JP2000280701A - Wheel for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a sense of incompatibility of an appearance reduce the number of part items, and reduce weight without using a blind cover by forming a plurality of the same kinds of elliptic shapes including different kinds of pitches, and alternately arranging bolt holes having different pitches in formed respective shapes. SOLUTION: A plurality of the same elliptic recessed shapes including holes having different kinds of pitches are molded on a wheel surface by a casting mold roe forging. Molding of bolt holes having different kinds of pitches by cutting work is combined with the molded respective elliptic recessed shapes. An elliptic shape of this casting or forging molding is effective in a minimum shape for including two kinds of pitches to prevent the elliptic shape from overlapping with an adjacent hole. Thus, since a fluid cover is not required, a cover and the number of installing part items can be reduced, so that weight can be reduced and a cost can also be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of connecting two different pitches (e.g., 114.3 mm and 100 mm) of mounting bolts for an automobile wheel without using a blind cover or the like. It is an object of the present invention to make it possible to make different types of vehicles compatible with each other, to reduce production and distribution costs, and to reduce the weight.

[0002]

2. Description of the Related Art In a wheel for an automobile, pitch holes of two types of fastening bolts are often arranged on the same product. However, since the positions of the bolts do not come on the same circle, they are disjointed. The impression cannot be wiped off, and the product was conventionally commercialized with a blind lid attached and hidden.

[0003]

The conventional arrangement of two types of holes, which are different from each other, either by making a product separately for each type of hole pitch or by making two types of holes in one product. In order to hide the product, the method of commercializing with a blind lid is
There are problems in that the number of products and the number of parts are increased, the production and distribution costs are extra, and the weight of the wheel is increased due to the increased number of parts.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a method for forming a plurality of elliptical shapes of the same type having two pitches on the same product without using a blind lid, and forming each of the formed elliptical shapes. By alternately arranging the holes of different pitches, it is possible to produce a product with the same arrangement of holes on the surface without discomfort in appearance and lightening the weight. This is available for both 5-hole and 4-hole wheels.

BEST MODE FOR CARRYING OUT THE INVENTION

[0005] The present invention provides a mold for molding an identical elliptical concave shape having holes of different types on an automobile wheel surface,
Alternatively, a combination of forming a plurality of holes by forging and forming bolt holes having different pitches by cutting or the like in each of the formed oval concave shapes is combined.

The above-mentioned oval shape of the casting or forging is effective if it has a minimum shape for covering two kinds of pitches so as not to cover adjacent holes.

[0007]

Embodiments will be described with reference to the drawings.
In FIGS. 3 and 4, a plurality of identical concave shapes having holes of different kinds of pitches are formed on the wheel surface by casting or forging. Then, as shown in FIGS. 5 and 6, holes of two kinds of pitches are machined by cutting or the like so as to be alternately arranged in respective concave shapes.

[0008]

The present invention is embodied in the form described above and has the following effects.

The same product can have two types of pitch holes without blindness and without discomfort.
Since it can meet the standards of two automobiles, the burden on production and distribution can be greatly improved.

[0010] While having holes of two kinds of pitches, the holes have the same shape in appearance, and a product is realized without a sense of incongruity.

Since there is no need for a blind cover, the number of parts for mounting the cover and the cover is reduced, so that the weight is reduced.
Costs are also reduced.

Since the unique shape without the blind lid can be appealed, it can be differentiated from other products, and the functional shape can be clearly expressed.

This product can be used as it is even when the user switches to a car of a different standard.

Since there is no lid, mounting and dismounting of the wheel are easy.

Since there is no lid, the part falls off,
There is no worry about breaking.

[Brief description of the drawings]

FIG. 1 is a front view showing a shape on a surface. The solid line is the part directly related to the invention.

FIG. 2 is a rear view. The solid line is the part directly related to the invention.

FIG. 3 is an enlarged cross-sectional view showing a processing state of the same elliptical concave shape on the surface.

FIG. 4 is an enlarged front view showing a processing state of the same elliptical concave shape on the surface.

FIG. 5 is an enlarged cross-sectional view in which holes of two kinds of pitches are processed in the processing of FIGS.

FIG. 6 is an enlarged front view in which holes of two kinds of pitches are processed in the processing of FIGS.

[Explanation of symbols]

 1P. C. Dφ100 2 P. C. Dφ114.3

Claims (3)

[Claims] An automotive wheel having holes for passing a plurality of bolts for different types of pitches,
The plurality of bolt holes are alternately arranged with bolt holes having different pitches, and the bolt holes have the same shape on the surface of the wheel regardless of the type of pitch. 2. A vehicle wheel in which bolt holes of different pitches are alternately arranged in a plurality of the same elliptical recessed shapes having bolt holes of different pitches formed on the surface of the vehicle wheel. 3. A plurality of identical concave shapes having holes of different types are formed in a mold or forging on the surface of an automobile wheel, and bolts having different types of pitches are formed in the respective concave shapes. A method for manufacturing an automobile wheel in which holes are formed by cutting.