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Auxiliary switch for an electromagnetic switching device

  • US 5,206,617 A
  • Filed: 12/19/1991
  • Issued: 04/27/1993
  • Est. Priority Date: 06/11/1988
  • Status: Expired due to Term
First Claim
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1. Auxiliary switch for an electromagnetic switching device with a drive, said switch comprising, in a multipartite housing equipped with fixed contacts, a contact bridge support secured in its position by means of a pressure spring and movable against the spring force upon energization/nonenergization of the drive of the switching device, said contact bridge support being provided with bridge contacts, characterized in that two pressure springs each with an axis located outside of an axis of movement of the contact bridge support are supported in the manner of a two-armed toggle joint respectively with one end in, respectively, one of blind holes formed on mutually opposite sides of the contact bridge support and with the other end in, respectively, one of recesses provided in housing sections, and exhibit a negative return spring characteristic against the tensile force of the drive.

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