公开(公告)号：US20210281133A1

公开(公告)日：2021-09-09

申请号：US17191894

申请日：2021-03-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ukho SEO ,  Deokjin KIM ,  Yongwoo NAM ,  Jaewoong JUNG

IPC: H02K1/27 ,  H02K1/30 ,  D06F37/30

Abstract: A washing machine includes a motor. The washing machine includes a cabinet, a tub arranged inside the cabinet, a drum rotatively arranged inside the tub, and the motor. The motor includes a stator arranged on the rear wall of the tub, and a rotor. The stator is arranged to rotate by electromagnetically interacting with the stator. The rotor includes a plurality of rotor cores alternatingly arranged with a plurality of magnets in a radial form. Each of the rotor cores includes a body, a tooth formed in the front end part of the body, a first groove formed in the upper part of the body, and a second groove formed in the lower part of the body. A partition between the first and second grooves constitutes a part of the body providing an interval between the first and second grooves.

公开(公告)号：US20240283312A1

公开(公告)日：2024-08-22

申请号：US18653208

申请日：2024-05-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yongwoo NAM ,  Deokjin KIM ,  Jinwoo CHO ,  Ukho SEO ,  Jaewoong JUNG

IPC: H02K1/28 ,  B29C45/14 ,  B29K105/20 ,  B29L31/00 ,  D06F23/06 ,  D06F37/30 ,  H02K1/2791 ,  H02K15/12 ,  H02K21/22

CPC classification number: H02K1/28 ,  B29C45/14467 ,  D06F23/06 ,  D06F37/304 ,  H02K1/2791 ,  H02K15/12 ,  H02K21/22 ,  B29C2045/1454 ,  B29K2105/20 ,  B29K2105/203 ,  B29L2031/7498

Abstract: An embodiment of the present invention relates to a motor assembly in which a rotor comprises: a rotor frame including a bottom surface having a rotating shaft at the center thereof and a side wall extending from the circumference of the bottom surface to surround the rotor in a circumferential direction; a plurality of cores disposed at the side wall along the circumferential direction; a plurality of permanent magnets disposed at the side wall along the circumferential direction and disposed between the plurality of cores, respectively; and an outer ring disposed at an outer surface, which is the opposite to the center of the rotor frame, along the circumferential direction, of the side wall, wherein the outer ring may be disposed apart from the plurality of cores and have the side wall therebetween. Various other embodiments may also be possible.

公开(公告)号：US20210091617A1

公开(公告)日：2021-03-25

申请号：US17030097

申请日：2020-09-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yongwoo NAM ,  Deokjin KIM ,  Ukho SEO ,  Jaewoong JUNG ,  Youngkwan KIM

IPC: H02K1/27 ,  H02K1/28

Abstract: A rotor and a motor including the same. The motor includes a stator and a rotor configured to rotate by interacting with the stator. The rotor includes a plurality of permanent magnets disposed in a circumferential direction of the rotor and rotor cores disposed between the plurality of permanent magnets. The rotor core includes a notch cut inward from a circumferential surface thereof, and the notch is formed in an asymmetric shape. The rotor core has a notch formed on one side of the circumferential surface and the rotor core has a shape inverted left and right with the rotor core are alternately stacked, so that a magnitude of a synthetic cogging torque generated in the rotor is reduced.