EP0865557B1 - Adjustable canopy - Google Patents

Abstract

PCT No. PCT/AT96/00242 Sec. 371 Date Jul. 17, 1998 Sec. 102(e) Date Jul. 17, 1998 PCT Filed Dec. 6, 1996 PCT Pub. No. WO97/21014 PCT Pub. Date Jun. 12, 1997In the described awning of variable size comprising a canvas (1, 2) which can be wound up on a shaft (3) provided with a drive, the canvas (1, 2) is fastened to the shaft (3), which has only one single drive, at a parting or folding line, and for winding up or unrolling the canvas parts (1, 2) provided by the parting or folding line, at least one tensioning rope (6, 6') is provided which engages at the canvas (1, 2) and which can be coiled up on the shaft (3) on at least one coiling pulley (5, 5') seated on the shaft.

Description

The invention relates generally to an adjustable size Tarpaulin roof, e.g. Sun canopy, and more in detail an adjustable tarpaulin roof with a tarpaulin in the area a part or fold line on a single, rotatable on straps mounted shaft and provided with a single drive attached and can be rolled up on this.

In known tarpaulin roof arrangements, a tarpaulin is open a rotatable shaft that can be rotated by hand or motor, one edge of the tarpaulin attached to the shaft is. From this wave the tarpaulin can move in one direction, under Using a cantilever. These well-known Arrangements are, however, poorly suited for roofing larger areas because they sag too much and as a result the cantilever very high forces on the cantilever and its fasteners work.

A tarpaulin roof of the type mentioned is from the US 4,724,882 A is known. This well-known tarpaulin roof comes with a Main shaft equipped, from or to the two rectangular Tarpaulin parts are unwound / wound up. About that - only a little Measure possible - rolling up these tarpaulin parts on the shaft controlled an inclination of the roof surfaces, which further be supported on inclined telescopic supports.

FR 2 431 827 A is a different kind of tarpaulin known in the case of a drive shaft provided with a drive only the ropes of cables are wound up or unwound become. Two related, separate tarpaulins however, each rolled up on a stick when the tarpaulin roof should be opened. The one cables pull when closing of the roof on tie rods on the upper longitudinal edges of the Tarpaulins are attached. The ropes of the other cables are when opening the roof rolled up on the shaft and serve as Drive means for unrolling the roll-up rods on arched ones Frame parts, the respective tarpaulin rolled up on the rod becomes.

It is an object of the invention to have a tarpaulin roof as in the beginning to create, with which large areas are covered can, the tarpaulin well by appropriate force introduction can be kept taut without supporting structures over Fee will be claimed.

Furthermore, it is an object of the invention, one for the invention Tarpaulin roof especially suitable cable pull winding roller to provide a tight rolling up of the train Ropes allowed.

The invention is based on the consideration that it is advantageous would be to hang the tarpaulin in the middle and at its ends or to support, while at the same time whenever possible to be excited. Such an arrangement can then be larger Cover surfaces, the suspension points of the extendable or extended corners of the tarpaulin only the tension of the tarpaulin and take up a small part of the weight of the extended tarpaulin to have.

The tarpaulin according to the invention of the type mentioned is characterized in that for rolling up and down the part or fold line given tarpaulin parts at least two Cable pulls are provided which attack the tarpaulin parts and can be rolled up onto the shaft. The cables are preferably who attack one part of the tarpaulin, at least one roll on the shaft can be rolled up.

Thus, in the present tarpaulin roof, especially the sun roof, the tarpaulin (a canvas or the like) either on one Line, e.g. a diagonal line of symmetry, folded, whereby two tarpaulin parts are formed, or it consists of two separate Parts whose edge contact lines are like a "fold" line form or correspond to the fold line; the tarpaulin parts can be of different sizes and / or different shapes. In the area of the fold line (or dividing line) the tarpaulin or the tarpaulin parts are attached to the drivable shaft; to the Rolling up or rolling off the tarpaulin parts is preferably two cable pulls provided that each attack on a tarpaulin part and on the Shaft or winding rollers sitting on it can be rolled up. Conveniently the tarpaulin is made with flat battens e.g. made of GRP material, provided parallel to the reel shaft.

In itself, rolling up a folded cloth is e.g. at Foresailing boats are known where the cloth is wound onto the forestay and when unrolling by means of two separate pulling devices pulled out to a so-called butterfly sail can be, which makes it particularly suitable for sailing in the Passat is suitable. However, this area of application is far from Scope of the invention, the tarpaulin roofs, preferably Canopies. In addition, the invention Unrolling and rolling up only one drive in assignment used a wave.

Through the "double", possibly two-ply (with the corresponding Overlap of the tarpaulin parts) starting in the area of the fold or dividing line are also various design options for the shape of the Given the tarpaulin. Here it is for good force compensation advantageous if the points of the tarpaulin parts where the respective cable is attached to one and the same Wave vertical line lie, as well as when the tarpaulin parts are symmetrical to each other. On the other hand, it is for certain Shapes favorable if the points of the tarpaulin parts where the respective cable is attached to two different, line parallel to each other and perpendicular to the shaft, or when the tarpaulin parts are rolled out on the fold line are offset from each other. For unrolling and rolling up it is also an advantage if the tarpaulin parts are triangular.

To compensate for the different unwinding lengths and for tension the cable pulls can have at least one elastic link, in particular a coil spring. It is special advantageous if the elastic member is arranged so that it which pulls two (or more) cables towards each other, being in the case of a single elastic link on these two pulleys or a double roll are attached, over which each a cable is guided. It is also favorable here if the Attachment point of the elastic member at a height above the Shaft is adjustable and the feed of the two cables is too a single winding roll is made via guide rolls that are attached to a cantilever are attached so that the winding roll leading cables are kept high enough above the roof. On the other hand, it is for even tensioning of the cables advantageous if two elastic links are arranged so that they pull the two cables towards each other, each elastic link at each end via an attached one Tension pulley is connected to one of the cables.

A well-suited for roofing particularly large areas Embodiment is characterized in that on the Drive shaft on the side of the rolled tarpaulin, one winding roll each is attached, with each of the two winding rollers run out of two ropes attached to it, each one to the one or other cable pull listened to and via pulleys attached to Fixed points, e.g. Stand, are hung, to idlers that pull the two cables in a springy manner towards each other Fixed pulleys attached to each pulley Tarpaulin part attached pull roller is guided and from there over Deflection rollers and tensioning rollers run to the other winding roller; the course of the two cables can be the same and be symmetrical.

For a stable attachment, it is advantageous if the Shaft fixed at each of its two ends, e.g. on a stand, is mounted, the one bearing as a motor drive or manual drive is formed. For particularly flexible applications, on the other hand, especially with smaller tarpaulin roofs also cheap if the shaft spans one of them Stirrup is stored, which in turn by firmly attached Carrier is held. It has also proven advantageous proven if there is only one winding roller on the shaft, whereby each cable pull starting from this winding roll has a Deflection pulley to tension pulleys and further to those located at fixed points Deflection rollers and from there to the corner of the tarpaulin parts runs.

It is also conceivable that the extended tarpaulin parts not run according to a common level, but that they extendable at an angle other than 180 ° are, for example, can be extended to a kind of tent roof.

It is also advantageous if each of the two cables starting from the winding rolls first over, over or under the shaft bearing is firmly suspended role, the Train in the rope is dimensioned so that a desired bend the Wave, preferably upwards, is achieved. With such a Bending the shaft can cause sagging of the tarpaulin parts be counteracted.

Then it is advantageous if the deflection and at most the tensioning rollers are fixed, to the side of the actual roller attached side plates, much larger in diameter have, which prevent the rope from jumping out.

It is also an advantage if four the tarpaulin and the Rope-supporting posts are provided, two diagonally opposite pillars carry the drive shaft and the two other pulleys for deflection. The upright can be designed as guyed masts, especially pipes.

For reasons of flexibility, it is also appropriate if the winding rolls are locally adjustable.

It has also proven to be advantageous if each of the two cables or their attachment points at least one Predetermined breaking point as protection against overload, e.g. by Wind pressure, is provided.

To adjust the tarpaulin roof, it is advantageous if the Shaft displaceable and / or gimbal at at least one end is stored.

Furthermore, it is favorable if in the case of unequal lengths Tarpaulin parts on the longer part of the tarpaulin, optionally with side beads, is attached to which the pull rope of the shorter tarpaulin part winds up. Moreover each part of the tarpaulin can be provided with edge protection strips, which are dimensioned so that they cover the tarpaulin when rolled up cover, thereby protecting the tarpaulin when rolled up is automatically received.

To ensure an orderly, tight winding of the cables despite the Ensuring tension in them is an advantageous one Embodiment provided which are characterized in that the or each winding roll slightly with respect to its axis of rotation is conical, the cone angle being preferred to the axis is below 1 °, and that the winding roll on its thicker Rounded end into a larger end plate in diameter and the supply of the rope (s) to be wound up is scarce along the end plate in the area of the largest diameter of the Rounding takes place, with the rope to be wound or the ropes in Areas of the thinner end of the winding roll, preferably on an end plate located there, attachable or attached are.

It should be mentioned here that it is for temporary storage of threads in textile yarn winders is known, with winding drums to provide a decreasing diameter, cf. for example DE 31 23 760 A, DD 221 984 A and CH 624 362 A; this for However, the type of reeling intended for textile devices works with threads that are constantly being fed in and out and that are not are attached at one end to the winding drum.

The rope guide also in the case of two or more ropes easy to hold, it is convenient if these ropes over Multiple rolls or rolls with multiple grooves are guided.

It is also for space-saving attachment of a drive favorable if the or a winding roll inside an electric motor has that drives their outer jacket.

It is also advantageous if the lubricity of the or of the ropes to be wound up with the sliding ability of the roll cover and the radius of the rounding of the transition from the surface of the jacket is matched to the end plate so that the cable turns sufficient at the approximately largest rounding diameter large pressure force directed in the direction of the roller axis on the generate previously wound rope turns, whereby these turns of rope continuously against the roller sheath the slimmer end to be pushed.

It has also proven to be beneficial if guy ropes on stands or the like, which are tubular, by means of plugs inserted into the pipe end are attached, which Graft overlap the pipe end and a number of holes that e.g. are arranged in a circle, with the guy ropes passed through these holes and below them pressed-on sleeves are provided that slip out prevent.

Furthermore, it is advantageous if for fastening the ropes double flaps attached to the tarpaulin parts, through which a slotted bolt is pushed, through which Slot the rope is inserted, the one behind it is pressed on Is provided sleeves that hold a rope loop together.

Finally, it is advantageous if the shaft on which the Tarpaulin or the tarpaulin parts can be rolled up, from one with one Grooved tube, preferably a steel tube, the tarpaulin using a welt inserted into the groove is attached to the pipe.

die Fig.1a bis 1d schematisch verschiedene mögliche Grundformen eines Planendaches;

die Fig.2 und 2a schaubildlich ein Planendach mit einer auf einer Welle aufgerollten Plane, deren ausziehbare Ecken in entgegengesetzte Richtung weisen, wobei in Fig.2a zur besseren Veranschaulichung der Schatten der Einrichtung auf einem flachen Gebäudedach gezeigt ist;

die Fig.3 und 3a in den Fig.2 und 2a entsprechenden Darstellungen die Plane im ausgerollten Zustand, wobei sie einen großen Schatten wirft;

Fig.4 schaubildlich eine andere Planendach-Ausführung, mit einer modifizierten Befestigung der antreibbaren Welle;

Fig.5 eine Ansicht einer Wickeltrommel, die auf der Welle sitzt und zum Aufwickeln der Zugseile für die Plane dient;

die Fig.6 und 7 in Detaildarstellungen eine Ausführung mit einem Scheuerschutzband, das seitliche Erhöhungen aufweist, und das den Zweck hat, bei ungleich langen Planenteilen die Plane gegenüber dem aufzuwickelnden Seil zu schützen;

Fig.8 in einer schaubildlichen Ansicht die Erzeugung der Kraftwirkung zur Biegung der Antriebswelle mittels entsprechender Aufhängung von Umlenkrollen an Stehern, welche die Antriebswelle tragen;

Fig.9 in einer Detaildarstellung eine Ausführung eines Stehers als abgespannter Mast;

Fig.10 in einer schematischen Schnittdarstellung und Draufsicht eine Befestigung der Abspannseile an einem Steher;

Fig.11 in einer schaubildlichen Ansicht eine Aufhängung der Wellenenden an auskragenden verstellbaren Armen, die z.B. an einer Wand befestigt werden können, wobei ein genutetes Aluminiumrohr oder ein stählernes und verzinktes Nutrohr den Keder der Plane aufnimmt; und

Fig.12 eine schaubildliche Darstellung einer Zweifachlasche zur Befestigung eines Seils an einer Plane.

The invention is further explained on the basis of preferred exemplary embodiments shown in the drawing, to which, however, it should not be limited. Show it:

1a to 1d schematically different possible basic shapes of a tarpaulin roof;

2 and 2a show a tarpaulin roof with a tarpaulin rolled up on a shaft, the extendable corners of which point in the opposite direction, with FIG. 2a being shown on a flat building roof for better illustration of the shadow of the device;

3 and 3a in the representations corresponding to FIGS. 2 and 2a, the tarpaulin in the rolled-out state, casting a large shadow;

4 shows another tarpaulin roof design with a modified fastening of the drivable shaft;

5 shows a view of a winding drum which sits on the shaft and serves to wind up the pulling cables for the tarpaulin;

6 and 7 in detail representations an embodiment with an abrasion protection band which has side elevations and which has the purpose of protecting the tarpaulin against the rope to be wound up in the case of tarpaulin parts of unequal length;

8 shows a diagram of the generation of the force effect for bending the drive shaft by means of corresponding suspension of deflection rollers on uprights which carry the drive shaft;

9 shows a detailed version of an upright as a guyed mast;

10 shows a schematic sectional view and top view of an attachment of the guy ropes to a post;

11 shows a perspective view of a suspension of the shaft ends on projecting, adjustable arms which can be fastened, for example, to a wall, a grooved aluminum tube or a steel and galvanized groove tube receiving the piping of the tarpaulin; and

12 shows a diagrammatic representation of a double strap for fastening a rope to a tarpaulin.

1a shows a sunroof tarpaulin with two tarpaulin parts 1, 2, which are different in shape and size, but lie its two points S, on which pulling ropes 6 and 6 'act, on one and the same perpendicular to the axis of a shaft 3 dash-dotted line. According to Fig.1b can by Tips S of tarpaulin parts 1, 2 going tensile directions (ropes 6, 6 ') also run parallel next to each other, with the tarpaulin parts 1, 2 can have different shape and size and on the Shaft axis are shifted against each other. A perfect one symmetrical arrangement of the tarpaulin parts 1, 2 is in Fig.1c shown. By contrast, FIG. 1d shows an arrangement of the tarpaulins or tarpaulin parts 1, 2, both of which are in the rolled-out state are entirely offset from each other. All of these basic Tarpaulin arrangements can be used within the scope of the invention Find. The tarpaulin parts 1, 2 can be conventional in themselves and therefore not further illustrated the shaft 3 along its fold line or along its edges (if there are separate tarpaulin parts). Preferably the shaft 3 consists of a grooved tube, the Groove serves the tarpaulin parts by means of an attached Fasten the welt by pushing it into the groove.

In Fig.2 the two are diagonally opposite one another Corners of a folded and rolled up on a shaft 3 Plane shown that consists of two different sized parts 1, 2 consists. The shaft 3 can be rotated via a drive 4, and on it are wound reels 5, 5 ', the preferred ones Design explained in more detail below with reference to FIG. 5 shall be. From each winding roll 5, 5 'go two cables 6, 6 'off. Since the two tarpaulin parts 1, 2 in this embodiment are not the same length in the direction of pull (see also Fig. 3) a protective tape 24 is applied to the longer tarpaulin part 1, on which winds the rope 6 'of the shorter tarpaulin part 2. The Cable 6 runs, starting from one winding roll 5, over a pulley 7 attached to a post 14 and one Tensioning roller 8 to an upper deflection roller 9 on an upright 11 '. The latter can consist of two independently rotatable rollers consist. Then the cable 6 runs from the deflection roller 9 a similar deflection roller 10 on the post 11 'and on a pull roller 12 on the tarpaulin part 1 and then back to the Deflection rollers 10, 9, the two going to the tension roller 12 Cable components move in the same direction. Then leads the cable 6 via a tension roller 13 and one on an upright 14 'attached deflection roller 7' to the other winding roller 5 ', on the he is attached.

The other cable 6 'leads in an analogous manner from one Winding roller 5, to which it is attached, via the deflection roller 7 and a tensioning roller 13 ', then on an upright 11 attached deflection rollers 9 ', 10' to a pull roller 12 'on the Corner of the smaller (shorter) tarpaulin part and around this pull roller 12 'around back to the deflection rollers 10', 9 'from there on a tensioning roller 8 'and the deflection roller 7' on the upright 14 'and finally to the other winding roll 5 '. The two ends of both Cables 6, 6 'are attached to the winding rollers 5, 5'. At one by the drive 4 (e.g. schematically with a crank shown) caused rotation of the shaft 3 in the by the two winding rollers 5, 5 'indicated arrows Clockwise (seen from the left in Fig. 2) the tarpaulin parts 1, 2 withdrawn from the shaft 3 by the cables 6, 6 '. Elastic members 15, 16, e.g. Springs, especially helical or coil springs, keep the cables 6, 6 'tensioned. (As in Fig. 11 shown can be arranged only a spring 48 itself become).

The entire tarpaulin roof sits by means of the uprights 14, 14 'and 11, 11 ', which carry the tarpaulin or sunroof, on the walls of a cubic building 17. The Fig.2a leaves this in a more descriptive way Recognize wise. The flat roof of the building is in this Presentation dashed horizontally for better emphasis. On him the shadow of a person is drawn below the rolled up tarpaulin roof.

3 shows the tarpaulin roof device shown in FIG with tensioned tarpaulin 1, 2, and also the drive shaft 3 is shown slightly bent upwards. This bend is desired and the consequence of the deflection rollers 7, 7 ' exerted inclined pull. If you extend the uprights (11, 11 ', 14, 14 'in Fig.2) upwards, so you can move the point of attack the direction of the diagonal pull of the roller suspension and thus change its effect. The stronger the diagonal pull, i.e. the higher the suspension of the deflection rollers 7, 7 ', the more of course the bend of the shaft 3 is stronger the possibility of moving the winding rollers 5, 5 'on the shaft 3. In Figure 3 is also the use of UV protective strips 1 ", 2" shown on the edges of the tarpaulin parts, 1, 2, which protect the more sensitive tarpaulin when rolled up.

3a again shows the arrangement shown in FIG. however, for better illustration with one under the Shadow of tarpaulin standing people. The angular shadow of the Tarpaulin appears on the hatched flat roof.

Another exemplary embodiment is shown in FIG. in which the drivable shaft 3, on which the tarpaulin is rolled, is carried by a bracket spanning them or the like 18, which in turn by means of supports 19, 20 on a house wall or on Rafters can be attached. In this simpler embodiment only a single winding roll 27 is used; two tension rollers 25, 25 'are resiliently suspended. To this In this way, the shaft 3 can also be cantilevered above it Building parts can be arranged. So the tarpaulin can e.g. one span a small courtyard and a flat roof. The possible use this embodiment is therefore very universal.

5 shows a preferred embodiment of the winding roll, whose roller body 31 is not completely cylindrical, but is slightly conical. Depending on the material of the roll and rope is the angle between a generatrix 30 of the cone shell and the axis of the shaft 3 between almost 0 ° and 2 °. Prefers becomes an angle of 0.5 °. This makes it an automatic Move up the larger one from the start area (on the right in Fig. 5) Diameter coming, i.e. windings wound there reached along the roller body 31. It is therefore contrary not necessary to known winding rolls, the roll itself or the Rope feed point to move to achieve that lay the coils perfectly next to each other. The role according to Fig. 5 also has a diameter at one end larger end plate 32, into which it merges rounded. This Rounding is indicated by 33. At 34 and 35 there are two ropes referred to, which are guided over a roller 36. On the Drum surface, i.e. the coils are the turns close together. At 37, the ropes 34, 35 are on one opposite end plate 38 attached. When the roll rotates run the two ropes 34, 35 on the thicker, at 33 rounded End next to the end plate 32 and slide next to each other the roller body 31 in the direction of the smaller diameter. So the turns slowly slide against the other end plate 38 out. The winding roll or drum is according to Fig.5 with their Axis of rotation e.g. on a wall 39 or on a stand attached. The material for the ropes 34, 35 is e.g. Steel wire and a polyamide for the drum. Every rope is made from a number (e.g. 19) of twisted wires. The rope strength depends on the desired resilience.

In the winding roll can in a conventional manner Electric motor to be housed to drive it.

6 and 7 that is already mentioned above Abrasion protection tape 24 more in detail and with thickened edges 24 'shown, between which that is together with the respective Tarpaulin part wrapped rope. The Figure 7 represents schematically a cross section through the abrasion protection band 24 including one rope lying on it.

In Fig.8, which the generation of a shaft 3 bend Turn shows, again 4 designate a drive and 7 or 7 'each a pulley. The latter, however, are here by means of a short Rope to a higher point of post 14 or 14 ' tense. The cable pulls 6, 6 'are analogous to one another. from the respective winding roll 5 or 5 ', over which at an angle Deflection pulley 7 or 7 'braced above the upright 14 or 14' guided. As a result, the shaft 3 is bent slightly upwards. By moving the winding roll 5 or 5 'on the shaft 3 can the bending moment on shaft 3 can be changed. Moreover allows the local adjustment of the winding rollers 5, 5 'one Compensation of the pre-tension on the cables 6, 6 '. This effect can be done by moving the point of attachment of the suspension influence the deflection rollers 7, 7 'even further.

9 shows the suspension of a deflection roller 42 on a articulated and braced against a fixed point a tube formed support 40, at the upper end of one Bracket 41 is seated, which is inserted into the support tube. A Similar bracket is shown in Fig.10. One in that Carrier tube inserted holder part 41 has a number of Bores 42 through which the tensioning cables can be guided, which are provided with crimped clamps 43 on the inside, so to prevent the respective rope from slipping.

11 shows an at least currently particularly preferred Tarpaulin roof arrangement, in which a cantilever 43 two guide rollers 44, 45 carries, by means of which the entire cable 6, 6 ' with pulley 46, 47 and above the sunroof the only spring 48 are kept high enough. The Angle between the cantilever 43 on the shaft 3 is approximately 30 °. Both the two pulleys 44, 45 and the Attachment of the single spring 48 are adjustable. It can two springs are also provided starting from point 49, one of which on the pulley 46 and the other on the Deflection roller 47 acts to the tension of the sun roof receive. On the edges of the tarpaulin are known per se Way protective strips attached to the tarpaulin itself in the Completely cover the rolled up condition. The shaft 3 with the Winding roll 5 can at one end, below the Krägägers 43, cardamic, whereas they are on the other Preferred end - in view of the bends in operation - is kept longitudinally displaceable.

In Fig.12, a tab is shown in the diagonal, which for Connection of the tarpaulin with the associated pull rope 6 or 6 'serves. This is in a double loop 62, the a solid fabric is made, a slotted bolt 63. The loop 62 is attached to the top of the tarpaulin. The Traction rope 6 or 6 'is when inserting the bolt 63 in it Slot 64 inserted after it was previously crimped with Terminals 66, 66 'was provided, these terminals 66, 66' one Hold rope loop 67 together.

The operation of the system, i.e. stretching or curling the sunroof or tarpaulin in general, can also be program controlled take place, so that e.g. at certain times and / or the tarpaulin automatically in certain weather conditions is rolled out or rolled up. This can be done in known Sensors are used in a circuit known per se.

Claims (36)

1. A variable awning comprising a canvas (1, 2) which is fastened to a single shaft (3) in the region of a parting or folding line, and is capable of being coiled up on said single shaft, said shaft being rotatably mounted on carriers (14, 14'; 18) and being provided with a single drive, characterized in that for rolling up and unrolling the canvas parts (1, 2) provided by the parting or folding line, at least two tensioning ropes (6, 6') are provided which engage on the canvas parts (1, 2) and are capable of being coiled up on said shaft (3).
2. An awning according to claim 1, characterized in that the tensioning ropes (6, 6') each engaging at one canvas part (1, 2) are capable of being coiled up on at least one coiling pulley (5, 5') seated on the shaft.
3. An awning according to claim 1 or 2, characterized in that the points (S) of the canvas parts (1, 2) at which the respective tensioning rope (6, 6') is fastened lie on one and the same line which extends at a right angle to the shaft (3).
4. An awning according to claim 1 or 2, characterized in that the points (S) of the canvas parts (1, 2) at which the respective tensioning rope (6, 6') is fastened lie on two different lines which extend in parallel to each other and at a right angle to the shaft (3).
5. An awning according to claim 1 or 2, characterized in that in the unrolled state the canvas parts (1, 2) are offset relative to each other at the folding line.
6. An awning according to any one of claims 1 to 3, characterized in that the canvas parts (1, 2) are symmetrical to each other.
7. An awning according to any one of claims 3 to 5, characterized in that the canvas parts (1, 2) are differently sized and/or differently shaped.
8. An awning according to claim 3, characterized in that the canvas parts (1, 2) are of equal size, yet offset relative to each other at the folding line.
9. An awning according to any one of claims 1 to 8, characterized in that the canvas parts (1, 2) are triangular.
10. An awning according to any one of claims 1 to 9, characterized in that at least one elastic element (15, 16; 48) is provided to compensate for the different uncoiling lengths and for tensioning the tensioning ropes (6, 6').
11. An awning according to claim 10, characterized in that the elastic element (15, 16; 48) is designed as a helical spring.
12. An awning according to claim 10 or 11, characterized in that the elastic element (15, 16; 48) is arranged such that it draws the tensioning ropes (6, 6') towards each other, and in case of a single elastic element (48), two deviation pulleys (46, 47) or a double pulley being attached to this elastic element, one tensioning rope (6, 6') each being guided thereover.
13. An awning according to claim 12, characterized in that the point of attachment (49) of the elastic element (48) is adjustable in terms of height above the shaft (3) and that the two tensioning ropes (6, 6') are guided to one single coiling pulley (5) over guiding rollers (44, 45) fastened to a cantilevering carrier (43) so that the tensioning ropes (6, 6') leading to the coiling pulley (5) are held sufficiently high above the awning.
14. An awning according to claim 10 or 11, characterized in that two elastic elements (15, 16) are arranged such that they draw the two tensioning ropes (6, 6') towards each other, each elastic element at each end thereof being connected with one of the tensioning ropes (6, 6') via a tensioning pulley (8, 8' or 13, 13', respectively,) fastened thereto.
15. An awning according to any one of claims 2 to 11 and 14, characterized in that on each side of the rolled-in canvas (1, 2) a respective coiling pulley (5, 5') is fastened to the drive shaft (3), wherein from each of the two coiling pulleys (5, 5') two ropes fastened thereto depart, each one of these ropes belonging to the one or to the other tensioning rope device (6, 6') and being guided over deviation pulleys (7, 7') suspended at fixed points, e.g. uprights (14, 14'), to tensioning pulleys (13, 13') which resiliently draw the two tensioning ropes (6, 6') towards each other, over deviation pulleys (9, 9' and 10, 10') suspended at further fixed points to respective tensioning pulleys (12, 12') each fastened on a respective canvas part (1, 2), and from there running via deviation pulleys and tensioning pulleys to the other coiling pulley (5').
16. An awning according to claim 15, characterized in that the course of the two tensioning ropes (6, 6') is similar and symmetrical.
17. An awning according to any one of claims 1 to 16, characterized in that the shaft (3) is fixedly mounted in bearings at each of its two ends, e.g. on an upright (14, 14'), one of the bearings being designed as a motor drive or as a manual drive.
18. An awning according to any one of claims 1 to 16, characterized in that the shaft (3) is mounted on a bow (18) spanning the former, which in turn is held by fixedly attached carriers (19, 20).
19. An awning according to claim 18, characterized in that only one single coiling pulley (27) is seated on the shaft (3), each tensioning rope (6, 6') departing from this coiling pulley (27) extending via a deviation pulley (28) to tensioning pulleys (25, 25') and further on to deviation pulleys (26, 26') seated at fixed points and from there to the tensioning corners of the canvas parts.
20. An awning according to any one of claims 1 to 19, characterized in that the canvas parts (1, 2) capable of being rolled in can be drawn towards each other at an angle deviating from 180°, e.g. to a type of tent roof.
21. An awning according to any one of claims 2 to 18 or 20, characterized in that each of the two tensioning ropes (6, 6'), departing from the coiling pulleys (5, 5'), at first is guided over a pulley (7, 7') which is preferably fixedly suspended above a shaft bearing, the tension in the rope being chosen such that a desired bend of the shaft (3), preferably an upward bend, is attained.
22. An awning according to any one of claims 1 to 21, characterized in that the deviation pulleys and, optionally, the tensioning pulleys comprise stationary side plates arranged laterally of the pulley proper and having a substantially larger diameter, said side plates preventing the rope from escaping.
23. An awning according to any one of claims 1 to 17 and 20 to 22, characterized in that four uprights (11, 11', 14, 14') carrying the canvas and the tensioning ropes are provided, two diagonally oppositely arranged uprights (14, 14') carrying the drive shaft (3) and the two other uprights (11, 11') carrying rope pulleys for deviation.
24. An awning according to claim 23, characterized in that the uprights are configured as guyed poles.
25. An awning according to any one of claims 1 to 24, characterized in that the coiling pulleys (5, 5') are locally displaceable.
26. An awning according to any one of claims 2 to 25, characterized in that on each of the two tensioning ropes (6, 6'), or on their sites of attachment, respectively, at least one pre-determined breaking point is provided to protect against an excessive load, e.g. by wind pressure.
27. An awning according to any one of claims 1 to 26, characterized in that the shaft (3) on at least one of its ends is displaceably and/or Cardanically mounted .
28. An awning according to any one of claims 1 to 27, characterized in that in case of canvas parts of different lengths, a chafe protection strip (24), optionally comprising lateral beads (24'), is provided on the longer canvas part (1), on which the tensioning rope of the shorter canvas part coils up.
29. An awning according to any one of claims 1 to 28, characterized in that each part of the canvas is provided with rim protection strips (1", 2") which are dimensioned such that they cover the canvas in the rolled-in state.
30. An awning according to any one of claims 2 to 29, characterized in that the or each coiling pulley (5, 5') is slightly conical in respect of its axis of rotation, the cone angle relative to the axis being preferably less than 1°, and that at its thicker end the coiling pulley merges with a curvature into an end plate (32) of larger diameter and that the supply of the rope or ropes (6, 6') to be coiled up occurs tightly along the end plate (32) in the region of the largest diameter of the curvature (33), the rope or ropes (34, 35) to be coiled up being attachable or attached in the region (37) of the thinner end of the coiling pulley (30), preferably at an end plate (38) located there.
31. An awning according to any one of claims 1 to 30, characterized in that the ropes are guided over multiple pulleys or pulleys having several flutes.
32. An awning according to any one of claims 2 to 31, characterized in that the or one coiling pulley, respectively, comprises an inwardly arranged electric motor driving its external jacket.
33. An awning according to any one of claims 30 to 32, characterized in that the sliding capacity of the rope or ropes to be coiled up is matched to the sliding capacity of the pulley jacket and the radius of curvature (33) of the transition from the jacket surface to the end plate (32) so that the rope windings at the approximately largest diameter of curvature create a sufficiently high pressure force directed towards the roller axis onto the already previously coiled up rope windings, whereby these rope windings are continously pushed onto the roller jacket towards the thinner end.
34. An awning according to any one of claims 1 to 33, characterized in that anchoring ropes are fastened to uprights (40) or the like of tube-shaped configuration by means of plugs (41) inserted in the tube end, which plugs engage over the tube end and comprise a number of, e.g. circularly arranged, bores (42), the anchoring ropes being guided through these bores and provided with pressed-on sleeves (43) below the same which prevent a slipping-out.
35. An awning according to any one of claims 1 to 34, characterized in that for fastening the ropes (65) on the canvas parts, double straps (62) fastened thereto are provided through which a slotted bolt (63) is inserted, the rope (6, 6') being inserted in the slot thereof and being provided with pressed-on sleeves (66, 66') therebehind which hold together a rope loop (67).
36. An awning according to any one of claims 1 to 35, characterized in that the shaft (3) on which the canvas or the canvas parts (1, 2) can be wound up consists of a grooved tube, preferably a steel tube, the canvas being fastened to the tube by means of a rand-type strap inserted in this groove.

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