Johnson Electric S.a.

Johnson Electric International Ag

Wen Liang Li

Ji Dong Chai

Bao Ting Liu

Yue Li

Kwong Yip Poon

Zhi Duan Shao

Tao Zhang

James Ching Sik Lau

Chui You Zhou

Jie Chai

Qiang Zhou

Lin Ping Gui

Wan You Wang

An electric motor for a blower and the like has a commutator and a brush assembly for making electrical contact with the commutator. The brush assembly includes a brush holder and a brush slidably mounted to the brush holder. The brush holder includes a brush holder plate and a side portion extending from the brush holder plate. The brush is arc-shaped and includes a first surface contacting the brush holder plate and a second surface contacting the side portion of the brush holder. The side portion of the brush holder has a number of ribs contacting the second surface of the brush.

Electric motor

A fluid generating device and an electric apparatus utilizing the fluid generating device are provided. The fluid generating device includes a motor and an impeller driven by the motor. The motor is a single phase direct current brushless motor which includes a stator and a rotor. The stator includes a stator core and a stator winding. The stator core includes an outer ring portion, teeth extending inwardly from the outer ring portion, a pole shoe formed at the tooth. Slot openings are formed between the pole shoes. The rotor is received in a receiving chamber defined by the pole shoes. Inner surfaces of the pole shoes and the rotor form therebetween a substantially even air gap. The presence of even air gap can reduce the cogging torque of the motor, thus reducing the startup current and noise of the motor.

Fluid generating device and electric apparatus using the same

A universal motor has a stator and a rotor. The stator has stator core and a stator winding. The stator core has a yoke with two ends and two equivalent salient poles formed at the ends of the yoke respectively. The stator winding is wound on the yoke.

A stator for an electric motor has a laminated stator coreformed from a plurality of stacked laminations, and a stator winding formed from a plurality of coilswound on bobbins. The stator corehas a plurality of teethwhich extend radially and alternately spaced between and connected to circumferentially extending yokes. The yokes and the teeth are separately formed with each yokebeing a stack of yoke laminationsand each toothbeing a stack of tooth laminations. The teethare inserted through the bobbinsand arranged in a cylindrical form with each toothextending radially. Yokesare then fixed between radially outer endsof adjacent teeth to complete the radially outer portion of the stator core. Each toothhas a radial location surfacewhich contacts an inner surface of the adjacent yokes. The yokesand teethare fixed together by welding the yokesto the outer endsof the teeth

Stator for an electric motor

An electric motor has a stator and a rotor. The stator has a housing with inlets and outlets. The rotor has a shaft, a rotor core and a commutator. A fan is fixed to the rotor. An end cap is fitted to the housing to close a first end of the housing and support electrical components, including brush gear. The brush gear includes two brush assemblies, each comprising a brush for making sliding electrical contact with the commutator and a brush guidance mechanism for resiliently urging the brush into contact with the commutator. The brush assemblies are accommodated in compartments of the end cap. Each compartment has vents on an axially facing side thereof and openings in a transverse wall thereof. An air guide guides a part of the airflow generated by the fan exiting from at least one of the outlets of the housing to flow into the compartments via the openings and exit the compartments via the vents to cool the brushes.

A servo motor, comprising a stator and a rotor disposed within the stator. The rotor has a core and magnets, covering the periphery of the core, forming a plurality of axially extending rotor poles. The rotor poles comprise a plurality of the magnets arranged axially, and the centers of adjacent magnets of a rotor pole are staggered by a mechanical angle in the circumferential direction of the rotor.

Growing community of inventors

Shenzhen, China

Wen Liang Li