JP2002193086A - Hydraulic control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a pressure difference between outside air pressure and a connector chamber or a housing chamber. SOLUTION: This hydraulic control device is provided with a hydraulic block 40 provided with plural solenoid hydraulic valves, a housing member 50 installed in the hydraulic block 40, a connector member 52 installed in a housing member, a housing cover 51 installed in the housing member 50, a control board 32 arranged in a board housing chamber 542 formed of the housing member 50 and the housing cover 51, an external terminal 34 penetrating through a part of the housing member 50, having one end installed on the control board 2, and having the other end arranged in the connector chamber formed of the housing member 50 and the connector member 52, a connector 60 having an electric cable 61 connected to the other end of the external terminal, and a filter 53 arranged between the board housing chamber 542 and an external space and between the connector chamber 55 and the external space, passing gas, and passing no liquid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic control device,
Specifically, anti-lock brake control (ABS) to avoid wheel lock, traction control control (TC
S), which relates to a hydraulic pressure control device that performs brake control such as braking force distribution control (EBD).

[0002]

2. Description of the Related Art Conventionally, a pressure change in a connector chamber (78) is absorbed through a communication hole (86) between a connector chamber (78) and a storage chamber (48) for a solenoid portion (Japanese Patent Laid-Open No. 2000-2000). 168530). However, in the state before the connector (55) is fitted, foreign matter may enter the storage chamber (48) from the communication hole (86), and the connector (55) and the storage chamber (48) are in communication. So
If a seal failure occurs even at one location, the effect may be increased as a whole.

[0003]

<A> The present invention is to suppress a change in the internal pressure of the connector chamber. <B> Another object of the present invention is to prevent foreign matter from entering the storage chamber before fitting the connector.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a hydraulic pressure control device for controlling a vehicle by controlling an electromagnetic hydraulic pressure valve. A storage member, a connector member attached to the storage member, a storage cover attached to the storage member, a control board disposed in a substrate storage chamber formed by the storage member and the storage cover, and a part of the storage member. An external terminal is mounted on the control board, one end of the external terminal is disposed in a connector chamber formed by the housing member and the connector member, and an electric cable is mounted on the connector member and connected to the other end of the external terminal. And a filter disposed between the substrate storage chamber and the external space and between the connector chamber and the external space, and through which gas passes and liquid does not pass. That, in the fluid pressure control device.

[0005]

Embodiments of the present invention will be described below with reference to the drawings.

<A> Outline of hydraulic pressure control device The hydraulic pressure control device controls the pressure of a vehicle. For example, an anti-lock brake (A) for avoiding wheel lock is provided.
The present invention relates to a control device that performs brake control such as BS), traction control (TCS), and braking force distribution control (EBD).

[0007] The functional configuration of the hydraulic control device includes, for example, a hydraulic unit 20 and an electronic control unit 30 as shown in FIG. The electronic control unit 30 includes the wheel speed sensor 3
The wheel speed, the wheel acceleration / deceleration, the estimated vehicle speed, the slip ratio, and the like are obtained from the signal 1, and a brake control command is issued. The hydraulic unit 20 operates each of the electromagnetic hydraulic valves such as the inlet valve 23 and the outlet valve 24 based on a control command from the electronic control unit 30 to control the wheel cylinders 14 of the front wheels and the rear wheels 1 to 4. Control hydraulic pressure. The electronic control unit 30 can have a configuration of a dedicated hardware device or a general computer device such as a microcomputer.

The hydraulic unit 20 is shown in detail in FIG.
The example of piping is shown. The transmission circuit of the hydraulic pressure generated by the brake pedal 11, the master cylinder 12, and the main reservoir 13 is constituted by two flow paths, and one first hydraulic circuit 21 is connected to the right front wheel 2 and the left rear wheel 3, and the other. The independent second hydraulic circuit 22 is connected to the left front wheel 1 and the right rear wheel 4. Each channel is
The main hydraulic pressure paths I and I connecting the wheel cylinders 14 of the respective wheels via the master cylinder 12 and the inlet valve 23 of the electromagnetic hydraulic valve.
I, a return passage 29 returning from the wheel cylinder 14 of each wheel to the main hydraulic passage I through an outlet valve 24 of an electromagnetic hydraulic valve, an auxiliary reservoir 27, and a pump 25;
And the opening and closing of the outlet valve 24 and the pump 25 to perform predetermined brake control on each wheel. The auxiliary reservoir 27 stores brake fluid, the check valve 28 prevents backflow, and the motor 26 controls the drive of the pump 25.

<B> Hydraulic Block The hydraulic controller has a shape as shown in FIGS. 2 to 5, for example, and mainly includes a hydraulic block, a housing member, and a holding member for a connector member. The hydraulic block 40 forms a part of the hydraulic unit 20, and is formed of, for example, a resin block body, has a hole formed therein, an electromagnetic hydraulic valve such as an inlet valve 23 and an outlet valve 24, and a main hydraulic flow valve. Road I, II, motor 26
, A pump 25 and the like are arranged, and the inlet of the hole is sealed with a plug member 41. A part of the motor 26 protrudes from one surface of the hydraulic block 40, and electromagnetic portions 43 of a plurality of electromagnetic hydraulic valves from the other surface.
And the motor electrode 261 protrudes.

The hydraulic block 40 has a motor 26 disposed on the rear surface, an opening for mounting a plurality of electromagnetic hydraulic valves on the front surface, and an electromagnetic section 43 constituting the electromagnetic hydraulic valve having, for example, two rows. Attached in four rows. Inside the hydraulic block 40, there are formed a hydraulic pump 25 and a plurality of hydraulic passages that operate in response to driving of a motor. A port is formed in the upper surface of the hydraulic block 40, and a pipe from the master cylinder is connected to the port. The hydraulic pressure block 40 is provided with a connection port of a pipe connected to each wheel.

The coil is disposed around the electromagnetic portion 43 of the electromagnetic hydraulic valve, and forms a coil assembly 42 for the electromagnetic hydraulic valve. The coil terminal 421 and the motor electrode 261 are connected to the control board 32. The coil 44 is manufactured by winding a wire around a bobbin and molding the periphery thereof with a resin. Coil terminals 421 are connected to both ends of the wire of the coil 44.

<C> Storage Member The storage member 50 is hermetically mounted on the hydraulic block 40 and stores the components of the hydraulic control device. For example, a coil 44 for driving the electromagnetic section 43 of the electromagnetic hydraulic valve is provided. And a control board 32 on which the electronic control unit 30 is arranged.

A coil storage chamber 541 is formed between the hydraulic block 40 and the storage member 50. The coil 44 is disposed in the coil storage chamber 441 and around the electromagnetic portion 43 of the electromagnetic hydraulic valve protruding from the hydraulic block 40, and becomes the coil assembly 42 for the electromagnetic hydraulic valve.

A storage cover 51 is hermetically attached to the storage member 50, and a substrate storage chamber 542 is formed between the storage member 50 and the storage cover 51. The control board 50 is mounted in the board storage chamber 542 with the holder 33. The storage member 50 is hermetically attached to the hydraulic block 40. The coil storage room 541 and the substrate storage room 542 form the storage room 54 as a whole.

An electric circuit for the electronic control unit is formed on the control board 32, and the external terminal 34, the motor electrode 261 and the coil terminal 421 are electrically connected to the outside of the vehicle brake fluid pressure control device. Is done.

<D> Connector Member The connector member 52 is located at the end of the housing member 50 and is connected to the outside of the vehicle brake fluid pressure control device by the connector 60.
This is the place where they are electrically connected. The external terminal 34 penetrates a part of the storage member 50, one end is connected to the control board 32, and the other end is arranged on the connector member 52 side. The connector 60 is attached to the connector member 52. The connector has an electric cable 61 and is electrically connected to the external terminal 34. Connector member 52 and connector 60
A connector chamber 55 is formed therebetween. Connector member 52
And the connector 60 are hermetically connected.

<E> Filter The filter 53 has a property of allowing gas to pass therethrough between the substrate storage chamber 542 and the external space and between the connector chamber 55 and the external space and blocking the liquid (ventilating and waterproofing). Material)
And is disposed near the space between the storage member 50 and the connector member 52. The filter 53 is disposed, for example, as shown in FIGS. 2 and 4 so as to straddle both spaces of the connector chamber 55 and the substrate storage chamber 542 at an end of the storage member 50 that partitions the connector chamber 55 and the substrate storage chamber 542. You. For example, the substrate storage room 5
42 and an external space, and between the connector chamber 55 and the external space, a communication hole 56 is formed.
6, one filter 53 is disposed, and the filter holding member 5
Hold at 31.

By arranging the filter 53 in this manner, both the connector chamber 55 and the substrate storage chamber 542 have the same pressure as the outside air pressure. As a result, there is no change in the pressure inside the chamber, so that one cause of the deterioration of the sealing performance between the hydraulic block 40 and the storage member 50 or between the storage member 50 and the connector 60 is eliminated. Further, suction of water from the insulating tube of the electric cable 61 attached to the connector 60, the shield rubber 62 of the electric cable 61, and the shield rubber 62 between the connector 60 and the connector member 52 does not occur.
Further, since no internal pressure is generated at the time of fitting the connector, a large connector insertion force is not required. Moreover, since the connector chamber 55 and the board storage chamber 542 are independent spaces,
There is no mutual movement of foreign matter.

[0019]

According to the present invention, the following effects can be obtained. <A> The present invention can suppress a change in the internal pressure of the connector chamber. <B> Further, the present invention can prevent intrusion of foreign matter before fitting of the connector.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of functions of a hydraulic control device.

FIG. 2 is a partial cross-sectional view of a plane of the hydraulic control device.

FIG. 3 is a partial cross-sectional view of a side surface of the hydraulic pressure control device.

FIG. 4 is an explanatory view of a connector section of the hydraulic pressure control device.

FIG. 5 is a schematic side view of a hydraulic control device.

[Explanation of symbols]

 11 Brake pedal 12 Master cylinder 13 Main reservoir 14 Wheel cylinder 20 Hydraulic unit 21 First hydraulic circuit 22 Second hydraulic circuit 23 Inlet valve 24 Outlet valve 25 Pump 26 Motor 261 Electrode for motor 30 Electronic control unit 31 Wheel speed sensor 32 Control board 33 Holder 34 External terminal 40 Hydraulic block 41・ Plug member 42 ・ ・ Coil assembly for electromagnetic hydraulic valve 421 ・ Coil terminal 43 ・ ・ Electromagnetic part 44 ・ ・ Coil 50 ・ ・ Storage member 51 ・ ・ Storage cover 52 ・ ・ Connector member 53 ・ ・ Filter 531 ・ Filter holding member 54 ··· Storage room 541 · Coil storage room 542 · Board storage room 55 · · Connector room 56 · · Communication hole 60 · · Connector 61 · · Electric cable 6 ... rubber seal

Continued on the front page (72) Inventor Takayasu Murai 9163-13 Kama, Asahi-shi, Chiba F-term in Nisshinbo Industries, Inc. Chiba Plant (reference) 3D046 BB00 BB28 BB29 CC02 DD04 EE01 KK13 LL00 LL23

Claims (1)

[Claims] 1. A hydraulic pressure control device for controlling a vehicle by controlling an electromagnetic hydraulic valve, comprising: a hydraulic block in which a plurality of electromagnetic hydraulic valves are arranged; a storage member attached to the hydraulic block; A connector member to be attached, a storage cover to be attached to the storage member, a control board disposed in a substrate storage chamber formed by the storage member and the storage cover, and a part penetrating the storage member, and one end attached to the control substrate. An external terminal disposed in a connector chamber having the other end formed by the housing member and the connector member; a connector having an electric cable attached to the connector member and connected to the other end of the external terminal; A liquid pressure control device, comprising: a filter disposed between the external space and between the connector chamber and the external space, and having a gas-permeable and liquid-impermeable filter.