US 12,142,994 B2
Hollow shaft motor
Ok Yun Kim, Seoul (KR); Kea Ho Lee, Gwangju (KR); Haeng Chul Sin, Gwangju (KR); and Gwan Seon Jeong, Gwangju (KR)
Assigned to BMC CO., LTD., Anseong-si (KR); and HL Mando Corporation, Pyeongtaek-si (KR)
Filed by BMC CO., LTD., Anseong-si (KR); and HL Mando Corporation, Pyeongtaek-si (KR)
Filed on Aug. 12, 2022, as Appl. No. 17/886,511.
Application 17/886,511 is a continuation of application No. PCT/KR2021/002901, filed on Mar. 9, 2021.
Claims priority of application No. 10-2020-0049722 (KR), filed on Apr. 24, 2020.
Prior Publication US 2022/0393547 A1, Dec. 8, 2022
Int. Cl. H02K 7/102 (2006.01); H02K 1/274 (2022.01); H02K 3/28 (2006.01); H02K 5/04 (2006.01); H02K 5/22 (2006.01); H02K 7/00 (2006.01)
CPC H02K 7/102 (2013.01) [H02K 1/274 (2013.01); H02K 3/28 (2013.01); H02K 5/04 (2013.01); H02K 5/225 (2013.01); H02K 7/003 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A hollow shaft motor, comprising:
a motor housing 11 having a cylindrical shape;
a housing cover assembly 12 coupled to an upper portion of the motor housing 11;
a rear cover 15 coupled to a lower portion of the motor housing 11;
a stator assembly 20 located in the motor housing 11 and in a lower portion of the housing cover assembly 12; and
a rotor assembly 30 located in the stator assembly 20 to rotate,
wherein the housing cover assembly 12 comprises a housing cover 121 with a bus bar 123, and the bus bar 123 comprises:
a bus bar main body 123-1 which is bent in a circle;
a plurality of coil coupling parts 123A which are formed in the bus bar main body 123-1 and bent to be electrically connected to coils;
a bus bar terminal 123B which is formed in one end of the bus bar main body 123-1 to be electrically connected to an external power source; and
a first bending part 123C which is bent to protrude the bus bar terminal 123B upwardly of the bus bar 123,
wherein the housing cover 121 is formed by insert injection molding while placing a press ring 122, a bus bar 123 and a sleeve 124 in a mold.