Mechanical power switching apparatus and camera

摘要

If a sun gear is rotated in the clockwise direction, a planetary arm is also rotated in the clockwise direction so as to permit the planetary gear and a transmission gear to operatively mesh. If the sun gear is then rotated in the clockwise direction, a cam plate driven by a pin is rotated in the counterclockwise direction. A first engaging lever is rotated in the clockwise direction by a cam mounted to the rotary edge of the cam plate to release the engagement of the rotary edge of the planetary arm. If the sun gear is rotated in the counterclockwise direction, the planetary arm is rotated in the counterclockwise direction to permit the planetary gear to mesh with an idle gear. The planetary arm is engaged with a second engaging lever to maintain the meshed state between the planetary gear and the idle gear. If the sun gear is then rotated in the counterclockwise direction, a photographic film is wound up within a cartridge.