EP4012152B1 - Method for fixing a roller shutter guide rail and a roller shutter guide rail fixed to a roller shutter box assigned to a window - Google Patents

Description

field of technology

First of all, the invention relates to a method for fastening a roller shutter rail relative to a roller shutter box and a window or door frame, the roller shutter rail for a first bracket, which can be displaced in the direction of a longitudinal extent of the roller shutter rail to accommodate a change in length, having a fixed part of the building Carrier, preferably a window frame, is locked.

In addition, the invention relates to a roller shutter track rail that is positively fastened to a window with a window frame and associated with a roller shutter box by means of a form-fit projection and a form-fit receptacle, with a first form-fit fastening on the window frame causing a movement due to a change in length of the roller shutter track relative to the window frame in a longitudinal direction the roller shutter rail allows.

State of the art

Such roller shutter rails are already known in various configurations.

First is on the DE 20 2010 018 232 U1 to refer. The roller shutter running rail known from this has a chamber which is open on one side in cross-section to a contact surface on a window frame and has locking walls protruding on the open chamber wall. The roller shutter track can be used for a form-fit connection using the locking walls in the Rear grip can be locked to a head screw usually introduced in the window frame. Such positive connections is also on the US 4,234,033A and the DE 298 15 381 U1 to refer.

Furthermore, roller shutter rails are known, in which an inlet part of the roller shutter box can engage in order to align the rail relative to the roller shutter box. For this is about on the EP 1811 120 B1 to refer. A combination of an inlet part of a roller shutter box with a roller shutter rail is also from the DE 20 2017 006 165 U1 known. The inlet part here has an insertion tongue with a latching element. As a result, a mechanically fixed connection is formed between the roller shutter rail in the direction of a longitudinal axis of the roller shutter rail. Such a design is also from FR 2 804 156 A1 known for a displaceability of the roller shutter rail in a depth direction of the roller shutter box.
From the DE 44 45 303 C1 a method for fastening a roller shutter rail relative to the roller shutter box is known, in which locking with a roller shutter box-fixed pin is carried out by means of a locking part that is displaceably guided in the rail. In addition, the running rail is screwed to a window frame and can therefore not be easily detached.
From the EP 2 952 669 A1 a method for fastening a roller shutter rail is known, in which the fastening is carried out with a fastening pin formed on the roller shutter rail and extending in the direction of extension of the roller shutter rail on the roller shutter box or a side part of the roller shutter box. The roller shutter track can be locked in a carrier profile, which in turn is firmly connected to the building.
From the FR2 2998 608 A1 Finally, a roller shutter track is known which has a curved edge on a pin of the box can be attached and locked with the pin. Locking takes place via a barb-like projection that does not allow unlocking.

In practice, roller shutter rails are first installed when a window is installed, but then they often have to be dismantled again with a view to plastering and/or painting work later and then reinstalled. However, positive locking on the inlet part can be an obstacle here. Merely latching onto the frame part of the window, as is then often standard, can lead to the run-in rail slipping down over time and thus to rolling problems with regard to the roller shutter armor at the transition from the run-in part to the roller shutter rail.

Summary of the Invention

Based on the prior art presented, such as the DE 20 2017 006165 U1 , the invention deals with the task of specifying a method for fastening a roller shutter rail relative to a roller shutter box and a window or door frame and also a roller shutter rail fastened to a window with a window frame and associated with a roller shutter box in a form-fitting manner, which as a method Allows advantageous assembly and with respect to the roller shutter rail is a form-fitting attachment that allows the length of the roller shutter rail to be changed in a proven manner.

This object is achieved with regard to the method in the subject matter of claim 1, which is based on the fact that the roller shutter track is additionally reversible with the roller shutter box or is positively connected to the window frame to prevent displacement of the roller shutter track in the direction of the longitudinal extension.

This object is also achieved with regard to the form-fitted roller shutter track in the subject matter of claim 2, whereby it is based on the fact that the roller shutter track is attached to the roller shutter box or the window frame at the same time with a second form-fit fastener, that the form-fit projection of the second form-fit fastener by contact with a stop aligned transversely to the longitudinal extent prevents movement of the roller shutter track in the longitudinal direction and that the form-fitting projections or form-fitting receptacles are designed in such a way that both the first and the second form-fitting fastening allow the roller shutter track to be released from the first or second form-fitting fastening without any action allows for a form-fitting projection or a form-fitting recording itself.

The fact that, according to the invention, the roller shutter track is connected twice in a form-fitting manner, for example latched, with one of the form-fitting connections prevents a shift of the roller shutter rail in the direction of its longitudinal extent, the roller shutter rail can initially be easily installed and also removed again. Simple removal is often essential during the construction of a building because, as already mentioned, the roller shutter box with the roller shutter tracks is usually installed before the building has been plastered and, in order to prevent plastering, before removed again after plastering.

The method according to the invention now enables a two-fold form-fitting connection, which on the one hand enables simple (re) removal and (re-) installation, but on the other hand nevertheless, due to the second form-fitting connection to prevent displacement of the roller shutter track in the direction of its longitudinal extent, is prevented that the possible length expansion, which is compensated for by the first form-fitting fastening, can lead to the roller shutter rail moving downwards over time, resulting in a gap in relation to the roller shutter box, which impedes free movement of a roller shutter of the roller shutter.

The respective form-fitting connection can be a latching connection, for example, further formed, for example, by a latching projection which interacts with a latching recess.

The objective design of the positively connected, for example latched, roller shutter running rail ensures that the form-fitting fastening can be easily detached and restored. The positive-locking openings can have a longitudinal extension directed transversely to one another. The form-fitting opening of the second form-fitting attachment can be limited in size only to the form-fitting projection.

The procedure described and the configuration described is further preferably designed such that manual intervention in a running opening of the roller shutter rail and pulling on the roller shutter rail removes the roller shutter rail both from the form-fitting connection with the carrier and from the form-fitting connection with the roller shutter box is solvable. In the same way, the double positive connection can be made during installation by simply pressing in the direction of the carrier or in the direction of the roller shutter box.

In the course of installation, the form-fitting connection with the roller shutter box can be carried out first and then the form-fitting connection with the window frame. However, the design preferably also allows the form-fitting connection to be made with the window frame first and then, for example by pushing it up a certain way, the form-fitting connection to the roller shutter box.

In a further embodiment, it is preferred that the form-fitting projection and/or the form-fitting receptacle has a pull-out bevel, which also allows the form-fitting connection to be released by a force acting on the roller shutter rail remote from the form-fitting connection. In principle, there could be a reach-through opening that would allow manual action on the form-fitting projection in order to release the form-fitting fastening with the roller shutter box. The form-locking fastening, which can be overridden as it were, thanks to the extraction bevel mentioned above, allows the preferred handling of the roller shutter track when removing or installing without directly affecting the parts of the form-locking fastening, the form-fitting projection or the form-fitting receptacle itself.

Furthermore, the first form-fitting attachment can be achieved by an engagement of a form-fitting projection in a form-fitting receptacle that is longer in the direction of the longitudinal extension. For this purpose, a continuous opening over a length of the roller shutter track is usually and preferably provided. However, it can also be oblong holes.

It is further preferred that the second form-fitting attachment is achieved by engagement of a form-fitting projection in a form-fitting receptacle that is limited in the direction of the longitudinal extent to a dimension of the form-fitting projection. The form-fitting receptacle can be an opening in a wall of the roller shutter track when the form-fitting projection is attached to the roller shutter box.

The reverse is also possible, in that the form-fitting projection is attached to the roller shutter track and the form-fitting receptacle is attached to the roller shutter box.

In particular, it is preferred that the form-fitting projection of the second form-fitting attachment is formed on a spring arm. As a result, a constant load can be achieved in the form-fitting position when the spring arm acts on the form-fitting projection with pretension in the form-fitting position.

In a further preferred embodiment, the spring arm is part of a spring clip. This can also advantageously a run-in slope for the spring arm be achieved even with regard to the roller shutter track. In addition, this spring clip is preferably a closed spring clip.

The spring arm, more preferably the spring clip described, can be formed or attached to a side or bottom part of the roller shutter box. Alternatively, the spring arm or the spring clip can also be formed or attached to an inlet part of the roller shutter box. In this case, the molding more preferably means that the spring arm or the spring clip is produced integrally and uniformly with the inlet part using the plastic injection molding process.

If the form-fitting fastening is reversed, with the form-fitting projection being formed on the roller shutter track and the form-fitting receptacle on the roller shutter box, it is also preferable for the form-fitting projection to be connected to the roller shutter track via a spring, optionally a spring clip.

The spring arm or the spring clip can be screwed to the roller shutter box or the roller shutter track or, in turn, can be latched again, for example. In the case of latching, a non-detachable latching connection between the spring arm or the spring clip and the roller shutter track is preferred.

In a further alternative embodiment, the spring arm carrying the positive-locking projection or the spring clip can be attached to the window frame as a whole, in order to interact with a positive-locking receptacle of the running rail.

With regard to the roller shutter box, the form-fit receptacle or the form-fit projection, the latter then preferably via a spring arm or a spring clip, can be attached to a head piece of the roller shutter box.

The spring arm or the spring clip having the spring arm can basically be provided as a separate part designed for attachment, for example consisting of a metal material or a plastic that may differ from the material of the roller shutter box and/or the running rail and/or the window frame.

The proposed invention can also be used in so-called aluminum front-mounted boxes, for example during a renovation. The roller shutter box is preferably mounted with the slide bar attached.

Brief description of the drawings

Fig. 1

in einem Vertikalschnitt einen auf einem Fensterrahmen befestigten Rollladenkasten zur Aufnahme eines Rollladenpanzers, bei Zuordnung einer Rollladen-Laufschiene für den Rollladenpanzer, betreffend eine erste Ausführungsform;

Fig. 2

die Herausvergrößerung des Bereiches II in Figur 1;

Fig. 3

den Schnitt gemäß der Linie III-III in Figur 1;

Fig. 4

in perspektivischer Detaildarstellung einen rollladenkastenseitig festgelegten Federbügel zur Formschlusshalterung der Rollladen-Laufschiene an dem Rollladenkasten;

Fig. 5

eine im Wesentlichen der Figur 1 entsprechende Schnittdarstellung, jedoch eine Zwischenstellung im Zuge einer Demontage beziehungsweise Montage der Rollladen-Laufschiene betreffend;

Fig. 6

eine der Figur 2 im Wesentlichen entsprechende Darstellung, eine zweite Ausführungsform betreffend;

Fig. 7

eine dritte Ausführungsform einer Formschlusshalterung in einer Darstellung gemäß Figur 2;

Fig. 8

eine weitere der Figur 2 entsprechende Darstellung, betreffend eine vierte Ausführungsform.

The invention is further explained below with reference to the attached drawing, which, however, merely represents exemplary embodiments. This shows:

1

in a vertical section, a roller shutter box mounted on a window frame for receiving a roller shutter, with assignment of a roller shutter rail for the roller shutter, relating to a first embodiment;

2

the enlargement of area II in figure 1 ;

3

the cut according to the line III-III in figure 1 ;

4

a perspective detail view of a spring clip fixed on the side of the roller shutter box for form-fitting mounting of the roller shutter track on the roller shutter box;

figure 5

one essentially the figure 1 corresponding sectional view, but an intermediate position in the course of disassembly or assembly of the roller shutter track;

6

one of the figure 2 essentially corresponding representation, relating to a second embodiment;

7

a third embodiment of a form-fitting holder in a representation according to FIG figure 2 ;

8

another of the figure 2 corresponding representation relating to a fourth embodiment.

Description of the embodiments

Shown and described, first with reference to figure 1 , a roller shutter box 1 for windows and/or doors. The roller shutter box 1 sits on a frame 6 . On the roller shutter box 1 and the frame 6, a roller shutter rail 13 is attached.

The roller shutter box 1 is preferably made up of extruded plastic and/or injection-moulded plastic parts, more particularly hollow plastic profiles. The roller shutter box 1 has a rear wall 2 pointing to the inside of the room RI, a front wall 3 pointing to the outside of the room RA, as well as a ceiling wall 4. The front wall 3 and the rear wall 2 protrude perpendicularly from the horizontally aligned ceiling wall 4 in cross-section.

By means of a bottom part 5 arranged between the front wall 3 and the rear wall 2, the roller shutter box 1 can be placed on the frame 6 of the window or door and more preferably can be fastened to it. The figure 1 shows the roller shutter box 1 in the seated and fixed configuration. Furthermore, the roller shutter box 1 is closed on both ends of its longitudinal extension by a side part 7 . The latter is preferably in the form of a plastic injection molded part.

The roller shutter box 1 serves to accommodate a roller shutter shaft 8, which carries a roller shutter curtain 9 that can be wound up or unwound—shown only schematically in the drawings.

The shaft axis x extends in the longitudinal direction of the roller shutter box 1, wherein the rotation of the roller shutter shaft 8 permitting mounting of the same in the area of the side parts 7 also takes place.

A slot-shaped outlet opening 10 extending over the entire length of the roller shutter box 1 between the side parts 7 is assigned to the transition region of the bottom part 5 into the front wall 3 in the bottom part 5 . This serves to allow the roller shutter rods 11 of the roller shutter curtain 9 to exit into a guide groove 12 that is vertically aligned when installed. The latter is formed in the roller shutter guide rail 13, which is preferably formed as a plastic extrusion part.

In the installation situation shown, the roller shutter track 13 is preferably aligned in such a way that its inwardly pointing edge 14 is on the facing outer surface 31 of the frame 6 is supported. The edge surface 15 of the roller shutter runner 13 pointing outwards can essentially run in the vertical plane formed by the outer surface of the front wall 3 . The face of the roller shutter rail 13 pointing vertically upwards can come into contact with the facing lower surface of the associated side part 7 or base part 5 in the arrangement and use position, so that the roller shutter slats 11 can enter the guide groove 12 unhindered.

The guide groove 12 also has two flanks which run parallel to one another and are aligned vertically when the roller shutter track 13 is installed, preferably an inner flank 16 on the frame side and an outer front flank 17.

In the area of flanks 16 and 17, as shown in figure 3 mutually facing sealing brushes 18 may be arranged.

Furthermore, an inlet part 19 can be provided in the roller shutter box 1, each associated with a side part 7. Each inlet part 19 forms an inlet shoulder 20 pointing vertically upwards into the interior of the box, for guiding the roller shutter slats 11 sliding off the roller shutter shaft 8 into the guide groove 12 of the roller shutter guide rail 13.

The effective, vertically aligned surface 21 of the inlet shoulder 20 or of the inlet part 19 preferably runs essentially in a vertical plane formed by the flank 16 of the guide groove 12 on the frame side.

The inlet part 19 or the inlet shoulder 20 is preferably formed in one piece, made of the same material as the side part 7 , but in an alternative embodiment it can also be formed as an individual part that can be plugged into the side part 7 .

With regard to the roller shutter track 13, in the installed state shown, for example, figure 1 a longitudinal extension L in the vertical direction.

Furthermore, the roller shutter rail 13 is preferably fixed to the frame 6 via a first form-fitting fastening 22, preferably in the form of a snap-in fastening, with this form-fitting fastening 22 causing a movement of the roller shutter running rail 13 relative to the frame 6 in the longitudinal extension L of the running rail a change in length of the same, for example due to heat radiation, allowed.

The roller shutter running rail 13 has a positive-locking receptacle 23, for example a snap-in receptacle, which opens toward the inwardly pointing edge 14, which is more preferably formed over the entire extent of the running rail in the longitudinal extent L when the roller shutter running rail 13 is designed as a plastic extrusion .

The form-fitting receptacle 23 extends essentially in the plane of the edge 14 - with reference to the usual position of use - i.e. a vertically oriented plane in which the receiving opening 24 is also formed, with receiving flanks on both sides of the receiving flanks preferably running parallel to one another in the cross section according to Figure 3 25, 26 outgoing and facing each other, the slit-shaped receiving opening 24 delimiting Locking webs 27, 28, which can also be referred to as locking walls provided.

Another component of the first positive-locking attachment 22 is a positive-locking projection 29 fixed on the frame side, for example a latching projection, further for example, as is also preferred, in the form of a head or nipple screw provided with a preferably self-tapping thread 30 . A plurality of such form-fitting projections 29 are preferably provided over the length of the roller shutter runner 13, corresponding to an imaginary line in the vertical direction on the frame 6.

Each positive-locking projection 29 can, as is also preferred, sit on the outer surface 31 of the frame 6 facing the roller shutter runner 13 or its edge 14 with a preferably circular-cylindrical support section 32 . On one side, starting from this support section 32 , the section having the thread 30 extends along the central axis y, while opposite the thread 30 there is a form-fitting section 33 which is radially expanded in relation to the support section 32 .

The form-fitting section 33 is provided with a largest outer diameter, which is selected to be larger than the opening dimension of the receiving opening 24 viewed transversely to the longitudinal extent L, so that in the locked form-fitting position according to FIG figure 3 the form-fitting section 33 rests in the groove-like form-fitting receptacle 23 and catches behind the locking webs 27, 28 in a locking manner.

Furthermore, the form-fitting section 33 is provided with both a push-on direction (see arrow a in figure 3 ) of the roller shutter running rail 13 acting on the form-fitting projection 29 insertion bevel 35 and with a counter extraction bevel 34 acting in this attachment direction a, and to enable the elastically resilient opening area between the locking webs 27 and 28 to be snapped on or released without the use of tools.

This first form-fit fastening 22, which, as described, can be provided several times in the vertical direction along the running rail 13, allows a movement of the running rail 13 relative to the frame 6, for example due to a change in length as a result of exposure to heat.

In order to further ensure the stepless and gapless transition from the entry area of the roller shutter box 1 into the guide groove 12 of the roller shutter 13 with this given and desired length variability of the roller shutter 13 relative to the frame 6, a second form-fit fastening 36 is also provided, which in a preferred embodiment the roller shutter -Run rail 13 holds in its face contact position on the facing lower surface of the side part 7. In this case, this second positive-locking fastening 36, like the first positive-locking fastening 22, can preferably be removed without tools and also, more preferably, can be taken in without tools. In particular, the design is such that even if the actual form-fitting partners only manually intervene in the running groove, the roller shutter track 13 can be easily detached from both form-fitting connections without there being any direct action by hand or even with Tool on one of the form-fitting partners themselves requires.

To form the second positive-locking attachment 36, the roller shutter track 13 can, for example, as well as preferred and based on the Figures 1 to 5 illustrated embodiment, in the region of a chamber 37 formed adjacent to but separate from the guide groove 12 preferably have bore-like form-fit receptacles 38 . This can, as is also preferred, be formed in a chamber web 39 running essentially parallel to a flank 16 or 17 of the guide groove 12, more preferably in a chamber web 39 facing the inner peripheral edge 14.

The positive-locking receptacle 38, which acts as a snap-in receptacle, is more preferably provided in the upper end region of the roller shutter runner 13 facing the side part 7 in the normal state of use, more preferably in a region in lateral or horizontal overlap with a horizontally running, vertical upper frame part of the window or the door .

A form-fitting projection 40 connected to the roller shutter box side is provided for form-fitting interaction with the above-described form-fitting receptacle 38 of the second form-fitting attachment 36 . This can, as further preferred, be a locking projection protruding in the manner of a pin or a cap relative to a base, more preferably with a cross-sectional geometry which is essentially adapted to the opening geometry of the positive-locking receptacle 38, so that in the resulting Locking form-fitting position preferably no or possibly only the proper function in the interaction of the roller shutter running rail 13 and the roller shutter curtain 9 running into the guide groove 12 further ensures that there is little play.

As can be seen in particular from the detailed representation in figure 4 as can be seen, the positive-locking projection 40 is also provided, in particular, with a pull-out bevel 51 which interacts with the edge of the bore-like positive-locking receptacle 38 in the course of a release of the second positive-locking fastening 36 . This can result from the outer contour in the case of a further possible convex configuration of the positive-locking projection 40 .

The pull-out slope 51 can also form a pull-in slope in the course of assuming the form-fitting position.

The positive-locking projection 40 is preferably formed on a spring arm 41, more preferably formed in one piece with it and made of the same material. This spring arm 41 dips into the chamber 37 of the roller shutter track 13 for latching, so that the form-locking projection 40 deflecting outwards from the spring arm 41 can spring into the form-locking receptacle 38 . The spring arm 41 loads the form-fitting projection 40 in the direction of the locking form-fitting position, with the form-fitting projection 40 preferably initially sliding along the inside of the chamber web 39 during the course of immersion into the chamber 39, with corresponding resilient yielding of the spring arm 41. This falls when the form-fitting receptacle 38 is reached the form-fitting projection 40 automatically fits into the form-fitting receptacle 38 (compare the dash-dotted representation in figure 2 ).

The spring arm 41 can also be part of a spring clip 42 . With reference to a direction transverse to the longitudinal extension L, this can be designed overall in the form of an O-ring, preferably with a rigid support bracket 43 running in the shape of a circular arc segment, to which an overall resiliently designed area extends, mirrored about a vertical plane with reference to the usual position of use. which area is preferably connected to the support bracket 43 in one piece and of the same material at the end. Overall, the spring clip 42 designed in this way can be designed as a plastic injection-molded part.

The springy area opposite the support bracket 43 is essentially made up of two sections, preferably the above-described spring arm 41 with the form-fitting projection 40 formed thereon and an articulated arm 44 that can be pivoted to a limited extent relative thereto Joint section 45 is connected to the carrying bracket 43 and at the other end to the spring arm 41 via a further joint section 46. In addition, the spring arm 41 is connected via a third joint section 47 to a base section 48 which also holds the carrying bracket 43 (compare in particular the illustration in figure 4 ).

The extent of the spring clip 42 designed in this way transversely and perpendicularly to the longitudinal extent L of the running rail 13 in the usage position is essentially adapted to the clear extent of the chamber 37.

The spring clip 42 can be formed in one piece and of the same material with the inlet part 19 and/or with the side part 7 via the base section 48 . In this regard, a preferably non-detachable snap-in mount can alternatively be provided, such as that shown, for example, in figure 2 is shown schematically. Thus, on the base section 48 there can be provided a resilient locking section 49 which can be fixed in a locking manner in a chamber-like opening 50 , for example in the side part 7 .

As a result of the configuration described above, the roller shutter track 13 can be fixed without tools in a manner that is favorable in terms of handling both in the area of the first positive-locking attachment 22 and in the area of the second positive-locking attachment 36 , and can also be released without tools by removing the above-described positive-locking attachments become. For example, to loosen the roller shutter runner 13, it is sufficient to act on it, if necessary in a region of the runner rail 13 that is remote from the second form-fitting fastening 36, for example at the bottom, further, for example, as a result of pivoting and the associated cancellation of the first form-fitting fastening 22 and at the same time or subsequent removal of the roller shutter track 13 essentially vertically downwards against a direction b of the second form-fit fastening 36 directed essentially perpendicularly to the direction a of the first form-fit fastening 22 (cf figure 5 ).

With a corresponding action on the running rail 13 to release the same, the respective extraction bevel 34, 51 is acted on via the form-fitting receptacle 23 or 38 in such a way that the corresponding form-fitting projection 29 or 38 is displaced from the form-fitting receptacle into a position that cancels the respective form-fitting position, this in particular with regard to the second form-fitting fastening 36 with the spring arm 41 carrying the form-fitting projection 40 being resiliently moved back.

With such a deflection of the spring arm 41, in particular, it is pivoted about the third articulated section 47 connected to the base section 48 and, via the second articulated section 46, a pivoting displacement of the articulated arm 44 is also achieved.

The resilient restoring force for aligning in particular the spring arm 41 with its form-fitting projection 40 in the basic position that preferably corresponds to the form-fitting position according to FIG figure 4 can, as further preferred, result from the elastically restorable joint sections 45 and/or 46 and/or 47.

Conversely, the roller shutter rail 13 can also be attached both to the frame 6 and to the roller shutter box 1, in particular as a result of the vertically upper end of the rail 13 being slipped over the spring clip 42, so that it dips into the chamber 37 and in the course the slip-on movement in slip-on direction b assumes the positive-locking position, while at the same time or finally a slip-on movement transversely thereto in slip-on direction a creates a positive-locking connection between the groove-like positive-locking receptacle 23 and the screw heads or positive-locking projections 29.

The figure 6 shows a second embodiment for forming the second form-fit fastening 36.

The positive-locking projection 40 is formed on a spring arm 41 of a spring clip 42, as described above with reference to the first exemplary embodiment. This spring clip 42 is also designed as a separate part here, but is held in place on the running rail 13 in contrast to the first embodiment. For this purpose, the latching sections 49 engage in openings 50 in the region of the chamber 37 on the running rail side.

In the form-fitting position, the area of the spring arm 41 that carries the form-fitting projection 40 protrudes into the area of the outlet opening 10 of the roller shutter box 1, with the form-fitting projection 40 engaging in a bore-like form-fitting receptacle 38 provided there in a latching manner.

Also, according to a further embodiment according to figure 7 the spring clip 42 has a plate-like base 52 in the region of its support bracket 43, via which a fastening, for example screw fixing, of the spring clip 42 on the surface of the window frame facing the running rail 13 6 can be provided. In the assignment position, the spring arm 41 protrudes into the area of the form-fit receptacle 23 of the first form-fit fastening 22 .

In the receiving base 53 that results between the receiving flanks 25 and 26 , a bore-like positive-locking receptacle 38 is provided for latching interaction with the positive-locking projection 40 of the second positive-locking fastening 36 .

Also, without the formation of such a bore-like form-fit receptacle 38 , the running rail 13 can be secured against slipping down solely by the spring loading on the receptacle base 53 by the spring clip 42 or by the spring arm 41 .

As a further alternative, the form-fitting projection 40 of the second form-fitting attachment 36 can be formed by a blocking part 54, which is fastened between the receiving flanks 25 and 26 and/or on the receiving base 53 of the groove-like form-fitting receptacle 23, for example is adhesively fastened (cf figure 8 ). In the form-fitting position, the blocking part 54 sits on top of the form-fitting projection 29 of the first form-fitting fastening 22 and thus prevents the running rail 13 from slipping off.

The form-fitting projection 29 of the first form-fitting attachment 22 accordingly forms the form-fitting receptacle 38 of the second form-fitting attachment at the same time. <b><u>List of reference symbols</u></b> 1 roller shutter box 29 form-fitting projection 2 back panel 30 thread 3 front wall 31 outer surface 4 ceiling wall 32 support section 5 bottom part 33 form fit section 6 Frame 34 draft 7 side panel 35 draft 8th shutter shaft 36 second form-fit fastening 9 shutter armor 10 exhaust port 37 chamber 11 roller shutter rod 38 Form-fit recording 12 guide groove 39 chamber bar 13 Roller shutter track 40 form-fitting projection 14 border edge 41 spring arm 15 border edge 42 spring clip 16 flank 43 carrying handle 17 flank 44 articulated arm 18 seal brush 45 joint section 19 inlet part 46 joint section 20 entry shoulder 47 joint section 21 Surface 48 base section 22 first form-fit fastening 49 rest section 23 Form-fit recording 50 opening 24 receiving opening 51 draft 25 recording edge 52 Base 26 recording edge 53 recording floor 27 rest bar 54 blocking part 28 rest bar a mounting direction b mounting direction x shaft axis y central axis L longitudinal extent RI room inside RA room exterior

Claims (11)

1. Method for fastening a roller shutter guide rail (13) relative to a roller shutter box (1) and a window or door frame (6), wherein the roller shutter guide rail (13) is locked to a support fixed to the building for a first mounting which can be displaced in the direction of a longitudinal extension (L) of the roller shutter guide rail (13) in order to accommodate a change in length, preferably a window frame (6), characterised in that the roller shutter guide rail (13) is additionally connected in a reversible manner to the roller shutter box (1) or the window frame (6) in a form-locking manner in order to prevent a displacement of the roller shutter running rail (13) in the direction of the longitudinal extension (L).
2. A roller shutter guide rail (13) positively fixed to a window with a window frame (6) and associated with a roller shutter box (1) by means of a positive-locking projection (29) and a positive-locking receiver (23), a first positive-locking fastening (22) on the window frame (6) permitting movement by a change in length of the roller shutter running rail (13) relative to the window frame (6) in a longitudinal direction (L) of the roller shutter running rail (13), characterised in that the roller shutter running rail (13) is fastened reversibly at the same time by a second positive-locking fastening (36) on the roller shutter box (1) or the window frame (6), in that the positive-locking projection (40) of the second positive-locking fastening (36) prevents a movement of the roller shutter running rail (13) in the longitudinal direction (L) by bearing against a stop aligned transversely with respect to the longitudinal extent (L), and in that the positive-locking projections (29, 40) or positive-locking receptacles (23, 38) are designed in such a way that both the first and the second positive-locking fastening (22, 36) allow the roller shutter running rail (13) to be released from the first and second positive-locking fastening (22, 36) without acting on a positive-locking projection (29, 40) or a positive-locking receptacle (23, 38) itself.
3. Roller shutter guide rail according to claim 2, characterised in that the positive-locking projection (29, 40) and/or the positive-locking receptacle (23, 38) has a pull-out slope (34, 51) which enables the positive-locking fastening (22, 36) to be released by the action of a force on the roller shutter guide rail (13) even at a distance from the positive-locking fastening (22, 36).
4. Roller shutter guide rail according to one of claims 2 or 3, characterised in that the first positive connection (22) is achieved by engagement of a positive-engagement projection (29) in a positive-locking receptacle (23) which is longer in comparison in the direction of the longitudinal extension (L).
5. Roller shutter guide rail according to one of claims 2 to 4, characterised in that the second positive-locking fastening (36) is achieved by engagement of a positive-locking projection (40) in a locking receptacle (38) limited to a dimension of the positive-locking projection (40) in the direction of the longitudinal extension (L).
6. Roller shutter guide rail according to any one of claims 2 to 5, characterised in that the positive-locking projection (40) of the second positive-locking fastening (36) is formed on a spring arm (41).
7. Roller shutter guide rail according to claim 6, characterised in that the spring arm (41) is formed on or attached to a side or bottom part (7, 5) of the roller shutter box (1).
8. Roller shutter guide rail according to claim 6, characterised in that the spring arm (41) is formed on or attached to the guide rail (13).
9. Roller shutter guide rail according to claim 6, characterised in that the spring arm (41) is fixed to the window frame (6).
10. Roller shutter guide rail according to claim 6, characterised in that the spring arm (41) is formed on or attached to an inlet part (19) of the roller shutter box (1).
11. Roller shutter guide rail according to one of claims 6 to 10, characterised in that the spring arm (41) is part of a spring bracket (42).

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