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1. (WO2017020899) BALL SCREW DRIVE

Pub. No.:    WO/2017/020899    International Application No.:    PCT/DE2016/200322
Publication Date: Fri Feb 10 00:59:59 CET 2017 International Filing Date: Fri Jul 15 01:59:59 CEST 2016
IPC: F16H 25/22
Applicants: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Inventors: KREUTZER, Mario
SANEWSKI, Gerd
KLIEMANN, Nadine
Title: BALL SCREW DRIVE
Abstract:
A ball screw drive comprising a leadscrew (2) that has at least one outer ball groove (3) and comprising a threaded nut (4) that has at least one inner ball groove (5), which ball grooves (3, 5) together form a ball channel (6) in which balls (7), via which the leadscrew (2) is guided relative to the threaded nut (4), are accommodated, wherein in the ball groove (5) of the threaded nut (2) is provided at least one radially closed pocket (8) in which a deflection element (9) for deflecting the balls (7) moving in the ball groove (5) is accommodated, wherein the threaded nut (4) has an outer deflection device (20), which outer deflection device is axially in front of the deflection element (9) in the form of an individual deflection element, is situated on the outer side of the threaded nut and engages in two radial openings (22) in the threaded nut (4), and by means of which outer deflection device the balls (7) are axially offset.