Chuck and power tool using the same

Abstract

The present invention relates to a collet comprising a core for mating with an output shaft of a power tool, a plurality of jaws movably arranged relative to the core, and a jaw actuator, the core having a mechanism for accommodating at least part of the working The cavity of the accessory, the relative movement of the jaw actuator and the core can drive the plurality of jaws to close relative to the core to lock the working accessory or open to release the working accessory, characterized in that: the clamp The head also includes a supporting device at least partially arranged in the cavity, and the supporting device keeps the working accessory in the cavity, and the supporting device includes at least two supporting parts, and the supporting parts have The pressing surface capable of pressing against the working accessory is an arc-shaped surface. The invention also relates to a power tool using the chuck described above. The collet and the power tool provided with the collet disclosed by the present invention can avoid the possible safety problems of the operator holding the working head by hand when assembling and disassembling the working head, and have a compact structure.

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

Images