SI9300391A - Louvre-type roller shutter - Google Patents

Abstract

The louvre-type roller shutter has at least one pull chain, whose links (2) are hinged together and connected with tiltable, lamella-like slats (1), and at least one adjustment chain, whose links (5) are hinged together and connected with the slats (1). The adjustment chain links (5) overlap the pull chain links (2), and preferably the slats (1) also at least partially overlap the pull chain links (2). As a result, there are no cracks in the shutter, the shutter has a very compact design and the slats show a uniform cross-section throughout.

Description

Useful as a blind

The invention relates to a thread for use as a blind, with at least one draw chain, whose joints are articulated interconnected, and with useful blind lamellae, and at least one gear chain, whose joints are articulated interconnected and the blind elements.

Such threads are known e.g. from EP-A-330 192, EP-A-189 091 and DE-A-34 37 346.

Multiple tasks should always be accomplished at the same time when making and installing coils. First of all, the threaded elements with their adapted draw and gear chain joints should cover the entire width of the thread with a constant cross-section as far as possible in order to ensure a secure and space-saving winding of the thread into the housing. Secondly, there should be as small a gap as possible between the individual building blocks and the locally fixed guides in which the coil is guided, in order to prevent the coil being locked in the closed state, eg. water or dust or insertion of burglary tools. Thirdly, the outer side of the closed thread should be as even and level as possible and thus have a pleasant appearance.

From this point of view, the known threads of the EP-A-330192 and DE-A-34 37 346 contain significant disadvantages.

A further task is to make the threads as compact and inexpensive as possible. This means that the drawbar, and especially the gear chain, should be positioned as far as possible along the edge of the thread and using as few elements as possible, and that the blinds should be machined as little as possible and consequently weakened in partial areas.

From this point of view, the known thread of the EP-A-189 091 is the disadvantage that either the couplings of the traction chain and the couplings are provided with either splitting blades or the blades must be provided with appropriate cutouts for the traction chain links or joints. gear elements.

It is an object of the invention to provide a thread, useful as a blind, which will be without the described drawbacks of the prior art.

According to the invention, this task is solved by the fact that the links of the gear chain overlap the links of the draw chain.

In order to further eliminate the problem described above, in the specific case e.g. between the louver elements and the adjacent links of the drawbar, there is a gap, according to the invention it can be provided that the louver elements overlap at least partially the links of the draw chain.

As is known from the prior art, the invention may be further designed to lie between the coupling joints between the drawbar links and the blinds in the area of the upper longitudinal edge of the blinds and / or to lie between the joints between the gear chain and the blinds in the area the lower longitudinal edge of the blinds.

According to a particularly preferred embodiment of the invention, this may be characterized in that the joints of the draw chain links in the closed state of the coil are aligned with the joints of the chain links. In this way, the thread in the housing is bent seamlessly and effortlessly.

According to the invention, it is preferable if one of the two articulated meshes of the links is of the draw chain or. gear chain links, elongated hole. With this embodiment, it is ensured that the blinds are placed after they are rolled down, ie. they have been closed, further moved to one another, so that, inter alia, it may be possible to lock the lamellar blinds with suitable devices, described later, and to protect against unwanted or violent opening.

As there is a constant desire to reduce the number of threaded building blocks used as blinds and to facilitate their installation, it may be envisaged, in a particularly preferred embodiment of the invention, that the joints between the drawbar links and / or the gear chain links are on the links traction chains or. Transmission chain links with visible, profiled guides through which the linkages of the traction chain and the linkages of the transmission chain are interconnected.

Profiled guides and joints have the great advantage that joints or axles are not required to form a joint, reducing the number of building blocks on the one hand and simplifying mounting on the one hand. The individual building blocks should be stuck in each other or. to push one another in the longitudinal direction of the blinds elements only through profiled guides, which can be constructed much like the known pen-groove system.

In particular, the simple connection of the louver elements with the drawbar links may be characterized in that the connecting joints between the louver elements and the drawbar links are arranged below each other approximately below the linkage joints between the respective drawbar links. A particular advantage of this embodiment is that the connection between the blinds and the drawbar links does not affect or interfere with the interconnections between the drawbar links, thus facilitating both the fabrication of individual components and the mounting of the thread.

Also, when using profiled guides as joints and joints, it is preferable that, as described above, the blinds continue to push against each other after closing to lock the laminated blinds. According to the embodiment of the invention, this is ensured by the fact that the coupling joints between the links of the traction chain and the links of the gear chain are displaced in the direction of movement of the coil.

According to the invention, it may be provided for the protection of the blind elements to be accidentally or intentionally twisted, that a groove is provided at the lower longitudinal edge of the blind element and / or links of the draw chain, which, in the closed state of the coil, cooperates with the bridge provided in the area of the upper longitudinal edge of the joints or that on the lower longitudinal edge of the blinds and / or links there are bridges which, in the closed state of the coil, interact in a close manner with the bridges of adjacent links of the draw chain or blinds. gear chain links.

The threads are usually guided by their lateral edges in locally stationary guiding profiles which are mounted on the openings to be closed.

According to the invention, it may be provided for this purpose that a projection is provided on the links of the traction chain through which the traction links in the installed state are guided in locally stationary guiding profiles.

The problem that occurs especially when replacing old coils with new coils is that the new coils do not fit the existing locally stationary guide profiles because they are either too wide or have an oversized slot in the guide profiles. In order to solve this problem, it is proposed according to the invention that sliding elements are arranged on projections, the thickness of which is adapted to the groove width of locally stationary profiles.

The problem with the installation of coils, especially in very wide openings, such as. the window displays are that the blinds can roll due to their own weight, which no longer guarantees the safe operation of the coil. Furthermore, especially for wide wall openings, the resisting force of the blinds is so small that only very little burglar protection is given.

In order to solve this problem, it is proposed according to the invention that the links of the traction chain extend over the entire width of the thread. With the drawbar links, the so-called a basic coil, which can be designed to suit the desired strength requirements and in which the blinds can be slotted along their entire length, thus solving both the problem of unwanted bending of the blinds and the low bounce resistance.

In particular, in order to provide a sufficient view through openings of openings for the full length of the stretch of the drawbar link with the open blind elements, it may be envisaged that the drawbar linkages comprise boundary bores. The width of the bridges and the holes between the bridges can be designed to suit each requirement.

According to another embodiment of the invention, it may be contemplated for the solution of the aforementioned task that the links of the traction chain consist of longitudinally threaded members of the extending profile bars interconnected with the bridges. The advantage of this is that the profile bars can be made as a semi-finished product of any length, if necessary cut into approximately the appropriate width of the thread and can be connected by any number of bridges of the desired width, so that, given the width threads, and given the strength of the drawbar joints, which is determined by the shape and number of bridges, greater flexibility is given.

As mentioned above, it is desirable if the entire cross-section of the threaded elements is as constant as possible over the entire width of the thread. In this case, it is necessary that the total total cross-section of the links of the draw chain and the gear chain links in the closed state of the coil essentially corresponds to the cross-section of the coil elements.

According to the invention, the coil can be designed in such a way that the drawbar joints are provided with spaces in which, in the closed state of the coil, the coupling joints of the drawbar links and, in the case of the slide chain, are received. This does not cause any dimensioning problems in the design of the linkage joints and the links of the draw chain, since they do not interfere with each other.

For profiled joints, it is preferable that the interconnected parts are protected against displacement relative to one another to ensure smooth operation of the coil.

In addition, according to an embodiment of the invention, it may be provided that a profile is provided in the profiled design of the joints on the first part, and on the second part, an opening which can be folded into the notch. This embodiment generally provides not only a safe operation of the coil but also simplified mounting, since these parts can move more towards each other after further assembly.

In order to resolve the louver flow, the embodiment of the invention may provide that an angular portion may be provided on the uppermost louver element or the uppermost louver chain link, which may cooperate with a hooked, locally stationary part.

According to a preferred embodiment of the invention, it may be provided that the hook portion at its lower end comprises a hook to comprise a vertical, downward opening having at its upper end a through opening for the angular portion, so that the opening through it is at least partially covered by a spring strips, and that it extends from the hook down to the thread of the inclined spring strips that form an extension of the gap.

According to another preferred embodiment, the hook portion may be provided in a spring-like design and comprise a horizontally extending slot in its upper region, that the lower edge of the slot is inclined upward, the deflector facing away, and that the upper edge of the slot is inclined downwards, from the thread away to the protruding riders projecting over the deflector, this design being distinguished by its particular ease.

As mentioned above, the shape of the threaded members as well as the design of the chain links have a significant influence on the diameter of the winding of the thread when it is threaded into the housing. However, the winding diameter can be influenced not only by the structural design of the threaded elements themselves, but also by the shape of the shaft, which is supported by the housing. According to a preferred embodiment of the invention, in order to accomplish this task, it may be provided that a winding shaft is provided which, from the axis of rotation of the shaft, the fog outer radius is smaller in one area than the rest of the shaft circumference.

In this case, the axis of rotation closest to the top, or the first lamella when the coil is wound. The design of the shaft according to the invention avoids from the prior art a known protuberance that occurs when the first threaded element is bent forward over the first threaded layer, since in the invention the diameter of the winding of the thread increases continuously and not abruptly when the first lamellae and further bends over, for the first lamella lies more radially within.

According to a preferred embodiment of the invention, it can be assumed that the shaft comprises approximately a polygonal cross-section and that one side of the polygon lies closer to the axis of rotation of the shaft than the other sides of the polygon. These measures further smooth the outer contour of the coiled section of the thread.

According to a further preferred embodiment of the invention, it may be provided that on the shaft there are projecting outward bridges whose inner surfaces lie on the circumference of a circle whose center coincides with the rotational axis of the shaft. In this way, the drive motor can be mounted in the shaft extremely, so that the shaft moves about the motor axis of rotation during the engine operation.

According to another preferred embodiment, in which it is provided that the shaft extends at least partially through the shaft from the projecting bridges of certain internal diameters, the center of which lies directly relative to the axis of rotation of the shaft, a larger motor can also be installed in the shaft, the shaft bearing being disposed outwards. in the shaft or. according to the bearing of the engine.

Particularly easy attachment of the blade to the shaft is possible when a groove is provided in the shaft in the longitudinal direction of the shaft, into which a bolt or similar can be accommodated to attach the thread to the shaft.

According to the invention, it can be assumed that it is the uppermost or upper. the first louvre of the coil via a spring bar or the like connected to a shaft, which has the advantage that the first louvre need not be attached directly to the shaft.

According to a further preferred embodiment of the invention, it may be provided that a spring bar with a bolt or the like is secured in the groove of the shaft and the shaft is wrapped once, this embodiment having the advantage that in a completely lowered condition the coils in the housing receive and thus the invisible length of the coil. it is not necessary to design with expensive or space-occupying slats.

Further features and advantages are given in the sub-claims and further description of embodiments of the invention, with reference to the drawings in which FIG. 1 is a perspective view and cross-sectional view of the invention, FIG. 2 is a section through a threaded element along line II-II of FIG. 3, in which the invisible part of the blind element is arranged in a dotted line because of the cross section; FIG. 3 is a cross-section through a threaded element along the line ΙΠ-ΙΠ of FIG. 2, FIG. 4 is a left view of the threaded element in a slightly modified embodiment with respect to FIG. 3, FIG. 5 is a section through a threaded element along line V-V of FIG. 2, FIG. 6 is a section through a threaded element along line VI-VI of FIG. 2, FIG. 7 is a section through a threaded element along the line νΠ-VH of FIG. 2, FIG. 8 shows a part of a coil according to the invention in the position of a partially open blind, FIG. 9 shows a part of the thread in the position of a fully open blind, but without a gear chain, FIG. 10 and 11 are views from the left on the thread of FIG. 2, showing two different embodiments of the sliding chain links, FIG. 12 is also a left view of the thread of FIG. 2 with a sliding cap, FIG. 13 to 34 are embodiments of the coils according to the invention, in which the coupling joints between the individual building blocks are designed with profiled guides, wherein: FIG. 13 is a cross-section through a non-tilting blind element, FIG. 14 is a cross-sectional view of a tilting tilting element, FIG. 15 is a cross-section through a threaded element in the gear chain area, FIG. 16 is a front view of a portion of a thread in a fully open blind position; FIG. 17 is a cross-section through a thread along line A-B of FIG. 16, FIG. 18 shows the possibility of rotating the individual threaded elements against each other and thus winding, FIG. 19 shows the possibility of moving the individual threaded elements to one another and securing the twisting threaded elements against twisting; FIG. Fig. 20 is a functional sketch of the coil in the open position; 21 shows a further embodiment of the coil according to the invention in partial cross-section and perspective view; FIG. 22 is an enlarged view of a portion of the coil of FIG. 21 in perspective view, FIG. 23 to 28 different embodiments of the drawbar linkage, gear chain linkage, sliding elements and swinging shutter elements, FIG. 29 is a further embodiment of the invention, FIG. 30 and 31 cross section through the thread of FIG. 29 in closed and open position, FIG. 32 is a cross-section through a thread in a closed and locked position; FIG. 33 is a cross-section through a thread in the region of the gear chain, FIG. 34 is a cross-section through a thread in the region of a sliding chain in a locally fixed guide, FIG. 35, the preparation for triggering the blind window, FIG. 36 the preparation of FIG. 35 in perspective, FIG. 37 and 38 a further embodiment of the preparation for triggering the blind window in perspective and side view, FIG. 39 is a third embodiment of a preparation for triggering a blind curtain in perspective, FIG. 40 and 41 a locking device for preventing the lateral movement of the links of the draw chain and the louver elements against each other in cross-section and perspective view; FIG. 42 shows the possibility of winding a coil according to the invention onto a shaft with a polygonal cross-section, FIG. 43 and 44 in the form of improved shafts according to the invention, on which the coil is wound.

In FIG. 1 is a perspective view of a part of a threaded element, which consists of a blind of a usable lamellar blind element 1, a link 2 of a draw chain and a link 5 of a gear chain. As can be seen in particular from FIG. 2, comprises a link of the draw chain at one end of the fork projection 16, and at the other end, an attachment 17 bearing the articulated eyes of the link of the draw chain. The draw chain member 2 further extends a projecting projection 6 in the longitudinal direction of the threaded element, which in the present embodiment extends through the gear chain under article 5 and to locally stationary thread guides not shown. The louver element 1 comprises a lug 30 and a gear link member 35 lugs, both of which extend beyond the lug 2. This avoids any slit extending over the entire threaded element.

Article 2 of the traction chain and Article 5 of the gear chain comprise cross-sections corresponding to each other in the position shown in FIG. 1, thus essentially a cross-sectional view of the shutter element 1. This produces a continuous, continuous cross-section of the threaded element, which offers both the advantage of winding the thread on the shaft in the housing and a smooth, closed surface and thus an optically suitable appearance.

In FIG. 3 is a cross-sectional view of how the slide chain link 3 is inserted over the projection 6 of the link chain link 2 and connected to it via a swallow tail-shaped guide. Instead of a link 3 of the sliding chain, sliding caps can also be inserted through the projection 6. Slide Chain 3 sliding caps have the task of adjusting the coil to any arbitrary width of locally fixed, e.g. on the plaster window opening of the provided groove to ensure good slip and sound attenuation of the thread. The lateral movement of parts of the sliding chain or sliding strokes can be prevented by e.g. grooves.

In FIG. 3, the slider chain presented 3 has a slit 26 at one end and a nozzle 24 at the other end that can be inserted into the slit 26 of the next slider and connected to it by a bolt 24.

In the same way, the links 2 of the draw chain and the links 5 of the gear chain with projections 8 and 16 have limited slots, as well as the attachments 9 and 17, so that they can be connected to the adjacent links 5 or 5 by means of the bolts 7, 19. Article 2 of the draw chain.

In order to prevent inadvertent or violent swinging, ie. opening the louver elements 1 and 5 of the gear chain, comprise louver elements 1 on its lower longitudinal edge a groove 15 which can cooperate with the provided bridge 14 at the upper longitudinal edge of the louver elements 14. move the coils to move one another. To enable this, the drawbar linkage and the gearbox linkage, as well as the slider chain linkage provided on their bridges 17, 9 and 9, respectively. 24 as elongated holes of the bore hole 20, 21 and 22 into which the bolts 7, 19 and 16 are movable, respectively. 25. It is thus possible that the traction chain, gear chain and optionally the sliding chain can be moved together, and consequently the louver elements 1 may be jointly adjustable and lockable in a pen / groove manner.

In order to simplify the assembly of the sliding chain members 3, the elongated hole 22 in the sliding chain member 3 may comprise a slot 23 into which the bolt 25 can be easily inserted.

In order to easily open the movable shutter elements 1 in the way of the blinds, the invention provides that the links 5 of the gear chain in the region of its lower end are articulated through the socket 12 in the bore 13 in the link 5, as well as in the bore 13 ' in the venetian element 1. In the area of its upper longitudinal edge, the venetian element is pivotally connected to the articulation pin 7 of the drawbar link.

As can be seen from FIG. 5, 6, and in particular 7, the bolts 12 and bores 13,13 'are offset by a distance A from the plane in which the threaded bolts 7 and the elongated holes 21 lie in the closed position of the thread. If so, as explained later below, the gear chain is opened when the louver elements 1 are opened and the coil is lowered further, the louver elements 1 with the just described distance A between the bolt 12 and the bolt 7 swivel upwards without difficulty.

Trigger or the derivation of the venetian movement of the venetian elements 1 can be done in any other way except by the arrangement just described.

As can be seen from FIG. 3 comprises a slide chain member 3 of bore 27 corresponding to bore 13 of slide chain member 5. This bore 27, although in fact having no function at all, may be available at the time when the link 5 of the gear chain and the link 3 of the sliding chain have the same cross-section, i. e.g. were made using the same extrusion tool. If the links 3 of the sliding chain are made with another tool, the bore 27 may of course be omitted. In this case, larger edges may also be provided at the outer edges of the 28 links 3 of the sliding chain to allow better sliding of the links of the 3 sliding chains in locally stationary guides.

Among other things, in FIG. 5, the presented link 2 of the traction chain can be used with the same cross-section, but by releasing the projection 6, it can also be applied to the traction chain in the central area of the coil to give the coil more strength. In this case, care must be taken to ensure that the cross-section of the drawbar link 2 and the remaining cross-section (as in overlay 30) of the blinds element 1 is selected in such a way that the blinds element in the area is reduced as little as possible.

In FIG. 8 and 9 show how the coil according to the invention can be moved as a blind, with FIG. 9 gear chain omitted.

In FIG. 10 and 11 are the links 3 and 4 of the sliding chain of FIG. 3 and 4 are presented connected in a sliding chain, with the elongated hole 22 of the sliding chain 3 comprising a slit 23, in contrast, the elongated hole 22 of the sliding chain member 4 is closed.

In FIG. 10 to 12, the dashed lines illustrate the locally fixed guide groove 71, with B denoted wider and C a narrower guide groove 71.

In FIG. 12 is an embodiment in which the thrust element is mounted as a cap 33 on the projection 6 of the link 2 of the draw chain. In order to adjust the thread to different widths B or. In the grooves, the tip 34 of the sliding cap 33 can either be removed as shown in FIG. 12 or not, as shown in FIG. 12 to adjust the coil to a wider guide groove B.

As can be seen in particular from FIG. 1, 2 as well as 6 and 7, the projection 6 has a wider width than the articulation 2 of the draw chain, thereby creating spaces 10 and 11. The joints 8, 9 can be easily accommodated in these spaces 10 and 11; 26, 24 links of the gear and sliding chain, which, on the one hand, does not have any dimensioning problems in the design and arrangement of the joints, since each threaded element in the area should have the same common cross-section as the blind element 1, and on the other hand bolts 19, 25 and pinions 3, 5 of the gear and sliding chain aligned with the hinged or. the tie-rod 7 of the link 2 of the traction chain with each other and with the blinds elements 1, thus defining one common pivot axis for all links of the chain.

The following describes embodiments of the invention in which the joints between the individual links of the chain and / or chain are used with the bolts in corresponding holes. the connecting joints between the links of the traction chain and the swinging blinds extending in the longitudinal direction of the threaded members.

As shown in FIG. 13 and 14, the joints between the links 2 of the draw chain are, on the one hand, formed essentially like a letter U-shaped grooves 40 with an inwardly folded arm 41, and, on the other, with bridges which, at their free ends, comprise a hook attachment 43 which can be received in groove 40. The connection of the bridge 42 to the groove 41 may be followed by e.g. so that the bridge 42 of the link 2 of the draw chain in the longitudinal direction of the blind element is pushed into the groove 40 of the adjacent link 2 of the draw chain. The twistiness of this kind of articulated joint is represented e.g. in FIG. 18.

It can be seen that it is easy to replace the conventional hinge and bore holes with a connection that requires fewer parts on the one hand and is easier and faster to install on the other.

In essentially the same way, the linkage of the gear chain members 5, which is presented in FIG. 15, the groove 40 and the bridge 42 being arranged on the links 5 of the gear chain.

By easily attaching the articulation of the linkage 5 members 5 to the threaded member, the draw chain members 2, which are covered by the linkage chain members 5, comprise in the area of grooves 40 and bridges 42 of spaces 10 and 11, which can be easily problems installing joint connections. This arrangement also reassures that the hinged link between the links 5 of the gear chain is aligned with the hinged links between the links 2 of the tow chain so that the thread in the housing is easily secured.

As can be seen from FIG. 13 and 14, the blinds 1 are also articulated to the drawbar links 2 through the profiled guides. The joints are, on the one hand, designed in the same way as the joints between the links 2 of the draw chain and the links 5 of the gear chain with grooves with inwardly folded arms 45, 46 arranged on the links 2 of the draw chain, as well as bridges 47 with hook attachments 48, which are provided at the upper longitudinal edges of the swinging shutter elements 1. How can the swinging of the shuttering elements 1 be carried out on the links 2 of the draw chain is illustrated in more detail e.g. in FIG. 20.

Nassi. 14 it is further shown that the rotary louver elements 1 at their lower longitudinal edge comprise in the longitudinal direction of the threaded element a groove 49 to which is provided a bridge 50 at the upper longitudinal edge of the adjacent Article 2 of the towing chain. In this way, the louver elements 1 can be locked in the already described manner in the form of a pen / groove system against unintentional or forced opening when the links 2 of the traction chain are pushed completely apart.

To allow this, the grooves 40 of the joints between the individual links 2 of the draw chain and the links of the gear chain are made so deep that the bridges 42 with hook nuts 43 of the adjacent links 2 of the draw chain and the links 5 of the gear chain are moved in grooves 40 in the direction of movement of the thread , ie. transverse to the longitudinal course of the threaded members.

For locking the gear chain links 5, the lower and longitudinal edges thereof are formed by grooves 51 and at their upper longitudinal edge by bridges 52, so that the linkages 5 are also lockable in the form of a pen / groove connection.

In FIG. 13 shows an embodiment of the threaded members 1 which are not attached to the draw chain 2 by means of a blind. Such threaded elements can typically be used as the uppermost threaded threaded elements not designed to be used as a blind. In order to connect the non-delusional threaded elements 1 to the draw chain members 2 rigidly and articulately, the threaded members 1 comprise a nozzle 53 in the region of their lower longitudinal edge, and a nozzle 54 adapted so as to form a longitudinal thread in the longitudinal direction of the threaded element here a guide which prevents the threaded member 1 from being released or swung from the link 2 of the towing chain.

In FIG. 14 shows the previously described thread used as a blind.

As described above, strength or safety problems are often encountered in the coils due to the insufficient resistance of the coil. In order to solve this problem, it is proposed according to the invention that the links of the draw chain extend along the entire width of the thread. An example of this is presented in FIG. 16 and 17, however, in which the tow chain members 2 are presented only partially in their central region, i. excluding those areas, there are 5 gear chains in the aters. As can be seen in FIG. 16 and in cross section also in FIG. 14, the draw chain members 55 comprise recesses 55, which are bounded by bridges 56. In this way, despite the very high stability of the draw chain articles 2, the entire thread is provided with sufficient clearance through the thread for open blind elements 1.

In FIG. 18 shows how threaded elements with rigidly fastened and unusable threaded elements can be rotated. In the same way, articles 2 of the draw chain with the pivotally mounted blinds 1 and the adapted links 5 of the gear chain can be rotated against each other.

In FIG. 19 shows that the sliding shutter elements 1 are locked against the twist through the groove 49 and the pen 50 when the drawbar links 2 are pushed completely side by side.

A substantial advantage, the embodiments described in connection with FIG. 16, with the entire width of the thread of the extending link of the draw chain in conjunction with the profiled guides as connecting joints, is provided that along the whole width of the thread there is a continuous connection of the links of the draw chain with each other and with the blinds 1, which is as easy to manufacture as also for assembly.

In order to make a connection between the gear chain members 5 and the louver elements 1, a recesses 57 are provided in the extension of the groove 41 at the lower longitudinal edge of the gear chain members 5, which is arranged in the same manner a bore 58 in the groove extension 49 on the swivel shutter element 1. In pin 57 and 58, pin 59 is inserted and pressed into one of the two tap holes 57, 58 to prevent axial movement of pin 59, thereby forming pin 59 to form a linkage between the links 5 of the gear chain and the shutter elements 1 .

In FIG. 21 to 28 illustrate embodiments of the invention that form further designs in FIG. 13 to 20 of the present invention. The essential difference from the embodiment described above is that, although the draw chain joints extend over the entire width of the thread, they are no longer made in one piece, but are made up of several parts, namely, from the upper profile bar 60, which carries the articulated bridge 42 with a hook attachment 43 as well as a groove 44 for connection between the blind element 1, the lower profile bar 61, which carries a profiled groove 40 for connection with the bridge 42 adjacent, the upper profile bar 60, as well as one or more center bridges 62 and edge bridges 63 at both ends of the drawbar links, with the center bridges 62 and the edge bridges 63 interconnecting the upper 60 and lower 61 profile bars.

The connection of the center bridge 62 and the edge bridge 63 to the upper 60 and lower profile bars can be followed in a variety of ways. In FIG. 23, 24 and 25 are e.g. embodiments presented. In the embodiment shown in FIG. 23, comprise upper profile bars 60 as T-shaped grooves 64 and lower profile bars 61 as T-shaped grooves 65 facing each other. The center bridges comprise, at their upper and lower longitudinal edges, the properly shaped T-shaped bridges, which are taken as T-shaped grooves 64, 65, thereby establishing a solid connection between the upper 60 and lower 61 profile bars. The center bridges 62 may also, e.g. by sticking ah flush secure against displacement.

In FIG. 24 shows a threaded element which, depending on the articulated links between the links 2 of the traction chain, is interconnected with each other. with blinds elements 1 substantially designed as in FIG. 23 shows a threaded member, however, where the center bridge 62 is welded here with the upper 60 and lower 61 profile bars as shown in 66 and 67.

In FIG. 25, the embodiment shown corresponds essentially to the one shown in FIG. 23, however, wherein the T-shaped grooves 64 and 65 are replaced by the T-shaped latching links 68 and 69.

In order to protect the louver elements 1 against unintentional twisting, in the embodiments of FIG. 23 to 25, a projecting upwardly projecting bridge 50 projecting upwards on the upper profile rod 60, which forms a upwardly open groove with the bridge 42, in which, when the thread is assembled, the arm of the groove 40 of the joint between the links of the drawbar chain 2 and on the other hand louver elements 1 so that the louver elements 1 are protected against twisting.

The edge bridges 63 comprise substantially the same profile as the center bridges 62, are connected as such to the upper 60 and lower 61 profile bars and extend from the lateral edge of the upper 60 and lower 61 profile bars to locally stationary guide profiles 71, one of which is shown on FIG. 21 and 22. Care must be taken to ensure that the upper and lower profile rods 60 and the lower profile bars and the edge bridges 63 have a sufficiently long and firm connection. In this case, the edge bridges 63, as described above, may include empty joint joint spaces between the members 5 blinds chains.

In FIG. 26 shows how the gear chain pin 5 overlaps the projection 70 of the drawbridge 63 of the drawbar link 2. Depending on the shape of the edge bridge 63 or. the projections 70 and the links 5 of the gear chain may also be provided with blank spaces here at the edge bridges 63 so that the hinge joints can be easily inserted between the links 5 of the gear chain.

In FIG. 27 is an embodiment of the invention in which the sliding chain member 3 is welded to the protrusion 70 of the edge bridge 63. In order to use as few different profile shapes as possible in the thread according to the invention, e.g. it is also envisaged that the same profiles be used for the links 5 of the gear chain and the 3 of the sliding chain.

Blinds 1 in FIG. 24 as well as the gear chain members 5 of FIG. 26 and articulations 3 of the sliding chain in FIG. 27 are designed as rolling profiles. In order that the louver elements 1 and the links 5 of the gear chain can be interconnected via the joint pins 76, FIG. 24, a bolted shell 72 in the blind element 1 and FIG. 26 a welded shell 73 in which an articulated pin 76 can be received.

In FIG. 28 is a substantially embodiment of FIG. 23 is a suitable connection between the protrusion 70 of the edge bridge 63 as well as the slide chain link 3.

In FIG. 29 to 34 illustrate an embodiment of the invention with profiled tie-down joints but not through running links 2 of the draw chain. The thread comprises the center links 2 'of the draw chain and the lateral links 2' of the draw chain, which have the same profile shape and comprise a groove 40 at its lower longitudinal edge and a bridge 42 with a hook attachment 43 at its upper longitudinal edge to form a joint between individual links 2 ', 2' of the draw chain. A groove 44 is again provided below the bridge 42, in which a blind element 1 can be hung with a bridge 47 comprising a hook nozzle 48. The edge members 2 ”of the towing chain also include empty spaces 10 and 11 in which the joints between Article 5 of the gear chain when the coil is not open by means of a blind.

Blinds 1 also comprise, in those areas in which the links 2 ', 2' of the traction chain are located, at their lower longitudinal edges, blank spaces 74 and 75, in which the joints 40, 42 of the members 2 'and 2' of the traction chain are located in the closed position of the coil.

The gear chain members 5 are connected to each other in the manner described above by means of bridges 42 at their upper longitudinal edges and grooves 40 at their lower longitudinal edges. For the connection of the links 5 of the gear chain to the louver elements 1, holes 5 are again provided in the louver elements 5, and in the louver elements 1 there are holes 13 'into which the bolt or rivet 76 is pushed and, if appropriate, to the hole 13' is secured ( a) against displacement.

In order to protect the louver elements 1 from being accidentally opened, they comprise, in their lower longitudinal edge, a recess 15 which can be pushed over the upper longitudinal edge 14 of the louver elements 1 when the coil is fully lowered.

In order to be threaded with FIG. 29 adapted to the different groove widths of the locally fixed guide grooves 71, sliding elements 33 are provided which are firmly connected to the edge members 2 ”of the towing chain. In addition, the slide elements 33, as seen in FIG. 29 and 34, at their upper longitudinal edge, a hooked bridge 78, which can be hung in a groove 44 on the links 2 ”of the draw chain. The sliding elements 33 further extend, at some distance from their lower longitudinal edge, the nose 79, by which they are suspended on the bridge 80 on the links 2 ”of the draw chain.

In FIG. 32 and 34 show how the threaded elements 77 are designed, which are used as the uppermost threaded threaded elements and consequently cannot be used as blinds. It can be seen that the cross-section of the threaded elements 77 essentially corresponds to the entire cross-section of the blinds elements 1 and. of the gear chain members 5 and of the slide elements 33 in conjunction with the tow chains 2 'and 2'.

All parts of the described embodiments of the coil according to the invention may be made of either plastic or metal materials such as e.g. aluminum alloys and are either extruded profiles or, in the case of metallic materials, rolled sections, using different materials for different parts of the coils. The choice of material depends primarily on the cost of production and the strength requirements of the individual parts. It is priced, for example. very convenient to make plastic profiles, but due to their lack of weather resistance, ie. their resistance to heat, cold, UV radiation and the like, from metal profiles made profiles for worse.

It should also be noted that, of course, the individual components of all described embodiments of the coil according to the invention are interchanged without further interruption as long as the function of the individual parts is maintained. Thus, e.g. for a single coil, use the bolts so adopted through the holes, e.g. to link the drawbar links 2 to the blinds 1, as well as profiled guides, e.g. to link the links of the 5 gears, including any other possible combination.

In FIG. 35 to 38 present the preparations for initiating the blind movement. Both devices consist essentially of on the first blind element 1 or on this modified article 5 of the gear chain of a spaced, movable, approximately angular part 81, hereinafter referred to as a threaded hook, as well as locally fixed, in the region of the upper edge of the opening which it is necessary to close the arranged hook part 82, which is designed spring or spring attached and hereinafter referred to as a spring hook.

The threaded hook is so designed and deepened in the threaded element that, either by force of gravity or spring support, it pops out of the threaded element as soon as it has left the threaded housing. The threaded hook 81 may then fall outward by about 30 °.

In FIG. 35 and 36 show an embodiment of a spring hook 82 consists of a hook portion 83 which is spring-mounted on a cantilever 88. The hook portion 83 comprises, at its lower end, a hook 84, as well as a slot open in the downward direction of the thread 85. At its end opposite the hook 84, the slot 85 opens into a rectangular through hole 86.

On the side of the hook portion 83, facing the thread, spring bands are attached to both sides of the slot 85, extending downwards and obliquely to the thread from the hooks 84. The free ends of the 122 spring strips 87 are rounded to avoid damaging or scattering the coils when they engage. At their upper ends, the spring straps 87 extend to the area of the rectangular through hole 86 and prevent the threaded hook 81 from engaging with the spring hook 82 when the thread is lowered.

As described above, the threaded hook 81 drops due to its own weight or with the spring pressed out until it has left the non-shown threaded housing. In the following, the threaded hook 81 is pressed again in the direction of the thread when lowering the thread, with the upper ends 89 of the spring strips 87, then the hook portion 83 and finally the lower ends 122 of the spring straps until it drops again below the ends 122.

If it is to be opened now in the mode of blinds, it must subsequently be retracted upwards, whereby, like a letter T, a threaded hook 81 with its transverse bracket 90 slides outwardly through the lower ends of the spring strips 87 until it slides upwards through the spring strips 87 until it has not come past hook 84. If it now drops down again, it hangs the threaded hook 81 with its transverse bracket 90 in the hook 84, and locks the louver elements 1 through the gear chain and opens when the thread continues to lower.

If the coil is retracted completely upwards, then the coil hook 81 slides through the slot 85 upwards, the transverse carrier 90 passes through the through hole 86 and slides along the upper ends 89 of the spring strips 87 upwards, bending them in the direction of the coil until they are allowed by the threaded hook 81 and can be moved outward again.

When the coil is pulled up, the spring hook 82 may be pivoted inwardly to the window opening or the like, i.e. in FIG. 35 in a clockwise direction to the left, and rests on the upper edge of the wall opening.

In order to offset the lateral play of the coil and thus the threaded hook 81, it may be provided that the hook portion 83 is slightly laterally movable and can thus be adapted to the lateral position of the threaded hook 81.

In FIG. 37 and 38, a further substantially simplified embodiment of a spring hook 82 consisting of only one, e.g. made of spring steel cut-out. Spring hook according to FIG. 37 and 38 consist of the fastening part 91 and the spring part 92, which are separated from the fastening part 91 by the slots 93 and 94, bounded by bridges 95 and 96. The spring part 92 consists of the upper spring part 92 'and the lower spring portion 92 ", which are separated from each other by a transverse slot 97. At its lower end, it comprises a spring portion 92 "of a hook 102. At its upper end, a lower spring 92" upstream of the coil is turned away by a deflector 98 which restricts the transverse slot 97 at its lower side, the upper the spring portion 92 'comprises at its lower end downstream of the thread a router 99 that restricts the transverse slot 97 on its upper side and which protrudes over the upper edge of the deflector 98. At its upper end, the spring portion 92' further comprises the thread away downstream inlet portion 100.

If the coil is lowered, then in the present embodiment, the L-shaped coil hook 81 first slides down the router 100 downwards, then downwardly over the upper spring portion 92 'until it drops slightly, then down the deflector 91 and from the lower spring portion 92 'downwards until under the hook 102 it extends outwards. If the louver opening is retracted upwards by the method of blinds, then the threaded hook 81 slides along the hook 102 outwards and outwards, with the lower spring portion 92 "flexed in the direction of the thread until it is locked into the hook when lowering the thread. 102. The thread can now be opened, as already described, in the form of a blind.

If the coil is then pulled completely upwards again, it then slides the threaded hook 81 up until it is pressed again through the deflector 98 and under the router 89 with the slot 97, so that the spring hook 82 can pass.

In order to ensure that the router 99 is adequately covered by the deflector 98, a crease 101 may be provided at the fastening part 91, thereby shortening the fastening portion 91. The mounting part 91 may further comprise holes 103 to allow it to be screwed e.g. to the locally fixed guide profile 71 for the thread. The wrinkle 101 can also be used as a probe nose to attach to the underside of the housing in which the coil is threaded, which greatly facilitates the measurement work during mounting.

In FIG. 39 is an embodiment of a spring hook 82, which according to the embodiment shown in FIG. 37 and 38, substantially simplified. Spring hook according to FIG. 39 also consists of a fastening part 91 and a spring portion 92, with a hook 10 provided at the lower end of the spring portion 92. A spring hook is arranged in a housing 123 of a thread or the like, whose front, free side 124 is folded and with its lower longitudinal the edges protrude outwards obliquely downwards and away from the wall opening.

In FIG. 39 is a further illustrated locally stationary guide rail 71, which may be designed as it is known. The spring hook 82 again comprises bores 103 through which it can be screwed or nailed to the housing 123 of the thread or the extension of the guide rail 71. The spring hook 82 is disposed in the bent region of the front wall 124 of the housing 123 of the thread and with its upper longitudinal edge 125, but is only slightly distant from it. This slides the threaded hook 81 first down the front wall 124 and then directly down the threaded side of the spring hook 82 down without gripping the hook 102 when the thread is lowered.

If the coil is raised again after complete lowering, it will slide the coil hook 81 with its transverse carrier 90 over the hook 102, with the spring portion 92 with the hook 102 bent to the coil until the transverse carrier 90 has crossed the hook 102. lower the threaded hook 81 at the hook 81 and open the threaded blinds.

However, if the coil is pulled upwards, then the bent portion of the front wall 124 of the coil housing 123 assumes the function of a router and the coil hook 81 continues to be dislodged in the forward lifting of the coil, with the spring portion 92 of the spring hook 82 moving away in a springwise manner. the transverse bracket 90 of the threaded hook 81 does not cross the spring hook 82 and does not retract the spring back outward in the direction of the front wall 124.

In FIG. 39, not only does the spring hook 82 present, in conjunction with the folded front wall 124 of the housing 123, of the coil, not only the advantage that the spring hook 82 is very easily constructed, but also the advantage that the spring hook 82 is completely housed in the housing 123 of the coil, which not only gives the optical benefits, but also protection against damage to the spring hook 82.

For the sake of better presentation, FIG. 39, a portion of the front wall 124 is shown in cross-section, the outer contour of the front wall 124 being shown with a dotted line for a better presentation of the design.

It is understood that in FIG. 35 to 39 of the presented embodiment of the spring hook and thread hook are not limited to any particular thread design, but can be used on any arbitrary thread.

Since in FIG. 37 to 39, the threaded hook 81 shown is very flat and does not necessarily have to be taken into the recess in the blind element 1, but may also be externally applied directly to the first blind element 1.

In FIG. 40 and 41 show how the lateral movement of the individual components against each other can be prevented by the articulated connection of the individual components via profiled guides. In this case, for example, a cutout 105 is provided on the bridge 42 of the link 2 of the draw chain, and on the arm 106 of the groove 40 there is a double cover 107 with two notches 107, 108 which can be folded into the cutout 105 in the composite state of the joint 40, 42. that the cutout is provided on one or both of the arms 41 or 106 of the groove 40, with the projecting latch being folded into the cutout 42. Furthermore, this form of protection can be applied not only to the links 2 of the draw chain but also to the link between the links 5 of the gear chain and the connection between the blinds 1 and the links 2 of the draw chain, as well as to the links 3, 4 or the link between the links 3, the sliding chains and the drawbar links 2.

In FIG. 42 shows an octagonal shaft on which the coil of the invention is wound, wherein it is seen that the coil is seamlessly wound with mutually aligned connecting rods 7,19 and 25 of the draw, gear and slide chains.

In FIG. 43, a shaft 111 is shown, on which a thread is completely wound. The shaft 111 comprises a rotary axis 112 and is mounted on a non-shown threaded housing via a non-shown bearing. The shaft 111 comprises an approximately polygonal cross-section with rounded sides and edges, the area 113 of the polygon having a smaller distance from the axis of rotation 112 of the shaft 111 than the remaining circumference of the polygon. In addition to this area 113, a groove is provided to accommodate the socket 114. Through this bolt 114, a spring belt 115 is attached to the shaft 111, which is wound about once about the shaft 111 and is screwed to its second end by the first or the top lamella 77 .

This first lamella rests approximately in the area 113 on the shaft 111, on which the latter has the smallest outer radius. The blade 77 is thereby displaced radially outward by approximately the amount of its thickness, so that no bullet is formed when the following blade is wound through the blade 77. With this extraordinary design or. The bearing 111 thus generates, in total, the outermost threaded circle 116 having its center in the axis of rotation 112 of the shaft 111, wherein the circumference of the coiled thread does not comprise any boom. The outermost threading diameter of the coil can thus be reduced by twice measuring the centrality in the state of the art of the present boom, which is ultimately reflected in the smaller construction of the coil housing.

The shaft 111 comprises in the embodiment shown in FIG. 43, projecting bridges 117 extending in the longitudinal direction of the shaft 111, with the longest inwardly displaced region 113 of the shaft 111 opposite the bridging 117. To the axis of rotation 112 of the facing surface of the bridges 117 lie on a circle 118, the center of which lies on the axis of rotation 112 of the shaft 111. The bridges 117 accept a non-shown shaft bearing or motor to drive the coil or the like.

In FIG. 44 illustrates a further embodiment of shaft 111, wherein the bridges 117 are compared with FIGS. 1 either shortened or even omitted so that a larger space can be created in the inner space of the shaft 111 into which a larger engine or the like can be accommodated. The center 119 of the circle 120, which can now be described in the shaft 111, lies directly relative to the rotary axis 112 of the shaft 111. To compensate for this, a motor receptacle 121 or a shaft pin is fitted in the rotary axis 112. The shaft 111 now runs out again and straightens the shaft so that an ideally small diameter 116 can be wound.

In the embodiment of FIG. 43 and 44, we referred to the polygonal shaft all the time. The invention also extends to circular circumferential shafts which are pivotally supported.

In summary, the invention can be presented as e.g. follows:

The blind used for the blinds comprises at least a draw chain whose members 2 are articulated to one another and to the swivel lamella blinds 1 and at least a gear chain whose links 5 are connected articulated to the blinds 1. Article 5 of the gear chain overlaps with Article 2 of the draw chain and, regularly, the blinds 1, at least partially overlap, of Article 5 of the gear chain. This avoids slots running through the thread, the thread is constructed very compactly, and the threaded elements consist of a constant cross-section throughout.

Claims (42)

1. A thread for use as a blind, with at least one draw chain, whose members 2 are articulated interconnected and with swivel, lamellar blind elements 1 and with at least one gear chain, whose members 5 are articulated interconnected and the blind elements 1, characterized by in that the links (5) of the gear chain overlap the links (2) of the towing chain. Coil according to claim 1, characterized in that the louver elements (1) at least partially overlap the links (2) of the draw chain. Coil according to claim 1 or 2, characterized in that the connecting joints (7) lie between the links (2) of the traction chain and the louver elements (1) in the area of the upper longitudinal edge of the louver elements (1). Coil according to one of Claims 1 to 3, characterized in that the connecting joints (12) lie between the links (5) of the gear chain and the louver elements (1) in the area of the lower longitudinal edge of the louver elements (1). Coil according to one of Claims 1 to 4, characterized in that the connecting joints (12) of the links (5) of the gear chain comprise, with the shutter elements (1), in the closed state of the coil, a distance (A) from the plane on which the bindings lie. joints (7; 44 ;, 47) of louver elements (1) with drawbar links (2). Coil according to one of Claims 1 to 5, characterized in that the joints (7; 40, 42) of the draw chain (2) in the closed state of the coil are aligned with the joints (19; 40,42) of the gears (5) chains. Thread according to one of Claims 1 to 6, characterized in that the connecting joints (7) of the blinds elements (1) with the links (2) of the traction chain are aligned with the joints (7) of the links (2) of the traction chain. Coil according to one of Claims 1 to 7, characterized in that one of the two hinged eyes (20,21) of the draw chain links (2) is respectively. the linkage (5) of the gear chain is an elongated hole. Thread according to one of Claims 1 to 7, characterized in that the joints between the links (2) of the draw chain and / or the links (5) of the gear chain are designed with the links (2) of the draw chain or. gear chain links (5) provided with profiled, profiled guides (40, 42) through which linkage links (2) of the traction chain (2) are interconnected. gear chain links (5). Thread according to one of Claims 1 to 9, characterized in that the connecting joints of the blinds elements (1) with the links (2) of the traction chain are designed with profiled guides (44, 47) through which the blinds elements (1) are connected with drawbar links (2). Thread according to one of Claims 1 to 6 or 8 to 10, characterized in that the connecting joints (44, 47) between the blinds (1) and the links (2) of the traction chain are arranged below each other approximately below the connecting joints ( 40, 42) between the respective links (2) of the draw chain. Coil according to one of Claims 9 to 11, characterized in that the connecting joints (40, 42) between the draw chain links (2) and the gear chain links (5) are movable in the direction of coil movement. Thread according to one of Claims 8 to 12, characterized in that a groove (15,49,51) is provided at the lower longitudinal edge of the blinds elements (1) and / or links (5) of the gear chain, which in the closed state of the thread cooperates with the bridge (14.50, 52) provided in the area of the upper longitudinal edge of the draw chain links (2) or the louver elements (1) and / or gear chain links (5). Coil according to one of Claims 8 to 12, characterized in that on the lower longitudinal edge of the blinds elements (1) and / or links (5) of the gear chain there are bridges (39) which in the closed state of the coil interact with the bridges. (5) adjacent links (2) of the draw chain or louver elements (1) or. of the gear chain (5). Coil according to one of Claims 1 to 14, characterized in that a projection (6, 70) is provided on the links (2) of the traction chain through which the traction links (2) are guided in locally fixed guide profiles (71). Thread according to claim 15, characterized in that the projections (6) have sliding elements (3, 4, 33), the thickness of which is adapted to the groove width (B, C) of the locally stationary guiding profiles (71). Coil according to claim 16, characterized in that the sliding elements (3, 4) form a sliding chain. Coil according to one of Claims 1 to 17, characterized in that the links (2) of the draw chain extend over the entire width of the coil. Coil according to one of Claims 1 to 17, characterized in that a traction chain is provided at the longitudinal edges of the coil, and optionally in the central region of the coil one or more further traction chains. Coil according to one of Claims 1 to 19, characterized in that the links (2) of the draw chain comprise limited bores (55) with bridges (56). Thread according to one of Claims 1 to 19, characterized in that the links (2) of the draw chain consist of longitudinally extending threaded elements of the extending profile bars (60,61) interconnected with the bridges (62). 22. A thread according to claim 21, characterized in that the profile bars (60, 61) of the pull chain (2) on the opposite side of each other are provided with approximately T-shaped grooves (64, 65) into which the bridges reach. (62). 23. A thread according to claim 21 or 22, characterized in that the profile bars (60, 61) are welded or glued to the bridges (62). Coil according to one of Claims 1 to 23, characterized in that the total joint cross-section of the draw chain links (2) and the gear chain links (5) corresponds essentially to a cross-section of the thread elements. Thread according to one of Claims 1 to 24, characterized in that there are empty spaces (10, 11) on the draw chain links (2) into which the connecting joints (40,42) of the links (40,42) are provided. 5) gear chains. Thread according to one of Claims 10 to 25, characterized in that the profile section (40, 42; 44, 47) has a cutout (105) on the first part and a cover (109) on the second part. it can be folded into the recess (105). 27. A thread according to claim 26, characterized in that the cover (109) is circumscribed by cutouts (107,108), such as a cut or the like. 28. A thread according to any one of claims 1 to 27, characterized in that at least one angular part (81) which can cooperate with the hook is pivotally mounted on the uppermost louver element (1) or the uppermost link (5) of the louver chain , locally stationary (82). 29. A thread according to claim 28, characterized in that the hook portion (82) comprises at its lower end a hook (84) to comprise a vertical, downward opening (85) having a through hole (86) through its upper end. the angular portion (81) that the through hole (86) is at least partially covered by the spring straps (87), and that the portion (82) extends from the hook obliquely downward to the thread of the inclined spring straps (87) forming an extension of the gap ( 85). Coil according to claim 28 or 29, characterized in that the hook part (82) is rotatably and preferably a small laterally movable bearing on the cantilever (88) and provides a spring which loads the hook part (82) to the coil. 31. A thread according to claim 28, characterized in that the hook part (82) is spring-formed and in its upper region comprises a horizontally extending slot (97) so that the lower edge of the slot (97) is inclined upwards, facing away from the thread the deflector (98) and the top edge of the slot (97) is formed obliquely downwards, from the coil away by a protruding router (99) projecting over the deflector (98). 32. Thread according to claim 29, characterized in that the hook part (82) comprises vertically extending slots (93, 94) which divide the hook part (82) into the fastening part (91) and the spring part (92 ', 92 ") , and that, at the upper end of the spring portion (92 '), an inlet (100) is projected obliquely upward from the coil. 33. Thread according to claim 28, characterized in that the hook part (82) is spring-formed and comprises, in the form of a letter L, a shape that the hook part (82) is secured to the inside of the threaded housing (123) by the arm (91). or the like, that a hook (102) is provided on its free leg (92) of the hook portion (82) and that the hook (102) faces the front wall (124) of the housing (124) opposite the hook (125). ) threads or the like, or slightly offset from them. 34. A thread according to claim 33, characterized in that the front wall (124) of the housing (123) is threaded and the like. in the region of its lower longitudinal edge bent away from the housing (123) of the thread obliquely downwards and the hook portion (82) is disposed in the area of this bend. 35. Thread according to any one of claims 28 to 34, characterized in that the substantially horizontal arm (90) of the corner hook (82) interacts with the hook portion (82). Coil according to one of Claims 1 to 35, characterized in that a coil (111) is provided for winding the coil whose outer diameter measured from the axis of rotation (112) of the shaft (111) is smaller than in the area (113). by the remaining circumference of the shaft (111). 37. A thread according to claim 36, characterized in that the shaft (111) comprises an approximately polygonal cross-section and that one side of the polygon lies closer to the axis of rotation (112) of the shaft (111) than the remaining sides of the polygon. 38. Thread according to claim 36 or 37, characterized in that on the shaft (111) projected inwardly projecting bridges (117) whose inner surfaces lie on the circumference of a circle (118) whose center coincides with the rotary axis (112) of the shaft (112). 111). 39. Thread according to claim 36 or 37, characterized in that the shaft (111) comprises an inner diameter (120), which is at least partially formed by bridges (117) projecting from the shaft (111) inwardly, the center (119) of which extends outwardly. with respect to the shaft (112) of the shaft (111). Coil according to one of claims 36 to 39, characterized in that a groove is provided in its longitudinal direction in its longitudinal direction, into which a bolt (114) or similar can be received to attach the coil to the shaft (111). 41. The thread according to any one of claims 36 to 40, characterized in that it is the uppermost or the highest. a first threaded blade (77) connected to a shaft (111) via a spring strap (115) or the like. A thread according to claim 40 or 41, characterized in that the spring strap (115) is secured in the groove of the shaft (111) via a bolt (114) or the like and the shaft (11) is clamped once.