JPH0649302B2 - How to fix the clip seat - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clip seat fixing method for fixing an automobile clip seat to an interior part by foam molding of a resin.

[0002]

2. Description of the Related Art A conventional method for fixing an automobile clip seat will be described below.

When mounting a door trim, which is an interior part for an automobile, on a door panel, a clip fitted to a clip seat is mounted at a predetermined position on the door panel mounting surface of the door trim, and the clip is pressed into a mounting hole formed in the door panel. The door trim is attached to the door panel.

FIG. 6 is a perspective view of a conventional clip seat 1. In the clip seat 1, an iron plate is formed by pressing or punching, a fitting portion 2 for fitting and locking a clip, and this fitting portion. A vertical wall 3 for holding 2 and a flange portion 4 are provided.

When fixing the iron clip seat 1 to the foaming mold 20, a silicone rubber bifurcated cap 10 is inserted into the fitting portion 2 of the clip seat 1 to cover the fitting portion 2, and urethane is used as the fitting portion. Prevent it from wrapping around. Next, as shown in FIG. 7, when the clip seat 1 is attached to a predetermined location of the foaming die 20, the magnet 21 preset in the foaming die 20 is attached to the mounting portion 4a of the flange portion 4 of the clip seat 1.
Are fixed and the clip seat 1 is positioned on the foaming mold 20.

Further, when the foaming mold 20 is set in a lower mold not shown and hard urethane is injected and foamed, a door trim 6 is molded as shown in FIG.

[0007]

However, in the above-mentioned conventional structure, the iron clip seat 1 has a complicated shape because the iron plate is press-molded or punch-molded, and therefore has a small degree of freedom. However, there are problems that it is difficult and that deformation is likely to occur due to springback during press molding.

Further, urethane is apt to adhere to the iron clip seat 1, and in order to avoid it, it is necessary to pretreat it with a release agent such as wax or silicone oil, which requires a lot of man-hours. Had.

The present invention solves the above-mentioned problems of the prior art. The clip seat is resin-molded, a complex shape can be molded, the dimensional accuracy is high, and a mold release agent is not required, and the cost is low. It is intended to provide a fixing method of.

[0010]

In order to achieve this object, a method of fixing a clip seat according to the present invention is to cover the fitting part of the clip seat for fitting and locking the clip with a cap and to make the clip seat of a foam type. In the method of fixing the clip seat by positioning the magnet on the inner surface and resin foam molding integrally with the interior parts, and fixing the clip seat to the interior parts, the clip seat is resin molded and positioned on the outer surface of the cap. It has a structure in which an iron plate which has a protrusion and is attracted to a magnet is embedded.

[0011]

With this configuration, the resin clip seat is not limited in shape and can be formed in a complicated shape, has high dimensional accuracy, and does not require a release agent. Therefore, the cost of fixing the clip seat is low. Can be obtained.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same parts as those shown in the conventional example are designated by the same reference numerals.

1 and 2 are perspective views of a clip seat 1 for an automobile according to the present invention. The clip seat 1 is integrally molded with a resin such as polypropylene or polyethylene, and a clip 5 is fitted and locked. It is provided with a fitting portion 2 that holds the fitting portion 2, and a vertical wall 3 and a flange portion 4 that hold the fitting portion 2.

The cap 10 is a bifurcated protective member made of silicone rubber and is inserted into the fitting portion 2 to cover the fitting portion 2 and prevent urethane from wrapping around the fitting portion 2. Also,
On the outer surface of the cap 10, an iron plate 11 having a positioning projection 12 is embedded. The iron plate 11 is embedded by setting the iron plate 11 in advance in a silicone rubber molding die and pouring the silicone rubber into the molding die, and the hardness of the silicone rubber can be set arbitrarily. In order to prevent the iron plate 11 from peeling off from the silicone rubber, an adhesive agent is applied to the iron plate 11 or a wraparound portion 13 of the silicone rubber is formed around the iron plate 11 as shown in FIG. Good.

As shown in FIG. 4, the foaming mold 20 has a magnet 22 embedded in a predetermined position, and a hole 23 is bored in the inner surface of the magnet 22 so that the magnet 2 can be formed.
2 and the hole 23 are respectively the iron plate 11 and the protrusion 1 of the cap 10.
Corresponds to 2.

The operation of the fixing method of the clip seat constructed as described above will be described below. When the clip seat 1 into which the cap 10 is inserted is attached to a predetermined position of the foaming mold 20, the magnet 22 and the hole 2 of the foaming mold 20 are attached.
3, the iron plate 11 and the projection 12 of the cap 10 of the clip seat 1
Are fixed and the clip seat 1 is positioned on the foaming mold 20. Further, the foam mold 20 is set in a lower mold (not shown), and hard urethane is injected and foamed to form the door trim 6.

As described above, according to this embodiment, the clip seat 1 is resin-molded and the fitting portion 2 of the clip seat 1 is covered with the silicone rubber cap 10.
Since the iron plate 11 which has the positioning projection 12 on the outer surface of and is attracted to the magnet 22 is embedded, the clip seat having a complicated shape can be formed, the dimensional accuracy is high, and the release agent is not required. It is possible to obtain an inexpensive fixing method for the clip seat.

Although hard urethane does not have good adhesion to polypropylene, polyethylene, etc., if the clip seat 1 is embedded in the hard urethane door trim 6 and foam-molded as shown in FIG. 5, the strength will be sufficient. To be kept.

[0019]

As described above, according to the present invention, the fitting portion of the clip seat for fitting and locking the clip is covered with the cap, and the clip seat is positioned with respect to the magnet provided on the inner surface of the foaming mold, and the interior parts are provided. In a method of fixing a clip seat, which is integrally foam-molded with a resin to fix the clip seat to an interior component, the clip seat is resin-molded, and an iron plate that has a positioning projection on the outer surface of the cap and is attracted to a magnet is embedded. By doing so, a clip seat with a complicated shape can be molded, the dimensional accuracy is high, and a cost-effective method for fixing the clip seat can be obtained without the need for a release agent.

[Brief description of drawings]

FIG. 1 is a perspective view of a clip seat according to an embodiment of the present invention.

FIG. 2 is a perspective view of a method for fixing a clip seat for an automobile according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a modified example of the cap of the present invention.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a cross-sectional view of a modified example of the method of fixing the clip seat of the present invention.

FIG. 6 is a perspective view of a conventional clip seat.

FIG. 7 is a cross-sectional view of a conventional method for fixing an automobile clip seat.

FIG. 8 is a cross-sectional view of a conventional automotive clip seat after being fixed.

[Explanation of symbols]

1 Clip Seat 2 Fitting Part 4 Flange Part 5 Clip 6 Interior Trim Door Trim 10 Cap 11 Iron Plate 12 Protrusion 20 Foaming Type 22 Magnet 23 Hole

Claims (1)

[Claims] 1. A fitting portion of a clip seat for fitting and locking a clip is covered with a cap, the clip seat is positioned on a magnet provided on an inner surface of a foaming mold, and resin foam molding is performed integrally with an interior part. In the fixing method of the clip seat for fixing the clip seat to the interior component, the clip seat is resin-molded, and an iron plate for attracting to a magnet is embedded, which has a projection for positioning on the outer surface of the cap. How to fix the clip seat.