arc portion and that maintains a circumferential interval between rollers adjacent to each other. A groove portion extending along an axial direction is formed at each of end faces of the arc portions, the end faces facing each other in the circumferential direction. In the cage, elastic bodies are inserted into the groove portions and urge the arc portions in the circumferential direction, each of the elastic bodies is disposed between the end faces facing each other, and the cage segments are connected to each other by the elastic bodies. | 07-24-2014 |
| 20140200767 | MOTOR CONTROL DEVICE AND ELECTRIC POWER STEERING APPARATUS - A motor control apparatus includes a plurality of voltage detecting sections configured to each detect a terminal voltage of one of phases of a brushless motor, and a control section configured to control driving of the motor. The control section takes in, via separate signal lines, detection signals of the voltage detecting sections. When the condition that any two of terminal voltage detection values of respective phases obtained from the detection signals of the voltage detecting sections are continuously equal to each other is satisfied, the control section determines that a short circuit has occurred between any of the signal lines. | 07-17-2014 |
| 20140199010 | ROLLING BEARING UNIT - A rolling bearing unit includes: a rolling bearing having an inner ring, an outer ring arranged, multiple rolling elements, and a cage; and a cage guide member that is formed integrally with the outer ring or formed as a member different from the outer ring, and that is fixed to the housing side. The cage guide member has a guide projection projected into an annular space between the inner and outer rings and having an outer peripheral face a part of which serves as the guide face, and a grease supply portion having a grease reservoir portion in which the grease is reserved. A supply port through which the grease is supplied from the grease reservoir portion to the guide face is formed on the outer peripheral face of the guide projection, at a position closer to a base end portion of the guide projection than the guide face. | 07-17-2014 |
| 20140197003 | SLIDING MEMBER, CLUTCH PLATE, AND PRODUCTION METHODS THEREOF - A sliding member includes a base material portion formed of steel; a nitrogen diffusion layer with a thickness of 10 μm to 50 μm; and a nitrogen compound layer with a thickness of 10 μm to 50 μm. The nitrogen compound layer and the nitrogen diffusion layer are formed by performing a first heating process of performing heat treatment on a material formed of steel in an ammonia atmosphere at a temperature of 570° C. to 660° C., a second heating process of performing heat treatment on the material in a non-oxidizing and non-ammonia atmosphere at a temperature of 660° C. to 690° C., the temperature in the second heating process being higher than the temperature in the first heating process, and an oil cooling process of performing oil cooling treatment at an oil temperature of 60° C. to 80° C. subsequently to the second heating process. | 07-17-2014 |
| 20140191625 | ABNORMALITY DETECTION SYSTEM FOR ROTATION ANGLE SENSOR - In an abnormality detection system for a rotation angle sensor, a fact that an abnormality has occurred in one of sine signals (S | 07-10-2014 |
| 20140187374 | LIQUID-LUBRICATED BEARING AND VEHICLE PINION SHAFT SUPPORT DEVICE - An outer lubricating liquid inflow passage that provides communication between an outside of a liquid-lubricated bearing and a rolling element arrangement chamber is formed between an outer ring and a cage, on the lubricating liquid inflow side. The outer lubricating liquid inflow passage has an annular axially extending outer passage portion that extends in the axial direction, and an annular radially extending outer passage portion. The radially extending outer passage portion communicates with a rolling element-side axial end portion of the axially extending outer passage portion. The radially extending outer passage portion extends from the axially extending outer passage portion to the rolling element arrangement chamber inward in the radial direction of the outer ring. A labyrinth is formed by the axially extending outer passage portion and the radially extending outer passage portion. | 07-03-2014 |
| 20140182995 | CLUTCH PLATE - In a clutch plate of an annular shape and a wet type, a plurality of lubrication grooves each taking a U-shape in cross-section are formed on a friction engaging surface on at least one end side. The groove is provided with a groove forming portion crossing the circumferential direction and blunt portions extending along both sides of the groove forming portion and connecting the friction engaging surface with the groove forming portion. Where a straight line passing across one side end of the groove and extending in a radial direction is assumed as a virtual straight line, in a section of the groove taken along a plane that is orthogonal to the virtual straight line and that includes the one side end, the width of the blunt portion on one side is in a range of 0.12 to 0.35 mm, and the depth of the blunt portion is in a range of 25 to 50 μm. | 07-03-2014 |
| 20140182410 | STEERING DEVICE - A steering device includes: a steering shaft; an inner jacket; a column jacket that includes an outer jacket that covers the inner jacket from outside, and supports the steering shaft; a movable bracket that is fixed to the inner jacket; a fixation bracket that has a retention portion, and is fixed to a vehicle body; and a press contact/release portion that brings a first plate-shaped region and a second plate-shaped region into press contact with each other along the plate thickness direction to press the first plate-shaped region and the second plate-shaped region against the retention portion, and releases the first plate-shaped region and the second plate-shaped region from a state of being in press contact with each other and a state of being pressed against the retention portion. | 07-03-2014 |
| 20140180544 | ELECTRIC POWER STEERING SYSTEM - When a steering speed reaches a steering speed determination threshold, a steering speed gain is set to “0”. As a result, a final basic assist controlled variable becomes “0”, and application of an assist force to a steering system is stopped. Therefore, repetition of so-called reverse assist that is a cause of occurrence of an unintended steering behavior, such as self-excited vibration, is stopped. Accordingly, the steering behavior is improved. | 06-26-2014 |
| 20140178239 | VANE PUMP - A vane pump includes a housing, a cam ring, a rotor, a plurality of vanes that forms a plurality of pump chambers, a side plate constituting a portion of an intake port, an intermediate plate axially adjacent to the housing and the side plate, and a cover member. A portion of a flow passage, through which a fluid flows, is constituted by a surface of the intermediate plate and at least one of the housing, the side plate, and the cover member, the surface of the intermediate plate being adjacent to the at least one of the housing, the side plate, and the cover member. A through-hole or a recessed portion is formed in the intermediate plate, and the through-hole or the recessed portion of the intermediate plate and the side plate constitute a portion of the intake port. | 06-26-2014 |
| 20140175862 | VEHICLE BEARING DEVICE - A hub of a vehicle bearing device has a cylindrical portion and a flange portion. The flange portion has a pin hole formation portion, a reference position intermediate portion, separate position intermediate portions, and build-up portions. The reference position intermediate portion is formed between bolt hole formation portions. The first separate position intermediate portion is formed between bolt hole formation portions. The second separate position intermediate portion is formed between bolt hole formation portions. The pin hole formation portion is formed at the reference position intermediate portion, and has a hub side pin hole. A pin for fixing the hub and a brake rotor to each other is inserted into the hub side pin hole. The build-up portions are formed on the separate position intermediate portions, and are balanced in terms of weight with the pin-hole formation portion. | 06-26-2014 |
| 20140174844 | ELECTRICAL POWER STEERING APPARATUS - A motor control circuit includes a power relay, a converter division, a smoothing condenser, a control circuit and a motor drive circuit, and is connected to a battery as high voltage power and to an electrical motor. The battery is connected with a driving battery having the high voltage such as 288V etc. A step down circuit reduces the high voltage to a low voltage such as 36V etc., charges a low voltage charge device and supplies drive power to the motor drive circuit. When the vehicle collision is occurred, the control circuit detects the collision by a value of detected acceleration, a power change relay is turned on to change to the power source from the low voltage charge device after voltage of the smoothing condenser is reduced, thereby connecting the low voltage to the motor drive circuit. | 06-26-2014 |
| 20140174242 | STEERING SYSTEM AND CROSS JOINT - In a steering system that includes: an intermediate shaft on a steering wheel side; a pinion shaft on a steered wheel side; and a cross joint by which the intermediate shaft and the pinion shaft are rotatably connected to each other on a plane intersecting with each of the shafts, and that steers steered wheels by transmitting steering torque of a steering wheel from the intermediate shaft to the pinion shaft, a weakened portion is formed in a joint spider of the cross joint. The weakened portion can be identified in advance as a portion that breaks first. This makes it possible to realize a failure mode in which a vehicle is able to run by itself for a certain period of time after a failure. | 06-26-2014 |
| 20140174202 | TORQUE DETECTOR AND STEERING SYSTEM INCLUDING THE TORQUE DETECTOR - A torque detector includes: a magnetic flux collecting unit including a magnetic flux collecting holder formed in an annular shape by resin molding and a magnetic shield formed by bending a metal plate and attached to an outer peripheral face of the magnetic flux collecting holder; and a sensor housing formed integrally with the magnetic flux collecting unit. The magnetic shield has a shield body, a shield end portion, and a bent portion. A second angle formed between an outer side face of the shield end portion and a radial direction is smaller than a first angle formed between an outer peripheral face of the shield body and the radial direction. | 06-26-2014 |
| 20140172258 | CONTROL APPARATUS FOR FOUR WHEEL DRIVE VEHICLE - An ECU of a four wheel drive vehicle controls a transmission torque of a driving force transmission apparatus provided between a rear differential and a left rear wheel. The ECU includes a first computation unit that computes a command torque to be transmitted to the left rear wheel by the driving force transmission apparatus, based on a traveling state of the four wheel drive vehicle; and a second computation unit that corrects the command torque computed by the first computation unit, if a difference between rotation speeds of a pair of side gears of the rear differential is larger than or equal to a predetermined value. | 06-19-2014 |
| 20140165753 | TRANSMISSION RATIO VARIABLE DEVICE - A preload adjusting plug is inserted through a communication hole extending through center portions of a Z1 gear, a Z4 gear, and an inner ring of a nutation gear. A male thread portion is formed at an outer periphery of one end of the preload adjusting plug, and is screwed to a female thread portion formed at an inner periphery of the Z1 gear. A disc-shaped flange portion extending radially outward is formed at the other end of the preload adjusting plug, and axially presses a back face of the Z4 gear through a bearing. The preload adjusting plug applies predetermined preloads to meshing portions in the nutation gear mechanism. | 06-19-2014 |
| 20140163923 | PHASE DIFFERENCE DETECTOR AND ROTATION ANGLE DETECTION DEVICE INCLUDING THE SAME - In a phase difference detector, a first phase difference computation unit computes a value of E(i)·C corresponding to one and the same given magnetic pole sensed by the two magnetic sensors with use of six output signals sampled at three different timings while the two magnetic sensors are sensing the given magnetic pole when a rotary body is rotating. E is an angular width error correction value, and C is a phase difference between two signals. The first phase difference computation unit executes this process until values of E(i)·C corresponding to all the magnetic poles are computed. After that, the first phase difference computation unit computes the phase difference between the output signals with use of the values of E(i)·C corresponding to all the magnetic poles and the number (m) of the magnetic poles. | 06-12-2014 |
| 20140163922 | ROTATION ANGLE DETECTION DEVICE - In a rotation angle detection device, when a condition that two sensors among three magnetic sensors sense one and the same magnetic pole for three consecutive sampling periods is satisfied, a rotation angle is computed based on output signals from the two sensors, sampled at three sampling timings. When the output signals sampled at the three sampling timings satisfy a prescribed requirement, an angular width error correction value corresponding to the magnetic pole sensed by the two sensors and amplitudes are computed, and stored in association with the magnetic pole. If the condition is not satisfied, the rotation angle is computed based on the information stored in a memory and the output signals from two sensors among the three magnetic sensors, the two magnetic sensors including one of the three magnetic sensors, which detects the magnetic pole of which the angular width error correction value is stored in the memory. | 06-12-2014 |
| 20140163921 | ROTATION ANGLE DETECTION DEVICE - In a rotation angle detection device, each of an angular interval between a first magnetic sensor and a second magnetic sensor and an angular interval between the second magnetic sensor and a third magnetic sensor is 60° in electrical angle. When two magnetic sensors including the second magnetic sensor among the three magnetic sensors are operating properly, if the two properly operating magnetic sensors including the second magnetic sensor sense one and the same magnetic pole for a prescribed number of multiple consecutive sampling periods, the rotation angle is computed based on the output signals from the two magnetic sensors. When only the second magnetic sensor malfunctions, if the first and the third magnetic sensors sense one and the same magnetic pole for the prescribed number of multiple consecutive sampling periods, the rotation angle is computed based on the output signals from the two properly operating magnetic sensors. | 06-12-2014 |
| 20140163831 | DRIVING FORCE TRANSMISSION CONTROL APPARATUS - A driving force transmission control apparatus includes a multiple disc clutch including a plurality of outer clutch plates, and a plurality of inner clutch plates; a pressing mechanism that presses the multiple disc clutch; and a control portion that controls the pressing mechanism. The outer clutch plates and inner clutch plates are engaged with an intermediate shaft and an inner shaft respectively. The control portion makes a determination as to whether the multiple disc clutch is in a first operating condition in which the multiple disc clutch is pressed with a relative rotation speed between the intermediate and the inner shafts being equal to or higher than a predetermined value, or in a second operating condition in which the multiple disc clutch is pressed with the relative rotation speed being lower than the predetermined value, and the control portion controls the pressing mechanism based on a result of the determination. | 06-12-2014 |
| 20140163698 | PROGRAMMABLE LOGIC CONTROLLER COMMUNICATION SYSTEM - A PLC communication system includes a PLC; a plurality of devices; three or more communication processing nodes that are provided respectively in the PLC and the devices to allow the PLC to communicate with each of the devices; and a plurality of communication lines that connect the communication processing nodes to each other to allow data communication. The PLC detects an incommunicable state between two of the communication processing nodes. The PLC communication system further includes a display device, and in a case where there are a plurality of types of incommunicable states detected by the PLC, the display device displays a portion where communication lines constituting the incommunicable states among the plurality of communication lines overlap with each other, as a line failure portion. | 06-12-2014 |
| 20140158855 | HYDROSTATIC FLUID GUIDE DEVICE - In a hydrostatic fluid guide device, a damping mechanism is provided. A fluid is supplied to the damping mechanism by a hydrostatic pressure caused by natural fall, instead of being pressurized and supplied. Thus, it is possible to suppress a decrease in the pressure of the fluid in a hydrostatic fluid guide mechanism, and to position a movable body with high accuracy by setting rigidity for load support during linear movement of the movable body to a value substantially equal to a design value. | 06-12-2014 |
| 20140158455 | ROTATION ANGLE DETECTION DEVICE AND ELECTRIC POWER STEERING SYSTEM INCLUDING THE SAME - Rotation angle computation modes include a normal mode and a simple mode. In normal mode, a rotation angle of an input shaft is computed based on output signals from first and second magnetic sensors, which are sampled at two sampling timings. In simple mode, the rotation angle of the input shaft is computed based on the output signals from the first and second magnetic sensors, which are sampled at one sampling timing, and an amplitude ratio between the output signals from the magnetic sensors set in advance. After a power supply is turned on, the rotation angle is computed in the simple mode until a condition that the rotation angle of the input shaft can be computed in the normal mode even if the immediately preceding value of the rotation angle of the input shaft is not present is satisfied. Then, the rotation angle is computed in the normal mode. | 06-12-2014 |
| 20140158453 | ROTATION ANGLE DETECTION DEVICE AND ELECTRIC POWER STEERING SYSTEM INCLUDING THE SAME - Sinusoidal signals (S | 06-12-2014 |
| 20140158237 | PRESSURE REDUCING VALVE - A pressure reducing valve comprises an open-close valve and a piston. The open-close valve makes switching between connecting and isolating a primary port and a secondary port. The piston makes sliding motion inside the cylinder according to a difference between force applied from the pressure regulating chamber and force applied from the pressure reducing chamber, thereby opening and closing the open-close valve. The open-close valve includes a valve stem and a valve seat fixing member. The valve seat fixing member restrains displacement of the piston toward a side upstream of the open-close valve by abutting on an end surface of the piston. The valve seat fixing member includes a channel hole communicatively connecting a housing part for the valve stem and the pressure reducing chamber. | 06-12-2014 |
| 20140157880 | STATE DETECTION DEVICE FOR BEARING ROLLER, ROLLER BEARING DEVICE WITH SENSOR, AND WIND TURBINE GENERATOR - A state detection device according to the invention includes a strain gauge that detects a physical state of a tapered roller, and a processing portion that obtains a detection signal that is output from the strain gauge, performs processing on the detection signal, and transmits detection data obtained by performing the processing on the detection signal, to an outside. The strain gauge and the processing portion are accommodated in a through-hole formed at an axis center of the tapered roller. | 06-12-2014 |
| 20140153853 | BALL BEARING - A ball bearing includes: an outer ring; an inner ring having a ring-shaped member fitted portion that has a step portion that extends generally along a radial direction of the outer ring and an outer peripheral face portion; balls disposed between an inner periphery raceway groove of the outer ring and an outer periphery raceway groove of the inner ring; and a ring-shaped lubricant supply member that is fixed to the ring-shaped member fitted portion while being in contact with the step portion. | 06-05-2014 |
| 20140153847 | HYDROSTATIC GUIDE DEVICE AND MACHINE TOOL USING THE HYDROSTATIC GUIDE DEVICE - A hydrostatic guide device includes: a fixed member having vertical guide faces; a movable member having vertical slide faces; a fluid supply device; a hydrostatic pocket to which a first fluid pressure based on a dimension of a gap is applied, and that urges the movable member with a first urging force; and a hydraulic pocket to which a second fluid pressure based on a dimension of a gap is applied, and that urges the movable member with a second urging force. A variation of the second fluid pressure is smaller than a variation of the first fluid pressure. When the first urging force and the second urging force are balanced with each other in a horizontal direction, the gap between the vertical guide face and the vertical slide face becomes a set value. | 06-05-2014 |
| 20140151145 | TWO-PHASE MOTOR AND HYDRAULIC POWER STEERING SYSTEM USING THE TWO-PHASE MOTOR - A two-phase motor with high space utilization efficiency is provided for driving a hydraulic control valve. A valve drive motor includes a rotor and a stator surrounding the rotor. The rotor has six magnetic poles. The stator includes six stator windings. The U-phase first stator winding and the V-phase first stator winding constitute a pair of two-phase stator windings. The U-phase second stator winding and the V-phase second stator winding constitute a pair of two-phase stator windings. The U-phase third stator winding and the V-phase third stator winding constitute a pair of two-phase stator windings. The two stator windings of each pair are disposed at an angular interval of 180 degrees in terms of an electrical angle. | 06-05-2014 |
| 20140147547 | MOLDING DIE FOR MOLDING BOOT FOR CONSTANT VELOCITY JOINT - An inner die of a molding die includes a core shaft, split dies radially arranged along an outer peripheral surface of the core shaft around an axis of the core shaft, which serves as a center, and a cylindrical set ring arranged below the split dies, the core shaft being inserted through the set ring. An annular engaging surface, which is a tapered surface whose diameter is gradually reduced downward, is formed in an inner peripheral side of an upper end portion of the set ring, and lower end portions of the respective split dies are introduced into, and engaged with the engaging surface. The molding die includes a pressing portion that presses downward upper end portions of the respective split dies introduced into the set ring, so as to move the lower end portions of the respective split dies toward the axis along the engaging surface. | 05-29-2014 |
| 20140147197 | COUPLING STRUCTURE FOR COUPLING SHAFT TO UNIVERSAL JOINT YOKE, COUPLING METHOD FOR COUPLING SHAFT TO UNIVERSAL JOINT YOKE, AND INTERMEDIATE SHAFT - In a coupling structure for coupling a shaft to a universal joint yoke, an insertion portion of a shaft is passed through an insertion hole of a universal joint yoke. An outward protrusion of a distal end portion of the shaft faces a peripheral edge of a first opening of the insertion hole across a gap in an axial direction. A fixed portion that adjoins the insertion portion is fixed to a peripheral edge of a second opening of the insertion hole by welding. An engaging portion formed on an outer periphery of the insertion portion and an engaged portion formed in an inner periphery of the universal joint yoke, which defines the insertion hole, are engageable with each other in a rotational direction with a rotation permitting gap for phase adjustment. | 05-29-2014 |
| 20140145372 | METHOD OF MOLDING BOOT FOR CONSTANT VELOCITY JOINT - A method of molding a boot for a constant velocity joint includes: molding a compact by injection molding; raising split dies of an inner die so as to separate the split dies from a set ring; raising a core shaft of the inner die so as to separate the core shaft from the split dies; separating each of the split dies from the compact; introducing a lower end portion of the separated split die into the set ring along an engaging surface; and inserting a lower end portion of the core shaft through the set ring from above the set ring, and pressing upper end portions of the split dies downward by a protruding portion at an upper end portion of the core shaft so that the lower end portions of the split dies are engaged with the engaging surface and the split dies are brought into close contact. | 05-29-2014 |
| 20140144277 | STEERING SYSTEM - In a steering system including a lock mechanism, at a time of locking, a first cam that is rotated together with a lock shaft generates a pressing force for pushing up an inner tube in an upward tilt direction. A second cam that is rotated together with the lock shaft presses an abutting portion of an urging member in a downward tilt direction. The abutting portion of the urging member applies a pressing reaction force in the upward tilt direction, to the second cam. The pressing reaction force serves as a force for pushing up the first cam in the upward tilt direction, through the second cam and the lock shaft. | 05-29-2014 |
| 20140144263 | BALL SCREW AND ELECTRIC POWER STEERING SYSTEM INCLUDING BALL SCREW - There are provided a ball screw that makes it possible to prevent a situation where a large load is applied to a part of a plurality of balls, and an electric power steering system including the ball screw. The ball nut is a component that surrounds a part of the male thread groove, and has a nut inner surface and a female thread groove. The female thread groove is formed in the nut inner surface, and forms a part of the rolling path. A female thread diameter varies according to a position in an axial direction of the ball nut. The female thread diameter is larger at each of axially ends of the ball nut than at an axially intermediate portion of the ball nut, and the female thread diameter is larger at one of the axially ends than at the other of the axially ends. | 05-29-2014 |
| 20140139207 | STEERING SYSTEM - A steering system includes a steering shaft an electric motor that assists a steering component; a torque detection device that generates a first detection signal according to a steering torque; and a compensation sensor that generates a second detection signal according to a magnetic flux around the steering shaft and its surrounding structure. In the steering system, an output signal, in which an influence of the magnetic field around the steering shaft and its surrounding structure is reduced, is generated based on a signal correction computing equation based on information on correlation between the first detection signal and the second detection signal. Then, in the steering system, the electric motor is driven based on the output signal. | 05-22-2014 |
| 20140139158 | MOTOR CONTROL DEVICE AND STEERING DEVICE FOR VEHICLE - In a state in which the energization in the first direction is possible between the motor and the drive circuit and the motor is not rotating at high speed, when the phase induced voltage value of the specific phase that is the target of determination is continuously equal to or smaller than the abnormality determination threshold, the abnormality detecting unit determines that an open malfunction has occurred in the relay FET of the specific phase. | 05-22-2014 |
| 20140137694 | STEERING SYSTEM - A steering system includes an outer tube at an upper side and an inner tube at a lower side that slide relative to each other in an axial direction when shock is absorbed. A first sliding resistance reducing element, which comes into contact with an inner periphery of the outer tube, and reduces sliding resistance between both the tubes, is retained in at least a circumferential lower region of an axial upper end portion of the inner tube. A second sliding resistance reducing element, which comes into contact with an outer periphery of the inner tube, and reduces the sliding resistance between both the tubes, is retained in at least a circumferential upper region of an axial lower end portion of the outer tube. | 05-22-2014 |
| 20140137692 | STEERING SYSTEM - A steering system includes a rack shaft, a rack housing, a rack end, and an impact absorbing member that is provided between a restriction face formed within the rack housing and an end face of the rack end, and that absorbs an impact generated when the restriction face and the end face come into contact with each other. The impact absorbing member includes an elastic portion, and a restriction portion having an elastic modulus higher than that of the elastic portion and having a length in the axial direction, which is shorter than that of the elastic portion. A compression allowance, which is a difference in length in the axial direction between the elastic portion and the restriction portion, is brought to zero when the restriction face and the end face come into contact with each other via the impact absorbing member due to a steering input. | 05-22-2014 |
| 20140137674 | TRANSMISSION RATIO VARIABLE DEVICE - A preload applying mechanism includes a preload adjusting plug that is screwed to an inner peripheral surface of a housing body, and is rotationally moved; and a needle bearing and a plate that are arranged between an output shaft and a Z1 gear. In a shoulder of the output shaft, the Z1 gear is supported by the needle bearing and the annular plate for a rolling surface of the needle bearing so that the Z1 gear is rotatable. As the preload adjusting plug presses the output shaft, the shoulder of the output shaft presses the plate, the needle bearing, and the Z1 gear toward the center bearing in the axial direction. Thus, a preload is applied to the bearing gear. | 05-22-2014 |
| 20140136124 | TRANSMISSION TORQUE ESTIMATION UNIT - A transmission torque estimation unit estimates a torque transmittable between an outer rotary member and an inner rotary member with respect to a control signal based on: a first model obtained by modeling an equation of motion of the outer rotary member in a rotation direction; a second model obtained by modeling an equation of motion, in the rotation direction, of a support cam member and an inner pilot clutch disc as one unit; a third model obtained by modeling an equation of motion of the outer main clutch discs in the rotation direction; a fourth model obtained by modeling an equation of motion of the inner rotary member in the rotation direction; and a fifth model containing a viscoelastic model and obtained by modeling an equation of motion, in an axial direction, of the inner main clutch disc and the movable cam member as one unit. | 05-15-2014 |
| 20140136062 | FOUR-WHEEL-DRIVE VEHICLE - A four-wheel-drive vehicle includes a first driving force transmission system and a second driving force transmission system. A control device controls the second driving force transmission system. The control device includes a road surface state determination section that determines whether a coefficient of friction of a road surface is equal to or higher than a predetermined value based on an index value regarding the coefficient of friction of the road surface, controls a dog clutch such that the dog clutch is engaged irrespective of the index value regarding the coefficient of friction of the road surface when an ignition switch is brought into the on-state, and controls the dog clutch such that the dog clutch is brought into the disengaged state when it is determined that the coefficient of friction of the road surface is equal to or higher than the predetermined value. | 05-15-2014 |
| 20140136055 | ELECTRIC POWER STEERING SYSTEM - An electric power steering system includes: an electric motor that generates assist torque; an auxiliary power supply device including a capacitor connected to a main power supply and discharging electric power to the electric motor; and a control device that controls the auxiliary power supply device. There is a plurality of modes of connection between the main power supply and the auxiliary power supply device. The control device switches the mode of connection between the main power supply and the auxiliary power supply device, depending on the situation. | 05-15-2014 |
| 20140131160 | CLUTCH PLATE, CLUTCH UNIT AND DRIVING FORCE TRANSMISSION SYSTEM - An annular wet clutch plate has lubrication grooves formed of multiple grooves in at least one of both axial end faces, the at least one of the both end faces having the lubrication grooves and a frictional engagement surface. The frictional engagement surface has a plurality of small grooves having a width and a depth that are smaller than those of the lubrication grooves. At least one of the small grooves is extended in a direction that crosses a circumferential direction of the annular clutch plate. A mean value of surface roughness of the frictional engagement surface having the small grooves is from 3.0 μm to 4.0 μm when the surface roughness is measured with the use of Rz at three positions that are offset from each other by 120° in the circumferential direction around a central axis of the annular clutch plate. | 05-15-2014 |
| 20140129105 | DRIVING FORCE DISTRIBUTION CONTROLLER AND FOUR-WHEEL DRIVE VEHICLE - A driving force distribution controller comprises: a control device determining the value of torque which must be transmitted to a rear wheel; and a driving force transmission device transmitting torque corresponding to the torque value determined by the control device to the rear wheel. The control device reduces a torque value calculated based on an opening degree of an accelerator and a rotational speed difference when the rotational speed of an engine is lower than a first threshold value but higher than a second threshold value. | 05-08-2014 |
| 20140128192 | MOTOR DRIVING FORCE TRANSMISSION SYSTEM - A motor driving force transmission system includes an electric motor that generates motor torque for actuating a differential mechanism portion and outputs the motor torque, and that has a motor shaft with eccentric portions, and a bearing mechanism including a ball bearing interposed between one-side axial end portion of a housing and one-side axial end portion of a differential case, a ball bearing interposed between the other-side axial end portion of the differential case and one-side axial end portion of the motor shaft, and a ball bearing interposed between the other-side axial end portion of the housing and the other-side axial end portion of the motor shaft. An axial load is applied to the ball bearings of the bearing mechanism by a spring. | 05-08-2014 |
| 20140127978 | DEVICE FOR GRINDING SPHERICAL END FACE OF ROLLER-SHAPED WORKPIECE - An inner rotary retaining member has an annular outward rolling surface formed of part of a radially outward tapered surface centering on the central axis of a first rotary drive shaft. An outer rotary retaining member has an annular inward rolling surface formed of part of a radially inward tapered surface centering on the central axis of a second rotary drive shaft. The rolling surfaces are opposed to each other. A pocket that supports a workpiece such that the workpiece rotates and revolves as the retaining members rotate is formed at a portion of the carrier, the portion being positioned between the rolling surfaces. The central axis of the workpiece supported by the pocket is inclined relative to the central axis of the rotary drive shafts. | 05-08-2014 |
| 20140126852 | CAGE FOR THRUST ROLLER BEARING - A cage bar of at least one of pockets, the cage bar being on one side of the at least one of the pockets in the circumferential direction, has a bent portion that is bent toward one side in an axial direction such that an end face of the cage bar on the other side in the axial direction is recessed toward the one side in the axial direction. Further, a cage bar of the at least one of the pockets, the cage bar being on the other side of the at least one of the pockets in the circumferential direction, has a bent portion that is bent toward the other side in the axial direction such that an end face of the cage bar on the one side in the axial direction is recessed toward the other side in the axial direction. | 05-08-2014 |
| 20140117884 | ELECTRIC POWER STEERING SYSTEM - An electric power steering system includes: an electric motor that generates assist torque based on steering torque; an auxiliary power supply connected in series with a main power supply that supplies electric power to the electric motor, and capable of discharging electric power to the electric motor; and a control device that controls a voltage to be applied to the electric motor. When the auxiliary power supply starts discharging electric power to the electric motor, the control device gradually increases a duty ratio of a switching element, which is a command signal for commanding the auxiliary power supply to discharge electric power. | 05-01-2014 |
| 20140116930 | COOLANT SYSTEM - In a coolant system, the interior of a reservoir frame storing the coolant discharged from a machine tool is partitioned by a partition member into an outer peripheral coolant tub and a central coolant tub. The partition member is formed with a silt that extends in the depth direction to make the outer peripheral coolant tub communicate with the central coolant tub. A suction port of a pump that feeds the coolant in the central coolant tub to a filtering device is arranged in the central coolant tub. The coolant discharged from the machine tool is supplied to the central coolant tub without passing through the outer peripheral coolant tub. At least a part of the coolant filtered by the filtering device is supplied to the outer peripheral coolant tub without passing through the central coolant tub. | 05-01-2014 |
