US 11,996,756 B2
Motor unit
Shuhei Nakamatsu, Kyoto (JP); Tsubasa Tamura, Kyoto (JP); and Hitoshi Kuroyanagi, Kyoto (JP)
Assigned to NIDEC CORPORATION, Kyoto (JP)
Appl. No. 17/436,587
Filed by NIDEC CORPORATION, Kyoto (JP)
PCT Filed Jan. 10, 2020, PCT No. PCT/JP2020/000653
§ 371(c)(1), (2) Date Sep. 3, 2021,
PCT Pub. No. WO2020/179217, PCT Pub. Date Sep. 10, 2020.
Claims priority of application No. 2019-040863 (JP), filed on Mar. 6, 2019; application No. 2019-075237 (JP), filed on Apr. 11, 2019; and application No. 2019-110648 (JP), filed on Jun. 13, 2019.
Prior Publication US 2022/0173639 A1, Jun. 2, 2022
Int. Cl. H02K 5/22 (2006.01); B60L 50/51 (2019.01); H02K 1/32 (2006.01); H02K 5/20 (2006.01); H02K 7/116 (2006.01); H02K 9/19 (2006.01); H02K 9/193 (2006.01); H02K 11/30 (2016.01); H02K 11/33 (2016.01)
CPC H02K 5/22 (2013.01) [B60L 50/51 (2019.02); H02K 1/32 (2013.01); H02K 5/20 (2013.01); H02K 5/203 (2021.01); H02K 5/225 (2013.01); H02K 7/116 (2013.01); H02K 9/19 (2013.01); H02K 9/193 (2013.01); H02K 11/30 (2016.01); H02K 11/33 (2016.01); H02K 2205/09 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A motor unit comprising:
a motor that rotates about a motor axis;
a gear unit connected to the motor;
an inverter that controls a current to be supplied to the motor; and
a housing including a motor housing portion that houses the motor, an inverter housing portion that houses the inverter, and a gear housing portion that houses the gear unit,
the inverter housing portion being supported by the motor housing portion and the gear housing portion,
the housing including a housing body that is a single member,
the housing body including:
a first wall portion that also serves as a side wall of each of the inverter housing portion and the motor housing portion; and
a second wall portion that also serves as a side wall of each of the inverter housing portion and the gear housing portion,
the inverter housing portion includes a top plate portion covering an opening of the inverter housing portion,
the inverter is fixed to a back surface of the top plate portion, and faces an inside of the inverter housing portion,
the inverter housing portion includes a sidewall portion protruding from an edge portion of the top plate portion along a thickness direction of the top plate portion, and
the sidewall portion has a protruding height increasing as a distance from the motor axis increases.