JPH0442205Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a synthetic resin product that is integrated by a core and a cover that covers the surface of the core.

(Prior Art) Examples of synthetic resin products of this type include horn pads for steering wheels and lids for storage compartments.

For example, in the horn pad body,
As described in Japanese Utility Model Application Publication No. 44055, Japanese Utility Model Application Publication No. 60-34052, or Japanese Utility Model Application Publication No. 61-9357, an annular projecting edge formed on the outer periphery of the lower end of the peripheral wall of the core material,
There is one in which an annular groove formed on the inner periphery of the side wall of a cover body made of soft synthetic resin is fitted and integrated.

However, in this case, the side walls of the cover body are forcibly expanded relative to the core material, so it is difficult to fit the cover body, and the cover body is made slightly larger to make it easier to fit. When formed, the cover body and the core material become loose, and if the softness of the cover body is increased to make it easier to fit, there is a problem that the cover body easily comes off.

In addition, in order to solve this problem, for example, as described in Japanese Utility Model Application Publication No. 60-51175, linear members are discontinuously buried in the side wall near the annular groove of the cover body. There is also a method of maintaining the fit with the core material using a wire member even when the softness is increased to make it easier to fit, but in this case, the molding of the cover body becomes complicated, the cost increases, and the wire There is a problem in that the shaped members must be discontinuous.

(Problems to be solved by the invention) With conventional synthetic resin products, when the structure is easy to mold and has a low cost, the cover body is difficult to fit, rattles, or easily comes off. There is a problem.

The present invention was developed in view of the above-mentioned points, and it is possible to easily fit the cover body onto the core body, and also prevent the occurrence of looseness between the cover body and the core body, and the ease of detachment of the cover body. The purpose of the present invention is to provide synthetic resin products that prevent this from occurring.

[Structure of the idea]

(Means for Solving Problems) The present invention consists of a core body 13 and a cover body 14 that covers the surface of this core body 13, and is provided on the side wall 28 of the cover body 14 on the peripheral wall portion 18 of the core body 13. A synthetic resin product integrated by locking the locking edge 29 can be elastically deformed inward by a slit 19 vertically formed in communication with the lower end of the peripheral wall 18 of the core body 13. An elastic engagement piece 20 is provided, and a locking edge 29 provided on a side wall 28 of the cover body 14 is elastically locked to an engagement edge 21 at the lower end of the elastic engagement piece 20.

(Function) In the present invention, when fitting the cover body 14 to the core body 13, when the side wall 28 of the cover body 14 is aligned with the peripheral wall portion 18 of the core body 13 and pushed in from above, the cover body 14
The locking edge 29 contacts the elastic engagement piece 20 of the core body 13, and the elastic engagement piece 20 is elastically deformed inward, and the locking edge 29 contacts the elastic engagement piece 20 of the lower end of the elastic engagement piece 20. When facing the engagement edge 21, the elastic engagement piece 2
0 elastically returns to the outside, the elastic engagement piece 20 elastically engages with the inner surface of the side wall 28 of the cover body 14, and the engagement edge 21 elastically engages with the locking edge 29. , therefore, the engaging edge 21 of the core 13
The locking edge 29 of the cover body 14 is elastically locked.

(Embodiment) Hereinafter, the configuration of an embodiment of the present invention will be described with reference to the drawings.

In FIG. 3, 1 is a steering wheel body, and this steering wheel body 1 includes an annular rim portion 2, spoke portions 3 installed between the inner sides of this rim portion 2, and fixed to the center of the spoke portions 3. It is composed of a boss portion 4.

As shown in FIG. 2, this boss portion 4 has a boss 7 that is fitted onto the steering shaft 5 and tightened and fixed with a nut 6. An annular mounting plate 9 is fixed by bolts 8 screwed into the mounting portion 7a,
A synthetic resin boss cover 10 that covers the lower surface of the boss 7 is attached to the lower part. A slip ring 11 having an annular shape centered at the center of the boss 7 is provided on the lower surface of the boss cover 10.

A horn pad body 12 as a synthetic resin product is provided on the upper part of the mounting plate 9, and as shown in FIG. It is comprised of a cover body 14 made of soft synthetic resin that covers the surface.

This core body 13 has boss portions 16 protruding downward from several locations on the flat plate portion 15, mounting portions 17 protruding from the lower surface, and a peripheral wall portion 18 extending downward from the peripheral edge of the flat plate portion 15. It is installed protrudingly. The peripheral wall portion 18 is provided with its lower end inclined outward, and has a plurality of elastic engagement pieces formed by a plurality of slips 19 vertically formed in the peripheral wall portion 18 so as to communicate with the lower end of the peripheral wall portion 18. 20 is provided, and the lower end of the elastic engagement piece 20 on the engagement edge 21 side is elastically deformable inward. A lid 23 is detachably attached to the center of the flat plate portion 15 of the core 13 to close an opening 22 facing the boss 7. An annular horn plate 25 is fixed by a set screw 24 screwed into the mounting portion 17.

The cover body 14 has a core body 13 on the lower surface of the flat plate part 26.
A plurality of rib portions 27 contacting the upper surface of the flat plate portion 15 of
Further, a side wall 28 whose inner surface from the peripheral edge of the flat plate portion 26 adheres to the outer surface of the peripheral wall portion 18 of the core body 13 is provided. This side wall 28 is provided at its lower end with a locking edge 29 that engages with the locking edge 21 of the elastic locking piece 20 .

This horn pad body 12 is connected to the core body 13.
The boss portion 16 is supported to be movable up and down with respect to the mounting plate 9 via a spacer 31 fixed to the mounting plate 9 with a mounting screw 30, and is supported by a compression spring 32 fitted on the outer periphery of the spacer 31. and is biased upward.

The horn plate 25 is connected to the (+) side of the battery of the automobile via a connection mechanism (not shown) between the horn plate 25 and the slip ring 11, the slip ring 11, a contact pin (not shown), and a horn. The mounting plate 9 is
It is connected to the vehicle body of the automobile via the boss 7 and the steering shaft 5, and is connected to the (-) side of the battery. Therefore, by pressing the horn pad body 12, the horn plate 25 comes into contact with the bolt 8 of the mounting plate 9, and the horn is activated.

When the steering wheel body 1 is then attached to the steering shaft 5, the cover body 14 of the horn plate body 12 is removed from the core body 13, and the lid body 23 of the core body 13 is opened to open the opening 22. So, replace boss 7 with steering shaft 5
A nut 6 is screwed into the upper end of the steering shaft 5 from the opening 22, and the nut 6 is firmly tightened using a tool. Then, the cover body 23 of the core body 13 is closed, and the cover body 14 is closed.
is fitted on the outside of the core body 13.

When fitting the cover body 14 onto the core body 13,
As shown in FIG. 4, when the side wall 28 of the cover body 14 is aligned with the peripheral wall portion 18 of the core body 13 and pushed in (state shown in FIG. 4 a), the locking edge 29 of the cover body 14 comes into contact with the side wall 28 of the cover body 14. By sliding, the elastic engagement piece 20 of the core body 13 is elastically deformed inward (the state shown in FIG. 4b),
Then, when the locking edge 29 faces the engagement edge 21, the elastic engagement piece 20 returns outward due to its elastic force, and the outer surface of the elastic engagement piece 20 touches the side wall 21.
The engaging edge 21
is elastically engaged with the locking edge 29 (state shown in FIG. 4c).

Therefore, when the cover body 14 is fitted, the elastic engagement piece 2
Since the cover body 14 is elastically deformed, it is easy to attach it to the core body 13, and since the cover body 14 is elastically held by the elastic engagement piece 20, it does not rattle and is difficult to come off. .

The core body 13 may be made of synthetic resin or metal as shown in the above embodiment, and the cover body 14 may be made of a soft synthetic material with a textured outer surface, for example, to give a soft and luxurious feel. It is better to use resin.

Furthermore, since the cover body 14 is made of soft synthetic resin, the side wall 28 expands slightly outward when the cover body 14 is fitted onto the core body 13.
In consideration of the possibility of the side wall 28 coming off, it is desirable that the side wall 28 be made thick enough to prevent it from expanding too much. In this case, since the elastic engagement piece 20 is elastically deformed, there is no problem in fitting the cover body 14.

Further, as the material of the cover body 14, a semi-hard synthetic resin may be used instead of the soft synthetic resin. In this case, since the side wall 28 of the cover body 14 expands only slightly, the cover body 14 core bodies 13
Although the fitting between the cover body and the cover body becomes strong, there is no problem in fitting the cover body as described above.

Further, in the above embodiment, the elastic engagement piece 20 was constituted by the peripheral wall portion 18 of the core body 13, but the peripheral wall portion 1
The elastic engagement piece 20 formed separately from the core body 13
may be provided.

Further, in the above embodiment, the horn pad body 12 was explained as a synthetic resin product, but a synthetic resin product such as a lid for a storage case may be used.

[Effect of idea]

According to the present invention, an elastic engagement piece that can be elastically deformed inward by a vertically formed slit communicating with the lower end of the peripheral wall of the core is provided, and the engagement edge at the lower end of the elastic engagement piece is provided. Since the locking edge provided on the side wall of the cover body is elastically locked, when the cover body is fitted onto the core body, the insertion force of the cover body against the core body is reduced, and the fitting is made easier. The work can be made easier, and the elastic engagement piece of the core body elastically engages with the inner surface of the side wall of the cover body, preventing the occurrence of backlash in the cover body and making it possible to easily remove the cover body. It can prevent it from coming off.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a horn pad body showing an embodiment of the synthetic resin product of the present invention, Fig. 2 is a cross-sectional view taken from - of Fig. 3, Fig. 3 is a plan view thereof, and Fig. 4 is an exploded perspective view of the horn pad body showing an embodiment of the synthetic resin product of the present invention. It is an explanatory view showing a state where a body is fitted. 13... core body, 14... cover body, 18... peripheral wall part, 19... slit, 20... elastic engagement piece,
21... Engaging edge, 28... Side wall, 29... Locking edge.

Claims (1)

[Claim for Utility Model Registration] Consisting of a core body and a cover body that covers the surface of this core body, by locking a locking edge provided on a side wall of the cover body to the peripheral wall of the core body. In the integrated synthetic resin product, an elastic engagement piece that can be elastically deformed inward by a vertical slit communicating with the lower end of the peripheral wall of the core body is provided, and the engagement of the lower end of the elastic engagement piece is provided. A synthetic resin product characterized in that a locking edge provided on the side wall of the cover body is elastically locked to the mating edge.