| 摘要 |
PROBLEM TO BE SOLVED: To provide a clutch mechanism minimized in penetration of dust by pushing out a spherical body to a position opposed to the through-hole of a first rotator, and partially fitting it with a recessed part provided on the inside surface of a second rotator to rotate the first rotator together with the second rotator. SOLUTION: A substantially cylindrical hollowed first rotator 1 rotatably supported by bearings 51, 52 is provided with a through-hole 11 and a gear part 81, and a slide bar 3 is slidably housed in the internal space of the first rotator 1. The slide bar 3 is slid in the internal space to oppose a major diameter part 31 or minor diameter part 32 to the through-hole 11. A spherical body 4 is arranged in the through-hole 11 of the first rotator 1, and the spherical body 4 is pushed out when the major diameter part of the slide bar 3 reaches the position opposed to the through-hole 11 of the first rotator, and partially fitted to a recessed part 21 provided on the inside surface of a second rotator 2 to rotate the first rotator 1 together with the second rotator 2.
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