Worm gear train arrangement and housing

US4643040A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Peter Adam · Wuppertal, DE
• Wolfram Knappe · Kitzingen, DE

Key dates

• Filing date: Aug 7, 1985
• Grant date: Feb 17, 1987
• Expiry date: Aug 7, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T403/472
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The object of the invention is to develop an easily fabricated and assembled gear train arrangement, specifically a worm gear arrangement, which requires only a low overall height and at the same time assures operating reliability under extreme temperature ranges for application is motorized vehicle accessory drives such as power window lifts, wherein an output shaft mounted in a gear housing is linked in an elastic, slightly rotating connection to a worm wheel by way of a catch plate fastened to the output shaft, with the worm wheel being driven by a worm gear drive shaft which penetrates into the gear housing. In accordance with this invention the catch plate is designed as a single-piece plastic injection molding mounted onto the output shaft, with a first bearing bushing to mount the output shaft in the gear housing and a second bearing bushing mounted concentrically to the first bearing bushing to mount the worm wheel on the catch plate.