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Title:
SEALED EXTERNAL ROTOR ELECTRIC MOTOR STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2020/143122
Kind Code:
A1
Abstract:
Disclosed is a sealed external rotor electric motor structure, comprising a shell-type rotor, a self-aligning bearing seat, an oil seal, a concentric shaft, a stator and a magnetic steel. The self-aligning bearing seat is arranged in the shell-type rotor, a through-type bearing chamber concentric with the shell-type rotor is arranged in the self-aligning bearing seat, the front end of the through-type bearing chamber is opened, the front end face of the shell-type rotor is provided with a concentric shaft fixing hole, the concentric shaft is arranged in the through-type bearing chamber, the front end of the concentric shaft is extended into the concentric shaft fixing hole, the concentric shaft is provided with a seal groove located in the concentric shaft fixing hole, the concentric shaft is provided with a bearing located in the through-type bearing chamber, and the oil seal is arranged on the self-aligning bearing seat for realizing sealing of the tail end of the shell-type rotor. By means of the sealed external rotor electric motor structure of the present invention, the rotating stability of the shell-type rotor is high, and the sealing effect of the shell-type rotor in the process of rotating is improved.

Inventors:
WANG XIAN (CN)
DING NINGNING (CN)
Application Number:
PCT/CN2019/080440
Publication Date:
July 16, 2020
Filing Date:
March 29, 2019
Export Citation:
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Assignee:
GP ENTPR CO LTD (CN)
International Classes:
H02K5/10
Foreign References:
CN109474109A2019-03-15
CN209233623U2019-08-09
CN202395571U2012-08-22
CN205356067U2016-06-29
CN101799075A2010-08-11
EP1052410A32001-09-12
Attorney, Agent or Firm:
SUZHOU GROUNZE INTELLECTUAL PROPERTY AGENCY CO., LTD. et al. (CN)
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