JPS5832439Y2 - Wiring structure in automobiles, etc. - Google Patents

Description

[Detailed description of the invention] This invention relates to improving the wiring structure of various electrical components installed in automobiles, etc., and uses lightweight aluminum electric wires.
The purpose is to provide a wiring structure that can be firmly and stably attached to vehicle bodies, etc., without causing core wire breakage, etc., with high production efficiency, good electrical performance, and high vibration resistance. There is.

Noting that aluminum wires are significantly lighter than copper wires, attempts were made to use aluminum wires for wiring in automobiles and other vehicles to reduce vehicle weight. Under work conditions where assembly is fast,
Aluminum wire has disadvantages such as poor vibration resistance and flexibility, difficulty in soldering, and easy oxidation, making it difficult to use.

Also, in order to improve vibration resistance, it is possible to use twisted core wires as the core wires, but in order to avoid difficulty in soldering to terminals, etc., when caulking is performed, gaps between multiple wires are created. Oxidation progresses due to contact with the generated air, resulting in a disadvantage of deterioration of electrical performance.

The present invention allows aluminum electric wires to be used in automobiles, etc., without the above-mentioned drawbacks, by adopting the configuration described in the claims of the utility model registration.

The configuration of the present invention will be described below with reference to illustrated examples.

FIG. 1 shows an embodiment in which a wiring structure 2 according to the present invention is applied to a part of a cowl side panel 1, in which a plurality of single-core aluminum electric wires 4, 5, . are fitted into the connectors 1, 10 of the junction block 8 fixed to the cowl side panel 1 by the terminals 6, 7, . . .

As shown in FIG. 2, the wire 3 is a single-core aluminum wire
A plurality of 5... are assembled and integrated so as to form a circular cross-sectional shape by twisting, etc.

Reference numerals 11, 12, 13, . . . in the figure indicate insulating coatings.

Terminals 6, which are plugs, are crimped to the ends of the individual single-core aluminum electric wires 4, 5, . . ., as shown in FIG.

In the illustrated example, the aluminum core wire 14 and the insulation coating 11 are
The terminal 6 is clamped and sealed by the clamp part 15, and the tip 17M16 of the core wire 14 is covered by the caulking part 17 so as to come into close contact with the terminal 6 and not be exposed to the outside.

Referring again to FIG. 1, the cable 3 is connected to the locker inner panel 1.
After being wired in a straight line along the stepped portion 19 of the junction block 8, the wire is bent at a right angle at a bent portion 20 facing toward the junction block 8.

In the present invention, a hard protector 21 is attached to the wire 3 at the bent portion 20, and this protector 2
1, the wire 3 is fixed to the rocker inner panel 18.

The protector 21 shown in FIG. 1 is molded from a synthetic resin such as polyamide, polyester, or hard polyethylene. U-shaped wire storage groove 2
2.23 are continuous in an L-shape, and each groove has an ear piece 24, 2 at the tip.
5 extend parallel to each groove.

Also, on the back of the protector 21, there is a downward hook 26.
The hook 26 is inserted into the edge 27 of the rocker inner panel 18, etc., and fixes the protector 21.

In FIG. 1, the hook 26 is schematically shown on an enlarged scale.

A tongue piece 28 is formed on a part of the casing and protector 21, and a locking claw 29 is provided protruding from the back side of the casing.

This locking pawl 29 is fitted into a small hole drilled in the rocker inner panel 18, etc., which the tongue piece 28 comes into contact with, and
1 is fixed.

The length of the wire 3 is set in advance on the factory production line from the connectors 9 and 10 of the junction block 8 to the other end of the wiring route (not shown), and furthermore, the wire 3 conforms to the bend at a position corresponding to a bend in the wiring route. The protector 21 is bent in advance into a shape, that is, bent at a substantially right angle at the bent portion 20 described above, and is fitted with a protector 21 that is also shaped to match the shape of the bent portion 20. Wrapping of synthetic resin tape, etc. 30 using
, 31.

Of course, protectors pre-shaped to match the bent shapes are also fixed at other bent parts in the wiring path.

Therefore, on an automobile assembly line, it is sufficient to arrange the electrical wire 3 along the wiring route, fix it to the wiring part of the vehicle body etc. using the protector 21, etc., and then connect it with the connector. This eliminates the need for bending at the same time.

In addition, when the electrical wire 3 is preformed and the terminals etc. are fixed as described above, there is no need for soldering or other operations at all, and the bent shape is maintained by the protector 21, etc., so that the production work is easy. can be accomplished extremely quickly.

The means for fixing the p1 protector and the electrical wire, the means for fixing the protector and the wiring portion, etc. are not limited to the illustrated structure.

The present invention has the above-mentioned structure and operation, and since the wire is bent and formed in advance to match the wiring route, the occurrence of core wire breakage etc. due to sudden bends and bends during wiring. There is no such problem, and the assembly into automobiles and the like can be carried out with high efficiency.

In addition, at the bent part, the bent shape is maintained through the protector, and by fixing the protector to the wiring part, the wire is also fixed in the wiring route, so that the cable is not easily damaged by vibrations of the wire due to vibrations of the car body, etc. It also has the effect of maintaining a strong and stable wiring structure without breaking the core aluminum wire.

Furthermore, since the terminals are fixed to each end of the single-core aluminum wire by crimping or caulking, it is possible to avoid the inefficient work of soldering. Deterioration of electrical properties due to oxidation or the like can also be prevented.

However, since the above-mentioned effects can be achieved, aluminum electric wires can be fully utilized without reducing production efficiency or breaking under harsh usage conditions, so they are significantly more efficient than copper electric wires. Its lightweight characteristics make it extremely effective in reducing vehicle weight.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view showing the wiring structure of one example of implementation, Fig. 2 is an enlarged perspective view of the end of the wire, and Figure 3 A is an enlarged perspective view of the end of the single-core aluminum electric wire, which is the terminal attachment part. FIG. 4 is a front view of one example of the protector, FIGS. 5 and 5 are a plan view thereof, FIG. 6 is a side view thereof, and FIG. 7 is a sectional view taken along the line ■--■ in FIG. 2... Wiring structure, 3... Electric wire, 4, 5... Single core aluminum electric wire, 6, 7... Terminal, 20... Bent part, 21
...Protector, 26...Fixing tool hook, 2
9...Latching claw serving as a fixing device.

Claims (1)

[Scope of utility model registration request] The wire, which is made up of a plurality of single-core aluminum wires with terminals accommodated in the connector crimped and caulked at the ends, is aligned with the shape of the bend at a position corresponding to the bend over the wiring route. 1. A wiring structure for use in automobiles, etc., characterized in that the wiring structure is bent in advance and covered with a hard protector that is molded in a molded manner, and that a fixing device for the wiring portion is attached to the protector.