Patent ID: 6844511

Claim:
A multi-function control key structure comprising: a springy keybody, said springy key body comprising a flat annular base, an annular flange protruded from one side of said flat annular base, a center through hole surrounded by said annular flange, and a springy plate disposed in said center through hole, said springy plate comprising a center through hole and a plurality of first spring arms and second spring arms equiangularly arranged around the center through hole of said springy plate, said first spring arms being respectively connected to said flat annular base, each of said first spring arms having a middle mounting hole, each of said second spring arms, having a free end terminating in a downwardly extended triggering rod; and a key cap mounted in the center through hole in the annular flange of said springy body, said key cap comprising a bottom wall, a shank perpendicularly downwardly extended from the center of said bottom wall and inserted into the center through hole of said springy plate, a plurality of driving rods perpendicularly downwardly extended from said bottom wall and equiangularly arranged around said shank corresponding to the triggering rods of said second spring arms, and a plurality of locating rods perpendicularly downwardly extended from said bottom wall and equiangularly arranged around said shank and respectively fastened to the mounting holes of said first spring arms to cause said driving rods respectively spaced from the triggering rods of said second spring arms at a predetermined distance.