| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing fixing structure, in which increase of bearing friction by crimping is also inhibited. SOLUTION: This bearing fixing structure is provided with: a shaft member; a bearing holding part formed at an axial intermediate position of the shaft member; a large-diameter part formed on an axial one side of the bearing holding part, and having an outer diameter larger than that of the bearing holding part; a small-diameter part formed on the axial other side of the bearing holding part, and having an outer diameter smaller than that of the bearing holding part; a ball bearing arranged on an outer peripheral side of the bearing holding part, and composed of an inner race, an outer race and balls arranged between the inner race and the outer race; and a bearing fixing member arranged on the small-diameter part, having an annular shape or a circular shape, formed of a metal material, reduced in diameter by plastic deformation, and fixing the inner race between the large-diameter part and itself by entering into the small-diameter part. The bearing fixing member has a cut-out part formed at a predetermined part in the circumferential direction, and having a cross-sectional area smaller than those of the other parts. COPYRIGHT: (C)2009,JPO&INPIT
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