Title:
VEHICLE WHEEL BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/022043
Kind Code:
A1
Abstract:
Provided is a vehicle wheel bearing device with which it is possible to achieve good sealing performance without preventing the discharge of muddy water that has penetrated to the inside of a sealing device even if a labyrinth seal has been formed in the sealing device. An inner seal member 10 of the vehicle wheel bearing device 1 comprises a slinger 14 and a seal member 13 having a metal core 11 and an elastic member 12, and forms a labyrinth seal using a first side lip 122 and a protruding part 14c of the slinger 14. A first gap A in the radial direction between a tip 122a of the first side lip 122 and the protruding part 14c is a size equal to or smaller than a second gap B in the axial direction between the tip 122a of the first side lip 122 and an annular part 14b of the slinger 14, and is bigger than a third gap C in the radial direction between the protruding part 14c and an inner peripheral surface part 121a of the elastic member 12.
Inventors:
SEKI MAKOTO (JP)
Application Number:
PCT/JP2022/030276
Publication Date:
February 23, 2023
Filing Date:
August 08, 2022
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C19/18; F16C33/78; F16C33/80; F16J15/3232; F16J15/3256; F16J15/447
Domestic Patent References:
| WO2020116901A1 | 2020-06-11 |
Foreign References:
| JP2018119598A | 2018-08-02 | |||
| JP2008128396A | 2008-06-05 | |||
| JP2017067101A | 2017-04-06 | |||
| JP2015110958A | 2015-06-18 | |||
| JP2002048147A | 2002-02-15 |
Attorney, Agent or Firm:
YANO INTERNATIONAL PATENT ATTORNEYS OFFICE, P.C. (JP)
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