| 摘要 |
An electric ratchet wrench includes a driving member rotatably mounted in a body. A pawl device is pivotably mounted to the driving member. A ring gear is rotatably mounted around the driving member. A flexible transmission shaft includes a first end connected to a motor and a second end configured to switch between a meshing state meshed with the ring gear and a disengagement state disengaging from the ring gear. The motor drives the transmission shaft to rotate the driving member. The body can be manually driven to overcome a resistance which is larger than the torque outputted by the motor and which causes a tooth slippage phenomenon between the transmission shaft and the ring gear. |
