A planetary gear reduction device

Abstract

The invention relates to a planet gear speed reduction device comprising a large pulley, an input shaft and a planet gear speed reducing component, wherein the large pulley drives the input shaft to rotate; the planet gear speed reducing component comprises a gear ring, as well as a sun wheel, a plurality of primary planet gears, a primary planet bracket, a plurality of secondary planet gears and a secondary planet bracket which are made of plastic and are sequentially arranged according to torque transmission sequence; the gear ring is meshed with the interiors of the primary planet gears and the second planet gears; the primary planet bracket is provided with an intermediate junction part meshed with the secondary planet gears; the input shaft drives the sun wheel to rotate; and the secondary planet bracket is provided with an output junction part. By adopting such a structure, the planet gear speed reduction device is compact in structure and less in noise, and can ensure sufficient torque output in a transmission process by virtue of the primary planet gears and the second planet gears.

Description

technical field [0001] The invention relates to a speed reduction device, in particular to a planetary gear speed reduction device used in a paper shredder. Background technique [0002] As a kind of confidential equipment, the paper shredder not only has the function of confidentiality, but also has a certain cleaning ability, and has gradually become an indispensable Baogong equipment in the office. With the continuous development of modern society, paper shredders are not only required to have the function of shredding paper, but also require the ability to crush some hard objects such as CDs. Generally, paper shredders use gear reduction devices to ensure sufficient output. Torque, usually with a large volume, makes a lot of noise during transmission. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned problems in the prior art, and provide a planetary gear reduction device with a compact structure and low noise, ...

AI Technical Summary

Problems solved by technology

With the continuous development of modern society, paper shredders are not only required to have the function of shredding paper, but also require the ability to crush some hard objects such as CDs. Generally, paper shredders use gear reduction devices to ensure sufficient output. Torque, usually larger in size and louder in the transmission process

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