Abstract: A wheel for vehicle comprising: a rim 2 having a drop portion; and a disk 10 formed integrally from a plate material, the rim and the disk being welded together, wherein the disk has: a hub mounting portion 10a; a plurality of spokes 10b radially extending from the hub mounting portion toward an outer periphery of the disk; and a ring-shaped disk flange 10c that is connected to the spokes through a curved-surface connecting portion R that is formed by bending the spokes at an outer circumferential end thereof in a wheel axial direction, the disk flange extends in the wheel axial direction, and a decorative hole 20 is defined by the adjacent spokes, the hub mounting portion, and the disk flange, and a part that faces a distal end 12 of the spoke in a fitting area between an inner circumferential surface of the rim and an outer circumferential surface of the disk flange is welded.

Abstract: A method comprising: a step of preforming a plurality of bulging portions on a substantially circular plate blank, the bulging portions being located concentrically and circumferentially outward of a bolt hole, each of the bulging portions being a base of a reinforcing portion of a spoke; a step of forming a plurality of prototypical decorative holes on the respective bulging portions to form a prototypically-shaped spoke between the adjacent prototypical decorative holes; a step of forming a disk flange by bending an outer circumferential portion of the plate blank, on which the prototypical decorative holes are formed, at a right angle to be substantially parallel to a wheel axial direction, so that an outer periphery of a resultant decorative hole forms an upper end edge of the disk flange; and a step of forming the spoke by providing the prototypically-shaped spoke with the reinforcing portion.

Abstract: A wheel for vehicle comprising: a rim 2 having a drop portion; and a disk 10 formed integrally from a plate material, the rim and the disk being welded together, wherein the disk has: a hub mounting portion 10a; a plurality of spokes 10b radially extending from the hub mounting portion toward an outer periphery of the disk; and a ring-shaped disk flange 10c that is connected to the spokes through a curved-surface connecting portion R that is formed by bending the spokes at an outer circumferential end thereof in a wheel axial direction, the disk flange extends in the wheel axial direction, and a decorative hole 20 is defined by the adjacent spokes, the hub mounting portion, and the disk flange, and a part that faces a distal end 12 of the spoke in a fitting area between an inner circumferential surface of the rim and an outer circumferential surface of the disk flange is welded.

Abstract: A method comprising: a step of preforming a plurality of bulging portions on a substantially circular plate blank, the bulging portions being located concentrically and circumferentially outward of a bolt hole, each of the bulging portions being a base of a reinforcing portion of a spoke; a step of forming a plurality of prototypical decorative holes on the respective bulging portions to form a prototypically-shaped spoke between the adjacent prototypical decorative holes; a step of forming a disk flange by bending an outer circumferential portion of the plate blank, on which the prototypical decorative holes are formed, at a right angle to be substantially parallel to a wheel axial direction, so that an outer periphery of a resultant decorative hole forms an upper end edge of the disk flange; and a step of forming the spoke by providing the prototypically-shaped spoke with the reinforcing portion.