JPS6419957A - Voice coil-motor - Google Patents
Voice coil-motorInfo
- Publication number
- JPS6419957A JPS6419957A JP17416987A JP17416987A JPS6419957A JP S6419957 A JPS6419957 A JP S6419957A JP 17416987 A JP17416987 A JP 17416987A JP 17416987 A JP17416987 A JP 17416987A JP S6419957 A JPS6419957 A JP S6419957A
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- shaped
- grooves
- center
- center yoke
- 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)
Abstract
PURPOSE:To increase driving force, and to quicken response by intermittently forming grooves along the direction of rectilinear propagation to an opposed surface to a permanent magnet of a yoke and burying cylindrical bodies consisting of a conductor into the grooves. CONSTITUTION:A center yoke 1a shaped by connecting the centers of one opposite sides of a yoke 1 is formed to the yoke 1, a cross section of which takes a square and which is formed to a square frame shape as a whole. Five U-shaped grooves 1b are formed intermittently along the axial direction of the center yoke 1a to the outer circumferential surface of the center yoke 1a. Band-shaped thin copper plates are wound into the U-shaped grooves 1b so as to be flatly buried, and each edge is joined mutually with silver solder or solder. Permanent magnets 3 are fixed onto the internal side faces of each opposite side parallel with the center yoke 1a in the yoke 1. Magnetic flux density in an air gap is increased, and eddy currents flowing through a cylindrical body prevent the inflow of AC magnetic flux to the yoke.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17416987A JPS6419957A (en) | 1987-07-13 | 1987-07-13 | Voice coil-motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17416987A JPS6419957A (en) | 1987-07-13 | 1987-07-13 | Voice coil-motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6419957A true JPS6419957A (en) | 1989-01-24 |
Family
ID=15973912
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17416987A Pending JPS6419957A (en) | 1987-07-13 | 1987-07-13 | Voice coil-motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6419957A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01144351A (en) * | 1987-11-30 | 1989-06-06 | Matsushita Electric Ind Co Ltd | Linear motor |
-
1987
- 1987-07-13 JP JP17416987A patent/JPS6419957A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01144351A (en) * | 1987-11-30 | 1989-06-06 | Matsushita Electric Ind Co Ltd | Linear motor |
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