Electromagnetic changeover relay

U.S. Patent Number: 5382934

Abstract: A relay having two coils which are arranged axially flush on a base body (1), wherein each coil has a winding (23, 33) and a core (14, 15) connected by means of a U-shaped yoke (12). A single armature (13) is supported on a center section of the yoke (12) such that it can be changed over between the inner ends of the two cores (14, 15). In addition, two contact springs (7, 8) are arranged between the two cores, on both sides of the same, parallel to the armature. The contact-making ends of the two contact springs rest on a common center contact element (61) in the quiescent state. Depending on which winding (23 or 33) is energized, a corresponding contact spring (7 or 8 respectively) is lifted off the center, contact element (61) and moved into contact with an outer contact element (51 or 52 respectively). The relay is advantageously suited as a pole-reversal relay for driving DC motors having a changing rotation direction (e.g., as found in motor vehicles).

Inventors: Hendel; Horst (Berlin, DE), Kern; Josef (Berlin, DE), Kleine-Onnebrink; Bernhard (Berlin, DE)

Assignee: Siemens Aktiengesellschaft (Munich, DE)

Application Number: 08/178,282

Issued: 1995-01-17

Expired: 2007-01-17

Classes: 335/159 ; 335/256; 335/78

Field of search: 335/159,160,161,78-86,128,124,131,202,256

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