JPS63205010A - Manufacture of hard copper wire harness - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for manufacturing a hard copper wire harness as a wire assembly for an automobile.

(Prior art) Conventionally, the manufacturing method for wire harnesses is to pay out a predetermined length of insulated wire, usually consisting of stranded wires, cut it each time, peel the ends one by one, and then attach terminals, or After performing terminal processing and intermediate processing such as stripping the insulating coating of the parts and branching and connecting other electric wires, arrange them on the wiring board in an appropriate form corresponding to the mounting position of the in-vehicle electrical components, Furthermore, after concentrating these and wrapping them with tape,
This is done by attaching a connector housing to the terminal.

In addition, a head capable of traveling in the X-Y axes and equipped with a wire feeding mechanism is scanned over the wiring board, and conductive mild steel core wire is placed on a mat formed with an insulating material into the desired wire harness shape on the wiring board. A method of manufacturing a wire harness has been proposed in which the wire harness is routed and covered with an insulating material and fixed (Japanese Patent Publication No. 56-32721).

(Problems to be Solved by the Invention) However, in the manufacturing methods of wire harnesses using these known techniques, since the electric wires themselves are highly flexible and easily bent, it is difficult to maintain the wiring shape. This requires a presser jig, which increases the scale of the equipment, and requires a great deal of time and effort for terminal processing and intermediate processing. Furthermore, as the number of on-vehicle electrical components increases, the number of man-hours required to process them increases, and the wiring harness becomes larger and more complex.

The present invention has been made by focusing on the problems of the prior art, and simplifies the manufacturing method and equipment by using hard copper wires for the wires constituting the wire harness and bending them to match the vehicle body structure. It is an object of the present invention to provide a method for manufacturing a wire harness that improves accuracy and reduces required power by facilitating bend formation.

(Means for Solving the Problems) That is, the present invention locally localizes at least one location of a plurality of hard copper single wires (hard copper refers to hard copper or copper alloy in the present invention) before wiring. Manufacture of a hard copper wire wire harness by heating and annealing it, bending the annealed part to form it into a predetermined shape, wiring it to an insulating plate of the desired shape, and subjecting it to insulation coating and terminal treatment. It is the law.

The invention will now be described in detail, along with its operation, with reference to the accompanying drawings, in which exemplary embodiments are shown.

FIG. 1 shows a schematic perspective view of the apparatus used in the present invention.

In the figure, reference numeral 1 denotes a conductor constituting the wire harness of the present invention, which is made of a hard copper single wire. 2 is the bending part of the hard copper single wire 1,
3 is a supply IJ-) of the solid copper wire 1; 4 is a straightening roll; 5 is a straightening roll;
6 is a feed roll, 7 is an annealing machine, 8 is a cutter, 9 is a pengu device, 10 is a wiring plate made of an insulator, and 11 is a bent solid copper wire.

First, the hard copper single wire 1 fed out from the supply reel 3 is corrected for distortion, bending, etc. by the straightening roll 4, and then a predetermined bending part is determined by the length measuring roll 5. Next, it is sent forward by a feed roll 6, and only the bent portion 2 is locally heated and annealed by an annealing machine 7. As the annealing machine 7, an induction hardening machine, a spot welding machine, etc. can be used.The heating temperature and heating time as annealing conditions vary depending on the type of hard copper single wire, wire diameter, etc. It is preferable to set the conditions for obtaining a refractive state in advance.

Next, the hard copper single wire 1, which has been locally made into soft steel at the bending part, is fed out by the required wire length, and the part P near the tip is gripped by the gripper 13 of the pengu device 9, and then cut by the cutter 8. .

As shown in FIG. 2 in the direction of arrows in FIG.
On a table 12 installed movably in all directions in the y-yR and zz-z directions, there are gripping tools 13 each independently controlling the movement of the claws 14 in all directions within a predetermined movement distance range by a servo motor 15. It has a configuration in which a plurality of sets (5 sets in the illustrated example) are provided corresponding to the bending parts 2 of the hard copper lane 1.

The hard copper single wire 1 that has been fed out for the required wiring length is placed on the table 1.
With the claws 14 of the gripping tool 13 disposed at the frontmost part of the hard copper wire 1 gripping the gripping portion P of the solid copper wire 1, the table 12 moves forward and the wire is cut. The cut solid copper wire 1' is held by the claws 14 of all the holding tools 13. Next, nail 14
are driven by a servo motor 15 which is entirely controlled simultaneously, and the solid copper wire 1' is bent at the annealed bending portion 2 to form the solid copper wire 11 in a predetermined wiring shape.

The bent hard copper single wire 11 is then routed onto the wiring board 10. A plurality of grooves (or protrusions) (not shown) are formed on the wiring board 10 for wiring the hard copper single wires 11, and the plural hard copper single wires 11 bent by the above method are aligned and arranged. be searched. Next, the plurality of hard copper single wires 11 arranged and routed on the wiring board 10 are coated with insulation by filling with an insulating material, and terminal treatments such as terminal connections are performed to form the hard copper wire wire harness of the present invention. is manufactured.

(Other Embodiments) In the above embodiment, the wiring board 10 is formed into a flat plate shape, and the hard copper single wire 1' is also bent only in the X-Y axis direction. Alternatively, the wiring board may be an insulating board 16 having a three-dimensional shape that matches the structure of the vehicle body.

A plurality of grooves 17 are formed in the longitudinal direction of the insulating plate 16, and terminal accommodating chambers (holes) 19 are formed at the end edges and longitudinal side edges.
Connector parts 18a, 18b having a, 19b, 19c
, 18c are integrally formed. Such an insulating plate 1
6, the hard copper single wire 1 is heated and annealed at the bent portions 2, 2, . Thus, a bent hard copper single wire 20 is formed.

In addition, at the tip of the solid copper wire 20, there is a connector portion 18a at the edge.
A male terminal 21 for locking is welded. The hard copper single wires 20 to which the male terminals 21 are attached in this manner are placed in the grooves 17 of the insulating plate 16, and insulated and fixed by a method such as filling with an insulating resin. Further, the male terminal 21 is inserted and locked into the terminal accommodating chamber 19a of the connector portion 18a.

Moreover, the terminal receiving holes 19b, 1 of the connector parts 18b, 18c
A female terminal 22 having a conductor portion 22a is inserted and locked in 9c, and the conductor portion 22a is welded by spot welding etc. through a hard copper solid wire 20 disposed in the groove 17 and a through hole (not shown) provided in the insulating plate 16. A branch section is formed for connection with other auxiliary equipment.

Hard copper lane 11 for the above wiring board 10 or insulating board 16
Alternatively, although it is desirable to automate the wiring work of 20, it may be performed manually.

(Effects of the Invention) As explained in detail above, the present invention uses inflexible hard copper wire for the electric wires constituting the wire harness, and heats and anneales only the bent portions locally before wiring. , bent and formed into the required shape to match the wiring shape to the vehicle body,
This is a method of manufacturing a wire harness by wiring the wires to a wiring board or insulating board that has wiring grooves of the same shape, so it is extremely easy and simple to wire the wires to the wiring board, etc. In addition, bending of solid copper wire can be performed with low power and precision. Further, since the shape of the wire harness can be formed to match the vehicle body structure, the manufacturing process can be greatly simplified, automation can be easily performed, and the required space can be saved, among other remarkable effects.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of the device used in the present invention, FIG. 2 is a view of the pengu device shown in FIG. . 1... Hard copper single wire, 2... Bent part, 3... Supply I
J-) Be 4... Straightening roll, 5... Length measuring roll,
6... Feed roll, 7... Annealing machine, butt... Cutter, 9... Pengu device, 10... Wiring board, 11.2
0... Bent formed hard copper single wire, 13... Gripping tool,
14...Claw, 16...Insulating plate. Patent applicant Yazaki Sogyo Co., Ltd. Figure 2

Claims (1)

[Claims] A method for manufacturing a hard copper wire wire harness, characterized by locally heating and annealing at least one location of a plurality of solid copper wires before wiring, and bending the annealed region to form it into a predetermined shape. .