US 12,345,315 B2
Planetary roller screw drive
Sebastian Weis, Brücken (DE)
Assigned to Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
Appl. No. 17/765,254
Filed by Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
PCT Filed Oct. 1, 2020, PCT No. PCT/DE2020/100842
§ 371(c)(1), (2) Date Mar. 30, 2022,
PCT Pub. No. WO2021/069022, PCT Pub. Date Apr. 15, 2021.
Claims priority of application No. 102019126875.3 (DE), filed on Oct. 7, 2019.
Prior Publication US 2022/0364633 A1, Nov. 17, 2022
Int. Cl. F16H 37/10 (2006.01); B62D 3/10 (2006.01); B62D 5/04 (2006.01); F16H 25/22 (2006.01); F16H 37/12 (2006.01); F16H 25/20 (2006.01)
CPC F16H 37/124 (2013.01) [B62D 3/10 (2013.01); B62D 5/0424 (2013.01); F16H 25/2252 (2013.01); F16H 2025/2081 (2013.01); F16H 2025/2096 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A planetary roller screw drive, comprising:
a nut arranged on a screw spindle;
planetary rollers having a planetary groove profile arranged between the screw spindle and the nut and which mesh via the planetary groove profile with a nut-side groove profile and, with a thread profile of the screw spindle;
a planetary roller support having pockets, which are arranged distributed over a circumference thereof and in which the planetary rollers are rotatably mounted about respective planetary roller axes thereof; and
a drive sleeve that is rotatably driven about a spindle axis of the screw spindle and which is connected for conjoint rotation with the planetary roller support and is rotatably mounted on a machine part by a bearing;
wherein the bearing comprises an axial angular contact roller bearing arranged coaxially with the drive sleeve and having rollers in rolling contact with angled-bearing raceways that are arranged inclined with respect to a plane arranged transverse to the spindle axis which coincides with a rotation axis of the drive sleeve, and wherein the drive sleeve includes a sleeve and an angled-bearing disc which is arranged in a rotationally fixed manner in the sleeve and which has the inclined angled-bearing raceway.