1, one of the reasons for not shaking your head is that shaking your head is blocked, which is caused by the deformation and bending of the connecting rod. There will be a "squeak" sound. The deformed connecting rod can be removed, and then removed after molding.

2. It is a transmission fault, which prevents the power from being transmitted. Check the toothed bar, swing head plate, gearbox and clutch, etc. , who found off, foreign body stuck, unable to engage after severe wear, etc. , the missing parts should be eliminated or replaced.

Electric fan, also known as fan and electric fan, is a kind of household appliance that uses motor to drive fan blades to rotate to accelerate air circulation. Mainly used for cooling summer heat and circulating air. Widely used in homes, classrooms, offices, shops, hospitals and hotels.

Common household electric fans are essentially axial fans, that is, the direction of the wind is parallel to the rotation axis of the fan blades.