Vehicle motor

Abstract

The invention provides a vehicle motor. The vehicle motor comprises a stator assembly used for providing a magnetic field for a motor, a rotor assembly used for converting electric energy into mechanical energy and transmitting the mechanical energy to a planetary gear, a brush holder assembly used for providing a bridge for current to enter and exit from the rotor assembly, a driving cover assembly adopted as an interface between the motor and an engine, a speed reducing mechanism assembly used for converting mechanical energy generated by an armature and transmitting converted energy to the flywheel of the engine, an electromagnetic switch used for converting electric energy into mechanical energy, and a rear cover assembly used for supporting the armature and pressing the brush holder assembly, wherein the stator assembly is provided with a rotor supporting structure. According to the vehicle motor of the invention adopted, the stability of the rotor running in the motor can be improved, and electromagnetic noises can be reduced, and the commutation performance of an electric brush can be improved, and the service life of the vehicle motor can be prolonged.

Description

technical field [0001] The invention relates to an automobile motor, in particular to an automobile motor with a rotor supporting structure arranged on a starter stator. Background technique [0002] In response to the national low-carbon and environmental protection policy, many automobile manufacturers have introduced a new "automatic engine start-stop technology". When you step on the brake pedal, stop and remove the gear (manual gear), the start-stop system detects that the engine is running without load, the gearbox is in neutral, the vehicle speed is zero, and the battery is fully charged. These information will be sent to the engine computer to meet these conditions. After that, it will send a command to shut down the engine. When the vehicle is ready to start, you only need to step on the clutch pedal, and the motor will immediately pull the engine to ignite. Through this automatic start-stop technology, unnecessary idling time is reduced, and fast and precise star...

AI Technical Summary

Problems solved by technology

[0004] figure 1 It shows the prior art planetary reduction starter, in which the driving end PT3 of the rotor assembly PT1 is supported by the central bushing PT4 of the output shaft, so the reliability of the reduction mechanism not only directly affects the service life of the starter, but also Affects whether the rotor rotates smoothly

Once the center bushing PT4 of the row output shaft is worn, or the inner ring gear bracket bushing PT2 is worn, the air gap between the rotor and the stator magnetic tile will be uneven, resulting in abnormal noise and increased brush commutation sparks and a series of questions

These problems will seriously affect the service life of the car motor, which is very unfavorable for cars using automatic start-stop technology

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