JPS6330809Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a fastener for attaching a fixed object such as a wire harness to an object to be fixed such as the body of an automobile, and particularly relates to a fastener for attaching a fixed object such as a wire harness to an object to be fixed such as the body of an automobile. It concerns the fasteners for the.

[Prior art and its problems]

Conventionally, when attaching a wire harness or the like using an engagement groove provided in a vehicle body, a fastener as shown in FIG. 7 has been used. This fastener 11 includes a plate-shaped attachment piece 12 to which a wire harness or the like is attached, an elastic base 13 with a J-shaped cross section extending downward from the middle part of this attachment piece 12, and a step-like structure formed at the tip of the elastic base 13. The entire body is integrally molded by injection molding of plastic.

As shown in FIG. 8, this fastener 11 is used by being attached to an engagement groove 16 provided in a vehicle body or the like, which has an engagement recess 15 in its inner wall. That is, when the elastic base 13 is pushed into the engagement groove 16 after fixing, for example, the wire harness 17 to the attachment piece 12 with the tape winding 18, the elastic base 13 enters the engagement groove 16 in a deflated state, and is compressed by a certain amount. When pushed in, the engagement protrusion 14 engages with the engagement recess 15 on the inner wall of the engagement groove 16 due to the elasticity of the elastic base 13 and does not come out. Therefore, the wire harness 17 can be easily fixed to the engagement groove 16.

However, such conventional fasteners have a problem in that once they are attached to the engagement groove, they cannot be removed even if desired. If it is removed forcibly, the elastic base and the engaging protrusion will be damaged, making it impossible to reuse it. In addition, since the elastic base is J-shaped and has an open end, its dimensions change significantly due to shrinkage of the plastic during molding, making it difficult to obtain appropriate dimensions. There is also the problem that the fitting becomes unstable and it becomes easy to come off when external force is applied.

In addition, the structure of the above-mentioned fastener is based on the U.S. Pat.
It is described in Publication No. 23779.

[Means for solving problems and their effects]

The present invention provides a fastener that solves the problems of the prior art as described above.
A substantially elliptical cylindrical elastic base is integrally formed on the mounting piece for attaching the object to be fixed so that one side in the major axis direction thereof is connected to the above-mentioned mounting piece, and the elastic base is engaged with the middle part of the side surface of the elastic base. It is characterized in that the protrusion is integrally formed.

If the elastic base is made into an almost elliptical cylinder shape in this way,
By pressing and deforming the elastic base from the outside, the engagement protrusion can be removed from the engagement recess, making it possible to remove the fastener from the engagement groove, and also reducing dimensional changes due to material contraction.

〔Example〕

FIG. 1 shows an embodiment of the fastener of the present invention. This fastener 21 attaches a substantially elliptical cylindrical elastic base 23 to a mounting piece 12 for attaching a fixed object such as a wire harness, so that one side in the major axis direction is connected to the above-mentioned mounting piece 12 via a connecting piece 22. The elastic base 23 is integrally formed with an engaging protrusion 24 at the middle portion of the side surface thereof.
Reinforcing ribs 25 are formed on the surface of the connecting plate 22. The fastener 21 is integrally molded by injection molding using a material such as plastic such as polypropylene, in which the elastic base 23 is elastically deformed.

This fastener 21 can be used as follows. First, as shown in FIG. 2, after fixing the wire harness 17 to the mounting piece 12 with tape winding 18,
When the elastic base 23 is pushed into the engagement groove 16 in which the engagement recess 15 is formed in the inner wall, the elastic base 23 enters the engagement groove 16 while being elastically deformed into a flat shape. When the fastener 21 is pushed to a predetermined position, the elasticity of the elastic base 23 causes the engaging protrusion 24 to enter the engaging recess 15 in the engaging groove 16 and be caught there, so that the fastener 23 will not come out. Since the elastic base body 23 pushes the engagement protrusion 24 into the engagement recess 15 with the force of expanding within the engagement groove 16, the fastener 21 will not come off even if an external force is applied to it.

Next, when removing the fastener 21 from the engagement groove 16, as shown in FIG. 23 to deform it. Then, the engagement protrusion 24 engages the engagement recess 15.
Since it comes off, the fastener 21 can be removed without any damage by simply pulling it upward. When the elastic base body 23 comes out of the engagement groove 16, it is elastically restored to its original shape, so that it can be reused.

FIG. 5 shows a different example of how the fastener 21 is attached. In this example, the glass 27 and the glass 27
The engagement groove 16 is formed between a structure 28 made of an iron plate or the like that holds down the structure 28 and a plastic protector 29 attached to the edge of the structure 28. The elastic base 23 of the fastener 21 has its engagement groove 16
The engaging protrusion 24 is inserted into the protector 2.
It is designed to engage with an engagement recess 15 at the lower part of 9.

FIG. 6 shows another embodiment of the fastener of the present invention.
This fastener 31 has two elastic base bodies 23 provided at intervals on a mounting piece 32 having an L-shaped cross section. Each elastic base 23 has a substantially elliptical cylindrical shape, and an engaging protrusion 24 is integrally formed at the middle portion of the side surface thereof, as in the previous embodiment. By providing the plurality of elastic base bodies 23 with the engaging protrusions 24 on the mounting piece 32 in this way, even if the mounting piece 31 is long, it can be securely fixed.

Further, this fastener 31 is provided with a wire harness holding piece 33 in the middle part of the attachment piece 32. This presser piece 33 extends in a hook shape from one edge of the attachment piece 32, and when its tip is opened in the direction away from the attachment piece 32 and the wire harness is passed between it and the attachment piece 32, it is opened. , which returns to its original position due to its elasticity and grips the wire harness. Providing such a wire harness holding piece 33 is convenient because it can omit tape wrapping for fixing the wire harness at the middle part of the attachment piece 32.

Note that the fastener of the present invention can be used not only for attaching wire harnesses, but also for attaching electric wires, pipes, etc.

[Effect of idea]

As explained above, according to the present invention, the elastic base provided on the mounting piece is approximately elliptical, and the engagement protrusion is formed at the middle part of the side surface, so even after the fastener is attached to the engagement groove, the elastic base By deforming the base,
By removing the engagement protrusion from the engagement recess within the engagement groove, the fastener can be easily removed from the engagement groove. In addition, since the elastic base is a closed loop with an almost elliptical cylinder shape, there is little dimensional change due to material contraction.
Appropriate dimensions can be easily obtained. Therefore, there is an advantage that the engagement between the engagement protrusion and the engagement recess in the engagement groove is stable, and a reliable retaining function can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the fastener of the present invention, Figs. 2 to 4 are front views showing one use state of the fastener, and Fig. 5 is a front view showing another use state. , FIG. 6 is a perspective view showing another embodiment of the fastener of the present invention, FIG. 7 is a perspective view showing a conventional fastener, and FIG. 8 is a front view showing the state in which the fastener is used. 12... Attachment piece, 15... Engagement recess, 16...
...Engagement groove, 21... Fastener, 23... Elastic base,
24... Engaging protrusion, 31... Fastener, 32... Mounting piece.

Claims (1)

[Scope of utility model registration request] A substantially elliptical cylindrical elastic base is integrally formed on the mounting piece for attaching the object to be fixed so that one side in the major axis direction thereof is connected to the above-mentioned mounting piece, and the elastic base is engaged with the middle part of the side surface of the elastic base. A fastener characterized by integrally formed protrusions.