JP6497734B2 - Brake control device for vehicle, method for manufacturing the same, and brake system for vehicle - Google Patents

Description

  The present invention relates to a vehicle brake control device, a method for manufacturing the same, and a vehicle brake system.

  An electronic control unit used in a vehicle brake system has a housing attached to a base, and a control board is accommodated in the housing. Also, a normal mode choke coil and a common mode choke coil, which are choke coils for reducing noise, are accommodated in the housing (see, for example, Patent Document 1).

JP 2013-69737 A

  The electronic control unit described in Patent Document 1 includes a normal mode choke coil and a common mode choke coil which are large choke coils. For this reason, the number of parts increases, and there is a problem that the size of the housing increases due to the layout of such a large choke coil in the housing.

  The present invention has been made in view of the above circumstances, and provides a vehicle brake control device, a manufacturing method thereof, and a vehicle brake system capable of reducing the number of parts or downsizing an electronic control unit. Let it be an issue.

The present invention for solving the above-described problems is a vehicle brake control device, and includes a metal base and an electronic control unit attached to the base. The electronic control unit includes a resin-made housing attached to a base-side mounting surface formed on the base, a control board accommodated in the housing, and noise generated from the control board integrally formed on a side wall of the housing. And a conductive member for releasing the heat. The tip of the conductive member is formed in a needle shape that is exposed to the outside of the side wall. The side wall of the housing has a housing-side mounting surface that is a mounting surface with the base, and an exposed surface that is located on the opposite side of the base from the housing-side mounting surface, and the tip of the conductive member Protrudes from the exposed surface. A protrusion is formed on the base so as to protrude toward the exposed surface. The conductive member is electrically connected to the base body through the insulating layer formed on the surface of the base body.

In this configuration, since the tip of the conductive member integrally formed on the side wall of the housing penetrates the insulating layer on the surface of the base and is electrically connected to the base, noise generated from the control board is passed through the conductive member. It can escape to the substrate. Thereby, for example, the number of choke coils for reducing noise can be reduced, or the choke coils can be reduced in size. Further, the conductive member can be easily connected to the base body by the needle shape at the tip.
Therefore, it is possible to provide a vehicle brake control device capable of reducing the number of parts or downsizing the electronic control unit.
In addition, since the exposed surface of the housing is located on the opposite side of the base with respect to the housing-side mounting surface, before attaching the housing to the base, the needle-shaped tip of the conductive member does not protrude to the outside. It can be in a retracted state. As a result, the assembly work can be performed while the tip of the conductive member is housed in the housing even when the apparatus is manufactured.

  In the vehicle brake control device, the housing may include a plurality of fixing portions that fix the housing to the base body. Moreover, the said front-end | tip part of the said electrically-conductive member is good to be provided in the vicinity of the said fixing | fixed part in the said housing.

  In this configuration, since the distal end portion of the conductive member is provided in the vicinity of the fixing portion in the housing, the distal end portion of the conductive member is securely and securely attached to the base body by using a fixing force when the housing is fixed to the base body. Can be pierced firmly.

  In the vehicle brake control device, the electronic control unit may include an annular seal member that seals between the housing and the base. The conductive member may be disposed inside the seal member.

  In this configuration, since the conductive member is disposed inside the seal member, the inside of the housing can be sealed including the conductive member. Thereby, the conductive member is protected from the external environment.

  In the vehicle brake control device, a clearance may be formed between the exposed surface and the protrusion.

  In this configuration, since the clearance is formed between the exposed surface and the protruding portion, the housing-side mounting surface can be reliably brought into contact with the base-side mounting surface. Thereby, the mounting state of the housing on the base body is not affected by the connection of the conductive member to the base body, and is maintained well.

  In the vehicle brake control device, the side wall may have a built-up portion that bulges inward from the inner surface of the side wall. The conductive member may be integrally formed with the build-up portion.

  In this configuration, since the conductive member is integrally formed on the build-up portion, the conductive member can be connected to the base body via the build-up portion on the side wall of the housing. Thereby, a conductive member can be laid out efficiently.

  In the vehicle brake control device, it is preferable that a retreat suppressing portion that suppresses retreat of the conductive member is formed in a portion embedded in the side wall of the conductive member.

  In this configuration, since the recession suppressing portion is formed on the conductive member, the conductive member can be prevented from moving backward to the side opposite to the base when connecting the conductive member to the base, and the conductive member is securely and firmly attached to the base. Can be pierced.

  The present invention for solving the above-described problems is a vehicle brake system including the vehicle brake control device and a slave cylinder that generates brake fluid pressure by driving an electric actuator. Further, the vehicle brake control device includes the base body having a cylinder hole, a piston inserted into the cylinder hole and connected to a brake operator, and the electronic control unit that controls the electric actuator. Yes. The present invention is preferably used for a vehicle brake system having such a configuration.

  The present invention for solving the above-mentioned problems is a method of manufacturing the vehicle brake control device, wherein the conductive member is formed on the surface of the base when the housing is assembled to the base. The substrate is pierced so as to penetrate the insulating layer.

In this configuration, since the tip of the conductive member is electrically connected to the base by piercing the base so that the leading end of the conductive member penetrates the insulating layer of the base, noise generated from the control board is released to the base via the conductive member. Can do. Thereby, for example, the number of choke coils for reducing noise can be reduced, or the choke coils can be reduced in size. In addition, in the process of assembling the housing to the base body, the conductive member can be easily connected to the base body by the needle shape at the tip thereof without the need for a process such as cutting or caulking. it can.
Therefore, it is possible to provide a method for manufacturing a vehicle brake control device capable of reducing the number of parts or downsizing the electronic control unit.

  ADVANTAGE OF THE INVENTION According to this invention, the brake control apparatus for vehicles which can reduce the number of parts or size reduction about an electronic control unit, its manufacturing method, and the brake system for vehicles can be provided. In addition, the conductive member can be easily connected to the base body by the needle shape at the tip thereof in one step of the assembly process of the housing to the base body.

It is a mimetic diagram showing the composition of the brake system for vehicles using the input device concerning one embodiment of the present invention. It is a disassembled perspective view of the input device shown by FIG. FIG. 3 is an enlarged perspective view showing a state in which the housing and the control board shown in FIG. 2 are taken out and the control board is horizontally positioned above the housing. FIG. 4 is an enlarged perspective view as seen from below the housing shown in FIG. It is sectional drawing which shows the expanded sectional view in alignment with the VV line | wire of FIG. 3 with a connection part with a base | substrate. It is sectional drawing which follows the VI-VI line of FIG.

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
Note that, in the drawings shown below, the same members are denoted by the same reference numerals, and redundant descriptions are omitted as appropriate.

In this embodiment, a case where the vehicle brake control device of the present invention is applied to an input device of a vehicle brake system will be described as an example.
In the following description, after first describing the overall configuration of the vehicle brake system, the input device that is the vehicle brake control device of the present invention will be described in detail.

  As shown in FIG. 1, the vehicle brake system A includes a by-wire brake system that operates when a prime mover (such as an engine or an electric motor for traveling) is started, and a hydraulic system that operates when the prime mover is stopped. It is equipped with both the brake system.

  The vehicle brake system A can be mounted not only on an automobile that uses only an engine (internal combustion engine) as a power source, but also on a hybrid car that uses a motor together, an electric car that uses only a motor as a power source, and a fuel cell car. .

The vehicle brake system A includes an input device A1 (vehicle brake control device) that generates brake fluid pressure according to the stroke amount (actuation amount) of the brake pedal B (brake operator).
Further, the vehicle brake system A includes a slave cylinder A2 that generates brake fluid pressure by driving the motor 12 (electric actuator) according to the stroke amount of the brake pedal B.
Furthermore, the vehicle brake system A includes a hydraulic pressure control device A3 that supports stabilization of vehicle behavior.
The input device A1, the slave cylinder A2, and the hydraulic pressure control device A3 are configured as separate units in this embodiment, and communicate with each other via an external pipe.

  The input device A1 includes a base body 100, a master cylinder 1 that generates brake fluid pressure according to the stroke amount of the brake pedal B, a stroke simulator 2 that applies a pseudo operation reaction force to the brake pedal B, and an electronic control unit. 7 (see FIG. 2).

  The base body 100 is a metal block mounted on a vehicle, and has two cylinder holes 1g and 2g and a plurality of hydraulic pressure paths 9a, 9b and 9e. Various components such as the reservoir 3 are attached to the base body 100.

  The master cylinder 1 is a tandem piston type, and includes two pistons 1a and 1b and two coil springs 1c and 1d. The master cylinder 1 is provided in a bottomed cylindrical first cylinder hole 1g.

  A first pressure chamber 1e is formed between the bottom surface of the first cylinder hole 1g and the first piston 1a. A first coil spring 1c is accommodated in the first pressure chamber 1e. The first coil spring 1c pushes the first piston 1a moved to the bottom side back to the opening side.

  A second pressure chamber 1f is formed between the first piston 1a and the second piston 1b. A second coil spring 1d is accommodated in the second pressure chamber 1f. The second coil spring 1d pushes the second piston 1b moved to the bottom side back to the opening side.

The rod B1 of the brake pedal B is inserted into the first cylinder hole 1g. The tip of the rod B1 is connected to the second piston 1b. Thereby, the 2nd piston 1b is connected with brake pedal B via rod B1.
The first piston 1a and the second piston 1b receive the depression force of the brake pedal B, slide in the first cylinder hole 1g to the bottom surface side, and pressurize the brake fluid in both the pressure chambers 1e and 1f.

  The reservoir 3 is a container for storing brake fluid, and is attached to the upper surface of the base body 100 (see FIG. 2). Both the pressure chambers 1e and 1f are supplied with brake fluid from the reservoir 3 through the communication holes 3a and 3a.

  The stroke simulator 2 includes a piston 2a, two coil springs 2b and 2c, and a lid member 2d. The stroke simulator 2 is provided in the bottomed cylindrical second cylinder hole 2g. The opening of the second cylinder hole 2g is closed by the lid member 2d.

  A pressure chamber 2e is formed between the bottom surface of the second cylinder hole 2g and the piston 2a. A storage chamber 2f is formed between the piston 2a and the lid member 2d. Two coil springs 2b and 2c are accommodated in the accommodating chamber 2f. Both the coil springs 2b and 2c push back the piston 2a moved to the lid member 2d side to the bottom surface side and apply an operation reaction force to the brake pedal B.

Next, each hydraulic path formed in the base body 100 of the input device A1 will be described.
The first main hydraulic pressure path 9a is a hydraulic pressure path starting from the first pressure chamber 1e of the first cylinder hole 1g. The output port that is the end point of the first main hydraulic pressure passage 9a is connected to a pipe Ha that reaches the hydraulic pressure control device A3.

  The second main hydraulic pressure path 9b is a hydraulic pressure path starting from the second pressure chamber 1f of the first cylinder hole 1g. The output port which is the end point of the second main hydraulic pressure path 9b is connected to a pipe Hb leading to the hydraulic pressure control device A3.

  The branch hydraulic pressure path 9 e is a hydraulic pressure path that branches from the first main hydraulic pressure path 9 a and reaches the pressure chamber 2 e of the stroke simulator 2.

  In the first main hydraulic pressure path 9a, a normally-open electromagnetic valve V1 that opens and closes the first main hydraulic pressure path 9a is provided on the downstream side (output port side) of the connection portion with the branch hydraulic pressure path 9e. ing. The electromagnetic valve V1 is a master cut valve that shuts off the upstream side and the downstream side of the first main hydraulic pressure passage 9a by switching to a closed state.

  The second main hydraulic pressure passage 9b is provided with a normally open electromagnetic valve V1 that opens and closes the second main hydraulic pressure passage 9b. The solenoid valve V1 is a master cut valve that shuts off the upstream side and the downstream side of the second main hydraulic pressure passage 9b by switching to the closed state.

  The branch hydraulic pressure passage 9e is provided with a normally closed electromagnetic valve V2. This electromagnetic valve V2 opens and closes the branch hydraulic pressure path 9e.

  The two pressure sensors P, P detect the magnitude of the brake fluid pressure. Information acquired by both pressure sensors P, P is output to the electronic control unit 7.

The pressure sensor P in the first main hydraulic pressure passage 9a is arranged on the downstream side (output port side) from the solenoid valve V1, and detects the brake hydraulic pressure generated in the slave cylinder A2.
The pressure sensor P in the second main hydraulic pressure passage 9b is arranged on the upstream side (master cylinder 1 side) of the solenoid valve V1, and detects the brake hydraulic pressure generated in the master cylinder 1.

  The electronic control unit 7 controls the opening and closing of the solenoid valves V1 and V2 based on information obtained from various sensors such as the pressure sensor P and the stroke sensor (not shown) or a program stored in advance. At the same time, the operation of the motor 12 of the slave cylinder A2 is also controlled.

  The slave cylinder A2 includes a base body 10 having a bottomed cylindrical cylinder hole 10a, slave pistons 11a and 11b that slide in the cylinder hole 10a, and a motor 12.

  The base body 10 is a metal part mounted on a vehicle, and has a cylinder hole 10a. Various components such as a reservoir are attached to the base 10.

  A first pressure chamber 10b is formed between the bottom surface of the cylinder hole 10a and the first slave piston 11a. A first coil spring 13a is accommodated in the first pressure chamber 10b. The first coil spring 13a pushes the first slave piston 11a moved to the bottom side back to the opening side.

  A second pressure chamber 10c is formed between the first slave piston 11a and the second slave piston 11b. A second coil spring 13b is accommodated in the second pressure chamber 10c. The second coil spring 13b pushes the second slave piston 11b moved to the bottom side back to the opening side.

The motor 12 is an electric servo motor that is driven and controlled by the electronic control unit 7 of the input device A1.
The motor 12 is attached to the side surface of the base 10. A rod 12a protruding from the motor 12 is inserted into the cylinder hole 10a.

  In the case of the motor 12, a drive transmission unit that converts the rotational driving force of the output shaft of the motor 12 into a linear axial force is accommodated. The drive transmission unit is configured by a ball screw mechanism, for example. When the rotational driving force of the output shaft of the motor 12 is input to the drive transmission unit, a linear axial force is applied from the drive transmission unit to the rod 12a, and the rod 12a moves forward and backward in the axial direction.

  The tip of the rod 12a is in contact with the second slave piston 11b. When the rod 12a moves to the bottom surface side of the cylinder hole 10a, both slave pistons 11a and 11b slide in the cylinder hole 10a in response to input from the rod 12a, and brake fluid in both pressure chambers 10b and 10c. Pressurize.

Next, each hydraulic path formed in the base body 10 of the slave cylinder A2 will be described.
The first series of fluid passages 9f are fluid passages starting from the first pressure chamber 10b of the cylinder hole 10a. A pipe Hc branched from the pipe Ha is connected to the output port which is the end point of the first fluid passage 9f.
The second communication fluid pressure path 9g is a fluid pressure path starting from the second pressure chamber 10c of the cylinder hole 10a. A pipe Hd branched from the pipe Hb is connected to the output port which is the end point of the second communication hydraulic pressure path 9g.

The hydraulic pressure control device A3 controls the brake hydraulic pressure applied to each wheel cylinder W of the wheel brake, and can execute antilock brake control, side slip control that stabilizes the behavior of the vehicle, traction control, and the like. It has.
In addition, although illustration is abbreviate | omitted, hydraulic control apparatus A3 is a hydraulic unit provided with a solenoid valve, a pump, etc., a motor for driving a pump, an electronic control device for controlling a solenoid valve, a motor, etc. It has.
The hydraulic pressure control device A3 is connected to the input device A1 via the pipings Ha and Hb, and is connected to the slave cylinder A2 via the pipings Ha and Hc and the pipings Hb and Hd. Furthermore, the hydraulic pressure control device A3 is connected to each wheel cylinder W via a pipe.

Next, an outline of the operation of the vehicle brake system A will be described.
In the vehicle brake system A, when a stroke sensor (not shown) detects that the brake pedal B has been operated, the electronic control unit 7 switches to a state in which the normally open electromagnetic valves V1 and V1 are closed. As a result, the upstream side and the downstream side of both main hydraulic pressure paths 9a and 9b are blocked.

  Further, the electronic control unit 7 opens the normally closed electromagnetic valve V2. As a result, the brake fluid can flow into the stroke simulator 2 from the first main hydraulic pressure passage 9a through the branch hydraulic pressure passage 9e.

  Both pistons 1a, 1b of the master cylinder 1 receive the depression force of the brake pedal B, slide in the first cylinder hole 1g to the bottom surface side, and pressurize the brake fluid in both pressure chambers 1e, 1f. At this time, since the upstream side and the downstream side of both main hydraulic pressure passages 9a and 9b are blocked, the brake hydraulic pressure generated in both pressure chambers 1e and 1f is not transmitted to the wheel cylinder W.

When the brake fluid in the first pressure chamber 1e is pressurized, the brake fluid flows from the first main hydraulic pressure passage 9a into the branch hydraulic pressure passage 9e. Then, the brake fluid in the pressure chamber 2e of the stroke simulator 2 is pressurized, and the piston 2a moves toward the lid member 2d against the urging force of the coil springs 2b and 2c.
As a result, the brake pedal B strokes, and a biasing force is generated toward the bottom surface of the piston 2a by the coil springs 2b and 2c, and a pseudo operation reaction force is applied from the piston 2a to the brake pedal B. Is granted.

Further, when depression of the brake pedal B is detected by a stroke sensor (not shown), the motor 12 of the slave cylinder A2 is driven.
The electronic control unit 7 compares the brake fluid pressure output from the slave cylinder A2 with the brake fluid pressure output from the master cylinder 1, and controls the rotation speed of the motor 12 and the like based on the comparison result.

In the slave cylinder A2, both slave pistons 11a and 11b receive the input from the rod 12a and slide in the cylinder hole 10a to the bottom surface side, and the brake fluid in both pressure chambers 10b and 10c is pressurized.
In this way, in the slave cylinder A2, the brake fluid pressure is generated according to the stroke amount of the brake pedal B.

The brake hydraulic pressure generated in the slave cylinder A2 is input from the pipes Hc and Hd to the hydraulic pressure control device A3 through the pipes Ha and Hb.
Further, the brake fluid pressure is transmitted from the hydraulic pressure control device A3 to each wheel cylinder W, and each wheel cylinder W is actuated to apply a braking force to each wheel.

In a state where the slave cylinder A2 does not operate (for example, when electric power cannot be obtained), both the solenoid valves V1, V1 are opened, and the upstream side and the downstream side of both the main hydraulic pressure paths 9a, 9b. The side is in communication. The electromagnetic valve V2 is closed.
In this state, the brake fluid pressure in both the main fluid pressure passages 9a and 9b is increased by the master cylinder 1. And each wheel cylinder W which leads to both the main hydraulic pressure paths 9a and 9b raises pressure, and braking force is given to a wheel.

Next, the input device A1 will be described in detail.
As shown in FIG. 2, the input device A <b> 1 includes a base body 100 and an electronic control unit 7 attached to the base body 100. Inside the base body 100, a master cylinder 1 and a stroke simulator 2 are provided.
The input device A1 is attached to the front surface of the dashboard that partitions the engine room and the vehicle compartment.

The base body 100 is a metal block, which is formed larger in the front-rear direction than in the left-right direction, and has a rear end portion widened in the left-right direction.
In the present embodiment, the front-rear direction, the left-right direction, and the up-down direction of the base body 100 are directions when the input device A1 is mounted on a vehicle.
In the base body 100, a first cylinder hole 1g (see FIG. 1) of the master cylinder 1 and a second cylinder hole 2g of the stroke simulator 2 are formed. Both cylinder holes 1g and 2g are juxtaposed in the left-right direction of the vehicle and extend in the front-rear direction.
In the present embodiment, the first cylinder hole 1g is disposed at the center of the base body 100, and the second cylinder hole 2g is disposed on the right side of the first cylinder hole 1g.

The rear end surface 120 of the base body 100 is a part attached to the front surface of the dashboard. Stud bolts 140 are erected on the four corners of the rear end surface 120 in the vertical and horizontal directions.
When the base body 100 is attached to the front surface of the dashboard, the stud bolt 140 is inserted into the attachment hole of the dashboard, and the tip end portion of the stud bolt 140 is fixed to the vehicle body frame.

A base-side mounting surface 110 to which the electronic control unit 7 is attached is formed on the left side surface of the base 100.
In the upper half area of the base-side mounting surface 110, there are formed a plurality of mounting holes 111 into which electrical components such as the electromagnetic valves V1, V2 and pressure sensors P, P are mounted.

  In the lower half region of the base-side mounting surface 110, a substantially rectangular parallelepiped heat dissipating part 130 is projected. The heat radiating part 130 is a solid protruding part formed integrally with the base body 100.

Next, the electronic control unit 7 will be described.
As shown in FIGS. 2 to 3, the electronic control unit 7 includes a housing 71 that is a synthetic resin box attached to the base-side attachment surface 110, and a control board 80 accommodated in the housing 71. ing.

  The housing 71 includes a substantially rectangular partition 72 and a side wall 73 surrounding the partition 72. The side wall 73 is vertically raised from the peripheral edge of the partition 72 to the front side (left side) and the back side (right side).

  The housing 71 is attached to the base-side mounting surface 110 formed on the base 100 while covering the electromagnetic valves V1 and V2 and the pressure sensors P and P protruding from the base-side mounting surface 110 of the base 100.

As shown in FIG. 4, a plurality of mounting holes 77 are formed in the side wall 73 of the housing 71 as fixing portions for fixing the housing 71 to the base body 100. Then, a screw member (not shown) such as a bolt inserted into each mounting hole 77 is screwed into a screw hole 112 (see FIG. 2) of the base body 100, so that the housing 71 is attached to the base-side mounting surface 110 of the base body 100. Fixed.
As shown in FIG. 2, the opening on the front side (left side) of the housing 71 is sealed with a cover 76 made of synthetic resin.

As shown in FIGS. 2 to 4, the internal space of the housing 71 is divided into two spaces, front and back (left and right), by a partition portion 72. A first storage chamber 74 (see FIG. 4) is formed between the partition portion 72 and the base-side mounting surface 110 (see FIG. 2). Moreover, the 2nd storage chamber 75 (refer FIG. 3) is formed between the partition part 72 and the cover 76 (refer FIG. 2).
The first storage chamber 74 is a space in which the electromagnetic valves V1, V2 and the pressure sensors P, P protruding from the base-side mounting surface 110 are stored, and the second storage chamber 75 is a space in which the control board 80 is stored. is there.

  The partition portion 72 is a plate-like portion that faces the base-side mounting surface 110 with a space therebetween, and is formed with a rectangular opening 72a through which the heat radiating portion 130 protruding from the base-side mounting surface 110 passes.

  The control board 80 controls the operation of the electromagnetic valves V1 and V2 (see FIG. 1) of the input device A1 based on information obtained from various sensors, a program stored in advance, and the like, and a slave cylinder. The operation of the A2 motor 12 (see FIG. 1) is controlled.

The control board 80 is obtained by attaching electronic components (not shown) to a rectangular board body 81 on which electronic circuits are printed.
The control board 80 is mounted in contact with and supported by a support portion 78 (see FIG. 5) that protrudes from the surface of the partition portion 72, and is disposed on the surface of the partition portion 72 with a gap.

  In the second storage chamber 75, the heat radiating part 130 protrudes through the opening 72 a of the partition part 72. The front end surface of the heat radiating portion 130 is in contact with the control board 80 via grease, and heat generated in the control board 80 is radiated through the base body 100.

  As shown in FIGS. 4 to 5, the electronic control unit 7 includes a conductive member 90 that releases noise generated from the control board 80. The conductive member 90 is integrally formed (insert molding) on the side wall 73 of the housing 71.

  The conductive member 90 includes a plate body 91, a first extending portion 92, a second extending portion 93, and a tip portion 94. The conductive member 90 is made of, for example, a metal material that is a material having good electrical conductivity.

  The plate body 91 has a rectangular flat plate shape parallel to the base-side mounting surface 110 of the base body 100 and is embedded in the partition portion 72 of the housing 71. A recess 72b (see FIG. 3) is formed in the partition 72, and the surface of the plate body 91 of the conductive member 90 is exposed on the bottom surface of the recess 72b.

  The first extending portion 92 has a narrow strip shape extending from the side end portion of the plate body 91 toward the side wall 73, and is embedded in the partition portion 72 of the housing 71. The second extending portion 93 has a narrow strip shape that is bent and extended at a right angle from the end of the first extending portion 92 on the side wall 73 side toward the base body 100.

  The side wall 73 of the housing 71 has a built-in portion 73 a that bulges inward from the inner surface of the side wall 73. The second extending portion 93 is embedded in the built-up portion 73 a of the side wall 73. That is, the conductive member 90 is integrally formed with the built-up portion 73 a of the side wall 73.

  The distal end portion 94 is provided on the distal end side of the second extending portion 93 and is formed in a needle shape exposed to the outside of the side wall 73. The needle shape of the tip portion 94 may be a shape with a sharp tip, and may be, for example, a pyramid shape or a conical shape.

  The leading end portion 94 of the conductive member 90 is provided in the vicinity of a mounting hole 77 (see FIG. 4) as a fixing portion in the housing 71.

  The plate body 91, the first extending portion 92, the second extending portion 93, and the distal end portion 94 of the conductive member 90 are produced by subjecting one plate material to mechanical processing such as punching, bending, and cutting. ing. However, a part of the conductive member 90 may be formed separately and may be manufactured by combining a plurality of members.

  As shown in FIG. 5, the electronic control unit 7 includes an annular (endless) seal member 85 that seals between the housing 71 and the base body 100. A groove 86 for mounting the seal member 85 is formed in a housing side mounting surface 79 which is a mounting surface of the side wall 73 of the housing 71 with the base body 100. The conductive member 90 is disposed inside the seal member 85.

  A ground portion 82 is provided on the surface of the substrate body 81 on the base-side attachment surface 110 side. The ground part 82 is electrically connected to a ground line (not shown) of an electronic circuit formed on the board body 81 of the control board 80. An electrical connection portion 83 formed of, for example, a metal material that is a material having good electrical conductivity is joined to the ground portion 82 by, for example, solder. However, in FIG. 2 and FIG. 3, the electrical connection portion 83 is displayed separately from the control board 80 for convenience of explanation. The electrical connection portion 83 has a coil spring shape, and has elasticity that can be expanded and contracted in the axial direction.

  In a state where the control board 80 is attached to the support portion 78 of the housing 71 by screw fastening or the like, the electrical connection portion 83 is configured such that the tip thereof enters the recess 72 b formed in the partition portion 72 of the housing 71. Yes. As a result, the tip of the electrical connection portion 83 comes into contact with the surface of the plate body 91 of the conductive member 90 exposed on the bottom surface in the recess 72 b, and the ground portion 82 and the conductive member 90 are connected via the electrical connection portion 83. Conduct.

  The electrical connection portion 83 may be joined to the plate body 91 of the conductive member 90 instead of the ground portion 82 of the control board 80 by, for example, solder. In addition, the electrical connection portion 83 may be configured to be held between the ground portion 82 of the control board 80 and the plate body 91 of the conductive member 90 without being joined. Furthermore, the electrical connection portion 83 is not limited to a coil spring shape, and may have a leaf spring shape, for example.

  An insulating layer (not shown) such as an alumite film is formed on the surface of the substrate 100 in order to improve corrosion resistance (rust prevention). As shown in FIG. 5, the front end portion 94 of the conductive member 90 breaks through the insulating layer. That is, the conductive member 90 is electrically connected to the base body 100.

  As shown in FIG. 6, in the second extending portion 93 that is a portion embedded in the side wall 73 of the conductive member 90, a retraction suppressing portion 93 a that suppresses the retreat of the conductive member 90 is formed. Here, the resin of the housing 71 wraps around the opposite side of the distal end portion 94 of the retraction suppressing portion 93a during molding. In FIG. 6, the receding suppression portion 93 a is a wedge-shaped (triangular) projection, but is not limited thereto. The receding suppression portion 93a may be, for example, various shapes of convex portions or concave portions, or a simple wavy uneven shape, and is formed in a direction perpendicular to the extending direction of the second extending portion 93 so that the resin enters. It may be a horizontal hole.

  As shown in FIGS. 5 to 6, the side wall 73 of the housing 71 includes a housing side mounting surface 79 which is a mounting surface with the base body 100, and an exposed surface located on the opposite side of the base body 100 with respect to the housing side mounting surface 79. 95. The exposed surface 95 is an end surface of the built-up portion 73a. The leading end portion 94 of the conductive member 90 protrudes from the exposed surface 95. Further, the base body 100 is formed with a protruding portion 113 that protrudes toward the exposed surface 95. The protrusion 113 has, for example, a cylindrical shape, but is not limited thereto. A predetermined clearance C is formed between the exposed surface 95 and the protruding portion 113.

  When manufacturing the input device A1 as described above, a screw member is inserted into each mounting hole 77 of the housing 71 and screwed into the screw hole 112 of the base body 100, whereby the housing 71 of the electronic control unit 7 is attached to the base body 100. It is attached. When the housing 71 is assembled to the base body 100 in this way, the leading end portion 94 of the conductive member 90 penetrates the insulating layer formed on the surface of the base body 100. The leading end portion 94 of the conductive member 90 is pierced into the base body 100, whereby the conductive member 90 and the base body 100 are electrically connected.

In the present embodiment described above, the electronic control unit 7 releases the noise generated from the control board 80 integrally formed with the resin housing 71, the control board 80 accommodated in the housing 71, and the side wall 73 of the housing 71. And a conductive member 90. The distal end portion 94 of the conductive member 90 is formed in a needle shape exposed to the outside of the side wall 73. The conductive member 90 is electrically connected to the base body 100 with the distal end portion 94 penetrating the insulating layer on the surface of the base body 100. For this reason, noise generated from the control board 80 can be released to the base body 100 through the conductive member 90. Thereby, for example, the number of choke coils for reducing noise can be reduced, or the choke coils can be reduced in size. Further, in the process of assembling the housing 71 to the base body 100, a process for connecting the conductive member 90, such as cutting or caulking, is unnecessary, and the base body 100 can be easily formed by the needle shape of the tip portion 94. Can be connected to.
Therefore, it is possible to provide the input device A1 that can reduce the number of parts or reduce the size of the electronic control unit 7.

  In the present embodiment, the distal end portion 94 of the conductive member 90 is provided in the vicinity of the mounting hole 77 in the housing 71. For this reason, the distal end portion 94 of the conductive member 90 is attached to the base body by utilizing the axial force when the housing 71 is fixed to the base body 100 by inserting the screw members into the mounting holes 77 and screwing into the screw holes 112 of the base body 100. 100 can be pierced reliably and firmly.

  In the present embodiment, the conductive member 90 is disposed inside the seal member 85. For this reason, the inside of the housing 71 including the conductive member 90 can be sealed. Thereby, the conductive member 90 is protected from the external environment.

  In the present embodiment, the exposed surface 95 of the housing 71 is located on the opposite side of the base body 100 from the housing side mounting surface 79. For this reason, before the housing 71 is attached to the base body 100, the needle-shaped tip portion 94 of the conductive member 90 can be retracted into the housing 71 so as not to protrude outside. As a result, the assembly work can be performed while the tip end portion 94 of the conductive member 90 is accommodated in the housing 71 even when the apparatus is manufactured.

  In the present embodiment, a clearance C is formed between the exposed surface 95 and the protruding portion 113. For this reason, the housing-side mounting surface 79 can be reliably brought into contact with the base-side mounting surface 110. Thereby, the attachment state of the housing 71 to the base body 100 is not affected by the connection of the conductive member 90 to the base body 100, and is well maintained.

  In the present embodiment, the conductive member 90 is integrally formed with the built-up portion 73a. For this reason, the conductive member 90 can be connected to the base body 100 through the built-up portion 73 a of the side wall 73 of the housing 71. Thereby, the conductive member 90 can be laid out efficiently.

  Further, in the present embodiment, the backward restraining portion 93 a is formed in the conductive member 90. For this reason, when connecting the conductive member 90 to the base body 100, the conductive member 90 can be prevented from moving backward to the opposite side of the base body 100, and the conductive member 90 can be pierced reliably and firmly into the base body 100.

  In the present embodiment, the vehicle brake system A includes an input device A1 and a slave cylinder A2. The input device A1 includes a base body 100 having a cylinder hole 1g, pistons 1a and 1b inserted into the cylinder hole 1g and connected to a brake pedal B, and an electronic control unit 7. The present invention is preferably used for a vehicle brake system A having such a configuration.

  As described above, the present invention has been described based on the embodiment. However, the present invention is not limited to the configuration described in the embodiment, and the configuration can be appropriately changed without departing from the scope of the invention. Is. In addition, a part of the configuration of the embodiment can be added, deleted, and replaced.

  For example, in the above-described embodiment, the slave cylinder A2 is configured by a tandem cylinder having two pistons, but the slave cylinder may be configured by a cylinder using one piston.

  In the above-described embodiment, the input device A1, the slave cylinder A2, and the hydraulic pressure control device A3 are configured as separate units, but the present invention is not limited to this. At least two of the input device A1, the slave cylinder A2, and the hydraulic pressure control device A3 may be configured as an integral unit.

1 Master cylinder 1a, 1b Piston 1g Cylinder hole 7 Electronic control unit 12 Motor (electric actuator)
71 Housing 72 Partition part 73 Side wall 73a Overlay part 77 Mounting hole (fixing part)
79 Housing-side mounting surface 80 Control board 85 Seal member 90 Conductive member 93 Second extending portion (portion embedded in the side wall of the conductive member)
93a Backward restraint portion 94 Tip portion 95 Exposed surface 100 Base body 110 Base side mounting surface 113 Projection portion A Vehicle brake system A1 Input device (vehicle brake control device)
A2 Slave cylinder A3 Hydraulic control device B Brake pedal (brake operator)
C Clearance

Claims (8)

A metal substrate;
An electronic control unit attached to the base body, and a vehicle brake control device comprising:
The electronic control unit is
A resin housing attached to the base-side mounting surface formed on the base;
A control board housed in the housing;
A conductive member that is integrally formed on the side wall of the housing and releases noise generated from the control board,
The tip of the conductive member is formed in a needle shape exposed outside the side wall,
The side wall of the housing has a housing-side mounting surface that is a mounting surface with the base, and an exposed surface that is located on the opposite side of the base from the housing-side mounting surface, and the tip of the conductive member Protrudes from the exposed surface,
The base is formed with a protrusion that protrudes toward the exposed surface,
The vehicular brake control device, wherein the conductive member is electrically connected to the base through the insulating layer formed on the surface of the base. The housing has a plurality of fixing portions for fixing the housing to the base body,
The vehicle brake control device according to claim 1, wherein the leading end portion of the conductive member is provided in the vicinity of the fixed portion of the housing. The electronic control unit includes an annular seal member that seals between the housing and the base body,
The vehicle brake control device according to claim 1, wherein the conductive member is disposed inside the seal member. The vehicular brake control device according to any one of claims 1 to 3, wherein a clearance is formed between the exposed surface and the protruding portion. The side wall has a built-up portion that bulges inward from the inner surface of the side wall,
The vehicle brake control device according to any one of claims 1 to 4 , wherein the conductive member is integrally formed with the build-up portion. A portion which is embedded in the side wall of the conductive member, according to any one of claims 1 to 5, characterized in that inhibit descent-restricting portion retraction of the conductive member is formed Vehicle brake control device. The vehicle brake control device according to any one of claims 1 to 6 ,
A vehicular brake system comprising: a slave cylinder that generates a brake fluid pressure by driving an electric actuator;
The vehicle brake control device comprises:
The base body having a cylinder hole;
A piston inserted into the cylinder hole and connected to a brake operator;
The vehicle brake system comprising: the electronic control unit that controls the electric actuator. A vehicle brake control device manufacturing method comprising a metal base and an electronic control unit attached to the base,
The electronic control unit is
A resin housing attached to the base-side mounting surface formed on the base;
A control board housed in the housing;
A conductive member that is integrally formed on the side wall of the housing and releases noise generated from the control board,
The tip of the conductive member is formed in a needle shape exposed outside the side wall,
The side wall of the housing has a housing-side mounting surface that is a mounting surface with the base, and an exposed surface that is located on the opposite side of the base from the housing-side mounting surface, and the tip of the conductive member Protrudes from the exposed surface,
The base is formed with a protrusion that protrudes toward the exposed surface,
When the housing is assembled to the base body, the conductive member is pierced into the base body so that the tip portion penetrates an insulating layer formed on the surface of the base body. Production method.

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