Coil device having a core with plate shaped coil bodies

    公开(公告)号:US11811282B2

    公开(公告)日:2023-11-07

    申请号:US17285457

    申请日:2019-10-17

    CPC classification number: H02K3/04 H02K1/12 H02K3/12 H02K3/28

    Abstract: A coil device includes a first coil including a plate-shaped first coil body having a first and second end. The first coil body is spirally wound on a columnar portion along the extending direction of the columnar portion such that the second end is positioned on one side in the extending direction relative to the first end. The coil device further includes a second coil including a plate-shaped second coil body having a third end and a fourth end. The second coil body is spirally wound on the columnar portion along the extending direction such that the third end is positioned on the one side in the extending direction relative to the second end of the first coil, and the fourth end is positioned on the one side in the extending direction relative to the third end. The second coil is in electrically parallel connection with the first coil.

    Rotor and electric motor
    2.
    发明授权

    公开(公告)号:US12266977B2

    公开(公告)日:2025-04-01

    申请号:US17995654

    申请日:2021-02-08

    Abstract: A rotor includes: a rotor core including a plurality of first holes and a plurality of second holes; and a plurality of first permanent magnets arranged in the plurality of first holes, wherein the first holes and the second holes are provided radially around a rotating shaft, the rotor core in each of the plurality of second holes has a radial length smaller than a radial length of the rotor core in each of the plurality of first holes, each of the plurality of second holes is located closer to an inner side in the radial direction of the rotor core with respect to a first hole adjacent to the second hole in a circumferential direction of the rotor core among the plurality of first holes, and includes a protrusion protruding toward the first hole adjacent to the second hole in the circumferential direction of the rotor core.

    Coil mounting structure
    3.
    发明授权

    公开(公告)号:US11929654B2

    公开(公告)日:2024-03-12

    申请号:US17285458

    申请日:2019-10-17

    CPC classification number: H02K3/28 H02K1/165 H02K3/12 H02K3/48 H02K1/148 H02K3/522

    Abstract: Inclined surfaces are formed in areas adjacent to a tooth protruding from the inner circumferential surface of the yoke, on both sides in a motor rotation circumferential direction, and the inclined surfaces are inclined or curved toward a protruding direction of the tooth as a distance from the tooth increases in the motor rotation circumferential direction. The conductive wire includes parts extending in the motor rotation circumferential direction on both sides of the tooth in the motor rotational shaft direction in each of first to n-th turns, and bent portions bending in a thickness direction of the conductive wire are formed in the parts so as to align in a winding axis direction through the width of the conductive wire. Portions of the conductive wire on are inclined toward the protruding direction of the associated tooth as the distance from the bent portion increases in the motor rotation circumferential direction.

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