MOTOR - LG INNOTEK CO LTD

Title:

MOTOR

Document Type and Number:

WIPO Patent Application WO/2019/059715

Kind Code:

A3

Abstract:

An embodiment provides a motor comprising: a stator including a through hole; a cylindrical rotor which is disposed in the through hole; a rotor center shaft which is formed in the central region of the rotor and to which a rotary shaft is coupled; and a first magnet and a second magnet which are disposed between the stator and the rotor, wherein: the rotor includes an outer contour portion and a patterned portion formed between the outer contour portion and the rotor center shaft; the patterned portion includes a plurality of unit patterns and a hollow portion formed in each of the unit patterns; the outer contour portion includes an outer circumferential surface on which the first magnet and the second magnet are disposed and an inner circumferential surface which comes in contact with the plurality of unit patterns; the inner circumferential surface of the outer contour portion further includes a first protrusion portion protruding in a first direction toward the rotor center shaft; and in the first direction, the maximum length of the first protrusion portion is greater than the maximum length of each of the unit patterns.

Inventors:

JUNG HYO YUN (KR)
LEE DONG KEUN (KR)
WON JU YEON (KR)
BAE SEOK (KR)

Application Number:

PCT/KR2018/011250

Publication Date:

May 09, 2019

Filing Date:

September 21, 2018

Export Citation:

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Assignee:

LG INNOTEK CO LTD (KR)

International Classes:

H02K1/27; H02K1/22; H02K21/22

Foreign References:

JP2010220388A	2010-09-30
JP2017112764A	2017-06-22
JP2014045630A	2014-03-13
JP2000228839A	2000-08-15
EP2757663A1	2014-07-23

Other References: