DE2625270A1 - FOLDING DOOR - Google Patents

Abstract

Two sheet-metal shells (12, 12') are provided, which are arranged at a spacing from one another and between which fire-retardant material (15) is arranged, these sheet-metal shells being interconnected along their edges. The connection is designed in such a manner that the sheet-metal shells can expand and shorten relative to one another in the case of differing thermal loading. To this end, the sheet-metal shells (12, 12') are provided with circumferential edgings (33, 33') which face one another and end at a spacing from one another. Provided at a spacing from one another are movable connections (16) between the edgings; in this case, these are consequently push-type connections. In order to achieve the necessary coherence, a rigid connection is provided as a fixed point between the edgings in each transverse and longitudinal side, this rigid connection as well as the web parts having the form of half-timbering components. <IMAGE>

Description

Folding gate

The invention relates to a folding door consisting of at least two Gate leaves, each of which has a frame covered with a sheet metal skin, are pivotally connected to each other by dividing bands and of which the one is held rotatably in a wall-side articulation, while on the other a role engaging in a guide is provided, as well as one of the folding door associated actuating device for opening and closing.

In such known folding doors, the actuating devices exist usually from an electromechanical, pneumatic or hydraulic drive, its drive rod via corresponding connecting elements on one of the gate leaves attacks.

The state of the art also includes fire doors that have a Door hinge can be pivoted, as well as fire doors that can be slid on rollers. For Fire doors have precisely defined regulations. For example the Temperature on the cold side of the fire door is 1400C do not exceed if a temperature of more than 90 minutes on the hot side about 1 .ooo0C prevails.

In addition, the fire door must next to this temperature gradient also ensure a prescribed tightness, d. H. despite the different Thermal expansion on the cold and hot side of the door may have specified gap widths are not exceeded (DIN 4102>.

A fire protection door is already known which consists of a frame Has square hollow profiles, on which insulating panels on opposite sides are kept at a distance, which are shod on the outside with sheet metal, the Space between the insulating panels is filled with mineral fiber. Front side are arranged on the sheet metal corner brackets, but to avoid thermal bridges are kept apart by insulating plates. For merging of two abutting sliding gate parts, it is known on one Provide a cup-shaped indentation on the end face, which is located on the opposite side Side is assigned a strip-shaped projection, which is maintained under maintenance a fixed game protrudes into the indentation in the closed position of the gate. In this way, a labyrinth with a high flow resistance is created. In this known fire protection door cover plates are provided on the outside, which in the closed position wall-side sheets are assigned so that also Labyrinths exhibiting high flow resistance can be formed (DT-OS 1 954 555).

The well-known Prandscautzore ripped constantly during the operating hours be kept open, d. H. they only close in the event of fire or at the end of the day. A use in potentially explosive rooms or in rooms in which very rapid combustion processes take place is not permitted.

The design of a fire protection gate as a folding door ### "# 1 W not known.

The object underlying the invention is the folding door of the type mentioned in such a way that it performs a double function can and at the same time serves as a functional gate and as a fire protection gate.

This task is based on the folding door described above Art solved in that two sheet metal shells with surrounding edging as sheet metal skin are provided that end at a distance from each other and by a Connecting plate assembly made of poorly thermally conductive steel are connected, wherein The frame is welded on the inside of one sheet metal shell and from the inside the other sheet metal shell and the connecting sheet metal arrangement through the door leaf interior filling, heat-insulating, non-flammable material is separated.

Chromium-nickel steel is usually used for the connecting plate assembly used. Mineral wool is suitable as a heat-insulating, non-flammable material, Mineral fiber boards or non-combustible insulation boards that can be used as reinforcement made of silicate, asbestos and special # cement (Promabest).

The folding door according to the invention has the advantage that it has the function of a normal gate and at the same time as a fire protection gate in the event of a fire can be used which fully meets the prescribed conditions.

The connecting plate arrangement is expediently at least on the transverse sides and the outer longitudinal sides of the gate leaves U-shaped bevelled and in the edge of the sheet metal shells arranged.

On the opposite end faces in the door closed position the gate wing is advantageously open at least one connecting plate arrangement a fire protection plate with a non-flammable mass that foams when heated arranged. Such fire protection panels, which are also provided as a spread contain natural silicate, which foams at 150 to 2000C, but not combustible foam mass fills the space between the two gate leaves.

Palusol is known as such a fire protection substance.

The gate leaves can be attached to the front side by means of an on the connecting plate arrangement provided metal foil be covered. Aluminum foil is usually used as the metal foil used, which for an even heat distribution and thus an early Foaming ensures.

If on the opposite to each other in the tro closed position Front sides of the gate leaves a connecting sheet metal arrangement that extends over the Has gate-height extending cup-shaped indentation, while the other connecting plate arrangement a hat-shaped bar forms with play in the indentation in the gate closed position engages, one obtains a closing gap that forms a labyrinth and that is high Has flow resistance.

To the different expansion of the sheet metal shells on the hot and the cold side of the folding door is the connection plate arrangement so designed and connected to the sheet metal shells that the sheet metal shells as a result thermal effects are mutually displaceable.

In an advantageous embodiment, there is the connecting plate arrangement from spaced-apart connecting sheet metal webs that connect to the sheet metal shells are connected, at least one fixed point being provided for each transverse or longitudinal side is, in which the relative position of the two sheet metal shells remains fixed to one another.

The fixed point can be determined by two connecting sheet metal webs that fixed with one of its ends in the same place on one sheet metal shell are, while their other ends with the other sheet metal shell at a distance from each other are connected.

This gives a triangular bracing in the fixed point, which at this point a relative displacement of the sheet metal shells against each other is prevented. The fixed point is on the horizon tal upper and lower end faces about in their Provided lying in the middle, while he is on the vertically extending end faces can be provided in the lower third or in the middle area. Usually more room for expansion can be left in the upper area than in the lower area, without affecting the seal.

The connecting sheet metal webs can be pivoted with the sheet metal shells be connected, for example by riveting. However, you can also use the metal bowls be firmly connected, for example by welding, the webs then deform following the different expansion.

In an advantageous embodiment, the connecting sheet metal webs are between double-T-shaped cutouts in one welded to the sheet metal shells formed on the end face circumferential connecting plate, the web of the punching runs essentially in the middle between the sheet metal shells. The crossbeam corresponding punchings run out before the edge of the sheet metal shells. the The ends of the cutouts corresponding to the crossbars run under formation a cross-sectional broadening of the connecting webs formed in between. The fixed point is in this embodiment of three punchings in the form of formed essentially right triangles, the middle one of which is im has substantial vertical hypotenuse, while the hypotenuses of the other two Triangles in Distance from the cathetus of the middle triangle and run essentially parallel to it.

The connecting sheet metal webs can in the area of the indentation of the abutting Gate wing with U-shaped clips and in the area of the bar with U-shaped ribs be reinforced.

In another embodiment of a folding door, there is a connecting plate arrangement from sections divided in the direction of the thickness of the gate, which are bevelled with their End are arranged in the edge of the sheet metal shells and through in relatively large Cross bars arranged at intervals are connected to one another, if necessary with the nlech shells are that there is a gap between the sections.

Because of this distance, heat can only be conducted through the transverse strips made of poorly thermally conductive steel.

The cross bars are usually angle irons. At the points of separation can the horizontal leg of the angle iron of the cup-shaped indentation or the hat-shaped bar be designed accordingly.

To form a fixed point in this embodiment, the vertical legs of two adjacent angle irons arranged facing each other and be connected to each other in a shear-proof manner.

In these embodiments of the folding door leaf, it is assumed that that the torsional stiffness of the wing through the one connected to the sheet metal shell Frame made of thick-walled tubular profiles is achieved, while the Zwette shell over flexible connecting straps are attached. Another option for the wing design consists in the torsional stiffness of the gate wing over an all-round thrust-resistant Connection of the two sheet metal shells to reach. With such a The transverse strips consist of a wavy curved strip made of poorly thermally conductive steel1, for example, chromium-nickel steel, which with the shell-side sections of the connecting plate arrangement by means of hole welding is connected. Get to know about the legs of the wavy shape of the bar be embossed along the entire length of beads. With this embodiment, the #frame profiles connected to the outer shell are not required.

Appropriately, in the two embodiments described above between the sections of the connecting plate arrangement and the transverse strips or the wave-shaped curved bar insulating panels made of a stiffening material used.

In the event of a fire, the fire door must be properly locked to be guaranteed. To achieve this, one of the gate leaves is in the area an essentially vertical locking sleeve is arranged on the door leaf joint connection, with a wall-mounted, vertically displaceable locking bolt in the door closed position is engageable.

The locking sleeve can be in the door leaf hinged on the wall side in one be arranged vertical, consisting of a hollow profile frame part.

In the locking sleeve, against a spring preload voltage of the locking bolt displaceable rod are arranged, which is attached to a rotary bolt is articulated so that it is attached to a vertical movement of the rod by one on the frame part mounted horizontal pivot axis in the engagement position in an anchored in the ground Lock bushing and pivotable from this position into the interior of the frame part is.

The locking bolt is fixed to the piston rod of a wall-mounted one Lock cylinder attached. The fact that the rotary latch is spoon-shaped it removes any dirt that may have accumulated in the locking sleeve by itself.

Since the locking of the folding door is only required in the event of fire and the wings expand upwards and downwards as a result of the heat, the following additional locking options result.

In one embodiment, in the guide diaphragm over the whole Door width formed a groove that is slightly wider than the leaf thickness itself has upwardly tapering flanks and for the sealing engagement with-the Upper side of the wing due to the vertical thermal expansion of the wings in the event of fire is provided. In the event of a fire, the wings, which expand upwards, run into the groove and get stuck there. This gives an excellent seal between the top edge of the wing and the guide panel and an excellent bracket the wing over the entire width without the need for mechanically moving parts are. There is another possibility of locking on the upper side of the wing by means of a locking bolt that is permanently welded to the guide panel, which is in normal operation is arranged at a vertical distance from the upper side of the wing, and by a wing-side Lock sleeve, in which the locking bolt in the event of fire due to the vertical thermal Extension of the wings engages. The locking sleeve can with the one described above Mechanism for operating a rotating bolt may be provided. When exposed to heat stretch the gate wing up over the locking bolt, this then presses the opposite a spring preload displaceable rod downwards and thereby brings the rotary bolt with the locking sleeve in engagement.

In the same way, a pin can be provided on the bottom side, which arranged in normal operation at a vertical distance from the underside of the wing and the one with a wing-side socket due to the vertical thermal expansion the wing intervenes in the event of a fire.

Another possibility of locking on the underside of the wing is that a about a horizontal pivot axis in the engaged position with a locking sleeve on the bottom and pivotable out of this position Rotary latch is provided on which a substantially horizontal rod of a Engages piston, which is arranged displaceably in a fixed wing cylinder.

The piston in the cylinder is in this case by an existing in the cylinder, in the event of fire, the foaming mass can be moved. Such a locking system is expedient built in at the bottom of the gate in the breakdown at a point to which the heat in the Can advance quickly and unhindered in the event of a fire.

To achieve the required seal, a stationary, frame arranged over the entire height of the door on the side of the dividing band at, which has protruding webs towards the gate leaf and in the area of the wall-side Articulation is arranged, which is curved by a gate leaf fixed, frame side Cover surrounded is, with in the door closed position between the webs of the frame and the gate leaf as well as the curved part of the cover labyrinth seals are formed.

The web of the frame associated with the curved part of the cover points advantageously an inner leg parallel to the gate wing, the in the gate closing position of the legs of an L-shaped, attached to the gate leaf Bracket opposite. This arrangement prevents the fingers from being pinched The gate cannot be closed.

A guide panel with the guide is advantageously on the ceiling side for the role of the gate leaf and provided with an insulating plate on which a substantially U-shaped profile part is attached, which with horizontal flanges ends with the formation of a gap over the upper edges of the sheet metal shells.

By additional ones assigned to the gate leaf surfaces in the closed position Labyrinth seals that foam with a heat build-up, one not Flammable mass-forming covering can be provided, the waterproofing will continue improved. Such labyrinth seals can, for example, between the outer surface a sheet metal shell and a wall part pulled down from the ceiling; seen will.

In an advantageous embodiment, there are two foldable double doors arranged, on the opposite in the gate closed position Front sides of the gate leaves a connecting sheet metal arrangement that extends over the Has gate-height extending cup-shaped indentation, while the other connecting plate arrangement a hat-shaped bar forms that with a lot of play in the indentation in the gate closed position intervenes.

The connecting sheet metal webs can be in the area of the indentation Reinforced by U-shaped clasps and in the area of the groin by U-shaped ribs become, as is the case with the gate leaves connected by the dividing bands Case is.

In the area of the adjoining middle gate wing is on the floor side a guide shoe is arranged which has outwardly diverging guide surfaces. This means that when the middle leaf of the two foldable double doors is brought together a linear movement guaranteed.

Such a folding door is from one on the upper Führb lende fixed electrohydropneumatic drive via drive rods and serrated levers closed when a solenoid valve is commanded by a trip system Immediately in front of the valve is a compressed air reservoir in the vicinity of the door the line installed, which is secured via a non-return valve, the corresponding Keeps the amount of compressed air ready to allow the door to close safely even in the event of a power failure guaranteed. When closing, the lower ends of the inner wings of both move The sides into the guide shoe attached to the floor. There is a hydraulic one Damping provided together with a mechanically activated pressure reducing valve, which ensures that in an area of about 500 mm between the closing ones Wings the closing force is so low that they are not endangered by them can. As soon as the gate leaves have reached the closed position, another Valve actuated, whereby two arranged vertically on the guide plate Cylinder the two pairs of wings in the breakdown mechanically with the guide screen be locked. At the same time actuated the pressed down by the bolt Rod, which is built into each of the outer wings on the wall side, the shovel-shaped one Quarter-turn, which engages in the lock socket fixed in the floor and the both pairs of wings locked. This lock can be unlocked from the outside when operating the folding door as a functional door, the lock in the partition is not necessary. The valves are normally open, so that even in the event of a power failure reliable closing of the folding door is guaranteed.

The folding door described above can be used in the absence of requirements as a functional door also as a pure fire protection door in the same way as previously only Sliding or roller gates on the market can be used. The electrohydropneumatic The drive and the control are replaced by a closing aid, which is relative is easy.

The folding door according to the invention is usually always stationary during operation open and is controlled by a combined smoke and heat-sensitive stop held. In the event of a fire, the folding door closes hydraulically via two flange-mounted dampened gas springs and locks itself mechanically.

As a variant, the gate can also be operated in such a way that it is constantly is closed and only open in rare cases, at the combined smoking and heat-sensitive locking devices are applied and closed again after passing through will.

In a further variant, the folding door is constantly in operation open, whereby the wings are mutually locked by magnetic gate feeders. When it is closed, the door is closed and locked by hand like a normal door. Only in the event of a fire does the folding door close via two flanged pneumatic cylinders and so locks itself; active mechanically. The compressed air comes from an emergency propellant, the one from a small compressed air cylinder with a high Pressure, a pressure reducing valve and a directional control valve, which, as with the automatic fire protection folding door from the electronic fire alarm system receives the closing impulse.

With reference to the accompanying drawings, the invention is exemplified explained in more detail.

Fig. 1 shows a front view of an embodiment of a folding door with two double wings.

FIG. 2 is a section along the line II-II of FIG. 1.

FIG. 3 is a section along the line III-III of FIG. 1.

FIG. 4 shows, corresponding to FIG. 3, a further sectional view of the folding door.

Fig. 5 shows the connecting plate arrangement schematically.

Fig. 6 shows a practical embodiment of the connecting plate arrangement.

FIG. 7 shows a further possibility in a view like FIG. 3 the door locking in case of fire.

FIG. 8 shows schematically in a detail of FIG. 7 the underside of the wing Locking.

Fig. 9 shows in detail a locking option on the top of the wing.

Fig. 1o shows in detail a locking option on the underside of the wing.

11 shows a further variant of the connecting plate arrangement in cross section.

Fig. 12 shows in detail part of the connecting plate assembly of Fig. 11 in side view.

13 shows a connecting plate arrangement in a side view with a wavy curved bar.

FIG. 14 shows a cross section through the arrangement of FIG. 13.

Fig. 15 is a section through the wavy curved bar.

The folding door shown in FIG. 1 has four door leaves 41, 42, 43 and 44. The wings 41 and 42 are, as can be seen from Fig. 2, by a dividing band 17 articulated together. In the same way, the wings 43 and 44 are with one another tied together. The outer wing 41 is like the wing 44 by means of an upper Linkage 4 and a lower linkage 7 set on the wall side. In the middle of A bracket 5 is provided in line with the hinges at the gate height. The upper one An actuating device 45 is assigned to the articulation 4. The middle gate wing 42 and 43 have guide roller on the top in the area of their inner ends 1, which are guided in a straight guide panel 1o.

As can be seen in particular from Figures 2 to 4, each consists Gate wing made of a first sheet metal shell 12 with a circumferential edge 33 and from an opposing sheet metal shell 12 'with a circumferential one Edging 33 '. On the inside of the sheet metal shell 12, the frame hollow profiles 11 are welded, from the inside of the opposite sheet metal shell 12 'through an insulating material 15 are separated in the form of mineral wool (Sillatherm). The circumferential front sides the gate leaves are connected to one another by a connecting plate arrangement 16, the folds 36 which sit within the folds 33 and 33 '. at the connecting plate assembly 16 is essentially one with holes provided, poorly thermally conductive sheet steel, for example a chrome-nickel steel sheet. In the area of the dividing bands 17 as well as in the joint area of the inner ones The gate leaf is the one connecting sheet metal arrangement as a cup-shaped indentation 48 formed, the hat-shaped on the opposite side of the other gate wing Bar 49 is assigned, with play in the indentation 48 in the closed position the gate wing engages. This game is dimensioned so that in the event of fire a thermal Expansion is possible and at the same time a labyrinth with high flow resistance is formed in order to restrict the gas penetration. In the area of the cup-shaped Indentation 48 has the U-shaped bent connection arrangement 16 on the legs Flanges 37, respectively with the folds 33. 33 'are connected. For reinforcement 16 U-shaped reinforcing ribs can be installed behind the strip 49 on the connecting plate arrangement 14 and behind the indentations 48 U-shaped bent clips 14 'are provided, which are shown in dashed lines in FIG. The sheet metal with holes Existing connecting plate arrangement 16 can be covered with aluminum foil 19 In addition, on the connecting plate assemblies 16, in particular in the area of Labyrinths between the indentations 48 and the strips 49 a foaming fire protection material 18 be applied that contains sodium silicate, which at 150 to 2000C below Formation of a non-flammable sealing compound foams (Palusol). The from the Bar 49 enclosed interior as well as the two corner rooms between the indentation 48 and the sheet metal shells 12 and 12 'are with stiffening Insulation panels made of a non-flammable building material made of silicate, asbestos and speci 1 cement, whereby this building material can be processed in a similar way to wood (Promabest). These insulating plates 13 can also be on the inner sides of the Frame profiles 11 are applied.

From Fig. 2 it can also be seen that in the area of the wall-side Articulation is provided over the door height extending frame 20, which for Gate wing 41 (or 44) has protruding webs So, which in the closed position of the gate with the sheet metal shell 12 'form a labyrinth seal. The linkage 7 is enclosed by a cover 38, which has an insulating plate 13 on the Sheet metal shell 12 is attached. The cover 38 has an inwardly curved shape Leg 51 of the frame 2c a circularly curved part 39, whereby a flawless Pivoting of the leaf 41 about the articulation 7 is guaranteed without any danger consists that one is between the frame 20 and the part 39 of the cover 38 the Pinch fingers. In Fig. 2, the holder 5 shown in Fig. 1 is in the The door closed position is shown in which it lies opposite the leg 51 within the frame 20. The articulation 7 and the holder 5 are with by the connecting plate arrangement 16 through parts attached to a frame profile 11. The breakdown ribbons 17 are assigned to the vertical frame profiles 11. In the area of the middle gate wing 42 and 43, a guide shoe 9 is provided at their joint on the floor, the inlet side has surfaces 52 converging from the outside to the inside.

From Fig. 4, the arrangement of the guide panel 10 on a wall lintel 46 recognizable. In addition, the guidance and attachment of the guide roller is schematic 1 shown. At the Guide plate lo is over an insulating plate 13 attached a smoke cover 21 which is U-shaped in cross section and ends in legs 40 which form a flow resistance reducing Gap over the folds 33 and 33 'of the sheet metal shells 12 or

12 'ends. Profiles 22 are attached to the lintel 46, which together with the outside of the sheet metal shell 12; form labyrinth seals, with corresponding Share foaming fire protection material 18 can be provided.

In Fig. 3 is one of the locking devices for locking the Folding door shown in the event of a fire. Above the guide panel 1o is on the wall lintel 46 a locking cylinder 2 is attached to the piston rod via a bolt lock 26 one extending through the guide screen 1o and the smoke cover 21 Lock bolt 27 is attached. The locking bolt is opposite a top and bottom open vertical frame profile 11 arranged in which a locking sleeve 3 in alignment to the locking bolt 27 is arranged. In the locking sleeve 3 sits a rod 23 which is biased into the position shown in FIG. 3 by a helical spring 24. The rod 23 is articulated via a joint 29 to a rotary bolt 8, which is around a on the frame profile 11 seated pivot axis 30 is pivotable.

The rotary bolt 8, which is designed in the form of a shovel, has one in the base 47 provided locking sleeve 28 assigned. Upon actuation of the bolt cylinder 2 is the locking bolt 27 is inserted into the locking sleeve 3. The locking bolt presses 27 the rod 23 down, whereby the rotary latch 8 is pivoted so that it engages in the bottom locking sleeve 28, possibly in the locking sleeve 28 accumulated dirt is removed automatically and together with the locking bolt 27 locks the door in the closed position. By a device not shown the locking bolt 27 can be unlocked by hand. The rotary bolt 8 is then through the restoring forces acting on the rod 23 the spring 24 in moved back to the starting position SO that the folding door can be opened again. In the locking bolt 27, a spring-loaded locking bolt is provided, which extends as soon as the locking bolt 27 has reached the lower end position. He also prevents them Spring-loaded piston rod of the wall-mounted locking cylinder 2 and thus the locking bolt 27 snaps back when the compressed air drops, which the locking bolt 27 over has brought the locking cylinder 2 into engagement. Only after loosening the locking bolt the gate can be opened again. This is why the gate can also be locked only take place in the event of fire, d. H. the control is designed so that the locking cylinder 2 is only actuated when the door is triggered by the fire detector, namely an electronic one Fire alarm system with highly sensitive heat and smoke sensors, is closed. The closing impulse given by the fire detector is superimposed on all other control impulses.

As can be seen from Figures 5 and 6, the connecting plate assembly 16 be designed so that in the event of fire due to the different thermal Action on the sheet metal shells move the sheet metal shells 12 and 12 'relative to one another can. As shown schematically in FIG. 5, this is achieved in that the connecting plate arrangement consists of sheet metal webs 16, which the edge 33 and 33 'of the sheet metal shells 12 and 12' connect with each other, the connection points 53 can be designed as joints or welds by means of rivets. In the first case, the connecting sheet metal webs 16 are movable. In the latter case will be they with a relative movement of the sheet metal shells 12 and 12 'as a result of thermal effects bent. The sheet metal shells 12 and 12 'are mutually through at one point a so-called fixed point 6 is fixed to one another, as can be seen from FIG is, the fixed point 6 at the transverse end faces approximately in the middle and with those running in the vertical direction Front sides, for example, on one Thirds of the height measured from the floor are provided. As can be seen from Fig. 5, this fixed point 6 consists of two connecting sheet metal webs 16 ', which with one End at a point on the #lechschale 12 'while they are with their other ends are attached at a distance to the Bledhschalp 12, preferably to the End points of horizontal connecting sheet metal webs 16 between the connecting sheet metal webs 161 included angles is approximately 900 in the embodiment shown.

In Fig. 6 is a practical implementation of the tie plate assembly 16 shown In this embodiment, a connecting sheet metal strip is shown in the figures 2 to 4 shown the way the sheet metal shells 12 and 121 with their edges 33 and 335 assigned. The connecting sheet metal strip has double-T-shaped cutouts, whereby the web runs approximately in the middle of the connecting plate arrangement 16 in the longitudinal direction, while the bars extend transversely thereto and in the area of the folds 33 and 33 are bent inward, so that the formed between the bars of the punchings Connecting sheet metal webs 16 in the area of the folds 33 and 33 'have an enlarged cross-section exhibit. In this practical version, the fixed point is achieved by that a first, substantially right-angled triangle 54 is punched out, the Hypotenuse runs parallel to the edge 33. Adjacent to this right-angled Triangle 54, two more right triangles 55 and 56 are punched out, with the hypotenuses of these triangles 55 and 56 parallel at a distance from the cathetus of the central triangle 54 are arranged, whereby the inclined webs 16 ' are formed while between the transversely extending cathets of triangles 55 and 56 and the adjacent double-T-shaped cutouts that run transversely Web 16 are formed.

In the embodiment of FIGS. 7 and 8, the upper guide panel is lo set lower than the embodiment shown in FIG. 3, for example at a distance of 10 mm from the upper edge of the sash. In the guide diaphragm lo is one Continuous groove 60 formed over the entire width of the door, which is open at the bottom, is slightly wider than the gate leaf thickness and has flanks 61 that follow taper at the top. In the event of a fire, the upward expanding wings run into the Groove 60 and wedge there, creating an excellent seal between Upper edge of the wing and the guide panel lo as well as a good holding of the wing over the entire width is achieved without the need for mechanically moving parts are.

The variant shown on the underside of the wing is As in the embodiment of FIG. 3, a rotary latch 8 is provided which is arranged around a horizontal Pivot axis 30 into an engagement position in a bottom locking bush 28 is pivotable and can be moved out of this position. this happens Via a rod 62 which engages a joint 29 on the rotary bolt 8. The pole 62 ends in a piston 63 which is movably guided in a cylinder 64. By doing The cylinder 64 is on the opposite side of the piston 63 from the rod 62 with heat foaming mass provided. This locking system can be used in the breakdown be installed at the bottom of the door at a point that can quickly reach the heat in the event of a fire and can advance unhindered.

In the variant shown in FIG. 9, in contrast to the embodiment 3 of the locking bolt 27 attached to the guide panel lo, the locking bolt 27 in the wing opposite a locking sleeve 3 is arranged, which is shown in Fig. 3 shown actuating mechanism for a rotary latch can be assigned. the shown in Fig. 3 Smoke sealing is missing, instead it is Guide panel pulled down so that it can normally be pivoted properly the gate wing is possible.

When exposed to heat, the gate leaves expand upwards over the locking bolt 27. This then presses the rod 23 in the bolt in the manner already described sleeve 3 for actuating the rotating bolt downwards.

In the variant shown in Fig. Lo is in the bottom of the gate leaf a sleeve 66 is arranged, which in the closed position of the gate a opposed to the ground pin 67, between the pin 67 and the bottom the gate leaf a distance is provided that a proper pivoting of the Gate wing in normal operation. The cones are in the ground in the area of the divisions intended. In the event of a fire, the wings expand downwards, so that the pin 67 and sleeve 66 engage and form a lock.

In the embodiment shown in FIGS. 11 and 12, there is the connecting plate arrangement 16 of two sections, of which one section 74 of the sheet metal shell 12 and the other section 74 'of the sheet metal shell 12' is assigned. In Figures 11 and 12 is this connecting plate arrangement 16 in the area on the partition side with a pot-shaped indentation and a hat-shaped projection shown. The section 74 lies with its fold 36 within the fold 33 of the sheet metal shell 12, the section 74 'with its fold 36' in the fold 33 'of the sheet metal shell 12 '. The sections 74 and 74 'end in the middle with the formation of a distance 75. This Distance is fixed by transverse strips 70 or 70 ', which are on the inside of the sections 74 and 74 'are welded on. The cross bars consist of angle iron from one poorly thermally conductive material, such as stainless steel, and have a vertical Leg 72 and a horizontal leg 73. The transverse strips 70, 70 ' are arranged at relatively large distances from one another. As can be seen from FIG is, a fixed point 6 can be achieved that the facing each other vertical leg 72 of the transverse bar 70 or 70 'by a plate 71 in a shear-proof manner be connected to each other. The arrangement of the cross bars in the area of the hat-shaped The bar of FIG. 11 corresponds to that of the cup-shaped indentation.

There are stiffening insulating plates in the manner described above 13 arranged.

In the embodiment shown in FIGS. 13 to 15 the transverse strips 70, 70 'shown in Figures 11 and 12 by a continuous wave-shaped curved bar 76 made of poorly thermally conductive material, for example Chrome-nickel steel, replaced. The bar 76 is with the bevels 36 and 36 'of the Sections 74, 74 'are connected by plug welds 77. The legs of this bar contain embossed beads 78 over the entire length to provide a higher compressive rigidity to reach.

In the embodiment shown, the torsional stiffness the gate leaf via an all-round shear-proof connection of the two sheet metal shells 12, 12 'reached, the frame profiles 11 shown in Fig. 2 can be omitted.

Claims (41)

CLAIMS 1. Folding gate, consisting of at least two gate leaves that each have a frame covered with a sheet metal skin, through with one another Divider bands are pivotably connected and one of which is in one Wall-side articulation is held rotatably, while on the other one in a standing side guide engaging role is provided, as well as from one of the folding door associated actuating device for opening and closing, thereby g e k It is noted that the sheet metal skin is two sheet metal shells (12, 12 ') with a circumferential Edges (33, 33 ') are provided, the end faces at a distance from one another ends and by a connecting plate arrangement (16, 16 ') made of poorly thermally conductive Steel are connected, with the frame on the inside of a sheet metal shell (12 ') (11) welded on and from the inside of the other sheet metal shell (12) and the connecting sheet metal arrangement (16, 16 ') through the door leaf interior filling, heat-insulating, non-combustible Material (13, 15) is separated. 2. Folding door according to claim 1, characterized in that g e k e n n z e i c h n e t, that the connecting baw arrangement (16, 16 ') at least on the transverse sides and the Outer longitudinal sides of the gate leaves (41 to 44) folded in a U-shape and in the edge (33, 33 ') of the sheet metal shells (12, 12') is arranged. 3. Folding door according to claim 1 or 2, characterized in 9 e k e n n -Z e i c h N e t that the gate leaves (41 to 44) on the front side by a on the conn (1ungsblechanordnuflg (16) provided metal foil (13) are covered. 4. Folding door according to one of the preceding claims, characterized g e k It is noted that at least on each other in the gate closed position opposite end faces of the gate leaves (41 to 44) on at least one connecting plate arrangement (16) a fire protection material with a non-flammable mass that foams when heated is upset. 5. Folding door according to one of the preceding claims, characterized in that g e k It is noted that on the opposite sides in the door closed position End faces of the gate leaves (41 to 44) which have a connecting arrangement (16) over the gate height extending top £ förrttige indentation (48), while the Another connecting plate arrangement (16) forms a hat-shaped strip (49), which with Play engages in the indentation (oe) in the gate closed position. 6, folding door according to one of the preceding claims, characterized in that that the connecting sheet metal arrangement (16, 16 ') is designed and connected to the sheet metal shells (12, 12 ') is connected so that the sheet metal shells as a result of thermal action are displaceable to each other. 7. Folding door according to claim 6, characterized in that g e k e n n -z e i c h n e t, that the prevention plate arrangement consists of connecting plate webs arranged at a distance from one another (16), which are connected to the sheet metal shells (~ 2, 12 ') push-fit, whereby at least each transverse or. A fixed point (6) is provided on the long side, in which the relative position of the two sheet metal shells (12, 12 ') remains fixed to one another. 8. Folding door according to claim 7, characterized in that g e k e n n -z e i c h n e t that the fixed point (6) is determined by two connecting sheet metal webs (16 '), the fixed with their one ends at the same point on one sheet metal shell (12 ') are, while their other ends with the other sheet metal shell (12) at a distance from each other are connected. 9. Folding door according to claim 7 or 8, characterized in that it g e lt e n n -z e i c h n e t that the fixed point (6) is provided lying approximately in the middle of the transverse sides is. lo. Folding door according to one of Claims 7 to 9, characterized in that it is not z a i c h n e t that the fixed point (6) at the long sides eW1anuf an Erittel the length from below ge # '## ssen or three middle areas is provided lying. 11. Folding door according to one of claims 7 to 10, characterized g e k e n n z e i c ii n e t that the connecting sheet metal webs (16, 16 ') with the sheet metal shells (12, 12 ') are pivotably connected (53). 12. Folding door according to one of claims 7 to lo, characterized in that it applies n z e i c h n e t that the connecting sheet metal webs (16, 16 ') with the sheet metal shells (12, 12 ') are firmly connected. 13. Folding door according to claim 12, characterized in that it is n n -z e i c h n e t that the connecting sheet metal webs (16) between double-T-shaped cutouts in a connecting plate that runs around the end and is welded to the sheet metal shells (12, 12 ') are formed, wherein the web of the punchings is substantially in the middle runs between the flat shells (12, 12 '). 14. Folding door according to claim 13, characterized in that it is e n n -z e i c h n e t that the cut-outs corresponding to the crossbeams in front of the timed edge (33, 33 ') of the metal shells (12, 12') run out. 15. Folding door according to claim 14, characterized in that it is n n -z e i c h n e t that the ends of the cutouts corresponding to the crossbeams are formed a cross-sectional broadening of the connecting webs (16) formed in between diverge. 16. Folding door according to one of claims 13 to 15, characterized in that it applies n z e i c h n e t that the fixed point (6) is made up of three punchings in the form of im essential right triangles (54, 55, 56) is formed, of which the the middle (54) has a hypotenuse essentially parallel to the edge (33), while the Ilypotenuses of the other two triangles (55, 56) are at a distance from the Cathets of the central triangle (54) and run essentially parallel to it, so that inclined connecting webs (16 ') are formed between them. 17. Folding door according to one of claims 5 to 15, characterized in that g e k e n n shows that the connecting sheet metal webs (16) in the area of the indentation (48) by U-shaped clips (14 ') and in the area of the bar (49) by U-shaped ribs (14) are reinforced. 18. Folding door according to one of claims 1 to lo, thereby g e lt e n n z e i c h n e t that the connecting plate arrangement (16) from in the direction of thickness of the gate divided sections (74, 74 '), which with their beveled ends (36, 36 ') are arranged in the edge (33, 33') of the sheet metal shells (12, 12 ') and by means of transverse strips (70, 70 ') arranged at relatively large intervals so with one another are connected that between the sections (74, 74 ') there is a distance (75) is. 19. Folding door according to claim 18, characterized in that it is n -z e i c h n e t that the transverse strips (70, 70 ') are angle irons. 20. Folding door according to claim 19, characterized in that there is no e n n -z e i c h n e t that the horizontal leg (73) of the angle iron of the cup-shaped indentation (48) and the hat-shaped strip (49) is designed accordingly. 21. Folding door according to one of claims 18 to 20, characterized in that it is not z e i c h n e t that to form a fixed point (6) the vertical legs (72) of two adjacent angle irons assigned to one another, aligned and shear-proof are connected to each other (71). 22. Folding door according to claim 18, characterized in that it is e k e n n -z e i c h n e t that the transverse strips from a wavy curved strip (76) from bad consist of thermally conductive steel, which with the shell-side parts (36, 36 ') of the connecting plate arrangement (16) forming sections (74, 74 ') by means of hole tears (77) is connected. 23. Folding door according to claim 22, characterized in that it is n -z e i c h n e t that in the legs of the wave-shaped curved bar (76) over the entire length Beads (78) are embossed. 24. Folding door according to one of claims 18 to 23, characterized g e k e n It is indicated that the sheet metal shell (12) is free of frame profiles. 25. Folding door according to one of claims 18 to 24, characterized g e k e n n z e i c h n e t that between the sections (74, 74 ') of the connecting plate arrangement (16) and the transverse strips (70, 70 ') or the undulating curved strip (76) stiffening plates (13) made of heat-insulating material are used. 26. Folding door according to one of the preceding claims, characterized g e It is not possible to say that on one of the gate leaves (41, 44) in the area of the articulated connection (17) a substantially vertical locking sleeve (3) is arranged between the door leaves is, with which a wall-mounted, vertically displaceable locking bolt (27) in the door closed position is engageable. 27. Folding door according to claim 26, characterized in that it is n -z e i c h n e t that the locking sleeve (3) in the door leaf hinged on the wall side (41, 44) in one vertical frame hollow profile (11) is arranged. 28. Folding door according to claim 28, characterized in that it is n -z e i c h n e t that in the locking sleeve (3) one against a spring tension (24) from the locking bolt (27) displaceable rod (23) is arranged, which is articulated on a rotary bolt (8) is that this with a vertical movement of the rod (23) by one on the frame part (11) fixed horizontal pivot axis (30) in the engaged position in a locking sleeve (28) anchored in the ground and from this position into the interior of the frame hollow profile (11) is pivotable. 29. Folding door according to one of claims 26 to 28, characterized g e k e n nz e i c h n e t that the locking bolt (27) on the piston rod of a wall-mounted Lock cylinder (22) is attached. 30. Folding door according to one of claims 1 to 25, g e -k e n n z e i c h n e t through one formed in the guide panel (lo) over the entire width of the door Groove (wo), which is slightly wider than the wing thickness, tapering towards the top Has flanks (61) and for the sealing engagement with the wing top due to the vertical thermal expansion of the wings in the event of fire is. 31. Folding door according to one of claims 1 to 25, g e -k e n n z e i c h n e t by means of a locking bolt that is permanently welded to the guide panel (10) (27), which is arranged at a vertical distance from the top of the wing during normal operation is, and through a sash-side locking sleeve (3), into which the locking bolt in the event of fire (27) engages due to the vertical thermal expansion of the wings. 32. Folding door according to one of claims 1 to 25, g e -k e n n z e i c h n e t by a bottom pin (67), which in normal operation in a vertical Distance from the wing underside is arranged and for engagement with a wing-side sleeve (66) due to the vertical thermal expansion of the wings is provided in the event of fire. 33. Folding door according to one of claims 1 to 25, g e -k e n n z e i c h n e t by one about a horizontal pivot axis (30) into the engagement position with a locking sleeve (28) fixed to the floor and pivotable out of this position Rotary latch (8) on which a substantially horizontal rod (62) of a piston (63) engages, which is arranged displaceably in a cylinder (64) fixed to the wing. 34. Folding door according to claim 33, characterized in that it is n -z e i c h n e t that the piston (63) in the cylinder (64) by an existing in the cylinder, im In the event of a fire, the foaming mass (65) can be moved. 35. Folding door according to one of the preceding claims, g e k e n n z e i c h n e t through a stationary, extending over the entire height of the gate on the side of the The frame (20) extending to the partition strips (17) and the frame (20) protruding towards the gate wing (41) Has webs (50) and is arranged in the area of the articulation (7) on the wall, which are surrounded by a cover (38, 39) that is fixed to the gate and is curved on the side of the frame is, wherein in the door closed position between the webs (50) of the frame and the Gate wing (41) and the curved part (39) of the cover (38) labyrinth seals are formed. 36. Folding door according to claim 35, characterized in that it is g e k e n n -z e 1 c h n e t , da3 the web (50) associated with the curved part (39) of the cover (38) Frame (20) has an inner leg (51) parallel to the door leaf surface, the in the gate closed position of the legs of an L-shaped, attached to the gate wing (41) Holder (5) is opposite. 37. Folding door according to one of the preceding claims, g e k e n n z e i c h n e t through a ceiling-side guide panel (lo) with the guide for the Roll (1) of the gate leaf (42, 43) and with an insulating plate (13) on which an im essential U-shaped profile part (21) is attached, which with horizontal flanges (40) with the formation of a gap over the upper edges (33, 33 ') of the sheet metal shells (12, 12 ') ends. 38. Folding door according to one of the preceding claims, g e k e n n z e i c h n e r by additional ones assigned to the gate leaf surfaces in the closed position Labyrinth seals (22), which with a foaming, non-flammable mass-forming covering (18) can be provided, 39. Folding door after One of the preceding claims, g e k e n n z e i c h n e t by two foldable Double gates (41, 42; 43, 44), with the opposite in the gate closed position The end faces of the gate leaves (42, 43) have a connecting plate arrangement (16) has cup-shaped indentation (48) extending over the height of the gate, while the other connecting plate arrangement (16) forms a hat-shaped strip (49) which engages with play in the indentation (48) in the gate closed position. 40. Folding door according to claim 39, characterized in that it is n -z e i c h n e t that the connecting sheet metal webs (16) in the area of the indentation (38) by U-shaped Clasps (14 ') and reinforced in the area of the bar (39) by U-shaped ribs (14) are. 41. Folding door according to one of claims 39 or 40, g e k e n n z e i c h n e t through a bottom-side, in the area of the adjoining gate leaves (42, 43) arranged guide shoe (9) with outwardly diverging guide surfaces (52).