Title:
HUB-TYPE ELECTRIC DRIVING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/096143
Kind Code:
A1
Abstract:
The present invention relates to a hub-type electric driving device comprising a motor embedded inside a housing that doubles as a motor casing. The hub-type electric driving device of the present invention comprises: a housing having a wheel formed in the shape of a cup, and a cover of which the outer peripheral part is coupled to the opening of the wheel; a motor shaft having both end portions fixedly provided on a body outside of the housing; first and second bearings provided respectively in through-holes, formed in the centers of the wheel and the cover, in order to support the housing in rotating around the motor shaft; and a BLDC motor, which is embedded inside the housing and rotates the housing around the motor shaft, wherein the BLDC motor comprises: a rotor of which a back yoke and a magnet are stacked on a cylindrical inner wall of the wheel; and a stator of which the outer peripheral part faces the magnet of the rotor while having an air gap therewith and of which the central part is coupled to the outer periphery of the motor shaft so as to be fixed thereto, and which is for applying a rotating magnetic field to the rotor, wherein the stator has an integrated core frame of which a plurality of teeth radially extend on the outer periphery of an annular yoke and an inner race coupled to the motor shaft is connected to the inside of the annular yoke through a plurality of bridges.
Inventors:
LEE JONG HOON (KR)
Application Number:
PCT/KR2020/015214
Publication Date:
May 20, 2021
Filing Date:
November 03, 2020
Export Citation:
Assignee:
AMOTECH CO LTD (KR)
International Classes:
B62M6/65; H02K1/14; H02K3/28; H02K3/34; H02K3/52; H02K5/10; H02K5/22; H02K29/00; H02P6/00
Foreign References:
| CN208806688U | 2019-04-30 | |||
| KR20140119296A | 2014-10-10 | |||
| KR20190048470A | 2019-05-09 | |||
| KR20190007907A | 2019-01-23 | |||
| CN208904826U | 2019-05-24 |
Attorney, Agent or Firm:
LEE, Jae Hwa (KR)
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