Patent ID: 7694600
Filing Date: 2010-04-13
Classification: F16H,Y10T

Abstract:
1. A ball screw, having a spindle nut provided on a recirculating ball screw and on an inner circumference of which turns of ball grooves, helically wound around an axis, are provided in which balls roll, at least one return element, arranged on an outer circumference of the spindle nut and provided with a return duct for the balls, at two ends of said return element connecting a start of a turn to an end of a turn to permit a continuous recirculation of the balls, wherein the ends of the return duct engage in bores provided on the spindle nut, to join the return duet to the ball groove, and wherein the return element between two ends being supported on a support, wherein the return element is resiliently supported in radial direction by means of at least one spring element on the support, wherein a spring travel (s) of the spring for movements between the support and the return element, is limited by stops provided on the return element and on the support wherein the return element is resiliently formed on at least one spring point facing the support and this spring point is sprung against the support and wherein the return element has an external contour matched to an internal contour of the support, the return element being provided at a distance from the external contour with at least one recess, in such a way that the recess and the external contour define a resilient web forming the spring element.