Strength-boosting drill chuck

The invention provides a strength-boosting drill chuck comprising a drill body, a nut and a clamping claw, which the nut and the clamping jaw forms a threaded connection, and the drill body is provided with an inclined clamping claw hole for the clamping claw to slide forward and backward along the clamping claw hole; wherein the drill chuck is provided with a strength-boosting structure of the connecting force of the nut clamping claw, which is provided with a liquid plastic component, and the structure for exerting force and transmitting force to the liquid plastic component, which enables the force on the liquid plastic component to be transmitted to the nut. The invention can use the liquid plastic component to transmit force, greatly enhance the binding force between the nut and the clamping claw, and increase the force to resist the reverse force and the inertia force. Whether it is a hand tight drill chuck or a drill chuck with self-locking function, it can cope with the adverse effects caused by various reasons on the drill chuck to hold the drill bit and keep the locking state, and significantly improve the properties of the drill chuck, and prevent loosening during drilling.