| 摘要 |
A cushion mechanism 6 for decelerating a piston rod 30 includes a holder 61 fastened to an end surface of a cylinder portion 42 fitted with an inner peripheral surface of a cylinder tube 10, a plurality of fastening bolts 65 for fastening the holder 61 to the cylinder portion 42, an annular entry portion 62 provided on the piston rod 30 and advancing into the holder 61 and the cylinder portion 42 in the vicinity of the stroke end, a cushion passage 63 formed by penetrating at least one of the plurality of fastening bolts 65 and allowing a working chamber 2 and a discharge port 66 to communicate with each other and leading a working fluid in the working chamber 2 to a discharge port 66, and an orifice portion 64 provided on the cushion passage 63 and applying resistance to a flow of the working fluid. |
