DAMPER

A damper has a simple structure yet exhibits appropriate damping force according to a relative displacement amount. The damper includes: a line-shaped member 32 wound around an outer peripheral surface of a piston 3 which makes a relative motion in a cylinder 2; and a viscous fluid which is made to adhere to the line-shaped member 32 and exhibits viscous damping force. The relative motion of the cylinder 2 and the piston 3 produces tension, and in the line-shaped member 32, as an amplitude is smaller, its contiguously wound portions each try to deform so as to twist along a circumferential direction of the line-shaped member 32 itself, and as the amplitude is larger, the contiguously wound portions more tend to try to deform as a unit. When the amplitude is small, frictional resistance decreases, resulting in the smooth motion of the piston 3, and appropriate damping force is obtained due to the viscous damping force of the viscous fluid. When the amplitude is large, as a result of the increased tendency that the contiguously wound portions of the line-shaped member 32 try to deform as a unit, friction damping force acts relatively greatly.