| 摘要 |
The adjustable angle fan comprises of a base with a mounting post to which is mounted a motor housing with an enclosed electric motor. The control for the fan speed is generally located in the base but may alternatively be positioned on the mounting post. The fan is affixed to one end of the electric motor axle. A fan cage is mounted to the motor housing and encloses the fan blades. A reduction gear box is affixed to the other end of the electric motor axle. The reduction gear box conveys the torque from the electric motor at a reduced rotational speed to a vertical axle extending generally below the electric motor. The adjustable mechanism is mounted at or near the bottom end of the vertical axle. The adjustable mechanism comprises of a movable pin that can be positioned at various locations to vary its distance from the vertical axle. A pivoting arm connects the movable pin to a fixed post on the base near the motor housing mounting post. The oscillating angle of the fan is varied depending on the distance of the movable pin from the vertical axle. The end user only needs to adjust the movable pin's location to adjust the oscillating angle of the fan.
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