JP7262213B2 - Brake fluid pressure controller - Google Patents

Description

The present invention relates to a brake fluid pressure control device for vehicles.

2. Description of the Related Art A brake fluid pressure control device is known for performing an antilock brake operation in a vehicle brake system. This brake fluid pressure control device adjusts the braking force generated in the wheels by increasing or decreasing the pressure of the brake fluid in the brake fluid circuit while the passenger of the vehicle is operating the input part such as the brake lever. . In such a brake fluid pressure control device, there are units such as a flow path constituting a part of the brake fluid circuit, a pump device for increasing the pressure of the brake fluid in the brake fluid circuit, and a control device for controlling the pump device. (See Patent Document 1, for example).

Specifically, the unitized brake fluid pressure control device controls the base body in which the brake fluid flow path is formed, the motor that drives the pump device provided in the brake fluid flow path, and the motor. and a housing for accommodating the control board. A base body of the brake fluid pressure control device has a substantially rectangular parallelepiped shape, and a housing is attached to one surface thereof. At this time, the base and the housing are fixed using a plurality of male screws. Here, the surface of the substrate to which the housing is attached is defined as the first surface. In addition, the surface of the substrate opposite to the first surface is referred to as the second surface. When the first surface and the second surface are defined in this way, in the conventional brake fluid pressure control device, the motor for driving the pump device is attached to the second surface of the base body.

JP 2014-015077 A

The following two methods are conceivable when fixing the base body and the housing using male screws. The first method is to insert each male screw from the base side to the housing side and fasten each male screw to the housing. The second method is to insert each male screw into the base from the housing side and fasten each male screw to the base.

When each male screw is inserted from the base side to the housing side to fix the base body and the housing, a plurality of through holes into which the male screws are inserted are formed in the base body. These through holes are formed so as to penetrate from the second surface to the first surface. Then, a male screw is inserted from the second surface side into each of the through holes formed in the base body, and the male screw forming portion of each male screw and the housing are fastened. As a result, the base is sandwiched between the heads of the male screws arranged on the second surface and the housing, and the base and the housing are fixed. Here, as described above, in the conventional brake hydraulic pressure control device, the motor for driving the pump device is attached to the second surface of the base body. Therefore, in practice, it is very difficult to secure a space for arranging the heads of the male screws on the second surface of the base. Therefore, in the conventional brake fluid pressure control device, each male screw is inserted from the housing side to the base body side to fix the base body and the housing.

When each male screw is inserted from the housing side to the base body side to fix the base body and the housing, a plurality of through holes into which the male screws are inserted are formed in the housing. Then, a male screw is inserted into each of the through holes formed in the housing, and the male screw forming portion of each male screw and the base are fastened. Here, as described above, the housing accommodates the control board. For this reason, when inserting each male screw from the housing side to the base body side and fixing the base body and the housing, each male screw passing through the housing and the control board must be secured in the housing so that they do not interfere with each other. It is necessary to install the control board while avoiding Therefore, the conventional brake fluid pressure control device has a problem that the installation space for the control board is reduced in the housing.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a brake fluid pressure control device for a vehicle that can secure a larger installation space for a control board in a housing than before. .

A brake fluid pressure control device according to the present invention includes a base body in which a brake fluid flow path is formed, a motor that drives a pump device provided in the flow path, and a control board of a control device that controls the motor. and a housing that houses the control board, and a plurality of male screws that fix the base and the housing, wherein the motor is mounted on the base and the housing. A plurality of through-holes into which the male screws are inserted are formed in the base body, and each of the male screws is inserted into the through-holes and attached to the housing. has been concluded.

In the brake fluid pressure control device according to the present invention, a motor for driving a pump device is arranged in a space surrounded by a base body and a housing. Therefore, a space for arranging the heads of the male screws can be secured on the surface of the base opposite to the surface on which the housing is attached. Therefore, the base and the housing can be fixed by inserting each male screw from the base side to the housing side. Therefore, in the brake fluid pressure control device according to the present invention, each male screw does not need to pass through the housing. Therefore, in the brake fluid pressure control device according to the present invention, when the control board is installed in the housing, the control board can be arranged in the space that interferes with the male screw in the conventional art. Therefore, the brake hydraulic pressure control device according to the present invention can ensure a larger installation space for the control board in the housing than in the conventional case.

It is a figure showing composition of vehicles by which a brake system concerning an embodiment of the invention is carried. It is a figure showing composition of a brake system concerning an embodiment of the invention. 1 is a perspective view showing a unitized portion of a brake fluid pressure control device according to an embodiment of the present invention; FIG. 1 is a partial cross-sectional view of a unitized portion of a brake fluid pressure control device according to an embodiment of the present invention, viewed from the side; FIG.

A brake fluid pressure control device for a vehicle according to the present invention will be described below with reference to the drawings.
Although a case where the brake hydraulic pressure control device according to the present invention is employed in a motorcycle will be described below, the brake hydraulic pressure control device according to the present invention may be employed in vehicles other than motorcycles. . Vehicles other than motorcycles include, for example, bicycles, tricycles, and four-wheeled motor vehicles that are driven by at least one of an engine and an electric motor. A bicycle generally means a vehicle that can be propelled on a road by means of pedaling force applied to pedals. In other words, bicycles include ordinary bicycles, electrically assisted bicycles, electric bicycles, and the like. Motorcycles or tricycles mean so-called motorcycles, and motorcycles include motorcycles, scooters, electric scooters, and the like. Further, although the case where the brake hydraulic pressure control device has two hydraulic circuits is described below, the number of hydraulic circuits of the brake hydraulic pressure control device is not limited to two. The brake hydraulic pressure control device may have only one hydraulic circuit, or may have three or more hydraulic circuits.

Also, the configuration, operation, etc., described below are merely examples, and the brake fluid pressure control device according to the present invention is not limited to such configuration, operation, and the like. Further, in each drawing, the same or similar members or portions may be denoted by the same reference numerals or may be omitted. In addition, detailed structures are simplified or omitted as appropriate.

Embodiment.
A vehicle brake system including a brake fluid pressure control device according to the present embodiment will be described below.

<Configuration and Operation of Vehicle Brake System>
The configuration and operation of the brake system according to this embodiment will be described.
FIG. 1 is a diagram showing the configuration of a vehicle equipped with a brake system according to an embodiment of the invention. FIG. 2 is a diagram showing the configuration of the brake system according to the embodiment of the invention.

As shown in FIGS. 1 and 2, the braking system 10 is mounted on a vehicle 100, for example a motorcycle. A vehicle 100 includes a body 1, a handle 2 rotatably held by the body 1, a front wheel 3 rotatably held by the body 1 together with the handle 2, and a body 1 rotatably held. a rear wheel 4;

The brake system 10 includes a brake lever 11, a first hydraulic circuit 12 filled with brake fluid, a brake pedal 13 and a second hydraulic circuit 14 filled with brake fluid. A brake lever 11 is provided on the handle 2 and is manually operated by the user. The first hydraulic circuit 12 causes the rotor 3a that rotates together with the front wheel 3 to generate a braking force corresponding to the amount of operation of the brake lever 11. As shown in FIG. A brake pedal 13 is provided at the lower portion of the body 1 and is operated by the user's foot. The second hydraulic circuit 14 causes the rotor 4 a that rotates together with the rear wheel 4 to generate a braking force corresponding to the amount of operation of the brake pedal 13 .

Note that the brake lever 11 and the brake pedal 13 are an example of a brake input portion. For example, a brake pedal different from the brake pedal 13 provided on the body 1 may be employed as a brake input portion instead of the brake lever 11 . Further, for example, a brake lever different from the brake lever 11 provided on the handle 2 may be employed as a brake input portion instead of the brake pedal 13 . In addition, the first hydraulic circuit 12 is applied to the rotor 4a that rotates together with the rear wheel 4, depending on the amount of operation of the brake lever 11 or the amount of operation of a brake pedal other than the brake pedal 13 provided on the body 1. It may be one that produces a corresponding braking force. In addition, the second hydraulic circuit 14 applies pressure to the rotor 3a that rotates together with the front wheel 3 according to the amount of operation of the brake pedal 13 or the amount of operation of a brake lever other than the brake lever 11 provided on the steering wheel 2. It may be something that produces a braking force.

The first hydraulic circuit 12 and the second hydraulic circuit 14 have the same configuration. Therefore, the configuration of the first hydraulic circuit 12 will be described below as a representative.
The first hydraulic circuit 12 has a master cylinder 21 containing a piston (not shown), a reservoir 22 attached to the master cylinder 21, and a brake pad (not shown) held by the body 1. and a wheel cylinder 24 that operates the brake pads (not shown) of the brake caliper 23 .

In the first hydraulic circuit 12 , the master cylinder 21 and the wheel cylinder 24 are fluid pipes connected between the master cylinder 21 and the master cylinder port MP formed in the base 70 . Communicate via the passage 25 and the liquid pipe connected between the wheel cylinder 24 and the wheel cylinder port WP formed in the base 70 . Further, the sub-flow path 26 is formed in the base 70 . The brake fluid in the wheel cylinder 24 is released through the secondary flow path 26 to a main flow path midway portion 25a, which is the middle portion of the main flow path 25. As shown in FIG. Further, the pressure increasing flow path 27 is formed in the base body 70 . The brake fluid in the master cylinder 21 is supplied through the pressure-increasing flow path 27 to a sub-flow path intermediate portion 26a that is a middle portion of the sub-flow path 26 .

An inlet valve 28 is provided in a region of the main flow passage 25 closer to the wheel cylinder 24 than the middle portion 25a of the main flow passage. The opening/closing operation of the inlet valve 28 controls the flow rate of the brake fluid flowing through this area. An outlet valve 29 and an accumulator 30 for storing brake fluid are provided in an upstream region of the sub-flow path intermediate portion 26a of the sub-flow path 26 in this order from the upstream side. The opening/closing operation of the outlet valve 29 controls the flow rate of the brake fluid flowing through this area. In addition, a pump device 31 is provided in a region of the sub-channel 26 on the downstream side of the sub-channel intermediate portion 26a. A switching valve 32 is provided in a region of the main flow passage 25 closer to the master cylinder 21 than the middle portion 25a of the main flow passage. The opening/closing operation of the switching valve 32 controls the flow rate of the brake fluid flowing through this area. A pressure-increasing valve 33 is provided in the pressure-increasing flow path 27 . The opening/closing operation of the pressure-increasing valve 33 controls the flow rate of the brake fluid flowing through the pressure-increasing flow path 27 .

A master cylinder hydraulic pressure sensor 34 for detecting the hydraulic pressure of the brake fluid in the master cylinder 21 is provided in a region of the main flow passage 25 closer to the master cylinder 21 than the switching valve 32 . A wheel cylinder hydraulic pressure sensor 35 for detecting the hydraulic pressure of the brake fluid in the wheel cylinder 24 is provided in a region of the main flow passage 25 closer to the wheel cylinder 24 than the inlet valve 28 .

That is, the main flow path 25 communicates the master cylinder port MP and the wheel cylinder port WP via the inlet valve 28 . Further, the sub-flow path 26 is a flow path defined as part or all of the flow path for releasing the brake fluid of the wheel cylinder 24 to the master cylinder 21 via the outlet valve 29 . Further, the pressure increasing flow path 27 is defined as part or all of the flow path that supplies the brake fluid of the master cylinder 21 to the upstream side of the pump device 31 in the sub flow path 26 via the pressure increasing valve 33. flow path.

The inlet valve 28 is, for example, an electromagnetic valve that switches the flow of the brake fluid at its installation location from open to closed when it becomes energized from a non-energized state. The outlet valve 29 is, for example, an electromagnetic valve that switches from closed to open flow of the brake fluid toward the intermediate portion 26a of the sub-flow path via its installation location when it is switched from a non-energized state to an energized state. The switching valve 32 is, for example, an electromagnetic valve that switches the flow of the brake fluid at its installation location from open to closed when it is switched from a non-energized state to an energized state. The pressure-increasing valve 33 is, for example, an electromagnetic valve that switches from closed to open flow of the brake fluid toward the intermediate portion 26a of the sub-flow path via its installation location when it is switched from a non-energized state to an energized state.

The pump device 31 of the first hydraulic circuit 12 and the pump device 31 of the second hydraulic circuit 14 are driven by a common motor 40 .

Base 70 and each member provided on base 70 (inlet valve 28, outlet valve 29, accumulator 30, pump device 31, switching valve 32, pressure increasing valve 33, master cylinder hydraulic pressure sensor 34, wheel cylinder hydraulic pressure sensor 35, motor 40, etc.) and a control device (ECU) 50 constitute a brake fluid pressure control device 60. FIG.

The control device 50 may be one, or may be divided into a plurality. Also, the control device 50 may be attached to the base 70 or may be attached to a member other than the base 70 . In addition, part or all of the control device 50 may be composed of, for example, a microcomputer, a microprocessor unit, or the like, or may be composed of an updateable device such as firmware, or may be configured to receive commands from a CPU or the like. It may be a program module or the like executed by. As will be described later, in the brake fluid pressure control device 60 according to the present embodiment, at least part of the control device 50 is configured with the control board 51 .

For example, in a normal state, the control device 50 controls the inlet valve 28, the outlet valve 29, the switching valve 32, and the pressure increasing valve 33 to be in a non-energized state. In this state, when the brake lever 11 is operated, in the first hydraulic circuit 12, the piston (not shown) of the master cylinder 21 is pushed in, the hydraulic pressure of the brake fluid in the wheel cylinder 24 increases, and the brake caliper 23 brake pad (not shown) is pressed against the rotor 3a of the front wheel 3, and the front wheel 3 is braked. Further, when the brake pedal 13 is operated, in the second hydraulic circuit 14, the piston (not shown) of the master cylinder 21 is pushed in, the hydraulic pressure of the brake fluid in the wheel cylinder 24 increases, and the brake caliper 23 brakes. A pad (not shown) is pressed against the rotor 4a of the rear wheel 4 so that the rear wheel 4 is braked.

The output of each sensor (master cylinder hydraulic pressure sensor 34, wheel cylinder hydraulic pressure sensor 35, wheel speed sensor, acceleration sensor, etc.) is input to the control device 50 . The control device 50 outputs commands governing the operations of the motor 40, each valve, etc. according to the output thereof, and executes a pressure reduction control operation, a pressure increase control operation, and the like.

For example, when the hydraulic pressure of the brake fluid in the wheel cylinders 24 of the first hydraulic circuit 12 is excessive or is likely to be excessive, the control device 50 controls the amount of brake fluid in the wheel cylinders 24 of the first hydraulic circuit 12. Take action to reduce hydraulic pressure. At this time, in the first hydraulic circuit 12, the control device 50 controls the inlet valve 28 to be energized, the outlet valve 29 to be energized, the switching valve 32 to be non-energized, and the pressure boost valve 33 is controlled to be in a non-energized state, the motor 40 is driven. In addition, the control device 50 controls the amount of brake fluid in the wheel cylinders 24 of the second hydraulic circuit 14 when the hydraulic pressure of the brake fluid in the wheel cylinders 24 of the second hydraulic circuit 14 is excessive or when there is a possibility that the hydraulic pressure is excessive. Take action to reduce hydraulic pressure. At this time, in the second hydraulic circuit 14, the control device 50 controls the inlet valve 28 to be energized, the outlet valve 29 to be energized, the switching valve 32 to be non-energized, and the pressure boost valve 33 is controlled to be in a non-energized state, the motor 40 is driven.

Further, for example, when the hydraulic pressure of the brake fluid in the wheel cylinders 24 of the first hydraulic circuit 12 is insufficient or there is a possibility that the hydraulic pressure of the brake fluid in the wheel cylinders 24 of the first hydraulic circuit 12 is insufficient, the control device 50 perform an action that increases the hydraulic pressure of At this time, the control device 50 controls the inlet valve 28 in the non-energized state, controls the outlet valve 29 in the non-energized state, controls the switching valve 32 in the energized state, and increases the pressure in the first hydraulic circuit 12. The motor 40 is driven while controlling the valve 33 to be energized. In addition, the control device 50 controls the amount of brake fluid in the wheel cylinders 24 of the second hydraulic circuit 14 when the hydraulic pressure of the brake fluid in the wheel cylinders 24 of the second hydraulic circuit 14 is insufficient or when there is a possibility that the hydraulic pressure of the brake fluid is insufficient. Perform an action that increases hydraulic pressure. At this time, the control device 50 controls the inlet valve 28 in the non-energized state, controls the outlet valve 29 in the non-energized state, controls the switching valve 32 in the energized state, and increases the pressure in the second hydraulic circuit 14. The motor 40 is driven while controlling the valve 33 to be energized.

That is, the brake hydraulic pressure control device 60 can control the hydraulic pressure of the brake fluid in the wheel cylinders 24 of the first hydraulic circuit 12 to perform the antilock braking operation of the first hydraulic circuit 12. . Further, the brake hydraulic pressure control device 60 can control the hydraulic pressure of the brake fluid in the wheel cylinders 24 of the second hydraulic circuit 14 to perform the antilock braking operation of the second hydraulic circuit 14. . In addition, the brake fluid pressure control device 60 can control the fluid pressure of the brake fluid in the wheel cylinders 24 of the first fluid pressure circuit 12 to automatically increase the pressure of the first fluid pressure circuit 12. . Further, the brake hydraulic pressure control device 60 can control the hydraulic pressure of the brake fluid in the wheel cylinders 24 of the second hydraulic circuit 14 to automatically increase the pressure of the second hydraulic circuit 14 .

<Configuration of Brake Fluid Pressure Control Device>
In the brake fluid pressure control device 60, the base 70, the motor 40, and the control board 51 of the control device 50 are unitized. In the present embodiment, each member (inlet valve 28, outlet valve 29, accumulator 30, pump device 31, switching valve 32, pressure increasing valve 33, master cylinder fluid) other than motor 40 provided on base 70 pressure sensor 34 , wheel cylinder hydraulic pressure sensor 35 , etc.) are also unitized with base 70 and control board 51 . The configuration of the unitized portion of the brake fluid pressure control device 60 will be described below.

FIG. 3 is a perspective view showing a unitized portion of the brake fluid pressure control device according to the embodiment of the present invention. FIG. 4 is a partial cross-sectional view of the unitized portion of the brake fluid pressure control device according to the embodiment of the present invention, viewed from the side. In FIG. 4 , the central portion of the drawing is a cross section showing the periphery of the motor 40 . Also, in FIG. 4, both end portions of the figure are cross-sections showing a fixed structure between the base 70 and a housing 80 which will be described later. In FIG. 4, a workbench 97 and a jig 98 used for fixing the base 70 and the housing 80, which will be described later, are also shown by imaginary lines.

The substrate 70 described above is made of metal such as aluminum, and has a substantially rectangular parallelepiped shape, for example. This base 70 has a first surface 71 and a second surface 72 . The first surface 71 is a surface to which a housing 80 described later is attached, in other words, a surface with which the housing 80 contacts. The second surface 72 is the opposite surface of the first surface 71 . Note that each surface of the base 70 may include a stepped portion, or may include a curved surface portion.

As shown in FIG. 4, the motor 40 is attached to the base 70 . An eccentric body 42 that rotates together with the output shaft 41 of the motor 40 is attached to the output shaft 41 of the motor 40 . When the eccentric body 42 rotates, the plunger of the pump device 31 pressed against the outer peripheral surface of the eccentric body 42 reciprocates, thereby conveying the brake fluid from the suction side of the pump device 31 to the discharge side. Note that the member to which the motor 40 is attached is not limited to the base 70 . For example, the motor 40 may be attached to a housing 80, which will be described later.

As described above, the housing 80 is attached to the first surface 71 of the base 70 . At that time, the base 70 and the housing 80 are fixed using a plurality of male screws 90 . For this reason, the base 70 is formed with a plurality of through holes 73 into which the male screws 90 are inserted. These through holes 73 are formed to penetrate from the second surface 72 to the first surface 71 . Also, these through holes 73 are arranged at the four corners of the base 70, for example. In this embodiment, when the base body 70 and the housing 80 are fixed, the head portion 91 of the male screw 90 does not protrude from the second surface 72, so that the through hole 73 is provided on the second surface 72 side. The periphery of the opening is counterbored to form a recess 74 in which the head 91 is accommodated. These recesses 74 may or may not be formed.

The housing 80 includes a fixing portion 81 used for fixing the base 70 and the housing 80 together, and a substrate storage portion 82 for storing the control substrate 51 . As shown in FIG. 4, in the state where the base 70 and the housing 80 are fixed, the motor 40 is arranged in the space surrounded by the base 70 and the housing 80 . At least part of the housing 80 is made of resin. In other words, housing 80 includes resin portion 83 . In the present embodiment, both the fixed portion 81 and the substrate housing portion 82 are made of the resin portion 83 .

Specifically, the fixing portion 81 is arranged in the housing 80 at a location facing the first surface 71 of the base 70 . Holes 84 are formed in the fixed portion 81 at positions facing the through holes 73 of the base 70 . These holes 84 are open at least at the ends on the first surface side of the base 70 and communicate with the through holes 73 of the base 70 . The male screw forming portion 92 of the male screw 90 inserted into each through hole 73 of the base 70 is fastened to the hole 84 . As a result, the base 70 is sandwiched between the head portion 91 of each male screw 90 arranged on the second surface 72 of the base 70 and the fixing portion 81 of the housing 80 , and the base 70 and the housing 80 are held together. is fixed. In this embodiment, the male screw forming portion 92 of each male screw 90 is fastened to the hole 84 by self-tapping. However, the fastening configuration between the male screw forming portion 92 of each male screw 90 and the hole 84 is not limited to this configuration. For example, a female screw may be formed in advance on the inner peripheral surface of each hole 84 , and the female screw and the male screw forming portion 92 of each male screw 90 may be fastened.

Here, in the conventional brake fluid pressure control device, a motor for driving the pump device is attached to the second surface of the base body. Therefore, in the conventional brake fluid pressure control device, it is very difficult to secure a space for arranging the heads of the male screws on the second surface of the base body. Therefore, in the conventional brake fluid pressure control device, each male screw is inserted from the housing side to the base body side to fix the base body and the housing. On the other hand, in the brake fluid pressure control device 60 according to the present embodiment, the motor 40 that drives the pump device 31 is arranged in the space surrounded by the base 70 and the housing 80 as described above. Therefore, a space for arranging the head portion 91 of each male screw 90 can be secured on the second surface 72 of the base 70 . Therefore, the base body 70 and the housing 80 can be fixed by inserting the respective male screws 90 from the base body 70 side to the housing 80 side.

The board storage portion 82 of the housing 80 is arranged on the opposite side of the base 70 with respect to the fixed portion 81 . The control board 51 is housed in the board housing portion 82 . The structure for fixing the control board 51 and the housing 80 is not particularly limited, but in the present embodiment, the control board 51 is fixed to a pin 85 fixed to the housing 80, and the control board 51 and the housing 80 are fixed. . Also, the control board 51 is electrically connected to the motor 40 via the connection terminal 43 . That is, the control board 51 energizes the motor 40 through the connection terminals 43 .

Here, as described above, in the brake hydraulic pressure control device 60 according to the present embodiment, each male screw 90 can be inserted from the base 70 side to the housing 80 side to fix the base 70 and the housing 80 together. can. Therefore, in the brake hydraulic pressure control device 60 according to the present embodiment, each male screw 90 does not need to pass through the housing 80 as shown in FIG. Therefore, in the brake fluid pressure control device 60 according to the present embodiment, when the control board 51 is installed in the housing 80, the control board 51 can be arranged in the space that would otherwise interfere with the male screw. can. For example, in the case of the present embodiment, when observing the brake hydraulic pressure control device 60 in the penetrating direction of the through hole 73 of the base body 70 (in FIG. 4, when observing the brake hydraulic pressure control device 60 from the upper side of the paper surface), the male At least one of the screws 90 and the control board 51 overlap each other. This space is a space in which the control board could not be installed conventionally due to interference between the male screw and the control board. Therefore, the brake fluid pressure control device 60 according to the present embodiment can ensure a larger installation space for the control board 51 in the housing 80 than in the conventional case.

As described above, the space surrounded by the base 70 and the housing 80 accommodates the control board 51 . Therefore, it is preferable to seal the space between the base 70 and the housing 80 in order to prevent moisture from entering the space surrounded by the base 70 and the housing 80 . Conventionally, the space between the base body and the housing has been sealed by inserting an O-ring between the base body and the housing. On the other hand, in the brake fluid pressure control device 60 according to the present embodiment, the space between the base body 70 and the housing 80 is sealed with the silicon-based sealing material 95 . The silicon-based sealing material 95 is a sealing material whose main component is silicon.

Specifically, with the base 70 and the housing 80 separated from each other, the silicon-based sealing material 95 is applied to the first surface 71 of the base 70 or the opposite surface of the housing 80 to the first surface 71 . Then, the first surface 71 of the base 70 and the opposite surface of the first surface 71 of the housing 80 are overlapped. Thereafter, as described above, the plurality of male screws 90 are used to secure the base 70 and the housing 80 together. As a result, the space between the base 70 and the housing 80 is sealed with the silicon-based sealing material 95 . After the silicon-based sealing material 95 dries, the substrate 70 and the housing 80 are bonded together by the silicon-based sealing material 95 . In this embodiment, for example, an annular groove 75 is formed in the first surface 71 of the substrate 70 and the silicon-based sealing material 95 is applied to the groove 75 . However, the shape of the portion to which the silicon-based sealing material 95 is applied is arbitrary, and may be flat, for example.

For example, in the brake fluid pressure control device 60 according to the present embodiment, it is assumed that the space between the base 70 and the housing 80 is sealed with an O-ring. In order to seal between the base 70 and the housing 80 with the O-ring, it is necessary to sandwich the O-ring between the base 70 and the housing 80 so as to crush it. For this reason, a force acts on the housing 80 from the O-ring in a direction away from the base 70 . Here, in the present embodiment, the fixed portion 81 of the housing 80 is the resin portion 83 as described above. Then, as shown in FIG. 4 , the male screw forming portion 92 of the male screw 90 is directly fastened to the resin portion 83 . In such a fastening structure, when the space between the base 70 and the housing 80 is sealed with an O-ring, when the fixed portion 81, which is the resin portion 83, is heated by the heat generated by the control board 51, the motor 40, etc., the O-ring The fixing portion 81 is deformed by the force acting on the fixing portion 81 from the ring, and the male screw 90 is loosened. For this reason, in such a fastening structure, when the space between the base 70 and the housing 80 is sealed with an O-ring, in order to suppress the loosening of the male screw 90, the fixed portion 81, which is the resin portion 83, is provided with a metal member. It is necessary to embed a nut and fasten the external thread forming portion 92 of the external thread 90 to the nut.

On the other hand, when the space between the base 70 and the housing 80 is sealed with the silicon-based sealing material 95 , no force acts on the housing 80 in the direction away from the base 70 . After the silicon-based sealing material 95 dries, the substrate 70 and the housing 80 are bonded together by the silicon-based sealing material 95 . That is, the fixed portion 81 that is the resin portion 83 of the housing 80 is connected to the base 70 made of metal such as aluminum by the silicon-based sealing material 95 . Therefore, when the space between the base 70 and the housing 80 is sealed with the silicon-based sealing material 95, the fixing portion 81, which is the resin portion 83, is not deformed even if it is heated by the heat generated by the control board 51, the motor 40, and the like. difficult. Therefore, when the space between the base body 70 and the housing 80 is sealed with the silicon-based sealing material 95 , the male thread forming portion 92 of the male screw 90 can be directly fastened to the fixed portion 81 which is the resin portion 83 . As a result, there is no need to embed a metal nut in the fixing portion 81, which is the resin portion 83, and the manufacturing cost of the brake fluid pressure control device 60 can be suppressed.

Further, as shown in FIGS. 3 and 4, the housing 80 has a gap 86 formed between the fixing portion 81 and the substrate housing portion 82 . In other words, the gap 86 is the male screw 90 when the brake fluid pressure control device 60 is observed in the penetrating direction of the through hole 73 of the base 70 (when the brake fluid pressure control device 60 is observed from the upper side of the paper in FIG. 4). and the control board 51 overlap each other, and are formed in a range between the male screw 90 and the control board 51 . As shown in FIG. 4, by forming a gap 86, when fixing the base body 70 and the housing 80 with the male screw 90, by inserting a jig 98 into the gap 86, the housing 80 can be attached to the workbench 97. It can be fixed with a jig 98 . That is, it becomes possible to fix the housing 80 portion near the fastening portion of the male screw 90 with the jig 98 . This facilitates the work of fixing the base 70 and the housing 80 with the male screw 90 .

<Effects of brake fluid pressure control device>
Effects of the brake hydraulic pressure control device 60 according to the present embodiment will be described.

A brake fluid pressure control device 60 according to the present embodiment includes a base body 70 in which a brake fluid flow path is formed, a motor 40 for driving a pump device 31 provided in the brake fluid flow path, and a motor 40 , a housing 80 that houses the control board 51 , and a plurality of male screws 90 that fix the base 70 and the housing 80 . Motor 40 is arranged in a space surrounded by base 70 and housing 80 . A plurality of through holes 73 into which the male screws 90 are inserted are formed in the base 70 . Each male screw 90 is inserted into the through hole 73 and fastened to the housing 80 . Thus, in the brake fluid pressure control device 60 according to the present embodiment, the motor 40 that drives the pump device 31 is arranged in the space surrounded by the base 70 and the housing 80 . Therefore, a space for arranging the head portion 91 of each male screw 90 can be secured on the second surface 72 of the base 70 . Therefore, the base body 70 and the housing 80 can be fixed by inserting the respective male screws 90 from the base body 70 side to the housing 80 side. Therefore, in the brake hydraulic pressure control device 60 according to the present embodiment, each male screw 90 does not need to pass through the housing 80 as shown in FIG. Therefore, in the brake fluid pressure control device 60 according to the present embodiment, when the control board 51 is installed in the housing 80, the control board 51 can be arranged in the space that would otherwise interfere with the male screw. can. Therefore, the brake fluid pressure control device 60 according to the present embodiment can ensure a larger installation space for the control board 51 in the housing 80 than in the conventional case.

Preferably, the substrate 70 and the housing 80 are bonded together with a silicone-based sealing material 95 , and the housing 80 includes a resin portion 83 . Each male screw 90 is directly fastened to the resin portion 83 . By configuring in this way, it becomes unnecessary to embed a metal nut in the resin portion 83, and the manufacturing cost of the brake fluid pressure control device 60 can be suppressed.

Preferably, at least one of the male screws 90 and the control board 51 overlap when the brake fluid pressure control device 60 is observed in the penetrating direction of the through hole 73 of the base 70 . This space is a space in which the control board could not be installed conventionally due to interference between the male screw and the control board. In the brake fluid pressure control device 60 according to this embodiment, the control board 51 can be installed even in such a space.

Further, preferably, the housing 80 has a range in which the male screw 90 and the control board 51 overlap when the brake fluid pressure control device 60 is observed in the penetrating direction of the through hole 73 of the base 70 . A gap 86 is formed in a range between 90 and control board 51 . By forming the gap 86, it becomes possible to fix the portion of the housing 80 near the fastening portion of the male screw 90 with the jig 98, thereby facilitating the work of fixing the base 70 and the housing 80 with the male screw 90. .

Although the brake hydraulic pressure control device 60 according to the present embodiment has been described above, the brake hydraulic pressure control device according to the present invention is not limited to the description of the present embodiment. For example, only part of this embodiment may be implemented.

1 fuselage 2 steering wheel 3 front wheel 3a rotor 4 rear wheel 4a rotor 10 brake system 11 brake lever 12 first hydraulic circuit 13 brake pedal 14 second hydraulic circuit 21 master cylinder 22 Reservoir 23 Brake Caliper 24 Wheel Cylinder 25 Main Channel 25a Midway Main Channel 26 Secondary Channel 26a Midway Secondary Channel 27 Pressure Boosting Channel 28 Inlet Valve 29 Outlet Valve 30 Accumulator 31 Pump Device 32 switching valve, 33 boosting valve, 34 master cylinder hydraulic pressure sensor, 35 wheel cylinder hydraulic pressure sensor, 40 motor, 41 output shaft, 42 eccentric body, 43 connection terminal, 50 control device, 51 control board, 60 brake hydraulic pressure Control Device 70 Substrate 71 First Surface 72 Second Surface 73 Through Hole 74 Recess 75 Groove 80 Housing 81 Fixing Part 82 Substrate Storage Part 83 Resin Part 84 Hole 85 Pin 86 Gap , 90 male screw, 91 head, 92 male thread forming portion, 95 silicon-based sealing material, 97 workbench, 98 jig, 100 vehicle, MP master cylinder port, WP wheel cylinder port.

Claims (3)

a base body (70) in which a brake fluid flow path (26) is formed;
a motor (40) for driving a pump device (31) provided in the flow path (26);
a control board (51) of a control device (50) that controls the motor (40);
a housing (80) that houses the control board (51);
a plurality of external screws (90) fixing the base (70) and the housing (80);
A brake fluid pressure control device (60) for a vehicle (100) comprising
The motor (40) is arranged in a space surrounded by the base (70) and the housing (80),
A plurality of through holes (73) into which the male screws (90) are inserted are formed in the base (70),
Each of the male screws (90) is inserted into the through hole (73) and fastened to the housing (80) ,
When observed in the through-hole direction of the through-hole (73),
At least one of the male screws (90) and the control board (51) overlap each other
A brake fluid pressure control device (60). The substrate (70) and the housing (80) are bonded together with a silicon-based sealing material (95),
The housing (80) includes a resin portion (83),
The brake fluid pressure control device (60) according to claim 1, wherein each of said male screws (90) is directly fastened to said resin portion (83). The housing (80) includes:
A range in which the male screw (90) and the control board (51) overlap when observed in the penetrating direction of the through hole (73), and the male screw (90) and the control board (51) 3. The brake fluid pressure control device (60) according to claim 1 or 2 , wherein a gap (86) is formed in a range between and.

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