Patent ID: 11890727
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. An electric power tool comprising:
a driving shaft that is rotated by a motor;
an output shaft on which a front-end tool is attachable; and
a torque transmission mechanism that transmits a torque produced by the rotation of the driving shaft to the output shaft, wherein
the torque transmission mechanism includes a magnet coupling including a driving magnet member coupled to a side of the driving shaft and a driven magnet member coupled to a side of the output shaft,
the driving magnet member and the driven magnet member are provided such that respective magnetic surfaces face each other, S-poles and N-poles being alternately arranged on each of the magnetic surfaces, and
the magnet coupling has a function of applying an intermittent rotary impact force to the output shaft.