JPH0448414U - - Google Patents
Info
- Publication number
- JPH0448414U JPH0448414U JP8982590U JP8982590U JPH0448414U JP H0448414 U JPH0448414 U JP H0448414U JP 8982590 U JP8982590 U JP 8982590U JP 8982590 U JP8982590 U JP 8982590U JP H0448414 U JPH0448414 U JP H0448414U
- Authority
- JP
- Japan
- Prior art keywords
- dynamic pressure
- sleeve
- spherical
- generating
- groove
- 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
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
Description
第1図はこの考案の一実施例の要部の断面図、
第2図及び第3図は他の実施例の要部の断面略図
、第4図は従来例の要部の断面図である。
1……軸、2,12,22……スリーブ、3,
6……溝、4,14……ラジアル動圧発生部、5
……球面部、6……溝、7……凹部、8……球面
状動圧発生部、12a,22a……内周面。
FIG. 1 is a sectional view of the main parts of an embodiment of this invention.
2 and 3 are schematic cross-sectional views of main parts of another embodiment, and FIG. 4 is a cross-sectional view of main parts of a conventional example. 1...Shaft, 2, 12, 22...Sleeve, 3,
6... Groove, 4, 14... Radial dynamic pressure generating part, 5
... Spherical surface portion, 6 ... Groove, 7 ... Concave portion, 8 ... Spherical dynamic pressure generating portion, 12a, 22a ... Inner peripheral surface.
Claims (1)
面部またはその球面部に対向するように上記スリ
ーブの端部の内側に設けられた球面状の凹部の少
なくとも一方に動圧発生用の溝を設けてなる球面
状動圧発生部と、上記スリーブの略円筒状の内周
面または軸の外周面の少なくとも一方に動圧発生
用の溝を設けてなるラジアル動圧発生部とを有す
る動圧軸受において、 上記スリーブの内径を球面状動圧部から離れる
につれて次第に大きくなるテーパ状に形成したこ
とを特徴とする動圧軸受。[Claims for Utility Model Registration] At least one of a spherical part provided at the end of the shaft housed in the sleeve, or a spherical recess provided inside the end of the sleeve to face the spherical part. a spherical dynamic pressure generating portion provided with a groove for generating dynamic pressure; and a radial actuator comprising a groove for generating dynamic pressure provided on at least one of the substantially cylindrical inner circumferential surface of the sleeve or the outer circumferential surface of the shaft. What is claimed is: 1. A dynamic pressure bearing having a pressure generating section, characterized in that the inner diameter of the sleeve is formed in a tapered shape that gradually increases as it moves away from the spherical dynamic pressure section.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8982590U JPH0448414U (en) | 1990-08-27 | 1990-08-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8982590U JPH0448414U (en) | 1990-08-27 | 1990-08-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0448414U true JPH0448414U (en) | 1992-04-24 |
Family
ID=31824091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8982590U Pending JPH0448414U (en) | 1990-08-27 | 1990-08-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0448414U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000041360A (en) * | 1998-07-22 | 2000-02-08 | Seiko Instruments Inc | Liquid dynamic pressure bearing and spindle motor, hard disk drive apparatus and scanner motor using the bearing |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5729814A (en) * | 1980-07-30 | 1982-02-17 | Nippon Seiko Kk | Dynamic-pressure type fluid bearing |
JPS60121308A (en) * | 1984-08-21 | 1985-06-28 | Nippon Seiko Kk | Dynamic pressure type composite bearing device |
JPS62246619A (en) * | 1986-04-17 | 1987-10-27 | Matsushita Electric Ind Co Ltd | Dynamic pressure type fluid bearing device |
-
1990
- 1990-08-27 JP JP8982590U patent/JPH0448414U/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5729814A (en) * | 1980-07-30 | 1982-02-17 | Nippon Seiko Kk | Dynamic-pressure type fluid bearing |
JPS60121308A (en) * | 1984-08-21 | 1985-06-28 | Nippon Seiko Kk | Dynamic pressure type composite bearing device |
JPS62246619A (en) * | 1986-04-17 | 1987-10-27 | Matsushita Electric Ind Co Ltd | Dynamic pressure type fluid bearing device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000041360A (en) * | 1998-07-22 | 2000-02-08 | Seiko Instruments Inc | Liquid dynamic pressure bearing and spindle motor, hard disk drive apparatus and scanner motor using the bearing |