Building opening shading device and connecting module for it

Abstract

Building opening shading device, with a crossbeam (3) supporting a winding shaft (7), a curtain (6) mounted on the winding shaft (7) for raising and lowering, a pair of lateral guide rails (4) for the curtain (6), building-side mountings (5) for individual, building-side mounting of the crossbeam (3), in which mountings (5) the crossbeam (3) is guided, displaceable and fixable in the longitudinal direction of the crossbeam, so that the stationary crossbeam (3) provides a reference for the position of the guide rails (4) below and to the side of the crossbeam (3), and each a connecting module (1, 2; 101, 102) for both end faces of the crossbeam (3), which has a connector (1; 101) attachable to the crossbeam (3) and displaceable with the crossbeam (3) relative to the building-side mountings (5) with a plug pin section (15, 16; 116) projecting downwards and in the longitudinal direction of the crossbeam beyond its associated end face of the crossbeam (3), wherein Each guide rail (4) has an insertion groove (9) that is also open towards the curtain (6), with which the guide rail (4) can be inserted from below onto the plug-in pin section (15, 16; 116) of the associated connector (1; 101) with a fit on the building-fixed crossbeam (3) in order to position the two guide rails (4) at the specified reference position, and wherein fastening devices are provided to then individually fasten the two guide rails (4) to the building side at the respective reference position, characterized by the fact that the connection of the connectors (1; 101) with the cross member (3) and / or the connection of the connectors (1; 101) with the guide rails (4) is designed such that the crossbeam (3) can be pivoted downwards from its horizontal mounting position above the building-side guide rails (4) into an inclined position between the two guide rails (4) when the building-side guide rails (4) remain mounted, and that The crossbeam (3) can be positioned diagonally between the two guide rails (4) already attached to the building side and then pivoted into its horizontal mounting position above the guide rails (4) by moving upwards.

Description

[0001] The invention relates to a building opening shading device, in particular a venetian blind according to the preamble of claim 1, and an arrangement provided for this purpose according to the preamble of claim 10 or 12.

[0002] It has long been known in roller shutters to anchor the roller shutter box, which acts as a crossbeam supporting the roller shutter's winding shaft, in the roller shutter's guide rails by means of downward-projecting plug pins on the side panels of the roller shutter box, each of which has a corresponding insertion channel. An example of this can be found in German utility model DE 203 01 854 U1.

[0003] This design has the advantage that the roller shutter box is securely fixed via the mortise pins inserted into the guide rails, and specifically to components that belong to the roller shutter itself, namely the guide rails, which must be attached to the building anyway. Therefore, adjustments to the roller shutter box to the window frame or other building components to which the roller shutter box could be attached are unnecessary.

[0004] Consequently, this construction method is increasingly being adopted in the field of external venetian blinds, although here the crossbeam supporting the winding shaft is the headrail of the blind, which in turn can be housed in a type of box or cover. Headrails for external venetian blinds, as defined in the present application, are U-profiles, usually with unhemmed longitudinal edges, which, depending on the design, are installed open at the bottom or top.

[0005] European patent application EP 2 186 988 A2 describes a venetian blind in which a system assembly, consisting of the headrail with the suspended slats and the headrail cover, is anchored in the guide rails of the venetian blind by means of downward-projecting insertion pins on the side panels of the headrail cover. A similar arrangement in principle, in which the headrail rests on the side guide rails of the venetian blind and is anchored in the headrail by downward-projecting insertion pins, is also shown in US patents US 4,444,241 and US 4,341,254, and German patent application DE 344 42 38 A1.

[0006] On the other hand, a design and assembly sequence for roller shutters is known in which the crossbeam supporting the winding shaft, i.e., the roller shutter box, is first attached to the building. Then, at a position determined by the crossbeam's location—that is, at a specific distance from its ends in the longitudinal direction of the headrail—the two guide rails are attached. This ensures that the position of the guide grooves in the guide rails aligns with the curtain, which is raised and lowered on the winding shaft mounted in the crossbeam. Furthermore, the position of the guide groove must also be aligned with the headrail or roller shutter box, which is attached to the building, in the direction perpendicular to the curtain lowering plane.

[0007] Previously, the position of the guide rails was adjusted by measuring or by eye, resulting in frequent installation errors. Therefore, positioning aids are already known that are attached to the underside of the crossbeam's end face and have downward-projecting positioning pins in a section extending beyond the crossbeam's end face. The corresponding guide rail can then be slid onto these positioning pins from below, allowing the guide rail to be positioned relative to the roller shutter box attached to the building and then mounted to the building using appropriate mounting brackets. German patent application DE 42 40 356 A1 discloses such an installation aid for a roller shutter, which allows the guide rail to be aligned relative to the roller shutter box attached to the building.

[0008] The end-face connectors are hooked into corresponding openings in the roller shutter box using barbs. If the roller shutter box needs to be removed, for example for maintenance, it must be lifted sufficiently to pull the plug pins out of the guide rails. The roller shutter box, along with the connectors, can then be guided past the guide rails, or the guide rails must be removed beforehand. This also applies to the aforementioned devices where the headrail of a venetian blind or the roller shutter box rests on the guide rails, thus covering them in the direction of the winding shaft. During installation, the roller shutter box or headrail is maneuvered in place above the previously fixed guide rail and then lowered to engage the plug pins in the guide rail.

[0009] A different approach than that taken in DE 42 40 356 A1, which is considered to be generic, is pursued in German patent application DE 10 2012 100 153 A1, which, however, concerns a venetian blind. There, mounting elements projecting from the end face of the headrail are provided, which are also inserted into the associated guide rail by means of plug-in pins. These mounting elements are attached to a ceiling of the building via a plate located above the headrail, which has pre-drilled holes in it. A retaining clamp, which encompasses the headrail, is also attached to this mounting plate. After releasing this retaining clamp, the headrail can be pulled downwards without having to remove the guide rails. The guide rails also have removable undercuts, so that the slats can then also be removed from the guide rails without having to remove the guide rails.However, this arrangement has the disadvantage that the guide rails cannot be positioned relative to the pre-assembled headrail, but only in relation to the mounting brackets for the headrail, which must first be screwed to the ceiling. This essentially results in the same problem as with the aforementioned external venetian blinds, where the guide rails are mounted first and then the headrail is attached. The only difference here is that the mounting brackets must be positioned at the correct distance from each other, rather than necessarily the guide rails, in order to then attach the crossbar. If the mounting brackets are not screwed to the ceiling at the correct distance from each other, the distance between the guide rails and the crossbar will also be incorrect.

[0010] Based on the prior art, the present invention therefore aims to further develop a building opening shading device of the generic type in such a way that assembly, disassembly, and maintenance are simplified even in confined spaces, and that there is a high degree of flexibility regarding the sequence in which the individual parts are assembled. A further object of the present invention is to provide an arrangement with a crossbeam supporting the winding shaft and a connecting module for connecting the crossbeam to the guide rail, with which such a building opening shading device can be implemented.

[0011] This problem is solved with regard to the building opening shading device by the features of claim 1, and with regard to the arrangement by the features of claim 10 or the features of claim 12.

[0012] The invention relates to a building shading device, and in particular to a Venetian blind. The building opening shading device can have a crossbeam unit comprising a winding shaft and a crossbeam supporting the winding shaft, as well as a curtain that can be raised and lowered on the winding shaft. In the case of a Venetian blind, the crossbeam is therefore a headrail and the curtain is a slatted curtain. However, other building shading devices would also be conceivable within the scope of the invention, for example, a roller shutter with a roller shutter box functioning as a crossbeam and a curtain consisting of interconnected slats wound onto the winding shaft. The crossbeam is attached to the building side above and separately from a pair of guide rails, each with a guide groove for the curtain.The fastening device used to attach the crossbeam to the building can, for example, comprise multiple mounting brackets screwed to a ceiling wall, into which the headrails are inserted from below. The guide grooves, which serve as lateral guides for the blind, are typically undercut to ensure the secure guidance of the end guide pins of the blind slats. The two guide rails are attached separately to the building side, laterally and below the crossbeam, and a wide variety of fastening devices are conceivable. In the case of a Venetian blind, for example, spacers are known that have a bracket attached to the building and an extendable and lockable support arm with which they carry the guide rail, allowing the guide rail to be attached to the building wall at an adjustable distance from the wall.

[0013] To position the two guide rails below and laterally along the crossbeam relative to it, a connecting module is provided on each end face of the crossbeam. This module features a connector attached to the crossbeam but movable relative to the crossbeam's mounting bracket. The connector's pin section, projecting longitudinally beyond its corresponding end face, fits into a vertically extending insertion groove in the guide rail. The connectors and guide rails are designed so that, with the crossbeam attached to the building, the guide rails can be attached to the pin sections of the connectors from below. The insertion groove for this purpose can advantageously be formed by the open and undercut guide groove for the curtain.

[0014] According to the invention, the connection of the plug connector to the crossbeam and / or the connection of the plug connectors to the guide rails is designed such that the crossbeam, and preferably the crossbeam unit as a whole, can be pivoted downwards from its horizontal mounting position above the guide rails (with the guide rails remaining attached to the building) into an inclined position between the two guide rails, at least at one end detached from the associated guide rail. This allows for easy disassembly of the crossbeam unit while maintaining the advantages of the positionability of the guide rails relative to the crossbeam unit already attached to the building, without having to disassemble the guide rails or require space above them to pull the plug pins out of the guide rails.Therefore, if the crossbeam, i.e., the headrail or the roller shutter box, needs to be removed for maintenance, this can be done even in confined spaces without having to dismantle the guide rails beforehand. Furthermore, the fact that the crossbeam can be moved lengthwise within the mounting brackets of its building-side fastening system allows for quick positioning of the brackets. This is because, firstly, they are necessarily aligned with the wall, e.g., the ceiling wall, and secondly, they do not need to be precisely positioned lengthwise along the crossbeam.

[0015] According to the invention, the connection of the connectors to the crossbeam and / or the connection of the connectors to the guide rails is further designed such that the crossbeam, and preferably the crossbeam unit as a whole, can be positioned obliquely between the two guide rails already attached to the building and then pivoted into its horizontal mounting position above the guide rails simply by moving it upwards. This allows the crossbeam unit, removed for maintenance purposes, to be reinstalled in the same way it was removed, without having to detach the guide rails from the building or requiring space above the crossbeam for inserting downward-projecting plug pins.

[0016] In addition to the assembly sequence described above, in which the crossbeam unit is first attached to the building and then the guide rails are positioned relative to the crossbeam unit and separately attached to the building, an alternative assembly sequence can be implemented. In this alternative sequence, the guide rails are first brought into the desired position and attached to the building using a different method. Then, the crossbeam unit is threaded between the guide rails, pivoted into position, and connected to the guide rails, eliminating the need for the aforementioned space above the crossbeam. This provides maximum flexibility regarding the installation options for the building opening shading device, allowing the most suitable installation method to be selected depending on the structural conditions of the building opening to be shaded.

[0017] Therefore, no assembly space is required above the crossbeam or crossbeam unit, neither for threading the crossbeam in nor out by means of the inclined position.

[0018] The insertion slots in the guide rails, corresponding to the plug-in pin cutouts of the connectors, can be provided alongside the actual curtain guide slots. Preferably, however, the guide slots also serve as insertion slots. Advantageously, an inlay can be provided that is inserted into a receiving groove that is undercut towards the curtain. This inlay forms the guide slot, which is undercut more deeply than the receiving groove. In this case, the receiving groove can simultaneously serve as an insertion slot if the inlay ends below the plug-in pin section inserted in the receiving groove, i.e., the insertion slot. Alternatively, the plug-in pin section can also be inserted in the guide slot formed by the inlay.

[0019] A connection of the connectors with the crossbeam, which allows the pivoting of the crossbeam or the crossbeam unit as a whole according to the invention when guide rails are attached to the building, can advantageously be realized by having at least one of the connectors have a plug pin section that is so flexible or elastically deformable that, when the crossbeam is pivoted from its horizontal mounting position into the inclined downward position, the connector attached to the crossbeam, which moves downwards, can be pressed out of its associated insertion groove, which is open towards the curtain and undercut, and that, when the crossbeam is pivoted from its inclined mounting position into its horizontal mounting position, the connector attached to the crossbeam, which moves upwards, can be pressed into its associated insertion groove, which is open towards the curtain and undercut.

[0020] The building opening shading device according to the invention thus allows for the subsequent removal of the crossbeam unit as a whole, without the need to dismantle the guide rails or disassemble the crossbeam unit, even if there is no space above the crossbeam unit to lift it sufficiently to pull the plug sections out of the insertion channel. Conversely, this allows the installation space required for the crossbeam unit to be kept as small as possible in its upper dimensions, since the mounting for the crossbeam can be attached directly to a ceiling above. This also results in simpler installation, because the crossbeam no longer needs to be leveled; its horizontal alignment is achieved automatically.

[0021] In this sense, a multiple of retaining clamps that can be attached to the ceiling wall is advantageous as a fastening device for the crossbeam unit on the building. Each clamp is designed with a U-shaped, downwardly open retaining yoke and a closing bracket articulated to the retaining yoke, wherein the closing bracket, in a closed position, together with the retaining yoke, forms a closed frame for receiving the crossbeam and, in an open position, allows the crossbeam to be inserted from below into the U-shaped open retaining yoke.

[0022] An arrangement according to the invention, suitable for the aforementioned building opening shading device, for connecting the guide rail and the crossbeam supporting the winding shaft, comprises, in addition to the crossbeam, a connector which has a plug-in section that can be inserted from above into a vertically extending insertion groove of the upwardly open guide rail and a mounting flange for attaching the connector in the area of ​​an end face of the crossbeam, wherein the plug-in section is connected to the mounting flange in such a way that it projects beyond the end face and the underside of the crossbeam. The arrangement is characterized in that the connecting module includes a retaining frame that can be inserted into and anchored in the end face of a crossbeam with a U-shaped inner contour, for example, into a venetian blind headrail.The retaining frame has two vertical webs connected by a cross web bridging the U-shape of the cross member and a cross web resting on the base of the U, wherein the webs have outer circumferential contact surfaces for contact with the U-shaped inner contour of the cross member, and at least one of the cross webs has a bottom section on its side facing the other cross web, which serves as a support for the mounting flange of the connector, wherein the mounting flange is screwed to the bottom section with a screw that can be removed from below.

[0023] After loosening the screw, the crossbeam, along with the mounting frame inserted within it, can be pivoted downwards. This allows the connector's mounting flange to emerge from the crossbeam, and the crossbeam, with its mounting frame anchored within it, can then be hinged past the connector remaining on the guide rail. Similarly, the crossbeam is mounted by positioning it at an angle between the two guide rails and pivoting the crossbeam's end, with the mounting frame, upwards past the mounting flange of the connector attached to the guide rail.

[0024] The connector screwed to the mounting frame allows for the positioning of the guide rails during the initial installation of the crossbeam on the building. Installation, and especially reinstallation of the crossbeam after removal of the crossbeam unit for maintenance, is particularly easy if two flank walls are provided on the mounting frame, defining the base section in the longitudinal direction of the crossbeam. These flank walls project towards the other cross member and, together with the base section, form an insertion groove for the mounting flange that opens towards the end face of the crossbeam. Furthermore, two parallel edge walls project upwards from the mounting flange, defining its longitudinal direction, to engage with these flank walls in the upwardly open insertion groove on the base of the crossbeam. This allows the connector to be easily positioned on the mounting frame inserted into the crossbeam.

[0025] It is particularly advantageous if such a base section, or preferably a slot for the mounting flange, is formed not only on one crossbar, but also on the other. This is because there are external venetian blinds where the headrail is installed with the opening facing downwards and external venetian blinds where the headrail is installed with the opening facing upwards, although the headrail profile remains the same. The double slot allows the mounting frame to be used for both variants.

[0026] Another arrangement according to the invention and suitable for the building opening shading device described above has a connector which has a plug-in pin section that can be inserted into a vertically extending, opening towards the curtain, in particular undercut, insertion groove of the upwardly open guide rail, and a fastening section that can be attached to the cross member in the area of ​​an end face of the cross member, wherein the plug-in pin section is connected to the fastening section via a connecting section, so that the plug-in pin section projects beyond the end face and the underside of the cross member.The arrangement is characterized by the fact that the connecting section has connecting wall sections extending over a height, projecting outwards and, in particular, oriented perpendicular to the longitudinal direction of the crossbeam, and the plug-in pin section has plug-in pin legs arranged horizontally side by side, projecting outwards from the connecting wall sections in the longitudinal direction of the crossbeam, wherein at least one, preferably both, plug-in pin legs are designed as bending springs that can be pre-tensioned or deflected horizontally relative to the other plug-in pin leg. The two plug-in pin legs preferably have contact surfaces on their opposite sides, extending vertically and in the longitudinal direction of the crossbeam, with which the plug-in pin legs bear against associated flanks of the insertion groove in the guide rail when inserted.

[0027] The two prong legs can then be bent towards each other when one end of the crossbeam, mounted on the two guide rails, is pulled downwards to pivot the crossbeam diagonally between the guide rails. This means the prong section is pulled out of the insertion groove on the guide rail at its undercut, open side facing the curtain. If, however, the crossbeam is to be mounted on guide rails already attached to the building, the crossbeam can be positioned diagonally between the guide rails. Then, the flexible prong section, due to its two prong legs (or bending legs), can be pressed into the insertion groove on one end of the crossbeam and then on the other end.

[0028] According to an advantageous embodiment, the contact surface on each plug pin leg, designed as a bending spring, is formed on an undercut locking projection facing away from the other plug pin leg and projecting in the horizontal direction. When inserted into the insertion groove of the guide rail, the undercut of this projection engages an undercut that projects horizontally from the flank of the insertion groove, adjacent to the plug pin leg, towards the other plug pin leg. This creates a snap-fit ​​connection between the plug pin section of the connector and the undercuts on the insertion groove, ensuring precise positioning and secure retention of the connector in the insertion groove.

[0029] According to a further advantageous embodiment, at least one, preferably both, plug pin legs have a stop projection projecting upwards beyond the contact surface of the other plug pin leg. This stop projection rests on the upper side of the plug slot's flank, which rests against the plug pin leg, when the plug connector is inserted into the slot. This prevents the plug pin section from being pressed into the slot from above by the weight of the crossbeam or the entire crossbeam assembly resting on the plug connectors. Furthermore, assembly is simplified because the stop determines how far the guide rails should be pushed in from below. This is particularly true if the stop projection is undercut and a wall forming the flank of the plug slot can engage behind it at the undercut.The fitter receives a visually or audibly perceptible signal when attaching the guide rails, indicating that the stop projection with its undercut engages with the flank of the insertion groove and the crossbeam is thus correctly positioned.

[0030] To facilitate the insertion of the plug-in section into the insertion groove of the guide rail, the two plug-in leg sections have a chamfer or rounding along an edge bridging a distance in the vertical direction on the outer side of their contact surfaces in the longitudinal direction of the crossbeam.

[0031] To facilitate the removal of the plug pin section from the undercut guide groove towards the curtain side, the undercuts of the locking projections on the side of the plug pin legs located inside in the longitudinal direction of the crossbeam have a surface that recedes from the contact surface in the horizontal direction away from other plug pins, forming a chamfer or rounding, which extends over a distance in the vertical direction.

[0032] To facilitate the pivoting movement to be carried out, the undercuts of the locking projections on the side of the plug pin legs located inwards in the longitudinal direction of the crossbeam are also shaped in their downward course in a convex arc segment or arrow-shaped curve inwards in the longitudinal direction of the crossbeam.

[0033] Advantageously, the connecting section connecting the fastening section or insertion pin with the two plug pin legs has a support tab projecting outwards along a lower, horizontal edge of the connecting plate below the plug pin legs in the longitudinal direction of the crossbeam, as well as a stiffening rib connecting the connecting plate with the support tab, which extends in a vertical plane between the two plug pin legs.

[0034] Advantageous further developments are the subject of the remaining dependent claims and are explained in more detail together with the embodiments of the invention shown in the accompanying illustrations. These illustrations show: Fig. 1 an embodiment of a venetian blind according to the invention in the installed state in a schematic side view; Fig. 2 Detail II from Fig. 1; Fig. 3 one at the in the Fig. 1 and Fig. The 2 roller shutters shown have a built-in mounting frame; Fig. 4 one of the in Fig. 3 shown mounting frames assigned to which in the Fig. 1 and Fig. The two shown external venetian blinds have integrated connectors; Fig. 5 a connection module according to an embodiment of the invention, wherein the in Fig. 4 connectors shown on the in Fig. The 5 shown mounting frame is attached; Fig. 6 that in the Fig. 5 connection module shown, wherein the one in the Fig. 4 connectors shown in another, on which in Fig. The mounting frame shown in the 4 is shown in the attached state; Fig. 7 one of the Fig. 2 corresponding view, however, the retaining frame is in the Fig. 6 is inserted into the crossbeam of the roller shutter in the position shown; Fig. 8 - 9 an assembly sequence for installing the in Fig. 1 shown Venetian blinds; and Fig. 10 an alternative mounting method; Fig. 11 an alternative embodiment of the connection module according to the invention, which consists of a connector and a holding frame.

[0035] Fig. Figure 1 shows a venetian blind with a headrail 3 acting as a crossbeam, which is suspended from a ceiling wall D above a window F to be shaded by means of headrail retaining clips 5. Guide rails 4 are attached to the sides and below the headrail 3 on both sides of a blind 6, serving as lateral guides for the blind 6.

[0036] The curtain 6 is attached to a in Fig. The winding shaft 7, which can be raised and lowered, is recognizable and consists of individual lamellae that are in the Fig. In the view shown in Figure 1, the louvers are gathered into a slat package above the window F. To receive the blind 6 on the winding shaft 7 and to support the winding shaft 7 in the headrail 3, so-called reversing gears 8 are used. These gears are supported in the headrail 3 by their housings and are rotatably connected to the winding shaft 7 by their reel units contained within the housings. The blind can be raised and lowered via lifting tapes that can be wound and unwound on the reel units.

[0037] To connect the headboard 3 with the guide rails 4, connecting modules 1, 2 are provided on the end face of the headboard, which consist of a retaining frame 2 inserted into the interior of the headboard 3 and a connector 1, which is inserted at one end into a slot 9 of the headboard 4 at the upper end of the headboard 4, which simultaneously forms the guide groove for the blind 6, in which the individual blind slats are guided with guide pins projecting from their end faces.

[0038] On the other hand, connector 1 is inserted into a socket provided on the mounting frame 2, which is particularly well suited to Fig. The retaining frame 2 is inserted into the recognizable insertion groove 21. The retaining frame 2 has two vertical webs with outer circumferential contact surfaces 27, 28, which are connected by two horizontally extending webs with outer circumferential contact surfaces 25, 26, 29. The retaining frame 2 rests with the contact surfaces 25, 26, 27, 28, 29 in its position inserted into the head rail 3, ( Fig. 2) on the U-shaped inner contour of the head strip 3, bearing against edge flanges 31 extending along the longitudinal edges of the head strip 3 with its contact surfaces 25, 26. Furthermore, outwardly projecting locking lugs 24 are provided on the sides of the vertical webs facing the flank ends of the head strip 3, with which the retaining frame 2 engages in associated recesses 34 ( Fig. 2) is engaged in the flank walls of the head rail 3, wherein a circumferential collar 23 extending over the three webs abutting the walls of the head rail 3 is provided, which overlaps the walls of the head rail 3 at the end face and serves as a counter-support to the locking lugs 24.

[0039] Fig. Figure 4 shows the connector 1 associated with the mounting frame 2. The connector 1 has a plug-in pin section 15, 16, which is connected to a mounting section 11 via a connecting section 12, 13, 14. The mounting section 11 is designed as an insertion pin and is adapted to the dimensions of the insertion groove 21 on the mounting frame 2 in order to be inserted into it with a tight fit. The plug-in pin section 15, 16 consists of two plug-in pin legs 15, 16, which project outwards from a connecting plate 12 of the connecting section 12, 13, 14, which is oriented in the normal direction to the longitudinal direction of the cross member in the installed state, and are arranged parallel to each other and are mirror-symmetrical to each other.

[0040] The two pin legs 15, 16 can be bent towards each other, but are then under outward preload and are thus designed as bending springs. Each pin leg 15, 16 has, on its outer side facing away from the other pin leg 16, 15, an outwardly projecting detent projection in a region adjoining its free end. This projection is recessed towards the other pin leg 15, 16 on the side facing the fastening section 11 via an undercut 19, 20. At their free end, the two pin legs 15, 16 have a surface lying in a vertical plane, angled at approximately 30° to the plane of the connecting plate 12, i.e., they are chamfered. The fastening section 11 or...The connecting section 12, 13, 14, which connects the insertion pin 11 with the two pin legs 15, 16, has a support tab 13 projecting outwards along a lower, horizontal edge of the connecting plate 12 below the pin legs 15, 16 in the longitudinal direction of the crossbeam, as well as a stiffening rib 14 connecting the connecting plate 12 with the support tab 13, which extends in a vertical plane between the two pin legs 15, 16.

[0041] From the overall view of Fig. 2 and Fig. From references 5 on the one hand, and 6 and 7 on the other, it becomes clear why the retaining frame 2 not only has an insertion groove 21 on one of the two crossbars, but also a further insertion groove or a further insertion channel 22 on the other crossbar: Firstly, there are external venetian blinds in which the headrail 3 is installed with the opening facing upwards, as is the case in the Fig. 2 is shown. However, there are also other external venetian blinds where the headrail 3 is installed with the opening facing downwards, as shown in the Fig. Figure 7 shows the header profile itself remaining the same. Because two insertion channels 21, 22 are provided, the mounting frame can be used in both variants, with the mounting section or insertion pin 11 of the connector 1 being inserted into the lower insertion groove, so that the guide rails 4 are positioned below the header 3.

[0042] Fig. Figure 7 shows the inner contour of the guide rail 4, i.e., the insertion groove 9. This groove has two flank walls 41, 41, which have projections 43, 44 towards each other at their ends facing the curtain. The insertion groove 9 is therefore undercut on its side facing the curtain 6. Because the two pin legs 15, 16 of the connector 1 can be pressed towards each other, the cross member 3 with the attached connecting modules 1, 2 can be positioned as a whole at an angle between the pre-assembled guide rails 4 and pressed into the insertion groove 9 of the guide rail, which simultaneously serves as the guide groove for the curtain 6, from the curtain side, using the pin sections 15, 16 of the two connectors 1, as shown in the figure. Fig. 10 emerges.

[0043] The fact that the undercuts 19, 20 on the sides facing the curtain of the outer locking projections in the insertion groove 9, which engage the edge projections 43, 44 there, follow an approximately arrow-shaped curve from top to bottom and that they are rounded or chamfered, also facilitates the removal of the plug pin legs 15, 16 from the insertion groove 9 when the crossbeam 3 or a crossbeam unit comprising the crossbeam 3 and the curtain 6 suspended from it is to be removed with the guide rails 4 mounted, and for this purpose first one end end of the crossbeam 3 is pulled downwards so that the connector 2 there comes out of engagement with the guide rail 4, and then the other end with the connector 2 there is pulled out of the guide rail 4 there.

[0044] During the assembly of the in Fig. In contrast, for the Venetian blind shown in Figure 1, the crossbeam unit consisting of the headrail 3 (with the connecting modules 1, 2 attached to it) and the curtain 6 can first be attached to the ceiling D using the headrail retaining clamps, before, as Fig. Figure 8 shows how a guide rail 4 is attached from below to the plug-in section 15, 16 of the associated connector 1, whereby a slight pivoting of the guide rail may be necessary to insert the end-face guide pins 61 on the individual slats of the blind 6 into the groove 9 of the guide rail 4, which serves simultaneously as a guide groove and insertion groove. The guide rail 4 is then attached to the building wall surrounding the window in the reference position defined by the cross member 3 or the plug-in section 15, 16 of the connector 1 attached to the cross member 3, in the longitudinal direction of the cross member and in a direction normal to the blind extension plane. Then, as Fig. Figure 9 shows how to proceed in the same way with the second guide rail 4 on the other side of window F, so that ultimately the in Fig. The assembly of the external venetian blind shown in Figure 1 results in the following: If the crossbeam unit is to be removed for maintenance purposes, the guide rails 4 do not need to be removed, as shown in Figure 1. Fig. 10 shows:

[0045] After releasing the headboard retaining clamps 5 attached to the ceiling D, the entire crossbeam unit 3, 6 can be pivoted downwards into an inclined position between the two guide rails 4, whereby the plug-in pin sections 15, 16, i.e., the two flexible plug-in pin legs 15, 16 of the two connectors 1, can be pulled out of the guide groove 9 of the respective guide rail 4. In the same way, with pre-assembled guide rails 4, the crossbeam unit can also be positioned at an angle between them and mounted by pressing in the plug-in pin legs 15, 16 while the crossbeam 3 is in a horizontal position, or remounted after removal for maintenance purposes.

[0046] Finally, it shows Fig. Figure 11 shows a further embodiment of a connecting module 101, 102, in which a connector 101 is screwed to an associated mounting frame 102 by means of a screw 117. The pivoting in and out of the cross member is carried out with the mounting frame 102 still attached to the cross member and the connector 101 remaining on the guide rail, the connector being placed with a plug-in pin section 116 onto the associated insertion groove on the guide rail. To facilitate positioning of the connector 101 on the mounting frame 102, two flank walls 121a forming an insertion groove are provided there, flanking a support base 121 with a through-hole for the screw 117. In contrast, the connector 101 has a mounting flange 111 for screwing onto the support base 121, which is also provided with flank walls 111a and thus fits into the associated insertion groove on the retaining frame 102.On the web of the retaining frame 102 opposite the support base 121, a second insertion groove is provided, which has a corresponding support base 122 with flanking side walls 122a as limiting walls. The retaining frame 102 can again be clipped onto the guide rail, for which locking lugs 124 are provided. Furthermore, the mounting flange 111 is connected to the plug-in pin section 116 of the connector 101 via a connecting section 112.

[0047] Variations and modifications of the illustrated embodiments are possible without leaving the scope of the invention.

[0048] For example, it would be conceivable to use the [something] at the [something] in Fig.The stop projections 17, 18 shown on the upper side of the connectors 15, 16, which extend towards the insertion groove flanks 43, 44 and serve as stops when the guide rails 4 are attached to the connectors 1, are to be omitted, which would then mean that the positioning of the guide rails 4 in the vertical direction would have to be done by eye, instead of via the reference position specified by the stop projections 17, 18.

Claims

[1] Building opening shading device, with a crossbeam (3) supporting a winding shaft (7), a curtain (6) mounted on the winding shaft (7) for raising and lowering, a pair of lateral guide rails (4) for the curtain (6), building-side mountings (5) for individual, building-side mounting of the crossbeam (3), in which mountings (5) the crossbeam (3) is guided, displaceable and fixable in the longitudinal direction of the crossbeam, so that the stationary crossbeam (3) provides a reference for the position of the guide rails (4) below and to the side of the crossbeam (3), and each a connecting module (1, 2; 101, 102) for both end faces of the crossbeam (3), which has a connector (1; 101) attachable to the crossbeam (3) and displaceable with the crossbeam (3) relative to the building-side mountings (5) with a plug pin section (15, 16; 116) projecting downwards and in the longitudinal direction of the crossbeam beyond its associated end face of the crossbeam (3), wherein Each guide rail (4) has an insertion groove (9) that is also open towards the curtain (6), with which the guide rail (4) can be inserted from below onto the plug-in pin section (15, 16; 116) of the associated connector (1; 101) with a fit on the building-fixed crossbeam (3) in order to position the two guide rails (4) at the specified reference position, and wherein fastening devices are provided to then individually fasten the two guide rails (4) to the building side at the respective reference position, characterized by , that the connection of the connectors (1; 101) with the cross member (3) and / or the connection of the connectors (1; 101) with the guide rails (4) is designed such that the crossbeam (3) can be pivoted downwards from its horizontal mounting position above the building-side guide rails (4) into an inclined position between the two guide rails (4) when the building-side guide rails (4) remain mounted, and that The crossbeam (3) can be positioned diagonally between the two guide rails (4) already attached to the building side and then pivoted into its horizontal mounting position above the guide rails (4) by moving upwards. [2] Building opening shading device according to claim 1, characterized by, that at least one of the connectors (1) has a plug pin section (15, 16) and / or the associated insertion groove (9) has undercuts which are so flexible that when the crossbeam unit is pivoted from its horizontal mounting position into the inclined position downwards, the connector (1) attached to the crossbeam (3) and moved downwards can be pressed out of the insertion groove (9) associated with it, which is open towards the curtain (6) and undercut, and that when the crossbeam unit is pivoted from its inclined mounting position into its horizontal mounting position, the connector (1) attached to the crossbeam (3) and moved upwards can be pressed into the insertion groove (9) associated with it, which is open towards the curtain (6) and undercut. [3] Building opening shading device according to claim 1 or 2, characterized by, that the crossbeam (3) is designed as a U- or hollow profile surrounding an interior on several sides and at least one of the connectors (101) projects into the crossbeam (3) with a mounting flange (111) and is screwed from below onto a base located near the associated end face of the crossbeam (3) at the lower edge in the interior, so that after loosening this screw connection, when pivoting the crossbeam unit from its horizontal mounting position into the inclined position downwards, the connector (101) remains connected to the guide rail (4) and with its mounting flange (111) comes out of the interior of the crossbeam (3), so that the crossbeam (3) can continue to pivot past the mounting flange (111). [4] Building opening shading device according to claim 1, 2 or 3, characterized by, that the insertion groove (9) on at least one of the two guide rails (4) simultaneously forms an undercut guide groove for the curtain or an undercut receiving groove into which an inlay forming a guide groove that is undercut more than the receiving groove is inserted, wherein each inlay advantageously ends below the plug-in pin section (15, 16; 116) inserted in the associated insertion groove. [5] Building opening shading device according to one of the preceding claims, characterized by , that the crossbeam (3) is designed as a U-profile with folded longitudinal edges (31) on its U-flanks, and that near the end faces of the crossbeam (3) locking recesses (34) are punched through in its U-flanks, wherein the connecting modules (1, 2; 101, 102) for fastening the connector (1; 101) to the crossbeam (3) each have a U-shaped inner contour have a slide-in and anchorable retaining frame (2; 102) to which the associated connector (1; 101) is attached, which retaining frame (2; 102) has a closed cross-section adjacent to the U-shaped inner contour of the cross member (3) and the folded longitudinal edges (31), the webs of which adjacent to the U-flanks have locking projections (24; 124) that project outwards towards the U-flanks, which are engaged in the locking recesses (34) of the U-flanks. [6] Building opening shading device according to one of the preceding claims, characterized by , that the receptacles (5) provided for fastening the crossbeam unit to the building side can be detached from below when the crossbeam unit is mounted, so that the crossbeam unit can be inserted from below. [7] Building opening shading device according to one of the preceding claims, characterized by, that it is designed as a Venetian blind, the cross member (3) as a Venetian blind headboard (3) and the curtain (6) as a slat curtain (6). [8] Building opening shading device according to one of the preceding claims, characterized by , that the recordings (5) are attached to a ceiling wall (D) on the building side. [9] Building opening shading device according to one of the preceding claims, characterized by that it has an arrangement according to one of claims 10 to 20. [10] Arrangement (101, 102, 3) for a building opening shading device, with a crossbeam (3) supporting a winding shaft (7) and a connecting module (101, 102) for connecting a guide rail (4) and the crossbeam (3), which has a connector (101) which in turn, a plug-in pin section (116) which can be inserted from above into a vertically extending insertion groove (9) of the upwardly open guide rail (4) and a mounting flange (111) for attaching the connector (101) in the area of ​​an end face of the cross member (3), wherein the plug-in pin section (116) is connected to the mounting flange (111) in such a way that it projects beyond the end face and the underside of the cross member (3), characterized by , that The connecting module (101, 102) comprises a retaining frame (102) which can be inserted into the end face of the U-shaped internally contoured crossbeam (3) with a fit and anchored there, with two vertical webs which are connected by a crossbeam bridging the U-shape and a crossbeam resting on the U-base, wherein the webs have outer circumferential contact surfaces for bearing against the inner contour of the crossbeam (3), and at least one of the crossbeams has on its side facing the other crossbeam a bottom section (121) provided as a support for the fastening flange (111), wherein the fastening flange (111) is screwed to the bottom section (121) with a screw (117) which can be removed from below. [11] Arrangement (101, 102, 3) according to claim 10, characterized by, that the connecting module (101, 102) has two parallel flank walls (121a) limiting the bottom section (121) in the longitudinal direction of the crossbeam, which project towards the other crossbeam and form with the bottom section (121) an insertion groove open towards the end face of the crossbeam for the fastening flange (111), wherein a further bottom section (122) or a further insertion groove for the fastening flange (111) is formed on the other crossbeam, and wherein on the fastening flange (111) two parallel edge walls (111a) limiting the fastening flange (111) in the longitudinal direction of the crossbeam project upwards to abut the flank walls (121a) of the upwardly open insertion groove (121) on the bottom of the crossbeam (3). [12] Arrangement (1, 2, 3) for a building opening shading device, with a crossbeam (3) supporting a winding shaft (7) and a connecting module (1, 2) for connecting a guide rail (4) and the crossbeam (3), which has a connector (1) which in turn has a plug-in section (15, 16) that can be inserted into a vertically extending, undercut insertion groove (9) of the upwardly open guide rail (4) and a fastening section (11) attached to the crossbeam (3) in the area of ​​an end face of the crossbeam (3), wherein the plug-in section (15, 16) is connected to the fastening section (11) via a connecting section (12, 13, 14), and wherein the plug-in section (15, 16) projects beyond the end face and the underside of the crossbeam (3), characterized by , that the connecting section (12, 13, 14) has connecting wall sections (12) extending over a height and pointing outwards, and the plug-in section (15, 16) has plug-in pin legs (15, 16) arranged horizontally next to each other and projecting outwards from the connecting wall sections (12) in the longitudinal direction of the crossbeam, one or both of which are designed as a bending spring that can be prestressed horizontally towards the other plug-in pin leg (16, 15), wherein the two plug-in pin legs (15, 16) have contact surfaces extending vertically and in the longitudinal direction of the crossbeam on their opposite sides, with which the plug-in pin legs (15, 16) bear against associated flanks (41, 42) of the insertion groove (9) when inserted. [13] Arrangement (1, 2, 3) according to claim 12, characterized by, that the contact surface on each plug pin leg (15, 16) designed as a bending spring is formed on an undercut detent projection facing away from the other plug pin leg (16, 15), projecting in the horizontal direction, which in the inserted state engages with its undercut (19, 20) an undercut (43, 44) projecting in the horizontal direction from the flank (41, 42) of the insertion groove (9) abutting the plug pin leg (15, 16) towards the other plug pin leg (16, 15). [14] Arrangement (1, 2, 3) according to claim 12 or 13, characterized by, that at least one, preferably both, plug pin legs (15, 16) has a stop projection (17, 18) projecting upwards beyond the contact surface of the other plug pin leg (16, 15), which, in the inserted state, rests on an upper surface of the flank (41, 42) of the insertion groove adjacent to the plug pin leg (15, 16), wherein the stop projection (17, 18) is advantageously undercut and a wall (41, 42) forming the flank (41, 42) of the insertion groove engages behind its undercut. [15] Arrangement (1, 2, 3) according to claim 12, 13 or 14, characterized by , that each plug pin leg (15, 16) designed as a bending spring has a chamfer or rounding along an edge bridging a distance in the vertical direction on the outside side of its contact surface in the longitudinal direction of the crossbeam. [16] Arrangement ( 1, 2, 3) at least according to claim 13, characterized by, that the undercut (19, 20) of the locking projection on the side of each plug pin leg (15, 16) designed as a bending spring, located in the longitudinal direction of the crossbeam, extends over a distance in the vertical direction and recedes as a chamfer or rounding from the contact surface in the horizontal direction to the other plug pin leg (16, 15). [17] Arrangement ( 1, 2, 3) at least according to claim 13, characterized by , that the undercut (19, 20) of the locking projection on the side of each plug pin leg (15, 16) designed as a bending spring which is located inwards in the longitudinal direction of the crossbeam follows a curve convex inwards in the longitudinal direction of the crossbeam, arc segment or arrow-shaped. [18] Arrangement (1, 2, 3) according to any one of claims 12 to 17, characterized by, that the fastening section (11) of the connector (1) is designed as an insertion pin (11) which projects inwards in the longitudinal direction of the cross member above the two pin legs (15, 16) from one of the inwards extending connecting wall sections (12) in the longitudinal direction of the cross member, wherein this connecting wall section (12) is oriented normal to the longitudinal direction of the cross member, and a retaining frame (2) of the connecting module (1, 2) which can be inserted into and anchored at the end face of the U-shaped internally contoured cross member (3) comprises at least one insertion channel (21, 22) open at the end face and matching the insertion pin (11), which surrounds the inserted insertion pin (11) on its flanks. [19] Arrangement (1, 2, 3) according to claim 18, characterized by, that the retaining frame (2) has a closed cross-section following the U-shaped inner contour of the cross member (3) and bridging the U on the side facing away from the U-base, with outer circumferential contact surfaces (25, 26, 27, 28, 29) for contact with the U-shaped inner contour and with flanged longitudinal edges (31) of the cross member (3), and with an insertion channel (21) on a web abutting the U-base and another insertion channel (22) on a web bridging the U. [20] Arrangement according to any one of claims 10 to 19, characterized by that it is suitable for a Venetian blind and has a cross member (3) designed as a head rail (3) of the Venetian blind.

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