Wave type headshaking mechanism as well as electric fan and heater using same

Abstract

A wave type headshaking mechanism comprises a machine head, a stand for carrying the machine head, a first headshaking mechanism which leftwards and rightwards drives the machine head to shake head and a second headshaking mechanism which drives the machine head up and down, and the first headshaking mechanism and the second headshaking mechanism are arranged in the machine head and are connected with the stand. The wave type headshaking mechanism also comprises a rotating shaft, and the upper end of the rotating shaft is articulated with the machine head through a pin shaft in order to enable the machine head to swing up and down along the shaft line of the pin shaft under the driving of the second headshaking mechanism. The shaft body of the rotating shaft is connected with the stand through a block bearing in order to enable the machine head to swing leftwards and rightwards along the shaft line of the pin shaft under the driving of the first headshaking mechanism. The invention also provides an electric fan or a heater which uses the wave type headshaking device. A simple device is used by the invention to realize the left and right head shaking and the up and down head shaking of the machine head, and the winding area of the electric fan and the heating area of the heater are enlarged. The invention has the advantages of high transmission efficiency, convenient repair and low cost.

Description

technical field [0001] The invention relates to an oscillating mechanism used in electric fans and heaters, in particular to a wave-type oscillating mechanism. The invention also relates to an electric fan and a heater using the wave-type oscillating mechanism. Background technique [0002] The electric fans and heaters sold on the existing market generally only do a single left-right shaking action, which can be combined with manual adjustment of the head pitch to adjust the pitch angle of the head to change the wind area, but the pitch angle of the head is often fixed during normal operation. However, it only relies on the left and right swing of the machine head itself to send air or heat, so the wind receiving area is limited. [0003] There are now combined three-dimensional air-supply electric fans on the market. There are two ways to realize this type of electric fan. One is driven by two powers to drive the left and right swing heads and up and down swing heads of t...

AI Technical Summary

Problems solved by technology

Although this structure realizes three-dimensional wide-area air supply, the use of synchronous motors increases the number of power sources, complicates the circuit, and accidental overloading can also cause damage to the synchronous motor, greatly reducing the reliability and life of the electric fan. Therefore, the market's approval rate for this type of electric fan is low, and it has not been popularized.

[0004] The second type is single power drive, which is directly driven by the main motor through a single gear box to realize up and down and left and right shaking. Secondary time, the transmission distance of the power transmission mechanism is generally the center distance and must be periodically changed, and the traditional mature mechanism cannot be directly used

However, because the up and down swing of this mechanism is realized by the bending of the shrapnel, the shrapnel is prone to fatigue fracture during frequent bending and straightening, and the reliability is poor.

Therefore, the performance and quality of this kind of flexible parts directly affect the reliability and life of the whole mechanism. It is difficult to choose an ideal flexible part under the existing technical conditions, which restricts the mass production and sales of electric fans using this mechanism.

[0005] The vertical electric fan oscillating device disclosed in Chinese patent ZL92203795.7 also shows a single power to complete the up and down compound oscillating mechanism, the motor shaft is lengthened at the rear of the motor, and a clutch type oscillating control mechanism is horizontally installed between the original horizontal oscillating device , the oscillating head plate, the connecting rod and the Y-shaped bracket constitute a crank-link mechanism. The shaft of the Y-shaped bracket is inserted into the angle plate seat, and the two holes on the upper part of the Y-shaped bracket are hinged to the shaft of the motor housing. Although this mechanism realizes the composite shaking head, but The addition of a clutch device and a two-day linkage link complicates the movement transmission, making it difficult to achieve linkage and difficult for practical application.

[0008] Through analysis, the applicant believes that the wave-type oscillating mechanism of the combined three-dimensional air supply fan generally has a complicated installation structure between the machine head and the machine base, and there are many mechanism parts for driving the machine head to realize the wave-like oscillating head, so the cost of the entire fan is high. , not suitable for consumers to choose

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