WO2009141233A2

WO2009141233A2 - Frame system for a screen

Info

Publication number: WO2009141233A2
Application number: PCT/EP2009/055521
Authority: WO
Original assignee: Tesa Se
Priority date: 2008-05-23
Filing date: 2009-05-07
Publication date: 2009-11-26
Also published as: DE112009001178A5; DE202008006983U1; WO2009141233A3

Abstract

The invention relates to a frame system for a screen that can be mounted on a window frame (2), in particular the trim frame of a window, comprising at least two lateral, one upper and one lower strut (6, 7, 8, 9), said struts (6, 7, 8, 9) when mounted forming a frame for the screen. The invention is characterised in that the struts (6, 7, 8, 9) have detent devices (10) and can be interlocked by means of said devices, to form the rectangular frame when mounted.

Description

description

Frame system of a shield

The present invention relates to a frame system of a shield for mounting on a window frame according to the preamble of claim 1, a fastening clip according to the preamble of claim 45 for drill-free attachment of a frame system to a window frame and a guide member according to the preamble of claim 51.

Various types of frame systems for mounting a shield on a window or door frame are known in the prior art. In the present case, such a shield means any shielding of a building opening. Examples of such shields are insect / particle guards as well as sun and privacy systems. These shields usually have a protective fabric in the form of an insect or particle protection grid or a protective fabric. In the present case, correspondingly suitable knitted fabrics, knitted fabrics, metal meshes, etc. are also referred to as protective fabrics. The respective protective fabric is usually clamped in a frame, which in turn is arranged in or in front of an opening of a room to be protected, for example in front of windows or doors. In the following, the terms "window" and "window frame" are used here as uniform designations, even if they are doors and door frames. Such a frame of a protection system may be fixed or pivotally mounted on a window frame.

US 6,666,251 B2, which forms the starting point of the present invention, shows a frame system of a sunshade system for mounting in a window frame. The frame system consists of several struts that connected together and fixed in the window frame. Two lateral, left and right arranged in the window frame struts form a guide for a mounted above between the two side struts roller blind. As a roller blind, here and hereinafter a protection fabric wound up on an axis is referred to, which can be unwound from the axis to shield the window opening. At the lower end of the protective fabric, a handle rail is arranged, which serves to pull the protective fabric. The handle rail engages laterally in the struts and is guided therein.

The assembly of this frame system is relatively expensive, since particular attention must be paid to a parallel alignment of the two opposite braces. In addition, the insertion of the roller blind, in particular the axis of the protective fabric and the handle rail, requires a certain skill in order to ensure a smooth functionality.

The present invention is therefore based on the problem to provide a versatile frame system that allows easy installation and operation.

A first teaching of the invention relates to the frame system with the features of the preamble of claim 1, which is then characterized by the features of the characterizing part of claim 1. The formation of the struts with locking devices allows complete construction of the frame system before attachment to the window frame. As a result, a parallel mounting of the struts can be easily ensured, so that the functionality of the protection system is not affected by an inaccurate positioning of the struts. Alternatively, the structure of the frame but also gradually in or on the window frame itself done by first a strut and then strut for bracing is used. By locking the correct orientation of the struts is guaranteed to each other in this case. This is particularly advantageous in an embodiment of the frame system, which allows mounting on the window frame of a window. The window frame of a window is usually aligned plane-parallel, so that the assembly of the alignment of the frame system simplified. A well-aligned frame system is also required to allow the best possible and tight closure with the window. In particular, in the frame of an insect / particle protection grid should therefore remain no gaps between the frame system and window frames through which insects could penetrate.

Preferred embodiments and further developments are the subject of the dependent claims.

Of particular importance is the design of the frame system according to claim 2. It is provided that each strut has at least one end cap, which forms a latching device of the respective strut. Characterized in that the brace is thus not formed in one piece, but the locking device on the strut in the rest in the form of an end cap is pushed, it is possible to change the length of the strut. In particular, the struts can be adapted to the size of the respective window frame by appropriate cutting. The appropriately shortened strut is then provided with the end cap and can be used to build a frame of individual size. Moreover, it is particularly advantageous in this case if the arrangement of the end cap on the strut otherwise allows a certain tolerance compensation to compensate for a waste when cutting the strut. A corresponding tolerance compensation can be provided, for example, in that the end cap is designed to be longer than absolutely necessary, so that it can be inserted with different lengths in or on the strut. In addition, locking lugs and / or projections may be provided on the end cap, which support a tight fit of the end cap on or in the strut. A tolerance compensation can also be provided in that the latching device of an end cap has a plurality of latching steps. The locking with a further bracing can thus be done in different positions. A second brace or its end cap is then inserted only as far as necessary in the first strut or the end cap during assembly, which also can be done a certain tolerance compensation. Essential for this are several locking steps within the locking device of End caps. Tolerance compensation by the end caps can basically be done both in the direction of the longitudinal extent of a strut, but also across it. The tolerance compensation can be achieved by additional locking steps, but also by a displaceability transverse to the locking device.

Special and independent meaning also comes to the frame system according to claim 8. The braces of conventional frame systems are usually made of metal to withstand the loads encountered during use. Surprisingly, it was recognized that, however, plastic embodiments can withstand the stresses. This relates in particular to the particular profile shape of the struts, as described in claims 4, 10 ff, 12 ff.

In particular, the plastics mentioned in claim 9 are suitable for the production of the struts. These plastics, which are also known under the trade name LURAN by BASF, enable a high resistance to weathering and heat distortion. In addition, these materials are also suitable for profile extrusion, thus enabling the simplest possible production of the struts. Another advantage is the relatively low density, which is about 30% lower compared to PVC, for example, so that the lightest possible overall system can be achieved.

Preferred is an embodiment of the frame system in which the struts are made in total from one of the plastics mentioned in claim 8. Alternatively, however, it is also possible to provide a coating with such a plastic. The inner material may be, for example, a cheaper plastic, which is then coated accordingly. The durability of the bracing is ensured by the outer coating. The outer coating can be done by applying the aforementioned plastics as a laminate or by coextrusion.

Further independent meaning also comes to the claims 10 ff. Here is described an embodiment in which the frame system for receiving a Roller blinds is formed. Such a roller blind system makes special demands on the frame system, in particular with regard to the occurring load and guidance and fastening of the protective fabric.

Next is also the attachment of the frame system itself to the window frame independent significance. The special embodiment of the frame system required for this purpose is described in claims 12 ff. And 16 and the embodiment of the fastening clip in claims 45 ff. The design described there allows a drillless attachment of the frame system to the window frame. If desired, however, can also be made in this system additional holes for screwing the frame system to the window frame.

Special and independent significance also comes to the frame system designed as a roller blind system according to claims 17 et seq. These describe particularly expedient embodiments of a frame system with various independent aspects, such as the setting of a bias of the roller blind system (claims 17 et seq.), The lateral completion and assembly of the roller blind in a frame system (claims 28 et seq.), The design of the roller blind cassette ( Claims 32 et seq.) And a braking device for the protective fabric (claims 39 et seq.). Another aspect relates to the configuration of a guide element for use in a frame system designed as a roller blind system, in particular for guiding the handle rail (claims 51 ff).

Hereinafter, the frame system according to the invention in all its variants together with individual components and preferred uses is explained in more detail using a purely exemplary embodiments illustrative drawing.

In the explanation of the embodiments with reference to the drawing and also all the advantages and effects of various features of the frame system according to the invention are explained in detail. In the drawing shows

1 shows an insect / particle protection system mounted on a window frame, Fig. 2 shows a perspective view of the latching of two struts, 3 shows a strut of the frame system of Fig. 1 in cross section,

4 is a perspective view of a first end cap of

Strut of Fig. 3, Fig. 5 is a perspective view of a second end cap of

Strut of Fig. 3,

6 shows the cross section of another strut of the frame system, FIG. 7 is a perspective view of an end cap of

Strut of Fig. 6, Fig. 8 shows a third strut of the frame system in perspective

Presentation,

9 shows a first end cap of the bracing of FIG. 8, FIG. 10 shows a second end cap of the brace of FIG. 8, FIG. 1 shows the roller blind axis of a roller blind system in perspective view, FIG. 12 shows a perspective view of a guide element for the

Grab rail,

Fig. 13 shows examples of a T-shaped structure, Fig. 14 is a perspective view of a mounting clamp for

FIG. 15 shows a first element of the fastening clamp from FIG. 13, FIG. 16 shows a second element of the fastening clip from FIG. 13, FIG. 17 shows an alternative mounting clamp in perspective view, FIG. 18 shows the adjusting axis of a roller blind system 19 shows a detail of the roller blind system in a perspective view with mounted adjusting axle, FIG.

19, FIG. 22 shows the cross-section of the handle rail of a roller blind system, FIG Fig. 25 shows a securing cap for the guide element, Fig. 26 shows examples of a T-shaped structure.

Fig. 1 shows an insect / particle protection system 1 as a shielding of a space from insects and particles such as pollen, which is attached to a window frame 2. The insect / particle protection system 1 has a roller blind 4 in addition to a frame system 3. The roller blind 4 in turn has a protective fabric 5, with which the opening of the window is closed. Alternatively, such a protection system 1 with slight modifications, in particular with regard to the protective fabric 5, also for protection against direct sunlight, for the darkening of a room or used as a visual screen.

The frame system 3 has present two lateral struts 6, 7, an upper strut 8 and a lower strut 9. These braces 6, 7, 8, 9 form in the case of assembly, that is, when they are connected to each other, a rectangular frame for guiding and securing the protective fabric 5 from. Optionally, additional struts can be provided, for example, a further upper strut and / or a central cross brace. Such additional braces are particularly advantageous for large windows to increase the strength of the frame system 3 as a whole.

The struts 6, 7, 8, 9 each have locking devices 10 by means of which they are latched together. The latching of the lower strut 10 with the right strut 7 is shown by way of example for the further latchings in FIG. By locking together the struts 6, 7, 8, 9 form the frame of the insect protection system 1.

Fig. 3 shows the mounted on the right side of the window frame 2 lateral brace 7 in cross section. In the following, further details are explained by way of example on this brace 7. These relate in a similar manner but also the other struts 6, 8, 9, unless deviating configurations are shown or described.

The strut 7 has a first planar side surface 7a (in the image on the right) and a second planar side surface 7b. In the assembled state, the strut 7 faces the wall with its first planar side surface 7a and the window frame 2 with the second planar side surface 7b. It is clear from the cross-sectional illustration of the strut 7 (FIG. 3) that the strut 7 is designed as a hollow profile. Here and preferably, the Strut 7 not only one but a plurality of hollow chambers 7 c on. A design of the strut 7 as a hollow profile is particularly advantageous because a hollow profile on the one hand applies a high strength, but on the other hand is much easier compared to a solid profile. In particular, therefore, all struts 6, 7, 8, 9 are formed as a hollow profile.

4, 5 show an upper end cap 1 1 (FIG. 4) and a lower end cap 12 (FIG. 5) of the strut 7 in a perspective view. The two end caps 1 1, 12 are designed such that they are present partially inserted into the hollow profile of the strut 7 and fixed there by a press connection. Here and preferably, the end caps 1 1, 12 two (Fig. 5) and three (Fig. 4) projections 12a, 12b and 1 1a, 11 b, 1 1c are pushed into the hollow chambers 7a. The projections 1 1a, 1 1 b, 11 c; 12a, 12b are preferably conical, with their cross section being slightly larger at the wider end than the inner cross section of the corresponding hollow chamber 7a. In this case, the circumference over the course of the projections 11 a, 1 1 b, 11 c; 12a, 12b beginning at the end in the direction of the locking device 10 too. In addition, the projections 1 1a, 1 1 b, 1 1c; 12a, 12b here and preferably also designed as a hollow profile. The hollow profile allows a certain compressibility of the projections 11 a, 1 1 b, 1 1c; 12a, 12b, whereby they can be pushed into the brace 7 as far as required, depending on requirements, and yet are adequately fixed there by a press fit. This creates the possibility of tolerance compensation in order to be able to compensate for cuts when the strut 7 is cut to length.

Alternatively, such end caps can also be pushed onto a strut and / or bolted to it, for example. The attachment of an end cap on a strut can advantageously also be effected by means of a latching connection. In particular, however, a connection of the end cap with the respective bracing is provided so that a tolerance compensation is possible to compensate for errors when cutting to length. It is sufficient that a tolerance compensation on one side of the strut, in this case the top or bottom, is given. Preferably, however, the tolerance compensation is possible on both sides, as this also larger errors can be compensated. The tolerance compensation can alternatively or additionally but also be realized in the latching of the struts with each other. Also, a tolerance compensation can be provided in the direction transverse to the longitudinal extent of the struts.

The end caps 1 1, 12 each have a locking device 10 for locking de respective struts 7, 8; 7, 9 together. In the present case, the strut 7 thus the locking devices 10 exclusively in the form of the end caps 1 1, 12. This also applies to the struts 6, 8, 9 even if in principle other possibilities for forming the locking devices 10 are conceivable. However, the design of the locking devices 10 by end caps 1 1, 12 is particularly advantageous in terms of the simplest possible production, since thus the strut 7 can be formed as an extrusion profile or extruded profile. The formation of locking devices 10 is usually more expensive and is therefore decoupled from the profile production here. The end caps 11, 12 can be injection molded, for example. The design of the locking devices 10 by end caps 11, 12 also has the advantage that the strut 7 can be shortened to a desired length and thus flexible for a variety of window frame sizes can be used.

Fig. 6 shows the lower strut 9 in cross section. This brace 9 is also designed as a hollow profile and is closed on its sides by end caps 14 (FIG. 7). The end caps 14 in turn provide the locking devices 10 for locking with the other struts, in this case the struts 6, 7, ready. Fig. 6 can also be seen that the strut 9 has a hook extension 13 extending over its longitudinal extension. This Hakenausformung 13 is particularly advantageous to allow a blind system, a locking of the protective fabric 5 in the closed position, so when the protective fabric 5 is pulled in front of the window opening. In the present case, the protective fabric 5 is locked in the closed position by means of its grip rail 43 (see above).

As already stated above, FIG. 2 shows by way of example how the locking of the struts 7, 9 takes place with one another. The strut 7 is here already cut to the desired length and attached to the window frame 2. At her in Fig. 2 lower end, the strut 7, the end cap 12. The strut 9 is also cut to length as desired and provided at its end with the end cap 14. For mounting the locking device 10 of the end cap 14 is now inserted into the locking device 10 of the end cap 12, whereby a releasable but secure locking of the two struts is achieved with each other.

Fig. 8 shows the upper strut 8 of the frame system 3, which is presently designed as a roller blind cassette. As Rollokassette a profile is referred to here, which is designed to receive a wound protective fabric 5. This brace 8 is also closed laterally by end caps 15, 16 (FIGS. 9, 10). The end caps 15, 16 have, in addition to a latching device 10 (not shown) in each case a bearing pin 17 for supporting a roller blind axle 18 (FIG. 11). For this purpose, the roller blind axle 18 is pushed onto the bearing pins 17 and is thus mounted rotatably on this. Alternatively, for example, a storage of the roller blind axis 18 within the bearing pins 17 would be conceivable.

In the event that the insect protection system 1 is designed as a roller blind system, guidance of the protective fabric 5 in the direction of movement is desirable. For this purpose, the struts 6, 7 arranged in the assembled state along the direction of movement of the protective fabric 5 have a guide slot 19 in the longitudinal direction for receiving and guiding the protective fabric 5 (FIG. 3). In the present case, the two struts 6, 7 are the side struts, but alternatively, for example, the upper and the lower struts may be designed accordingly if the protective fabric 5 is not displaceable vertically to the window opening, but horizontally to the window opening.

The guide slot 19 of the struts 6, 7 is tapered in cross-section starting from the opening (FIG. 3). Due to the initially wide opening the insertion of the protective fabric 5 in the guide slot 19 is easy to carry out. However, a wide opening has the disadvantage that even insects would come through the protective fabric 5 by this. Due to the tapered shape However, this can be prevented, even if the protective fabric 5 does not extend to the end of the guide slot 19 in this.

Here and preferably it is provided that the struts 6, 7, 8, 9 of the frame system 3 are made of plastic. It has been shown that contrary to previous assumptions braces made of plastics are quite able to withstand the loads occurring permanently. This applies not only to relatively simple frame systems but in particular also to complex frame systems which are designed as roller blind systems and are therefore subject to higher loads.

Particularly suitable plastics are styrene / acrylonitrile copolymer plastics, in particular acrylonitrile-styrene-acrylate plastics. Such plastics are also known under the trade name LURAN BASF. Such plastics offer high weather resistance and high heat distortion resistance, so that deformation under load can be avoided even in sunlight. In a particularly preferred embodiment, the struts are made entirely from the aforementioned plastics. Alternatively, however, it is also possible to produce the inner of the struts of other materials, in particular other plastics such as PVC, and to coat only with the aforementioned plastics. The coating can be carried out, for example, by applying a laminate or already during production by coextrusion.

As already described, the upper strut 8 of the frame system 3 is presently designed as a roller blind cassette. In order to ensure a secure guidance of the protective fabric 5 in such a frame system 3, it is provided that at least one bracing 6, 7 arranged perpendicularly to the roller blind cassette 8 has a form-locking means 20 extending in the longitudinal direction for guiding the protective fabric 5. In the present case, the two lateral struts 6, 7 have such a positive locking means 20 (FIG. 3). The interlocking means 20 is designed in such a way that a guide element 21 (FIG. 12) connected to the protective fabric 5 positively engages in the interlocking means 20 and along the direction of movement of the protective fabric 5 is displaceable. It is particularly preferred that the positive-locking means 20 also provide a guide surface 22 for the guide element 21. The connection of the guide element 21 with the protective fabric 5 can be done for example via a handle rail (43) of the protective fabric 5 (see below).

In the present case, the interlocking means 20 of the brace 7 is designed as a substantially T-shaped structure, that is to say it has a broad front area and a narrower or narrower area arranged behind it. In the present case, the term "T-shaped structure" is also used when the wide front region is not flat but, for example, arched, only in the core the T structure must be recognizable. FIG. 13 shows examples of configurations which are referred to as a T-shaped structure in the present case. The T-shaped structure extends over the entire length of the struts 6, 7 and forms the guide surface 22. By the T-structure also a positive engagement behind the guide surface 22 is made possible by the guide member 21.

Another independent aspect of the frame system 3 is that at least two struts 6, 7 each have a longitudinally extending positive locking means 23 in which a fastening clip 24 can be arranged positively in two spatial directions and along the third spatial direction, namely the longitudinal direction of the respective strut 6, 7, is displaceable. The form-fitting means 23 thus serves to receive a fastening clamp 24 (FIG. 13) for mounting the frame system 3 to the window frame 2. With a suitable embodiment of the fastening clamp 24, this type of installation allows drill-free mounting of the frame system 3 on the window frame 2 the frame system 3 and the mounting clamp 24 allows mounting on the frame of a window. This is particularly advantageous in terms of a good seal, since the window frame of a window is designed even for aesthetic reasons usually flat. If now the frame system 3 itself flat and straight running formed and can be arranged directly on the frame, remains between the frame and frame system 3 in general no gap through which insects or particles can pass through, so that a very good seal can be achieved. Characterized in that the fastening clamp 24 is displaceable along the positive locking means 23, the positioning of the fastening clip 24 can be made flexible. In particular, a plurality of mounting clamps 24 should be used for fastening a brace to ensure the best possible support.

If only two of the struts have the longitudinally extending positive locking means 23, it is advantageous for a uniform force transmission that these two struts are arranged opposite each other in the mounting case. In the present case this is realized by the struts 6, 7.

Also, the positive locking means 23 is formed here and in a preferred embodiment as a substantially T-shaped structure. This T-shaped structure has a longitudinally extending guide surface 25, which allows a Hintergreifung by the mounting clamp 24. The guide surface 25 serves to guide the mounting clamp 24 in its longitudinal displacement and thus to make the shift as simple as possible. With regard to the term T-shaped structure, the previously stated applies here as well (see Fig. 13).

Fig. 3 also shows an embodiment in which the strut 7 has two lateral guide collar 26, 27. These two guide collars 26, 27 each extend parallel to the left and right adjacent to the T-shaped structure in the longitudinal direction of the brace 7. They thus form a further lateral guide for the mounting clamp 24. In addition, the guide collar 26, 27 cover the mounting clamp 24 side, so that the viewer sees a flat surface. The lateral guide collar 26, 27 thus also serve an attractive appearance of the frame system 3.

In particular, it is provided that the minimum distance between the T-shaped structure and the respective guide collar 26, 27 substantially corresponds to the thickness of the mounting clamp 24 in this area, so that on this page a positive connection between the guide collar 26, 27 and mounting clamp 24 is achieved , 3 further shows an embodiment in which the strut 7 has both a positive locking means 20 for guiding the protective fabric 5 and a positive locking means 23 for the fastening clamp 24. In this case, the two form-fitting means 20, 23 are arranged offset from each other by substantially 90 °, which is particularly advantageous for an optimal arrangement and operability of the frame system 3. The design of the strut with two positive locking means 20, 23 is also particularly advantageous in order to achieve a good distribution of force. The interlocking means 23 serves for mounting the frame system 3 on the window frame 2 and thus secures the struts 6, 7 itself. The interlocking means 20, however, serves to guide and secure the protective fabric 5 and thus leads to a load on the struts 6, 7 itself. This load However, can be passed directly into the window frame 2 and recorded there, so that the strut 6, 7 can withstand even the burden easily. This power distribution is then optimal again to allow the use of plastic braces.

FIGS. 14-16 show the fastening clamp 24 for drilling-free attachment of the frame system 3 to a window frame 2, in particular a frame, or their individual parts. The clamp 24 has two mutually displaceably mounted elements 28, 29. These two elements 28, 29 are detachably connected to each other, in this case by means of a screw 30. Upon rotation of the screw 30 engages the thread in an internal thread of one of the two elements 28, 29, here the element 28, and thus leads to a relative movement of the two elements 28, 29 against each other. By this displacement against each other, a clamping force for clamping the mounting clamp 24 is provided on a window frame 2.

It is further provided that one of the elements 28, 29, in this case the element 28 (FIG. 15) -guide element-is designed as a profile body with a cross-section open on one side for positive engagement in the positive-locking means 23 of a strut 6, 7. In the present case, the unilaterally open cross-section is a C-structure, which forms the counterpart to the T-structure of the strut. The term C-structure is used herein to mean a structure the basic shape of a C (square or round) understood, which is also angled at their ends, so as to allow a positive connection.

The element 29 (Fig. 16) - clamping element - however, has an angled leg 31. This leg 31 forms in the case of assembly, so when the two elements 28, 29 are connected to each other, together with the guide member 28 is a one-sided open cross-sectional profile. By relative movement of the two elements 28, 29 to each other then the width of this cross-sectional profile is changed, whereby the clamping can be done on the window frame 2.

In the case of the present fastening clip 24, it is additionally provided that one of the elements 28, 29 in the present case, the clamping element 29, is designed to be interchangeable. Since the displacement of the mounting clamp 24 is limited, but there are a variety of different widths in window frame 2, by replacing one of the elements 28, 29 a certain flexibility in terms of adaptation to the window frame width can be achieved. In particular, it is provided for this purpose that the elements to be exchanged in one area differ with respect to their length. In particular, this is the area X of the clamping element 29 in front of the angled leg 31 (FIGS. 14, 16). In this respect, a fastening clamp set is preferably offered that contains a single element, in particular the clamping element 29, but several times with mutually different lengths.

Since the mounting clamp 24 has to absorb relatively high forces, this is preferably made of metal. Accordingly, the two elements 28, 29 are made in a preferred embodiment of metal.

17 shows an alternative embodiment of a fastening clip 24 with the two elements 28, 29. The essential difference from the fastening clip described above is that the two elements 28, 29 are mirror-symmetrical with respect to their respective longitudinal axis. This is especially advantageous with regard to a uniform distribution of force.

Alternatively or in addition to the attachment of the struts of the frame system 3 to the window frame 2 by means of fastening clamps 24th The struts themselves can also support the mounting on the window frame 2. In a further embodiment (not shown) for this purpose have at least two of the struts on a structure which allows a Hintergreifung of the window frame 2, in particular of the frame. This structure have at least two braces opposite each other in the case of installation, in order to enable a good distribution of force and thus safe installation. By the Hintergreifung of the window frame 2, the struts are secured against tilting out of the window level addition. A backup against tilting in the window plane is preferably ensured by the connection, in particular latching with the other struts of the frame system. In addition, the struts can then be attached to the window frame 2, for example, by screwing, mounting clips or the like. The structure for Hintergreifung, in cross-section in particular a C or U-structure, may extend over the entire length of the respective strut, but it may also only partially, preferably in at least three spaced-apart areas, be provided.

A further independent aspect concerns a frame system 3 designed as a roller blind system with a roller blind cassette 8, a roller blind axle 18 and a protective fabric 5, in which the protective cloth 5 is wound onto the roller blind axle 18. The roller blind axle 18 is rotatably mounted in the roller blind cassette 8, for example by the end caps 14, as previously described. Furthermore, the roller blind axis 18 is biased in the winding direction. The bias voltage is realized in a preferred embodiment by means of a spring 32 which is mounted on a control axis 33 in the present case. The adjusting axis is shown in Fig. 18 in perspective view without the spring 32. The bias serves to wind the protective fabric 5 autonomously after a single operation and thus to release the window opening again. It is now provided that the bias is adjustable by the user himself. By this setting, the winding speed of the protective fabric 5 can then be set in the desired manner.

In principle, the roller blind can be designed such that the pretension can be adjusted continuously. In the present case, the adjustment of the bias occurs however gradually. In the present case, a gear arrangement 34 is provided, through which the stepwise adjustment of the pretension takes place (FIG. 21). The gear arrangement 34 has an adjusting wheel 35 which is in operative connection with the roller blind axle 18. By rotation of the adjusting wheel 35 in one direction, the bias voltage is increased, lowered by pressing a button 36. The actuation of the adjusting wheel 35 to increase the bias voltage is presently provided manually. So that the setting wheel 35 can be reached manually, the end cap 14 has a corresponding recess 37 (FIG. 19).

The setting wheel 35 is arranged at the end of the adjusting axle 33 (FIG. 18), which is inserted into the roller blind axle 18 and is supported by two end-side driving cams 38 (FIGS. 19, 20). To secure against lateral displacement, the adjusting axis 33 has a Verklipsung 39. On this adjusting axis 33, the spring 32, which applies the biasing force, arranged. In the present case, the spring 32 is a spiral spring, each with a leg 32 a, b at its end. The spring 32 is fixedly mounted with its first end 32a relative to the roller blind axis 18, in the present case namely rigidly connected to a driving cam 38 (FIG. 19), which in turn is rigidly connected to the roller axle 18. With its second end 32b, the spring 32 is movable relative to the roller blind axis 18, in the present case rotatable, mounted. For this purpose, the spring 32 is arranged with this end 32b in the Verklipsung 39 of the adjusting axis 33. With its second end 32b, the spring 32 is thus mounted stationary relative to the setting wheel 35. Due to the stationary mounting relative to the setting wheel 35 on the one hand and the rotatable mounting to the roller blind axis 18 on the other hand, the bias of the roller blind axis 18 is varied upon actuation of the setting wheel 35.

The setting wheel 35 is operatively connected to a pawl 40 (FIG. 21) which is pivotably mounted about a pivot axis 41. The pawl 40 is pivotable from a blocking position (shown in FIG. 21) into a release position and back. In the locked position, the pawl 40 blocks the thumbwheel 35 such that the roll axis 18 is kept biased and can not relax automatically. However, a rotation of the adjusting wheel 35 to increase the bias remains possible. In such a rotation, the pawl 40 is pivoted from its locked position to the release position. The pawl 40 is biased in its blocking position, so that immediately after increasing the bias of the Roller blind axle 18 pivots back one step into the blocking position. The pivotal mounting of the pawl 40 takes place here and preferably also in the end cap 14th

The pawl 40 is also pivoted by pressing the button 36 from the locked position to the release position, whereby the lowering of the bias voltage is performed by one stage. The operation of the button 36 takes place here by pulling down. In this movement, the button 36 takes the pawl 40 with by pivoting it from its blocking position to the release position. After pressing the button, the pawl 40 returns due to their bias back into their locked position. The bias of the pawl 40 may be applied by an additional spring is present and preferably applied by a spring action of the probe 36. For this purpose, the button 36 is made of a plastic, on the one hand allows deformation of the probe 36 during actuation and on the other hand has an elasticity, which provides a sufficient restoring force. In addition, the button 36 is shaped so that it takes the pawl 40 in the return to its locked position. In particular, the push-button 36 has the catch 36a for this purpose (FIG. 21).

As already described, the roller blind cassette 8 is formed in a preferred embodiment as a hollow profile. In addition, the roller blind cassette 8, as well as the struts 6, 7 on a form-fitting means 23 for fixing the roller blind cassette 8 on the window frame 2. For the exact configuration of the positive locking means 23, reference is made to the corresponding previous description.

The roller blind cassette 8 has in its longitudinal direction a passage opening 42 for the protective fabric 5 (FIG. 8), that is to say the protective fabric 5 is passed through the opening 42 during the unwinding of the roller blind axis 18. So that the protective fabric 5 does not snap back through the passage opening 42 during each rolling up and thus would no longer be graspable for an operator, it has at its lower end a grip rail 43 which does not fit through the passage opening 42. A cross-sectional view of the handle rail 43 is shown in FIG. The handle rail 43 is presently also formed as a hollow profile. Again, this has several hollow chambers 43a, which allow a particularly simple installation of side end caps. The mounting of the handle rail 43 on the protective fabric 5 takes place here by clamping, in particular namely by clamping by means of a rod extending through the handle rail 43 (not shown).

So that the protective fabric 5 is not unbraked wound up due to its bias after a release for rolling, a braking device 44 is provided. In the present case, this braking device 44 is associated with the grip rail 43, namely at the two lateral ends thereof. In particular, while the braking device 44 and the bias of the blinds are coordinated such that the winding of the protective fabric 5 is carried out at a continuous rate. The arrangement and configuration of the brake device 44 is preferably such that a stronger bias causes an increased braking effect.

The braking device 44 is presently formed by a cover 46 of the handle rail 43. The end cap 46 is shown in FIG. The braking device 44 has a braking surface 45. This braking surface 45 is biased in the braking position during assembly, ie in a position in which it achieves a deceleration by friction with the guide surface 22 of the positive locking means 20 when rolling up the protective fabric 5. The braking surface 45 is pivotable out of this braking position in order to allow the simplest possible unrolling of the protective fabric 5. The bias of the braking surface 45 is preferably effected by spring force.

The arrangement of the braking surface 45 is provided in the mounting case so that it is in braking position with the guide surface 23 of the struts 6, 7 in contact. When the protective fabric 5 is pulled upwards by the bias, the braking surface 45 thus rubs against the guide surface 23 and thereby slows down the rolling up of the protective fabric 5. When pivoting the braking surface 45 out of its braking position, the braking surface 45 of the guide surface 23rd removed and a manually guided winding and unwinding of the protective fabric 5 can take place unhindered.

As described above, the handle rail 43 has the end cap 46. Furthermore, the end cap 46 has a latching lug 47, by means of which the handle rail 43 can be brought into engagement with a guide element 21. The detent 47 is presently designed as a roundish cam. In addition, the detent 47 is disposed above the braking surface 27. The guide element 21 is provided for guiding the protective fabric 5 along the struts 6, 7, in particular along the guide surface 23 of the positive locking means 20.

The guide element 21 (FIG. 12) is designed as a profile body with a cross-section that is open on one side for the positive engagement in the positive-locking means 23 of a strut 6, 7. In addition to this open cross section for the positive engagement in the positive locking means 23, the guide element 21 has a positive locking means 48 for locking the handle rail 43. (Fig. 24). This positive locking means 48 is presently provided as a tapered structure, which opens in a circular area. Through the tapered region, the locking lug 47 can be inserted into the positive locking means 48 and is latched in the round area. Particularly preferred is an embodiment in which the interlocking means 48 has the latching opening in the pulling direction, ie in the closing direction of the protective fabric 5. In this case, the bias of the protective fabric 5 supports the locking of the handle rail 43 and the guide element 21. After locking, the guide element 21 is covered with a further end cap 49 (FIG. 25), wherein the end cap 49 has a latching device by means of which it can be moved in the Guide element 21 engages. The end cap 49 covers the detent opening of the guide element 21 and thus prevents unintentional release of the guide element 21 and the handle rail 43.

In a further embodiment (not shown) of a frame system, the roller blind cassette does not itself form a strut of the frame as before, but instead is displaceable horizontally or vertically to the window in the case of installation. The wound on the roller blind protective fabric is then connected with its free end fixed to a strut of the frame. When moving the Rollokassette thus assumes the function of the handle rail. When shifting the protective fabric is unrolled and in turn covers the window opening.

In yet another embodiment (not shown), the operation of the blinds, so the rolling and possibly winding, not as previously on the handle rail but by means of a belt drive. The belt drive is in operative connection with the roller blind axle. By moving the belt in a first direction, the roll axis is rotated and the protective fabric unwound. When moving the belt in the opposite direction and the roller blind axis is rotated in the other direction and so wound up the protective fabric again. The operation of the belt drive can be done manually and / or motor depending on the configuration.

Claims

claims

1. Frame system of a shield for mounting on a window frame (2), in particular the window frame of a window, with at least two lateral, an upper and a lower strut (6, 7,

8, 9), wherein the struts (6, 7, 8, 9) in the mounting case, a frame of

Form shield, characterized in that the struts (6, 7, 8, 9) locking devices (10) and can be locked together by means of this, so that in the case of assembly the rectangular

Train frame.

2. Frame system according to claim 1, characterized in that each strut (6, 7, 8, 9) at least one end cap (1 1, 12, 14,

15, 16) and that the end cap (11, 12, 14, 15, 16) a

Locking device (10), preferably, that only the end caps (11, 12, 14, 15, 16)

Having latching devices (10) for locking the struts (6, 7, 8, 9) with each other.

3. Frame system according to claim 2, characterized in that the end cap (1 1, 12, 14, 15, 16) up or in the strut (6, 7, 8, 9) can be inserted, preferably, that the end cap (1 1, 12, 14, 15, 16) with the strut (6, 7, 8, 9) can be latched.

4. Frame system according to one of the preceding claims, characterized in that at least one, preferably all struts (6, 7, 8, 9) are formed as a hollow profile.

5. Frame system according to one of the preceding claims, characterized in that one of the struts (6, 7, 8, 9) is designed as a roller blind cassette for receiving a wound protective fabric (5).

6. Frame system according to one of the preceding claims, characterized in that two mutually oppositely arranged struts (6, 7, 8, 9), in particular the side struts (6, 7), a guide slot (19) in the longitudinal direction of the strut (6, 7 ) for receiving and guiding a protective fabric (5).

7. Frame system according to claim 6, characterized in that the guide slot (19) is tapered.

8. Frame system of a shield for mounting on a window frame (2), in particular the window frame of a window, with at least two lateral, an upper and a lower strut (6, 7,

8, 9), wherein the struts (6, 7, 8, 9) in the mounting case, a frame of

Form shield, in particular according to one of the preceding claims, characterized in that the struts (6, 7, 8, 9) are made of plastic.

9. Frame system according to claim 8, characterized in that the struts (6, 7, 8, 9) made of a styrene / acrylonitrile copolymer

Plastic, in particular an acyl nitrile-styrene-acrylate plastic are made or that the struts (6, 7, 8, 9) a styrene / acrylonitrile copolymer coating

(Coextrusion / laminate), in particular having an acylnitrile-styrene-acrylate coating.

10. Frame system of a shield for mounting to a window frame (2), in particular the frame of a window, with at least two lateral, an upper and a lower strut (6, 7, 8, 9), wherein the struts (6, 7, 8 , 9) in the case of installation a frame of Shield form and wherein one of the struts (6, 7, 8, 9) as

Roller blind cassette (8) is formed, in particular according to one of the preceding claims, characterized in that at least one in the case of installation perpendicular to the roller blind cassette (8) arranged strut (6, 7) extending in the longitudinal direction

Has positive engagement means (20) for guiding the protective fabric (5).

1 1. A frame system according to claim 10, characterized in that the positive locking means (20) is designed as a substantially T-shaped structure which forms a longitudinally extending guide surface (22) and a Hintergreifung the guide surface (22).

12. Frame system of a shield for mounting to a window frame (2), in particular the window frame of a window, with at least two lateral, an upper and a lower strut (6, 7,

8, 9), wherein the struts (6, 7, 8, 9) in the mounting case, a frame of

Form shield, in particular according to one of the preceding claims, characterized in that at least two struts (6, 7, 8, 9) each have a longitudinally extending positive locking means (23) in which a mounting clamp

(24) can be arranged positively in two spatial directions and displaceable along the third spatial direction.

13. A frame system according to claim 12, characterized in that the positive locking means (23) is formed as a substantially T-shaped structure which forms a longitudinally extending guide surface (25) for the fastening clamp (24) and a Hintergreifung the guide surface

(25) through the mounting clamp (24) allows.

14. Frame system according to claim 13, characterized in that the bracing (6, 7, 8, 9) has two lateral guide collars (26, 27), each extending in the longitudinal direction parallel to the left and right adjacent to the positive locking means (23), in particular the T-shaped structure, preferably that the minimum distance between the form-fitting means (23), in particular the T-shaped structure, and the respective guide collar (26, 27) corresponds substantially to the thickness of the fastening clip (24).

15. Frame system according to one of claims 12 to 14, characterized in that at least one strut (6, 7, 8, 9) a positive locking means (20) for guiding the protective fabric (5) and a positive locking means (23) for a fastening clamp (24 ), preferably, that the two positive locking means (20, 23) are arranged offset by substantially 90 ° to each other.

16 frame system of a shield for mounting to a window frame (2), in particular the frame of a window, with at least two lateral, an upper and a lower strut (6, 7,

8, 9), wherein the struts (6, 7, 8, 9) in the mounting case, a frame of

Form shield, in particular according to one of the preceding claims, characterized in that at least two in the case of assembly opposite each other

Struts (6, 7, 8, 9) a structure for Hintergreifung the window frame

(2) and having arrangement thereon.

17. Frame system of a shield for mounting to a window frame (2), in particular the frame of a window, with at least two lateral, an upper and a lower strut (6, 7, 8, 9), wherein the struts (6, 7, 8 , 9) in the case of installation form a frame of the shield, with a roller blind cassette (8), a roller blind axle (18) and a protective fabric (5), the protective cloth (5) being wound onto the roller blind axle (18), the roller blind axle (18 ) is rotatably mounted in the roller blind cassette (8), and wherein the roller blind axis (18) is biased in the winding direction, in particular according to one of the preceding claims, characterized in that the bias of the roller blind axis (18) is adjustable.

18. Frame system according to claim 17, characterized in that the bias voltage is gradually adjustable.

19. Frame system according to claim 17 or 18, characterized in that on the roller blind axis (18), in particular end, a setting wheel (35) is arranged for adjusting the bias voltage.

20. Frame system according to claim 19, characterized in that the setting wheel (35) with a pawl (40) is in operative connection, preferably, that the pawl (40) is pivotally mounted and pivotable from a locking position to a release position.

21. Frame system according to claim 20, characterized in that the pawl (40) by means of a button (36) from its locking position into the release position is pivotable, preferably, that the button (36) made of plastic, in particular made of flexible plastic.

22. Frame system according to claim 21, characterized in that the button (36) has a driver (36a) for returning the pawl (40) in the blocking position.

23. Frame system according to one of claims 20 to 22, characterized in that the pawl (40) is biased in its blocking position.

24. Frame system according to one of claims 17 to 23, characterized in that the bias of the roller blind axis (18) by means of a spring (32) is applied, preferably that the spring (32) within the roller blind axis (18) and / or on a Stellachse (33) is mounted.

25. Frame system according to claim 24, characterized in that the spring (32) with a first end (32 a) relative to the roller blind axis (18) is mounted stationary and with a second end (32 b) relative to the roller blind axis (18) movable, in particular rotatable , stored.

26. Frame system according to claim 25, characterized in that the spring (32) is mounted with its first end (32a) in a driving cam (38) and / or that the spring (32) with its second end (32b) in a Verklipsung (39) of the adjusting axis (33) is mounted.

27. Frame system according to claim 25 or 26, characterized in that the spring (32) with its second end (32b) relative to the adjusting wheel (35) is mounted stationary.

28. Frame system according to one of the preceding claims, characterized in that the frame system has a roller blind cassette (8) which has at least one end of a cap (15, 16).

29. Frame system according to claim 28, characterized in that the end cap (15; 16), preferably both end caps (15, 16), a bearing pin (17) for supporting the roller blind axis (18).

30. Frame system according to claim 28 or 29, characterized in that within a cover cap (15; 16) a gear arrangement (34) is arranged for adjusting the spring preload, preferably that the gear assembly (34) as a component of the adjusting wheel (35) of the adjusting axis (32) and / or the button (36).

31. Frame system according to one of claims 28 to 30, characterized in that the end cap (15; 16), preferably both end caps (15, 16), a locking device (10).

32. Frame system according to one of the preceding claims, characterized in that the frame system has a roller blind cassette (8) and that the roller blind cassette (8) is designed as a hollow profile.

33. Frame system according to one of the preceding claims, characterized in that the frame system has a roller blind cassette (8) and that the roller blind cassette (8) forms one of the struts (8) of the frame.

34. Frame system of a shield for mounting on a window frame (2), in particular the window frame of a window, with at least two lateral, an upper and a lower strut (6, 7,

8, 9), wherein the struts (6, 7, 8, 9) in the mounting case, a frame of

Shield form, with a roller blind cassette (8), a roller blind axis (18) and a protective fabric (5), wherein the protective fabric (5) on the roller blind axis (18) is wound, wherein the

Roller blind (18) is rotatably mounted in the roller blind cassette (8), and wherein the

Rolloachse (18) is biased in the winding, in particular according to one of the preceding claims, characterized in that the roller blind cassette (8) in the mounting case horizontally or vertically to the window is displaceable and that the protective fabric (5) is fixedly connected at one end to a strut so that it is unrolled upon displacement of the roller blind cassette (8).

35. Frame system according to one of claims 17 to 34, characterized in that a belt drive for winding and unwinding of the protective fabric (5) or for displacing the roller blind cassette (8) is provided.

36. Frame system according to one of claims 17 to 35, characterized the roller blind cassette (8) has a form-locking means (23) extending in the longitudinal direction, in which a fastening clamp (24) can be arranged positively in two spatial directions and slidable along the third spatial direction, preferably in that the positive-locking means (23) are substantially T-shaped Structure is formed, which forms a longitudinally extending guide surface (25) for the mounting clamp (24) and a Hintergreifung the guide surface (25) through the mounting clamp (24).

37. Frame system according to one of claims 17 to 36, characterized in that the roller blind cassette (8) has a passage opening (34) for the protective fabric (5) in the longitudinal direction.

38. Frame system according to one of claims 17 to 37, characterized in that a handle rail (43) at the lower end of the protective fabric (5) is arranged, preferably, that the protective fabric (5) in the handle rail (43) is clamped.

39. Frame system of a shield for mounting on a window frame (2), in particular the window frame of a window, with at least two lateral, an upper and a lower strut (6, 7,

8, 9), wherein the struts (6, 7, 8, 9) in the mounting case, a frame of

Rolloachse (18) is biased in the winding, in particular according to one of the preceding claims, characterized in that a braking device (44) is provided, which is an unrestrained

Winding the protective fabric (5) prevents, preferably, that the braking device (44) on the handle rail (43) is arranged.

40. Frame system according to claim 39, characterized in that the braking device (44) has a braking surface (45) and that the braking surface (45) is pivotally mounted, preferably, that the braking surface (45) pivoted in the mounting position in the braking position, in particular in the braking position is biased.

41. Frame system according to one of claims 38 to 40, characterized in that the grip rail (43) has an end cap (46), preferably, that the end cap (46) has the braking surface (45).

42. Frame system according to claim 41, characterized in that the handle rail (43), in particular the end cap (46), a latching lug (47), in particular in the form of a cam for engagement in a guide element (21).

43. Frame system according to claim 42, characterized in that a guide element (21) for guiding the protective fabric (5) along at least one strut (6, 7, 8, 9) is provided.

44. Frame system according to one of claims 39 to 43, characterized in that the braking surface (45) is arranged in the mounting case such that it in the braking position with a strut (6, 7, 8, 9), in particular a guide surface (23) of Strut (6, 7, 8, 9) is in contact.

45. Fixing clamp for drill-free fastening of a frame system (3) to a window frame (2), in particular a frame system (3) according to one of the preceding claims, characterized in that the clamp (24) has two elements (28, 28) mounted displaceable relative to one another.

29) and that the two elements (28, 29), in particular by means of a

Screw connection (30) are detachably connected together.

46. Mounting clamp according to claim 45, characterized in that an element (28) - guide element - is designed as a profile body with a cross-section that is open on one side for positive engagement in a form-locking means (23) of a strut.

47. Fixing clamp according to claim 45 or 46, characterized in that an element (29) - clamping element - an angled leg (31), wherein the leg (31) in the case of assembly with the second element (28), in particular the guide element, a one-sided open cross-sectional profile forms.

48. Mounting clamp according to one of claims 45 to 47, characterized in that an element (28, 29), in particular the clamping element (29) is designed to be interchangeable.

49. Mounting clamp according to one of claims 45 to 48, characterized in that the two elements (28, 29) are made of metal.

50. Befestigungsklemmenset comprising a mounting clamp (24) according to any one of claims 45 to 49, characterized in that an element (28, 29), in particular the clamping element (29) is provided several times and that the two elements (28, 29) at least in one

Range (X) differ in terms of their length, in particular, that the region (X) of the two clamping elements (29) in front of the angled leg (31) is formed differently long.

51. Guide element, in particular for use in a frame system (3) according to one of claims 1 to 44, wherein selbiges is formed as a profile body with a unilaterally open cross-section for positive engagement in a positive locking means (20) of a strut, characterized that in addition a positive locking means (48) for locking a handle rail (43) is provided.

52. Guide element according to claim 51, characterized in that the interlocking means (48) for latching the handle rail (43) is provided as a tapered opening, which opens into a substantially circular area.

53. Guide element according to claim 51 or 52, characterized in that the positive locking means (48) for latching the handle rail (43) has a latching opening in the pulling direction.