Patent ID: 6499951
Filing Date: 2002-12-31
Classification: F04D

Abstract:
A fan head swinging device comprising a speed reducer composed of a first, a second, a third, a fourth and a fifth gear, said first, second, third, fourth and fifth gear respectively having a coaxial small gear, each said gear meshing with the coaxial small gear of the abutting of each said gear, a DC motor fixed behind the housing of said speed reducer and having a spindle, said spindle provided with a coaxial small gear meshing with said first gear of said speed reducer, high rotating speed of said DC motor lowered by said speed reducer, the shaft of said fifth gear of said speed reducer actuated to rotate with the slowest speed, said fan head actuated by said shaft of said fifth gear to swing right and left at a moderate speed, the swinging speed of said fan head possible to be controlled to an angle set by a user because the rotating direction of said DC motor can be easily controlled.