Patent ID: 8794401
Filing Date: 2014-08-05
Classification: F16F,F16J

Abstract:
1. A fluid shock absorber comprising: a cylinder; a cylinder-inserted body inserted into the cylinder and performing a relative displacement in an axial direction at a relative displacement speed with respect to the cylinder; a damping force generating mechanism that generates a fluid damping force against the relative displacement of the cylinder-inserted body with respect to the cylinder in the axial direction; a seal member including a ring-shaped sliding surface and interposed between the cylinder and the cylinder-inserted body; and a frictional resistance regulating mechanism provided in the cylinder, the frictional resistance regulating mechanism regulating a frictional resistance between the seal member and the cylinder-inserted body, so that the frictional resistance regulating mechanism including wherein the generator is configured to increase a voltage of the direct-current power as the relative displacement speed between the cylinder-inserted body and the cylinder in the axial direction increases, all of the direct-current power generated by the generator being directly applied to the actuator, wherein the direct-current power is directly impressed on the actuator so that no controller regulates the direct-current power applied to the actuator, the actuator is constituted by a polymer actuator which deforms upon impression of the direct-current power to the polymer actuator and is configured to enlarge in diameter as the direct-current power impressed on the polymer actuator increases, the seal member comprises an oil lip that is disposed on a radially inner side of the actuator and is supported by the cylinder so as to be in contact elastically with the cylinder-inserted body, and the actuator and the generator are provided separately.