Bowden cables just as wire ropes serve as transmission for pulling force
over a non-straight running route. Unlike the wire ropes the routing is
realized not with rolls or treads but can be done in a free routing using the conduit.
The conduit is a pressure-stable, flexible component used as end support for
the force induced over the rope. A Bowden cable was described for the first
time in the patent from the Briton Ernest Monnington Bowden.
Conduits are commonly made up of a metal spiral with a plastic coating and optional fixed or inserted internal tube. The spiral can be made of flat or round wire. The internal tube serves to improve the friction and the fatigue strength of the Bowden cable.
Bowden cables have the characteristic, that the length of the free end of the rope can change (the piece of the rope that looks out of the covering).
Factors for that are among other things:
Therefore, the length of the rope in the fitting position and under operating load must be determined, however, be defined for the production and the quality control in the stretched state on the drawing.