Electrically-driven three-stage planetary speed reduction driver

Abstract

The invention discloses an electrically-driven three-stage planetary speed reduction driver which comprises a driving motor, a planetary speed reduction mechanism, a power output shaft and a motor output flange, and a first-stage sun gear is installed on the power shaft of the driving motor; the first-stage sun gear is connected with the planetary speed reducing mechanism; the planetary speed reduction mechanism comprises a first-stage planetary speed reduction unit, a second-stage planetary speed reduction unit and a third-stage planetary speed reduction unit and further comprises an angle detection device used for detecting the rotation angle of the power output shaft. On the basis that original speed reduction and power output are guaranteed, the three stages of speed reduction units can be independently assembled, then the driver is integrally assembled, the assembling efficiency is improved, each stage of planetary speed reduction unit can be independently replaced and debugged, and the qualified rate of products is greatly increased; each stage of speed reduction unit adopts an independent assembly structure, and the positions of all parts are kept relatively stable, so that abnormal sound caused by assembly error accumulation in the prior art is avoided, and internal resistance generated by axial movement of each stage of speed reduction unit is reduced.

Description

technical field [0001] The invention belongs to a transmission device, and in particular relates to an electric drive three-stage planetary deceleration driver which is suitable for smart home and drives automatic flipping of cover-type smart home products. Background technique [0002] With the development of the economy and the improvement of people's living standards, people's requirements for sanitary appliances and even household appliances are getting higher and higher, and intelligent and automated products are becoming more and more popular in today's market. Therefore, the intelligent automation of smart toilets, smart dishwashers, dishwashers, and washing machines is also getting higher and higher. The automatic flip function is one of the smart toilets, smart dishwashers, smart dishwashers, and smart washing machines. One of the manifestations. [0003] There are a lot of electric drive flip buffers with drive covers on the market today, also called "electric dri...

AI Technical Summary

Problems solved by technology

However, most of the automatic flip gearboxes on the market have high friction between the motor, the reduction gearbox and its rotating shaft, the transmission ratio is high, the noise is loud, and the gears are easily damaged, resulting in a relatively low overall life of the gearbox (less than 10,000 times of opening and closing). , the failure rate of the product is high, and at the same time, the volume of the existing electric drive flip buffer is relatively large, and the installation takes up a large space

[0004] For this reason, the applicant has developed a smart home electric drive flip buffer with small size, large output torque, compact structure, low friction, low noise, stable operation, long service life, and quick opening and slow falling functions. For details, see, CN108980288A; however, the assembly efficiency of this kind of electric drive clamshell buffer is low in actual assembly, and there is still room for optimization in the overall structure, so as to further reduce frictional resistance, ensure relatively stable transmission parts, reduce noise, and prolong service life

[0005] Specifically, the prior art (CN108980288A) uses a three-stage planetary deceleration mechanism for electric drive flip buffers; when assembling, it is necessary to place each transmission member (each stage of planetary gear, planetary carrier) in a certain order with the three-stage planetary deceleration mechanism Assembling one by one, the efficiency is low; moreover, there are no restrictions and constraints in the axial direction between the reduction units of each stage, which makes it difficult to determine the relative position of the transmission components during the assembly process, and is prone to jamming or abnormal noise; in addition, the existing technology Independent gaskets are used to reduce the friction between adjacent ones, but the independent gasket structure has no fixed constraints, and it is impossible to realize the independent overall assembly of each planetary reduction unit. When assembling, the transmission components of the three-stage planetary reduction mechanism are assembled one by one. , and the relative position of the transmission parts should not be determined, it needs to be assembled and debugged repeatedly, the assembly efficiency is low, and there are often installation errors. The existence of installation errors will directly affect the stability of the operation, which will lead to the problem of unstable operation and high noise of the reduction mechanism.

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