| 摘要 |
A power tool and an operation method therefor for fast locking and releasing a working accessory. The power tool comprises a housing (2), a motor (18) disposed in the housing, a main shaft (16) driven by the motor to output rotary power, and a chuck (3) used for locking and releasing a working accessory. The chunk comprises a core body (12) connected to the main shaft, multiple claws (14) movably disposed relative to the core body, and a jacket (13) sleeved on an outer side of the core body. Driven by relative movement between the jacket and the core body, the multiple claws are folded and unfolded relative to the core body. The power tool also comprises a control apparatus. The control apparatus can operably lock a position of the jacket or the core body relative to the housing, or can control the motor to be started according to a preset rotation direction and accordingly, relative movement is generated between the jacket and the core body. |
