Title:
BEARING DEVICE FOR WHEEL
Document Type and Number:
WIPO Patent Application WO/2007/138738
Kind Code:
A1
Abstract:
A bearing device for a wheel, where sealing performance of a seal is improved to
maintain bearing performance for a long period. A seal (8) on the outboard side
is constructed from an annular seal plate (9) and a slinger (10) that have a substantially
L-shaped cross-section and are arranged opposite to each other. The annular
seal plate (9) is made up of a first metal core (11) press-fitted in the inner periphery
at an end of an outer member (3) and of a first seal member (12) joined to the first
metal core (11). The slinger (10) is press-fitted on the outer periphery of an
inner ring (5). The seal member (12) has side lips (12a, 12b) insliding contact
with the slinger (10). A backup seal (13) is provided on the outer side of the seal
(8), and the backup seal (13) has a second metal core (14) press-fitted on the outer
periphery at the end of the outer member (3) and also has a second seal member (15)
integrally joined with an inner end section of the second metal core (14). The
second seal member (15) inclines extending radially inward and integrally has
a seal lip (15a) in sliding contact with the slinger (10). The construction prevents
rain water, dust, etc. from directly entering into the seal (8) to improve its
sealing performance.
Inventors:
TORII AKIRA (JP)
SHIBATA KIYOTAKE (JP)
SUZUKI SYOUGO (JP)
YAMAMOTO KAZUNARI (JP)
SHIGEOKA KAZUHISA (JP)
IMANAKA HIRONORI (JP)
SHIBATA KIYOTAKE (JP)
SUZUKI SYOUGO (JP)
YAMAMOTO KAZUNARI (JP)
SHIGEOKA KAZUHISA (JP)
IMANAKA HIRONORI (JP)
Application Number:
PCT/JP2007/000551
Publication Date:
December 06, 2007
Filing Date:
May 23, 2007
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
TORII AKIRA (JP)
SHIBATA KIYOTAKE (JP)
SUZUKI SYOUGO (JP)
YAMAMOTO KAZUNARI (JP)
SHIGEOKA KAZUHISA (JP)
IMANAKA HIRONORI (JP)
TORII AKIRA (JP)
SHIBATA KIYOTAKE (JP)
SUZUKI SYOUGO (JP)
YAMAMOTO KAZUNARI (JP)
SHIGEOKA KAZUHISA (JP)
IMANAKA HIRONORI (JP)
International Classes:
F16C33/78; B60B35/18; F16C19/38; F16C33/80; F16J15/32
Domestic Patent References:
| WO2006008898A1 | 2006-01-26 |
Foreign References:
| JP2004205008A | 2004-07-22 | |||
| JP2006125536A | 2006-05-18 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (10-2 Edobori 1-chome, Nishi-k, Osaka-shi Osaka 02, JP)
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