Gearbox for adjustment devices, especially in motor vehicles

US8555742B2 · kind B2 · utility

Assignee

• IMS GEAR GMBH · DE

Inventors

• Stefan Hoch · Titisee, DE
• Stéphane Birker · Donaueschingen, DE
• Michael Woehrle · Niedereschach, DE

Key dates

• Filing date: Sep 1, 2006
• Grant date: Oct 15, 2013
• Expiry date: Aug 21, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/19953
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention involves a gearbox, especially for adjustment devices in motor vehicles, with a plastic worm drive. The invention provides that the worm drive has an encircling, circular flat contact surface perpendicular to the worm axle and a number of removal pockets in the form of recesses that are interposed axially between contact surface and the worm axle and at the same time arranged in a level recessed to the level of contact surface, whereby an encircling bevel is formed in the transition area from level of removal pockets to the level of the circular contact surface.