US 12,407,211 B2
Electric motor oil pump device
Sang Tae Kim, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Appl. No. 18/011,980
Filed by LG INNOTEK CO., LTD., Seoul (KR)
PCT Filed Jun. 23, 2021, PCT No. PCT/KR2021/007887
§ 371(c)(1), (2) Date Dec. 21, 2022,
PCT Pub. No. WO2021/261911, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 10-2020-0076491 (KR), filed on Jun. 23, 2020; and application No. 10-2020-0079542 (KR), filed on Jun. 29, 2020.
Prior Publication US 2023/0253853 A1, Aug. 10, 2023
Int. Cl. H02K 5/20 (2006.01); F04B 17/03 (2006.01); H02K 9/19 (2006.01); H02K 9/193 (2006.01)
CPC H02K 5/20 (2013.01) [F04B 17/03 (2013.01); H02K 9/19 (2013.01); H02K 9/193 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A motor comprising:
a housing including a motor part; and
a cover coupled to the housing and including a pump part,
wherein
the cover includes a first hole through which a first area in the cover communicates with a second area in the housing,
the motor part includes a shaft passing through the first hole,
a first flow path through which the first area communicates with the second area is formed in the shaft,
a second flow path through which the first area communicates with the second area is formed between the shaft and the first hole, and
an amount of a fluid introduced through the first flow path is greater than an amount of a fluid introduced through the second flow path for a predetermined time,
wherein the cover includes a body including the pump part and an extension part disposed to protrude from one surface of the body in an axial direction, a part of the first hole is disposed in the body, and the rest of the first hole is disposed in the extension part,
wherein the pump includes a suction port through which the pump part receives fluid, and a discharge port that is connected to the suction port and through which the fluid that has entered the suction port is discharged,
wherein the cover includes a partition wall partitioning the suction port and the discharge port, and a surface of the partition wall includes a first groove connected to the first hole and a second groove concavely formed on an inner wall of the first hole, and
wherein the first groove and the second groove are connected.