Light alloy wheel assembly for an automobile

Land vehicles: wheels and axles – Wheel – Detachable wheel section

Patent

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Details

301 3558, 411 60, B60B 314

Patent

active

058879528

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The present invention relates to a light-alloy automobile-wheel assembly.


BACKGROUND ART

It is known that light alloy wheels are not always the first equipment of an automobile. Indeed, very often alloy wheels are mounted in replacement of the standard steel wheels. There is also a rather broad market, especially for high-performance cars, in which the original light alloy wheels are replaced with others of a more refined design.
The maker of alloy wheels must therefore provide his products to meet the dimensional requirements imposed by the various automobiles.
In addition to the two basic dimensions consisting of the diameter and width of the wheel, a measurement which must be taken into consideration with the greatest attention is the distance between the striker surface of the wheel on the hub and the median plane of the wheel. Even for the same diameter and width, wheels of different cars often differ in said distance.
To meet the various requirements, the wheel maker is thus forced to provide and keep in store a very broad range of wheels. This is particularly costly for large-diameter wheels designed for high-performance sports cars. In this case, the design refinement of the cars makes it necessary for practically each car type to have its specific wheel. In addition, each wheel has a rather high value. Finally, the quantities of such cars in existence and hence the market for their wheels are of course very limited.
There is thus the problem of providing a wheel assembly which can be used on several automobiles.
There are known (FR-A-1549438, GB-A-2080745) adapters which permit mounting the spare wheel of a motor vehicle on the hub of a trailer having couplings different from those of the automobile. These adapters comprises an intermediate disc with bores designed for fixing on the studs of the trailer hub and with studs designed for fixing of the motor vehicle wheel.
There is also known (GB-A-577095) a wheel for agricultural tractors provided in two parts, i.e. an external part made in various sizes and forms to be able to carry various tires or special rims, and an internal portion which can also be made in various sizes and forms suited for mounting on different hubs. The two parts are coupled together by means which ensure their interchangeability.
In addition, among light alloy wheels, wheels whose design resembles the single-nut wheels used in competition, i.e. wheels having a single central fixing nut in place of the normal four or five nuts, are much more appreciated due to their sporty appearance. Naturally these are not truly single-nut wheels. Indeed, their central `nut` is merely a shaped cap covering the normal fixing nuts.


BRIEF DESCRIPTION OF THE INVENTION

The problem underlying the present invention is thus to provide a wheel assembly comprising a single-nut fixing system which could be readily used on any motor vehicle. Consequently, the present invention relates to a light-alloy automobile-wheel assembly comprising a rim including: channel, flange, tapered internal surface with taper corresponding to that of the external surface of the centering pins,
Such a wheel assembly permits mounting of a truly single-nut wheel on the hub of any motor vehicle.
With such a wheel assembly the differences existing elastic materials, preferably stainless spring steel. This material has proven perfectly suited both as to its mechanical characteristics and its aging resistance.
Advantageously the rim comprises an annular groove in the wall of the central bore to give an elastic yielding to the rim under the tightening effect of the nut. This helps greatly to prevent loosening of the nut.


BRIEF DESCRIPTION OF DRAWINGS

A detailed description of an embodiment of the present invention is given below with reference to the annexed drawings wherein:
FIG. 1 shows a cross section view of a wheel assembly in accordance with the present invention, and
FIG. 2 shows an exploded cross section view of the wheel assembly of FIG. 1.
FIG. 3 is a perspective view of a bush of the w

REFERENCES:
patent: 2010553 (1935-08-01), McIntosh
patent: 2252316 (1941-08-01), Gelpcke
patent: 2321170 (1943-06-01), Wallace
patent: 2616328 (1952-11-01), Kingsmore
patent: 2746804 (1956-05-01), Bourdon
patent: 2926409 (1960-03-01), Perry
patent: 3606814 (1971-09-01), MacKenzie
patent: 4537449 (1985-08-01), Hayashi
patent: 5090778 (1992-02-01), Laudszun et al.
patent: 5211448 (1993-05-01), Hayashi
patent: 5636905 (1997-06-01), Pagacz

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