small or micro motor

Abstract

The invention relates to a small or miniature motor and a wave shape elastic gasket thereof. The small or miniature motor comprises a rotor component, a front end cover, a rear end cover, a front bearing, a rear bearing and a stator component installed between the front and rear end covers; a rotary shaft of the rotor component is rotatably arranged on the front and rear end covers through the front and rear bearings, and the front end of the rotary shaft penetrates a central through hole of the front end cover; the small or miniature motor further comprises the wave shape elastic gasket used for positioning, vibration absorbing and preventing the rotor iron core of the rotor component from loosening and shifting; the wave shape elastic gasket comprises a wave-shaped jagged narrow-edge ring and a central through hole formed by the narrow-edge ring; the wave shape elastic gasket is arranged between the rear end cover and the stator iron core, the narrow-edge ring of the wave shape elastic gasket is squeezed between the end surface of the rear end cover and the end surface of the stator iron core. The motor has the advantages of high safety and reasonable structure.

Description

[0001] 【Technical field】 [0002] The present invention relates to a motor, especially a small or micro motor, and also relates to a wave elastic washer for a small or micro motor. [0003] 【Background technique】 [0004] Small or micro motors play a very important role in various fields, and their reliability is especially concerned and valued by people. The fixing of the stator iron core of the prior art small or micro-motor to the shell includes fixing with bolts and hot and cold pressing; if using bolts to fix, the stator iron core must have a bolt through hole, so that the motor needs to increase the yoke of the stator iron core. The size of the outer shell should also be designed to fix the bolt holes for the stator core, and the size of the shell should be increased accordingly, which will increase the volume of the motor; if it is hot and cold press-fitted, the interference between the stator core and the shell will not be large. It is easy to loosen after the shell is...

AI Technical Summary

Problems solved by technology

The fixing of the stator iron core of the prior art small-sized or micro-motor to the shell includes fixing with bolts and hot and cold pressing; if adopting bolts to fix, the stator iron core must open a bolt through hole, like this, the motor needs to increase the yoke of the stator iron core The size of the outer shell should also be designed to fix the bolt holes for the stator core, and the size of the shell should be increased accordingly, which will increase the volume of the motor; if the cold and hot pressing is installed, the interference between the stator core and the shell is not large. It is easy to loosen after the shell is heated. In fact, the outer surface of the stator core and the inner surface of the shell are false interference of high point contact, especially when the small or micro motor is running at high speed for a long time, the temperature is high, and the shell Expansion, the position of the stator core changes during torsion and vibration, which reduces the reliability of the motor and poses a safety hazard to the entire motor

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