JP5249441B2 - Hydraulic control unit - Google Patents

Description

  The present invention relates to a hydraulic pressure control unit that controls brake hydraulic pressure and the like.

As this type of technology, the technology described in Patent Document 1 is disclosed.
In this publication, a control housing in which a control unit to which an acceleration sensor is attached is accommodated and a pump body having a pump driven by a motor are fixed integrally.
JP 2006-56406 A

  However, in the above-described prior art, vibration generated by driving the pump is transmitted to the acceleration sensor, which may cause an error in the output of the acceleration sensor that detects the momentum of the vehicle.

  The present invention has been made paying attention to the above problems, and the object of the present invention is to provide a hydraulic control unit in which a unit having a pump and a unit having a physical quantity sensor for detecting the momentum of the vehicle are integrated. An object of the present invention is to provide a hydraulic control unit capable of suppressing an output error of a physical quantity sensor.

  In order to achieve the above object, at least one of the plurality of mounting portions includes a bracket fixed to the housing, and the housing is elastically fixed to the vehicle via the bracket. When viewed from the direction of the lower surface, the physical quantity sensor is arranged in a polygon formed by virtual lines connecting a plurality of mount portions.

  Therefore, in the present invention, vibrations acting on the physical quantity sensor can be suppressed, so that detection errors occurring in the physical quantity sensor can be suppressed.

1 is a hydraulic circuit diagram of a brake system according to a first embodiment. 3 is a cross-sectional view of a hydraulic pressure control unit according to Embodiment 1. FIG. It is a figure which shows the structure of the piston pump of Example 1. FIG. It is a figure which shows the support structure of the hydraulic-pressure control unit of Example 1. FIG. It is a figure which shows the support structure of the hydraulic-pressure control unit of the modification 1. It is a figure which shows the support structure of the hydraulic-pressure control unit of the modification 2. It is a figure which shows the support structure of the hydraulic-pressure control unit of Example 2. FIG.

  The best mode for realizing the hydraulic control unit and the brake controlling hydraulic unit of the present invention will be described below.

[Configuration of brake piping]
FIG. 1 is a hydraulic circuit diagram of a brake system. In this brake system, the brake fluid pressure is generated by the piston pump 4 driven by the drive of the motor 15 separately from the brake fluid pressure generated in the master cylinder M / C according to the pedaling force input to the brake pedal BP. Can do. This brake fluid pressure is supplied to the wheel cylinder W / C to generate a braking force. Further, this brake system performs hydraulic pressure control according to the required hydraulic pressure of the vehicle dynamics control (hereinafter referred to as VDC) and the anti-lock brake system (hereinafter referred to as ABS) from the controller.

  This brake system has a piping structure called a so-called X pipe, which is composed of two systems, a P system brake hydraulic circuit and an S system brake hydraulic circuit. The left front wheel cylinder W / C (FL) and the right rear wheel wheel cylinder W / C (RR) are connected to the P system, and the right front wheel wheel cylinder W / C (FR) is connected to the S system. ), Wheel cylinder W / C (RL) for the left rear wheel is connected. Each of the P system and the S system is provided with a piston pump 4P and a piston pump 4S. The piston pump 4P and the piston pump 4S are driven by a single motor 15.

  The master cylinder M / C and the hydraulic pressure control unit 1 are connected by a brake pipe 2. The brake pipe 2 is attached to the master cylinder port PMC of the hydraulic pressure control unit 1. The wheel cylinder W / C and the hydraulic pressure control unit 1 are connected by a brake pipe 3. The brake pipe 3 is attached to the wheel cylinder port PWC of the hydraulic pressure control unit 1.

The master cylinder port PMC and the suction side of the piston pump 4 are connected by an oil passage 5. A gate-in valve 6 that is a normally closed solenoid valve is provided on the oil passage 5.
The discharge side of the piston pump 4 and the wheel cylinder port PWC are connected by an oil passage 7. On each oil passage 7, a pressure increasing valve 8 which is a normally open solenoid valve corresponding to the wheel cylinder W / C is provided.

  The master cylinder M / C and the oil passage 7 are connected by an oil passage 9, and the oil passage 7 and the oil passage 9 merge between the piston pump 4 and the pressure increasing valve 8. A gate-out valve 10 that is a normally open solenoid valve is provided on the oil passage 9.

A reservoir 11 is provided on the suction side of the piston pump 4. The reservoir 11 and the piston pump 4 are connected by an oil passage 12.
The wheel cylinder W / C and the reservoir 11 are connected by an oil passage 13. The oil passage 13 is provided with a pressure reducing valve 14 which is a normally closed solenoid valve. The gate-in valve 6, the gate-out valve 10, the pressure increasing valve 8, and the pressure reducing valve 14 correspond to the electromagnetic valve of the third invention.

[Configuration of hydraulic unit]
FIG. 2 is a cross-sectional view of the hydraulic pressure control unit 1. The hydraulic pressure control unit 1 includes a housing unit HU to which a piston pump 4, a gate-in valve 6, a gate-out valve 10, a pressure-increasing valve 8 and a pressure-reducing valve 14 are attached, a motor 15, a gate-in valve 6, a gate-out valve 10, and an increase. The motor 15 includes a control housing CH having a control board CB for controlling the pressure valve 8 and the pressure reducing valve 14 and the like.

  A piston pump 4, a gate-in valve 6, a gate-out valve 10, a pressure increasing valve 8, and a pressure reducing valve 14 are fixed to the housing unit HU by caulking. A motor 15 is fixed to the side surface HU1 of the housing unit HU. A control housing CH is fixed to a side surface HU2 that is the side surface opposite to the side surface HU1. A wheel cylinder port PWC is provided on the upper surface HU3 (upper side in the figure) when the housing unit HU is mounted on the vehicle. A master cylinder port PMC is provided on the side surface HU4 at the top of the side surface HU1 of the housing unit HU.

  The control housing CH has a support plate portion CH1 for supporting a yoke 21 to which a coil 20 for driving a gate-in valve 6, a gate-out valve 10, a pressure-increasing valve 8, and a pressure-reducing valve 14 is attached and a control board CB. A coil 20 and a yoke 21 are supported on the housing unit HU side when the support plate portion CH1 is fixed to the housing unit HU. A control board CB is supported on the side of the support plate portion CH1 opposite to the housing unit HU. A control cover CH2 that seals the opening on the side of the support plate CH1 to which the control board CB is attached is fixed. A vehicle momentum detector 22 is attached to the control board CB. The vehicle momentum detection unit 22 includes a longitudinal acceleration sensor, a lateral acceleration sensor, and a yaw rate sensor.

[Configuration of piston pump]
3A and 3B are diagrams showing the configuration of the piston pump 4, wherein FIG. 3A is a diagram viewed from the axial direction of the piston pump 4, and FIG. 3B is a partial sectional view of the piston pump 4 in the axial direction.

The piston pump 4 is provided in the housing unit HU. The piston pump 4 includes a cam 40 attached to the shaft 43 of the motor 15 and a piston 42 that moves in the cylinder 41 in the axial direction by the cam 40.
The cam 40 is attached to the shaft 43 of the motor 15 in an eccentric state. The piston 42 moves in the axial direction as the cam 40 rotates to supply brake fluid to the wheel cylinder W / C side.

[Hydrostatic control unit support structure]
4A and 4B are diagrams showing the support structure of the hydraulic pressure control unit 1, wherein FIG. 4A is a diagram viewed from the axial direction of the piston pump 4, and FIG. 4B is a diagram viewed from the bottom when the vehicle is mounted. In addition, in FIG.4 (b), it is a figure of the state in which the 1st bracket 31 mentioned later is not attached. Further, although the vehicle momentum detecting unit 22 is housed in the control cover CH2 of the control housing CH, for the sake of explanation, the vehicle momentum detecting unit 22 is illustrated so that the position of the vehicle momentum detecting unit 22 can be understood.

  The hydraulic control unit 1 is supported on the vehicle body 30 by a first bracket 31 and a second bracket 32. The first bracket 31 is substantially L in side view by two vertical wall portions 31a formed along the side surface HU1 of the housing unit HU and a horizontal wall portion 31b formed along the lower surface HU5 of the housing unit HU. It is formed in a letter shape. Further, the first bracket 31 is formed with a flange portion 31c that extends downward from the lateral wall portion 31b and then extends outward. The first bracket 31 is fixed to the vehicle body 30 by welding or fastening at the flange portion 31c. The hydraulic pressure control unit 1 is elastically fixed to the side surface HU1 via a resin mount rubber 33 in the first mount portion 31d at the upper end portion of the vertical wall portion 31a. The hydraulic control unit 1 is supported in the direction of the axis L of the motor 15 in the first mount portion 31d.

  The second bracket 32 is formed by an upper step portion 32a formed along the shape of the lower surface HU5 of the housing unit HU, and a lower step portion 32b extending downward from the upper step portion 32a and then extending outward. . The upper stage portion 32a is fixed to the lower surface HU5 of the housing unit HU. The second mount portion 32c at the end portion of the lower step portion 32b is elastically fixed to the lateral wall portion 31b of the first bracket 31 via a resin mount rubber 34. At this time, the 2nd bracket 32 is being fixed in the edge part on the opposite side to the vertical wall part 31a of the horizontal wall part 31b. Further, the hydraulic pressure control unit 1 is supported by the second mount portion 32c in a direction orthogonal to the support direction of the first mount portion 31d.

  The brake pipe 2 is connected to the master cylinder port PMC of the hydraulic pressure control unit 1, and the brake pipe 3 is connected to the wheel cylinder port PWC. Since the brake pipe 2 and the brake pipe 3 are steel pipes, the position of the hydraulic pressure control unit 1 with respect to the master cylinder M / C and the wheel cylinder W / C is fixed. Therefore, the brake pipe 2 and the brake pipe 3 are also supported.

(Position relationship of momentum detection unit)
Next, the positional relationship of the momentum detection unit will be described in detail.
The vehicle momentum detection unit 22 is disposed above the position of the axis of the piston pump 4 with respect to the vertical direction in the hydraulic control unit 1 (the same as the axis L of the motor 15 in the vertical direction).

  The vehicle momentum detection unit 22 is within a triangle formed by a virtual line VL connecting the first mount portion 31d and the second mount portion 32c with the hydraulic pressure control unit 1 viewed from the bottom when mounted on the vehicle. Are arranged on the axis L of the motor 15. Further, the piston pump 4 and the center of gravity G are also arranged in a triangle formed by a virtual line VL connecting the first mount portion 31d and the second mount portion 32c, and the vehicle momentum detecting unit 22 is connected to the center of gravity G and the second mount portion 32c. Or between the piston pump 4 and the second mount portion 32c.

[Operation by Configuration of Example 1]
The hydraulic control unit 1 is configured by integrally fixing a motor 15, a housing unit HU, and a control housing CH. Therefore, vibration due to driving of the motor 15 and the piston pump 4 is also transmitted to the vehicle momentum detection unit 22, and a detection error may occur in the vehicle momentum detection unit 22.

  Further, the control board CB is accommodated in the control cover CH2, and the motor 15 is attached to the opposite side to which the control housing CH is attached to the housing unit HU. Since the motor 15 is heavier than the control housing CH, the center of gravity G of the hydraulic pressure control unit 1 is on the motor 15 side. Therefore, the position of the vehicle momentum detection unit 22 is located far from the center of gravity G, and the displacement amount of the vibration caused by driving the motor 15 and the piston pump 4 is transmitted to the vehicle momentum detection unit 22 with a detection error. May grow.

  Therefore, in the first embodiment, the vehicle momentum detection unit 22 is disposed on the axis L of the motor 15 in a state where the hydraulic control unit 1 is viewed from the lower surface when the vehicle is mounted. Therefore, since the displacement of the vibration by the piston pump 4 acts on the vehicle momentum detection unit 22 evenly, it becomes easy to predict the vibration acting on the vehicle momentum detection unit 22, and the output accuracy of the vehicle momentum detection unit 22 is improved. be able to.

  Further, the hydraulic pressure control unit 1 of the first embodiment is provided with a wheel cylinder port PWC on the upper surface HU3 (upper side in the drawing) when the housing unit HU is mounted on the vehicle, and on the side surface HU4 on the upper side of the side surface HU1. Port PMC is provided. Since the steel cylinder brake pipe 2 and the brake pipe 3 are connected to the wheel cylinder port PWC and the master cylinder port PMC, the hydraulic pressure control unit 1 is also supported by the brake pipe 2 and the brake pipe 3, and vibrations are generated. Is above the center of gravity G.

  Therefore, in the first embodiment, the vehicle momentum detecting unit 22 is arranged above the position of the axis of the piston pump 4 in the vertical direction in the hydraulic pressure control unit 1. Therefore, the displacement of the vibration acting on the vehicle momentum detection unit 22 can be suppressed.

Further, the piston pump 4 is disposed in a triangle formed by a virtual line VL connecting the first mount portion 31d and the second mount portion 32c in a state where the hydraulic pressure control unit 1 is viewed from the lower surface when the vehicle is mounted. The vehicle momentum detection unit 22 is disposed between 4 and the second mount unit 32c.
Therefore, the vibration of the piston pump 4 can be suppressed by the first mount portion 31d and the second mount portion 32c, and the vibration acting on the vehicle momentum detecting portion 22 can be suppressed.

In addition, the center of gravity G is arranged in a triangle formed by a virtual line VL connecting the first mount portion 31d and the second mount portion 32c, and the vehicle momentum detecting portion 22 is disposed between the center of gravity G and the second mount portion 32c. Arranged.
Therefore, the vibration of the hydraulic pressure control unit 1 can be suppressed, and the vibration acting on the vehicle momentum detection unit 22 can also be suppressed.

[Modification 1]
FIG. 5 is a modification of the hydraulic control unit 1 according to the first embodiment. In the first embodiment, there is one second mount portion 32c. However, in the first modification, the second mount portion 32c is different from the first embodiment in that two second mount portions 32c are provided.

  The second bracket 32 is formed by an upper step portion 32a formed along the shape of the lower surface HU5 of the housing unit HU, and a lower step portion 32b extending downward from the upper step portion 32a and then extending outwardly into two forks. Has been. The upper stage portion 32a is fixed to the lower surface HU5 of the housing unit HU. The second mount portion 32c at the end of the lower step portion 32b is fixed to the lateral wall portion 31b of the first bracket 31 via the mount rubber 34. At this time, the 2nd bracket 32 is being fixed in the edge part on the opposite side to the vertical wall part 31a of the horizontal wall part 31b. Moreover, in the 2nd mount part 32c, the hydraulic control unit 1 is supported in the direction orthogonal to the support direction of the 1st mount part 31d.

[Modification 2]
FIG. 6 is a modification of the hydraulic control unit 1 according to the first embodiment. In the first embodiment, the hydraulic control unit 1 is supported by the two brackets of the first bracket 31 and the second bracket 32. However, in the second modification, the hydraulic control unit 1 is supported by one bracket 35. This is different from the first embodiment. In the first embodiment, the hydraulic pressure control unit 1 is supported in the direction of the axis L of the motor 15 in the first mount portion 31d, and the hydraulic pressure control unit 1 is supported in the first mount portion 31d in the second mount portion 32c. Although it supports in the direction orthogonal to a support direction, in the modification 2, the hydraulic pressure control unit 1 is supported in the direction of the axis L of the motor 15 in the 1st mount part 35d and the 2nd mount part 35e. Different from the first embodiment.

  The hydraulic control unit 1 is supported on the vehicle body 30 by a bracket 35. The bracket 35 includes two first vertical wall portions 35b formed along the side surface HU1 of the housing unit HU, a horizontal wall portion 31b formed along the lower surface HU5 of the housing unit HU, and a control of the control housing CH. The second vertical wall portion 35c formed along the cover CH2 is formed in a substantially U shape in a side view. The lateral wall portion 35a is fixed to the vehicle body 30 by welding or fastening. The hydraulic pressure control unit 1 is fixed to the side surface HU1 via the mount rubber 33 in the first mount portion 35d at the upper end portion of the first vertical wall portion 35b. The hydraulic pressure control unit 1 is fixed to the side surface HU2 via the mount rubber 34 in the second mount portion 35e at the upper end portion of the second vertical wall portion 35c. The hydraulic control unit 1 is supported in the direction of the axis L of the motor 15 by the first mount portion 35d and the second mount portion 35e.

[Effect of Example 1]
Next, effects of Example 1 are listed below.
(1) The piston pump 4 is housed in the housing unit HU having two opposed surfaces, the motor 15 fixed to one side surface of the housing unit HU and rotating the piston pump 4 by the shaft 43, and the housing unit HU. A control board CB that is disposed on the other side and controls the motor 15, a control cover CH2 that covers the control board CB, a vehicle momentum detector 22 that detects the momentum of the vehicle fixed integrally to the control board CB, and a housing unit A first mount portion 31d and a second mount portion 32c for elastically fixing the HU to the vehicle are provided, and the housing unit HU and the control cover CH2 occupy between the first mount portion 31d and the second mount portion 32c. The vehicle momentum detecting unit 22 is disposed in the area to be operated.
Therefore, since it becomes possible to suppress the vibration which acts on the vehicle momentum detection unit 22 due to the operation of the hydraulic pressure control unit 1, it is possible to suppress the detection error generated in the vehicle momentum detection unit 22.

(2) The piston pump 4 provided with the cam 40 fixed to the shaft of the motor 15 and the piston 42 that reciprocates by the cam 40 was used as the pump.
Since the piston pump 4 generates vibration in the axial direction, it is easy to predict vibration and the output accuracy of the physical quantity sensor can be improved.

  (3) A steel pipe brake pipe 2 is connected to the master cylinder port PMC on the upper surface of the housing unit HU, and a steel pipe brake pipe 3 is connected to the wheel cylinder port PWC. The vehicle momentum detection unit 22 is disposed on the upper surface side of the vehicle.

  Since the brake pipe 2 and the brake pipe 3 are steel pipes, the position of the hydraulic pressure control unit 1 with respect to the master cylinder M / C and the wheel cylinder W / C is fixed. Therefore, the brake pipe 2 and the brake pipe 3 are also supported. Therefore, the fulcrum of vibration of the hydraulic pressure control unit 1 is on the upper surface side of the housing unit HU with respect to the axis of the piston pump 4, and the displacement of vibration acting on the vehicle momentum detection unit 22 can be suppressed.

(4) The piston pump 4 is arranged in a triangle formed by a virtual line VL connecting the first mount portion 31d and the second mount portion 32c in a state where the hydraulic pressure control unit 1 is viewed from the lower surface when the vehicle is mounted. The vehicle momentum detecting unit 22 is disposed between the piston pump 4 and the second mount unit 32c.
Therefore, the vibration of the piston pump 4 can be suppressed by the first mount portion 31d and the second mount portion 32c, and the vibration acting on the vehicle momentum detecting portion 22 can be suppressed.

  (5) Two first mount portions 31d having support shafts in the axial direction of the motor 15 on the mounting side surface HU1 of the motor 15 of the housing unit HU, and the second bracket 32 extending from the lower surface of the housing unit HU are first. One second mount portion 32c having a support shaft orthogonal to the support shaft of the mount portion 31d is provided.

  Therefore, the vehicle momentum detection unit 22 can be arranged in a polygon formed by an imaginary line connecting the two first mount portions 31d and the second mount portion 32c, and vibration acting on the physical quantity sensor can be detected. Since it becomes possible to suppress, the detection error of the vehicle momentum detection part 22 can be suppressed. Further, vibration in the motor axis direction can be suppressed by the first mount portion 31d, and vibration in the direction orthogonal to the motor axis line can be suppressed by the second mount portion 32c, so that detection error of the vehicle momentum detection unit 22 is suppressed. be able to.

(6) The gravity center line of gravity of the hydraulic pressure control unit 1 is arranged between the first mount portion 31d and the second mount portion 32c.
Therefore, since the center of gravity of the hydraulic pressure control unit 1 can be supported by the first mount portion 31d and the second mount portion 32c, the vibration of the hydraulic pressure control unit 1 is suppressed and the detection error of the vehicle momentum detection portion 22 is detected. Can be suppressed.

(7) The vehicle momentum detection unit 22 is disposed on the axis L of the motor 15 in a state where the hydraulic pressure control unit 1 is viewed from the lower surface when the vehicle is mounted.
Therefore, since the displacement of the vibration caused by the pump acts on the vehicle momentum detecting unit 22 evenly, it is easy to predict the vibration acting on the vehicle momentum detecting unit 22, and the output accuracy of the vehicle momentum detecting unit 22 can be improved. it can.

(8) In the hydraulic pressure control unit described in (f) above,
The vehicle momentum detector 22 is disposed between the gravity center line of gravity of the hydraulic pressure control unit 1 and the second mount 32c.
Therefore, it is possible to suppress the vibration of the hydraulic pressure control unit 1 and to suppress the detection error of the vehicle momentum detection unit 22.

(9) The hydraulic pressure control unit 1 is for vehicle brake control means, has a housing unit HU, and a piston pump 4 for controlling the brake fluid of the wheel cylinder W / C of the vehicle in the housing unit HU. A motor 15 fixed to one side of the housing unit HU for driving the piston pump 4, a control board CB arranged on the other side of the housing unit HU for controlling the motor 15, and fixed integrally to the control board CB. A vehicle momentum detector 22 for detecting the momentum of the vehicle, a first mount portion 31d and a second mount portion 32c for elastically fixing the housing unit HU to the vehicle, and a control cover CH2 for covering the control board CB together with the housing unit HU. And the vehicle momentum detecting unit 22 is between the first mount unit 31d and the second mount unit 32c, and the housing unit HU and control cover CH2 is provided with the first bracket 31 and second bracket 32 supporting the housing unit HU to lie within the region occupied.
Therefore, since it becomes possible to suppress the vibration which acts on the vehicle momentum detection unit 22 due to the operation of the hydraulic pressure control unit 1, it is possible to suppress the detection error generated in the vehicle momentum detection unit 22.

(10) A housing unit HU, a motor 15 that rotationally drives the piston pump 4 fixed to the housing unit HU and built in the housing unit HU, a gate-in valve 6 that controls the brake fluid pressure, a gate-out valve 10, and a pressure increase A control board CB for controlling the valve 8, the pressure reducing valve 14, the motor 15, the gate-in valve 6, the gate-out valve 10, the pressure increasing valve 8 and the pressure reducing valve 14, and a control cover CH2 covering the control board CB together with the housing unit HU The vehicle momentum detecting unit 22 having a yaw rate sensor that detects the momentum of the vehicle integrally fixed to the control board CB, and the first mount portion 31d and the second mount portion 32c that elastically fix the housing unit HU to the vehicle. The vehicle momentum detection unit 22 includes a first mount 31d and a second mount. The housing unit HU was supported so as to be within the region occupied by the housing unit HU and the control cover CH2 between the portion 32c.
Therefore, since it becomes possible to suppress the vibration which acts on the vehicle momentum detection unit 22 due to the operation of the hydraulic pressure control unit 1, it is possible to suppress the detection error generated in the vehicle momentum detection unit 22.

The configuration of the second embodiment will be described. About the same structure as Example 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.
FIG. 7 is a diagram illustrating a support structure of the hydraulic pressure control unit 1 according to the second embodiment, and is a diagram viewed in the axial direction of the piston pump 4.

  In Example 1, steel pipes were used as the brake pipes 2 and 3, but in Example 2, a displaceable flexible hose was used as the brake pipes 2 and 3. In the first embodiment, the vehicle momentum detecting unit 22 is disposed above the position of the axis of the piston pump 4 with respect to the vertical direction in the hydraulic pressure control unit 1. On the other hand, in the second embodiment, the vehicle momentum detection unit 22 is disposed below the position of the axis of the piston pump 4 with respect to the vertical direction in the hydraulic pressure control unit 1.

[Operation by Configuration of Example 2]
In the hydraulic pressure control unit 1 according to the second embodiment, the wheel cylinder port PWC is provided on the upper surface HU3 (upper side in the figure) when the housing unit HU is mounted on the vehicle, and the master cylinder port is provided on the upper side surface HU4 of the side surface HU1. PMC is provided. Since the brake pipe 2 and the brake pipe 3 of the flexible hose are connected to the wheel cylinder port PWC and the master cylinder port PMC, the hydraulic pressure control unit 1 is not supported by the brake pipe 2 and the brake pipe 3. Therefore, the fulcrum of vibration is below the center of gravity G.

  Therefore, in the second embodiment, the vehicle momentum detecting unit 22 is disposed below the axis position of the piston pump 4 with respect to the vertical direction in the hydraulic pressure control unit 1. Therefore, the displacement of the vibration acting on the vehicle momentum detection unit 22 can be suppressed.

[Effect of Example 2]
Next, effects of Example 2 are listed below.

  (11) A flexible hose brake pipe 2 is connected to the master cylinder port PMC on the upper surface of the housing unit HU, and a flexible hose brake pipe 3 is connected to the wheel cylinder port PWC. A vehicle momentum detection unit 22 is disposed on the lower surface side of the unit HU.

  The hydraulic pressure control unit is not supported because the brake piping is a flexible hose, and the vibration fulcrum is below the center of gravity of the hydraulic pressure control unit, so it is possible to suppress the input of vibration to the physical quantity sensor. The detection error of the physical quantity sensor can be suppressed.

[Other embodiments]
As mentioned above, although this invention has been demonstrated based on Example 1 and Example 2, the concrete structure of each invention is not limited to each Example, The design change etc. of the range which does not deviate from the summary of invention Is included in the present invention.

DESCRIPTION OF SYMBOLS 1 Hydraulic control unit 2, 3 Brake piping 4 Piston pump 15 Motor 20 Coil 22 Vehicle momentum detection part 31 1st bracket 31d 1st mount part 32 2nd bracket 32c 2nd mount part 33 Mount rubber 34 Mount rubber 35 Bracket 35d 1st 1 mount portion 35e second mount portion 40 cam 43 shaft
CB control board
CH control housing
CH2 control cover
M / C master cylinder
HU housing unit
VL virtual line
W / C wheel cylinder

Claims (1)

A housing with a built-in pump and two opposing faces;
A motor fixed to one of the two surfaces and driving the pump to rotate by a motor shaft;
A control unit disposed on the other side of the two surfaces to control the motor;
A cover portion covering the control portion;
A physical quantity sensor for detecting the momentum of the vehicle fixed integrally to the control unit;
A plurality of mounts for elastically fixing the housing to the vehicle;
With
At least one of the plurality of mount portions includes a bracket fixed to the housing, and elastically fixes the housing to the vehicle via the bracket,
The hydraulic unit, wherein the physical quantity sensor is arranged in a polygon formed by an imaginary line connecting the plurality of mount portions when the housing is viewed from a lower surface when mounted on a vehicle.

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