| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing device for a wheel capable of restraining looseness in the circumferential direction, superior in connection workability of a hub wheel and an outside joint member of a constant velocity universal joint, and superior in maintainability capable of separating the hub wheel and the outside joint member of the constant velocity universal joint. SOLUTION: This bearing device for the wheel is provided by separably joining the hub wheel 1 and a shaft part 12 of the outside joint member of the constant velocity universal joint 3 fitted to and inserted into a hole part 22 of the hub wheel 1 via a recess-projection fitting structure M. The recess-projection fitting structure M is constituted by pressing a projection part 35 arranged in any one of an outer diameter surface of the shaft part 12 of the outside joint member and an inner diameter surface 37 of the hole part 22 of the hub wheel 1 and extending in the axial direction, in the other in the axial direction, and forming a recessed part 36 fitted in close contact to the projection part 35 by the projection part 35 in the other, and closely contacting the whole area of a fitting contact part 38 of the projection part 35 and the recessed part 36. The recess-projection fitting structure M allows separation by impartment of extraction force in the axial direction. A shaft part press-in guide structure M1 is provided. COPYRIGHT: (C)2009,JPO&INPIT
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