Transmission shaft, transmission, and motor vehicle drivetrain

US11359715B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Christoph Margraf · Markdorf, DE
• Carl Schilling · Weingarten, DE
• Martin Brehmer · Tettnang, DE
• Oliver Angele · Weingarten, DE
• Manuel Steinmann · Gersheim, DE
• Sebastian Freis · Etzling, FR
• Stefan Benz-Breitweg · Wolfegg, DE
• Robert Reiser · Hilliard, US
• Christian Staiger · Immenstaad am Bodensee, DE
• Felix Fink · Friedrichshafen, DE
• Tamas Gyarmati · Bermatingen, DE

Key dates

• Filing date: Feb 20, 2020
• Grant date: Jun 14, 2022
• Expiry date: Jul 11, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2200/2046
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A shaft (W) for a motor vehicle transmission (G) may have axial bore holes positioned within the shaft and configured to guide fluid within the shaft. The shaft may have first, second, and third axial sections (W1, W2, W3), the second axial section being axially between the first and third axial sections. Fluid enters the axial bore holes in the second axial section and exits the axial bore holes in the first and third axial sections. One of the axial bore holes (B2; B1, B1a) is arranged, at least partially, in the first axial section and is radially spaced from an axis of rotation (WA) of the shaft. Another of the axial bore holes (B1RS; B_SE5, B3a) is arranged, at least partially, in the third axial section. The one of the axial bore holes (B2; B1, B1a) is coaxial with the other of the axial bore holes (B1RS; B_SE5, B3a).