JPS5588559A - Magnetic circuit construction for magnetic deriver - Google Patents
Magnetic circuit construction for magnetic deriverInfo
- Publication number
- JPS5588559A JPS5588559A JP16401078A JP16401078A JPS5588559A JP S5588559 A JPS5588559 A JP S5588559A JP 16401078 A JP16401078 A JP 16401078A JP 16401078 A JP16401078 A JP 16401078A JP S5588559 A JPS5588559 A JP S5588559A
- Authority
- JP
- Japan
- Prior art keywords
- magnets
- magnetic
- yokes
- thickness
- reduced
- 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
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Moving Of Heads (AREA)
Abstract
PURPOSE: To reduce the thickness of magnetic circuits and magnets by half and make a magnetic driver compact and light, by separately placing the magnets on the both ends of driving direction of a moving coil.
CONSTITUTION: Magnets 74, 74' on both the ends of a magnetic circuit unit 7 have N-poles for a yoke 75 and S-poles for another yoke 73 and similar poles for yokes 71, 73. As moving coil 6 is driven between magnets 72, 74 and others 72', 74' along the yokes. As a result, the quantity of magnetic flux of each magnet is reduced by half and the thickness of the yokes 71, 73, 75 corresponding to the magnets is also reduced by half. The efficiency of permanent magnets in general is very low unless the ratio of cross-sectional area to length is larger than a prescribed value. However, because the former magnets are separately plate placed on both the ends, an identical quantity of magnetic flux can be obtained although the cross-sectional area of each magnet is reduced by half. Since the thickness of the magnetic circuit unit is decreased to half, a magnetic driver is made compact and light as a whole.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16401078A JPS5588559A (en) | 1978-12-25 | 1978-12-25 | Magnetic circuit construction for magnetic deriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16401078A JPS5588559A (en) | 1978-12-25 | 1978-12-25 | Magnetic circuit construction for magnetic deriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5588559A true JPS5588559A (en) | 1980-07-04 |
Family
ID=15785046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16401078A Pending JPS5588559A (en) | 1978-12-25 | 1978-12-25 | Magnetic circuit construction for magnetic deriver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5588559A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5925566A (en) * | 1982-08-04 | 1984-02-09 | Nec Corp | Moving coil type drive device |
| JPS5975780U (en) * | 1982-11-10 | 1984-05-23 | 日立金属株式会社 | electromagnetic drive device |
| JPS59176385U (en) * | 1982-11-22 | 1984-11-26 | 日立金属株式会社 | electromagnetic drive device |
| JPS613563U (en) * | 1984-06-06 | 1986-01-10 | アルプス電気株式会社 | Disc player drive device |
| JPS6188484U (en) * | 1984-11-15 | 1986-06-09 | ||
| JPS62119190U (en) * | 1986-01-20 | 1987-07-29 | ||
| EP0458295A2 (en) * | 1990-05-25 | 1991-11-27 | Sony Corporation | Voice coil type actuator |
| WO1992004721A1 (en) * | 1990-08-31 | 1992-03-19 | Bruno Gruber | Electromagnetic regulating device |
| JPH0513698U (en) * | 1991-02-28 | 1993-02-23 | オークス株式会社 | Empty can crusher |
| JPH0560694U (en) * | 1992-01-28 | 1993-08-10 | 株式会社ミネックスメタル | Empty can crusher |
| US5459362A (en) * | 1994-05-19 | 1995-10-17 | Seagate Technology, Inc. | Small form factor actuator for improved functionality and linearity |
| US5659215A (en) * | 1994-05-19 | 1997-08-19 | Seagate Technology, Inc. | Small form factor actuator for improved functionality and linearity |
-
1978
- 1978-12-25 JP JP16401078A patent/JPS5588559A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5925566A (en) * | 1982-08-04 | 1984-02-09 | Nec Corp | Moving coil type drive device |
| JPS6311897Y2 (en) * | 1982-11-10 | 1988-04-06 | ||
| JPS5975780U (en) * | 1982-11-10 | 1984-05-23 | 日立金属株式会社 | electromagnetic drive device |
| JPS59176385U (en) * | 1982-11-22 | 1984-11-26 | 日立金属株式会社 | electromagnetic drive device |
| JPS6311898Y2 (en) * | 1982-11-22 | 1988-04-06 | ||
| JPS613563U (en) * | 1984-06-06 | 1986-01-10 | アルプス電気株式会社 | Disc player drive device |
| JPH0351814Y2 (en) * | 1984-06-06 | 1991-11-07 | ||
| JPS6188484U (en) * | 1984-11-15 | 1986-06-09 | ||
| JPS62119190U (en) * | 1986-01-20 | 1987-07-29 | ||
| EP0458295A2 (en) * | 1990-05-25 | 1991-11-27 | Sony Corporation | Voice coil type actuator |
| WO1992004721A1 (en) * | 1990-08-31 | 1992-03-19 | Bruno Gruber | Electromagnetic regulating device |
| JPH0513698U (en) * | 1991-02-28 | 1993-02-23 | オークス株式会社 | Empty can crusher |
| JPH0560694U (en) * | 1992-01-28 | 1993-08-10 | 株式会社ミネックスメタル | Empty can crusher |
| US5459362A (en) * | 1994-05-19 | 1995-10-17 | Seagate Technology, Inc. | Small form factor actuator for improved functionality and linearity |
| US5659215A (en) * | 1994-05-19 | 1997-08-19 | Seagate Technology, Inc. | Small form factor actuator for improved functionality and linearity |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5588559A (en) | Magnetic circuit construction for magnetic deriver | |
| JPS5583454A (en) | Moving coil type linear motor | |
| JPS57202866A (en) | Axially flat type motor | |
| JPS5568870A (en) | Rectilinear-moving electric machine | |
| JPS5361329A (en) | Electromagnetic mechanism for camera release | |
| JPS56122107A (en) | Electromagnetic driving device | |
| JPS57151261A (en) | Linear motor | |
| JPS5427995A (en) | Magnetic circuit device | |
| JPS5768655A (en) | Permanent magnet field system provided with auxiliary magnetic poles | |
| JPS57122663A (en) | Brushless motor | |
| JPS5411411A (en) | Magnetic circuit | |
| JPS53142139A (en) | Magnetic circuit for magnetic bubble | |
| JPS5346615A (en) | Dc linear motor | |
| JPS5722482A (en) | Coil driving type gas proportional control valve | |
| JPS6419955A (en) | Linear motor | |
| JPS53149610A (en) | Voice coil type linear motor | |
| JPS5367818A (en) | Voice coil type linear motor | |
| JPS57100416A (en) | Shutter device of electromagnetic drive | |
| JPS5367819A (en) | Poled motor | |
| JPS57126267A (en) | Linear slide motor | |
| JPS5592563A (en) | Construction of stator | |
| JPS53136609A (en) | Dc motor | |
| JPS52126710A (en) | Small synchroneous motor | |
| JPS5538028A (en) | Electromagnetic mechanism | |
| JPS5337807A (en) | Magneto rotor |