JPH02293201A - Wheel cover installing device - Google Patents

Abstract

PURPOSE:To improve the durability and reliability without effects of contamination by dust by providing a supporting body to stand in a wheel cover facing wheel threading nuts, engaging extended ear parts protruded from a star-like circular spring body with the supporting body, and holding the nuts by the extended ear parts. CONSTITUTION:A supporting plate 2 is provided standing in a wheel cover disc 1 and facing a nut 4 to be capable of oscillation by a hinge 21. In the meanwhile, a extended ears 32 are formed in a corresponding number to nuts 4 at a circular spring body 3 to be like a star, and the nut 4 is formed to hold it at a holding angle alpha while it is applied to an outline 40 of the nut 4 at an angle of beta. In this constitution, the extended ear 32 of the spring body 3 is fixed at a hole 22 of the supporting plate 2, and the nut 4 is held at an angular part. In this constitution, bad effects of contamination by dust can be eliminated, and the durability and reliability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wheel cover mounting device, and more particularly to a wheel cover mounting device that is mounted on a wheel nut.

[Conventional technology] As a conventional wheel cover mounting device, we have
No. 3-287601 was disclosed. The key point of its technical philosophy is that when it is fitted into a nut, it uses a spring body that has double elasticity, including angle opening/closing elasticity and ring opening/closing elasticity. I liked it because it was easy to install. In this regard, subsequent research confirmed its excellent performance, but since the spring body was supported by a sliding part, it became clear that there was a problem with the sliding part.

[Problems to be Solved by the Invention] The first problem in the conventional example is that the smoothness of the slide is deteriorated due to dust contamination.

This restricts the above-mentioned ring opening/closing action, which particularly impairs the operational feel of mounting and dismounting. Second, sliding parts require appropriate gaps, but plastic molding makes it difficult to achieve minute tolerances and difficult to maintain over a long period of time. In addition, as the gap widens due to dents and wear, there are problems such as noise generation due to vibration, local acceleration caused by street rock, which further enlarges the dents, and ultimately leads to a decline in installation performance. Ta.

[Means for Solving the Problems] This invention was made by focusing on such conventional problems, and instead of using a plastic hinge, the sliding part is eliminated and the sliding part is fixedly fitted. Applying the elasticity of
Furthermore, it is an object of the present invention to solve the above-mentioned problems by utilizing the locking force with the wheel nut.

[Example] The present invention will be explained below based on the drawings.

FIGS. 1 to 3 are diagrams showing one embodiment of the present invention.

First, the configuration and structure thereof will be explained. A support plate 2 is installed on a wheel cover board 1, and a spring body 3 is firmly fitted therein. The wheel nut 4 is used to tighten the disc wheel 5 to the hub in Kigoro, but in this case it is also used to attach the wheel cover. In addition, wheel balancer 6, air valve 7
The adjustment hole 8 is bored in the wheel cover board 1.

The spring body 3 is constructed by closing a spring wire 30 formed into a substantially star shape as shown in FIG. 2, and joining the ring with a tube 31 by caulking or projection welding. The star shape has an included angle α that abuts and holds the outer line 40 of the nut 4 at angles β and β, and protruding ears 32 that assist in opening and closing the included angle α, in a number that matches the number of nuts 4, It has a shape in which these are connected and closed.

The support plate 2 is disposed facing the nut 4 and has a hinge 21
It has a hole 22 which is erected from the above-mentioned 1 through the hole 22 and into which the above-mentioned 32 is firmly fitted. A circumferential hole 23 and a circumferential groove 24 can be added to the hole 22 to increase the secure fit and cushioning properties.

An example is shown in which a diagonally protruding die 9 is used as a die for forming these 21, 22, 23, and 24.

The hinge 21 has an annular rib 11 as shown in 21'.
It can also be provided above via R12. The significance of this is that by continuously constructing the hinge 21' from the annular rib 11 that reinforces the board surface rigidity, the stiffness in the longitudinal direction of the hinge is increased without changing the hinge bendability, and in addition, the stiffness in the longitudinal direction of the hinge is increased. This avoids matching stress and hinge bending stress.

In addition, when the number of nuts of a disk wheel is large, it is possible to selectively target a small number of nuts as appropriate. For example, it may be attached to 4 out of 8 in total, or 3 out of 5 in total. This may affect the overall shape of the spring body 3 and thus its double elasticity.

Next, the effect will be explained. The support plates 2 can be swung in radial directions through hinges 21. However, the stiffness is large in the longitudinal direction of the hinge, making it difficult to collapse.

The spring body 3 moves its protruding ear 32 into the hole 2 using the above-mentioned swinging motion.
2 and attach it firmly. The presence of the overhanging lugs 32 facilitates the opening and closing of the included angle α of the spring body 3, thereby allowing the spring body 3 to move over the nut 4.

Also, when riding over the nut, the spring body 3 rings around the ear 32 while expanding its diameter.
The diameter of the support plate 2, which is tightly fitted to the support plate 2, also expands in diameter by swinging.

In actuality, when installing the wheel cover, when the air valve 7 and the adjustment hole 8 are aligned, the wheel nut 4 will fit the outer line 40.
Since it will come close to , if you push it in as it is, it will go over all the nuts at the same time, and the spring wire 3o will be fitted to the lower end of the nut taper, completing the installation. Note that removal only results in a reverse operation. The spring body 3 fitted to the nut has a strong mounting action due to the opening and closing ring elasticity as well as the wedge effect caused by the opening and closing of the included angle α which presses against the angles β and β. The relative positional movement between the spring body 3 and the plate 1 is effectively limited by the hinge stiffness of the pair of support plates that are oriented at 90 degrees to each other. FIG. 3 shows another embodiment of the present invention, which shows means for improving the tight fit of the hole 22 and other means for the hinge 21. When the peripheral hole 23 is provided near the hole 22, the cushioning properties of the hole 22 are increased, so that the dimensional tolerance of the hole 22 can be absorbed. In addition to the above, when the circumferential groove 24 is provided, even when the swinging angle of the wide support plate is large (when the height of the support plate is low), the diaphragm action prevents strain on the spring body support. At the same time, it becomes a third spring property (see below) and absorbs minute vibrations. Due to the wheel cover board design, an annular rib 11 can be provided when rigidity is required.
Continuing from this, a hinge 21' can also be provided via R12. In general, it is preferable to stand the thin section 21 from the wide board surface 1 because sink marks are less likely to occur on the board surface, but since a large stress during forming remains in the part where the cross section suddenly changes, this part is used as a hinge. Applying a large bending stress is not a preferable method from the viewpoint of strength. When the strength of the plastic material is low, it is better to separate forming stress and bending stress into separate parts, so 21° is a means to meet this demand.

[Effects of the Invention] As described above, according to the present invention, the configuration of the spring body 3 is improved so that the spring body 3 has dual elasticity of expansion/contraction diameter elasticity and included angle elasticity, and also has mounting properties that have a wedge effect. However, since the spring body support does not have a sliding part and is firmly fitted and is supported by elastic plastic material instead, it is unaffected by scum stains and is durable without wobbling. High performance and reliability.
The mounting performance can withstand vibrations in a wide frequency range and shocks, and its performance is maintained for many years. Moreover, the design of the wheel cover board is free, it is not affected by warping or creeping of the board surface, it can be applied to any plastic material, and it has the advantage of being simple and low cost.

Furthermore, since a third plastic elasticity is added in addition to the above-mentioned double elasticity, the mounting performance is further improved, and since the mold is the same, there is also the effect that there is no economical burden.

[Brief explanation of drawings]

FIG. 1 is a full sectional view of the wheel cover mounting device of the present invention, FIG. 2 is a plan view of the mounting portion thereof, and FIG. 3 is a side view of the same. The left hand side shows an applied example in which an annular rib is supplemented. 1... Oil cover board 2... Support plate 3... Spring body 4... Wheel nut 5... Disc wheel 6... Wheel balancer 7... Air valve 8... Air adjustment hole 9... Oblique protrusion type and 4 other procedural amendments flat T-It. /Year t month 23rd

Claims (1)

[Claims] 1. The number of support plates (2) facing the nuts (4) that screw the wheel (5) onto the axle is the same as the number of nuts (4), and the wheel cover board (1) that covers the wheel (5) is provided. ),
An annular spring body (3) provided with the same number or a selected number of outwardly projecting projecting ears (32) as the nut (4) is attached to the supporting body (2). ) is assembled to the wheel cover board (1) by fitting the tip of the nut (4
) by sandwiching the wheel cover board (1)
A wheel cover mounting device, characterized in that the wheel cover is mounted on the wheel (5). 2. The wheel cover mounting device according to claim 1, wherein the support plate (2) is movable relative to the wheel cover board (1).