| 摘要 |
PURPOSE:To simplify structure by installing each swing lever of a clutch mechanism onto the second rotary body and installing a movable member for the switching to the non-press-contact state by pressing the edge parts in the direction along a rotary supporting shaft at a same time. CONSTITUTION:Each swing lever 17 for switching the press-contact state and the non-press-contact state between the second rotary body 16 and the first rotary body 10 through the action of one edge of the swing lever onto the second rotary body 16 is installed for the second layer body 16. Each pivotal supporting point 18 for the swing lever 17 is positioned close to the second rotary body 16, and the other edge of the swing lever 17 is extended close to the rotary supporting shaft 13 of the first rotary body 10, and a movable member 19 for switching to the noncontact state by the pressing of the other edge of the swing lever 17 in the direction along the rotary supporting shaft 13 is installed. Therefore, the need of installing a plurality of clutch mechanism for switching a plurality of second rotary bodies is avoided, simplifying structure. |
