| 摘要 |
<p>A piston (13) is reciprocatably mounted in a cylinder hole (12) in a cylinder body (11) having covers (14, 15) at opposite ends.A piston rod (17) protruding from the cover (14) is fixed to the piston (13). A movable stopper (21) for restricting the position of a stroke end of the piston rod (17) is joined by screw thread to a female screw thread (22) formed in the cylinder body (11). The movable stopper (21) is rotated by a driven gear (31), which is a rotation body, and moves in the axial direction while rotating. This changes the position of a stopper surface (24) making contact with the piston (13). The driven gear (31) meshes with and is driven by a drive gear (35), which is a rotation drive member, provided in the cylinder body (11). The outer periphery of the drive gear (35) protrudes from the outer surface of the cylinder body (11). The cylinder body (11), which is an installation member for supporting a fluid cylinder, is installed on the cover (14) or on an outer peripheral surface from which the drive gear (35) does not protrude.</p> |
