Elastic force applying device for electromagnetic clutch or braking device |
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| 申请号 | JP10559682 | 申请日 | 1982-06-18 | 公开(公告)号 | JPS58225233A | 公开(公告)日 | 1983-12-27 |
| 申请人 | Shinko Electric Co Ltd; | 发明人 | KURITA YUTAKA; NAKAGAWA SUSUMU; | ||||
| 摘要 | PURPOSE:To prevent the fatigue breakdown of a spring board due to an increase in the amount of flexure, by forming the spring board of a configuration memory alloy in an apparatus wherein an armature is attracted against the spring board so as to transmit a power when an electromagnetic coil is excited. CONSTITUTION:When an electromagnetic coil 9 is excited, an armature 4 is attracted against a spring board 5 by a magnetic path phi formed through a fixed core 12 to be connected to the fixed core 12, whereby the rotation of a driving shaft 2 is transmitted to a shaft 9 to be driven. The spring board 5 is formed of a configuration memory alloy so as to have a flexure-load characteristic shown in the figure. By this constitution, a stress generated in the spring board 12 when the amount of flexure thereof is increased with an increase in a gap 10 between the armature 4 and the fixed core 12 is suppressed to be constant approximately, and thereby the fatigue breakdown of the spring board 5 can be prevented effectively. | ||||||
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| 说明书全文 | |||||||
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