Patent ID: 9556926
Date: 2017-01-31
CPC Classifications: F16F

Claim:
1. A damping-adjustable shock absorber comprising: a piston rod having a piston body with a through hole and an adjustment rod mounted into the through hole of the piston body; a knob connected to a top end of a main body of the adjustment rod and a tapered-end rod set on a bottom end of the main body of the adjustment rod while a tapered-head of the tapered-end rod is inserted into a channel formed on a bottom of the through hole; an insertion hole located at a wall of the piston body and communicated with the channel; a piston that is connected to a bottom end of the piston rod; and a cylinder filled with hydraulic oil and mounted with the piston and a part of the piston rod therein; wherein the adjustment rod further includes a shaft sleeve arranged between the knob and the main body of the adjustment rod; a bottom end of the shaft sleeve is connected to and against the main body of the adjustment rod; the shaft sleeve is disposed with a polygonal hole concavely on a top end thereof and an outer threaded portion therearound; the knob includes a grip portion exposed and projecting from the piston body, a connecting rod connected to and extended from the grip portion, and a polygonal portion formed on the connecting rod and mounted to the polygonal hole of the shaft sleeve; the outer threaded portion is engaged with an inner threaded portion formed in the through hole of the piston body.