JP2020032811A - Vehicular wheel - Google Patents

Abstract

A vehicle wheel having spokes is provided, which enhances the design while ensuring the rigidity of the wheel. A vehicle wheel (1) includes a wheel body (2) having a disc portion (4), a rim portion (5) and spoke portions (6), and a cap (3) attached to the disc portion (4) of the wheel body (2). Since the outer surface of the spoke portion 6 in the axle direction is positioned further outward in the axle direction than the outer surface of the disk portion 4 in the axle direction, the rigidity is improved. The cap 3 is provided with spoke extensions 17 that extend radially inwardly from the spokes 6 . Between the axle-side end portion of the spoke portion 6 and the spoke extension portion 17 and the axle-side end portion and the spoke extension portion 17 of the other spoke portion 6 adjacent in the circumferential direction, the outer surface in the axle direction is a web. A recessed connecting portion 20 having a recessed shape is provided. The spoke extension portions 17 and the concave connecting portions 20 make the spoke look longer, improving the design. [Selection drawing] Fig. 1

Description

  The present disclosure is directed to a vehicle including a disc body disposed around an axle, a rim to which a tire is attached, and a wheel body having a spoke that connects between the disc and the rim, and a cap attached to the disc. About the wheel.

  Some wheels have a disc portion arranged around an axle, a rim portion to which a tire is attached, and a spoke portion connecting the disc portion and the rim portion. In such a wheel, a bolt provided in the hub is inserted into a fastening hole provided in the disk portion and fastened with a nut, or a bolt is inserted into a fastening hole provided in the disk portion to connect to the hub. It is attached to the hub by being fastened to the provided nut portion. In such a wheel, a structure is known in which a cap is attached to a disk portion to hide a bolt and / or a nut to improve designability (for example, Patent Document 1).

  The wheel described in Patent Literature 1 has a recess for receiving the head of the bolt on the outside of the disc portion in the axle direction. The cap is attached to the disk so as to cover the concave portion and the ring-shaped peripheral wall forming the concave portion.

JP-A-62-91301

  There is a demand for improved design of wheels. In general, the design of a wheel having a spoke portion is enhanced by increasing the length of the spoke. One of the means for increasing the length of the spokes is to reduce the outer diameter of the peripheral wall forming the recess of the disk portion. However, since the outer diameter of the peripheral wall forming the recess corresponds to the inner diameter determined by the position of the fastening hole, it is difficult to reduce the outer diameter by reducing the diameter of the entire peripheral wall. Further, when the thickness of the peripheral wall is reduced to reduce the outer diameter of the peripheral wall, the rigidity of the wheel is reduced.

  In view of such a problem, an object of the present invention is to improve the design of a vehicle wheel having a spoke portion while securing its rigidity.

  A vehicle wheel according to at least some embodiments of the present invention has a disc-like shape centered on an axle, a recess (9) recessed inward in the axle direction at the center, and a bottom wall of the recess. (7) a disk portion (4) to be attached to a hub (12), having a plurality of fastening holes (11) formed therethrough; an annular rim portion (5) to which a tire is to be attached; A vehicle wheel (1) including a plurality of spokes (6) for connecting a disk part and the rim part to each other, and a cap (3) attached to the disk part so as to cover the concave part of the disk part. The spoke portions adjacent to each other are connected to each other by a spoke-side connection portion (19) having a concave surface facing outward in the axle direction at an inner end side in a radial direction, and the cap is connected to the spoke. A plurality of spoke extensions (17) each having a shape in which a spoke portion is extended inward in the radial direction, and a space between the spoke extensions adjacent to each other in the axle direction continuous with the corresponding spoke-side connection portion. A cap-side connecting portion (18) having a concave surface facing outward is provided.

  The fact that the spoke portion is continuous with the cap means that the spoke portion protrudes outward in the axle direction from the disk portion covered by the cap, and therefore, the rigidity of the wheel is improved. In addition, since the cap has the spoke extension, the spoke appears to be extended in the radial direction, and the design is improved.

  At least some embodiments of the present invention are characterized in that, in the above-described configuration, the periphery of the recess has a depth greater than the radially inner portion of the recess.

  According to this configuration, by increasing the depth of the peripheral edge of the concave portion and increasing the thickness of the central portion of the bottom wall, it is possible to increase the rigidity of the wheel while securing the length necessary for locking the cap. it can.

  In at least some embodiments of the present invention, in the above-described configuration, the cap is provided on a back surface side (an inner side in the axle direction), and is provided with a plurality of engaging portions ( 22), and a plurality of positioning portions (23) provided near the cap-side connecting portion on the rear surface side and abutting on the outer surface in the axle direction of the peripheral wall (8) defining the inner peripheral surface. The radially inner end surface of the spoke portion constitutes a cap mating portion (21) with which the outer peripheral edge of the cap abuts.

  According to this configuration, the positioning rigidity is arranged in the vicinity of the cap-side connecting portion having high rigidity in the cap, so that the rigidity of mounting the cap is improved.

  At least some embodiments of the present invention, in the above configuration, wherein a notch (25) for removing the cap from the disc portion is provided at the radial outer edge of at least one spoke extension. The positioning portion includes a portion disposed in the center in the circumferential direction of the cap-side connecting portion, and a portion disposed near the ridge line of the cap-side connecting portion. Wherein the positioning portion is disposed near the ridge line.

  According to this configuration, the relatively rigid portions such as the cap-side connecting portion and the positioning portion are not arranged at the same location in a side view, but are shifted in the circumferential direction around the notch, When the cap is removed, the periphery of the notch in the cap is relatively easily deformed, and the cap is easily removed.

  At least some embodiments of the present invention are directed to the above configuration, wherein the notch portion (25) for changing the configuration of the notch portion to remove the cap from the disc portion includes at least one of the spoke extension portions. And at least one of the locking portions is provided near the notch portion.

  According to this configuration, since the locking portion is provided in the vicinity of the notch portion, the locking portion can be directly pushed when a tool is inserted for removing the cap, and the locking portion is located near the notch. Since the rigidity is higher than that, it is easy to remove the cap with a tool.

  According to at least some embodiments of the present invention, in the above-described configuration, the notch portion is provided only at one position, and the plurality of locking portions are arranged on a back surface of the cap. Each is arranged in the vicinity of the cap-side connecting portion, except for those arranged in the vicinity of the notch and in the vicinity of a position shifted by 180 ° in the circumferential direction from the notch. And

  According to this configuration, the vicinity of the notch portion can be relatively largely deformed and the cap can be easily removed, and in other portions, the locking portion is disposed near the rigid rigid cap side connection portion. Mounting rigidity is improved.

  In at least some embodiments of the present invention, in the above-described configuration having a positioning portion, an even number of the positioning portions are arranged, and each of the positioning portions is arranged so as to be shifted by 180 ° in a circumferential direction. The positioning portion has a substantially constant circumferential distance from each other, and reinforcing ribs extending inward in the radial direction from each of the positioning portions are provided on the back surface of the cap. It is characterized by the following.

  According to this configuration, the positioning portions arranged at 180 ° in the circumferential direction can prevent the cap from rattling in the axle direction and the wheel body and the cap from being displaced in the axle direction. The ribs increase the rigidity of the cap.

  In at least some embodiments of the present invention, in the above-described configuration having a locking portion and a positioning portion, an even number of the locking portions are arranged, and each of the locking portions is shifted by 180 ° in the circumferential direction. And each of the locking portions is disposed on an angle bisector formed by two lines passing through each of the two positioning portions adjacent to each other and the axle. It is characterized by.

  According to this configuration, it is possible to prevent the cap from being displaced in a side view when the cap and the wheel main body are attached to each other by the locking portions that are arranged to be displaced from each other by 180 ° in the circumferential direction. Further, by disposing the locking portions on the bisector of the angle formed by the adjacent positioning portions, it is possible to prevent the locking load from shifting in the axle direction, and prevent the position from shifting when viewed from the front.

  In at least some embodiments of the present invention, in any one of the above-described configurations, the spoke portion radially extends from the axle toward the rim portion in a side view, and a surface of the spoke-side connection portion includes the spoke. The spokes are smoothly connected to the surfaces of the spoke portions, and the fastening holes are located on bisectors of the angles formed by the extension lines of the spoke portions adjacent to each other.

  According to this configuration, the vertical force acting between the hub and the disk portion can be equally shared between the two spoke portions, and the force applied to the wheel body can be efficiently dispersed.

  According to at least some embodiments of the present invention, in the above-described configuration, the spokes are arranged n times symmetrically about the axle, where n is the number thereof, and each of the spokes extends in the radial direction. It is bilaterally symmetrical in a side view with respect to a center line, and the number of the fastening holes and the number of the spokes are five and ten, or four and eight, respectively.

  According to this configuration, by arranging eight or ten spoke portions such that the positions are on bisectors with respect to four or five bolts and nuts, respectively, it is possible to efficiently perform the vertical direction. Can be distributed.

  In at least some embodiments of the present invention, in any of the above-described configurations, the spoke portion has a shape in which a width of the radial inner end portion is larger than a width of the radial outer end portion in a side view. A trapezoidal shape, characterized in that a lightening portion which is formed along the center line in the radial direction and which is substantially rectangular in side view is formed on the inner surface of the spoke portion in the axle direction. I do.

  According to this configuration, in the spoke portion, the outer end side (rim side) in the radial direction can be made thinner in strength than the inner end side (disk side) in the radial direction, so that the shape of the lightening portion is rectangular. This can reduce the weight while securing the strength.

  In at least some embodiments of the present invention, in any one of the above-described configurations, the rim portion includes a first bead seat portion (13) located outside in the axle direction and a first bead seat portion (13) located inside in the axle direction. A second bead seat portion (14), and an intermediate portion (15) connecting the first bead seat portion and the second bead seat portion, wherein the first bead seat portion is thicker than the intermediate portion. It is characterized by being.

  According to this configuration, by making the first bead seat portion thick, vibration of the wheel when the wheel rotates can be reduced, and noise and vibration can be suppressed.

  At least some embodiments of the present invention are characterized in that, in the above configuration, the first bead seat portion is smoothly connected to the intermediate portion on the radially inner surface of the rim portion. I do.

  According to this configuration, the air flow is not disturbed, and the aerodynamic performance and the brake cooling performance can be improved.

  ADVANTAGE OF THE INVENTION According to this invention, in the wheel which has a spoke part, the design property can be improved, ensuring the rigidity.

Perspective view of a wheel according to an embodiment FIG. 2 is a side view of the wheel body according to the embodiment as viewed from the outside in the axle direction. FIG. 2 is a side view of the wheel body according to the embodiment viewed from the inside in the axle direction. IV-IV sectional view in FIG. VV sectional view in FIG. Side view of the cap according to the embodiment viewed from the outside in the axle direction VII-VII sectional view in FIG. VIII-VIII sectional view in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description, front and rear, left and right, and up and down directions follow the direction of the vehicle.

  FIG. 1 is a perspective view of a vehicle wheel 1 according to an embodiment, FIGS. 2 and 3 are side views of the wheel body 2 as viewed from outside and inside in the axle direction, and FIG. It is sectional drawing which shows the state attached to the vehicle. As shown in FIGS. 1 to 4, the vehicle wheel 1 includes a wheel body 2 and a cap 3 that is detachably attached to a center portion of the wheel body 2 on the outside in the axle direction. The wheel body 2 includes a disk portion 4 having a disk shape around the axle, an annular rim portion 5 on which a tire is to be mounted, and a plurality of spoke portions 6 connecting the disk portion 4 and the rim portion 5 to each other. Is provided.

  The disk portion 4 includes a bottom wall 7 having a substantially circular shape in a side view, and a peripheral wall 8 extending outward from the outer peripheral edge of the bottom wall 7 in the axle direction. It has a concave portion 9 defined by a certain bottom surface 7a and an inner peripheral surface 8a of the peripheral wall 8. The bottom wall 7 is provided with a center hole 10 penetrating the center in a side view, and a plurality of fastening holes 11 penetrating in the axle direction radially outward from the center hole 10. The plurality of fastening holes 11 are arranged at equal intervals in the circumferential direction on a common circumference concentric with the center hole 10. The shaft of the hub 12 of the vehicle body fits into the center hole 10, and a bolt (not shown) provided in the hub 12 is inserted into the fastening hole 11 and fastened to a nut (not shown). Alternatively, the wheel main body 2 is fixed to the hub 12 by inserting a bolt (not shown) into the fastening hole 11 and fastening it to a nut (not shown) provided on the hub 12.

  The hub mounting surface 7b inside the bottom wall 7 in the axle direction is a plane substantially orthogonal to the axle. The bottom surface 7a is inclined so that it goes inward in the axle direction as it goes inward in the radial direction with respect to a plane perpendicular to the axle. That is, the thickness of the bottom wall 7 increases toward the center in the radial direction around the axle. Since the bottom surface 7a is inclined as described above, the peripheral edge of the concave portion 9 has a greater depth than the radially inner portion of the concave portion 9, so that the peripheral edge portion of the cap 3 can be inserted deeply into the concave portion 9. In addition, since the thickness of the portion fixed to the hub 12 is increased, the rigidity of the wheel body 2 is improved. The hub mounting surface 7b is provided with a hollow 7c between the fastening holes 11.

  FIG. 5 is an enlarged sectional view of the rim 5 taken along a plane passing through the axle. The rim portion 5 is provided between the first bead seat portion 13 located outside in the axle direction, the second bead seat portion 14 located inside in the axle direction, and the first bead seat portion 13 and the second bead seat portion 14. And an intermediate portion 15 for connecting the two. A bead (not shown) of the tire is in close contact with the outer surface of the first bead seat portion 13 and the second bead seat portion 14 in the radial direction. Since the first bead seat portion 13 is thicker than the intermediate portion 15, vibration when the vehicle wheel 1 rotates is reduced, and noise vibration performance is improved. Further, since the inner surface in the radial direction of the first bead seat portion 13 is smoothly connected to the inner surface in the radial direction of the intermediate portion 15, the flow of air is not disturbed during traveling, and the aerodynamic performance and The cooling performance of the brake is improved.

  As shown in FIGS. 1 to 4, ten spoke portions 6 extend radially outward from the disk portion 4 and are connected to the first bead seat portion 13 of the rim portion 5. The ten spokes 6 are arranged symmetrically ten times around the axle. That is, the angle formed by the radially extending lines of the spoke portions 6 adjacent to each other is equal to 36 °. The number of the spokes 6 may be changed. In this case, assuming that the number of the spokes 6 is n, the n spokes are arranged symmetrically n times around the axle. The number of the spokes 6 is preferably an even number, and the spokes 6 adjacent to each other form a set, and the center of the fastening hole 11 is located on a bisector of an angle formed by an extension of the two spokes 6. Be placed. Therefore, the number of the fastening holes 11 is n / 2. If there are ten spokes 6, there are five fastening holes 11, and if there are eight spokes 6, there are four fastening holes 11. By arranging the fastening holes 11 in this manner, the vertical load applied to the wheel body 2 can be dispersed.

  Each spoke 6 has a symmetrical shape with respect to a center line extending in the radial direction in a side view. The outer surface of the spoke portion 6 in the axle direction is located outside the outer surface of the disk portion 4 in the axle direction in the axle direction. More specifically, the outer surface of the spoke portion 6 in the axle direction projects radially outward from the top surface of the peripheral wall 8 of the disk portion 4 at the inner end in the radial direction, toward the outer side in the radial direction. With a slight inward in the axle direction. As described above, since the spokes 6 protrude outward in the axle direction, the connection rigidity between the spokes 6 and the disk 4 is improved.

  Each of the spokes 6 has an isosceles trapezoidal shape in which a width of an inner end in a radial direction is larger than a width of an outer end in a side view, and an inner surface of each spoke 6 in an axle direction is provided. The lightening portion 16 is recessed. The lightening portion 16 is formed along the center line in the radial direction, and has a substantially rectangular shape in a side view. Since the spoke portion 6 can be thinner in strength on the rim portion 5 side than in the disk portion 4 side, by making the shape of the lightening portion 16 rectangular, the strength can be ensured and the weight can be reduced. In the transverse section orthogonal to the radial direction, it is preferable that the spokes 6 have an equilateral trapezoidal shape in which the inner width in the axle direction is larger than the outer width in the axle direction. In the transverse section of the spoke portion 6 having the shape of a trapezoid, the bottom portion in the axle direction is depressed by the lightening portion 16.

  FIG. 6 is a side view of the cap 3 as viewed from the outside in the axle direction, and FIGS. 7 and 8 are a VII-VII sectional view and a VIII-VIII sectional view in FIG. 6, respectively. As shown in FIGS. 6 to 8, the cap 3 has a substantially circular shape in a side view, and the radius thereof substantially matches the radius of the disk portion 4.

  The surface near the periphery of the cap 3 (the outer surface in the axle direction) is provided with irregularities, and the convex portion extends inward in the radial direction from the surface of the spoke portion 6 seen from the outside in the axle direction. To form a spoke extension portion 17, which is smoothly connected to the central portion of the surface of the cap 3. The concave portion forms the surface of the cap-side connecting portion 18 which is separated from the surface of the spoke extension portion 17 and the central portion of the surface of the cap 3 by a curved ridge such as an arc or a parabola. The inner ends of the spokes 6 adjacent to each other in the radial direction are connected by a spoke-side connection portion 19 whose surface is recessed inward in the axle direction from the spokes 6. The concave surface of the spoke-side connecting portion 19 is smoothly connected to the surface of the spoke portion 6. The concave surface of the spoke-side connecting portion 19 is smoothly connected to the concave surface of the cap-side connecting portion 18, and the concave connecting portion 20 formed by the cap-side connecting portion 18 and the spoke-side connecting portion 19 is formed. The surface is symmetrical in a side view with respect to a center line extending in the radial direction. In addition, it is preferable that the surface of the concave connecting portion 20 has a web-like concave shape, that is, a concave shape in which the width in the circumferential direction increases and the depth in the axle direction increases toward the outside in the radial direction. Since the spoke portion 6 is connected to the spoke extension portion 17 and the surface of the concave connecting portion 20 is concave, the spokes appear to be extended toward the axle, and the design is improved. Since the concave surface of the spoke-side connecting portion 19 is smoothly connected to the surface of the spoke portion 6, a vertical force is distributed to the spoke portions 6 adjacent to each other.

  The peripheral edge of the cap 3 abuts on a cap mating portion 21 formed by a radially inner end surface of the spoke portion 6 and the spoke-side connecting portion 19. In addition, the cap 3 has a locking portion 22 that extends inward in the axle direction from the back surface (the inner surface in the axle direction) near the peripheral edge, and the free end bulges outward in the radial direction. The locking portion 22 is locked to the inner peripheral surface 8a of the peripheral wall 8 formed so as to be depressed outward in the radial direction. Further, a plurality of positioning portions 23 are provided so as to protrude inward in the axle direction from the back surface near the peripheral edge of the cap 3, and a positioning portion 24 formed by the top surface (the outer surface in the axle direction) of the peripheral wall 8. Abut. The projecting length of the positioning portion 23 is shorter than the extension length of the locking portion 22. When the peripheral edge of the cap 3 abuts on the cap mating portion 21, the radial position of the cap 3 is determined, and the locking portion 22 is locked on the inner peripheral surface 8 a, thereby fixing the cap 3 to the wheel body 2. When the positioning portion 23 contacts the positioning portion 24, the cap 3 does not sink inward in the axle direction even if the cap 3 is pushed inward in the axle direction, and the locking portion 22 moves inward in the axle direction from the inner peripheral surface 8a. , The position of the cap 3 in the axle direction is stabilized. In addition, in order to improve the mounting rigidity of the cap 3, the positioning portion 23 is provided in the cap 3 in the vicinity of the highly rigid cap-side connecting portion 18.

  A notch 25 for removing the cap 3 from the wheel body 2 is provided at a radially outer edge of one spoke extension 17. The positioning portion 23 includes a portion arranged at the center in the circumferential direction of the cap-side connecting portion 18 and a portion arranged near the ridgeline so as to be shifted from the center of the cap-side connecting portion 18 in the circumferential direction. Here, the positioning portions 23 on both sides of the notch 25 in the circumferential direction are located near the ridge line of the cap-side connecting portion 18 adjacent to the notch 25 and on the opposite side in the circumferential direction from the positioning portion 23. Have been. Arranging relatively high rigidity portions of the cap-side connecting portion 18 and the positioning portion 23 at the same position in a side view is preferable for stabilizing the cap 3 with respect to the wheel body 2. However, in order to insert a tool such as a flathead screwdriver into the notch 25 and remove the cap 3 from the wheel body 2, it is preferable that the periphery of the notch 25 be deformed over a wide range. Therefore, in the vicinity of the notch 25, the rigidity of the cap-side connecting portion 18 and the positioning portion 23 are relatively shifted from each other in the circumferential direction, instead of being overlapped in a side view, thereby suppressing improvement in rigidity. When the cap 3 is removed, the cap 3 can be deformed over a wide area around the notch 25.

  One of the locking portions 22 is provided near the notch 25, for example, inside the notch 25 in the radial direction. For this reason, when a tool is inserted to remove the cap 3, the locking portion 22 can be directly pushed, and the removal becomes easy. In addition, since the locking portion 22 has higher rigidity than the periphery, it can be easily removed by a tool. Further, the notch 25 may be provided in the plurality of spoke extension portions 17. However, when the notch 25 is provided only at one position, one of the locking portions 22 is disposed near the notch 25. The other one is arranged near the radially opposite part of the notch 25, and the remaining locking part 22 is arranged near the cap-side connecting part 18. Except for the notch 25 which needs to be deformed when removing the cap 3 and the portion on the opposite side in the radial direction, the locking portion 22 is arranged in the cap-side connecting portion 18 having high surface rigidity, so that the cap 3, the mounting rigidity is improved.

  An even number of the locking portions 22 are arranged, and some of the locking portions 22 are arranged to be shifted by 180 ° in the circumferential direction. For this reason, when the cap 3 is attached to the wheel main body 2, a positional shift in a side view is prevented. Further, each of the locking portions 22 is disposed on an angle bisector formed by two lines passing through each of the two positioning portions 23 adjacent to each other and the axle. For this reason, the locking part 22 and the positioning part 23 are arranged in a well-balanced manner, and the positional deviation in the front view is prevented.

  An even number of the positioning portions 23 are arranged, and some of the positioning portions 23 are arranged to be shifted by 180 ° in the circumferential direction. The positioning portions 23 have a substantially constant circumferential interval. Reinforcing ribs 26 are provided on the back surface of the cap 3 and extend inward in the radial direction from each of the positioning portions 23. The positioning portion 23 is arranged rotationally symmetrically with respect to the axle, and the rigidity of the cap 3 is improved by the reinforcing rib 26. It can be prevented from shifting in the direction.

  As described above, the rigidity of the wheel body 2 is improved by protruding the spoke portions 6 outward in the axle direction from the disk portion 4, and the surfaces of the wheel body 2 and the cap 3 are formed into a continuous shape to form the concave connecting portion 20. By providing, the spokes appear to be longer and the design is improved.

  Although the description of the specific embodiments has been completed above, the present invention can be widely modified without being limited to the above embodiments. The concave portion may have another shape such as a regular polygon instead of a circular shape in a side view.

1: vehicle wheel 2: wheel body 3: cap 4: disk portion 5: rim portion 6: spoke portion 7: bottom wall 8: peripheral wall 9: concave portion 10: center hole 11: fastening hole 12: hub 13: first bead. Seat portion 14: Second bead seat portion 15: Intermediate portion 16: Lightening portion 17: Spoke extension portion 18: Cap-side connection portion 19: Spoke-side connection portion 20: Recessed connection portion 21: Cap mating portion 22: Locking portion 23: positioning part 24: positioning part 25: notch part 26: reinforcing rib

Claims (13)

A disk portion to be attached to a hub, which has a disk shape centered on the axle, and has a recess formed at the center toward the inside in the axle direction and a plurality of fastening holes formed through the bottom wall of the recess. When,
An annular rim to which the tire should be attached,
A plurality of spokes that couple the disk and the rim together;
A vehicle wheel comprising: a cap attached to the disc portion so as to cover the concave portion of the disc portion,
The spoke portions adjacent to each other are connected to each other by a spoke-side connection portion having a concave surface facing outward in the axle direction on the inner end side in the radial direction,
The cap includes a plurality of spoke extensions having a shape obtained by extending the spoke portion inward in the radial direction,
The vehicle wheel according to claim 1, wherein the spoke extension portions adjacent to each other form a cap-side connection portion having a concave surface facing outward in the axle direction that is continuous with the corresponding spoke-side connection portion. The vehicle wheel according to claim 1,
The vehicle wheel according to claim 1, wherein a peripheral edge of the concave portion has a greater depth than an inner portion of the concave portion in the radial direction. The vehicle wheel according to claim 2,
A plurality of locking portions provided on the back surface side for locking to the inner peripheral surface of the concave portion; and a peripheral wall provided near the cap-side connecting portion on the rear surface side to define the inner peripheral surface. A plurality of positioning portions that abut against the outer surface in the axle direction,
The vehicle wheel according to claim 1, wherein the inner end surface of the spoke portion in the radial direction forms a cap mating portion with which an outer peripheral edge of the cap abuts. The vehicle wheel according to claim 3,
A notch for removing the cap from the disc portion is provided at the radially outer edge of at least one of the spoke extensions;
The positioning portion has a portion disposed in the center in the circumferential direction of the cap-side connecting portion and a portion disposed near the ridgeline of the cap-side connecting portion, and is located on both sides in the circumferential direction of the cutout portion. The vehicle wheel, wherein the positioning portion is disposed near the ridge line. The vehicle wheel according to claim 3,
A notch for removing the cap from the disc portion is provided at the radially outer edge of at least one of the spoke extensions;
A vehicle wheel, wherein at least one of the locking portions is provided near the notch. The vehicle wheel according to claim 5,
The notch is provided only in one place,
The plurality of locking portions are arranged on the back surface of the cap,
Each of the locking portions is arranged near the cap-side connecting portion, except for those arranged near the notch portion and near a position shifted by 180 ° in the circumferential direction from the notch portion. A vehicle wheel. The vehicle wheel according to any one of claims 3 to 6,
An even number of the positioning portions are arranged, and each of the positioning portions includes one that is arranged to be shifted by 180 ° in the circumferential direction,
The positioning portion has a substantially constant circumferential interval between each other,
A vehicle wheel, wherein a reinforcing rib is provided on a rear surface of the cap to extend inward in the radial direction from each of the positioning portions. The vehicle wheel according to any one of claims 3 to 7,
An even number of the locking portions are arranged, and each of the locking portions includes one that is arranged to be shifted by 180 ° in the circumferential direction.
A vehicle wheel, wherein each of the locking portions is disposed on a bisector of an angle formed by two lines passing through each of the two positioning portions adjacent to each other and the axle. The vehicle wheel according to any one of claims 1 to 8,
The spoke portion radially extends from the axle toward the rim portion in a side view,
The surface of the spoke-side connecting portion is smoothly connected to the surface of the spoke portion,
The vehicle wheel according to claim 1, wherein the fastening holes are located on bisectors of angles formed by extensions of the spoke portions adjacent to each other. The vehicle wheel according to claim 9,
The spokes are arranged symmetrically n times around the axle, where n is the number of the spokes,
Each of the spoke portions is bilaterally symmetrical in a side view with respect to the center line extending in the radial direction,
The vehicle wheel according to claim 1, wherein the number of the fastening holes and the number of the spokes are five and ten, or four and eight, respectively. The vehicle wheel according to any one of claims 1 to 10,
The spoke portion has, in a side view, a substantially trapezoidal shape in which the width of the inner end in the radial direction is larger than the width of the outer end in the radial direction,
A wheel for a vehicle, wherein a lightening portion formed along the center line in the radial direction and having a substantially rectangular shape in a side view is formed on an inner surface of the spoke portion in the axle direction. The vehicle wheel according to any one of claims 1 to 11, wherein the rim portion includes a first bead seat portion located outside the axle direction and a second bead seat portion located inside the axle direction. And an intermediate portion connecting the first bead seat portion and the second bead seat portion, wherein the first bead seat portion is thicker than the intermediate portion. . 13. The vehicle wheel according to claim 12, wherein the first bead seat portion is smoothly connected to the intermediate portion on the radially inner surface of the rim portion.

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