JPH11252739A - Sheathing material for wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily remove a sheathing material from a wire harness. SOLUTION: A rectangular resin sheet 10 is provided for sheathing materials, a splitting wire rod 5 is embedded along the entire length in the axial direction of the sheet 10 at a part which is not glued to an adhesive-agent applied surface 100, protruding at least one end part 5a of the wire rod 5 from one side end surface 10d of the sheet 10, and the sheet 10 is glued together at its adhesive part 10c and fitted to a wire harness W/H. After that, the sheet 10 is torn into a longitudinally split state by pulling the end part 5a of the splitting wire rod 5 along the axial direction, when the sheet 10 is removed from the wire harness W/H in the dismantling of the car, etc. After the splitting, the breadth of split of the split part is widened, and the sheet 10 can be removed easily from the wire harness W/H and without using cutting tools such as a pair of scissors, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exterior member made of a resin sheet or tube for protecting an electric wire group or waterproofing by externally fitting the electric wire group of an automobile wire harness. The sheet or tube can be easily removed from the wire harness at the time of repair or replacement of the wire harness.

[0002]

2. Description of the Related Art Recently, it has been demanded that a scrapped car can be easily dismantled, and the necessity of separate disposal and recycling of dismantled parts and materials has been increasing.
In order to recycle the core material of the electric wire that constitutes the wire harness, it is necessary to easily remove the exterior material made of a resin sheet or tube from the wire harness.

As shown in FIGS. 6 (A) and 6 (B), the sheet 1 is made of short PVC having a required length, and has one side at one end in the longitudinal direction along the longitudinal direction. Adhesive is applied, and the sheet 1 is connected to the wire group 3 of the wire harness W / H.
The sheet 1 is attached to the wire group 3 of the wire harness W / H so as not to move so that the sheet 1 does not move. As shown in FIG. 6C, the tube 2 is made of a cylindrical PVC having a required length, and is fitted to the wire group 3 of the wire harness W / H so as to be fitted outside.
After that, the connector 7 is connected to the terminal of the terminal of the wire harness W / H. Also, connect the tube to the wire harness W
When attaching to / H, there is a case where at least one end of the tube is wrapped with a tape and fixed.

As shown in FIG. 7 (A), when the automobile is dismantled or when the wire harness W / H is repaired or replaced, as shown in FIG. 7 (A), the end of the adhesive coated surface 1a bonded by the adhesive portion 1c of the sheet 1 is used. The sheet 1 is removed from the wire harness W / H by peeling off the adhesive portion 1c by pulling the portion and the outer peripheral surface 1b in directions opposite to each other. FIG. 7 (B)
This is the case where the tube 2 is used as the exterior material.
The tube 2 is cut with scissors 4 along the axial direction from one end to the other end of the wire harness W /
H.

[0005]

As described above, since the sheet 1 is firmly adhered to the adhesive-applied surface 1a and the outer peripheral surface 1b, the sheet 1 is connected to the wire harness W / H.
When removing from the wire group 3, the worker needs considerable force to peel off the adhesive portion 1 c, and there is a problem that the working time is long. Also, when the tube 2 is used as the exterior material, Wire harness W with connector
Since it takes time and effort to pull out the tube 2 from the end of / H, it is necessary to use a cutting tool such as a cutter or a cutter when removing the tube 2.

Further, the applicant of the present invention has reported that Japanese Utility Model Application Laid-Open No.
In No. 23, as shown in FIGS. 8 (A) and 8 (B), the short sheet 6 has an adhesive portion 6a on one side of one side end thereof,
As the side end is along the longitudinal direction of the wire harness,
The sheet 6 is wound around a wire harness, the side end portions are bonded to opposing side end portions, and in the protective sheet 6 attached to the wire harness, cut-off portions 6b are provided at positions not opposing each other at the opposing side end portions. Although the provided sheet 6 is provided, in the removing operation, the operator uses the cut-out portion 6b to make it easy for the operator to grip both side ends, but the operator peels off the bonded portion. As before, the labor is still increasing.

[0007] The present invention has been made in view of the above problems, and aims to reduce the labor of the operator and to remove the exterior material from the wire harness W / H without the need for cutting tools such as scissors. Is an issue.

[0008]

In order to solve the above-mentioned problems, the present invention comprises a resin sheet or tube which is externally fitted to a wire group of a wire harness for an automobile to protect the wire group. A sheathing material, in which a tear wire is buried along the entire length in the axial direction of the sheet or the axial direction of the tube wound around the wire group and fixed with an adhesive, and at least one end in the length direction of the tear wire is attached. A wire harness exterior material is provided in which the projecting end is pulled to tear the sheet or tube in the axial direction when the sheet or tube is removed from the electric wire group.

As described above, if a wire for tearing is attached to the sheet or tube in advance, unlike the prior art, no labor is required for the operator and no cutting tool such as scissors is used. By simply pulling the end of the tear wire protruding from the sheet or tube, the sheet or tube can be torn in a longitudinally split state in the axial direction. In other words, the sheet or tube can be removed from the wire harness with one touch.

The tear wire is preferably made of a sharp wire like a piano wire or a tough resin thread like a fishing line, and is preferably molded into the sheet or tube and the protruding end is rounded. (Claim 2). That is, the tearing wire used has a shape that is sharp enough to tear the sheet or tube, and has toughness that does not break when tearing. Also, if the end of the tear wire protruding from the sheet or tube is rounded, the wire harness W /
At the time of mounting work on the H, damage to the operator is prevented, and damage to peripheral parts is also prevented. Furthermore, the gripping of the tear wire end is facilitated during the sheet or tube removing operation.

The tear wire is attached to the wire harness in a state where it is attached to two opposing positions and molded. When the number of tearing wires is two, the sheet or tube is split into two parts simply by pulling the two tearing wires along the axial direction at the same time, easily falling off the wire harness, and the removing operation can be further simplified.

[0012]

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

FIG. 1 shows a first embodiment of the present invention. A sheet 10 for an exterior material has a short shape made of a resin, and has an adhesive-coated surface 10a on one side at one end in a longitudinal direction. The tear wire 5 is embedded along the entire length of the sheet 10 in the axial direction in the sheet 10 other than the portion that is adhered to the adhesive applied surface 10a. At this time, at least one end of the tear wire 5 is projected from one end face 10d of the sheet 10 so that an operator can grip an end of the tear wire 5 at the time of tearing the sheet 10.

The tear wire 5 is made of a sharp wire like a piano wire or a tough resin thread like a fishing line, and is molded on the sheet 10. The outer diameter of the tear wire 5 is set to be slightly smaller than the thickness of the sheet 10 so that when the sheet 10 is torn by the tear wire 5, the sheet 10 is cut. The end 5a of the tear wire 5 protruding from the end face of the sheet 10 is rounded in an arc shape. Note that the end 5a does not necessarily need to be rounded in an arc shape, but in consideration of safety for an operator, prevention of damage to components around the end 5a, and ease of gripping the end 5 by the operator. It is preferable to make the shape rounded in an arc shape.

The exterior material sheet 10 is connected to a wire harness W /
In order to attach to the wire group 3 of H, the longitudinal direction of the sheet 10 is adjusted in the axial direction with the adhesive-coated surface 10a of the sheet 10 facing the wire harness W / H wire group 3 side. Sheet 1 facing the side end on the application surface 10a side
0 around the wire group 3 of the wire harness W / H from the side end, and the outer peripheral surface 10b of the sheet 10 and the adhesive applied surface 10a
Is firmly attached. At this time, the seat 10 is attached to the electric wire group 3 of the wire harness W / H so as not to move in the axial direction.

In order to recycle copper, which is the core material of the electric wires constituting the wire harness W / H, at the time of disassembly after the dismantling of the automobile or at the time of repair / replacement of the wire harness W / H, the sheet 10 is used. It must be removed from W / H. In this removing operation, the operator grips the end 5a of the tear wire 5 that is rounded in an arc shape with one hand, and grips the vicinity of the other side surface 10e of the sheet 10 with the other hand, and FIG. As shown in B), by pulling the gripping portion of the tear wire 5 from the one end face 10d side of the sheet 10 to the other side face 10e along the axial direction,
The sheet 10 is torn in a vertically split state.

After the sheet 10 is torn, the tear portion 1
The tear width of 0f is wider than the outer diameter of the wire group of the wire harness W / H, and the sheet 10 is moved in the detaching direction while maintaining the state, and the sheet 10 is moved to the wire harness W / H.
Remove from

FIG. 3 shows a second embodiment, in which a tube 20 is used as an exterior material. The tube 20 is made of a cylindrical resin having a required length, in which the tear wire 5 is arranged as in the first embodiment, and a wire harness W / H.
To the wire group 3 of FIG. Tube 20
After the installation, the connector 7 is connected to the terminal of the terminal of the wire harness W / H. The tearing operation is the same as in the first embodiment.

As a modified example of the second embodiment, when the tube is externally fitted to the wire group of the wire harness W / H and attached, at least one end of the tube is wound around with a tape together with the wire group of the wire harness W / H and fixed. May be. At this time, the end of the tearing wire is made to protrude from the tube toward the side fixed with the tape, and at the same time, the end of the tearing wire is made to protrude from the tape winding part when winding the tape. Others are the same as the second embodiment. As described above, by protruding the end of the tearing wire from the tape winding portion, a single tearing operation tears the sheet in a vertically split state and simultaneously tears the tape.

FIG. 4 shows a third embodiment in which two tearing wires 5 are applied to the same sheet 10 ′ as in the first embodiment along the entire length of the sheet 10 in the axial direction.
In such a manner that the sheet 10 'is located at a position other than the position where the sheet 10' is adhered to the adhesive-applied surface 10'a of the sheet 10 ', and the tear wire 5 Are arranged so that at least one of the ends protrudes from the sheet 10 ′ in the same direction.
The end treatment of the tear wire 5 and the attachment of the sheet 10 ′ to the wire harness W / H electric wire group 3 are the same as in the first embodiment.

In the tearing operation, as shown in FIGS. 5A and 5B, the ends of the two tearing wires 5 are gripped, and the one side end face 10'd of the sheet 10 'is moved along the axial direction. To the other end face 10'e side, and pull the sheet 1
Tearing 0 'in a vertically split state. The reason why the two tear wires 5 are arranged is that the sheet 10 ′ is split into two parts after the sheet 10 ′ is torn and then falls naturally from the wire harness W / H. Therefore, after tearing the sheet 10 'as in the first embodiment, the work of removing the sheet 10' from the wire harness W / H after expanding the tear width becomes unnecessary, and the exterior is further improved compared to the first embodiment. The material tearing operation is simplified.

Further, a tube is used as the fourth embodiment, and two tearing wires are arranged in the same manner as in the third embodiment so as to be opposed to each other along the entire length of the tube in the axial direction. There is something. The operation of attaching the tube to the wire harness W / H is the same as in the second embodiment. The tearing operation is the same as in the third embodiment. The reason why the two tearing wires are arranged in the tube is that after the tearing operation, the tube is split into two pieces in a vertically cracked state so that the tube naturally falls out of the wire harness W / H.

[0023]

As is apparent from the above description, when a sheet is used as an exterior material in the work of removing the exterior material from the wire harness W / H at the time of dismantling an automobile or replacing a wire harness. However, when using a tube as the exterior material, it was necessary to use a cutting tool such as scissors, forcing the worker to peel off the adhesive portion, but in the present invention, only pulling the tear wire, the exterior Since the material is torn vertically in the axial direction, the labor of the operator can be reduced, and the use of cutting tools such as scissors is not required, and the work time can be reduced.

Also, since the tearing wire is sharp enough to tear the sheet or tube,
When the end of the tearing wire is rounded in an arc shape without damaging the sheet or tube except during the tearing operation, damage to peripheral parts at the end can be prevented, and safety for workers And it is easy to grip the end of the tearing wire during work.

When two tearing wires are arranged on a sheet or a tube so as to be opposed to each other along the entire length in the axial direction, after the tearing operation, the exterior material is divided into two parts and the wire harness W / H is naturally separated from the wire harness W / H. Since it falls off, the operation is further simplified as compared with the case where only one tearing wire is used.

[Brief description of the drawings]

FIG. 1 is a perspective view when an exterior material according to a first embodiment of the present invention is attached to a wire harness.

FIG. 2 is an exterior material according to the first embodiment of the present invention,
(A) is a perspective view showing a tearing state, and (B) is a perspective view showing a state after tearing.

FIG. 3 is a perspective view when an exterior material according to a second embodiment of the present invention is attached to a wire harness.

FIG. 4 is a perspective view when an exterior material according to a third embodiment of the present invention is attached to a wire harness.

FIG. 5 is an exterior material according to a third embodiment of the present invention,
(A) is a perspective view showing a tearing state, and (B) is a perspective view showing a state after tearing.

6 (A) is a perspective view when a sheet is used as an exterior material and is wound around a wire harness, and FIG. 6 (B) is a perspective view when a sheet is attached to the wire harness. FIG. (C) is a perspective view when a tube is used as an exterior material and attached to a wire harness.

FIG. 7 shows a tearing state of a conventional exterior material, and (A)
1 is a perspective view using a sheet as an exterior material, and (B) is a perspective view using a tube as an exterior material.

8A is a perspective view of another conventional example, and FIG. 8B is a perspective view of the seat when the sheet is attached to a wire harness.

[Explanation of symbols]

1, 10, 10 'sheet 1a, 10a, 10'a Adhesive coated surface 1b, 10b Outer surface 1c, 10c Adhesive part 1d, 1e, 10d, 10e, 10'd, 10'e
Side end face 1f Torn portion 2, 20 tube 3 Electric wire group 4 Scissors 5 Torn wire 5a Torn wire end 6 Sheet 6a Adhesive portion 6b Cut portion 7 Connector

Claims (3)

[Claims] An exterior material comprising a resin sheet or a tube which is externally fitted to a wire group of a wire harness for an automobile to protect the wire group, wherein the sheet is wound around the wire group and fixed with an adhesive. Along the entire length of the tube in the axial direction or the tube,
A tear wire is embedded, and at least one end in the length direction of the tear wire is protruded, and when the sheet or tube is removed from the wire group, the protruded end is pulled to tear the sheet or tube in the axial direction. Wire harness exterior material. 2. The tear wire is made of a sharp wire like a piano wire or a tough resin thread like a fishing line, and is molded into the sheet or tube, and the protruding one end is rounded. 2. The exterior material for a wire harness according to 1. 3. The exterior material for a wire harness according to claim 1, wherein two tear wires are attached to the wire harness at opposed positions in an attached state.