| 摘要 |
An operating device has a pair of linear members ( 43, 44 ) made of a shape memory alloy and contracting axially due to heat generated by electrification and generating tension in the contracting direction, a drive lever ( 19 ) supported to pivot about a pivot shaft ( 19 a), a pair of drive rods ( 33, 34 ) respectively connected to both sides of the drive lever ( 19 ) with the pivot shaft ( 19 a) being disposed between the sides of the drive lever ( 19 ), and a power supply circuit for selectively electrifying the linear members ( 43, 44 ). One end of each of the linear members ( 43, 44 ) is fixed to a stationary member, and the other end is connected to each of the drive rods ( 33, 34 ).
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