Title:
POWER TOOL
Document Type and Number:
Japanese Patent JP2022019199
Kind Code:
A
Abstract:
To provide a power tool that stops driving of a motor before a shock due to operation of a clutch is generated to stabilize accuracy of tightening torque.SOLUTION: A power tool includes: a motor; a tip tool driven by the motor; and a clutch part provided in a rotation force transmission path of the motor and the tip tool. The clutch part is configured to include a ring gear 41 and a pin 51 and has a claw part 43 that moderates torque variation. The claw part 43 has a shape that changes into a ridge shape and a valley shape. A control unit detects a current of the motor and controls the motor to decrease the voltage or the rotation number thereof when the pin 51 runs on the claw part 43.SELECTED DRAWING: Figure 5
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Inventors:
MONZEN TETSUYA
SUZUKI SHOTA
SUZUKI SHOTA
Application Number:
JP2020122895A
Publication Date:
January 27, 2022
Filing Date:
July 17, 2020
Export Citation:
Assignee:
KOKI HOLDINGS CO LTD
International Classes:
B25B23/14; B25B21/00; B25F5/00
Attorney, Agent or Firm:
Aoritsu patent business corporation