公开(公告)号：US11025123B2

公开(公告)日：2021-06-01

申请号：US15984456

申请日：2018-05-21

Applicant: Nidec Corporation

Inventor： Yuta Yamasaki ,  Takaya Okuno ,  Yoshihisa Kitamura ,  Tadayuki Kanatani ,  Hideki Aoi ,  Shoki Yamazaki

IPC: H02K5/10 ,  H02K1/27 ,  F04D25/06 ,  H02K7/14 ,  F04D29/08 ,  H02K1/12 ,  H02K1/14 ,  H02K5/173

Abstract: A motor includes a stator unit and a rotor rotatable relative to the stator unit. The stator unit includes a stator, a resin portion, a support portion, and an annular recess. The stator includes a stator core, an insulator, and a conducting wire wound around the stator core with the insulator interposed therebetween. The resin portion covers at least part of the stator. The support portion supports the stator. At an end portion of the stator unit on one side in an axial direction, the recess is recessed toward another side in the axial direction. The resin portion is positioned further in a radially outer direction than the recess. The rotor includes an annular projection extending toward the other side in the axial direction. At least part of the projection is accommodated in the recess.

公开(公告)号：US10965179B2

公开(公告)日：2021-03-30

申请号：US16387627

申请日：2019-04-18

Applicant: Nidec Corporation

Inventor： Yuta Yamasaki ,  Hideki Aoi ,  Yoshihisa Kitamura ,  Junya Kawata ,  Rui Izutsu

IPC: H02K5/10 ,  H02K1/16 ,  H02K1/18 ,  F04D25/06 ,  H02K5/173 ,  F04D19/00 ,  H02K5/08

Abstract: A stator assembly includes a stator that drives a rotor rotatable about a central axis extending in a vertical direction, a cover that accommodates the stator, a filling portion that fills a space between the cover and the stator. The cover includes a tubular portion that extends in an axial direction and covers a radially side portion of the stator opposing the rotor in a radial direction, a lid portion that covers an axially upper end portion of the stator, and a cover stepped portion that is provided on a first radial side with respect to the tubular portion. The cover stepped portion comes in contact with the axially upper end portion of the stator and is positioned on an axially lower side with respect to an axially upper end portion of the tubular portion.

公开(公告)号：US10897175B2

公开(公告)日：2021-01-19

申请号：US16388899

申请日：2019-04-19

Applicant: Nidec Corporation

Inventor： Yuta Yamasaki ,  Hideki Aoi ,  Yoshihisa Kitamura ,  Junya Kawata ,  Rui Izutsu

IPC: H02K5/10 ,  H02K5/08 ,  H02K1/04

Abstract: A stator assembly includes a stator that drives a rotor that is rotatable about a central axis extending in a vertical direction, a stator support that supports the stator, and a filling portion that covers the stator. A first radial end portion of the stator is fixed to a second radial side surface of the stator support. An insulator of the stator includes an upper insulator covering an upper surface of a stator core. A first radial end portion of the upper insulator contacts the second radial side surface of the tubular stator support extending in an axial direction. An annular insulator concave portion that is recessed to the axial upper side is provided in the first radial end portion of the upper insulator. A first space, surrounded by the insulator concave portion, the stator core, and the stator support, is filled with a filling material.

公开(公告)号：US12006948B2

公开(公告)日：2024-06-11

申请号：US17589921

申请日：2022-02-01

Applicant: Nidec Corporation

Inventor： Yoshihisa Kitamura ,  Toshihiko Tokeshi ,  Takehito Tamaoka ,  Takaya Okuno

IPC: F04D29/42 ,  F04D1/06 ,  F04D13/06 ,  F04D13/14 ,  F04D29/58

CPC classification number: F04D29/426 ,  F04D1/06 ,  F04D13/06 ,  F04D13/14 ,  F04D29/4293 ,  F04D29/586

Abstract: A pump device includes a first pump, a second pump, and a casing. The first pump and the second pump are centrifugal pumps. The casing includes a first pump chamber in which the first pump is located and a second pump chamber in which the second pump is located. The first pump chamber includes a first bottom surface, a first side surface, a first inlet, and a first outlet. The first bottom surface is located on one side in the first direction with respect to a first motor of the first pump. The first side surface is connected to the first bottom surface and extends in the first direction. The first outlet is open with respect to the first side surface. The second pump chamber includes a second bottom surface, a second side surface, a second inlet, and a second outlet.

公开(公告)号：US11946491B2

公开(公告)日：2024-04-02

申请号：US17358066

申请日：2021-06-25

Applicant: Nidec Corporation

Inventor： Toshihiko Tokeshi ,  Takahiro Imanishi ,  Yoshihisa Kitamura ,  Takehito Tamaoka

IPC: F15B1/24 ,  F04B1/02 ,  F04B9/02 ,  F04B23/02 ,  F15B1/04

CPC classification number: F15B1/24 ,  F04B1/02 ,  F04B9/02 ,  F04B23/02 ,  F15B1/04 ,  F15B2201/21 ,  F15B2201/31

Abstract: A liquid feeder includes a pump which is prevented from idling, and a replenisher including a cylinder that is a bottomed tube including an opening on a side adjacent to a communication flow path, the opening being connected to the communication flow path, and that is capable of accommodating a liquid in at least a portion of the cylinder, a seal that is housed in the cylinder in a movable manner along the cylinder, and seals the liquid in the cylinder, and a pressurizer to pressurize the seal toward a pump chamber.

公开(公告)号：US11725650B2

公开(公告)日：2023-08-15

申请号：US17358071

申请日：2021-06-25

Applicant: Nidec Corporation

Inventor： Yoshihisa Kitamura ,  Takaya Okuno ,  Toshihiko Tokeshi ,  Takehito Tamaoka ,  Akihiko Makita

IPC: F04B53/16 ,  F04B53/10 ,  F16L37/32 ,  F04B53/22

CPC classification number: F04B53/16 ,  F04B53/10 ,  F04B53/22 ,  F16L37/32

Abstract: A liquid feeder switches a flow path of a liquid having flowed in from an inflow port to one of a flow path communicating with a first base communication port and a bypass outflow path. When a pump is attached to a base, the bypass outflow path is closed to allow the liquid having flowed in from the inflow port to flow to the pump. When the pump is removed from the base, the bypass outflow path is opened to allow the liquid having flowed in from the inflow port to flow from the bypass outflow path to the outflow port. The liquid feeder is able to prevent liquid leakage when a pump of a liquid feeder is replaced or repaired.

公开(公告)号：US12232297B2

公开(公告)日：2025-02-18

申请号：US18100581

申请日：2023-01-24

Applicant: Nidec Corporation

Inventor： Yoshihisa Kitamura ,  Naoyuki Takashima ,  Takehito Tamaoka ,  Toshihiko Tokeshi

IPC: H05K7/20

Abstract: A cooling device includes a first cooling section, a second cooling section, a first pump section, a second pump section, a branch section, a first flow path section, a second flow path section, a merging section, and a connection section. The branch section branches a refrigerant into two. The first flow path section connects the first cooling section and the first pump section, and one portion of the refrigerant passes through the first flow path section. The second flow path section connects the second cooling section and the second pump section, and another portion of the refrigerant passes through the second flow path section. The merging section merges the refrigerant having passed through each of the first flow path section and the second flow path section. The connection section connects the first and second flow path sections between the branch section and the merging section.

公开(公告)号：US10680487B2

公开(公告)日：2020-06-09

申请号：US15911430

申请日：2018-03-05

Applicant: Nidec Corporation

Inventor： Takaya Okuno ,  Tadayuki Kanatani ,  Shoki Yamazaki ,  Yoshihisa Kitamura ,  Hideki Aoi

IPC: H02K7/08 ,  H02K5/173 ,  H02K5/10 ,  H02K5/124 ,  F16C33/72 ,  H02K7/14 ,  H02K5/128

Abstract: In a fan motor, a stator unit of a motor that rotates an impeller includes a cylindrical bearing holder that extends in an axial direction, a cover that covers an end of the bearing holder on one side in the axial direction, and a seal provided between the bearing holder and the cover. The cover has a disc portion that is provided on the end on the one side in the axial direction and extends in the radial direction, and a cylindrical portion that extends from the disc portion to the other side in the axial direction, and is located inside of the end. The seal has a first seal portion located between an inner side face of the end and an outer side face of the cylindrical portion in the radial direction.

公开(公告)号：US10530213B2

公开(公告)日：2020-01-07

申请号：US15921701

申请日：2018-03-15

Applicant: Nidec Corporation

Inventor： Yoshihisa Kitamura ,  Takaya Okuno ,  Hideki Aoi ,  Shoki Yamazaki

IPC: H02K1/22 ,  H02K5/10 ,  H02K1/18 ,  H02K1/27 ,  H02K7/08 ,  F04D25/08 ,  F04D25/06 ,  H02K7/14 ,  H02K15/12 ,  H02K21/22 ,  H02K5/173 ,  F04D29/08

Abstract: In a fan motor, a stator unit of a motor that rotates an impeller includes an annular stator, the center of which is positioned on a central axis, and a housing including an accommodating portion that accommodates a part of a resin portion covering at least a part of the stator. At least one of a bottom face of the accommodating portion oriented to the stator in the axial direction and an inner side face of the accommodating portion oriented to an inner side in the radial direction is provided with a plurality of stepped portions. The stepped portions are different from each other in length in the axial direction when provided in the bottom face, and/or in length in the radial direction when provided in the inner side face. The bottom face, the inner side face, and the stepped portion are covered with the resin portion.