Title:
ROLLING BEARING UNIT HAVING ROTATION SPEED DETECTOR DEVICE
Document Type and Number:
WIPO Patent Application WO2015122540
Kind Code:
A1
Abstract:
A rolling bearing unit (1a) having a rotation speed detection device and capable of preventing damage to a sensor insertion ring (26a) and of ensuring sealing performance by a cap (19a) can be provided without requiring time-consuming work. A through-hole (25a) penetrating in the axial direction is formed in a bottom section (23a) constituting the cap (19a) blocking an opening on the axial inner end of an outer ring (2), said through-hole being formed in a section facing an encoder (13) and the axial direction. A closed-bottom cylindrical sensor insertion ring (26a) made from non-magnetic material is inserted into this through-hole (25a) in the axial direction, having a bottom plate section (35a) at the front thereof, and fits into the inside of this through-hole (25a). A rubber O ring (56) is sandwiched, in a state whereby same has interference in the radial direction, inside a ring-shaped space (55) formed between an outer circumferential surface of a cylindrical section (39a) constituting the sensor insertion ring (26a) and an inner circumferential surface of a medium diameter hole (53) constituting this through-hole (25a).
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Inventors:
TAKANASHI HARUMI (JP)
Application Number:
PCT/JP2015/054345
Publication Date:
August 20, 2015
Filing Date:
February 17, 2015
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
F16C41/00; F16C19/18; F16C33/76; F16J15/06
Domestic Patent References:
| WO2004035326A1 | 2004-04-29 |
Foreign References:
| JPH10319027A | 1998-12-04 | |||
| JP2011002029A | 2011-01-06 | |||
| JP2006162404A | 2006-06-22 | |||
| JPH11142424A | 1999-05-28 | |||
| JP2013044350A | 2013-03-04 |
Other References:
See also references of EP 3109496A4
Attorney, Agent or Firm:
Eikoh Patent Firm, P. C. et al. (JP)
Patent business corporation glory patent firm (JP)
Patent business corporation glory patent firm (JP)
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