JPS5567966A - Magnetic recording and reproducing device - Google Patents
Magnetic recording and reproducing deviceInfo
- Publication number
- JPS5567966A JPS5567966A JP14133078A JP14133078A JPS5567966A JP S5567966 A JPS5567966 A JP S5567966A JP 14133078 A JP14133078 A JP 14133078A JP 14133078 A JP14133078 A JP 14133078A JP S5567966 A JPS5567966 A JP S5567966A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- torque
- reel turntable
- reel
- eddy current
- 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
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
PURPOSE: To reduce a ripple of torque of a driving source and also to turn a reel turntable properly by a simple constitution by composing a rotation transmission mechanism for the reel turntable of a magnet and a body of revolution generating an eddy current loss.
CONSTITUTION: To output shaft 4 of motor 3 provided on the bisector between supply reel turntable 1 and take-up reel turntable 2, pulley 6 with integrally-provided permanent magnet 5 is fixed and wheel 7 with fixed disk 8 of aluminium, etc., generating an eddy current loss and back yoke 9 of a ferromagnetic body such as iron is fitted rotatably. As a result, as a supply voltage across motor 3 is rised, motor 3 starts rotating and after torque is generated at reel turntables 1 and 2 through the magnetic adsorption of back yoke 9 and magnet 5, an eddy current proportional to a difference in rotational frequency between motor 3 and wheel 7 is generated through disk 8 to generate torque in a direction where the rotation of motor 3 is stopped. Therefore, reel turntable torque in recording and reproducing modes and that in rewind and fast forward modes can automatically be obtained according to variation in rotational frequency of motor 3.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14133078A JPS5567966A (en) | 1978-11-15 | 1978-11-15 | Magnetic recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14133078A JPS5567966A (en) | 1978-11-15 | 1978-11-15 | Magnetic recording and reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5567966A true JPS5567966A (en) | 1980-05-22 |
Family
ID=15289427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14133078A Pending JPS5567966A (en) | 1978-11-15 | 1978-11-15 | Magnetic recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5567966A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57141058A (en) * | 1981-02-23 | 1982-09-01 | Hitachi Ltd | Tape driving mechanism for magnetic recording and reproducing device |
| JPS5888852A (en) * | 1981-11-20 | 1983-05-27 | Hitachi Ltd | Reel driver |
| JPS593782U (en) * | 1982-06-29 | 1984-01-11 | 松下電器産業株式会社 | magnetic recording and reproducing device |
| JPS61150662A (en) * | 1984-12-24 | 1986-07-09 | Matsushita Electric Works Ltd | Transmission mechanism of motor power |
| JPH08728U (en) * | 1993-02-10 | 1996-04-23 | 東京部品工業株式会社 | Eddy current retarder |
-
1978
- 1978-11-15 JP JP14133078A patent/JPS5567966A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57141058A (en) * | 1981-02-23 | 1982-09-01 | Hitachi Ltd | Tape driving mechanism for magnetic recording and reproducing device |
| JPS5888852A (en) * | 1981-11-20 | 1983-05-27 | Hitachi Ltd | Reel driver |
| JPS593782U (en) * | 1982-06-29 | 1984-01-11 | 松下電器産業株式会社 | magnetic recording and reproducing device |
| JPS61150662A (en) * | 1984-12-24 | 1986-07-09 | Matsushita Electric Works Ltd | Transmission mechanism of motor power |
| JPH08728U (en) * | 1993-02-10 | 1996-04-23 | 東京部品工業株式会社 | Eddy current retarder |
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