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Over-center crosslink hinge

  • US 4,251,900 A
  • Filed: 11/13/1978
  • Issued: 02/24/1981
  • Est. Priority Date: 12/17/1977
  • Status: Expired due to Term
First Claim
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1. A crosslink over-center hinge movable from an open to a closed position and vice versa and having a supporting wall member and a door member, a crosslink mechanism joining said two members together and comprising first and second linkage arms, pivot shaft means coupling said linkage arms pivotingly together in their middle area, one end of one of said linkage arms being journaled on the supporting wall member and one end of the other linkage arm being journaled on the door member, the other ends of said linkage arms being respectively coupled to the door member and the supporting wall member for guidance on a curve in space, an over-center mechanism having a closing spring, said mechanism resiliently urging the hinge to the hinge end position at least in the vicinity of the closed position of said hinge, a link coupled to the door by a pivot shaft means and connecting the door member to said first linkage arm and being so formed that its middle area is situated, when the hinge is in the closed position, in the vicinity of said pivot shaft means pivotingly coupling said linkage arms;

  • said over-center mechanism being disposed at said link and having an elongated over-center element pivotingly mounted on said pivot shaft means of said link in said door member, said element having a locking surface engaging said pivot shaft means in range of the hinge-closed position, said over-center element being biased by said closing spring supported in the area of the other end of said link towards an engagement of said locking surface with said pivot shaft means.

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