Title:
DYNAMIC PRESSURE BEARING
Document Type and Number:
Japanese Patent JP3681018
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent lubricant fluid from leaking out of a through-pass hole of a sleeve.
SOLUTION: This dynamic pressure bearing is comprised of a shaft 1 having a small diameter part 3 at one axial end, a large diameter part 5 adjacent to the small diameter part 3 and a flange part 6 adjacent to the large diameter part 5, and a sleeve 2 having a through-pass hole 12 enclosing the shaft 1 to which the small diameter part of the shaft 1 is fitted. An axial surface 6A of the flange part 6 is formed with a dynamic pressure groove 7. A circumferential surface 5A of the large diameter part 5 of the shaft 1 and an inner circumferential surface 13 of the large diameter of the sleeve 2 constitute a first annular fine passage 15, and a circumferential surface 3A of the small diameter part 3 and an inner circumferential surface 12A of the small diameter of the through-pass hole 12 of the sleeve 2 constitute a second annular fine passage 16. In addition, there are provided a feeding-in passage 18 extending in an outward diameter direction between the first annular fine passage 15 and the second annular fine passage 16, and a lubricant agent reservoir 17 communicated with the feeding-in passage 18.
Inventors:
Tsuyoshi Takahashi
▲高▼村 康雄
Takashi Honda
▲高▼村 康雄
Takashi Honda
Application Number:
JP12981496A
Publication Date:
August 10, 2005
Filing Date:
May 24, 1996
Export Citation:
Assignee:
Koyo Seiko Co., Ltd.
tdk Corporation
tdk Corporation
International Classes:
F16C17/04; F16C17/10; F16C33/10; (IPC1-7): F16C17/04; F16C17/10; F16C33/10
Domestic Patent References:
| JP8037755A | ||||
| JP8105446A | ||||
| JP8105445A | ||||
| JP9264320A | ||||
| JP8172750A | ||||
| JP7046810A | ||||
| JP6319240A | ||||
| JP4196036A | ||||
| JP6071917U |
Attorney, Agent or Firm:
Aoyama Aoi
Hiroshi Yamazaki
Hiroshi Yamazaki