Title:
WORK MACHINE AND WORK MACHINE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/220991
Kind Code:
A1
Abstract:
In the present invention, a housing is divided into a front-side housing and a rear-side housing, and the rear housing side is designed according to the motor to be used therein, thereby standardizing the parts, and reducing the costs, of a work machine. A work machine (power tool) according to the present invention comprises a motor 20 that drives a bit, a main housing 10 that can be split in the left-right direction, a case 3 connected to a front-side opening of the main housing 10, and a rear cover 60 connected to a rear-side opening thereof. The main housing 10 comprises a barrel 11 having openings on the front-side and rear-side, and a handle 12. The brushless motor 20 is housed within a space defined by the barrel 11 of the main housing 10, and the rear cover 60. A stator core 21 comprises a protruding part on the front side thereof, and is supported by a recessed part provided in the inner wall of the barrel 11. The rear cover 60 holds only a bearing 29 that bears a rotating shaft without supporting the stator core 21 of the motor 20.
Inventors:
NAKAZAWA MANAMI (JP)
MURAKAMI TAKUHIRO (JP)
MURAKAMI TAKUHIRO (JP)
Application Number:
PCT/JP2021/016539
Publication Date:
November 04, 2021
Filing Date:
April 23, 2021
Export Citation:
Assignee:
KOKI HOLDINGS CO LTD (JP)
International Classes:
B25F5/02; B25F5/00; H02K1/18; H02K5/00
Domestic Patent References:
| WO2018163561A1 | 2018-09-13 |
Foreign References:
| JPS52167508U | 1977-12-19 | |||
| JP2018033238A | 2018-03-01 | |||
| JP2008296289A | 2008-12-11 | |||
| JP2018118380A | 2018-08-02 | |||
| JP2019000936A | 2019-01-10 | |||
| JP2020061830A | 2020-04-16 | |||
| JP2014087202A | 2014-05-12 | |||
| JP2006211774A | 2006-08-10 | |||
| JP2017132006A | 2017-08-03 | |||
| JP2015107554A | 2015-06-11 |
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