Damper Device

Abstract

To enable a seal member as a component of a damper device to make sliding contact with an inner wall of a cylinder body in the same manner as much as possible.SOLUTION: A piston body 2 comprises: a first holding part 2a which faces base parts 4a of a seal member 4 from one space 5 side; and a second holding part 2b located inside a lip part 4b of the seal member 4, and facing the base parts 4a from the other space 6 side. Between the base parts 4a constituting longitudinal portions 4c at two points which face a wider side face part 1c of a cylinder body 1 of the seal member 4, a regulation part 4f which is formed so as to make contact with the first holding part 2a on the side of a moving center axis x of the piston body 2 relative to the base part 4a when the piston body 2 moves to the one space 5 side, and which maintains postures of longitudinal portions 4c of the seal member 4 is provided.SELECTED DRAWING: Figure 6

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