| 摘要 |
PROBLEM TO BE SOLVED: To provide a cylinder capable of reducing a manually mounting man power required for exposing one of both sides of the cylinder. SOLUTION: In order to expose a side face of a cylinder 1 mounted at both ends at both side walls 6, 7 at an opposite side to the side for mounting a driver 8, its structure is constituted so that the cylinder 1 is driven and a restricting unit 20 is movable in a direction separating from the cylinder 1 at a separate part brought into contact with a threading member 18 clamped at the cylinder 1. |
