公开(公告)号：US10450797B2

公开(公告)日：2019-10-22

申请号：US15590720

申请日：2017-05-09

申请人： Johnson Electric S.A.

发明人： Yue Li ,  Chui You Zhou ,  Wei Zhang ,  Yong Gang Zhang ,  Ming Chen ,  Yong Wang

IPC分类号： E06B9/68 ,  E06B9/82 ,  H02K7/116 ,  H02K21/14 ,  H02K7/102 ,  E06B9/80

摘要： A rolling shutter driving device includes a motor, a locking assembly and a gearbox. The motor includes a stator and a rotor. The rotor includes a rotary shaft connected to the gearbox. The rotary shaft drives through the gearbox a rolling shutter to extend or retract. The locking assembly includes a brake pad slidingly fitted on the rotary shaft and a rotary member fixedly mounted to the rotary shaft. The brake pad is circumferentially fixed relative to the stator. The brake pad is slidable relative to the rotary shaft so as to be selectively engaged with the rotary member to lock the rotary shaft and hence hold the load in position, or disengaged from the rotary member to unlock the rotary shaft.

公开(公告)号：US09972879B2

公开(公告)日：2018-05-15

申请号：US14830354

申请日：2015-08-19

申请人： Johnson Electric S.A.

发明人： Yong Gang Zhang ,  Hong Wei Zhang ,  Jian Zhao

IPC分类号： H01P3/08 ,  H01P1/203

CPC分类号： H01P1/203 ,  H01P1/20363 ,  H01P1/20381

摘要： A microwave filter includes a strip transmission line and a filtering assembly connected to the strip transmission line. The transmission line has an input terminal and an output terminal. The filtering assembly includes a strip first primary branch connected directly to a first connection point of the transmission line. The first primary branch includes a first body portion and a first bent portion at a first end of the first body portion, where the first bent portion is connected directly to the first connection point, and the first body portion is substantially parallel to a body portion of the transmission line. With the microwave filter incorporated in an electric motor, the impedance curve of the transmission line can be matched with a high-frequency EMI curve, and therefore the filtering effect is enhanced, EMI is suppressed and the EMC level improved.

公开(公告)号：US10566855B2

公开(公告)日：2020-02-18

申请号：US15611157

申请日：2017-06-01

申请人： Johnson Electric S.A.

发明人： Yue Li ,  James Ching Sik Lau ,  Chui You Zhou ,  Gang Li ,  Xiao Ning Zhu ,  Ya Ming Zhang ,  Yong Gang Zhang

IPC分类号： H02K1/17 ,  H02K1/24 ,  H02K3/18 ,  H02K13/10 ,  H02K23/62

摘要： A PMDC motor includes a housing, a stator magnet fixed to the inner circumferential surface of the housing, a rotor core received in the housing and facing the stator magnet, and rotor windings wound around the rotor core. The rotor core includes a plurality of rotor teeth, each of the rotor teeth including a tooth body and a tooth tip. A ratio of the outer diameter of the rotor core to an outer diameter of the housing is in the range of 0.6 to 0.67. Compared to the existing PMDC motor, the PMDC motor of the present invention can satisfy the same performance requirement, while reducing the size and weight of the rotor core and hence the weight of the rotor windings. In this way, the total weight and hence the moment of inertia of the rotor is reduced, thereby effectively reducing the noise generated during operation of the motor.