JPH11260151A - Wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily detach adhesive tape from a wire harness. SOLUTION: In this wire harness for vehicle wires 1 are set along axial lines of the wire harness, and a group 3 of wires of the wire harness is wound with adhesive tape 2 for bundling-up, protection and water-proofing. Here, both ends 1a of the rip wires 1 are set to run out of the tips of the adhesive tape 2. In recycling work of the wire harness after scrapping the vehicle, the ends 1a of the rip wires 1 are pulled along the axial lines, thereby the adhesive tape 2 is ripped and detached, thus the subsequent process separating metal from resin is smoothly carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness for wiring for an automobile, and more particularly, to an adhesive tape wound around an outer peripheral surface of a group of electric wires constituting the wire harness.
When the automobile is dismantled, it is removed from the wire harness so that the core material of the electric wire can be easily recycled.

[0002]

2. Description of the Related Art Recently, the need for separate disposal or recycling of parts and materials disassembled from automobiles due to scrapping and repairs has been increasing, and the cost required for them has been required to be reduced. In the work of recycling the core material of the electric wire constituting the wire harness, the process of separating metal and resin is a bottleneck. This is because it takes time and trouble to remove the adhesive tape wound for the purpose of protecting the bundle of electric wires or waterproofing the wire harness from the wire harness, and therefore, it is performed without removing the adhesive tape.

As shown in FIG. 4, a wire harness W / H
Adhesive tape 2 is tightly spirally wound around the outer peripheral surface of electric wire group 3 to bundle electric wire group 3. Since the adhesive tape 2 is wound around the connecting portion between the trunk line and the branch line, it is difficult to confirm the tape end, and the operation of peeling the adhesive tape 2 requires time. Therefore, in the current wire harness recycling work, the adhesive tape 2 is sent to the next step in a state of being wound around the wire harness W / H.

In the process of separating the metal part and the resin part of the electric wire in the recycling work, as shown in FIG. 5, the wire harness W / H is cut at intervals of about 10 cm in a direction perpendicular to the axial direction in the pretreatment as shown in FIG. Then, each cut piece is 1-2 mm
After the metal 4 used for the core material of the electric wire and the resin 5 used for the electric wire coating are crushed to a degree, the metal 4 and the resin 5 are separated by a sorting machine 6. ing.

[0005]

In the process of separating the metal and the resin in the work of recycling the core material of the wire harness, since the wire harness is cut with the adhesive tape wound thereon, it is pulverized to about 1 to 2 mm. Even so, there is a problem that the adhesive strength of the adhesive tape remains on the crushed pieces. This makes it difficult for the metal and the resin to fall apart, and it is difficult to separate the metal and the resin even by using a separator, and the separation process requires time and effort.

[0006] The present invention has been made in view of the above problems, and in the recycling work of the core material of the wire harness,
Aiming to easily separate metal and resin, and not to leave the adhesive strength of the adhesive tape on the wire harness,
The task is to remove the adhesive tape from the wire harness without trouble.

[0007]

In order to solve the above-mentioned problems, the present invention converges a group of a large number of electric wires each having a required component such as a connector connected to a tip thereof, and attaches an adhesive tape to an outer peripheral surface thereof. In a wire harness wound and protected in a spiral shape, a tear wire is arranged along the entire length of the wire harness together with the wire group, and the adhesive tape is wound around the tear wire and the outer peripheral surface of the wire group, and When the tip of the tearing wire is made to protrude from the tip of the adhesive tape, take out the adhesive tape and disassemble the wire group,
A wire harness is provided which has a tip of the tear wire protruding from the adhesive tape and allows the adhesive tape to be torn and removed.

The cross-sectional shape and dimensions of the tear wire perpendicular to the axial direction are usually set so as not to damage the wire harness and to easily tear the adhesive tape when the adhesive tape is torn. Sometimes, I try not to cut it in the middle.

As described above, if the tearing wire is arranged along the entire length of the wire harness and spirally wound with an adhesive tape together with the wire group and attached, the end portion of the tearing wire is recycled at the time of recycling the core material of the wire. By simply gripping and pulling along the entire length in the axial direction, the adhesive tape can be removed by tearing, so that the adhesive force of the adhesive tape does not remain in the wire harness. Therefore, after removing the adhesive tape as described above and performing normal separation work, 1-2
When crushed to a diameter of mm, the metal and the resin are likely to fall apart, and the subsequent separation process by the separator is facilitated, and the time for the separation process can be reduced.

It is preferable that the tearing wire is made of a sharp wire like a piano wire and has a rounded tip protruding outward from the adhesive tape. That is, by rounding the tip of the tearing wire into an arc shape, it is possible to prevent damage to the operator and parts around the tip, and to allow the worker to easily grip the end of the tearing wire during the adhesive tape tearing operation. Become.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of the present invention, in which a tear wire 1 is made of a piano wire, and the total length of the tear wire is cut to a required size corresponding to the entire length of a wire harness W / H to be used. I do. The outer diameter is set to a size that does not damage the wire harness W / H and that easily tears when the adhesive tape 2 is torn, and does not tear off in the middle. Specifically, the diameter is preferably 0.5 to 2 mm, and in this embodiment, it is 1 mm. Further, both ends 1a of the tearing wire are rounded in an arc shape so that the tip does not protrude outward. Although both ends 1a do not necessarily have to be rounded in an arc, this prevents damage to the operator and parts around the tearing end and facilitates gripping of the tearing wire by the operator. The arc-shaped outer diameter is φ10-20m
m is suitable.

The tear wire 1 is connected to a wire harness W /
In order to attach the wire harness W / H to the wire harness W / H in the manufacturing process of the wire harness W / H,
The tearing wire 1 is arranged along the entire length of the adhesive tape, and the adhesive tape 2 is wound tightly and spirally together with the wire group 3.
At this time, both ends 1a of the tearing wire 1 are
Are arranged so as to protrude from the tip of the tear wire 1 so that an operator can grip the tear wire 1.

At the time of car disassembly, when recycling the metal which is the material of the core material of the wires constituting the wire harness W / H, the adhesive tape 2 is attached to the wire harness W / H in order to facilitate the step of separating the metal and the resin. / H. As shown in FIG. 2, this removal operation is performed by gripping one end 1 a of the tearing wire 1 and pulling the entire length of the winding portion of the adhesive tape 2 in the direction of the other end 1 a along the axial direction. Tearing 2 afterwards,
The adhesive tape 2 is removed from the wire harness W / H by peeling the adhesive tape 2 from the tearing portion 2a. After this, it is the same as the conventional recycling process.

As a second embodiment of the present invention, the tear wire is made of resin. Resin is used in places where short-circuiting due to tearing wire is likely to occur because resin is non-conductive.
Alternatively, it can be used for a wire harness W / H that is routed in a location susceptible to noise. Fig. 3 shows the cross-sectional shape of the resin yarn orthogonal to the axial direction.
As shown in (B), the side in contact with the wire harness W / H has a gentle curve, and the side in contact with the adhesive tape 2 has a shape having a bending point 1'c. Is not damaged, and the adhesive tape 2 is easily torn during the tearing operation. The outer diameter of the cross section is preferably about 1 to 2.5 mm so as not to be broken during the tearing operation, and is set to 1.5 mm in the present embodiment. Others are the same as the first embodiment.

[0016]

As is clear from the above description, in the process of manufacturing a wire harness for an automobile, if the tearing wire is attached together with the wire group of the wire harness with an adhesive tape for binding protection, the recycling of the wire group can be achieved. At times, the adhesive tape can be torn and easily removed simply by grasping one end of the tear wire and pulling it along the entire length in the axial direction. Therefore, since the adhesive force of the adhesive tape does not remain in the wire harness, the metal and the resin are easily separated in the pulverizing step of the electric wire in the recycling process, and the process time for separating the metal and the resin by the separation machine can be reduced. As a result, the cost of the recycling operation can be reduced.

Since the tearing wire is made of wire and both ends are rounded in an arc shape, damage to an operator and parts around the tip is prevented, and the worker can easily grip the tearing wire. The performance is improved.

In the case where the tearing wire is made of resin, the shape of the tearing wire is improved so that the tearing operation of the adhesive tape is further facilitated and the wire harness is not damaged. The quality is further improved. Further, since resin is a non-conductor, it can be used for a wire harness routed in a place where a short circuit may occur due to a tear wire or a place where the resin is easily affected by noise.

[Brief description of the drawings]

FIG. 1 is a perspective view of a wire harness according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a tearing state of the adhesive tape wound around the wire harness according to the first embodiment of the present invention.

FIG. 3A is a plan view and FIG. 3B is a cross-sectional view of the tear wire according to the second embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional wire harness.

FIG. 5 is a diagram showing a conventional wire harness recycling process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'Tearing wire 1a End 1'c Bending point 2 Adhesive tape 2a Tearing part 3 Wire group 4 Metal 5 Resin 6 Sorting machine

Continued on the front page (72) Inventor Haruhiro Muto 1-114 Nishisuehirocho, Yokkaichi-shi, Mie Sumitomo Wiring Systems, Ltd.

Claims (2)

[Claims] 1. A wire harness comprising: a bundle of a large number of electric wires each having a required component such as a connector connected at a tip thereof; and a spirally wrapping adhesive tape on an outer peripheral surface thereof to protect the bundle. Is arranged along the entire length of the wire harness, the adhesive tape is wound around the tear wire and the outer peripheral surface of the electric wire group, and the tip of the tear wire is projected from the tip of the adhesive tape, and the adhesive tape is taken out. A wire harness that enables the adhesive tape to be removed by holding the tip of the tear wire protruding from the adhesive tape when disassembling the wire group. 2. The wire harness according to claim 1, wherein the tear wire is made of a sharp wire like a piano wire, and has a rounded tip protruding outward from the adhesive tape.