Adjustment mechanism and procedure for its operation

摘要

The invention relates to an adjusting mechanism (1) which has a push chain drive which has at least one flexible strand belt (3) with strand members (4) attached, the strand belt (3) via a drive (5) in an adjusting direction (S) of the The adjusting mechanism (1) can be retracted and extended as a rack and pinion (7), characterized by one, several or all of the following features a), b), c): 4), which are combined with one another in the headstock (7) in that the string links (4) interlock positively, b) the part (31) of the at least one strand belt (3) not located in the headstock (7) is twisted by at least 30 degrees guided, c) the push chain drive has an arbitrarily actuatable stabilization mechanism (6, 9), by means of which adjacent string links (4) located in the headstock (7) can be pressed against one another, to increase the rigidity of the headstock (7).