JP2000225902A - Connecting structure between electric wire group of vehicular wire harness and connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To independently reduce the number of manufacturing harnesses by increasing a harness capable of being shared to be used even if a vehicle type or a grade are different. SOLUTION: In a connecting structured of an electric wire group of a wire harness of vehicles which are different in a vehicle type or a grade and a connecter, one end of the electric wire group is connected to the same first connector, and the other end of the electric wire group is connected to the same second connector with an electric wire having a different connecting circuit to form a shared harness 11 of the same item number. In an electric wire group of a peculiar harness of another item number connected to the second connector, the electric wire having a different connecting circuit is connected to a different circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between an electric wire group and a connector of a wire harness for an automobile, and more particularly, to a common connection structure between an electric wire group and a connector even if an automobile is different from 2WD and 4WD. Into the same parts.

[0002]

2. Description of the Related Art In many cases, wire harnesses for automobiles have different specifications depending on a two-wheel drive vehicle (hereinafter abbreviated as 2WD) and a four-wheel drive vehicle (hereinafter abbreviated as 4WD). For example, an ECU (engine control unit) that controls the engine and an EFI (electronic fuel injection device)
Since the specifications of the wire harness connected to the 2WD and the 4WD are different from each other, the 2W shown in FIG.
It is manufactured by being divided into a dedicated A part number for D and a dedicated B part number for 4WD shown in FIG. 2WD above
The harness of the A part number for A is further connected to the harness of the C part number dedicated to 2WD via a connector, and the harness of the B part number for 4WD is further connected to the harness of the D part number dedicated to 4WD via the connector. The harnesses of the D part number and the C part number are significantly different from each other in the circuit configuration, such as the types of sensors to be connected. As described above, the 2WD harness including the A part number and the C part number harness and the 4WD harness including the B part number and the D part number harness are illustrated in FIG.
As shown in (B), the engine room harness (front harness) W / H-1 and W / H-1
H-2 is manufactured.

[0003] The wire groups of the A part number and the B part number (four electric wires W) which are the above-mentioned different part numbers are connected in the same form to the first connector 2 connected to the unit 1 including the ECU and the EFI, respectively. . However, due to the difference in the control method, the other end of all (four) of the wire groups of the A part number is connected to the second connector 5, whereas three of the four wire groups of the B part number are connected. Are connected to the second connector 5, but since one wire w is connected to the ground,
The ground terminal 6 is connected without being connected to the connector 5.

[0004]

As described above, 2WD
With 4WD, it is necessary to manufacture two types of parts (harness) of A part number and B part number only by the factor of one circuit whether or not one circuit wire is grounded. In addition, for example, if there are four specifications of A / C (air conditioner), wire harnesses of 4 specifications are required for both 2WD and 4WD, and a total of 8 product numbers (4 × 2 = 8) must be manufactured. Become. Thus, 2WD and 4
In WD, the number of parts is doubled only by the presence or absence of the earth circuit,
There is a problem that the number of manufacturing steps and management steps are increased, and the cost is increased accordingly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to make it possible to manufacture the same part even when most circuits are the same and only a small number of circuits such as one or two are different. I have.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a connection structure between a wire group and a connector of a wire harness for an automobile in which different types and grades of vehicles are arranged. One end is connected to the same first connector, and the other end of the electric wire group is connected to the same second connector including electric wires having different connection circuits to form a common harness of the same part number. In a wire group of a dedicated harness of a different product number to be connected to a wire harness for a vehicle, a wire structure different from the connection circuit described above is connected to a different circuit. I have.

More specifically, for example, in a wire harness routed to a 2WD and 4WD automobile, respectively, the first connector to which the 2WD and 4WD wire groups are connected is an ECU (Engine Control Unit). ) And E
A 2WD dedicated harness is connected to the second connector to which the other end of the wire group is connected, and a 2WD dedicated harness is connected to the second connector to which the other end of the wire group is connected, and a 4WD dedicated to 4WD is connected. The electric wire to which the harness is connected and the connection circuit is different is connected to another circuit electric wire by the 2WD exclusive harness, while being connected to the earth connection electric wire by the 4WD exclusive harness.

As described above, by connecting the wire terminals of a small number of different circuits together with other wire groups to the same second connector, even if the small number of circuits are different, a common harness of the same product number can be obtained. Can be manufactured. Harnesses connected to this common harness with the same part number cannot be used as the same harness of the same part number because the attached sensors are significantly different. Are processed on the dedicated harness side of the different part numbers. Therefore, the A part number and the B part number of the conventional example described above can be used as the common harness of the same part number, and the exclusive harnesses of the C part number and the D part number which are respectively connected to the harnesses of the same part number have the conventional A part number and B part number. Circuits that differ from part numbers are processed as different circuits.

As described above, only the presence or absence of the ground circuit is required.
It is not necessary to use a separate part due to the difference between a circuit and a small number of circuits such as two circuits. By sharing parts, a common harness can be formed and the number of part numbers can be reduced.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a wire harness 1 for 2WD.
0 and FIG. 2 show a wire harness 20 for 4WD. The 2WD wire harness 10 is a common harness 11 and 2
The 4WD wire harness 20 includes the shared harness 11 and the 4WD dedicated harness 2.
It consists of 1. That is, the 2WD wire harness 10 and the 4WD wire harness 20 share and use the harness 11 of the same product number.

The 2WD-only harness 12 and the 4WD-only harness 21 connected to the same common harness 11 are:
Sensors and the like to be connected are significantly different between 2WD and 4WD, so that they must be manufactured as separate product numbers. That is, the 2WD dedicated harness 12 has one 2WD
Although the dedicated sensor 13 is provided, the 4WD dedicated harness 21 needs to be provided with two 4WD dedicated sensors 23 and 24.

As shown in FIG. 3A for 2WD and FIG. 3B for 4WD, the shared harness 11 used commonly for 2WD and 4WD has the same configuration. One end of each of the four wire groups W is connected to a first connector 15 connected to a connector 30a provided in a unit 30 including an ECU (engine control unit) and an EFI (engine fuel injection unit). The other end of the electric wire group W is connected to the second connector 16 and uses the common harness 11 having exactly the same configuration.

[0013] Shared harness 11 and 4WD used in 2WD
Of the four wire groups W of the shared harness 11 used in
The 2WD harness 10 is connected to a 2WD dedicated harness 12 via a second connector 16 in the 2WD harness 10;
In the 4WD harness 20, the 4WD harness 21 connected via the second connector 16 is connected to electric wires forming the same circuit.

In the electric wire group W of the common harness 11, the remaining one electric wire (w1 for 2WD and w2 for 4WD)
The 2WD-only harness 12 and the 4WD-only harnesses 12 and 21 connected to the second connector 16 are connected to different circuits. That is, the 2WD-only harness 12 is connected to the electric wire w3 of another circuit, whereas the 4WD-only harness 21 is connected to the ground connection electric wire w4. A ground terminal 6 is connected to a terminal of the ground connection wire w4.

With the above-described configuration, the harnesses which are made as different product numbers only depending on the presence or absence of the ground circuit can be replaced with the same common harness 11.
Can be configured as The presence or absence of the earth circuit is determined by the special harnesses 12 and 2 which have to be changed to different part numbers depending on attached parts and the like.
In order to discriminate between the harnesses of 1 and 2, conventionally, four types of harnesses, including 2WD and 4WD, were required, but can be reduced to three types of harnesses.

In the case where not only one of the above ground circuits is present but also a small number of circuits is different, for example, the presence or absence of the ground circuit is different from the other one, these circuits are used in the same manner as in the above embodiment. If the dedicated harness is connected to the dedicated harness and has to deal with the difference in the circuit, the harness having a small number of circuits can be integrated into the shared harness having the same circuit configuration, and the number of harness part numbers can be reduced.

[0017]

As is apparent from the above description, according to the present invention, when only one circuit differs depending on the presence or absence of the ground circuit, or when one or two wire connection circuits differ, the same circuit is used. Since the integrated circuit is integrated into one part number (parts) as a shared harness, and the above-mentioned different circuit is connected to the electric wire of another circuit by a dedicated harness of another part number connected to the same part number, a ground circuit Harnesses that differ only in a small number of circuits, such as the presence or absence of the same, can be integrated as the same harness. Therefore, the number of parts can be reduced, and as a result, the number of steps for manufacturing and managing the harness can be reduced, and the cost can be reduced accordingly.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a 2WD wire harness.

FIG. 2 is a schematic view showing a 4WD wire harness.

FIGS. 3A and 3B are schematic diagrams showing harnesses having the same circuit for 2WD and 4WD.

4A is a schematic diagram showing a conventional 2WD wire harness, and FIG. 4B is a schematic diagram showing a conventional 4WD wire harness.

FIGS. 5A and 5B are schematic diagrams showing a conventional 2WD and 4WD wire harness bound to another wire harness.

[Explanation of symbols]

 Reference Signs List 6 ground terminal 10 2WD wire harness 11 2WD and 4WD shared harness 12 2WD dedicated harness 15 1st connector 16 2nd connector 20 4WD wire harness 21 4WD dedicated harness 22, 23, 24 Sensor w1, w2 Different circuit wire w4 Ground connection wire

Claims (2)

[Claims] 1. A connection structure of a wire group and a connector of a wire harness for an automobile in which different types and grades of vehicles are arranged, wherein one end of the wire group is connected to the same first connector, and the wires are connected to the same first connector. The other end of the group is connected to the same second connector including the wire having a different connection circuit to form a common harness of the same product number, and is connected to the second connector in a wire group of a dedicated harness of a different product number. A connection structure of a wire group and a connector of an automobile wire harness, wherein wires having different circuits are connected to different circuits. 2. A wire harness routed to a 2WD (two-wheel drive) and 4WD (four-wheel drive) automobile, respectively, wherein the wire groups of the shared harness for the 2WD and 4WD are connected. The first connector is ECU (engine control unit) and EFI (electronic fuel injection device)
And the second connector to which the other end of the wire group is connected,
In 2WD, a 2WD-only harness is connected, in 4WD, a 4WD-only harness is connected, and wires different in the connection circuit are connected to other circuit wires in the 2WD-only harness, while ground wires are connected to the 4WD-only harness. The connection structure of a wire group and a connector of the wire harness for an automobile according to claim 1 which are connected.