Title:
流体動圧軸受装置及びこれを備えるモータ
Document Type and Number:
Japanese Patent JP6877185
Kind Code:
B2
Abstract:
A charging amount of lubricating oil (11) into an internal space of a housing (7) is adjusted so that, within a range of a use temperature, an oil level of the lubricating oil (11) is positioned on a lower side with respect to an upper end portion of a chamfered portion (8f) formed in an upper-end inner peripheral edge portion of a bearing member (8). The bearing member (8) integrally includes: a small-diameter cylindrical portion (81); and a large-diameter cylindrical portion (82). Under a state in which an upper end surface (8c) of the small-diameter cylindrical portion (81) is exposed to an atmosphere, the large-diameter cylindrical portion (82) is sandwiched from both sides in the axial direction with an annular member (9) and a bottom portion (7b) of the housing (7) so that the bearing member (8) is fixed along an inner periphery of the housing (7).
Inventors:
Shinji Komatsubara
Application Number:
JP2017038309A
Publication Date:
May 26, 2021
Filing Date:
March 01, 2017
Export Citation:
Assignee:
ntn corporation
International Classes:
F16C17/02; F16C17/08; F16C35/02; H02K5/16; H02K7/08
Domestic Patent References:
| JP200764240A | ||||
| JP201459014A | ||||
| JP11252859A | ||||
| JP2003307227A |
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Tsuyoshi Kumano