| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology capable of installing an inner ring for restraining the expansion to the radial direction of a raw material for the inner ring, in a hub wheel.SOLUTION: In an installation structure of an inner ring, the raw material 71A for the inner ring has a body part 15 constituted of a track part 15a with a small collar part of becoming a track part 72a of the inner ring and an annular ring-shaped projection part 15b projecting from the inner peripheral edge of a vehicle body side end surface 150a of the track part 15a with the small collar part, and an annular ring-shaped large collar part 16 fitted to the track part 15a with the small collar part on the outer periphery of the projection part 15b and brought into close contact by the formation of a caulking part 62b, and an annular ring-shaped void 17 for allowing deformation of the projection part 15b generated in response to the formation of the caulking part 62b, is formed between an inner peripheral surface 161c of the large collar part 16 and an outer peripheral surface 152a of the projection part 15b in a fitting state of the large collar part 16 and the track part 15a with the small collar part. |
