Control device of a hi-hat cymbal

Claim 1

A control device coupled between a pull rod of a stand of a hi-hat cymbal and a foot pedal thereof and driven by the foot pedal to operate a pair of cymbals of the hi-hat cymbal, the control device comprising: a base frame having an annular coupling portion adapted for receiving the pull rod of the cymbal stand therethrough; a universal joint having a top end provided with a screw hole fastened to the pull rod of the cymbal stand and a bottom end terminating in a coupling rod; a coupling block coupled to said universal joint and suspended in said base frame, said coupling block comprising a top opening, a vertical coupling hole disposed in said top opening and coupled to the coupling rod of said universal joint, a horizontal screw hole perpendicularly connected to said vertical coupling hole, a tightening up screw rod threaded into said horizontal screw hole to hold down the coupling rod of said universal joint in said vertical coupling hole, and two horizontal through holes at two opposite sides of said top opening; two balance bars respectively inserted through the horizontal through holes of said coupling block, each of said balance bars having two screw rods at two opposite ends thereof; a first connecting block and a second connecting block respectively connected between the screw rods of said balance bars by nuts and disposed in parallel to said coupling block at two opposite sides thereof, said connecting blocks having respective through holes adapted for passing the screw rods of said balance bars therethrough; a linking mechanism having a top end connected to said first connecting block and a bottom end coupled to the foot pedal of the hi-hat cymbal; and counterweight means coupled to said second connecting block to maintain said balance bars in a horizontal position.