| 摘要 |
PROBLEM TO BE SOLVED: To provide an actuator which prevents the breakage of a pillarlike magnetostrictive element. SOLUTION: The actuator comprises the pillarlike magnetostrictive element 51, which has one end formed as a fixed end and the other end formed as a free end and extends/contracts axially, a drive coil 54 which generates an electromagnetic field that extends/contracts the pillarlike magnetostrictive element 51 using drive currents, and elastic members (sponges 52a, 52b) arranged on both end faces of the pillarlike magnetostrictive element 51. The pillarlike magnetostrictive element 51 extends/contracts to drive an object (plate 7). COPYRIGHT: (C)2005,JPO&NCIPI
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