JPS607203Y2 - Automotive ornament hub - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an ornament hub for mounting a wheel drum on an automobile.

Ornamental hubs are used to decorate the end of an automobile's wheel drum that attaches to the axle.

This ornament hub has a cylindrical shape as a whole and is fixedly attached to the wheel drum, and one proposed method for this attachment is to use screws for tightening.

This method involves fixing a mounting bracket to the foil drum, and tightening and fixing the bracket and the ornament hub using screws, but this method requires a large number of components, a large number of installation steps, and a high cost as a result. There are drawbacks.

Another method of installation is to attach 4-
In addition to providing initial notches in about 6 places, an annular groove is formed,
The circumferential end of the foil drum is fitted into the annular groove by utilizing the elasticity of the material of the main body.

The problem with this method is that it is necessary to maintain the dimensional accuracy of the fitting portion, which is difficult to maintain when considering the elasticity of the material.

Furthermore, according to this method, since the dimensions of the fitting groove are shallow,
There is a risk that the ornament hub may fall off while the car is running.

Another attachment method is to extend the main body in the axial direction, provide a plurality of elongated notches in the circumferential direction, and lock the main body to the foil drum using only the elasticity of the main body material.

With this method, the reliability of locking while the car is running is questionable, and there is a risk that the ornament hub may fall off, especially if the heat generated by the foil drum is conducted to the ornament hub and the elasticity of the material decreases. .

Therefore, it is an object of the present invention to provide an ornament hub having a structure that overcomes the drawbacks of these conventional attachment methods.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, the ornament hub 10 includes a cylindrical main body 11, an upper wall 12, and a skirt portion 13 that are integrally formed.

The lower part of the main body 11 is a free end in which an opening 14 is formed and has a diameter of 1
1.

The material used for the ornament hub 10 is polyamide molding material (nylon 6, nylon 6
Polyether molding materials (Duracon, Duranex, Tenatsuku, etc.), polypropylene molding materials, polycarbonate T4 materials, ABS plastic molding materials, polymer molding materials, vinyl chloride, PBT, P
ES (polyether san sulfone), noryl, polyethylene, etc. can be used, and as the thermosetting molding material, phenol molding material, urea molding material, melamine molding material, etc. can be used.

Among these, polyamide molding materials, especially nylon 6
6 is appropriate.

The main body 11 has four engineered notches 1 in its circumferential direction.
5 are bored, and a pair of fitting claws 16 that are molded integrally with the main body 11 and have a shape that projects in an arcuate direction toward the outer circumferential direction of the main body 11 are formed facing each other in each of the notches.

Each fitting claw 16 has a maximum diameter of 1° when in the ornament hub 10 or in a free state (1°, 1□), and the diameter gradually decreases toward the bottom of the main body 11, so-called 1RJ is attached. .

The fitting pawl 16, whose one end is integrally molded and continuous with the main body 11 and whose other end is free, has a snap characteristic.

The upper surface 17 of each fitting claw 16 and the tip 18 of the skirt portion 13
The distance d between them is determined to be approximately equal to the thickness of the foil drum to be attached.

FIG. 2 shows a state in which the ornament hub 10 of FIG. 1 is being fitted onto the foil drum 19, and
By being inserted into the main body 11, each fitting claw 16 is bent inward in the radial direction of the main body 11.

Although the inner circumferential diameter 13 of the foil drum 19 is approximately equal to 1 square, the fitting claws 16 on the main body 11 are compressed radially inward due to the elasticity of the material.

When the ornament hub 10 is completely fitted to the state shown in the third figure, each fitting pawl 16 returns to its free state position by its self-restoring force.

In the state shown in the third figure, there is a relationship 1□, 13, and the tip 18 of the skirt portion 13 presses the foil drum 19 toward the upper surface portion 17 of the fitting claw 16, so that the foil drum 19 is self-contained. Retained.

Therefore, there is no risk that the ornament hub 10 will fall off the foil drum 19.

FIG. 4 shows another embodiment of the present invention, in which the main body 21 of the ornament hub 20 has four cutout portions in the circumferential direction. A pair of fitting claws 22 are formed integrally with the main body 21 and have a shape that protrudes toward the outer surface of the main body 21 and are opposed to each other.

The shape of the fitting claw 22 is semicircular in cross section.

A groove 24 having a shape compatible with the fitting pawl 22 is also formed in the inner circumferential portion of the wheel drum 23, and the fitting pawl 22 snap-fits into the groove 24 in the fitted state shown in FIG.

As described above, according to the present invention, the cylindrical main body of the ornament hub is provided with a substantially cylindrical notch in the circumferential direction, a plurality of opposing fitting claws are provided, and the snap fit of the claws allows the foil drum to be attached to the wheel drum. Since the ornament hub is configured to be fitted into the wheel drum, the precision of the dimensions of the mounting location is relaxed, and it is possible to securely lock the ornament hub to the wheel drum, thereby eliminating the risk of the ornament hub falling off while the vehicle is running.

Furthermore, the number of installation steps and components are reduced, which is effective in reducing cost and weight.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of an embodiment of the ornament hub according to the present invention in a free state, Fig. 2 is a cross-sectional view of the ornament hub shown in Fig. 1 in the middle of being attached to a wheel drum, and Fig. 3 is a cross-sectional view of the ornament hub shown in Fig. 1. 4 is a sectional view of another embodiment of the present invention in a free state, and FIG. 5 is a sectional view of the ornament hub shown in FIG. 4 in a completed state of attachment to the foil drum. FIG. 6 is a perspective view of the ornament hub shown in FIGS. 1 to 3, and FIG. 7 is a perspective view of the ornament hub shown in FIGS. 4 to 5. 10.20... Ornament hub, 11,21
...Body, 15...Notch, 16,
22... Fitting claw, 19, 23... Foil drum.

Claims (1)

[Scope of utility model registration request] An ornament hub to be attached to a wheel drum of an automobile has a cylindrical main body, and a plurality of cut arrow parts are provided in the circumferential direction of the main body, and inside each of the cut out parts, there is a molded part formed integrally with the main body. 1. An ornament hub for an automobile, characterized in that the hub has a pair of opposing fitting claws projecting toward the outer surface of the main body, and is fitted to the wheel drum by the snap action of the fitting claws.