JPS5718812A - Dynamic pressure type spindle - Google Patents
Dynamic pressure type spindleInfo
- Publication number
- JPS5718812A JPS5718812A JP9329780A JP9329780A JPS5718812A JP S5718812 A JPS5718812 A JP S5718812A JP 9329780 A JP9329780 A JP 9329780A JP 9329780 A JP9329780 A JP 9329780A JP S5718812 A JPS5718812 A JP S5718812A
- Authority
- JP
- Japan
- Prior art keywords
- radial
- spindle
- dynamic pressure
- bearing part
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To prevent noise, vibration and uneven torque during the revolution of a spindle so that it may be turned with small torque by making all the bearing part a dynamic pressure type bearing which uses a lubricant as a media.
CONSTITUTION: An outer cylinder 1 has a round hole to which a spindle 2 is to be inserted, and a thrust receiving member 12 having a semispherically recessed receving face 121 is held against the said cylinder via retainer plate 13. The radial gap t at the portion between an inner radial face 111 and an inner radial face 112 is made larger than the gap t2 at the radial bearing portion. The spindle 2 has outer radial faces 22 and 23 where multiple number of groove for dynamic pressure generation and has at its end a semispherically protruding end 22 having multiple number of spiral groove. A lubricant is filled in the radial bearing part and the thrust bearing part to form a pressure fluid layer.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9329780A JPS5718812A (en) | 1980-07-10 | 1980-07-10 | Dynamic pressure type spindle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9329780A JPS5718812A (en) | 1980-07-10 | 1980-07-10 | Dynamic pressure type spindle |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17251784A Division JPS60121308A (en) | 1984-08-21 | 1984-08-21 | Dynamic pressure type composite bearing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5718812A true JPS5718812A (en) | 1982-01-30 |
Family
ID=14078424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9329780A Pending JPS5718812A (en) | 1980-07-10 | 1980-07-10 | Dynamic pressure type spindle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5718812A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59151615A (en) * | 1983-02-15 | 1984-08-30 | Koyo Seiko Co Ltd | Vertical turning equipment |
US4573807A (en) * | 1984-01-31 | 1986-03-04 | Matsushita Electric Industrial Co., Ltd. | Fluid bearing device |
US4656545A (en) * | 1983-07-28 | 1987-04-07 | Nippon Seiko Kabushiki Kaisha | Magnetic disc memory device |
US5623382A (en) * | 1993-01-29 | 1997-04-22 | Matsushita Electrical Industrial Co., Ltd. | Disk driving apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4132414A (en) * | 1972-02-07 | 1979-01-02 | Jack Dinsdale | Gramophone turntable apparatus |
-
1980
- 1980-07-10 JP JP9329780A patent/JPS5718812A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4132414A (en) * | 1972-02-07 | 1979-01-02 | Jack Dinsdale | Gramophone turntable apparatus |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59151615A (en) * | 1983-02-15 | 1984-08-30 | Koyo Seiko Co Ltd | Vertical turning equipment |
US4656545A (en) * | 1983-07-28 | 1987-04-07 | Nippon Seiko Kabushiki Kaisha | Magnetic disc memory device |
US4573807A (en) * | 1984-01-31 | 1986-03-04 | Matsushita Electric Industrial Co., Ltd. | Fluid bearing device |
US5623382A (en) * | 1993-01-29 | 1997-04-22 | Matsushita Electrical Industrial Co., Ltd. | Disk driving apparatus |
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