公开(公告)号：US12027919B2

公开(公告)日：2024-07-02

申请号：US17577644

申请日：2022-01-18

申请人： Black & Decker Inc.

发明人： Ming Jin ,  Weifeng Qian ,  Changxing Lu ,  Tong Zheng ,  Fulong Liu ,  Yeli Gu

IPC分类号： H02K1/276 ,  H02K15/03

CPC分类号： H02K1/276 ,  H02K15/03

摘要： A motor assembly is provided including a stator assembly and a rotor assembly rotatably disposed relative to the stator assembly. The rotor assembly includes a rotor core having magnet pockets formed therethrough along a longitudinal direction, permanent magnets received within the magnet pockets, and a spring structure disposed in contact with the end of the rotor core. The spring structure includes spring elements configured to apply biasing forces to the permanent magnets along the longitudinal direction of the magnet pockets. Optionally a magnet retention end cap is provided to secure the spring structure to the end of the rotor core.

公开(公告)号：US20220231553A1

公开(公告)日：2022-07-21

申请号：US17577644

申请日：2022-01-18

申请人： Black & Decker Inc.

发明人： Ming Jin ,  Weifeng Qian ,  Changxing Lu ,  Tong Zheng ,  Fulong Liu ,  Yeli Gu

IPC分类号： H02K1/276 ,  H02K15/03

摘要： A motor assembly is provided including a stator assembly and a rotor assembly rotatably disposed relative to the stator assembly. The rotor assembly includes a rotor core having magnet pockets formed therethrough along a longitudinal direction, permanent magnets received within the magnet pockets, and a spring structure disposed in contact with the end of the rotor core. The spring structure includes spring elements configured to apply biasing forces to the permanent magnets along the longitudinal direction of the magnet pockets. Optionally a magnet retention end cap is provided to secure the spring structure to the end of the rotor core.

公开(公告)号：US12068639B2

公开(公告)日：2024-08-20

申请号：US17832315

申请日：2022-06-03

申请人： Black & Decker Inc.

发明人： Changxing Lu ,  Abraham Sanchez ,  Tong Zheng ,  Fulong Liu ,  Yeli Gu ,  David J. Smith ,  Shailesh P. Waikar

IPC分类号： H02K1/30 ,  H02K1/2733 ,  H02K7/14 ,  H02K15/03 ,  H02K29/00

CPC分类号： H02K1/30 ,  H02K1/2733 ,  H02K7/145 ,  H02K15/03 ,  H02K29/00

摘要： A brushless direct-current (BLDC) motor is provided. The motor includes a stator including a stator core, stator teeth, and windings; a rotor shaft disposed within the stator and extending along a longitudinal axis; and a rotor. The rotor includes a rotor core having a cylindrical body, a permanent magnet ring mounted on an outer surface of the cylindrical body with no intermediate adhesive therebetween, and metal sleeve securely fitted outside the permanent magnet ring. The metal sleeve includes a flange extending radially inwardly that covers an axial end of the permanent magnet ring and is bonded to the rotor core to secure the permanent magnet ring to the rotor core.

公开(公告)号：US11916447B2

公开(公告)日：2024-02-27

申请号：US17832308

申请日：2022-06-03

申请人： Black & Decker Inc.

发明人： Tong Zheng ,  Yeli Gu ,  Fulong Liu ,  Changxing Lu ,  Abraham Sanchez ,  Shailesh P. Waikar ,  David J. Smith

IPC分类号： H02K1/30 ,  H02K15/03 ,  H02K1/02 ,  H02K1/2733 ,  H02K7/14 ,  H02K29/00

CPC分类号： H02K15/03 ,  H02K1/02 ,  H02K1/2733 ,  H02K1/30 ,  H02K7/145 ,  H02K29/00

摘要： A brushless direct-current (BLDC) motor is provided. The motor includes a stator including a stator core, stator teeth, and windings; a rotor shaft disposed within the stator and extending along a longitudinal axis; and a rotor. The rotor includes a rotor core including an inner body mounted on the rotor shaft and radial projections projecting outwardly from the inner body, a permanent magnet mounted on an outer end of the radial projections, and a mold structure formed in contact with the radial projections and configured to secure the permanent magnet to the rotor core.