Abstract: An embodiment discloses a vehicle disc brake including a caliper body, a banjo and a banjo bolt. An acting portion of the caliper body has a cylinder bore accommodating a piston. The caliper body is formed through a gravity casting method. A gate mark is formed on the bottom wall of the cylinder bore as a result of cutting the gate after the caliper body has been cast, and the gate mark includes a worked surface and a projecting surface. A union hole communicating with a hydraulic pressure chamber and a locking hole receiving the locking projection of a banjo are opened in the worked surface. And, an uneven portion is provided between the worked surface and the projecting surface.

Abstract: A brake fluid pressure control device for a includes a wheel speed acquisition device that acquires a wheel speed, a slippage amount calculation device that calculates a wheel slippage amount, and a bad road determination device that determines whether a road surface of travel is a bad road. The bad road determination device determines whether the road surface of travel is a bad road using a bad road determination threshold value, and a value that relates to wheel behavior that is calculated based at least upon the wheel speed. The bad road determination threshold value is modified according to the wheel slippage amount. The present invention can appropriately set a bad road determination threshold value that is in accordance with a slippage amount, which corresponds to braking power, and can improve bad road determination precision without depending on variation in change of wheel speed.

Abstract: One embodiment provides a vehicle brake apparatus, including: an electric actuator; and a drum brake. The drum brake is attached to a wheel so as to be driven by power exhibited by the electric actuator. In a state of being mounted on a vehicle, the electric actuator is disposed and fixed further rearwards than an axle of the wheel.

Abstract: A method for producing a rubber composition include a mixing step, a drying step, and a dispersion step. In the mixing step, an aqueous solution that includes at least one of oxycellulose fibers and cellulose nanofibers is mixed with rubber latex to obtain a first mixture. In the drying step, the first mixture is dried to obtain a second mixture. In the dispersion step, the second mixture is tight-milled using an open roll to obtain a rubber composition. The rubber composition does not include an aggregate that includes at least one of the oxycellulose fibers and the cellulose nanofibers, and has a diameter of 0.1 mm or more.

Abstract: A carbon fiber composite material of the present invention includes: cell structures with an elastomer surrounded by a first carbon nanofiber and an interface phase thereof; cell structure assemblies as assemblies of more than one of the cell structures; and tie structures that join the cell structure assemblies to each other. The tie structures are formed by one or more first carbon nanofibers, one or more second carbon nanofibers, and the elastomer interface phase surrounding the one or more first carbon nanofibers and the one or more second carbon nanofibers.

Abstract: Cup seals are fitted to a cylinder hole of a hydraulic pressure master cylinder. A plunger is movably inserted into the cylinder hole via the cup seals. A fluid chamber is formed on an outer circumferential side of the cylinder hole and between the cup seals so as to communicate with a fluid storage chamber through a fluid communication hole. The plunger is formed in a cylindrical shape having a bottom and provided with a recess portion opening toward a bottom portion of the cylinder hole. A hydraulic pressure chamber is defined between the recess portion and the bottom portion. Plural communication ports are formed in a circumferential wall of the recess portion, to penetrate the circumferential wall. When the plunger is in an initial position and is in a non-operating state, the communication ports connect the hydraulic pressure chamber and the fluid chamber.

Abstract: One embodiment provides a vehicle disc brake including: a caliper body; a caliper bracket having a pair of caliper support arms; a pair of friction pads; and a pad return spring. Each caliper support arm has a pair of pad guide grooves, and a pair of lug pieces extending from the friction pad are supported movably therein. An outer surface of each lug piece is stepped such that a projecting length on a radially outer side is shorter than a projecting length on a radially inner side, thereby defining a space portion between the lug piece and the pad guide groove. A first imaginary line, which is defined to pass a gravity center of the friction pad and to intersect perpendicularly a center line connecting a center of a disc rotor and a center of a piston, passes the space.

Abstract: A method for producing a rubber composition include a mixing step, a drying step, and a dispersion step. In the mixing step, an aqueous solution that includes at least one of oxycellulose fibers and cellulose nanofibers is mixed with rubber latex to obtain a first mixture. In the drying step, the first mixture is dried to obtain a second mixture. In the dispersion step, the second mixture is tight-milled using an open roll to obtain a rubber composition. The rubber composition does not include an aggregate that includes at least one of the oxycellulose fibers and the cellulose nanofibers, and has a diameter of 0.1 mm or more.

Abstract: A piston has a piston main body including an aluminum alloy, and a covering layer formed on the outer surface of the piston main body, and the covering layer has a first plating layer including an iron-phosphorous alloy, and a second plating layer including a nickel-phosphorous alloy formed on the first plating layer.

Abstract: The present invention is a vehicle disc brake for which incorrect installation of a friction pad can be prevented with a simple structure. The disc brake is provided with incorrect installation-preventing parts with which, if a friction pad (4) is installed with an incorrect installation orientation when a pair of tabs (10, 11) provided on the disc entry-side and disc exit-side of the back plate (4d) of a friction pad (4) is installed into pad guide grooves (9) formed on a caliper body (3), the tabs bump into the caliper body (3) and prevent the incorrect installation. The incorrect installation-preventing parts are formed from caliper-side recesses (9d, 9e), which are formed in the pad guide grooves (9) towards the center of the caliper body, and tab-side protrusions (10a, 11a), which have shapes that correspond to the caliper-side recesses (9d, 9e).

Abstract: A motor pump includes a base body, a pump, and a motor. The motor includes a tubular yoke having a bottom and an opening on a base body side, a bearing, a rotation shaft, a rotor, a commutator, a brush and a brush shaft. The bearing is fitted to an inside of a bearing hole of the base body. The brush holder is fitted to an inside of the yoke and engages with an outer peripheral surface of the bearing. The brush holder and the bearing are disposed so as to be spaced from the base body in an axial direction of the rotation shaft. The motor-side seal member is provided between the yoke and the base body. The base body constitutes a stopper that prevents the brush holder from being extracted from the yoke.

Abstract: A disk brake includes a retainer part of a pad retainer provided with an outside section, back section, and inside section. A pad rebounding section is formed by inclining the leading end of a strip, which extends in the disk rotor direction from the end of the inside section away from the disk rotor with an elastic loop section therebetween, toward the outside in the radial direction of the disk. During travel, a gap is formed between the inside section and the strip of the pad rebounding section, and when a lug piece moves inward, the pad rebounding section and the inside section come into contact with each other, the inside section is pressed against an inside surface in the radial direction of the disk, the back section is elastically deformed, and the elastically deformed back section presses the lug piece toward the center side of a caliper body.

Abstract: A method for producing a rubber composition include a mixing step, a drying step, and a dispersion step. In the mixing step, an aqueous solution that includes at least one of oxycellulose fibers and cellulose nanofibers is mixed with rubber latex to obtain a first mixture. In the drying step, the first mixture is dried to obtain a second mixture. In the dispersion step, the second mixture is tight-milled using an open roll to obtain a rubber composition. The rubber composition does not include an aggregate that includes at least one of the oxycellulose fibers and the cellulose nanofibers, and has a diameter of 0.1 mm or more.

Abstract: In one embodiment of the invention, a recess portion is formed at an outer end portion of the upper surface of the arm member connecting portion, one end of the recess portion communicates with the counterbored portion, and the other end of the recess portion is opened to an exterior of the arm connecting member.

Abstract: A mount structure includes a mount member, and a bracket member. An upper surface of the bracket member, which is connected to a lower portion of a fuel cell stack, includes an upper surface cut formed by cutting the bracket member in a depth direction, and the upper surface cut extends in a surface direction. A lower surface of the bracket member, which is opposite to the upper surface, includes a lower surface cut formed by cutting the bracket member in the depth direction, and the lower surface cut extends in the surface direction.

Abstract: A vehicle rear wheel lift tendency judgment device: includes a first deceleration obtaining device for obtaining a first deceleration along a first straight line, being a component in a first direction of an acceleration on a center of gravity, and a second deceleration obtaining device for obtaining a second deceleration along a second straight line, being a component in a second direction of the acceleration; judges that a rear wheel tends to be lifted, when the first deceleration is greater in the first direction than a first threshold, or when the second deceleration is greater in the second direction than a second threshold; and performs at least one of setting for shifting the first threshold in a direction opposite to the first direction and setting for shifting the second threshold in a direction opposite to the second direction, when a second-deceleration change rate being a change amount in the second deceleration per unit time becomes greater in the second direction than a change-rate threshold, en

Abstract: A connection structure for electrical component assembly including: an electrical component assembly provided with a coil energized through a pair of electrically conductive members; and a housing that covers the electrical component assembly and that is provided with housing-side connection terminals. The electrically conductive member has a connection terminal section connectable to the housing-side connection terminal. The connection terminal section is bent toward a side departing from the coil so as to protrude toward a side of the electrical component assembly, and one of the connection terminal sections is arranged at a position deviated in an axis direction of the coil relative to the other of the connection terminal sections.

Abstract: One embodiment of the present invention provides a caliper body including an acting portion having a cylinder bore; a union boss portion having a union hole; and a bleeder boss portion having a bleeder hole. The union boss portion is formed at a central portion of a side surface of the acting portion in a circumferential direction of a disc brake rotor, the side surface being opposite to a side surface facing the disc brake rotor. The bleeder boss portion extends from an outer circumferential side of the bottom wall of the cylinder bore to the union boss portion. The union boss portion and the bleeder boss portion form a continuous projecting portion such that the union boss portion projects further outwards than the bleeder boss portion.

Abstract: An oilfield apparatus includes a seal member. The seal member is formed of a rubber composition that includes a rubber, and at least either oxycellulose fibers or cellulose nanofibers that are dispersed in the rubber in an untangled state, and does not include an aggregate that includes at least either the oxycellulose fibers or the cellulose nanofibers and has a diameter of 0.1 mm or more. The rubber composition includes at least either the oxycellulose fibers or the cellulose nanofibers in a ratio of 1 to 60 parts by mass based on 100 parts by mass of the rubber. The oxycellulose fibers have an average fiber diameter of 10 to 30 micrometers. The cellulose nanofibers have an average fiber diameter of 1 to 200 nm.

Abstract: A valve system of a braking device provided with a stroke simulator that is connected via a connection passage with a pipe for making a master cylinder communicate with a wheel cylinder; and a third shut-off valve that is a solenoid valve and performs opening and closing of a communication between the master cylinder and the stroke simulator, wherein the third shut-off valve is a normally closed valve; and the valve system opens the third shut-off valve by applying a start-up voltage, thereafter keeps the open state of the third shut-off valve by alternately applying a holding voltage that is lower than the start-up voltage and the start-up voltage, in order to prevent heat generated in the valve from becoming excessively high even while keeping the open state of the valve.