EP3112576B1 - Building closure in explosive inhibiting design comprising a restraining device between fixed frame and leaf frame - Google Patents

Description

introduction

• einen Blendrahmen, der mittels mindestens eines Befestigungselemts mit einem Teil eines Gebäudes in kraftübertragender Weise verbindbar und aus mehreren Blendrahmenschenkeln in Form von Profilstücken zusammengesetzt ist,
• einen in dem Blendrahmen um mindestens eine Drehachse mit Hilfe mindestens eines Beschlagelements drehbar gelagerten und aus mehreren Flügelrahmenschenkeln in Form von Profilstücken zusammengesetzten Flügelrahmen,
• eine in dem Flügelrahmen befestigte Füllung,
• eine den Flügelrahmen an den Blendrahmen oder an ein Befestigungselement des Blendrahmens koppelnde Rückhalteeinrichtung in Form eines flexiblen Zugmittels, das sowohl mit dem Flügelrahmen als auch mit dem Blendrahmen oder dem Befestigungselement des Blendrahmens in kraftübertragender Weise verbunden ist und eine solche Länge aufweist, dass der Flügelrahmen von einer Schließstellung durch Drehen um die Drehachse in einen Öffnungszustand überführbar ist, wobei im Falle eines sprengwirkungsbedirigten Herausreißens des Flügelrahmens aus dem Blendrahmen der Flügelrahmen mittels des dann eine Haltekraft übertragenden Zugmittels in einer Fangposition in einem definierten Abstand zu dem Blendrahmen haltbar ist, wobei das Zugmittel in der Schließstellung des Flügelrahmens von außerhalb des Gebäudeabschlusses her unsichtbar in einem Falzbereich zwischen dem Flügelrahmen und dem Blendrahmen angeordnet ist.

The invention relates to a building completion in blast resistant design, comprising

• a frame, which is connected by means of at least one Befestigungselemts with a part of a building in a force-transmitting manner and composed of several frame legs in the form of profile pieces,
• one in the frame around at least one axis of rotation by means of at least one fitting element rotatably mounted and composed of a plurality of wing frame legs in the form of profile pieces wing frame,
• a filling fixed in the casement,
• a retaining means in the form of a flexible traction means which connects the casement frame to the frame or to a fastening element of the frame and which is connected in a force-transmitting manner to both the casement and the frame or the fastening element of the frame and has a length such that the casement of FIG a closing position can be converted by rotation about the axis of rotation in an open state, wherein in the case of a demolition tearing out of the sash frame from the frame of the sash by means of then transmitting a holding force traction means in a catching position at a defined distance to the frame, the traction means in the closed position of the sash is invisibly arranged from outside the building closure in a folded region between the sash and the frame.

As building closures in blast resistant design execution are understood as those that can withstand at least a peak pressure in the amount of 0.1 bar, without parts of the building closure uncontrollably loosen or splinter and represent a danger to nearby people.

The term frame leg according to the present invention also includes a rung, which typically represents a single, mostly vertically extending, frame leg of two adjacent frame. Accordingly, a rung takes on a dual function for a two-winged building completion, Also Mehrfeldrige building closures with vertical and horizontal rungs are conceivable.

Rotatably mounted is a sash in the context of the present invention, if it is designed for example as a rotary wing, tilting wing or turn-tilting sash. Thus, the sash can be rotated, tilted or folded at least one axis, depending on whether the axis is aligned horizontally or vertically. In the case of a turn-tilt wing, the sash can also rotate or tilt about a mostly vertical to the tilt axis extending axis of rotation. To ensure trouble-free opening of a designed as a window or door wing turn-tilt wing, the traction means should always be located on the hinge side of the building closure.

The filling of the building closure may consist of laminated glass, float glass with splinter film or polycarbonate or be designed as a panel filling.

The defined distance, in which the wing frame is due to the pulling means in a blast caused tearing out with respect to the frame, whereby a pressure relief cross section is released, can be in the range of rotation of the sash of a few centimeters to half a meter and is ultimately of the "excess "Length of the traction device determined.

State of the art

Building closures, which allow analogously to the building closure according to the invention a controlled pressure equalization, are known from the prior art. However, the arrangement of a retaining device from the outside invisible within the folding area in terms of the leadership of the traction means and the functionality of an at least tiltable sash represents a challenge.

From the DE 20 2011 001 815 U1 is a concealed, flexible cable security for windows known to prevent the "flying away" of the wing in the event of an explosion-like pressure wave. The cable running within the fold area is held in tension by a tension spring in such a way that it always glides back to the starting position when the wing is closed. Thus, the spring allows a normal operation of the window without the excess rope length forms a loop or any other undefined remains or hooked in the folding area.

Out EP2789784 is a building completion with the features of the preamble of claim 1 named. However, it has been shown that the above-described known designs are complicated and cost-intensive and, moreover, do not achieve the desired effect. When closing the tilted wing occurs in spite of the springs, that the steel rope does not optimally get back into the glare or sash leg.

In addition, the resulting force that must be absorbed by the restraint in the event of an explosion depends proportionally on the area of the building closure This means that retaining devices for large-scale building closures must absorb significantly higher forces than required for small-scale building closures. This is particularly problematic when retaining devices for large-scale building completions run within the folding area, since the accommodation and in particular the deflection of more massive and thick traction means between rabbet area and glare and / or sash are difficult to impossible due to the greater rigidity of the thick traction means.

Another reason for the need for more stable traction means are the increasing demands that must be complied with when constructing new buildings. When categorizing the building closures, for example, a distinction is made between those that can withstand a peak pressure of 0.5 bar, 1.0 bar, 1.5 bar or 2.0 bar, without parts of the building closure uncontrollably solve and fly around. Excessive demands on the blast resistance inhibition of building closures, a design as an openable building completion due to the large required cross-sectional dimensions of the traction device is not possible.

task

For this reason, it is an object of the present invention, a building closure of the type described above with öffenbarem sash further so that it complies with the one optical requirements and on the other is also suitable for high demands in terms of blast resistance.

solution

This object is achieved in that the traction means is composed at least in a section of at least two individual wire ropes, which run side by side and independently along each longitudinal axis are bendable. This ensures that the traction means overall very stable, ie thick, can be formed and yet sufficiently flexible deformable at least in the section, so that the introduction of the same in the building closure, which requires a deflection of the traction device, is possible. The deflection is required in particular in the areas in which the traction means is guided starting from the folding area on or in the blend or sash, ie where there is a change of direction with regard to the course of the traction means in the installed state, wherein a Deflection of about 90 ° takes place. The invention thus makes use of the effect that two wire cables with a common cross-sectional area corresponding to that of a single thick wire rope are much easier to bend than the single thick wire rope. Expressed in terms of specific values, a wire rope with a diameter of 4 mm and a cross-sectional area can be used of 12.57 mm ² extremely difficult to bend, whereas two wire cables, each with a diameter of about 2.83 mm and a cross-sectional area of 6.29 mm ² , so together also have a cross-sectional area of 12.57 mm ² , still flexible and are easily diverted. Due to the present invention, it is therefore possible to form an openable building closure with a significantly higher blast resistance. In this case, a building closure can be designed individually by selecting the number of wire ropes in the section and their diameter for different maximum requirements.

The fact that the at least two wire cables run next to one another means according to the present invention that they have a maximum distance in a range of 0 mm to 50 mm to each other. Accordingly, they may also touch each other selectively or over a longer length.

The connection of the traction means in a force-transmitting manner with the frame and casement can be done in various ways. The traction means can be attached to corresponding attachment points on the fold region facing profile walls of the blend and / or sash, so that the traction device extends exclusively in the rebate area. Another possibility provides that the traction means is guided through passage openings in the respective profile of the blend and / or sash and within the profile has suitable connection means or attachment points. Accordingly, the traction means then extends both within the fold region and within at least one frame profile. These types of attachment are, for example, in the applicant's earlier and previously unpublished application DE 10 2014 114 852 described.

In order to allow a comfortable installation of the traction device, the section should be located in the rebate area or extend in addition to the rebate area in an interior of at least one frame leg, since there is a deflection of the traction device is required. As previously mentioned, the deflection is about 90 ° there.

According to an advantageous embodiment of the invention, the traction means as a whole, that is exclusively, composed of at least two individual wire ropes, which run side by side and independently along each longitudinal axis of the respective wire rope are bendable. Accordingly, the traction means is composed of a first end to a second end of at least two wire ropes together. In the event that the traction means is located exclusively in the fold region, a first end is attached to the fold frame on the side of the frame and a second end of the wing frame. In the event that the at least two wire ropes are guided to within the frame profiles, the first end in the frame and the second end in the sash can are located; but it is also conceivable that both ends are in the frame or sash. In the latter case, the traction means thus extends from an interior space in the frame (or sash) through a passage opening in the rebate, through a further passage opening in the sash (or frame), through a third passage opening in the rebate area and from there again through a fourth Passage opening in the frame (or sash) back.

That the traction means advantageously consists of at least two continuous separate wire ropes has the advantage that the individual wire ropes are sufficiently flexible over their entire length, whereby the mobility of the sash is positively influenced during opening and closing. An entanglement of a wire rope, as may occur in a rigid wire of great thickness, is thus counteracted.

If the at least two wire ropes are guided into the profiles of the glare and / or sash frame, they can be guided through a common feedthrough opening in the window frame and / or a common leadthrough opening in the sash frame. Alternatively, the at least two wire ropes can be guided in the sash frame by two different feedthrough openings arranged side by side or one above the other in the window frame and / or two different feedthrough openings arranged side by side or one above the other. If the wire ropes are passed through two separate feedthrough openings, it must be ensured that the free length of the wire ropes, which defines the maximum deflection of the casement frame in the event of an explosion, coincides so that the forces occurring in the event of an explosion are equally divided between the different wire ropes , If the free length of the wire ropes does not match, there is a one-sided load on a single wire rope, which then possibly fails in the event of an explosion.

With regard to the attachment of the wire ropes to glare and / or sash, there is the possibility to attach the at least two wire ropes at a common attachment point on the frame and / or at a common attachment point on the sash. It should be noted that in the event of an explosion greater forces occur at common attachment points, for which the fastening means must also be designed. In the event that the attachment is made to a fastener of the frame, this condition should be met. The attachment of the wire ropes at a common attachment point has the advantage that the stress of the wire ropes is evenly distributed in the event of an explosion on both wires and can not be a one-sided load on the wire ropes.

Alternatively, the at least two wire ropes may be attached to the sash frame at two different attachment points and / or to the sash frame at two different attachment points.

According to an advantageous embodiment of the invention, the traction means consists of two wire cables, each having a diameter between 2.5 mm and 5.5 mm, preferably between 3.5 mm and 4.5 mm. The two wire ropes can have a different diameter, for example, a wire rope has a diameter of 2.5 mm and the second wire rope have a diameter of 3 mm. However, the arrangement of three or more wire ropes is possible, each having a diameter in the aforementioned range. The third wire rope can, for example, run next to the two aforementioned wire ropes or be arranged in the region of another frame leg. For example, in a turn-tilt window, two wire ropes can be arranged on the band side and additionally a wire rope can be arranged on the horizontal upper panel and casement area, whereby the opening width would be set to a predetermined width. Provided is also the possibility to install at this point two or three wire ropes to achieve the same strength as in the mostly vertical wire ropes on the hinge side.

Alternatively, a building closure can be equipped with the traction means of several wire ropes only in the horizontal frame and wing frame area, typically where the scissors is arranged, so that the wing in the event of failure on the lower frame legs in the event of an explosion opens up and is held by the traction means.

The at least two wire ropes can be connected at least one point via connecting means to determine the position of each other to some extent. As a connecting means, a clip can be used or the wire ropes are wrapped with a wire. Other connection means are also conceivable. Another advantage in the connection of the wire ropes is the fact that the wire ropes when opening and closing the casement do not hit each other uncontrollably and thus disturbing noise during operation of the casement are avoided.

In order to further limit uncontrolled movement of the wire ropes during operation of the sash, the at least two wire ropes in a central region of the section may also be connected to the sash within an associated sash leg. This also has the positive aspect that the wire ropes are not pulled down completely due to their weight and when opening the sash, a high frictional resistance must be overcome. The fixation of the wire ropes, preferably at mid-height of the sash ensures that a predetermined free length of the wire ropes is present at the top and bottom of the traction means. In the event that the casement is torn in the explosion case only on an upper side of the frame, only an upper part of the traction means comes into play. In the event that the entire casement is catapulted out of the frame, the entire traction means comes into play and the casement is - depending on the position of the fixation of the wire ropes - held in a state approximately parallel to the frame parallel state.

An advantageous embodiment of the building closure according to the invention further provides an existing in the closed position offset between a force application point of the traction means on the frame and a force application point of the traction means on the sash, wherein the offset in the longitudinal direction of each having a force application point profile piece of the frame and the sash in extends its closed position. As a result, the traction means does not extend over the shortest path from the frame to the sash, but freely over the length of the offset within the folding area. The traction means can run in various ways, for example, straight, wavy or gathered. Due to the offset the movement of the sash is significantly increased when opening or closing.

A force application point can either be formed by an attachment point of the traction means on the diaphragm or wing frame, to which the traction means is fixed immovably, for example by means of screws or other fastening means. This can advantageously take place on a side of the frame facing the fold area. If the frames are made of steel profiles and not of aluminum, a welded connection between a wire cable holder of the traction means and frame is conceivable. In particular, the forces that occur in an explosion are thus transferred from the tearing wing frame on the attachment point on the sash to the traction device, from which the force is derived in the attachment point to the frame in the frame and finally in the building.

On the other hand, a force introduction point can be formed by the circumference of a passage opening through which the traction means passes into the glare or sash frame. In this case, the traction means by means located within the window or sash fasteners, such as a wire rope clamp, a dowel o. Ä. Indirectly or directly connected to the respective frame, between the periphery of the passage opening and the traction means a relative displacement is possible. The scope of a passage opening defined according to the present application, a force application point at which the forces occurring in the event of an explosion of the traction means in the Blend and sash be initiated. Starting from the liberating in the event of an explosion wing frame, the resulting force from the fastening means, which is typically located at one end of the traction means in the circumference of the passage opening on the sash in the traction means and from there over the circumference of the passage opening to the frame in the frame and finally derived in the building.

If the force introduction points are formed by attachment points, the length of the traction means determines the maximum deflection of the casement in the region of the attachment point on the casement in its open position. The offset, however, determines the area in which the traction means can move freely and align.

If, on the other hand, the force introduction points are formed by the circumference of a respective leadthrough opening, the free length of the traction means within the fold area is surprisingly decisive for frictionless actuation of the sash frame from its closed state into the open position and back again into the closed state. When opening the sash, the force application point of the sash moves away in a direction perpendicular to the frame from the force application point of the sash. Due to the free length of the traction means in the rebate area, it is not necessary that the total length of the traction means required for transferring the sash to its open position must be "pulled out" of the sash and sash, but only a very small portion. This has the particular advantage that only this small part when closing the casement must be returned to the frame. This leads to a much smoother operation of an openable building closure.

Depending on the openability of the building closure according to the invention, the offset is horizontal or vertical.

In particular, in building closures with tilt-wing or tilt-and-turn wings lends itself to that the offset is vertical and the force application point of the traction means is arranged on the frame below the force application point of the traction means on the sash. Alternatively, the force application point of the traction means may be located on the frame but also above the force application point of the traction means on the sash. If the retaining device, that is to say in particular the traction means, is arranged in a horizontally extending fold region, for example in the upper horizontal fold region in which the scissors are located in the case of a tilt or turn-tilt wing, the offset should run horizontally, so that different force introduction points lie next to each other.

Optimally, the length of the offset is selected so that when transferring the wing frame from its closed position to an open position, a relative movement between the traction means and the respective passage opening is less than 40 mm, preferably less than 30 mm, more preferably less than 20 mm. Consequently, only a very short portion of the traction means when closing the casement must go back into the frame, which is extremely difficult due to the flexibility of the traction means. Moreover, it is conceivable that the part of the traction means that exceeds the length of the offset also remains in the rebate area and does not get back into the frame, whereby the traction means can then run wavy or sag downwards. A hooking of the traction device during the closing process is thus effectively avoided in the building completion according to the invention.

According to an advantageous embodiment of the invention, the offset between 50 mm and 250 mm, preferably between 100 mm and 200 mm, more preferably between 150 and 180 mm and depends on the wing size and opening width.

Of course, it may be advantageous to arrange two, three or four traction means on the building completion, which are each located on different frame legs. If two traction means, each consisting at least in sections of at least two wire ropes arranged, they may be arranged on opposite frame legs or at two, typically meeting at a right angle adjacent frame legs. By the arrangement of traction means on different frame legs the trajectory of the sash is significantly reduced in the event of an explosion and the sash does not get as far into the room, as is the case in the case of a single traction means. This further reduces the risk of injury to persons in the room. If a traction mechanism is arranged on all four sides, ie frame legs, in a classic tilt-and-turn window, the flying in of the sash frame is optimally limited in the event of an explosion, but the use of the rotary tilting wing in normal operation is somewhat restricted.

embodiment

The invention becomes particularly clear with reference to the following exemplary embodiments in each case to a building closure according to the invention.

Fig. 1:

eine Innenansicht eines ersten erfindungsgemäßen Gebäudeabschlusses,

Fig. 2:

einen Vertikalschnitt durch den Gebäudeabschluss nach Figur 1,

Fig. 3:

einen Vertikalschnitt durch einen alternativen Gebäudeabschluss,

Fig. 4:

eine Detailansicht des Gebäudeabschlusses aus Figur 3 und

Fig. 5:

eine Innenansicht eines weiteren alternativen Gebäudeabschlusses.

It shows

Fig. 1:

an interior view of a first building closure according to the invention,

Fig. 2:

a vertical section through the building completion after FIG. 1 .

3:

a vertical section through an alternative building closure,

4:

a detailed view of the building FIG. 3 and

Fig. 5:

an interior view of another alternative building completion.

In the FIG. 1 the interior view of a first building completion 1 according to the invention in the form of a turn-tilt window is shown, which has a frame 2 and a rotatable about a vertical axis of rotation 3 and about a horizontal axis of rotation 3 'tiltable sash 4, which in turn frames a filling 5. Both the frame 2 and the sash 4 each consist of two horizontally extending frame legs 6 or wing frame legs 7 and two vertically extending frame legs 8 or wing frame legs 9, wherein the frame legs are each composed of profile pieces. The transfer of the sash 4 of a in the FIG. 1 shown closed position 10 in an open position is - as known from the prior art and not further explained here - achieved by means of a fitting element 11.

The frame 2 is fixedly connected by means of distributed over its circumference arranged fasteners 12 with a building not shown in the figure, in the figure, only the three located on a hinge side fasteners 12 are shown in the form of dowels by way of example. The hinge side is the side of the window at which the serving for the rotatable mounting of the sash 2 bands 13 are located.

In order to prevent the casement 4 from being thrown uncontrollably out of the frame 2 in the event of an explosion-induced pressure wave, the window according to the invention is equipped on the strip side with a retaining device 14 which, on the whole, consists of a flexible traction means 15. The retaining device 14 is therefore arranged on the hinge side, so that the function of the turn-tilt wing, in particular when untwisting about the rotation axis 3 and tilting about the rotation axis 3 'is not limited and in the open or tilted state of the sash 4 hardly parts of the retainer 14th are visible.

The traction means 15 extends from an upper, located in a profile chamber 16 of the frame 2 end 17 via a rebate 18 by a profile chamber 19 of the sash 4 and ends with a lower end 20 back in the profile chamber 16 of the frame 2, after it the folding area 18 again crossed. The transitions of the traction means 15 from the profile chamber 16 of the frame 2 in the folding area 18 and from there back into the profile chamber 19 of the sash 4 and vice versa via feedthrough openings 21a, 21b, 21c, 21d in the Profilkammerwandungen.

The exact design of the traction device 15, which in turn is composed of two individual immediately adjacent running wire ropes 22, is in the FIG. 2 better too recognize, with the FIG. 2 a vertical section of the opened building 1 completion FIG. 1 shows.

Both an upper end 17 'and a lower end 20' of the respective wire ropes 22 are formed as a loop 23 to a fastener 12 which is held closed via a wire cable clamp 24, wherein the wire rope clamp 24 has significantly larger dimensions than the passage opening 21 a as well 21d. In the case of an explosion-related tearing out of the casement 4 from the frame 2, the traction means 15 is indeed drawn taut, but held by the wire rope clamps 24 in a tucking position. In the catching position, which is not shown in the figure, the casement 4 is at a defined distance from the frame 2, wherein the distance results from the excess length of the traction means 15.

A circumference U of a respective bushing opening 21a, 21b, 21c, 21d defines, according to the present application, a force introduction point 25 on which, in the event of an explosion, the forces occurring are introduced by the traction means 15 into the blend and casement frames 2, 4.

At the upper end 17 of the pulling means 15, the lead-through opening 21a on the window frame and the lead-through opening 21b on the casement in the longitudinal direction of the relevant frame leg are offset from one another and indeed the lead-through opening 21b is higher than the lead-through opening 21a. A thus existing vertical offset V between the two passage openings 21a and 21b in the present example is 165 mm. The offset V is here interpreted as the distance of the center axes of the passage openings 21a and 21b.

A vertical offset between the passage openings 21c and 21d in the region of the lower end 20 of the traction means may have a smaller amount than the offset V.

In the in the FIG. 1 shown closed state 10 of the window, the retainer 14, which runs in the profile chambers 16, 19 of the frame profiles and the folding area 18, not visible.

From the FIG. 2 It is apparent to what extent, in particular, the offset V and a related free length L of the traction means 15, so the two wire ropes 22, advantageously affect a tilting of the window: If the casement 4 is opened, the passage opening 21b moves on a circular path about the rotation axis 3 ', wherein the passage opening 21b in the in the FIG. 2 shown plane and due to the relatively large radius mainly in the horizontal direction away from the passage opening 21a. Due to the free length of the traction means 15, which is available in the rebate area in the region of the offset, the traction means of the movement as far as possible Follow by pure alignment. The existing in the tilted position between the passage openings 21a and 21b or 21c and 21d, which is greater than the distance between the passage openings 21a and 21b and 21c and 21d in the closed position, must therefore be compensated only by a small length, the slipping out of the frame legs into the fold area. Consequently, the traction means must also get back with a small length when closing the wing in the frame legs. It is even conceivable that the entire required for a tilted length of the traction means can be accommodated within the rebate area and a return of the same in the frame legs completely eliminated. With α, the opening angle is referred to in the tilted position, of which the distance between the frame 2 and sash 4 depends on the force transmission points 21 a and 21 d, wherein the distance from the rotation axis 3 'in the vertical direction upwards is getting larger.

In the FIG. 2 It can also be seen that the two wire ropes 22 are guided into the profile pieces of the frame legs by a respective common feed-through opening 21a, 21b, 21c and 21d. Approximately at mid-height of the sash 4, the two wire ropes 22 are connected by a connecting means 26 in the form of a wire rope clamp both together and with an inner space I facing Flügelrahmenwandung 27, wherein the wire rope clamp has a base plate 28 which is bolted to the Flügelrahmenwandung 27. The exact structure of the connecting means 26 is in the FIG. 4 to recognize.

The FIG. 3 shows a vertical section through a second building completion 1 'according to the invention, which differs from the building completion 1 FIG. 1 another retainer 14 'has. The retaining device 14 'consists of two individual traction means 15' running in the fold region, one of which is arranged in the upper region of the band side and the other in the lower region of the band side. The traction means 15 'again consist of two wire ropes 22', which are significantly shorter than the wire ropes 22 from FIG. 1 ,

The attachment of the wire ropes 22 'with the frame 2 is identical to FIG. 1 provided and defines attachment points 29 _B with the frame 2. The attachment of the wire ropes 22 'with the sash 4 corresponds to the attachment of the wire ropes 22 at mid-height of the sash 4 from FIG. 1 , wherein the attachment according to FIG. 3 for the upper traction means 15 'is positioned above the average height and for the lower traction means 15' below the average height of the sash frame 4. Accordingly, the building completion has 1 'after FIG. 3 two connecting means 26 which define two attachment points 29 _F with the sash.

The attachment points 29 simultaneously form force introduction points at which, in the case of an explosive force, the forces occurring when the casement 4 is released are transmitted.

The FIG. 4 shows in detail the upper traction means 15 'from FIG. 3 , wherein the sash 4 is shown in its closed state 10. It can be seen that the two wire ropes are each guided through their own passage opening 21 a1, 21 a2, 21 b1, 21 b2 in the frame 2 and in the casement 4, wherein the passage openings 21 a1, 21 a2, 21 b1, 21st b2 are each provided with a sleeve 30.

Furthermore, the two wire ropes 22 'have a common attachment point 29 _B , 29 _{F on} both the frame 2 and the sash 4, wherein the wire ropes 22' at the attachment point 29 _B are looped about a respective loop 23 around the fastener 12 and at the attachment point 29th _F are fixed by means of the connecting means 26 in the form of a cable clamp.

The wire ropes 22 'each have a diameter of 3 mm.

Finally, the shows FIG. 5 a further embodiment of a building closure according to the invention 1 "in the closed position 10, which has a more extensive retention device 14" as the building 1 completion FIG. 1 , On the one hand, the building closure 1 ", which is designed analogously to the building closure 1 'as a turn-tilt window, a traction means 15 on the hinge side and on the other a traction means 15" in an upper horizontal fold region 18, in the typically one not in of the FIG. 5 shown scissors is arranged. The traction means 15 "again consists of two wire ropes 22", analogous to the wire ropes 22 'from FIG. 4 are attached.

It should be noted that the opening width of the casement 4 is then increased when the position of the traction means 15 "moves closer to the hinge side.

It goes without saying that the building closure 1 "off FIG. 5 even without the traction means can be performed on the hinge side, that is, he has only the traction means 15 "has.

In the figures are

1, 1 ', 1 "

building completion

2

frame

3, 3 '

axis of rotation

4

casement

5

filling

6

horizontal frame leg

7

horizontal sash leg

8th

vertical frame leg

9

vertical sash leg

10

closing state

11

fitting element

12

fastener

13

tape

14, 14 ', 14 "

Restraint

15, 15 ', 15 "

traction means

16

Profile chamber frame

17, 17 '

top end

18

folding area

19

Profile chamber wing frame

20, 20 '

lower end

21a, 21b, 21c, 21d

Through opening

21a1, 21a2, 21b1, 21b2

Through opening

22, 22 ', 22 "

Wire rope

23

loop

24

wire rope clip

25

Force application point

26

connecting means

27

Flügelrahmenwandung

28

baseplate

29 _B , 29 _F

attachment point

30

shell

U

scope

V

offset

L

free length

α

angle

I

inner space

Claims (13)

1. A building closure (1, 1', 1") of blast-resistant design, comprising

   - an outer frame (2), which can be connected in a force-transmitting manner to a part of a building by means of at least one fastening element (12) and is composed of a plurality of outer frame members (6, 8) in the form of profiled pieces,

   - a leaf frame (4), which is mounted in the outer frame (2) such that said leaf frame can rotate about at least one rotation axis (3, 3') with the aid of at least one fitting element (11) and is composed of a plurality of leaf frame members (7, 9) in the form of profiled pieces,

   - a panel (5), which is fastened in the leaf frame (4),

   - a retaining device (14, 14', 14") in the form of at least one flexible pulling means (15, 15', 15"), which couples the leaf frame (4) to the outer frame (2) or to a fastening element (12) of the outer frame (2), is connected in a force-transmitting manner to the leaf frame (4) and to the outer frame (2) or to the fastening element (12) of the outer frame (2), and has such a length that the leaf frame (4) can be moved from a closed position (10) to an open position by rotation about the rotation axis (3, 3'), it being possible, if the leaf frame (4) is torn out of the outer frame (2) by a blast, for the leaf frame (4) to be held in a caught position at a defined distance from the outer frame (2) by means of the pulling means (15, 15', 15"), which then transmits a holding force, the pulling means (15, 15', 15") being arranged in a rebate region (18) between the leaf frame (4) and the outer frame (2) such that said pulling means is invisible from outside the building closure (1, 1', 1") when the leaf frame (4) is in the closed position (10),

   characterised in that
   the pulling means (15, 15', 15"), at least in one section, is composed of at least two individual cables (22, 22', 22"), which run adjacently to each other and can be bent independently of each other along a longitudinal axis of the respective cable (22, 22', 22").
2. The building closure (1, 1', 1") according to Claim 1,
   characterised in that
   the section is situated in the rebate region (18) or extends into an interior of at least one frame member (6, 7, 8, 9) in addition to the rebate region (18).
3. The building closure (1, 1', 1") according to Claim 1 or 2,
   characterised in that
   the pulling means (15, 15', 15") is composed over its entire length of at least two individual cables (22, 22', 22"), which run adjacently to each other and can be bent independently of each other along a longitudinal axis of the respective cable (22, 22', 22").
4. The building closure (1) according to any one of Claims 1 to 3,
   characterised in that
   the at least two cables (22) are fed through a common feed-through opening (21a, 21d) in the outer frame (2) and/or through a common feed-through opening (21b, 21c) in the leaf frame (4).
5. The building closure (1', 1") according to any one of Claims 1 to 3,
   characterised in that
   the at least two cables (22', 22") are fed through two different feed-through openings (21a1, 21a2), which are arranged next to each other or one above the other in the outer frame (2), and/or through two different feed-through openings (21b1, 21b2), which are arranged next to each other or one above the other in the leaf frame (4).
6. The building closure (1, 1', 1") according to any one of Claims 1 to 5,
   characterised in that
   the at least two cables (22, 22', 22") are fastened to the outer frame (2) at a common fastening point (29_B) and/or to the leaf frame (4) at a common fastening point (29_F).
7. The building closure according to any one of Claims 1 to 5,
   characterised in that
   the at least two cables are fastened to the outer frame at two different fastening points and/or to the leaf frame at two different fastening points.
8. The building closure (1, 1', 1") according to any one of Claims 1 to 7,
   characterised in that
   the pulling means (15, 15', 15") consists of two cables (22, 22', 22"), each with a diameter of between 2.5 mm and 5.5 mm, preferably of between 3.5 mm and 4.5 mm.
9. The building closure (1, 1', 1") according to any one of Claims 1 to 8,
   characterised in that
   the at least two cables (22, 22', 22") are connected via connecting means (26) at at least one point.
10. The building closure (1) according to any one of Claims 1 to 9,
    characterised in that
    the at least two cables (22) are also connected to the leaf frame (4) inside an associated leaf frame member (9) in a central region of the section.
11. The building closure (1, 1', 1") according to any one of Claims 1 to 10,
    characterised by
    an offset (V), which is present in the closed position (10), between a point (25) at which the pulling means (15, 15', 15") applies force to the outer frame (2) and a point (25) at which the pulling means (15, 15', 15") applies force to the leaf frame (4), wherein, in the closed position (10) thereof, the offset (V) extends in the longitudinal direction of the profiled pieces of the outer frame (2) and of the leaf frame (4) each having a force application point (25).
12. The building closure according to Claim 11,
    characterised in that
    a force application point (25) is formed by a point (29) at which the pulling means (15, 15', 15") is fastened to the outer frame or leaf frame (2, 4) or by the periphery (U) of a feed-through opening (21) through which the pulling means (15, 15', 15") passes into the outer frame or leaf frame (2, 4).
13. The building closure according to any one of Claims 1 to 12,
    characterised in that
    two, three or four pulling means (15") are arranged on the building closure (1"), said pulling means each being situated on different frame members (6, 7, 8, 9).

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