Patent application number | Description | Published |
20080210499 | Vehicular Brake System - First hydraulic-pressure supply piping extended from an accumulator is connected to a first supply port (that is, to a second pressure chamber) of a cylinder, and to second hydraulic-pressure delivery piping of an ABS via third hydraulic-pressure supply piping having a third linear valve. When the braking hydraulic pressure Pf is reduced in the ABS, the degree and the period of time that the third linear valve is opened are set according to the amount of fluid discharged from the second hydraulic-pressure delivery piping to a reservoir tank through a pressure-reducing valve so that a certain amount of fluid is returned from the first hydraulic-pressure supply piping to the second hydraulic-pressure delivery piping via the third hydraulic-pressure supply piping. | 09-04-2008 |
20080229741 | Vehicular Brake System - In a vehicular brake system, an input piston and a pressure piston are coaxially and axially movably supported in a cylinder, and a brake pedal is coupled to the input piston. Pressure chambers formed on the axially opposite sides of the input piston communicate with each other via a communication passage. A control oil pressure can be supplied to a first supply port of the communication passage, and a reaction-force oil pressure can be supplied to a second supply port of a reaction-force chamber of the input piston, while braking oil pressures can be delivered from delivery ports of the respective pressure chambers. | 09-25-2008 |
20090000716 | Apparatus for Controlling Tire Inflation Pressure - An apparatus for controlling tire inflation pressure includes an outlet side end portion of a supplying passageway provided in an axle hub that is opened on an outer end surface of a vehicle in a flange portion of the axle hub, and an inlet side end portion of an introducing passageway provided in a wheel that is opened on an inner end surface of the vehicle in the wheel of a vehicle wheel assembly, and by mounting the wheel onto the flange portion, the outlet side end portion and the inlet side end portion are air tightly joined each other. Thus, easiness in mounting the vehicle wheel assembly relative to the flange portion of the axle hub can be improved. | 01-01-2009 |
20090007979 | Pressure Accumulating Apparatus - Rotational force from a driving device | 01-08-2009 |
20090048733 | Tire-Pressure Control Apparatus - A tire-pressure control apparatus includes time calculation means for calculating an up time over which the tire pressure of each wheel increases from a lower limit set value to an upper limit set value and a down time over which the tire pressure of the wheel decreases from the upper limit set value to the lower limit set value, on the basis of the detection value of a corresponding pressure sensor; average-rotational-speed calculation means for calculating an average rotational speed of the wheel during the up time on the basis of the detection value of a corresponding wheel speed sensor; first-pump-supplied-air-quantity calculation means ( | 02-19-2009 |
20090049932 | DEVICE FOR DETECTING AMOUNT OF PEDAL OPERATION - In a pedal operation amount detecting apparatus, a brake pedal and a clevis secured at an end portion of an operating rod are pivotably connected by a connecting shaft, a bush is arranged between the brake pedal and the connecting shaft, detectors are attached on an outer circumferential surface of an elastically deformable bush main body of the bush, and an ECU calculates a pedal tread force based on loads detected by the detectors, whereby a simplified structure, an improved mountainability, and a highly accurate detection of an operation amount can be realized. | 02-26-2009 |
20090092508 | ELECTRIC THRUST PISTON PUMP DEVICE - A thrust piston pump apparatus PM | 04-09-2009 |
20090152941 | VEHICLE BRAKE DEVICE AND ITS RESERVOIR - A vehicular braking apparatus including a shut-off valve for shutting off, as needed, a flow of oil from a wheel cylinder to a master cylinder; a pressure increase-decrease control valve increasing and decreasing a pressure in the wheel cylinder; a reservoir receiving and storing in a reservoir chamber the oil from the wheel cylinder when the pressure increase-decrease control valve is in a pressure decrease position; a pump sucking in and pressuring the oil from the reservoir chamber and supplying the oil to the wheel cylinder via the pressure increase-decrease control valve when the pressure increase-decrease control valve is in a pressure increase position; and a communication control valve controlling communication between the master cylinder and the reservoir chamber. The communication control valve is a normally-closed valve and is opened by a suction pressure of the pump. | 06-18-2009 |
20090283191 | DEVICE FOR GENERATING TIRE AIR PRESSURE - A tire-air-pressure-generating apparatus includes an air pump, a pressure control valve, and an adjustment device, which are disposed coaxially in a shaft portion of an axle hub. The air pump includes a pump chamber located in the interior of the axle hub. The pressure control valve and the adjustment device are assembled into a cylinder head, which is assembled airtightly and removably to the axle hub. The cylinder head includes a suction-discharge path, discharge paths, pressure lead paths, and a suction path. | 11-19-2009 |
20090311112 | AIR SUPPLY APPARATUS - An air supply apparatus A includes an air pump | 12-17-2009 |
20100001852 | TIRE RISK JUDGING DEVICE OF WHEEL ASSEMBLY FOR VEHICLE - A tire risk judging device of a wheel assembly for a vehicle includes a pressure sensor detecting air pressure of a tire air chamber, an air pressure-generating device that can supply pressurized air to the tire air chamber, an electronic control unit, and an instrument panel display unit. The electronic control unit computes a supply airflow rate supplied from the air pressure-generating device to the tire air chamber between the present location and a specified location, computes a leakage airflow rate leaked from the tire air chamber between the present location and the specified location, computes air pressure in the specified location of the tire air chamber based on air pressure in the present location of the tire air chamber, the supply airflow rate, and the leakage airflow rate, and judges tire risk in the specified location based on the air pressure in the specified location of the tire air chamber. | 01-07-2010 |
20100018335 | MOTION CONVERTER/TRANSMITTER - An object of the present invention is to provide a compact motion conversion transmission apparatus which can set the transmission characteristic for motion or force as desired over a wide range. The apparatus includes input, intermediate, and output members which are fitted to one another while being aligned with an axis and move in relation to one another while being aligned with the axis. Further, the apparatus includes first transmission means which converts a first motion of the input member to a second motion and transmits the second motion to the intermediate member, the first motion being one of a rectilinear motion along the axis and a rotary motion about the axis, and the second motion being the other of the rectilinear motion along the axis and the rotary motion about the axis; and second transmission means which converts the second motion of the intermediate member to the first motion and transmits the first motion to the output member. At least one of the first transmission means and the second transmission means continuously and nonlinearly varies a ratio of an amount of motion of a motion transmission destination member to an amount of motion of a motion transmission source member according to the amount of motion of the motion transmission source member. | 01-28-2010 |
20100064842 | ROTARY MOTION INPUT TYPE MANIPULATION SIMULATOR - An object of the present invention is to impart a preferred continuous nonlinear characteristic to the relation between the magnitude of operation and an operational reaction force over the entire range of operation of operation means even when a reaction generation spring has a linear spring characteristic. A rotary-motion-input-type manipulation simulator includes an input member which rotates in accordance with a braking operation of a driver applied to a brake pedal; the brake pedal which rotates about the axis and imparts a rotary motion to the input member; a compression coil spring which generates a reaction force linearly according to an amount of deformation thereof; an output member which deforms the compression coil spring; and transmission apparatus provided between the input member and the output member and adapted to convert the rotary motion of the input member to a rectilinear motion and transmit the rectilinear motion to the output member and to transmit the reaction force of the compression coil spring to the input member via the output member. The transmission apparatus continuously and nonlinearly varies a ratio of an amount of rectilinear motion of the output member to an amount of rotary motion of the input member according to the amount of rotary motion of the input member. | 03-18-2010 |
20100066162 | Braking Apparatus For Vehicle - In a braking apparatus for a vehicle, an input piston and a pressurizing piston are movably supported inside a cylinder, thereby sectioning a first pressure chamber, a second pressure chamber, and a third pressure chamber, the second pressure chamber and the third pressure chamber communicating with each other through a communicating path. An ECU causes a control hydraulic-pressure that is adjusted by first and second liner valves to act on the second pressure chamber from the third pressure chamber, thereby assisting the pressurizing piston to enable to output control hydraulic-pressure from the first pressure chamber. A counterforce chamber whose volume decreases as the input piston moves forward is provided inside a cylinder, and a counterforce giving mechanism that can give an operation counterforce to a brake pedal through the input piston by deforming corresponding to decrease of the volume of the counterforce chamber is provided inside the input piston. | 03-18-2010 |
20100070252 | MANIPULATION SIMULATOR - A manipulation simulator including an input member which moves in response to a driver's braking operation; a reaction force generation device which generates a reaction force according to an amount of deformation; an output member which deforms the reaction force generation device; and a transmission device between the input member and the output member, which transmits a reaction force of the reaction force generation device to the input member via the output member. The input member moves rectilinearly; the reaction force generation device generates a reaction force linearly according to its deformation amount; the transmission device converts the input member rectilinear motion to a rotary motion that is transmitted to the output member; and the ratio of the amount of output member motion to the amount of input member motion is varied continuously and nonlinearly according to the amount of input member motion. | 03-18-2010 |
20100071453 | TIRE ACTION FORCE DETECTING DEVICE - An apparatus to accurately detect a force acting on a tire, based on a stress acting on a connection mechanism that connects a wheel and a wheel support member. A tire-acting-force detection apparatus is applied to a vehicle including a wheel unit composed of a wheel and a tire held at an outer circumferential portion of the wheel; a wheel support member which supports the wheel by a wheel support portion perpendicular to a rotation axis such that the wheel can rotate about the rotation axis; and a connection mechanism which connects a circular plate portion of the wheel and a wheel support portion of the wheel support member at a plurality of positions separated from one another about the rotation axis. The tire-acting-force detection apparatus includes a plurality of detection elements detecting stresses acting on each bolt, and an electronic circuit apparatus calculating a tire acting force, which acts at the ground contact point of the tire, based on the detected stresses. | 03-25-2010 |
20100090433 | VEHICULAR SUSPENSION - A suspension including a first support member and a second support member supporting an end portion of a suspension spring located on a side toward a vehicle body and an end portion of the suspension spring located on a side toward a suspension member, respectively, and a motion transmission mechanism adapted to convert a vertical motion of the suspension member to a relative motion in a form of a change in distance between the first support member and the second support member and to transmit the relative motion to one of the first and second support members. The transmission mechanism continuously and nonlinearly varies the ratio of the amount of motion of a motion transmission target to the amount of motion of a motion transmission source according to motion of the motion transmission source, thereby continuously and nonlinearly varying the ratio of the amount of the relative motion to the amount of motion of the suspension member according to the vertical motion of the suspension member. | 04-15-2010 |
20100095755 | PEDAL OPERATION AMOUNT DETECTING APPARATUS - In a pedal operation amount detecting apparatus, a brake pedal and a crevice fixed to an end portion of an operation rod are rotatably coupled by a coupling shaft, a bush is interposed between the brake pedal and the coupling shaft, and detectors are mounted on an outer peripheral surface of a bush body, which is elastically deformable, in the bush, and an ECU estimates an angle between the brake pedal and the operation rod based on a ratio between distortion loads detected by the detectors, and calculates an operation amount of the brake pedal, that is to say, pedal force and a pedal stroke, based on the angle, thereby enabling to improve mountability by simplifying a configuration and to detect the operation amount with a high degree of accuracy. | 04-22-2010 |
20100154899 | PRESSURE CONTROL DEVICE - In a pressure controller, a drive piston and pressure control valve are freely movably supported in a housing, the drive piston is supported by being energized and the pressure control valve is supported by being energized to make a pressure chamber and a decompression chamber communicatively connectible, the drive piston and the pressure control valve are moved by an electromagnetic force of a solenoid via a ring piston to make a hyperbaric chamber and the pressure chamber communicatively connectible and also an external piston is freely movably provided facing the drive piston and by making a control pressure acting on the external piston from a rear pressure chamber on a drive piston side equal to or greater than an external pressure acting from outside from an input unit, pressure control can properly be performed by readily moving a drive valve by pressure from outside when a power supply is defective. | 06-24-2010 |
20100170605 | TIRE-PRESSURE CONTROL APPARATUS - A tire-pressure control apparatus includes an air pump driven by a rotating wheel to supply compressed air to a tire air chamber, a mechanical control valve that permits and prohibits supply of compressed air from the air pump to the tire air chamber, a valve-state detection sensor that detects the state of the control valve, a wheel speed sensor that detects rotational speed of the wheel, and an electric control unit (ECU). The ECU calculates a quantity of compressed air supplied from the air pump to the tire air chamber during a permission-state retention time, during which the control valve is in the permission state, and calculates an average leaked air quantity per unit time in a single cycle starting when the control valve enters a prohibition state and ending when the control valve again enters the prohibition state after entering the permission state. | 07-08-2010 |
20100171363 | BRAKE APPARATUS FOR VEHICLE - A brake apparatus for a vehicle has a master cylinder ( | 07-08-2010 |
20100192681 | PEDAL OPERATION AMOUNT DETECTING APPARATUS - A device for detecting the amount of pedal operation, in which a brake pedal ( | 08-05-2010 |
20100212314 | BRAKE SYSTEM FOR VEHICLE - A brake system for a vehicle including a master cylinder in which a front pressure chamber and a rear pressure chamber are defined by movably supporting an input piston and a pressure piston in a cylinder. A high-pressure supply pipe of an accumulator is coupled to wheel cylinders via hydraulic supply pipes, and coupled to the rear pressure chamber via a hydraulic supply pipe and a second hydraulic pipe. Pressure booster valves and pressure reducing valves are attached to the hydraulic pressure supply pipes, respectively. The wheel cylinder is coupled to the front pressure chamber via the first hydraulic pipe, and a coupling pipe for coupling a first hydraulic pipe and the hydraulic supply pipe is provided with the switching valve. | 08-26-2010 |
20100230023 | APPARATUS FOR CONTROLLING TIRE INFLATION PRESSURE - An apparatus for controlling tire inflation pressure includes an outlet side end portion of a supplying passageway opened on an outer circumference of a column-shaped boss portion provided in an axle, and an inlet side end portion of an introducing passageway that is opened on an inner circumference of an annular hub portion provided in a wheel. A wheel is mounted onto the axle. The inner circumference of the annular hub portion is engaged with the outer circumference of the column-shaped boss portion, and thereby the outlet side end portion and the inlet side end portion are communicatively connected to each other air tightly. Thus, easiness in mounting a vehicle wheel assembly relative to the axle can be improved. | 09-16-2010 |
20100283315 | VEHICLE BRAKING APPARTATUS - In a vehicle braking apparatus, a pressure control valve is controlled according to a brake operation amount of a brake pedal to thereby regulate hydraulic pressure and supply it to wheel cylinders. By controlling the pressure control valve by using hydraulic pressure output from a master cylinder as pilot pressure, the hydraulic pressure can be regulated and supplied to the wheel cylinders. A master cut valve capable of opening and closing a first hydraulic pipe that supplies the hydraulic pressure from the master cylinder to the wheel cylinders is provided. An external pressure supply pipe that supplies the pilot pressure to the pressure control valve is connected to the first hydraulic pipe on a side of the master cut valve closer to the wheel cylinders. | 11-11-2010 |
20110162918 | DISC BRAKE DEVICE - In a disc brake device, a piston is movably supported to a cylinder portion of a caliper, friction pads are operable to push a disc rotor as the piston moving frontward during pressurization, a seal mechanism arranged at the cylinder portion is operable to return the piston to an initial position during depressurization, and the seal mechanism is constituted with a movable element arranged between the cylinder portion and the piston ( | 07-07-2011 |
20120085605 | FRICTION COUPLE - A friction couple including a frictionally rubbing member that contains at least one of a binder and a filler, in which the binder and the filler have a modulus of elasticity of 1 GPa or higher and 15 GPa or lower, no softening point or no glass transition point in the range of −50° C. or higher and 200° C. or lower, and a compressive strength of 50 MPa or higher at 25° C. and 25 MPa or higher at 200° C.; and a frictionally rubbed member. The ratio of the maximum value tan δ(Max) to the minimum value tan δ(Min) of the loss tangent tan δ of the frictionally rubbing member obtained through a dynamic viscoelastic measurement performed at a frequency of 0.1 Hz or higher and 20 Hz or lower and in the range of −50° C. or higher and 250° C. or lower after thermoforming is 5 or less. | 04-12-2012 |