| 摘要 |
PURPOSE:To reduce generation of trouble by supporting one edge of a motion converting roller by a part of a transfer body and supporting the other edge by the transfer body and a roller supporting member which can relatively shift in the circumferential direction of a rotary shaft and installing a propulsion-force direction switching member onto the transfer body. CONSTITUTION:One edge of a motion converting roller 3 is supported by a transfer body 1, and the other edge is held by the transfer body 1 and a roller supporting member 5 which is relatively shiftable in the circumferential direction of a rotary shaft. A switching member 8 which is interlocked with the roller supporting member 5 and can be operated from outside is installed onto the transfer body 1. Therefore, the roller supporting structure and the transfer structure can be made simple, and the whole can be made compact, and therefore, generation of trouble can be reduced. |
