Title:
VEHICLE WHEEL BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/202530
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a vehicle wheel bearing device with which it is possible to increase the strength of a recessed part formed in an inner member and improve fatigue strength. Provided is a vehicle wheel bearing device (1) provided with an outer ring (2) having a double-row outer raceway surface (2c) on the inner circumference thereof, a hub ring (3) having a double-row inner raceway surface (3d) on the outer circumference thereof, and double-row tapered rollers (5a, 5b) accommodated so as to be able to roll between the respective raceway surfaces of the hub ring (3) and the outer ring (2), wherein: the hub ring (3) has a recessed part (13) provided between the inner raceway surface (3d) and a flange surface (3f) that is outward relative to the inner raceway surface (3d); and the recessed part (13) is subjected to treatment for hardening the surface thereof using quenching, and is subjected to grinding by means of a grinding stone (20).
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Inventors:
MATSUSITA TOMOKI (JP)
SEKI MAKOTO (JP)
NAKATSUJI YUTA (JP)
SEKI MAKOTO (JP)
NAKATSUJI YUTA (JP)
Application Number:
PCT/JP2022/011885
Publication Date:
September 29, 2022
Filing Date:
March 16, 2022
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
F16C19/38; B60B35/18; F16C33/58; F16C33/64
Foreign References:
| JP2004150482A | 2004-05-27 | |||
| JP2006009891A | 2006-01-12 | |||
| JP2017150649A | 2017-08-31 |
Attorney, Agent or Firm:
YANO INTERNATIONAL PATENT ATTORNEYS OFFICE, P.C. (JP)
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