| 摘要 |
PROBLEM TO BE SOLVED: To provide a long-life click mechanism and an electric revolver using the click mechanism. SOLUTION: Regarding the electric revolver, a plurality of click grooves 4 are arranged on the outer peripheral surface of a revolver rotating plate 1, a positioning roller 12 is energized toward the outer peripheral surface of the revolver rotating plate 1 by a tension spring 14 and a lever 10, and in the case of switching to an objective lens other than adjacent objective lenses, the positioning roller 12 is shifted so as not to come in contact with the outer peripheral surface of the plate 1 by pressing the lever 10 by the actuator 15. Then, the rolling friction of the positioning roller 12 and the click groove 4 is carried out, alternatively, the roller 12 is separated from the groove 4, consequently, the wear of the click groove 4 is reduced. COPYRIGHT: (C)2006,JPO&NCIPI
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