Positec Power Tools (suzhou) Co., Ltd.

Positec Power Tools Co., Ltd.

Lianbao Wang

Jingtao Xu

Hongfeng Zhong

Warren Brown

Harry Szommer

Graham Gerhardt

Mingjian Xie

The present embodiment discloses a hand-held tool and a clamping device thereof. The clamping device of a hand-held tool includes: a mounting base; a clamping unit configured to fasten a working tool in an axial direction; and an operation assembly, including an operating member and a driving member, where the operating member is capable of performing compound motion relative to the mounting base, and the operating member is operable to drive the driving member to selectively mate with and disengage from the clamping unit. In this way, the hand-held tool of the present embodiment has the clamping device. By way of compound motion, not only comfort of operation can be achieved, but also parts can be saved, thereby making the structure simpler and more reliable.

Hand-held tool and clamping device thereof

The present invention discloses a speed changing tool, comprising: a housing; a motor, disposed in the housing and outputting rotary power; a trigger switch, used for starting and stopping the motor; an output shaft; a gear transmission, which is disposed between the motor and the output shaft to transmit rotation of the motor to the output shaft, and comprises at least one group of gear system, a gear ring meshed with the gear system and a moving member, wherein the moving member can be moved between a first position and a second position and when in the first position and the second position, the moving member has different states relative to the housing, such that the gear transmission outputs a rotary speed of the motor with different speed reduction ratios; the variable speed tool further comprises a drive mechanism for driving the moving member to move between two positions, when a load of the output shaft reaches or exceeds a preset value, the drive mechanism can drive the moving member to move to the second position from the first position, the trigger switch can push the drive mechanism to drive the moving member to move to the first position from the second position when the trigger switch comes back from a work position to an original position.

Speed-changing tool

Growing community of inventors

Suzhou, China

Lianbao Wang