Abstract: The present invention pertains to a hydraulic braking device which is provided with: a housing; a pump disposed within the housing; a motor that drives the pump; a plurality of solenoid valves disposed within the housing; WC ports that are provided to the housing and connected to wheel cylinders; and flow channels provided within the housing to connect between the pump, the solenoid valves and the WC ports, and in which the motor and the solenoid valves are controlled such that fluid pressure is generated in the wheel cylinders. The hydraulic braking device is further provided with a Helmholtz damper that is disposed within the housing to be connected to the flow channels and reduces pulses generated by the driving of the pump.

Abstract: A housing projection is formed at a bottom of a second reservoir hole in a housing. According to this, a tip side in a press-fitting direction of a sleeve tends to deform inwardly in a radial direction and escape from the housing in a process of press-fitting the sleeve 88 into the second reservoir hole, since an inner slant part of the tip side of the sleeve contacts to a contacting surface of the housing projection, deformation of the tip side of the sleeve 88 is suppressed.

Abstract: A hydraulic unit for a vehicle brake apparatus having a master cylinder and a wheel cylinder includes a housing formed with a pipe line connecting between the master cylinder and the wheel cylinder, a pump disposed in the housing for sucking and discharging a brake fluid to boost pressure of the brake fluid, and a reservoir piston disposed in a hole formed in the housing so as to be movable slidably back and forth, the reservoir piston partitioning a reservoir chamber within the hole for temporarily storing the brake fluid discharged from the wheel cylinder. The hydraulic unit further includes a cover disposed in the hole to close one end on an atmospheric side of the hole, the cover being formed with a fluid reservoir chamber for storing the brake fluid leaking from the pump.

Abstract: A brake fluid pressure controlling actuator is equipped with a block, an electric device secured to the block, and a casing attached to the block, and a board support with a stay. The brake fluid pressure controlling actuator is designed to have the board support disposed in the casing and also have a circuit board placed in contact with the stay of the board support. The stay of the board support serves to firmly hold a portion of the circuit board around a through-hole formed in the circuit board when a terminal of an electric device is press-fitted into the through-hole, thereby minimizing the degree of bending of the circuit board to ensure the stability in electrically connecting the electric device to the circuit board.

Abstract: An actuator for brake fluid pressure control includes a block formed with a brake pipe, an electric component provided on a surface of the block, a circuit board formed with an electric circuit for driving the electric component, and a case that houses the circuit board and includes a first open part in which the electric component is accommodated, the case having a top surface opposite the surface of the block across the circuit board and being fixed to the block at the side opposite to the top surface. An insertion hole is formed in a side surface of the case at a position corresponding to a plane position of the circuit board. The insertion hole is sized to enable inserting the circuit board into the case therethrough to be fixed to the case.

Abstract: A hydraulic unit for a vehicle brake apparatus having a master cylinder and a wheel cylinder includes a housing formed with a pipe line connecting between the master cylinder and the wheel cylinder, a pump disposed in the housing for sucking and discharging a brake fluid to boost pressure of the brake fluid, and a reservoir piston disposed in a hole formed in the housing so as to be movable slidably back and forth, the reservoir piston partitioning a reservoir chamber within the hole for temporarily storing the brake fluid discharged from the wheel cylinder. The hydraulic unit further includes a cover disposed in the hole to close one end on an atmospheric side of the hole, the cover being formed with a fluid reservoir chamber for storing the brake fluid leaking from the pump.

Abstract: A brake fluid pressure controlling actuator is equipped with a block, an electric device secured to the block, and a casing attached to the block, and a board support with a stay. The brake fluid pressure controlling actuator is designed to have the board support disposed in the casing and also have a circuit board placed in contact with the stay of the board support. The stay of the board support serves to firmly hold a portion of the circuit board around a through-hole formed in the circuit board when a terminal of an electric device is press-fitted into the through-hole, thereby minimizing the degree of bending of the circuit board to ensure the stability in electrically connecting the electric device to the circuit board.

Abstract: When a first and a second reservoirs are disposed at positions below a central axis of pumps and are offset from a center portion in a lateral direction of a housing when viewed from a front surface side, outer peripheral sides of a first and a second reservoir usually become dead spaces. Therefore, first and second wheel pressure sensors are disposed in the dead spaces.

Abstract: An actuator for brake fluid pressure control includes a block formed with a brake pipe, an electric component provided on a surface of the block, a circuit board formed with an electric circuit for driving the electric component, and a case that houses the circuit board and includes a first open part in which the electric component is accommodated, the case having a top surface opposite the surface of the block across the circuit board and being fixed to the block at the side opposite to the top surface. An insertion hole is formed in a side surface of the case at a position corresponding to a plane position of the circuit board. The insertion hole is sized to enable inserting the circuit board into the case therethrough to be fixed to the case.

Abstract: A seal part that separates a first conduit line and a second conduit line is formed by contact between a peripheral surface of a pressure regulating valve and an inner wall surface of a housing. By forming a conduit line connected to a reservoir chamber among the second conduit line B is formed by the peripheral surface of the pressure regulating valve and the inner wall surface of the housing in a side of the reservoir chamber opposite to the seal part among the peripheral surface of the pressure regulating valve, the conduit line and the seal part do not overlap in a radial direction of the pressure regulating valve, thus the second conduit line can be disposed closer to the pressure regulating valve.

Abstract: A housing projection is formed at a bottom of a second reservoir hole in a housing. According to this, a tip side in a press-fitting direction of a sleeve tends to deform inwardly in a radial direction and escape from the housing in a process of press-fitting the sleeve 88 into the second reservoir hole, since an inner slant part of the tip side of the sleeve contacts to a contacting surface of the housing projection, deformation of the tip side of the sleeve 88 is suppressed.

Abstract: The motor apparatus includes a motor and a housing to which the motor is fixed. The motor includes a yoke having a bottomed-cylindrical shape, a flange being protruded from the opening end of the yoke towards an anti-bottom end side of the yoke. The housing includes a yoke-mounted surface, to which the opening end of the yoke comes into contact and a flange-mounted surface, to which the flange comes into contact. Further, the motor apparatus includes a rigid coupling portion that rigidly couples the housing to the motor and prevents the housing and the motor from relatively moving in the axial direction.

Abstract: A sealing arrangement includes a first member having a non-circular hole, a second member having a non-circular and annular groove that extends continuously around an outer circumference of the second member, and a seal made of an elastic material and seated in the groove. An outer circumference of a body of the seal is in contact with a wall of the first member defining the non-circular hole, and an inner circumference of the body of the seal is in contact with a wall of the second member defining the groove. At least one protrusion protrudes from at least one portion of the body where a relatively low contact pressure is applied between the body and the groove and along a direction of insertion of the second member into the first member.

Abstract: The brake actuator includes a housing, a differential pressure control valve, pressure increase control valves, a reservoir, pressure decrease control valves, a pump, an intake system pipeline, and a check valve. The differential pressure control valve is provided in a main pipeline divided into first and second pipelines. The check valve is included in a communication path formed within the housing. The check valve includes a cylindrical pipe member with a hollow portion and an opening portion. A valve body is disposed on the outer circumference of the pipe member. A first path configuring a portion of the intake system pipeline is formed in the pipe member. In the communication path, a gap configuring a portion of the second pipeline is formed outside the pipe member. The check valve allows brake fluid to flow from the first pipeline to the second pipeline through the pipe member and the opening portion.

Abstract: A control unit of a hydraulic brake apparatus for a vehicle including a housing, a switching control valve, pressure increase control valves, pressure decrease control valves, a reservoir, a pump driven by a motor, a first passage, a second passage, an inner bore and a passage forming member being liquid-tightly fitted into the inner bore in order to form an extended ring-shaped passage, wherein the extended ring-shaped passage forms a part of the first passage, and the switching control valve, the pressure increase control valves and the outlet valve are connected to the extended ring-shaped passage, and a part of the second passage is formed within the passage forming member, and end portions of the part of the second passage are connected to the switching control valve and the switching valve.

Abstract: A part of a bottom of a flange insertion hole that faces a flange part has a form in which an outer circumference side is nearer to the flange part than an inner circumference side. According to this, since a rounded surface of a perimeter edge of the flange part can easily contact to the bottom of the flange insertion hole, an area that receives caulking load is larger as compared with a case where only a flat surface of the flange part contacts the bottom of the flange insertion hole as before, therefore, the bottom of the flange insertion holes can be prevented from buckling.

Abstract: A brake hydraulic pressure controlling apparatus for a vehicle includes a hydraulic pressure block included in a hydraulic pressure unit and including therein a hydraulic circuit, a plurality of electromagnetic valves attached on a surface of the hydraulic pressure block and changing an opening degree of a passage of the hydraulic circuit, and an electronic control unit including an ECU board, which is electrically connected to the electromagnetic valves and on which an electronic control device executing a driving control of each of the electromagnetic valves is provided, and attached on the surface of the hydraulic pressure block so that the ECU board is covered by a case, wherein the ECU board of the electronic control unit is arranged within an area of the surface of the hydraulic pressure block and all of the plurality of the electromagnetic valves are arranged adjacently around the ECU board.

Abstract: A check valve having a spherical valve body received in a valve chamber, a valve seat for blocking the flow of fluid from the valve chamber toward an inflow port when having the spherical valve body seated thereon, and a plate-like resilient member arranged across the valve chamber. The resilient member has an annular fixed portion fixed on a circumferential wall of the valve chamber and a tongue piece portion radially extending from a radial one side of the annular fixed portion to extend an end thereof beyond an inner edge on a radial other side of the annular fixed portion. The tongue piece portion is formed to be deflected toward the valve seat side from the fixed portion and is resiliently contacted with the spherical valve body at a center part thereof for disengageably pressing the spherical valve body against the valve seat.

Abstract: A hydraulic device includes a housing and a solenoid valve to be mounted to the housing. The solenoid valve includes a plunger and a plunger-mounting sleeve in which the plunger is mounted. The plunger-mounting sleeve includes a sleeve member and a sleeve flange having a flange portion and a cylindrical portion provided at the radially outer edge of the flange portion. The plunger-mounting sleeve is fixed to the housing by seating a flange portion of the sleeve flange on a shoulder formed on a mounting hole formed in the housing, press-fitting a mounting ring loosely fitted around the sleeve member into the cylindrical portion of the sleeve flange, thereby pressing the flange portion against a seating surface of the shoulder, and further wedging the cylindrical portion into the inner periphery of the mounting hole.

Abstract: An open port is provided on an inner peripheral surface of the cylinder bore of the reservoir apparatus and the port is exposed to the exterior of the reservoir apparatus. A hollow portion is formed concentrically with the port on a reservoir body. An annular thin portion is formed between the inner peripheral surface of the cylinder bore and the hollow portion surrounding the port in a radial direction. The thin portion is outwardly deflected and deformed by being pushed outwardly in a radial direction centering on the port in a range narrower than the inner diameter of the hollow portion. Thus, the opening of the port is outwardly sunk from the inner peripheral surface of the cylinder bore thereby to form a curved surface at a root portion of the thin portion on the inner peripheral surface of the cylinder bore.