JPH0332953A - Electronic device for vehicle - Google Patents

Abstract

PURPOSE:To simplify wiring construction by centralizing various types of electronic control units inside an instrument panel in the constitution wherein the electronic control units are connected to each part of a vehicle via a wire harness for the control thereof. CONSTITUTION:ECU's for ESC (skid control device) 2, ECT (transmission control device) 3, EFI (fuel injection control device) 4 and TRC (traction control device) 5 are respectively arranged inside an instrument panel forward of a driver's seat in the cabin 1a of a vehicle 1. The aforesaid ECU's are connected to a central box 8 as well laid within the instrument panel via a wire harness 6, thereby enabling inter-connection among ECU' via the central box 8. Furthermore, the wire harness 6 for a fuse, a relay, a switch, an indicator and the like, and other units and the like in an engine room is drawn from the central box 8, and led to the predetermined position.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vehicle electronic device, and more specifically, a vehicle electronic device comprising various electronic control units (ECUs) that control various parts of a vehicle. It is related to the device.

[Conventional technology]

Recently, vehicles such as passenger cars have become more sophisticated and individualized, and as a result, many electronic control units are being installed.

FIG. 8 is a simplified plan view of a conventional vehicle equipped with a large number of ECUs. ESC (Elec), which electronically controls the skid of
tronic 5kid Control) 2. E CT that controls the transmission of the microcomputer using a microcomputer.
(Electronic Controlled T
transmission) 3, E F I (Electro), which controls the fuel supply to the engine by computer.
nic Fuel Injection) 4 are distributed and arranged. In addition, the trunk room 1b of the vehicle
Inside is a traction control system (TRC) that controls engine output and braking force to improve vehicle acceleration and stability.
Control System) 5 is installed.

The above ECT3 and EFI4 transmit the engine speed signal to TR
C5, ESC2, EFI4, and ECT3 are the signal lines for inputting the vehicle speed signal from the vehicle speed sensor, ESC2 and TRC5 are the left and right front wheel vehicle speed signals, and ECT3, EFI4, and TRC5 are the signal lines for inputting the throttle opening signal, respectively, and the signal lines from ECT3 to E
FI 4 engine control signal, TRC5 to ESC
In addition to signal lines for sending signals to 2, fuses,
A wire harness (W/H) 6 consisting of relays, switches, indicators, signal lines to other units provided in the engine room IC, etc. is self-wired.

Further, a joint portion 7 is arranged at a branch portion of the wire harness 6.

[Problem to be solved by the invention]

As mentioned above, in conventional vehicle electronic devices, various E
The CU is distributed and installed in each part of the vehicle, and the ECU
In order to send and receive signals between the ECUs, the wire harness 6 consisting of signal lines wired between the ECUs becomes complicated.

For this reason, it is necessary to install each ECU in each part of the vehicle, which results in poor work efficiency.In addition, the number of wire harness circuits increases, and the diameter and weight of the floor harness 6a in particular increases, resulting in a reduction in the interior space of the vehicle. This resulted in deterioration of the assembly work.

In addition, the number of joints 7 that branch the wire harness 6 increases, which increases the number of man-hours for manufacturing the wire harness 6, increases the length of the wire harness, and increases the number of connecting points for connectors that connect the wire harnesses to each other, resulting in high costs. was inviting.

Furthermore, since the ECUs are dispersed, for example, during maintenance, the dispersed ECUs must be inspected one after another, resulting in poor maintainability.

Therefore, the present invention not only improves the workability of assembling an electronic control unit and a wire harness to a vehicle, but also reduces joints, shortens the length of the wire harness, and reduces the number of connector connection points between the wire harnesses, thereby reducing costs. An object of the present invention is to provide an electronic device for a vehicle that can reduce the amount of energy used and improve maintainability.

[Means to solve the problem]

In order to solve the above problems, the present invention provides an electronic device for a vehicle, which is an electronic device for a vehicle in which various electronic control units that control various parts of the vehicle and various parts of the vehicle are interconnected by a wire harness. , the various electronic control units mentioned above are arranged centrally inside the instrument panel.

In addition, in order to solve the above-mentioned problems, an electronic device for a vehicle according to the present invention projects a display image of a display device that displays the driving status of the vehicle at the instrument display position of the instrument panel, and displays the reflected image to the driver. A connector for an electronic control unit in which a reflective member that reflects in a direction is attached, the various electronic control units are centrally arranged in a space behind the reflective member, and the concentration box is detachably attached to the concentration box. The main feature is that it has a connector that is connectable to and detachable from the central ponox, and main air wiring that electrically connects the electronic control unit 7 mounted on the central ponox.

In order to solve the above-mentioned problems, the present invention provides a vehicle electronic device in which various electronic control units that control various parts of the vehicle are interconnected with each part of the vehicle through a wire harness. A reflective member that reflects the displayed image of the display device that displays the driving status of the vehicle and reflects the reflected image in the direction of the driver is detachably installed so as to cover the opening formed at the instrument display position of the instrument panel. mounting, the electronic control units are arranged in a concentrated manner in the space behind the reflecting member, and a concentration box for removably mounting the various electronic control units is arranged inside the instrument panel. It is a feature.

[Effect]

In the above configuration, the various electronic control units that control each part of the vehicle are centrally arranged inside the instrument panel, so the wires and wires that control each part of the vehicle are placed in a concentrated manner inside the instrument panel. No complications arise,
The electronic control unit can be installed in one place, the number of circuits in the wire harness and the number of joints that branch the wire harness are reduced, the length of the wire harness is shortened, and the connectors that connect the wire harnesses to each other are reduced. There are fewer connection points.

In addition, a reflective member is installed at the instrument display position on the instrument panel to reflect the display image of the vehicle driving status display and reflect the reflected image in the direction of the driver, and a connector is connected behind the reflector plate. A central box into which the electronic control unit can be attached and detached is provided so that the electronic control unit can be detachably placed in the large space formed behind the instrument display position on the instrument panel.
In addition, a reflective member that reflects the displayed image of the display device that displays the driving status of the vehicle and reflects the reflected image in the direction of the driver is removably attached so as to close the opening formed at the instrument display position of the instrument panel. By removing the reflective member, you can easily inspect the electronic control unit in one place.

Furthermore, since the central box has electrical wiring that electrically connects the electronic control units installed in the central box, the wire harness that connects the electronic control units to each other can be largely omitted.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a diagram showing an embodiment of a vehicle electronic device according to the present invention, and the same reference numerals are given to the same parts as those described above with reference to FIG. In FIG. 1, inside the instrument panel (not shown) in front of the driver's seat in the cabin 1a of a vehicle 1, there are ECUs ESC2, ECT3, EFI4, and TRC5, and these ECUs are connected to a wire harness 6. In addition, a centralization box 8 for connecting these ECUs to each other is also arranged. From this central box 8, a wire harness (W
/H) 6 has been pulled out and wired in a predetermined position.

Figures 2 and 3 are the above ESC2, ECT3, EFI4
and a side sectional view and an exploded perspective view showing a more specific structure of each ECU of the TRC 5 and the centralization box 8. In the figure, 1d is an instrument panel in front of the driver's seat, and the instrument panel 1d is operated. An opening 1d+ is formed at the instrument display position in front of the seat. A reflector unit 11 having a reflector 11a whose reflective surface faces the driver sitting in the driver's seat is detachably attached to the frontage 1dt. The reflecting plate 11a has a rotating shaft 11 so that the facing angle of the reflecting surface with respect to the driver can be adjusted.
It is rotatably supported about b. Note that ld2 is a hood that prevents direct light from entering the reflection plate 11a, and le
is the steering shaft.

A space S is formed between the reflector unit) 11 and a part If of the vehicle body 1, and in this space S there is a concentration box 8 attached to the part If of the vehicle body, and a concentration box 8 attached to the body part If of the vehicle 1. ESC2, ECT3, which are detachably attached to box 8,
An ECU consisting of an EFI4 and a TRC5 is accommodated.

As shown in the exploded perspective view of FIG. 4, the concentration box 8 is composed of a plurality of connectors 81 and a main body 82 to which the connectors are detachably attached. The main body 82 is formed by integrally molding an insulating material such as a resin, and has mounting holes 82a formed through the front surface to the back surface for removably mounting a plurality of connectors 81 thereon. A plurality of copper-plated electrical wirings 82b are formed on the back surface of the main body 82 to electrically connect the mounting holes 82a. The electrical wiring 82b extends to the wall inside the mounting hole 82a, and the electrical wiring 82b extended to this wall and the mounting hole 8
A part of the terminal 81b exposed from the hole 81a formed in the outer peripheral surface of the connector 81 attached to the connector 2a is electrically connected to the terminal 81b. The terminal 81b has a structure as shown in the enlarged view of FIG. 5, and is provided at the end of the wire harness drawn into the connector 81, and is connected to the portion 81b1 exposed from the hole 81a and the male terminal of each ECU. and a female terminal portion 81b2.

In order to allow the connector 81 to be detachably attached to the attachment hole 82a, an engagement claw 81c is formed in the connector 81, and an engagement hole 82c is formed in the main body 82.

Further, a mounting piece 82d for attaching the main body 82 to a portion 1F of the vehicle body is integrally formed with the main body 82. Further, in order to selectively electrically interconnect any of the plurality of electrical wirings 82b, a buspar 82e as shown in FIG.
is now used.

The connector 81 of the centralization box 8 has a corresponding EC
A U connector (not shown) is removably connected to the connector of each ECU, and for this reason, each ECU connector has a male terminal (
(not shown) is provided. EFI4 in the ECU is
In addition to the connectors connected to the two connectors 81 of the centralization box 8, there are two connectors 4a+ and 43z for directly outputting electrical signals without going through the centralization box 8.

The ECUs 2 to 5 installed in the central box 8 are sandwiched between the main body 82 and a fixing plate 9 which is removably fixed to the main body 8 by a screw shaft or the like.
Fixed.

Note that 6b to 6d are wire harnesses, particularly 6d is a cowl wire harness. Further, 61 and 62 are protectors that protect the cowl wire harness and the instrument panel wire harness, respectively, and 1g is an air duct.

The reflector 11a of the reflector unit 11 installed at the instrument display position as described above has a display on the reflective surface of the reflector 11a above the steering shaft cover le', as shown in FIG. A display image of the display device 12 whose surfaces are arranged to face each other is projected, and the reflected image is visually recognized by the driver, thereby providing an instrument display indicating the driving status of the vehicle. In the case of an instrument display having this configuration, only the reflection plate 11a is required on the instrument panel ld side. Therefore, the space S is formed between the instrument panel ld and the part 1F of the vehicle body, and the concentration box 8 and the ECUs 2 to 5 can be placed in this space S.

In the above configuration, all ECUs 2 to 5 are connected using the central box 8 inside the instrument panel ld.
Since the ECUs are centrally located, the ECU can be installed in one place, improving ECU workability. Also,
Since the wire harness 6 is routed centrally around the central box 8, signals can be sent and received between the ECUs, compared to a case where the ECUs 2 to 5 are distributed and installed in each part of the vehicle 1. Therefore, it is not necessary to route the wire harness 6 between the ECUs, and the number of wire harness circuits increases.In particular, the diameter and weight of the floor harness 6a can be reduced to expand the interior space and make it easier to assemble it into the vehicle. improve. In addition, the number of joint parts 7 that branch the wire harness 6 is reduced, the number of man-hours for manufacturing the wire harness 6 is reduced, the length of the wire harness is shortened, and the number of connection points for connectors that connect the wire harnesses to each other is reduced, resulting in cost savings. can be reduced.

In particular, remove the reflector unit ll and insert the fixing plate 9 into the main body 82 through the opening 1d of the instrument panel 1d.
By removing it from the central box 8, all ECUs become removable from the central box 8. Therefore, all ECUs can be inspected at one place during maintenance, and after inspection, the ECUs can be installed in the central box 8, the fixing plate 9 can be attached, and the reflector unit 11 can be attached to its original position. Since it is finished, maintainability is improved.

〔effect〕

As explained above, according to the present invention, the various electronic control units that control each part of the vehicle are arranged centrally inside the instrument panel, so there is no complication in the wire harness, and the electronic control units Installation can be done in one place, the number of circuits in the wire harness and the number of joints that branch out the wire harness are reduced, the length of the wire harness is shortened, and there are fewer joint points for connectors that connect the wire harnesses, reducing costs. You can try to bring it down.

In addition, the electronic control unit can be removably placed in the large space formed behind the instrument display position, and the electronic control unit can be easily inspected by removing the reflective member attached to the instrument panel's instrument display position. can be done centrally in one place.

Furthermore, since the central box has electrical wiring that electrically connects the electronic control units installed in the central box, the wire harness that connects the electronic control units can be largely omitted.

[Brief explanation of drawings]

FIG. 1 is a simplified plan view showing one embodiment of a vehicle electronic device according to the present invention incorporated into a vehicle, FIG. 2 is a side view showing main parts of the vehicle electronic device according to the present invention, and FIG. Figure 4 is an exploded perspective view of the concentration box in Figures 2 and 3; Figures 5 and 6 are enlarged perspective views of a portion of Figure 4; Figure 7 is a simplified diagram showing an example of the configuration of a vehicle display device configured using the reflector in FIGS. 2 and 3; FIG. 8 is a plan view showing a simplified configuration of a conventional vehicle electronic device. . 1...Vehicle, 1d...Instrument panel, 1
d′...opening, lla...reflection member (reflection member),
12... Display unit, 2.3.4.5... Electronic control unit node (ESC, ECT, EF I, TRC), 6.
...Wire harness, 8...Concentration box, 81.
...Connector, 82...Electrical wiring

Claims (5)

[Claims] (1) A vehicle electronic device in which various electronic control units that control various parts of the vehicle are interconnected with each part of the vehicle through a wire harness, in which the various electronic control units are concentrated inside the instrument panel. An electronic device for a vehicle, characterized in that the electronic device is arranged as follows. (2) An electronic device for a vehicle that interconnects various electronic control units that control various parts of the vehicle with each part of the vehicle through a wire harness, and displays the driving status of the vehicle at the instrument display position on the instrument panel. A reflecting member is installed to reflect the displayed image of the display device and reflect the reflected image in the direction of the driver, and the various electronic control units are arranged in a concentrated manner in the space behind the reflecting member. Vehicle electronic equipment. (3) The electronic device for a vehicle according to claim (2), wherein the reflective member is detachably attached to the instrument panel so as to close an opening formed at an instrument display position of the instrument panel. (4) The vehicle electronic device according to any one of claims (1) to (3), further comprising a central box for removably mounting the various electronic control units on the inside of the instrument panel. (5) The concentration box has a connector that is removably connected to the connector of the electronic control unit that is detachably attached to the concentration box, and electrical wiring that electrically connects the attached electronic control units. The vehicle electronic device according to claim 4, further comprising: