DE2844891A1 - Paired slatted door or window screen - has cords engaging front and rear slats of all pairs for closure - Google Patents

Abstract

A control device for swivelling activation engages a series of parallel strip-shaped closing elements in the doorway, window or similar opening. Each element consists of a pair of lamellae. Control involves tension devices (175) with two draw members, esp. cords (177). They engage all the pairs (155-157). The front cord engages the front lamella in each pair, and the rear cord engages the rear one, at equal transverse intervals from the swivel axis. This is done so that front and rear lamellae in each pair are moved apart into an opening position, when an opening force is exerted, and folded together in a closed position when the cords are released. This system is easily operated, and compact, with no protruding lamellae.

Description

Locking device for windows, doors or similar openings

The invention relates to a closure device for windows, Doors or the like. Openings of the type defined in the preamble of claim 1, according to patent ...

(Patent application P 27 44 451.5).

Such a locking device according to the main patent has proven itself. It enables incident sunlight to be reflected outwards, guaranteed a uniform illumination of the interior and, if necessary, gives the one to be closed Opening completely free. In addition, the locking device offers protection against the cold, Weather protection, burglary protection, enables complete darkening of the interior and limits the noise development when closed, even in windy conditions a minimum. In all cases, the locking device is simple according to the main patent in structure, function and handling. But it has been shown that the main patent inter alia described control device for moving the pairs of slats in their Open position and in their closed position, however, quite complex and with regard to their function is not always fully satisfactory, especially in the case of pairs of lamellae with very long single slats; because then it can happen that in the closed position of the pairs of lamellas, the individual lamellae are not tightly closed approximately in the area of their middle close tightly, but because of their flexibility there gaps and gaps remain. Also the space requirement measured in the transverse direction to the plane to be covered is still quite large due to this control device.

The invention is based on the object of the closure device according to the main patent while retaining the advantages achieved thereby to improve that by design of the control device the space requirement of the Closure device in the open position is as small as possible and their Individual slats then neither protrude excessively outwards nor inwards, that, above all, the locking device is quick and easy, and reliable can be brought into the open position and into the closed position, namely by only one activity at a time, and that the prerequisites are in place that even with very long pairs of lamellas, not only at the end, but also above all in the middle, when the closed position is reached, a reliable, tight seal guaranteed along the entire longitudinal extent of all pairs of lamellae as possible is. In everything, the closure device should be in terms of its structure, its Function and handling can be further simplified.

In the case of a closure device, the task is that in the preamble of claim 1 defined genus according to the invention by the features in the characterizing part of claim 1 solved.

This creates the conditions for movement Opening tensile force required in the opening position of the pairs of slats, e.g. via to be able to apply a control shaft by rotating it. The latter can by hand or by a motorized drive. It is just necessary, the two tension members per tension control device geared to the control shaft couple that expediently, as is known from blinds or shutters, above of the top pair of lamellas can be spatially fixed. Then one leads Rotary actuation of the control shaft by a predetermined angle of rotation to that on the tension members the opening tensile force is applied and thereby the individual slats each pair of slats is pivoted from the closed position to the open position and be kept in the latter. Should be from the open position to the closed position are passed over, the control shaft only needs about the opposite direction to be rotated at the same angle of rotation. This leads to a drop in the opening tension and releasing the tension members of each tension control device.

As a result of the weight of the individual slats, they then fall off even in their closed position. At the same time, the invention is a prerequisite created for this, also the swivel actuation of the individual slats from the open position to make in the closed position via similar tension members, so that then the Individual slats in the closed position with their lower edges firmly against each other the outer surface of the next pair of lamellas underneath are pressed on. this leads to the fact that in the closed position the individual slats over their entire length Fit tightly against each other, thus possibly gaps or gaps in particular in the middle area even with very long individual lamellas. It it goes without saying that, depending on the length of the pairs of lamellae, not just two, but several such traction control devices can be provided, e.g. for very long ones Pairs of slats Pull control devices in the middle area of the pairs of slats. It prevails So freedom of design, where and how many train control devices are arranged. The latter can be done without much additional effort depending on the actual circumstances, in particular the arrangement and the length of the pairs of lamellae can be determined. from a particular advantage is that through this design of the control device the open or closed position of the pairs of slats with a single control pulse can be produced. The effort for the control device is extraordinary small amount. Structure, function and handling are very easy. The susceptibility to failure is reduced to a minimum. At the same time it is advantageous that the closure device even when the pairs of slats are in the open position, in the direction of transversely to the plane to be covered has small dimensions, so neither to the outside still protrudes inward with the individual slats excessively. The overall visual impression the locking device is thereby significantly improved.

An advantageous embodiment results from claim 2.

Thereafter, the tension members are designed as opening members while the tension control device for moving the individual slats into the closed position has special closing links that work on the same principle as the opening links work. This does not lead to any significant increase in the effort and has the Advantage that the individual slats in their closed position each by acting on it Closing tensile force held and against the single slats closest below be pressed tightly. This also creates the entire association of the individual lamellae the locking device stiffened in itself. This reduces any noise development in the closed position due to attacking wind forces. At the same time, the Achieved cold protection, weather protection and burglary protection even further improved.

Further, advantageous embodiments emerge from the claims 3 - 5. This design ensures that the closure device, as one knows it from blinds, with a single movement or with a motorized drive the control shaft by a single control pulse from the Open position can be converted into the closed position and vice versa. Both the closing links and the opening members are actuated by the control shaft, in opposite directions. If a tensile force acts on the closing links in the closing direction of the individual slats a, then falls in the opposite direction with regard to the opening members the one so far acting opening tensile force from with accompanying release of the opening members. Same thing happens with reverse actuation and pivoting movement of the individual slats from the closed position to the open position. It goes without saying that the Closing members and the opening members also by hand, e.g. using a cable or the like, can be clearly actuated.

Another advantageous embodiment contains claim 6.

The fixation to the individual slats can be done in a variety of ways, e.g. by gluing, by fixing in the receiving openings of the individual lamellas attached to the closing links and opening links at the level of the individual slats Retaining elements that engage on the inside and outside of the individual slats, or in another, just as simple way.

Another advantageous embodiment contains claim 7.

The opening links and closing links disrupt the overall picture not, because they are in the distance range between the individual slats of a pair of slats get lost. At the same time it is achieved that the closing members and opening members can be passed continuously from pair of slats to pair of slats without in the individual slats themselves must be provided with special openings.

Another advantageous embodiment results from the claim 8. This presupposes a weak arch shape of the individual lamellae in cross-section and thus a resulting lever arm for the respective pivot axis, which itself at Assuming the closed position and a firm closing pull is still available.

The closing links fixed on the inside of the individual slats lead from there through the spacing area to the next pair of lamellas.

Another advantageous embodiment is contained in claim 9. It goes without saying that for the design of the joints a variety of constructive Possibilities are within the scope of the invention. The detachable described in claim 9 Attachment of the joint parts to the single slats makes it possible to use the single slats quick and easy to connect with the joints and the ~ parts that attack them.

This leads to a significant simplification of the manufacturing costs and the cost. The individual joint parts can be placed on the longitudinal edges commercially available single slats, hooked in, pushed in, clipped or otherwise fixed to it so that each joint part practically forms a rigid unit with the associated single lamella.

Further advantageous embodiments contain the claims 10, 11 and 12. The joints are designed roughly like scissors.

This creates the prerequisite for this in a particularly simple and functionally reliable manner Way the closing members and also the opening members in the distance range between to arrange the facing longitudinal edges of the individual slats and the entire Control device with all components for the production of the individual slats In addition, it is achieved that the locking members for transferring into the closed position only have very small shifts in path to perform ~. The same applies analogously to the transfer of the pairs of slats from the closed position to the open position regarding the opening members.

If both are acted upon via rotary actuation of the control shaft, needs the latter can only be rotated by a relatively small angle of rotation.

A design according to claim 13 is also advantageous.

However, it is by no means imperative that the guide elements also in each case run in the area of the joints and the tension control devices there. Particularly However, this is advantageous if the joints according to claims 9 - 12 are trained. Then namely, the joints can initially be used during manufacture fixed like a ladder on the guide elements and then with opening and locking members are connected before the joint parts are assigned to the individual Individual slats can be detachably attached.

Another advantageous embodiment contains claim 14.

As a result, an even better seal is achieved in the closed state. In addition, there is a risk of noise from the individual lamellae lying on top of one another even with strong wind forces or the like. Completely banned. In addition, a refined This protects the surface of the individual slats against scratching or other damage protected.

An embodiment according to claim 15 is also advantageous.

The trailing edge is therefore particularly simple and cheap in comparison to a split trailing edge according to the main patent, with regard to the special precautions on the other hand, it had to be taken that the trailing edge was in the open position of the locking device does not collapse by itself.

Another advantageous embodiment results from the claims 16 - 19. These measures allow the curtain to be guided with simple means the closure device in the direction transverse to the plane containing the closure device should cover, given. The funds used for this increase the dimensions not in this direction.

Rather, for this leadership it becomes the anyway between them facing longitudinal edges of the individual lamellas Distance range used to place the lead in it. It goes without saying that the single slats each run at a certain distance from the guide leg of the edge strips, so that for pulling up or lowering the entire curtain there is no blocking or jamming or the like. happens.

In the closed position of the individual slats is already in this way depending on the cross-sectional dimensioning of the guide legs and their damping andfor Sealing elements at the end created an effective seal at the same time as a support stop for the individual slats on the guide legs so that the individual slats at the end against forces acting across the opening, e.g. wind forces or the like, can support on the guide legs.

Claims 20 contain further advantageous embodiments - 25. This design is also simple in structure, function and handling. In the In the closed position, the hinged strips rest on each end of the individual slats their outside, namely sealing and at the same time supporting.

On the one hand, there is a tight seal along the side edge the entire closure device and on the other hand an additional support of the Curtains against forces that are directed across the plane that is to be covered.

When the individual slats are in the open position, the two hinged strips are effective as lateral guide links that prevent the curtain from migrating too much limit left or right, but play and movements in this direction Allow within certain limits and also the pulling up, which takes place in the manner of a blind or lowering the entire curtain does not stand in the way.

The control device of the folding strips can act on the latter Tension elements, e.g. cords, which preferably have suitable deflection links are performed on the control shaft of the train control device and synchronized with their Control movement can be actuated. These tension elements can on the one hand as closing links for closing and on the other hand as opening members for opening the hinged strips and in the same way as with the described tension control device of the individual pairs of lamellae be trained. The coupling with the control shaft can also be completely identical In the same way as described for the tension control device for the pairs of slats, thus also by the explained frictional engagement, further advantageous embodiments contain claims 26 - 32. In this design, the two-ended guide projections engage the trailing edge in the lowered state of the locking device not in the respective assigned recesses at the lower end of the respective folding strips, if the latter are in the unfolded guide position. Then the closure device Pulled up without interference and, starting from the pulled-up state, lowered will. Are the individual slats in the lowered state of the locking device brought into their closed position and the individual folding strips by means of their control device transferred into their folded position, then grip the two-ended guide projections the trailing edge into the recesses at the lower end of each associated hinge strip one, namely the arcuate, in particular approximately quarter-circle-shaped, engaging ends every lead. The last are therefore the folding movement of the folding strips not in the way of the folded position. If now the closure device z.

pulled up before the hinged strips in the folded position were moved out of this into their unfolded guide position, so can when pulling up the trailing edge relative to the still folded or partially folded Move the folding strips without blocking with damage or destruction entry; because the recesses at the lower end of each folding strip make it possible that Even during the unfolding movement of the folding strips, the trailing edge is already relatively to the folding strips up or down, e.g. when pulling up or lowering the locking device, can move. The guide projections with their engaging ends have the task of lowering the locking device with the first onset Movement of the pairs of slats into their closed position movement of the hinged strips into their folded position, in which they would block the unhindered lowering, to prevent. The folding strips, which tend to be in their folded position, actually hit with their facing side at the free end of the engagement ends of the guide projections and are thus blocked from collapsing. Only when the locking device is lowered so far that the engaging ends of the guide projections in The height of the recesses of the hinged strips is their superimposed closing possible by engaging the engagement ends in the recesses.

The full wording of the claims is foregoing only Avoidance of unnecessary repetitions are not reproduced, but only instead by naming the claim number referring to it, whereby however all these Claim features as expressly disclosed at this point and essential to the invention have to apply.

The invention is shown below with reference to in the drawings Embodiments explained in more detail. 1 shows a schematic front view a closure device which is inserted into the reveal of the opening to be closed and is in the open state, Fig. 2 is a schematic section along the line II-II in FIG. 1, but when they are in the closed position Individual lamellas and with a schematic indication of opening members engaging them and closing members, according to a first embodiment, FIG. 3 is a schematic, perspective and exploded view of a closure device according to FIG a second embodiment, with individual slats in the open position, Fig. 4 is a schematic, partially sectioned plan view of the closure device in Fig. 3, Fig. 5 and 6 each a schematic section, approximately corresponding to that in Fig. 2, a part of the closure device according to FIG. 3 in the open position or in the case of movement in the closed position, FIG. 7 shows a schematic, perspective and exploded view of part of the trailing edge and the right edge a closure device according to a third embodiment.

In the following description are for the parts that match those of the main patent (patent application P 27 44 451.5) correspond to 100 or 200 larger Reference numerals are used, so that in order to avoid repetitions on the Description is referred to in the main patent.

In Fig. 1, a closure device 111 is schematically according to the first embodiment shown, which is arranged within an opening 110, which covers the shutter 111 in the blind-like lowered state and closes in the closed position according to FIG.

The opening 110 is laterally of each vertical reveal sides 112 and 113 and bounded at the top by a lintel 115 running above it. At the bottom In the region of the opening 110 there is a horizontally extending ledge 114, e.g. Window ledge.

Part of the closure device 111 is a schematically indicated one Head rail 130 that runs parallel to lintel 115 and within opening 110 attached to the latter. A control shaft 147 is located within the upper rail 130 rotatably mounted, which are operated by means of conventional drives not shown, e.g. by means of Electric motor, belt drive or the like, can be rotated. In the area of the head rail 130, for example, there are at least two guide elements in the form of spacer cords on the latter 122, 123, which hang down in the vertical direction and are attached to their in Fig. 1 lower ends an end strip 129 is attached, which as a result of the weight forces, If necessary, provided with weights, the spacer cords 122, 123 in the shown, lowered state of the closure device 111 essentially keeps taut Not shown in for clarity Fig. 1 usual pull cords in blinds that attack the end strip 129 and lead to the upper rail 130 and to pull up the locking device 111 with Tensile force are loaded, e.g.

can be pulled directly by hand or via a belt drive, motorized Drive or the like. Be pulled up or lowered.

The closure device 111 has a multiplicity of individual ones relative to one another substantially parallel and strip-shaped closure elements in the shape of respective ones Lamella pairs 155, 156, 157. Each pair of lamellas 155-157 is two of the same wide single lamellas 158 and 159 or 160 and 161 or 162 and 163. The associated individual lamellas 158, 159 of the lamella pair 155 and the the remaining individual slats of the other pairs of slats are each e.g.

by means of joints arranged at a distance from one another in the longitudinal direction, of which in Fig. 2 only the joints 164, 165, 166 of one side and only schematically are shown, about respective, horizontally extending pivot axes 167 and 168 or 169 pivotally connected to one another. The joints 164, 165, 166 are located each in the space between the individual slats of the respective pair of slats 155 or 156 or 157, and at the point where the longitudinal edges of the individual slats meet are facing.

All pairs of lamellas 155, 156, 157 and the following are on the spacer cords 122 and 123 in the vertical direction at substantially equal intervals and approximately Fixed in the form of a ladder in such a way that the pairs of lamellae 155-157 are constricted opposite the spacer cords 122, 123 can neither move up nor down. The fixation is there made so that in the lowered state shown in FIGS. 1 and 2, the distance of the individual pivot axes 167 - 169 from each other is smaller than that in the vertical direction measured width of each individual lamella 158-163, such that then in its closed position according to FIG. 2, the individual lamellae 158, 159 of the upper pair of lamellae 155 with their lower edges the individual lamellas 160, 161 of the next pair of lamellas below 156 cover essentially without a slot. Additional seals contribute to the latter, e.g. sealing lips, sealing strips or the like, in the case of those at the respective lower edges (Fig. 2) of the individual lamellae 158-163 are arranged and run through longitudinally.

For the sake of clarity, such a seal is only for the single lamella 163 indicated with 174.

The closure device 111 has one on all pairs of lamellae 155 - 157 attacking, by hand, by rope, by belt strap or by a drive motor actuatable control device, by means of which the individual pairs of lamellae 155 - 157 about the respective pivot axes running in the direction of their longitudinal extent 167-169 are pivotable, either in their open position shown in FIG or in its closed position shown in FIG.

This control device has at least two train control devices 175 and 176, which are located e.g. in the respective area of the spacer cords 122 or 123 are located.

The train control devices 175, 176 are shown in FIG. 1 for clarity not particularly highlighted. Only in Fig. 2 is there a train control device 175 shown.

Both tension control devices 175, 176 are along the pairs of slats 155-157 at a distance from one another and expediently in the area of the respective Joints arranged, as shown in Fig. 2 for the arrangement of a train control device 175 can be seen. The tension control devices 175, 176 grip all pairs of slats 155 - 157 together and at the same time.

The following is the further design of the train control device on Example of those 175 in Fig. 2 explained.

The tension control device 175 has two tension members in the form of Pull cords 177 and 178, which are designed and effective as opening members. The front pull cord 177 on the right in FIG. 2 engages at a transverse distance from the pivot axes 167 - 169 directly on the front, in FIG. 2 right-hand individual lamellae 159, 161 and 163 on. The rear pull cord 178, on the left in FIG. 2, engages at the same transverse distance of the pivot axes 167-169 directly to the rear, left in FIG. 2 Single slats 158, 160 and 162. The attack is done so that the pull cords 177 178 tensile force can be transferred to the individual lamellas 158 - 163, in such a way that that with an opening tensile force acting on both pull cords 177, 178 in the direction of the arrow According to FIG. 2, all front individual lamellae 159, 161, upwards at the same time 163 and all rear individual lamellas 158, 160, 162 of the lamella pairs 155-157 are foldable away from each other in their open position shown in Fig. 1, in which the respective individual slats of a pair of slats 155, 156, 157 are essentially extend within a horizontal plane, can be seen from the curvature of the respective individual slats once. An opening pull on the pull cords 177, 178 thus leads to the individual lamellae of each lamella pair 155 being unfolded - 157. In the opposite way, the individual lamellas 158, 159 or 160, 161 or 162, 163 of the pairs of lamellae 155-157 when the opening pulling force drops and the opening is released of the pull cords 177 and 178 about the respective pivot axes 167-169 towards one another can be folded into its closed position shown in FIG. The latter happens, for example, automatically solely as a result of the weight of the individual lamellas.

As FIG. 2 also shows using the example of the train control device 175, each of the two train control devices 175, 176 also has two additional, Closing links 179 that transmit traction and are also designed as pull cords, 180 on. The front locking member 179, on the right in FIG. 2, engages in the same way like the pull cord 177 on all front single slats 159, 161 and 163 at the same time at. In the same way, the rear, in Fig. 2 left locking member 180 engages the rear single slats 158, 160 and 162 at the same time. This attack also takes place at a transverse distance from the respective pivot axis 167-169.

The closing members 179, 180 are on the individual slats mentioned fixed so that when train on the locking members 179, 180 this as a force on the Individual lamellae is transmitted The force application is chosen so that each the front and rear single lamella 159 or 158 and more of each lamella pair 155 with a closing tensile force acting on both closing members 179, 180 in the direction of the arrow and with a simultaneous decrease in the opening force with the release of the two pull cords 177, 178 about the respective pivot axis 167 into the closed position shown in FIG. 2 are mandatory. By pulling on the closing members 179, 180, the individual lamellae become 159, 158 force-locked into the closed position shown in FIG. 2, with associated pressure of their respective lower edges on the individual lamellas 161 or 160 of the next pair of lamellas 156 below that falls on the closing links 179, 180 acting closing tensile force and the latter are released, so are the Individual slats 159, 158 can then be folded into their open position when on the pull cords 177, 178 an opening tensile force acts in the direction of the arrow according to FIG.

The two pull cords 177, 178 and the two closing members 179, 180 are each on the individual lamellae 158-163 fixed, e.g. glued, attached or otherwise attached. As can be seen from Fig. 2, at least the two closing elements of the 179, 180 by the one between two individual lamellas 158, 159 and 160, 161 and 162, 163 each pair of lamellae 155-157 in the area of the respective pivot axis 167-169 formed spacing area passed through from pair of slats to pair of slats. Included the closing members 179, 180 are each in the area of the in the closed position according to Fig. 2 facing inner surfaces of the individual lamellae 158-163 on these fixed.

In the second embodiment shown in Fig. 3 - 6 are for the parts that correspond to the first exemplary embodiment are reference numerals greater by 200 used, so that this to avoid repetition on the description of the first embodiment is referred to.

The second embodiment differs from the first one with regard to the design of the joints with the formation of the pivot axes 267-269 and on the other hand with regard to the fixation of the two pull cords 277, 278 on the one hand and the two closing members 279, 280 on the other hand.

The design of the joints is illustrated using the example of joint 264 in FIG Fig. 3 upper pair of lamellae 255 with reference in particular to Fig. 4-6 below explained, whereby this design applies to each joint. The joint 264 between the single lamellae 258 and 259 has two joint parts 281 and 282, which are in the longitudinal direction of the individual lamellae 258, 259 are arranged here next to one another and in the area of the Articulation axis 267 are pivotably coupled to one another. Both joint parts 281, 282 form an element that can be subsequently attached to the individual slats 258, 259 is, i.e. can be releasably attached to the latter, in particular clamped on the inside, clipped in, pushed in or otherwise releasably attached to it will can. One joint part 281 is flexible and non-slip with the single lamella 259 connected, while the other joint part 282 fixed in the same way with the other single lamella 258 is connected. The pivot axis 267 is located in the middle in the distance range 283. It is not mandatory, but advantageous if, as shown, the vertical spacer cords 222 and 223 each in the area of the joints 264 and engage at the level of the joint axis 267.

The joint part 281 fixed to the single lamella 259 has a joint legs 285 projecting in the transverse direction beyond the pivot axis 267, to the rear single lamella 258, on the left in FIGS. 5 and 6, over the hinge axis 267 protrudes and forms a lever arm there. In the same way the other shows The joint part 282 fixed to the single lamella 258 also has one in the transverse direction joint legs 286 protruding beyond the pivot axis 267. The latter stands to the front single lamella 259 on the right in FIG. 6 via the hinge axis 267 over and forms a lever arm there. The joint 264 thus has approximately the shape of a scissor, the pivot point of which is predetermined by the pivot axis 267.

The pull cords 277, 278 and the locking members 279, 280 engage Joint 264 and thus indirectly to the individual lamellae 258, 259.

That closing member 279, which is used to close the front, shown in Fig. 5 and 6 right lamella 259 is used, is on the joint leg 285 of the joint part 281 fixed. The other closing element 280, which is used to actuate the closing of the other lamella 258 is used, is fixed on the joint leg 286.

The pull cord 277 used to open the single lamella 259 engages on the joint part 281, on the side of the pivot axis 267, which is the joint leg 285 opposite.

The other pull cord 278, which is used to open the single lamella 258 engages the other joint part 282, on that side of the pivot axis 267, which lies opposite the joint leg 286. The respective points of attack of the two locking members 279, 280 and the two pull cords 277, 278 on the joint 264 lie at the same transverse distances from the pivot axis 267.

An opening tensile force acting on the pull cords 277, 278 in Fig. 6 has towards the top, with the corresponding release of the locking members 279, 280 for Result that the individual lamellae 259, 258 about the pivot axis 267, fixed to the Spacer cord 222, up and away from each other in their open position unfold.

One on the closing members 279, 280 in the direction of the arrow according to FIG. 6 upwardly acting closing tensile force with the release of the pull cords 277, 278 is in opposite directions a folding movement of the individual lamellae 259 or 258 in their closed position for Episode.

As can be seen from Fig. 3, the two traction control devices are 275 and 276 designed identically. Further details are referring to the train control device 275 explained. Both pull cords 277 and 278 serving as opening members are above of the uppermost pair of lamellas 255 merged to form an opening cable 287. In the same In this way, the two locking members 279, 280 are brought together to form a locking pull 288. The opening cable 287 and the closing cable 288 are coupled to one another and via the rotatably bare control shaft 247 out, with which it is either fixed or, as shown, are coupled via frictional engagement. In addition are the opening pull 287 and the locking cable 288 is attached to a coupling strap 289. The latter is with frictional engagement guided over a drive pulley 290 connected non-rotatably to the control shaft 247, which is wrapped by the coupling tape 289 with a wrap angle of about 180 °. Of the The central core of the drive pulley 290 is, as is not further shown, with surface roughness, e.g. axial grooves, provided on its upper side to ensure the frictional engagement between Drive pulley 290 and coupling belt 289 to increase. Also not shown are at the ends of the coupling belt 289 seated end stops that limit the angle of adjustment, which interact with invisible, assigned and spatially fixed stops. When the end stops hit the spatially fixed stops, the frictional connection is established lifted between the drive pulley 290 and the coupling belt 289, so that then the control shaft 247, it is driven further in the direction of rotation, together with the Drive pulley 290 rotates freely relative to the fixed coupling belt 289.

As can be seen in particular from FIG. 4, in the second exemplary embodiment not only the pull cords 277, 278 but also the two locking members 279, 280 through the spacing area 283 between two individual lamellae 258, 259 in the area the pivot axis 267 passed through and thereby in the vertical direction of a pair of lamellae continued to a pair of lamellas.

The trailing edge fixed at the lower end of the spacer cords 222, 223 229 is designed in one piece. Their length corresponds essentially to that of each Pair of lamellas 255-257. In the transverse direction, the end strip 229 extends over a width equal to that of each pair of lamellae 255-257 in that shown in FIG Open position corresponds essentially.

On both sides of the lamella pairs 255 - 257 and in the area of the ends of the latter Edge strips 216, 217 are arranged, which are approximately vertical and at right angles to the Run through the longitudinal extension of the pairs of lamellae 255-257. Each skirt 216, 217 has a guide leg 234 or 235, which is approximately at the level of the respective pivot axis 267 - 269 runs vertically continuously and with its to the end of the pairs of lamellas 255 - 257 pointing edge area reaches into the spacing area 283 (Fig. 4), each between two individual lamellae 258, 259 in the area of the pivot axis 267 is formed. As a result, each pair of slats 255-257 is over the guide legs 234, 235 guided transversely to the longitudinal extent. Each guide leg 234, 235 can, as indicated in Fig. 3 and 4, damping and / or on both broad sides Wear sealing elements 236, 237 to which the individual slats 258, 259 of each pair of slats can strike with their adjacent longitudinal edges at the end with a dampening effect.

The aforementioned elements 236, 237 can be in the form of lips, ridges or the like and consist e.g. of felt or rubber-elastic material, e.g. rubber, Plastic, foam or the like.

The one-piece end strip 229 has at both ends in the area of the respective guide leg 234, 235 has a recess 244, 245 into which the guide leg 234 or 235 can engage with its edge area.

As can be seen, each edge strip 216, 217 has a T-profile in cross section, whose central web forms the guide leg 234 or 235 and its crosshead can be used for attachment to the respective reveal side of the opening.

On each edge strip 216, 217 there is also the respective one on both sides Guide leg 234 and 235 each have a folding strip around one to the pivot axes 267 and following running roughly at right angles and roughly perpendicular Axis pivotably arranged # The two folding strips of the guide leg 234 are labeled 246, 248. The swivel mount is e.g. on the crosshead of the T-profile or on its guide leg and is designed in any way, e.g. hinge-like by eyes, hook-shaped pivot bearings or the like. In the open position shown in FIG of the pairs of lamellae 255-257, the two folding strips 246, 248 are approximately at right angles aligned with the plane of the guide leg 234. In the closed position of the pairs of slats, As can be seen, for example, from Fig. 2, the two flap strips are 246,248 can be folded in towards all pairs of lamellae in such a way that each folding strip 246, 248 at the end of the pairs of lamellae 255-257, the two individual lamellae on their outside covers, namely the folding strip 246, the front individual lamellae and the folding strip 248 the rear single lamellae. Both folding strips 246, 248 are essentially located sealing on the outside in the end area of the individual lamellas. Thus it results A tight seal on the edge. In the unfolded position shown in FIG. 3 the folding strips 246, 248 of each edge strip 216, 217 form the end edges of the individual slats a guide stop in the lateral direction, so in Fig. 3 to the left and to the right.

The folding strips 246, 248 end in the illustration in FIG their lower ends above the trailing edge 229, so that the latter of the described Does not get in the way of the folding movement. This is according to the exploded view 3 cannot be seen. The two folding strips 246, 248 can be on their end edges of the individual lamellas 258, 259 facing surface a continuous damping and / or sealing element 208 or 209, e.g. in the form of a lip, strip or the like. This causes the individual lamellae 258, 259 and others to strike with their end edges damped on the folding strips 246, 248. Simultaneously can do the described Elements 208, 209 take on additional sealing function, at least when the Closing device is in the closed position and the folding strips 246, 248 are are in their folded position. A control device is not shown further for both folding strips 246, 248 of each edge strip 216 and 217, by means of which all four folding strips together in their folded position and back in their in FIG. 3 Guide position shown are movable. This control device of the folding strips 246, 248 can e.g. - 257 be synchronized so that the folding strips 246, 248 only after reaching the closed position of the individual lamellae 258, 259 in their described folded position are movable and that the folding strips 246, 248 before the initiation of the opening movement of the individual lamellae 258, 259 back into their guide position shown in FIG. 3 are movable.

This described control device of the folding strips 246, 248 can pulling elements engaging the hinged strip, e.g.

Cords, which preferably have suitable deflection links are performed on the control shaft 247 and operated synchronously with the control movement will.

On the one hand, these tension elements can be used as locking members for folding shut and on the other hand as opening members for opening the folding strips 246, 248 and in the same way as with the described train control device 175, 176 or 275, 276 be formed. The coupling with the control shaft 247 can also be completely identical Way, as described for the Zugsteuerervorich lines 275, 276, so also by the explained frictional engagement.

Should the locking device located in FIG. 3 in the open position are brought into their closed position, the control shaft 247 w-rd in the direction of the arrow 291 actuated. About the coupling belt 289 and the locking cable 288 is on the Closing members 279, 280 exerted a tensile force directed upward in FIG. 3. the Closing members 279 and 280 are thus corresponding in the angle of rotation Dimensions raised. At the same time, the opening pull 287 in Fig. 3 released downward, resulting in corresponding release of the pull cords 277, 278 in Fig. 3 leads downwards. Since the joint 264 at the level of the pivot axis 267 remains firmly held on the spacer cord 222, the individual lamellas 259 or 258 in the direction of arrow 292 according to FIG. 6 from the open position to the closed position convicted. If the position shown in FIG. 2 is reached, one continues to have pending closing tensile force on the closing members 279, 280 with the result that the individual slats 259 or 258 with their lower edge firmly and essentially tightly over the entire length pressed against the outside of the individual lamellae 261 or 260 located underneath will.

In this closed position, the result is a closed, tight one Association that closes the opening tightly, on the one hand light-tight and on the one hand other tight against air and sound penetration.

One still acting on the control shaft 247 in the direction of arrow 291 Rotary actuation causes the frictional engagement between the coupling belt 289 to be released and the drive pulley 290; because then one of the end stops of the coupling tape hits 289 on a spatially fixed stop, not shown, in the area of the head rail on, so that if the control shaft 247 continues to be turned in the direction of the arrow 291 the coupling tape 289 is no longer taken along in this direction. The steering shaft 247 rotates relative to the coupling belt 289.

Should the closure device move from this closed position into its open position are transferred, the control shaft 247 is rotated in the opposite direction in the direction of arrow 293.

Now acts from the coupling belt 289 on the opening cable 287 and from the latter on the pull cords 277, 278 a pulling force directed upwards in FIG. 5. The pull cords 277, 278 are pulled upwards in accordance with the angle of rotation of the control shaft 247. To the same extent and associated therewith, the locking pull 288 and above it the locking members 279, 280 released downwards. Thus the single slats 259 and 258 in FIG. 5 in the direction of arrow 294 from the closed position upwards and pivoted away from each other into the open position.

In the third embodiment shown in Fig. 7 are for Parts that correspond to the first and / or second exemplary embodiment are 300 larger Reference numerals are used, so that in order to avoid repetitions on the previous description is referred to.

The third embodiment according to FIG. 7 differs from the preceding, in particular the second embodiment, solely with regard to the design of the end strip 329 and the lower end of the respective folding strips 346, 348 of each skirt 317.

In the third embodiment, the trailing edge 329 is at both ends shortened compared to the invisible single lamellas above, at least about the width of the respective hinged strips 346 at each end, 348. At each shortened end, only that of the one in Fig. 7 for the sake of simplicity right end can be seen, the end strip 329 has two protruding in the longitudinal direction, approximately strei: # n-shaped guide projections 395, 396 on. The latter run transversely to the longitudinal direction seen at a distance from each other and delimit a free space between them, the is wider than the guide leg 335, so that the latter engage in this free space can. In this way, the trailing edge 329 is guided in the same way as the trailing edge 229 according to FIG. 3.

While in the first embodiment (see in particular Fig. 1) the folding strips there end above the end strip 129 there, extend In the third embodiment according to FIG. 7, the folding strips 346, 348 each Edge strip 317 with its lower end in the lowered state of the closure device beyond the trailing edge 329 and approximately up to its lower edge.

The folding strips 346, 348 of each edge strip 317 have on the shown lower end each have a recess 349 or 350, which is open at the bottom. Every The recess is designed as a pronounced vertical slot running in the height direction. In this respective recess 349, 350, the folding strips can in the folded position 346 and 348 engage the associated guide projections 395 and 396, respectively. In the shown, not folded guide position of the folding strips 346, 348, however the guide projections 395, 396 do not engage in the recesses 349 or 350, so that in this position the locking device is pulled up or trouble-free can be lowered again. In the folded position, not shown, the adhesive strips 346, 348, on the other hand, the guide projections 395 and 396, respectively, engage in the associated ones Recesses 349 and 350 respectively.

The length of the recesses 349, 350 and also that in the width direction the measured transverse dimension or the shape viewed in this direction are selected so that that in the recesses 349, 350 of the hinged strips 346 and 348 engage Guide projections 395 and 396 the end strip 329 on the length of the recesses along the edge strip 317 can be moved upward in the vertical direction relative to the latter is.

Furthermore, these dimensions are chosen so that the two hinged strips 346, 348 from the folded position into its shown, unfolded guide position or vice versa are foldable, especially at the beginning of the pulling up of the lowered locking device can be folded out of the folded position or before the closure device is completely lowered can already be folded into their folded position. In both cases, the closure device can still be moved in the vertical direction, i.e. the trailing edge 329 relative to the edge rail 317 can still be moved without the end strip 329 blocking the hinged strips 346 348 bumps. About the height of the recesses 349, 350 measured in the vertical direction an overlap area of the movements set for control purposes, and in the way it is necessary, e.g. when the locking device is already being pulled up and when the folding strips 346, 348 are still in the folded position, the latter during of the already initiated pulling up into the unfolded, visible in FIG. 7 To be able to fold out the guide position.

That part of the guide projections 395, 396 that alone in the Folded position and before reaching the unfolded guide position of the folding strips 34G, 348 engages in their recesses 349 and 350, respectively, consists of an arc-shaped, in particular approximately quarter-circle-shaped engagement end at the free end of the guide projections 395, 396. The arcuate engagement ends are each transverse to the longitudinal direction the End strip 329 seen beyond the remaining part of the guide projection. Both guide projections 395, 396 together with the respective arcuate engagement ends thus have roughly the shape of a gripper with an arcuate shape at the free end outwardly evasive gripping claws.

If the two folding strips 346, 348, starting from the one shown, Unfolded guide position is pivoted into its folded position, so perform the Recesses 349 "or 350 a quarter circle pivot around the dot-dashed line, respective pivot axis of the hinged strip.

This pivoting movement can be carried out unhindered. After driving through a certain pivot angle reaches the free end of each arcuate engagement end of the guide projection 395 or 396 into the interior of the recess 349 or 350.

The folding strips 346, 348 push through as the pivoting angle increases the arcuate engagement ends the associated recess 349 or 350 roughly like an arc hinge, wherein the free end of each arcuate engaging end is at the rear of the hinge strip 346, 348 increasingly survives. Are the folding strips 346, 348 in their Folded position and if the lowered locking device is pulled up, so is a relative displacement of the trailing edge 329 with respect to the edge strip 317 according to possible at the top, in which case the guide projections 395, 396 with their arcuate Engaging ends in the vertical direction are within the recesses 349 and 350, respectively move upwards until reaching the stop, which is caused by the vertical Length of the recesses 349 and 350 is specified.

It is then sufficient if the folding strips 346, 348 during this Shifting movement from its folded position into the shown, unfolded guide position be swung open, provided the guide position is reached, before the guide projections 395 396 strike the upper end of the recesses 349 or 350 in the manner described. The unfolding of the folding strips 346, 348 can thus result in the pulling up of the closure device are superimposed, the superimposition time being determined by the vertical length of the recesses 349, 350 and the speed with which the closure device is pulled up. The guide projections 395, 396 with their circular arc-shaped engaging ends have the task of lowering the locking device with the first onset Movement of the pairs of slats into their closed position movement of the hinged strips 346, 348 in their folded position, in which they block the unhindered lowering would prevent. The folding strips 346, 348, which tend to be in their folded position, namely bump with their facing side at the free end of the engaging ends of the Guide projections 395 or 396 and are thereby blocked from collapsing. Only when the locking device is lowered so far that the Engaging ends of the guide projections 395, 396 at the level of the recesses 349 or 350 of the folding strips 346 and 348 are located, their superimposed closing is through The engagement ends can engage in the recesses 349, 350.

It is indicated in Fig. 7 that the folding strips 346, 348 on the surface which points to the end strip 329, each wear a seal 397 or 398, which runs roughly at an angle along the right or left as well as the upper edge in FIG the respective recess 349 or 350 delimits. This is in spite of the cutouts 349, 350 then provide a reliable seal when the hinged strips 346, 348 are in the folded position and on the outside of the lower individual slats at the end of which are folded down.

L e r s e i t e

Claims (32)

Claims S locking device for windows, doors or the like. Openings, the individual parallel and strip-shaped closure elements has, which can be moved up and down within a plane by means of guide elements are performed and on which an actuatable control device for pivoting actuation engages about a pivot axis extending in its longitudinal extension, each Closure element from a pair of lamellae with two preferably equally wide individual lamellae is formed, which by means of joints therebetween about the pivot axis articulated with one another are connected, and each pair of slats on the associated guide elements is fixed in such a way that the distance between the individual pivot axes in the lowered state is smaller than the width of the slats measured in the vertical direction, such that then in their closed position the individual slats of each upper pair of slats with their lower edges the individual lamellas of the next pair of lamellas below Cover slit loose, according to patent ... (patent application P 27 44 451.5), d a du r c h g e k e n n n z e i c h n e t that the control device at least two lengthways of the pairs of lamellae (155-157; 255-257) at a distance from one another and preferably in the area the respective joints (164 - 166; 264) arranged, tension control devices acting on all pairs of lamellas (155 - 157; 255 - 257) (175, 176; 275, 276), each with two tension members (177, 178; 277, 278), in particular pull cords, one of which is the front tension member (177; 277) directly (Fig. 2) or indirectly (Fig. 3 - 6) at a transverse distance from the pivot axis (167; 267) on the one, front single lamella (159, 161, 163; 259, 261, 263) and the other, rear tension member (178; 278) directly or indirectly in preferably the same transverse distance from the pivot axis (167; 267) on each of the other, rear ones Single lamella (158,160,162; 258,260, 262) transmits tensile force and acts in such a way that that the front and rear single slats (159 and 158; 259 and 258) of each pair of slats (155; 255) in one on both tension members (177,178; 277,278) of each tension control device acting opening tensile force away from each other in the open position and when the Opening tensile force and release of both tension members (177,178; 277,278) of each tension control device can be folded towards one another in the closed position about the respective pivot axis (167; 267) are. 2. Closure device according to claim 1; d a d u r c h e k e n n n notices that the tension members (177,178; 277,278), in particular pull cords, are designed as opening members and that each tension control device (175, 176; 275, 276) two additional, tensile force-transmitting closing elements (179,180; 279,280), in particular Pull cords, of which one closing element (179; 279) on the one single lamella (159; 259) and the other closing element (180; 280) on the other single lamella (158; 258) of each pair of lamellae (155; 255) at a transverse distance from the pivot axis (167; 267) transmits tensile force and acts in such a way that the front and rear individual lamellae (159 and 158; 259 and 258) of each pair of slats (155; 255) with one on both closing members (179,180; 279,280) each train control device acting Clamping force and simultaneous drop in the opening tension when both opening links are released (177,178; 277,278) around the respective pivot axis in the closed position (Fig. 2; Fig. 6) are compulsory by pressing their respective lower edges against the individual lamellas (161,160; 261,260) of the next pair of lamellae below (156; 256) and that the front and rear single lamella (159 and 158; 259 and 258) when the Closing tensile force and release of both closing elements (179,180; 279,280) of each traction control device can be folded into the open position by means of the opening members (177,178; 277,278). 3. Closure device according to claim 1 or 2, d a d u r c h g e it is not indicated that the two opening members (177,178; 277,278) as well the two locking members (179,180; 279,280) of each train control device in the area above the top pair of lamellas (155; 255) each to an opening cable (287) or closing pull (288) are brought together. 4. Closure device according to claim 3, d a d u r c h g e k e n n shows that the opening cable (287) and the closing cable (288) are coupled to one another and are guided via a rotatable control shaft (247) with which they are fixed or are coupled in particular via frictional engagement. 5. Closure device according to claim 4, d a d u r c h g e k e n n z e i c h n e t that the opening cable (287) and the closing cable (288) on a coupling belt (289) are attached, with a frictional connection via a rotationally fixed to the control shaft (247) connected drive pulley (290), e.g. Drum, is out and the adjustment angle limiting, with has associated, spatially fixed stops interacting end stops, when they strike the stops, the frictional engagement between the control shaft (247) and the coupling tape (289) can be lifted and the Control shaft (247) is freely rotatable in relation to the .t ~ double belt (289). 6. Closure device according to one of claims 1-5, d a d u r c h g e k e n n n n z e i c h n e t that the two opening links (177,178; 277,278) and the two closing members (179,180; 279,280) of each tension control device in the opening direction or closing direction are fixed to the individual slats so as to transmit tensile force. 7. Closure device according to claim 6, d a d u r c h g e k e n n notices that the two opening members (177, 178; 277, 278) and / or the two Closing members (179,180; 279,280) of each train control device through the between two Individual lamellae (159,158; 259,258) of each lamella pair (155; 255) in the area of the Pivot axis (167; 267) spaced area (283) formed by the pair of lamellae are led to a pair of lamellae. 8. Closure device according to one of claims 1 - 7, d a d u r c h g e k e n n n n z e i c h n e t that the two closing members (179,180) each in the area of the inner surfaces of two individual slats facing each other in the closed position (159 or 158) of each pair of lamellae (155) are fixed to them. 9. Closure device according to one of claims 1 - 8, d a d u r c h e k e n n n n e i c h n e t that each joint (264) is between two individual slats (259,258) two releasably attached to a single lamella of the lamella pair (255), in particular joint parts that are clamped, clipped in or pushed in on the inside (281,282), each with the respective single lamella (259 or 258) Are flexurally and non-slip connected and with each other in the area of the joint axis (267) are pivotably coupled. 10. Closure device according to claim 9, d a d u r c h g e k e n n z e i c h n e t that each joint part (281, 282) of the respective joint (264) a joint leg projecting in the transverse direction beyond the pivot axis (267) (285 or 286), of which the joint leg (285) of the at the front Single lamella (259) engaging the joint part (281) to the rear single lamella (258) and the joint leg (268) of the rear single lamella (258) engaging joint part (282) to the front single lamella (259) over the joint axis (267) survives. 11. Closure device according to one of claims 1-10, d a d u r c h g e k e n n n z e i c h n e t that of the two locking members of each traction control device (275) the one closing element (279) on one and the other closing element (280) on the other joint legs (285 or 286) of a joint (264) engages in a tensile force transmitting manner and that of the two opening members one (277) on a hinge part (281) and the other (278) on other joint part (282) of this joint (264) and each on the side of the Pivot axis (267) engages which the joint leg (285 or 286) opposite. 12. Closure device according to claim 11, d a d u r c h g e k e n n z e i c h n e t that the points of application of the two closing elements (279,280) and of the two opening members (277, 278) on the joint (264) at equally large transverse distances from the pivot axis (267). 13. Closure device according to one of claims 1-12, d a d u r c h g e k e n n n z e i c h n e t that the guide elements (122,123; 222,223), in particular in the form of spacer cords on which the individual pairs of lamellae (155 - 157; 255-257) are each fixed roughly like a ladder, each in the area of Attack joints (164-166; 264) and preferably at the level of the pivot axis (167-169; 267). 14. Closure device according to one of claims 1-13, d a d u It is noted that the individual lamellae (163) on their in the closed position (Fig. 2) Seals (174) running along the lower edges, e.g. sealing lips, Sealing strips or the like. Have. 15. Closure device according to one of claims 1-14, g e k e n n z e i c h n e t d u r c h a one-piece end strip (129; 229), which is attached to the lower End of the guide elements (122,123; 222,223) is fixed, with respect to their length approximately corresponds to that of each pair of lamellae (155-157; 255-257) and extends across it and extends to the hidden plane over a width equal to that of each pair of blades in its open position (Fig. 1; Fig. 3) corresponds essentially. 16. Closure device according to one of claims 1-15, g e k e n n z e i c h n e t d u r c h on both sides of the lamella pairs (255-257) in the area the ends of which are approximately vertical and at right angles to the longitudinal extent of the pairs of lamellae Continuous edge strips (216,217) each with a guide leg (234 or 235), which runs vertically continuously approximately at the level of the respective pivot axes (267) and with its edge area pointing towards the end of the pair of lamellas (255-257) in the spacing area (283) engages, each between two individual lamellas (259,258) is formed in the area of the pivot axis (267). 17. Closure device according to claim 16, d a d u r c h g e k e n It is not indicated that the guide leg (234) at its edge area on both Broad sides damping and / or sealing elements (236, 237), in particular lips, strips or the like made of e.g. approximately rubber-elastic material, e.g. rubber, plastic, foam or the like., to which the individual slats (258-263) of each pair of slats (255-257) with their adjacent longitudinal edges at the end can be applied in a damping manner. 18. Closure device according to one of claims 15-17, d a d u it is noted that the one-piece end strip (229) on both Ends in the area of the guide leg (234,235) a recess (244 or 245), in which the guide leg with its edge area intervenes. 19. Closure device according to one of claims 16-18, d a d u r c h g e k e n n n z e i c h n e t that the two edge strips (216,217) in cross section Have a T-profile, the central web of which forms the guide leg (234, 235) and whose crosshead is used for attachment. 20. Closure device according to one of claims 16-19, d a d u r c h g e k e n n n z e i c h n e t that on each edge strip (216) on both sides of the Guide leg (234) each have a folding strip (246,248) around one to the pivot axes (267) approximately at right-angled axis pivotably arranged in the in the open position (Fig. 3) each pair of lamellae (255-257) approximately at right angles to the plane of the guide leg (234) is aligned and in the closed position of each pair of slats to this can be folded in such a way that each folding strip (246, 248) ends at the end of the pairs of lamellae (255-257) whose two individual slats (258-263) on the Outside covered and rests on it in a substantially sealing manner. 21. Closure device according to claim 20, d a d u r c h g e k e n It should be noted that the two hinged strips (246,248) of each edge strip (216) in the open position of the pairs of slats for the end edges of the individual slats (258-263) form a guide stop in the lateral direction. 22. Closure device according to claim 20 or 21, d a -d u r c h it is not noted that the two folding strips (246,248) of each edge strip (216) on their surface facing the end edges of the individual lamellas (258-263) continuous damping and / or sealing element (208 or 209), in particular one Wear lip, groin or the like. 23. Closure device according to one of claims 20-22, g e k e n n z e i c h n e t d u r c h a control device for both folding strips (246,248) each edge strip (216), by means of which all the folding strips together in their folded position and can be moved back into their guide position. 24. Closure device according to one of claims 1 - 23, d a d u r e k e k e n n n n e i c h n e t that the control device of the folding strips (246,247) so synchronized with the tension control devices (175,176; 275,276) of the pairs of lamellae is that the folding strips (246,248) only after reaching the closed position of the Individual slats in their folded position and before initiating the opening movement of the Individual slats can be moved back into their guide position. 25. Closure device according to claim 23 or 24, d a d u r c h g e k e n n n n n e i n e t that the control device of the folding strips (246,248) having tension elements acting on the hinged strip, which are preferably via deflecting members are guided on the control shaft (247). 26. Closure device according to one of claims 20 to 25, d a d u r c h g e k e n n z e 1 c h n e t that the end strip (329) is opposite at both ends the individual lamellae (158-163; 258-263) is shortened, preferably at least about the width of the hinged strips (346, 348) there at each end. 27. Closure device according to claim 26, d a d u r c h g e k e n It is noted that the trailing edge (329) has two lengthways at each shortened end has protruding guide projections (395, 396) which are transverse to the longitudinal direction run at a distance from each other and delimit a free space between them, in which engages the guide leg (335) of the edge strip (317). 28. Closure device according to claim 27, d a d u r c h g e k e n It is noted that the folding strips (346, 348) of each edge strip (317) respectively have a recess (349 or 350) open at the bottom, into which in the folded position the folding strips (346, 348) each engage a guide projection (395 or 396) can, but in the unfolded guide position of the hinged strips (346, 348) from the guide projection (395 or 396) are in each case not enforced. 29. Closure device according to claim 28, d a d u r c h g e k e n n z e i c h n e t that the length and the transverse dimension measured in the width direction of the Recesses (349, 350) per hinged strip (346 or 348) are chosen such that with guide projections engaging in the recesses (349, 350) of the hinged strips (346, 348) (395 or 396) the end strip (329) along the length of the recesses along the edge strips (317) is movable relative to these and / or the folding strips (346, 348) from the Can be folded into their unfolded guide position or vice versa, especially at the beginning of the pulling up of the closure device from the folded position can be folded out or before the closure device is completely lowered can be folded into their folded position. 30. Closure device according to one of claims 26-29, d a d u It is noted that the folding strips (346, 348) of each edge strip (317) with its lower end in the lowered state of the closure device extend beyond the trailing edge (329) and approximately to its lower edge. 31. Closure device according to one of claims 28-30, d a d u It is noted that the recesses (349, 350) of the hinged strips (346 or 348) designed as pronounced vertical slots running in the vertical direction are. 32. Closure device according to one of claims 27-31, d a d u It is noted that the guide projections (395, 396) on their free end with which they can be inserted into the recesses (349 or 350) of the hinged strips (346 or 348) can intervene, an arc-shaped, in particular approximately quarter-circle, Have engagement end that is transverse to the longitudinal direction of the Trailing edge (329) protrudes beyond the remaining part of the guide projection and during the folding movement of the respective folding strip (346, 348) of its unfolded Guide position into the folded position and vice versa the assigned recess (349 or 350) interspersed like a bow hinge.