Patent ID: 6851284

Claim:
Handcuffs comprising a pair of handcuff parts and a connecting structure, wherein each of the handcuff parts comprises: a pair of rectangular base bodies which accommodate both ends of a frame plate, a partition plate interposed between the ends of the frame plate, a pair of pawl pieces and a leaf spring therebetween; a movable arm formed in a semi-circle shape, which is provided at its free end with a ratchet portion formed with dual line of teeth; and a pair of fixed arms formed in a semi-circle shape, which are pivotably connected at free ends thereof to the other end of the movable arm by a pivot pin and are integrally provided at their other ends with the base bodies, and wherein the connecting structure comprises: two frame plates, each of which includes a plurality of hinge members exposed to the outside of the base bodies, forming grooves between the neighboring hinge members and having openings therethrough, and also includes a pair of flat members at its both ends integrally extended from the hinge members to be contained in the base bodies; a plurality of couplings fitted into the grooves of the hinge members of both the frame plates, each of the couplings having openings at its both ends; and hinge axes to be axially fitted into the openings of the hinge members and the openings of the couplings.