US 11,870,315 B2
Electric pump
Takeshi Miyasaka, Nagano (JP); Takahisa Tezuka, Nagano (JP); Naomi Koyama, Nagano (JP); and Takuya Nakano, Nagano (JP)
Assigned to SHINANO KENSHI CO., LTD., Ueda (JP)
Filed by SHINANO KENSHI CO., LTD., Ueda (JP)
Filed on Dec. 4, 2020, as Appl. No. 17/111,754.
Claims priority of application No. 2020-022028 (JP), filed on Feb. 13, 2020.
Prior Publication US 2021/0257874 A1, Aug. 19, 2021
Int. Cl. H02K 3/52 (2006.01); F04D 13/06 (2006.01); F04D 29/18 (2006.01); F04D 29/40 (2006.01); H02K 3/28 (2006.01); H02K 3/32 (2006.01); H02K 3/18 (2006.01); H02K 3/04 (2006.01); H02K 1/14 (2006.01)
CPC H02K 3/522 (2013.01) [F04D 13/06 (2013.01); F04D 13/064 (2013.01); F04D 13/0606 (2013.01); F04D 13/0693 (2013.01); F04D 29/18 (2013.01); F04D 29/406 (2013.01); H02K 1/148 (2013.01); H02K 3/04 (2013.01); H02K 3/18 (2013.01); H02K 3/28 (2013.01); H02K 3/32 (2013.01); H02K 2203/09 (2013.01); H02K 2203/12 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An electric pump comprising:
an impeller;
a rotor connected to the impeller;
a housing that houses the rotor;
a plurality of divided iron cores surrounding an outer surface of the housing;
a plurality of divided coil bobbins respectively attached to the plurality of the divided iron cores;
a plurality of divided coils respectively wound around the plurality of the divided coil bobbins;
a plurality of bus bars; and
an insulating member,
wherein
at least one of the plurality of the bus bars includes:
a ring portion that is a substantially C shape, and
a hook portion that extends outward from an outer radial periphery of the ring portion along a plane perpendicular to an axis of the rotor and is bent to extend radially inward so that the hook portion overlaps itself along a direction parallel to the axis;
at least one of the plurality of the divided coils includes:
a wound portion wound around the divided coil bobbin, and
an extended portion that extends from the wound portion;
a part of the extended portion is engaged and welded with the hook portion;
the insulating member includes an opening to expose the hook portion and covers the plurality of the bus bars; and
the extended portion engaged and welded with the hook portion is extended from the wound portion, and overlaps, with the insulating member in between, a portion of another of the plurality of the bus bars located radially outside from the bus bar with the hook portion.