JPS6234016Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an insert pin used, for example, in assembling interior parts of automobiles and the like.

Conventionally, when assembling interior parts of automobiles, such as instrument panels, etc., something called an insert pin has been used. After the insert pin is attached to the component to be assembled (the instrument panel in the above example), the insert pin can be easily assembled by being inserted into the component to be assembled (the body side). Ru. In addition, the insert pin is usually formed from a single piece of synthetic resin in order to simplify the assembly process. In other words, by utilizing the elasticity of synthetic resin,
This method is used to elastically engage the member to be assembled. However, since it is made of synthetic resin, it suffers from significant thermal expansion and contraction, which has been pointed out as a drawback in that it tends to come off.

The present invention was devised in view of this. An object of the present invention is to provide an insert pin that can provide a stable holding force even against the above-mentioned thermal changes.

Embodiments of the present invention will be described below with reference to the drawings. The insert pin P of this example is formed of two members, a pin body 1 and an engagement band 4, as shown in FIG.

First, the pin body 1 will be explained. The pin body 1 is molded from synthetic resin, and first and second insertion portions 1A and 1B are formed in the upper and lower halves of the pin body 1 for the member to be assembled and the member to be assembled, respectively.

The first insertion portion 1A is formed into a two-stage substantially conical shape with a tapered end, and a retaining edge 2 against the assembled member is formed at the step.

The second insertion portion 1B is formed to have a smaller diameter than the first insertion portion 1A, and is formed to extend integrally and coaxially below the first insertion portion 1A. Further, the distal end side of the second insertion part 1B is formed into a tapered shape in order to ensure smooth insertion operation, while the following engagement band 4 is formed before reaching the first insertion part 1A. An insertion shaft portion 3 to be fitted is formed.

The engagement band 4 is formed of a metal material into a substantially cylindrical shape with a flange 5 on the upper edge, and a cut 6 formed along the axial direction allows the insertion shaft portion 3 to be closed.
It can be elastically attached to. Further, a pair of engaging pieces 7, 7 are formed protruding from the side surface of the engaging band 4 in a substantially symmetrical manner. Each of the engaging pieces 7, 7 is formed by cutting and raising the side surface of the engaging band 4 upward and outward, respectively. And each engagement piece 7,7 is
When the insert pin P is inserted, elastic deformation in the direction of mutual narrowing is allowed, and on the other hand, when an external force is applied to the insert pin P in the direction of withdrawal, the free end edge of each engaging piece 7, 7 It can be locked to the assembly member.

Next, a specific example of the installation work using the insert pin P of this example will be explained by taking the installation work of an automobile instrument panel 8 (hereinafter simply referred to as the panel) as an example.

In the illustrated installation work, a clip C as shown in FIG. 2 is used together with an insert pin P. Before explaining the installation work, this clip C will first be briefly described.

The clip C is used for the first insertion portion 1A of the insert pin P, and is formed of a synthetic resin material into a bag shape that opens upward. Further, a flange edge 12 is formed on the opening periphery of the clip C to be engaged with the edge of an insertion hole 10 bored at a predetermined portion on the body 9 side. Furthermore, a pair of cut-out pieces 11 are provided opposite to each other at symmetrical portions of the clip C. Both cut-out pieces 11 are allowed to be elastically deformed in both opening and closing directions, and can be releasably engaged with the insertion hole 10.
The first insertion portion 1A of the pin body 1 can be pushed in, and claw edges 13 that can be engaged with the retaining edge 2 are formed inside the first insertion portion 1A.

Now, prior to the installation work of the panel 8, the above-mentioned clip C is inserted into the insertion hole 10 on the body 9 side. Under this, insert the insert pin P into the panel 8 side. That is, the second insertion portion 1B of the insert pin P is inserted into the insertion boss portion 14 protruding from a predetermined portion of the inner surface of the panel 8, and the first insertion portion 1A side is exposed. In addition, at the time of this insertion, as described above, both the engaging pieces 7, 7 of the engaging band 4 are narrowed and deformed, and the second insertion part 1B is
It is also pushed into the insertion boss portion 14.
After the installation of the insert pins P on the panel 8 side is completed in this way, the installation work of the panel 8 on the body 9 side is performed. That is, while holding the panel 8, insert the first insertion portion 1A of each insert pin P.
While fitting the clips C to the clips C on the body 9 side, push the entire panel 8 firmly. This results in
The first insertion portion 1A is inserted while pushing and spreading the cut-out pieces 11, 11 of each clip C, and as a result, the retaining edge 2 and the claw edge 13 are engaged. In this way, the panel 8 can be firmly attached to the body 9 without wobbling.

Further, in this example, when an external force is applied to the panel 8 in the direction of withdrawal, both the engagement pieces 7 of the engagement band 4 bite into the inner wall of the insertion boss portion 14, so that the panel 8 is prevented from coming off reliably. (See Figure 3). Furthermore, in the fitting between the second insertion part 1B and the insertion boss part 14, unlike the conventional type which uses a fitting force (fitting force due to close contact) using the elasticity of synthetic resin, the metal engagement pieces 7, 7 bite into each other. Since the locking mechanism is designed to prevent it from coming off, the locking force will not decrease even when the surrounding heat changes.
maintained in normal condition.

In addition, both the first and second insertion portions 1A, 1B are as follows:
In any case, the properties are not limited to the shapes shown in the drawings, and the properties vary depending on the shape of the insert pin P into which the insert pin P is inserted. For example, the first insertion portion 1A may be formed in a cylindrical shape as shown in FIG. In this case,
It is conceivable that the corresponding clip C' be provided with a pair of engaging leg pieces 15, 15 that can be expanded and deformed, for example. That is, by the insertion operation of the first insertion part 1A, both engaging leg pieces 15, 15 are pushed apart,
This locks the body 8 side. Furthermore, it goes without saying that the clips C and C' are not essential components of the present invention, and may be omitted. For example, although not shown, it is also possible to use the first insertion portion 1A as a screw shaft and use a nut (which may be made of resin) to be screwed onto the screw shaft to perform the assembly work. Furthermore, both the first and second insertion portions 1A,
The engagement band 4 may be fitted to each of the parts 1B.

As is clear from the above description, the present invention is an insert pin for fixing a mounting member to be assembled to the body of a vehicle, which consists of a synthetic resin pin body and a metal engagement band. The pin body is formed with a second insertion part that can be inserted into a hollow boss part protruding from the mounting member and into which the engagement band can be fitted, and a first insertion part is coaxially formed on the other side. The engaging band has an engaging piece cut and raised outward so as to be able to bite into the inner wall of the boss portion, and the first insertion portion side of the pin body is provided with a hole at an appropriate position in the body. It can be elastically engaged with the insertion hole in a detachable manner and can be fitted into a clip that can be engaged with the first insertion part.

Therefore, according to the present invention, since the metal engagement band is engaged with the mounting member by the engagement piece, it is possible to prevent a decrease in the engagement force due to thermal changes, unlike the prior art. Further, since the mounting member is fastened via a removable clip, when the mounting member needs to be removed, it is easy to remove the mounting member.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is an exploded perspective view of the insert pin of the present invention, FIG. FIG. 3 is an enlarged sectional view showing how the engagement piece bites, and FIG. 4 is a sectional view showing how another example of the insert pin is attached to the instrument panel. 1... Pin body, 3... Insertion shaft portion, 4... Engagement band, 7... Engagement piece, 8... Instrument panel, 9... Body, C, C'... Clip, P
...Insert pin.

Claims (1)

[Scope of utility model registration request] An insert pin for fixing a mounting member to be assembled to the body of a vehicle, consisting of a synthetic resin pin body and a metal engagement band, with the pin body protruding from the mounting member. A second insertion part is formed which can be inserted into the hollow boss part and into which the engagement band can be fitted, a first insertion part is coaxially formed on the other side, and the engagement band is fitted with the engagement band. An engaging piece that can bite into the inner wall is cut and raised outward, and the first insertion portion side of the pin body can be releasably engaged with an insertion hole drilled at an appropriate position in the body. An insert pin characterized in that it can be fitted into a clip that is large and can be engaged with a first insertion part.