JPS629072Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a synthetic resin molded product having a substantially U-shaped cross section.

Examples of such synthetic resin molded products include automobile decorations or protectors such as automobile bumper protectors and hood top moldings.
There are synthetic resin molded products used for general purposes, and these are fixedly attached to the body of an automobile with the concave side of the generally U-shaped cross section facing inside.

Conventionally, in order to attach this type of synthetic resin molded product to the body of an automobile, for example, as shown in FIGS. A protrusion 15 is formed in the center, and a keyhole 16 for inserting the retainer is formed in the protrusion 15.
The synthetic resin molded product 1 was fixedly attached to the body 8 by inserting the retainer 3 with a bolt into the keyhole 16 and tightening the nut 9. 8a and 8b show the case where a bumper protector is attached, and FIGS. 9a and 9b show the case where a hood top molding is attached.

According to this conventional mounting structure, the nut 9
Since only the central part of the synthetic resin molded product 1 is drawn toward the body 8 when the parts are fastened together, the central part of the convex side of the substantially U-shaped cross section may be distorted, or both edges or the upper and lower ends of the cross section (body 8 and The rigidity of the parts that were in contact with each other was insufficient. In addition, especially when the approximately U-shaped cross section becomes large, it becomes unreliable in terms of strength and rigidity when installed, and manufacturing problems make it difficult to manufacture anything other than a straight shape, as shown in Figure 5. This method could not be applied to a roughly J-shaped object like this.

The present invention solves these problems by preventing distortion on the surface of the synthetic resin molded product during tightening, and after tightening, the synthetic resin molded product has sufficient strength and rigidity. An object of the present invention is to provide a mounting structure for a synthetic resin molded product that can reduce the weight of the product.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 to 5 show a first embodiment of the present invention, in which a synthetic resin molded product 1 is a bumper protector for an automobile. In these figures, the synthetic resin molded product 1 has a substantially U-shaped cross-sectional shape, and the substantially U-shaped portion forms the outer wall of the molded product, and the cross-sectional shape is approximately symmetrical left and right (or up and down). , and is fixedly attached to the body (bumper) 8 of the automobile with the recessed side facing inside (Fig. 3). At both edges of the synthetic resin molded product 1 on the side that contacts the body 8, flange portions 4 are formed which protrude inward toward the concave side of the approximately U-shaped cross section and approximately parallel to the surface of the body 8. A flange portion 5 is formed that protrudes inward on the recess side substantially parallel to the flange portion 4 of the flange portion 4, and a groove 20 large enough to insert the plate-shaped retainer 2 is formed between the flange portions 4 and 5. Ru. These grooves 20 have lengths corresponding to the dimensions of the retainer 2, and reinforcing ribs 6 are provided at both ends thereof so as to cover the entire area of the substantially U-shaped cross section in the cross-sectional direction.
7 is provided. These reinforcing ribs 6 and 7 are for preventing the synthetic resin molded product 1 from deforming with respect to its generally U-shaped cross section. One reinforcing rib 6 extends so as to close the groove 20, that is, to a position where it comes into contact with the surface of the body 8 when the synthetic resin molded product 1 is attached to the body 8, and also functions as a stopper for the retainer 2. The other reinforcing rib 7
is open at the groove 20 for insertion of the retainer 2.

A tightening bolt 3 is fixed to the center of the retainer 2 by welding or the like. In addition, a notch 10 is provided at the center of both edges of the retainer 2 (the portion inserted into the groove 20) to prevent it from falling off, while a protrusion 11 is provided at the center of the groove 20 at both edges of the synthetic resin molded product 1. (Figure 4). When the retainer 2 is inserted into the groove 20 from the reinforcing rib 7 side, the notch 10 of the retainer 2 engages with the protrusion 11 at the time of completion of insertion, thereby preventing the retainer 2 from falling off from the synthetic resin molded product 1.

Although only a part of the bumper protector, which is a synthetic resin molded product 1, is shown in Figures 1 and 2, the actual bumper protector is approximately J-shaped as a whole as shown in Figure 5, and there are several parts of the bumper protector as a whole, as shown in Figure 5. It has a mounting part as described above. Therefore, in actual installation, after inserting each retainer 2 into the groove 20 of each mounting part, insert the bolt 3 of the retainer 2 into the mounting hole of the body 8, and then tighten the nut 9 from the opposite side of the body 8. By tightening the synthetic resin molded product 1 with the body 8, the synthetic resin molded product 1 is fixedly attached to the body 8. Note that, as indicated by reference numeral 2' in FIG. 5, a nut 9' may be welded and fixed to the retainer 2', and then tightened with a bolt 3' from the opposite side of the body 8.

6 and 7 show a second embodiment of the present invention, in which the synthetic resin molded product 1 is a hood top molding for an automobile. The synthetic resin molded product 1 has a substantially U-shaped cross-sectional shape, and is fixedly attached to the vehicle body 8 with the concave side facing inside.
Although it is the same as the case of the above-mentioned first embodiment, in this second embodiment, the cross-sectional shape of the synthetic resin molded product 1 is not symmetrical in the left and right (or up and down) directions, and the spacing becomes narrower in the upper part of FIG. It has a similar shape. Therefore, the edge of one side (lower side in FIG. 6) that contacts the body 8 has flange parts 4 and 5 similar to the first embodiment, and a groove 20 is formed between the flange parts 4 and 5. However, only the flange portion 4 that contacts the surface of the body 8 is formed on the edge of the other side (upper side in FIG. 6). One edge of the retainer 2 is inserted into the groove 20 between the flange parts 4 and 5, and the other edge contacts only the flange part 4. Also,
In the second embodiment, recesses 14 are formed in the center of the flange portions 4 on both sides, and protrusions 12 that engage with these recesses 14 are formed on the retainer 2. When the retainer 2 is inserted into the groove 20 from the side of the reinforcing rib 7, the protrusion 12 of the retainer 2 moves along the inner edge of the flange portion 4, and the protrusion 12 near the recess 14 moves.
and fits into the recess 14. In this state, the retainer 2 is held by the synthetic resin molded product 1. Thereafter, the bolt 3 of the retainer 2 is inserted into the mounting hole of the body 8, and the nut 9 is tightened from the opposite side of the body 8.

As explained above, in the present invention, when fixing the synthetic resin molded product 1 having a substantially U-shaped cross section to the body 8 with the concave side of the substantially U-shaped cross section facing inside, both ends of the retainer 2 are also fixed. Since both edge flange portions 4 are tightened to the body 8, sufficient strength and rigidity can be given to the synthetic resin molded product 1 after tightening. Unlike other structures, it does not cause distortion. By employing the mounting structure of the present invention, the strength and rigidity are improved, so that the overall weight of the synthetic resin molded product 1 can be reduced.

[Brief explanation of the drawing]

Figures 1 to 5 show the first embodiment of the present invention; Figure 1 is an exploded perspective view before inserting the retainer, Figure 2 is a perspective view after inserting the retainer, and Figure 3 is a synthetic resin molded Figure 4 is a cross-sectional view of the mounting part of the product.
FIG. 5 is a sectional view along the longitudinal direction of the synthetic resin molded product. 6 and 7 show a second embodiment of the present invention,
FIG. 6 is a sectional view of the attachment part, and FIG. 7 is an exploded perspective view before inserting the retainer. FIGS. 8a and 8b and 9a and 9b are reference views showing the mounting structure of a conventional synthetic resin molded product. 1...Synthetic resin molded product, 2...Retainer, 4,
5...Flange part, 8...Body, 20...Groove.

Claims (1)

[Scope of utility model registration request] A synthetic resin molded product 1 having a substantially U-shaped cross section and with the substantially U-shaped portion forming an outer wall is fixedly attached to the body 8 with the concave side of the substantially U-shaped cross section facing inside. In the structure, a flange portion 4 is formed on both edges of the synthetic resin molded product 1 on the side that contacts the body surface, and protrudes inward toward the recess side of the approximately U-shaped cross section in parallel with the body surface. A mounting structure for a synthetic resin molded product, characterized in that a plate-shaped retainer 2 is provided in the recess and comes in contact with the body from the inside, and the synthetic resin molded product 1 is fixed to the body by tightening the retainer to the body.