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Title:
FLUID DYNAMIC BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/112057
Kind Code:
A1
Abstract:
A fluid dynamic bearing device 1 comprising: a shaft member 2; a bearing sleeve 8 having the shaft member 2 inserted into the inner circumference thereof; a floored cylindrical housing 7 holding the bearing sleeve 8 in the inner circumference thereof and having an opening in an end section on one side in the axial direction; and a seal member 9 provided in the opening of the housing 7. The seal member 9 has: a disc 9a arranged on one side of the bearing sleeve 8 in the axial direction; and a protruding section (tubular section 9b) protruding to the other side in the axial direction, from an outer radial end of the disc 9a. An outer circumferential surface 9c of the seal member 9 is fixed to an inner circumferential surface 7a1 of the housing 7.

Inventors:
HARADA Kazuyoshi (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
KOMATSUBARA Shinji (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
OKA Shouhei (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
HIRADE Jun (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
Application Number:
JP2018/045171
Publication Date:
June 13, 2019
Filing Date:
December 07, 2018
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
F16C33/74; F16C17/02; F16C17/08
Foreign References:
JP2004263710A2004-09-24
JP2011196544A2011-10-06
JP2005337364A2005-12-08
JP2018017262A2018-02-01
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (Ehara Patent Office, 2-15 Bakurou-machi 4-chome, Chuo-ku, Osaka-sh, Osaka 59, 〒5410059, JP)
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