JPH05139274A - Integrated structure of hydraulic unit and electronic control unit - Google Patents

Abstract

PURPOSE:To utilize space effectively, shorten wire harness and improve work efficiency by forming a hydraulic unit, two relays and an electronic control unit, constituting an ABS control device, into integrated structure through a junction block. CONSTITUTION:The integrated structure of an ABS control device is formed of a hydraulic unit 10, a junction block 20, an electronic control unit 30, and a fail-safe relay 31 and a motor relay 32 cooperating with the electronic control unit 30. The hydraulic unit 10 is provided with a motor 14, solenoid valves 13 and a hydraulic pump built in a cubic block 11. The junction block 20 is installed on the hydraulic unit 10, and the electronic control unit 30, fail-safe relay 31 and motor relay 32 are integrally assembled thereon. The junction block 20 is provided with bus bar wiring and connectors 21, 22, 23 and the like required at the time of integration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated structure of a hydraulic actuator of a brake braking device for braking a vehicle wheel and an electronic control unit.

[0002]

2. Description of the Related Art An anticlock brake control device (hereinafter referred to as an ABS control device) is remarkably popular as a brake braking device for braking wheels. The ABS control device repeats the operation of detecting the slip condition of the wheel by the wheel speed sensor at the time of brake braking, temporarily reducing the hydraulic pressure to loosen the brake when the wheel is locked or the wheel tends to be locked, and re-braking when the slip ratio decreases. It is a control device that maximizes the braking efficiency.

A typical example of such an ABS control device is shown in FIGS. The ABS control device includes wheel speed sensors S ₁ to
S _4, ABS control unit ECU, warning lamp WL, hydraulic unit HU, the master cylinder MC, wheel cylinders WC, made from the brake pedal BP, etc. (Fig. 4
reference). As shown in FIG. 3, the wheel speed sensors S _{1 to} S ₄ are attached to the respective wheels, the hydraulic unit HU is provided in the engine room near the brake pedal, and the ABS control unit E is provided.
The CU is provided in the passenger compartment, and the ABS control unit ECU and the hydraulic unit HU are electrically connected by a wire harness.

[0004]

As described above, in the conventional ABS control device, the hydraulic pressure unit is arranged in the engine room, the ABS control unit is arranged in the vehicle compartment, and the solenoid valve and the motor included in the hydraulic pressure unit are connected to the hydraulic pressure unit. A long wire harness was wired for the electrical connection of the. Wiring using such a long wire harness may cause a short circuit between the harness and the body due to the biting of the body of the car, and there is little space for disposing the ABS control unit in the passenger compartment, and system wiring is troublesome. Was inconvenient.

In the present invention, paying attention to the problems in the conventional ABS control device, an electronic control unit and two relays constituting the ABS control device are stacked and integrated on a hydraulic unit via a junction block. , Effective use of space, shortening of wire harness,
An object of the present invention is to provide an integrated structure capable of improving work efficiency and the like.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention relates to an electromagnetic valve in which a brake hydraulic pressure to a wheel cylinder of each wheel is a hydraulic pressure controlled by opening and closing an electromagnetic valve,
Hydraulic unit consisting of hydraulic pump and motor, solenoid valve,
Two relays that perform switching control of the drive current of the motor, and a control command signal to the solenoid valve, the motor, and the relay to calculate the wheel speed, the slip ratio, etc. based on the wheel speed information from the wheel speed sensor by a predetermined program. And an electronic control unit for outputting the solenoid valve, a motor, and a junction block having a large number of connection terminals and connection wiring for intermediately connecting electrical wiring to the two relays, and the electronic control unit and two relays. Is an integrated structure of a hydraulic unit and an electronic control unit, which is integrated with the hydraulic unit via a junction block.

[0007]

Since the present invention has the above-mentioned integrated structure, the actuator such as the solenoid valve which operates by the command signal from the electronic control unit and the electronic control unit are connected in the block by the shortened wire harness. It Therefore, the space can be effectively used and the efficiency of the assembling work can be improved.

[0008]

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

FIG. 1 is an exploded perspective view of the integrated structure of the embodiment. This integrated structure comprises a hydraulic unit 10, a junction block 20 provided on the unit, an electronic control unit 30 mounted on the unit, a fail safe relay 31 and a motor relay 32 cooperating with the electronic control unit 30.

The hydraulic unit 10 comprises a hydraulic pump (see FIG. 2) incorporated in the illustrated left side cube block 11, a plurality of sets of solenoid valves 13, and a motor 14 mounted on the side surface of the cube block 11. The wheel cylinder hydraulic pressure is controlled via the solenoid valve 13. Reference numerals 15 to 18 are wire harnesses for electric wiring, 19a and 19b are connectors attached to the outer periphery of the motor case, and 15a and 18a are connectors for the wire harnesses 15 and 18.

The junction block 20 is provided with bus bar wiring and has a T-shaped base plate as shown in the drawing. Inside the base plate, the mating connectors 21, 22 of the connectors 19a, 19b and solenoid valves are provided. A connector 23 and the like for the wire harness 15 from 13 are provided.

As shown in FIG. 2, the electronic control unit 30
Calculates the wheel speed, slip ratio, etc. by a predetermined program in the circuit based on the wheel speed pulse information from the wheel speed sensors S _{1 to} S ₄ to judge whether the wheel is in a locked state or in a locked tendency. A control signal for pressurizing, holding, depressurizing, etc. is output to control the opening / closing of the solenoid valve 13, and is composed of a microcomputer mounted on a circuit board.

The fail-safe relay 31 is provided to shut off the power source of the solenoid valve 13 when the electronic control unit 30 detects a failure by self-diagnosis, and the motor relay 32 is provided to switch the motor. Note that FIG.
33 is a diode connector, which is used as the diode 33a in FIG. 34 is a warning lamp.

In the integrated structure of the embodiment, the hydraulic unit 10, the junction block 20, the electronic control unit 30, the fail safe relay 31, and the motor relay 32 shown in FIG. 1 are respectively stacked to form an integrated block. .. In this case, the wire harness 15 is connected to the connector 23.
The wire harness 18 is previously connected to the electronic control unit 30 by the respective connectors 15a and 18a, and the connectors 19a and 19b are fitted to the mating connectors 21 and 22 of the junction block 20 during vehicle assembly. Connected.

The wire harness 15 is the electronic control unit 3
A drive current according to a control signal of 0 is sent to the solenoid valve 13, the wire harness 15 ′ connects the fail-safe relay 31 and the solenoid valve 13, and the wire harnesses 16 and 17 send a signal from the wheel speed sensor to the electronic control unit 30. Connection line to send,
The connection wire between the electronic control unit 30 and the outside, and the wire harness 18 supplies the drive current from the motor relay 32 to the motor 14
It is a connection line sent to.

When the above unit and block are integrated, waterproof covers 41 and 42 are provided above and below the junction block 20 for waterproofing electric equipment.

In the hydraulic unit, the two relays and the electronic control unit having the integrated structure as described above, the electronic control unit and the solenoid valve, and the wire harness between the motor relay and the motor are short wirings in the block. Moreover, since a junction block is used between the electronic control unit and the fail-safe relay or motor relay, no wire harness is required. If this integrated block is installed in, for example, the engine room, it does not require an extra space in the vehicle compartment, the work is rationalized, and the maintenance and inspection can be intensively performed.

[0018]

As described above in detail, in the present invention, the hydraulic unit and the electronic control unit are integrated through the junction block, so that the entire block has a very simple and compact structure. If it is installed in the vehicle interior, the extra space that was required in the conventional vehicle interior is unnecessary, the wire harness connecting the electronic control unit and the solenoid valve, the motor relay and the motor is shortened, and the electronic control unit and the fail-safe relay, Since no wire harness between the motor relay and the motor relay is required, assembly work is rationalized, and various advantages such as easy maintenance and inspection can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a unit having an integrated structure according to an embodiment.

FIG. 2 is a block diagram of an electric circuit corresponding to the integrated structural unit of FIG.

FIG. 3 is a schematic diagram of the entire layout of a conventional ABS control device.

FIG. 4 is a diagram showing an electric / hydraulic pressure control command system of a conventional ABS control device.

[Explanation of symbols]

 10 Hydraulic Unit 11 Cube Block 13 Solenoid Valve 14 Motor 20 Junction Block 21, 22, 23 Connector 30 Electronic Control Unit 31 Fail-Safe Relay 32 Motor Relay 33 Diode Connector 34 Warning Lamp

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[Procedure amendment]

[Submission date] July 15, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

In the integrated structure of the embodiment, the hydraulic unit 10, the junction block 20, the electronic control unit 30, the fail safe relay 31, and the motor relay 32 shown in FIG. 1 are respectively stacked to form an integrated block. .. In this case, the wire harness 15 is connected to the connector 23.
To the wire harness 18, the junction block 20
Are connected by pre Me 1 8a to the connector 19a when the vehicle assembling, 19b are junction block 20
The mating connectors 21 and 22 are fitted and connected.

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (1)

[Claims] 1. A solenoid valve for controlling a brake fluid pressure of a wheel cylinder of each wheel to a fluid pressure controlled by opening and closing a solenoid valve,
Hydraulic unit consisting of hydraulic pump and motor, solenoid valve,
Two relays that perform switching control of the drive current of the motor, and a control command signal to the solenoid valve, the motor, and the relay to calculate the wheel speed, the slip ratio, etc. based on the wheel speed information from the wheel speed sensor by a predetermined program. And an electronic control unit for outputting the solenoid valve, a motor, and a junction block having a large number of connection terminals and connection wiring for intermediately connecting electrical wiring to the two relays, and the electronic control unit and two relays. An integrated structure of a hydraulic unit and an electronic control unit that is integrated with a hydraulic unit via a junction block.