| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bearing device for a hub spindle of a wheel, in which a spindle part of the hub spindle integrally formed with a wheel-side flange part which can be fitted with the wheel is supported on a support via a bearing, and which restrains the hub shaft from being broken in the action of an excessive spindle-bending-direction load, exceeding a load input in ordinary use, among spindle-bending-direction loads acting on the hub spindle. <P>SOLUTION: The bearing of the spindle part 10 of the hub spindle 1 includes an inner ring, an outer ring member 45, and balls 50 and 51 that are rollably disposed between the inner and outer rings. A support-side flange part 48 for being attached to the support is integrally formed on the outer peripheral surface of the outer ring member 45. In the support-side flange part 48, a part, which serves as an auxiliary bracket 70 (fragile part) lower in strength against the spindle-bending-direction load, acting on the hub spindle 1, than the hub spindle 1, is constituted in at least one location in a circumferential direction, and deformed and destroyed earlier than the hub spindle 1 when the excessive spindle-bending-direction load F, exceeding the load input in ordinary use, acts on the hub spindle 1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
