GUIDING RAIL SECTION WITH A TROLLEY FOR A DOOR ACTUATOR

摘要

1. A guiding rail (1) having a trolley (19), which is guided for displacement in the longitudinal direction of the rail by a guiding formation (18), as a connecting transmission mamber between a motorized door actuator and a single or multi-part door leaf, characterised in that part of the guiding rail (1) which engages round the guiding formation (18) of the trolley (19) is constructed in the form of a hollow section portion (5) which comprises a wall closed upon itself round a cavity (6), seen transversely to the rail longitudinal direction.