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Patent Searching and Data


Title:
BRUSHLESS DC MOTOR WITH IMPROVED GROUND STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2019/212141
Kind Code:
A1
Abstract:
The brushless DC motor according to the present invention, comprises: a housing 10 comprising a stator 15 in the inside, and having a hollow part 11 in which a rotor 20 coupled to a shaft 21 is positioned in the middle part; an upper bearing 22 coupled to an output side of the shaft 21 to rotatably support the shaft; an upper bearing cover 31 accommodating the upper bearing 22 and covering the hollow part 11; a lower bearing 23 coupled to a lower end of the shaft 21 to rotatably support the shaft; a lower bearing holder 32 accommodating the lower bearing 23 and coupled to a middle lower part of the housing 10; and a first grounding member 50 having an upper end part 50a bendingly coupled to an outer part of the upper bearing cover 31, and a lower end part 50b coupled to a middle part of the lower bearing holder 32, so as to make the upper bearing cover 31 and the lower bearing holder 32 electrically equipotential.

Inventors:
LEE KYOUNG JOO (KR)
YANG HYUN SUNG (KR)
KANG MIN SEOK (KR)
Application Number:
KR2019/002974
Publication Date:
November 07, 2019
Filing Date:
March 14, 2019
Export Citation:
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Assignee:
NEW MOTECH CO LTD (KR)
International Classes:
H02K11/40; H02K5/173; H02K7/08; H02K29/00
Foreign References:
KR101562736B12015-10-23
KR20150106980A2015-09-23
JP2014072908A2014-04-21
JP2013081264A2013-05-02
JP2011067069A2011-03-31
Attorney, Agent or Firm:
LEE, Sung Rok (KR)
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