JPH10208567A - Manufacture of wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assemble a wire harness by using electrical wires cut in identical length. SOLUTION: Out of electrical wires to be used for the wire harnesses W/H to be assembled, a plural number of electrical wires are cut into a size identical in length on a basis of the longest electrical wire, when each terminal is pressed into contact with the ends of the electrical wire, and when the electrical wire with which each terminal is pressed into contact, is wired along the route of each specified electrical wire holding fixture 11, in a place where the length of a wiring route is shorter than the length of the cut-out electrical wire, the excess length portion of the electrical wire is hanged over an excess length absorbing means 12 provided for a place close to the electrical wire holding fixture 11 so as to be adjusted in dimension, and the excess length portion is thereby absorbed by fastening the excess length portion with a tape to the main line portion of the bundle of the wired electrical wire.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a wire harness for an automobile or the like by laying the wire harness on a wiring board along a predetermined path to assemble the wiring harness into a predetermined form. By using electric wires having a length, the man-hours in the electric wire cutting and crimping processes in the previous process can be reduced.

[0002]

2. Description of the Related Art Generally, a wire harness W / H is shown in FIG.
As shown in (D), electric wires W connected to each system
Has a plurality of electric wires W1, W2, W3 branched and connected in accordance with a predetermined wiring route to a plurality of connectors C1, C2, C3, C4. And each electric wire W1, W2, W3,
As shown in FIG. 7A, each connector C1, C2, C
3 and C4 have different wire lengths L1, L2, and L3, respectively, and are laid along a plurality of wire holders 2 erected on the wiring board 1, so that a predetermined form of wire harness W /
H is assembled.

[0003]

Therefore, in the pre-process of cutting the wire W and crimping the terminal T to each terminal, the wires W1, W2, W3 are different in wire length L1, L2 in advance depending on the connection length. L2 and L3 must be cut, so that many man-hours such as setup change are required, and various wire lengths L1 and L
2. Storage and management of the electric wire W cut into L3 also required trouble. Furthermore, in the case of coloring the electric wires W according to the wiring route or changing the electric wire diameter in accordance with the allowable current, there is a problem that the types of the electric wires W are further increased and the number of steps is significantly increased. .

The present invention has been made in view of the above-mentioned problems, and it is possible to equalize the lengths of a plurality of wires constituting a wire harness by absorbing an excess length of the wires when the wires are laid. Therefore, it is an object of the present invention to reduce the number of man-hours in the pre-process such as cutting and storage of electric wires.

[0005]

In order to solve the above-mentioned problems, according to the present invention, an electric wire is laid in a predetermined path along an electric wire holder erected on a wiring board. A method of manufacturing a wire harness in which the wire harness is assembled by cutting a plurality of wires of the same length based on the longest wire among wires used for the wire harness to be assembled, and connecting a terminal to an end of the wire. When wires are crimped and the terminals are crimped along the path of the predetermined wire holder, if the wiring path length is shorter than the cut length of the wire, an extra wire provided near the wire holder is provided. The extra length of the electric wire is hooked to the length absorbing means to adjust the dimensions, and the extra length is taped to the trunk portion of the laid wire bundle to absorb the extra length. To provide a method of manufacturing a wire harness There.

In the structure of the first aspect, when the wiring path length is shorter than the cut length of the electric wire, the electric wire is hooked on the extra length absorbing means at the time of wiring to make a U-turn so that the extra length is absorbed. The length of the wire can be adjusted according to the length of the wiring route. Therefore, in the electric wire cutting step which is performed before the wiring step, the electric wire length can be unified to the same length, so that there is no need to change the setup and the man-hour can be greatly reduced. Further, the storage and management of the cut and crimped wires can be simplified by unifying the wire length. In addition, the excess length can be easily processed by tape-fixing it to the trunk portion of the bundle of wires to be wired.

The surplus length absorbing means comprises an electric wire hooking device in which a plurality of electric wire hooking portions are arranged in a comb shape, and is provided at an arbitrary portion of the electric wire hooking portion in accordance with the size of the extra length of the electric wire. The dimensions are adjusted by hooking the excess length and making a U-turn (claim 2). Thereby, it is possible to easily cope with the change and adjustment of the required wire length.

The extra length absorbing means comprises an electric wire hooking tool in which an L-shaped electric wire hooking portion is attached to the support rod so as to be adjustable in and out of the horizontal direction in accordance with the extra length of the electric wire. The dimension may be adjusted by hooking the portion on the wire hooking portion and making a U-turn (claim 3). Further, the extra length absorbing means is provided with a wire hooking device having an inverted J-shaped wire hooking portion with respect to the wiring board so as to be able to adjust in and out in a vertical direction according to the size of the extra length of the wire. In other words, the extra length may be hooked on the wire hooking portion to make a U-turn so as to adjust the dimensions (claim 4). According to these configurations, the required wire length can be easily changed and adjusted, and after the adjustment, a simple operation of hooking the extra-long wire to one wire hooking portion enables a stable wire to be always provided. Extra length absorption can be performed.

[0009]

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

FIGS. 1 and 2 show a first embodiment of a method of assembling a wire harness.
A large number of wire holders 11A and 11B having U-shaped holding portions 11a for guiding the wire W along a predetermined path are erected on the wiring board 10 for assembling the wire. An extra length absorbing means 12 is provided near the holders 11A and 11B.

The surplus length absorbing means 12 is provided near the wire holders 11A and 11B located at a branch point of a branch line portion 14 branching from the trunk line portion 13 of the wire harness W / H.
0, and a wire hooking device 12 having a wire hooking portion 12b integrally provided on an upper portion of the shaft 12a.
c. The wire hooking portion 12b is formed of a thin rod capable of hooking the wire W via the wire holding members 11A and 11B in a U-turn shape. A plurality of wire hanging portions 12b are arranged in a comb shape.

Next, the wire harness W /
A method of assembling H will be described. For example, as shown in FIG. 7A, in the case of the wire harness W / H of FIG. 7C assembled using wires W1, W2, and W3 having three different wire lengths L1, L2, and L3. First, the electric wire W2 used for the longest route among the electric wires W used is used as a reference. The other wires W1 and W3 are also set to the same length, and the required number is cut by a cutting and crimping machine (not shown), and the terminal T is crimped to each terminal, and FIG.
, The wires W1, W2, W3 all having the same wire length L1
Prepare That is, (L2-L1) becomes W1 and (L2-L3) becomes the extra length in W3.

Next, the wire harness W is placed on the wiring board 10.
To assemble / H, as shown in FIG. 1 (B), the terminal W of one end is inserted into the predetermined cavity of the connector C1 at the position of the electric wire holder 11C. Subsequently, in the process of arranging the other end of the electric wire W1 along a predetermined wiring route via the electric wire holders 11A and 11B, as shown in FIG. Then, a half length of the extra length (L2-L1) is hooked to make a U-turn to absorb the extra length and adjust the dimensions. Thereafter, the terminal T is inserted into the connector C2 at the other end of the electric wire W1 at the position of the electric wire holder 11D.

Subsequently, as shown in FIG. 1C, the terminal T at one end of the second electric wire W2 is inserted into the connector C1, and the electric wire is laid through the electric wire holders 11A and 11B. The terminal T at the other end is inserted into the connector C3 at the position of the tool 11E. Finally, as shown in FIG.
When the terminal T at one end of the electric wire W3 is inserted into the connector C1, and the electric wire W
A half length of the extra length (L2-L3) is hooked on the wire hooking portion 12b of c to make a U-turn to absorb the extra length, and the terminal T is inserted into the connector C4 at the position of the electric wire holder 11F. .

After completing the wiring of the wire harness W / H in a predetermined form, the extra length (L2-L1) and the extra length (L2-L3) processed by the electric wires W1, W3 are completed.
With the tape T to the trunk 13 of the wire harness W / H.
Fix with. When the dimensions of the electric wires W1 and W3 are changed, the positions of the electric wires W1 and W3 hooked to the electric wire hooking portions 12b are shifted, so that the electric wires W1 and W3 can be adjusted according to the change in the extra length to be absorbed.

FIGS. 3 and 4 show a second embodiment, which is provided with extra length absorbing means 22 different from that of the first embodiment. The excess length absorbing means 22 is capable of adjusting a wire hooking portion 22a made of an L-shaped bar in a horizontal direction through a through hole formed above a support shaft 21b of the wire holders 21 (A) and 21 (B). , And the base of the wire hooking portion 22a is fixed to the support shaft 21b with a nut 22b.

The method of assembling the wire harness W / H using the excess length absorbing means 22 is basically the same as in the first embodiment. As shown in FIG. 4, the processing for the extra length of the electric wire W in the electric wire hooking tool 22c is performed, for example, for the extra length (L2-L).
When processing 1), the protruding length of the wire hooking portion 22a is adjusted to (L2−L1) / 2, and in this state, the wire W1 is hooked on the wire hooking portion 22a to make a U-turn, thereby providing an extra length ( L2-L1) is absorbed to adjust the dimensions. When finely adjusting the dimension of the extra length or when the dimension setting of the electric wire W1 is changed, the nut 22b
Can be accommodated by loosening and adjusting the protrusion dimension of the wire hooking portion 22a.

FIGS. 5 and 6 show a third embodiment.
A surplus length absorbing means 32 different from the second embodiment is provided.
The extra length absorbing means 32 is composed of an electric wire hooking tool 32c formed by bending the upper end of a support shaft 32a erected near the electric wire holders 11A and 11B in an inverted J shape. Support shaft 3
The lower end of 2a penetrates the wiring board 10 and is supported by a nut 32b so as to be able to adjust in and out in the vertical direction.

The method of assembling the wire harness W / H using the excess length absorbing means 32 is basically the same as in the first and second embodiments. As shown in FIG. 6, the processing for the extra length of the electric wire W in the extra length absorbing means 32 is performed, for example, for the extra length (L2
-L1), the projecting length of the wire hanging portion 32a is adjusted so that the distance from the wire holder 11 is (L2-L1) / 2, and in this state, the wire W2 is attached to the wire hanging portion 32a. And make a U-turn to allow extra length (L2-
L1). In addition, when fine adjustment of the dimension corresponding to the extra length or when the dimension setting of the electric wire W1 is changed, it is possible to respond by loosening the nut 32b and adjusting the projecting dimension of the support shaft 32a.

In each of the above embodiments, an example is shown in which three wires constituting the wire harness are used. However, the present invention can be similarly applied to three or more wires, and becomes a reference when a large number of wires are used. The electric wire length may be divided into a long group and a short group. Further, in each of the above embodiments, the example of unifying the length of the electric wire to be used has been described. In addition, by unifying the colors of the coatings of the electric wires to the same color, the types of the electric wires in the previous process can be further greatly reduced and the simplification can be further achieved.

[0021]

As is clear from the above description, in the method for manufacturing a wire harness according to the present invention, the lengths of electric wires constituting a predetermined wire harness can be unified to the same length. Work such as setup change in the wire cutting and crimping process and storage management by wire length can be greatly reduced.

[Brief description of the drawings]

FIGS. 1A to 1D are diagrams showing steps of a method for manufacturing a wire harness according to a first embodiment.

FIG. 2 is a diagram illustrating a use state of the excess length absorbing means of the first embodiment.

FIGS. 3A to 3C are diagrams illustrating steps of a method for manufacturing a wire harness according to a second embodiment.

FIG. 4 is a diagram illustrating a use state of a surplus length absorbing unit according to a second embodiment.

FIGS. 5A to 5C are diagrams illustrating steps of a method of manufacturing a wire harness according to a third embodiment.

FIG. 6 is a diagram illustrating a use state of a surplus length absorbing unit according to a third embodiment.

FIGS. 7A to 7D are views showing a conventional method of assembling a wire harness.

[Explanation of symbols]

 W / H Wire harness C1, C2, C3, C4 Connector L1, L2, L3 Wire length W1, W2, W3 Wire 10 Cloth board 11A, 11B Wire holder 12, 22, 32 Extra length absorbing means 12c, 22c, 32c Electric wire hook 13 Trunk line

Claims (4)

[Claims] 1. A method of manufacturing a wire harness, comprising: assembling a wire harness by laying a wire along a predetermined path along a wire holder installed on a wiring board, the wire harness being assembled. While cutting a plurality of wires of the same length based on the longest wire among the wires used for crimping, crimping the terminal to the end of the wire, and crimping the crimped wire to the path of the predetermined wire holder respectively. When laying along the wire, if the wiring path length is shorter than the cut length of the wire, hook the excess length of the wire onto the excess length absorbing means provided near the wire holder and adjust the size. A method for manufacturing a wire harness, characterized in that the excess length is absorbed by tape-fixing the excess length to a trunk portion of a laid wire bundle. 2. The surplus length absorbing means comprises an electric wire hook having a plurality of electric wire hooks arranged side by side in a comb shape. The method for manufacturing a wire harness according to claim 1, wherein the dimension is adjusted by hooking a surplus length to the part and making a U-turn. 3. The surplus length absorbing means comprises an electric wire hooking tool in which an L-shaped electric wire hooking portion is attached to a support rod so as to be adjustable in and out in a horizontal direction in accordance with the size of the extra length of the electric wire.
The method for manufacturing a wire harness according to claim 1, wherein the extra length is hooked on the wire hooking portion to make a U-turn to adjust the dimensions. 4. The apparatus according to claim 1, wherein the excess length absorbing means is provided with a reverse J
A wire hook having a wire-shaped hook portion is attached so that it can be adjusted vertically in and out according to the extra length of the wire, and the extra length is hooked on the wire hook portion to make a U-turn. The method for manufacturing a wire harness according to claim 1, wherein the dimensions are adjusted by causing the dimensions to be adjusted.