JP2548884Y2 - Mounting structure for synthetic resin products - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for mounting a synthetic resin product to a product to be mounted. More specifically, a tubular boss protruding from a mounting portion of the synthetic resin product is attached to a target product to be mounted. The present invention relates to an attachment structure for attaching a synthetic resin product to an article to be attached by being inserted into a formed insertion hole and caulking while melting and projecting the protruding end of the boss.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Utility Model Laid-Open Publication No.
No. 42, Japanese Utility Model Publication No. 55-41526, etc., a case where an ornament board is attached to a garnish of an automobile, an interior material is attached to an inner panel, or a synthetic resin decorative board such as a fan is used as a base. 9, a cylindrical boss 1a protruding from the surface of the mounting portion of the synthetic resin product 1 is inserted into the insertion hole 2a of the mounted product 2, and the boss 1 protruding through the insertion hole 2a as shown in FIG.
At the same time, the tip of a is heated and pressed to melt and deform, and at the same time, is welded to the article to be attached, and the synthetic resin product 1 is attached to the article to be attached 2.

[0003]

However, since the conventional boss and insertion hole have a simple shape without any contrivance, when the boss is heated and pressurized and swaged,
As shown in FIG. 9, the central portion of the crimping surface of the tip of the boss 1a flows into the boss cylinder and hangs down to form a dent on the surface, so that the mounting strength between the synthetic resin product 1 and the article to be mounted 2 is significantly reduced. However, there has been a problem that the mounting portion is easily damaged.

The present invention has been made to solve such a problem, and an object of the present invention is to eliminate the drooping at the time of caulking, secure the mounting strength between the synthetic resin product and a product to be mounted, and mount the product. An object of the present invention is to provide a mounting structure for a synthetic resin product in which breakage of a part is avoided.

[0005]

In order to achieve the object, the present invention inserts a cylindrical boss projecting from the surface of a synthetic resin product into an insertion hole formed in an article to be attached, and inserts the projecting end thereof. In a synthetic resin product mounting structure in which a synthetic resin product is attached to an attached product by caulking by melting, a basic structure is provided in which either one of the boss or the insertion hole is formed with a partition member for partitioning the inside thereof. It is assumed that.

Of course, when a partition member is formed in the insertion hole, since the boss end is guided through the insertion hole, a cut of a desired length is previously provided at the position of the boss end corresponding to the partition member. It is necessary to form a notch.

[0007]

A boss having, for example, a cylindrical shape and having a circumference divided into two by a notch is protruded from a mounting portion of the synthetic resin molded product. One of the attachments has an insertion hole through which the boss is inserted. The insertion hole is formed with a partition member that forms a characteristic part of the present invention by dividing the insertion hole into two parts, and the boss is easily inserted into the insertion hole by the notch despite the presence of the partition member. I can do it.

When the article to be mounted is attached to the synthetic resin product, the partition member formed in the insertion hole is inserted into the notch of the boss, and the boss is inserted through the insertion hole. Next, the boss end protruding from the insertion hole is crimped and attached while being heated and pressed and melted in a conventional manner. At this time,
According to the present invention, the molten portion at the tip of the boss is supported from below by the partition member, and drooping into the inside of the boss becomes extremely slight. It is not formed and improves the mounting quality in appearance.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments. 1 and 2 show a first embodiment in which the present invention is applied to a mounting structure of a center pillar garnish and a slide plate of an automobile, and FIGS. 3 and 4 show the mounting structure of a base of a fan and a decorative plate according to the present invention. Example 2 applied to FIG. 5, FIG.
FIG. 6 to FIG. 6 show modifications of the first embodiment shown in FIGS. 1 and 2 above, all of which are examples in which a partition member forming a characteristic portion of the present invention is formed in an insertion hole of an attached product. Is shown.

First, the embodiment shown in FIGS. 1 and 2 will be described. In these figures, reference numeral 10 denotes a center pillar garnish which is a synthetic resin product of the present invention, and reference numeral 20 denotes a slide plate which is a product to be attached to the center pillar garnish 10.

As shown in FIG. 1, a boss 11 having a cylindrical shape and having a circumference divided into two by a notch 11a is projected from a slide plate mounting portion of the center pillar garnish 10. Although not shown, the protruding end of the notch 11 is formed so as to gradually increase the notch width toward the front end, so that a partition member 21a described later formed in the insertion hole 21 of the slide plate 20 can be easily formed. The notch 11 can be fitted.

On the other hand, as shown in FIG. 1, the center pillar garnish mounting portion of the slide plate 20 mounted on the center pillar garnish 10 is provided with the boss 1.
1 is formed. The insertion hole 21 is formed with a partition member 21a serving as a characteristic part of the present invention by dividing the insertion hole 21 into two parts. The boss 11 is inserted into the insertion hole 21 regardless of the presence of the partition member 21a. It can be easily inserted.

When attaching the slide plate 20 to the center pillar garnish 10, the boss 11 is inserted through the insertion hole 21 so that the partition member 21a formed in the insertion hole 21 is inserted into the notch 11a of the boss 11. Next, while the end protruding from the insertion hole 21 is heated and pressed and melted in a conventional manner, it is crimped as shown in FIG. 2 to complete the mounting. At this time, according to the present invention, the melting portion of the boss tip is supported from below by the partition member 21,
The drooping inside the boss 11 becomes extremely slight,
In addition to ensuring the strength of the caulked portion, no dent is formed in the center of the caulked surface of the boss 11, and the mounting quality is improved in appearance.

FIGS. 5 and 6 show an example in which the first embodiment is modified. According to this modification, the notch 11a of the boss 11 is made one, and the partition of the boss insertion hole 21 is formed. The member 21a is formed in a cantilever shape. In this example, the number of the notches 11a formed in the boss 11 is one, so that the reduction in the boss strength due to the notches 11a is smaller than in the first embodiment.

The second embodiment of the present invention shown in FIGS. 3 and 4 is essentially the same as the first embodiment in the mounting structure thereof, but in this embodiment, the decorative plate 120 which is an article to be mounted. Part of the insertion hole 121 is cylindrical,
It is formed thicker than other plane portions, and increases the strength of the peripheral portion of the insertion hole 121. In the drawing, reference numeral 110 denotes a fan base, 111 denotes a boss, 111a denotes a notch, and 121a denotes a partition member.

FIGS. 7 and 8 show a third embodiment of the present invention. In the third embodiment, partition members 21a, 121a are provided in the insertion holes 21, 121, whereas in the third embodiment, the insertion holes 221 are provided. Is a simple circular hole, and the boss 21 is inserted through the insertion hole 221.
A partition member 211a is formed in the hollow part of the first part. With such a configuration, the notch is eliminated from the boss 211, and the boss strength is increased. Particularly, as shown in the illustrated example, the partition member 211a is attached to the boss 21.
In the case where the partition member 211a is formed in the entire height direction, the boss strength is further increased because the partition member 211a has a function of a reinforcing material. Note that reference numeral 210 in the figure denotes a synthetic resin product, and 220 denotes an attached product.

[0017]

[Effect of the Invention] As is clear from the above description, according to the mounting structure of the synthetic resin product of the present invention, the boss insertion hole or the cylindrical boss of either the synthetic resin product to be mounted and the mounted product is partitioned. When forming a member, the boss is inserted through the insertion hole, and the tip is heated and crimped while being melted for mounting. In addition, the crimping strength is secured, and there is no problem in appearance on the mounting surface.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a mounting structure according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a main part at the time of completion of mounting by the mounting structure.

FIG. 3 is an exploded perspective view showing a mounting structure according to a second embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view at the end of mounting by the mounting structure.

FIG. 5 is an exploded perspective view of a mounting structure showing a modification of the first embodiment.

FIG. 6 is a vertical cross-sectional view at the end of mounting according to the modification.

FIG. 7 is an exploded perspective view showing a mounting structure according to a third embodiment of the present invention.

FIG. 8 is a vertical cross-sectional view at the end of mounting by the mounting structure.

FIG. 9 is a vertical cross-sectional view of the conventional mounting structure at the end of mounting.

[Explanation of symbols]

 1,10,110,210 Synthetic resin products 1a, 11,111,211 Boss 11a, 111a Notch 211a Partition member 2,20,120,220 Attached product 2a, 21,121,221 Insertion hole 21a, 121a Partition member

Claims (1)

(57) [Scope of request for utility model registration] A cylindrical boss protruding from the surface of a synthetic resin product is inserted into an insertion hole formed in a product to be mounted, and the protruding end is melted and caulked to be attached to the product. A mounting structure for a synthetic resin product, wherein a partition member for partitioning the inside of the boss or the insertion hole is formed in one of the boss and the insertion hole.