JPH0434875U - - Google Patents
Info
- Publication number
- JPH0434875U JPH0434875U JP7261690U JP7261690U JPH0434875U JP H0434875 U JPH0434875 U JP H0434875U JP 7261690 U JP7261690 U JP 7261690U JP 7261690 U JP7261690 U JP 7261690U JP H0434875 U JPH0434875 U JP H0434875U
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- permanent magnet
- plate
- magnet plate
- magnetic circuit
- 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
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Description
第1図は本考案の一実施例による磁気回路の断
面図、第2図は従来の磁気回路の断面図、第3図
は第2図の磁気回路を用いた従来のボイスコイル
モータの斜視図である。
1……軸、2……スイングアーム、3……コイ
ル、4,5……ヨーク板、6……柱ヨーク、7a
,7b……永久磁石板。
Fig. 1 is a sectional view of a magnetic circuit according to an embodiment of the present invention, Fig. 2 is a sectional view of a conventional magnetic circuit, and Fig. 3 is a perspective view of a conventional voice coil motor using the magnetic circuit of Fig. 2. It is. 1... Axis, 2... Swing arm, 3... Coil, 4, 5... Yoke plate, 6... Pillar yoke, 7a
, 7b...Permanent magnet plate.
Claims (1)
ヨーク板より小型の永久磁石板を一方のヨーク板
の対向面側に密着固定して、この永久磁石板と他
方のヨーク板との一定の間隔部分にコイルに作用
させる磁場を形成する磁気回路であつて、前記他
方のヨーク板の対向面側における前記永久磁石板
に対向する領域のみをその他の周辺領域より凸に
形成したことを特徴とするボイスコイルモータの
磁気回路。 Two yoke plates are arranged parallel to each other, and a permanent magnet plate smaller than the yoke plates is closely fixed to the opposing surface of one of the yoke plates, so that the permanent magnet plate and the other yoke plate are connected to each other. A magnetic circuit that forms a magnetic field that acts on a coil at certain intervals, in which only the area facing the permanent magnet plate on the opposing surface side of the other yoke plate is formed to be more convex than the other peripheral area. The featured magnetic circuit of the voice coil motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7261690U JPH0434875U (en) | 1990-07-10 | 1990-07-10 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7261690U JPH0434875U (en) | 1990-07-10 | 1990-07-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0434875U true JPH0434875U (en) | 1992-03-24 |
Family
ID=31610709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7261690U Pending JPH0434875U (en) | 1990-07-10 | 1990-07-10 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0434875U (en) |
-
1990
- 1990-07-10 JP JP7261690U patent/JPH0434875U/ja active Pending
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