JPH0663402U - Wheel cover with preload mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a wheel cover having a preload mechanism. [Structure] One piece of U-shaped leaf spring is elastically biased to the other piece between the inner and outer locking ribs that are integrally formed at several locations around the back surface of the synthetic resin wheel cover body. The inner locking rib is brought into contact with the inner piece of the disc wheel facing the hump part of the disc wheel, and the outer locking rib is locked to the hump part. Wheel cover with a characteristic preload mechanism.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automobile wheel cover, and particularly to a mounting mechanism thereof.

[0002]

[Prior art]

 Conventionally, as a technique of this kind, when locking a wheel cover to an automobile disc wheel, an annular body made of a wire is attached from the inside to a locking rib provided around the back surface of the wheel cover body, and this locking is performed. The ribs are elastically extended to the outside, the locking ribs are elastically extended to the outside, and a part of the annular body is curved to give a preload (bias pressure). On the other hand, by inserting a U-shaped leaf spring or the like between the outer locking rib and the inner locking rib and adjusting the spring pressure, the wheel cover is held by the disc wheel. A device has been proposed by the applicant (Japanese Utility Model Application No. 60-66209).

[0003]

[Problems to be solved by the device]

 Occurrence of defective locking at an early stage due to deterioration of the material of the inner and outer locking ribs (synthetic resin material), deterioration of spring pressure of the annular body and leaf spring by the wire, and difficulty in obtaining appropriate spring pressure adjustment. However, due to the high manufacturing cost of these spring materials, a good measure to lock and remove the wheel cover on the wheel disc at a constant pressure is a challenge that needs to be resolved. It was pointed out.

[0004]

[Means for Solving the Problems]

 This invention employs a structure in which a constant preload is always applied between the outer locking ribs of the synthetic resin wheel cover. That is, one piece of a U-shaped leaf spring is locked between the inner and outer locking ribs integrally formed around the rear surface of the wheel cover body made of synthetic resin so as to bias the other piece. A wheel cover having a preload mechanism characterized in that a preload for biasing the wheel disc is inserted by inserting a spring.

[0005]

[Action]

 Inner and outer locking ribs are integrally molded around the back surface of the wheel cover, and one of the U-shaped leaf springs is locked between these inner and outer locking arms so as to urge the other to elastically. A preload is applied between the inner and outer locking ribs by inserting the inserted springs, and when mounting this wheel cover on the wheel disc, when inserting these locking ribs on the hump part of the wheel disc, The inner and outer locking ribs are pressed into the hump part of the wheel cover and inserted elastically by reducing the gap between them, and after insertion, the spring expands and preloads between the inner and outer locking ribs. The hump part is held by the same operation as described above when it is pulled out, and a constant preload state is restored.

[0006]

【Example】

 As shown in FIG. 1, the inner locking rib (1) and the outer locking ribs (2), (2 ') are integrally formed around the back surface of the synthetic resin wheel cover (H) at several places. A spring (4) for applying a preload shown in FIGS. 2 (a) and 2 (b) is inserted between the inner and outer locking ribs (1), (2), (2 '). It forms a protruding piece (f) from the open end and the central part of one piece (e) of U-shaped leaf spring, bends this and engages with the other piece (g), and both of these protruding pieces (f ), An elastic force is applied between the other pieces (g), and this spring is inserted between the outer retaining ribs (1), (2), (2 ') shown in FIG. By the preload of (4), the preload state can be maintained between the inner and outer locking ribs (1), (2), (2 ') [Fig. 2 (b), Fig. 3]. reference].

That is, by inserting this spring (4) between the inner and outer locking ribs (1), (2), (2 '), the spring (4) always keeps a certain opening degree. However, when it receives a force from the outside, its elasticity reduces its width toward the inside, and when the force from the outside disappears, it returns to the aforementioned constant width. In this way, a constant width is always maintained, and the width is reduced and expanded according to the external force.Therefore, this is inserted between the inner and outer locking ribs (1), (2), (2 '). This ensures that when the wheel cover (H) is pushed into the hump (d) of the disc wheel (D) [see Fig. 3], the outer locking ribs (2) are pushed inward and the spring It is inserted against the spring pressure of (4), then spreads into the hump (d) and is completely locked to the wheel disc (D). Then, at the time of detaching from the outside, the outer locking rib enters inward against the spring pressure of the spring (4) and disengages from the hump (d). Between 2 '), the preload of this spring (4) is activated again.

[0008]

[Effect of device]

 In this invention, there is always a certain amount of preload between the inner and outer locking ribs, which are integrally molded around the back surface of the wheel cover body made of synthetic resin, so that at the locking location on the wheel disc side. Even if there is a variation in dimensions, it can be absorbed to the maximum during insertion or removal, and on the other hand, even if a spring with a small number of spring constants is used, the preload works It is possible to obtain a large locking force. When such a preload is not applied, the locking rib integrally formed of the synthetic resin material is always subjected to a pressing force, which deteriorates them at an early stage. This is to eliminate such a fear. Further, since the spring member made of an annular body, which is used in the conventional wheel cover of this type, is not required, there is a great advantage that the cost is reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing inner and outer locking ribs of a wheel cover having a preload mechanism according to the present invention.

FIG. 2 is a perspective view of a spring used in a wheel cover having a preload mechanism according to the present invention, a longitudinal sectional view, and a view showing a state in which the spring is attached to inner and outer locking ribs.

FIG. 3 is a reduced vertical cross-sectional view of a state in which a wheel cover having a preload mechanism of the present invention is attached to a wheel disc.

[Explanation of symbols]

 (H) Wheel cover (1) Inner locking rib (2) Outer locking rib (2 ') Outer locking rib (4) Spring (D) Wheel disc (d) Hump (f) Projecting piece (g) Other Piece

Claims (1)

[Scope of utility model registration request] 1. One piece of a U-shaped leaf spring and elastic force to the other piece are provided between inner and outer locking ribs integrally formed at several places around the back surface of a synthetic resin wheel cover body. A spring that was locked so as to urge it was inserted, and the inner locking rib was brought into contact with the inner piece of the disc wheel facing the hump portion of the disc wheel, and the outer locking rib was locked to the hump portion. A wheel cover having a preload mechanism characterized by the above.