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US 2017/0334000 A1Published application
Self-locking drill chuck
AssigneeZhejiang Sanou Machinery Co. Ltd.
InventorsWenhua ZHOU, Qirong LU
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AssigneeZhejiang Sanou Machinery Co. Ltd.
InventorsWenhua ZHOU, Qirong LU
Estimating the term…
A self-locking drill chuck is disclosed herein; its rotating sleeve is provided with a convex leaf spring fixed on a rotating sleeve on both ends, its nut or the ring fixedly connected with the nut is provided with a first groove and a second groove matching with the convex portion of the convex leaf spring, and the self-locking structure includes 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, the rotating sleeve is provided with a first part compressing the leaf spring and a second part compressing the locking block. This invention can achieve positioning fit of metals, and self-locking and unlocking switching is realized by the lever, the interference phenomenon in the self-locking structure will not occur, which has a stronger holding force for the self-locking state of the drill chuck, greatly enhancing the operating feeling and increasing the self-locking force.
A self-locking drill chuck, comprising a drill body, a nut, a clamping jaw, a self-locking structure, and a rotating sleeve, wherein the self-locking structure comprises a ring tooth and a locking piece, the locking piece has a locking end engaged with the tooth, the locking piece is arranged at the part rotating with the nut, the ring tooth is arranged on the drill body or a part rotating with the drill body, the tooth face of the ring tooth is directed toward the front of the drill chuck, the rotating sleeve is connected with a part for driving the locking piece to allow the locking end of the locking piece to be inserted into the tooth of the ring tooth.
Dependencies are inferred from the claim text.