Hydraulic cylinder in which the cushion state is controlled in multiple stages in a seat cushion device for a vehicle using an air damper and a hydraulic cylinder

摘要

[designation];Hydraulic cylinder in which the cushion state is controlled in multiple stages in a seat cushion device for a vehicle using an air damper and a hydraulic cylinder.;[Achievement to be solved];Since the conventional method is adapted to a good road condition, it is impossible to have a good ride feeling when the road conditions are different, and the effect of shock mitigation is inadequate on a road with severe unevenness.;[Resolution];The piston rod 20 and the lower part of which the multi-stage fluid passage 22 and the upper working shaft insertion hole 21 are formed in the center so as to conduct with each other, and the through holes 23 penetrated from the inside to the outside are formed in the lower side. Insert the working shaft 10 having the appropriate numbers of grooves 11.12.1.3 of different widths so that the grooves are in the same position as the through hole 23 of the piston rod 20, and by adjusting the lever. Configured to be regulated.