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公开(公告)号：US20170324300A1
公开(公告)日：2017-11-09
申请号：US15528169
申请日：2015-10-17
Applicant: Nidec Corporation
Inventor： Yoshiaki YAMASHITA
Abstract: A motor includes: a motor main body; a power board including a switching element and electrically connected to the motor main body; a control board electrically connected to the power board and disposed on an axial counter output side of the motor main body; a control board holder attached to the motor main body to hold the control board; a sensor magnet located on a counter output side of a stator and fixed to a shaft; a rotation sensor attached to the control board to face the sensor magnet; and a power board case directly or indirectly attached to the motor main body to hold the power board. The power board is positioned radially outward of the motor main body. Board surfaces of the power board are inclined with respect to board surfaces of the control board.
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公开(公告)号：US20160294248A1
公开(公告)日：2016-10-06
申请号：US15083626
申请日：2016-03-29
Applicant: Nidec Corporation
Inventor： Takao ATARASHI , Yoshiaki YAMASHITA , Tatsuro KAWAMOTO , Yusaku YOSHIDA , Tomoki IGA
CPC classification number: H02K5/225 , H02K3/522 , H02K5/16 , H02K5/161 , H02K5/22 , H02K7/083 , H02K11/215 , H02K11/33
Abstract: A motor may include a rotor including a shaft; a stator arranged radially outside of the rotor; a bearing arranged on an upper side of the stator; a tubular housing; a bearing holder arranged on the upper side of the stator; and a busbar unit arranged on an upper side of the bearing holder. The rotor may include a rotor magnet fixed to the shaft. The stator may include an annular core back; teeth arranged to extend radially inward from the core back; and coils wound around the teeth. The housing may include a housing inner circumferential surface arranged to hold the stator. The bearing holder may be arranged to be in contact with the housing inner circumferential surface. The busbar unit may be arranged to be in contact with the housing inner circumferential surface.
Abstract translation: 马达可以包括具有轴的转子; 定子，其布置在所述转子的径向外侧; 布置在定子的上侧的轴承; 管状外壳; 轴承座，其布置在所述定子的上侧; 以及布置在所述轴承座的上侧的母线单元。 转子可以包括固定到轴的转子磁体。 定子可包括环形芯背; 布置成从芯背向径向向内延伸的齿; 缠绕在牙齿上的线圈。 壳体可以包括布置成保持定子的壳体内周面。 轴承座可以布置成与壳体内周面接触。 母线单元可以布置成与壳体内周面接触。
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公开(公告)号：US20220393556A1
公开(公告)日：2022-12-08
申请号：US17761618
申请日：2020-09-01
Applicant: Nidec Corporation
Inventor： Toshiya OKAMOTO , Yoshiaki YAMASHITA , Takashi HATTORI
Abstract: A motor assembly includes a housing and a plate-shaped first substrate. The housing houses a motor whose axis of rotation extends in the axial direction. Electronic components are mounted on the first substrate. The housing includes a tubular portion and a side wall portion. The tubular portion extends in the axial direction and accommodates the motor. The side wall portion protrudes from a radial outer surface of the tubular portion in a direction including at least the radially outward direction and the circumferential direction, and extends in the axial direction. An accommodation space to accommodate the electronic components is provided between the tubular portion and the side wall portion as viewed from the axial direction.
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公开(公告)号：US20220173671A1
公开(公告)日：2022-06-02
申请号：US17601049
申请日：2020-03-25
Applicant: NIDEC CORPORATION
Inventor： Yoshiaki YAMASHITA , Hiromitsu OHASHI
Abstract: In an aspect of a power conversion device that converts power from a power source to supply the converted power to a motor, the power conversion device includes an inverter connected to a winding of the motor and including a first switching element that generates heat in association with an operation of power control and a second switching element that generates more heat than the first switching element in association with an operation of power control, and a substrate on which the first switching element and the second switching element are mounted, wherein a first element group including one or a plurality of the first switching elements and a second element group including one or a plurality of the second switching elements are alternately mounted on the substrate.
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公开(公告)号：US20200373867A1
公开(公告)日：2020-11-26
申请号：US16496466
申请日：2018-03-09
Applicant: Nidec Corporation
Inventor： Yoshiaki YAMASHITA , Hiromitsu OHASHI
Abstract: A motor includes a first inverter electrically connected to a first end of a winding of each phase, and a second inverter electrically connected to a second end of the winding of each phase. Each of the first and second inverters includes low-side switching elements and high-side switching elements. FETs of the first inverter are electrically connected to a first end of a U-phase winding. FETs of the second inverter are electrically connected to a second end of the U-phase winding. At least a portion of a current flowing from one of the FETs of the first inverter to the U-phase winding flows to one of the FETs of the second inverter. One of the FETs of the first inverter and one of the FETs of the second inverter are adjacent to each other.
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Patent Agency Ranking
公开(公告)号：US20200059141A1
公开(公告)日：2020-02-20
申请号：US16346879
申请日：2017-03-30
Applicant: Nidec Corporation
Inventor： Toshiya OKAMOTO , Takashi HATTORI , Yusaku YOSHIDA , Yoshiaki YAMASHITA , Takahiro KIZU , Yuichi NISHIKAWA
IPC: H02K15/085 , H02K7/08 , B62D5/04 , H02K5/22
Abstract: A motor includes a rotor, a stator including coils defined by windings of coil wires, a coil support into which the coil wires are inserted, a bearing supporting the shaft, a holder with a through-hole that holds both the bearing and the coil support. The coil support includes a base on the top surface of the stator, and a coil support portion extending axially upward from the base, at least a portion of which is located in the through-hole. The base is fitted to the stator through a gap.
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公开(公告)号：US20200014278A1
公开(公告)日：2020-01-09
申请号：US16487221
申请日：2018-03-22
Applicant: Nidec Corporation
Inventor： Yoshiaki YAMASHITA , Takao ATARASHI
Abstract: A rotor includes a shaft arranged along a central axis extending in a vertical direction, a rotor core fixed on the shaft, magnets provided at an outer side of the rotor core in a radial direction, a rotor cover to accommodate the rotor core and the magnets, and a resin to fix the rotor cover and the magnets to each other. The rotor cover includes a cylindrical portion extending in an axial direction and surrounding outer sides of the rotor core and the magnets in the radial direction, and a bottom plate extending inward in the radial direction from a lower end portion of the cylindrical portion. The resin includes a filler provided at an inner side of the cylindrical portion in the radial direction and filled between the cylindrical portion and the magnets, an anti-separation portion, at least a portion of which is located below the bottom plate, and a connector overlapping the bottom plate in the axial direction. The filler and the anti-separation portion are connected via the connector.
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公开(公告)号：US20190280567A1
公开(公告)日：2019-09-12
申请号：US16347605
申请日：2017-03-30
Applicant: Nidec Corporation
Inventor： Takashi HATTORI , Takahiro KIZU , Toshiya OKAMOTO , Yuichi NISHIKAWA , Yoshiaki YAMASHITA
Abstract: A motor includes a rotor including a shaft that extends axially, a stator that surrounds the radial outer side of the rotor and includes coils defined by windings of coil wires, a holder with through-holes that is axially above the stator for insertion of the coil wires therethrough and extends axially, and a substrate that is axially above the holder and includes an electronic component mounted thereon. Only some of the coil wires with the same phase are inserted into each of the through-holes, and the through-holes are separate holes provided to different phases of the coil wires.
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公开(公告)号：US20190280566A1
公开(公告)日：2019-09-12
申请号：US16347602
申请日：2017-03-30
Applicant: Nidec Corporation
Inventor： Takashi HATTORI , Takahiro KIZU , Toshiya OKAMOTO , Yuichi NISHIKAWA , Yoshiaki YAMASHITA
Abstract: A motor includes a heat sink including an inner region, and an outer region located radially outward from the inner region. An axial thickness of the inner region is larger than an axial thickness of the outer region, the bottom surface of the outer region is located axially above the bottom surface of the inner region, and the inner region and the electronic component at least partially overlap in an axial direction. A bus bar holder is located axially below the outer region and overlaps the inner region in a radial direction.
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公开(公告)号：US20190267862A1
公开(公告)日：2019-08-29
申请号：US16319553
申请日：2017-03-30
Applicant: Nidec Corporation
Inventor： Takashi HATTORI , Takahiro KIZU , Toshiya OKAMOTO , Yuichi NISHIKAWA , Yoshiaki YAMASHITA , Mitsuo KODAMA , Yuya SAITO , Shingo FUKUMOTO , Chiharu KOBAYASHI
Abstract: A motor includes a rotor including a shaft extending axially, a stator surrounding a radial outside of the rotor and including a coil defined by a wound coil wire, a holder disposed on an axially upper side of the stator, the coil wire being inserted into the holder, the holder including through-holes extending axially, and a circuit board disposed on the axially upper side of the holder, an electronic component being mounted on the circuit board. When the holder is viewed from the axially upper side, the through-holes are located in a region where a center angle (α) centered on the shaft is less than or equal to 180 degrees.
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