Patent application number | Description | Published |
20100163353 | FRICTION COUPLE - A friction couple including: a first friction member that contains a metallic material and includes a first friction surface; and a second friction member that includes a second friction surface that contacts the first friction surface and that contains an oxidation film developer that accelerates formation of an oxidation film on at least one of the first friction surface and the second friction surface by oxidizing the metallic material when the first friction surface and the second friction surface contact each other. | 07-01-2010 |
20100174010 | FRICTION MATERIAL AND PRODUCTION METHOD OF FRICTION MATERIAL - A friction material including: an amorphous resin that has a chain-like polymer structure; and other components that constitute the friction material and that are components other than the amorphous resin, wherein dispersion treatment is preliminarily carried out in which the amorphous resin is dispersed in at least one of the other components, and a manufacturing method of the friction material. | 07-08-2010 |
20100326073 | 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. | 12-30-2010 |
20110179885 | OPERATION AMOUNT DETECTING APPARATUS - In an operation amount detecting apparatus, a brake pedal ( | 07-28-2011 |
20110198162 | BRAKE DEVICE - A brake device includes a pad | 08-18-2011 |
20110239752 | TIRE FORCE DETECTION APPARATUS - A tire force detection apparatus estimates the force exerted on a tire at the contact point of the tire in a vehicle that includes: a tire/wheel assembly having a wheel and a tire held on an outer circumferential portion of the wheel; and a wheel support member that rotatably supports the wheel via a wheel support portion. The tire force detection apparatus includes: an elastic body disposed between the wheel and the wheel support portion, the elastic body having column portions that each abut, at opposite ends thereof, the wheel and the wheel support portion and a plate-shaped portion that is integrated with the column portions and extends around the column portions; stress detectors that detect stress applied to the elastic body by detecting a strain of the plate-shaped portion; and an electronic circuit device that calculates the force exerted on the tire, based on the stress detected. | 10-06-2011 |
20110275547 | METHOD FOR MANUFACTURING FRICTION MATERIAL, FRICTION MATERIAL AND BRAKING DEVICE - A plurality of hard particles | 11-10-2011 |
20110278104 | DISC BRAKE DEVICE - A disc brake device is configured to include friction pads facing the friction surface of a disc rotor, a caliper and a piston capable of pushing the friction pads against the friction surface of the disc rotor, and a mounting for supporting the caliper in a freely movable manner to a vehicle body side through a slide mechanism including a slide pin and a sleeve. A positioning mechanism capable of changing a relative position of the slide pin and the sleeve is arranged to appropriately change the position of the caliper according to the wear of the pad and ensure stable retract function. | 11-17-2011 |
20110281962 | FRICTION MATERIAL AND PRODUCTION METHOD OF FRICTION MATERIAL - A friction material including: an amorphous resin that has a chain-like polymer structure; and other components that constitute the friction material and that are components other than the amorphous resin, wherein dispersion treatment is preliminarily carried out in which the amorphous resin is dispersed in at least one of the other components, and a manufacturing method of the friction material. | 11-17-2011 |
20120000737 | BRAKING SYSTEM - Provided is a braking system which can enhance the power generation efficiency of a thermoelectric conversion element by efficiently recovering the heat generated during braking, or by increasing the temperature difference between a heat source and the thermoelectric conversion element. A brake pad body in a brake pad is provided with a thermoelectric conversion element. The thermoelectric conversion element includes an n-type semiconductor layer and a p-type semiconductor layer. The n-type semiconductor layer and the p-type semiconductor layer are provided in a recess formed in the back surface of the brake pad body. | 01-05-2012 |
20120037465 | BRAKING DEVICE AND METHOD FOR MANUFACTURING FRICTION MATERIAL - A braking device is provided with a pad having hard particles on a wavelike friction surface, and a disc having a hard layer on a wavelike friction surface which slides on the wavelike friction surface. The wavelike friction surface has a groove portion in a direction in which the wavelike friction surfaces slide on each other, and the wavelike friction surface has a protruding portion which abuts on the groove. Therefore, the actual contact area between the friction surfaces having the hard members is increased, and a higher frictional force can be obtained without sacrificing wear resistance. | 02-16-2012 |
20120073914 | BRAKE SYSTEM AND METHOD FOR PRODUCING FRICTION MATERIAL - A brake system includes a pad having a frictional surface, and a disc having a frictional surface sliding on the frictional surface. The frictional surface includes hard particles supported elastically and a plurality of protrusions arranged along a direction in which the frictional surface slides on the frictional surface, and when the frictional surface slides on the frictional surface, particles abut respective protrusions continuously while being displaced in the direction perpendicular to the frictional surface. Thus, wear resistance can be improved Since only the vicinities of the peaks of the hard particles and the vicinities of the peaks of the protrusions abut, the hard particles do not follow irregularities of the frictional surface, and thereby the hard particles and the protrusions repeat point contact. Thus, since the distance between the hard particles and the protrusions is stabilized and the adhesion frictional force is stabilized, a stable frictional force can be obtained. | 03-29-2012 |
20120144822 | CYLINDER DEVICE - A cylinder device is characterized in: that it selectively realizes an operation-force dependent pressurizing state where brake fluid is pressurized by operation force and a high-pressure-source-pressure dependent pressurizing state where brake fluid is pressurized depending on a pressure from a high-pressure-source device; that there are defined an inter-piston chamber in front of an input piston by an insertion of the input piston into a pressurizing piston, an input chamber in the back of a flange of the pressurizing piston at the pressure from the high pressure source device, and an opposing chamber in front of the flange; and that the cylinder device has a mechanism elastically pressurizing an reaction force chamber formed by a communication between the inter-piston and the opposing chambers, and a mechanism switching communication/not-communication state between the reaction chamber and a reservoir. | 06-14-2012 |
20120160619 | FLUID-PRESSURE BRAKE SYSTEM - A hydraulic brake system includes a braking state switching device which selectively realizes: a high-pressure-source-pressure dependent braking state in which a brake force is generated with a magnitude that depends on a pressure of brake fluid supplied from a high-pressure-source device; and an operation-force/high-pressure-source-pressure dependent braking state in which a brake force can be generated with a magnitude that depends on both of the pressure of the brake fluid supplied from the high-pressure-source device and a brake operation force of a driver which is applied to a brake operating member and that is larger than the magnitude of a brake force which can be generated in the high-pressure-source-pressure dependent braking state. The brake system may be equipped with a high-pressure-source device having a relatively small capacity, thereby allowing the high-pressure-source device to be compact and low-cost. | 06-28-2012 |
20120194142 | POWER GENERATING DEVICE AND BRAKING DEVICE - Power generation efficiency is improved with a simple configuration. A braking device is provided with a brake rotor which rotates on a central axis, and friction portions which are in frictional contact with the brake rotor. A coil is wound around the outer peripheral portion of the brake rotor. A friction portion has the north pole of a magnet, and a friction portion has the south pole of a magnet. The braking device generates electricity by using an electromagnetic induction phenomenon and an electrostatic phenomenon that are caused by the interaction between the outer peripheral portion and the friction portion, for example, at the time of braking. As a result, the configuration can be simplified and the amount of power generation is not likely to be limited by a motor capability because there is very little need to use the motor as a generator. Furthermore, the friction energy itself converted from the kinetic energy of the brake rotor can be converted into electrical energy to suppress the friction energy from being lost as heat energy. | 08-02-2012 |
20120240717 | PIVOT-ARM TYPE MANIPULATOR DEVICE - Disclosed is a pivot-arm type manipulator device, comprising an arm member that pivots about an axis by being manipulated, and a friction contact unit that generates friction force as the arm member pivots. At least one of the following differs between a first region of a small degree of manipulation vis-à-vis the arm member and a second region of the degree of manipulation vis-à-vis the arm member that is greater than the degree of manipulation of the first region: the friction coefficient between two members that configure the friction contact unit, the pressing load that acts between the two members that configure the friction contact unit, or the distance in the radial direction between the axis and the friction contact unit. The resistance torque that is applied to the arm member about the axis by friction force accordingly varies with the degree of manipulation vis-à-vis the arm member. | 09-27-2012 |
20120255372 | OPERATION AMOUNT DETECTION APPARATUS - An operation amount detection apparatus includes a transmission member that transmits a load corresponding to an operation amount between a shaft portion and an operation target member through connecting portions that connect a first support portion supported by the operation target member and a second support portion supported by the shaft portion, and a detection device that detects an operation amount based on an amount of deformation of the connecting portions. A plurality of the connecting portions are provided in parallel between the first support portion and the second support portion, and deflect due to transmission of a load so that the first support portion and the second support are relatively displaced in a direction of a linear motion. The respective connecting portions are mutually opposed in a direction perpendicular to a lengthwise direction of the shaft portion. | 10-11-2012 |
20120324883 | MASTER CYLINDER DEVICE - A master cylinder device includes: a first pressurizing piston including a main body portion which defines a first pressurizing chamber for pressurizing a brake fluid, and a flange portion which is formed around an outer circumference of the main body portion and in front of which there is defined an opposing chamber; and an input piston which can be shrunk by operating a brake pedal. The master cylinder device further includes an electromagnetic open/close valve for making the opposing chamber and the inter-piston chamber communicate with a reservoir, and an electromagnetic open/close valve for prohibiting the shrink of the input piston. The master cylinder device with such a structure allows a pressurization of the brake fluid depending on an operation force in a state in which the shrink of the input piston is prohibited. | 12-27-2012 |
20130020154 | BRAKE DEVICE, FRICTION COUPLE FOR BRAKE DEVICE, AND BRAKE PAD - A brake device includes a first member having holders, each of the holder configured to be in contact with a corresponding rolling body and hold the rolling body rotatably; a second member provided in contact with the rolling body and configured to rotate the rolling body in the holder according to a relative displacement with the first member; and a pressing mechanism configured to press the first member and the second member against each other. This makes it possible appropriately to set performance regardless of, for example, a projecting area of a surface of the first member, the surface being pressed by the second member. | 01-24-2013 |
20130068572 | DISK BRAKE DEVICE - A cylinder portion ( | 03-21-2013 |
20130105254 | ELECTRIC BRAKE APPARATUS FOR VEHICLE | 05-02-2013 |
20130167664 | PEDAL OPERATION AMOUNT DETECTING DEVICE - A pedal operation amount detecting device that is provided in an operating pedal apparatus including a transmitting member having a pedal arm of an operating pedal that is arranged so as to be pivotable about a support axis and that is depressed, and an output member to which a depression force is transmitted from the transmitting member and to which a reaction force corresponding to the depression force is applied, the pedal operation amount detecting device including a sensor member that is arranged on a load transmission path at a position offset from the transmitting member in a direction parallel to the support axis and that is deformed by the depression force and the reaction force, and the pedal operation amount detecting device electrically detecting a deformation of the sensor member. | 07-04-2013 |
20130269338 | MASTER CYLINDER DEVICE AND HYDRAULIC BRAKE SYSTEM USING THE SAME - A master cylinder device includes a housing whose front side end is closed and which includes a third housing member separating an interior of the housing into a front side chamber and a rear side chamber and having an opening through the third housing member, a first pressurizing piston which includes a main body portion disposed in the front side chamber and which is moved forward by receiving a force for pressurizing the brake fluid to be supplied to a brake devices, and an input piston. In the master cylinder device, an input chamber into which a brake fluid is introduced is defined between a rear end of the main body portion of the first pressurizing piston and the third housing member. The input piston is fitted in the housing with seals, whereby, an inter-piston chamber across which the input piston and the pressure receiving piston face to each other. | 10-17-2013 |
20130318964 | MASTER CYLINDER DEVICE AND HYDRAULIC BRAKE SYSTEM USING THE SAME - A housing of a master cylinder device includes a housing member separating an interior of the housing into a front and a rear side chambers and having an opening through the housing member. A pressurizing piston includes a main body portion disposed in the front side chamber and is moved forward by a force for pressurizing the brake fluid. An input piston can move forward by an operation force. An input chamber into which a brake fluid from a high pressure source device is introduced is defined between a rear end of the main body portion of the pressurizing piston and the housing member. The input piston is fitted in the housing with seals, whereby, the input piston and the pressure receiving piston face to each other through the opening, though the input piston and the pressure receiving piston are not fitted to each other with any seal. | 12-05-2013 |
20140116815 | DISK BRAKE DEVICE AND CALIPER SLIDE MECHANISM - A disc brake device includes: a disc rotor rotating around a rotational axial line; a friction pad facing a friction surface of the disc rotor; a caliper capable of pressing the friction pad to the friction surface of the disc rotor; a mounting provided with the caliper; and a caliper slide mechanism supporting the caliper on the mounting in a manner enabling slide movement via a slide pin inserted in a guide section provided in a hole section of the caliper or the mounting, in which the caliper slide mechanism has a variable mechanism making a permissible swing angle of the slide pin with respect to a slide movement direction variable in response to a braking action along with slide movement of the caliper. Accordingly, the disc brake device and the caliper slide mechanism can provide an effect of reducing noises. | 05-01-2014 |
20140159471 | 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. | 06-12-2014 |
20140159472 | 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. | 06-12-2014 |
20140345271 | HYDRAULIC BRAKE SYSTEM - A hydraulic brake system for braking a vehicle, including a master cylinder device having a fluid-flow permission mechanism that permits a flow of a working fluid between an inter-piston chamber and a low-pressure source, wherein, when a pressure of the working fluid to be supplied to a brake device exceeds a set pressure upon advancing in association with an advancing movement of a brake operation member, a closing and opening mechanism for hermetically closing the inter-piston chamber and opening an opposing chamber to the low-pressure source is controlled so as to hermetically close the inter-piston chamber, while, when the pressure of the working fluid becomes lower than a set pressure upon retracting in association with a retracting movement of the brake operation member, the fluid-flow permission mechanism is controlled so as to permit the flow of the working fluid between the inter-piston chamber and the low-pressure source. | 11-27-2014 |
20150060215 | FRICTION BRAKE DEVICE - A friction brake device has a brake rotor which rotates around a rotation axis, brake pads as rotating friction members which rotate around an autorotation axis parallel to the rotation axis, rotational torque transmission devices which mutually transmit rotational torques between the brake rotor and the brake pads without depending on the friction force between the brake rotor and the brake pads, and pressing devices which press the brake pads against the brake rotor. The pressing devices press the brake pads against the brake rotor by way of non-rotating friction members which are supported so as not to rotate around the autorotation axis. | 03-05-2015 |
20150075921 | FRICTION BRAKE DEVICE - A friction brake device having: friction members which are pressed against a pair of friction surfaces that are rotatable around a rotation axis and opposed to each other; a force increasing mechanism which transmits rotational torque between the friction members, transforms the rotational torque to the force separating the friction members along the rotation axis through a wedge action, and thereby increasing the pressing force; a pressing force control mechanism which controls a force with which at least one of the friction members is pressed against the associated friction surface; and a normal position-recovering mechanism which returns the friction members to their normal positions when the force controlled by the pressing force control mechanism is 0. | 03-19-2015 |