JP2001010301A - Automobile wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automobile wheel to be a wheel for satisfying a spoke shape when it is seen from above, reduce the occurrence of a problem on a strength and rigidity, improve design properties and easily generate, for example, a thickness feeling. SOLUTION: This wheel comprises a rim 10; and a double disc. The doubled disc comprises a disc 20 on the back side having a spoke part 25 and joined at a tip with the rim 10; a disc 30 on the surface side arranged on the surface side in the axial direction of a wheel from the disc 20 on the back side and a portion between a window part 32 and a shaft formed in a spoke shape and having the edge of a window part 32 bent in the direction of thickness; and a coupling member 40 to intercouple the spoke part 25 of the disc 20 on the back side and the disc 30 on the surface side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle wheel.

[0002]

2. Description of the Related Art Conventionally, a manufactured steel wheel generally comprises a single disk assembled by press-fitting (fitting) a disk into a drop portion or a bead seat portion of a rim and then welding.

[0003]

The conventional steel wheels for automobiles have the following problems. When a spoke-shaped disk is obtained with a single disk, the window portion must be enlarged to form a pseudo-spoke portion, resulting in insufficient strength and rigidity. It is difficult to give a sense of thickness at the edge of the window, and the design is not good. There is a problem. An object of the present invention is a wheel that satisfies a spoke shape when viewed from the front, and has reduced strength and rigidity problems, and can improve design, for example, an automobile wheel that can easily have a sense of thickness. Is to provide.

[0004]

The present invention for achieving the above object is as follows. A rim and a double disk, wherein the double disk has a spoke portion, and a rear disk joined to the rim at a tip end; and a rear disk disposed on the outer side in the wheel axial direction from the rear disk. The front disk has a spoke shape between the windows and the edge of the window is bent in the thickness direction of the disk, and a connecting member that connects the spokes of the rear disk and the front disks. Car wheels.

In the above-mentioned automobile wheel, the thickness and shape of the back disk can be freely selected without being substantially restricted by design, so that the strength and rigidity of the back disk can be improved, and the strength and rigidity of the double disk can be improved. Can be improved. Also,
Since the front disk is not joined to the rim, the design and structure of the design can be selected without being substantially affected by the load from the rim. Thereby, the spoke shape can be easily obtained. In addition, the structure and shape of the front disk can be selected from the design, so that it can be formed with a thin plate.
The edge of the window can be bent, and the thickness of the window (spoke) can be increased in appearance.

[0006]

1 to 4 show a vehicle wheel according to a first embodiment of the present invention, and FIGS. 5 and 6 show a second embodiment of the present invention.
FIGS. 7 and 8 show a vehicle wheel according to a third embodiment of the present invention, and FIGS.
Shows an automobile wheel according to a fourth embodiment of the present invention. Parts common to the first to fourth embodiments of the present invention include the first embodiment of the present invention.
The same reference numerals are given to the fourth to fourth embodiments. First,
Portions common to the first to fourth embodiments of the present invention will be described with reference to, for example, FIGS. 1 to 4, 9, and 11. The vehicle wheel according to the embodiment of the present invention is made of steel and has a rim 10
Back disc 20 having spoke portions 21 separated in the circumferential direction, front disc 30, back disc 20
And a connecting member 40 for connecting the side disks 30.

As shown in FIG. 1, the rim 10 is provided with a drop portion 11 at the center in the axial direction.
Sidewall portions 12a and 12b are formed continuously at both ends of 1. Bead seat portions 13a and 13b extend outward from the respective outer peripheral ends of the sidewall portions 12a and 12b in the rim axial direction. Bead sheet part 1
The rim flanges 14a and 14b are connected to the outer ends of the rims 3a in the axial direction of the rim.

[0008] The rear disk 20 is located at the center in the radial direction.
A hub hole 21 is provided, and a hub mounting portion 22 is formed around the hub hole 21. The hub mounting portion 22 is provided with bolt holes 23 at equal intervals in the circumferential direction.
By inserting a hub bolt (not shown) extending from a hub (not shown) into the bolt hole 23 and screwing a hub nut (not shown) into the hub bolt, the wheel is fixed to the hub of the axle at the rear disc 20 site.

A hat portion 24 is formed on the outer peripheral portion of the hub mounting portion 22 of the rear disk 20 so as to be convex toward the front side, which is the outer side in the wheel axial direction. A spoke 25 is formed on the rear disk 20 from the outer peripheral portion of the hat portion 24 to the outer peripheral end of the rear disk 20. In the spoke portion 25, an engagement receiving portion 26 which is a joining place with the connecting member 40 is formed continuously or intermittently in the circumferential direction. The engagement receiving portion 26 is, as shown in FIGS.
It may have a hole shape penetrating the back disk 20, or may have a groove shape formed on the front surface of the back disk 20 without penetrating the back disk 20.

The rear disk 20 is inserted or press-fitted into the bead seat portion 13a or the drop portion 11 of the rim 10 at the outer peripheral end of the spoke portion 25.
a, or the side wall portion 12a, or the drop portion 11 is joined to the rim 10 by fillet welding by, for example, MAG welding (usually carbon dioxide gas arc welding).

The front disk 30 is not attached to the rim 10 as shown in FIGS.
And is non-removably attached to the back side disk 20 via. The outer peripheral end of the front disk 30 is
0 extends radially outward from the outer peripheral end. The front disk 30 has a smaller thickness than the rear disk 20, and is disposed closer to the wheel than the rear disk 20 without contacting the rear disk 20.

A hole 31 is provided at a portion corresponding to the hub hole 21 and the hub mounting portion of the rear disk 20 at the radially central portion (inner peripheral side) of the front disk 30.
The hole 31 is formed in the bolt hole 2 formed in the back disk 20.
3 (see FIG. 2). At the outer periphery of the hole 31,
A window portion 32 is formed in a portion corresponding to a portion between the spoke portions 25. The portion corresponding to the portion between the windows 32 has a spoke shape in appearance. The portion of the front disk 30 which becomes the edge of the window portion 32 is desirably bent to the rear side by about 90 ° to give a sense of thickness.

As shown in FIG. 1 and FIG. 9, the connecting member 40 connects the back side disk 20 and the side side disk 30. The connecting member 40 has a stepped round bar shape or an annular shape continuous in the circumferential direction. When the connecting member 40 has a round bar shape with a step, the connecting member 40 has a large diameter portion 40a.
The large diameter portion 40a has a diameter that cannot be inserted into the engagement receiving portion 26 of the back side disk 20, and the small diameter portion 40b has a diameter that can be inserted into the engagement receiving portion 26. The connecting member 40 is referred to as a large-diameter portion 40a and
The inner side of the disk 30 is joined to the front disk 30 by, for example, resistance welding, MAG welding (usually carbon dioxide gas arc welding), friction welding, or the like. The connecting member 40 also inserts the small diameter portion 40b into the engagement receiving portion 26, and connects the small diameter portion 40b and the engagement receiving portion 26 to each other, for example, by M
By joining by AG welding, laser welding or the like, it is joined to the back disk 20. When the connecting member 40 has an annular shape, the connecting member 40 is joined to the front side disk 30 by joining one end to the inner surface of the side disk 30 by, for example, friction welding. Then, the other end of the connecting member 40 is connected to the engagement receiving portion 2 of the back disk 20.
6 and joined to the back disk 20 by, for example, MAG welding, laser welding, or the like.

The method for manufacturing an automobile wheel according to the embodiment of the present invention includes the steps of joining the rim 10 and the back disc 20 and joining the front disc 30 and one end of the connecting member 40. Then, the rim 10 is joined. Joining the back disk 20 and the other end of the connecting member 40 to which the front disk 30 is joined. Alternatively, a step of connecting one end of the connecting member 40 to the inner surface of the side disk 30 and then a step of connecting the other end of the connecting member 40 to the back disk 20;
0 to the rim 10.

In the above description, when the rim 10 and the back disk 20 are joined and the front disk 30 and one end of the connecting member 40 are joined, only the rim 10 and the back disk 20 are painted, and the front disk 20 is painted. The front side of the wheel 30 may be finished and plated, or the entire wheel may be painted after assembly welding of the wheel is completed. Even when the entire wheel is painted after assembly welding. Front disk 30
And the back side disk 20 are not in contact with each other, so that the coating is entirely turned around and rust can be prevented from being generated at the fitting portion and the welding portion.

Next, the operation of the parts common to the first to fourth embodiments of the present invention will be described. Since the front side disk can be formed of a thin plate, complicated processing such as making the inner peripheral side follow a bolt hole shape is also possible. Since the back side disk and the front side disk are double disks, even if the back side disk is made of steel, the appearance of the aluminum wheel can be obtained by using the front side disk made of aluminum. Since the back disk 20 and the side disk 30 are formed as a double disk, the hat portion 24 which is the strength neck of the rear disk 20 is protected from external damage, and the strength of the wheel during use is ensured. Back disc 20
Because it is a double disk of the side disk 30, the strength of the back side disk 20 without being restricted by the design,
A structure and a shape for obtaining rigidity can be obtained, and the surface side disk 30 can be a structure and a shape for obtaining a high design without being restricted by strength.

Next, in the first to fourth embodiments of the present invention, parts unique to each embodiment will be described. 1 to 4
1 shows a first embodiment of the present invention. In the first embodiment of the present invention,
The back side disk 20 is inserted or press-fitted into the bead seat portion 13a of the rim 10, and is joined to the bead seat portion 13a from the front side of the wheel by MAG welding (usually carbon dioxide gas arc welding). Further, the engagement receiving portions 26 of the back side disk 20 are intermittently arranged in the circumferential direction (each spoke portion 2).
5 one by one) and are formed in a hole shape penetrating the back disk 20. Further, the connecting member 40 is formed in a stepped round bar shape, and the welding between the small diameter portion 40b and the engagement receiving portion 26 is performed as follows.
Although arc welding is possible, low heat input welding such as laser welding is desirable. By using low heat input welding, there is almost no effect on painting and plating.

The automobile wheel according to the first embodiment of the present invention has a rim 10 and a rear disk 20 joined together and painted, and a front disk 30 and one end of a connecting member 40 are joined together to form a front disk 30. A step of plating the front side after finishing, and then a back side disk 2 to which the rim 10 is joined
And joining the other end of the connecting member 40 to which the side disk 30 has been joined. In the first embodiment of the present invention, welding between the back disk 20 and the rim 10 can be performed in a wide space, and problems such as spatter generated during welding can be solved. Even if spatter is attached near the weld, the coating is applied and the front side disk 30
Because of this, no problem occurs because it is hidden in appearance.

FIGS. 5 and 6 show a second embodiment of the present invention. In the second embodiment of the present invention, the back side disk 20 is press-fitted into the bead seat portion 13a of the rim 10, and MAG welding (usually carbon dioxide arc welding) is performed on the side wall portion 12a.
Are joined together. Engagement receiving portion 2 of back disk 20
6 is formed in a hole shape that is intermittent in the circumferential direction (one for each spoke portion 25) and penetrates the back disk 20. The connecting member 40 has a round bar shape with a step. The welding between the subtotal portion 40b and the engagement receiving portion 26 can be performed by arc welding, but low heat input welding such as laser welding is desirable.

In the vehicle wheel according to the second embodiment of the present invention, a step of connecting one end of the connecting member 40 to the inner surface of the side disk 30 and then connecting the other end of the connecting member 40 to the back disk 20. And then joining the back disk 20 to the rim 10. Further, the entire coating is performed after the assembly welding. In the second embodiment of the present invention, the entire coating is performed after the assembly welding. However, since the rear disk 20 and the front disk 30 are not in contact with each other, the coating is turned through the hat portion 24, so that the entire coating is possible. Thus, the problem of rust at the fitting portion, which has conventionally occurred, hardly occurs.

FIGS. 7 and 8 show a third embodiment of the present invention. In the third embodiment of the present invention, the back disk 20 is press-fitted into the drop portion 11 of the rim 10 and joined to at least one of the drop portion 11 and the sidewall portion 12a by MAG welding (usually carbon dioxide gas arc welding). . However, it is desirable that the back disk 20 is joined to both the drop portion 11 and the sidewall portion 12a.
The engagement receiving portion 26 of the back side disk 20 is formed in a hole shape penetrating the back side disk 20 so as to be intermittent in the circumferential direction (one for each spoke portion 25). The connecting member 40 has a round bar shape with a step. The welding between the subtotal portion 40b and the engagement receiving portion 26 can be performed by arc welding, but low heat input welding such as laser welding is desirable. By using low heat input welding, there is almost no effect on painting and plating.

The vehicle wheel according to the third embodiment of the present invention has a rim 10 and a rear disk 20 joined together and painted, and a front disk 30 and one end of a connecting member 40 are joined together to form a front disk 30. A step of plating the front side after finishing, and then a back side disk 2 to which the rim 10 is joined
And joining the other end of the connecting member 40 to which the side disk 30 has been joined. In the third embodiment of the present invention, when the back disk 20 is welded to both the drop portion 11 and the sidewall portion 12a of the rim 10,
The problem of rust at the fitting portion between the back disk 20 and the rim 10 can be prevented as compared with the case where only one spot is welded.

FIGS. 9 to 12 show a fourth embodiment of the present invention. In the fourth embodiment of the present invention, the back disk 20 is press-fitted into the bead seat portion 13a of the rim 10, and is joined to the bead seat portion 13a by MAG welding (usually carbon dioxide arc welding) from the front side of the wheel. Further, the engagement receiving portions 26 of the back side disk 20 are continuously formed in the circumferential direction (continuously at the respective spoke portions 25), and are formed on the front side surface of the back side disk 20 without penetrating the back side disk 20. It is shaped. A notch-like groove 27 is formed on the back side surface of the engagement receiving portion 26 of the back side disk 20. Further, the connecting member 40 is formed in an annular shape, and one end thereof is exposed and joined to the side disk 30 by friction welding.
The other end is joined to the back disk 20 by laser welding. It is desirable that the notch-like groove 27 be filled with a filler material after the wheel is assembled (see FIG. 12).

In the automobile wheel according to the fourth embodiment of the present invention, one end of the connecting member 40 is exposed to the inner surface of the side disk 30 and then the other end of the connecting member 40 is connected to the back disk 20. And then joining the back disk 20 to the rim 10. In the fourth embodiment of the present invention, since the connecting member 40 has an annular shape, it can be efficiently joined to the front disk 30 by friction welding, and this portion is located on the back side of the front disk 30. Therefore, it is not necessary to treat burrs generated by friction welding. In addition, fine distortion of the surface, which is often seen in a thin plate, does not occur with joining. In addition, since the notch-like groove 27 is formed in the back disk 20, even when the back disk 20 and the connecting member 40 are joined by laser welding, the back disk 20 easily penetrates the plate thickness of the back disk 20 and is connected. A joint can be formed in the member 40, and furthermore, denaturation of the coating due to heat influence can be suppressed.

[0025]

According to the automotive wheel of the present invention, the thickness and shape of the back side disc can be freely selected with almost no design constraints, so that the strength and rigidity of the back side disc can be improved, and The strength and rigidity of the disc can be improved. Further, since the front disk is not joined to the rim, the structure and shape from the design can be selected almost without being affected by the load from the rim. Thereby, the spoke shape can be easily obtained. In addition, the structure and shape of the front side disc can be selected from the design, so that it can be formed with a thin plate, the edge of the window can be bent, and the thickness of the window (spoke) can be increased in appearance. it can.

[Brief description of the drawings]

FIG. 1 is a sectional view of a vehicle wheel according to a first embodiment of the present invention.

FIG. 2 is a half front view of the vehicle wheel according to the first embodiment of the present invention.

FIG. 3 is a half sectional view of only the back disk of the vehicle wheel according to the first embodiment of the present invention.

FIG. 4 is a part of a front view of only the back disk of the vehicle wheel according to the first embodiment of the present invention.

FIG. 5 is a sectional view of a vehicle wheel according to a second embodiment of the present invention.

FIG. 6 is a half front view of a vehicle wheel according to a second embodiment of the present invention.

FIG. 7 is a sectional view of a vehicle wheel according to a third embodiment of the present invention.

FIG. 8 is a half front view of a vehicle wheel according to a third embodiment of the present invention.

FIG. 9 is a sectional view of a vehicle wheel according to a fourth embodiment of the present invention.

FIG. 10 is a partial front view of a vehicle wheel according to a fourth embodiment of the present invention.

FIG. 11 is a half sectional view of only the back disk of a vehicle wheel according to a fourth embodiment of the present invention.

FIG. 12 shows an automobile wheel according to a fourth embodiment of the present invention.
FIG. 9 is a half cross-sectional view in a state where the back disk and the connecting member are joined and backfilled with a filler material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Rim 11 Drop part 12a Side wall part 13a Bead seat part 20 Back side disk 25 Spoke part 26 Engagement receiving part 30 Front side disk 32 Window part 40 Connecting member

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Osamu Ebihara 5-9, Yonbancho, Chiyoda-ku, Tokyo Topy Industries, Ltd. F-term (reference) 4E001 AA03 BB06 BB08 BB09 CC04 DD01

Claims (1)

[Claims] 1. A rim and a double disk, wherein the double disk has a spoke portion, and a rear disk joined to the rim at a tip end, and a wheel axial direction from the rear disk. A front disk, which is arranged on the front side and has a spoke shape between the windows and an edge of the window is bent in the disk thickness direction, and connects the front side disk with the spokes of the back side disk. A connecting member;