Head swinging mechanism of electric appliance

Abstract

The invention relates to a head swinging mechanism of an electric appliance. The head swinging mechanism of the electric appliance comprises a chassis, a rotating disc arranged on the chassis and a driving motor, wherein the upper end of the rotating disc is fixedly connected with an electric appliance body; the chassis is provided with an arc-shaped rack; the driving motor is arranged on the rotating disc; and an output shaft of the driving motor is provided with a gear meshed with the rack. The head swinging mechanism of the electric appliance is characterized in that the rack is of an arc-shaped closed structure formed by connecting outer teeth, inner teeth and an arc transition tooth section; an arc-shaped closed rail is arranged on the chassis around the outer side of the rack in a protruding mode; the gear is arranged in the rail, meshed with the rack and capable of moving along the rail under the action of the driving motor; a sliding rail is fixed to the lower end face of the rotating disc; a sliding block capable of sliding back and forth along the sliding rail is installed on the sliding rail; and the driving motor is installed on the sliding block and can slide on the sliding rail inwards and outwards through the sliding block, so that the gear can be switched between the inner teeth and the outer teeth. The head swinging mechanism of the electric appliance provided by the invention is reasonable in structural design, constant and stable in head swinging speed and capable of swinging within 0 to 350 degrees at the same time, and large-angle head swinging is achieved.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a head swing mechanism, which is used in household appliances such as air purifiers, heaters and fans. Background technique [0002] Most of the existing head swing mechanisms of household appliances use the transmission mode of connecting rod and crank. This structure requires a large torque during transmission, and there are problems with the head swing speed, unstable direction change, and inability to swing the head at a large angle. Defects, and the wear and tear during operation is also relatively serious, which affects the service life of the product. [0003] After investigation, the existing Chinese patent No. CN201220241211.0 "An Oscillating Head Rotating Mechanism and an Electric Heater Adopting the Mechanism", the oscillating head rotating mechanism includes a base, a turntable and a synchronous motor. The disc hole, the turntable is rotatably installed ...

AI Technical Summary

Problems solved by technology

[0005] The above two shaking head mechanisms both adopt the transmission mode of gear and rack. The shaking process is relatively stable and reduces wear and tear, but it still cannot realize large-angle shaking head

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