Power drive for electric switchgear in which driving power is elastically transmitted thereto

US4468977A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Gerd Kummerow · Berlin, DE
• Werner Troebel · Berlin, DE
• Bernhard Preuss · Berlin, DE
• Reinhard Zeuke · Berlin, DE

Key dates

• Filing date: Apr 13, 1981
• Grant date: Sep 4, 1984
• Expiry date: Apr 13, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/18968
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

Disclosed is a power drive for electric switchgear in which the driving force is elastically transmitted to an actuating member, for example, a handle. Thereby, tolerance compensation is provided to allow the drive motor to run into the end positions of the drive. A bending-type spring is disclosed as an elastic power transmitting member which is arranged transversely to the direction of motion of a slide which transmits the driving force to the switchgear. The bending-type spring can be connected to the slide. The bending-type spring can be a leaf spring, and more particularly two parallel leaf springs. In the disclosed embodiments, the two parallel leaf springs are provided as a single U-shaped leaf spring having parallel legs. The U-shaped leaf spring can either be supported at both ends thereof in the slide or the legs can be fastened in a mounting body connected to the slide.