EP3156102B1 - Fire protection closure device and method for rolling up a rollable material - Google Patents

Description

The present invention relates to a fire protection closure device according to the preamble of claims 1 and 14. The invention also relates to a suitable method according to the preamble of claim 15.

In other words, the invention further develops a closure device that includes a material that can be wound onto a shaft, that can assume a wound up state and an at least partially unwound state, and that serves as a fire protection curtain. A fire protection closure of a building opening can be formed by an arrangement of the material that can be wound up by means of a suitable method.

State of the art

A closure arrangement, which should be suitable for an opening in a building, among other things, is disclosed in the utility model DE 20 2006 019 609 U1 (Owner: REHAU AG + Co.; Registration date: April 30, 2008 ) described. A front blind is used as a closure, which has at least one rotatable deflection element with the aid of a transport element according to figure 1 the DE 20 2006 019 609 U1 can be a gear, is guided. The winding element should be arranged at a distance from the deflection element. An electric motor can be arranged for support in the deflection element designed as a hollow shaft. However, the arrangement should essentially only prevent the incidence of light at a predetermined angle and is therefore not suitable for closing an opening.

The utility model DE 295 21 561 U1 (owner: Weinhuber, K.; registration date: 09.10.1997 ) provides a closing or separating device, whereby a web of material can be wound up from both ends by two parallel rods, each provided with a pulling element. If the device is in front of an opening, the opening can only be partially cleared.

A roller shutter is in the patent DE 42 27 328 C1 (owner: Adolf Seuster GmbH; date of issue: October 7, 1993 ) described. The roller door has a pair of vertically positioned roller tubes, with one roller tube standing on each side of the door. In one embodiment, the pair of winding tubes should be able to be driven by a separate motor via a toothed belt and deflection gear. Between the two parts of the two sides too closing gate, an at least partially permeable scratch can remain.

In the patent CH 503 884 (Owner: Griesser AG; Date of publication: April 15, 1971 ) describes a roller shutter that can be wound up onto two winding rollers that are drive-connected to one another and are fixed to one another. The smallest possible diameter of the rollers is limited by the articulated bars or slats that form the roller shutter. There are usually gaps between the bars or slats. With conventional locking installations of roller shutters, e.g. B. in residential buildings, it can be assumed that these spaces should allow air exchange between an interior and an exterior space. Due to the mobility of the rods or slats relative to each other, there is a risk that they will jam when the roller shutter is lowered and the roller shutter cannot be fully unrolled.

A roller shutter in which the rollers are arranged adjustable or adjustable at a distance from one another is in the patent and utility model application DE 1 849 457 (applicant: WR Maas and RN Maas; publication date: 05.04.1962 ) The adjustability should be realized by several bearing bores or bearing shells with adjustable distances to accommodate shaft journals.

one to CH 503 884 very similar embodiment of a roller shutter element is from the utility model DE 20 2011 052 483 U1 out. A guide for the roller shutter on the roller shutter shaft is intended to prevent the roller shutter from slipping on the roller shutter shaft. Of particular interest is the description of the DE 20 2011 052 483 U1 a shaped body made of heat-insulating material for receiving the roller shutter element.

A space-saving roller shutter with a structure similar to that DE 20 2011 052 483 U1 is in the Swiss patent specification CH 625 311 A5 (Owner: Planya AG, published on September 15, 1981 ) described. An installation of a roller shutter from individual interconnected strips, in which the incidence of daylight should be affected as little as possible, in the form of an elongated winding is shown in EP 0 155 659 A2 (applicant: Abito Finanz- und Handelsgesellschaft AG, published on September 25, 1985 ). A roller blind that can be wound up over two waves of equal size is disclosed in FR 2 935 423 A1 (Applicant: Juan Louis; published 03/05/2010 ).

In many known fire protection devices such. B. from the disclosure document DE 10 2012 000 116 A1 (applicant: BSM Brandschutz-Manufaktur Deutschland GmbH; disclosure date: July 11, 2013 ) shows a winding of a flexible protective element on a arranged single winding shaft, which can be correspondingly bulky.

The fire protection device according to the utility model specification DE 203 10 017 U1 (Owner: BS Brandschutztore GmbH & Co. KG; Registration date: 04.11.2004 ) stipulates that the curtain is to be wound up on a roller that can be moved in the vertical direction. The winding device comprises a belt shaft which extends parallel to the winding shaft and is fixedly arranged in the vertical direction. Disadvantages can arise from the space required by the winding roll because the entire winding roll has to be lowered into or in front of a building opening.

The patent specification DE 698 31 044 T2 (owner: AP Cooper; date of publication: 04/07/1999 ) relates to a fire-retardant curtain. One part of the curtain is to be wound onto a first roll and another part onto a second roll. Both parts of the curtain are joined at the end with an end bar. Already in an earlier patent application GB 2 108 839 A (publication date: 05/25/1983 ) of the same applicant was in accordance with an embodiment figure 5 describes an arrangement of a fire curtain with a division, wherein the curtain parts are to be wound on different shafts. Due to the division of the curtain is to be feared that in a connection area of the curtain parts leaks, z. B. by wrinkling can arise.

Another two-role concept is discussed in the international patent application WO 2010/142 944 A1 (owner: COOPERS FIRE LIMITED; date of publication: December 16, 2010 ) described. As figure 1 the WO 2010/142 944 A1 Figure 12 shows a parallel arrangement of two corrugations with a curtain arranged in alternating segments on the first and second corrugations, each with areas of overlap. A special mechanism keeps the waves at a suitable distance, depending on how the curtain is rolled up. A similar arrangement of two shafts as in the WO 2010/142 944 A1 is in the pamphlet EP 1 749 963 A2 (Applicant: D. Antoniazzi; Publication date: 07.02.2007 ) has been used for awnings. Problems with synchronizing the two shafts can lead to folds in multi-part curtains, so that the curtain parts do not fit tightly together. It is to be feared that the closure will remain incomplete in the connection areas.

The patent application US 2006/0 151 132 A1 (Applicant: A. Scalfani et al.; Disclosure date: 07/13/2006 ) relates to a hurricane protection curtain. In one embodiment, the curtain comprises a first and a second curtain rod. The second rod is provided to improve stability. In addition, the curtain material can be wound up tighter with the help of the second rod, so that the curtain can be pulled under a decorative jewelry bar fits. It should be possible to pull the curtain between the two rods or through the first rod. The two curtain rods can possibly be rotatable. Winding appears to be provided on only one of the rods in the embodiments shown. It is wound by hand. Some users may find the installation of the installation kit and the winding of the curtain tedious.

From the disclosure document DE 23 60 063 A1 (applicant D. Rau; disclosure date: June 5, 1975 ) the use of a roller shutter box is known, which also has plastic parts in addition to metal parts, so that a flow of heat or cold through the roller shutter box is interrupted.

In the German Offenlegungsschrift DE 38 10 064 A1 (Applicant: Michael Wild; published on October 5, 1989 ) a mini slat roller shutter is presented, which has a deflection roller and a lower roller arranged parallel thereto. The roller shutter curtain is deflected over the deflection roller and pulled down to the lower roller. Advantage should be a low depth construction.

Various aspects relating to structural fire protection, which provide important information in particular for the design of a closure such as a roller shutter, are discussed e.g. B. from the standards DIN EN 1634-1, DIN EN 1634-3 and DIN EN 13501-2.

task

When erecting or modernizing buildings, it has often turned out to be desirable in interested circles to have a closure device for fire protection available which takes up the smallest possible proportion of the interior of the building. In other words, a space available for the installation of the closure device should be better, in particular more efficiently, usable, so that z. B. unwanted compromises for fire protection can be avoided as far as possible. According to a further aspect, the closing device is intended to enable a building opening assigned to the closing device to be closed as quickly as possible, in particular reliably and safely. The object is also to provide a fire protection closure device and an associated winding method that winds up and unwinds a fire protection curtain or enables it to be wound up and unwound in a way that is easy on bearings and at the same time with advantageous roller geometry.

invention description

The object of the invention is achieved by a fire protection closure device according to claim 1 and by a fire protection closure device according to claim 14; a suitable method for rolling up a windable material can be found in claim 15. Advantageous developments can be found in the dependent claims.

The fire protection closure device is provided for a structure, in particular for an opening in or on a structure. As a building z. B. buildings into consideration, in which people or animals can stay. The closure device comprises a material which can be wound up and which can be used to form a closure. The rollable material is a fire curtain. A radius of curvature of the rollable material can be accommodated by an elastic flexibility of the rollable material. The windability of the material makes it possible to design the closure device in a particularly space-saving manner. The closure can be formed by a curtain or by a roller blind, each of which includes material that can be wound up, e.g. B. when the opening is a window opening or a passage. It is possible to envisage the closure device as a roller shutter. A roller door is used to close an opening in a building, such as a portal, as required. With a roller door, the z. B. comprises two gate leaves, each gate leaf can have its own locking device. Closing devices can be used for buildings such as listed buildings or special buildings such as check-in halls at train stations, ports or airports, e.g. B. to close entrances, entrances, exits or passages. It can also be said that a space divider can be formed by the closure device. Due to the low mass to be moved compared to a solid door, a closure device with material that can be wound up can be closed particularly quickly and also opened quickly. The closure device preferably provides protection against the spread of flame, heat or smoke.

A fire protection curtain has a fire protection classification specified in relevant standards. With suitable fire protection materials, there is often a need to use a greater material thickness of a fire protection curtain, so that a higher protective effect of the fire protection curtain is achieved. As a result, the closure device also takes up more space. A fire protection closure device includes a fire protection curtain. The fire protection curtain is rolled up in a first state, the open state. The windable material of the fire curtain lies rolled up. The windable material is preferably storable in the opened state for a plurality of years without deterioration in windability. In the event of a fire, a building opening can be closed in a few seconds, such as less than 60 seconds, with a fire protection closure device. A second state is a locked state. In the occluded state, the rollable material is spread out. In an operating state of the closure device, at least part of the material that can be wound up is conveyed through or over the building opening. It can also be said that the structural opening is filled or covered. According to a further aspect, the structure opening can be released in an operating state.

The device has a coil spread, preferably an at least bidirectional coil spread. The closure device includes a coilable material. The windable material is adoptable in a wound condition and an unwound condition. A first portion of the material may be in a coiled condition and a second portion of the material may be in an unwound condition. In the wound-up state, the material that can be wound up surrounds the winding spread, preferably in at least two layers.

It can also be said that the winding spread dictates or limits a winding core that deviates from a circular shape in a cross section along a width of the windable material. The shape of a wound state can thus be adapted particularly well to spatial requirements.

The closure device can be installed in a building during a construction phase or subsequently as an installation kit. It is Z. B. possible to accommodate the closure device at least partially in a suspended ceiling. The space between a building ceiling and a false ceiling is often cramped, e.g. B. because it was built to save as much space as possible or because other installations, such as cable harnesses or ventilation shafts, are located above the suspended ceiling. A geometrically adaptable or geometrically adapted closure device can be used particularly advantageously. A winding technique that saves space at least in one spatial dimension is preferably used for the windable material of the closure device. Rewindable material may be in a wound condition as a roll. The material that can be wound up can be unwound from the roll. Material unwound from a roll may also be referred to as rewindable material in an unwound state. In other words, the coilable material can assume two states, with some material being coiled and some material being unwound. The two material states can continuously merge into each other, e.g. B. when windable material is pulled onto a roll. In view of the existence of a single roll, a wound state can also be referred to as a rolled-up state. An unwound state that starts from a single roll can also be referred to as an unwound state. In the unwound state, the material that can be wound up can be brought out into an opening, the opening being at least partially closable. The opening can e.g. B. be a ceiling opening of a building. The locking device is particularly suitable for openings in sloping walls. It is possible to use a closure device to divide the room, with a first room in the building being able to be separated from a second room in the building to protect against the effects of a fire.

In one method, a wrappable material of a closure device is rolled up. The windable material can also be referred to as a windable material. By rolling up, an unwound state is brought at least partially into a wound-up state. Material that is in the form of a roll can be drawn out by the action of gravity or by a drive acting on an end portion of the coilable material. In an unwound state, the material that can be wound extends in relation to the structural opening in such a way that the structural opening can be covered. The windable material can extend into the structure opening. A total length of a windable material allows z. B. form a curtain closure or a gate, which preferably extends over the entire building opening. In other words, the structural opening can be closed by material that can be wound. When being rolled up, at least part of the windable material runs through a first deflection on a shaft and a second deflection on a winding spread. The first deflection and the second deflection preferably follow the same direction of rotation. Like a spiral, the windable material surrounds a shaft and the winding spread. The wound material is piled up spirally. The arrangement is spiral. One can also speak of an arrangement as a spiral. The spiral is a trigonally deformed spiral. According to a further aspect, the material is wound in a more space-saving manner in at least one dimension than with known closure devices.

Unless otherwise stated, advantageous refinements and developments are presented below which, viewed individually, both individually and in combination, can also reveal inventive aspects.

In one aspect of the invention, the closure device comprises a shaft. The shaft provides a winding core for windable material. According to a further aspect of the invention in addition to a first shaft, at least one further shaft, such as a second shaft, is provided.

A winding spread is arranged next to the shaft. The reel spread, according to one aspect of the invention, provides a reel core extension for reelable material. The winding spread and the shaft together form a winding core that is expanded in at least one direction. Referring to the shaft, it can be said that the windable material can be passed around part of a circumference of the shaft. An analogous consideration applies to the winding spread and in particular to possible further waves, such as a second or third wave. The winding spread is arranged parallel and spaced from the shaft. The winding spread follows an alignment of the shaft, so that one can speak of a parallel arrangement. A parallel-type spacing is also present when an axis extending parallel to the shaft can be assigned to the angular spread as a design aid. In other words, the shaft and the winding spread have a predetermined distance from one another. Mutually associated end regions of the winding spread and the shaft can be arranged next to one another, with a lateral end spacing being the same. A length of the shaft is preferably greater than a winding width of the windable material. The lap spread may include a plurality of lap spread segments. Winding spread segments may be spaced apart along a line.

In the wound state, the winding spread and the shaft are together wound with windable material. The wrappable material may form a wrap around the wrap spread and the shaft along a length of the shaft. In the wound-up state, the windable material can preferably be in multiple layers, such as at least two layers. In the wound state, at least a first layer of the windable material is at the shaft and at the winding spread. A further wound-up layer, such as a second layer of the material which can be wound up, can follow the first layer. The first layer of the windable material in the wound state can face both the shaft and the winding spread on a first side. Material that can be wound up can be placed on a second side of the first layer to form the wound up state.

The shafts may comprise a shaft material such as steel, light metal such as aluminum or brass, plastic, hardwood, or a composite material. A non-combustible fabric is suitable as the material that can be wound up.

A single array of wrappable material is formed along the wrap spread and shaft. The arrangement is spiral. One can also speak of an arrangement as a spiral. A spiral is a geometric shape made up of a successive wrapping of a core by a flat material. The spiral can be seen at a material edge along a longitudinal extension of the windable material, in particular if a view of a shaft end area is enabled. In other words, an extension of wrappable material as a single spiral means that there is no first part of the wrappable material as a first spiral and no second part of the wrappable material as a second spiral around a shaft. Connection or synchronization problems that could result from joining together pieces of windable material, each in a spiral form, do not arise because a single spiral is to be wound.

The windable material can be brought into a single roll via the winding spread and the shaft. The material can be stored as a roll. A self-contained gate or a self-contained curtain can preferably be formed from a spiral-like arrangement of the roll material. A space cross-section provided for the role of the closure device in the structure can deviate from a circular disk or from a square and the space cross-section can still be efficiently filled. The weight of the material that can be wound is distributed over at least one shaft and the winding spread, so that a roll that is several meters long in particular sags less. The material can be wound more evenly and is subjected to less mechanical stress. The windable material is less tense during winding.

It is possible to consider a shaft, in particular a shaft that is segmented in a longitudinal direction, as part of a winding spread.

An advantageous embodiment of a closure device provides that the shaft is a first shaft and the winding spread is a second shaft. The waves can be of the same length. Material that can be wound up can be brought into a single roll by the closing device. A roll comprises at least one layer of material that can be wound up. The first shaft and the second shaft extend in an inner region of the roller. A roller cross-section formed by at least two shafts enables a limited space in the building to be filled up better by the roller and an even more increased stability of the closure device.

The lap spread may include a plurality of lap spread segments. Winding spread segments may be spaced apart along a line. A shaft can comprise a plurality of shaft segments which preferably connect to one another. In this way, among other things, a total mass of the closure device can be reduced. Installation work in a confined space of a building relieved.

The closure device has a winding device. Windable material can be caught up by the winding device. Winded-up material can be deployed from the winding device into the building opening. The winding device comprises at least one shaft and preferably a drive device for the shaft. A rotation of the shaft can be brought about by the drive device. A first shaft rotation may correspond to conveying windable material in a first direction, e.g. B. out of the building opening, where the material is taken together as a role. A second shaft rotation in the opposite direction to the first direction of rotation of the shaft can transport material present as a roll into the building opening. Coiled material is in a hollow cylindrical configuration around the shafts. The edge area of the material is on side surfaces that can be assigned geometrically to a single cylinder outside of a lateral surface, namely the base surface and the vertical surface. The width of the windable material can be referred to as cylinder height. The spiral-like structure of the roll can be seen in an end area of the material assigned to the width. The spiral is a deformed spiral. A deformed spiral is a spiral that has a constant pitch but whose core or evolute deviates from circular symmetry. A constant pitch is known from the mathematically idealized shape of an Archimedean spiral that starts from a point. A deviation is considered to be a dimension in comparison to a circular shape that is larger, preferably at least twice larger or four times larger than a thickness of the windable material. The spiral resembles the appearance of an involute. The thickness of the windable material preferably forms the winding spacing, so that the windable material adjoins one another in layers. An ovoid deformed spiral, which is not part of the invention, is when a core has an underlying cross-sectional structure e.g. B. has two convexly oriented semicircles, which are connected by two, each on the circumference, in particular parallel to each other arranged straight lines. The first semicircle can be assigned to the shaft and the second semicircle to the winding spread. If the first semicircle has a smaller radius than the second semicircle, a trigonally deformed spiral can be formed. A trigonally deformed spiral can also be formed according to a further independent aspect of the invention by using two or three shafts for the windable material. In the case of a combination of several corrugations, the windable material encloses the corrugations in roll form like a multi-sided deformed spiral. Thus, a shell shape of the role is particularly favorable to an available space z. B. is specified by a niche, in particular a crooked niche, on a building support or a lintel and a ceiling or a wall, adaptable.

There is preferably an intermediate region between the winding spread and the shaft. The intermediate area is a free space area. There is no windable material in the intermediate area. The shaft is located on a first side of the intermediate region. The winding spread is arranged on a second side of the intermediate area. The intermediate area between the winding spread and the shaft is at least large enough so that shaft rotation is not impeded. By rotating the shaft and in particular the winding spread, material that can be wound up can be brought to at least one other side that can be assigned to the intermediate region as a boundary. It can also be said that in a roll at least two sides of the intermediate area are bounded by windable material. An imaginary connection curve can be drawn through the free intermediate area in an area of the width of the windable material from the winding spread to the shaft without crossing windable material. The intermediate area is in an outer area of the shaft, it being possible for the shaft to be in the form of a hollow shaft. The winding spread can extend, in particular in the manner of a comb, in the intermediate region.

The shaft is installed in the closure device, preferably at a fixed distance, opposite the winding spread. The shafts can be rotated particularly well if they are each rotatably mounted on two pivot bearings. A first pivot bearing is associated with the shaft. A second pivot bearing can be assigned to the winding spread. A bracket, such as a bracket plate or a frame side plate, can extend between the first pivot bearing and the second pivot bearing, which fixes the position of the pivot bearings in relation to one another. A first axis of rotation, which extends inside the shaft, is assigned to the shaft. A second axis of rotation, which extends inside the winding spread, is assigned to the winding spread. A pivot axis connects two first bearings and two second bearings together. The shaft can be connected to the winding spread in such a way that only the same direction of rotation of the shaft about the first axis of rotation and the winding spread about the second axis of rotation is possible. In other words, either the winding spread and the shaft rotate clockwise or counterclockwise. When using a plurality of shafts, all shafts preferably have the same direction of rotation.

At least one of the shafts and/or the at least one winding spread is/are connected to at least one motor. The motor can be a bearing of a shaft. The motor provides bi-directional drive, with a first direction causing winding rotation and a second direction causing unwinding rotation of the shaft. An electric motor drive is preferably carried out by an electric motor built into the shaft. The electric motor can be driven by a switchable current, in particular via a current regulator. Through The use of electrical energy causes a mechanical movement. An electric motor enables shaft rotation to be started quickly and a direction of rotation to be changed quickly, so that a wound state or an unwound state of the windable material can be assumed very quickly. Further embodiments have a compressed air motor or a hydraulic motor as the motor, in particular if there is a corresponding pressure medium supply in the building. The engine can e.g. B. drive at least one pulley or at least one gear. It is possible to operate at least two motors with one, in particular electronic, rotation synchronization.

It is possible to provide an outer diameter of the shaft that is different compared to an outer diameter of the winding spread. With the help of the selected outside diameter, the force to be applied to the windable material during winding can be dissipated particularly favorably to the bearings. Different outside diameters, such as a first outside diameter and a larger second outside diameter, particularly when using two or more shafts, can serve to form an advantageous roller geometry.

A rotation of the shaft and a rotation of the winding spread can be synchronized with one another particularly precisely if a motor drive is transmitted from the shaft to the winding spread or vice versa, depending on the arrangement of the motor drive on the shaft or the winding spread. A rotation can be imparted via a drive belt. As an alternative, the roll spreading can include a motor drive. The drive belt is arranged in such a way that it connects the shaft and the winding spread with each other. Preferably, the power transmission belt encircles the shaft and the winding spread. The shaft can be composed of several waves. The drive belt can rest on at least one pulley which is firmly connected to the shaft. An example of a power transmission belt is a flat belt. It is also possible to provide a peripheral, preferably step-structured shape, such as a groove shape, which has at least one depression, for the drive belt on one or possibly on several shafts. A static friction can thus be increased. In a particularly space-saving embodiment, the drive belt can run in a recess on the shaft and in a recess on the winding spread, in particular on a second shaft. A plurality of drive belts may be arranged along a length of the shaft, e.g. B. with a distance of at least ten centimeters (cm) between two transmission belts. This results in a particularly even distribution of force between the shaft and the winding spread. The power transmission belt has a first surface facing the shafts. A second surface of the drive belt facing away from the corrugations can form a bearing surface for the windable material. In other words, the power transmission belt can be a carrier for windable material. Preferably, the windable material surrounds the shaft and the winding spread at a distance. The distance can be predetermined by a thickness of the drive belt and a belt pulley or gear wheel revolution size. In this way, fretting of the windable material, e.g. B. by dust or sand grains, are kept as low as possible.

A plurality of gear wheels can be arranged on a shaft. Pulleys can be used as an alternative to gears. A toothed wheel, which in particular guides a belt laterally, can also be referred to as a belt pulley. At least two gears are preferably located along a length of the shaft. The gears on a shaft are at a fixed distance from one another. A winding spread can include at least one gear wheel. A gear or pulley may be rotatably mounted on a wrap-spreading segment. The arrangement can e.g. B. be chainsaw-like. A first gear on the shaft and a second gear located on or on the winding spread form a group, the gears being spaced from each other. A circulating drive belt, such as a toothed belt or a circulating chain, preferably extends between the grouped gear wheels. A toothed belt has a particularly smooth surface for supporting the material that can be wound up. A drive belt, such as a toothed belt, preferably includes an embedded tension cord, which usually consists of glass or aramid fibers or steel cables. One tooth side of the toothed belt is preferably made of abrasion-resistant fabric in order to protect the teeth, which are made of elastomer, from wear. A drive belt, z. B. include a fiber-reinforced plastic or fiber-reinforced rubber. A drive belt runs very quietly.

The windable material has at least one end portion that extends along a length of the shaft. The end area can be connected to at least one toothed belt. In other words, a pulling force or a pushing force can be applied to the end area of the material that can be wound up by the toothed belt. A first toothed belt can, for. B. parallel to a second toothed belt at a distance of at least 10 cm, preferably 1 m. The toothed belt has z. B. a width of 1 cm. The toothed belt has teeth for engagement of the first gear wheel and the second gear wheel. The use of a chain is advantageous when the material that can be wound up is particularly heavy. The chain is preferably made of steel. The gears are preferably circular. The gears on the shaft each have a matching first diameter. The first diameter is preferably a maximum diameter. The first diameter can also be a shaft diameter. The gears that go to Belong winding spread, have the same second diameter. The second diameter is preferably a maximum diameter. The second diameter can also be a diameter of the second shaft. A first maximum diameter and a second maximum diameter of the gear wheels preferably differ. Due to the selected gear wheel diameter, among other things, a spiral deformation of the windable material in the wound state can deviate from the spiral around an oval spiral core.

The shaft and winding spread may be supported as a pair assembly. A pair assembly is moveable as a unit. If there are two or more waves, one can also speak of a group arrangement in the same sense. One possibility of movement of the pair arrangement is a pivoting movement. A pivoting movement is made possible in that the pair arrangement about an axis which z. B. along or through one of the existing shafts can be tilted. A rotatability of the pair arrangement is preferably limited by a fixed stop. This facilitates assembly of the locking device. The paired arrangement can also be fixed at a predeterminable angle. For example, the angle is B. fixable in relation to an extension of coilable material in the unwound state. It is also possible to provide for a mounted pair arrangement to be rotatable through a predeterminable angle. A rotation angle can e.g. B. be 45 ° or 90 °. The angle of rotation can also be referred to as the tilt angle, in particular if a full rotation cannot be performed. After setting the angle, the pair arrangement, z. B. on a bracket, in particular on a frame side plate, attached or locked. The bracket permanently preserves the angular position of the pair arrangement. The pair arrangement is z. B. adjustable from a horizontal position to a vertical position when a mounting location z. B. under a building ceiling only has a sufficient mounting space for a vertical position of the closure device.

According to a further aspect, the winding spread is in an angular position in relation to a mounting surface, e.g. B. on a building, analogous to the pair arrangement described above can be brought. By being able to adjust an angular position of the winding spread, a running plane of one or more toothed belts can be aligned. In other words, a running plane of the spiral arrangement of the fire protection curtain can be tilted into a desired position. A running plane is a plane in which the windable material extends without deflection in a deformed spiral. A deformed spiral can also be referred to as a spiral stretched in one spatial direction, such as a first spatial direction. The deformed spiral has a smaller extent in a second spatial direction than in the first spatial direction. Here, the spiral is considered up to the line where the material that can be wound up lies on top of one another in at least two layers. A difference in extent resulting from a thickness of the windable material is not taken into account. It can also be said that the extended fire curtain is not part of the geometry of the spiral. Tilting can be done at the assembly site. A first angular position can be converted into a second angular position by tilting. The winding spread can be adjusted on a holder, such as a tilting device, which enables tilting, particularly when the fire protection closure device is in a mounted state, starting from a preassembled state, in particular to a desired angular position and preferably to a desired spread width.

In a space-saving arrangement, a material that can be rolled up, which is provided as a fire protection curtain, is preferably stacked up at least in regions without gaps. A space-saving arrangement forms z. B. in a cuboid void volume with three unequal side lengths from a smaller free space than in a cuboid volume with the same first and second side length, wherein a third side length is arranged along a width of the windable material. The side lengths can generally be assigned to a spatial dimension. At least one dimension is a preferred direction in space, particularly in terms of mobility. The angular position can be an orientation of the wound-up material in relation to the first or in relation to the second side length or side of the empty volume, in particular if more than six side surfaces can be assigned to the empty volume. The term space-saving deformation can mean, among other things, that when the arrangement is assumed, a deformation, in particular an elastic deformation, of the material that can be wound up takes place as the winding spreads around. One possibility of deformation is a stretching of a surface, with the stretching being located in a deflection area of the windable material, in particular gradually through a material thickness.

Spreading struts, such as pipe segments that z. B. are made up of at least two mutually fixable strut parts, present in a winding spread. A position or length of partial struts can advantageously be adapted to one another on a longitudinal axis. In order to facilitate the tilting, a counter bearing, in particular with a radial angle graduation, and a locking device can be present. The counter bearing or the locking device can each be fastened to the frame or to the stabilizing strut or to the spreading strut. The locking device defines an angular position of the winding spread at least for the operating time of the winding device. A selected angle of the winding spread is z. B. based on a frame can be fixed. A particularly precise adjustment of the winding spread to an installation space is thus possible.

The winding core can with respect to its position in space, z. B. in relation to an axis formed by a perpendicular as a reference. An extension of the winding core in at least one direction can be adjusted. In view of the fact that the winding core is not defined by a single filling or space-limiting solid shape, the winding core can also be referred to as a gap or free volume that is located in a core area of a roll or roll of the windable material.

In a particularly advantageous embodiment of a fire protection closure, a winding expansion can comprise at least one stabilizing strut and at least two, preferably at least four, expansion struts. A stabilizing brace may be part of the wrap spread. The stabilizing strut serves, among other things, to counteract sagging of elastic, windable material, in particular in a wound state, such as a roll. An elastic material can e.g. B. form a wave or loop-like fold under the action of a narrow-sided shearing force, which can be smoothed out again, in particular without the shearing force. Supported by the stabilizing strut, the fire protection curtain remains as smooth and flat as possible across the width of the curtain.

At least one stabilizing strut or at least one of the spreading struts can hold a drive device, such as a motor, in particular an electric motor, or a drive wheel, which is used to drive the material that can be wound up. The winding spread can include a toothed belt, an impeller or a belt pulley or a gear wheel, which can be present individually or in multiples to support the windable material or as components of the winding device for conveying the windable material. The winding device has rotatable components for conveying the windable material. The winding device includes the winding spread. For support or also for transport, ball bearings or slide bearings can be attached to the winding spread, in particular to the spread struts or to support struts. At least one of the pivot bearings can be formed by a motor. This means that the fire protection curtain runs particularly smoothly and can be opened or closed more quickly than known locking devices. In addition, rollers on the lateral edge areas of the fire protection curtain can further improve the running behavior of the curtain in lateral guide rails. At least one roller is preferably mounted in a guide area of a guide rail.

A longitudinal extension of the shaft of the closure device can, for. B. be up to 6 m and more. It is possible, as already described above, to reinforce the closure device with at least one stabilizing strut. Bending or sagging of the shaft is avoided by means of a stabilizing strut. According to one aspect, the stabilizing strut is a reinforcement of the closure device. The intermediate area longitudinal to the shaft is available for accommodating a stabilizing device. The stabilization device can comprise at least one stabilization strut. The stabilizing strut preferably extends along the shaft. A stabilizing strut designed as a trapezoidal profile rod, a U-profile rod or a hollow profile rod is particularly stable. The stabilization device can be connected to the winding spread. According to a further aspect, the stabilization device can comprise at least one shaft support element. The shaft support member is attached to the stabilizing strut. The first shaft and/or a further shaft extend transversely to the shaft support element. An anti-friction coating, such as a plastic coating, may be applied to the winding spread, the stabilizing strut, and/or the shaft support member. A stabilizing strut attached to a mounting plate provides particularly good support. The support plates extend at the end portions of the shaft. Preferably, there is a first support plate and a second support plate associated with the respective first and second ends when a plurality of shafts are provided. The stabilizing strut can be welded to the mounting plate. It is also possible to attach the stabilizer bar to the mounting plate with a stabilizer bar mount. An attachment is z. B. possible by a screw connection, a rivet connection or a plug connection. The stabilization device can be present as a diagonal strut in the intermediate area. The diagonal brace forms an angle to the shaft. The stabilization device can also be provided as a cross stabilization. A cross stabilization has at least four stabilization part struts, each of which can be fastened to a mounting plate and have a common connection area. A cross stabilization is particularly advantageous if the wave and the winding spread or another wave a distance of more than 20 cm, z. B. more than 50 cm or more than 100 cm to each other.

A closure device in which the shaft and the winding spreader are mounted in a common frame is particularly robust. The frame can B. be a cuboid structure having a hollow profile rod at a plurality of edge regions. To protect against contamination, the shaft and the winding spread as well as the material that can be wound up are preferably accommodated in a housing in the wound up state. The frame can be part of the housing. Side surfaces can be at least from the frame be partially enclosed. A temperature gradient can lead to the development of stresses in a rigid material, such as a frame structure or a housing, the distortion of which must be avoided as far as possible for the operational reliability of the closure device. At least one side surface of the closure device is preferably covered with an elastic material and/or with a film. A temperature gradient of the substance or the film does not stress the closure device. Effects of a temperature gradient across the frame on the shafts and in particular a rotatability of the shafts remain as small as possible. In addition, the windable material is protected from dust and other contaminants. Even better protection, e.g. B. against the spread of smoke particles, offer a fabric and / or a sheet material, such as a fiber reinforced sheet, which are suitable for fire protection. The weight of the locking device is kept as low as possible by using fabric and foil, which, among other things, facilitates installation.

The winding spread can be arranged on at least one stabilizing strut. The stabilizing strut is z. B. on a frame fastened to a building. The stabilizing strut is arranged in the intermediate area, which is in particular a partial area of the winding core. A series of spreading struts can extend from the stabilizing strut in a first spreading direction. At least a second series of splay struts may be attached to the (first) stabilizing strut or to a second stabilizing strut. The second sequence extends in a second spreading direction. The first series of spreader struts and the second series of spreader struts are preferably arranged at an angle of more than 30° to one another.

A toothed wheel or a belt pulley can be rotatably arranged on an end of the spreading strut that faces away from the stabilizing strut. A first spreader strut and a second spreader strut and possibly further spreader struts are aligned with one another in such a way that a plurality of gear wheels or a plurality of belt pulleys can be connected to a ring-like drive belt for torque transmission. According to a first aspect, the drive belt carries the windable material. According to a further aspect, the windable material can be conveyed around the winding spread by the drive belt.

To convey the material that can be wound up, a tensile force can be applied to at least one drive belt, preferably by at least one motor. The tensile force continues along the windable material.

The length of the material that can be wound up can be varied over or through a building opening.

For fire protection, z. B. an aramid material as a film or fabric. It is also possible to use glass fiber fabric. A layered material in which materials such as foils or fabrics are combined with one another is particularly advantageous in order to combine their specific advantages, such as high heat insulation, high impermeability and low burn-off. The coilable material is preferably a non-combustible material. One option for a non-combustible material is a fireproof fabric in which heat and fire resistant fibers are woven together. It is possible to use an open mesh fabric, such as fiberglass fabric, which has an intumescent coating. In one embodiment, the fibers can bond through the coating at a temperature of 100°C. The pores of the fabric are closed at a temperature of 150°C. The coating foams at a temperature of 200°C. An insulating layer, such as insulating foam, is formed on the fire protection fabric, which acts as a heat barrier. A fire protection film is preferably reinforced by wires or fibers drawn into the film in order to better withstand mechanical stress. A rollable material that has a first layer and a second layer is even more stable. Preferably, the first layer and the second layer completely overlap each other. A windable material can have a layer thickness of less than 0.5 mm. Better fire protection is achieved with a layer thicker than 0.5 mm. A good protection offers z. B. a total layer thickness of a, preferably multi-layer, windable material of at least 4 mm. With a layer thickness of between 10 mm and 20 mm, particularly good fire protection can be achieved with good winding properties and durability against mechanical stress. Layer thicknesses of up to 30 mm, preferably less than 100 mm, can be used as the material that can be wound up. In the event of a fire, this makes it possible to provide a particularly long resistance under the action of fire. The locking device is suitable for newly constructed buildings as well as for historical buildings. Due to the closure device, a particularly large opening cross-section, e.g. B. releasable for a passage, because the closure device is considered very space-saving. It is also possible to more harmoniously integrate the closure device into the architectural structure of the building in a coiled state.

The combinations and exemplary embodiments presented above can also be considered in numerous other connections and combinations.

Character brief description

• Figur 1 eine Verschlussvorrichtung schematisch als Querschnitt ohne aufwickelbares Material,
• Figur 2 die Verschlussvorrichtung von Figur 1 mit aufwickelbarem Material,
• Figur 3 eine Ausführungsform einer Verschlussvorrichtung schematisch als Querschnitt ohne aufwickelbares Material,
• Figur 4 die Verschlussvorrichtung von Figur 3 mit aufwickelbarem Material,
• Figur 5 eine Ausführungsform einer Verschlussvorrichtung schematisch als Querschnitt in einer ersten Winkelstellung einer ersten Welle und einer zweiten Welle,
• Figur 6 die Verschlussvorrichtung von Figur 5 in einer zweiten Winkelstellung der Wellen,
• Figur 7 einen Ausschnitt einer Seite einer Verschlussvorrichtung in räumlicher Darstellung ohne aufwickelbares Material,
• Figur 8 die Verschlussvorrichtung von Figur 7 schematisch als Querschnitt mit aufwickelbarem Material und
• Figur 9 eine Ausführungsform einer Verschlussvorrichtung mit einer einnehmbaren Winkelstellung der Wellen zeigt.

The present invention can be understood even better if reference is made to the accompanying figures, which present particularly advantageous configuration options by way of example, without restricting the present invention to these, wherein

• figure 1 a closure device schematically as a cross section without windable material,
• figure 2 the locking device of figure 1 with windable material,
• figure 3 an embodiment of a closure device schematically as a cross section without windable material,
• figure 4 the locking device of figure 3 with windable material,
• figure 5 an embodiment of a closure device schematically as a cross section in a first angular position of a first shaft and a second shaft,
• figure 6 the locking device of figure 5 in a second angular position of the shafts,
• figure 7 a section of one side of a closure device in a three-dimensional representation without windable material,
• figure 8 the locking device of figure 7 schematically as a cross section with windable material and
• figure 9 shows an embodiment of a closure device with an assumable angular position of the shafts.

character description

The in the Figures 1 to 9 The representations of embodiments of the closure device 2, 102, 202, 302 and 402 that are shown have many things in common, which are only explained using individual embodiments or figures to avoid repetition. The respective numerical values with a distinction in increments of "100" are reserved for physical features that correspond to one another.

The locking device 2 in figure 1 relates to a roller door 4. The roller door 4 is mounted in a ceiling area 9 of a building 8 and is used to close a building opening 11. On the frame 80 there is a covering support 88 onto which a covering material 89 for a first side surface 85 of the frame 80 can be drawn. The covering material 89, dashed in figure 1 entered, can also cover a second side face 86 up to the sealing rail 92. An insulation board 12 offers protection against heating for the closure device 2 on a further side surface (without reference number). The cross-sectional view of figure 1 reveals a first side panel 81 fixed to the frame 80. A second side plate (not shown) configured corresponding to the first side plate 81 is opposite to the first side plate 81 on the frame 80 . On the first side plate 81, a hanger bracket 78 is slidably mounted at slots such as slot 79. As shown in FIG. The suspension support 78 carries a winding spread 30 via a first pivot bearing 48, which in the execution of figures 1 and 2 is designed as a wave. Another first pivot bearing (in the sectional drawing of figure 1 not shown) makes it possible for the winding spread or shaft 30 to be rotatable about a first axis of rotation 51 . The winding spread 30 has an outer diameter 33 on which a first gear wheel 56 with a first gear wheel diameter 57 is fastened, a gear driver 62, such as a spot weld, securing a connection between the first gear wheel 56 and the shaft 30 against rotation. The sealing rail 92 extends parallel under the shaft 30 and, among other things, increases the stability of the frame 80 . On the first gears, such as gear 56, there is an annular drive belt, such as drive belt 64. Drive belt 64 has circumferentially continuous teeth, such as tooth 65, which faces gear 56. The drive belt 64 provides a support surface 68 for windable material that can be mounted at a mounting location 67 . A shaft 32 is provided which can be driven by an electric motor 54 . Thus, shaft 32 can be referred to as a first shaft. A shaft driver 55 transmits a driving force from the electric motor 54 to the shaft 32 via the shaft driver 55. The motor 54 provides a second pivot bearing 49 that allows the shaft 32 to rotate about a second axis of rotation 52 . The rotation of the shaft 32 by means of the electric motor 54 drives a second toothed wheel 58 to drive the drive belt 64 . The drive belt 64 rotates the winding spreader 30 or shaft 30 via the first gear wheel 56 . The shaft 30 has a first outer diameter 33 which is the same as the outer diameter 31 of the driven shaft 32 . The second gear wheel 58 has a second gear wheel diameter 59 which is larger than the first gear wheel diameter 57 of the first gear wheel 56 on the winding spread 30 . The first gear 56 and the second gear 58 form a first gear group 60 over which the drive belt 64 extends. Parallel to the first gear wheel group 60, further gear wheel groups (not shown), in particular a second gear wheel group, which is designed in the same way as the first gear wheel group and is fitted with a drive belt, can be installed. The elongated holes, such as the elongated hole 79, on the suspension support 78 are used to set the shaft distance 34 between the first axis of rotation 51 and the second axis of rotation 52 fixed by the drive support 76 in such a way that the drive belt 64 lies taut on the gear wheels 56, 58.

In the cross-sectional view of figure 2 a material 13 that can be wound up is shown in the closure device 2 designed as a roller door 4 . There is a roller 19 in the closure device 2 . An end portion 14 of the roll-up door material 13 is mounted on the drive belt 64 at the attachment point 67 . The contact surface 68 of the material 13 that can be wound up is formed on the drive belt 64 . The material 13 that can be wound up is in the form of a spiral 20 around the drive belt 64. The roller 19, which can also be referred to as a winding, with the spiral arrangement 20 is located on the winding device 7. In the cross-sectional representation of FIG figure 2 the edge area 22 of the rollable material 13 is covered. The windable material 13 surrounds the shafts 30, 32. The windable material 13 surrounds the gears 56, 58. Between the shafts 30, 32 is an intermediate region 42 which is defined on a first side 43 by the shaft 30 and on a second side 44 is released by the shaft 32. On a third side 45 and a fourth side 46, the intermediate area 42 is delimited by the drive belt 64 and by the material 13 that can be wound up. The material 13 that can be wound up is in an unwound state 17 at the outlet opening 95 of the winding device 7 . The wrappable material 13 has a first layer 23 and a second layer 24 which are firmly connected to one another. A total layer thickness 27 of the windable material is 10 mm. Starting from a wound up state 16, the unwound state 17 can be brought out through the outlet opening 95, as a result of which the roller door 4 can form a closure (not shown).

In the cross-sectional view of a closure device 102 in figure 3 became, as in figure 1 , windable material 113 omitted for clarity. In figure 4 is, similar to figure 2 , the rollable material 113 is shown, which is provided for a fire protection curtain 106 of the closure device 102. The closure device 102 has a frame 180 and is held in a ceiling area 109 of a building 108 with the aid of a frame attachment 182 over an opening 111 in the building. A guide rail 190 extends along the opening 111 in the building and opens out into the outlet opening 195 of the closure device 102 with a receiving area 197 that is assigned to the frame 180 . The guide rail 190 serves, as in figure 4 is shown, a lateral guide of an edge of the rollable material 113. The closure device 102 in figure 3 comprises a shaft 132 and a winding spread 130 on which a first gear 156 and a second gear 158 can be rotated by means of a toothed belt 164 in a direction of rotation 153 in the same direction. The gears 156, 158 are drawn transparently to make the arrangements behind them easier to see. The winding spread 130 is segmented along the wave 132, that is to say in other words not continuous in a wave-like manner. The individual winding spreading segments are connected to the stabilizing strut 170 or to the frame 180 . A clockwise direction of rotation 153 is exemplary marked by arrows. In figure 3 a clockwise rotation corresponds to a winding rotation applied by an electric motor 154 to the shaft 132 to create a wound condition, such as the wound condition 116 in FIG figure 4 . A particularly good load-bearing capacity of the winding spread 130 is obtained by interlocking the hanging support 178 of the winding spread 130 with a further hanging support 178'. The suspension support is assigned to the winding spread 130. Forces exerted on the winding spread 130 by the direction of rotation 153 are at least partially diverted to the frame 180 via the suspension supports 178, 178'. A drive support 176 associated with the electric motor 154 has slots, such as slot 177. The shaft 132 is slidable with respect to the winding spread 130 to allow the timing belt 164 to be tensioned. The stabilizing strut 170 , which is connected to the frame 180 via a stabilizing strut holder 174 , extends in an intermediate region 142 . The intermediate region 142 extends around the stabilizing strut 170 from a first side 143 on which the shaft 132 is located to a second side 144 on which the winding spread 130 is located. The stabilizing strut 170 leaves the intermediate area 142, which is opposite the toothed belt 164, free to such an extent that the teeth, such as the tooth 165, can be guided along the stabilizing strut 170.

In figure 4 the intermediate area 142 is limited on the further sides 145, 146 by the material 113 which can be wound up. The toothed belt 164 serves to form a contact surface 168 with the material 113 that can be wound up. Material 113 that can be wound up is present as a roll 119 . By rotating the electric motor 154 in the direction of rotation 153' counterclockwise, the shaft 132 and, by means of the toothed belt 164, the winding spreader 130 can be driven in the same direction of rotation 153'. The windable material 113, which is in the unwound state 117, can be lowered into the guide rail 190 with the end region 114', which can also be referred to as the closure end region 114'. The building opening 111 can thus be closed. At the end area 114' there is a sealing body 121 which serves to attach the fire protection curtain 106 to a floor area (not shown). When unwinding in the direction of rotation 153 ′, the fastening point 167 runs around the winding spread 130 and around the shaft 132 at an end region 114 of the material 113 that can be wound up, which can also be referred to as the winding end region 114 . In a time sequence of a toothed belt movement, a distance between the fastening point 167 and the winding spread 130 can be periodically increased and decreased again. When the windable material 113 is unwound, the intermediate region 142 remains free of windable material 113. The windable material 113 has a first layer 123 and a second layer 124, between which a swellable intermediate layer 125 is located. In one for a closure (not shown) the Structure opening 111 can be created, unwound state 117 by means of a expanding tape 193, which is glued to the sealing rail 192, with sufficient heat development, an improved seal against the passage of smoke arise. Another sealing bar 192' with a swelling tape (not shown) at the in figure 3 designated exit opening 195, the seal against the coilable material 113 in the closure device 102 of figure 4 improve even further.

figure 5 and figure 6 show another embodiment of a closure device 202 for a fire curtain 206. An optionally, z. g. in the event of a fire alarm, the building opening 211 to be closed is located under a wall area 210 of a building 208.

In the embodiment of figures 5 and 6 In comparison to the other embodiments, driven and guided shafts or winding spreads are exchanged to illustrate that the invention is independent of the positioning of active and passive shafts or active and passive winding spreads.

The locking device 202 is screwed onto the wall area 210 with the frame attachment 282 for a frame 280 . The frame 280 is connected to a guide rail 290 for the rollable material 213 . The frame 280 includes two side plates, like the side plate 281. To the first side plate 281, a first support plate 272 is rotatably mounted about an axis 236. As shown in FIG. A first shaft 232 and a second shaft 230 extend from the first support plate 272 as a pair assembly 235. The shafts 230, 232 are each common in a same direction of rotation in the Figures 3 and 4 shown, by the electric motor 254 in figure 5 rotatable, in particular rotatable. A rotary movement of the shafts 230, 232, which can also be referred to as shaft rotation, is mediated by a toothed belt 264. A roll 219 can be reduced in size by lowering material 213 that can be wound up. The roll 219, also referred to as a winding, is located on the winding device 207, with a bearing surface 268 being present between the toothed belt, such as the toothed belt 264, and the material 213 of the roll 219 that can be wound up. The winding device 207 comprises, as a pair arrangement 235, the first shaft 232 and the second shaft 230, between which there is an intermediate region 242. There is a variable angle 239 between the winding device 207 and the guide rail 290, in particular with regard to the mounting plates of the winding device 207, such as the first mounting plate 272. The angle 239 can also be between the building 208 or the wall area 210 and an imaginary, axial connecting line between the shafts 230, 232 located will. The shaft 230 of the pair arrangement 235 can be brought closer to the wall area 210 by a rotation 238 about the axis 236 . For example, during assembly, the winding device 207 can be adjusted. The timing belt 264 is adjustable to extend in a straight range in a direction of the guide rail 290 . The angle 239 can e.g. B. be 90 °, without the building opening 211 is narrowed by the winding device 207. An angle, such as angle 239, is attainable, which is preferably greater than 0° and more preferably less than 180°.

In figure 6 the closure device 202 is shown with a position of the winding device 207 in which, compared to the angle 239 in figure 5 increased angle 239' is taken. By rotating 238, 238' the winding device 207 in figure 6 , which can also be referred to as tilting 238, 238', the angle 239, 239' can be changed into a selectable, fixed end position. The edge region, such as the edge region 222, of the roll 219 of the roll-up material 213 which is associated with a respective mounting plate, such as the first mounting plate 272, is present as a spiral 220. FIG. The guide rail 290 assigns a predetermined direction to the edge region 222 which is continued from a wound state 216 to the unwound state 217 . At rotation 238' in figure 6 as well as the rotation 238 in figure 5 the frame 280 and the side plate 281 remain stationary on the wall area 210. As in figure 6 As can be seen, the winding device 207 can be positioned by rotation 238 to rest on the wall area 210 . The angle 239' in figure 6 locates roller 219 closer to wall portion 210 than angle 239 in figure 5 . The closure device 202 can thus be placed on the wall area 210 with the smallest possible extension. A space segment located above the side plate 281 in front of the wall area 210 can be filled by the closure device 202 . A niche above the closure device that may be undesirable for aesthetic reasons is not completely lost as a cavity to be shielded.

figure 7 FIG. 13 is a spatial representation of a side region of a closure device 302, again with material that can be wound up being omitted for a better overview. The closure device 302 includes the winding device 307 which includes a first shaft 332 and a winding spreader 330 . The winding spread 330 is designed as a second shaft 330 . The illustrated side area of the winding device 307 has a first side plate 381 and a first mounting plate 372, which are mirror-symmetrical in a second, not illustrated, side area of the winding device 307 to the right of the figure 7 a second side panel and a second mounting panel are provided. The winding device 307 comprises a plurality of gear wheels, the first gear wheel 356 and the second gear 358 are shown as an associated pair. The first gear 356 is connected to the second gear 358 via a drive belt 364 . One of the second gears, second gear 358 shown, is located on first shaft 332 in proximity to drive bracket 376 for mounting a motor for driving first shaft 332 . The side plate 381 has a fastener 382 . The first side plate 381 can be firmly connected to the first mounting plate 372 . The first mounting plate 372 includes a fastener 382'. The fastening elements 382, 382' are provided for ceiling mounting of the closure device 302. A stabilizing strut 370 is installed in an intermediate region 342 between the first shaft 332 and the second shaft 330 . The stabilizing strut 370 has a trapezoidal hollow profile in cross section which is open on one side. Stabilizing strut 370 is attached to mounting plates, such as first mounting plate 372, by screws (unnumbered). The second shaft 330 is passed through a shaft support member 371 fixed to the stabilizing strut 370 . The sealing rail 392 extends parallel to the second shaft 330. In cross-section, the sealing rail 392 has a trapezoidal hollow profile that is open on one side. The sealing rail 392 is fixed to side plates such as the first side plate 381 . Insulation boards, such as the insulation board 312' and the insulation board 312'', are arranged around the sealing rail 392. The insulation boards 312', 312'' are used to thermally insulate the sealing rail 392, so that the sealing rail in the event of increased ambient heat of z. B. 100 ° C retains its shape as possible.

A cross-sectional view of the closure device 302 is in FIG figure 8 shown. The closure device 302 is mounted in the ceiling area 309 . The first shaft 332 is supported on the drive bracket 376 and is positionable in elongated holes such as the elongated hole 377 of the drive bracket 376 on the mounting plates such as the first mounting plate 372 . There is a first adjustment option for the winding device 307, which is used to tension the drive belt 364 surrounding the shafts 330,332. Material 313 that can be wound up is placed on the winding device 307 in a wound state 316 as a roll 319 . Material 313 that can be wound up hangs from the roll 319 in an unwound state 317 to such an extent that material 313 that can be wound up is located in the guide rail 390 . The guide rail 390 extends along the structure opening 311, which can be closed by the deployment of the windable material 313 in the unwound state 317, in other words, by the fire protection curtain 306. The winding device 307 is protected from heat input by insulating panels, such as the insulating panels 312, 312', 312", so that room heating can only have a delayed effect on the winding device 307. Sufficient operational reliability of the Closure device 302 is secured. The closure device 302 is supported both by the sealing rail 392 and by the stabilizing strut 370, which is located in the intermediate region 342, against warping that is to be feared, so that the winding device 307 remains dimensionally stable even in the event of a fire. The first side plate 381 has a shaft-receiving slot 383 into which a shaft axis pin 384, which forms the end termination of the second shaft 330, can be inserted for fastening the second shaft 330.

A further embodiment of a closure device 402, which is shown in a cross section in figure 9 is shown is based on the winding device 407, which has particular similarities with the winding device 307 in FIGS figures 7 and 8th having. Areas of the closure device 402 that are covered by material 413 that can be wound up are indicated by dashed lines. There is a pair assembly 435 that includes the first shaft 432 and the second shaft 430 . According to one aspect of a winding core extension, the first wave and the second wave can each also be referred to as a winding spread. The pair assembly 435 is held together by two support plates, such as the first support plate 472 . The pair arrangement 435 has an intermediate region 442 in which the stabilizing strut 470 extends. Windable material 413 arranged as a roll 419 is laid on the pair arrangement 435 . The winding device 407 is tiltable with respect to the second shaft 430 at the side plates, such as the side plate 481 . A first tilting rotation 438 of the pair arrangement 435 can bring the mounting plate, like the first mounting plate 472, up to a stop against the wall area 410. A rotation 438 ′ opposite to the first rotation 438 can position the pairing 435 in a position pointing away from the wall portion 410 nearly perpendicularly. The first mounting plate 472 can be permanently fastened to the side plate of the frame side 481 in a respective position or intermediate position. During the rotations 438, 438', the stabilizing strut 470 is also carried along. The sealing rail 492 remains stationary in front of the wall area 410. This facilitates assembly of the closure device. A second adjustment option, namely an angle adjustment option for the closure device 402, in particular the winding device 407, is provided, which allows the closure device 402 to be spatially adjusted.

The design options shown in the individual figures can also be combined with one another to form advantageous embodiments.

Reference List

2, 102, 202, 302, 402

Locking device, in particular fire protection locking device

4

rolling gate

106, 206, 306

fire curtain

7, 207, 307, 407

winding device

8, 108, 208

structure

9, 109, 309

ceiling area

210, 410

Wall area, especially the vertical side of a support, such as a lintel

11, 111, 211, 311

structural opening

12, 312, 312', 312"

insulation board

13, 113, 213, 313, 413

windable material, in particular windable material

14, 114, 114'

end of the material

16, 116, 216, 316

coiled state, especially coiled area

17, 117, 217, 317

unwound state, in particular partially unwound state

19, 119, 219, 319, 419

role

20, 220

spiral arrangement, namely deformed spiral

121

sealing body

22, 222

Edge area of the wound material, in particular cross-sectional area

23, 123

first layer

24, 124

second layer

125

third layer

27

total layer thickness

30, 130, 230, 330, 430

Winding spread, especially second wave

31

Outside diameter, especially the winding spread

32, 132, 232, 332, 432

wave, especially first wave

33

outside diameter of the shaft

34

shaft spacing

235, 435

pair arrangement

236

axis along the waves

238, 238', 438, 438'

rotation of the pair arrangement

239, 239`

angle

42, 142, 242, 342, 442

intermediate area

43, 143

first page

44, 144

second page

45, 145

further page, especially third page

46, 146

further page, especially fourth page

48

first pivot

49

second pivot bearing

51

first axis of rotation

52

second axis of rotation

153, 153'

Direction of shaft rotation, in particular in the same direction of rotation

54, 154, 254

electric motor

55

shaft driver

56, 156, 356

first gear

57

first gear diameter

58, 158, 358

second gear

59

second gear diameter

60

first gear group

62

gear driver

64, 164, 264, 364

Drive belts, in particular toothed belts

65, 165

Tooth, in particular gear surface of the toothed belt

67, 167

Attachment point of the windable material

68, 168, 268

Bearing surface of the windable material, in particular the outer surface of the drive belt

170, 370, 470

stabilizer bar

371

Support element, in particular shaft support element

272, 372, 472

first mounting plate

174

stabilizer bar mount

76, 176, 376

drive support

177,377

Long hole

78, 178, 178'

suspension support

79

Long hole

80, 180, 280

frame

81, 281, 381, 481

Side plate, in particular first frame side plate

82, 182, 282, 382, 382'

Frame attachment, in particular fastener

383

shaft axis receiving slot

384

shaft axis pin

85

first face

86

second side face

88

Housing, in particular cover support

89

covering fabric

190, 290, 390

guide rail

92, 192, 192', 392, 492

sealing rail

193

source tape

95, 195

exit port

197

recording area

Claims (15)

1. Fire-protection closure device (2, 102, 202, 302, 402) for a building (8, 108, 208),

   which comprises a winding device (7, 207, 307, 407) and

   a windable material (13, 113, 213, 313, 413) that can assume a wound state (16, 116, 216, 316) and an at least partially unwound state (17, 117, 217, 317), wherein

   the windable material (13, 113, 213, 313, 413) is a fire-protection curtain (106, 206, 306),

   wherein

   a winding spindle (30, 130, 230, 330, 430) is provided parallel to and at a distance from a shaft (32, 132, 232, 332, 432), which shaft is arranged in such a way that in the wound state (16, 116, 216, 316) the windable material (13, 113, 213, 313, 413) is in the form of a single, spiral-shaped arrangement and surrounds the winding spindle (30, 130, 230, 330, 430) and the shaft (32, 132, 232, 332, 432), wherein the winding spindle (30, 130, 230, 330, 430) and the shaft predefine a winding core which differs from a circular shape in cross-section,

   characterized in that

   the spiral-shaped arrangement is a trigonally distorted spiral which can be formed as a result of the fact that the winding core has, in a cross-sectional structure, two semi-circles oriented convexly relative to one another, wherein the first semi-circle is associated with the shaft and the second semi-circle is associated with the winding spindle, and wherein one semi-circle has a smaller radius than the other semi-circle.
2. Fire-protection closure device (2, 102, 202, 302, 402) according to claim 1, characterized in that the shaft (32, 132, 232, 332, 432) can be rotated by a drive device, and in particular a shaft driver (55) is provided for transmitting a drive force from the drive device.
3. Fire-protection closure device (2, 102, 202, 302, 402) according to claim 2, characterized in that
   an intermediate region (42, 142, 242, 342, 442), which is preferably free of windable material (13, 113, 213, 313, 413), extends between the winding spindle (30, 130, 230, 330, 430) and the shaft (32, 132, 232, 332, 432), wherein in particular a first side (43, 143) of the intermediate region (42, 142, 242, 342, 442) is bounded by the winding spindle (30, 130, 230, 330, 430) and a second side (44, 144) of the intermediate region (42, 142, 242, 342, 442) is bounded by the shaft (32, 132, 232, 332, 432), and in particular a boundary on at least one side, such as a further side (45, 46, 145, 146), of the intermediate region (42, 142, 242, 342, 442) can be formed by windable material (13, 113, 213, 313, 413).
4. Fire-protection closure device (2, 102, 202, 302, 402) according to any one of claims 2 or 3, characterized in that
   the shaft (32, 132, 232, 332, 432) is connected to the winding spindle (30, 130, 230, 330, 430) by way of at least two rotary bearings (48, 49), wherein at least one of the rotary bearings (49) is formed by a motor (54, 154, 254), and in particular the winding spindle (30, 130, 230, 330, 430) is rotatable at least in part and in particular is rotatable in the same direction as the shaft (32, 132, 232, 332, 432), each about an associated axis of rotation (51, 52).
5. Fire-protection closure device (2, 102, 202, 302, 402) according to any one of the preceding claims, characterized in that
   the winding spindle (30, 130, 230, 330, 430) can be driven by a motor, and in particular an outer diameter (31) of the winding spindle (30, 130, 230, 330, 430) differs from an outer diameter (33) of the shaft (32, 132, 232, 332, 432).
6. Fire-protection closure device (2, 102, 202, 302, 402) according to any one of claims 2 to 5, characterized in that
   the winding spindle (30, 130, 230, 330, 430) and the shaft (32, 132, 232, 332, 432) are connected to one another by way of at least one drive belt (64, 164, 264, 364), wherein preferably the drive belt (64, 164, 264, 364) provides a bearing surface (68, 168, 268) for the windable material (13, 113, 213, 313, 413).
7. Fire-protection closure device (2, 102, 202, 302, 402) according to any one of claims 2 to 6, characterized in that
   at least two toothed wheels (58, 158, 358) are arranged on the shaft (32, 132, 232, 332, 432) at a distance from one another along a longitudinal extension of the shaft, each of said toothed wheels being associated with a respective toothed wheel (56, 156, 356) on the winding spindle (30, 130, 230, 330, 430), wherein the winding spindle (30, 130, 230, 330, 430) comprises at least a first toothed wheel (56, 156, 356), wherein in each case the first toothed wheel (56, 156, 356) and a second toothed wheel (58, 158, 358) on the shaft (32, 132, 232, 332, 432) are connected by way of a toothed belt (64, 164, 264, 364) or a chain, wherein an end region (14, 114) of the windable material (13, 113, 213, 313, 413) is fixedly connected to the toothed belt (64, 164, 264, 364) or to the chain, wherein in particular a first maximum diameter of the first toothed wheels (56, 156, 356) differs from a second maximum diameter of the second toothed wheels (58, 158, 358).
8. Fire-protection closure device (2, 102, 202, 302, 402) according to claim 7, characterized in that the trigonally distorted spiral can be formed as a result of the fact that an outer diameter of the winding spindle or the maximum diameter of the toothed wheel arranged on the winding spindle differs from an outer diameter of the shaft or from the maximum diameter of the toothed wheel arranged on the shaft and associated with the toothed wheel of the winding spindle.
9. Fire-protection closure device (2, 102, 202, 302, 402) according to any one of claims 2 to 7, characterized in that
   the winding spindle (30, 130, 230, 330, 430) and the shaft (32, 132, 232, 332, 432) are pivotably mounted as a paired assembly (235, 435), wherein an orientation of the paired assembly (238, 238', 438, 438') relative to an extension of the unwound state (17, 117, 217, 317) can be adjusted by rotating (238, 238', 438, 438') the paired assembly (235, 435) through a predefined angle (239, 239'), such as an angle of 90°, about an axis (236) extending along the shaft (32, 132, 232, 332, 432), the paired assembly (238, 238', 438, 438') preferably being snap-in locked on a side plate (81, 281, 381, 481).
10. Fire-protection closure device (2, 102, 202, 302, 402) according to any one of the preceding claims, characterized in that
    a stabilizing strut (170, 370, 470) extends in an intermediate region (42, 142, 242, 342, 442), which is a sub-region of the winding core, wherein the stabilizing strut (170, 370, 470) is a bar which has, for example, a trapezoidal, U-shaped or hollow profile and which preferably keeps the shape of the winding device (7, 207, 307, 407) stable by way of at least one mounting plate (272, 372, 472), to prevent it from distorting in the event of a fire, wherein preferably at least one supporting element (371) or a succession of spindle struts is fastened to the stabilizing strut (170, 370, 470) and in particular serves to guide the winding spindle (30, 130, 230, 330, 430) and/or the shaft (32, 132, 232, 332, 432).
11. Fire-protection closure device (2, 102, 202, 302, 402) according to any one of the preceding claims, characterized in that
    the winding spindle (30, 130, 230, 330, 430) and the shaft (32, 132, 232, 332, 432) are mounted in a frame (80, 180, 280), wherein preferably at least one side face (85, 86) formed by the frame (80, 180, 280) is covered with a fabric (89) and/or with a film, wherein the fabric (89) and/or the film (89) is/are suitable for fire protection purposes.
12. Fire-protection closure device (2, 102, 202, 302, 402) according to any one of the preceding claims, characterized in that
    the windable material (13, 113, 213, 313, 413) comprises a layered material, for example a fire-protection fabric and/or a fire-protection film, and preferably has a first layer (23, 123) and a second layer (24, 124), and in particular a foamable coating and/or a swellable intermediate layer is/are provided.
13. Fire-protection closure device (2, 102, 202, 302, 402) according to any one of the preceding claims, characterized in that the winding spindle (30, 130, 230, 330, 430) is a shaft.
14. Fire-protection closure device for a building,

    which comprises a winding device and a windable material that can assume a wound state and an at least partially unwound state, wherein the windable material is a fire-protection curtain,

    characterized in that

    a winding spindle is provided parallel to and at a distance from at least two shafts, which shafts are arranged in such a way that in the wound state the windable material is in the form of a single, spiral-shaped arrangement and surrounds the winding spindle and the shafts, wherein the winding spindle and the shafts predefine a winding core which differs from a circular shape in cross-section,

    and wherein the spiral-shaped arrangement is a trigonally distorted spiral.
15. Method for rolling up a windable material (13, 113, 213, 313, 413) of a closure device (2, 102, 202, 302, 402) for protecting against fire, such as a fire-protection closure device (2, 102, 202, 302, 402) according to any one of claims 1 to 14, wherein, in an unwound state of the windable material, a building opening (11, 111, 211, 311) is closed by the windable material (13, 113, 213, 313, 413), wherein the windable material (13, 113, 213, 313, 413) is a fire-protection curtain and has an elastic flexibility, and a radius of curvature of the windable material (13, 113, 213, 313, 413) is assumed as a result, characterized in that
    the windable material is wound in such a way that at least a portion of the windable material (13, 113, 213, 313, 413) surrounds in a spiral-shaped manner at least one winding spindle (30, 130, 230, 330, 430) and at least one shaft (32, 132, 232, 332, 432) of the closure device (2, 102, 202, 302, 402), which shaft is arranged parallel to and at a distance from the winding spindle, wherein the material (13, 113, 213, 313, 413) in a wound region (16, 116, 216, 316) extends along the winding spindle (30, 130, 230, 330, 430) in the form of a single, spiral-shaped arrangement (20, 220) with a deformation that saves space in one spatial dimension, and wherein the spiral-shaped arrangement is a trigonally distorted spiral which is formed as a result of the fact that the winding core has, in a cross-sectional structure, two semi-circles oriented convexly relative to one another, wherein the first semi-circle is associated with the shaft and the second semi-circle is associated with the winding spindle, and wherein one semi-circle has a smaller radius than the other semi-circle.

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