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公开(公告)号：US12237722B2
公开(公告)日：2025-02-25
申请号：US17639756
申请日：2020-07-09
Applicant: Schaeffler Technologies AG & Co. KG
Inventor： Wilfried Schwenk , Michael Schlosser , Patrick Wisbar
Abstract: A laminated rotor core for a rotor of a permanently excited electric machine and to a method for producing same are provided. The laminated rotor core consists of a plurality of stacked lamination rings, each lamination ring consisting of a plurality of circular segments. Each circular segment has multiple receiving openings, which are arranged in a V-shaped manner relative to each other in pairs, for permanent magnets and multiple passages for respective fixing elements. The laminated rotor core is mounted on a holding disc using the fixing elements, which run in the passages of the laminated rotor core.
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公开(公告)号：US20250055333A1
公开(公告)日：2025-02-13
申请号：US18685325
申请日：2022-06-13
Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
Inventor： Yoshiyasu SHIBAYAMA , Keigo IMAMURA , Kazuki UETA
Abstract: Each permanent magnet of a rotor includes: a first and a second linear portion arranged in a circumferential direction and extending from an outer periphery side of a rotor core toward a rotation axis; a third linear portion located between the first and the second linear portion in the circumferential direction and extending obliquely with respect to a radial direction and separately from the rotation axis from an end of the first linear portion closer to the rotation axis; and a fourth linear portion located between the second and the third linear portion in the circumferential direction and extending obliquely with respect to the radial direction and separately from the rotation axis from an end of the second linear portion closer to the rotation axis. Thicknesses of the third linear portion and the fourth linear portion are smaller than thicknesses of the first linear portion and the second linear portion.
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公开(公告)号：US12224633B2
公开(公告)日：2025-02-11
申请号：US17637046
申请日：2020-09-22
Applicant: HENGDIAN GROUP INNUOVO ELECTRIC CO., LTD.
Inventor： Zhonghua Wei , Kedi Shan , Junjian Lu , Jianhua Chen , Hangdong Tang
IPC: H02K15/03
Abstract: A auxiliary device for bonding a casing and magnets, comprising a press (10) and a housing positioning seat (2), the press (10) including a press block (12). A vertically arranged raising and lowering rod (3) is provided below the press block (12), the raising and lowering rod (3) being supported on the housing positioning seat (2) by means of an elastic piece. A plurality of push plates (4) are provided on the circumferential side of the raising and lowering rod (3), the push plates (4) being slidingly mated on the housing positioning seat (2) along the radial direction of the raising and lowering rod (3). The raising and lowering rod (3) moves up and down in order to cause the push plates (4) to move in the radial direction of the raising and lowering rod (3), and the sides of the push plates (4) away from the raising and lowering rod (3) are provided with contact faces used to make contact with magnets. The press block (12) is provided with a first pressing part (121) used to exert force on the raising and lowering rod (3), and a second pressing part (122) used to exert force on the magnets located on the side of the push plates (4). The housing and the auxiliary magnet bonding device feature the strength of being able to maintain the position the magnets were in when they were bonded in order to prevent the fixing position of the magnets from deviating from a set position, in order to improve the mounting precision of the magnets, facilitating fixing between the magnets and the housing.
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公开(公告)号：US20250038597A1
公开(公告)日：2025-01-30
申请号：US18779431
申请日：2024-07-22
Applicant: NIDEC CORPORATION
Inventor： Mitsuhiro TAKEMOTO , Masahiro SHIRAISHI
IPC: H02K1/2791 , H02K1/30 , H02K15/03 , H02K21/22
Abstract: A rotor rotatable about a central axis extending in an axial direction includes a yoke that is a cylindrical magnetic body extending in the axial direction. A plurality of ridge portions of the yoke are connected to one axial end of the yoke cylindrical portion in a cylindrical shape and extending in the axial direction, and are arranged at intervals in the circumferential direction. In each ridge portion, a protrusion protrudes radially inward from one axial end of the yoke cylindrical portion. Further, an extension extends in the other axial direction from the radially inner end of the protrusion along the radially inner surface of the yoke cylindrical portion. A magnet is located between the extensions adjacent to each other in the circumferential direction. The ridge portion is integral with the yoke cylindrical portion to define a single structure.
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公开(公告)号：US12212184B2
公开(公告)日：2025-01-28
申请号：US18214982
申请日：2023-06-27
Applicant: In Motion US, LLC
Inventor： David M. Coulson , Gerald W. Brown
Abstract: Embodiments of the present invention are directed to a generator for connecting to a predefined load, where the generator is designed and constructed to meet one or more requirements of the predefined load. In specific embodiments the one or more requirements include providing a minimum output voltage while starting the predefined load at or above ambient temperature and providing an output voltage that does not exceed an upper voltage limit while being driven at full speed without any load current at or below ambient temperatures, while maintaining high efficiency under a specified full load running condition and keeping the overall cost and size of the generator low.
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Patent Agency Ranking
公开(公告)号：US20250023398A1
公开(公告)日：2025-01-16
申请号：US18899326
申请日：2024-09-27
Applicant: ABB SCHWEIZ AG
Inventor： Darren Tremelling , Elio Perigo , Sheng Zhong
Abstract: A permanent magnet rotor can include a rotor body and at least one magnet. The rotor body can include at least one rotor cavity. The at least one magnet includes, in part, Mn—Bi particles and the at least one magnet can be either a sintered magnet or a polymer bonded magnet. The at least one magnet can be located, at least partially, in the at least one rotor cavity. Further, the at least one magnet can be installed in the at least one rotor cavity after forming the at least one magnet or the at least one magnet can be formed in the at least one rotor cavity using a mold. Moreover, the polymer bonded magnet can include a composite of polymer matrix and Mn—Bi particles.
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公开(公告)号：US12184144B2
公开(公告)日：2024-12-31
申请号：US17521667
申请日：2021-11-08
Applicant: Francis X Gentile
Inventor： Francis X Gentile
IPC: H02K5/04 , H02K1/22 , H02K3/47 , H02K5/00 , H02K5/15 , H02K21/12 , H02K5/24 , H02K7/18 , H02K15/03
Abstract: Simple to manufacture electric generators or motors and methods of manufacturing such are disclosed. Such devices are preferably manufactured from 2-dimensionally cut, flat stock materiel. The generator or motor has two large diameter rotors to enable, for example, useful generation of electricity at low revolutions per minute. The frame of the generator includes stators sidewalls with castellations on the periphery of the walls. Castellated end plates removably interlock with the stators. The rotors drive magnets past the stators in the frame of the device. In preferred embodiments, rotors are driven by human legs or arms, low speed wind, or water with low or zero water drop distance.
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公开(公告)号：US20240429797A1
公开(公告)日：2024-12-26
申请号：US18743988
申请日：2024-06-14
Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
Inventor： Takeshi NOMURA
Abstract: A method for manufacturing a rotor includes filling magnet housing holes, which accommodate magnets, with plastic that has been heated to a specified temperature to be molten, thereby heating a rotor core with heat of the plastic, arranging an end plate on one end face in the axial direction of the rotor core, thereby heating the end plate with heat of the heated rotor core, and welding the end plate to the rotor core. The welding the end plate includes welding the end plate to the rotor core in a state in which, during decrease of temperatures of the rotor core and the end plate, the temperatures of the rotor core and the end plate are lower than the specified temperature and within an operational temperature range for use of the rotor.
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公开(公告)号：US20240421674A1
公开(公告)日：2024-12-19
申请号：US18737228
申请日：2024-06-07
Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA
Inventor： Yoshinori ISHIKAWA
Abstract: A method for manufacturing a laminated iron core includes sequentially performing multiple types of machining on designated portions of a workpiece from which iron core pieces are to be punched out, determining whether standard machining has been performed on each designated portion, forming core piece blocks by stacking the iron core pieces to have a specified stacking height, and forming, when it is determined that the standard machining has not been performed on any of the designated portions through the determining whether standard machining has been performed, a dummy block by stacking the iron core pieces that include the iron core piece formed by punching out the designated portion not having been subjected to the standard machining, the formed dummy block having a stacking height different from the specified stacking height.
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公开(公告)号：US20240413686A1
公开(公告)日：2024-12-12
申请号：US18733549
申请日：2024-06-04
Applicant: Robert Bosch GmbH
Inventor： Simon Mensak , Robert Bonasewicz
Abstract: A brushless electric machine, in particular a brushless DC motor, has a stator and a rotor arranged within the stator so as to be rotatable relative thereto. The rotor has a cylindrical base body which is non-rotatably connected to a machine shaft and carries a plurality of permanent magnets on its outer circumference, and the stator has a stator winding with a plurality of single-tooth windings for driving the rotor via an electrically generated magnetic field. The permanent magnets of the rotor are fixed by a thin-walled reinforcement radially surrounding them, wherein the reinforcement is connected to the permanent magnets by a plurality of welding points in a materially and/or positively locking manner.
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