基本信息:
- 专利标题： 车轮用轴承装置
- 专利标题（英）：Wheel bearing apparatus for a vehicle
- 申请号：CN200880121505.6 申请日：2008-12-17
- 公开(公告)号：CN101939175A 公开(公告)日：2011-01-05
- 发明人： 小森和雄
- 申请人： NTN株式会社
- 申请人地址： 日本大阪府
- 专利权人： NTN株式会社
- 当前专利权人： NTN株式会社
- 当前专利权人地址： 日本大阪府
- 代理机构： 北京三友知识产权代理有限公司
- 代理人： 党晓林
- 优先权： 2007-327004 2007.12.19 JP
- 国际申请： PCT/JP2008/003811 2008.12.17
- 国际公布： WO2009/078174 JA 2009.06.25
- 进入国家日期： 2010-06-18
- 主分类号： B60B35/02
- IPC分类号： B60B35/02 ; B60B35/14 ; B60B35/18 ; F16C19/18 ; F16C19/38 ; F16C33/58 ; F16C33/80 ; F16J15/447
A bearing device for a wheel, in which the sealing ability and durability of a seal are enhanced to extend the life of a bearing. The bearing device for a wheel has the seal (8) mounted to an opening of an annular space formed between an outer member (5) and a hub ring (1'). An inner base (6b) of a wheel mounting flange (6) has a circular arc cross-sectional shape, and the seal (8) makes sliding contact with the base (6b). A step (15) is formed between an inner side surface (6d) and the base (6b) of the wheel mounting flange (6), and a corner of the step (15) is formed in a combined circular arc surface having curvature radii (Ra, Rb). An annular recess (13) is formed in the inner periphery at the outer end of the outer member (5). A substantially L-shaped labyrinth seal (14) is formed so as to face the corner of the step with a small gap therebetween. Because of the construction above, stress concentration in the hub ring (1') is relaxed and the seal (8) is prevented from being directly exposed to muddy water coming from the outside, and as a result, the sealing ability and durability of the seal (8) are enhanced.
公开/授权文献:
- CN101939175B 车轮用轴承装置 公开/授权日：2012-10-10
IPC结构图谱:
| B | 作业；运输 |
| --B60 | 一般车辆 |
| ----B60B | 车轮；脚轮；车轴；车轮附着力的提高 |
| ------B60B35/00 | 车轴总成；及其部件 |
| --------B60B35/02 | .非驱动轴，即不传递转矩的 |