ASSEMBLY SYSTEM FOR ASSEMBLING PHOTOVOLTAIC MODULES ON ROOFS, COMPRISING ASSEMBLY SYSTEM COMPONENTS WHICH ARE CONNECTED BY LATCHING CONNECTIONS

The invention relates to an assembly system for assembling photovoltaic modules (1) on roofs, in particular flat roofs, comprising base rails (4), which are to be arranged directly on the roof or on a protective mat (3) placed on the roof and which are made of profiled sections with hollow chambers, and support elements (5, 6, 8), which can be assembled on the base rails and to which the photovoltaic modules and/or other photovoltaic system components (9) can be attached, said support elements being connectable to the base rails at least partly via latching connections. The aforementioned assembly system is characterized in that - the base rails have a tongue (43), which is formed by notches (42) in the upper face, at least partly on the upper face of the base rails, the free end of said tongue being elastically pressable into the base rail, - a support element (6, 8), which is designed to be connected to such a base rail via a latching connection resulting from the interaction with the elastic tongue, has a hook-shaped protrusion (61) protruding from the support element lower face facing the base rail, said protrusion comprising a vertical limb (611), which extends downwards perpendicularly from the support element, and a horizontal limb (612), which adjoins the vertical limb and runs in the longitudinal direction of the base rail, and - the base rail and the support element are additionally designed such that the tongue can be pressed elastically into the base rail by the hook-shaped protrusion and springs back after a subsequent movement of the support element into its intended position relative to the base rail.