JPS5622215A - Rotary head assembly - Google Patents
Rotary head assemblyInfo
- Publication number
- JPS5622215A JPS5622215A JP9821779A JP9821779A JPS5622215A JP S5622215 A JPS5622215 A JP S5622215A JP 9821779 A JP9821779 A JP 9821779A JP 9821779 A JP9821779 A JP 9821779A JP S5622215 A JPS5622215 A JP S5622215A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- head
- microgroove
- height
- minute
- 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.)
- Granted
Links
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
PURPOSE: To obtain an accurate head height by constituting the fluid bearing by engaging the sleeve to instal its upper cylinder to the center shaft one end of which is fixed to the substrate and then providing the microgroove to make the rotary head part float up via the minute oil film.
CONSTITUTION: The cylinder of the VTR consists of the upper cylinder functioning as the rotary rotary head part, the head mounted to upper cylinder 28 and lower cylinder 30 each. This cylinder is fixed to lower housing 40 functioning as the substrate. On the other hand, upper end face 60 of the thrust bearing is made flat, and protruded part 100 of a minute diameter is provided at the center part of face 60 along with the microgroove formed on the surface of part 100 each. In such constitution, the relative position between center shaft 51 and reference surface S is constant even after assembly. Thus height H of head 29 can be kept in a high accuracy after assembly just by securing the accuracy of height for the tip part of shaft 51 from surface S since the floating extent of the surface of microgroove 55 is minute.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9821779A JPS6027096B2 (en) | 1979-07-31 | 1979-07-31 | rotating head assembly |
| US06/109,491 US4332428A (en) | 1979-01-16 | 1980-01-04 | Rotary mechanism with axial bearings |
| GB8000501A GB2043182B (en) | 1979-01-16 | 1980-01-08 | Bearing assemblies |
| FR8000568A FR2446953A1 (en) | 1979-01-16 | 1980-01-11 | ROTATING MECHANISM PROVIDED WITH AXIAL LOADED BEARINGS |
| CA343,739A CA1132170A (en) | 1979-01-16 | 1980-01-15 | Rotary mechanism with axial bearings |
| DE3001432A DE3001432C2 (en) | 1979-01-16 | 1980-01-16 | Rotary mechanism with a fluid-lubricated axial bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9821779A JPS6027096B2 (en) | 1979-07-31 | 1979-07-31 | rotating head assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5622215A true JPS5622215A (en) | 1981-03-02 |
| JPS6027096B2 JPS6027096B2 (en) | 1985-06-27 |
Family
ID=14213796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9821779A Expired JPS6027096B2 (en) | 1979-01-16 | 1979-07-31 | rotating head assembly |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6027096B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5917018A (en) * | 1982-07-15 | 1984-01-28 | Matsushita Electric Ind Co Ltd | Fluid bearing device utilizing dynamic pressure type lubricating oil |
| WO1984000439A1 (en) * | 1982-07-06 | 1984-02-02 | Matsushita Electric Ind Co Ltd | Rotary head assembly |
| 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 |
-
1979
- 1979-07-31 JP JP9821779A patent/JPS6027096B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984000439A1 (en) * | 1982-07-06 | 1984-02-02 | Matsushita Electric Ind Co Ltd | Rotary head assembly |
| JPS5917018A (en) * | 1982-07-15 | 1984-01-28 | Matsushita Electric Ind Co Ltd | Fluid bearing device utilizing dynamic pressure type lubricating oil |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6027096B2 (en) | 1985-06-27 |
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