Electrical ratchet wrench for fastening or unfastening e.g. nut, has battery assembly received in detachable manner in body and connected to motor in body, and switch electrically connected between motor and assembly

摘要

The wrench has a battery assembly (15) received in detachable manner in a body (10) and connected to a motor (14) in the body. A switch (19) is electrically connected between the motor and the assembly. A planetary gear assembly (16) received in the body has a rotating base (162), a shank (164), planetary gears (166) and a fixed collar (168). A connection collar (17) has an inner surface maintaining the collar (168) in the collar (17).