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Self-locking drill chuck

A drill chuck, self-locking technology, applied in the direction of tool joints, tool holder accessories, chucks, etc., can solve the problems of unfavorable drill chuck cost control, cumbersome drill chuck installation steps, complicated connection structure, etc. The effect of soft hand feel, improved performance and simplified assembly steps

Pending Publication Date: 2021-02-09
ZHE JIANG SAN OU MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the self-locking drill chuck, in order to prevent it from exiting the self-locking state due to inertia, the corresponding connection structure will be set up, but the setting of these structures will cause cumbersome installation steps of the drill chuck and complicated connection structure, which is not conducive to the drill chuck cost control

Method used

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  • Self-locking drill chuck
  • Self-locking drill chuck
  • Self-locking drill chuck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Refer to attached picture. The self-locking drill chuck provided by the present invention includes a rotating sleeve 8, a drill body 1, a nut 2, a jaw 3, and a self-locking structure. The self-locking structure includes teeth 11 and shrapnel 6, and the teeth 11 are directly in the The drill body 1 is installed on the drill body 1 or as an independent ring gear part. The elastic piece 6 is located on the periphery of the tooth 11 and rotates synchronously with the nut 2. The length of the elastic piece 6 meets its The position where the bending angle around the drill body is greater than 180°, the first end of the elastic piece 6 is the locking end 61 matched with the tooth 11, and the rotating sleeve 8 has a first part connected with the elastic piece 6 in a self-locking state 84 and the second part 83 connected with the elastic piece 6 in the non-self-locking state, the elastic piece 6 has a locking end protrusion 62 near the locking end, and a connecting protrusion 63...

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PUM

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Abstract

The invention provides a self-locking drill chuck. Multiple keys are arranged at the front end of a nut, an elastic sheet of a self-locking mechanism is limited between the keys of the nut by virtue of the elasticity of the elastic sheet so as to be assembled on the nut, the second end of the elastic sheet penetrates into the gap between the keys and a drill body from the position between a pair of keys in the multiple keys and is attached to the keys through the elasticity of the elastic sheet, and a connecting protrusion of the elastic sheet is arranged on the part, located between the pairof keys, of the elastic sheet. The lock end of the elastic sheet is positioned in the gap between the key, corresponding to the lock end, in the multiple keys and the drill body. The self-locking drill chuck can be prevented from retreating from a self-locking state due to the inertia effect, assembling is convenient, and the self-locking performance can be further improved.

Description

technical field [0001] The present invention relates to drill chucks, and more particularly to fingertight drill chucks. Background technique [0002] In the prior art, the drill chuck is equipped with a drill body, jaws, nuts, bearings, gaskets, rotating sleeves, and rear sleeves. By rotating the nut, the jaws are driven to move forward or backward to make the chuck clamp Tighten or loosen drilling tools. The self-locking structure in the drill chuck is a structure that prevents the drill from being loosened by the reaction force it receives when the drill chuck is in operation. teeth to match. For the self-locking drill chuck, in order to prevent it from exiting the self-locking state due to inertia, the corresponding connection structure will be set up, but the setting of these structures will cause cumbersome installation steps of the drill chuck and complicated connection structure, which is not conducive to the drill chuck cost control. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/12
CPCB23B51/12B23B51/123B23B31/123B23B2231/38B23B31/1238
Inventor 周文华童学标
Owner ZHE JIANG SAN OU MASCH CO LTD