公开(公告)号：US10199886B2

公开(公告)日：2019-02-05

申请号：US15254379

申请日：2016-09-01

Applicant: Johnson Electric S.A.

Inventor： Yue Li ,  Tao Zhang ,  Chui You Zhou ,  Jie Chai ,  Jun Jie Chu ,  Xiao Bing Zuo ,  Yong Wang ,  Yong Li

IPC: H02K29/03 ,  H02K1/14 ,  H02K1/27 ,  H02K7/14 ,  H02K21/16

Abstract: A single phase brushless motor and a power tool are provided. The single phase brushless motor includes a stator and a rotor. The stator includes a stator core and windings wound around the stator core. The stator core includes a yoke and at least two teeth. The tooth includes a tooth body and a tooth tip. The tooth tip includes first and second pole shoes. The two pole shoes of each tooth are symmetrical about a center line of the tooth body. Each tooth defines a positioning groove facing the rotor between the two pole shoes. Pole shoes of adjacent two of the at least two teeth are spaced apart by a slot opening. A width of the positioning groove is greater than a width of the slot opening. The peak value of the cogging torque of the motor is increased, and the motor has a large startup torque.

公开(公告)号：US09875871B2

公开(公告)日：2018-01-23

申请号：US14751840

申请日：2015-06-26

Applicant: Johnson Electric S.A.

Inventor： Wan Mei He ,  Jun Jie Chu ,  Li Bing Liao

IPC: H01H67/02 ,  H01H50/20 ,  H01H50/42 ,  H01H50/44 ,  F02N11/08 ,  H01H51/06 ,  H01H50/34

CPC classification number: H01H50/20 ,  F02N11/0851 ,  F02N11/0862 ,  F02N11/087 ,  H01H50/34 ,  H01H50/42 ,  H01H50/44 ,  H01H51/065 ,  H01H2235/01

Abstract: A starter for an internal combustion engine includes an electric motor and a solenoid switch. The solenoid switch includes a housing, a fixed core, a movable core, two spaced contacts, and a conductive member arranged to interconnect the contacts when the solenoid is turned on. The movable core is connected to a pinion of the motor which is movable to engage with a flywheel of the engine. The fixed core includes a pull-in coil of aluminum wire, a holding coil of copper wire, and a magnetic core. The motor is connected in series with the pull-in coil. When the solenoid is energized, the coils generate a magnetic field that attracts the movable core to the magnetic core, thereby the moving the pinion into engagement with the flywheel and causing the conductive member to interconnect the contacts.

公开(公告)号：US09797360B2

公开(公告)日：2017-10-24

申请号：US13714958

申请日：2012-12-14

Applicant: Johnson Electric S.A.

Inventor： Jun Ke ,  Po Wah Chan ,  Jun Jie Chu

IPC: F02N11/00 ,  F02N11/14 ,  F02N15/00 ,  F02N15/02 ,  F02N15/04

CPC classification number: F02N11/00 ,  F02N11/14 ,  F02N15/006 ,  F02N15/025 ,  F02N15/043 ,  Y10T74/134

Abstract: A starter has a high voltage direct current electric motor, a speed reduction device, a clutch, an output gear and a switch box configured to turn on the electric motor. The output gear is driven by the electric motor via the speed reduction device and the clutch. The starter also has a stationary axle on which the output gear is installed. The electric motor has an output shaft. The speed reduction device has a drive gear fixed to the output shaft and a driven gear meshed with the drive gear, the driven gear being rotatably mounted to the axle via a bushing.

公开(公告)号：US20160344244A1

公开(公告)日：2016-11-24

申请号：US15160494

申请日：2016-05-20

Applicant: Johnson Electric S.A.

Inventor： Yue Li ,  Chui You Zhou ,  Gang Li ,  Yong Wang ,  Yong Li ,  Wei Zhang ,  Ming Chen ,  Jie Chai ,  Tao Zhang ,  Jun Jie Chu ,  Xiao Bing Zuo

IPC: H02K1/14 ,  E05F15/697 ,  H02K11/33 ,  H02K1/27 ,  H02K7/14

CPC classification number: H02K1/14 ,  E05F15/697 ,  H02K1/146 ,  H02K1/276 ,  H02K7/14 ,  H02K11/33 ,  H02K29/03 ,  H02K2213/03 ,  H02P1/465

Abstract: A single phase brushless motor and an electric apparatus are provided. The motor includes a stator and a rotor. The stator includes a stator core and windings. The stator core includes a yoke and at least two teeth. The tooth includes a tooth body and a tooth tip. The tooth tip includes first and second pole shoes. The rotor is received in a space defined between the first pole shoes and the second pole shoes. Each tooth forms a positioning groove facing the rotor between the first pole shoe and the second pole shoe. The first and second pole shoes are symmetrical about a central line of the tooth body and the positioning groove deviates toward the first pole shoe, such that the rotor startup capability in one direction is greater than the rotor startup capability in an opposite direction. The single phase motor has a larger startup torque with enhanced startup capability.

Abstract translation: 提供单相无刷电动机和电气设备。 电动机包括定子和转子。 定子包括定子铁芯和绕组。 定子芯包括轭和至少两个齿。 牙齿包括牙体和牙齿尖端。 齿尖包括第一和第二极靴。 转子被容纳在第一极靴和第二极靴之间限定的空间中。 每个齿形成面向第一极靴和第二极靴之间的转子的定位槽。 第一和第二极靴关于齿体的中心线对称，并且定位槽朝向第一极靴偏离，使得一个方向上的转子启动能力大于相反方向上的转子启动能力。 单相电机具有较大的起动转矩，启动能力增强。