公开(公告)号：US10651696B2

公开(公告)日：2020-05-12

申请号：US15341384

申请日：2016-11-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Won-ho Kim ,  Sung-hyuk Park ,  Seong-taek Lim ,  Woong Hwang

IPC: H02K1/27 ,  H02K1/28 ,  H02K1/30 ,  H02K15/03

Abstract: A motor is provided. The motor includes a stator, a rotor rotatably disposed in the stator, and a motor shaft provided in the rotor to rotate integrally with the rotor. The rotor includes at least one permanent magnet fixing core, at least one injection fixing core alternately stacked with the at least one permanent magnet core in a direction of the motor shaft, a plurality of permanent magnets inserted at a predetermined interval in the at least one permanent magnet fixing core and the at least one injection fixing core, and an injection ring formed to cover the at least one permanent magnet fixing core, the at least one injection fixing core, and the plurality of permanent magnets. The at least one permanent magnet fixing core is formed to prevent the permanent magnets from becoming separated from the rotor by a centrifugal force, and the at least one injection fixing core is formed to prevent the injection ring from becoming separated from the rotor by the centrifugal force.

公开(公告)号：US09667111B2

公开(公告)日：2017-05-30

申请号：US14310547

申请日：2014-06-20

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  Kyungpook National University Industry-Academic Cooperation Foundation

Inventor： Won-ho Kim ,  Seong-taek Lim ,  Hong-soon Choi ,  Jin-woo Cho

IPC: H02K1/27

CPC classification number: H02K1/2766 ,  H02K1/276 ,  H02K1/2773 ,  H02K1/278

Abstract: Exemplary embodiments disclose a rotor of an electric motor and an electric motor using the same. The rotor includes a core which includes a plurality of protrusion portions which are arranged along an outer circumference of the core and protrude radially to an outer portion of the core, and a plurality of concave portions interposed between the protrusion portions; a plurality of permanent magnets which are respectively disposed at the plurality of concave portions; and a plurality of pole pieces which are disposed at the plurality of concave portions and at outer sides of the plurality of permanent magnets. A length of each of the plurality of pole pieces in an axial direction is shorter than a length of each of the plurality of protrusion portions in the axial direction.