Spindle nut for a ball screw

US9347536B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Mario Kreutzer · Sonneberg, DE
• Gerd Sanewski · Erlangen, DE

Key dates

• Filing date: Apr 15, 2013
• Grant date: May 24, 2016
• Expiry date: Jun 14, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/19767
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A spindle nut for a ball screw with a nut part on whose inner periphery there is a spiral ball groove that winds around a spindle axis for the rolling of balls and with two deflection elements, the balls are deflectable into the curved deflection channel of each deflection element and the nut part has two recesses that are spaced apart from each other in the axial direction and one of the deflection elements is arranged in each recess. The nut part is provided with a straight return channel for the balls, and the straight return channel is connected to the two deflection channels. The balls are movable along a ball track in the curved deflection channel and in the straight return channel, and the straight return channel is arranged within a wall thickness of the spindle nut and is arranged at an angle relative to the spindle axis.