JPH04109601U - wheel cover - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to suppress deformation due to hygroscopic expansion and thermal expansion as much as possible in the shape of the wheel cover body and its combination with a decorative metal plate, thereby eliminating the drawbacks of conventional wheel covers. [Configuration] A disc-shaped synthetic resin wheel cover body 2,
3 formed integrally with the wheel cover main body and extending substantially perpendicularly from the main body peripheral portion 2a toward the road wheel R.
In a wheel cover consisting of an engaging leg portion 1 having a length of 1 or more, and a decorative metal plate 3 attached to the wheel cover body and covering its front surface, the rigidity of the central portion 2b of the wheel cover body is A through hole is provided at the center or lower than the peripheral edge 2a.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention focuses on center caps attached to road wheels, especially center caps attached to road wheels. Regarding the front surface covered with a metal plate (IPC: B60B).

0002

[Conventional technology]

Traditionally, it has been used to protect the wheel nut part of road wheels from mud and dust. Rui is a composite whose front surface is covered with a separate aluminum metal plate for purely decorative purposes. It is known that a plastic center cap is attached to the wheel. .

0003

[Problem that the idea aims to solve]

By the way, polyamide, polyamide polymer alloy, polyphenylene oxa Synthetic resins such as aluminum have greater hygroscopic expansion and thermal expansion than metals such as aluminum. It has a sexual nature. Therefore, the aluminum metal plate causes expansion in the radial direction. The wheel cover whose tension is regulated may absorb moisture or rise in temperature, causing the problem shown in Figure 6. When viewed from the front of the wheel cover, the center is concave and the periphery is This causes a convex dish-shaped deformation. Along with this, the engaging legs also Displaces in the direction in which the diameter of the circumscribed circle at the tip of the In some cases, it was difficult to attach the wheel cover.

0004 The present invention is based on the shape of the wheel cover body and its combination with the decorative metal plate. This minimizes the deformation caused by hygroscopic expansion and thermal expansion, and eliminates the above-mentioned drawbacks of the wheel cover. The purpose is to eliminate the problem.

[0005]

[Means to solve the problem]

That is, the present invention includes a disk-shaped synthetic resin wheel cover body 2 and the wheel cover body 2. from the peripheral edge 2a of the main body toward the road wheel R. three or more engaging legs 1 extending substantially vertically, and attached to the wheel cover main body. and a decorative metal plate 3 covering the front surface of the wheel cover. , the rigidity of the central part 2b of the wheel cover body is lower than that of the peripheral part 2a, or is characterized in that a through hole is provided in the central portion. Examples shown in the drawings below The present invention will be explained in detail according to the following.

[0006]

【Example】

In the first embodiment shown in FIGS. 1 and 2, 2 is a dome having a through hole 2b in the center. The wheel cover body is integrally molded from nut-shaped polyamide resin. The wall thickness of the peripheral edge 2a of the cover body is thicker than the general wall thickness of conventional products to increase rigidity. and from the back side, six engaging legs 1 arranged at equal intervals are made of aluminum. It extends so as to engage with the wheel R. 3 is the front surface of the wheel cover body an aluminum decorative metal plate that covers the wheel cover; attached to the body.

[0007] In the second embodiment shown in FIG. 3, 12 is also integrally molded from polyamide resin. The wall thickness of the peripheral edge 12a of the wheel cover body is the same as that of the conventional wheel cover body. It is thicker than the general thickness of the product and has increased rigidity, and from the back side there are 6 etc. Engagement legs 10 arranged at intervals extend to engage with the aluminum wheel R. . Reference numeral 12b denotes a thin, weak part provided at the center of the wheel cover main body, and the engagement leg The rigidity is extremely low compared to the peripheral edge portion where the portion is provided. 13 is the said Hui It is also a decorative metal plate made of aluminum that covers the front surface of the cover body.

[0008] In the third embodiment shown in FIG. 4, 12 is also integrally molded from polyamide resin. In the wheel cover main body, the peripheral edge 12a of the wheel cover main body is formed by ribs. The rigidity is increased, and from the back side there are 6 engaging legs arranged at equal intervals. 10 extends so as to engage with the aluminum wheel R. In this example as well, The central part 2b of the wheel cover main body is larger than the peripheral part where the engaging legs are provided. Rigidity is extremely low. 13 covers the front surface of the wheel cover body. It is also a decorative metal plate made of aluminum.

[0009] In the fourth embodiment shown in FIG. 5, 22 is also integrally molded from polyamide resin. In the wheel cover main body, the peripheral edge 22a of the wheel cover main body has a thick wall thickness. The rigidity is increased by this, and from the back side, 6 pieces are arranged at equal intervals. The engaged leg portion 20 extends so as to engage with the aluminum wheel R. 22c is A plurality of arcuate long holes are provided at the boundary between the central part and the peripheral part of the wheel cover main body. The stiffness of the thin part is extremely low compared to other parts. It has become. 23 is an aluminum plate that covers the front surface of the wheel cover body. It is a decorative metal plate made by Umu.

0010

[Effect]

In the first embodiment described above, the central part is a through hole, and the empty part is filled with a hole. No distortion occurs, and in the second to fourth embodiments, the deformation is larger than that at the periphery. Due to the difference in stiffness, the effect of distortion in the central part is not substantially transmitted to the peripheral part. , deformation in the axle direction due to moisture absorption or temperature changes at the periphery of the wheel cover body is not practical. This is negligible.

[0011]

[Effect of the idea]

Since the present invention is configured as described above, the shape and shape of the wheel cover body In combination with the decorative metal plate, deformation due to hygroscopic expansion and thermal expansion should be minimized. Therefore, the disadvantages of the wheel cover in the conventional example can be solved.

[Brief explanation of drawings]

FIG. 1 is a rear view of a first embodiment of a wheel cover according to the present invention.

FIG. 2 is a cross-sectional view taken along line AA in FIG. 1;

FIG. 3 is a sectional view of a second embodiment corresponding to FIG. 2;

FIG. 4 is a sectional view of a third embodiment corresponding to FIG. 2;

FIG. 5 is a sectional view of a fourth embodiment corresponding to FIG. 2;

FIG. 6 is a side sectional view of a conventional example in which deformation is exaggerated.

[Explanation of symbols]

2 Wheel cover body 2a Periphery 2b Central part 3 Decorative metal plate

Claims (1)

[Scope of utility model registration request] [Claim 1] Disc-shaped synthetic resin wheel cover body 2
, three or more engaging legs 1 that are integrally molded with the wheel cover body and extend substantially perpendicularly from the body periphery 2a toward the road wheel R; In a wheel cover consisting of a decorative metal plate 3 covering the front surface, the rigidity of the central portion 2b of the wheel cover body is lower than that of the peripheral portion 2a, or a through hole is provided in the central portion. A wheel cover featuring