| 摘要 |
PROBLEM TO BE SOLVED: To provide a positioning mechanism enabling high-accuracy positioning of two objects. SOLUTION: A positioning mechanism includes a first member, a second member, and a rotational operation portion. The first member includes a first base portion, a first projecting portion projecting from the first base portion, and a first male screw portion provided on the first projecting portion. The second member includes a second base portion, a second projecting portion projecting from the second base portion, and a second male screw portion provided on the second projecting portion. The rotational operation portion includes first and second female screw portions which are respectively engaged with first and second male screw portions. The first and second male screw portions are the same in turning direction but different in screw thread pitch. COPYRIGHT: (C)2009,JPO&INPIT
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