JPS57154674A - Tone arm device - Google Patents
Tone arm deviceInfo
- Publication number
- JPS57154674A JPS57154674A JP4000781A JP4000781A JPS57154674A JP S57154674 A JPS57154674 A JP S57154674A JP 4000781 A JP4000781 A JP 4000781A JP 4000781 A JP4000781 A JP 4000781A JP S57154674 A JPS57154674 A JP S57154674A
- Authority
- JP
- Japan
- Prior art keywords
- horizontal
- vertical
- coil
- yoke
- opposed
- 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 simplify the structure, by constituting a vertical driving source and a horizontal driving source so that a vertical driving coil and a magnet are opposed in a vertical yoke, and a horizontal yoke provided on the arm base, a horizontal coil and a horizontal magnet are opposed, respectively.
CONSTITUTION: A tone arm body 1 is supported by an arm base 3 so as to be freely rotatable vertically and horizontally, through a bearing 23, a ring-like member 2a and a bearing 24. The upper end of a lift shaft 4 is fixed to the arm body 1, and to its lower end, a vertical drviving coil 5 is stuck. The coil 5 is opposed to vertical magnets 7, 8 and forms a magnetic path together with a vertical yoke 9. A yoke 6 provided on the end of the arm base 3, a yoke 14 provided on a horizontal coil holder 12, a horizontal coil 13 and a magnet 11 form a horizontal magnetic path. Exact positioning and exact operation control are executed by detecting and controlling the vertical displacement and the horizontal displacement by a photointerrupter 18, and by forming an optical potentiometer by photodetecting and light emitting elements 19, 20, respectively.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4000781A JPS57154674A (en) | 1981-03-18 | 1981-03-18 | Tone arm device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4000781A JPS57154674A (en) | 1981-03-18 | 1981-03-18 | Tone arm device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57154674A true JPS57154674A (en) | 1982-09-24 |
Family
ID=12568846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4000781A Pending JPS57154674A (en) | 1981-03-18 | 1981-03-18 | Tone arm device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57154674A (en) |
-
1981
- 1981-03-18 JP JP4000781A patent/JPS57154674A/en active Pending
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