Patent ID: 9327547
Filing Date: 2016-05-03
CPC Classification: B60B,B60Y

Claim Text:
1. A vehicle wheel disk comprising: a hub coupling portion; a rising wall rising from the hub coupling portion outward in an axial direction of the disk; a disk flange located at a radially outer end of the disk and extending in a circumferential direction of the disk; a plurality of spokes, each spoke extending in a radial direction of the disk and connecting the rising wall and the disk flange, and a vent window being formed between adjacent spokes of the plurality of spokes; and a vent window inside wall located outwardly of the rising wall and inwardly of the vent window in the radial direction of the disk and between adjacent spokes of the plurality of spokes, wherein each spoke includes: wherein, in a cross section of each spoke along the radial direction of the disk, the crest outer curved portion of the spoke crest has a larger curvature than each of curvatures of the crest inner curved portion of the spoke crest, the crest main portion of the spoke crest and the spoke radially outer wall; and wherein a difference between: 1) an axial height of the crest main portion of the disk at the spoke in a first cross section of the disk along the radial direction of the disk and 2) an axial height of a vent window-defining edge of the disk at a center of the vent window in a second cross section of the disk along the radial direction of the disk increases in a direction from the crest inner curved portion toward the crest outer curved portion of the spoke crest.