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公开(公告)号：EP4152565A1
公开(公告)日：2023-03-22
申请号：EP21805083.9
申请日：2021-04-30
IPC分类号： H02K1/14
摘要： A rotary electrical device includes a rotor having a substantially hollow cylindrical shape or a substantially solid cylindrical; and a stator having a substantially annular shape and disposed to surround a rotation axis of the rotor. The stator includes a winding that is wound around the rotation axis, and a stator core that surrounds the winding and is constituted by a magnetic powder core. The stator core includes a plurality of cores facing each other with the winding interposed therebetween in an axial direction of the stator. One core of the plurality of cores includes a yoke that is in contact with or in proximity to one other core of the plurality of cores, and one or more claw magnetic poles that protrude from the yoke toward the rotor in the radial direction. The one or more claw magnetic poles of the one core are alternately arranged with claw magnetic poles of the one other core, with which or to which the yoke is in contact or in proximity, in a circumferential direction of the stator. The yoke has at least one yoke surface that is substantially parallel to the axial direction, and the yoke surface of the yoke is in contact with or in proximity to the one other core.
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公开(公告)号：EP4152571A1
公开(公告)日：2023-03-22
申请号：EP21804029.3
申请日：2021-04-26
摘要： A motor (1) comprises a stator including a plurality of coil units (7), and a rotor (3) that is configured to be rotatable about a rotation axis. Each of the plurality of coil units (7) has a coil (20) and a stator core (40). Each stator core (40) has a plurality of protrusion parts (54, 64). Each coil (20) has two leader lines that extend from a winding part (22). At least one of a first leader line (23), which is one among the two leader lines, and a second leader line (24), which is the other among the two leader lines, is disposed so as to pass between the stator cores (40) of two coil units (7). A magnetic pole is disposed at one among an inner peripheral part (PA) and an outer peripheral part of each stator core (40), and the first leader lines (23) and the second leader line (24) are disposed at the other.
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公开(公告)号：EP4156460A1
公开(公告)日：2023-03-29
申请号：EP21808752.6
申请日：2021-05-17
摘要： A rotary electrical device includes a rotor having a substantially hollow cylindrical shape or a substantially solid cylindrical shape and configured to be rotatable; and a stator having a substantially annular shape and disposed in a radial direction of the rotor to surround a rotation axis of the rotor. The stator includes a plurality of stator units that are stacked in an axial direction of the rotor. Each of the stator units includes a winding that is wound in a substantially annular shape around the rotation axis, a stator core that surrounds the winding, and one or more claw magnetic poles that protrude radially toward the rotor from each of two end portions in an axial direction of the stator core. The rotor includes a magnet that radially faces at least a portion of any of claw magnetic poles of the stator at a predetermined rotation position. At least one of magnet end portions in an axial direction of the magnet protrudes further in the axial direction than all of the claw magnetic poles of the stator.
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公开(公告)号：EP3952061A1
公开(公告)日：2022-02-09
申请号：EP20776336.8
申请日：2020-03-25
摘要： At least one of a stator (10) and a rotor (50, 100) of a motor (1) includes an iron core (11, 111) formed by a powder magnetic core. A first end plate (61) is arranged to contact one end surface (10B) of the iron core (11) in an axial direction. A second end plate (62) is arranged to contact another end surface of the iron core (11) in the axial direction. A rod-like portion (63) is fixed to the first end plate (61) and the second end plate (62) in a state in which the rod-like portion (63) is inserted in a through hole of the iron core (11), and the iron core (11) is sandwiched by the first end plate (61) and the second end plate (62) in the axial direction of the rotor.
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公开(公告)号：EP4318900A1
公开(公告)日：2024-02-07
申请号：EP22780646.0
申请日：2022-03-25
发明人： YANAGIDA, Yasuto , ASARI, Tsukasa , UEDA, Akane , KIDO, Naohiro , ASANO, Yoshinari , HIBINO, Hiroshi
摘要： A motor 1 according to an embodiment of the present disclosure includes a rotor 10 configured to freely rotate around a rotation axis AX; and a stator 20 arranged inside the rotor 10 and including a stator unit 21 of a claw-pole type, the stator unit including a winding wire 212 that is annularly wound around the rotation axis AX and a stator core 211 provided so as to surround the winding wire, wherein the stator 20 includes an inner space 24A around the rotation axis AX and in communication with an outer side of the rotor 10, such that heat can be radiated to the inner space 24A.
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公开(公告)号：EP4040641A1
公开(公告)日：2022-08-10
申请号：EP20871503.7
申请日：2020-09-18
摘要： A technique that improves cooling performance of a motor including an iron core formed of a powder magnetic core is provided. A motor 1 according to one embodiment of the present disclosure includes a stator iron core 211 formed of a powder magnetic core and an inserting member 24 disposed so as to face at least a portion of a wall surface of the stator iron core 211, the inserting member being configured to enable heat to be transferred in an axial direction. The motor 1 includes a heat dissipation member 40 configured to enable the heat from the inserting member 24 to be transferred in the axial direction. The motor 1 includes a fixing member 30 that fixes the iron core 211 and the inserting member 24. Stress generated between the stator iron core 211 and the inserting member 24 is less than each of stress generated between the stator iron core 211 and the fixing member 30, and stress generated between the inserting member 24 and the fixing member 30. Each of the inserting member 24 and the stator iron core 211 is configured to enable the heat to be transferred.
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公开(公告)号：EP3952062A1
公开(公告)日：2022-02-09
申请号：EP20779349.8
申请日：2020-03-23
IPC分类号： H02K1/14
摘要： A stator includes: stator iron cores (11) stacked in an axial direction of a rotor (50); and an interphase insulating member (40, 80, 90) arranged between the stator iron cores (11). The stator iron cores (11) each include a circular back yoke (12) and a stator claw magnetic pole (13) that protrudes from the back yoke (12) in a radial direction of the rotor (50). The interphase insulating member (40, 80, 90) includes an insulating portion (41, 81, 91), arranged between adjacent ones of the stator iron cores (11), and a support (42, 82, 92). The stator claw magnetic pole (13) is in contact with the support (42, 82, 92) in at least one of a circumferential direction of the rotor (50) and the radial direction of the rotor (50).
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