JPH0230901B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electronic control device for a vehicle, and more particularly to an assembly structure for an electronic control device for a vehicle that is improved in terms of ease of assembling a wire harness.

<Conventional technology> Conventionally, in order to control in-vehicle equipment such as headlights, meters, and stoplights, it was necessary to wire a large number of wires inside the vehicle body, and these wires were assembled into a wire harness, which caused problems in assembly. I was trying to resolve it. However, in recent years, with the electronicization of vehicle control and the increasing number of in-vehicle devices,
The outer size of the wire harness has become enlarged, and problems such as ease of assembly and maintenance, and increase in vehicle weight have become problems.

Furthermore, various electronic control devices for vehicle control are
Due to its reliability, it is often mounted mainly inside the vehicle. Therefore, the signal wires connected to the engine and other equipment installed in the engine room must be bundled together as a wire harness and pass through the partition wall that separates the engine room and the passenger compartment. The number of man-hours required for assembly tends to be relatively large.

Therefore, by installing a junction box in the vehicle interior and in the engine room, and transmitting and receiving signals through both junction boxes, the wire harness that connects the vehicle interior and the engine compartment is integrated. Therefore, it is possible to reduce the number of man-hours required for assembling the wire harness. Alternatively, by installing multiplex communication units in the vehicle interior and engine room, and transmitting and receiving signals via both multiplex communication units, the number of signal lines connecting the vehicle interior and the engine room can be reduced. It is also possible to prevent the wire harness from becoming enlarged by reducing it as much as possible.

However, in either case, the increase in the number of parts such as the junction box or multiplex communication unit leads to an increase in parts cost.
It has not yet been widely adopted.

<Problems to be Solved by the Invention> In view of the problems of the prior art, the main object of the present invention is to improve the assemblability of the wire harness and to prevent local enlargement of the outer diameter of the wire harness. An object of the present invention is to provide a structure for assembling a vehicle electronic control device that can be avoided.

<Means for Solving the Problems> According to the present invention, in an assembly structure of a vehicle electronic control device that has a built-in CPU and controls the running of the vehicle, the electronic control device is , in the opening of the bulkhead that separates the engine room and the passenger compartment,
The front and rear ends thereof are attached so as to protrude toward each of the engine room and the vehicle interior, and have a coupler for connecting a wire harness on at least one of the engine room and the vehicle interior. This is achieved by providing an assembly structure for a vehicle electronic control device characterized by the following.

<Function> In this way, the electronic control device that controls the equipment mounted on the engine room side is installed so as to pass through the opening in the partition wall, and the electronic control device is mounted on the engine room side and/or the passenger compartment side. By providing a coupler in the engine compartment, the electronic control device can also be used as a junction box for the wire harness that connects the inside of the engine room and the passenger compartment, thereby reducing the number of man-hours required for arranging the wire harness.

<Embodiments> Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a layout diagram showing how a vehicle electronic control device according to the present invention is assembled into a vehicle. An electronic fuel injection control unit 1 and an antilock brake control unit 2, which are electronic control devices for a vehicle, are respectively attached to openings 3a and 3b formed at predetermined positions in a partition wall 3 that partitions an engine room and a vehicle interior. There are 4 batteries in the engine room.
A relay box 5 and an anti-lock brake modulator 6 are installed, and a junction box 7, a power window control unit 8, and a door lock control unit 9 are installed inside the vehicle.

The electronic fuel injection control unit 1 mainly controls the engine 10. The electronic fuel injection control unit 1 includes a fuel injector 11 that injects and supplies necessary fuel to the engine 10, and a fuel injector 11 that injects and supplies necessary fuel to the engine 10. Cooling water temperature sensor 1 that detects water temperature
2, and devices necessary for controlling the engine 10, such as an intake air temperature sensor 13 that detects the temperature of air supplied to the engine 10, are connected.

The anti-lock brake control unit 2 mainly controls the brakes, and the anti-lock brake control unit 2 includes wheel sensors 14, 15, 16, 17 for detecting the rotational speed of each wheel, and controls for each brake. An anti-lock brake modulator 6 is connected to control the power.

The junction box 7 collects and delivers wire harnesses that connect the relay box 5 installed in the engine compartment and devices mainly installed in the passenger compartment and rear of the vehicle. A power window control unit 8 and a door lock control unit 9 are connected to the cabin side of the junction box 7 via a wire harness 18 and a power line 19, and are also installed on an instrument panel (not shown). Switches are connected via a wire harness 20, and various devices (not shown) installed in the interior of the vehicle and at the rear of the vehicle are also connected via a wire harness 21.

Relay box 5 mainly supplies battery 4 to each device.
The relay box 5 houses a relay and a fuse, and is connected to the battery 4 via a power line 22, as well as to the headlights 24, 25 and 25 via a wire harness 23. It is connected to a cooling fan motor, etc. (not shown). Furthermore, relay box 5
The partition wall 3 is connected to the junction box 7 by a power line 26 and a wire harness 27, respectively.
are connected through holes formed in the

In the case of this embodiment, the anti-lock brake control unit 2 is provided with wire harness connection couplers 33 and 34 on the engine room side and the passenger compartment side, respectively, and is connected to equipment installed on the engine room side. A wire harness 28 is connected to a coupler 33 on the engine room side, and a wire harness 29 connected to equipment installed on the passenger compartment side is connected to a coupler 34 on the passenger compartment side. The electronic fuel injection control unit 1 is also provided with a wire harness connection coupler 35 on the engine room side, and the wire harness 30 connected to the detector and various devices installed in the engine 10 etc. is connected to the coupler 35. It is connected. Further, the electronic fuel injection control unit 1 and the antilock brake control unit 2 are connected to the relay box 5 by power lines 31 and 32, respectively, on the engine room side.

In this embodiment, as described above, the wire harness that is connected to the equipment installed in the engine room can be connected to each control unit only on the engine room side, so that the wire harness can be automatically attached. I can handle it.

<Effects of the Invention> As described above, according to the present invention, an electronic control device that controls equipment mounted on the engine room side is attached to an opening in a partition wall, and the electronic control device is mounted on the engine room side or in the vehicle. By installing a coupler on the indoor side, the wire harness itself does not need to pass through the partition wall, so the control device can be easily installed without impairing the partition wall's ability to block sound, heat, air, or water. , the number of man-hours required for arranging the wire harness is reduced, and the effect is extremely large. Furthermore, by reducing the amount of wire harnesses installed through the bulkhead, it is possible to avoid local enlargement of the outer diameter of the wire harnesses, which makes it easier to route the wire harnesses and improve various electronic controls. Mounting the device on a tower can also be facilitated.

[Brief explanation of drawings]

FIG. 1 is a layout diagram showing how a vehicle electronic control device according to the present invention is assembled into a vehicle. DESCRIPTION OF SYMBOLS 1... Electronic fuel injection control unit, 2... Antilock brake control unit, 3... Bulkhead, 3
a, 3b...opening, 4...battery, 5...relay box, 6...antilock brake modulator, 7...junction box, 8...
...Power window control unit, 9...Door lock control unit, 10...Engine, 11...Fuel injector, 12...Cooling water temperature sensor, 13...Intake air temperature sensor, 14-17...Wheel sensor, 18 ... Wire harness, 19 ... Power line, 20, 21 ... Wire harness, 22 ...
Power line, 23... Wire harness, 24, 25...
...Headlight, 26...Power line, 27-30...
...Wire harness, 31, 32...Power wire.

Claims (1)

[Scope of Claims] 1. In an assembly structure for a vehicle electronic control device that has a built-in CPU and controls the running of a vehicle, the electronic control device is installed in an opening in a partition wall that partitions an engine room and a vehicle compartment. , whose front and rear ends are attached so as to protrude toward each of the engine room and the vehicle interior, and have a coupler for connecting a wire harness on at least one of the engine room side and the vehicle interior side. An assembly structure for a vehicle electronic control device characterized by: