Door drive with belt-like drive means and elevator installation with such a door drive

摘要

A door drive has a drive unit and a belt-like drive for moving at least one door leaf. At least one electrically conductive element extends in a longitudinal direction of the belt-like drive for transmission of electrical signals or energy to/from the at least one door leaf. A first contact device extends into a longitudinal groove formed in the belt-like drive enabling access to the at least one electrically conductive element. When the belt-like drive is moving past the first contact device, the first contact device produces a permanent contact with the at least one electrically conductive element.