Vehicle wheels
The vehicle wheel design with a plate-like extension and reinforcing portion between spokes addresses structural and aesthetic limitations, enhancing aerodynamics and design freedom while reducing weight and manufacturing complexity.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- CENTRAL MOTOR WHEEL CO LTD
- Filing Date
- 2024-12-25
- Publication Date
- 2026-07-07
AI Technical Summary
Conventional vehicle wheels have limitations in the design and structural integrity of the members between the spokes, which affect their aesthetic appeal and aerodynamic performance.
The vehicle wheel design incorporates a plate-like extension portion between adjacent spoke portions, featuring a reinforcing portion that extends axially from the wheel rim, enhancing structural integrity and aerodynamic efficiency while allowing for increased design freedom.
The new design improves aerodynamics by reducing drag coefficient and allows for lighter weight, while increasing design flexibility and productivity through improved manufacturing processes.
Smart Images
Figure 2026112523000001_ABST
Abstract
Description
Technical Field
[0001] The technology disclosed in this specification relates to vehicle wheels.
Background Art
[0002] A vehicle wheel includes a cylindrical wheel rim portion, a hub portion attached to a vehicle hub on the vehicle side, and a plurality of spoke portions. There is also a vehicle wheel in which an extension portion, which is a planar plate-like member, is arranged between a set of adjacent spoke portions (see Patent Document 1).
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] However, there was room for improvement in the members between the spokes of conventional vehicle wheels.
[0005] This specification discloses a technology capable of solving the above problems.
Means for Solving the Problems
[0006] (1) The vehicle wheel disclosed herein comprises a cylindrical wheel rim portion, a hub mounting portion attached to a vehicle-side axle hub, a plurality of spoke portions extending radially from the hub mounting portion and joined to the wheel rim portion, and an extension portion positioned in the circumferential direction of the wheel rim portion between at least one adjacent pair of spoke portions from the plurality of spoke portions. The extension portion has a plate-like portion extending from the wheel rim portion toward the hub mounting portion and separated from both the hub mounting portion and the pair of spoke portions along the circumferential direction, and a reinforcing portion protruding from at least one surface of the plate-like portion and extending in the axial direction of the wheel rim portion. With this vehicle wheel, the extension portion having a reinforcing portion is positioned between a pair of spoke portions, and the extension portion is in contact only with the wheel rim portion, thus increasing the design freedom of the extension portion. Furthermore, the reinforcing portion can suppress deformation of the extension portion when the vehicle is running.
[0007] (2) The vehicle wheels disclosed herein include a cylindrical wheel rim, a hub mounting portion attached to a vehicle-side axle hub, a plurality of spokes extending radially from the hub mounting portion and joined to the wheel rim, and an extension portion positioned in the circumferential direction of the wheel rim between at least one adjacent pair of spokes from the plurality of spokes. The extension portion extends from the wheel rim toward the hub mounting portion and is separated from both the hub mounting portion and the pair of spokes, and has a plate-like portion along the circumferential direction. All or part of the vehicle-side surface of the plate-like portion lies on the surface of a virtual plane formed by a first line formed on the vehicle side of the first spoke of the pair of spokes and a second line formed on the vehicle side of the other second spoke of the pair of spokes. In this vehicle wheel, an extension is positioned between the first spoke and the second spoke adjacent to the first spoke, and since the extension is in contact only with the wheel rim, the design freedom of the extension is increased. Furthermore, productivity is improved because all or part of the vehicle side of the extension substantially coincides with the virtual surface. [Brief explanation of the drawing]
[0008] [Figure 1] Front view showing the external configuration of the vehicle wheel of this embodiment. [Figure 2] Rear view showing the external configuration of the vehicle wheel of this embodiment. [Figure 3] Enlarged view of III in Figure 1 [Figure 4] Enlarged view of IV in Figure 2 [Figure 5] Cross-sectional view at position VV in Figure 1 [Figure 6] Cross-sectional view at position VI-VI in Figure 1 [Figure 7] Perspective view of Figure 4 [Modes for carrying out the invention]
[0009] A. Embodiments: A-1. Configuration of Wheel 10: Figure 1 is a front view showing the external configuration of the vehicle wheel of this embodiment (hereinafter simply referred to as "wheel 10"). Figure 2 is a rear view showing the external configuration of the wheel 10 of this embodiment. Figure 1 shows mutually orthogonal XYZ axes for specifying direction. In this specification, the Z-axis direction is the direction parallel to the rotation axis of the wheel 10 (hereinafter referred to as the "wheel axis direction"). Note that the wheel 10 may actually be positioned in a direction different from the Z-axis direction. The same applies to Figure 2 and subsequent figures. Furthermore, one side of the wheel axis direction (positive Z-axis direction side) of the wheel 10 is referred to as the "outer side," and the other side of the wheel axis direction (negative Z-axis direction side) is referred to as the "inner side."
[0010] As shown in Figure 1, the wheel 10 comprises a wheel rim portion 20 and a wheel disc portion 30. The wheel rim portion 20 is cylindrical in shape. The wheel rim portion 20 is fitted with an annular tire (not shown). The wheel disc portion 30 is positioned within the outer circumference of the wheel rim portion 20. When the wheel 10 is mounted on the vehicle body (not shown), the inner side of the wheel disc portion 30 faces the vehicle body. The outer side of the wheel disc portion 30 faces away from the vehicle body. The outer surface of the wheel disc portion 30 is the design surface of the wheel 10. In this embodiment, the wheel rim portion 20 and the wheel disc portion 30 are integrally molded. The wheel 10 is a one-piece type wheel.
[0011] The wheel disc portion 30 comprises an outer flange portion 100, a hub mounting portion 200, five spoke portions 300, and an extension portion 400. The wheel disc portion 30 has an opening C that opens in the direction of the wheel axis.
[0012] The outer flange portion 100 is arranged along the circumferential direction of the wheel disc portion 30. The outer flange portion 100 forms the circumference of the wheel disc portion 30. The outer flange portion 100 is in the shape of an annular plate. The outer flange portion 100 is in contact with the outer surface of the wheel rim portion 20.
[0013] The hub mounting portion 200 is located in the center of the wheel disc portion 30. The hub mounting portion 200 is a circumferential plate-shaped member. The hub mounting portion 200 has a roughly regular pentagonal shape. The hub mounting portion 200 forms a hub hole h1 and a plurality (five in this embodiment) of bolt holes h2. The hub hole h1 is formed in the center of the hub mounting portion 200. The hub hole h1 is a hole for attaching the wheel 10 to the axle hub of the vehicle. The hub hole h1 opens in the wheel axis direction (Z axis direction) of the hub mounting portion 200. The plurality of bolt holes h2 are arranged around the hub hole h1. The bolt holes h2 are holes for passing bolts for connecting the vehicle. Each bolt hole h2 is formed between the hub hole h1 of the hub mounting portion 200 and each side of the roughly regular pentagon of the hub mounting portion 200. Each bolt hole h2 is arranged at equal intervals along the circumferential direction of the hub hole h1. Each bolt hole h2 opens in the wheel axial direction (Z-axis direction) of the hub mounting portion 200.
[0014] The five spokes 300 are arranged at equal intervals in the circumferential direction of the wheel rim 20. Each spoke 300 extends radially from the vertex of the approximately regular pentagon of the hub mounting portion 200 and contacts the outer inner surface of the wheel rim 20. A pair of adjacent spokes 300 form a first opening C1 in the circumferential direction. The first opening C1 opens in the axial direction of the wheel.
[0015] The spoke portion 300 of this embodiment has a second opening C2. The second opening C2 opens in the wheel axial direction. The spoke portion 300 has a first branch portion 320, a second branch portion 340, and a third branch portion 360. The first branch portion 320, the second branch portion 340, and the third branch portion 360 are arranged at equal intervals in the circumferential direction of the wheel rim portion 20. The second opening C2 is formed between the first branch portion 320 and the second branch portion 340, and between the second branch portion 340 and the third branch portion 360. Each branch portion is rod-shaped. The circumferential width of the inner side surface of each branch portion is wider than the circumferential width of the outer side surface. The circumferential cross-section of each branch portion is substantially trapezoidal.
[0016] Figure 3 is an enlarged view of III in Figure 1. That is, Figure 3 is an enlarged view of the outer side of the wheel 10 of the present embodiment. Figure 4 is an enlarged view of IV in Figure 2. That is, Figure 4 is an enlarged view of the inner side of the wheel 10 of the present embodiment. Figure 5 is a cross-sectional view at the position of V-V in Figure 1. That is, Figure 5 is a cut view of the XY plane at the position of V-V in the wheel 10. Figure 6 is a cross-sectional view at the position of VI-VI in Figure 1. That is, Figure 6 is a cut view of the YZ plane at the position of VI-VI in the wheel 10.
[0017] As shown in Figure 3, the extending portion 400 is a member extending from the wheel rim portion 20 in the direction of the hub mounting portion 200. The extending portion 400 is disposed in the first opening C1 between any pair of adjacent spoke portions 300. The extending portion 400 is separated from the pair of spoke portions 300 and the hub mounting portion 200. As shown in Figure 4, the extending portion 400 has a plate-like portion 420 and a pair of reinforcing portions 440. In the present embodiment, five extending portions 400 are disposed on the wheel disk portion 30.
[0018] As shown in Figure 3, the plate-like portion 420 is the main body member of the extending portion 400. The shape of the plate-like portion 420 is plate-like extending from the wheel rim portion 20 in the direction of the hub mounting portion 200. The plate-like portion 420 extends in the circumferential direction. The width of the base end portion of the plate-like portion 420 (the portion in contact with the wheel rim portion 20) is wider than the width of the tip end portion. The plate-like portion 420 has a substantially trapezoidal shape with the portion in contact with the circumferential side wheel rim portion 20 as the lower base in a front view. The substantially trapezoidal shape of the plate-like portion 420 is symmetric with respect to the circumferential direction of the wheel disk portion 30.
[0019] The dimensions of the plate-shaped portion 420 are as follows. As shown in Figure 3, first draw three auxiliary lines. Auxiliary line L1 is a line connecting the intersections of each adjacent pair of spokes 300 and the wheel rim 20 on the outer side of the wheel disc portion 30. Auxiliary line L2 is a line connecting the center of the wheel disc portion 30 (center of the hub hole h1) and the midpoint of auxiliary line L1. Auxiliary line L3 is a line perpendicular to auxiliary line L2 at the intersection of the tip of the plate-shaped portion 420 and auxiliary line L2. The circumferential width W11 on the base end side of the plate-shaped portion 420 is approximately 90% of the width W21 of the adjacent pair of spokes 300 along auxiliary line L1. Note that this ratio may be in the range of 30% or more and 97% or less, 60% or more and 95% or less, or 80% or more and 92% or less. The circumferential width W12 of the tip side of the plate-shaped portion 420 is approximately 70% of the width W22 of an adjacent pair of spoke portions 300 along auxiliary line L3. This ratio may be in the range of 20% or more and 95% or less, 50% or more and 90% or less, or 60% or more and 80% or less. Also, along auxiliary line L2, the radial width W13 of the plate-shaped portion 420 (width from the wheel rim portion 20 to the tip of the plate-shaped portion 420) is approximately 85% of the width W23 from the wheel rim portion 20 to the sides of the roughly regular pentagon of the hub mounting portion 200. This ratio may be in the range of 20% or more and 95% or less, 40% or more and 92% or less, or 70% or more and 90% or less. Furthermore, the width W11 is approximately twice the width W12. This ratio may be 0.5 times or more and 10 times or less, 1 time or more and 5 times or less, or 1.5 times or more and 3 times or less.
[0020] As shown in FIG. 6, the thickness of the plate - like portion 420 in the wheel - axis direction is thinner than the thickness of the spoke portion 300 in the wheel - axis direction (Z - axis direction). The thickness of the plate - like portion 420 in the wheel - axis direction is approximately 10% of the thickness of the spoke portion 300 in the wheel - axis direction. Note that this ratio may be in the range of 3% or more and 50% or less, may be 5% or more and 30% or less, or may be 7% or more and 20% or less. The base end portion of the plate - like portion 420 is in contact with the outer side of the wheel rim portion 20. The plate - like portion 420 extends from the wheel rim portion 20 toward the hub attachment portion 200. The plate - like portion 420 is gradually curved from the base end portion toward the tip end portion with respect to the wheel - axis direction. The base - end side of the plate - like portion 420 is located on the outer side of the wheel disk portion 30, and the tip - end side of the plate - like portion 420 is located on the inner side of the wheel disk portion 30.
[0021] As shown in FIGS. 4 to 6, the pair of reinforcing portions 440 are arranged in the radial direction at both ends in the circumferential direction of the plate - like portion 420, respectively. Each reinforcing portion 440 extends in the wheel - axis direction from the inner - side surface of the plate - like portion 420. The reinforcing portion 440 is a plate - like member. The reinforcing portion 440 has a substantially triangular shape with the base end portion of the extending portion 400 as the base and the tip end portion as the apex. The width of the reinforcing portion 440 in the wheel - axis direction (the base of the substantially triangular shape) is the same (about 100%) as the width of the spoke portion 300 in the wheel - axis direction at the base - end side of the extending portion 400. Note that this ratio may be in the range of 30% or more and 300% or less, may be 50% or more and 200% or less, or may be 70% or more and 150% or less with respect to the width of the spoke portion 300 in the wheel - axis direction. The width of the reinforcing portion 440 in the wheel - axis direction gradually narrows from the base - end side to the tip - end side of the extending portion 400 (see FIG. 6). The thickness of the reinforcing portion 440 in the circumferential direction is substantially the same as the thickness of the plate - like portion 420 in the wheel - axis direction.
[0022] The opening C is the portion of the wheel disc portion 30 that opens in the direction of the wheel axis of the wheel 10. The opening C is composed of a first opening C1 and a second opening C2. In this embodiment, the opening C of the wheel disc portion 30 is approximately 60% of the outer surface (design surface) compared to the case where there is no extension portion 400. That is, the extension portion 400 shields approximately 40% of the opening C. The ratio of the opening C of the wheel disc portion 30 may be 20% or more and 95% or less, 30% or more and 90% or less, or 50% or more and 75% or less.
[0023] Figure 7 is a perspective view of Figure 4. The inner positional relationship between the spoke portion 300 and the extension portion 400 is such that, as shown in Figure 7, the virtual plane S, which includes the inner surfaces of the adjacent pair of spoke portions 300, coincides with the inner surface 420S of the plate-like portion 420 of the extension portion 400. Specifically, it is as follows: The extension portion 400 is positioned in the first opening C1 between the first spoke portion 500 and the second spoke portion 600, which are adjacent pairs of spoke portions 300, as shown in Figure 7. The line formed on the innermost side (vehicle side) of the side surface of the first spoke portion 500 is auxiliary line L4. The line formed on the innermost side (vehicle side) of the side surface of the second spoke portion 600 is auxiliary line L5. Auxiliary line L4 is an example of the first line. Auxiliary line L5 is an example of the second line. The surface formed by auxiliary lines L4 and L5 is a virtual surface S. The inner surface 420S of the plate-like portion 420 of the extension portion 400 coincides with the virtual surface S. Also, the inner surface 440S of the reinforcing portion 440 coincides with the virtual surface S. In this embodiment, the inner surface of the first spoke portion 500, the inner surface of the second spoke portion 600, the inner surface 420S, and the inner surface 440S are all on the same plane.
[0024] A-2. Manufacturing method of wheel 10: The wheel 10 is manufactured by integrally molding the wheel rim portion 20 and the wheel disc portion 30 using a mold. After integrally molding the wheel 10 in the mold, the inner side of the wheel disc portion 30 is polished. Specifically, the wheel 10 rotates in the circumferential direction of the rotation axis, turning the inner side of the wheel disc portion 30.
[0025] A-3. Effects of this embodiment: Conventional wheels 10 had an extension, which is a flat, plate-like member, placed in a first opening C1 between a pair of adjacent spokes 300. The extension 400 of the wheel 10 in this embodiment has a reinforcing portion 440. The extension 400 extends inward from the wheel 10. The strength of the extension 400 in the wheel 10 of this embodiment is increased compared to the conventional wheel 10. Therefore, even if air flows through the opening C of the wheel 10, the extension 400 of the wheel 10 is less likely to deform. The wheel 10 having the extension 400 of this embodiment restricts the airflow path from the vehicle body side to the outside of the vehicle through the opening C. As a result, the wheel 10 rectifies the airflow through the wheel 10. In this way, the aerodynamics of the wheel 10 of this embodiment are improved. That is, a vehicle equipped with the wheel 10 of this embodiment can reduce air resistance. Furthermore, when the wheel 10 shielded 40% of the opening C with the extension portion 400, the drag coefficient (Cd value) was reduced by approximately 3% compared to when the opening C was not shielded by the extension portion 400.
[0026] Furthermore, the extension portion 400 of this embodiment is composed of a plate-shaped portion 420 and a pair of reinforcing portions 440. Specifically, the extension portion 400 forms a space with the plate-shaped portion 420 and the pair of reinforcing portions 440. With this configuration, the extension portion 400 can adjust the airflow of the wheel 10 with minimal material. Therefore, the extension portion 400 can be made lighter. As a result, the wheel 10 can be made lighter.
[0027] The extension portion 400 is separated from the adjacent pair of spoke portions 300. Therefore, the spoke portions 300 are not affected by stresses related to the extension portion 400. In other words, the extension portion 400 can be designed without considering the strength of the spoke portions 300. Consequently, the design freedom of the extension portion 400 is increased, and the aesthetic design of the wheel disc portion 30 is improved.
[0028] In this embodiment, the wheel 10 comprises a cylindrical wheel rim portion 20, a hub mounting portion 200 attached to the axle hub on the vehicle side, a plurality of spoke portions 300 extending radially from the hub mounting portion 200 and joined to the wheel rim portion 20, and an extension portion 400 positioned in a first opening C1 between at least one pair of adjacent spoke portions 300 in the circumferential direction of the wheel rim portion 20. The extension portion 400 extends from the wheel rim portion 20 toward the hub mounting portion 200 and is separated from both the hub mounting portion 200 and the pair of spoke portions 300. The extension portion 400 has a plate-like portion 420 along the circumferential direction and a reinforcing portion 440 protruding from at least one surface of the plate-like portion 420 and extending in the wheel axis direction of the wheel rim portion 20. With this wheel 10, an extension 400 having a reinforcing portion 440 is positioned in the first opening C1 between a pair of spokes 300, and since the extension 400 is in contact only with the wheel rim 20, the design freedom of the extension 400 is increased. Furthermore, the reinforcing portion 440 helps to suppress deformation of the extension 400 when the vehicle is running.
[0029] In this embodiment, the wheel 10 comprises a cylindrical wheel rim portion 20, a hub mounting portion 200 attached to the axle hub on the vehicle side, a plurality of spoke portions 300 extending radially from the hub mounting portion 200 and joined to the wheel rim portion 20, and an extension portion 400 positioned in a first opening C1 between at least one adjacent pair of spoke portions 300 in the circumferential direction of the wheel rim portion 20. The extension portion 400 extends from the wheel rim portion 20 toward the hub mounting portion 200 and is separated from both the hub mounting portion 200 and the pair of spoke portions 300. The extension portion 400 has a plate-like portion 420 along the circumferential direction. All or part of the vehicle-side surface of the plate-shaped portion 420 lies on the surface of a virtual plane S formed by a first auxiliary line L4, which is the line formed on the vehicle side of the first spoke portion 500 of a pair of spoke portions 300, and a second auxiliary line L5, which is the line formed on the vehicle side of the other second spoke portion 600 of the pair of spoke portions 300. With this wheel 10, the extension portion 400 is positioned in the first opening C1 between the first spoke portion 500 and the second spoke portion 600 adjacent to the first spoke portion 500, and since the extension portion 400 is in contact only with the wheel rim portion 20, the design freedom of the extension portion 400 is increased. Furthermore, productivity is improved because all or part of the vehicle-side surface of the extension portion 400 substantially coincides with the virtual plane S. Specifically, with the wheel 10 of this embodiment, burrs can be removed simultaneously during the turning process on the inner side of the wheel 10. In other words, the wheel 10 of this embodiment improves productivity.
[0030] B. Variations: The technologies disclosed herein are not limited to the embodiments described above and can be modified in various forms without departing from their essence, for example, the following modifications are possible.
[0031] In the above embodiment, the wheel 10 is a one-piece type wheel in which the wheel rim portion 20 and the wheel disc portion 30 are integrally molded, but it is not limited to this. The wheel 10 may also be a two-piece type in which the wheel rim portion 20 and the wheel disc portion 30 are molded separately and then integrated. Also, in the above embodiment, the shape of the hub mounting portion 200 was a roughly regular pentagon, but it is not limited to this shape. For example, it may be circular. Also, the hub mounting portion 200 has five bolt holes h2, but it may have four or six or more.
[0032] In the above embodiment, there are five spokes 300 on the wheel 10, but the number is not limited to five. There may be four, or six or more. Also, the spokes 300 have a first branch 320, a second branch 340, and a third branch 360, but the configuration is not limited to this. For example, there may be two branch sections, four or more, or no branching at all. Furthermore, the first branch 320, the second branch 340, and the third branch 360 are rod-shaped, but they do not have to be rod-shaped. Also, the circumferential cross-section of each branch is approximately trapezoidal, but it does not have to be trapezoidal. Specifically, the circumferential cross-section of each branch may be rectangular or circular.
[0033] In the above embodiment, the spoke portion 300 has two second openings C2 in the circumferential direction, but is not limited to this. The spoke portion 300 does not have to form second openings C2, or it may have three or more second openings C2. Also, the spoke portion 300 may have multiple second openings C2 arranged radially rather than circumferentially.
[0034] In the above embodiment, the extension portion 400 has a symmetrical trapezoidal shape with the wheel rim portion 20 as the lower base when viewed from the front, but it is not limited to this shape. For example, it may be asymmetrical, rectangular, or have a curved shape.
[0035] In the above embodiment, the base end of the plate-shaped portion 420 of the extension 400 is on the outer side of the wheel disc portion 30, and the tip of the plate-shaped portion 420 is located on the inner side of the wheel disc portion 30, but the embodiment is not limited to this. For example, the tip of the plate-shaped portion 420 may be located on the outer side of the wheel disc portion 30. In this case, a reinforcing portion 440 extending axially from the inner side may be further arranged at the tip of the plate-shaped portion 420.
[0036] In the above embodiment, the pair of reinforcing portions 440 are located at both ends of the plate-shaped portion 420 in the circumferential direction, but are not limited to this. For example, the reinforcing portion 440 may be located in the center of the plate-shaped portion 420 in the circumferential direction.
[0037] In the above embodiment, the inner surface 420S of the plate-shaped portion 420 of the extension portion 400 and the inner surface 440S of the reinforcing portion 440 all coincide with the virtual surface S, but it is not necessary for all surfaces of the inner surfaces 420S and 440S to coincide with the virtual surface S. For example, it is sufficient if only a part of the inner surface 440S coincides with the virtual surface S. Also, it is sufficient if the virtual surface formed by the inner surface of the first spoke portion 500 and the inner surface of the second spoke portion 600 coincides with all or part of the inner surfaces 420S and 440S. Furthermore, the virtual surface S may be a curved surface by the lathe of the wheel 10. That is, if the inner surface of the first spoke portion 500 and the inner surface of the second spoke portion 600 form the same curved surface, it is sufficient if that curved surface coincides with all or part of the inner surfaces 420S and 440S.
[0038] In the above embodiment, the extension portion 400 is positioned in the first opening C1 of an adjacent pair of spoke portions 300, but is not limited to this location. For example, the extension portion 400 may be positioned in a second opening C2 formed in the spoke portion 300. Also, the extension portion 400 may be positioned in either the first opening C1 or the second opening C2. Furthermore, although one extension portion 400 is positioned in the first opening C1, the number of extension portions 400 that can be positioned is not limited. For example, two or more extension portions 400 may be positioned in the first opening C1. Also, in the above embodiment, the extension portion 400 is positioned in all of the first openings C1 formed in the wheel disc portion 30, but does not need to be positioned in all of them. [Explanation of symbols]
[0039] 10: Wheel 20: Wheel rim 30: Wheel disc 100: Outer flange 200: Hub mounting 300: Spoke 320: First branch 340: Second branch 360: Third branch 400: Extension 420: Plate-like section 420S: Inner surface 440: Reinforcement section 440S: Inner surface 500: First spoke 600: Second spoke C1: First opening C2: Second opening C: Opening S: Virtual surface h1: Hub hole h2: Bolt hole
Claims
1. Vehicle wheels, A cylindrical wheel rim section, A hub mounting part that is attached to the axle hub on the vehicle side, Multiple spokes extending radially from the hub mounting portion and joined to the wheel rim portion, The wheel rim portion comprises an extension portion located between at least one pair of adjacent spoke portions among the plurality of spoke portions in the circumferential direction, The extension portion is, Extending from the wheel rim portion toward the hub mounting portion, and being separate from both the hub mounting portion and the pair of spoke portions, the plate-shaped portion along the circumferential direction, The plate-like portion has a reinforcing portion that protrudes from at least one surface of the plate-like portion and extends in the axial direction of the wheel rim portion, Vehicle wheels.
2. Vehicle wheels, A cylindrical wheel rim section, A hub mounting part that is attached to the axle hub on the vehicle side, Multiple spokes extending radially from the hub mounting portion and joined to the wheel rim portion, The wheel rim portion comprises an extension portion located between at least one pair of adjacent spoke portions among the plurality of spoke portions in the circumferential direction, The extension portion is, It extends from the wheel rim portion toward the hub mounting portion, and is separated from both the hub mounting portion and the pair of spoke portions, and has a plate-like portion along the circumferential direction, The entire or a portion of the plate-like portion's vehicle-side surface lies on the surface of a virtual plane formed by a first line formed on the vehicle side of the first spoke of the pair of spokes and a second line formed on the vehicle side of the other second spoke of the pair of spokes. Vehicle wheels.