Homokinetic transmission joint
AssigneeGlaenzer Spicer
InventorMichel Orain
Life of this patent
Estimating the term…
Abstract
The joint allows high operational speeds and large operating angles while remaining homokinetic. The joint comprises a bell integral with the driving shaft and defining raceways for rollers carried by trunnions. Two sets of rollers and trunnions are provided and associated respectively with two concentric shaft sections which are connected to the driven shaft and are capable of undergoing elastic torsional deformation so as to take up the phase difference between the two sets of rollers and trunnions.
Claims28
A homokinetic transmission joint comprising a first element for connection to one of two shafts to be interconnected, a second element for connection to the other of said two shafts, the first element defining n pairs of raceways, n being an even whole number equal to at least 4, the pairs of raceways being disposed symmetrically 2 by 2 with respect to the axis of rotation of the first element and being angularly evenly spaced apart in a plane perpendicular to said axis, said second element comprising n/2 concentric shaft sections, each shaft section having a capacity to undergo an elastic deformation in torsion, each of said n/2 shaft sections carrying two trunnions, and rollers which are respectively rotatably mounted on the trunnions and are in contact with the respective pairs of raceways, whereby when the joint rotates at an angle the difference in phase between the pairs of rollers is absorbed by the torsion of the concentric shaft sections.
An assembly comprising two homokinetic joints, each joint comprising a first element and a second element, the first element defining n pairs of raceways, n being an even whole number equal to at least 4, the pairs of raceways being disposed symmetrically 2 by 2 with respect to the axis of rotation of the first element and being angularly evenly spaced apart in a plane perpendicular to said axis, said second element comprising n/2 concentric shaft sections, each shaft section having a capacity to undergo an elastic deformation in torsion, each of said n/2 shaft sections carrying two trunnions, and rollers which are respectively rotatably mounted on the trunnions and are in contact with the respective pairs of raceways, whereby when the joint rotates at an angle, the difference in phase between the pairs of rollers is absorbed by the torsion of the concentric shaft sections;
- the two joints being interconnected by the concentric shaft sections which are free to rotate with respect to each other in a region thereof between said two joints;
- a tube extending on at least a part of the length of said region around an outer shaft section of said shaft sections;
- and spacer members disposed between said outer shaft section and the tube.
Dependencies are inferred from the claim text.