Internal rotor type nail drive device of electric nail gun

An internal rotor type nail drive device of an electric nail gun, configured inside a machine body of a nailing machine, comprising:

• a nailing rod, slidably configured inside the machine body along a nailing axis, with one end of the nailing rod formed with a transmission part;
• a rotary actuator, including a stator fixed inside a machine case, and a rotor rotatably configured inside the stator in a concentric manner, with even groups of electro-magnetic mutual action components configured in pairs between the stator and the rotor, which can respectively generate electricity and a magnetic field for interaction, each group of the electro-magnetic mutual action components comprising a wire bundle that can generate effective magnetic fields of the same current direction, and a magnetic plate that can generate lines of magnetic force to induce mutual action with the wire bundle;
• said rotor is formed with a power output end, and the power output end is connected to the transmission part of the nailing rod;
• the two neighboring wire bundles can respectively generate electric currents in opposite directions, and the two neighboring magnetic plates can generate lines of magnetic force in opposite polarities so that the two electro-magnetic mutual action components can work together to generate tangential forces in the same rotation direction to drive the rotor to rotate for a specific rotation angle, and, through the power output end and the transmission part, to consequently drive the nailing rod to move for a nailing stroke along an axial nailing direction.