Structure and automatic blocking mechanism for awnings

Structure and automatic blocking mechanism for awnings comprising two guide profiles (1) disposed parallel to each other for a carriage (2), wherein one of the cross edges of the awning fabric (3) is attached at the carriage (2), wherein the awning fabric can be wound up on a winding shaft driven by a motor at a higher disposed region of the structure and comprising a blocking mechanism, wherein the blocking mechanism operates between the carriage (2) and the guide profiles (1), characterized in that the outer edge (1c) of the lower flange (1a) projecting from the tubular profile body (1b) of the guide profile (1), form simultaneously the running profile or for the track rollers (5) of the carriage (2) and a completely free channel for water flown possibly over the side edge of the awning fabric (3), wherein one or two flanges project vertically downwardly below the guide profile, wherein the one or two flanges serve for the attachment of supports and/or of side wall is, wherein the outer running edge (1c) can exhibit a seat (1e, 1d) for the insertion of a running profile and wherein the automatic blocking mechanism comprises a catch (6) with a longitudinal sliding slot (6f) and with two cross sliding slots (6g, 6h) communicating with the longitudinal sliding slot (6f), wherein a bearing bolt (6e) engages into the cross sliding slot (6g, 6h), wherein the bearing bolt (6e) is attached at the carriage possibly adjustable, at least one limit stop element (8) attached at the guide profile and adjustable (8a) relative to distance and inclination relative to the running line of the ratchet, and a limit stop element (4d) possibly adjustable, disposed above the bearing bolt (6e) and connected to the carriage.