| 摘要 |
<p>An electric wrench comprises a main body (10) with a head portion (11), a handle (12) and a neck portion (13), a worm gear (21) disposed in a receptacle in the head portion and engaged with a movable jaw (113) on top of the head portion, a flexible member (23) disposed between the worm gear and a major gear wheel (22),
a motor (30) housed in a first open space (14) in the main body and connected to a minor gear wheel (24) below the major gear wheel through a second transmission member electrically connected to a battery (60) in a second open space (15) in the main body, a switch unit (40) electrically connected the motor for controlling the activation of the motor and a side cover (50) detachable for covering the first and the second open spaces. Thereby, the motor can drive a slide motion of the movable jaw through the various transmission parts so as to change the clip size of the electric wrench.</p> |
