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Title:
WHEEL BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/077903
Kind Code:
A1
Abstract:
Disclosed is a wheel bearing device which has a hub ring and an outer joint member coupled through a projection-and-depression fitting structure and in which the precision of the projection-and-depression fitting structure after reassembly can be verified easily and accurately. The hub ring (21) and the outer joint member (3) are coupled through a projection-and-depression fitting structure (M) which is formed by pressing the shaft (5) provided with projections (41) into the hole (24) provided in the hub ring (21) so as to form depressions (42) with the projections (41) and in which the region (43) where each projection (41) fits within the mating depression (42) is in tight fit. The projection-and-depression fitting structure (M) can be disassembled by applying a pulling force in the axial direction with the bolt (30) removed, and can be reassembled by re-screwing the bolt (30) into the bolt hole (5d). The hub ring (21) has a receiving section (23a) in which the bolt (30) is received. The shaft (5) has a small-diameter section (5a) serving as an insertion section which is inserted within the inner periphery of the receiving section (23a) when the projection-and-depression fitting structure (M) is in the assembled state. The small-diameter section (5a) is utilized for verifying the precision and the configuration of the projection-and-depression fitting structure (M).

Inventors:
UMEKIDA Mitsuru (1578 Higashikaizuka, Iwata-sh, Shizuoka 37, 〒4380037, JP)
梅木田 光 (〒37 静岡県磐田市東貝塚1578番地 NTN株式会社内 Shizuoka, 〒4380037, JP)
TOMOGAMI Shin (1578 Higashikaizuka, Iwata-sh, Shizuoka 37, 〒4380037, JP)
友上 真 (〒37 静岡県磐田市東貝塚1578番地 NTN株式会社内 Shizuoka, 〒4380037, JP)
SHIBATA Kiyotake (1578 Higashikaizuka, Iwata-sh, Shizuoka 37, 〒4380037, JP)
Application Number:
JP2010/071277
Publication Date:
June 30, 2011
Filing Date:
November 29, 2010
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
NTN株式会社 (〒03 大阪府大阪市西区京町堀1丁目3番17号 Osaka, 〒5500003, JP)
UMEKIDA Mitsuru (1578 Higashikaizuka, Iwata-sh, Shizuoka 37, 〒4380037, JP)
梅木田 光 (〒37 静岡県磐田市東貝塚1578番地 NTN株式会社内 Shizuoka, 〒4380037, JP)
TOMOGAMI Shin (1578 Higashikaizuka, Iwata-sh, Shizuoka 37, 〒4380037, JP)
友上 真 (〒37 静岡県磐田市東貝塚1578番地 NTN株式会社内 Shizuoka, 〒4380037, JP)
International Classes:
B60B35/14; B60B35/18; F16C19/18; F16C33/58; F16C35/063; F16D1/06
Foreign References:
JP2008230489A2008-10-02
JP2009270629A2009-11-19
JP2009270627A2009-11-19
JP2009255729A2009-11-05
JP2009255725A2009-11-05
JP2009262623A2009-11-12
JP2009056869A2009-03-19
JP2009056869A2009-03-19
JP2004340311A2004-12-02
Other References:
See also references of EP 2517897A4
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (Ehara Patent Office, 15-26 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
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