JPH08148037A - Wire harness - Google Patents

Abstract

PURPOSE: To improve workability in work of piercing a through part such as a through part between a door and a car body. CONSTITUTION: A flat cable 20, integrally forming into a parallel bend shape a plurality of electric wires 21 with an insulation coating, is provided. A multiplex communication unit 2 of connecting switches 10 and a multiplex communication unit 3 of connecting a plurality of electric equipments 11, 12, 13, 14 are connected to one end part of the flat cable 20. A multiplex communication unit 1 of connecting a plurality of electric equipments 5, 6, 7, 8 is connected to the other end part of the flat cable 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness such as an automobile door harness, and more particularly to a wire harness for improving workability of a penetration work such as a penetration part between a door and a vehicle body.

[0002]

2. Description of the Related Art For example, a wire harness used for an automobile door harness or the like is formed by bundling a plurality of electric wires, and the electric wires are branched at appropriate positions.
It is common to connect a plurality of electric devices. However, in the case of such a wire harness, the cross section is substantially circular, and it is difficult to reduce the thickness dimension, so that the window material housed in the door cannot be avoided when laying in the door of the automobile. However, it is necessary to dispose the window material so as to avoid the storage space, and there is a problem that the laying extension increases.

Therefore, recently, a wire harness has been proposed which utilizes a flat cable in which a plurality of electric wires are integrated in a parallel strip shape by an insulating coating. FIG. 4 is a diagram showing a wire harness of the example.
00 is installed so as to stretch around the entire interior of the door D, and one end thereof is provided inside the body B of the automobile.

FIG. 5 is an overall view showing the wire harness 200, and FIG. 6 is a wiring diagram of the wire harness of FIG. As shown in FIGS. 5 and 6, the wire harness 200 includes first and second trunk portions 22a formed by a flat cable 20 in which a plurality of electric wires 21, 21, ... 22b and the first of these,
First to ninth branch portions 23, 24, 25, 2 formed by branching one side end portion of the second trunk portions 22a, 22b into a plurality of portions.
6, 27, 28, 29, 30, 31 and the first trunk 22
, a branch portion 23, 2 by connecting two or more of the plurality of electric wires 21, 21, ...
The first joint device 32 electrically short-circuiting between the four and the plurality of electric wires 21, 21, ... Which are provided in the second trunk portion 22b and constitute the second trunk portion 22b are connected to each other, and the branch portion 23 is connected. ,
And a second joint device 33 that electrically short-circuits between the two. The electric wire 21 is a multi-stranded wire.

Further, as shown in FIG. 4, the respective branch portions 24, 25, 26, 28, 2 excluding the first and fifth branch portions 23, 27.
Electrical equipment (not shown) provided on the door D (remote control actuator RH, tweeter speaker RH, front speaker RH, power window motor FR / RH, door control motor FR / RH & door control switch RH, door key switch & door control switch RH, courtesy lamp FR / RH) 1st to 7th connectors C1, C2, C3, C4, C5,
C6 and C7 are provided. An eighth connector C8 connected to a cowl wire (not shown) in the body B is provided at an end portion of the first trunk portion 22a, and the second trunk portion 2a is provided.
At the end of 2b, a ninth connector C9 connected to a power window regulator master switch (not shown) in the door D is provided.

The first to fourth branch portions 23, 24, 25, 2
6 has branched from the 1st trunk part 22a in the same 1st branch part 34, the 1st adhesive tape 35 is affixed to the 1st branch part 34, and the 1st branch part 34 is , First
Each branch angle is fixed and held by the adhesive tape 35. Similarly, the first, fifth, and sixth branch portions 23, 27, and 28 have the same second branch portion from the second trunk portion 22b.
Of the second branch portion 36.
Also in the above, the second adhesive tape 38 is adhered, and the respective branch angles are fixed and held.

Further, the first to third clips 39, 4 are provided on the first trunk portion 22a and the first and fifth branch portions 23, 27.
0 and 41 are attached and attached to the door D by the clips 39, 40 and 41, respectively.

Further, as shown in FIGS. 4 and 7, the first trunk portion 22a located between the body B and the door D of the wire harness 200 is covered with a grommet G so that it can be bent. In the vicinity of the grommet G mounting portion of the first trunk portion 22a, the tape T is wound to fix the first trunk portion 22a to the grommet G as shown in FIG. Further, as shown in FIG. 7, the body B and the door D are formed with harness penetrating portions H1 and H2, and the harness penetrating portions H1 and H2 form elongated holes in the vertical direction. The first trunk portion 22a covered with the grommet G penetrates the harness penetrating portions H1 and H2 and the inside of the door D to the body B.
It is inserted inside.

Since the wire harness as described above uses a flat cable in which a plurality of electric wires are integrated in a parallel strip shape with an insulating coating, the thickness can be reduced. Therefore, this wire harness does not occupy an installation space in its thickness direction. Therefore, for example, when laying in a door of an automobile, it can be installed in parallel with the storage space of the window material housed in the door. I can. This allows
The installation length can be reduced and the installation work can be simplified as compared with a wire harness having a substantially circular cross section that must avoid a storage space for window materials.

[0010]

However, even such a wire harness has the following unsolved problems. That is, since the wire harness 200 uses a flat cable in which a plurality of electric wires are integrated in a parallel strip shape by insulating coating, the width dimension is large. Therefore, as shown in FIG. 7, in order to insert the first trunk portion 22a covered with the grommet G of the wire harness 200 from the inside of the door D into the inside of the body B, the harness penetrating portion provided in the body B and the door D. H1 and H2 are large oblong holes. However, the harness penetration portions H1 and H2 are large elongated holes, and the first trunk portion 2 covered with the grommet G
Since the width dimension of 2a is large, in the work of penetrating the first trunk portion 22a covered with the grommet G, the contact area between the grommet G and the harness penetrating portions H1 and H2 is large,
Therefore, the resistance due to the contact was large. This made the penetration work difficult.

In view of the above circumstances, it is an object of the present invention to provide a wire harness capable of improving workability of a penetrating work such as a penetrating part of a door and a vehicle body.

[0012]

A wire harness according to claim 1 is a wire harness comprising a flat cable in which a plurality of electric wires are integrated in parallel strips by an insulating coating, and one end of the flat cable. Is connected to a multiplex communication unit to which a signal input circuit is connected, and the other end of the flat cable is connected to a multiplex communication unit to which a plurality of loads are connected. A multiplex communication unit including a communication line between units, a power supply line, and a ground line, to which the signal input circuit is connected, is based on a signal input from the signal input circuit, and the plurality of units are connected via the communication line. A signal is output to the multiplex communication unit to which the load is connected, and the multiplex communication unit to which the plurality of loads are connected, based on the signal,
It is characterized in that the load is operated.

[0013]

In the wire harness according to the first aspect, the flat cable has a communication line between the multiplex communication units, a power line,
Since it is equipped with a ground wire, it does not require an electric wire for each load, unlike the conventional case. Therefore, the number of electric wires can be reduced as compared with the conventional wire harness including a flat cable.

[0014]

An embodiment of the present invention will be described below with reference to the drawings. The same members as those of the conventional wire harness 200 shown in FIGS. 4 to 7 are designated by the same reference numerals, and the description thereof will be omitted.

FIGS. 1, 2 and 3 are views showing an embodiment of the wire harness of the present invention.
00 is attached to the second trunk portion 22b of the conventional wire harness 200 shown in FIG. 4 via the ninth connector C9.
The first multiplex communication unit 1 shown in FIG. 7 is provided, and the harness penetration portions H1 and H2 of the conventional wire harness 200 shown in FIG.
To the first trunk portion 22a which is inserted from the inside of the door D into the inside of the body B through the eighth connector C8,
As shown in FIG. 1, the second and third multiplex communication units 2 and 3 are connected to each other.

The first multiplex communication unit 1 is integrally formed with a power window regulator / master switch (not shown) of the door D shown in FIG. 4, and the first multiplex communication unit 1 includes the door shown in FIG. D first connector C1
1, a plurality of electric devices 5, 6, 7, and 8 serving as loads are connected, including a remote control actuator RH (auxiliary device of the electric mirror) provided by reference numeral 5 in FIG. The second multiplex communication unit 2 is a remote control unit provided in the first multiplex communication unit 1.
A switch 10 such as a switch of the actuator RH (auxiliary machine for electric mirror) 5 is connected.

The third multiplex communication unit 3 includes a plurality of electric devices 11 and 1 as loads, including the power window motor 11 for the passenger door (not shown) instead of the door D.
2, 13, 14 are connected.

Further, between the first multiplex communication unit 1, the second multiplex communication unit 2 and the third multiplex communication unit 3, a communication line 21A provided on the flat cable 20,
It is connected by a power supply line 21C and a ground line 21D. The power supply line 21C is connected to the power supply, and the ground line 21D
Is grounded.

Since the flat cable 20 of the wire harness 100 is provided with the multiplex communication units 1, 2, and 3 as described above, the communication line 21A, the power supply line 21C, and the ground line 21.
By D, the first, second and third multiplex communication units 1,
It is possible to exchange signals between two and three, and based on the signals, the electric devices 5, 6, 7, 8, 11, 12 connected to the first and third multiplex communication units 1, 3 respectively. 1
The drive control of 3 and 14 can be performed. Therefore, the first trunk portion 22a of the flat cable 20 is
As shown in FIG. 3, the communication line 21A, the power supply line 21C, the ground line 21D, and the electric devices 5, 6, 7, 8, 11, 12 connected to the first and third multiplex communication units 1 and 3, 1
The electric wire 21 is connected to an electric device other than the electric wires 3 and 14.

As shown in FIG. 3, the second branch portion 24 is formed by further branching from the first branch portion 23, which is branched from the second trunk portion 22b. Therefore, as shown in FIG. In the conventional wire harness 200 shown, the first trunk portion 22
The first joint device 32 that short-circuits the first and second branch portions 23 and 24 of a is not necessary.

Next, each electric device 5, 6, 7, 8, 11, 12, 13, 1 by the wire harness 100 shown in FIG.
The operation of No. 4 will be described.

First, the remote control actuator RH (auxiliary device for electric mirror) 5 is picked up as one load connected to the first multiplex communication unit 1. The switch 10 of the electric mirror is the second multiplex communication unit 2
It is connected to the.

For example, when the switch 10 for turning up the electric mirror (not shown) is turned on, the second multiplex communication unit 2 receives the signal from the switch 10 and sends the first signal through the communication line 21A. And outputs a signal to the multiplex communication unit 1. Then, the first multiplex communication unit 1
Controls the remote control actuator RH (auxiliary device of the electric mirror) 5 so that the electric mirror (not shown) is turned up based on the signal. This allows the electric mirror (not shown) to be directed upward.

Further, a power window regulator (not shown) provided integrally with the first multiplex communication unit 1
By the master switch, the first multiplex communication unit 1
When a switch signal for lowering the power window of the passenger seat is input to the first multiplex communication unit 1, the first multiplex communication unit 1 outputs a signal to the third multiplex communication unit 3 via the communication line 21A based on the signal. . Then, the third multiplex communication unit 3 drives and controls the power window motor 11 so as to lower the power window (not shown) based on the signal. As a result, the power window (not shown) can be lowered.

In addition to the above examples, electric equipment 6 as a load connected to the first and third multiplex communication units 1 and 3,
7, 8, 12, 13, and 14 can be operated by exchanging signals via the communication line 21A as described above.

Therefore, the first trunk portion 22a of the flat cable 20 has the electric devices 5, 6, 7, as in the conventional case.
No wires are required for every 8, 11, 12, 13, 14. Therefore, the number of the electric wires 21 can be reduced as compared with the wire harness 200 including the conventional flat cable, and thus the width dimension of the wire harness 100 can be shortened.

Then, as shown in FIG. 7, the first trunk portion 22a of the wire harness 100 on which the grommet G is covered.
For inserting the inside of the door D into the inside of the body B, the harness penetrating portions H1 and H2 provided in the body B and the door D.
Can be a small slot. Since the harness penetrating portions H1 and H2 are small long holes and the width dimension of the first trunk portion 22a covered with the grommet G is small, in the penetrating operation of the first trunk portion 22a covered with the grommet G, The contact area between the grommet G and the harness penetrating portions H1 and H2 can be reduced. Therefore, the resistance due to the contact becomes small. Therefore, it is possible to improve the workability of the penetration work to the penetration part such as the penetration part of the door and the vehicle body.

In the above embodiment, the automobile door harness has been described as an example, but any wire harness 100 can be applied as long as it is inserted into the penetrating portion.

[0029]

According to the wire harness of the first aspect of the present invention, the number of electric wires can be reduced as compared with the conventional wire harness made of a flat cable, so that the width dimension of the wire harness can be shortened. Can be done. Therefore,
It is possible to improve workability of penetration work into a penetration part such as a penetration part of a door and a vehicle body.

[Brief description of drawings]

FIG. 1 is a schematic view showing an overall view of a wire harness of the present invention.

FIG. 2 is a diagram showing a flat cable of the wire harness of the present invention.

FIG. 3 is a wiring diagram of the flat cable of FIG.

FIG. 4 is a view showing a conventional wire harness built in a door of an automobile.

5 is an enlarged view showing the wire harness of FIG. 4. FIG.

FIG. 6 is a wiring diagram of the wire harness of FIG.

FIG. 7 is a diagram showing a trunk portion of a wire harness that is inserted from a through portion of a door to a through portion of a body.

[Explanation of symbols]

1, 2, 3 ... Multiplex communication unit, 5 ... Remote control actuator RH (load), 6, 7, 8 ... Electric equipment (load), 10 ... Switch (signal input circuit), 11
… Power window motor (load), 12, 13, 14…
Electrical equipment (load), 20 ... Flat cable, 21 ... Electric wire, 21A ... Communication wire, 21C ... Power supply wire, 21D ... Ground wire.

Claims (1)

[Claims] 1. A wire harness comprising a flat cable (20) in which a plurality of electric wires (21) are integrated in a parallel strip shape by an insulating coating, wherein a signal input circuit () is provided at one end of the flat cable. 10) is connected to the multiplex communication unit (2, 1), and at the other end of the flat cable, a plurality of loads (5, 6, 7, 8,
11, 12, 13, 14) are connected to the multiplex communication unit (1, 3), and the flat cable includes a communication line (21A) between the multiplex communication units and a power line (2).
1C), a ground wire (21D), and the multiplex communication unit to which the signal input circuit is connected is based on a signal input from the signal input circuit, and the plurality of loads are connected via the communication line. A wire harness that outputs a signal to a connected multiplex communication unit, and the multiplex communication unit to which the plurality of loads are connected operates the load based on the signals.