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Title:
ELECTRIC MOTOR AND ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2021/244407
Kind Code:
A1
Abstract:
Disclosed in the present application are an electric motor and an electric tool, belonging to the technical field of electric tools. The electric motor comprises: a stator assembly, comprising a stator core, and a winding wound around the stator core, the winding comprising an access end and an output end; a rotor assembly, comprising a rotor shaft extending in a first linear direction; and a terminal assembly, used for connecting or fixing the access end and the output end. The stator core comprises a first type of punching sheets, the first type of punching sheets being provided with connecting arms and special-shaped parts, the special-shaped part being arranged, when the first type of punching sheets are overlapped in a direction parallel to the first straight line, to form an access groove used for connecting the terminal assembly, and the access groove being provided on the outer side wall of the stator core. The electric motor achieves the fixation of an electric motor casing in the circumferential direction of the rotor shaft to avoid relative movement between the stator assembly and the electric motor casing in the direction of the rotor shaft during a working process, thereby improving the working stability of the electric motor.

Inventors:
MENG CHAO (CN)
TANG ZICHUN (CN)
ZHANG YANG (CN)
Application Number:
PCT/CN2021/096597
Publication Date:
December 09, 2021
Filing Date:
May 28, 2021
Export Citation:
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Assignee:
NANJING CHERVON IND CO LTD (CN)
International Classes:
H02K1/18; H02K3/46; H02K5/00; H02K1/12; H02K1/14; H02K1/16; H02K9/06
Foreign References:
CN212381047U2021-01-19
CN206977225U2018-02-06
CN103973068A2014-08-06
CN209709795U2019-11-29
CN104393733A2015-03-04
JP2007259676A2007-10-04
CN110249513A2019-09-17
CN103023262A2013-04-03
CN210490680U2020-05-08
CN105099013A2015-11-25
CN202010499845A2020-06-04
CN202021010608U2020-06-04
CN202120353725U2021-02-08
Other References:
See also references of EP 4012890A4
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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