Guide device for a curtain and curtain system

Abstract

Guide device (5, 5') for a blind (2), in particular for shading, darkening, protection against insects and / or the like, comprising a support rail (6) with at least one receiving area (7) formed along a longitudinal extension of the support rail (6), and at least one opening section (8) extending at least partially along the receiving area (7) of the support rail (6), and a guide rail (11) which can be arranged in the receiving area (7) corresponding to the opening section (8) in order to guide the blind (2) during unwinding and / or winding, wherein the guide rail (11) is received in the receiving area (7) with at least one degree of freedom for longitudinal expansion.

Description

[0001] The invention relates to a guide device for a curtain according to the preamble of claim 1 and to a curtain system.

[0002] Blind systems are known that provide shade, darken a room, or provide protection from insects and are installed, for example, in window or door openings. In such blind systems, the blind is usually housed in a blind box that can be wound up and down, with lateral guide rails extending downward from the box to guide the blind during winding and unwinding. For reliable operation and reduced wear, these guide rails can be made of a friction-minimizing material, such as plastic, and can also be attached to metal support rails for increased stability.However, due to the use of different materials, the guide and support rails have different expansion properties, which can lead to impaired operation or even damage due to deformation in the event of temperature changes, for example due to exposure to sunlight.

[0003] The invention is based on the object of providing a guide device for a curtain which enables reliable operation, has a simple structure and enables user-friendly installation.

[0004] This object is achieved by a guide device according to claim 1.

[0005] The invention is based on the further object of further developing a curtain system in such a way that it enables reliable operation.

[0006] This further object is achieved by a curtain system according to claim 13.

[0007] The guide device for a curtain, in particular for shading, darkening, protection against insects and / or the like, comprises a support rail with at least one receiving area which is formed along a longitudinal extent of the support rail, and at least one opening section which extends at least partially along the receiving area of ​​the support rail, and a guide rail which can be arranged in the receiving area corresponding to the opening section in order to guide the curtain during unwinding and / or winding, wherein the guide rail is received in the receiving area with at least one degree of freedom for longitudinal expansion.

[0008] The guide device forms a guide for the curtain during unwinding and / or winding and can stretch the curtain over its entire surface, for example to provide shading, darkening, protection against insects and / or the like for a window opening and / or a door opening. For shading and / or darkening, the curtain can preferably be made of a cloth-like material, for example a woven fabric, a warp-knitted fabric, a braid, or even of a film-like material, for example a tarpaulin. Alternatively, the curtain can also be made, at least in sections, of a gauze, a braid, or a grid to provide protection against insects. The curtain element can preferably be made of a plastic material.

[0009] The curtain preferably has a flat, extending basic shape defined by lateral edge regions. Preferably, a lateral edge region of the curtain is guided by the guide device during unwinding and / or winding. In particular, two guide devices can be provided spaced apart from one another to guide the lateral, opposing edge regions of the curtain during unwinding and / or winding.

[0010] The provision of the guide rail for guiding the curtain can ensure functionally reliable operation during unwinding and / or winding. The support rail can also provide structural strength for the guide device. Environmental influences, in particular temperature and solar exposure, can lead to thermal expansion in the guide device, whereby significant linear expansion can occur depending on the material of the guide rail and / or the support rail. By accommodating the guide rail in the receiving area in such a way that it can expand with at least one degree of freedom in its longitudinal direction, it can be ensured that even in the event of large temperature differences, no stresses or deformations occur in the guide device, in particular in the guide rail accommodated in the receiving section of the support rail.

[0011] Preventing deformation of the guide rail can, in particular, prevent the formation of wrinkles or waves in the curtain, which not only improves the visual appearance of the curtain when unwound, but also reduces wear during unwinding and / or winding. The guide device can thus enable optimized and reliable operation.

[0012] A further development of the guide device can provide that the support rail has a fastening device for the guide rail or that a fastening device for the guide rail is assigned to the support rail and that the guide rail can be fastened in a statically underdetermined manner in the receiving area by the fastening device.

[0013] The fastening device can form a support for the guide rail in the at least one receiving area. In particular, the guide rail is fixed by the fastening device only at one section or at one position, so that the guide rail is received in the receiving area with at least one fastening-free end section. Preferably, the guide rail can be coupled to the fastening device at only one end section. This allows an opposite end section of the guide rail to be provided without fastening and to undergo linear expansion, for example, due to the effects of temperature.

[0014] Consequently, the term "statically underdetermined fastening or mounting of the guide rail" within the context of this description and the claims is to be understood as meaning that the guide rail has only one section, in particular an end section, fixed relative to the support rail in the receiving area, thereby forming at least one degree of freedom for longitudinal expansion in the longitudinal direction. In other words, the guide rail is mounted by only one bearing point in the receiving area of ​​the support rail.

[0015] Advantageously, the guide device can be provided with at least one coupling element on the guide rail, preferably on an end section of the guide rail, by means of which the guide rail can be coupled to the fastening device.

[0016] The at least one coupling element can preferably provide for a releasable fastening of the guide rail to the fastening device. The at least one coupling element can be designed, for example, as a recess, an opening, a projection, or the like, and can be coupled to a corresponding holding or fastening element of the fastening device. Preferably, one or more recesses or openings can be formed on the guide rail, in particular at the end section of the guide rail, which can be coupled to one or more correspondingly designed holding elements of the fastening device.

[0017] Alternatively, the at least one coupling element and the fastening device can also form a snap-in connection, clip connection, screw connection, rivet connection, or the like. Likewise, the guide rail can also be permanently connected to the fastening device, for example, by a welded connection, soldered connection, or the like.

[0018] In one embodiment of the guide device, when the support rail is aligned longitudinally in the direction of gravity, the guide rail can be mounted in the receiving area in a substantially suspended manner by the fastening device.

[0019] Preferably, in the longitudinal alignment of the support rail in the direction of gravity, it can be provided that the bearing of the guide rail is provided at an upper end section of the guide rail, so that the guide rail is mounted substantially suspended in the receiving area.

[0020] Such a mounting of the guide rail can advantageously be designed such that the fastening device has one or more holding elements on which the guide rail can be arranged with the at least one coupling element, preferably the recess. In other words, the guide rail can be suspended from the one or more holding elements by the at least one coupling element.

[0021] A further development of the guide device can also provide that a compensation section for the longitudinal expansion of the guide rail is provided in the at least one receiving area.

[0022] Preferably, the compensation section can be formed in that the guide rail has a shorter extension length than the extension length of the receiving area. In this way, a section can be formed in the at least one receiving area into which the guide rail can expand upon a thermal change in length.

[0023] When the connecting device is oriented in the direction of gravity, the compensation section is preferably formed in a lower portion of the support rail's receiving area. This allows the guide rail to expand freely in the direction of gravity.

[0024] The length difference between the guide rail and the at least one receiving area can be adjusted depending on the thermal expansion coefficient of the guide rail material and / or on the total length of the guide rail and the at least one receiving area. For example, the guide rail can be at least 10 mm, preferably at least 25 mm, more preferably at least 50 mm, shorter than the at least one receiving area of ​​the support rail.

[0025] Advantageously, in the guide device, the material of the guide rail can have a larger thermal expansion coefficient than the material of the support rail.

[0026] Preferably, the guide rail can be formed at least in sections from a plastic material; for example, the guide rail can be formed from a thermoplastic material. The guide rail is preferably formed as an elongated profile body. For example, the guide rail is formed as an extruded profile.

[0027] The support rail is formed, at least in sections, from a metallic material, preferably aluminum. The support rail is preferably designed as an elongated profile body. For example, the support rail is designed as an extruded profile, in particular an extruded aluminum profile.

[0028] In addition, the guide device can advantageously be provided with a guide rail having a guide groove for guiding the curtain, preferably a lateral edge region of the curtain.

[0029] For this purpose, the guide groove can be designed as a groove extending straight along the guide rail, with the lateral edge regions of the curtain being accommodated in the guide groove during unwinding and / or winding. Advantageously, the guide groove can be provided with one or more lateral undercuts along the longitudinal extent of the guide groove. In this case, the curtain can be designed with a corresponding piping or extension along the opposing lateral edge regions, which engages behind the undercuts formed by the guide groove during unwinding and / or winding and is thus securely guided in the guide groove.

[0030] In a further development of the guide device, the guide rail can have a positioning device that positions the guide rail in the receiving area transversely to the longitudinal extent such that the guide rail is associated with the opening section of the receiving area. Preferably, the positioning device can position the guide rail in the receiving area transversely to the longitudinal extent such that the guide groove is associated with the opening section of the receiving area.

[0031] Such a positioning device can prevent movement or play of the guide rail in the receiving area transverse to its longitudinal extent and enable the expansion of the guide rail in the direction of its longitudinal extent. The positioning device can be formed either in sections or regions or continuously along the guide rail. In particular, the positioning device can have flexible properties at least in certain regions in order to be easily fitted into the receiving area.

[0032] In a further development of the guide device, the positioning device can have at least one flexible positioning element which extends at least partially along the guide rail and rests against at least one inner wall of the receiving area for positioning the guide rail.

[0033] Such a flexible positioning element can ensure secure contact with the at least one inner wall of the receiving area and thus positioning of the guide rail, and at the same time, when the guide rail expands longitudinally, a relative movement of the at least one positioning element to the inner wall can be enabled. The at least one flexible positioning element can be projection-like, wing-shaped, or lip-shaped. For example, the at least one positioning element can extend as a flexible projection, flexible wing, or flexible lip, at least in sections, along the guide rail. Preferably, the positioning device comprises two flexible positioning elements that extend at least in sections along the guide rail, preferably on both sides along the guide groove of the guide rail.

[0034] A further embodiment of the guide device can also provide that a section of the guide rail, preferably an end section of the guide rail, on which the at least one coupling element is provided, is designed to be free of positioning devices.

[0035] In other words, the positioning device extending at least partially along the guide rail does not extend over the entire longitudinal extent of the guide rail. Preferably, the section, in particular the end section, of the guide rail on which the at least one coupling element is formed is designed without the positioning device. For example, a distance of at least 20 mm, preferably at least 50 mm, more preferably at least 100 mm, is formed between an end section of the positioning device and the at least one coupling element. In this way, it can be achieved that the guide rail is not positioned by the positioning device in the region of the end section, so that a certain mobility of the guide rail or a certain play in the region of the fastening device transverse to the longitudinal extent of the guide rail is achieved.

[0036] Advantageously, the guide device can be provided with a guide device for inserting the curtain into the guide rail, wherein the guide device is assigned to an insertion opening of the guide rail and preferably has a guide surface for the curtain directed towards the insertion opening.

[0037] If the guide device is aligned in the direction of gravity, the guide unit can be arranged above the guide rail, preferably in a substantially horizontal orientation. The guide unit is configured such that the curtain slides over the guide surface during unwinding in order to be cleanly inserted into the insertion opening of the guide rail, and slides over the guide surface during winding up in order to be cleanly guided out of the guide rail. For this purpose, an angle of inclination of the guide surface of the guide unit can be aligned substantially flush with the insertion opening and / or the guide groove of the guide rail. The guide surface can have a convex-shaped surface. The guide device can therefore prevent the curtain from becoming tilted or being guided over an edge during unwinding and / or winding up, whereby wear and tear on the curtain can be minimized.

[0038] A further advantageous embodiment of the guide device can provide that the support rail has a detachable cover element which, in a coupled configuration, covers the receiving area at least in part and, in a decoupled configuration, forms an access for inserting the guide rail into the receiving area.

[0039] The cover element can form a lid element, a housing element, or a rail element, which can be coupled to the support rail to cover the at least one receiving area. The cover element can be completely decoupled or removed from the support rail. Advantageously, the cover element extends along the entire longitudinal extent of the receiving area or the support rail. The detachable connection between the cover element and the support rail can be formed by a snap-in, plug-in, or clip connection.

[0040] The curtain system according to the invention comprises a curtain, in particular for shading, darkening, protection against insects and / or the like, and at least one guide device for guiding the curtain during unwinding and / or winding, wherein the guide device is designed according to one of the previously described embodiments.

[0041] The curtain system can particularly preferably provide for two guide devices to be arranged at a distance from one another, so that the lateral edge regions of the curtain are guided by the two guide devices during unwinding and / or winding, and the curtain can be stretched between the two guide devices. In particular, the two guide devices are arranged parallel and spaced from one another.

[0042] Such a curtain system is preferably intended for a window opening or a door opening and can be attached to an exterior facade, a window frame, or a door frame. The curtain system can be adapted to any window and / or door type, in particular window and / or door sizes or window and / or door shapes.

[0043] For shading and / or darkening, the curtain can preferably be made of a cloth-like material, for example a woven fabric, a warp-knitted fabric, a braid, or the like, or of a film-like material such as a tarpaulin, or for insect protection, of a gauze, a braid, or the like. In particular, the curtain can be accommodated in a curtain box so that it can be unwound and / or wound up.

[0044] Further features of the invention will become apparent from the description and the drawing, which illustrates an exemplary embodiment of the invention described in detail below. They show: Fig. 1 a schematic, perspective view of the curtain system according to the invention, Fig. 2 a schematic, perspective view of a guide device of the curtain system in Fig. 1, Fig. 3 a schematic side view of the guide device in Fig. 2, Fig. 4 a further schematic side view of the guide device, Fig. 5 a further schematic side view of the guide device, Fig. 6 a schematic sectional view of a guide rail of the guide device, Fig. 7 a schematic, perspective detailed view of a fastening and guiding device of the guiding device, Fig. 8 a schematic side view of the fastening and guiding device in Fig. 7.

[0045] Fig. Figure 1 shows an exemplary embodiment of a curtain system 1 in a schematic, perspective view. The curtain system 1 comprises a curtain 2 and a coupling device 3 to which the curtain 2 is attached. In the illustrated embodiment, the curtain system 1 is mounted on an exterior facade 30 of a building in front of a window 31. Alternatively, the curtain system 1 can also be mounted inside the building in front of the window 31.

[0046] The coupling device 3 comprises a curtain box 4, which is arranged above the window 31. The curtain box 4 is mounted on the outer facade 30, in particular screwed thereto. A winding roller (not shown in detail) is accommodated in the curtain box 4, which is rotatably mounted about a rotation axis for winding and unwinding the curtain 2.

[0047] Two guide devices 5, 5' are provided on the side of the window 31, aligned vertically. These guide devices 5, 5' extend vertically downwards from the curtain box 4 along both side areas of the window 31. In particular, the guide devices 5, 5' are arranged parallel to one another at a distance that essentially corresponds to the window width of the window 31. The guide devices 5, 5' are mounted, in particular screwed, to the outer facade 30. The curtain box 4 and the guide devices 5, 5' can form a single unit or be combined into one unit.

[0048] Alternatively, the curtain box 4 and / or the guide devices 5, 5' can also be attached to a window frame of the window 31. The curtain system 1 can be adapted to any window type, in particular window sizes and / or window shapes, or to openings to be curtained accordingly.

[0049] The curtain 2 is preferably intended for shading or darkening, for example, made of a cloth-like material. The curtain 2 can also be intended for protection against insects, for example, as an insect screen.

[0050] For shading, darkening, and / or insect protection, the curtain 2 can be unwound from the winding roll in the curtain box 4. When unwinding the curtain 2 from the winding roll, lateral edge areas of the curtain 2 are guided through the guide devices 5, 5'. When raising the curtain 2, it is rewound onto the winding roll and accommodated in the curtain box 4. The winding roll can be motor-driven or manually operated, particularly by an operator.

[0051] The Fig. 2 to 5 show schematic views of an embodiment of a guide device 5 of the guide devices 5, 5' according to the invention, wherein Fig. 2 shows a perspective view of the guide device 5 and the Fig. 3 to 5 each show side views of the guide device 5 from different directions. The following descriptions are based on the example of one of the two guide devices 5, 5', whereby the same description also applies to the other guide device 5, 5'. In particular, it should be understood that the two guide devices 5, 5' are mirror-symmetrical to one another. It should be noted that the guide device 5 is shown in the figures with a shortened overall length. It is understood that the guide device 5, 5' has an overall length that essentially corresponds to a height of the window 31 or a door.

[0052] The guide device 5 comprises a support rail 6, which has a receiving area 7 along its longitudinal extent. The receiving area 7 is formed in an interior of the support rail 6. In Fig. In Figure 2, the support rail 6 is shown in a greatly abbreviated representation, i.e., not drawn to scale. It is understood that the length of the support rail 6 can be any length, adapted in particular to the height of the window 31 or a door.

[0053] The support rail 6 is made of a metallic material, in particular aluminum, and forms an elongated profile body. The support rail 6 forms, in particular, an extruded profile, preferably an aluminum extruded profile. The support rail 6 can also be composed of multiple profile bodies. By forming the support rail 6 from such a preferably metallic profile body, it provides structural rigidity to the guide device 5.

[0054] An elongated opening section 8 is formed along a longitudinal extent of the support rail 6. The opening section 8 provides access from an outside to the receiving area 7 inside the support rail 6.

[0055] In addition, a cover element 9 is attached to the support rail 6, which is coupled to the support rail 6 via a plug-in and / or snap-in connection 10, such that the cover element 9 is detachably attached to the support rail 6 or coupled to the support rail 6. The cover element 9 covers a partial area of ​​the receiving area 7 towards the outside and laterally delimits the opening section 8 along its entire longitudinal extent. In other words, the cover element 9 defines or delimits a lateral edge area of ​​the opening section 8. When the cover element 9 is decoupled or removed from the support rail 6, an access to the receiving area 7 is formed, through which access a guide rail 11 described below can be inserted into and removed from the receiving area 7 of the support rail 6.

[0056] As in Fig. As shown in Figure 2, the guide rail 11 is arranged in the receiving area 7 of the support rail 6. The support rail 6 and the guide rail 11 are two separate components. The guide rail 11 inserted into the receiving area 7 extends correspondingly to the opening section 8 of the support rail 6, so that a guide groove 12 of the guide rail 11 is accessible from the outside in order to guide the lateral edge area of ​​the curtain 2 in the guide groove 12 during unwinding and / or winding.

[0057] The guide rail 11 is made of a plastic material, for example, a thermoplastic, and is formed by an elongated profile body. For example, the guide rail 11 is designed as an extruded profile, a molded profile, or an injection-molded part. It is understood that the guide rail 11 can also be made of any other material, for example, a composite material or a metallic material.

[0058] As shown in the sectional view of the guide rail 11 in Fig. As can be seen in Figure 6, the guide groove 12 has a cross-section in which the guide groove 12 forms two lateral undercuts 13 along its longitudinal extent. These undercuts 13 can be engaged behind by a piping or extension (not shown in detail) on the lateral edge area of ​​the curtain 2, so that the curtain 2 is securely guided in the guide groove 12 during unwinding and / or winding and does not slip out of the guide groove 12.

[0059] As in the Fig. As can be seen in Figures 2 to 5, the guide device 5 comprises a fastening device 14, by which the guide rail 11 is fastened in the receiving area 7 of the support rail 6. The fastening device 14 releasably fastens the guide rail 11 in the receiving area 7, so that the guide rail 11 can be inserted into the receiving area 7 and fastened to the fastening device 14, as well as detached from the fastening device 14 and removed from the receiving area 7. In particular, by removing the cover element 9 from the support rail 6.

[0060] The fastening device 14 has two holding elements 15 which are assigned in a projection-like manner to an upper section of the support rail 6, wherein the holding elements 15 of the fastening device 14 extend above the receiving area 7 or into the receiving area 7.

[0061] Corresponding to the holding elements 15, two coupling elements 16 are formed on an end section 17 of the guide rail 11, by means of which the guide rail 11 is detachably coupled to the holding elements 15 of the fastening device 14. The coupling elements 16 are each formed as a recess in the end section 17 of the guide rail 11, wherein the recesses are designed to be coupled to the holding elements 15 in a fastening configuration, i.e., to engage with them. For this purpose, the coupling elements 16 are formed laterally on the guide rail 11, such that the guide rail 11 can be arranged between the two holding elements 15 in order to couple the coupling elements 16 to the holding elements 15.

[0062] By coupling the coupling elements 16 of the guide rail 11 with the holding elements 15 of the fastening device 14, a bearing of the guide rail 11 is formed, in which the guide rail 11 is mounted exclusively at the end section 17 of the guide rail 11 in the receiving area 7.

[0063] This one-sided mounting of the guide rail 11 on the fastening device 14 forms, in particular, an opposite, fastening-free end section 18 of the guide rail 11. In other words, the guide rail 11 is mounted in the receiving area 7 in a statically underdetermined manner by the fastening device 14. With the vertical arrangement of the guide device 5 in a direction of gravity S, the guide rail 11 is thus suspended in the receiving area 7 by the holding elements 15 of the fastening device 14.

[0064] In this way, the guide rail 11 is accommodated in the receiving area 7 with a degree of freedom in its longitudinal direction, allowing it to undergo thermal linear expansion upon exposure to temperature. Particularly when the guide rails 11 are made of a plastic material and the support rail 6 is made of a metallic material, the guide rails 11 and the support rail 6 have different thermal expansion coefficients. Upon exposure to temperature, the guide rail 11 therefore experiences greater thermal linear expansion than the support rail 6.

[0065] In order to compensate for this longitudinal expansion of the guide rail 11, a compensation section 19 is formed in the receiving area 7, which allows a longitudinal expansion of the guide rail 6 in its longitudinal direction and prevents compression or tilting of the guide rail 11 in the receiving area 7 during the longitudinal expansion. As shown in the Fig. 2 and Fig. 3, the compensation section 19 is provided in the lower section of the receiving area 7 of the support rail 6, so that the guide rail 11 can expand downwards in the direction of gravity S when suspended on the fastening device 14.

[0066] The compensation section 19 is formed in particular by the guide rail 11 being shorter than a length of the receiving area 7 of the support rail 6 or by the guide rail 11 protruding upwards out of the receiving area 7 due to the suspension on the fastening device 14. Thus, the guide rail 11 can freely expand downwards in the direction of gravity S.

[0067] The length difference between the guide rail 11 and the receiving area 7 can be adjusted depending on the thermal expansion coefficient of the material of the guide rail 11 and the material of the support rail 6, as well as the length of the guide rail 11 and the support rail 6. For example, the guide rail 11 can be at least 10 mm, preferably at least 25 mm, more preferably at least 50 mm, shorter than the receiving area 7 of the support rail 6.

[0068] On the guide rail 11 there is a Fig. 6, by means of which the guide rail 11 is positioned in the receiving area 7 in the directions transverse to its longitudinal extent. The positioning device 20 suppresses movement of the guide rail 11 in the receiving area 7 in the directions transverse to its longitudinal extent, but enables the expansion of the guide rail 11 in the longitudinal direction. By means of the positioning device 20, the guide rail 11 is positioned in the receiving area 7 in such a way that the guide rail 11 is aligned correspondingly to the opening section 8 of the receiving area 7. In this case, the guide rail 11 is positioned in the receiving area 7 by the positioning device 20 in such a way that the guide groove 12 of the guide rail 11 runs correspondingly to the opening section 8 of the receiving area 7, such that the guide groove 12 for guiding the curtain 2 is accessible from an outside.

[0069] The positioning device 20 is formed by two flexible positioning elements 21, which extend along the guide rail 11 on both sides to the guide groove 12. The positioning elements 21 each extend lip-like or wing-like from the guide rail 11. In particular, the positioning elements 21 protrude further from the guide rail 11 than the guide groove 12.

[0070] The positioning elements 21 are formed from a flexible material, for example, a flexible plastic, an elastomer, a silicone, rubber, or the like. The positioning elements 21 are formed integrally with the guide rail 11; for example, the positioning elements 21 can be injection-molded, glued, welded, or the like onto the guide rail 11. For example, the guide rail 11 with the flexible positioning elements 21 provided thereon can be manufactured using a two-component injection molding process.

[0071] To position the guide rail 11 in the receiving area 7, the flexible positioning elements 21 rest with their free end sections against an inner wall 22 of the receiving area 7 and in this way clamp the guide rail 11 in the receiving area 7.

[0072] The two positioning elements 21 extend continuously from the lower fastening-free end section 18 along the guide rail 11, wherein the upper end section 17 of the guide rail 11 is designed without positioning elements, as shown in the Fig. 2 to 5. This means that the positioning elements 21 end before the upper end section 17 of the guide rail 11, so that the section of the guide rail 11 in which the coupling elements 16 are formed is formed without the positioning elements 21. For example, a distance of at least 20 mm, preferably at least 50 mm, more preferably at least 100 mm, is formed between the coupling elements 16 and the upper end of the positioning elements 21. As a result, the guide rail 11 is not positioned transversely to the longitudinal extent by the positioning elements 21 in the region of the upper end section 17, so that the upper end section 17 of the guide rail 11 has the possibility of being able to move relative to the carrier rail 6 or a certain amount of play is formed, while the guide rail 11 is coupled to the fastening device 14. This mobility is indicated by the oblique representation of the guide rail 11 in Fig. 5 is shown as an example.

[0073] Above the guide rail 11, a guide device 23 is provided, through which the curtain 2 is introduced into an insertion opening 24 of the guide rail 11 during unwinding, ie is guided into the guide groove 12. The Fig. 7 and Fig. 8 show detailed views of the guide device 23, where Fig. 7 a perspective view and Fig. 8 is a side view of the guide device 23.

[0074] The guide device 23 has a guide surface 25 directed toward the insertion opening 24, over which the curtain 2 slides during unwinding and winding. For this purpose, the guide device 23 is arranged in a horizontal orientation. To enable optimal sliding of the curtain 2 over the guide surface 25 of the guide device 23 and to minimize wear on the curtain 2, the guide surface 25 has a convex shape. The guide surface 25 is oriented essentially horizontally, flush with the insertion opening 24 of the guide groove 12.

[0075] As in the Fig. 7 and Fig.As can be seen in Figure 8, the guide device 23 and the fastening device 14 are formed as a common, integral component. This integral component has a through-bore 26 through which the component is fastened to a frame 27 of the guide device 5 by means of a fastening means not shown in detail, for example, a screw. In the present case, the frame 27 is formed by the mounting plate of the winding shaft. In an alternative embodiment of the guide device 5, the guide device 23 and the fastening device 14 can also be formed as two separate components.

[0076] The guide device 23 extends laterally away from the frame 27 and is arranged above the guide rail 11. The guide device 23 can have a length of, for example, at least 50 mm and / or at most 200 mm. It can also be provided that the guide device 22 extends continuously from one guide device 5 to the other guide device 5', so that the curtain 2 is guided across its entire width by the guide device 22 during winding and / or unwinding.

Claims

[1] Guide device (5, 5') for a curtain (2), in particular for shading, darkening, protection against insects and / or the like, comprising a support rail (6) with at least one receiving area (7) which is formed along a longitudinal extent of the support rail (6), and at least one opening section (8) which extends at least partially along the receiving area (7) of the support rail (6), and a guide rail (11) which can be arranged in the receiving area (7) corresponding to the opening section (8) in order to guide the curtain (2) during unwinding and / or winding, wherein the guide rail (11) is received in the receiving area (7) with at least one degree of freedom for longitudinal expansion. [2] Guide device according to claim 1, characterized bythat the support rail (6) has a fastening device (14) for the guide rail (11) or the support rail (6) is assigned a fastening device (14) for the guide rail (11) and the guide rail (11) can be fastened in the receiving area (7) in a statically underdetermined manner by the fastening device (14). [3] Guide device according to claim 2, characterized by that at least one coupling element (16) is provided on the guide rail (11), preferably on an end section (17) of the guide rail (11), by means of which the guide rail (11) can be coupled to the fastening device (14). [4] Guide device according to claim 2 or 3, characterized by that when the support rail (6) is aligned longitudinally in the direction of gravity (S), the guide rail (11) is mounted in the receiving area (7) in a substantially suspended manner by the fastening device (14). [5] Guide device according to one of the preceding claims, characterized by that in the at least one receiving area (7) a compensation section (19) for the longitudinal extension of the guide rail (11) is provided, preferably the guide rail (11) has a shorter extension length than the receiving area (7). [6] Guide device according to one of the preceding claims, characterized by that the material of the guide rail (11) has a greater thermal expansion coefficient than the material of the support rail (6), preferably the guide rail (11) is formed at least in sections from a plastic material and / or the support rail (6) is formed at least in sections from a metallic material, preferably aluminum. [7] Guide device according to one of the preceding claims, characterized bythat the guide rail (11) has a guide groove (12) for guiding the curtain (2), preferably a lateral edge region of the curtain (2). [8] Guide device according to one of the preceding claims, characterized by that the guide rail (11) has a positioning device (20) which positions the guide rail (11) in the receiving area (7) transversely to the longitudinal extent such that the guide rail (11), preferably the guide groove (12) of the guide rail (11), is assigned to the opening section (8) of the receiving area (7). [9] Guide device according to claim 8, characterized by that the positioning device (20) has at least one flexible positioning element (21) which extends at least in sections along the guide rail (11) and rests against at least one inner wall (22) of the receiving area (7) for positioning the guide rail (11). [10] Guide device according to claim 8 or 9, characterized by that a section of the guide rail (11), preferably an end section (17) of the guide rail (11), on which the at least one coupling element (16) is provided, is designed to be free of positioning devices. [11] Guide device according to one of the preceding claims, characterized by that a guide device (23) is provided for inserting the curtain (2) into the guide rail (11), wherein the guide device (23) is assigned to an insertion opening (24) of the guide rail (11) and preferably has a guide surface (25) for the curtain (2) directed towards the insertion opening (24). [12] Guide device according to one of the preceding claims, characterized byin that the support rail (6) has a detachable cover element (9) which, in a coupled configuration, covers the receiving area (7) at least in some areas and, in a decoupled configuration, forms an access for inserting the guide rail (11) into the receiving area (7). [13] Curtain system (1), comprising a curtain (2), in particular for shading, darkening, protection against insects and / or the like, and at least one guide device (5, 5') for guiding the curtain (2) during unwinding and / or winding, characterized by that the at least one guide device (5, 5') is designed according to one of claims 1 to 12.

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