Johnson Electric S.a.

Wei Xing Mao

Fan Ouyang

Xiao Liang Yue

Bin Li

Xian Tang

A gear motor assembly includes a motor and a gearbox connected together. The motor includes a stator and a rotor. The stator has a housing, magnets attached to the housing, and brushes. The rotor includes a shaft with a rotor core, a commutator, a sleeve, a bushing and a worm mounted thereon. The bushing is slidably located between the commutator and worm. The sleeve is located between the commutator and the bushing. The rotor is balanced with the worm fix to the shaft. The gearbox includes a casing having an opening, and a worm gear received in the casing. The brushes of the motor are mounted in the casing. The shaft has a first end that extends into the gearbox. The bushing is fixed in the casing via a bushing seat.

Gear motor assembly

A gear motor assembly includes a gearbox, a motor mounted to the gearbox, a first damper and a second damper. The gearbox includes a gearing casing and a worm gear installed in the gear casing. The motor includes a stator and a rotor. The stator includes a housing. The rotor includes a motor shaft and a worm integrally rotating with the shaft. The shaft extends into the gear housing and the worm is meshed with the worm gear. The first damper is sandwiched between the gear casing and a first end of the shaft, eliminating end play between the shaft and the gear casing. The second damper is sandwiched between the motor housing and a second end of the shaft, eliminating end play between the shaft and the motor housing.

A gear motor assembly includes a gearbox and a motor mounted to the gearbox. The gearbox includes a gear casing and a worm gear installed in the gear casing. The motor includes a stator, a rotor and brush gear. The rotor includes an shaft, a rotor core and a commutator fixed to the shaft. A worm integrally rotates with the shaft and is meshed with the worm gear. The brush gear includes multiple brushes slidably contacting the commutator, and multiple springs urging the corresponding brush towards the commutator. A lengthwise axis of the brush is inclined to a rotational axis of the commutator with a first angle between 75&#xb0; to 87&#xb0;.

Gear motor assembly and brush motor thereof

A motor drive device comprises a motor, a gearbox mounted to the motor and a control module. The gearbox comprises a gearbox housing that has an opening facing the motor. The motor has a shaft that extends into the gearbox housing through the opening to drive a worm gear of the gearbox. The control module has a PCB mounted to the gearbox and most of the PCB is accommodated in the opening of the gearbox housing. The PCB extends in a plane substantially parallel to the shaft.

Growing community of inventors

Rochester Hills, MI, United States of America

Wei Xing Mao