Abstract: [Summary] To provide a brake system in which due to change in structure of a seat member, an end portion of a push rod that faces a piston can be increased in diameter and thus weight reduction of entire construction of the piston and suppression of vibration hitting noises are obtained.

Abstract: [Summary] To provide a brake system in which due to change in structure of a seat member, an end portion of a push rod that faces a piston can be increased in diameter and thus weight reduction of entire construction of the piston and suppression of vibration hitting noises are obtained.

Abstract: A brake apparatus including a housing, a piston body disposed within each of a pair of closed-ended bores formed in the housing, a first elastic member that biases the piston body toward a closed end of the respective bores, a fluid passage opened to the closed end of the respective bores, a pressure regulating valve disposed in the fluid passage, and a rotary gear pump disposed in a region between the pressure regulating valve disposed in the fluid passage opened to the closed end of one of the bores and the pressure regulating valve disposed in the fluid passage opened to the closed end of the other of the bores. The fluid passages are formed to be offset from respective central axes of the piston bodies in such a direction that the fluid passages are spaced apart from each other.

Abstract: A brake apparatus including a piston body disposed in a closed-ended bore in a housing, a first elastic member biasing the piston body toward a closed end of the bore, and a pressure regulating valve including a valve element, a rod and a second elastic member biasing the valve element toward a seat portion and having an elastic force smaller than that of the first elastic member, the brake apparatus having a reservoir function of reserving brake fluid flowed from a vehicular wheel cylinder in the bore by strokes of the piston body upon ABS control, the piston body being a resin-molded member having a hard member on a piston crown surface, the hard member having a hardness larger than that of a resin material of the piston body, and the piston body and the rod are brought into contact with each other via the hard member.

Abstract: A brake apparatus including a housing, a piston body disposed within each of a pair of closed-ended bores formed in the housing, a first elastic member that biases the piston body toward a closed end of the respective bores, a fluid passage opened to the closed end of the respective bores, a pressure regulating valve disposed in the fluid passage, and a rotary gear pump disposed in a region between the pressure regulating valve disposed in the fluid passage opened to the closed end of one of the bores and the pressure regulating valve disposed in the fluid passage opened to the closed end of the other of the bores. The fluid passages are formed to be offset from respective central axes of the piston bodies in such a direction that the fluid passages are spaced apart from each other.

Abstract: A brake apparatus including a piston body disposed in a closed-ended bore in a housing, a first elastic member biasing the piston body toward a closed end of the bore, and a pressure regulating valve including a valve element, a rod and a second elastic member biasing the valve element toward a seat portion and having an elastic force smaller than that of the first elastic member, the brake apparatus having a reservoir function of reserving brake fluid flowed from a vehicular wheel cylinder in the bore by strokes of the piston body upon ABS control, the piston body being a resin-molded member having a hard member on a piston crown surface, the hard member having a hardness larger than that of a resin material of the piston body, and the piston body and the rod are brought into contact with each other via the hard member.

Abstract: In a gear pump equipped with a pump assembly formed from a driving gear supported by a driving shaft, a driven gear supported by a driven shaft, a pair of side plates disposed at both sides in an axial direction of driving and driven shafts, and a seal block that seals tips of the gears and forms a first fluid chamber by installation onto the side plates, and a casing that houses the pump assembly and forms a second fluid chamber therein, ribs are provided for at least one member of the side plates or the seal block, and fluid tightness between the first and second fluid chambers is secured by exerting pressure between the side plates and seal block and additionally plastically deforming the ribs. By this, it is possible to provide the gear pump which is capable of achieving improvement of the seal integrity while reducing the parts count.

Abstract: A hydraulic apparatus includes a fluid pressure control unit which includes: a housing unit enclosing a pump, a motor fixed to a first side surface of the housing unit; a control section provided on a second side surface of the housing unit and arranged to control the motor; and a physical quantity sensor fixed to the control section. There are further provided a plurality of mount portions to support the housing unit to a vehicle body elastically. The physical quantity sensor is located between the mount portions.

Abstract: In a gear pump equipped with a pump assembly formed from a driving gear supported by a driving shaft, a driven gear supported by a driven shaft, a pair of side plates disposed at both sides in an axial direction of driving and driven shafts, and a seal block that seals tips of the gears and forms a first fluid chamber by installation onto the side plates, and a casing that houses the pump assembly and forms a second fluid chamber therein, ribs are provided for at least one member of the side plates or the seal block, and fluid tightness between the first and second fluid chambers is secured by exerting pressure between the side plates and seal block and additionally plastically deforming the ribs. By this, it is possible to provide the gear pump which is capable of achieving improvement of the seal integrity while reducing the parts count.