Chuck and power tool utilizing same

Abstract

The invention relates to a chuck which comprises a core body used for being matched and connected with an output shaft of a power tool, a plurality of clamping jaws movably arranged relative to the core body and a clamping jaw actuating piece. The core body is provided with a cavity containing at least parts of work accessories, and the clamping jaw actuating piece moves relative to the core body to be able to drive the multiple clamping jaws to fold relative to the core body so as to lock the work accessories or unfold to release the work accessories. The chuck is characterized in that the chuck further comprises supporting devices, wherein at least parts of the supporting devices are arranged in the cavity; the supporting devices keep the work accessories in the cavity in a drop-proof mode, and each supporting device comprises at least two supporting pieces which are provided with abut-pressing surfaces capable of pressing the work accessories in an abutting mode; and the abut-pressing surfaces are arc-shaped surfaces. The invention further relates to the power tool utilizing the chuck. According to the chuck and the power tool provided with the power chuck, the condition that the chuck is supported by hands when a working head is assembled or disassembled by an operator, and therefore the safety problem probably exists can be avoided, and the structure is compact.

Description

technical field [0001] The invention relates to a collet and a power tool using the collet. Background technique [0002] Power tools typically include hammers, drills, screwdrivers, and impact drills, among others. When using these power tools, the operator often assembles and disassembles the working head as required. In the process of assembling and disassembling the working head, it is often necessary to support the working head by hand, especially for gun drill power tools with automatic clamping, often the working head has been clamped, but the output shaft of the power tool is still rotating , so that the working head will rotate with the output shaft. At this time, the operator does not know whether the working head has been clamped, but will continue to support the working head with his hands. At this time, the rotating working head may cut the operator operator's hand, and cause injury to the operator. [0003] In view of this, it is necessary to develop a chuck...

AI Technical Summary

Problems solved by technology

In the process of assembling and disassembling the working head, it is often necessary to support the working head by hand, especially for gun drill power tools with automatic clamping, often the working head has been clamped, but the output shaft of the power tool is still rotating , so that the working head will rotate with the output shaft. At this time, the operator does not know whether the working head has been clamped, but will continue to support the working head with his hands. At this time, the rotating working head may cut the operator operator's hand, causing injury to the operator

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