Electric fan swing angle adjusting device

Abstract

The invention discloses an electric fan swing angle adjusting device. The device comprises a gear box shell, a speed reducing mechanism composed of a worm, a worm wheel, a worm wheel shaft and a driving gear, an angle changing mechanical device composed of a planetary gear train variable-length crank, a clutch control device composed of a pawl seat, a pawl, a reset spring and a control ratchet wheel, and a magnetic attraction braking device. The device is characterized in that a ratchet wheel with a small addendum circle is concentrically arranged between the driving gear and the pawl seat, the ratchet wheel and the driving gear are integrally produced and formed, and the pawl is buckled and pressed on the ratchet wheel through the reset spring to form a set of clutch device, so that a setof electric fan swing angle adjusting device which meets the requirement of the traditional electric fan swing reduction ratio parameter, and can meet the requirement that the clutch device is compact in size and compatible with a traditional electric fan motor head shell is formed.

Description

technical field [0001] The invention relates to an electric fan swing angle device, in particular to an electric fan swing angle adjustment device. Background technique [0002] In the prior art, there is a control technology based on changing the crank length with the movement of the planetary gear train to realize the swing angle adjustment of the electric fan (such as the invention technology of patent No. To disengage, control the pawl to disengage or withhold the driving gear by controlling the long side of the ratchet wheel, and manipulate the driving gear—the separation and combination of the pawl clutch device, so that the planetary gear and the sun gear have a relative angular displacement, and the length of the crank is changed, so as to achieve control The purpose of fan swing angle change, however, since the driving gear is the main reduction ratio transmission component in the reduction mechanism composed of worm-worm gear-worm shaft-driving gear, it is restrict...

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Problems solved by technology

[0002] In the prior art, there is a control technology based on changing the crank length with the movement of the planetary gear train to realize the swing angle adjustment of the electric fan (such as the invention technology of patent No. To disengage, control the pawl to disengage or withhold the driving gear by controlling the long side of the ratchet wheel, and manipulate the driving gear—the separation and combination of the pawl clutch device, so that the planetary gear and the sun gear have a relative angular displacement, and the length of the crank is changed, so as to achieve control The purpose of fan swing angle change, however, since the driving gear is the main reduction ratio transmission component in the reduction mechanism composed of worm-worm gear-worm shaft-driving gear, it is restricted by the parameters of the reduction ratio of the electric fan's shaking head. When the ratchet function of the clutch device is used, there are often problems of incompatibility with traditional electric fans, conflicts in the reduction ratio of the shaking head, and increase in position and volume space. cost, which needs to be improved

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