JP4082038B2 - Manufacturing method of wire harness using junction box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a shall relates to a method of manufacturing the wire harness with a di catcher down action box.
[0002]
[Prior art]
As shown in FIG. 6, the conventionally provided junction box has a connector housing portion 1a integrally formed on the outer surface of the case 1, and a connector (not shown) on the wire harness side is attached to the connector housing portion 1a. It is inserted from the outside and connected. The internal circuit of the junction box is configured by alternately laminating insulating plates and bus bars, and tabs protruding from the bus bars are projected into the connector housing portion 1a to form a branch circuit by the bus bars.
[0003]
In the junction box, the connection between the wire harness of the external circuit and the internal circuit is made via a connector that fits into the connector housing provided on the outer surface of the case, and the connector housing 1a is integrated with the case 1. Since it is molded, if there is a specification change on the connector side, it is necessary to newly install the case 1 even if one connector housing portion 1a is changed. Accordingly, other connector housing portions including the fuse housing portion are required. When the position change occurs, the entire circuit needs to be changed, and the entire junction box is redesigned.
On the other hand, even if the internal circuit on the junction box side is changed, the external connection terminals must be positioned in the connector housing portion that is a connection portion between the internal circuit and the external circuit, and thus the circuit design is restricted. It becomes.
[0004]
In view of this, the present applicant disclosed in Japanese Patent Application Laid-Open No. Hei 8-242518 and the like, as shown in FIG. 7, a part of the wire harness W / H1, W / H2, W / H3 is connectorless from the side of the junction box 1 ′. It has been proposed that the electric wires constituting the wire harnesses W / H1, W / H2, and W / H3 are directly inserted into the internal circuit.
[0005]
When the wire harnesses W / H1, W / H2, and W / H3 are inserted from the side surface of the junction box 1 ′ as an internal circuit without a connector as described above, there is no need to provide a connector housing in the junction box, and Since there is no need to connect the terminal to the connector on the wire harness side, the number of parts and connector connection work can be reduced, and design / change can be performed without being restricted by the connector housing portion.
[0006]
[Problems to be solved by the invention]
In order to manufacture the junction box integrally provided with the wire harness as described above, the required wire harness form must be formed by bundling or branching the electric wire extending from the junction box at a required position. In general, to assemble the required wire harness configuration, the wires are routed along the required path to the wiring jig standing on the flat work table, and the wires are bound at the required position. Has been done. However, it is difficult to handle the wires that are integrally extended from the junction box on the normal wire harness assembly work table because the junction box itself becomes an obstacle and the assembly workability is not good. It was.
[0007]
This invention is made | formed in view of an above-described problem, and makes it the subject to improve the workability | operativity of the operation | work which arranges the form of the some electric wire extended from a junction box, and comprises a wire harness.
[0008]
[Means for Solving the Problems]
To solve the above problems, the present onset Ming, causes extends the other end of the plurality of electric wires connected to the internal circuit of the junction box to the outside of the junction box, connector for each desired group at its end Is a method of manufacturing a wire harness using a junction box that forms a wire harness of a required form by bundling the electric wire and further branching at a required branch position ,
A receiving portion for positioning and holding the junction box, and a substrate that is vertically fixed to the receiving portion in a vertical state are provided, and the substrate is provided with a scale in the extending direction of the electric wires hanging from the junction box by its own weight. And using a manufacturing device with a positioning jig protruding at the required position,
While holding the junction box in the receiving part of the manufacturing apparatus, and suspended along the substrate extending from the junction box,
Next, a branching position and / or a binding position of the suspended electric wire is determined with reference to the positioning jig, and a required wire harness is formed by binding a required electric wire with a binding member at this position,
There is provided a method of manufacturing a wire harness using a junction box, wherein the dimension of the formed wire harness is inspected by a scale attached to the substrate .
[0009]
As the internal circuit of the junction box, in addition to the one using the electric wire itself extending from the junction box, the internal circuit is constituted by a bus bar, and the electric wire is connected to the bus bar by welding or pressure welding. Good. The positioning jig may be a simple rod-shaped tool, a tool having a U-shaped electric wire holding portion at the tip, or the like, as long as it can indicate the binding position and the branching position.
According to the said manufacturing method , the electric wire extended from the junction box hangs down with dead weight by hold | maintaining a junction box in the receiving part for positioning holding | maintenance. And, since the binding position and branching position of the suspended wires can be instructed by the positioning jig protruding from the board, the required wire harness configuration can be obtained by bundling the wires with binding members such as tie bands and tapes at this position. Is done.
[0010]
Incidentally, the junction box is manufactured wire harness integrally as described above, distribution preferably is of a type that is arranged in the center in the width direction of the engine room, the wire harness is on the left and right extended from the junction box Suitable for That is, the wire harness is distributed from the center to the left and right, so that the length of the wire harness can be set short, and when assembling, the length of the wire hanging from the receiving portion is shortened and the vertical work area is reduced. It will not be too high.
[0011]
On the substrate, since the graduated towards the extending direction of the electric wire, it can be by this scale examining the size of the wire harness. In this way, it is possible to easily inspect the location of each important point of the wire harness that is in the required form by the dimensions of each electric wire extending from the junction box and the bundling member, and inspection in the subsequent process is unnecessary. can do.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
Figure 1 shows a manufacturing apparatus 1 0 of the wire harness with engagement distearate catcher down action box to the invention. The manufacturing apparatus 10 is arranged on a vertically long frame 11 and an upper portion of the frame 11, a receiving portion 12 for positioning and holding the junction box 20, and a substrate erected and arranged below the receiving portion 12 along the frame 11. 13.
[0014]
As shown in FIG. 5, the product manufactured by the manufacturing apparatus 10 extends the other ends of the plurality of electric wires W connected to the internal circuit of the junction box 20 to the outside, and at the end thereof, a required part is provided. A connector C is attached to each group, the electric wires W are bundled for each group, and the wire harness W / H in a required form is integrated by branching at the required branch positions A1, A2,.
[0015]
The frame 11 is composed of a pair of leg portions 11b having a base plate 11a for attachment to the machine base at the lower end, and the leg portions 11b are suspended from the electric wires W suspended from the junction box 20 held by the receiving portion 12. It is set to the height dimension necessary for the state.
The receiving portion 12 is integrally provided between the upper end portions of the frame 11 and includes a side frame 12a and a bottom frame 12b that can be fitted and held from above with the junction box 20 placed horizontally.
[0016]
The substrate 13 is erected and fixed in a vertical state between the leg portions 11 b of the frame 11, and opposes the extending portion Wa of the electric wire W hanging from the lower surface side of the junction box 20 held by the receiving portion 12. In the substrate 13, the scale 13 a is displayed on the entire surface in the width direction corresponding to the direction in which the electric wire W hangs down by its own weight on the surface facing the extending portion Wa, and hangs down from the junction box 20. Key points such as the length of the electric wire W and the branch position A can be visually inspected.
[0017]
Further, the substrate 13 is provided with a positioning jig 14 protruding toward the extending portion Wa of the electric wire W. The positioning jig 14 projects in correspondence with these positions in order to indicate the branch positions A1, A2,... In the extending portion Wa and the binding position B where the electric wires W are bundled for each required group. As shown in FIG. 4 (B), the positioning jig 14 has a simple rod-like shape, or a U-shaped holding portion 14a for holding a plurality of electric wires W as shown in FIG. 4 (A). We use what we have.
[0018]
Next, a method of manufacturing the wire harness with di catcher down action box 20 will be described with reference to manufacturing apparatus 10 configured as described above.
First, as shown in FIG. 2, in the manufacturing process of the junction box 20, the electric wire W connected to the internal circuit is extended, and the extension portion Wa is fitted to the receiving portion 12 with the lower surface side facing. Hold the positioning. As a result, the electric wire W is suspended by its own weight while facing the substrate 13. Thereby, since the connector C side of a lower end is a free end, it will be in the state which is easy to handle.
[0019]
Next, as shown in FIGS. 4 (A) and 4 (B), the binding position B of the wires W to be grouped and the branch position A to be branched are specified according to the instruction of the positioning jig 14 protruding from the substrate 13. The electric wires W to be processed are collected.
Further, as shown in FIG. 4C, the electric wires Wb inserted between the connectors C without passing through the junction box 20 main body are also inserted into the respective connectors C by branching with the positioning jig 14 as a reference. The
Next, at the position indicated by the positioning jig 14, the electric wire W is bundled with a bundling member 15 such as a tie band or a tape, and the form of the required wire harness W / H is adjusted. In the formed wire harness W / H, the branch positions A1, A2,..., The binding positions B1, B2,..., The positions of the connectors C, and the like are visually confirmed by a scale 13a attached to the substrate 13. Perform an inspection. Thereby, the dimension inspection process in a post process can be simplified.
Thus, as shown in FIG. 5, the junction box 20 provided with the wire harness W / H made into the required form is obtained. Note that the wire harness W / H is wound with a tape around each bundle of electric wires W and attached with an exterior member such as a corrugated tube as necessary.
[0020]
【The invention's effect】
As apparent from the above description, according to the present invention, when manufacturing a wire harness with a di-catcher down action box, only positioned and fixed to the receiving portion of the junction box, processing the wire extended from the junction box A drooping state can be taken. And according to the instruction | indication of the positioning jig which protruded from the board | substrate, the wire harness of a required form can be comprised simply by bundling in a required position. Since these operations can be processed in a suspended state due to the weight of the electric wires, the workability can be greatly improved as compared with the conventional processing method in which the electric wires are arranged on a horizontal work table.
Moreover, since the position of each part of a wire harness can be test | inspected by attaching | subjecting a scale along the extension direction of an electric wire to a board | substrate, the dimension inspection process in a post process can also be simplified.
[Brief description of the drawings]
Is a perspective view of an apparatus for manufacturing a wire harness with engagement distearate catcher down action box to the present invention; FIG.
FIG. 2 is a perspective view of a junction box in which electric wires are extended.
FIG. 3 is a perspective view of a state in which a junction box is held in the manufacturing apparatus.
FIGS. 4A to 4C are partial perspective views showing a state in which a binding member is attached.
5 is a perspective view of the integrated wire harness manufactured with di-catcher down action box.
FIG. 6 is a diagram showing a conventional example.
FIG. 7 is a diagram showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Manufacturing apparatus 12 Receiving part 13 Substrate 13a Scale 14 Positioning jig 15 Bundling member W Electric wire Wa Extension part W / H Wire harness A Branching position B Bundling position

Claims (1)

The other end of the plurality of wires connected to the internal circuit of the junction box is extended to the outside of the junction box, and a connector is attached to the end of each of the required groups, and the wires are bundled together. A wire harness manufacturing method using a junction box that forms a wire harness of a required form by branching at a branch position ,
A receiving portion for positioning and holding the junction box, and a substrate that is vertically fixed to the receiving portion in a vertical state are provided, and the substrate is provided with a scale in the extending direction of the electric wires hanging from the junction box by its own weight. And using a manufacturing device with a positioning jig protruding at the required position,
While holding the junction box in the receiving part of the manufacturing apparatus, and suspended along the substrate extending from the junction box,
Next, a branching position and / or a binding position of the suspended electric wire is determined with reference to the positioning jig, and a required wire harness is formed by binding a required electric wire with a binding member at this position,
A method of manufacturing a wire harness using a junction box, wherein the dimension of the formed wire harness is inspected by a scale attached to the substrate.

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