Anti-backbend chain
Assigneeiwis antriebssysteme GmbH & Co. KG
InventorsChristopher Kranz, Orhan Sahin
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Abstract
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.
Claims20
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.
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 stiffening link plates are provided, the respective stiffening link plates being arranged on at least one chain hinge and comprising end face-side support contours so as to stiffen the anti-backbend chain in the second pivot direction.
A chain drive with an anti-backbend chain, the 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;
- a spring element comprising at least a first spring arm, 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
- a stiffening means, which stiffens the anti-backbend chain in a second pivot direction.
Dependencies are inferred from the claim text.