US 9,809,245 B2
Bearing for a ball screw drive
Gergely László, Esslingen-Berkheim (DE)
Assigned to THYSSENKRUPP PRESTA AG, Eschen (LI)
Appl. No. 15/308,156
Filed by ThyssenKrupp Presta AG, Eschen (LI); and ThyssenKrupp AG, Essen (DE)
PCT Filed May 4, 2015, PCT No. PCT/EP2015/059696
§ 371(c)(1), (2) Date Nov. 1, 2016,
PCT Pub. No. WO2015/169735, PCT Pub. Date Nov. 12, 2015.
Claims priority of application No. 10 2014 006 469 (DE), filed on May 6, 2014.
Prior Publication US 2017/0072993 A1, Mar. 16, 2017
Int. Cl. B62D 5/04 (2006.01); F16H 25/22 (2006.01); F16H 25/24 (2006.01); F16C 23/08 (2006.01); F16H 25/20 (2006.01)
CPC B62D 5/0448 (2013.01) [B62D 5/0424 (2013.01); F16C 23/084 (2013.01); F16H 25/2204 (2013.01); F16H 25/24 (2013.01); F16C 23/082 (2013.01); F16C 2326/24 (2013.01); F16H 2025/2081 (2013.01); F16H 2025/2096 (2013.01); F16H 2025/2445 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A bearing for a ball screw drive comprising:
a ball nut that is rotatable about a longitudinal axis and configured to receive a threaded spindle in a concentric manner;
an inner ring in which the ball nut is disposed, wherein an outer circumferential surface of the inner ring is convex at least in some regions, wherein the inner ring is connected to and rotatable with the ball nut and is immovable in an axial direction;
an intermediate ring in which the ball nut is at least partially disposed, wherein an inner circumferential surface of the intermediate ring is concave at least in some regions, wherein the intermediate ring is connected to the inner ring via spring elements for rotation with the inner ring;
an outer ring in which the ball nut is at least partially disposed; and
a belt pulley connected to and rotatable with the intermediate ring, wherein the ball nut is tiltable with respect to the belt pulley.