JPS581044Y2 - Automotive wheel center cap - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a center cap for an automobile wheel.

In recent years, as automobile wheels have become fashionable, for example, there has been a trend toward installing light alloy wheels or going capless, and center caps are increasingly being used on wheel discs.

As shown in FIG. 1, the conventional center cap is elastically deformable and has a slot 5 extending in the direction of the center line of the fitting part 4.
The elastic piece 4a is divided into a plurality of elastic pieces 4a, and each elastic piece is appropriately provided with a crimp protrusion 7 that engages with the wall surface of the hole or a locking protrusion 8 that engages with the shoulder of the hole. However, in order to prevent the center cap shown in Figure 1 from coming off, it is essential to alternately provide crimping protrusions and latching protrusions on the elastic piece, but even so, the engagement force may decrease due to wear of the crimping protrusions, etc. Therefore, the cap 1 may fall off while driving.

In addition, the center cap 1 can be made of metal or synthetic resin, but if it is made of thermoplastic synthetic resin, it may be difficult to fit due to an increase in the temperature of the wheel disc and cap due to excessive use of flakes. There is a problem that the portion 4 is likely to undergo plastic deformation and fall off from the wheel disc.

The present invention has been devised to eliminate these drawbacks.

In the present invention, the fitting part of the center cap is divided into a plurality of elastic pieces by a groove extending in an annular projection 1 at an angle of 100 to 45 degrees with respect to the center line direction, and each of these quadrilateral elastic pieces is divided into a plurality of elastic pieces. The crimping protrusion that engages with the wall surface of the hole and the latching protrusion that engages with the shoulder of the hole are formed as continuous protrusions with steps diagonally on the elastic piece, either regularly or irregularly. The crimping protrusion increases the engagement force between the center cap and the fitting part, while the latching protrusion prevents the center cap from coming off the hole, thereby solving the above problem. This will solve the problem.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

A long time ago, as shown in FIG. 3, a fitting part 4 having an outer diameter somewhat smaller than the hole diameter of the hub hole 3 and having an inner shape that gradually expands toward the tip was inserted into the center of the center cap 1. The elastic pieces 4a are divided into a plurality of elastic pieces 4a by a slot 5 that extends to the annular projection 9 at an angle of 100 to 45 degrees with respect to the linear direction.

Set the slot 5 at 100° to the direction of the center line of the center cap.
The reason for setting the angle to 45° is to prevent separation toward the center line, and if the angle is set to 45° or more, the elastic piece near the annular protrusion will be cut due to wear during running.

Further, if the angle is less than 10 degrees, the center cap tends to come off in the direction of the center line.

Next, on the outside of each of these quadrilateral elastic pieces 4a, a continuous protrusion 8 having diagonal steps is made so that the latching protrusion portion 8a is higher than the crimping protrusion portion 7a, and in this example, a “-
・Setting it in the shape of “”.

The continuous protrusion may be provided in one direction as shown in FIG.

The reason why the continuous protrusions are provided here is to prevent a decrease in the engagement force due to wear and a plastic change due to a rise in temperature.

Further, by increasing the height of the crimp projection portions 7a for each adjacent elastic piece, it is possible to prevent the center cap from coming off early due to uneven wear.

On the other hand, the shape of the crimp projection is preferably semi-cylindrical or semi-elliptical.

On the other hand, the shape of the locking protrusion 8a, which is provided at the tip of the continuous protrusion (locking protrusion) as a protrusion higher than the crimp protrusion, may be the same shape as the crimp protrusion (or it may be made larger and flattened). It can also be a shape.

What about each protrusion? The shape of a, 8a is similar to that of the fitting part 4.
Of course, it can be changed as appropriate depending on the strength of engagement with the hole 3.

[Brief explanation of the drawing]

FIG. 1 is a front view of a conventional center cap, and FIG. 2 is a sectional view for explaining the center cap of the present invention.
3 and 4 are front views showing the center cap of the present invention. 1...Center cap, 2...Wheel disc, 3...Hub hole, 4...
Fitting portion, 4a... Elastic piece, 5... Slot, 6... Locking protrusion (continuous protrusion), 7...
...Crimp protrusion, 7a...Crimp protrusion part, 8...
...Latching protrusion, 8a...Latching protrusion part, 9
...... Annular projection, 10 ... Body part of center cap, 11 ... - Shoulder part of hole.

Claims (1)

[Claims for Utility Model Registration] 1. A center cap for an automobile wheel in which a fitting portion is elastically engaged with a hole in a wheel disc,
The fitting part is divided into a plurality of elastic pieces by a slot extending in the annular protrusion 1 at an angle of 100 to 45 degrees with respect to the center line direction, and each of the quadrilateral elastic pieces is divided into a plurality of elastic pieces. The crimping protrusion that engages with the wall surface and the latching protrusion that engages with the shoulder of the hole are provided as continuous protrusions with steps diagonally on the elastic piece, protruding regularly or irregularly. Features center caps for automobile wheels. 2. In claim 1 of the utility model registration claim, the locking projection portion of each elastic piece that is provided as a continuous projection with diagonal steps and engages with the shoulder of the hole is...
A center cap for an automobile wheel, characterized in that the center cap protrudes higher than a crimp protrusion that engages with the wall of a hole. 3. In claim 1 or 2 of the claims for utility model registration, a locking protrusion protruding from each elastic piece as a continuous protrusion having diagonal steps is crimped to engage with the wall surface of a hole. A center cap for an automobile wheel characterized by alternately high and low protrusions on each adjacent elastic piece.