Planetary gear

US6814684B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Horst Schulz · Friedrichshafen, DE
• Tino Kirschner · Friedrichshafen, DE

Key dates

• Filing date: Jun 9, 2003
• Grant date: Nov 9, 2004
• Expiry date: Jun 9, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2361/61
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Proposed is a planetary drive, having a rotationally driven sun gear (2) disposed coaxially to principal drive axis (4), with a an internal gear (14) affixed within housing (12B) and possessing a rotatably supported planet carrier (22), about which a plurality of circumferentially apportioned planet gears (16) are rotatably seated, which are in complementary tooth engagement with the sun gear (2) and with the internal gear (14), whereby the planet carrier (22) forms the output drive and in common with an output side output drive shaft (24) is supported within the housing by an axially installed inclined bearing pair, comprised of a first inclined bearing (26) and a second inclined bearing (28). Further proposed is that at least the first inclined bearing (26) is affixed with its inner ring (30) in the housing (12A) and the outer ring (32) of the bearing is to rotate with the planet carrier (22) and having its pressure lines (34) forming a pressure cone, the apex (36) of which points away from the second inclined bearing (28).