Coaxially arranged reduction gear assembly

摘要

A reduction gear assembly integrates a stationary section having a stationary internal gear configuration, an output section having an output internal gear configuration, an input shaft and planetary carrier comprising an input shaft having a shaft rotational axis and a planetary gear cam having a planetary gear rotational axis, wherein the shaft axis and cam axis are offset. A planetary gear comprising a planet wheel first stage and a planet wheel second stage is rotationally assembled to the planetary gear cam. The first stage planet wheel engages with the stationary gear. The second stage planet wheel engages with the output gear. Rotation of the input shaft rotates the planetary gear about a circular path. Engagement between the first stage and the stationary gear rotates the planetary gear. Second stage teeth engage with the output gear. Difference in first stage and second stage teeth counts causes rotation of the output section.

主权项

1. A coaxially arranged reduction gear assembly, comprising:
a stationary gear section having a quantity of stationary gear teeth disposed in a spatial arrangement about an interior circumferential surface forming a stationary gear having an internal gear configuration, wherein said stationary gear section is retained in a fixed position; a input shaft and planetary carrier combination comprising an input shaft having a central shaft rotational axis and a planetary gear cam having a planetary gear rotational axis, wherein said planetary gear rotational axis and central shaft rotational axis offset from one another by a planetary gear rotational offset; a planetary gear comprising a planet wheel gear first stage having a quantity of planet wheel gear first stage teeth disposed in a spatial arrangement about a peripheral surface forming a first stage gear having an external gear configuration and a planet wheel gear second stage having a quantity of planet wheel gear second stage teeth disposed in a spatial arrangement about a peripheral surface forming a second stage gear having an external gear configuration, wherein said planet wheel gear first stage and said planet wheel gear second stage are concentric with one another and said first stage quantity of teeth differs from said second stage quantity of teeth; and an output rotational gear section having a quantity of output rotational gear teeth disposed in a spatial arrangement about an interior circumferential surface forming an output rotational gear having an internal gear configuration; wherein said planetary gear is rotationally assembled to said planetary gear cam forming a planetary gear subassembly; the first stage external gear is positioned in engagement with said internal stationary gear and the second stage external gear is positioned in engagement with said output rotational gear.