| 摘要 |
PROBLEM TO BE SOLVED: To provide a shape memory alloy actuator of a simple structure and easy for assembling. SOLUTION: In the shape memory alloy actuator displacing an elastic member by energizing the shape memory alloy elastic member and heating the elastic member at martensite transformation temperature or higher, an end part of the elastic body threadedly attached to an outer circumference can be moved to a narrow electrode collar with a coil joint by the coil shaped shape memory alloy elastic member, the coil joint having a helical groove which the end part of the elastic member is threadedly attached on formed on an outer circumference, an annular electrode collar having a tapered inner surface getting narrow in a threadedly attached end part side of the elastic member on the outer circumference of the coil joint, and a nut threadedly attached to the end part of the coil joint. COPYRIGHT: (C)2004,JPO
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