Zhejiang Sanou Machinery Co. Ltd.

Qirong Lu

Wenhua Zhou

A self-locking drill chuck includes rotating sleeve provided with a convex leaf spring fixed on a rotating sleeve on both ends, its nut or the ring fixedly connected with the nut provided with a first groove and a second groove matching with the convex portion of the convex leaf spring, and the self-locking structure including a ring tooth on the drill body and a rotatable locking block disposed on the nut or ring fixedly connected to the nut. The nut or ring fixedly connected to the nut is also provided with a leaf spring, and the rotating sleeve is provided with a first part compressing the leaf spring and a second part compressing the locking block. The self-locking drill chuck can achieve positioning fit of metals, and self-locking and unlocking switching is realized by the lever without the interference phenomenon in the self-locking structure.

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Zhejiang, China

Qirong Lu