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1.发明公开
公开(公告)号：EP4459841A1
公开(公告)日：2024-11-06
申请号：EP22915579.1
申请日：2022-11-21
申请人： Nidec Corporation
发明人： HASHIMOTO, Ayumu
摘要： A stator core includes a tooth portion having a first core and a second core that is connected to a radially inner side of the first core. In at least one slot between the tooth portions adjacent to each other in the circumferential direction, the first core includes a first umbrella portion at a radially inner end portion, the first umbrella portion being located on both sides in the circumferential direction of the slot and protruding in the circumferential direction, and the second core includes a second umbrella portion at a radially inner end portion, the second umbrella portion being located on both sides in the circumferential direction of the slot and protruding in the circumferential direction.
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公开(公告)号：EP4312350A1
公开(公告)日：2024-01-31
申请号：EP21933315.0
申请日：2021-12-28
申请人： Nidec Corporation
发明人： KANNO, Tomohisa , TANGE, Hiroshi
IPC分类号： H02K3/04 , H02K15/085 , H02K1/16
摘要： A stator from a first aspect of the present invention includes: a stator core having a plurality of slots penetrating in an axial direction; and a plurality of coil wires arranged in the slots, in which the coil wires have a circular cross-sectional shape, and side surfaces in circumferential both ends of the slot are planes axially extending with a constant circumferential width from a radially inner end to a radially outer end. A manufacturing method of a stator from a second aspect of the present invention is a manufacturing method of a stator including a stator core having a plurality of slots penetrating in an axial direction, the manufacturing method including: a process of annularly winding a coil wire having a circular cross-sectional shape to form a coil; and a process of inserting the coil into the slot, in which side surfaces in circumferential both ends of the slot are planes axially extending with a constant circumferential width from a radially inner end to a radially outer end.
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公开(公告)号：EP4221099A1
公开(公告)日：2023-08-02
申请号：EP23166801.3
申请日：2017-12-21
申请人： Nidec Corporation
发明人： Sato, Motoki , Tabuchi, Tetsuya
IPC分类号： H04L12/28 , G05B19/418 , H02P29/00 , H02P5/74
摘要： A multi-motor system comprises a plurality of motor units and a communications network connecting the plurality of motor units. Eeach of the plurality of motor units includes a motor, a control circuit to generate a control signal for causing the motor to rotate, a motor driving circuit to flow a current in the motor based on the control signal, a storage device storing an identifier uniquely identifying the motor within the communications network, and a communication circuit to perform communications via the communications network. The respective identifiers of the plurality of motor units are assigned by a predetermined order; and one specific motor unit having the smallest identifier arbitrates the communications to be performed within the communications network.
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公开(公告)号：EP4142141A1
公开(公告)日：2023-03-01
申请号：EP22191892.3
申请日：2022-08-24
申请人： Nidec Corporation
发明人： KISHI, Sakuya , TAKAE, Koichi
摘要： A motor adjustment method adjusts a motor (M) driven by a control device (100). The motor adjustment method includes: acquiring forward rotation information indicating a change in a value of a current flowing through a drive unit (110) at the time of a rotor (310) rotating in a forward direction when a Hall sensor setting position is changed; acquiring reverse rotation information indicating a change in a value of a current flowing through the drive unit (110) at the time of the rotor (310) rotating in a reverse direction when the Hall sensor setting position is changed; and determining a Hall sensor adjustment position on the basis of the forward rotation information and the reverse rotation information. The Hall sensor adjustment position indicates a position obtained by adding a correction amount to the Hall sensor setting position.
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公开(公告)号：EP4089291A1
公开(公告)日：2022-11-16
申请号：EP22171953.7
申请日：2022-05-06
申请人： Nidec Corporation
发明人： YOSHINO, Shingo
IPC分类号： F16B5/02
摘要： Provided is a holding member (20) that holds a motor (30). The holding member includes a base (21) and multiple attachment parts (23). The base has the motor disposed on an upper surface thereof with a center axis of rotation of the motor arranged in an up-down direction. The attachment part is disposed radially outside the base. The attachment part includes a frame (231), a pair of grippers (232), a first projecting part (233), and a second projecting part (234). The frame surrounds an insertion hole (23a) penetrating in an axial direction and is connected to the base. The pair of grippers is disposed inside the insertion hole and extends radially outward from the base. The first projecting part is disposed between the pair of grippers and projects radially outward from the base. The second projecting part projects from the frame into the insertion hole.
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公开(公告)号：EP4087093A1
公开(公告)日：2022-11-09
申请号：EP20909846.6
申请日：2020-09-30
申请人： Nidec Corporation
发明人： YAN, Guo-Jhih , WU, Keng chang , WANG, Kuo-Min
IPC分类号： H02K1/27
摘要： An embodiment of the present invention provides a rotor core and a motor including the rotor core. When a rotor yoke is provided with multiple magnetic pole core groups in a circumferential direction and each magnetic pole core group includes a magnetic conductor at its center and multiple permanent magnets around the magnetic conductor, structure becomes compact and reliable as a whole, and thus another mechanical structure for maintaining rigidity of the rotor is not required. The method for manufacturing the magnetic pole core groups facilitates mass production and manufacturing without causing a cumulative error in manufacturing and assembly. The center of each magnetic pole core group is formed of the magnetic conductor, so that the number of magnets to be used can be reduced at the maximum to achieve low cost. Then, the multiple permanent magnets provided around the magnetic conductor enables increasing magnetic flux concentration effect while preventing magnetic flux leakage. Thus, both high efficiency and high performance of the motor can be achieved.
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公开(公告)号：EP4049820A1
公开(公告)日：2022-08-31
申请号：EP22158603.5
申请日：2022-02-24
申请人： Nidec Corporation
发明人： TAKENAKA, Akira , IWATA, Koichi , TSUJI, Hideki , TANAKA, Yosuke
摘要： Provided are a first mold (2) provided with a resin pot (5) having opposite ends with respective opening portions (5a, 5b), a plunger (6) that is located in the resin pot (5) and is movable from one of the opening portions (5a, 5b) of the resin pot (5) toward the other, and a second mold (16) on which the rotor body (100) is mounted and that is located facing the first mold (2). The first mold (2) includes a first mold body (3) having the resin pot (5), a runner plate (11) in a tabular shape located between the first mold body (3) and the second mold (16) while being allowed to separate from the first mold body (3) in a thickness direction, the runner plate (11) having a recess located on a side in contact with the first mold body (3), the recess constituting a part of a flow path (14) for allowing the resin melted to flow, and a resin accommodating space (X) surrounded by the resin pot (5), the plunger (6), and the recess to accommodate melted resin in a state where the first mold body (3) and the runner plate (11) are in contact with each other. The flow path (14) communicates with the resin accommodating space (X) in a state where the first mold body (3) and the runner plate (11) are in contact with each other.
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公开(公告)号：EP4037164A1
公开(公告)日：2022-08-03
申请号：EP20868049.6
申请日：2020-08-26
申请人： Nidec Corporation
发明人： NODA, Shinichi
摘要： One aspect of a rotary electric machine includes: a bearing that holds a rotation shaft and is capable of rotating the rotation shaft; a housing in which the bearing is incorporated; a rotor that is fixed to the rotation shaft and rotates; and a stator that is fixed to the housing. The stator includes: a stator core having a tooth portion protruding toward the rotor and extending along the rotation shaft; a winding wound around the stator core; and a plurality of magnetic detection elements attached to an end portion of the stator core in a direction in which the rotation shaft extends while being separated from each other in a rotation direction of the rotation shaft.
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公开(公告)号：EP4027496A1
公开(公告)日：2022-07-13
申请号：EP20861718.3
申请日：2020-08-20
申请人： Nidec Corporation
发明人： NODA, Shinichi
摘要： A jumper wire is protected based on a vibration mode. A motor includes an outer frame that extends in a tubular shape, a stator that is fixed inside the outer frame, a plurality of wall portions that are formed integrally with the outer frame, protrude in a wall shape from an outer surface of the outer frame, and extend in a direction in which the outer frame extends, a connection portion that connects the plurality of wall portions to form an integral protrusion body, and windings that are wound around the stator in a distribution manner, and in which a jumper wire straddles a nearest neighbor location of an entire circumference of a core of the stator at a center of the integral protrusion body.
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公开(公告)号：EP3952063A1
公开(公告)日：2022-02-09
申请号：EP20778532.0
申请日：2020-01-31
申请人： Nidec Corporation
发明人： HONDA,Takeshi
IPC分类号： H02K1/18
摘要： An annular stator core includes a core piece in which a first laminated member and a second laminated member are laminated. Each of a first core back portion and a first core back portion adjacent thereto includes either a first protrusion or a first recess, and the first protrusion and the first recess face each other. Each of a second core back portion and a second core back portion adjacent thereto includes either a second protrusion or a second recess, and the second protrusion and the second recess face each other. The first core back portion and the adjacent first core back portion are in contact with each other on a radially outer side and on a radially inner side sandwiching a vertex of the first protrusion, and the second core back portion and the adjacent second core back portion are in contact with each other on a radially outer side and on a radially inner side sandwiching a vertex of the second protrusion.
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