| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology capable of suppressing a metallic sound caused by a cylinder and a partitioning member contacting each other, while achieving a higher damping force.SOLUTION: A tubular piston 4 mounted at one end of a rod 5 accommodated inside a cylinder and partitioning the space inside the cylinder includes two grooves (first groove 41 and second groove 42) recessed from an outer circumferential surface thereof and aligned side by side along a centerline direction of the cylinder, and a communication passage 43 communicating an end face on the side of an opening in the centerline direction with the second groove 42, between the two grooves, formed on the side of the opening. A rubber-made sealing member 9 which is an annular member fitted into the second groove 42 communicated with the end face at the side of the opening through the communication path 43 and of which the outer circumferential surface contacts an inner circumferential surface of the cylinder, and a resin-made restrictor ring 10 that is a C-shaped member fitted in the first groove 41 and has an outer circumferential surface positioned closer to the inner circumferential surface of the cylinder than the outer circumferential surface of the piston 4, are further included. |
