Winding system and sun protection device with such a winding system

Abstract

The invention relates to a winding system (1) for winding and unwinding a flat material web (2) onto and from a winding shaft (3). The winding system (1) has a winding shaft (3) with a groove (4) in its outer surface and a profiled connecting device (5). The profiled connecting device (5) has a connecting tab (9) for connecting a flat material web edge (10) to the profiled connecting device (5) and a tab-shaped handle (11). The groove (4) has a recess (6) that extends axially and circumferentially along the winding shaft (3) and under the outer surface of the winding shaft (3). The profiled connecting device (5) can be inserted into the groove (4) and can be detachably clamped in the recess (6) by means of two clamping elements (7a, 7b).By manipulating the tab-shaped handle (11), the profile-shaped connecting device (5) can be elastically bent so that it can be inserted into the groove (4) and clamped in it or removed from the groove (4).

Description

[0001] The invention relates to a winding system for winding and unwinding a flat material web onto and off a winding shaft and a sun protection device with such a winding system.

[0002] In applications where a flat material web is wound onto and / or unwound from a winding shaft, the flat material web must be connectable to the winding shaft for this purpose.

[0003] In order for the flat material web to be wound onto the winding shaft, it must be flexible. This flexibility of the flat material web is typically provided by the mechanical properties of the flat material itself.

[0004] Depending on the application, the flat material can be, for example, a textile, a fabric, a cloth, a woven material, a composite material, a film, a canvas, etc.

[0005] One application where a flat material web is wound onto and unwound from a winding shaft is the sun protection device, for example, an awning. An awning comprises a winding shaft, a flat material web connected to the winding shaft, and an end rail connected to the flat material web. Typically, one edge of the flat material web is connected to the winding shaft and another edge to the end rail, with the winding shaft and end rail extending transversely to the longitudinal direction of the flat material web. The flat material web is also referred to as the awning fabric.

[0006] In its wound state, the flat material web is wound in several layers around the winding shaft in a small space, such that the end rail is located at the winding shaft.

[0007] During the unwinding of the flat material web, the winding shaft is rotated around its axis of rotation, and the flat material web is unwound from the winding shaft in the unwinding direction. The end rail is moved away from the winding shaft in a direction transverse to its longitudinal direction. The end rail exerts a tensile force on the flat material web.

[0008] The end rail can be moved away from the winding shaft, for example, manually, by a manual drive, or by a motorized drive. The end rail can also be moved away from the winding shaft by the force of gravity acting on the end rail.

[0009] In its unwound state, the end rail is spaced apart from the winding shaft. The awning is typically designed so that, in its unwound state, the flat material is held taut by both the end rail and the winding shaft. This means that, in its unwound state, the winding shaft exerts a restoring force on the flat material in a direction perpendicular to and towards the longitudinal axis of the winding shaft, while the end rail exerts a holding force on the flat material in the opposite direction. In its unwound state, the holding force is equal to the restoring force.

[0010] When winding the flat material web, the winding shaft is rotated around its axis of rotation, and the flat material web is wound onto the winding shaft in the winding direction. During this process, the end rail is moved towards the winding shaft in a direction perpendicular to its longitudinal direction. Due to the rotation of the winding shaft and the movement of the end rail towards the winding shaft, the restoring force becomes greater than the holding force.

[0011] It follows that a reliable connection between the flat material web and the winding shaft is necessary for winding and unwinding the flat material web onto and off the winding shaft.

[0012] Awnings are typically used outdoors. During use, the flat material is exposed to the elements. These weather conditions can necessitate the replacement of the flat material.

[0013] Awnings are typically installed outdoors, often in confined and difficult-to-access spaces. The installation process begins with the installation of the roller tube. In a subsequent step, the awning fabric is attached to the roller tube.

[0014] It follows that for the assembly and use of the awning, a detachable and simple connection between the flat material and the winding shaft is necessary.

[0015] The object of the invention is to provide a winding system which enables a simple, detachable and reliable connection of a flat material web to the winding shaft.

[0016] The problem is solved by a winding system according to the features of claim 1. The dependent claims relate to preferred embodiments of the winding system.

[0017] The invention relates to a winding system for winding and unwinding a flat material web onto and off a winding shaft. For this purpose, the winding system comprises a winding shaft whose outer surface has a groove, and a profile-shaped connecting device.

[0018] The groove extends axially along the winding shaft and has a recess that extends axially and circumferentially along the winding shaft and under the outer surface of the winding shaft.

[0019] The profile-shaped connecting device can be inserted into the groove and detachably clamped in the recess. When inserted, the profile-shaped connecting device extends along the groove and has two clamping elements curved away from each other, which, when inserted, can be clamped in the recess under the outer surface. The profile-shaped connecting device has a support element for supporting the wound-up flat material web. The support element connects the clamping elements and holds them at a distance A from each other when clamped. The profile-shaped connecting device has a connecting tab designed to connect a flat material web edge to the profile-shaped connecting device and is connected to the support element.

[0020] Furthermore, the profile-shaped connecting device has a tab-shaped handle and is elastically bendable, particularly in a direction transverse to the longitudinal direction of the profile-shaped connecting device. The tab-shaped handle is connected to the support element in such a way that, by gripping and pulling the tab-shaped handle, the profile-shaped connecting device can be bent in the clamped state in such a way that the distance A decreases, thereby allowing the profile-shaped connecting device to be released from the recess.

[0021] The flat material can be an awning fabric. The flat material or awning fabric can be, for example, a textile, a fabric, or a woven material. The textile, fabric, or woven material can each include synthetic fibers as reinforcing fibers. The flat material can also be, for example, a film or a canvas.

[0022] The winding shaft has a pivot axis around which the winding shaft can be mounted to rotate for winding and unwinding purposes.

[0023] The axial direction refers to the axial direction of the winding shaft, i.e., a direction in the direction of the axis of rotation of the winding shaft, or in the direction of the longitudinal axis of the winding shaft.

[0024] The outer surface of the winding shaft is the surface on which the first layer of the flat material web rests directly during winding.

[0025] The outer surface has a groove. That is, the groove is recessed into the outer surface of the winding shaft and extends towards the inside of the winding shaft.

[0026] As is typical for a groove, this groove includes a groove opening. The groove opening makes the empty cavity formed by the groove accessible for an element to be inserted into the groove. As is typical for a groove, the groove includes a groove base, which faces the groove opening, and groove side walls, which extend from the groove base to the groove opening.

[0027] The connecting device is profile-shaped, meaning it is elongated and can be manufactured, for example, by extrusion, a compression molding process, or a combination thereof. The profile-shaped connecting device can be plastic-based or a plastic profile and may, for example, comprise several interconnected profile elements made of different plastics. The profile-shaped connecting device can also be an aluminum profile.

[0028] The installed state corresponds to the state in which the profile-shaped connecting device is inserted into the groove.

[0029] The jammed state corresponds to the state in which the profile-shaped connecting device, in particular the clamping elements, is jammed in the groove.

[0030] The groove has a recess that extends axially and circumferentially along the winding shaft and beneath its outer surface. This recess comprises a concave area of ​​the groove. The recess, or concave area, may be encompassed by one or both of the groove's side walls, or may form one or both of the groove's side walls.

[0031] The clamping elements can be clamped in the indentation, i.e., in the clamped state, the clamping elements engage in the indentation or protrude into the indentation, so that they are held in the indentation against a radial force to the outside in a form-fit and / or force-fit manner.

[0032] One of the two clamping elements, or in particular both clamping elements, can be a locking element held in the recess by a spring force. This spring force can be provided, for example, by an elastic force resulting from the elastic deformation behavior of the profile-shaped connecting device.

[0033] A clamping element can be hook-shaped, in particular L-shaped, and designed to hook into the recess. This ensures that the profile-shaped connecting device can be reliably secured in the groove.

[0034] The support element serves to support the wound flat material web. That is, when the profile-shaped connecting device is inserted into the groove, the support element is positioned in the groove in such a way that the layers of the flat material web wound onto the winding shaft are supported by the support element in the area of ​​the groove. This prevents the flat material web from protruding into the groove and the groove from becoming visible in the web. This prevents the formation of ridges and / or discoloration in the flat material web.

[0035] The connecting flap is also called a flag. The connecting flap is designed so that a flat material web edge can be joined to it, for example, by welding, sewing, and / or gluing. If the connecting flap is designed so that a flat material web edge can be welded to it, it is also called a weld tongue. The connecting flap can be designed so that joining a flat material web edge to the connecting flap does not substantially increase the thickness of the connecting flap. For example, the connecting flap can be designed so that a flat material web edge is joined to the connecting flap using a thermal welding process, whereby the flat material web edge and the connecting flap are joined together during thermal welding.a flow of one or more materials occurs in such a way that the thickness of the connecting tab does not substantially increase.

[0036] The tab-shaped handle is designed and configured so that it can be grasped manually between two fingers when the profile-shaped connecting device is jammed in the groove. Furthermore, the tab-shaped handle is designed and connected to the support element in such a way that it can be pulled manually, causing the profile-shaped connecting device to bend, thereby reducing the distance A and allowing the profile-shaped connecting device to be released from the recess.

[0037] The tab-shaped handle, its connection with the support element and the design of the profile-shaped connecting device enable the elastic deformation of the profile-shaped connecting device by manipulating the tab-shaped handle in such a way that the distance A between the two clamping elements can be reduced to such an extent that the clamping elements come out of the indentation and thus the profile-shaped connecting device releases itself from the clamping.

[0038] This provides a winding system that enables a simple, detachable and reliable connection of a flat material web to the winding shaft.

[0039] Furthermore, this provides a winding system that prevents the formation of bulges and / or the occurrence of color changes in the flat material web.

[0040] According to one embodiment, the support element of the profile-shaped connecting device, in the clamped state, extends transversely to the clamping elements and between the clamping elements in the groove opening of the slot in an axial direction along the winding shaft, with the support element essentially closing the groove opening.

[0041] This means the support element closes the groove opening in such a way that the flat material web cannot sink into the groove. This ensures that no ridges form and / or color changes occur in the flat material web.

[0042] According to one embodiment, the tab-shaped handle is connected to the support element and designed in such a way that the tab-shaped handle of the profile-shaped connecting device rests on the outer surface of the winding shaft in the clamped state and conforms to the outer surface of the winding shaft.

[0043] By resting on and forming against the outer surface of the winding shaft, the transition from the outer surface of the winding shaft to the surface of the profile-shaped connecting device is prevented from becoming visible in the wound flat material web.

[0044] The thickness of the tab-shaped handle can increase ramp-like towards the support element.

[0045] According to one embodiment, the tab-shaped handle is connected to the support element and designed in such a way that the tab-shaped handle of the profile-shaped connecting device can be pivoted in a pivoting direction away from the winding shaft, in particular away from the outer surface of the winding shaft, when clamped, and can therefore be grasped by hand.

[0046] This allows the tab-shaped handle to be lifted far enough so that it can be grasped between two fingers and thus pulled.

[0047] According to one embodiment, the profile-shaped connecting device has a strip of material, wherein the strip of material is connected to the support element in an area extending between the longitudinal edges of the strip in the longitudinal direction of the strip, and is configured such that a first edge region of the strip of material projects beyond the support element and one of the clamping elements in a direction transverse to the longitudinal direction of the strip of material, a second edge region of the strip of material projects beyond the support element and the other of the clamping elements in a direction transverse to the longitudinal direction of the strip of material, the tab-shaped handle of the profile-shaped connecting device is formed by the first edge region in the clamped state, the first edge region rests on one side of the groove opening of the groove on the outer surface of the winding shaft and is formed against the outer surface of the winding shaft.The connecting tab of the profile-shaped connecting device is formed by the second edge area in the clamped state, and the second edge area rests on the outer surface of the winding shaft on the other side of the groove opening opposite one side and forms itself against the outer surface of the winding shaft.

[0048] According to one embodiment, the support element has a thickness T in a direction transverse to the surface of the support element, and the respective outer surfaces of the clamping elements have a maximum distance B of 3 times T ≤ B ≤ 9 times T in a direction transverse to the longitudinal direction of the profile-shaped connecting device.

[0049] Because the maximum distance B is 3 times T ≤ B ≤ 9 times T, the profile-shaped connecting device in the jammed state can be bent by manipulating the tab-shaped handle so that the distance A decreases, thereby allowing the profile-shaped connecting device to be released from the indentation.

[0050] This means that the strength T of the support element, determined in this way, allows the support element to be bent by manipulating the tab-shaped handle.

[0051] According to one embodiment, the support element comprises a groove extending longitudinally in the surface of the profile-shaped connecting device, wherein the support element has a thickness t in the region of the groove in a direction transverse to the surface of the support element. The thickness of the support element is then reduced to thickness t in the region of the groove. The groove can be arranged, particularly centrally, between the clamping elements. The groove can be formed in the surface of the support element such that, in the installed state of the profile-shaped connecting device, the groove faces the axis of rotation of the winding shaft. The respective outer surfaces of the clamping elements can have a maximum distance B of 10 times t ≤ B ≤ 30 times t in a direction transverse to the longitudinal direction of the profile-shaped connecting device.

[0052] A groove in the support element creates a predetermined bending point. This predetermined bending point allows for controlled bending of the profile-shaped connecting device.

[0053] The maximum distance B is the distance between the respective outer surface areas that are furthest apart in a direction transverse, in particular perpendicular, to the longitudinal direction of the profile-shaped connecting device.

[0054] According to one embodiment, the support element and the clamping elements are formed in one piece.

[0055] This means that the support element and the clamping elements are made from a single piece of the same material.

[0056] According to one embodiment, the winding shaft has a circumferentially flattened area, the groove runs in the flattened area, and the flattened area is designed and the profile-shaped connecting device is dimensioned such that the profile-shaped connecting device is arranged within the radius of the winding shaft in the clamped state.

[0057] The flattened area extends axially along the winding shaft.

[0058] The flattened area is a region of the winding shaft that has a distance to the axis of rotation of the winding shaft that is smaller than the radius of the winding shaft.

[0059] The outward-facing surface of the profile-shaped connecting device can, in the clamped state, have a bending radius that essentially corresponds to the radius of the winding shaft.

[0060] This ensures that the transition from the outer surface of the winding shaft to the surface of the profile-shaped connecting device and from the surface of the profile-shaped connecting device to the outer surface of the winding shaft is not visible in the wound flat material web.

[0061] According to one embodiment, the winding shaft and the profile-shaped connecting device are designed and coordinated in such a way that the axis of rotation and the main axis of inertia of the winding shaft coincide with the profile-shaped connecting device in the clamped state.

[0062] This makes it possible to wind and unwind with a force that exhibits a uniform force profile.

[0063] According to one embodiment, the groove side walls are symmetrical to each other.

[0064] The groove side walls can be symmetrical to each other with respect to a plane of symmetry that encompasses the axis of rotation of the winding shaft and extends centrally through the groove. This allows for flexible mounting of the winding shaft, because it is not necessary to pay attention to which end of the winding shaft is mounted in which position.

[0065] According to one embodiment, the support element is elastically bendable, and the support element of the profile-shaped connecting device is bendable in the clamped state in such a way that the distance A is reduced, whereby the profile-shaped connecting device can be released from the indentation.

[0066] Elastically bendable means that the bending is essentially reversible.

[0067] According to one embodiment, one of the clamping elements is elastically bendable, and in the clamped state, one of the clamping elements of the profile-shaped connecting device is bendable in such a way that the distance A is reduced, thereby allowing the profile-shaped connecting device to be released from the indentation.

[0068] According to one embodiment, the winding system has a flat material web, wherein a flat material web edge of the flat material web is connected to the connecting tab, so that the flat material web can be wound onto and unwound from the winding shaft.

[0069] The invention also relates to a sun protection device with a previously described winding system.

[0070] The invention also relates to the use of a previously described winding system for winding and unwinding a flat material web onto and off a winding shaft, in particular wherein the flat material web is a flat material web of a sun protection device.

[0071] The winding system according to the invention is described in more detail below by way of example, using specific embodiments shown in the figures. These show: Figure 1 shows a winding system with a wound-up flat material web; Figure 2 shows the winding system with the wound-up flat material web made of Figure 1 in enlarged view; Figure 3 shows a sectional view of a winding system with a wound flat material web; Figure 4 shows steps of inserting and clamping the profile-shaped connecting device into the groove of a winding shaft; and Figure 5 shows steps of releasing the profile-shaped connecting device from the groove of a winding shaft.

[0072] Figure 1 Figure 1 shows a winding system 1 with a flat material web 2, a winding shaft 3, and a profile-shaped connecting device 5 in the clamped state. Part of the flat material web 2 is wound onto the winding shaft 3. The winding shaft 3 is rotatable about the axis of rotation 17 for winding and unwinding the flat material web 2. The winding shaft 3 and the profile-shaped connecting device 5 are designed and aligned such that the axis of rotation 17 and the main axis of inertia 18 of the winding shaft 3 coincide with the profile-shaped connecting device 5 in the clamped state. Figure 1 shows an exposed flat material web edge 10.

[0073] Figure 2 This shows in Figure 1 shown winding system 1 with the in Figure 1 The elements shown are displayed in an enlarged view. Furthermore, it shows... Figure 2a clamping element 7a, the support element 8 and the tab-shaped handle 11 of the profile-shaped connecting device 5.

[0074] Figure 3 Figure 1 shows a winding system 1 for winding and unwinding a flat material web 2 onto and from a winding shaft 3. The outer surface of the winding shaft 3 has a groove 4 and a profile-shaped connecting device 5.

[0075] The groove 4 extends axially along the winding shaft 3 and has a recess 6 which extends axially and circumferentially along the winding shaft 3 and under the outer surface of the winding shaft 3.

[0076] The profile-shaped connecting device 5 is shown inserted in the groove 4 and detachably clamped in the recess 6. The profile-shaped connecting device 5 extends along the groove 4 and has two clamping elements 7a, 7b curved away from each other, which are clamped under the outer surface in the recess 6. The profile-shaped connecting device 5 has a support element 8 for supporting the wound-up flat material web 2. The support element 8 connects the clamping elements 7a, 7b and holds them at a distance A from each other when clamped. The profile-shaped connecting device 5 has a connecting tab 9, which is connected to a flat material web edge 10 and to the support element 8.

[0077] Furthermore, the profile-shaped connecting device 5 has a tab-shaped handle 11. The tab-shaped handle 11 is connected to the support element 8 in such a way that, by gripping and pulling the tab-shaped handle 11, the profile-shaped connecting device 5 can be bent in the clamped state so that the distance A, see Figure 4 , reduced, whereby the profile-shaped connecting device 5 can be released from the indentation 6.

[0078] The winding shaft 3 has a pivot axis 17, about which the winding shaft 3 can be mounted to rotate for winding and unwinding purposes.

[0079] The indentation 6 relates to a concave surface area of ​​the groove 4. The indentation 6, or the concave surface area, forms the two groove side walls of the groove 4.

[0080] The clamping elements 7a, 7b engage in the indentation 6 or project into the indentation 6, so that they are held in the indentation 6 against a radial force to the outside by means of a form-fit and / or force-fit.

[0081] The support element 8 serves to support the wound-up flat material web 2. That is, the layers of the flat material web 2 wound onto the winding shaft 3 are supported by the support element 8 in the area of ​​the groove 4, thus preventing the groove 4 from becoming visible in the flat material web 2. This prevents the formation of ridges and / or discoloration in the flat material web 2.

[0082] The connecting tab 9 is designed such that a connection of the flat material web edge 10 with the connecting tab 9 does not substantially increase the thickness of the connecting tab 9.

[0083] Figure 4Figure 1 shows a sequence of three illustrations of a winding system 1 with a winding shaft 3 and a profile-shaped connecting device 5. The three illustrations show the insertion and clamping of the profile-shaped connecting device into the groove 4 of the winding shaft 3.

[0084] The profile-shaped connecting device 5 has a material strip 13, wherein the material strip 13 is connected to the support element 8 in a region extending between the longitudinal edges 14a, 14b of the material strip 13 in the longitudinal direction of the material strip 13 and is configured such that a first edge region 15a of the material strip 13 projects beyond the support element 8 and one of the clamping elements 7b in a direction transverse to the longitudinal direction of the material strip 13, a second edge region 15b of the material strip 13 projects beyond the support element 8 and the other of the clamping elements 7a in a direction transverse to the longitudinal direction of the material strip 13, the tab-shaped handle 11 of the profile-shaped connecting device 5 is formed by the first edge region 15a, the first edge region 15a, in the clamped state, rests on one side of the groove opening 12 on the outer surface of the winding shaft 3 and is formed by the Outer surface of the winding shaft 3 is shaped,the connecting tab 9 of the profile-shaped connecting device 4 is formed by the second edge region 15b, and the second edge region 15b rests on the outer surface of the winding shaft 3 on the other side opposite one side of the groove opening 12 and forms itself against the outer surface of the winding shaft 3.

[0085] The groove side walls 19 encompass the indentation 6 or the concave surface area, or the indentation 6 or the concave surface area form the two groove side walls 19.

[0086] The uppermost of the three illustrations shows the profile-shaped connecting device 5 in the state inserted into the groove 4. For this purpose, the clamping element 7a, which is hook-shaped, is inserted into the recess 6. By applying a force F to the tab-shaped handle 11 in the area of ​​the clamping element 7b, the second clamping element can be pivoted into the recess 6, and the clamping elements 7a and 7b can be clamped in the recess 6. During pivoting, the support element 8 bends elastically, thereby reducing the distance A between the clamping elements 7a and 7b. After pivoting, the distance A between the clamping elements 7a and 7b increases due to the elastic restoring force, and the clamping elements 7a and 7b are clamped in the recess 6.

[0087] Figure 5 shows a sequence of three illustrations of the winding system 1 of the Figure 4The three illustrations show the release of the profile-shaped connecting device 5 from the indentation 6 or the groove 4 of the winding shaft 3.

[0088] The tab-shaped handle 11 is connected to the support element 8 and designed such that it can pivot away from the outer surface of the winding shaft 3 in a pivoting direction, thus allowing it to be grasped manually. By grasping and pulling the tab-shaped handle 11 with a force F, the clamping element 7b can be pivoted out of the recess 6. When pivoting out of the recess 6, the support element 8 bends elastically, thereby reducing the distance A between the clamping elements 7a and 7b. After the clamping element 7b has pivoted out of the recess 6, the clamping element 7a can be removed from the recess 6.

Claims

1. Winding system (1) for winding and unwinding a flat material web (2) onto and off a winding shaft (3) comprising a winding shaft (3) having a groove (4) on its outer surface and a profile-shaped connecting device (5), wherein the groove (4) extends axially along the winding shaft (3), has a recess (6) extending axially and circumferentially along the winding shaft (3) and under the outer surface of the winding shaft (3), the profile-shaped connecting device (5) can be inserted into the groove (4), can be detachably clamped in the recess (6), extends along the groove (4) in the inserted state, has two clamping elements (7a, 7b) curved away from each other which can be clamped under the outer surface in the recess (6) in the inserted state, and has a support element (8) for supporting the wound flat material web (2), which holds the clamping elements (7a,7b) connects and holds them at a distance A from each other in the clamped state, and has a connecting tab (9) designed to connect a flat material web edge (10) to the profile-shaped connecting device (5), and is connected to the support element (8), , characterized by the fact that the profile-shaped connecting device (5) has a tab-shaped handle (11), the profile-shaped connecting device (5) is elastically bendable, and the tab-shaped handle (11) is connected to the support element (8) in such a way that by gripping and pulling the tab-shaped handle the profile-shaped connecting device (5) in the clamped state can be bent so that the distance A is reduced, whereby the profile-shaped connecting device (5) can be released from the indentation (6).

2. Winding system (1) according to claim 1, characterized by the fact thatthe support element (8) of the profile-shaped connecting device (5) in the clamped state runs transversely to the clamping elements (7a, 7b) and between the clamping elements (7a, 7b) in the groove opening (12) of the groove (4) in an axial direction along the winding shaft (3), and substantially closes the groove opening (12).

3. Winding system (1) according to one of claims 1 to 2, characterized by the fact that the tab-shaped handle (11) is connected to the support element (8) and designed in such a way that the tab-shaped handle (8) of the profile-shaped connecting device (5) rests on the outer surface of the winding shaft (3) in the clamped state and conforms to the outer surface of the winding shaft (3).

4. Winding system (1) according to one of claims 1 to 3, characterized by the fact thatthe tab-shaped handle (11) is connected to the support element (8) and designed in such a way that the tab-shaped handle (11) of the profile-shaped connecting device (5) can be pivoted in a pivoting direction away from the winding shaft (3), in particular away from the outer surface of the winding shaft (3), in the clamped state and can therefore be grasped by hand.

5. Winding system (1) according to one of claims 1 to 4, characterized by the fact thatThe profile-shaped connecting device (5) has a material strip (13), wherein the material strip (13) is connected to the support element (8) in a region extending between the longitudinal edges (14a, 14b) of the material strip in the longitudinal direction of the material strip (13) and is configured such that a first edge region (15a) of the material strip (13) projects beyond the support element (8) and one of the clamping elements (7a, 7b) in a direction transverse to the longitudinal direction of the material strip (13), a second edge region (15b) of the material strip (13) projects beyond the support element (8) and the other of the clamping elements (7a, 7b) in a direction transverse to the longitudinal direction of the material strip (13), and the tab-shaped handle (11) of the profile-shaped connecting device (5) is formed by the first edge region (15a) in the clamped state.the first edge region (15a) on one side of the groove opening (12) of the groove (4) rests on the outer surface of the winding shaft (3) and forms a shape against the outer surface of the winding shaft (3), the connecting tab (9) of the profile-shaped connecting device (5) is formed by the second edge region (15b) in the clamped state, and the second edge region (15b) on the other side of the groove opening (12) opposite the first side rests on the outer surface of the winding shaft (3) and forms a shape against the outer surface of the winding shaft (3).

6. Winding system (1) according to any one of claims 1 to 5, characterized by the fact that the support element (8) has a thickness T in a direction transverse to the surface of the support element (8) and the respective outer surfaces of the clamping elements (7a, 7b) have a maximum distance B of 3 times T ≤ B ≤ 9 times T in a direction transverse to the longitudinal direction of the profile-shaped connecting device (5).

7. Winding system (1) according to any one of claims 1 to 6, characterized by the fact that the support element (8) and the clamping elements (7a, 7b) are formed in one piece.

8. Winding system (1) according to any one of claims 1 to 7, characterized by the fact that the winding shaft (3) has a circumferentially flattened area, the groove (4) runs in the flattened area, and the flattened area is designed and the profile-shaped connecting device (5) is dimensioned such that the profile-shaped connecting device (5) is arranged within the radius (16) of the winding shaft (3) in the clamped state.

9. Winding system (1) according to claim 8, characterized by the fact that the winding shaft (3) and the profile-shaped connecting device (5) are designed and aligned such that the axis of rotation (17) and the main axis of inertia (18) of the winding shaft (3) coincide with the profile-shaped connecting device (5) in the clamped state.

10. Winding system (1) according to any one of claims 1 to 9, characterized by the fact thatthe groove side walls (19) are symmetrical to each other.

11. Winding system (1) according to any one of claims 1 to 10, characterized by the fact that the support element (8) is elastically bendable, and the support element (8) of the profile-shaped connecting device (5) is bendable in the clamped state so that the distance A is reduced, whereby the profile-shaped connecting device (5) can be released from the indentation (6).

12. Winding system (1) according to any one of claims 1 to 11, characterized by the fact that one of the clamping elements (7a, 7b) is elastically bendable, and one of the clamping elements (7a, 7b) of the profile-shaped connecting device (5) is bendable in the clamped state so that the distance A is reduced, whereby the profile-shaped connecting device (5) can be released from the indentation (6).

13. Winding system (1) according to any one of claims 1 to 12, characterized by the fact thatthe winding system (1) has a flat material web (2), wherein a flat material web edge (10) of the flat material web (2) is connected to the connecting tab (9), so that the flat material web (2) can be wound onto and unwound from the winding shaft (3).

14. Sun protection device with a winding system (1) according to claim 13.

15. Use of a winding system (1) according to one of claims 1 to 13 for winding and unwinding a flat material web (2) onto and off a winding shaft (3), in particular wherein the flat material web (2) is a flat material web (2) of a sun protection device.

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