The front end of the electric fan motor is provided with a support rod for fixing. After the rod is installed, there is a screw hole in the shell, which needs to be reinforced with screws to prevent up and down vibration and displacement. When the screw in this hole is not screwed, there is no fan blade, so the vibration and resistance of the motor are small, and it will not bounce up and feel its vibration. However, after the fan blades are installed, the running resistance of the motor will be strengthened, and the nose will vibrate accordingly. Because the fixing screw is not firm, the nose will go up. However, due to the tension of the rocker, it will return to its original position at a certain position, so it will continue to vibrate greatly.
Therefore, in order to solve this problem, it is necessary to fix the screws of the nose support rod to make the nose stable, and even if the resistance is strengthened, it will not vibrate greatly up and down.