Patent ID: 6918449

Claim:
A magnetic impact tool for magnetically generating a rotational impact force in a non-contact manner, comprising: a motor for generating rotational force, a drive shaft rotatably driven by the motor, a magnetic hammer rotatably moved in a coupled state with the drive shaft, a magnetic anvil which faces the magnetic hammer and to which the rotational force is transmitted by magnetic coupling, with one of the opposing surfaces of the magnetic hammer and magnetic anvil having a magnetic pole, and the other having a magnetic pole or magnetic body; an output shaft rotated by the magnetic anvil; a magnetic bypass device that bypasses the magnetic flux between the magnetic anvil and the magnetic hammer, and changes the state of magnetic coupling therebetween, and a changing device that changes the bypass quantity of the magnetic flux with the magnetic bypass device, with the torque transmitted from the magnetic hammer to the magnetic anvil being changed in accordance with the change in bypass quantity of the magnetic flux varied by the changing device.