Patent ID: 6056664
Filing Date: 2000-05-02
Classification: F16D,F16H

Abstract:
A differential gear having an input-side rotating body rotating on the axis by an external driving force, a pair of output-side rotating bodies arranged coaxially with the input-side rotating body, and a differential transmission mechanism for transmitting a rotational force of the input-side rotating body to each of the output-side rotating bodies while allowing the difference in rotation between the output-side rotating bodies, comprising:a plurality of rollers which are arranged between a raceway surface integrally rotating with the input-side rotating body and a raceway surface integrally rotating with the output-side rotating body, and roll while contacting with the raceway surfaces when a difference in rotation occurs between the output-side rotating bodies; anda roller holder for rotatably holding the rollers at intervals in the peripheral direction of the raceway surfaces, wherein:the axes of rolling of the rollers are tilted so as to make an angle smaller than 20.degree. with respect to the axis of rotation of the input-side and output-side rotating bodies, and are tilted so as to make an angle larger than 25.degree. and smaller than 90.degree. with respect to a plane including the axis of rotation of the input-side and output-side rotating bodies.