公开(公告)号：US20200309118A1

公开(公告)日：2020-10-01

申请号：US16822038

申请日：2020-03-18

Applicant: NIDEC TOSOK CORPORATION

Inventor： Hitoshi SAKAMOTO ,  Koji HIGUCHI ,  Kunihiro KAJITA ,  Tomokazu IKEDA

IPC: F04C11/00 ,  H02K7/14 ,  F04C15/00 ,  F04C13/00

Abstract: Provided is an electric pump device which includes a motor having a shaft extending along a first central axis, a pump portion driven by the motor, and a housing for housing the motor and the pump portion. The housing includes: a housing body portion which has a bottomed tube shape and extends in an axial direction, a flange portion which expands radially outward from an outer peripheral surface of the housing body portion, a seal portion which has a ring shape extending in a circumferential direction and is arranged at a corner portion in which the outer peripheral surface of the housing body portion and an end surface facing one axial side of the flange portion are connected, and a projection portion extending from a bottom portion of the housing body portion toward one axial side. A second central axis of the projection portion is arranged at a position shifted in a radial direction from the first central axis. The flange portion has positioning portions on the end surface facing the one axial side of the flange portion. The positioning portions have a convex shape projected from the end surface facing the one axial side of the flange portion toward the one axial side or a hole shape recessed from the end surface toward the other axial side.

公开(公告)号：US20200309156A1

公开(公告)日：2020-10-01

申请号：US16813758

申请日：2020-03-10

Applicant: NIDEC TOSOK CORPORATION

Inventor： Hitoshi SAKAMOTO ,  Koji HIGUCHI ,  Kunihiro KAJITA ,  Tomokazu IKEDA

IPC: F04D29/66 ,  H02K1/16 ,  H02K1/22 ,  H02K5/04 ,  H02K7/00 ,  H02K5/24 ,  F04D13/06 ,  F04D29/40

Abstract: An electric pump device includes a motor having a rotor and a stator portions, a pump portion and a housing. The stator portion has a stator core, and coils each having a winding portion and a crossover portion. The housing has a housing body portion having a tubular shape and extending in the axial direction, and a flange portion expanding radially outward from the outer peripheral surface of the housing body portion. The flange portion has an end surface that faces toward one side in the axial direction and is disposed in the axial direction between a first and a second virtual plane. The first and the second virtual planes pass through parts of the stator core, the winding portion, and the crossover portion located respectively closest to one and the other sides in the axial direction and expanding in a direction perpendicular to a central axis.

公开(公告)号：US20200309130A1

公开(公告)日：2020-10-01

申请号：US16822041

申请日：2020-03-18

Applicant: NIDEC TOSOK CORPORATION

Inventor： Hitoshi SAKAMOTO ,  Koji HIGUCHI ,  Kunihiro KAJITA ,  Tomokazu IKEDA

IPC: F04C23/02 ,  F04C18/08

Abstract: Provided is an electric pump device which includes a motor having a shaft extending along a first central axis, a pump portion driven by the motor, and a housing for housing the motor and the pump portion. The housing includes: a housing body portion which has a bottomed tube shape and extends in an axial direction, a flange portion which expands radially outward from an outer peripheral surface of the housing body portion, and a projection portion extending from a bottom portion of the housing body portion toward one axial side. A second central axis of the projection portion is arranged at a position shifted in a radial direction from the first central axis. The flange portion has convex portions projected from the end surface facing the one axial side of the flange portion toward the one axial side.