Title:
ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2016/158131
Kind Code:
A1
Abstract:
Provided is an electric tool for which size increase can be limited and which is capable of stably rotating a distal end tool. The electric tool is characterized in being provided with: a brushless motor (1) with a rotating rotor (1A); a rectifier circuit (71) for rectifying AC voltage; a smoothing capacitor (721) for smoothing the rectified AC voltage to a pulsating voltage; an inverter circuit (73) for outputting the smoothed voltage to the brushless motor by performing a switching operation; and a deceleration mechanism (9) for decelerating the rotation of the rotor and transmitting same to the distal end tool, the deceleration mechanism comprising a rotor-side driving part (94), driven parts (92, 95) for transmitting rotational force to the distal end tool-side, and elastic members (13) for transmitting the rotational force of the driving part to the driven parts.
Inventors:
KUMAKURA TAKERU (JP)
KURAGANO SHINJI (JP)
KURAGANO SHINJI (JP)
Application Number:
PCT/JP2016/055841
Publication Date:
October 06, 2016
Filing Date:
February 26, 2016
Export Citation:
Assignee:
HITACHI KOKI KK (JP)
International Classes:
B25F5/00; B23D45/16; B23D47/12; B27B5/29; B27B9/00
Domestic Patent References:
| WO2009151059A1 | 2009-12-17 |
Foreign References:
| JP2012196725A | 2012-10-18 | |||
| JPS5986444A | 1984-05-18 | |||
| JP2009130966A | 2009-06-11 | |||
| JP2007275999A | 2007-10-25 | |||
| JP2013163229A | 2013-08-22 | |||
| JP2002051589A | 2002-02-15 | |||
| US20150256111A1 | 2015-09-10 |
Other References:
See also references of EP 3278932A4
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