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    Motor having increased passage for refrigerant for cooling coils
    4.
    发明授权
    Motor having increased passage for refrigerant for cooling coils 有权

    公开(公告)号：US11190073B2

    公开(公告)日：2021-11-30

    申请号：US16483057

    申请日：2017-12-20

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Mitsuoki Hishida ,  Yuichi Yoshikawa ,  Hirokazu Yamauchi ,  Keiichiro Nukada

    IPC: H02K3/24 ,  H02K1/20 ,  H02K3/18 ,  H02K9/19 ,  H02K5/20

    Abstract: A motor includes a stator including a stator core and teeth respectively protruding from the stator core, and coils respectively wound onto the teeth n (n is an integer of 1 or greater) turns including first to n-th turns. The coils are each made from a conductive member having a polygonal cross section. On a cross section obtained when one of the coils is cut in a corresponding one of directions of protrusion of the teeth from the stator core, the one of the coils includes a recess on at least either a first opposing surface representing an opposing surface to a corresponding one of the teeth or a second opposing surface representing an opposing surface to another one of the coils, which is wound onto adjacent one of the teeth. A space allowing refrigerant used for cooling the coils to pass through is provided between the recess and at least either the first opposing surface or the second opposing surface.

    Coil and motor using same
    6.
    发明授权
    Coil and motor using same 有权

    公开(公告)号：US10965198B2

    公开(公告)日：2021-03-30

    申请号：US16603317

    申请日：2018-01-29

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Mitsuoki Hishida ,  Yuichi Yoshikawa ,  Hirokazu Yamauchi ,  Keiichiro Nukada

    IPC: H02K3/12 ,  H02K15/04 ,  H01F5/04 ,  H02K3/28

    Abstract: A coil includes a series of turns constituted by a first turn to an n-th turn of a conductive wire having a quadrangular cross-section, where the conductive wire is wound in a spiral shape and is stacked in a vertical direction, and n is an integer equal to or greater than 3. In addition, at least a part of the conductive wire of the first turn to the n-th turn is provided with a deformed part whose shape is different from shapes of the other parts. Further, the first turn and the n-th turn are on the both end parts of the series of turns. In addition, at each of the first turn and the n-th turn, the deformed part makes an outer surface positioned on an opposite side with respect to a center of the series of turns extend in a flush manner along a plane intersecting the series of turns.

    Flying device
    9.
    发明授权
    Flying device 有权

    公开(公告)号：US11174010B2

    公开(公告)日：2021-11-16

    申请号：US16341941

    申请日：2017-10-13

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Shinichi Tsutsumi ,  Yuichi Yoshikawa ,  Sho Koyama ,  Keiichiro Nukada ,  Hiroshi Ueda ,  Yuki Nakade

    IPC: B64C27/08 ,  B64C39/02 ,  B64D27/24 ,  H02K1/27 ,  H02K1/22 ,  H02K1/02 ,  H01F1/057

    Abstract: A flying device includes a plurality of rotary vanes, a motor element serving as a driving source for each of the plurality of rotary vanes, the motor element driving and rotating a main shaft of the rotary vanes, and a drive circuit. The motor element includes a stator, a rotor, and a pair of bearings. The stator includes a stator core having an annular yoke and a plurality of teeth projecting inward from the annular yoke, and stator windings wound respectively around the plurality of teeth of the stator core. The rotor includes a permanent magnet of a cylindrical shape located inside the stator core via a gap, the permanent magnet being positioned counter to the plurality of teeth, a rotor yoke in contact with a cylindrical inner wall surface of the permanent magnet, and a shaft pivotally supported at an axis of the rotor yoke, the shaft being connected to the main shaft. The pair of bearings pivotally support the shaft to allow the shaft to rotate freely, and are located respectively on both sides of a direction of a rotating shaft of the rotor. The permanent magnet has anisotropically arranged magnetic poles, and a number of the magnetic poles is P representing an even number. The permanent magnet is configured such that the rotor yoke is smaller in weight than the permanent magnet. The drive circuit controls a stator current supplied to the stator windings.

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