| 摘要 |
PROBLEM TO BE SOLVED: To compactly, inexpensively and efficiently magnify and transmit the fine displacement of an electromechanical conversion element to an upper stage by simple constitution by closely interposing the electromechanical conversion elements between a pair of chevron displacement magnification members. SOLUTION: A fine displacement mechanism is constituted of a pair of chevron phosphor-bronze or iron displacement magnification members 1 and 1', the electromechanical conversion elements 2 such as the piezoelectric elements, a pre-load adjustment screw 3, the upper stage 4, a lower stage 5 and a fixed screw 6. Then, the elements 2 are closely held between a pair of magnification members 1 and 1'. As the result, since the chevron interior angleθof a pair of magnification members 1 and 1' is changed according to the elongation and contraction of the elements 2 when the elements 2 elongate and contract in a longitudinal direction, the upper stage 4 is efficiently and accurately moved up and down.
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