JPH10297201A - Wheel for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the design, to reduce the weight and to increase the rigidity, by fitting a disc outer peripheral edge part to an inside bead sheet part of a drop center rim, applying the welding assembling structure, and providing a disc with a bent part dropped toward an axial direction, on the outer peripheral edge part. SOLUTION: A rim 1 and a disc 2 are assembled by the welding. The rim 1 comprises the flange parts 11 on the both edge parts in an axial direction, the rim bead sheet parts 12 inside of the flange parts in the axial direction, and the drop parts 13. The disc 2 comprises an outer peripheral edge part, and a hub part 24 at the center, and further comprises a decorative hole 25 on the way, to use an outer peripheral face in the axial direction as a design face. A bent part dropped inward in the axial direction, is formed on the outer peripheral edge part of the disc 2. The load to be added to the rim 1 from a tire is mitigated by the rigidity of the bent part, and the stress of the welding part of the rim 1 and the disc 2 is reduced. Further the outer peripheral edge part of the disc 2 is free from an extended part, so that the weight of the disc 2 is reduced, and the weight can be totally reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile wheel, and more particularly, to a rim and a disk for large and medium wheels, and a welding assembly structure.

[0002]

2. Description of the Related Art A conventional mounting structure of a rim and a disk in an automobile wheel is as shown in FIGS. Of these, FIGS. 10 to 12 show wheels of a passenger car system, and FIGS. 13 to 15 show medium and large wheels of a truck and bus system. FIG.
Is bent in the axial direction, and the rim 1 and the disk 2 are welded and joined at the drop portion 13 of the rim 1. FIG. 11 shows that the outer peripheral end 21 of the disk 2 is bent in the axial direction, and the rim 1 and the disk 2 are connected to the bead seat 12
Shows the case of welding connection. FIG. 12 shows a case where one of the flange portions is formed on the disk 2 and the end of the bead seat portion 12 of the rim 1 is butt-welded to the inner surface of the disk 2. FIG. 13 shows a case in which the outer peripheral end 21 of the disk 2 is formed as a cylindrical portion that extends relatively long in the axial direction, and the rim 1 and the disk 2 are welded and joined at the depth of the drop portion 13 of the rim 1. FIG. 14 shows a case where the outer peripheral end 21 of the disk 2 is bent in the axial direction, and the rim 1 and the disk 2 are welded to the back of the bead seat portion 12 of the rim 1. FIG. 15 shows a case where the outer peripheral end 21 of the disk 2 is bent in the axial direction, and the rim 1 and the disk 2 are welded to each other by the ledge 14 of the rim 1.

[0003]

However, the conventional assembling structure has the following problems. In the case where the rim and the disc are assembled at the rim drop portion (the types shown in FIGS. 10 and 13), the design surface is narrow, and the design is poor. Also, in the case where the disk is assembled at the back of the rim drop portion (the type shown in FIG. 12), the weight of the disk is large. Rim and disc assembled with rim bead seat (FIGS. 11 and 14)
), The strength of the welded portion is unstable because the bead seat portion receives the largest load. Further, when the rim plate thickness is increased to stabilize the strength of the welded portion, the weight increases. Full design type (type in Fig. 12)
In the case of the rim, after the rim having the flanges at both ends is manufactured, the flange near the disk is cut off and discarded, which causes an increase in cost. In the case where the rim and the disc are assembled by the ledge portion of the rim (the type shown in FIG. 15), since the disc is arranged on the long bead side, the drop part narrows the storage space for the brake and the like, or the drop part and the brake and the like are used. There is a case where interference occurs and this method is not established. In this case, the method shown in FIG. 13 is mainly employed, but has the above-mentioned problem. In order to solve these problems, the applicant has filed a Japanese Patent Application Laid-Open No. 9-2003, which has a disk outer peripheral end 21 as shown in FIG.
There is a wheel of a type in which the rim 1 and the disk 2 are welded and joined at the curled portion 15 of the rim flange portion 11 from the outside in the axial direction of the wheel. This wheel has improved design, reduced weight and increased rigidity,
There is a growing demand for higher levels of rigidity, and there is a demand for more durable wheels. SUMMARY OF THE INVENTION An object of the present invention is to provide a wheel for an automobile, which has a large design surface, can secure a higher assembling strength, and does not increase the weight.

[0004]

The vehicle wheel of the present invention which achieves the above object of the present invention is as follows. (1) In an automobile wheel having a structure in which a disk outer peripheral end is fitted to an inner bead seat portion of a drop center rim and the inner bead seat portion and the disk outer peripheral end are welded and assembled, the disk is provided at the outer peripheral end. An automotive wheel having a bent portion that falls in the axial direction of the wheel. (2) The disk is characterized in that a bent portion is formed at an outer peripheral end portion of the wheel so that the axial direction of the wheel rises outward, thereby forming a bent portion that falls inward in the axial direction of the wheel. (3) An automotive wheel having a structure in which the outer peripheral end is welded to the flange of the rim with the outer peripheral end of the disc inserted inside the curl of the flange of the drop center rim. A flat portion is provided at the outer peripheral end of the disk, and a radially inward portion connected to the flat portion includes:
An automobile wheel characterized in that a bent portion is formed that falls inward in the axial direction of the wheel. (4) The vehicle wheel according to (1), (2), or (3), wherein the rim is a 5 ° DC rim. (5) The vehicle wheel according to (1), (2), or (3), wherein the rim is a 15 ° DC rim. (6) In an automobile wheel in which the rim and the disc are joined by welding, the rim is a 15 ° DC rim, and is radially inward of a portion where the inside of the flange portion intersects with the inside bead seat portion and is orthogonal to the rim axis. Rim flange flat surface extending in the direction of the rim, and an angular portion having a bead seat vertical surface extending in a direction parallel to the rim axis, the disc has an outer peripheral end having a bent portion which is bent toward the axial direction of the wheel. An automobile wheel, wherein the outer peripheral edge of the disc is fitted to the bead seat vertical surface of the angular portion, and the bead seat vertical surface and the outer peripheral edge of the disc are welded to each other. (7) By forming a flange at the outer peripheral end of the disk in which the axial direction of the wheel rises outward,
(6) The vehicle wheel according to (6), wherein a bent portion that falls inward in the axial direction of the wheel is formed. (8) In an automobile wheel having a structure in which the outer peripheral end is welded to the flange of the rim while the outer peripheral end of the disc is inserted inside the curled portion of the flange of the rim, the rim is a 15 ° DC rim. And radially inward of the intersection of the flange portion inside and the inside bead seat portion,
The disk has an angular portion having a rim flange flat surface extending in a direction perpendicular to the rim axis and a bead seat vertical surface extending in a direction parallel to the rim axis, wherein the disk has a flat portion at an outer peripheral end portion, A vehicle wheel, characterized in that a bent portion which falls inward in the axial direction of the wheel is formed in a radially inward portion connected to the portion.

[0005] In the above-mentioned (1) automobile wheel, the inner bead seat portion and the outer peripheral end of the disk are fitted and welded together, and the disk falls into the outer peripheral end inward in the axial direction of the wheel. Since a bent portion is formed, when a load is applied to the rim bead seat, the stress can be absorbed by the bent portion of the disc, so that the stress applied to the welded joint can be reduced and the weight of the wheel can be reduced. , Endurance strength can be improved. In the above-mentioned (2) automobile wheel, the disk has a bent portion that rises in the axial direction of the wheel by forming a flange portion that rises outward in the axial direction of the wheel. Can be formed by press forming, cold spinning forming, or the like without cutting, and an automobile wheel with improved durability can be manufactured economically. In the automobile wheel described in (3) above, the curving portion of the rim flange portion has a flat portion at the outer peripheral end portion of the disc, and has a flat portion at the radially inner portion of the disc. Since the portion is formed, the design surface can be widened, and the work of welding and assembling the rim and the disc becomes easy. Since the rim used in the above-mentioned (4) is a 5 ° DC type rim, it can be applied mainly to a wheel for a passenger car and to a wheel for a small and medium-sized bus or truck. In the automobile wheel of the above (5), since the rim used is a 15 ° DC type, it can be applied to large and medium sized bus and truck wheels. In the automobile wheel of the above (6), the rim is a 15 ° DC type rim, and further, has an angular portion at a portion where the inside of the flange portion intersects with the inside bead seat portion. Because of the assembled structure in which the ends are fitted, the fitting is easy and the rigidity of the wheel is high. The vehicle wheel of the above (7) has an action combining the above (1) and (6). The vehicle wheel of the above (8) has an operation combining the above (3) and (6).

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention is shown in FIGS. 1 to 9 (showing medium wheels for trucks and buses as well as wheels for large vehicles, and small steel wheels for passenger cars). The same applies to wheels made of the same.) FIG. 8 shows the basic shape of a 15 ° DC rim used for large and medium-sized buses, trucks, and the like. This is usually called because the bead seat portion 12 is inclined at 15 ° with respect to the rim axis. I have. FIG. 9 shows the shape of a 5 ° DC rim generally used for passenger cars, in which the bead seat portion 12 is inclined by 5 ° with respect to the axis of the rim. Components common to all the embodiments are denoted by the same reference numerals throughout the embodiments. First, components common to all embodiments of the present invention will be described with reference to FIG. In FIG. 1, an automobile wheel is formed by welding a rim 1 and a disk 2 by welding. The rim 1 has a flange 11 at both ends in the axial direction, a rim bead seat 12 extending inward in the axial direction, and a drop 1 at the center in the axial direction.
And 3. There may be a ledge portion 14 between the rim bead seat portion 12 and the drop portion 13. Disc 2
Has an outer peripheral end portion 21, a central hub portion 24, a decorative hole 25 on the way, and an axially outer surface constitutes a design surface.

Next, a configuration specific to each embodiment of the present invention will be described. In the first embodiment of the present invention, as shown in FIG. 2, the rim 1 is a 15 ° DC rim,
A rising portion 16 that curves outward from the bead seat portion 12 and extends radially outward; a curl portion 15 that smoothly turns inward from the outer peripheral end of the rising portion 16 and whose tip extends radially inward. And Curl part 15
A rim flange flat surface 14a having a tip portion 17 and an inner peripheral surface 18 and extending radially inward of a portion where the inner peripheral surface 18 intersects with the inner bead seat portion 12b in a direction orthogonal to the rim axis. And a bead seat vertical surface 14b extending in a direction parallel to the rim axis. The corner portion 20 of the angular portion 14b is formed in an R shape. This rim shape has been filed by the applicant and registered as Utility Model Registration 2505902. An angular rim is formed by using a rolled section steel having a different cross-sectional shape in the width direction as a material, rolling it into a cylindrical shape, and welding the butted ends to form a rim.

The disk 2 has a flange 23 at its outer peripheral end 21 which rises outward in the axial direction of the wheel. Therefore, a bent portion 22 which falls inward in the axial direction of the wheel can be formed. it can. Disc 2
Is formed by press molding, cold spinning, or a combination thereof. Bending part 2
According to the experiment conducted by the applicant, the bending depth d of 2 is 30% or more, preferably 50% or more of the basic plate thickness of the disk 2. This is a value common to each of the following embodiments. The outer peripheral end 21 of the disk 2 is fitted to the bead seat vertical surface 14 b of the angular portion 14 of the rim 1. Then, the corner portion 20 of the angular portion 14 and the upper end portion of the flange portion 23 of the disk 2 are welded and joined from the axial outside of the wheel (the front side of the wheel), and the rim 1 and the disk 2 are assembled.

In the second embodiment of the present invention, as shown in FIG. 3, the rim 1 uses the same angular 15 ° DC rim as in the first embodiment. The bent portion 22 which falls inward in the axial direction is formed. The disk outer peripheral end 21 is fitted to the bead seat vertical surface 14b of the angular portion 14, and the corner portion 20 of the angular portion 14 and the upper end of the disk outer peripheral end 21 are welded and joined from the axial outside of the wheel. 1 and the disk 2 are assembled.

In the third embodiment of the present invention, as shown in FIG. 4, an angular type 15 ° DC rim is used for the rim 1 as in the first and second embodiments. The disk 2 is provided with a flat portion 24 at the outer peripheral end, and a bent portion 22 which is continuous with the flat portion 24 and is formed in a radially inward portion to fall inward in the axial direction of the wheel. . The flat portion 24 of the disc 2 is inserted inside the curled portion 15 of the flange portion 11 of the rim 1,
And it is held on the rim flange flat surface 14 a of the angular portion 14 of the rim 1. The outer peripheral end 21 of the disk and the curl 15 of the flange 11 of the rim 1
It is welded and joined from the outside in the wheel axial direction.

In the fourth embodiment of the present invention, a 15 ° DC rim is used as shown in FIG. 5, but the flange portion 11 of the rim 1 has a curl portion 15 and a rim bead seat portion 1.
The rising portion 16 connecting the second and the second 2 is formed in a shape that is almost equal in thickness and remains curved (not an angular shape). As in the first embodiment, the disk 2 has a flange 23 formed on the outer peripheral end 21 of the disk 2 to rise outward in the axial direction of the wheel. Disc 2
The outer peripheral end 21 is fitted into the inner bead seat portion of the rim 1, and the outer peripheral end 21 of the disc and the flange 1 of the rim 1 are fitted.
The first curl portion 15 is welded from the outside in the wheel axial direction. The 15 ° DC rim of this type may be manufactured by rolling a rolled steel material into a cylindrical shape, or by rolling a plate-shaped material and welding a terminal, and then forming the required cross-sectional shape by roll forming. It may be formed. in this case,
The plate thickness of each cross section becomes substantially equal.

In a fifth embodiment of the present invention, as shown in FIG. 6, the rim is a 15 ° DC rim, and the flange portion 11 of the rim 1 has a curl portion 15 and a rim bead seat portion 12.
Is formed in a shape that is substantially equal in thickness and remains curved (not an angular shape). The disk 2 is formed with a bent portion 22 that falls from the vicinity of the outer peripheral end 21 toward the inside in the axial direction of the wheel. Disc outer peripheral end 21 and flange 1 of rim 1
The first curl portion 15 is welded from the outside in the wheel axial direction.

In a sixth embodiment of the present invention, as shown in FIG. 7, the rim is a 15 ° DC rim, and the flange portion 11 of the rim 1 has a curl portion 15 and a rim bead seat portion 12.
Is formed in a shape that is substantially equal in thickness and remains curved (not an angular shape). The disk 2 is provided with a flat portion 24 at the outer peripheral end, and a bent portion 22 which is continuous with the flat portion 24 and is formed in a radially inward portion to fall inward in the axial direction of the wheel. . Flat portion 24 of disk 2
Is inserted inside the curled portion 15 of the flange portion 11 of the rim 1 and is held by the curled portion 15 of the rim 1.
Then, the disk outer peripheral end portion 21 and the flange portion 1 of the rim 1
The first curl portion 15 is welded from the outside in the wheel axial direction.

Next, the operation of the embodiment of the present invention will be described.
An operation common to all the embodiments of the present invention will be described. Since the disk outer peripheral end 21 extends toward the inside of the inner bead seat portion or the flange portion 11, the disk 2
Of the front (axial outer surface) can be large, without feeling narrow,
The design becomes better. In addition, since a bent portion 22 is formed at the outer peripheral end of the disk 2 to fall inward in the axial direction of the wheel, the load applied to the rim from the tire by the bent portion 22 is reduced, and the rim 1 and the disk 2 Can be reduced. Also,
Since the disk outer peripheral end 21 does not have a cylindrical portion extending in the axial direction, the disk weight is correspondingly reduced, and the weight of the wheel can be reduced. This contributes to improving the fuel efficiency of the vehicle.

The operation unique to each embodiment of the present invention is as follows. In the vehicle wheel according to the first embodiment of the present invention, as shown in FIG. 2, the rim 1 is reinforced by an angular portion 14, and the bead seat vertical surface 14
With b, the fitting to the outer peripheral end 21 of the disk 2 can be easily and accurately performed, so that the reliability of the welding assembling strength is improved. Further, by forming the flange portion 23 which rises outward in the axial direction of the wheel at the outer peripheral end portion 21, it is possible to form a bent portion which falls inward in the axial direction of the wheel, so that the disk 2 can be formed efficiently. it can.

In the vehicle wheel according to the second embodiment of the present invention, as shown in FIG. 3, since the flange portion 23 is not formed on the outer peripheral end portion 21 of the disk, the vehicle wheel according to the first embodiment of the present invention is provided. (However, the rigidity is not reduced as compared with the conventional wheel), but the other effects are the same as those of the vehicle wheel of the first embodiment of the present invention.
In addition, material costs can be saved because there is no flange portion. In the vehicle wheel according to the third embodiment of the present invention, as shown in FIG. 4, the disk 2 is provided with a flat portion 24 at the outer peripheral end, and is connected to the flat portion 24 to form a radially inward portion. Is formed with a bent portion 22 that falls inward in the axial direction of the wheel. The flat portion 24 of the disc 2 is inserted inside the curled portion 15 of the flange portion 11 of the rim 1 and is held on the rim flange flat surface 14 a of the angular portion 14 of the rim 1. Therefore, as compared with the first and second embodiments, a larger material is required for the flat portion 24 of the disc 2, but the flat portion of the disc 2 is set on the flat surface of the rim flange reliably, and Since the terminal portion 21 of the disk 2 extends to the depth of the curl portion 15 and can be firmly welded to the curl portion 15, a rigid automobile wheel can be manufactured efficiently. In the vehicle wheel according to the fourth embodiment of the present invention, the first
Compared to the embodiment, the same disk 2 is used,
Since the rim 1 uses a rim having no angular portion, the rim 1 can be applied to an inexpensive rim or a 5 ° DC rim for a passenger car, although the rigidity and the production efficiency are inferior, and the application range is widened.
(Compared to conventional wheels, there is no need to form a cylindrical part on the disc, so when viewed in total with the disc,
It does not increase the cost). In the automobile wheel according to the fifth embodiment of the present invention, as shown in FIG. 6, as compared with the second embodiment, only the rim having no angular portion is used. Although it is inferior, in other respects, it has the same operation as the second embodiment. In the vehicle wheel according to the sixth embodiment of the present invention, as shown in FIG.
Compared to the third embodiment, only the rim having no angular portion is used, so that it is inferior in rigidity and manufacturing efficiency, but can be applied to inexpensive rims and 5 ° DC rims for passenger cars, thereby expanding the range of application. . (Compared to the conventional wheel, there is no need to form a cylindrical portion on the disk, so the cost does not increase when viewed in total with the disk.)

[0017]

According to the automobile wheel of the first aspect, the inner bead seat portion and the outer peripheral end of the disk are fitted to each other to perform welding and assembly, and the disk falls on the outer peripheral end in the axial direction of the wheel. The bend of the rim bead seat allows stress to be absorbed by the bend of the disc when a load is applied to the rim bead seat, reducing the stress on the weld joint and reducing the weight of the wheel while maintaining durability. Strength can be improved. According to the vehicle wheel of the second aspect, the disk has a bent portion formed at the outer peripheral end portion, which is formed by forming a flange portion in which the axial direction of the wheel rises outward, and which falls inward in the axial direction of the wheel. Therefore, the outer peripheral end portion of the disk can be processed by press forming, cold spinning forming, or the like without cutting, and a more rigid automobile wheel can be provided at low cost. According to the vehicle wheel of the third aspect, the flat portion is provided at the outer peripheral end portion of the disk inside the curled portion of the flange portion of the rim, and at the radially inner portion of the disk and the axially inner portion of the wheel. Since the bent portion is formed so as to fall inward in the axial direction of the wheel, the design surface can be widened, and the work of welding and assembling the rim and the disc can be facilitated. According to the vehicle wheel of claim 4,
Since the rim uses a 5 ° DC rim, it can be applied to small and medium-sized truck and bus wheels mainly for passenger car type wheels. According to the vehicle wheel of the fifth aspect, since the rim of the 15 ° DC type is used, it can be applied to large and medium-sized bus and truck wheels. According to the automobile wheel of the sixth aspect, the rim is a 15 ° DC type rim, and further has an angular portion at a portion where the inside of the flange portion and the inside bead seat portion intersect. The mounting structure in which the outer peripheral end portions are fitted has the same effect as that of (1) in that the fitting is easy and the rigidity of the wheel is high. The vehicle wheel according to the seventh aspect has the combined effects of the first and sixth aspects. The vehicle wheel according to the eighth aspect has the combined effects of the third and sixth aspects.

[Brief description of the drawings]

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

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

FIG. 3 is a partial sectional view of an automobile wheel according to a second embodiment of the present invention.

FIG. 4 is a partial cross-sectional view of a vehicle wheel according to a third embodiment of the present invention.

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

FIG. 6 is a partial sectional view of a vehicle wheel according to a fifth embodiment of the present invention.

FIG. 7 is a partial cross-sectional view of a vehicle wheel according to a sixth embodiment of the present invention.

FIG. 8 is a sectional view showing a shape of a 15 ° DC type rim.

FIG. 9 is a sectional view showing the shape of a 5 ° DC type rim.

FIG. 10 is a cross-sectional view of a conventional passenger car wheel assembled with a drop part.

FIG. 11 is a sectional view of a conventional bead assembling type of a vehicle wheel.

FIG. 12 is a cross-sectional view of a conventional passenger car wheel of a full design type.

FIG. 13 is a sectional view of a conventional truck / bus wheel drop assembly type (5 ° DC, 15 ° DC).

FIG. 14 is a sectional view of a conventional truck / bus wheel with bead back assembly type (5 ° DC, 15 ° DC).

FIG. 15 is a sectional view of a conventional wheel for assembling a ledge portion (15 ° DC) of a truck or bus wheel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rim 2 Disk 11 Flange part 12 Bead seat part 12a Outer bead seat part 12b Inner bead seat part 13 Drop part 14 Angular part 14a Rim flange flat surface 14b Bead sheet vertical surface 15 Curl part 16 Rising part 17 The tip (of curl part) Part 18 Inner peripheral surface (of curled part) 20 Corner surface (of rising part) 21 Outer peripheral end part 22 Bent part 23 Flange part 24 Flat part

Claims (8)

[Claims] 1. An automobile wheel having a structure in which an outer peripheral end portion of a disc is fitted to an inner bead seat portion of a drop center rim and the inner bead seat portion and the outer peripheral end portion of the disc are welded and assembled. An automobile wheel characterized in that a depression bent portion is formed in the portion in the axial direction of the wheel. 2. The disk according to claim 1, wherein a bent portion is formed at an outer peripheral end of the disk so as to form a flange portion in which the axial direction of the wheel rises outward, so as to fall inward in the axial direction of the wheel. The vehicle wheel according to claim 1. 3. An automobile wheel having a structure in which said outer peripheral end portion and said rim flange portion are welded to each other in a state where said outer peripheral end portion is inserted inside a curl portion of a flange portion of said drop center rim. A vehicle wheel, wherein a flat portion is provided at an outer peripheral end portion, and a bent portion which falls inward in the axial direction of the wheel is formed in a radially inner portion connected to the flat portion. 4. The rim of claim 1 wherein said rim is a 5 ° DC rim.
An automobile wheel according to claim 2 or claim 3. 5. The vehicle wheel according to claim 1, wherein the rim is a 15 ° DC rim. 6. An automobile wheel in which a rim and a disc are joined by welding, the rim is a 15 ° DC rim,
Angular having a rim flange flat surface extending in a direction orthogonal to the rim axis and a bead seat vertical surface extending in a direction parallel to the rim axis on a radially inner side of a portion where the inner side of the flange intersects with the inner bead seat. The disk has a bent portion formed at the outer peripheral end thereof in the axial direction of the wheel, and the disk outer peripheral end is fitted to the bead sheet vertical surface of the angular portion, and the bead is formed. An automobile wheel, wherein a vertical surface of a seat is welded to an outer peripheral end of the disc. 7. The disk according to claim 1, wherein a bent portion is formed at an outer peripheral end of the disk so as to form a flange portion in which the axial direction of the wheel rises outward, thereby falling inward in the axial direction of the wheel. An automotive wheel according to claim 6. 8. An automobile wheel having a structure in which the outer peripheral end and the rim flange are welded to each other with the disk outer peripheral end inserted inside the curled portion of the rim flange, wherein the rim is at 15 °. A rim flange flat surface extending in a direction orthogonal to the rim axis, a bead seat extending in a direction parallel to the rim axis, radially inward of a portion where the inner side of the flange portion intersects with the inner bead seat portion; The disk has an angular portion having a vertical surface, and the disc has a flat portion at an outer peripheral end portion, and a bent portion which falls inward in the axial direction of the wheel is formed at a radially inward portion connected to the flat portion. An automotive wheel characterized by: