DE4003359A1 - Wide roller shutter with laminated leaf - has mechanism sliding winding shaft along support bracket arm in dependence on winding thickness - Google Patents

Abstract

The roller shutter has a laminated curtain or armoured portion, wound on and off an overhead shaft. The latter is slid by a mechanism along the arm of a support bracket, dependent on the thickness of the coil on it. A first drive wheel (4), driven by the shaft (3), drives a final one (7) if desired by a transmission mechanism (5,6). A fixed slide surface extends along the arm, and a rotary component, driven by the final wheel, travels along it as the shaft turns in the unwinding direction towards the side, from which the door unwinds. The component has a fixed pin towards the wall, engaging in the working position a clamp open to one side.

Description

The invention relates to a roller shutter curtain with the features of the preamble of the claim 1.

It is known instead of so-called Panel roll-up door curtain, where in the direction of movement successive panels are hinged together, To provide so-called roller shutter curtains, which from a continuous and accordingly flexible film exist to be rolled up into a wrap. Such curtains can also often be found on high-speed doors, since they are relatively light and work quietly.

A disadvantage of such curtains is that the required bendability to form the roll also towards others on the broad side of the curtain acting forces is given, so in particular a warping under bending forces, which leads to that the film with its laterally guided edges coming out of these guides is acted upon. Such curtains therefore require a simple design in usually a guide in their in the direction of movement trending side edges in the curtain plane is effective to the emergence of the edges under a to prevent the film from warping due to wind.

Such simple curtains, for example from a  Plastic film can be very easily translucent or be clearly transparent, they are however with regard to thermal insulation and burglar resistance the conventional panel roller shutter leaves inferior.

The invention has for its object a curtain to create of the type mentioned, the energy-saving Bendability in the direction of curvature of the guide is designed to be wind-resistant and in particular a heat-insulating, sound-absorbing and / or burglar-resistant Training with either transparent or light reflecting design allowed.

Based on a curtain with the characteristics of the generic term of claim 1, this object is the invention through its characteristic features solved.

Due to the structure of the curtain according to the invention in Direction of its thickness seen in several layers the basic requirement is first created, form the curtain so that it is in the Direction of winding or guide curvature is relatively easily bendable while in one perpendicular to the broad side of the curtain acting force is stiff. Furthermore with the multi-layer structure, and / or sound-insulating layers or Provide cavity inclusions, furthermore it is possible, in the course of the multi-layer structure burglar-resistant reinforcement, for example a wire mesh to provide.

In a particularly preferred embodiment, the different  The curtain can be bent from its wide area created by having one on the outside space the outer layer adjacent to the opening to be closed an inner layer adjacent to the interior is kept spaced by an intermediate layer, one seen in the direction of movement of the curtain relatively easy to turn and in the curtain plane seen perpendicular to it, a relative has high transverse stability. Basically, this could can be achieved by placing in this intermediate layer perpendicular to the direction of curtain movement and cross bars running between the side edge guides inserted, for example from a light metal profile. You can use these rods in the direction of movement of the curtain connect the seen straps or ropes, so that you also have a burglar-resistant reinforcement of the curtain reached. In addition, in the Intermediate layer or a parallel one another intermediate layer a highly porous material consistency, for example plastic foam used be due to the porosity or air pockets thermal and acoustic insulation allowed. In another version, in which there is more, for example, a translucency arrives, the intermediate layer can translucent material consist of itself seen wavy or in the direction of curtain movement is meandering and at their Elevations seen to the outside and in Opposite direction of the ceiling Wells with the adjacent areas of the Outer layer and the inner layer is connected. Here can be a weld, a bond or act like that. It is also conceivable that Intermediate layer to form that one between  the opposite surfaces of the outer layer and the inner layer arranges or forms webs, which extend perpendicular to the direction of curtain movement and spaced in that direction are arranged sequentially. Also in this one Execution achieves the aforementioned Cross stability with simultaneous, in Direction of curtain movement seen existing Flexibility.

In the last described embodiment, between the outer layer and the inner layer formed voids, with air or - with particularly good heat or Cold insulation - with a particularly tight Gas, for example hexafluoride, are filled. The Cavities can be self-contained be, or be connected. It it is also conceivable, for example the cavities to be open at the front and to enable that in the course of winding up the distance between the outer layer and the inner layer itself is designed to reduce, d. H. an intermediate layer to form in such a thickness change allows elastic. The outer one is in the winding Layer stretchable and / or accordingly internal layer designed to be compressible.

Instead of translucency, which in different Selectable degrees up to transparency such a curtain can of course also be opaque or only partially transparent design so that you can create a replica of windows reached. In further preferred training can a heat transfer through radiation  encounter that at least one of the areas of the Layers, especially the outer layer, trains reflective. You can do that determine the reflected waveband, for example in such a way that above all ultraviolet and / or turns off infrared wavelengths, but one allows certain light to enter. Such reflective Properties can be determined, for example, by a Achieve non-ferrous metal coating.

Plastics in particular come here as materials into consideration, for example polyvinyl chloride films. The choice of plastic is also based on the measured occurring temperature differences, the be significant in cooled rooms to be locked can.

The above explanations indicate that depending on the size of the insulation and / or the Burglar protection different blind designs are necessary, in such a way that in a case is possible, the thickness of the curtain in Reduce train formation, then especially the thermal insulation of the curtain on designs that can be reduced in curtain thickness is limited, while especially particularly insulating Door curtains, especially in training with in closed, gas-filled rooms, hardly in the course of winding up practically not or but are not significantly compressible. This has consequences for the space requirement of the winding opened door leaf and in particular also regarding the introduction of the curtain running off the winding in the side door leaf guides.  

It is basically known to be roughly horizontal protruding from the lintel of the door opening to be closed Console rails supported with their winding shaft Dependent along these console rails to shift from the diameter of the wrap, which gives a good introduction to the unwinding Blinds in the door leaf guides on the side reached the gate opening to be closed. This procedure is particularly necessary for such curtains, those in the open state of the gate are proportionate form large wraps, so - once comparable Assuming door opening heights - accordingly thick are trained. The control of the two movements the rolling up and down of the curtain on the one hand and that of the displacement position of the winding shaft of the fall of the gate opening to be closed away or towards them are synchronized accordingly. A particularly preferred embodiment for such a device for moving the axis the winding shaft of a roller shutter is shown below still presented. Such devices are subject to however, a certain danger in the event that a defect in the control gear of this device - for example by a broken gear - occurs which is the synchronization between the reeling movement of the door leaf and the displacement of the winding shaft interrupts from the fall. When blocked the displacement movement of the shaft and at the same time further winding movement of the curtain is with increasing winding diameter a clamping between Winding shaft and fall through the growing winding take place, which makes the operation of the gate violent is disturbed and there is a risk that the curtain by attacking the fall in the ramp area of the Wickels tears, so that the protruding into the gate opening  supported section is supported. This will also be discussed in more detail below.

With a more flexible formation of the curtain, in particular such that the diameter of the winding when the curtain is completely rolled up towards the person not when the curtain is completely unwound (closed position) is too large, as is the case with such thermally insulated curtains of the above Kind of is the case where the outer layer and the inner layer when it comes onto the roll by appropriate deformation of the intermediate layer Noticeably bring webs or the like closer together, a shift dependent on the winding thickness is required the winding shaft not if you use other means ensures that the curtain in the area of Process well managed by the winding and thus friction and low wear in the side door leaf guides is introduced. One is particularly suitable for this roll-shaped support device with a tubular Coating that is extensive, for example continuously, on at least the inside of the curtain leading attacks. It can also be a act partially jacket-cylindrical support surface, the tubular coating can in particular from a Textile, such as fabric, felt or the like, like this in connection with the following exemplary embodiments will be explained later.

Thus it is different for the above Curtain properties each have an adapted roll-up device given leadership. For the latter In the case of support or guidance of a more flexible or curtain thinning as it rolls up can also be an inside and an outside  Support device provided so that the curtain between two on the support surfaces of the support devices along sliding tubular structures is targeted. In the case of rolling up thinning Hanging is the one seen from the front view Blind with a correspondingly small change in angle between the inlet and outlet zone and the inlet into the contact subjected to the tubular structure, with relatively thick layers of the a rolled up curtain is created accordingly major change in angle, with appropriate suppleness or flexibility of the curtain perpendicular to its broad sides from such a support device or a pair of these can also be mastered is.

Preferred embodiments of the invention result from the dependent claims, in particular in connection with the embodiments shown in the drawing. It shows

Fig. 1 is a schematic internal perspective view of a roll-up door in the installed condition for the purpose of overall view of such a gate,

Fig. 2 is a perspective view of the upper left Inneneckbereiches in a first view of a first embodiment,

Fig. 3 is a view of Fig. 2 from a different angle,

Fig. 4 is a perspective view of the left lateral region of a profile Behang- cappings,

Fig. 5 is a schematic end view of a portion of an embodiment of a thermally insulated and burglar-resistant curtain formed,

Fig. 6 is a schematic cross section through the end of a winding shaft and the device for displacing its axis along approximately horizontal struts of the support brackets supporting the shaft for receiving a winding of a curtain that generates correspondingly thick winding layers, in particular not or only slightly in the course of the winding is compressible,

Fig. 7 is a section VII-VII of FIG. 6,

Fig. 8 shows a mounting portion of a Anrollkonsolen device according to FIGS. 6 and 7 with a releasable mount,

Fig. 9 is a side plan view of the fall-front side reproduced in section holder according to Fig. 8.

The door leaf consists of a curtain 1 which is wound up and unwound onto a winding roller 2 . In FIGS. 1 to 4, the function is given of such a roll-up door, wherein the formation of the curtain no consideration is taken. However, the curtain is one whose thickness is comparatively small in the winding state or which has only a small bending resistance in the case of a thicker configuration. Coaxial to both end faces of the winding roller 2 , conical cable drums 4 are arranged on the same supporting shaft 3 , which are smaller in diameter than the winding roller 2 or the winding 11 of the curtain 1 arranged thereon: the radius between the axis of rotation of the shaft 3 and the run-up and run-off area of a traction cable 5 which can be wound and unwound on the cable drum 4 in a spiral groove is half the radius between the axis of rotation and the run-up and run-off area of the curtain 1 on the curtain roll 11 of the winding roller 2 . This halving is achieved in that the pull rope 5 coming from the respective rope drum 4 is fixed to the bearing thimble 12 of a loose roller 7 , around which a tension rope 8 runs, one end of which on the respective side region of the lower edge or end profile rail 13 of the curtain 1 is fixed, then runs around a fixed roller 8 , which is held stationary in the lower bottom region of the door frame 9 , is guided around it around the loose roller 7 and connects with the other end to the one end of a helical tension spring 10 , the other end of which in turn is in the bottom region the frame is anchored. Due to the pulley system from loose roller 7 and fixed roller 8 , the above-mentioned diameter ratio of 1: 2 results. The coil tension spring could also be switched on between the loose roller and the pull rope 5 , but would then have to take up twice the load.

The roller shutter shown has no weight compensation spring. Such is often provided inside the winding roller 2 , which complicates maintenance. There are other solutions with external counterbalance springs. In principle, the gate according to the invention can also be provided with such a weight compensation spring device. Here, however, the mass of the curtain, ie the weight of the door leaf, is presupposed to be relatively low, so that a weight balance appears to be unnecessary. Weight differences between the rolled and the rolled curtain, which act as torque on the axis of the winding roller, are - like the acceleration forces - absorbed by the drive, in particular designed as an electric motor, which is common to the winding roller 2 and the conical rope drums 4 Wave 3 attacks.

While the curtain 1 rolls up and down on the curtain winding 11 on the side facing the lintel of the building opening to be closed, this is reversed with regard to the pull cable 5 . The taper of the cable drum 4 is chosen so that when the curtain 1 rolls into the door leaf closed position and thus the curtain winding 11 decreasing in diameter, the traction cable 5 is wound up, but in the direction of a decreasing diameter in accordance with the decreasing curtain winding diameter. The acting on the tension cable 6 coil spring 10 is therefore not exposed to any change in length due to the curtain movement itself, so it remains during operation so far in the same more or less pretensioned working position, in which the curtain is kept so tight that it warps free in its lateral guides running. The spring is therefore initially only used to compensate for differences in dimensions, such as those that can occur in particular as a result of temperature changes.

The two conical cable drums 4 are fixed on the drive shaft 3 with the aid of the ratchet wheel and pawl, the ratchet wheel being rotatably mounted on the shaft 3 and the pawl on an end face of the respective conical cable drum 4 . The pawl works in the engagement direction so that in the course of a rotary movement of the cable drum 4 around the shaft 3 and against the latching direction of the pawl, the pull cable 5 is wound onto the cable drum. In this way, the pulling rope 5 can be wound onto the rope drum 4 against the force of the coil tension spring 10 arranged in the lower frame area via the pulley 7, 8 . If the pull cable 5 has the desired tension, this relative rotary movement between the shaft 3 and the cable drum 4 is ended , so that the spring-loaded pawl engages in the ratchet wheel 4 with a corresponding backward rotation from the helical tension spring 10 and transmitted via the pull cable 5 to the conical cable drum 4 . In this position, the cable drum 4 is rotatably connected to the axis of rotation 3 with respect to the prevailing direction of pull.

In the present case, the conical rope drum has the following special feature, which is particularly, if not exclusively, important in connection with the thin, low-weight curtains of roller doors in question: Shortly before the door leaf comes into the closed position, i.e. about a distance , which corresponds to the length of a winding, in the present example about 70 cm, the traction cable 5 arrives at the point with the smallest drum diameter in the pursuit of the spiral cable receiving groove of the drum. The rope is thus wound in the course of the closing process of the curtain from one end, for example, seen from the outside of the curtain, with a large diameter of the cable drum in a position with a decreasing diameter, following the guidance of the correspondingly shaped groove in the axial direction of the roll. Over the last unwinding of the curtain 1 into the closed position, the traction cable 5 is wound onto a partial area of the cable drum 4 , which increases again with regard to the drum diameter in the course of the winding process and also continues the guide groove in this area. However, the increase in the cable drum diameter when the curtain 1 is moved into the closed position means that the cable tries to shorten and thus exerts an increasing load on the helical tension spring 10 . As a result, a corresponding tensile force is applied to the curtain 1 , so that in the closed position it is stretched taut between the ropes and the winding roller 2 , such that the curtain, despite the thin design, warps only slightly under strong wind loads.

The rope drum corresponding to the above tension conditions thus has a double-conical shape, with the position  of the smallest diameter off-center between the drum end faces each with an increased diameter. Such a rope drum shape is not only important for very thin curtains, it can be used for a special tensile load on a roller shutter door can be used in the closed position.

A special setting of the blind 1 at the winding roller 2 is not required because the curtain is unwound only up to about one and a quarter turns of the winding roller. 2 It is therefore sufficient to fix the end of the curtain 1 near the roll on the winding roller surface at a corresponding point, for example by gluing. For normal operation, the remaining wrap angle of the curtain on the roller is large enough to ensure a non-slip attack between the curtain and the roller, even when viewed from the closed position of the curtain.

The thin curtain in question is wound around a roller, the drive shaft 3 of which is rigidly mounted with respect to its spatial position or spacing from the lintel of the opening to be closed. There is therefore no positively controlled displacement movement of the drive shaft 3 depending on the winding condition of the winding roller 2 , as can be provided in the case of thick winding layers or slat gate leaves, in order to be able to introduce the running curtain from the curtain winding into the lateral guides as smoothly and as freely as possible.

In the present case, the curtain 1 is steered into a closing plane or its lateral guides with the aid of a support roller 14 , the special structure of which is described below:

The support roller 14 is provided with a hose-like structure 15 , in particular a textile, such as fabric, felt or the like, which is pushed onto the outer surface of a tubular fixed support 16 and is rotatably held thereon about the latter. The hose-like structure 15 can extend over the entire width of the curtain or can be designed and arranged in several parts limited to partial width regions of the curtain. The curtain attacks on the outer surface of this tubular sliding textile or the like. The hose or the structure is taken along by the movement of the curtain and set in rotation with respect to the carrier. In this case, measures to achieve particularly good sliding properties can be taken between the tubular structure and the carrier; this can be achieved by appropriate material pairing or also by arranging a correspondingly low-friction intermediate layer.

Such a support or guide roller 14 can be provided between the lintel and the curtain 1 , but it can also act on the surface of the curtain 1 facing away from the interior of the room or can additionally be arranged in this direction, so that a pair of such guide rollers or hose-like structure lead the curtain 1 between them. The guiding properties of such a support roller 14 are so good that even large deflections of the curtain course seen in the direction of movement can be mastered effortlessly and with little friction and thus wear.

The carrier 16 for receiving the tubular structure 15 is fixed and accordingly has only a partial area on which the textile structure must be supported. The cross-sectional dimension of the carrier can accordingly be limited to such a curved wing area. So it does not have to be a tube, a support with a C-shaped cross section or a similar design can also be used. The radius of curvature of the wing area is primarily determined by the deformability of the curtain. The tubular structure is more flexible than the curtain, so it can go through greater curvatures, so that you can work with correspondingly narrower "support rollers", the carrier is significantly narrower than twice the diameter of the radius of curvature and the hose guided on the wing in the down and Run-up area of the wing passes through a narrower bend than this.

A special feature of this support roller 14 with the rotating hose is that the moving mass is very small because the hose only has to have a small wall thickness and is the only part of this support device that rotates. There are no bearing, balancing and, in this respect, abrasion problems which would be comparable to those of rolling bodies which are rotatably mounted about relatively thin axes.

Guiding problems of the hose in relation to the carrier are relatively minor. So much for the tendency of an axial Emigration between the hose and the carrier can be done counter by various measures, for example by radial flange formations of the carrier projecting over the wing, against which the axially moving hose runs, preferably axially thickened in this starting area, for example by turning over of the hose on self-formed hose edges, arranging a disc with good sliding properties axially between the approaching end of the hose and the neighboring one Support flange and the like. Such a radially protruding one Flange can be formed, for example, by a so-called collar bush be, which has a cylindrical part on which the hose is pushed on and provided with a radially protruding part is, which forms the actual frontal contact or sliding surface. Furthermore, you can in the wing area or consistently form spherical or such a crown imitate that there are some webs on the carrier to the axial center provides trained with increasing diameter and the like more. The measure to be taken largely depends on the consistency of the hose material; a stiff hose can guide itself while in the axial direction to bulge or compress inclined hose in the end area, if necessary, seperately must be (collar bushing).  

In this configuration of the support roller 14 , moisture problems can be compensated for by appropriate surface treatment of the carrier, by plastic coatings or the like.

As stated at the beginning, the traction cables must be wound onto the conical cable drums 4 following the course of the groove. Especially when the flanges 7, 8 and tension spring 10 housed in the frame side area are accommodated in a cover 17 and / or if there is a corresponding run-up distance due to the arrangement of a support roller 14 below the winding roller 2 or the cable drums 4 or it may be necessary to arrange a rope pulley below the support roller in each side area of the frame, which takes over the guidance of the pull rope 5 from the longitudinal course parallel to the side frame to the groove guide on the associated conical rope drum 4 , accordingly both with regard to the rope deflection around the shaft 3 and also distributing in the axial direction of the shaft in order to distribute the rope to the rope drum provided with a corresponding helical groove with corresponding axial displacement.

The fastening of the traction cable or the drum-side traction cable end to the cable drum can be carried out in a simple manner from an assembly point of view, similar to that described in connection with the holding of the curtain on the winding roller 2 . If you make sure that one turn of the pull rope remains on the rope drum, the friction is sufficient to hold the rope on the drum without any special definition. For example, you can simply put the end of the rope through a radially directed hole in the beginning of the spiral groove, which makes assembly very easy.

If one does not provide for fixing the end of the pull rope on the drum in the course of the receiving groove for the rope, but instead provides the last section for the holder in a corresponding recess on the end face of the rope drum designed as a cast body, which is adjacent to this groove start area, the axial dimension of the rope drum 4 can be seen keep it smaller accordingly. The result for this last groove section, which no longer goes into the guide course of the groove, is a course in the manner of an Archimedean spiral.

It is easy to understand that such a bracket between the pull rope and the rope drum also in another connection use as in the above-described roller shutter structure with thin curtains can, also with sectional gates, the bottom edge of the door with ropes is held, which run up and down on rope drums.

Above all, it is emphasized that the support body described above not for use with thin-walled curtains on roller shutters is limited, but can generally lead to roller shutter leaves especially those made from a thicker and / or stiffer, in particular there are multilayer curtains. The particularly good guiding properties of such support rollers lead to that one on an otherwise necessary tracking of the winding roller shaft depending on the length of the rolled door leaf Introduction to the door leaf guides can be omitted.

As can be seen in particular from FIG. 4, the lower edge of the door leaf is formed by a curtain end rail 13 , which consists of at least two hollow chamber profiles 18 and 19 , one of which is designed as a base body 18 , in which the other, serving as a cover part 19, can be hung is for which purpose a cross-sectionally shaped formation 20 on the cover part 19 correspondingly formed in the longitudinal direction of the profile overlaps a web 21 which engages in the hook-shaped recess and is provided on the base body 18 . As a result, a kind of hinge movement about an axis running in the width direction of the curtain is possible between the two profile parts 18 and 19 . The two parts 18 and 19 , turned towards the lower edge of the curtain, form a claw mouth that can be opened and closed by the hinge movement and into which the closing edge region of the curtain 1 is inserted in the open state. The gripping of the closing edge area of the curtain 1 , which then takes place by closing the claw mouth, takes place across the curtain width and is fixed by a screw connection which braces the two parts 18 and 19 against one another while reaching through the curtain closing edge area. For this purpose, 19, the cover member has a rectangular cross-section cavity 22, in which, not shown, in the width direction of the curtain 1 spaced bolts are added, which engage through the curtain 1 and into a tread portion 23 of the main body 18 are screwed therein. The end profile of the curtain is provided with a rubber sealing bead protruding downwards and bears a yellow-black warning marking 24 on the front of the cover part 19 in the usual way.

This detail of the special training of the final profile at the closing edge of the curtain is not due to the above Execution characteristics of the remaining goal training limited, but can also be used for similar and thicker curtains Find.

The previously described embodiment of a Rolltores works with a curtain that is special supple, d. H. across its wide surface slightly and is permanently trained against breakdown or the preferred version with an inner layer and an outer layer and formed therebetween Connecting webs is designed such that when winding the outer layer by elastic Deforming the webs towards the inner layer, so that the curtain in the wound state has relatively small thickness, while at Unwind the elastic webs to deform back and thus an insulating cavity distance between Form the inner layer and outer layer.

Such a curtain isolated by cavities can however in a particularly insulating and possibly additional anti-burglary armored training such treatment may not be accessible, in particular then when closed cavities with a  Seal gas filling are provided.

The following exemplary embodiment of such a curtain is intended to schematically represent both of the aforementioned curtain designs and is described below with reference to the drawing in FIG. 5:

The drawing shows a short section of a curtain denoted by 1 for winding and unwinding on a provided, not shown winding roller, the axis of rotation of which is perpendicular to the plane of the drawing and is indicated schematically at 2 . The curtain section, seen from the right and running in the area of the opening to be closed, merges to the left into a curvature which is intended to indicate the bending stress in this winding direction. The section is shown in a side view or cross-sectional view perpendicular to the direction of movement of the curtain.

The curtain section has an outer layer 3 and an inner layer 4 , which are kept spaced between their mutually facing surfaces by an intermediate layer 5 , the latter consisting of a corrugated plastic web. The course of the wave goes in the direction of movement of the curtain 1 , the wave elevations and depressions themselves extend perpendicular to the direction of movement of the curtain, thus extending from the area of one side edge guide to the area of the guide of the other side area of the curtain. It can easily be seen that in this way a different resistance to bending forces is only achieved through the shape of the intermediate layer, which acts approximately perpendicularly on the wide area of the curtain. A deflection in the direction of the axis of rotation 2 is thus possible under relatively low forces, while the resistance to bending perpendicularly between the guides, for example due to wind loads on the curtain in the closed position, is considerably higher. In this way, it is not necessary to hold the side edges of the curtain in the guides in such a way that the side edges emerge laterally from the guide rails when there is a wind load or the like.

Between the outer layer 3 and the inner layer 4 , subdivided cavities 9 are formed by the wave course of the intermediate layer 5 , which should be filled with air in the present case and which, in a manner not shown, can be designed individually, at certain intervals or in their entirety towards the outside. This ensures good thermal insulation. A wire mesh 10 is embedded in the inner layer 4 , which is thicker than the outer layer 3 , and forms a burglar-resistant reinforcement.

Care can also be taken in this area that the transverse stability is higher than the bending stability in the winding direction of the curtain. The curtain itself has a total thickness d that is considerably greater than the individual thicknesses of the outer layer 3 and the inner layer 4 . From this it can be seen that the cost of materials in relation to the thickness is relatively low, which benefits the desired lightness of the curtain.

In order to keep away or reflect heat rays, in the present case the broad surface of the outer layer 3 facing outwards is provided with a non-ferrous metal coating 11 .

In this embodiment corresponding to the example, as well as in those according to the claims in general, the curtain is suitable not only as a roller door curtain, but also as a gate or closing leaf of a gate, the door leaf of which is in different levels in the open and closed positions, for example Ceiling link or sliding gate. In this respect, the axis of rotation 2 is to be regarded as the axis of curvature of a curved route section between different route sections. A curtain guided over a curved section in this way can be pulled in either of the two directions of movement manually or by a mechanical drive, but it is also possible to have a drive of whatever type act only on one of the front edges pointing in the direction of movement, for example the curtain also to push it into the closed position, especially if it is an overhead curtain arrangement.

1, which is denoted overall by 5 in FIG. 1, is arranged on the side of the winding shaft denoted overall by 6 , which has a hollow cylinder 7 , into which a circular side round plate is welded inward by means of a weld seam 9 which has openings 10 .

The device 5 also has bolts 12 which extend in the direction of the axis 11 of the winding shaft 6 and which engage in the openings 10 of the side round 8 with their free end. The other end of the bolt 12 is fixed in a ring gear designated overall by 13 . After the device 5 is fixedly arranged with respect to the wall bracket (not shown), when the winding shaft 6 rotates, the ring gear is driven via the openings 10 and the bolts 12 and rotates at the same speed as the winding shaft.

The ring gear 13 meshes with a bevel gear 14 , which is arranged with respect to the device 5 fixed and perpendicular to the axis 11 of the winding shaft 6 as the first link in a gear train.

Parallel to the first gear 15 , a second gear 16 meshing with it is provided as a further link in the gear train, to which a third gear 17 of larger diameter and larger number of teeth is arranged coaxially as the last gear. The two gears 16, 17 can be formed in one piece.

The third gears 17 each mesh with fourth gears 18 , which form a rotating part, which have a sleeve 19 with an internal thread, the third and fourth gears 17 and 18 being the same.

A threaded rod 20 is provided as a translation part, which engages in the internal thread of the fourth gear 18 or its sleeve 19 . In Fig. 2, the upper half with reference to the axis of the bevel gear 14 is provided with reference numerals. With respect to a plane of symmetry running perpendicular to the plane of the drawing through this axis, however, the device is mirror-symmetrical, so that it is clear that when the bevel gear 14 rotates due to the rotation of the winding shaft 6, the gear wheels of the gear train ( 15 to 17 ) the rotating part 18 and this against the Fixed translation part 20 moves, which means that when the winding shaft is unrolled, the threaded rod 20 is inserted into the device 5 in bores 21 provided for this purpose.

Furthermore, it can be seen that the device 5 is formed in two parts with respect to a plane 22 so that the axis 11 of the winding shaft 6 can be received.

Both threaded rods 20 are also rigidly connected to one another by means of a crossbar 24 . In the middle there is a holding device, generally designated 25 , by means of which the device can be attached, for example, to the wall in a housing-fixed manner.

The side of the device 5 facing the side round 8 is further provided with an annular sheet metal disk 26 which engages in a circumferential groove 27 on the ring gear 13 and thus keeps this in constant meshing engagement with the bevel gear 14 .

If within the framework of the above device, the represents a positively driven start-up console Faults, for example by breaking one of the gears occurs, self-locking occurs, which has the consequence that the shaft for winding of the curtain at a rigid distance from the fall remains. Then when the curtain is rolled up the distance to the wall or to the lintel increases at some point small, so that by winding the curtain - this applies in general to a roller door curtain - Forces arise that are a component on the shaft towards the lintel. For in this case, the device should move out of its stationary Loosen the wall-side bracket so that the Slide the shaft for the curtain freely on the console can. For this purpose is a stationary one Pen provided that when inserted in its working position Device in a bracket open on one side intervenes. The brackets are designed that when pushing the device in the direction the bracket-like opening on the wall or lintel when attacked, the bolt widens and the bolt gets into a clamp-like opening. These Opening is partly from the component, for example Die-cast part, formed on which also the spindles the device are held, in such a way that a bulge opens towards the wall, in which the fixed pin ultimately gets. A Part of this opening is in the middle of one Overlapped nose leading to a plastic bracket part  heard that in the die-cast part around a predetermined breaking pin is pivotally mounted. The nose stretches in the pulling direction of an eyelet of this clip part, and the bracket part designed as a two-armed lever has a spring-like beyond the predetermined breaking pin Bracket on the zinc cast or injection molded part is supported, as the drawing shows. This Spring clip is designed like a leaf spring.

This construction makes it possible to use the winding shaft with the device in the anchorage with the stationary Snap-type pin too convict. Do you want - for whatever reason - loosen this connection to the wall, then you pull on the eyelet so that deforming the leaf spring Partial and rotation around the breaking pin the nose releases the fixed bolt. This is for example for maintenance purposes and the like expedient.

The predetermined breaking pin has the task of failing the device the plastic part and thus the Clip from a connection with the injection molded part to solve so that the device along the console can slide freely and therefore the door leaf cannot is damaged, but in case of doubt also continue to operate can be.

Claims (35)

1. Curtain for releasing and closing a building opening, such as a gate entrance, vehicle loading opening or the like, which is guided flexibly in a direction perpendicular to its broad side and can be moved over a correspondingly curved section of the route, characterized by a multilayered in the direction of its thickness (d) Structure ( 3, 4, 5 ). 2. Curtain according to claim 1, characterized in that in the closed state, the outer layer ( 3 ) facing the opening outside and the inner layer ( 4 ) facing the opening inside are held apart from one another. 3. Curtain according to claim 2, characterized in that the outer layer ( 3 ) and the inner layer ( 4 ) by a web-shaped or meandering, in particular wave-shaped, intermediate layer ( 5 ) are kept spaced, the elevations ( 6 ) and depressions ( 7 ) extend parallel to the roll-up axis ( 2 ) of the curtain ( 1 ). 4. Curtain according to claim 3, characterized in that the intermediate layer ( 5 ) in the region of its elevations ( 6 ) and depressions ( 7 ) with the outer layer ( 3 ) and the inner layer ( 4 ) is welded or glued ( 8 ). 5. Curtain according to claim 3, characterized in that the three layers are in one piece than in the width direction extruded profile of the curtain are trained. 6. Curtain according to one of claims 3 to 5, characterized in that the cavities ( 9 ) formed by the intermediate layer ( 5 ) between the outer layer ( 3 ) and the inner layer ( 4 ) are interconnected. 7. Curtain according to one of claims 3 to 5, characterized in that the cavities ( 9 ) formed by the intermediate layer ( 5 ) between the outer layer ( 3 ) and the inner layer ( 4 ) are separated from one another in a gastight manner. 8. Curtain according to one of claims 3 to 7, characterized in that the cavities ( 9 ) formed by the intermediate layer ( 5 ) between the outer layer ( 3 ) and the inner layer ( 4 ) are filled with a high-density gas - for example uranium hexafluoride heat-insulating. 9. Curtain according to claim 1 or 2, characterized in that a highly porous foam is embedded between the outer layer ( 3 ) and the inner layer. 10. Curtain according to one of claims 1 to 9, characterized in that the layering of the curtain ( 1 ) has a burglar-resistant reinforcement, in particular a wire mesh ( 10 ). 11. Curtain according to one of claims 1 to 9, characterized in that one of the layers, in particular the inner layer ( 4 ), has a burglar-resistant reinforcement, preferably a wire mesh ( 10 ). 12. Curtain according to claim 11, characterized in that the burglar-resistant reinforcement, in particular wire mesh ( 10 ), is embedded in the inner layer ( 4 ). 13. Curtain according to one of claims 1 to 12, characterized in that the outer layer ( 3 ) is designed to be stretchable in the rolling movement direction. 14. Curtain according to one of claims 1 to 13, characterized in that the layers ( 3 to 5 ) - possibly only limited to a part of the curtain surface - are transparent, ie translucent or transparent. 15. Curtain according to one of claims 1 to 13, characterized in that at least one of the layers, in particular the outer layer ( 4 ), - possibly limited to only a part of the curtain surface - is reflective. 16. Curtain according to claim 15, characterized in that at least one of the layers, in particular the outer layer ( 3 ), has a non-ferrous metal coating ( 11 ). 17. Curtain according to one of claims 1 to 16, characterized in that one or more of the layers ( 3 to 5 ) made of plastic, in particular polyvinyl chloride, is or consist. 18. Blind according to one of claims 1 to 17, characterized in that it as Door leaf curtain of a roller shutter can be rolled up and unrolled is trained. 19. Blind according to one of claims 1 to 17, characterized in that in the manner of a vertically movable ceiling door leaf or one in the horizontal direction movable sliding gate leaf between the Open and the closed position about one section of the route running at a right angle is movably guided.   20. Curtain according to one of claims 1 to 19, characterized by at least one support device ( 14 ) which has a tubular, preferably textile, structure which is slidably guided around a fixed supporting body and on the outside of which the curtain is supported. 21. Curtain according to one of claims 1 to 19, which also has a relatively large layer thickness in the wound position, characterized in that a device acts on the winding shaft for winding and unwinding the curtain, the winding shaft along a support arm, a support bracket in depending on the winding thickness shifts, with a generator driven by the winding shaft (6) the first gear wheel (13), with an optionally through a gear train (15 to 17) drivingly connected thereto last gear wheel (17) and with a extending in the direction of the support arm , With respect to the wall bracket, there is a stationary translation part ( 20 ) along which a rotation part ( 18 ) driven by the last gear wheel ( 17 ) - when the winding shaft ( 6 ) rotates in the unwinding direction - moves in the direction of the outlet side of the roller door. 22. The apparatus according to claim 21, characterized in that the first gear wheel is a ring gear ( 13 ) which has axially extending bolts ( 12 ), and that these engage in openings ( 10 ) of the winding shaft ( 6 ). 23. The device according to claim 22, characterized in that the openings ( 10 ) in a in the hollow cylinder ( 7 ) formed winding shaft inwardly welded circular side plate ( 8 ) are attached. 24. Device according to one of claims 21 to 23, characterized in that the ring gear ( 13 ) meshes with a bevel gear ( 14 ) as the first link in the gear train. 25. The device according to claim 24, characterized in that coaxially to the bevel gear ( 14 ) is connected to a rotationally fixed first gear ( 15 ) as the second link of the gear train. 26. The apparatus of claim 24 or 25, characterized in that the bevel gear ( 14 ) and the first gear ( 15 ) are integrally formed. 27. The device according to one of claims 21 to 26, characterized in that parallel to the first gear meshing with this second gears ( 16 ) are provided as further members of the gear train. 28. Device according to one of claims 21 to 27, characterized in that coaxially to every second gear ( 16 ) is a third gear ( 17 ) of larger diameter and larger number of teeth, which is non-rotatable, is arranged as the last gear. 29. Device according to one of claims 21 to 28, characterized in that the third gears each mesh with fourth gears ( 18 ) which have an internal thread and form the rotary part. 30. The device according to claim 29, characterized in that the third and fourth gears are of the same size. 31. The device according to any one of claims 21 to 30, characterized in that two threaded rods with external thread are provided as translation part ( 20 ) which engage in internal thread of the rotating part. 32. Device according to one of claims 21 to 32, characterized in that the device is formed in two parts ( 22 ) for subsequent attachment about the axis ( 11 ) of the winding shaft ( 6 ). 33. Device according to one of claims 21 to 32, characterized in that the threaded rods ( 20 ) are rigidly connected to one another at their free end via a crossbar ( 24 ). 34. Apparatus according to claim 33, characterized in that the crossbar ( 24 ) in its central region has a holding device ( 25 ) on the wall or the like. 35. Device according to one of claims 21 to 34, characterized in that the side disc ( 8 ) facing side of the device ( 5 ) is provided with an annular sheet metal disc ( 26 ) which in a circumferential groove ( 27 ) on the ring gear ( 13 ) engages.