Patent ID: 9550545
Date: 2017-01-24
CPC Classifications: B62K,F16F

Claim:
1. A shock absorber comprising: a cylinder in which fluid is sealed; a piston that is slidably fitted into the cylinder; a piston rod that is coupled to the piston and extends to an outside of the cylinder; and a valve mechanism that controls a flow of the fluid caused by sliding of the piston in the cylinder, wherein the valve mechanism includes: when the fluid does not flow in the valve opening direction of the valve body, the fail-safe valve is urged by the first elastic body to thereby come into contact with the valve body and close the channel, when the fluid flows in the valve opening direction of the valve body, the fail-safe valve is spaced from the valve body by a fluid pressure to open the channel, and when the valve body moves most in the valve opening direction from the valve seat, the fail-safe valve is brought into contact with the valve body, the channel is closed, and a supporting portion of the valve body supports a part of the fail-safe valve, and, when the fluid flows in the valve opening direction of the valve body, at least a part of the fail-safe valve, which is in contact with a non-supporting portion other than the supporting portion of the valve body, is spaced from the valve body by the fluid pressure to open the channel.