| 摘要 |
A power hand tool 100 includes a housing 10; an electric motor mounted in the housing 10 for provide a rotary motion; a transmission gear set is mounted in the housing 10 and connected with the electric motor; a torsion control device 30 having a first rotary knob 33, which can adjust the maximum torsion output of the transmission gear set while being turned, and a plurality of first dents 333 formed on an internal periphery thereof; an impact device 40 having a second rotary knob 42, which can switch on or off an impact motion generated on the transmission gear set while being rotated, and a plurality of second dents 423 formed on an internal periphery thereof; and a locating device 50 having a holder fixed to the torsion control device and a locating member mounted to the holder, the locating member having two resilient portions, each of which has a convexity engaged with the associated first dents or second dents. |
