JPS5774804A - Turntable device - Google Patents
Turntable deviceInfo
- Publication number
- JPS5774804A JPS5774804A JP13542381A JP13542381A JPS5774804A JP S5774804 A JPS5774804 A JP S5774804A JP 13542381 A JP13542381 A JP 13542381A JP 13542381 A JP13542381 A JP 13542381A JP S5774804 A JPS5774804 A JP S5774804A
- Authority
- JP
- Japan
- Prior art keywords
- coils
- turntable
- magnetized
- hub
- printed
- 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
Landscapes
- Rotational Drive Of Disk (AREA)
Abstract
PURPOSE: To obtain a turntable device which is flat and light, by providing a magnet bodies which are placed symmetrically on the inside surface of a turntable of a record player, and are magnetized to the opposite polarity alternately, providing plural coils on corresponding positions on a fixed substrate, and driving them.
CONSTITUTION: On the upper surface of a fixed substrate 1 on which a hub 2 and a hollowed place 2a are formed, a doughnut-like insurating plate 3 is stuck at a position with the hub 2 between, and on the insulating plate 3, coils S1W3 of an almost same shape are printed and arranged at almost equal intervals to the center and also at equal intervals to each other. On the insulating plate 3 positioned between each S1W3, position detectors V1W3, for instance, Hall elements are placed. Also, a turntable 9 which is placed so as to be opposed to the coils S1W3 is supported by a shaft 7, and on the inside surface, magnet bodies R1W4 which are printed on a thin ring-like synthetic resin body 10 and are magnetized and arrayed to the opposite polarity alternately are placed so as to correspond to the coils S1W3. A DC current supplied to the coils S1W3 is controlled by outputs of the detectors V1W3, and a speed of rotation of the turntable 9 is controlled.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13542381A JPS5774804A (en) | 1981-08-31 | 1981-08-31 | Turntable device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13542381A JPS5774804A (en) | 1981-08-31 | 1981-08-31 | Turntable device |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP49067029A Division JPS5927988B2 (en) | 1974-06-14 | 1974-06-14 | turntable device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5774804A true JPS5774804A (en) | 1982-05-11 |
Family
ID=15151380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13542381A Pending JPS5774804A (en) | 1981-08-31 | 1981-08-31 | Turntable device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5774804A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4886503A (en) * | 1972-02-18 | 1973-11-15 |
-
1981
- 1981-08-31 JP JP13542381A patent/JPS5774804A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4886503A (en) * | 1972-02-18 | 1973-11-15 |
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