Anti-backbend chain

摘要

An anti-backbend chain comprises a plurality of alternate chain links joined by respective chain hinges, a spring element comprising at least a first spring arm being provided. The spring element rests on a chain hinge and the first spring arm extends to a neighbouring chain hinge and is movably in contact therewith under the biasing force of the spring element, so as to obstruct bending of the anti-backbend chain in a first pivot direction. In addition, an anti-backbend chain drive is provided, in particular a chain drive for driving automated door or gate systems.

主权项

1. An anti-backbend chain comprising a plurality of alternate chain links having chain link plates, wherein the chain link plates of neighbouring chain links are joined by respective chain hinges;
wherein a spring element comprising at least a first spring arm is provided, the spring element obstruct bending of the anti-backbend chain in a first pivot direction, wherein the spring element encircles a chain hinge, the first spring arm extending from a first vertical side of the chain hinge to the first vertical side of a neighbouring chain hinge and is movably in contact therewith under the biasing force of the spring element; and wherein a stiffening means is provided, which stiffens the anti-backbend chain in a second pivot direction, and that, for defining the stiffening means, chain link plates of neighbouring chain links include support portions for stiffening the anti-backbend chain in the second pivot direction.