LOCKING DEVICE FOR BUILDING OPENINGS OR ROOMS

Description

FIELD OF THE INVENTION

[0001] The present invention relates to a closure device for building openings or rooms. TECHNICAL BACKGROUND

[0002] Safety doors or safety flaps are used for various applications and are particularly used to protect a separable area from physical influences such as pressure, temperature, water and / or steam.

[0003] Security doors are flat locking devices that can be held in a frame (or casing) and secured in a closed position. Security doors can be designed as fire doors, smoke doors, pressure doors, or similar, forming a pressure-, temperature-, water-, and / or smoke-tight connection with the frame, so that an area separated by the security door can be protected from physical influences. The separable area can be a building or section of a building, or even a single room, for example. Security doors can be single- or double-leaf and are used, for example, in stairwells, utility rooms, or commercial premises.

[0004] Safety flaps are flat closure devices designed, for example, to isolate a shaft or similar. These can serve as fire dampers, smoke dampers, or pressure dampers.

[0005] In order to give the locking devices sufficient stability against physical influences, various layers of fire protection material are usually used, which are arranged in a supporting shell and form the majority of the flat element and thus the door leaf.

[0006] For example, DE 196 25 643 C2 discloses a security door with a surrounding tubular frame. The tubular frame is surrounded by a material that generates a cooling current when exposed to heat. Shell elements are arranged on two sides of the tubular frame to form the door leaf. A heat-resistant material is provided between the shell elements. The locking mechanism is arranged outside the shell elements and is attached to the outside of one shell element using a profile. An area to the side of the profile is filled with insulating material to achieve a flat surface.

[0007] The disadvantages of known locking devices are their high weight due to their multi-layer construction and their comparatively large cross-sectional depth compared to conventional doors. The use of steel plates as the supporting shell creates thermal bridges through the locking device.

[0008] To increase the tightness of the closure devices, seals are proposed in various areas.

[0009] For example, EP 2 633 145 B1 shows a fire door constructed from various insulation layers and fire protection panels with a metal supporting frame. It features several intumescent seals on the frame between the door leaf and the door frame. These intumescent seals seal a gap between the door leaf and the door frame, thus improving the fire door's tightness.

[0010] The disadvantage is that a locking element for locking the door runs through all insulation layers and also contacts the metal support frame within the door leaf. This creates thermal bridges that connect the area to be separated on one side of the door with the area where the heat is generated. Therefore, the seals in the frame area cannot prevent the thermal bridges in the area of ​​the locking element.

[0011] For further prior art, reference is made to DE 25 11 331 A1, DE 3712 592 A1, DE 32 19 225 A1, CN 2168 941 Y, CN 212 562 982 U, DE 26 00 420 A1, DE 25 25 309 A1, CN 106 088 943 A and FR 2 870 880 A1.

[0012] Closure devices can also be designed as pressure doors or pressure flaps. With such designs, there is still the problem that opening the closure device can be made difficult by the pressure applied on only one side, since the closure device must be moved against the direction of the pressure forces when opening.

[0013] If locking devices are designed with double leaves, the aforementioned problems regarding geometric dimensions, tightness and thermal bridges also exist for an inserted central mullion, which serves as a connection between both leaves of the locking device. SUMMARY OF THE INVENTION

[0014] Against this background, the present invention is based on the object of providing an improved closure device.

[0015] According to the invention, this object is achieved by a closure device having the features of patent claim 1.

[0016] Accordingly, the following is provided: A closure device for building openings or rooms, in particular a single- or double-leaf safety flap or safety door for pressure protection, comprising a circumferential tubular frame forming an area enclosed within a first plane, comprising a first plate-shaped element contacting the tubular frame on a first side and delimiting the enclosed area in a direction orthogonal to the first plane, and comprising a locking device arranged within the enclosed and delimited area and extending through at least one recess provided in the tubular frame for locking, wherein a temperature-resistant insulating layer is arranged between the tubular frame and the first plate-shaped element, wherein the tubular frame is formed from a rectangular profile and the first plate-shaped element is fixed to the rectangular profile via two weld seams opposite one another,and the insulating layer is arranged between the two welds.,

[0017] The insight / idea underlying the present invention is that by forming a filling-free cavity to accommodate the locking device, on the one hand, installation space can be saved and, on the other hand, a high level of multifunctionality of a door structure can be achieved.

[0018] Furthermore, the use of seals can provide thermal separation, particularly between the support shell and the locking mechanism, resulting in a reduction of thermal bridges between the two sides of the locking device.

[0019] The idea underlying the present invention is to integrate the locking mechanism into the carrying shell and to ensure the stability of the locking device by means of a surrounding tubular frame.

[0020] Such a locking device makes it possible, for example, to implement a single- or double-leaf security door or flap, which can be designed as a pressure door, fire door, and / or smoke door. The locking device can achieve a high level of water, air, and / or smoke tightness while simultaneously meeting stringent fire protection requirements. Thanks to the surrounding tubular frame and the integrated locking mechanism, the locking device can withstand high compressive forces.

[0021] Furthermore, this advantageously makes it possible to design a double-leaf security door with a central post, whereby locking devices for securing the double-leaf security door can engage in the central post. By using seals on the central post and a corresponding assembly method, a double-leaf locking device can also meet the above-mentioned requirements.

[0022] The closure device is preferably flat and designed as a door element, a gate element, or a flap. A closure device can therefore be understood as a door, a flap, or a gate, in particular a security door, a security gate, or a security flap, preferably a fire door, a fire flap, a fire door, a pressure door, a pressure gate, or a pressure flap.

[0023] The locking device can be arranged at a building opening, allowing a separable area, such as an individual room or a building section, in particular a stairwell or commercial space, to be protected. It can also be used to separate a chamber, such as a security or panic room, safe, or similar.

[0024] The tubular frame can have different configurations; for example, it can have a square or rectangular cavity cross-section. An elliptical or triangular cavity cross-section is also conceivable.

[0025] The tubular frame preferably has a hollow profile with a constant hollow cross-section, at least in sections. The hollow cross-section can also have a constant hollow cross-section all the way around. The sections of the tubular frame, which are preferably arranged at right angles to one another and enclose the enclosed area, can be welded or screwed together.

[0026] In a preferred embodiment, the tubular frame is formed from a box profile, in particular a rectangular one, which in particular has sharp edges rather than rounded ones. Such a sharp-edged profile can be achieved, for example, with a welded profile, in particular a laser-welded profile or a hot-rolled profile. Due to the sharp edges, i.e. edges with a very small radius, the tubular frame can be in almost full-surface contact with the plate-shaped element with an outer surface, which forms the first side. At the sharp edges, the tubular profile can advantageously be welded to the plate-shaped element, wherein conventional fillet welds can be used due to the mutually arranged right-angled surfaces, namely the outer surfaces of the tubular profile and the plate-shaped element.

[0027] The tubular frame and the plate-shaped element are preferably made of steel and can have different thicknesses depending on the structural requirements. The first plate-shaped element can, for example, be covered with a fire protection material in the form of a fire protection board. The fire protection material is preferably arranged on an outer side of the closure device, and thus on a surface of the plate-shaped element that is not connected to the tubular frame.

[0028] The fire protection material can, for example, contain silicate fiber. In particular, the fire protection material can be classified according to DIN EN 13501-1:2010-01 with a fire behavior class of A1. When used, protective boards can be mineral-bonded, dimensionally stable, large-format, and self-supporting.

[0029] The locking device is located within the area enclosed by the tubular frame and is therefore preferably flush with the tubular frame. Since the enclosed area is free of filler material, the locking device can be arranged at any desired position within the enclosed and limited area and can be configured to occupy as much space as desired. For example, it is possible for the locking device within the enclosed area to form a connection across the entire width or entire height to two opposite sections of the tubular frame. Using just one locking device, a so-called double-sided locking can be achieved, for example, without increasing the cross-sectional depth of the closure device.

[0030] To secure the closure device in a closed position, the locking device engages through at least one recess provided in the tubular frame. This allows a connection to a frame that preferably surrounds the closure device. The filling-free cavity allows the locking device to reach any recess arranged on the tubular frame.

[0031] Preferably, the tubular frame forms a type of base frame into which the locking device is integrated. This facilitates assembly and disassembly, since only one component, comprising the tubular frame and the locking device, needs to be replaced.

[0032] The locking device can, for example, be supported against the tubular frame and / or be connected to the first plate-shaped element.

[0033] A temperature-resistant insulating layer is arranged between the tubular frame and the first plate-shaped element. This advantageously enables thermal separation between the supporting shell and the tubular frame. The insulating layer is particularly designed to be highly temperature-resistant, allowing a material difference to be created between the material of the supporting shell and the tubular frame and the insulating layer to create the thermal separation.

[0034] The tubular frame is formed from a rectangular profile, with the first plate-shaped element being fixed to the rectangular profile by two weld seams opposite one another, with the insulating layer arranged between the two weld seams. Advantageously, the rectangular profile is designed as a box profile with sharp edges and can therefore be securely welded to the plate-shaped element using conventional fillet welds. By using a box profile with sharp edges, the insulating layer, in particular, can be formed with a constant thickness over its entire length. Therefore, the only thermal bridges remaining are the weld seams, which, in the form of fillet welds, have a small contact area with the plate-shaped element and the tubular frame.

[0035] With a hinge, particularly a hinged door hinge, which is particularly articulated and comprises two hinges, the locking device can be pressed against the frame, further increasing water, smoke, and air tightness. The hinge can be used for a single-leaf or double-leaf locking device. After closing, the locking device is pressed even closer to the frame without rotation, creating a high preload on the seal and thus improving its tightness.

[0036] Advantageous embodiments and further developments emerge from the further subclaims and from the description with reference to the figures of the drawing.

[0037] According to an advantageous embodiment, at least one opening element can be arranged on a side of the plate-shaped element opposite the tubular frame and can contact the locking device through the plate-shaped element, such that the closure device can be fixed in a closed position by moving the opening element. Advantageously, by actuating the external opening element, the locking device is displaced such that it projects through the recess beyond the tubular frame and can, for example, engage in a casing. The locking device can therefore ensure a connection from the enclosed area inside the tubular frame to an area outside the tubular frame. Advantageously, the entire area in which the locking device is located is covered by the first plate-shaped element.Therefore, the locking device is located entirely behind the carrying tray and is not directly exposed to physical influences such as pressure, temperature, water, and / or steam. The opening element can be designed as a lever or handwheel. In addition to the opening element, a handle can be arranged on the closure device. This handle serves only to pull or open the closure device and has no influence on the locking device with the opening element.

[0038] According to a further development, a second plate-shaped element can contact the tubular frame on a second side opposite the first side and delimit the enclosed area in a direction opposite to the orthogonal direction, such that the tubular frame, the first plate-shaped element, and the second plate-shaped element form a closed cavity for receiving the locking device. In this way, the locking device can be arranged in a completely closed cavity between two supporting shells, namely the first and the second plate-shaped element. A fire protection material, in particular a fire protection board, can be arranged on a surface of each of the two plate-shaped elements, which in each case forms a surface of the closure device. The cavity preferably remains without filler material in this embodiment as well.

[0039] According to one embodiment, the second plate-shaped element for opening the cavity can be pivotally attached to the tubular frame. This advantageously allows for the replacement of individual components of the locking device or the entire locking device without having to disassemble or replace the entire closure device.

[0040] According to an advantageous embodiment, the tubular frame can comprise a tubular profile with a hollow cross-section in which a fire protection material is arranged. This advantageously prevents thermal bridges between the first and second plate-shaped elements. The fire protection material can, for example, comprise a mineral-bonded fire protection board, in particular made of technical calcium silicate.

[0041] According to a preferred embodiment, the tubular frame can form an outer edge of the closure device, in particular a fold, at least in sections. In this way, the locking device, after reaching through the recess in the tubular frame, can directly reach a frame to fix the closure device in a closed position. In this case, the tubular frame can have the largest possible dimension within the closure device, thereby forming the largest possible cavity or enclosed area.

[0042] According to a preferred embodiment, a sealing element that expands, in particular foams, under the action of heat can be arranged on an outer side of the tubular frame and can be contacted with a frame surrounding the closure device for fire-protection sealing. This allows increased fire protection requirements to be met, since the air gap between the outer side of the tubular frame, which in particular forms a rebate, and the door frame with the casing can be dynamically filled with the expanding sealing element when heat is generated. The expanding sealing element can contain a flexible intumescent fire-protection laminate. The expanding sealing element can have a glass fabric as a carrier material and / or contain vermicular graphite that is bound and solidified in a thermally resistant binder.

[0043] According to an advantageous embodiment, the first plate-shaped element can project beyond the tubular frame parallel to the first plane and form a projection on which a sealing element is arranged that expands, in particular foams, when exposed to heat and can be contacted with a frame surrounding the closure device for fire-protection sealing. Advantageously, this allows an air gap between the projection and the frame to be dynamically filled when heat is generated, so that seals arranged behind it, i.e., toward the fold, are protected from heat.

[0044] According to a further development, the fire-protection seal can be provided as a multi-part fire-protection sealing device, wherein the expanding sealing element is covered with a non-combustible, non-expanding sealing layer. In this way, when the expanding sealing element foams, the non-combustible sealing layer is pressed against the frame, in particular the casing, thereby further increasing fire safety. The non-combustible sealing layer can contain a non-combustible fabric seal.

[0045] According to an advantageous embodiment, the insulating layer can contain a glass fiber felt. This is advantageously designed to be highly temperature-resistant. The glass fiber felt can be based on calcium magnesium silicate and / or have thermal and physical stability up to, in particular, 1200°C.

[0046] According to a further advantageous embodiment, the locking device can comprise at least one locking element, a rack coupling the locking element, a gearwheel actuating the rack, and an opening element actuating the gearwheel, so that by actuating, in particular rotating, the opening element, the locking element can be moved within the recess in the tubular frame. As a result, the locking device can be configured to occupy a large area within the closed cavity and reach any desired area of ​​the tubular frame. In particular, the opening element can be arranged at any desired position on the closure device. With such an embodiment, a one-sided locking mechanism can be formed, in particular.

[0047] According to a further development, the locking device can comprise at least two locking elements, two toothed racks coupling the respective locking elements, and a common gearwheel actuating both toothed racks, so that by actuation, in particular rotation, of the opening element, both locking elements can be moved within a respective recess in the tubular frame, wherein in particular the two locking elements engage through the tubular frame in recesses on opposite sides. With such an embodiment, a two-sided locking mechanism can be formed. The locking elements can engage at any height in opposite sides of the tubular frame and be actuated by a common opening-time element.

[0048] According to a further embodiment, an angle profile can be arranged between each rack and each locking element and can transmit force from the rack from a movement plane associated with the rack to the locking element in a movement plane associated with the locking element. The angle profile allows the force from the opening element to be transmitted to any desired plane within the closed cavity or enclosed area, thereby enabling, in particular, the at least one locking element to engage in the tubular frame at any desired positions or planes.

[0049] According to a further embodiment, at least two locking elements, in particular four to eight locking elements, can be provided, wherein all locking elements can be moved by the opening element and the closure device can be fixed in a closed position. This is achieved in particular by a connecting device connecting all locking elements to the opening element. The connecting device can be designed as a toothed rack that connects all gears of the locking device to one another. The opening element can be in contact with only one gear of a locking device in order to effect a force transmission from one gear to the connecting device and subsequently from the connecting device to all other gears.

[0050] In a further embodiment, at least one pressure compensation valve can be arranged in the closure device. The pressure compensation valve preferably has at least one recess that forms a connection from a side without pressure to a side with pressure, wherein the sides are arranged on opposite sides of the planar closure device. Advantageously, a closure element is included that is designed to open and close the recess. In a preferred embodiment of the pressure compensation valve, at least one seal can be arranged between the closure element and the recess.

[0051] A central post for a double-leaf locking device can be provided, wherein such an embodiment does not constitute an embodiment according to the invention, with a profile element for forming a stop for the locking device, which has an inclined support surface, with a fixing device which has an adjustable mounting device for the profile element, and with a mounting element which has an inclined mounting surface corresponding to the support surface, wherein a seal is arranged between the support surface and the mounting surface, to which seal a contact force can be applied via the support surface by adjusting the mounting device and can be supported against the mounting surface.

[0052] The support element can be designed as a wedge. Advantageously, the wedge is firmly connected to the substrate so that the inclined support surface of the profile element can be supported against the corresponding inclined support surface of the support element.

[0053] The fixing device can be designed for positioning and fixing the profile element. The adjustable mounting device can, for example, have connecting means such as screws or bolts that establish a connection between the profile element and the mounting device. The connecting means can, for example, engage in bores in the profile element and in bores in the mounting device. The bores can be designed, at least partially, as elongated holes to achieve the desired positioning.

[0054] The stop can be arranged on the center post on a side opposite the fixing device relative to the profile element. Advantageously, the fixing device with the adjustable mounting device does not affect the area of ​​the stop. Therefore, for example, the sealing in the area of ​​the stop is also not affected by the fixing device.

[0055] The seal can be flush with a front side of the profile element and a front side of the support element, in particular, it can be cut flush with it. Advantageously, this allows the closure device to be in full contact with the profile element, the seal, and the support element over the entire length of the stop. The seal is therefore preferably arranged on a front side of the profile element, so that the seal can also be in contact with the closure device when the closure device is arranged in a closed position. This can further increase the tightness.

[0056] The seal can be arranged at least partially in a recess in the contact surface and / or in a recess in the installation surface. In this way, the seal can be positioned and held in a desired position on the inclined contact surface or the inclined installation surface. By fixing and positioning the profile element by the fixing device, the position of the seal is therefore not influenced or undesirably changed. By being arranged in a recess, the seal is advantageously not excessively pressed by the contact pressure of the contact surface on the installation surface, so that on the one hand the seal retains its shape and on the other hand the contact surface and the installation surface outside the recess can be in full contact.

[0057] The seal can be designed as a double seal and / or have a U-shaped cross-section. This can further enhance the sealing properties.

[0058] An assembly method for assembling a center post, which is not part of the invention, comprises at least the steps of: anchoring the support element in a ground; arranging the profile element such that the inclined support surface of the profile element contacts the corresponding inclined support surface of the support element, wherein, before arranging the profile element, the seal is arranged on the support surface, in a recess in the support surface and / or in a recess in the support surface; fixing the profile element with the fixing device and generating a contact force of the support surface against the seal and against the support surface by means of the adjustable mounting device.

[0059] The seal can be trimmed after the profile element has been secured, ensuring that it sits flush with the front of the profile element. This eliminates the need to precisely adjust the seal to the dimensions of, for example, a recess when installing the profile element with the fixing device. By trimming the seal flush, full-surface contact between the locking device and the stop can be achieved, as already described for the center post. TABLE OF CONTENTS OF THE DRAWING

[0060] The present invention will be explained in more detail below with reference to the exemplary embodiments shown in the schematic figures of the drawing. Particularly relevant is Figur 17 , which shows the features of the characterizing part of claim 1. The figures show: Fig. 1 shows an embodiment of a closure device according to the invention as a cross-sectional view; Fig. 2 shows a further embodiment of a closure device as a cross-sectional view; Fig. 3 shows a further embodiment of a closure device as a cross-sectional view; Fig. 4 shows a closure device according to the invention as a pressure flap; Fig. 5 shows a cross-sectional view along the section plane BB of Fig. 4 ; Fig. 6 a cross-sectional view along the section plane BB from Fig. 7 ; Fig. 7 a locking device according to the invention as a pressure door; Fig. 8 a further cross section through a locking device; Fig. 9 an embodiment of a hinge; Fig. 10 a further embodiment of a hinge; Fig. 11 an embodiment of the locking device with double-sided locking; Fig. 12 a longitudinal section through the embodiment according to Fig. 11 ; Fig. 13 a cross-section through the design according to Fig. 12 ; Fig. 14 a locking device according to the invention with pressure compensation valve; Fig. 15 a partial area of ​​a locking device in a cross-sectional view; Fig. 16 a fire-protection seal in a cross-sectional view; Fig. 17 a welded connection between a tubular frame and a plate-shaped element; Fig. 18 an embodiment of a center post in a cross-sectional view; Fig. 19 a cross-section through a double-leaf door without fire protection; Fig. 20 a further cross-section through a double-leaf door with fire protection.

[0061] The accompanying drawing figures are intended to provide a further understanding of embodiments of the invention. They illustrate embodiments and, in conjunction with the description, serve to explain principles and concepts of the invention.

[0062] The elements of the drawings are not necessarily shown to scale.

[0063] In the figures of the drawing, identical, functionally identical and acting elements, features and components are provided with the same reference symbols, unless otherwise stated. DESCRIPTION OF EMBODIMENTS

[0064] Fig. 1 shows an embodiment of a closure device 1 according to the invention as a cross-sectional view. A circumferential tubular frame 2 is arranged in a first plane E1 and forms an enclosed region 3. A plate-shaped element 4 contacts the tubular frame 2 on a first side, so that the enclosed region 3 is further delimited in a direction R1 orthogonal to the first plane E1. A locking device 5 is arranged within the enclosed region 3, which is also delimited by the first plate-shaped element 4. The locking device 5 engages in a recess 2b arranged in the tubular frame 2. This allows the locking device 5 to reach a frame 18 and thus fix the closure device 1 in a closed position P1.

[0065] In this embodiment, the locking device 5 is formed in two parts, with a horizontal section engaging in the recess 2b and being held centrally in the surrounding tubular frame 2 by a vertical section. In this embodiment, the vertical section is in contact with the first plate-shaped element 4. The enclosed area 3 is accessible from one side (from above in the illustration), so that, for example, the locking element 5 can be operated or replaced from this side.

[0066] In Fig. 2 Another embodiment of a closure device 1 is shown as a cross-sectional view. In contrast to the embodiment according to Fig. 1 A second plate-shaped element 7 is arranged on a second side opposite the first side of the tubular frame 2. As a result, the enclosed area 3 is further limited in a direction R2 opposite to the orthogonal direction R1, so that a closed cavity 8 is formed. The locking device 5 is arranged completely in the closed cavity. The Fig. 1 The vertical section of the locking device 5 described above is designed as an opening element 6 that protrudes through the first plate-shaped element 4. In this embodiment, the locking device 5 can therefore be operated from another side of the closure device 1 (in the illustration, from the lower side). The opening element 6 is shown only schematically and can be designed, for example, as a lever or handwheel.

[0067] A further embodiment of a closure device 1 as a cross-sectional view shows Fig. 3 The second plate-shaped element 7 is pivotally mounted on the tubular frame 2, allowing the cavity 8 to be opened. This allows, for example, the locking device to be replaced or repaired without having to replace the entire closure device 1.

[0068] Fig. 4 shows a closure device 1 according to the invention as a pressure flap. The partially transparent illustration shows the surrounding tubular frame 2 and the locking device 5. The tubular frame 2 forms part of an outer edge 14 of the closure device 1 and serves as a fold 15. The locking device 5 runs transversely within the enclosed area 3 and, in this embodiment, is formed in several parts.

[0069] The pressure flap from Fig. 4 has a one-sided locking mechanism with a locking element 9, which in the form of a bolt extends through the tubular frame 2. The locking element 9 is connected to an angle profile 12, which in turn is contacted by a rack 10. The rack 10 connects the locking element 9 to a gear 11, which is connected to the opening element 6. This allows the force to be transmitted from the opening element 6 to the bolt.

[0070] Fig. 5 shows a cross-sectional view along the section plane BB from Fig. 4 The locking element 9 engages with the frame 18 to fix the locking device in the closed position P1. The angle profile 12 enables force transmission with respect to different planes within the cavity 8. Thus, the angle profile 12 transmits the force from a movement plane B2 assigned to the rack 10 to a movement plane B1 assigned to the locking element 9. The distance between the two movement planes B1, B2 can be influenced via the leg length of the angle profile 12. The angle profile 12 is designed, in particular, as an L-shaped bracket with legs arranged at right angles.

[0071] In this embodiment, the opening element 6 extends through the first plate-shaped element 4 and through the second plate-shaped element 7. As a result, the closure device 1 can be designed with a lever arranged on each side and can be operated from both sides.

[0072] To improve the fire protection properties, the closure device 1 has a fire protection material 13 on the outside of each plate-shaped element 4, 7. This material can be designed as a fire protection construction board. Additionally, a fire protection material 13 is arranged in a cavity cross-section 2a of the raw profile that forms the tubular frame 2. This reduces the thermal bridge between the plate-shaped elements 4, 7, which is created in particular by the tubular frame 2.

[0073] Fig. 6 shows a further cross-sectional view along the section plane BB from Fig. 7 . In Fig. 7 a closure device 1 according to the invention is shown as a pressure door. In contrast to the embodiment according to Fig. 4 The pressure door has three locking devices 5, which are arranged at different heights. All three locking devices 5 can be locked or unlocked by a common opening element 6, as for example with regard to Fig. 11 und Fig. 12 explained in more detail. Unlocking and locking is carried out via an opening element 6, which is shown in the closed position (horizontal position) and in the open position 6'. A handle 30 is also provided to open the pressure door itself. This handle is independent of the locking device 5 and the opening element 6. In the sectional view in Fig. 6 It can be seen that the locking device 5 has a further connecting element 9a, which connects the locking element 9 to the angle profile 12. The connecting element 9a can bridge a distance within the cavity 8 that exists between the locking element 9 and the angle profile 12.

[0074] The locking device 1 according to Fig. 7 further comprises a pressure equalization valve 200. This is Fig. 14 explained in more detail.

[0075] Another cross-section through a locking device is shown Fig. 8 . In contrast to the representation from Fig. 6 The locking device 1 shown has a double-sided lock. This can be seen from the fact that on the left side of the illustration there is another toothed rack 10, another angle profile 12 and another connecting element 9a. These are also actuated via the gear 11. In order to achieve improved water, smoke and air tightness, the locking device 1 has a hinge 100 that forms a connection between the locking device 1 and the frame 18. If the locking device 1 is designed as a security door, the hinge 100 is a door hinge 100a. The hinge 100 serves to press the locking device 1 further towards the frame 18 after closing and until locking. The hinge 100 is not part of the invention.

[0076] Fig. 9 shows two embodiments of a strap 100', in particular from the prior art. These each have only one hinge 22'. The hinge 22' is connected to the closure device 1 by a first tab 29a and to the frame 18 by a second tab 29b.

[0077] After closing and until locking of the closure device 1, no further pushing of the closure device 1 can take place, since there is only one rotation axis r1.

[0078] An embodiment of a band 100 is shown in Fig. 10 shown. The band 100 is not part of the invention. It has two hinges 22a, 22b. The first hinge 22a is connected to the closure device 1 by a first tab 29a. The second hinge 22b is coupled to the frame 18 by a second tab 29b. The two hinges 22a, 22b are coupled via a link 27. This connects the two rotation axes r1, r2. Due to the two laterally offset and coupled rotation axes r1, r2, a rotation-free pressing of the closure device 1 against the frame 18 can be enabled by locking on both sides in a closed position B1. As a result, the closure device 1 is pressed further against the frame 18 between the closing and locking of the closure device 1.

[0079] Fig. 11 shows an embodiment of the closure device 1 with double-sided locking. The locking device 5 has a total of eight locking elements 9, which are arranged on two opposite sides of the tubular frame 2 and protrude from the tubular frame 2 to secure the closure device 1. The eight locking elements 9 can be actuated via a common opening element 6. In this embodiment, this is designed as a handwheel.

[0080] In Fig. 12 is a longitudinal section through the execution according to Fig. 11 shown. Two locking elements 9 are each coupled to a common gear 11. The resulting total of four gears 11 are coupled to one another via a vertically arranged connecting element in the form of a rack 10'. A further gear 11', which represents a connection to the opening element 6, is connected to a gear 11. As a result, by actuating the opening element 6, a force can be transmitted via the gear 11' to the gear 11 (in the illustration the second gear from the top). The force is transmitted to all gears 11 and thus to all locking elements 9 via the connecting element in the form of the vertically arranged rack 10'.

[0081] Another possible cross-section through the execution according to Fig. 12 shows Fig. 13 In this embodiment, a further closed cavity 8' is arranged next to the closed cavity 8, by means of which, for example, the fire protection properties of the closure device 1 can be further increased.

[0082] Fig. 14 shows a locking device 1 according to the invention with a pressure compensation valve 200. In this embodiment, two recesses 23 are arranged in each of the first plate-shaped element 4 and the second plate-shaped element 7, which recesses together form a connection from a side without pressure to a side with pressure of the locking device 1. The two recesses in the first plate-shaped element 4 can be opened and closed via a locking element 24 on the side of the first plate-shaped element 4. Furthermore, a circumferential seal 25 is arranged on the locking element 24, so that the tightness of the locking device 1 is not affected by the pressure compensation valve 200. Before the locking device 1 is to be opened, the recesses 23 of the pressure compensation valve 200 can be opened in order to facilitate opening of the locking device 1.

[0083] Fig. 15 shows a partial area of ​​a locking device 1 in a cross-sectional view. A sealing element 17 that expands when exposed to heat is arranged on an outer side 16 of the tubular frame 2, above and below the locking element 9. When exposed to heat, this sealing element can, for example, foam up and thereby come into contact with the frame 18. The sealing element 17 extends completely around the locking element 9 and along the entire outer side 16 of the tubular frame 2. This allows a fire-protective seal to be formed between the locking device 1 and the frame 18, in particular when the tubular frame 2 forms the fold 15 of the locking device 1.Another sealing element 17, which expands in this way, is arranged on a projection 19 so that the sealing element 17 can close the gap between the projection 19 and the frame 18 when heat develops, thereby protecting the other sealing elements arranged between the two plate-shaped elements 4, 7 from the effects of heat. For this purpose, another expanding sealing element 17 is arranged on the side of the second plate-shaped element 7.

[0084] A fire-protective seal is Fig. 16 shown in a cross-sectional view. The expanding, in particular foaming, sealing element 17 presses a non-combustible, non-expanding sealing layer 20 downward, which can, for example, be supported against a frame 18 or another element of the closure device 1. This allows a gap to be closed.

[0085] Fig. 17 shows a welded connection between a tubular frame 2 and a plate-shaped element 4. A temperature-resistant insulating layer 21 is arranged between the tubular frame 2 and the first plate-shaped element 4. Since the tubular frame 2 is formed from a rectangular profile without rounded edges, the insulating layer 21 can have a constant thickness over its entire length. The insulating layer 21 is arranged between two weld seams 32, which are designed as fillet welds. The pointed edges of the rectangular profile, in particular the box profile, allow the tubular profile 2 to be securely welded to the plate-shaped element 4. The heat transfer from the first plate-shaped element 4 to the tubular frame 2 is thus limited to a minimum, namely to the area of ​​the weld seams 32.

[0086] Fig. 18 shows an embodiment of a center post 300 in a cross-sectional view. The center post 300 is not part of the invention. The center post 300 is designed for a double-leaf closure device 1. A vertically arranged profile element 34 forms a stop 35 for both leaves of the double-leaf closure device 1. The profile element 34 stands with an inclined support surface 36 on a corresponding inclined installation surface 41 of a mounting element 40. Via a fixing device 37 with an adjustable mounting device 39, the profile element 34 is pulled to the left in the illustration and thus pressed against the mounting element 40. A seal 43 is arranged between the support surface 36 and the installation surface 41, to which the contact pressure of the mounting device 39 is transferred. This allows a secure seal to be achieved between the profile element 34, the mounting element 40 and the seal 43.In the illustrated embodiment, the seal 43 is arranged in a recess 42, wherein the recess 42 is present in the support surface 36. Furthermore, the seal 43 has a U-shaped cross-section and can therefore be designed as a type of double seal. When assembling the center post, the seal 43 can be cut flush with the front side 45 of the profile element 34 and the front side 46 of the support element 40 after the profile element 34 has been placed. This always ensures a precisely fitting seal 43. Due to the beveled corresponding surfaces 36, 41, a very high contact pressure can be transferred from the profile element 34 via the seal 43 to the support element 40, thereby improving the sealing properties. In this embodiment, the support element 40 is designed as a type of wedge.

[0087] A cross section through a double-leaf door without fire protection is shown in Fig. 19 shown. In this embodiment, the tubular profile of the tubular frame 2 is designed with rounded edges.

[0088] Fig. 20 shows another cross-section through a double-leaf door with fire protection. In contrast to the illustration according to Fig. 19 The tubular frame 2 is designed as a box profile with pointed edges. This allows the insulation layer 21 to be arranged between the plate-shaped elements 4, 7 and the tubular frame 2, and the tubular frame 2 to be welded to the plate-shaped elements 4, 7. For further details, see Fig. 15 referred to.

[0089] Although the present invention has been fully described above with reference to preferred embodiments, it is not limited thereto. List of reference symbols

[0090] 1Closing device 2Circumferential tubular frame 2aCavity cross-section 2bRecess 3Closed area 4First plate-shaped element 5Locking device 6Opening element 7Second plate-shaped element 8Closed cavity 9Locking element 9aConnecting element 10Tooth rack 11Tooth wheel 12Angle profile 13Fire protection material 14Outer edge of the closing device 15Fold 16Outer side of the tubular frame 17Expanding sealing element 18Frame 19Protrusion 20Non-combustible,non-expanding sealing layer 21 temperature-resistant insulating layer 22 hinge 22a first hinge 22b second hinge 23 recess 24 locking element 25 seal 26 bearing 27 link 28 hinge connection 29 tab 30 handle 31 cover plate 32 weld seam 33 steel sheet 34 profile element 35 stop 36 inclined support surface 37 fixing device 38 base plate 39 mounting device 40 support element 41 corresponding inclined support surface 42 recess 43 seal 44 base 45 front of the profile element 46 front of the support element 100Hinge 100aDoor hinge 200Pressure equalization valve 300Center post B1Movement plane B2Movement plane E1First plane P1Closed position R1Direction R2Direction r1Rotation axis r2Rotation axis

Claims

1. Closing device (1) for building openings or rooms, in particular single or double-leaf safety flap or safety door for pressure lock, having a circumferential tubular frame (2), which forms an enclosed region (3) within a first plane (E1), having a first plate-shaped element (4), which contacts the tubular frame (2) on a first side and delimits the enclosed region (3) in a direction (R1) orthogonal to the first plane (E1), and having a locking device (5), which is arranged within the enclosed and delimited region (3) and for the purpose of locking engages through at least one recess (2b) provided in the tubular frame (2), characterised in that a temperature-resistant insulating layer (21) is arranged between the tubular frame (2) and the first plate-shaped element (4), wherein the tubular frame (2) is formed from a rectangular profile and the first plate-shaped element (4) is fixed via two opposite weld seams (32) on the rectangular profile, and the insulating layer (21) is arranged between the two weld seams (32).

2. Closing device (1) according to claim 1, characterised in that at least one opening element (6) is arranged on the plate-shaped element (4) on a side opposite the tubular frame (2) and contacts the locking device (5) through the plate-shaped element (4) such that the closing device (1) can be fixed in a closed position (P1) by movement of the opening element (6).

3. Closing device (1) according to one of the preceding claims, characterised in that a second plate-shaped element (7) contacts the tubular frame (2) on a second side opposite the first side and delimits the enclosed region (3) in a direction (R2) opposite to the orthogonal direction (R1) such that the tubular frame (2), the first plate-shaped element (4) and the second plate-shaped element (7) form a closed cavity (8) for receiving the locking device (5), wherein in particular the second plate-shaped element (7) is pivotably attached to the tubular frame (2) for opening the cavity (8), and / or in that the tubular frame (2) has a tubular profile with a cavity cross-section (2a), in which a fire protection material (13) is arranged.

4. Closing device (1) according to one of the preceding claims, characterised in that the tubular frame (2) forms an outer edge (14) of the closing device (1), in particular a fold (15), at least in sections.

5. Closing device (1) according to claim 4, characterised in that a sealing element (17) which expands, in particular foams up, due to the effect of heat is arranged on an outer side (16) of the tubular frame (2) and can be contacted for fire-protective sealing against a frame (18) surrounding the closing device.

6. Closing device (1) according to one of the preceding claims, characterised in that the first plate-shaped element (4) projects parallel to the first plane (E1) beyond the tubular frame (2) and forms a projection (19), on which a sealing element (17) which expands, in particular foams up, due to the effect of heat is arranged and can be contacted for fire-protective sealing against a frame (18) surrounding the closing device.

7. Closing device (1) according to claim 5 or 6, characterised in that the fire-protective sealing is provided as a multi-part fire protection sealing device, wherein the expanding sealing element (17) is covered by a non-flammable, nonexpanding sealing layer (20).

8. Closing device (1) according to one of the preceding claims, characterised in that the first plate-shaped element (4) is fixed via two opposite fillet weld seams on the rectangular profile, and the insulating layer (21) contains in particular a fibreglass felt.

9. Closing device (1) according to one of the preceding claims, characterised in that the locking device (5) has at least one locking element (9), a rack (10) coupling the locking element (10), a gearwheel (11) actuating the rack and an opening element (6) actuating the gearwheel, such that by actuating, in particular rotating, the opening element (6), the locking element (9) can be moved within the recess (2b) in the tubular frame (2), or in that the locking device (5) comprises at least two locking elements (9), two racks (10) coupling the respective locking elements and a common gearwheel (11) actuating both racks, such that by actuating, in particular rotating, the opening element (6), both locking elements (9) can be moved respectively within a recess (6) in the tubular frame (2), wherein in particular the two locking elements (9) engage in recesses (2b) on opposite sides through the tubular frame (2), wherein in particular an angle profile (12) is arranged between each rack (10) and each locking element (9) and effects a force transmission of the rack (10) from a plane of movement (B2) associated with the rack (10) to the locking element (9) in a plane of movement (B1) associated with the locking element (9).