Drill chuck

The utility model provides a drill chuck which comprises a rotary sleeve, a drill body, a decorative cap, a limiting clamp spring, a nut and a clamping jaw, and the front end of the rotary sleeve is conical; an annular step is arranged at the conical front end of the rotary sleeve, the limiting clamp spring is located at the front end of the rotary sleeve and connected with the drill body to axially limit the rotary sleeve, an annular clamping groove is formed in the inner side of the annular step of the rotary sleeve, and a plurality of clamping feet are arranged at the lower end of a cap body on the outer side of the decorative cap. The decorative cap is fixed to the front end of the rotary sleeve through clamping connection of the clamping feet and the annular clamping grooves. According to the utility model, common application and installation of the clamp spring and the decorative cap can be realized, and the decorative cap can be conveniently and firmly installed at the front end of the rotary sleeve, s