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公开(公告)号：US10069361B2
公开(公告)日：2018-09-04
申请号：US14549948
申请日：2014-11-21
Applicant: DENSO CORPORATION
Inventor： Takeo Maekawa , Shin Kusase , Keiji Kondou
Abstract: A rotor securing arrangement for directly or indirectly securing a rotor to a shaft. The rotor has at least one through hole along a axial direction of the rotor. A second hole diameter of the at least one through hole at either or both of axial ends of the rotor is greater than a first hole diameter of the at least one through hole at a portion other than the axial ends of the rotor. The rotor securing arrangement includes a first securing member corresponding to the first hole diameter of the at least one through hole, and a second securing member corresponding to the second hole diameter of the at least one through hole. The first securing member is configured to directly or indirectly secure the rotor to the shaft with at least a portion of the second securing member between the first securing member and the rotor.
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公开(公告)号：US10587175B2
公开(公告)日：2020-03-10
申请号：US14820994
申请日：2015-08-07
Applicant: DENSO CORPORATION
Inventor： Takeo Maekawa , Shin Kusase , Keiji Kondou
IPC: H02K16/04 , H02K16/00 , H02K49/10 , H02K1/27 , H02K17/42 , H02K21/12 , H02K49/04 , H02K23/36 , H02K1/30
Abstract: A double-stator rotating electric machine includes a rotor, an outer stator disposed radially outside the rotor with an outer gap formed therebetween, and an inner stator disposed radially inside the rotor with an inner gap formed therebetween. The outer stator has an outer multi-phase coil wound thereon, and the inner stator has an inner multi-phase coil wound thereon. Moreover, the inner gap formed between the inner stator and the rotor is set to be larger than the outer gap formed between the outer stator and the rotor.
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公开(公告)号：US10122246B2
公开(公告)日：2018-11-06
申请号：US15071732
申请日：2016-03-16
Applicant: DENSO CORPORATION
Inventor： Takafumi Matsumoto , Hirohito Matsui , Koji Asagara , Takeo Maekawa , Keiji Kondou
Abstract: In a multi-gap rotating electric machine, a side stator coil is received in a side space formed in a housing to connect radially inner and radially outer stator coils across a rotor. A cooling oil flow adjustment member is provided to adjust flow of cooling oil in the side space. The adjustment member has cooling oil guide channels formed on an uneven surface thereof facing the side stator coil. When viewed along a central axis of a rotating shaft: on an upper apart of the uneven surface which is located above the central axis, the cooling oil guide channels spread from a reference line to both sides of the reference line while extending downward; and on a lower part of the uneven surface which is located below the central axis, the cooling oil guide channels converge on the reference line from both sides of the reference line while extending downward.
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公开(公告)号：US10116189B2
公开(公告)日：2018-10-30
申请号：US15006215
申请日：2016-01-26
Applicant: DENSO CORPORATION
Inventor： Takeo Maekawa , Keiji Kondou , Masayoshi Yamamoto , Takashi Sato , Tomoyuki Shinkai
Abstract: A rotating electrical machine has a housing, a stator having a stator core and a rotor having a rotor core and rotor side plates rotatably supported by the housing. The rotor core is arranged to have a gap between the end surfaces of the rotor core and the stator. Oil containers are arranged on at least one surface of the rotor side plate. Each oil container has a scoop-up part and an exhaust outlet formed on end sections thereof. When the rotor is rotating, the scoop-up part scoops up an oil stored in the housing, the oil and inside air are compressed in the oil container, and the exhaust outlet exhausts the oil and compressed air to the coil end of the stator. The housing stores the oil at a lowermost side thereof so that the scoop-up part and the exhaust outlet are immersed in the oil.
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公开(公告)号：US09627935B2
公开(公告)日：2017-04-18
申请号：US14173397
申请日：2014-02-05
Applicant: DENSO CORPORATION
Inventor： Akira Fukushima , Shin Kusase , Takeo Maekawa , Keiji Kondou
IPC: H02K16/00 , H02K16/04 , H02K3/28 , H02K21/14 , H02K21/22 , H02K19/10 , H02K3/12 , H02K1/27 , H02K16/02 , H02K1/16
CPC classification number: H02K3/28 , H02K1/16 , H02K1/27 , H02K3/12 , H02K16/025 , H02K16/04 , H02K19/103 , H02K21/14 , H02K21/22
Abstract: A multi-gap rotating electric machine includes a rotor, a stator core and a stator coil. The stator core has inner and outer core parts respectively located radially inside and outside of the rotor and each having partially or fully closed slots. The stator coil is formed of electric conductor segments each having a first leg portion inserted in one of the slots of the inner core part, a second leg portion inserted in one of the slots of the outer core part, and a connecting portion connecting the first and second leg portions on one axial side of the rotor. The first and second leg portions respectively have radially inner and outer coil end parts formed on the opposite axial side to the connecting portion. Corresponding radially inner coil end parts are joined to each other, and corresponding radially outer coil end parts are joined to each other.
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Patent Agency Ranking
公开(公告)号：US09006949B2
公开(公告)日：2015-04-14
申请号：US13741697
申请日：2013-01-15
Applicant: Denso Corporation
Inventor： Shin Kusase , Keiji Kondou
CPC classification number: H02K1/2706 , H02K1/16 , H02K1/27 , H02K16/00 , H02K16/04 , H02K21/12 , H02K2213/03
Abstract: A double-stator synchronous motor has a rotor, an inner stator and an outer stator. The rotor has segment-magnetic poles arranged in a ring shape. Magnetic poles formed in the inner stator and the outer stator face to each other in a same circumferential position. Each stator has q (q≧2) slots per pole and phase to disperse magnetomodive force. A radially minimum width Wr of each segment magnetic pole is within a range of 1.3q to 2.3q times of a minimum width Wt of outer teeth. A magnetic depth of a magnetic concave section formed in the segment magnetic pole is within a range of not less than an average width Ws of the inner slots. Because this suppresses demagnetization in the permanent magnets caused by stator magnetomotive force, ferrite magnets are used as buried magnets and magnetic-pole central magnets, and suppress the amount of neodymium magnet used in the rotor.
Abstract translation: 双定子同步电动机具有转子，内定子和外定子。 转子具有环状的分段磁极。 在内定子和外定子上形成的磁极在相同的圆周位置彼此面对。 每个定子每个极点有q（q≥2）个槽，相位分散磁力。 各段磁极的径向最小宽度Wr在外齿的最小宽度Wt的1.3q〜2.3q倍的范围内。 形成在分段磁极中的磁性凹部的磁深在不小于内槽的平均宽度Ws的范围内。 由于这抑制了由定子磁动势引起的永久磁铁的退磁，所以使用铁氧体磁体作为埋入磁铁和磁极中心磁体，并抑制转子中使用的钕磁铁的量。
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公开(公告)号：US10020698B2
公开(公告)日：2018-07-10
申请号：US14100039
申请日：2013-12-09
Applicant: DENSO CORPORATION
Inventor： Keiji Kondou , Shin Kusase , Takeo Maekawa
CPC classification number: H02K1/276 , H02K1/27 , H02K1/2706 , H02K1/2766 , H02K3/12 , H02K16/04 , H02K21/12 , H02K2213/03
Abstract: A multi-gap type rotary electric machine is provided, where the machine is provided a shaft supported rotatably by a baring secured to a housing. An annular rotor is secured to the shaft and configured to rotate together with the shaft. Double stators are secured to the housing and configured to have gaps between the stators and the rotor. Relationships of: 3.5 1 (2) are met, where P6 denotes a circumferential width of each of outer salient poles, P7 denotes a circumferential width of each of inner salient poles, and P13 denotes a circumferential width of each of the outer magnets.
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公开(公告)号：US10020697B2
公开(公告)日：2018-07-10
申请号：US14831114
申请日：2015-08-20
Applicant: DENSO CORPORATION
Inventor： Keiji Kondou , Shin Kusase , Takeo Maekawa , Hiroshi Kaneiwa , Masayoshi Yamamoto
Abstract: A double-stator electric rotating machine with a retainer. The retainer includes a connector which joints between an outer stator and an inner stator. The retainer is placed in contact with an outer peripheral surface of the outer stator and an inner peripheral surface of the inner stator to retain the outer and inner stators together. Specifically, the retainer works to join the outer stator and the inner stator together and also to tightly hold the outer periphery of the outer stator and the inner periphery of the inner stator, thus minimizing misalignment of the outer and inner stators in axial and radial directions there of.
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公开(公告)号：US09979267B2
公开(公告)日：2018-05-22
申请号：US14802630
申请日：2015-07-17
Applicant: DENSO CORPORATION
Inventor： Shin Kusase , Keiji Kondou , Takeo Maekawa
CPC classification number: H02K16/04 , H02K1/27 , H02K3/12 , H02K21/12 , H02K2213/03
Abstract: A double-stator rotating electric machine includes a rotor and a pair of outer and inner stators. The outer stator has a first multi-phase coil wound thereon so as to form magnetic poles upon energization of the first multi-phase coil. The inner stator has a second multi-phase coil wound thereon so as to form magnetic poles upon energization of the second multi-phase coil. The number of the magnetic poles formed by the outer stator is equal to the number of the magnetic poles formed by the inner stator. Each of the magnetic poles formed by the outer stator is located at the same circumferential position as and has an opposite polarity to a corresponding one of the magnetic poles formed by the inner stator. The rotor has yoke portions each of which radially extends so as to form a magnetic flux passage magnetically connecting the outer and inner stators.
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公开(公告)号：US09252634B2
公开(公告)日：2016-02-02
申请号：US13737377
申请日：2013-01-09
Applicant: DENSO CORPORATION
Inventor： Keiji Kondou , Shin Kusase , Takeo Maekawa
CPC classification number: H02K1/06 , H02K16/04 , H02K21/12 , H02K21/14 , H02K2201/03 , H02K2213/03
Abstract: The synchronous motor includes a rotor including a rotor core constituted of segment poles disposed in a ring and a stator including a stator core disposed radially outward or inward of the rotor with a gap therebetween and a multiple-phase stator winding wound on the stator core. Each of the segment poles has a magnetic salient pole characteristic. The rotor is rotated in synchronization with a rotating magnetic field generated when the multiple-phase stator winding is applied with a multiple-phase AC voltage. The lamination thickness as an axial length of the stator core is shorter than the lamination thickness as an axial length of the rotor core.
Abstract translation: 同步电动机包括：转子，其包括由设置在环中的分段磁极构成的转子铁心和定子，该定子包括定子铁心，该定子铁心沿转子的径向外侧或向内设置有间隙，并且定子铁芯上缠绕多相定子绕组。 每个分段极具有磁性突极特性。 转子与多相定子绕组施加多相交流电压时产生的旋转磁场同步旋转。 作为定子铁心的轴向长度的层压厚度比作为转子铁芯的轴向长度的层叠厚度短。
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