Two-stage speed-reduced mechanisms by eccentric design

Abstract

A two-stage speed reduced mechanism is created by designing two eccentric cams on its rotating shaft. The motions are transmitted by two driving wheels for obtaining the function of two stages speed reduction. This mechanism has the properties of large speed-reduced scales and high torque outputs including compact structure. The mechanism is designed including at least one ring set, one rotating shaft, two driving wheels, one transmission disk and one frame. The driving wheels are driven by two eccentric cams designed on the rotating shaft. The driving wheels have outer teeth which are meshing with the inner teeth of the ring set and the transmission disk. The differential rotations of the two driving wheels are created by the tooth number differences of the paired meshing transmissions. The differential rotations are connected by the transmitted pins to obtain the functions of two-stage speed reduction. This invention has the characteristics of compact structure, high reduction ratio and large torque output. It can achieve better space configuration and reduce manufacturing costs, and is conducive in implementation and application for the machines which the structural space is limited.

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