| 摘要 |
The tool includes a motor (115, Figure 2) in functional communication with a drive body 140. The drive body includes an upper gear 140a and a lower gear 140b with a first pinion gear 140c disposed therebetween. A second pinion gear 145 is engaged with the first pinion gear. An idler gear 150 is engaged with the second pinion gear. A ratchet gear (155, Figure 2) is engaged with the idler gear, wherein the ratchet gear is adapted to apply rotational force to a work piece based on torque transmitted by the idler gear. A pawl gear 160 may be resiliently biased against the upper and lower gears to limit rotational movement in a clockwise or counter-clockwise direction. |
