Siemens Aktiengesellschaft

Franz Rappl

Helmut Schedele

Martin Aidn

A relay with a moveable contact element which is actuated through armature movement transmitted via a slide is switched by the application of torsional forces to the movable contact element. The torsional forces are generated by the slide pushing the leaf spring contact element eccentrically in the region of one edge so that twisting of the contact element occurs during the switching event. A lower spring modulus for a spring of predetermined thickness and dimensions result so that a smaller magnetic system and a smaller overall relay is achieved given matching of the spring force curve to the magnetic system force curve.

Electromagnetic power relay with actuation slide

A spring electrical contact assembly having an elongated spring member with a contact adjacent a free end, the member mounted at an inner end in a slot opening in an insulated mounting body. The contact is urged by its spring force against a fixed contact carried by a stiff member mounted in the body. The inner end of the spring is fixed to a rigid spring carrier plate seated in the slot, the plate extending parallel to the elongation of the spring and having an edge at a right angle thereto intermediate the spring ends. The edge functions as a fulcrum point for the spring.

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Feldkirchen Westerham, Germany

Franz Rappl