JPH11215667A - Clamp for wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp which can facilitate removing of a wire harness at the time of scrapping a vehicle. SOLUTION: A clamp 11 is formed into a separated body structure consisting of a fixed part 12 and a clip part 13, a fitting hole 15 is formed at the base part of the clip part 13, and an engaging protrusion 14 for engaging with it is protrudingly formed at the fixed part 12. An engaging part 14b enlarging as it goes toward its front end is formed at the base end part of the engaging protrusion 14. An engaging opening-edge part 15b whose diameter increases as it goes inward, corresponding to the engaging part 15b, is formed into an undercut-shaped fitting structure at the entrance part of the fitting hole 15. The contact surface part between the engaging part 14b and the engaging opening-edge part 15b is formed so as to be an induction inclined surface 16 to which the force in such a direction as to remove the fixed part 12 acts with the engaging opening-edge part 15b enlarged when the tension in such a direction as to separate the fixed part 12 acts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp for a wire harness, and more particularly to a clamp for separating a wire harness from a vehicle body when the vehicle is disassembled.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, a clamp 1 for fixing a wire harness to an automobile panel has a fixing portion 2 attached to an outer periphery of the wire harness, and is inserted into an attachment hole of a vehicle body panel and locked. The clip portion 3 to be formed is integrally formed of a synthetic resin.

[0003]

Recently, there has been an increasing need for separate disposal and recycling of materials for automobile parts, and the above-mentioned clamps can not only securely fix the wire harness to the body, but also provide them as required. Therefore, it is demanded that it can be easily removed from the body and recycled. However, in the general clamp 1 described above, the fixing portion 2 and the clip portion 3 are integrally formed, and the clip portion 3 has a structure in which the clip portion 3 is not easily pulled out once engaged with the mounting hole. The work of removing the wire harness at the time has been difficult.

On the other hand, in a wire harness clamp, the fixing portion and the clip portion are made of separate members, which are connected to each other.
And Japanese Patent Application Laid-Open No. 9-140032 can be found. However, each of these has a structure in which once the fixing portion and the clip portion are once joined together, the two cannot be easily separated like the integrated type, and the ease of removal during disassembly was not considered.

[0005] The present invention has been made in view of the above-mentioned problem, and when dismantling, the fixing portion of the clamp and the clip portion are provided.
An object of the present invention is to improve the workability of removing a wire harness from a body by adopting a structure that can be easily separated when a constant tensile force acts.

[0006]

In order to solve the above-mentioned problems, the present invention is directed to the first aspect of the present invention, wherein a fixing portion made of synthetic resin and attached to a wire harness is provided separately from the fixing portion. A clip portion that is inserted and locked into the mounting hole of the panel, a fitting hole is provided at a base of the clip portion, and an engaging projection that removably engages with the fitting hole protrudes from the fixing portion. At the base end of the engaging projection, an engaging portion that expands toward the distal end is formed, and at the entrance of the fitting hole, the engaging portion expands toward the inside corresponding to the engaging portion. An engaging rim portion having a diameter is formed, and the engaging rim portion and the engaging portion have an undercut-shaped fitting structure. On the other hand, a contact surface between the engaging portion and the engaging rim portion is arranged with respect to the clip portion. When the pulling force in the direction to separate the fixing part is applied, It provides a wire harness clamp, characterized in that has a induction inclined surface exerting.

According to the above configuration, the engaging projection of the fixing portion can be engaged with the engaging hole of the clip portion to be integrated, and at this time, the engagement between the engaging portion of the engaging projection and the engaging hole can be achieved. Since an undercut fitting structure is formed at the joint edge, the integrated structure can be stably maintained, and the function as a fixture of the wire harness can be sufficiently exhibited. On the other hand, when the wire harness is disassembled, since the contact surface between the engaging portion and the engaging edge is a guiding inclined surface, by pulling the fixing portion away from the clip portion, the action of the guiding inclined surface is achieved. The engaging edge is elastically deformed and expanded, so that the fixing portion can be removed. For this reason, the wire harness can be easily removed from the body together with the fixing portion, which can contribute to the promotion of dismantling work for recycling.

The engaging portion and the engaging edge have a rectangular outer shape (claim 2). This prevents rotation between the fixed portion and the clip portion even though the wire harness clamp has a structure in which the fixed portion and the clip portion are fitted to each other. A reliable function as a fixing tool can be achieved without occurrence.

The engagement projection is formed with an introduction portion which is reduced in size from the engagement portion toward the distal end and has a diameter smaller than the diameter of the entrance portion of the engagement edge of the engagement hole. Item 3). With this configuration, when the fixing portion is engaged with the clip portion, the engagement opening edge portion is sequentially enlarged in diameter by the guide of the introduction portion, so that the engagement operation with the engagement portion having the undercut structure is performed. Performance can be improved.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show an embodiment of a wire harness clamp according to the present invention, in which a clamp 11 is made of a synthetic resin, and a fixing portion 12 attached to the outer periphery of the wire harness W / H, and the fixing portion 12 It is a separate member and includes a clip portion 13 which is inserted and fixed in the mounting hole H of the vehicle body panel P.

At the base end 12a of the fixing portion 12, a band 12b is integrally extended, and a locking portion 12c for receiving the band 12b and locking it in a retaining state is formed, and the wire harness W / The outer periphery of H can be fastened and fixed by a band 12b. The fixing part 12
In addition to the band 12b, as shown in FIG. 4, a plate-shaped fixing plate 12d that is fixed to the outer periphery of the wire harness W / H by tape winding may be used.

At the base end 12a, a band 12b
An engagement protrusion 14 having a rectangular outer shape is protrudingly provided on the side opposite to the direction in which the clip portion 13 extends. At the base of the engaging projection 14, an engaging portion 14b is formed which expands in an inclined manner toward the distal end, and an introduction portion which continues to the engaging portion 14b and decreases in an inclined manner toward the distal end. 14c. That is, the engagement protrusion 14
Has a joining shape of the truncated pyramid-shaped engaging portion 14b and the introducing portion 14c, and the boundary between the engaging portion 14b and the introducing portion 14c is a large-diameter portion that protrudes most. The diameter of the distal end of the introduction portion 14c is smaller than the diameter of an entrance 15a of the fitting hole 15 described later.

The clip portion 13 has a cylindrical base portion 13.
a shaft 13b protruding outward from one end of the shaft 1a;
A locking blade 13c protruding from both ends from the tip of 3b. The locking blade 13c is inserted into a mounting hole H of the vehicle body panel P and locked. A receiving portion 13d is formed on the end surface of the base portion 13a on the locking blade 13c side, protruding in a bowl shape toward the locking blade 13c, and elastically abutting on the vehicle body panel P.

On the side of the base 13a opposite to the direction in which the locking blades 13c protrude, there is formed a fitting hole 15 with which the engaging projection 14 of the fixing portion 12 is removably engaged.
At the entrance 15a of the fitting hole 15, there is formed an engagement edge 15b whose diameter increases as it goes inward corresponding to the shape of the engagement portion 14b of the engagement protrusion 14. And the engaging portion 14b constitute an undercut fitting structure. Further, a deep portion of the fitting hole 15 continuing from the engagement edge portion 15b is a receiving hole portion 15c corresponding to the outer shape of the introduction portion 14c of the engagement projection 14.

In the above-mentioned fitting structure, the contact surface between the engaging portion 14b and the engaging lip 15b serves as a guide inclined surface 16 for promoting the detaching operation when the fixing portion 12 is separated from the clip portion 13. I have. That is, when a required instantaneous pulling force in the direction of pulling away from the clip portion 13 acts on the fixing portion 12, the engagement edge portion 15 b is elastically pushed by the action of the guide inclined surface 16 as shown in FIG. 6. The fixing portion 12 is easily opened by being spread.
The inclined area of the guide inclined surface 16 is necessary for the clamp 11 to hold the wire harness W / H in a fixed state, and to separate the fixing portion 12 from the clip portion 13 when the wire harness W / H is disassembled. The inclination angle and the width are set in relation to the appropriate pulling force.

The clamp 11 is, as shown in FIG.
Since the fixing portion 12 and the clip portion 13 are separated from each other, the engaging projections 14 of the fixing portion 12 are forcibly fitted into the engaging holes 15 of the clip portion 13 to be integrally engaged when used. At the time of the fitting operation, the introduction portion 14c at the tip of the engagement protrusion 14 is inserted into the entrance portion 15a of the fitting hole 15 having a larger diameter.
Are inserted sequentially. At the boundary between the introduction part 14c and the engagement part 14b, the diameter of the entrance part 15a is larger than that of the entrance part 15a. Therefore, the entrance part 15a is sequentially elastically pushed out by the inclined surface of the introduction part 14c. The engagement portion 14b is engaged with the engagement portion 15b in an undercut state, and the engagement state is stably maintained. In this state, as shown in FIG. 5, in the same manner as a normal clamp, the band 12b of the fixing portion 12 is used to fix the outer periphery of the wire harness W / H, and the clip portion 13 is inserted into the mounting hole H of the vehicle body panel P. By locking, the wire harness W / H is attached to the vehicle body panel P.

On the other hand, to disassemble the wire harness W / H from the vehicle body panel P when disassembling the vehicle, the wire harness W / H of the portion attached by the clamp 11 is instantaneously pulled, so that the fixing portion 12 is removed. At the same time, the wire harness W / H is separated from the clip portion 13. At this time, when an instantaneous pulling force acts on the fixing portion 12, as shown in FIG. 6, the guiding surface which is the contact surface between the engaging portion 14 b of the engaging protrusion 14 and the engaging edge 15 b of the fitting hole 15 is formed. Slope 1
6, the pulling force acts as a force in a direction to elastically expand the diameter of the engagement edge portion 15b.
Is easily separated from the clip portion 13.
In this way, the wire harness W / H is removed from the vehicle body panel P together with the fixing portion 12 to be recycled.

[0018]

As is apparent from the above description, according to the present invention, when the vehicle is dismantled, the wire harness is subjected to an instantaneous pulling force in the detaching direction, so that the wire harness is fixed together with the clamp fixing portion to the vehicle body panel. It can be easily removed from. Therefore, it is possible to contribute to the separate disposal and recycling of the materials of the automobile parts.

[Brief description of the drawings]

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

FIG. 2 is an exploded perspective view of the clamp of FIG.

FIG. 3 is an enlarged perspective view of a main part.

FIG. 4 is a view showing another embodiment of a fixing unit.

FIG. 5 is a cross-sectional view showing a mounting state of a wire harness by a clamp.

FIG. 6 is a view showing a state in which a fixing portion of the clamp is removed.

FIG. 7 is a perspective view showing a conventional clamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Clamp 12 Fixed part 12a Base end part 13 Clip part 13a Base part 14 Engagement projection 14b Engagement part 14c Introducing part 15 Fitting hole 15a Entrance part 15b Engagement edge part 16 Guide slope

Claims (3)

[Claims] 1. A fixing part made of a synthetic resin and attached to a wire harness, and a clip part which is separate from the fixing part and is inserted and locked in a mounting hole of a vehicle body panel. A fitting hole is provided in the base, and an engaging protrusion detachably engaged with the fitting hole is protruded from the fixing portion, and a base end of the engaging protrusion expands toward the distal end. At the same time, an engaging edge is formed at the entrance of the fitting hole to increase in diameter toward the inside corresponding to the engaging portion. An undercut-shaped fitting structure is provided. On the other hand, the contact surface between the engaging portion and the engaging edge is expanded when the pulling force acts on the clip portion in a direction to separate the fixing portion. Wire harness characterized by an inclined guide surface for applying directional force Clamp for safety. 2. The wire harness clamp according to claim 1, wherein the engaging portion and the engaging edge have a rectangular outer shape. 3. An introduction portion is formed on the engagement protrusion, the diameter of which is reduced from the engagement portion toward the distal end, and is smaller than the diameter of the entrance portion of the engagement edge of the engagement hole. The clamp for a wire harness according to claim 1 or 2.