JP6676440B2 - Hydraulic pressure generator - Google Patents

Description

  The present invention relates to a hydraulic pressure generator used for a vehicle brake system.

A hydraulic pressure generating device that generates a brake hydraulic pressure in accordance with a stroke amount (operating amount) of a brake pedal includes a master cylinder connected to the brake pedal, and a stroke simulator that applies a pseudo operation reaction force to the brake pedal. And a slave cylinder driven by a motor.
As the above-described hydraulic pressure generating device, there is a device in which a master cylinder, a stroke simulator, and a slave cylinder are provided on a single base (for example, see Patent Document 1).

JP 2014-525875 A

In the above-described conventional hydraulic pressure generating device, both cylinder holes of the master cylinder and the stroke simulator are opened on the rear surface of the base, and the cylinder holes of the slave cylinder are opened on the right side of the base. The bottom of the cylinder hole of the slave cylinder projects from the left side surface of the base. Further, in the conventional hydraulic pressure generating device, a plurality of solenoid valves are mounted on the left side surface of the base.
As described above, in the conventional hydraulic pressure generating device, since the plurality of solenoid valves and the bottom of the cylinder hole are arranged on the same surface, the side surface of the base becomes large and the housing inside the housing attached to the left side surface of the base becomes large. There is a problem that the layout property is low.

  SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, to provide a hydraulic pressure generating device capable of reducing the size of a base and improving layout in a housing.

  In order to solve the above-mentioned problem, the present invention relates to a hydraulic pressure generating device, comprising: a master cylinder that generates a brake hydraulic pressure by a base, a motor attached to the base, and a first piston connected to a brake operator. And a slave cylinder that generates brake fluid pressure by a second piston driven by the motor. The base has a bottomed first cylinder hole into which the first piston is inserted, and a bottomed second cylinder hole into which the second piston is inserted. The axis of the first cylinder hole, the axis of the second cylinder hole, and the axis of the output shaft of the motor are arranged in parallel. A plurality of solenoid valves are attached to a first side surface of the base, and the first cylinder hole is opened on a second side surface of the base adjacent to the first side surface. The respective solenoid valves are all arranged on one side above or below the first cylinder hole.

  In the present invention, the configuration in which the axis of the first cylinder hole, the axis of the second cylinder hole, and the axis of the output shaft of the motor are arranged in parallel is a configuration other than the configuration in which the axes are arranged in parallel (each axis Are substantially parallel to each other).

  In the hydraulic pressure generating device of the present invention, the first cylinder hole and the second cylinder hole are opened on a side different from the side on which the solenoid valve is mounted. Further, in the hydraulic pressure generating device of the present invention, since the plurality of solenoid valves are all concentrated on one of the upper side and the lower side of the first cylinder hole, the position may be affected by the position of the first cylinder hole or the second cylinder hole. Instead, a plurality of solenoid valves can be arranged on the side surface of the base. Therefore, in the hydraulic pressure generating device of the present invention, a plurality of solenoid valves can be efficiently laid out in the housing attached to the side of the base, and each solenoid valve can be compactly arranged on the side of the base. The substrate can be downsized.

  Further, as in the hydraulic pressure generating device of the present invention, by disposing the axis of the first cylinder hole, the axis of the second cylinder hole, and the axis of the output shaft of the motor in parallel, both cylinder holes and the motor are arranged in a well-balanced manner. Therefore, the stability of the hydraulic pressure generating device can be improved, and the size of the base can be reduced.

In the above-described hydraulic pressure generating device, it is preferable that the first cylinder hole and the second cylinder hole are opened in the second side surface of the base.
With this configuration, since both cylinder holes can be machined from one direction with respect to the base, and various components can be assembled from both directions with respect to both cylinder holes, the production efficiency of the hydraulic pressure generator can be increased. Can be.

  In the above-described hydraulic pressure generating device, it is preferable that the second cylinder hole and the output shaft are arranged below the first cylinder hole, and the slave cylinder and the motor are arranged below the master cylinder.

  In this configuration, the master cylinder, the slave cylinder, and the motor are arranged in a well-balanced manner with respect to the base, and the center of gravity of the hydraulic pressure generating device is reduced. Therefore, the stability of the hydraulic pressure generating device is improved and the hydraulic pressure generating device is downsized can do. In particular, since the motor is a heavy component, by arranging it below the hydraulic pressure generator, the stability of the hydraulic pressure generator can be effectively increased.

  In the above-described hydraulic pressure generating device, the weight balance of the hydraulic pressure generating device is improved by disposing the second cylinder hole and the output shaft on the left and right of a vertical reference plane including the axis of the first cylinder hole. Is preferred.

  In the above-described hydraulic pressure generating device, when an electronic control device that controls the motor is attached to the first side surface of the base, the electronic components provided in the electronic control device are positioned below the electromagnetic valves. By arranging, it is preferable to effectively use the space on the side surface of the base.

In the above-described hydraulic pressure generating device, the electronic control device includes a housing attached to the first side surface of the base, and a control board housed in the housing, and seals an opening of the housing. It is preferable that the sealing member be provided with a heat radiating portion that is in contact with the control board.
With this configuration, since the heat of the control board is efficiently transmitted to the housing through the sealing member, the heat of the control board can be sufficiently radiated through the sealing member.

In the above-described hydraulic pressure generating device, the electronic control device includes a housing attached to the first side surface of the base, and a control substrate housed in the housing, and the side surface of the base includes the It is preferable to provide a heat radiating portion that is in contact with the control board.
In this configuration, since the heat of the control board is efficiently transmitted to the base through the heat radiating portion, the heat of the control board can be sufficiently radiated through the base.

  In the above-described hydraulic pressure generating device, a stroke simulator that applies a pseudo operation reaction force to the brake operating member by an energized third piston is provided, and the base has a bottomed bottom in which the third piston is inserted. When having three cylinder holes, the axis of the third cylinder hole is arranged in parallel with the axis of the first cylinder hole, and the first cylinder hole, the second cylinder hole and the third cylinder hole are arranged. Is preferably opened on the second side surface of the base.

  In this configuration, the cylinder holes of the master cylinder, the slave cylinder, and the stroke simulator are opened on the same side surface of the base. Therefore, each cylinder hole can be machined from one direction to the base, and various parts can be assembled from one direction to each cylinder hole. Can be improved, and the production efficiency of the hydraulic pressure generator can be increased.

  In the hydraulic pressure generating device of the present invention, the side surface of the base can be reduced, and the base can be downsized. Further, in the hydraulic pressure generating device of the present invention, a plurality of solenoid valves can be efficiently laid out in the housing, and each solenoid valve can be compactly arranged on the side surface of the base. Can be. Further, in the present invention, since the cylinder holes and the motor can be arranged in a well-balanced manner, the stability of the hydraulic pressure generator can be improved.

FIG. 1 is an overall configuration diagram illustrating a vehicle brake system using a hydraulic pressure generator according to an embodiment. It is the perspective view which looked at the hydraulic pressure generator of this embodiment from upper right rear. FIG. 2 is a right side view showing the hydraulic pressure generating device of the present embodiment. It is the perspective view which looked at the hydraulic pressure generating device of this embodiment from the upper left front. FIG. 2 is a left side view illustrating the hydraulic pressure generating device of the present embodiment. It is the front view which showed the hydraulic pressure generator of this embodiment. FIG. 2 is a rear view showing the hydraulic pressure generating device of the present embodiment. FIG. 3 is a rear view showing a base of the hydraulic pressure generating device of the present embodiment. FIG. 2 is a right side view showing a base of the hydraulic pressure generating device of the present embodiment. It is the front view which showed the base | substrate and the electronic control unit of the hydraulic pressure generator of other embodiment.

An embodiment of the present invention will be described in detail with reference to the drawings as appropriate.
In the present embodiment, a case where the hydraulic pressure generating device of the present invention is applied to a vehicle brake system will be described as an example.

  As shown in FIG. 1, a vehicle brake system A includes a by-wire type brake system that operates when a prime mover (engine, electric motor, etc.) is started, and a hydraulic type brake system that operates when a prime mover stops. It has both of the brake systems.

  The vehicle brake system A can be mounted on a hybrid vehicle using a motor, an electric vehicle or a fuel cell vehicle using only a motor as a power source, or a vehicle using only an engine (internal combustion engine) as a power source.

  The vehicle brake system A generates a brake hydraulic pressure in accordance with a stroke amount (operating amount) of a brake pedal BP (“brake operator” in the claims) and a hydraulic pressure that assists in stabilizing the vehicle behavior. A generator 1 is provided.

  The hydraulic pressure generating device 1 includes a base 100, a master cylinder 10 that generates a brake hydraulic pressure according to a stroke amount of a brake pedal BP, a stroke simulator 40 that applies a pseudo operation reaction force to the brake pedal BP, and a motor. And a slave cylinder 20 that generates brake fluid pressure using the drive source 24 as a drive source. Further, the hydraulic pressure generating device 1 controls the hydraulic pressure of the brake fluid acting on each wheel cylinder W of the wheel brake BR to support the stabilization of the vehicle behavior, a hydraulic pressure control device 30, an electronic control device 90, And a reservoir tank 80.

  In addition, although each direction in the following description is set for convenience in describing the hydraulic pressure generating device 1, it generally matches the direction when the hydraulic pressure generating device 1 is mounted on a vehicle. That is, the moving direction of the rod R when the brake pedal BP is depressed is set to the front (front end side), and the moving direction of the rod R when the brake pedal BP returns is set to the rear (rear end side) (see FIG. 2). . Furthermore, a direction perpendicular to the direction of movement of the rod R (front-back direction) is defined as a left-right direction (see FIG. 2).

  The base 100 is a metal block mounted on a vehicle (see FIG. 4), and has three cylinder holes 11, 21, 41 and a plurality of hydraulic paths 2a, 2b, 3, 4, inside the base 100. 5a, 5b, 73, 74, etc. are formed. Various components such as the reservoir tank 80 and the motor 24 are attached to the base 100.

  As shown in FIG. 9, a first cylinder hole 11, a second cylinder hole 21, and a third cylinder hole 41 having a bottomed cylindrical shape are formed in the base 100. The cylinder holes 11, 21, 41 extend in the front-rear direction, and the axes L1, L2, L3 of the cylinder holes 11, 21, 41 are arranged in parallel and in parallel. The rear end of each of the cylinder holes 11, 21, 41 is open to the rear surfaces 101b, 102b ("second side surface" in the claims) of the base 100.

  As shown in FIG. 1, the master cylinder 10 is of a tandem piston type, and includes two first pistons 12 a and 12 b (secondary piston and primary piston) inserted into the first cylinder hole 11 and a first cylinder hole 11. And two coil springs 17a and 17b housed therein.

  A bottom pressure chamber 16a is formed between the bottom surface 11a of the first cylinder hole 11 and the bottom first piston 12a (secondary piston). A coil spring 17a is housed in the bottom pressure chamber 16a. The coil spring 17a pushes the first piston 12a, which has moved to the bottom surface 11a, back to the opening 11b.

  An opening side pressure chamber 16b is formed between the bottom first piston 12a and the opening side first piston 12b (primary piston). A coil spring 17b is housed in the opening side pressure chamber 16b. The coil spring 17b pushes the first piston 12b moved to the bottom surface 11a back to the opening 11b.

The rod R of the brake pedal BP is inserted into the first cylinder hole 11. The tip of the rod P1 is connected to the first piston 12b on the opening side. Thus, the first piston 12b on the opening side is connected to the brake pedal BP via the rod R.
The first pistons 12a and 12b slide in the first cylinder hole 11 under the depression force of the brake pedal BP, and pressurize the brake fluid in the bottom pressure chamber 16a and the opening pressure chamber 16b.

  The reservoir tank 80 is a container for supplying brake fluid to the reservoir union ports 81 and 82, and is attached to the upper surface 101e of the base 100 (see FIG. 2). The two liquid supply portions projecting from the lower surface of the reservoir tank 80 are inserted into two reservoir union ports 81 and 82 formed on the upper surface 101e of the base 100. Brake fluid is supplied from the reservoir tank 80 to the inside of the bottom pressure chamber 16a and the inside of the opening side pressure chamber 16b through the reservoir union ports 81 and 82.

  The stroke simulator 40 includes a third piston 42 inserted into the third cylinder hole 41, a lid member 44 for closing the opening 41 b of the third cylinder hole 41, and the stroke simulator 40 accommodated between the third piston 42 and the lid member 44. And two coil springs 43a and 43b.

A pressure chamber 45 is formed between the bottom surface 41 a of the third cylinder hole 41 and the third piston 42. The pressure chamber 45 in the third cylinder hole 41 communicates with the opening-side pressure chamber 16b of the first cylinder hole 11 via a branch hydraulic pressure passage 3 and a second main hydraulic pressure passage 2b described later.
In the stroke simulator 40, the third piston 42 of the stroke simulator 40 moves and is urged against the urging force of the coil springs 43a and 43b by the brake fluid pressure generated in the opening-side pressure chamber 16b of the master cylinder 10. A pseudo operation reaction force is applied to the brake pedal BP by the third piston 42.
The back pressure chamber 47 formed between the lid member 44 and the third piston 42 communicates with the reservoir tank 80 via the reservoir tank communication passage 9.

  The slave cylinder 20 is a single piston type, and includes a second piston 22 inserted into the second cylinder hole 21, a coil spring 23 housed in the second cylinder hole 21, a motor 24, and a drive transmission unit 25. , Is provided.

  A pressure chamber 26 is formed between the bottom surface 21 a of the second cylinder hole 21 and the second piston 22. Further, the coil spring 23 is accommodated in the pressure chamber 26. The coil spring 23 pushes the second piston 22 having moved to the bottom surface 21a side to the opening 21b side.

The motor 24 is an electric servomotor whose drive is controlled by an electronic control unit 90 described later. An output shaft 24a projects rearward from the center of the rear surface of the motor 24.
The motor 24 is attached to the front surface of the flange portion 103 of the base 100 (see FIG. 5). The output shaft 24a is inserted into an insertion hole 103c formed in the flange 103, and protrudes rearward of the flange 103. A drive pulley 24b is attached to the rear end of the output shaft 24a.

The drive transmission unit 25 is a mechanism that converts the rotational driving force of the output shaft 24a of the motor 24 into a linear axial force.
The drive transmission unit 25 includes a rod 25a, a cylindrical nut member 25b surrounding the rod 25a, a driven pulley 25c provided around the entire periphery of the nut member 25b, a driven pulley 25c, and a drive pulley 24b. And a cover member 25e.

The rod 25 a is inserted into the second cylinder hole 21 from the opening 21 b of the second cylinder hole 21, and the front end of the rod 25 a contacts the second piston 22. The rear portion of the rod 25a projects rearward from the rear surface 102b of the base 100.
A ball screw mechanism is provided between the outer peripheral surface of the rear part of the rod 25a and the inner peripheral surface of the nut member 25b. The nut member 25b is fixed to the base 100 via a bearing.

When the output shaft 24a rotates, the rotational driving force is input to the nut member 25b via the driving pulley 24b, the belt 25d, and the driven pulley 25c. Then, a linear axial force is applied to the rod 25a by a ball screw mechanism provided between the nut member 25b and the rod 25a, and the rod 25a moves forward and backward.
When the rod 25a moves forward, the second piston 22 slides in the second cylinder hole 21 in response to an input from the rod 25a, and pressurizes the brake fluid in the pressure chamber 26.

Next, each hydraulic path formed in the base 100 will be described.
As shown in FIG. 1, the two main hydraulic paths 2 a and 2 b are hydraulic paths starting from the first cylinder hole 11 of the master cylinder 10.
The first main hydraulic pressure passage 2a communicates with the two wheel brakes BR, BR from the bottom pressure chamber 16a of the master cylinder 10 via the hydraulic pressure control device 30.
The second main hydraulic passage 2b communicates with the other two wheel brakes BR, BR from the opening side pressure chamber 16b of the master cylinder 10 via the hydraulic control device 30.

  The branch hydraulic pressure path 3 is a hydraulic pressure path from the pressure chamber 45 of the stroke simulator 40 to the second main hydraulic pressure path 2b. The branch hydraulic pressure path 3 is provided with a normally closed solenoid valve 8. The normally closed solenoid valve 8 opens and closes the branch hydraulic pressure path 3.

The two communication passages 5 a and 5 b are hydraulic pressure paths starting from the second cylinder hole 21 of the slave cylinder 20. The two communication passages 5 a and 5 b join the common hydraulic pressure passage 4 and communicate with the second cylinder hole 21.
The first communication path 5a is a flow path from the pressure chamber 26 in the second cylinder hole 21 to the first main hydraulic pressure path 2a, and the second communication path 5b is connected from the pressure chamber 26 to the second main hydraulic pressure path 2b. The flow path leading to

A first switching valve 51, which is a three-way valve, is provided at a connection portion between the first main hydraulic passage 2a and the first series passage 5a. The first switching valve 51 is a 2-position 3-port solenoid valve.
When the first switching valve 51 is in the first position shown in FIG. 1, the upstream side (the master cylinder 10 side) and the downstream side (the wheel brake BR side) of the first main hydraulic pressure path 2a communicate with each other, The hydraulic passage 2a and the first series passage 5a are shut off.
When the first switching valve 51 is in the second position, the upstream side and the downstream side of the first main hydraulic passage 2a are shut off, and the first series passage 5a communicates with the downstream side of the first main hydraulic passage 2a. I do.

A second switching valve 52, which is a three-way valve, is provided at a connection portion between the second main hydraulic path 2b and the second communication path 5b. The second switching valve 52 is a 2-position 3-port solenoid valve.
When the second switching valve 52 is in the first position shown in FIG. 1, the upstream side (the master cylinder 10 side) and the downstream side (the wheel brake BR side) of the second main hydraulic path 2b communicate with each other, The hydraulic passage 2b and the second communication passage 5b are shut off.
When the second switching valve 52 is in the second position, the upstream side and the downstream side of the second main hydraulic path 2b are shut off, and the second communication path 5b communicates with the downstream side of the second main hydraulic path 2b. I do.

A first shutoff valve 61 is provided in the first series passage 5a. The first shutoff valve 61 is a normally-open solenoid valve. When the first shut-off valve 61 is closed during energization, the first series passage 5a is shut off at the first shut-off valve 61.
A second shutoff valve 62 is provided in the second communication path 5b. The second shutoff valve 62 is a normally-open solenoid valve. When the second shut-off valve 62 closes when energized, the second communication passage 5b is shut off at the second shut-off valve 62.

The two pressure sensors 6 and 7 detect the magnitude of the brake fluid pressure, and information obtained by the two pressure sensors 6 and 7 is output to the electronic control unit 90.
The first pressure sensor 6 is arranged upstream of the first switching valve 51 and detects a brake fluid pressure generated in the master cylinder 10.
The second pressure sensor 7 is disposed downstream of the second switching valve 52, and when the communication paths 5a, 5b and the downstream sides of the main hydraulic pressure paths 2a, 2b are in communication, the slave cylinder At step 20, the brake fluid pressure generated is detected.

The slave cylinder supply path 73 is a liquid path from the reservoir tank 80 to the slave cylinder 20. Further, the slave cylinder supply path 73 is connected to the common hydraulic pressure path 4 via a branch supply path 73a.
The branch supply path 73a is provided with a check valve 73b that allows only the flow of the brake fluid from the reservoir tank 80 side to the common hydraulic pressure path 4 side.
Normally, the brake fluid is supplied from the reservoir tank 80 to the slave cylinder 20 through the slave cylinder supply passage 73.
Further, during the liquid suction control, the brake liquid is sucked from the reservoir tank 80 to the slave cylinder 20 through the slave cylinder supply path 73, the branch supply path 73a, and the common hydraulic pressure path 4.

  The return liquid path 74 is a liquid path from the hydraulic pressure control device 30 to the reservoir tank 80. The brake fluid released from each wheel cylinder W via the fluid pressure control device 30 flows into the return fluid passage 74. The brake fluid released to the return fluid passage 74 is returned to the reservoir tank 80 through the return fluid passage 74.

The fluid pressure control device 30 appropriately controls the fluid pressure of the brake fluid acting on each wheel cylinder W of each wheel brake BR. The hydraulic pressure control device 30 has a configuration capable of executing antilock brake control. Each wheel cylinder W is connected to an outlet port 301 of the base 100 via a pipe.
The hydraulic pressure control device 30 can increase, hold, or reduce the hydraulic pressure acting on the wheel cylinder W (hereinafter, referred to as “wheel cylinder pressure”). The hydraulic control device 30 includes an inlet valve 31, an outlet valve 32, and a check valve 33.

The inlet valve 31 has two hydraulic paths from the first main hydraulic path 2a to the two wheel brakes BR, BR, and two hydraulic paths from the second main hydraulic path 2b to the two wheel brakes BR, BR. They are arranged one by one on the road.
The inlet valve 31 is a normally-opened proportional solenoid valve (linear solenoid valve), and is capable of adjusting the valve opening pressure of the inlet valve 31 according to the value of the current flowing through the coil of the inlet valve 31.
The inlet valve 31 is normally open, thereby allowing the hydraulic pressure to be applied from the slave cylinder 20 to each wheel cylinder W. When the wheels are about to lock, the inlet valve 31 closes under the control of the electronic control unit 90, and shuts off the hydraulic pressure applied to each wheel cylinder W.

The outlet valve 32 is a normally closed solenoid valve disposed between each wheel cylinder W and the return liquid passage 74.
The outlet valve 32 is normally closed, but is opened under the control of the electronic control unit 90 when the wheels are about to lock.

  The check valve 33 is connected in parallel to each inlet valve 31. The check valve 33 is a valve that allows only the flow of the brake fluid from the wheel cylinder W side to the slave cylinder 20 side (master cylinder 10 side). Therefore, even when the inlet valve 31 is closed, the check valve 33 allows the flow of the brake fluid from each wheel cylinder W side to the slave cylinder 20 side.

The electronic control unit 90 includes a housing 91 which is a resin box, and a control board (not shown) accommodated in the housing 91. The housing 91 is attached to the right side surface 101d of the base 100, as shown in FIG.
As shown in FIG. 1, the electronic control unit 90 controls the motor based on information obtained from various sensors such as the pressure sensors 6 and 7 and a stroke sensor (not shown), a program stored in advance, and the like. 24 and controls the opening and closing of each valve.

Next, the operation of the vehicle brake system A will be schematically described.
In the vehicle brake system A shown in FIG. 1, when the system is started, both the switching valves 51 and 52 are excited, and the above-described first position is switched to the second position.
Thus, the downstream side of the first main hydraulic path 2a communicates with the first series passage 5a, and the downstream side of the second main hydraulic path 2b communicates with the second communication path 5b. Then, while the master cylinder 10 and each wheel cylinder W are shut off, the slave cylinder 20 and the wheel cylinder W communicate with each other.

When the system is started, the normally closed solenoid valve 8 of the branch hydraulic pressure path 3 is opened. Thus, the hydraulic pressure generated in the master cylinder 10 by operating the brake pedal BP is transmitted to the stroke simulator 40 without being transmitted to the wheel cylinder W.
Then, the hydraulic pressure in the pressure chamber 45 of the stroke simulator 40 increases, and the third piston 42 moves toward the lid member 44 against the urging force of the coil springs 43a and 43b, thereby allowing the stroke of the brake pedal BP. Then, a pseudo operation reaction force is applied to the brake pedal BP.

When the depression of the brake pedal BP is detected by a stroke sensor (not shown), the motor 24 of the slave cylinder 20 is driven by the electronic control unit 90, and the second piston 22 of the slave cylinder 20 is moved to the bottom surface 21a side. Moving. Thereby, the brake fluid in the pressure chamber 26 is pressurized.
The electronic control unit 90 compares the generated hydraulic pressure of the slave cylinder 20 (the hydraulic pressure detected by the second pressure sensor 7) with the required hydraulic pressure corresponding to the operation amount of the brake pedal BP, and based on the comparison result. Control the rotation speed of the motor 24.
Thus, in the vehicle brake system A, the hydraulic pressure is increased in accordance with the operation amount of the brake pedal BP. Then, the hydraulic pressure generated in the slave cylinder 20 is input to the hydraulic pressure control device 30.

  When the depression of the brake pedal BP is released, the motor 24 of the slave cylinder 20 is driven to rotate in the reverse direction by the electronic control unit 90, and the second piston 22 is returned to the motor 24 by the coil spring 23. Thereby, the pressure in the pressure chamber 26 is reduced.

When the detection value of the second pressure sensor 7 does not increase to the determination value while the motor 24 of the slave cylinder 20 is being driven, the electronic control unit 90 closes both shutoff valves 61 and 62, The slave cylinder 20 is driven under pressure.
If the detection value of the second pressure sensor 7 still does not increase, there is a possibility that the brake fluid has decreased in the path closer to the slave cylinder 20 than the two shut-off valves 61 and 62. Each valve is controlled such that the hydraulic pressure directly acts on each wheel cylinder W from the master cylinder 10.

When the detection value of the second pressure sensor 7 rises when both the shut-off valves 61 and 62 are closed and the slave cylinder 20 is pressurized, the electronic control unit 90 closes the first shut-off valve 61. At the same time, the second shut-off valve 62 is opened to drive the slave cylinder 20 under pressure.
As a result, when the detection value of the second pressure sensor 7 increases, the brake fluid may have decreased in the first main hydraulic pressure path 2a. In the path 2b, the pressure increase of the hydraulic pressure by the slave cylinder 20 is continued.

On the other hand, if the detection value of the second pressure sensor 7 does not increase even when the first shutoff valve 61 is closed and the second shutoff valve 62 is opened and the slave cylinder 20 is pressurized and driven, the electronic control unit 90 opens the first shut-off valve 61 and closes the second shut-off valve 62 to pressurize and drive the slave cylinder 20.
As a result, when the detection value of the second pressure sensor 7 increases, the electronic control unit 90 may determine that the brake fluid has decreased in the second main hydraulic pressure passage 2b. In the path 2a, the pressure increase of the hydraulic pressure by the slave cylinder 20 is continued.

In the hydraulic pressure control device 30, the electronic control device 90 controls the open / close state of the inlet valve 31 and the outlet valve 32, thereby adjusting the wheel cylinder pressure of each wheel cylinder W.
For example, in a normal state in which the inlet valve 31 is opened and the outlet valve 32 is closed, when the brake pedal BP is depressed, the hydraulic pressure generated in the slave cylinder 20 is directly transmitted to the wheel cylinder W, and the wheel cylinder pressure increases. Press.
When the inlet valve 31 is closed and the outlet valve 32 is opened, the brake fluid flows out from the wheel cylinder W to the return fluid path 74 side, and the wheel cylinder pressure is reduced and reduced.
Further, when both the inlet valve 31 and the outlet valve 32 are closed, the wheel cylinder pressure is maintained.

  When the slave cylinder 20 does not operate (for example, when the ignition is turned off or power cannot be obtained), the first switching valve 51, the second switching valve 52, and the normally closed solenoid valve 8 return to the initial state. . Thereby, the upstream side and the downstream side of both main hydraulic paths 2a and 2b communicate with each other. In this state, the hydraulic pressure generated in the master cylinder 10 is transmitted to each wheel cylinder W via the hydraulic pressure control device 30.

Next, the arrangement of the master cylinder 10, the slave cylinder 20, the stroke simulator 40, the hydraulic pressure control device 30, and the electronic control device 90 in the hydraulic pressure generation device 1 of the present embodiment will be described.
In the following description, the arrangement of each device in a state where the hydraulic pressure generating device 1 is mounted on a vehicle will be described.

  The upper portion 101 of the base 100 of the present embodiment is formed in a substantially rectangular parallelepiped shape as shown in FIGS. In the upper part 101, as shown in FIG. 9, a first cylinder hole 11 and a third cylinder hole 41 are formed. As shown in FIG. 2, a reservoir tank 80 is attached to the upper surface 101e of the upper portion 101.

As shown in FIG. 7, a first cylinder hole 11 of the master cylinder 10 is formed in the center of the upper portion 101 of the base 100 in the vertical and horizontal directions (see FIG. 8).
The first cylinder hole 11 is a bottomed cylindrical hole. As shown in FIG. 9, the axis L1 of the first cylinder hole 11 extends in the front-rear direction. The rear end of the first cylinder hole 11 opens to the rear surface 101b of the upper part 101. That is, the first cylinder hole 11 is open rearward.

As shown in FIG. 5, a vehicle body mounting surface 104 is formed on a rear surface 101b of an upper portion 101 of the base body 100. The vehicle body mounting surface 104 is a portion that is mounted on the front surface of a dashboard B that separates an engine room and a vehicle room.
As shown in FIG. 7, an opening 11b of the first cylinder hole 11 is opened at the center of the vehicle body mounting surface 104. In addition, four stud bolts 105 are erected at the four corners of the vehicle body mounting surface 104 at the upper, lower, left and right sides.

  When attaching the base body 100 to the dashboard B, as shown in FIG. 5, each stud bolt 105 is inserted into an attachment hole (not shown) of the dashboard B from the engine room side (the left side in FIG. 5). Then, the front end of each stud bolt 105 is attached to the vehicle body frame (not shown) on the vehicle compartment side (the right side in FIG. 5). Thereby, the base 100 can be fixed to the front surface of the dashboard B.

In the upper part 101 of the base 100, a third cylinder hole 41 of the stroke simulator 40 is formed on the left side of the first cylinder hole 11, as shown in FIG. 7 (see FIG. 8).
The third cylinder hole 41 is a bottomed cylindrical hole. The axis L3 of the third cylinder hole 41 extends in the front-rear direction as shown in FIG.
The axis L3 of the third cylinder hole 41 is parallel to the axis L1 of the first cylinder hole 11. Thus, the first cylinder hole 11 and the third cylinder hole 41 are arranged in parallel and in parallel.
As shown in FIG. 8, the axis L3 of the third cylinder hole 41 and the axis L1 of the first cylinder hole 11 are arranged side by side on a horizontal reference plane S1 (virtual plane).
The distance between the first cylinder hole 11 and the third cylinder hole 41 is set smaller than the radius of the first cylinder hole 11, and the first cylinder hole 11 and the third cylinder hole 41 are adjacent to each other in the left-right direction. I have. In addition, the diameter of the first cylinder hole 11 is formed smaller than the diameter of the third cylinder hole 41.

The third cylinder hole 41 is opened in the rear surface 101b of the upper portion 101 of the base 100. That is, the third cylinder hole 41 is open rearward.
A substantially left half of the peripheral wall portion of the third cylinder hole 41 protrudes leftward from the left side surface 101c of the upper portion 101, as shown in FIG.

As shown in FIG. 8, the lower part 102 of the base 100 is formed continuously with the upper part 101 and protrudes rightward from the right side surface 101d of the upper part 101. The left side surface 102c of the lower portion 102 is offset to the right from the left side surface 101c of the upper portion 101.
As shown in FIG. 9, the rear surface 102b of the lower portion 102 is offset forward of the rear surface 101b of the upper portion 101 (the vehicle body mounting surface 104). Further, a front portion 102a of the lower portion 102 projects forward from a front surface 101a of the upper portion 101.

As shown in FIG. 7, a second cylinder hole 21 of the slave cylinder 20 is formed in the lower portion 102 of the base 100 (see FIG. 8).
The second cylinder hole 21 is a bottomed cylindrical hole. The axis L2 of the second cylinder hole 21 extends in the front-rear direction as shown in FIG.
The second cylinder hole 21 is disposed below the first cylinder hole 11 and the third cylinder hole 41, as shown in FIG. Are located in

The axis L2 of the second cylinder hole 21 is parallel to the axis L1 of the first cylinder hole 11 and the axis L3 of the third cylinder hole 41, as shown in FIG. Thus, the first cylinder hole 11, the second cylinder hole 21, and the third cylinder hole 41 are arranged in parallel and in parallel.
The second cylinder hole 21 is opened in the rear surface 102b of the lower part 102 of the base 100. That is, the second cylinder hole 21 is open rearward.

  As shown in FIG. 8, a flange 103 protruding leftward is formed at the rear end of the lower part 102 of the base 100. The flange portion 103 is a plate-shaped portion that stands vertically with respect to the left side surface 102c of the lower portion 102.

As shown in FIG. 5, the front surface of the flange 103 is a motor mounting surface 103a on which the motor 24 is mounted. The rear surface of the flange portion 103 is a drive transmission portion mounting surface 103b to which the drive transmission portion 25 is mounted.
The drive transmission portion mounting surface 103b of the flange portion 103 is formed continuously with the rear surface 102b of the lower portion 102, and forms the same plane. The drive transmission unit mounting surface 103b is offset forward of the rear surface 101b of the upper part 101, similarly to the rear surface 102b of the lower part 102. That is, the drive transmission unit mounting surface 103b is disposed forward of the vehicle body mounting surface 104 of the upper portion 101.

  The motor 24 is mounted on the motor mounting surface 103a of the flange portion 103. The front end face of the motor 24 is arranged behind the front face 101 a of the upper part 101 of the base 100. The motor 24 is arranged at a position near the center of the base 100 in the front-rear direction and the left-right direction.

  An insertion hole 103c extends through the flange 103 in the front-rear direction. The output shaft 24a protruding rearward from the rear surface of the motor 24 is inserted into the insertion hole 103c, and protrudes rearward from the drive transmission unit mounting surface 103b through the insertion hole 103c.

As shown in FIG. 8, the insertion hole 103 c of the flange portion 103 is disposed below the first cylinder hole 11 and the third cylinder hole 41 and obliquely below the first cylinder hole 11.
Therefore, when the motor 24 is attached to the flange portion 103, the output shaft 24a is located below the first cylinder hole 11 and the third cylinder hole 41 and obliquely below the first cylinder hole 11 as shown in FIG. Be placed.

When the motor 24 is mounted on the flange 103, as shown in FIG. 5, the axis L4 of the output shaft 24a extends in the front-rear direction.
The axis L4 of the output shaft 24a is parallel to the axes L1, L2, L3 of the cylinder holes 11, 21, 41. Thus, each of the cylinder holes 11, 21, 41 and the output shaft 24a are arranged in parallel and in parallel.
The axis L4 of the output shaft 24a and the axis L2 of the second cylinder hole 21 are horizontally arranged in the left-right direction, as shown in FIG.

As shown in FIG. 1, the components of the drive transmission unit 25 are mounted on the rear surface 102 b of the lower portion 102 of the base 100 and the drive transmission unit mounting surface 103 b of the flange 103.
As shown in FIG. 5, the rear surface 102b of the lower portion 102 and the flange portion 103 with respect to the vehicle body mounting surface 104 so that the rear end of the cover member 25e of the drive transmission portion 25 does not protrude rearward from the vehicle body mounting surface 104 of the upper portion 101. Of the drive transmission unit mounting surface 103b is set forward.
Therefore, when the vehicle body mounting surface 104 of the base body 100 is mounted on the dashboard B, the drive transmission unit 25 fits between the front surface of the dashboard B and the drive transmission unit mounting surface 103b of the flange 103 of the base 100.

In the hydraulic pressure generating device 1 of the present embodiment, as shown in FIG. 7, the second cylinder hole 21 and the motor 24 (output shaft 24a) are connected to the axis L1 of the first cylinder hole 11 and the axis L3 of the third cylinder hole 41. Are disposed below a horizontal reference plane S1 (virtual plane) including
Further, the third cylinder hole 41 and the motor 24 (output shaft 24a) are disposed to the left of a vertical reference plane S2 (virtual plane) including the first cylinder hole 11. Further, the second cylinder hole 21 is disposed on the right side of the vertical reference plane S2 including the first cylinder hole 11.

Thus, in the hydraulic pressure generating device 1, the second cylinder hole 21 and the motor 24 are disposed below the first cylinder hole 11 and on the left and right of the vertical reference plane S2 including the axis L1 of the first cylinder hole 11. Have been.
Therefore, when the hydraulic pressure generator 1 is viewed from the front-back direction, the center point of the first cylinder hole 11 (axis L1), the center point of the second cylinder hole 21 (axis L2), and the center point of the output shaft 24a (axis line). The line connecting L4) is arranged in a positional relationship of a triangle. That is, when the hydraulic pressure generating device 1 is viewed from the front-back direction, the first cylinder hole 11 (master cylinder 10) is set as the apex of the triangle, and the second cylinder hole 21 (slave cylinder 20) is formed at the left and right ends of the base of the triangle. ) And an output shaft 24a (motor 24).

As shown in FIG. 2, an electronic control unit 90 is mounted on the right side surface 101d (the "first side surface" in the claims) of the upper portion 101 of the base body 100.
As shown in FIG. 9, a plurality of mounting holes 110 are opened on the right side surface 101d of the base 100. In the present embodiment, fifteen mounting holes 110 are arranged at substantially equal intervals in five rows and three rows. Each mounting hole 110 is arranged in a region above the first cylinder hole 11 (the upper half region of the right side surface 101d).

As shown in FIG. 3, each mounting hole 110 is provided with a solenoid valve V (reference numerals 51, 52, 61, 62, 8, 31, 32 in FIG. 1) and a pressure sensor P (reference numerals 6, 7 in FIG. 1). And communicates with the liquid path in the substrate 100.
FIG. 3 shows a state where the cover member 94 and the control board 95 are removed from the housing 91 of the control device 90.
As shown in FIG. 6, the distal ends of the solenoid valves V and the pressure sensors P mounted in the mounting holes 110 project from the right side surface 101d.

As shown in FIG. 3, the electronic control unit 90 includes a housing 91, which is a box made of synthetic resin, and a control board 95 housed in the housing 91 (see FIG. 6).
The housing 91 includes a peripheral wall portion 91a and a lid member 94 (“sealing member” in the claims) that seals an opening on the right side of the peripheral wall portion 91a. The peripheral wall portion 91a is attached to the right side surface 101d (see FIG. 2).
The housing 91 is attached to the right side surface 101d in a state of covering each electromagnetic valve V and each pressure sensor P protruding from the right side surface 101d.
The housing 91 is fixed to the right side surface 101d by screwing a bolt inserted into a mounting hole formed in the peripheral wall portion 91a of the housing 91 into a screw hole on the right side surface 101d.

  The housing 91 is arranged above the second cylinder hole 21. As described above, the housing 91 and the slave cylinder 20 are arranged vertically vertically on the right side of the upper portion 101 of the base 100 (see FIG. 7).

As shown in FIG. 6, in the space inside the housing 91, a control board 95 is accommodated in a space on the front side (right side) of each solenoid valve V and each pressure sensor P.
The control board 95 controls the operation of each solenoid valve V and the motor 24 based on information obtained from various sensors, programs stored in advance, and the like.
As shown in FIG. 3, the control board 95 has a plurality of electronic components 96 mounted on a substantially rectangular board body 95a on which an electronic circuit is printed.

A component mounting area 95b is provided in the board body 95a of the present embodiment. The component mounting area 95b is arranged below each solenoid valve V and each pressure sensor P.
As shown in FIG. 6, a plurality of electronic components 96 such as a motor FET (Field Effect Transistor) and a current detection resistance component are mounted on the back side (left side) of the component mounting area 95 b in the board main body 95 a. (See FIG. 3).
Each electronic component 96 attached to the component attachment region 95b is disposed below each solenoid valve V and each pressure sensor P.

The opening on the front side (right side) of the peripheral wall portion 91a is closed by a metal lid member 94 (see FIG. 2). As described above, the inside of the housing 91 is sealed by the lid member 94 which is a sealing member.
On the inner surface (left surface) of the lid member 94, a heat radiating portion 94a protruding toward the right surface 101d side is formed. The heat radiating portion 94a is a metal protrusion that protrudes a part of the lid member 94 toward the left side (the base 100 side).

  The distal end surface of the heat radiating portion 94a faces the component mounting region 95b of the board body 95. The heat radiating portion 94a is formed in substantially the same shape as the component mounting area 95b. The distal end surface of the heat radiating portion 94a is in contact with the component mounting area 95b on the front side (left side) of the board body 95a.

As shown in FIG. 4, the front end of the housing 91 projects forward from the front surface 101a of the upper portion 101 of the base 100. An external connection connector 92 and a motor connection connector 93 are provided on the left side surface of the front part of the housing 91.
The external connection connector 92 is a portion to which a connector provided at an end of an external wiring cable (not shown) is connected. The external connection connector 92 extends forward of the front surface 101 a of the upper portion 101.
The motor connection connector 93 is arranged below the external connection connector 92. The motor connection connector 93 is a portion that is connected to the motor connector 24c of the motor 24 via a cable (not shown).

  In the hydraulic pressure generating device 1 as described above, as shown in FIG. 5, the axes L1, L2, L3 of the cylinder holes 11, 21, 41 and the axis L4 of the output shaft 24a of the motor 24 are arranged in parallel. . Thereby, since the cylinder holes 11, 21, 41 and the motor 24 can be arranged in a well-balanced manner, the stability of the hydraulic pressure generating device 1 can be improved and the base can be downsized.

In the hydraulic pressure generating device 1 of the present embodiment, as shown in FIG. 3, each of the cylinder holes 11, 21, 41 opens on the rear surface 101 b, 102 b of the base 100, and each solenoid valve V and each pressure sensor P It is attached to the right side surface 101d of the base 100. As described above, the cylinder holes 11, 21, 41 are opened on surfaces (rear surfaces 101b, 102b) different from the surfaces (right surfaces 101d) on which the solenoid valves V and the pressure sensors P are mounted.
Further, in the hydraulic pressure generating device 1 of the present embodiment, all the solenoid valves V and each pressure sensor P are integrated above the first cylinder hole 11. Thereby, each solenoid valve V and each pressure sensor P can be arranged on the right side surface 101d of the base without being affected by the positions of the first cylinder hole 11 and the second cylinder hole 21.
Therefore, in the hydraulic pressure generating device 1 of the present embodiment, each solenoid valve V and each pressure sensor P can be efficiently laid out in the housing 91, and each solenoid valve V and each pressure sensor P can be disposed on the right side of the base 1. Since the base 100 can be compactly arranged on the base 101d, the size of the base 100 can be reduced.

  In the hydraulic pressure generating device 1 of the present embodiment, the housing 91 and the slave cylinder 20 are arranged side by side in the vertical direction, and the space around the base 100 is effectively used, so that the hydraulic pressure generating device 1 is downsized. Have been.

  In the hydraulic pressure generator 1 of the present embodiment, the first cylinder hole 11 and the third cylinder hole 41 are horizontally adjacent to each other in the left-right direction, so that the master cylinder 10 can be easily connected to the stroke simulator 40. Further, since the master cylinder 10 and the stroke simulator 40 are compactly arranged, the hydraulic pressure generator 1 can be downsized.

  In the hydraulic pressure generating device 1 of the present embodiment, as shown in FIG. 7, the slave cylinder 20 and the motor 24 are disposed below the master cylinder 10, and the slave cylinder 20 and the motor 24 are provided on both left and right sides of the master cylinder 10. By arranging, the center of gravity of the hydraulic pressure generator 1 is lowered. In particular, since the motor 24 is a heavy component, it is possible to stabilize the weight balance of the master cylinder 10, the slave cylinder 20, and the motor 24 by disposing the motor 24 below the hydraulic pressure generating device 1, 1 can be effectively improved.

  In the hydraulic pressure generating device 1 of the present embodiment, as shown in FIG. 5, the drive transmission unit 25 is attached to the rear surface (the drive transmission unit attachment surface 103 b) of the flange unit 103 of the base 100, and The motor 24 is mounted on the front surface (motor mounting surface 103a). Thus, since the motor 24 and the drive transmission unit 25 are arranged in a well-balanced manner with respect to the base 100, the stability of the hydraulic pressure generating device 1 can be improved.

In the hydraulic pressure generating device 1 of the present embodiment, the master cylinder 10, the slave cylinder 20, and the three cylinder holes 11, 21, 41 of the stroke simulator 40 are opened in the same direction, and the output shaft 24a of the motor 24 is also It protrudes in the same direction as the opening direction of the cylinder holes 11, 21, 41.
Thereby, in the hydraulic pressure generating device 1, the cylinder holes 11, 21, 41 can be machined from the base 100 in one direction (rearward). Further, in the hydraulic pressure generating device 1, various components can be assembled from one direction (rearward) to each of the cylinder holes 11, 21, 41 and the output shaft 24a.
As described above, in the hydraulic pressure generating device 1, since the processability of each of the cylinder holes 11, 21, 41 and the assemblability of various parts to the base 100 can be improved, the manufacturing efficiency of the hydraulic pressure generating device 1 is improved. be able to.

  In the hydraulic pressure generating device 1 of the present embodiment, as shown in FIG. 5, when the vehicle body mounting surface 104 of the base 100 is mounted on the dashboard B, the gap between the dashboard B and the drive transmission unit mounting surface 103 b of the base 100 is formed. The drive transmission unit 25 fits in the position. Therefore, it is easy to secure a space for mounting the hydraulic pressure generating device 1 on a vehicle.

In the hydraulic pressure generating device 1 of the present embodiment, as shown in FIG. 6, a heat radiating portion 94 a formed on the lid member 94 of the housing 91 is in contact with the control board 95. Thereby, the heat of the control board 95 can be sufficiently radiated through the cover member 94.
In particular, in the present embodiment, the heat radiating portion 94a is in contact with the component mounting region 95b where the electronic component 96 such as the motor FET and the current detecting resistance component is mounted. Therefore, since the heat of the electronic component 96 is directly transmitted to the heat radiating portion 94a, the heat of the control board 95 can be efficiently transmitted to the lid member 94.

As described above, the embodiments of the present invention have been described, but the present invention is not limited to the above embodiments, and can be appropriately changed without departing from the gist of the present invention.
In the hydraulic pressure generating device 1 of the present embodiment, as shown in FIG. 3, the solenoid valve V and the pressure sensor P are all arranged above the first cylinder hole 11 in a concentrated manner. The sensors P may be all arranged below the first cylinder hole 11 in a concentrated manner.

  In the hydraulic pressure generating device 1 of the present embodiment, the respective solenoid valves V are arranged at equal intervals, but the respective solenoid valves V are all arranged on one of the upper side and the lower side of the first cylinder hole 11. If so, the solenoid valves V may not be aligned at equal intervals. Further, the intervals between the solenoid valves V are not limited, and may not be dense as in the solenoid valves V of the present embodiment.

  In the hydraulic pressure generating device 1 of the present embodiment, as shown in FIG. 7, the second cylinder hole 21 and the output shaft 24 a are arranged below the first cylinder hole 11, but above the first cylinder hole 11. The second cylinder hole 21 and the output shaft 24a may be arranged. In this case, a line connecting the center point of the first cylinder hole 11, the center point of the second cylinder hole 21, and the center point of the output shaft 24a when the hydraulic pressure generating device 1 is viewed from the front-back direction is an inverted triangle. Are arranged in a positional relationship as follows.

  In the hydraulic pressure generating device 1 of this embodiment, the cylinder holes 11, 21, 41 are opened in the rear surfaces 101b, 102b of the base 100, but the cylinder holes 11, 21, 41 are opened in different directions in the front and rear directions. May be.

In the hydraulic pressure generating device 1 of the present embodiment, as shown in FIG. 5, the output shaft 24a projects rearward from the motor 24, but the output shaft 24a projects forward from the motor 24. The motor 24 may be provided.
For example, the motor 24 may be disposed behind the drive transmission unit 25, and an output shaft 24 a protruding forward from the motor 24 may be connected to the drive transmission unit 25. Thus, the slave cylinder 20, the drive transmission unit 25, and the motor 24 may be arranged linearly.

  In the hydraulic pressure generating device 1 of the present embodiment, as shown in FIG. 7, the housing 91 is arranged above the second cylinder hole 21, but the housing 91 may be arranged below the second cylinder hole 21. Good.

Further, as shown in FIG. 10, a heat radiating portion 150 may be formed on the right side surface 101d of the base 100. The heat radiating portion 150 is a metal protrusion formed integrally with the base 100.
In the control board 95 of FIG. 10, an electronic component 96 such as a motor FET or a current detecting resistor is mounted on the front side of the component mounting area 95b of the board main body 95a, and the heat radiating section 150 is mounted on the back side of the component mounting area 95b. Are in contact with each other.
Thus, the heat of the control board 95 can be efficiently transmitted to the base 100 through the radiator 150.

In the hydraulic pressure generating device 1 of the present embodiment, as shown in FIG. 1, the master cylinder 10 is a tandem piston type cylinder, but the master cylinder 10 may be constituted by a single piston type cylinder.
Further, in the hydraulic pressure generating device 1 of the present embodiment, the slave cylinder 20 is a single piston type cylinder, but the slave cylinder 20 may be constituted by a tandem piston type cylinder.

  In the hydraulic pressure generating device 1 of the present embodiment, the master cylinder 10, the stroke simulator 40, the slave cylinder 20, and the hydraulic pressure control device 30 are provided on the base 100, but only the master cylinder 10 and the slave cylinder 20 are provided. May be provided on the base 100.

DESCRIPTION OF SYMBOLS 1 Hydraulic pressure generator 2a 1st main hydraulic pressure path 2b 2nd main hydraulic pressure path 3 Branch hydraulic pressure path 4 Common hydraulic pressure path 5a 1st series passage 5b 2nd communication path 6 First pressure sensor 7 Second pressure sensor 8 Normally closed solenoid valve 10 Master cylinder 11 First cylinder hole 12a Bottom side first piston 12b Open side first piston 16a Bottom side pressure chamber 16b Open side pressure chamber 20 Slave cylinder 21 Second cylinder hole 22 Second piston 24 Motor 24a Output shaft 24b Drive pulley 25 Drive transmission unit 25a Rod 25b Nut member 25c Followed pulley 25d Belt 25e Cover member 26 Pressure chamber 30 Hydraulic pressure control device 31 Inlet valve 32 Outlet valve 40 Stroke simulator 41 Third cylinder hole 42 First Three pistons 44 Lid member 45 Pressure chamber 51 First switching valve 52 Second switching Reference Signs List 61 first shut-off valve 62 second shut-off valve 73 slave cylinder supply path 73a branch supply path 73b check valve 74 return liquid path 80 reservoir tank 90 electronic control unit 91 housing 91a peripheral wall 92 connector for external connection 93 connector for motor connection 94 lid Member (sealing member)
94a heat radiating part 95 control board 95a board main body 95b parts mounting area 96 electronic component 100 base 101 upper part 101d right side surface 102 lower part 103 flange part 103a motor mounting surface 103b drive transmitting part mounting surface 103c insertion hole 105 stud bolt A vehicle brake system B Dashboard BR Wheel brake BP Brake pedal R Rod W Wheel cylinder

Claims (7)

A substrate;
A motor attached to the base,
A master cylinder that generates brake fluid pressure by a first piston connected to a brake operator,
A slave cylinder that generates brake fluid pressure by a second piston that uses the motor as a drive source,
The substrate is
A bottomed first cylinder hole into which the first piston is inserted,
A bottomed second cylinder hole into which the second piston is inserted,
The axis of the first cylinder hole, the axis of the second cylinder hole and the axis of the output shaft of the motor are arranged in parallel ,
The second cylinder hole and the output shaft are disposed on the left and right of a vertical reference plane including the axis of the first cylinder hole,
A plurality of solenoid valves are attached to the first side surface of the base,
The first cylinder hole is open on a second side surface of the base body adjacent to the first side surface,
The hydraulic pressure generator, wherein the solenoid valves are all arranged on one of the upper side and the lower side of the first cylinder hole. A substrate;
A motor attached to the base,
A master cylinder that generates brake fluid pressure by a first piston connected to a brake operator,
A slave cylinder that generates brake fluid pressure by a second piston that uses the motor as a drive source,
The substrate is
A bottomed first cylinder hole into which the first piston is inserted,
A bottomed second cylinder hole into which the second piston is inserted,
The axis of the first cylinder hole, the axis of the second cylinder hole and the axis of the output shaft of the motor are arranged in parallel,
Wherein the first side surface of the base, Rutotomoni plurality of solenoid valves are mounted, and the electronic control device is mounted for controlling the motor,
The first cylinder hole is open on a second side surface of the base body adjacent to the first side surface,
Each of the solenoid valves is collectively arranged on one of the upper side or the lower side than the first cylinder hole ,
An electronic component provided in the electronic control unit is arranged below each of the solenoid valves . The hydraulic pressure generating device according to claim 2 ,
The electronic control unit,
A housing attached to the first side surface of the base;
A control board housed in the housing,
A hydraulic pressure generating device, wherein a heat radiating portion that is in contact with the control board is provided in a sealing member that seals the opening of the housing. The hydraulic pressure generating device according to claim 2 ,
The electronic control unit,
A housing attached to the first side surface of the base;
A control board housed in the housing,
A hydraulic pressure generating device, wherein a heat radiating portion in contact with the control board is provided on the first side surface of the base. The hydraulic pressure generating device according to any one of claims 1 to 4 , wherein
The said 1st cylinder hole and the said 2nd cylinder hole are opening in the said 2nd side surface of the said base | substrate, The hydraulic-pressure generator characterized by the above-mentioned. The hydraulic pressure generator according to any one of claims 1 to 5 , wherein
The hydraulic pressure generating device, wherein the second cylinder hole and the output shaft are disposed below the first cylinder hole. The hydraulic pressure generating device according to any one of claims 1 to 6 , wherein
A stroke simulator for applying a pseudo operation reaction force to the brake operator by the biased third piston,
The base has a bottomed third cylinder hole into which the third piston is inserted,
The axis of the third cylinder hole is arranged in parallel with the axis of the first cylinder hole,
The hydraulic pressure generating device according to claim 1, wherein the first cylinder hole, the second cylinder hole, and the third cylinder hole are opened on the second side surface of the base.

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