The construction of rapid opening thermally insulated roller doors is challenging in that there are both structural and operational challenges. The door blades need to have structural strength, and also need to have dimensional stability. Disclosed is a thermally insulated roller door blade in which at least the material forming the outer surface is able to resist the tensile loads during retraction, and the blade is provided with flexible spacer strips that help the primary insulating material of the door blade to maintain dimensional stability, primarily by helping to resist crushing. This allows softer materials to be used for thermal insulation than previously used, helping to reduce weight and to improve thermal efficiency, while at the same time allowing smooth and repeatable operation even when exposed to freezing temperatures for long periods.

The present invention discloses a roller shutter for an automobile, comprising guide slots, a roller shutter, a lock catch assembly locked with the guide slots, a rolling and unrolling assembly, a plurality of groups of pre-positioning installation assemblies and locking assemblies. Compared with the prior art, the roller shutter for an automobile enables the two guide slots to keep parallel through the pre-positioning installation assemblies and the positioning and locking assemblies during the assembling of the roller shutter. Because the switching process of the roller shutter is smoother at the connection between the roller shutter and the guide slots, more labor is saved. A guide turntable enables the roller shutter to slide through frictional force with the slots of the roller shutter, rolling and unrolling become smooth. The lock catch assembly can lock and position the roller shutter at any time, flexibility is strong and freedom is high.

The invention relates to a roller shutter for opening and closing a doorway (12) having a door blade (11), the door blade (11) comprises several rigid shutter elements (13) which are hinged with each other, the shutter elements (13) are guided by side rails (18) at opposed sides of the doorway (12), wherein each shutter element (13) provides an end piece (19) at each horizontally spaced end of the shutter element (13) for spacing layers of rolled up shutter elements (13) apart from each other, each end piece (19) has at least one concave section (27) for coiling the end pieces (19) on a coiling device (14) and/or in layers on top of each other. For reducing the risk of weakening a connection between the end piece (19) and the shutter element (13), for reducing noise and/or vibrations during the opening and/or closing of the door way and/or to increase the stability of the roller shutter the roller shutter (10) is characterized in that at least some of the end pieces (19) having at least one plane gliding section (28), the plane gliding section (28) is arranged for interacting with a slide guide (36) of the side rail (18) for leading the end pieces (19) into and/or out of the side rails (18).

The invention relates to a roller shutter for opening and closing a doorway (12) having a door blade (11), the door blade (11) comprises several rigid shutter elements (13) which are hinged with each other, the shutter elements (13) are guided by side rails (18) at opposed sides of the doorway (12), wherein each shutter element (13) provides an end piece (19) at each horizontally spaced end of the shutter element (13) for spacing layers of rolled up shutter elements (13) apart from each other, each end piece (19) has at least one concave section (27) for coiling the end pieces (19) on a coiling device (14) and/or in layers on top of each other. For reducing the risk of weakening a connection between the end piece (19) and the shutter element (13), for reducing noise and/or vibrations during the opening and/or closing of the door way and/or to increase the stability of the roller shutter the roller shutter (10) is characterized in that at least some of the end pieces (19) having at least one plane gliding section (28), the plane gliding section (28) is arranged for interacting with a slide guide (36) of the side rail (18) for leading the end pieces (19) into and/or out of the side rails (18).