| 摘要 |
A driving mechanism using shape memory alloys comprises a first and a second shape memory alloys coils ( 1, 2 ), a pin-like drive member ( 3 ) connected to each of the shape memory alloys coils ( 1, 2 ) extending in the axis direction, a substrate ( 4 ) having a wiring pattern ( 11 ) and a drive circuit ( 4 a) to supply current to the shape memory alloys coils ( 1, 2 ), and a magnetic latch part ( 9 ) to hold the drive member ( 3 ), and the magnetic latch part ( 9 ) has a latch position in the axis direction of the drive member ( 3 ), the drive circuit ( 4 a) selectively current-drives the first and the second shape memory alloys coils ( 1, 2 ), the driven first or second shape memory alloys coils ( 1, 2 ) is heated and compressed to move the drive member ( 3 ) in the axis direction, and magnetic bodies ( 9 a, 9 b) provided to the drive member ( 3 ) is magnetically fixed at the latch position, thereby fixed and held in the axis direction.
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