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公开(公告)号：US11948606B2
公开(公告)日：2024-04-02
申请号：US17698343
申请日：2022-03-18
Applicant: Seagate Technology LLC
Inventor： Riyan Alex Mendonsa , Brett R. Herdendorf , Anil J. Reddy , Iraj Jabbari
IPC: G11B33/08 , G05B19/4097 , G11B33/12 , G11B33/14 , H02K5/16
CPC classification number: G11B33/08 , G05B19/4097 , G11B33/121 , G11B33/14 , H02K5/163 , G05B2219/36116
Abstract: A hard disk drive including a base deck with a base member and side walls extending from the base member. The side walls include a non-metallic material and include a structure made from the non-metallic material. The structure is arranged to dampen vibration. The side walls can be formed using an additive manufacturing process.
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公开(公告)号：US20240039382A1
公开(公告)日：2024-02-01
申请号：US17967887
申请日：2022-10-17
Inventor： Mengkun Weng , Song Zhang , Zongqian Qi
Abstract: A high-speed hairdryer brushless motor includes an outer housing, a stator assembly and a rotor assembly. The stator assembly includes a stator core and a coil assembly. The stator core includes a yoke portion and a teeth portion. The teeth portion includes an inner cylinder body and N outer teeth. The inner wall of the inner cylinder body is a complete cylindrical surface. N magnetic insulating grooves are provided on the outer wall of the inner cylinder body, each magnetic insulating groove being provided axially along an entire length of the inner cylinder body. The coil assembly is wound on the outer teeth of the teeth portion. Each magnetic insulating groove is a V-shaped groove that opens toward the exterior of the inner cylinder body. The rotor assembly includes a rotating shaft and a rotor magnet. An air gap is provided between the rotor magnet and the cylindrical surface.
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公开(公告)号：US20230412012A1
公开(公告)日：2023-12-21
申请号：US18460421
申请日：2023-09-01
Applicant: Ashwoods Electric Motors Limited
Inventor： Lloyd ASH
IPC: H02K1/14 , H02K5/16 , H02K11/21 , H02K7/00 , H02K11/215 , H02K11/25 , H02K1/276 , H02K15/02 , H02K15/03
CPC classification number: H02K1/148 , H02K5/163 , H02K11/21 , H02K7/006 , H02K15/03 , H02K11/25 , H02K1/276 , H02K15/022 , H02K11/215
Abstract: A radial flux electrical machine is disclosed. The machine comprises a body of the stator having a body that defines a longitudinal axis a substantially cylindrical inner surface and an inner volume, and having a plurality of electromagnetic elements, each of which includes a stator core and a winding of electrically conductive material located around at least part of the stator core of the electromagnetic element, the electromagnetic elements being arranged around the inner surface of the stator, and operable to induce a magnetic flux field in a radial direction in the inner volume of the stator, and a rotor located within the inner volume of the stator, and rotatable with respect to the stator.
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公开(公告)号：US20230184262A1
公开(公告)日：2023-06-15
申请号：US17859746
申请日：2022-07-07
Inventor： San-Qiang SONG , Dian Sheng LIU , Shi Man XU
IPC: F04D29/66 , H02K5/16 , H02K7/08 , H02K21/22 , F04D25/06 , F04D19/00 , F04D29/043 , F04D29/046 , F04D29/32
CPC classification number: F04D29/668 , H02K5/163 , H02K7/085 , H02K21/22 , F04D25/06 , F04D19/002 , F04D29/043 , F04D29/046 , F04D29/325
Abstract: A fan device includes a frame, a stability maintenance assembly, a shaft, an impeller, and a driving assembly. The frame includes a base and a bearing seat protruding from the base and having an accommodation space. The stability maintenance assembly is disposed in the accommodation space and includes a bearing and a magnet arranged coaxially. The bearing is located above the magnet and magnetized by the magnet. The shaft is disposed through the magnet and the bearing. The impeller is fixed to the shaft so as to be rotatable relative to the frame via the shaft and the bearing. The driving assembly includes a stator and a rotor. The stator is sleeved on the bearing seat of the frame, the rotor is mounted on the impeller and surrounds the stator, and the driving assembly is configured to drive the impeller to rotate relative to the frame.
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公开(公告)号：US20190093705A1
公开(公告)日：2019-03-28
申请号：US16118435
申请日：2018-08-31
Applicant: NIDEC CORPORATION
Inventor： Kunio SAKURADA , Akinobu SUMIJI , Akihiro YUDATE , Sho NAKAMURA
CPC classification number: F16C32/0633 , F04D25/06 , F04D25/062 , F04D29/056 , F04D29/063 , F04D29/083 , F04D29/102 , F16C33/745 , F16C2360/46 , H02K5/163 , H02K5/1675 , H02K7/085 , H02K7/14 , H02K21/22
Abstract: A bearing apparatus includes a cylindrical sleeve, a shaft rotatably inserted in the sleeve, lubricating oil arranged in a gap defined between an inner circumferential surface of the sleeve and an outer circumferential surface of the shaft, a seal member arranged at an axially upper end portion of the sleeve projecting from the sleeve, and an annular member fixed to an outer circumferential surface of the axially upper end portion of the shaft to rotate together with the shaft. The annular member includes a projecting portion projecting axially downward. The seal member and an axially lower end portion of the projecting portion overlap each other when viewed in at least one of the axial direction or a radial direction.
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Patent Agency Ranking
公开(公告)号：US20180226847A1
公开(公告)日：2018-08-09
申请号：US15750454
申请日：2016-08-01
Applicant: LG Innotek Co., Ltd.
Inventor： SHUNG HUN WOO , SEONG JIN LEE
Abstract: The present invention provides a housing including a teeth support part formed to protrude from the inner bottom surface thereof so as to come into contact with the end surfaces of stator teeth and support the same, and thus provides an advantageous effect of preventing the generation of cogging torque, which can occur because of the non-uniform assembly of a stator.
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公开(公告)号：US20180090166A1
公开(公告)日：2018-03-29
申请号：US15828474
申请日：2017-12-01
Applicant: Nidec Corporation
Inventor： Tomohiro YONEDA , Takeshi OHIRO , Takayuki ISHINO
CPC classification number: G11B19/2036 , G11B33/027 , G11B33/1473 , H02K1/2786 , H02K5/163 , H02K7/08 , H02K7/085 , H02K15/03
Abstract: In a spindle motor, a cup portion of a base member includes a cylindrical portion coaxial or substantially coaxial with a central axis extending in a vertical direction and a bottom plate portion defined integrally with the cylindrical portion, and located to close a lower portion of the cylindrical portion. The bearing mechanism is inside of the cup portion and an outer circumferential surface of the bearing mechanism and an inner circumferential surface of the cylindrical portion include a first adhesive layer located therebetween. The base member includes a communicating hole that passes through the bottom plate portion in an axial direction. The communicating hole includes a second adhesive layer located therein.
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公开(公告)号：US09853520B2
公开(公告)日：2017-12-26
申请号：US14772123
申请日：2013-03-28
Applicant: Koji Yabe , Naohiro Oketani , Hiroshi Yamanaka , Hironori Yabuuchi
Inventor： Koji Yabe , Naohiro Oketani , Hiroshi Yamanaka , Hironori Yabuuchi
CPC classification number: H02K5/161 , F16C35/042 , F16C2380/26 , H02K5/08 , H02K5/15 , H02K5/163 , H02K5/24
Abstract: A molded motor 100 includes a molded stator formed by providing a molding resin to a stator, a rotor inside the molded stator, a pair of bearings supporting a rotor shaft of the rotor, and an insulating bracket fitted in an inner circumferential part of an opening formed at an axial end of the molded stator to surround and support an outer ring of the bearing with a concave part formed at a center, and formed of an insulating resin.
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公开(公告)号：US20170264159A1
公开(公告)日：2017-09-14
申请号：US15529016
申请日：2015-11-11
Inventor： Kota KITAMURA , Hiroyuki TSUBAKIMOTO , Ryohei OISHI
CPC classification number: H02K5/163 , H02K1/18 , H02K3/34 , H02K5/04 , H02K5/08 , H02K5/14 , H02K5/15 , H02K5/16 , H02K11/21 , H02K11/30 , H02K15/028 , H02K15/03 , H02K21/14 , H02K21/16 , H02K29/08
Abstract: An inner-rotor-type motor is configured such that a projecting portion is formed on an inner circumferential surface of a housing, a recess portion is formed on an outer circumferential surface of a stator, the stator is positioned with respect to the housing by the recess portion and the projecting portion being fitted to each other, the stator is configured by an annular insulator having an attachment surface being brought into close contact with a core end surface at one axial end of a stator core, a sensor substrate is attached to the insulator so as to be capable of detecting a rotation angle of a rotor, the recess portion of the stator is configured by a cutout portion being formed in an area that is a part of an outer circumferential surface of the insulator and includes a portion that is brought into close contact with the core end surface.
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公开(公告)号：US20170141641A1
公开(公告)日：2017-05-18
申请号：US15313236
申请日：2015-05-06
Applicant: KINGCLEAN ELECTRIC CO., LTD.
Inventor： Zugen NI
CPC classification number: H02K5/161 , A47L9/22 , H02K1/22 , H02K1/28 , H02K5/163 , H02K7/083 , H02K7/085 , H02K7/14 , H02K15/02 , H02K15/03 , H02K15/14
Abstract: A rotor applicable to a vacuum cleaner motor includes a rotating shaft, a rotor magnetic steel, a load blade, two bearings between the rotor magnetic steel and the load blade, and a pre-tightening spring for providing precompressions to the bearings at two sides. The bearings are arranged between the load blade and the rotor magnetic steel, so that the motor structure is simplified, the overall size of the motor is reduced, and the machining and manufacturing of the vacuum cleaner motor are facilitated. As the pre-tightening spring is arranged between the two bearings, the bearings are close to the load blade as much as possible under the effect of pre-tightening force.
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