JPH10236102A - Two-piece full design wheel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a two-piece full design wheel at low cost by eliminating weld burning or plating cracks. SOLUTION: This wheel comprises a disk 1 having a flange part 1a and a bead sheet part 2a of a rim having no flange at one side whose end part 2b is welded and connected to the back side of the root of the flange part 1a of the disk 1. The thickness of a disk welding part 1b of the disk 1 is larger than that of the flange part 1a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a two-piece full design wheel.

[0002]

2. Description of the Related Art The design of an automobile wheel is enlarged to enhance the fashionability and aesthetics.
There is a two-piece full design wheel as shown in For this type of wheel, a flangeless rim 2 on one side is prepared as shown in FIG.
The end 2b is welded to the disk weld 1b at the base of the flange on the back side of the disk 1 having the flange 1a as shown in FIG. In this case, the reference plate thickness of the disk 1 is usually 4 to 8 mm from the viewpoint of strength. On the other hand, the plate thickness of the flange portion 1a of the disk 1 is appropriately set to 2.3 to 4.0 mm in order to secure the strength surface and the mountability of the balance weight. For this purpose, as shown in FIG. 6, the thickness of the disk welded portion 1b of the disk 1 having the flange portion 1a is formed by cutting to the same thickness as the disk flange portion 1a. That is, when the flange portion 1a is cut, the same thin portion as the flange portion 1a is cut to the disk welded portion 1b.

[0003]

However, as described above, the wheel cut to the same thickness as the flange portion 1a up to the disk welding portion 1b has the following problems. (1) In the case of a wheel to be coated, the thickness of the disk welded portion 1b is small, so that the welding heat during welding causes the peripheral surface 1d of the design surface 1c of the disk on the side opposite to the welded portion.
Welding burns (fine shaded areas) cause microscales, and if the coating process is performed as it is, the scales will peel off and the coating will fall, resulting in a significant decrease in rust prevention.
In order to prevent this, a step of polishing the design surface 1c of the disk 1 with a buff or the like to remove the scale after welding and before coating was required. (2) In the case of a plated wheel, also due to heat effects,
Since plating cracks occur in the same portion 1d of the design surface 1c as (1), plating alone of the disk could not be performed, and plating treatment had to be performed after welding assembling, and plating cost had to be increased. . (3) Since it is impossible to make a groove in the disk welding portion 1b during welding, the space to which the welding torch approaches is limited, and the direction of the welding torch approaches the direction perpendicular to the design surface. Therefore, the welding heating became strong, and the welding burn was promoted. In addition, it was difficult to obtain an appropriate penetration shape for welding. An object of the present invention is to provide a two-piece full design wheel at a low price without any problem in welding quality.

[0004]

The present invention for achieving the above object is as follows. (1) In a two-piece full design wheel, a disk having a flange portion and an end of a bead seat portion on a flangeless side of a one-sided flangeless rim are welded to the back of a root portion of the flange portion of the disk. A two-piece full design wheel, wherein a thickness of a disk welded portion which is a welded portion with the one-sided flangeless rim is formed thicker than a thickness of the disk flanged portion. (2) The two-piece full design wheel according to (1), wherein the thickness of the disk welded portion is 4 to 8 mm. (3) The groove shape of the joint between the back side near the root of the flange portion of the disc and the end of the bead seat portion of the one-sided flangeless rim is chamfer chamfered (1) or (2). 2-piece full design wheel. (4) The groove shape of the joint between the back side near the root of the flange portion of the disc and the end of the bead seat portion of the one-sided flangeless rim is an R-chamfer (1) or (2). 2-piece full design wheel.

[0005] In the two-piece full design wheel of the above (1), the thickness of the disc welded portion can be made thicker than that of the conventional product, so that the burnt surface of the design surface of the disc welded portion can be prevented, and buffing and the like before painting can be performed. Work can be omitted. Also, even when applied to a plating wheel, the disk is plated separately and the rim can be welded without plating, so workability,
Economic efficiency can be improved. In the two-piece full design wheel of (2), the effect of (1) can be more reliably ensured. In the two-piece full design wheels (3) and (4), the penetration of welding can be more reliably ensured.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A two-piece full design wheel according to a preferred embodiment of the present invention will be described below with reference to FIGS. The same parts as those in the conventional example will be described with the same reference numerals. FIG. 1 shows the basic shape of a two-piece full design wheel according to an embodiment of the present invention, where 2 is a rim. The rim 2 has a rim flange portion on one side, and has a flangeless bead seat portion 2a without a flange on the other side. Reference numeral 1 denotes a disk. The disk 1 is formed by drawing or spinning a plate having a thickness t1 (normally 4 to 8 mm). Disc 1
Is formed with a flange portion 1a at a radial end thereof.
It plays the same role as the flange of the rim 2. The flange portion 1a is formed by draw forming or spinning forming while keeping the plate thickness t1.

Next, in FIG. 1, the portion indicated by a dotted line of the flange portion 1a is cut to a thickness of 2.3 to 4.0 mm, which is a desirable thickness for the flange portion 1a. by this,
This makes it possible to ensure the mounting of the balance weight. Also, a disk welded portion 1 connected to the flange portion 1a
b, while securing a plate thickness of 4 to 8 mm as the plate thickness t2,
A cutting process is performed. In this case, unlike the conventional case, the thin portion is not cut into the disk welding portion 1b as in the case of the flange portion 1a. Therefore, the plate thickness t2 of the disk welded portion 1b is always greater than the flange portion 1a. The flange 1a of the disk 1 and the disk weld 1b are smoothly connected in an R shape. Then, the end portion 2b of the bead seat portion 2a of the flangeless side of the the disk weld 1b rim 2, those are positioned in contact with weld fixture in position (not shown), CO ₂ in this state The rim and the disk are welded to each other by welding or laser welding.

In this case, the edge 2b of the bead seat portion 2a of the rim 2 and the disk welded portion 1b may be provided with a C-chamfer (chamfer chamfer) groove shape as shown in FIG. It is desirable from the viewpoint of obtaining good penetration. In this case, the groove may be applied only to the bead seat end 2b or the disk weld 1b in some cases. Further, the groove shape may be formed by processing both butts into an R shape as shown in FIG. By doing so, it is possible to contribute to prevention of injuries when handling the disc 1 and the rim 2 alone. Since the thickness of the disk welded portion 1b is larger than that of the flange portion 1a in cutting, a material having the same thickness t1 as the conventional one is used. Does not occur. This is because the thickness is not so high as when the temperature at the time of welding the disk welded portion 1b is low. As a result, in the case of a painted wheel, it is not necessary to polish the design surface with a buff before painting, so that a significant cost reduction can be achieved. In the case of a plating wheel, even if the disk is plated alone and then welded to the rim, there is no problem in the weld.

[0009]

According to the wheel of the first aspect, the thickness of the disk welded portion is formed to be larger than the thickness of the disk flange portion. Can be prevented. As a result, in the case of a painted wheel, steps such as buffing before painting, which has been conventionally required, can be omitted. Further, in the case of a plated wheel, plating cracks do not occur during welding, so that the disk can be plated alone and then the disk and the rim can be assembled by welding. Thus, a low-cost two-piece full design wheel can be provided. According to the wheel of the second aspect, the same effect as the first aspect can be more reliably provided. According to the wheel of the third aspect, a more reliable weld penetration shape can be achieved. According to the wheel of the fourth aspect, a safer operation can be performed at the time of manufacturing.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of a wheel according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view showing a groove shape when welding the wheel according to the embodiment of the present invention.

FIG. 3 is a partial sectional view showing a groove shape at the time of welding and assembling a wheel according to another embodiment of the present invention.

FIG. 4 is a sectional view showing a conventional two-piece full design wheel.

FIG. 5 is a sectional view showing a one-sided flangeless rim.

FIG. 6 is a sectional view showing a disk shape of a conventional two-piece full design wheel.

[Explanation of symbols]

 Reference Signs List 1 disk 1a disk flange 1b disk weld 2 rim 2a bead seat 2b end of bead seat

Claims (4)

[Claims] 1. A two-piece full design wheel in which a disk having a flange portion and an end of a bead seat portion on a flangeless side of a one-sided flangeless rim are welded to a back side of a root portion of the flange portion of the disk. A two-piece full design wheel, wherein a thickness of a disk welded portion, which is a welded portion of the disk to the one-sided flangeless rim, is formed thicker than a thickness of the disk flanged portion. 2. The two-piece full design wheel according to claim 1, wherein the thickness of the disk welded portion is 4 to 8 mm. 3. A chamfered chamfered shape of a joint portion between a back side of the disk near a root of the flange portion and an end of a bead seat portion of the one-sided flangeless rim. The described two-piece full design wheel. 4. The groove shape of the joint between the back side of the disk near the root of the flange and the end of the bead seat of the one-sided flangeless rim is an R-chamfer. The described two-piece full design wheel.