公开(公告)号：US20200295631A1

公开(公告)日：2020-09-17

申请号：US16496553

申请日：2018-03-09

Applicant: Nidec Corporation

Inventor： Yoshiaki YAMASHITA ,  Hiromitsu OHASHI

IPC: H02K11/33 ,  H02K11/215 ,  H02P27/08

Abstract: A motor includes a first inverter connected to one end of a winding of each phase and a second inverter connected to another end of the winding of each phase. The first inverter includes a terminal electrically connected to one end of a U-phase winding. The second inverter includes a terminal electrically connected to another end of the U-phase winding. Current output from the terminal of the first inverter and passing through the U-phase winding flows to the terminal of the second inverter. Current output from the terminal of the second inverter and passing through the U-phase winding flows to the terminal of the first inverter. The terminal of the first inverter and the terminal of the second inverter are adjacent to each other.

公开(公告)号：US20200014273A1

公开(公告)日：2020-01-09

申请号：US16490625

申请日：2017-11-22

Applicant: Nidec Corporation

Inventor： Hiroshi OGAWA ,  Yoshinobu ARAO ,  Yoshiaki YAMASHITA

IPC: H02K3/52 ,  H02K1/14 ,  H02K5/173 ,  H02K7/08

Abstract: A stator comprises: a stator core placed in a circular ring shape around a central axis that extends vertically, onto which coil wires are wound; a first support member placed over the stator core; and a second support member placed over the first support member, the first support member having receiving grooves for guiding the coil wires coming out of the stator core, wherein the receiving grooves are grooves that open to the top and extend in a direction along the top surface of the first support member, the second support member having through-holes that axially support the coil wires, wherein the second support member at least partially overlaps the receiving grooves of the first support member in an axial view.

公开(公告)号：US20190115806A1

公开(公告)日：2019-04-18

申请号：US16090363

申请日：2017-03-21

Applicant: NIDEC CORPORATION

Inventor： Yoshiaki YAMASHITA ,  Takashi HATTORI ,  Takahiro KIZU

IPC: H02K9/22 ,  H02K5/16 ,  H02K5/22 ,  H02K7/08 ,  H02K11/21 ,  H02K11/33 ,  H05K1/02

Abstract: A motor may include a rotor having a rotating shaft extending in an up-down direction, a stator that opposes the rotor, a housing that holds the stator, a heat sink that is attached to the housing, and a circuit board on which electronic components are mounted and which is disposed on a lower surface of the heat sink. The electronic components may include a heat-generating element. The housing may include a cylindrical portion and a flange portion extending outward in a radial direction from an upper end of the cylindrical portion. The heat sink may have a protruding portion protruding downward in an axial direction and is attached to an upper surface of the flange portion in the axial direction using a fixing member. The heat-generating element may be in contact with the heat sink via a heat-conducting member.

公开(公告)号：US20220385145A1

公开(公告)日：2022-12-01

申请号：US17761616

申请日：2020-09-14

Applicant: Nidec Corporation

Inventor： Toshiya OKAMOTO ,  Yoshiaki YAMASHITA ,  Takashi HATTORI

IPC: H02K11/33 ,  H02K5/22 ,  H02K11/21

Abstract: A motor assembly includes a housing, a first substrate, a plate-shaped second substrate, and a connector portion. The housing includes a tubular portion that accommodates a motor with an axis of rotation that extends in the vertical direction. The first substrate extends in a direction perpendicular to the axial direction. The second substrate extends in a direction intersecting the first substrate. The connector portion electrically connects the first substrate and the second substrate. The connector portion overlaps with the housing as viewed from the axial direction.

公开(公告)号：US20220376582A1

公开(公告)日：2022-11-24

申请号：US17761619

申请日：2020-09-14

Applicant: Nidec Corporation

Inventor： Toshiya OKAMOTO ,  Yoshiaki YAMASHITA ,  Takashi HATTORI

IPC: H02K5/10 ,  H02K5/22

Abstract: A motor assembly includes a housing, a first substrate, a second substrate, and a cover. The housing includes a tubular portion that accommodates a motor whose axis of rotation extends in the vertical direction. The first substrate opposes the radial outer end surface of the tubular portion in the radial direction. The second substrate extends perpendicularly to the axial direction and is above the motor. The cover includes a first cover portion that covers the radial outer end surface of the first substrate, and a second cover portion that covers the upper surface of the second substrate. The outer edge of the first cover portion as viewed from the radial direction and the outer edge of the second cover portion as viewed from the axial direction come into contact with the housing via a seal.

公开(公告)号：US20200059129A1

公开(公告)日：2020-02-20

申请号：US16497633

申请日：2018-03-30

Applicant: Nidec Corporation

Inventor： Yoshiaki YAMASHITA ,  Shunsuke MURAKAMI ,  Kosuke OGAWA

IPC: H02K3/52 ,  H02K3/18 ,  H02K15/095

Abstract: A motor includes a rotor, a stator, and first bus bars electrically connected to the stator on one axial direction side of the stator. The stator includes a stator core including a core back extending in a circumferential direction, teeth extending radially from the core back, and coils defined by winding a conducting wire, each of which is mounted on the teeth. A first conducting wire and a second conducting wire which are two respective ends of the conducting wire extend to one axial direction side from each of the coils. The first bus bars are neutral point bus bars connecting two or more first conducting wires as neutral points. The second conducting wire is connected to a power supply that supplies power to the stator.

公开(公告)号：US20200059128A1

公开(公告)日：2020-02-20

申请号：US16487512

申请日：2018-03-20

Applicant: Nidec Corporation

Inventor： Shunsuke TAKAHASHI ,  Hiroshi TANGE ,  Yoshiaki YAMASHITA ,  Takashi SEGUCHI

IPC: H02K3/52 ,  B62D5/04

Abstract: A motor includes a rotor, a stator surrounding an outer side of the rotor in a radial direction and including a coil, and a bus bar of a wire electrically connected to the coil and having conductivity, wherein the stator is provided with a hole extending in an axial direction, the bus bar includes stretched portions extending in the axial direction, and each of the stretched portions is disposed in the hole.

公开(公告)号：US20180316239A1

公开(公告)日：2018-11-01

申请号：US15767714

申请日：2016-10-06

Applicant: Nidec Corporation

Inventor： Kosuke OGAWA ,  Takashi HATTORI ,  Takashi SEGUCHI ,  Shunsuke MURAKAMI ,  Takao ATARASHI ,  Yoshiaki YAMASHITA

IPC: H02K5/173 ,  H02K11/30

CPC classification number: H02K5/173 ,  H02K11/30

Abstract: A motor includes a rotor that includes a shaft centered on a central axis extending in an upward and downward direction; a stator that is disposed to face the rotor in a radial direction; a bearing that supports the shaft; a bearing holder that holds the bearing; and a housing that accommodates the rotor, the stator, and the bearing holder, and opens to an upper side. The housing includes a controller accommodating region that accommodates at least a portion of a controller electrically connected to the stator on an upper side from the bearing holder. An inner diameter of the housing in the controller accommodating region is larger than an inner diameter of the housing at a position to which the bearing holder is attached. The bearing holder is held on an inner peripheral surface of the housing by interference fitting.

公开(公告)号：US20180233984A1

公开(公告)日：2018-08-16

申请号：US15750858

申请日：2016-08-09

Applicant: Nidec Corporation

Inventor： Kosuke OGAWA ,  Takashi HATTORI ,  Shunsuke MURAKAMI ,  Takao ATARASHI ,  Hidehiro HAGA ,  Yoshiaki YAMASHITA ,  Takahiro KIZU ,  Toshiya OKAMOTO

IPC: H02K3/50 ,  H02K1/16 ,  H02K3/12 ,  H02K3/38 ,  H02K5/16 ,  H02K7/08

CPC classification number: H02K3/50 ,  H02K1/16 ,  H02K3/12 ,  H02K3/38 ,  H02K3/52 ,  H02K3/522 ,  H02K5/161 ,  H02K5/1732 ,  H02K7/083 ,  H02K2203/06 ,  H02K2203/09

Abstract: A motor includes a rotor that has a shaft with a central axis extending in a vertical direction as a center, a stator disposed so as to face the rotor in a radial direction, a bearing that supports the shaft, a wire support member disposed above the stator, and a bearing holder disposed above the wire support member to hold the bearing. The stator includes a plurality of teeth, and a plurality of coils provided on the plurality of teeth. The wire support member includes a wire holding portion that holds one portion of coil lead wires among the coil lead wires drawn out from the coil, a conducting member that electrically connects the other portion of the coil lead wires to each other, and a main body portion that supports the wire holding portion and the conducting member.

公开(公告)号：US20180115224A1

公开(公告)日：2018-04-26

申请号：US15562971

申请日：2016-03-30

Applicant: Nidec Corporation

Inventor： Yoshiaki YAMASHITA

IPC: H02K11/30 ,  H02K5/16

CPC classification number: H02K11/30 ,  H02K5/16 ,  H02K5/1735 ,  H02K11/215 ,  H02K11/33 ,  H02K2213/03

Abstract: A motor includes a rotor, stator, upper bearing, lower bearing, housing, and control unit. The upper and lower bearings are positioned below an upper surface of the rotor core in an axial direction. The stator directly faces the control unit. The housing includes a housing cylinder portion surrounding the stator in a circumferential direction and a housing bottom portion positioned on a lower side of the stator in the axial direction. The housing bottom portion includes a bottom plate portion covering a lower side of the stator in the axial direction, an upper bearing holding portion holding the upper bearing, and a lower bearing holding portion holding the lower bearing. The upper bearing holding portion is positioned above the lower surface of the bottom plate portion in the axial direction. The lower bearing holding portion is positioned below an upper surface of the bottom plate portion in the axial direction.