JPH11178152A - Protector for branch in wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to manufacture protectors for branches in wire harnesses at low cost through simple constitution, and easily install the protector regardless of route of the wire harness for wiring cables along the body of an automobile. SOLUTION: A protector 1 for branches in wire harnesses W/H is composed of a plate-like body 2 brought into contact with the outer face of the group of the electric wires at a branch in a wire harness, and a leg 3 extending almost perpendicularly from the face of the plate-like body 2 in contact with the group of the electric wires. A plurality of barbs 4 are formed on the leg 3. Tape wrapping tongues 6a, 6b are formed at both the ends of the plate-like body 2 and the tongues are taped onto the wire harness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire harness branch protector, and more particularly, to a wire harness branch which is routed along the body of an automobile to prevent the branch of the wire harness from being damaged by contact with the body or other external interference materials. It relates to protective equipment to prevent.

[0002]

2. Description of the Related Art Generally, a corrugated tube or the like is provided on a wire harness to prevent the wire harness routed along the vehicle body from being damaged by contact with the vehicle body or other external interference materials due to vibrations during driving. Protective material is protected by the exterior. However, since the branch portion of the wire harness is located at the break of the protective material and cannot be protected as it is, separately from the protective material, a T-shaped joint protector (actually open 83-105) is provided to protect the wire harness branch portion.
No. 415) or a protective sheet made of synthetic resin or a sheet for bundling (see Japanese Patent Application Laid-Open No. H8-16374).
2) is proposed.

[0003] As shown in FIG. 9, the T-shaped joint protector is connected to a main line 10 a of a wire harness W / H through a branch line 1.
0b is applied to a position branched into a T-shape, and is formed of two members obtained by dividing a T-shaped tubular body into two, and each end of the T-shaped joint protector 20 is provided with a corrugated tube CT1, CT2 provided with a trunk line and a branch line. , CT3
This is to protect the entire wiring harness branch portion.

As shown in FIG. 10, the latter protective sheet or branching unit binding sheet has a rectangular sheet 30 made of a synthetic resin sheet such as vinyl chloride or a radially extending attachment part on each side of a triangular sheet base. The covered sheet covers the trunk line 10a and the branch line 10b of the wire harness branch portion, is fixed with an adhesive layer of the sheet, and is wound thereon with an adhesive tape 40.

[0005]

However, in the case of the joint protector, since the entire branch portion is protected, it takes time and trouble to attach the wire protector to the wire harness. Is restricted by the shape of the protector, which limits the route of the wire harness when mounting it on a car, requires the use of various types of joint protectors, and also protects parts that do not require protection. Therefore, there is a problem inevitably that a reduction in workability and an increase in cost are inevitable.

On the other hand, in the case of the latter synthetic resin sheet, an adhesive applied to the entire surface of the sheet must be adhered to the branch portion of the wire harness, and an adhesive tape must be wound therefrom. Because of the protection, there is a problem that a reduction in workability and an increase in cost cannot be avoided.

Therefore, according to the present invention, the wire harness branch protector can be manufactured at a low cost with a simple structure, and can be easily and easily attached regardless of the route of the wire harness routed along the vehicle body of the automobile. It is an object to do so.

[0008]

According to the present invention, in order to solve the above-mentioned problems, according to the first aspect, a plate-shaped main body to be brought into contact with an outer surface of a wire group of a wiring harness branch portion, and a substantially vertical direction from the plate-shaped main body. And a leg portion which is inserted into the wire group of the branch portion and is provided with a plurality of burrs, which are locked to the wire group by these burrs. Provides protective equipment.

[0009] The plate-shaped main body is formed into a rectangular plate shape, a disk shape, a T-shaped shape or a curved shape in an arc shape, and a wire group is formed on the outer surface of the trunk line of the branch portion of the wire harness so as not to interfere with an external interference material. It has a shape to cover.

[0010] The plate-shaped main body is formed integrally with the legs by using polyvinyl chloride or another elastic plastic material. The plate-shaped main body may be mounted on the surface where the electric wire at the branch portion of the wire harness comes into contact with the external interference material including the vehicle body. However, when the plate-shaped main body is mounted on the back portion of the wire harness main line (the position opposite to the branch line). If the plate-shaped main body has a rectangular plate shape, its length, that is, the dimension in the direction parallel to the length direction of the trunk line of the wire harness branching portion is larger than the side orthogonal to the side, and the dimension (width) of the side. Is desirably larger than the outer diameter of the end of the corrugated tube sheathed on the main line. When the plate-shaped main body is a disk-shaped body, it is desirable that the diameter is slightly larger than the diameter of the trunk of the wire harness branch portion or the diameter of the end of the corrugated tube that is sheathed on the trunk.
When the plate-shaped main body is formed in a T shape, the plate-shaped main body is brought into contact with the trunk line from the trunk line.

Further, a tape-wrapped tongue piece may be protruded from the plate-shaped main body. For example, in the case of a rectangular shape, a tongue piece protrudes from both ends in the length direction, and is fixed to a main line of a wire harness by tape winding. When the plate-shaped main body is formed in a T-shape, a tape-wrapped tongue is protruded from the tip of each piece, and the tape-wrapped tongue is fixed to the main line and the branch line. A protector having a tape-wrapped tongue protruding from the plate-shaped main body is suitably used when bending a wire harness.

The leg portion has a square, rectangular, circular or other arbitrary cross-sectional shape and is formed at least at a central portion of the plate-shaped main body. Two or more portions may be formed at predetermined intervals in the longitudinal direction of the portion. In addition, the legs are formed at predetermined intervals along the longitudinal direction of the legs, and the direction is from the tip side of the legs to the base side so as to form an acute angle with respect to the center line of the legs. It extends in an oblique direction toward it. Although the angle between the stick and the leg can be set arbitrarily,
65 degrees is preferred. This is because if the angle between the leg and the leg is too small, the wire group will not catch easily when inserted into the wiring harness branch, and if the angle is too large, the resistance when inserting into the wiring harness branch will be poor. Is too large.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 and FIG. 2 show an embodiment of a branch portion protector of a wire harness W / H according to the present invention. The protector 1 includes a plate-shaped main body 2 and the plate-shaped main body 2.
And a leg 3 extending substantially vertically from the center of the contact surface of the branch portion of the wire harness to the main line 10a, and both are integrally formed of polyvinyl chloride or another plastic elastic material. The plate-shaped main body 2 is formed in a rectangular shape, the width is set slightly larger than the outer diameter of the trunk 10a of the wire harness branch portion, and the length is set slightly larger than the outer diameter of the branch line 10b of the branch portion.

The leg 3 has a rectangular cross-sectional shape, and its tip is tapered to facilitate insertion into the wire harness branch. Also, on each surface of the leg 3, a plurality of burrs 4 are formed at predetermined intervals in the longitudinal direction, and extend obliquely from the distal end side of the leg 3 toward the base side. The angle between the stick 4 and the leg 3 is set to 40 degrees.

FIG. 2 shows a case where the protector 1 is attached to a T-shaped branch of a wire harness. Corrugated tubes 5a, 5b, and 5c are provided on the trunk 10a and the branch 10b of the wire harness W / H until the branch position is reached.
When the leg 3 of the protective device 1 is inserted into the trunk 10a at the branch position, the barb 4 provided on the leg 3 is easily bent due to elasticity. After the plate-shaped main body 2 comes into contact with the outer surface of the group of electric wires of the trunk line 10a at the branch portion of the wire harness, the plate-shaped main body 2 is slightly pushed in. Next, when the hand is released from the protector, the entire protector 1 is slightly pushed back by the elasticity of the wire harness or the like, and at the same time, the shrimp 4 is caught and locked by the wire group of the trunk line 10a, and the protector 1 is attached to the wire harness branching portion. The whole is fixed.

When the wire harness to which the protector 1 is attached is routed on a vehicle, the plate-shaped main body 2 is located on the vehicle body or other external interference material side, and the electric wire at the branch portion of the wire harness which is not protected by the corrugated tube. The group can be protected.

As described above, the protector 1 can be easily and quickly attached to the wire harness branch by only a very simple operation of inserting the leg 3 into the head of the wire harness branch. Further, since the number of parts is only one, the workability of assembly can be remarkably improved, and the cost can be reduced.

FIGS. 3A and 3B show a modification of the first embodiment. FIG. 3A shows a plate-shaped main body 2 having a circular shape.
FIG. 3B shows the plate-shaped main body 2 in a T-shape. With the T-shape, the plate-shaped main body 2 can be covered up to the branch line 10b side at the branch position.

FIGS. 4 and 5 show a second embodiment of the present invention, which is attached to a branch portion of a wire harness which is bent and arranged on a vehicle. Tape-wrapped tongue pieces 6a each having a narrow width at both ends in the direction.
6b, and ribs 7a, 7b bent in the direction opposite to the leg 3 are formed on the free ends of the tape-wrapped tongue pieces 6a, 6b. The other configuration is the same as that of the first embodiment, and the description is omitted.

The protector 1 according to the second embodiment has a corrugated structure in which the leg 3 is inserted into the trunk 10a of the branch portion of the wire harness, and the tape-wrapped tongue pieces 6a, 6b are externally fitted to the trunk 10a on both sides of the branch portion. Along with the tubes 5a and 5b, it is wound and fixed with an adhesive tape or other appropriate tape 8. Others are the same as the first embodiment.

As described above, when the main body 10a is fixed to the vehicle with the tape, when the wire harness is bent in the vehicle, the mounting strength can be increased by the amount of the adhesive tape wound. The harness route can be liberalized.

FIGS. 6 and 7 show a third embodiment, in which the plate-like main body 2 is curved in a semi-cylindrical shape, and the outer circumference thereof is made substantially the same as the half circumference of the main line 10a of the wiring harness branch portion. I have. Other configurations are the same as those of the first embodiment.

The protection device 1 of the third embodiment has the same attachment and operation of the wire harness W / H to the branch portion as in the first embodiment, but as shown in FIG. Of the trunk line 10a is covered with the plate-shaped main body 2, so that the branch portion of the wire harness W / H can be more reliably protected. In FIG. 7, the main line 1 of the wire harness W / H is used instead of the corrugated tube of FIG.
0a and the branch line 10b are wound with an adhesive tape 40.

FIG. 8 shows a modification of the fourth embodiment.
The tape wound tongue pieces 6a and 6b are protruded from both ends in the longitudinal direction of the plate-shaped main body 2 which is curved in the same semi-cylindrical shape in the embodiment. When the tape-wrapped tongue pieces 6a and 6b are tape-fixed to both sides of the trunk at the branch position, when the trunk is bent, the protector 1 can be reliably prevented from coming off the branch position.

[0025]

As is apparent from the above description, the present invention relates to a plate-shaped main body for contacting a wire harness branch portion protector with a wire harness branch portion, and a substantially vertical direction from a contact surface to the plate-shaped main body. It is composed of a leg that extends to and a plurality of burrs are provided on the leg, so only an extremely simple work of inserting the leg into the branch of the wire harness,
It can be easily and quickly attached to the wiring harness branch.

In addition, since the width of the plate-shaped main body is slightly larger than the outer diameter of the wire group of the wire harness to be abutted,
It is possible to reliably prevent a group of electric wires that are not protected by the corrugated tube or the like from coming into direct contact with the vehicle body or other external interference materials.

Further, when a tape-wrapped tongue piece is provided on the protective device and fixed to the wire group at the wire harness branch portion with tape,
The mounting strength can be increased, and the present invention can be applied not only to a T-shape but also to any wire harness branching portion that is bent and arranged on a vehicle. Therefore, the path can be liberalized when the wire harness is attached to the vehicle.

Further, when the plate-shaped main body is made substantially equal to one half of the outer circumference of the trunk portion of the wiring harness branch portion, and is formed into a semi-cylindrical shape, the half length of the trunk line at the time of mounting is obtained. Can be covered by the plate-shaped main body, so that the branch portion of the wire harness can be more reliably protected. Also,
Since the protector is composed of one part, the workability of assembly can be significantly improved, and the cost can be reduced.

[Brief description of the drawings]

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

FIG. 2 is an explanatory view showing a method of attaching the protective device of FIG. 1 to a wire harness branch.

FIGS. 3A and 3B are schematic views showing a modification of the plate-shaped main body of the protective equipment.

FIG. 4 is a perspective view of a wire harness branch portion protection device according to a second embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a state in which the protective device of FIG. 4 is attached to a wire harness branch.

FIG. 6 is a perspective view of a wire harness branch portion protector showing a third embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a state in which the protector of FIG. 6 is attached to a wire harness branch.

FIG. 8 is a perspective view of a wire harness branch portion protector according to a fourth embodiment of the present invention.

FIG. 9 is an explanatory diagram showing a conventional example.

FIG. 10 is an explanatory diagram showing another conventional example.

[Explanation of symbols]

 1: Protective equipment 2: Main body 10a: Trunk line 10b: Branch line 3: Leg 4: Shield 5a, 5b, 5c: Corrugated tube 6a, 6b: Tape wound tongue

Claims (3)

[Claims] 1. A plate-shaped main body which is brought into contact with an outer surface of a wire group of a wire harness branch portion, and a leg portion which extends substantially vertically from the plate-shaped body and is inserted into the wire group of the branch portion. A wire harness branching part protector, wherein a plurality of burrs are provided on the legs and the burrs are engaged with a group of electric wires. 2. The plate-shaped main body has a shape curved into a rectangular plate, a disk, a T-shape or an arc, and an electric wire is provided so as not to interfere with an external interference material on a trunk outer surface of a branch portion of the wire harness. The wire harness branch part protector according to claim 1, wherein the protector has a shape covering the group. 3. The wire harness branch part protector according to claim 1, wherein a tape-wrapped tongue protrudes from the plate-shaped main body.