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Patent Searching and Data


Title:
POWER TOOL
Document Type and Number:
WIPO Patent Application WO/2019/208106
Kind Code:
A1
Abstract:
The purpose of the present invention is to achieve a miniaturized power tool. Provided is a hammer drill 1A that includes: a brushless motor 10 that is a drive source for a tip tool 20; a control unit for controlling the driving of the brushless motor 10; a motor housing 33 to which the brushless motor 10 is attached; and a handle housing 34 provided with a grip 2. The control unit includes: a switching board 12 and a Hall element board 13; and a converter board 11 on which an electrolytic capacitor 11a is installed. The brushless motor 10 is disposed sandwiched between the electrolytic capacitor 11a, and the switching board 12 and the Hall element board 13, along the axial direction M of a drive shaft 16 that drives the tip tool 20.

Inventors:
NOGUCHI Yuta (1060, Takeda Hitachinaka-City Ibaraki, 02, 〒3128502, JP)
HASHIMOTO Hideyuki (1060, Takeda Hitachinaka-City Ibaraki, 02, 〒3128502, JP)
TAKAHASHI Yuki (1060, Takeda Hitachinaka-City Ibaraki, 02, 〒3128502, JP)
Application Number:
JP2019/014018
Publication Date:
October 31, 2019
Filing Date:
March 29, 2019
Export Citation:
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Assignee:
KOKI HOLDINGS CO., LTD. (15-1, Konan 2-chome Minato-k, Tokyo 20, 〒1086020, JP)
International Classes:
B25F5/00; B23B45/02; B25F5/02
Domestic Patent References:
WO2018061554A12018-04-05
Foreign References:
JP2018057178A2018-04-05
JP2015160290A2015-09-07
JP2017213661A2017-12-07
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