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Patent Searching and Data


Title:
SCREWDRIVER
Document Type and Number:
WIPO Patent Application WO/2019/167724
Kind Code:
A1
Abstract:
[Problem] To reduce operation load by making a high pressing force on a tip tool holding part unnecessary, and to achieve good operability. [Solution] A screwdriver (1) includes: a brushless motor (10); a spindle (51) that holds a tip tool (63) and can rotate; an electromagnetic clutch (53) that can transmit or interrupt the drive force of the brushless motor (10) to the spindle (51); and a detector (force sensor (58)) that detects movement of the spindle (51) in the axial direction, the electromagnetic clutch (53) transmitting drive force to the spindle (51) when movement of the spindle (51) is detected by the detector.

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JPH0715734A bit holder
Inventors:
KIMURA Kazuya (3-11-8 Sumiyoshi-cho, Anjo-sh, Aichi 02, 〒4468502, JP)
YUEDA Ryuki (3-11-8 Sumiyoshi-cho, Anjo-sh, Aichi 02, 〒4468502, JP)
Application Number:
JP2019/006119
Publication Date:
September 06, 2019
Filing Date:
February 19, 2019
Export Citation:
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Assignee:
MAKITA CORPORATION (3-11-8, Sumiyoshi-cho Anjo-sh, Aichi 02, 〒4468502, JP)
International Classes:
B25B21/00
Domestic Patent References:
WO2012090711A12012-07-05
WO2002068156A12002-09-06
Foreign References:
JP2015058517A2015-03-30
JP2015089611A2015-05-11
JPH0938870A1997-02-10
JPS5286481U1977-06-28
JPH09254046A1997-09-30
US20060237205A12006-10-26
Attorney, Agent or Firm:
ISHIDA Yoshiki (10-30, Higashisakura 1-chome Higashi-ku, Nagoya-sh, Aichi 05, 〒4610005, JP)
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