Device for winding and unwinding a flexible planar element and shading device comprising said device

Abstract

The invention relates to a device (4, 104) for winding and unwinding a flexible planar element (2, 102) of a sunshade (3, 103), in particular an awning (1), and to a shading device (1, 101) comprising said device (4, 104). The cable system (7, 107) advantageously has at least one tensioner (11, 111, 211) coupled to the tensioning cable (9, 109), and the tensioning cable (9, 109) is coupled to the winding shaft (6, 106) in the cable guide path downstream of a second deflection roller (10b, 110b) of the plurality of deflection rollers (10a, 10b, 10c, 10d, 10e, 110a, 110b, 110d, 110e, 110f, 110g) for winding and / or unwinding in a diametrically opposite manner in comparison with the planar element (2, 102).

Description

[0001] Device for winding and unwinding a flexible surface element and shading device with this device

[0002] Technical area

[0003] The invention relates to a device for winding and unwinding a flexible surface element of a sun protection device, in particular a sun sail, and a shading device comprising this device.

[0004] State of the art

[0005] In order to be able to operate a flexible surface element of a sun protection device, namely a sun sail, which is provided so as to be wound up and unwound on a winding shaft, it is known from the prior art (EP2260160B1) to provide a cable system for pulling and tensioning the surface element, which cable system has at least one pulling cable, at least one tensioning cable and a plurality of deflection pulleys.

[0006] Here, the pull rope engages with its first pull rope end on an eyelet of the surface element in order to pull the surface element off the winding shaft and thus unwind it.

[0007] The tensioning cable and the pulling cable are coupled together via a first deflection pulley of the several deflection pulleys in order to be able to tension the surface element manually to a desired degree of unwinding via the tensioning cable.

[0008] The tensioned tensioning cable can then be fixed using a clamp bracket.

[0009] Despite the high reliability and ease of use of such devices, automated handling of the device may be desirable. Description of the invention

[0010] The invention therefore sets out to further develop the device described above for winding and unwinding a flexible surface element for automated operation using comparatively simple measures. Furthermore, the device's handling should be further simplified.

[0011] The invention solves the problem by the features of claim 1.

[0012] If the cable system has at least one tensioner coupled to the tension cable, the surface element can advantageously be kept under tension via the traction cable coupled to the tension cable. Furthermore, if the tension cable is coupled to the winding shaft after a second deflection pulley of the multiple deflection pulleys in the cable guide path for winding and unwinding in the opposite direction compared to the surface element, the tension cable can be correctly operated simultaneously when winding and unwinding the surface element from the winding pulley – which, thanks to automation, significantly simplifies the handling of the system.

[0013] Preferably, the tensioning cable is coupled to the winding shaft by its first end. Preferably, the tensioning cable is coupled to the winding shaft in the region of its first shaft end. Preferably, the tensioning cable is coupled to the winding shaft downstream of, namely next to, the second deflection pulley in the cable guide path.

[0014] This automation can be advantageously used, for example, in a surface element that is connected to the winding shaft along a dividing line, if the traction cable engages the surface element, particularly in the region of its first corner, after the first deflection pulley, in particular with its first traction cable end, in the cable guide path, and if the traction cable engages the surface element, particularly in the region of its second corner, after a third deflection pulley of the plurality of deflection pulleys, in particular with its second traction cable end. In this case, the third deflection pulley can, for example, be provided in a stationary manner.This makes it possible to pull the surface element off the winding shaft and thus unwind it simultaneously at both corners of the surface element using a pulling cable - this can also be done under structurally simple conditions, in that the tensioning cable, in particular with its second tensioning cable end, engages the first deflection pulley, in particular at its first rotational axis, in a holding manner.

[0015] The cable system can be further simplified if the traction cable is guided over an intermediate pulley provided between the first and third deflection pulleys in the cable guide path. This intermediate pulley is arranged above the surface element and, in particular, directly above the winding shaft, in particular in a movable manner. Furthermore, this guidance of the traction cable can also ensure uninterrupted and / or contact-free winding and unwinding of the surface element.

[0016] Preferably, the second pulley feeds the tensioning cable to the winding shaft essentially vertically - which keeps the device compact in its external dimensions and also facilitates accessibility of the cable system for maintenance purposes.

[0017] The cable system's design can be further simplified if the tensioning cable runs in a Z-shaped pattern between the first and second pulleys. For example, with such a tensioning cable, the system's external dimensions can be further reduced, which can consequently lead to compact construction.

[0018] The winding shaft is preferably designed to fasten the surface element along its dividing line, in particular along its centrally running line. This can, among other things, ensure more symmetrical winding and unwinding of the surface element from the winding shaft and thus avoid the risk of wrinkles forming on the surface element. This automation can be further improved, for example, in the case of a surface element that is connected to the winding shaft along a fastening edge, if the traction cable engages the surface element with its first traction cable end, in particular in the region of its first corner, and engages the first deflection pulley with its second traction cable end, holding it, in particular at its first rotational axis.

[0019] The device can, for example, be designed to be usable for surface elements of different widths, in that a second traction cable of the at least one traction cable engages with its first traction cable end on the surface element, in particular in the region of its second corner, and with its second traction cable end engages with a sixth deflection pulley of the plurality of deflection pulleys, holding them, in particular on their sixth axis of rotation, via which sixth deflection pulley the second traction cable and the tensioning cable are coupled.

[0020] Preferably, the tensioning cable guided over a seventh deflection pulley of the plurality of deflection pulleys is coupled with its second tensioning cable end to the winding shaft, particularly in the region of its second shaft end, for winding and unwinding in a manner opposite to that of the surface element. This allows the tensioning cable to be unwound and wound on the winding shaft with an increased cable length, which can further reduce the winding diameter on the winding shaft. Preferably, the tensioning cable is coupled to the winding shaft downstream of, namely next to, the seventh deflection pulley in the cable guide path.

[0021] Preferably, the cable system guides the tensioning cable in a substantially U-shaped manner when viewed from above - this reduces the projection of the cable system relative to the surface element in the tensioned position and can thus ensure compact dimensions.

[0022] It is also conceivable for the winding shaft to be designed to fasten the surface element along its fastening edge. The cable system can be further simplified in design if the tensioning cable is guided over a fourth pulley of the several pulleys, which is located between the first and second pulleys in the cable guide path.

[0023] This is even more so if the tensioning cable is routed over a fifth pulley of the several pulleys, which is located between the first and second pulleys in the cable guide. For example, a tensioning cable routed in this way can further reduce the external dimensions of the device, which can consequently lead to compact construction.

[0024] Preferably, the second pulley guides the tensioning cable to the winding shaft essentially vertically, which can further increase the accessibility of the cable system and also facilitate maintenance work on the equipment.

[0025] The design can be further simplified if the second pulley is secured by the tensioner, particularly by its second rotational axis. This is preferably a manual tensioner, which can further simplify the design.

[0026] The above can be further simplified in handling if the tensioner has a pulley, in particular a multiple pulley, with a locking device, in particular a rope clamp.

[0027] Handling can be made even easier, for example, if the winding shaft has a manual drive for its rotation, in particular with a crank or endless pull, and the manual tensioner and the manual drive are arranged in close proximity to one another for their operation at one location in the device.

[0028] For example, a sufficient rope length on the tensioning rope to be unwound or wound up can be ensured in a structurally simple manner if the diameter of the rope winding roller provided on the winding shaft for the tensioning rope is greater than or equal to the diameter of the winding shaft.

[0029] In addition to a manual tensioner, a self-tensioning tensioner is also conceivable. This could be achieved, for example, by using the cable winding roller provided on the winding shaft for the tensioning cable as the tensioner. This self-tensioning can be achieved, for example, by at least one spring on the cable winding roller acting between the winding shaft and the tensioning cable.

[0030] The device according to the invention can be particularly suitable for a shading device with a flexible surface element of a sunshade. The sunshade can, for example, be a sun sail.

[0031] Short description of the drawing

[0032] The figures illustrate the subject matter of the invention in more detail using several exemplary embodiments.

[0033] Fig. 1 is a plan view of a sun protection device according to a first embodiment,

[0034] Fig. 2 is a plan view of a sunshade according to a second embodiment,

[0035] Fig. 3a, 3b Partial views of the sun protection according to Fig. 1 with changes to the tensioner and

[0036] Fig. 3c a partial view of the sun protection according to Fig. 2 with a modified tensioner.

[0037] Ways to implement the invention

[0038] First example:

[0039] According to Fig. 1, according to a first embodiment, a shading device

[0040] 1 with a flexible surface element 2 of a sunshade 3 and with a device 4 for winding and unwinding the flexible surface element 2. In this embodiment, the sunshade 3 represents a sun sail.

[0041] For this winding and unwinding of the surface element 2, the device 4 has a winding shaft 6 rotatably mounted on a first and second support 5a, 5b. The surface element 2 is attached to the winding shaft 6, for example, via a piping strip.

[0042] The device 4 also has a cable system 7 for pulling and tensioning the surface element 2. This cable system 7 includes a traction cable 8, a tensioning cable 9, and several pulleys 10a, 10b, 10c, 10d, 10e.

[0043] The traction cable 8 engages with its first traction cable end 8a on the surface element 2.

[0044] The tensioning cable 9 and the traction cable 8 are coupled to each other via a first deflection pulley 10a of the plurality of deflection pulleys 10a, 10b, 10c, 10d, 10e. By loosening or tightening the tensioning cable 9, the position of the first deflection pulley 10a can be changed, thereby influencing the tension of the traction cable 9.

[0045] According to the invention, the cable system 7 additionally has a tensioner 11 which is coupled to the tensioning cable 9 in order to tension this tensioning cable 9 and thus also the surface element 2.

[0046] In addition, the tensioning cable 9 is coupled to the winding shaft 6 for winding and unwinding in opposite directions compared to the surface element 2. Thus, the rotational movement of the winding shaft 6 is also used to operate the cable system 7, which significantly simplifies the handling of the device 4. As can be seen in Fig. 1, the tensioning cable 9, downstream of a second deflection pulley 10b, is coupled with its first tensioning cable end 9a to the winding shaft 6 at its first shaft end 6a. This allows the device 4 to ensure stable and easy handling for automatic pulling and tensioning of the surface element 2. As can be seen in Fig. 1, "after" in the cable guide path is represented as "next in the cable guide path," although this is not necessarily the case.

[0047] The surface element 2 has two corners 2a, 2b. The traction cable 8 engages in the area of ​​these two corners 2a, 2b, specifically at these corners 2a, 2b. These corners 2a, 2b can be designed differently for this purpose. In the exemplary embodiment, the traction cable 8 is fastened with its first traction cable end 8a to the surface element in the area of ​​its first corner 2a via an eyelet (not shown) on the surface element 2 in the cable guide path after the first deflection pulley 10a. In general, it is mentioned that these corners 2a, 2b can have webbing loops, D-rings, sail plates, or eyelets for connecting to the traction cable 8. In addition, the traction cable 8 runs in a loop-forming manner over these first and third deflection pulleys 10a, 10c.

[0048] The coupling between the traction cable 8 and the tensioning cable 9 is achieved via the first deflection pulley 10. This is achieved by the tensioning cable 9 engaging the first deflection pulley 10a with its second end, holding it in place – indirectly, via the first pivot axis of the first deflection pulley 10a, namely via its bracket (not shown), on which this pivot axis is rotatably mounted. The first deflection pulley 10a is therefore anchored by the tensioning cable 9. The third deflection pulley 10c is fixedly attached to a post 5b.

[0049] In addition, the traction cable 8 is guided over an intermediate pulley 12 provided between the first and third deflection pulleys in the cable guide path to prevent contact of the traction cable 8 with the surface element 2. This intermediate pulley 12 is arranged above the surface element, specifically directly above the winding shaft 6. For this purpose, a support cable 13 is stretched between the two supports 5a, 5b, on which support cable 13 the intermediate pulley 12 is slidably mounted in position.

[0050] As can also be seen from Fig. 1, the second deflection pulley 10b guides the tensioning cable 9 to the winding shaft 6 essentially vertically for unwinding and winding – which facilitates the joint winding of the surface element 2 and the tensioning cable 9. Furthermore, the tensioning cable 9 is partially guided in a Z-shape in plan view. For this purpose, the tensioning cable 9 is guided over a fourth deflection pulley 10d and a fifth deflection pulley 10e, which are located in the cable guide path between the first and second deflection pulleys 10a, 10b. The fourth deflection pulley 10d is fixedly attached to a post 5b. The fifth deflection pulley 10e is also fixedly attached to the post 5a.

[0051] As can also be seen from Fig. 1, the surface element 2 is fastened to the winding shaft 6 along a centrally running dividing line 2c. For this purpose, the winding shaft 6 is designed to fasten the surface element along its centrally running dividing line 2c and has a groove (not shown) into which the surface element 2 engages with a piping strip.

[0052] In addition, the second pulley 10b is secured by the tensioner 11 at its second rotational axis, as can be seen in Fig. 1. The tensioner 11 engages the upright 5a for this purpose, which facilitates handling. This is especially true when the tensioner 11 has a multiple pulley block with a locking mechanism designed as a rope clamp.

[0053] A manual drive 15, which in the exemplary embodiment is designed as an endless pulley, is provided for rotating the winding shaft 6. Instead of or in addition to the drive 15, a motor, particularly an electric one, is conceivable, although this is not shown.

[0054] The manual tensioner 11 and the manual drive 15 are arranged in close proximity to each other for their operation at a location in the device 4. This significantly simplifies the operation of the device 4, since all manual activities, such as unwinding and tensioning the surface element 2 or relaxing and winding the surface element 2, can be performed from a single location. Furthermore, the tensioner 11 is also located near a belt tensioner 15, which can be used to rotate the winding shaft 6. The tensioner 11 and belt tensioner 15 are therefore located next to each other, which facilitates operation.

[0055] Instead of or in addition to the tape tension 15, a motor, in particular an electric motor, for rotating the winding shaft 6 is also conceivable, which is not shown.

[0056] In addition, the diameter of the cable winding roller 14 provided on the winding shaft 6 for the tensioning cable 9 is larger than the diameter of the winding shaft 6 on which the surface element 2 is directly wound up and unwound, in order to ensure length compensation between the surface element 2 and the tensioning cable 9 - which facilitates the operation of the shading device 1.

[0057] Second embodiment:

[0058] According to Fig. 2, a second exemplary embodiment of a shading device 101 is shown, comprising a flexible surface element 102 of a sunshade 103 and a device 104 for winding and unwinding the flexible surface element 102. In this exemplary embodiment, the sunshade 103 represents a sun sail.

[0059] For this winding and unwinding of the surface element 102, the device 104 has a winding shaft 106 that is rotatably mounted on a wall 105a, in particular the exterior wall of a building, as shown. The surface element 102 is attached to the winding shaft 106, for example, via clamps.

[0060] The device 104 also has a cable system 107 for pulling and tensioning the surface element 102. This cable system 107 includes at least one pull cable 108, a tension cable 109, and several pulleys 110a, 110b, 110d, 110e, 110f, 110g. The pull cable 108 engages the surface element 102 with its first pull cable end 108a.

[0061] The tensioning cable 109 and the traction cable 108 are coupled to one another via a first deflection pulley 110a of the plurality of deflection pulleys 110a, 110b, 110d, 110e, 110f, 110g. By loosening or tightening the tensioning cable 109, the position of the first deflection pulley 110a can be changed, thereby influencing the tension of the traction cable 109.

[0062] According to the invention, the cable system 107 additionally has at least one tensioner 111 which is coupled to the tensioning cable 109 in order to tension this tensioning cable 109 and thus also the surface element 102.

[0063] In addition, the tensioning cable 109 is coupled to the winding shaft 106 for winding and unwinding in a manner opposite to that of the surface element 102. Thus, the rotational movement of the winding shaft 106 is also used to operate the cable system 107, which significantly simplifies the handling of the shading device 101. As can be seen in Fig. 1, the tensioning cable 109 is coupled with its first tensioning cable end 109a to the winding shaft 106 at its first shaft end 6a after a second deflection pulley 110b. Thus, the device 104 can ensure automatic pulling and tensioning of the surface element 102 in a stable and easy-to-handle manner.

[0064] As can be seen in Fig. 2, "after" is shown as "next in the rope guide path", but this is not necessarily the case.

[0065] As can also be seen from Fig. 2, the second deflection roller 110b guides the tensioning cable 109 to the winding shaft 106 essentially vertically for unwinding and winding, which facilitates the joint winding of the surface element 2 and the tensioning cable 9.

[0066] The surface element 102 has a fastening edge 102c and a removal edge 102d with two corners 102a, 102b. The pull cable 108 engages the surface element 102 with its first pull cable end 108a in the region of its first corner 102a—specifically, at a first distance from this first corner 102a, as shown in Fig. 2.

[0067] The coupling between the traction cable 108 and the tension cable 109 is achieved via the first deflection pulley 110a. This is achieved by the second traction cable end 108b engaging the first deflection pulley 110a, indirectly on the first rotational axis of the first deflection pulley 110a, namely via its bracket (not shown in detail), on which this rotational axis is rotatably mounted. The first deflection pulley 110a is therefore tensioned by the tension cable 109.

[0068] The device 104 also has a second traction cable 180 of the at least one traction cable 108, 180. The second traction cable 180 engages with its first traction cable end 180a on the surface element 102 in the region of its second corner 102b, specifically at the same first distance from this second corner 102b - as can be seen in Fig. 2. The second traction cable end 180b of the second traction cable 180 engages a sixth deflection pulley 110f, indirectly on the first axis of rotation of the sixth deflection pulley 110f, namely via its bracket (not shown in detail), on which this axis of rotation is rotatably mounted. The second traction cable 180 and the tensioning cable 109 are coupled via this sixth deflection pulley 110f. This also allows the position of the sixth deflection pulley 11 Of to be changed by loosening or tightening the tensioning cable 109, whereby the tension of the second traction cable 180 can be influenced.

[0069] In addition, the tension cable 109, guided via a seventh deflection pulley 110g, is coupled by its second tension cable end 109b to the winding shaft 106 at a second shaft end 106b of this winding shaft 106 for unwinding and winding in a manner opposite to that of the surface element. The seventh deflection pulley 110g is fixedly attached to a post 105c. Thus, the seventh deflection pulley 110g guides the tension cable 109 to the winding shaft 106 essentially horizontally for unwinding and winding, which facilitates this unwinding and winding.

[0070] Furthermore, it can be seen in Fig. 2 that the cable system 107 guides the tensioning cable 109 essentially in a U-shape in plan view.

[0071] In addition, the second deflection pulley 110b is secured by the tensioner 111 at its second rotational axis, as can be seen in Fig. 1. The tensioner 111 engages the wall 105a for this purpose. However, a post is also conceivable, which is not shown. A fifth deflection pulley 110e, attached to the wall 105, feeds the tensioning cable 109 to the second deflection pulley 110b. Handling is facilitated because the tensioner 111 has a multiple pulley block with a locking mechanism designed as a cable clamp.

[0072] A manual drive 115, which in the exemplary embodiment is designed as an endless pulley, is provided for rotating the winding shaft 106. Instead of or in addition to the drive 15, a motor, particularly an electric one, is conceivable—but this is not shown in detail.

[0073] The manual tensioner 111 and the manual drive 15 are arranged in close proximity to each other for their operation at a location on the device 104. This significantly simplifies the operation of the device 104, since all manual activities, such as unwinding and tensioning the surface element 102 or relaxing and winding the surface element 102, can be performed from a single location.

[0074] In addition, the diameters of the two cable winding rollers 114a, 114b provided on the winding shaft 106 for the tensioning cable 109 are larger than the diameter of the winding shaft 106 for the surface element 2 in order to ensure length compensation between the surface element 102 and the tensioning cable 109, which facilitates the operation of the shading device 101.

[0075] However, the tensioning cable 109 is not only connected to the surface element 102 via the first and second tension cables 108, 180, but is also coupled via further deflection pulleys which are located in the cable guide path between the first and sixth deflection pulleys 110a, 110f in order to be able to tension the surface element 102 in an improved manner.

[0076] The shading devices 1, 101 according to the invention can be operated, for example, as follows: For winding up or unwinding the flexible surface element 2, 102, the cable tension is first reduced via the tensioner 11, 111, but this does not necessarily have to be the case.

[0077] Subsequently, in the case of unwinding the surface element 2, 102, the desired position of the flexible surface element 2, 102 is adjusted by actuating the drive 15, 115. In the case of winding the surface element 2, this surface element 2 is wound onto the winding shaft 6, 106 by actuating the drive 15, 115.

[0078] The desired tension on the flexible surface element 2, 102 can then be adjusted using the tensioner 11, 111. This can be done in both the unwound and wound position of the surface element 2, 102.

[0079] Further examples:

[0080] However, it is also conceivable for a cable winding roller 214 on the winding shaft 6 to also serve as a tensioner 211 and form this tensioner, as shown in Fig. 3a for the first embodiment according to Fig. 1. In contrast to the cable winding roller 14 of Figure 1, this cable winding roller 214 has a spring 216, for example a torsion spring, which is provided between the winding shaft 6, 106 and the tensioning cable 9. This tensioner 211 is thus coupled to the tensioning cable 9 in order to tension this tensioning cable 9 and thus also the surface element 2. This self-tensioning tensioner 214 eliminates the need for manual operation, which can simplify handling.

[0081] Furthermore, it is conceivable that the tensioner 11 does not tension the second deflection pulley 10b, as shown in Fig. 1, but that this tensioner 11 tensions the fourth deflection pulley 10d, as shown in Fig. 3b. It is conceivable that the fifth deflection pulley 10e is omitted and - as shown in Fig. 3a - the tensioning cable 9 is fed to the winding shaft, namely the cable winding pulley 14, via the second deflection pulley 10b, whereby this can also be the cable winding pulley 214 according to Fig. 3a, which thus acts as an additional tensioner. This cable winding pulley 214 on the winding shaft 6 can also be provided on the second embodiment according to Fig. 2, as shown in Fig. 3c. This cable winding pulley 214 takes up the tensioning cable 109 directly from the second deflection pulley 110b, as also shown in Fig. 3a. Here, too, this self-tightening tensioner 211 is coupled to the tensioning cable 9 in order to tension this tensioning cable 109 and thus also the surface element 102.

[0082] This allows the deflection pulleys 110e, 110d and the tensioner 111 shown in Fig. 2 to be omitted. It may be sufficient to replace the first cable winding pulley 114a shown in Fig. 2 with the cable winding pulley 214, since this tensioner 111 can already tension the tensioning cable 109 and thus also the surface element 102. The second cable winding pulley 114b shown in Fig. 2 can also be retained in the embodiment shown in Fig. 3c or can likewise be replaced by a cable winding pulley 214 in order to increase the tensioning force on the tensioning cable 109 and / or to distribute the mechanical loads between two self-tensioning tensioners 214.

[0083] In general, it is noted that "in particular" can be translated into English as "more particularly." A feature preceded by "in particular" is to be considered an optional feature that can be omitted and thus does not constitute a limitation, for example, of the claims. The same applies to "vorzugsweise," translated into English as "preferably."

Claims

P a t e n t a n s p r ü c h e: 1 . Device (4, 104) for winding and unwinding a flexible surface element (2, 102) of a sun protection device (3, 103), in particular a sun sail, with a rotatably mounted winding shaft (6, 106) for winding and unwinding the surface element (2, 102) and with a cable system (7, 107) provided for pulling and tensioning the surface element (2, 102), which has at least one pulling cable (8, 108, 180), at least one tensioning cable (9, 109) and several deflection rollers (10a, 10b, 10c, 10d, 10e, 110a, 110b, 110d, 110e, 110f, 110g), wherein the pulling cable (8, 108, 180), in particular with its first pulling cable end (8a, 108a, 180a), engages the surface element (2, 102), and wherein the tensioning cable (9, 109) and the traction cable (8, 108, 180) are coupled to one another via a first deflection pulley (10a, 110a, 110f) of the plurality of deflection pulleys (10a, 10b, 10c, 10d, 10e, 110a, 110b, 110d, 110e, 110f, 110g), characterized in that the cable system (7, 107) has at least one with the tensioning cable (9,109) coupled tensioner (11, 111, 211), and that the tensioning cable (9, 109) in the cable guide path after a second deflection roller (10b, 110b) of the plurality of deflection rollers (10a, 10b, 10c, 10d, 10e, 110a, 110b, 110d, 110e, 110f, 110g), in particular with its first tensioning cable end (9a, 109a), is coupled to the winding shaft (6, 106), in particular in the region of its first shaft end (6a, 106a), for unwinding and / or winding in the opposite direction compared to the surface element (2, 102).

2. Device according to claim 1, characterized in that the traction cable (8) in the cable guide path after the first deflection roller (10a), in particular with its first traction cable end (8a), engages the surface element (2), in particular in the region of its first corner (2a), and that the traction cable (8) in the cable guide path after a third, in particular stationary, deflection roller (10c) of the several deflection rollers (10a, 10b, 10c, 10d, 10e), in particular with its second traction cable end (8b), engages the Surface element (2), in particular in the region of its second corner (2b), and that the tensioning cable (9), in particular with its second tensioning cable end (9b), engages the first deflection pulley (10a) in a holding manner, in particular at its first axis of rotation.

3. Device according to claim 2, characterized in that the traction cable (8) is guided over an intermediate roller (12) provided between the first and third deflection rollers (10a, 10c) in the cable guide path, which intermediate roller (12) is arranged above the surface element (2) and, in particular directly, above the winding shaft (6), in particular displaceably.

4. Device according to one of claims 1 to 3, characterized in that the tensioning cable (9) is guided in a Z-shaped manner in plan view between the first and second deflection rollers (10a, 10b) and / or that the winding shaft (6) is designed to fasten the surface element (2) along its dividing line (2c), in particular the dividing line running centrally.

5. Device according to claim 1, characterized in that the traction cable (108) engages with its first traction cable end (108a) on the surface element (102), in particular in the region of its first corner (102a), and with its second traction cable end (108b) on the first deflection roller (110a) in a holding manner, in particular on its first axis of rotation.

6. Device according to claim 5, characterized in that a second traction cable (180) of the at least one traction cable (8, 108, 180) engages with its first traction cable end (180a) on the surface element (102), in particular in the region of its second corner (102b), and with its second traction cable end (180b) engages with a sixth deflection roller (110f) of the plurality of deflection rollers (110a, 110b, 110d, 110e, 110f, 110g), holding them, in particular on their sixth axis of rotation, via which sixth deflection roller (110f) the second traction cable (180) and the tensioning cable (109) are coupled.

7. Device according to one of claims 5 to 6, characterized in that the tensioning cable (109) guided over a seventh deflection roller (110g) of the plurality of deflection rollers (110b, 110f, 110g) is coupled with its second tensioning cable end (109b) to the winding shaft (106), in particular in the region of its second shaft end (106b), for unwinding and winding in the opposite direction compared to the surface element (102).

8. Device according to one of claims 5 to 7, characterized in that the tensioning cable (109) is guided in a substantially U-shaped manner in plan view and / or that the winding shaft (106) is designed to fasten the surface element (102) along its fastening edge (102c).

9. Device according to one of claims 1 to 8, characterized in that the tensioning cable (9, 109) is guided over a fourth deflection pulley (10d, 110d) of the plurality of deflection pulleys (10a, 10b, 10c, 10d, 10e, 110a, 110b, 110d, 110e, 110f, 110g) and optionally over a fifth deflection pulley (10e, 110e) of the plurality of deflection pulleys (10a, 10b, 10c, 10d, 10e, 110a, 110b, 110d, 110e, 110f, 110g), which is or are located in the cable guide path between the first and second deflection pulleys (10a, 10b, 110a, 110b).

10. Device according to one of claims 1 to 9, characterized in that the second deflection roller (10b, 110b) feeds the tensioning cable (9) to the winding shaft (6) substantially vertically.

11. Device according to one of claims 1 to 10, characterized in that the second deflection roller (10b, 110b) is tensioned by the, in particular manual, tensioner (11, 111), in particular by holding it at its second axis of rotation.

12. Device according to one of claims 1 to 11, characterized in that the tensioner (11, 111) has a, in particular multiple, pulley block with a locking device, in particular a rope clamp.

13. Device according to one of claims 1 to 12, characterized in that the winding shaft (6, 106) has a manual drive, in particular with a crank or endless pull, for its rotation, and that the manual tensioner (11, 111) and the manual drive are arranged in close proximity to one another for their actuation at a location of the device (4, 104).

14. Device according to one of claims 1 to 13, characterized in that the diameter of the cable winding roller (14, 114a, 114b, 214) provided on the winding shaft (6, 106) for the tensioning cable (9, 109) is greater than or equal to the diameter of the winding shaft (6, 106).

15. Device according to one of claims 1 to 14, characterized in that the cable winding roller (214) provided on the winding shaft (6, 106) for the tensioning cable (9, 109) forms the tensioner (211), in particular with the aid of at least one spring.

16. Shading device with a flexible surface element (2, 102) of a sun protection device (3, 103), in particular a sun sail, and with a device (4, 104) according to one of claims 1 to 15.

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