JPS62285316A - 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 2. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a wire bar as a wire assembly disposed between electrical components in an automobile.

[Prior Art] Conventionally, wire harnesses are made by wrapping multiple electric wires with terminals crimped onto the terminals in advance by winding tape, etc., but this wire harness can be used in narrow spaces inside a car, such as inside a door or on the floor. Placing it through the surface has many obstacles, such as restricting the freedom of passage and detracting from the aesthetics.

Therefore, recently, electric wires in which a plurality of electric wires are arranged in parallel and bundled in a flat shape have been developed. FIG. 4 shows an example of such a flat converging wire (Japanese Patent Application Laid-open No. 11219-1983).
No. 4) is constructed by arranging a plurality of electric wires on an elongated strip a made of thermoplastic material and fusing the insulating sheath of the electric wires with the strip a over a portion or the entire length thereof.

[Problems to be Solved by the Invention] In the above-mentioned prior art, a plurality of electric wires are connected in parallel on a straight long strip to form a flat shape. In this case, the manufacturing process is troublesome because a long strip a must be arranged and the electric wires must be aligned during manufacturing, and there are disadvantages such as a lack of protection for each electric wire in the product.

The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to provide a wire harness which is easy to manufacture and which is bundled into a flat shape, and which protects electric wires during use. It is something to do.

[Means for solving problems]

In order to achieve the above object, the present invention adopts a structure in which a plurality of electric wires having a synthetic resin insulation coating are arranged in parallel and bundled into a flat shape by a foamed synthetic resin layer made of the same material as the insulation coating. did.

〔Example〕

FIG. 1 shows a wire harness W according to the present invention.
A plurality of small insulated wires 1 and 2 are arranged in parallel, and mutual insulation coating 1
a, 2a are welded using high frequency or the like and then focused into a flat shape by the foamed synthetic resin layer 3. Wire harness W
is the flat branch line part Wl, W2 with respect to the flat main line part W'.
In the example, it has a non-flat convergent portion W'' converged by a tape 4, and is provided with a connector 5 at each end.

The insulation coatings of the large and small electric wires 1 and 2 are each made of vinyl chloride, and the foamed synthetic resin layer 3 is also made of vinyl chloride and fused together.

The wire harness W has flat bent portions 6, 7.8, and the flat bent portions 6, 7.8 are held in a constant bent shape by the foamed synthetic resin layer 3.

In the above embodiment, the foamed synthetic resin layer 3 is provided only on one side of the wire harness W, but it may be provided on both sides in order to increase the strength.

Another example is to first coat parallel insulated wires with a vinyl chloride paste made of the same material as the insulated wires, and then form a foamed synthetic resin layer of vinyl chloride on top of the paste to form a flat shape. focus on.

FIG. 3 shows the manufacturing process of such a flat wire harness, in which a wire installation jig G having a wide wire receiving groove g as shown in FIG. 3(A) is used.

A plurality of large and small electric wires 1.2 are arranged in a flat shape in the groove (g), and after the insulation coating has been welded by high frequency etc. in advance, the electric wires arranged in a flat shape are A molten vinyl chloride paste, which is the same material as the insulation coating of the electric wires 1 and 2, is applied in a flat shape using a wide-mouthed nozzle (not shown), cooled and fixed, and then taken out as a flat wire harness.

〔Effect of the invention〕

As described above, the present invention is made by arranging a plurality of electric wires having a synthetic resin insulating coating in parallel and converging them into a flat shape with a foamed synthetic resin layer made of the same material as the insulating coating, and therefore can be easily manufactured. At the same time, the foamed synthetic resin layer protects the electric wires and provides soundproofing and noise prevention effects.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the n-IF line of the same as above, and FIGS. FIG. 4 is an explanatory diagram of a conventional example. 1.2... Electric wire, la, 2a... Synthetic resin insulation coating, 3... Foamed synthetic resin layer.

Claims (1)

[Claims] 1. A wire harness comprising a plurality of electric wires each having an insulating coating made of synthetic resin, which are arranged in parallel and bundled into a flat shape by a foamed synthetic resin layer made of the same material as the insulating coating.