SYSTEM FOR MOUNTING A FUNCTIONAL UNIT FOR A BUILDING OPENING SHADING DEVICE IN A MOUNTING ARRANGEMENT

Description

[0001] The invention relates to a system with a functional unit for a building opening shading device and with a fastening arrangement that can be pre-assembled on the building side, suitable for fastening the functional unit in the fastening arrangement that can be pre-assembled on the building side, according to the preamble of claim 1.

[0002] In an arrangement known from EP 2 500 507 B1, U-shaped fastening brackets are provided to form the fastening arrangement. These brackets are provided on their underside with a pivoting locking bracket that can be moved from an open position to a closed position. When open, this locking bracket allows the functional unit, which in this case is provided with a box-shaped housing, to be pushed in, and when closed, engages underneath it so that it is secured against slipping out as desired. While the locking brackets are being actuated, however, the pushed-in functional unit must simultaneously be manually held in position and secured against falling. This, however, proves to be very difficult and strenuous. The known arrangement therefore proves not to be sufficiently easy to install.

[0003] International patent application WO 2019 / 148219 A1 discloses an arrangement for fastening the box-shaped, bottom-open head rail of a Venetian blind to a building surface. A fastening bracket is provided whose side legs can be expanded against their inherent elasticity and each has a projection with an indentation at their lower ends. The box-shaped, bottom-open head rail is provided with inwardly bent retaining webs at the lower ends of its side legs, which can be snapped into the indentations of the bracket-side projections. The box-shaped head rail is first inserted at an angle to the fastening bracket with the lower end of one side leg into the indentation of the projection of the associated leg of the fastening bracket, with the diagonally opposite upper corner of the head rail resting under tension against the opposite leg of the fastening bracket.The top rail, tilted relative to the fastening bracket, is then rotated into the fastening bracket, whereby the leg of the fastening bracket that interacts with the aforementioned upper corner of the top rail is spread against its inherent elasticity and, at the end of the rotational movement, the lower end of the associated leg of the top rail is snapped into the indentation of the lower projection of the corresponding leg of the retaining bracket. With this known arrangement, there is therefore only a one-step method of fastening the top rail in the fastening bracket, in the form of the lower ends of the side legs of the top rail being snapped into the lower end regions of the side legs of the fastening bracket. No additional securing is provided here. This known arrangement therefore also proves to be not sufficiently safe and reliable.In addition, screwing the top rail into the mounting bracket when the mounting bracket is spread is not work-friendly and makes installation more difficult.

[0004] German patent application DE 10 2004 016 545 A1 discloses an arrangement for the rapid installation of the box-shaped, upwardly open head rail of a Venetian blind to an associated housing ceiling, comprising a ceiling-mounted mounting bracket, one leg of which is provided with a retaining claw at its end, and the other leg of which is designed as a spring leg equipped with a retaining claw. The upper ends of the box-shaped, upwardly open head rail are provided with hooking claws. During installation, a holding claw of the head rail is first hooked into the associated hooking claw on the bracket. The box-shaped head rail is then pivoted upwards on the other side, and its hooking claw there engages the associated holding claw of the spring leg.The fastening device described in DE 10 2004 016 545 A1 therefore only includes a single-stage fastening of the box-shaped top rail, in the form of the upper ends of the side legs of the top rail engaging in the side legs of the mounting bracket. This known arrangement therefore also proves to be insufficiently secure and reliable.

[0005] A similar arrangement is derived from the German utility model DE 20 2006 004 608 U1. In this known arrangement, the upwardly closed box of a Venetian blind is provided with locking strips projecting outwards in the area of ​​its upper corners. The associated retaining bracket is provided with inner retaining claws assigned to the locking strips, with one retaining claw being fixed and the other spring-loaded. During installation, the box is first tilted relative to the mounting bracket with an edge strip inserted into the fixed retaining claw and then rotated into the mounting bracket until the other edge strip engages with the spring-loaded retaining claw.This can be provided with a fork below its upper end, allowing a two-stage locking movement, whereby the box is first placed on the lower fork of the spring-loaded retaining claw and only then moves over the upper end of the spring-loaded retaining claw, locking in place. Even with this known arrangement, only a single-stage fastening is achieved in the form of a locking connection between the upper, box-side edge strips and the bracket-side retaining claws. No additional locking mechanism is provided. Therefore, the arrangement described in DE 20 2006 004 608 U1 also proves to be insufficiently secure and reliable.

[0006] German patent application DE 1 921 979 A1 discloses a generic system. This system is an arrangement for attaching the box of a roller blind to a ceiling or wall. The system comprises a bracket-shaped holding part that extends over the box and can be attached to the ceiling, etc., and has two undercut recesses in the upper corners into which the box, which is open at the top, can be snapped using corresponding bends in the upper ends of its lateral legs, thereby temporarily holding the box in the snapped-in position. For additional security, an arm is provided that engages below the box and can be snapped onto the lower end of the lateral legs of the bracket-shaped holding part. For this purpose, it is provided with locking notches into which suitable locking projections on the lateral legs of the holding part can snap.Accordingly, two spring-loaded locking connections are provided: one for the upper ends of the side box legs and the other for the arm that engages underneath the box. However, such spring-loaded locking connections can unintentionally disengage due to the application of force. Therefore, despite its two-stage fastening, the arrangement proves to be insufficiently secure and reliable.

[0007] Based on this, it is therefore the object of the present invention to improve the system in such a way that a high level of ease of assembly and reliability can be achieved using simple means.

[0008] This object is achieved according to the invention by the features of claim 1.

[0009] In a system according to the invention, at least one locking device is assigned to the elements that can be brought into engagement with one another in the form of the fastening arrangement and the functional unit, which locking device automatically moves into its locking position when the functional unit is inserted into the fastening arrangement and transfers at least the dead weight of the functional unit to the fastening arrangement and fixes the position of the functional unit in at least one spatial direction. According to the invention, it is further provided that the locking device has at least one preferably resilient locking lug provided on one of the elements that can be brought into engagement with one another and a supporting edge assigned to this on the respective other element, which is engaged under by the locking lug in the locking position.According to the invention, the fastening arrangement is designed as a fastening bracket arrangement which has two fastening brackets assigned to the end regions of the functional unit, wherein the locking device is assigned to the region of the fastening brackets. The functional unit has a base part which functions as a mounting base and is in the form of a space boundary, for example a box-shaped enclosure or housing or the like with a profile-like cross-section open at the top or bottom. Furthermore, according to the invention, the elements which can be brought into engagement with one another can additionally be locked against one another by means of a manually operable locking device. For this purpose, at least one locking bolt having a locking edge is provided on each of the elements which can be brought into engagement with one another, and on the respective other element there is provided an insertion recess assigned to said locking bolt and having a boundary edge facing the bolt-side locking edge.In this case, the locking bolt can be moved with one end region beyond the boundary of the element receiving it facing the associated entry recess and can be brought into engagement with the associated entry recess of the other element.

[0010] These measures enable, on the one hand, very simple and work-friendly assembly of the functional unit and a particularly stable and simple design. The fitter brings the functional unit and the pre-assembled fastening arrangement together and does not require any additional assistance or tools. The functional unit is then already suspended so that further work can follow without having to hold the functional unit by hand. On the other hand, these measures ensure that the functional unit only needs to be temporarily secured against falling using the locking device when it is inserted into the fastening arrangement, since it can then be permanently secured to the fastening arrangement using the additional locking device. This enables a simple and lightweight design of the locking device and advantageously ensures double fall protection for the functional unit.

[0011] Advantageous embodiments and appropriate further developments of the overarching measures are specified in the subclaims.

[0012] Due to its spring action, the spring-loaded locking lug automatically moves into its locking position, which engages under the assigned support edge. This not only ensures a defined completion of the insertion process but also reliably locks and adequately secures the functional unit against falling. A further advantage is that the underside of the functional unit remains free, so that any lower outlet slot for a shading device is not blocked or obstructed.

[0013] The base part can be expediently provided at its ends with lateral cover caps bridged by a peripheral cover. A spring-loaded locking lug is assigned to each of the two fastening brackets assigned to the end areas of the functional unit, and the base part has a continuous support edge for both locking lugs in the area of ​​its cover. These measures provide a particularly reliable hold for the functional unit and simplify the design of the locking device.

[0014] In a further development of the above measures, each locking lug can be arranged at the end of an associated leg spring, which is attached with its end remote from the lug to the associated fastening bracket, wherein the leg spring is preferably provided on the side of the fastening bracket facing away from the outside of the functional unit, which has a passage window associated with the locking lug, through which the locking lug can project inward. The leg spring results in a long spring arm, which facilitates the provision of a large spring travel, so that the locking lug can reach a reliable locking position without the spring force to be overcome when inserting the spatial boundary of the functional unit into the associated fastening bracket arrangement becoming undesirably high.

[0015] Advantageously, each locking lug can have a downward-facing, sloping contact surface. This contact surface allows the locking lug to engage the facing upper corner of the functional unit when the functional unit is inserted into the associated fastening arrangement. This causes the locking lug to slowly deflect laterally during the insertion process and tension the spring, thus facilitating the insertion process. The locking lug can easily have a comparatively large height, which allows for a large inward projection in the locked position and thus particularly reliable fixation of the functional unit inserted into the fastening arrangement.

[0016] A further useful measure may be for the side leg of each fastening bracket facing away from the locking device, preferably pointing outwards, to be designed as an inwardly angled spring leg, the free end of which can be designed as an inlet guide bent outwards at an angle and deflected outwards by the approaching functional unit. This ensures that the fastening bracket is slightly bent open when the functional unit is inserted or pushed in, and thus rests against the functional unit without play under the action of the spring force of the spring leg, resulting in a wobble-free assembly.

[0017] Advantageously, a locking bolt can be mounted on each cover cap, and each fastening bracket can have a recess associated with it, which provides good stability. The locking bolt can be designed as a pivot lever, preferably designed as an angle lever, that can be rotated about a vertical axis. A horizontal locking edge that the locking bolt can move over can be provided in the area of ​​the recess associated with it. A rotatable pivot lever can advantageously be moved smoothly and without jamming. The locking edge that can be moved over not only signals the end of the pivoting movement but also ensures sufficient security against unwanted release.

[0018] The blocking device and the locking device provided according to the invention can expediently be positioned in height such that the upper side of the functional unit is spaced from the upper end region of the fastening arrangement in the end position introduced into the associated fastening arrangement.

[0019] This ensures that a gap remains between the top of the fully inserted functional unit and the upper limit of the fastening arrangement, so that components emerging from the functional unit upwards, such as cables, etc., are not trapped.

[0020] In a further development of the overarching measures, it can be provided that the fastening arrangement, or each fastening bracket of the fastening arrangement, is provided with at least one radially projecting connecting lug, preferably with an upper and a lateral connecting lug, each of which can be connected to an associated support bracket anchored to the building. This results in simple pre-assembly of the fastening arrangement, wherein the connection between the fastening arrangement and the associated support brackets can advantageously be designed to allow relative movements for tolerance compensation.

[0021] Particularly advantageously, each connecting lug can have at least two degrees of adjustment freedom relative to the associated support bracket when connected, expediently in the form of lateral displacement transverse to the longitudinal axis of the functional unit and rotation about its longitudinal axis. The fastening arrangement and thus the functional unit mounted on it are suspended from the support brackets in a virtually floating manner, so that the position of the functional unit relative to the mounting base can be varied within the given degrees of freedom, thereby compensating for unavoidable manufacturing and assembly tolerances. The functional unit already held in the fastening arrangement can therefore be additionally secured on the building side, for example, advantageously by lateral guide rails projecting downwards from it, which can be secured on the building side, permanently fixing its position without creating internal stresses.

[0022] A practical implementation of the above measures can consist in connecting each connecting lug to the respective associated support bracket by means of a pin, preferably designed as a screw, passing through a curved slotted hole. The slots assigned to the spaced-apart connecting lugs have a bending radius corresponding to the distance between the pins passing through them. These measures provide the desired translational and rotational degrees of freedom in a simple manner.

[0023] To complement the above measures, it can be provided that the locking device in its locking position and, if applicable, the locking device in its locking position have play in the longitudinal direction of the functional unit. This provides an additional degree of freedom of movement in the longitudinal direction of the functional unit and therefore advantageously also enables axial adjustability of the functional unit.

[0024] A preferred embodiment of the invention is described in more detail below with reference to the drawing: In the drawing: Figure 1 shows a vertical section through an attachment box placed on a window or door frame with a functional unit of a building opening shading device designed as a textile screen accommodated therein, Figure 2 shows a fastening arrangement of the arrangement according to Figure 1belonging fastening bracket with the functional unit of the building opening shading device during the insertion into the fastening arrangement, Figure 3 a perspective view of the arrangement according to Figure 2 with the functional unit in its final position, Figure 4 shows the arrangement according to Figure 3 with double secured functional unit against falling and Figure 5 an example of the measures assigned to the fastening arrangement for tolerance compensation in Figure 1 corresponding representation.

[0025] In Fig. 1a window or door frame 1 assigned to a building opening is indicated, onto which an add-on box 2 is placed, which closes off the building opening at the top and has an interior space 3 open at the bottom. A shading device is assigned to the said building opening. This contains a functional unit 4 accommodated in the interior space 3 of the add-on box 2. This has a base part 5 acting as a mounting base, from the lateral ends of which downwardly projecting guide rails 6 extend, which can be fixed on the building side in the area of ​​the reveal of the building opening, as indicated by a fastening screw 7. The add-on box 2 accordingly forms a shell that can be installed in a building, in whose downwardly open interior space 3 the functional unit 4 of the intended building opening shading device is placed.The base part 5 is a room boundary, for example a box-shaped enclosure or housing or the like with a profile-like cross-section open at the top or bottom. . The base part 5 can be adapted to different purposes and can be designed, for example, as a head bar open at the top or as a housing provided with a lower outlet slot or the like.

[0026] The top-mounted box 2 can be designed as a foam block into which a shell 8 containing the interior space 3 can be molded. Other designs would of course also be conceivable, for example as a brick or concrete molding or as a box composed of plastic panels or the like. The bottom-open top-mounted box 2 is provided in the manner of a so-called projection box at the lower end of its outer leg, i.e. the leg facing the outside of the building, with a plaster strip 9 adjoining the shell 8 and projecting outwards by the thickness of a plaster that can be applied externally, and at the lower end of its inner leg with a connecting profile 10 adjoining the shell 8 for connection to the upper leg of the associated window or door frame 1.

[0027] The aforementioned building opening shading device can be designed, for example, as a textile screen. The functional unit 4 accordingly contains a horizontal winding shaft (not shown in detail here) mounted on the base part 5, which is driven in the direction of rotation and onto which a fabric web, also not shown in detail, can be wound or unwound. This fabric web functions as a shading element and extends from the box forming the base part 5, which is provided with a lower outlet slot for this purpose, and is guided with its lateral edges in an associated guide groove of the lateral guide rails 6.Instead of a textile screen, another building opening shading device can of course also be provided, for example a roller shutter and / or fly screen or a Venetian blind or the like, wherein in each case a functional unit 4 with a base part 5 fixable in the interior 3 of the attachment box 2 is provided.

[0028] The box forming the base part 5 here can, as can be seen from the Fig. 3 and 4As can be clearly seen, have a peripheral cover 11, which is closed at the lateral ends by cover caps 12 attached thereto. The peripheral cover 11 bridging the two cover caps 12 can be formed in one piece or in several parts, wherein the individual parts can be manufactured as sections of an extruded profile made of light metal. The cover caps 12 can be manufactured as cast pieces made of light metal. The cover caps 12 can be fastened with fastening means, for example with Fig. 1 to 4 indicated screw domes 12a or the like for attaching support plates etc. associated with the mentioned winding shaft or its drive motor.

[0029] In order to fix the box of the functional unit 4, which here forms the base part 5, in the interior 3 of the add-on box 2, to the building, a fastening arrangement is provided which is pre-assembled in the interior 3 and which, in the example shown, has two U-shaped fastening brackets 13 which are assigned to the end regions of the box, which here forms the base part 5, i.e. the cover caps 12, and are advantageously open downwards. The functional unit 4, with its base part 5, can be pushed into these fastening brackets from below during assembly and can be secured to these brackets in the pushed-in state such that its own weight is transferred to the elements of the fastening arrangement and it is secured in at least one spatial direction, i.e. at least against falling. Of course, more or fewer fastening brackets 13 can also be provided to form the fastening arrangement.The insertion height of the functional unit 4 in the fastening arrangement formed here by the fastening brackets 13 is limited in such a way that between its upper side and the upper limit of the fastening arrangement, ie in the example shown between the upper side of the base part 5 of the functional unit 4 and the upper bracket yoke of the fastening brackets 13, a gap of . Fig. 1visible distance remains so that elements emerging upwards from the functional unit 4, such as cables, etc., are not clamped. The shape of the fastening brackets 13 and the box forming the base part 5 is not restricted to the present example, but can be designed as desired. It must only be ensured that the functional unit 4, in this case the box forming the base part 5, can be inserted into the intended fastening arrangement, here in the form of the fastening brackets 13, whereby the type of insertion is not restricted to the above-mentioned insertion from below. Other types such as pivoting in or similar are also conceivable. The term insertion therefore stands for any type of insertion, i.e. bringing into engagement.

[0030] The leg of a U-shaped fastening bracket 13 of the fastening arrangement, which contains the free end of a fastening bracket 13 and points outwards, i.e. towards the outside of the building, is designed as a spring leg 14, which is arranged here in such a way that it is deflected outwards by the inserted or pushed-in functional unit 4, here by the box forming the base part 5 of the functional unit 4, and accordingly rests with prestress on the associated box wall. The spring leg 14 is inclined inwards from the connection area to the upper bracket yoke in such a way that the clear distance of the lower leg end is smaller than the width of the functional unit 4 or the box forming the base part 5, thus resulting in a reliable, resilient contact of the lower leg area on the box. The spring bracket 13 is therebyThe inserted functional unit 4 or its box-shaped base part 5 is slightly widened. The lower end of the spring leg 14 is bent obliquely outward to form an inlet guide 15, against which the box, etc., runs with its facing upper corner when inserted into the fastening bracket arrangement of the fastening arrangement, whereby the spring leg 14 is deflected outward and the fastening bracket 13 is widened.

[0031] The functional unit 4, i.e., the box forming its base part, can be manually inserted from below into the fastening arrangement, here into the fastening brackets 13, and is secured against falling by an automatically activated locking device and, preferably, additionally, by a manually operable locking device. Therefore, no second assistant or tools are required to assemble the functional unit 4 or the box forming its base part 5.

[0032] To form an automatically activated first locking device, as in the example shown, on the elements that can be brought into engagement with one another and in this case can be pushed into one another in the form of the fastening arrangement or in this case its fastening bracket 13 and the functional unit 4 or in this case its base part 5, which as already mentioned above can be designed as a box etc., on the one hand at least one preferably resilient locking lug 16, preferably having a horizontal locking edge, and on the other hand at least one preferably horizontal supporting edge assigned to this, under which the locking lug 16 automatically snaps in when the desired end position is reached, ie in this case the desired insertion height of the functional unit 4 or its base part 5, preferably due to its spring action.The resilient locking lug 16 can advantageously be made of spring steel to promote a reliable locking effect. However, it would also be conceivable to provide other locking means, such as an automatically engaging locking pawl, etc., instead of a preferably resilient locking lug to form the aforementioned locking device. This pawl, for example, can be pivotally mounted outside the center of gravity and accordingly engages its locking position by gravity.

[0033] To perfect the support of the functional unit already held by the locking device described above, here in the form of a resilient locking nose arrangement, a manually operable locking device is provided, as in the example shown, with a movable locking element on the one hand and a stationary locking receptacle assigned to it on the other hand. .In the example shown, to form the locking device, at least one locking bar 17 having a horizontal locking edge is provided, on the one hand, and an associated insertion recess 18 having a horizontal locking edge, on the other hand, into which the locking bar 17 can be manually inserted. The locking bar 17 can be moved beyond the boundary of the element receiving it facing the insertion recess 18.

[0034] When inserting, i.e. in this case pushing the box forming the base part 5 of the functional unit 4 into the fastening arrangement, here in the form of the fastening brackets 13, an initial fixing of the functional unit 4 takes place automatically by each locking lug 16 which, due to its spring action, automatically snaps under the associated supporting edge, thereby creating an initial locking position and thus transferring the weight of the functional unit 4 to the fastening arrangement and securing the functional unit 4 against falling, i.e. at least in the direction of gravity, in space. The final fixing can then be achieved by manually actuating each locking bolt 17.In simple cases, it would be conceivable to provide only the first provisional locking or fixing by means of at least one resilient locking lug 16 and to dispense with the fixing by means of at least one manually operable locking bolt 17 etc.

[0035] Advantageously, in order to secure the functional unit 4 or its base part 5, two resilient locking lugs 16 assigned to the end regions of the functional unit 4 or its base part 5 and supporting edges assigned to these and, if appropriate, two locking bolts 17 assigned to the said end regions and insertion recesses 18 assigned to these are provided. .

[0036] In the present embodiment, the two resilient locking lugs 16 are assigned to the two fastening brackets 13 forming the fastening arrangement, with the assigned supporting edge being provided in the region of the box forming the base part 5. Opposite, the two locking bars 17 are provided on the box side, and the insertion recesses 18 assigned to them are provided in the region of the two fastening brackets 13. Advantageously, each end region of the box forming the base part 5 of the functional unit 4 is assigned a resilient locking lug 16 with an assigned supporting edge and a locking bar 17 with an assigned insertion recess 18.

[0037] The locking lug 16 is in the example shown, as best seen from Fig. 2can be seen, is arranged at the end of an associated leg spring 19, which is attached with its end remote from the nose to the associated fastening bracket 13. The downwardly facing limit of the locking nose 16 is designed as an inclined contact surface 20, which, when the box, which here functions as the base part 5, is inserted into the fastening bracket arrangement, runs into the facing upper corner of the box, whereby the leg spring 19 is deflected backwards against its spring force and is thereby prestressed, as shown in Fig. 2 The leg spring 19 is located to ensure a clean installation of the rear side of the box, which here forms the base part 5 of the functional unit 4, on the adjacent rear leg of the associated fastening bracket 13 on the outside of the fastening bracket 13. This is provided with an associated, best from the Fig. 3 and 4recognizable passage window 21, through which the associated locking lug 16 can project inwards, ie into the inner area of ​​the fastening bracket 13 assigned to the functional unit 4.

[0038] The shell-side panel 11 of the box, which acts here as the base part 5 of the functional unit 4, is, like the Fig. 3 and 4 further show, open at the rear, whereby the end of the cover 11 there can form a horizontal support edge 22 extending over the entire length of the cover, under which several, i.e. here the two existing locking lugs 16 can snap into place under the effect of the restoring force of the pre-tensioned leg spring 19 designed as a leaf spring. However, other designs of the locking lug 16 and the associated support edge 22 would also be conceivable. It must only be ensured that the locking lug 16 can automatically and reliably lock the functional unit 4 in the fastening arrangement.

[0039] The two locking bolts 17 assigned to the end areas of the box forming the base part 5 of the functional unit 4 are, in the example shown, like the Fig. 3 and 4 further show, mounted on the respective cover cap 12, expediently on its edge flange, wherein the fastening brackets 13 assigned to the end regions of the box have the respective associated insertion recess 18. This is designed as a cut-out rectangular window open on the insertion side, which has a horizontal blocking edge 23. This is formed here by the lower limit of the insertion recess 18.

[0040] The locking bolt 17 is designed here as a pivoting lever mounted on the associated cover cap 12, in this case its edge flange, so as to be rotatable about a vertical axis. The lever can be brought into engagement with the insertion recess 18 by means of an end region movable beyond the boundary of the cover cap 12 facing the fastening bracket 13. The lever has a horizontal locking edge 24 facing the locking edge 23, which is formed here by its underside. The locking bolt 17, which in the example shown is designed as a pivoting lever rotatable about a vertical axis, can, as shown, be designed as an angle lever to achieve a compact arrangement. Other types and forms of locking are also conceivable. For example, sliding bolts or brackets of the type provided for in the prior art described above, or the like, could also be provided.

[0041] In the representation according to Fig. 3the locking bolt 17 is in the non-locking, open state outside the associated entry recess 18. In the illustration according to Fig. 4 the locking bolt 17 is retracted into the associated recess 18, whereby the locking edges 23, 24 are in mutual engagement. To prevent the locking bolt 17 from being released automatically, a Fig. 4 indicated locking bar or knob 25 must be provided, over which the locking bolt 17 must pass and which locks the locking bolt 17 in the Fig. 4 underlying blocking position.

[0042] In the example shown, the locking lugs 16, including the leg spring 19, are each assigned to a mounting bracket 13, and the associated support edge 22 is assigned to the box-side panel 11. The locking bolts 17 are each assigned to a panel cap 12, and the associated insertion recesses 18 are each assigned to a mounting bracket 13. However, a reverse assignment would also be conceivable. It would also be possible to assign the locking lugs 16 and the insertion recesses 18 to different mounting brackets 13.

[0043] The fastening arrangement can be pre-assembled to fix the functional unit or its base part 5 to a building-side base. Accordingly, in the example shown, the fastening brackets 13 provided for forming the fastening arrangement can be pre-assembled to a building-side base, here as already mentioned above, in the interior 3 of the top-mounted box 2. For this purpose, the building-side base, in the example shown to wall areas of the interior 3, as Fig. 1As can be seen, the fastening arrangement, here in the form of the respectively assigned fastening brackets 13 forming the fastening arrangement, is anchored to the support brackets 26, 27, to which the fastening arrangement, here in the form of the respectively assigned fastening bracket 13, can be connected via assigned, radially projecting connecting lugs 28, 29. In the example shown, each fastening bracket 13 is assigned an upper support bracket 26 and a lateral support bracket 27. The fastening brackets 13 forming the fastening device here accordingly each have an upper connecting lug 28 and a lateral connecting lug 29, which can each be connected to the assigned support bracket 26 or 27 via a pin, preferably designed as a screw 30. In the example shown, the connecting lugs 28, 29 are arranged transversely, preferably at right angles to the longitudinal direction of the box forming the base part 5 of the functional unit 4.

[0044] The screw 30 engages in Fig. 5According to a particular inventive concept, through or into an associated elongated hole 31, preferably provided on the connection lug side, thereby forming a pin and slot connection. The elongated holes 31 are advantageously designed as curved elongated holes, with a radius corresponding to the distance between the pins formed by the screws 30 and cooperating therewith. The elongated hole 31 of the upper connection lug 28 is concavely bent downwards and the elongated hole 31 of the lateral connection lug 29 is concavely bent upwards. In this way, the functional unit 4, which is held and fixed without play in the fastening arrangement, here in the fastening brackets 13 forming this arrangement, here the box acting as the base part 5 of the functional unit 4, receives two Fig. 5Degrees of freedom a, b indicated by arrows, which, with the intended direction of the connecting lugs 28, are present as a translational degree of freedom a directed transversely to the box's longitudinal axis and as a rotational degree of freedom b with respect to the box's longitudinal axis. By changing the direction of the connecting lugs 28, 29 relative to the longitudinal direction of the functional unit 4, other directions of the degrees of freedom can also be achieved. The screws 30 are only tightened far enough that the desired mutual mobility is still possible. According to the further inventive concept, this ensures that the functional unit 4 accommodated in the fastening brackets 13 can still move accordingly together with the fastening arrangement that accommodates it before the final, building-side fixing in order to compensate for manufacturing and assembly tolerances.

[0045] To achieve a third degree of freedom of the functional unit 4, here the box forming the base part 5 in the box's longitudinal direction, it can be provided that each locking lug 16 and, if applicable, each locking bolt 17 has play in the box's longitudinal direction relative to the associated support edge 22 or associated insertion recess 18. These measures ensure that the functional unit 4, which is movably arranged via the fastening arrangement on a building-side base, here in the interior 3 of the top-mounted box 2, is also axially displaceable relative to the fastening arrangement.

[0046] As a result of the given degrees of freedom, it is achieved that the box of the functional unit 4, which here forms the base part 5 of the functional unit 4, can still move during its final fixing in the building by means of suitable fixing means, for example by means of the guide rails 6 or the like that protrude from it and can be fixed in the building, in such a way that all existing manufacturing and assembly tolerances are compensated and a stress-free arrangement is ensured.

Claims

1. System having a functional unit (4) for a building opening shading device and having a fastening arrangement that can be pre-mounted on the building, suitable for fastening the functional unit (4) to the building in the fastening arrangement that can be pre-mounted on the building, wherein the fastening arrangement is designed as a fastening bracket arrangement that has two fastening brackets (13) assigned to the end regions of the functional unit (4), and the functional unit (4) has a base part (5) acting as a mounting base in the form of a space-limiting space boundary, for example a box-shaped enclosure or casing or the like with a profile-like cross-section open at the top or bottom, and wherein the functional unit (4) can be inserted into the fastening arrangement and can be fixed thereto in the inserted state, and wherein the system has at least one blocking device which is assigned to the elements which can be brought into engagement with one another in the form of the fastening arrangement and the functional unit (4) in the region of the fastening brackets (13) and which, when the functional unit (4) is inserted into the fastening arrangement, automatically moves into its blocking position and transfers at least the dead weight of the functional unit (4) to the fastening arrangement and fixes the position of the functional unit (4) in at least one spatial direction, and wherein the system further comprises an additional, manually operable locking device, wherein the blocking device comprises at least one blocking lug (16), preferably springloaded, provided on each of the elements that can be brought into engagement with one another, and a support edge (22) which is associated with this on the other element and which, in the blocking position, is engaged under by the blocking lug (16) and wherein the elements that can be brought into engagement with one another can be locked against one another by means of the locking device, characterized in that at least one blocking bolt (17) having a blocking edge (24) is provided on each of the elements that can be brought into engagement with one another and on the respective other element an entry recess (18) is provided which is associated therewith and has a boundary edge facing the blocking edge (24) on the bolt side, and in that the blocking bolt (17) can be moved with an end region beyond the boundary of the element receiving it and facing the associated entry recess (18), and can be brought into engagement with the associated entry recess (18) of the other element.

2. System according to claim 1, characterized in that the base part (5) is provided at its ends with lateral cover caps (12) bridged by a circumferential cover (11), wherein both fastening brackets (13) are each assigned a resilient blocking lug (16) and the base part (5) has a continuous support edge (22) for both locking lugs (16) in the region of its covers (11).

3. System according to one of the preceding claims, characterized in that each blocking lug (16) is arranged at the end of an associated leg spring (19) which is attached with its end remote from the lug to the associated fastening bracket (13), wherein the leg spring (19) is preferably provided on the side of the fastening bracket (13) facing away from the functional unit (4), which has a passage window (21) assigned to the blocking lug (16), through which the blocking lug (16) projects inward, which preferably has a downwardly pointing, inclined thrust surface (20).

4. System according to one of the preceding claims, characterized in that the side leg of each fastening bracket (13) facing away from the blocking device and preferably pointing towards the outside of the building is designed as a spring leg (14) inclined inwards, the free end of which is designed as an entry guide (15) bent outwards at an angle and which can be deflected outwards by the space boundary (5) abutting against it.

5. System according to one of the preceding claims, if dependent on claim 2, characterized in that a blocking bolt (17) is mounted on each cover cap (12) and each fastening bracket (13) has an entry recess (18) assigned to it, wherein preferably each blocking bolt (17) is designed as a pivot lever that can be rotated about a vertical axis, preferably as an angle lever, and a locking edge (25) associated with the blocking bolt (17) is preferably provided in the region of the associated entry recess (18).

6. System according to one of the preceding claims, characterized in that the blocking device and the locking device can be positioned in height such that the upper side of the functional unit (4) is spaced apart from the upper boundary of the fastening device in its inserted end position.

7. System according to one of the preceding claims, characterized in that the fastening arrangement, preferably each fastening bracket (13) of the fastening arrangement, is provided with at least one radially projecting connecting lug (28, 29), preferably an upper connecting lug (28) and a lateral connecting lug (29), which can be connected in each case to an associated support bracket (26, 27) anchored to the building.

8. System according to claim 7, characterized in that each connecting lug (28, 29) has at least two degrees of freedom of adjustment relative to the associated support bracket (26, 27) when connected, and in that the functional unit (4) can be fixed in position by means of fixing means, preferably by means of lateral guide rails (6) projecting downwards from its base part (5) which can be fixed in its position on the building side.

9. System according to one of claims 7 and 8, characterized in that each connecting lug (28, 29) can be connected to the respectively assigned support bracket (26, 27) by means of a pin, preferably in the form of a screw (30), passing through a curved elongated hole (31), wherein the elongated holes (31) respectively assigned to the connecting lugs (28, 29) which are spaced apart from one another preferably have a bending radius corresponding to the distance between the pins passing through them.

10. System according to one of the preceding claims, characterized in that the blocking device in its blocking position and the locking device in its locking position have play in the direction of the longitudinal axis of the functional unit (4).

11. System according to one of the preceding claims, characterized in that the fastening arrangement assigned to the functional unit (4) can be pre-assembled in the interior (3) of a casing that can be installed on the building side, which is preferably designed as a foam-filled, attachable box (5) which is designed as a preferably foamed box that can be placed on a window or door frame (1) and has, on the underside of its lateral regions flanking the interior (3), a connection profile (10) for connection to the window or door frame (1) on the one hand and a plaster strip (9) projecting outwards on the other hand.

12. System according to one of the preceding claims, characterized in that the functional unit (4) is assigned to a textile screen or a roller shutter or a drive unit of a venetian blind, etc.