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公开(公告)号：US20230022165A1
公开(公告)日：2023-01-26
申请号：US17825753
申请日：2022-05-26
Applicant: Otis Elevator Company
Inventor： Guochen Gao , Yuwei Shen , Xin Xi
Abstract: An electromagnetic device for an elevator brake, an elevator brake and an elevator system. The electromagnetic device is configured to be provided in the number of at least two in the elevator brake, and each of the electromagnetic devices includes: a fixed member, which is fixed relative to an elevator power device and provided with at least one electromagnetic member for providing an electromagnetic force after being energized; a movable member, which is arranged between the fixed member and a friction member of the elevator brake, and arranged to be movable relative to the fixed member; and a force supply member, which is arranged to provide a force in an opposite direction to the electromagnetic force to the movable member.
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公开(公告)号：US20240213823A1
公开(公告)日：2024-06-27
申请号：US18364960
申请日：2023-08-03
Applicant: Otis Elevator Company
Inventor： Fengkun Zhu , Hongliang Wu , Xin Xi , James Leo Hubbard
CPC classification number: H02K1/148 , H02K15/022
Abstract: A motor stator, a method of manufacturing a motor stator and a motor. The motor stator includes: a yoke including a yoke inner circumferential wall surrounding a core hole; a teeth member arranged in the core hole of the yoke and including a plurality of teeth distributed circumferentially, each of the plurality of teeth comprises an outer end, an inner end and a middle part between the outer and inner ends, and coils are wound on the middle parts of the plurality of teeth; the outer ends of at least a part of the plurality of teeth comprise first slots, the yoke inner circumferential wall of the yoke has a plurality of second slots corresponding to positions of the first slots of the plurality of teeth, and a plurality of connecting pieces pass through the corresponding first and second slots, thereby connecting the teeth member to the yoke.
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