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US 2021/0229256 A1Published application
Electric power tool
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsMitsumasa MIZUNO, Itaru MURUI, Atsushi NAKAMURA
Life of this patent
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Abstract
A torque transmission mechanism includes a magnet coupling including a driving magnet member coupled to a side of driving shaft driven into rotation by a motor and a driven magnet member coupled to a side of an output shaft on which a front-end tool is attachable. A clutch mechanism is provided between the motor and the torque transmission mechanism. A moment of inertia on the side of the driven magnet member is larger than a moment of inertia on the side of the driving magnet member.
Claims4
An electric power tool comprising:
- a driving shaft that is driven into rotation by a motor;
- an output shaft on which a front-end tool is attachable;
- a torque transmission mechanism that includes a magnet coupling including a driving magnet member coupled to the driving shaft side and a driven magnet member coupled to the output shaft side, a moment of inertia on the side of the driven magnet member being larger than a moment of inertia on the side of the driving magnet member;
- and
- a clutch mechanism provided between the motor and the torque transmission mechanism.
2 more elements
Dependencies are inferred from the claim text.