US 11,750,050 B2
Motor and washing machine having the same
Ukho Seo, Suwon-si (KR); Deokjin Kim, Suwon-si (KR); Yongwoo Nam, Suwon-si (KR); and Jaewoong Jung, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Mar. 4, 2021, as Appl. No. 17/191,894.
Claims priority of application No. 10-2020-0028638 (KR), filed on Mar. 6, 2020.
Prior Publication US 2021/0281133 A1, Sep. 9, 2021
Int. Cl. H02K 1/2786 (2022.01); H02K 1/30 (2006.01); D06F 37/30 (2020.01)
CPC H02K 1/2786 (2013.01) [D06F 37/304 (2013.01); H02K 1/30 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A washing machine comprising:
a cabinet;
a tub inside the cabinet;
a drum configured to be rotatable inside the tub; and
a motor including a stator on a rear wall of the tub, and a rotor configured to rotate by electromagnetically interacting with the stator,
the rotor including a plurality of rotor cores and a plurality of magnets arranged alternately and radially with the plurality of rotor cores, each of the plurality of rotor cores having a body including:
a tooth formed at a front part of the body,
a first groove formed at an upper part of the body,
a second groove formed at a lower part of the body,
a plurality of partitions separating the first groove from the second groove,
a third groove in the upper part of the body,
a fourth groove in the lower part of the body, and
another partition of the plurality partitions in the body between the third groove and the fourth groove,
wherein each of the third groove and the fourth groove is connected to a corresponding one of resin introducing holes on a side surface of the body facing a magnet of the plurality of magnets.