JP3058048B2 - Wire harness and method of manufacturing wire harness - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a wire harness in which a plurality of electric wire groups are bundled and bound with a binding material.

[0002]

2. Description of the Related Art For example, a wire harness routed in a vehicle must be formed in a predetermined bent shape in accordance with a complicated and narrow installation space of a vehicle body. The manufacturing procedure was conventionally as follows. First, as shown in FIG. 4, a large number of wiring holders 3 each having a U-shaped wire holding part 2 are attached to predetermined positions on the assembly drawing board 1, and the wiring holders 3 are used. The coated electric wire 4 is laid so as to follow a predetermined route. After the electric wires 4 are laid, necessary portions of the electric wire group are wound and bundled with vinyl tape. The bundle of electric wires bundled in this way has a poor shape retention ability only by winding a vinyl tape, and is particularly easily deformed when a force acting to bend the bent portion straight is applied.
Therefore, a high-rigidity protector (not shown) formed of a plastic into a predetermined shape is applied to a portion where the shape is required to be further secured with a tape.

[0003]

As described above, in the conventional wire harness, since the wire harness itself does not have sufficient rigidity, a molding protector must be added afterwards to maintain a predetermined bent shape. There is a disadvantage that it does not. If a molded protector is added, not only does the cost of the wire harness increase due to the cost of the parts, but there is a problem that the shape enlargement of the wire harness is unavoidable and contradicts the recent demand for smaller and lighter weight.

The present inventor has repeatedly conducted various studies in order to explore the possibility of eliminating such a molded protector. As a result, one reason why the rigidity of the conventional wire harness could not be sufficiently increased was as follows. I determined that it was.

[0005] When manufacturing this kind of wire harness, the number of covered wires 4 assembled as a wire harness is extremely large. Therefore, in practice, a small number of wires of the same series are bundled in another process in advance and a wire group ( In the following, a "temporary product" is manufactured as required, and this is inserted into the wire holding portion 2 of the wiring holder 3 to perform wiring work. In this case, for example, in a case where three temporary products A1, A2, and A3 are wired, first, the first temporary product A1
5A are laid along the corners of the wire holding portion 2 as shown in FIG. 5 (A), and then the second and third temporary products A2, A3
Are sequentially superimposed and wired as shown in FIGS. Then, as shown in FIG. 2C, between the two bent portions of the wire harness, the temporarily formed products A1, A2, A3 are twisted.

The occurrence of such torsion causes a reduction in rigidity of the wire harness. For example, even if a binding material such as vinyl tape is wound around the twisted portion and tightened, if a bending force acts in a direction to loosen the twist, the loosening of the twist causes a decrease in the binding force of the binding material, and as a result, This is because the shift movement between the electric wires is further allowed, and the overall loosening progresses at an accelerated rate, so that the wire harness is easily bent.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wire harness itself having a necessary rigidity and having a shape holding ability, thereby eliminating the need for a shape holding part such as a molded protector. It is to provide a manufacturing method.

[0008]

According to a first aspect of the present invention, there is provided a method of manufacturing a wire harness, wherein a plurality of wiring holders are erected on an assembly drawing board, and the wiring harness is provided. A method for manufacturing a wire harness by inserting a temporary product obtained by temporarily binding a plurality of electric wires into a holder and laying the wires while bending the wires, and then further bundling the plurality of temporary products and tightening them with a binding material. a is, the wiring holders are configured in parallel form having a plurality of wire holding passages side by side, one of said plurality of temporary binding products, each wire retaining passage of the wiring holders It is characterized in that the wires are arranged so as not to be twisted by being housed at substantially the same position in the side- by- side direction, and are wound with a binding material. Ma
The wire harness according to the invention of claim 2 is assembled
Erect a plurality of wiring holders on the drawing board, and
Insert the temporarily tied product of multiple wires temporarily tied into the holding tool
After bending and laying, the plurality of temporary products are further
Manufactured by bundling and tying it with binding material
An ear harness, wherein the plurality of temporary products are the wiring
Wire holding passages provided side by side in the holder
In contrast, one for each wire holding passage and side by side
In the same position in the same direction
That is laid out so that there is no
It has characteristics.

[0009]

According to the first and second aspects of the present invention , the respective temporary products are sequentially stored at substantially the same position in the horizontal direction in the respective wire holding passages of the wiring holder. Are arranged linearly without twisting. Therefore, even if a bending force acts on the wire harness in which the wire harness is wound with the binding material, the electric wire is less likely to be loosened, and the wire is kept tightly bound.

[0010]

According to the present invention, since each provisional product is laid without twisting and wound with a binding material, even if a bending force acts on the wire harness, it does not loosen and has high rigidity. And the effect of excellent shape retention ability can be obtained.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a method for manufacturing a wire harness for a vehicle will be described below with reference to FIGS. FIG. 1 shows a wired wiring harness H together with an assembly drawing board 10. A plurality of wiring holders 20 are erected on the assembly drawing board 10. These wiring holders 20 include a support 21 fixed to the assembly drawing board 10 and an electric wire holding portion 22 located at the upper end thereof. As shown in detail in FIG. Reference numeral 22 denotes a side-by-side configuration in which a plurality of (four in this embodiment) partition rods 23 are erected in a comb shape and three electric wire holding passages 24 are arranged side by side.

The wiring of the wiring harness H using the wiring holder 20 is performed as follows. First, a plurality of temporary products are prepared by temporarily binding a plurality of wires, for example, for each wire series or for each connector. This is carried into the work station of the wiring work, and is formed into a predetermined shape while hooking the temporarily formed product on the wiring holding fixtures 20 on the assembly drawing board 10. At this time, in the present embodiment, when inserting the temporarily formed product into each wire holding passage 24 of the wiring holding tool 20, it is housed at substantially the same position in the horizontal line direction in the group of wire holding paths 24 of each wiring holding tool 20. It will be while laying. That is, for example, three temporary products B1, B
As an example, when the wiring is performed while bending B2 at X and Y, first, the first temporarily formed product B1 is connected to the electric wire of each wiring holder 20 as shown in FIG. The wire is accommodated in the wire holding passage 24 on the right side of the holding portion 22 and wired along a predetermined route. Next, the second temporarily formed product B2 is accommodated in the wire holding passage 24 at the center of the wire holding portion 22 of each wiring holding tool 20 as shown in FIG. As shown in FIG. 3C, the third temporary product B3 is wired and the wire holding passage 24 on the left side of the wire holding portion 22 of each wiring holder 20 is provided.
And wired along a predetermined route. Each of the provisional products B1, B2, and B3 wired in this manner has two bent portions X and Y.
Lined up straight without twisting between.

Thereafter, a group of a large number of electric wires laid in a predetermined shape are partially bound near the wiring holder 20, and are removed from the wiring holder 20 while being bent, straight or branched. When a binding material such as a vinyl tape (not shown) is wound around a required portion where the shape is required to be maintained, the wire harness H is completed. The binding material is not limited to the above-described vinyl tape, and a binding band, a cloth tape, or the like can be selectively used as needed.

According to the wire harness H manufactured by the method of this embodiment, each of the temporarily formed products B1, B2 and B3 is connected to the wiring holder 20.
Are sequentially stored at substantially the same position in the side by side direction. For this reason, each temporary product B1, B2,
B3 is arranged in a straight line without twisting on the way. Therefore, even if a bending force is applied to the wire harness H in which the wire harness H is wound with the binding material, the wire does not loosen and the wire does not loosen, so that the wire is not easily loosened.
Maintains a firmly tied state and exhibits strong bending resistance. As a result, strong rigidity can be obtained as a whole of the wire harness H. Therefore, even if a plastic molding protector, which is conventionally required, is omitted, there is no shortage in bending resistance, and a small size and light weight can be achieved. In addition, the cost can be reduced.

<Other Embodiments> The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention.

(1) In the above embodiment, the wiring holder 20
The support 21 has a fixed pillar shape, but is not limited thereto. For example, the support 21 is configured to be bendable at a root portion,
When the wiring operation is completed, the wiring holder 20 may be fallen inside the bent portion so that the winding operation of the binding material can be easily performed.

(2) In the above embodiment, the wiring holder is made of steel wire. However, it may be manufactured by bending a steel plate, shaving metal or plastic, or casting using a mold. good.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a wiring operation of a wire harness according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the wiring holder.

FIG. 3 is an enlarged plan view showing a wiring process.

FIG. 4 is a perspective view showing a wiring operation of a conventional wire harness.

FIG. 5 is a schematic plan view showing a wiring process of a conventional manufacturing method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Assembly drawing board 20 ... Wiring holder 21 ... Prop part 22 ... Wire holding part 24 ... Wire holding passage 25 ... Bundling material

Claims (2)

(57) [Claims] 1. A plurality of wiring holders are erected on an assembly drawing board, and a plurality of temporary binding products obtained by temporarily binding a plurality of electric wires are sequentially inserted into the wiring holder and the cloth is bent. A method of manufacturing a wire harness by further bundling the plurality of temporary products after binding and winding the bundle with a bundling material, wherein the wiring holder has a plurality of wire holding passages side by side. The plurality of temporary products are accommodated one by one in each wire holding passage of the wiring holder and at substantially the same position in the side- by- side direction so that twisting does not occur.
A method of manufacturing a wire harness, comprising: laying a wire and winding it with a binding material. (2) Stand multiple wiring holders on the assembly drawing board
And temporarily binds multiple wires to the wiring holder.
After inserting the knots sequentially and bending while bending,
For further bundling multiple temporary products and tightening them with binding material
Therefore, a wire harness manufactured The plurality of temporary products are arranged side by side in the wiring holder.
Each of the multiple wire holding passages
One in each aisle and almost at the same position in the horizontal direction
The cables are wired so that they are not twisted by being
Wire harness characterized by being wound with a bundle
Nes.