Patent ID: 8991570
Filing Date: 2015-03-31
Classification: F16F

Abstract:
1. A cylinder apparatus comprising: a cylinder in which a fluid is enclosed; a valve member which is fitted in the cylinder and divides the inside of the cylinder into at least two chambers; a rod, an end of which extends to the outside of the cylinder; a flow path which is provided in the valve member and through which the fluid circulates when the rod is moved; a valve which opens and closes the flow path; and a spring member which presses the valve in an axial direction, wherein the spring member comprises: a first spring which comes into contact with the valve in a state in which the valve closes the flow path; and a second spring which does not come into contact with the valve in the state in which the valve closes the flow path and comes into contact with the valve in a state in which the valve opens the flow path.