Ratchet wrench with electric assistance

A ratchet wrench with electric assistance, comprising:

• a wrench body having a grip end and a head end, the head end having a housing groove;
• a ratchet device rotatable disposed in the housing groove along a first axis, the ratchet device having an annular tooth;
• a pawl device disposed in the housing groove and optionally geared with the annular tooth;
• a power device disposed on the wrench body, the power device having a transmission axis driven to rotate by a power;
• the transmission axis comprising a transmission gear disposed along a second axis, and the second axis arranged in perpendicular to the first axis;
• a gear device disposed in the housing groove along a third axis and movable between a first position and a second position with respective to the wrench body;
• the third axis arranged in parallel to the first axis;
• the gear device comprising a first gear, a second gear, and an operation shaft passing through the first gear and the second gear;
• the operation shaft driving the first gear and the second gear to be optionally geared with the transmission gear for transmitting a motivation force to the annular tooth;
• and
• a switch device rotatable disposed on the wrench body and connected with the operation shaft;
• the switch device driving the operation shaft to move with respect to the wrench body;
• when the gear device is at the first position, the first gear leaves the transmission gear, and the second gear is geared with the transmission gear, so that the transmission gear drives the annular gear to rotate through the second gear, such that the ratchet device rotates in a counterclockwise direction;
• when the gear device is at the second position, the second gear leaves the transmission gear, and the first gear is geared with the transmission gear, so that the transmission gear drives the annular gear to rotate through the first gear, such that the ratchet device rotates in a clockwise direction.