Hold-open device for a door, window or the like

Abstract

The invention relates to a hold-open system with at least one signal transmitter (40) and a hold-open device (12) designed to hold a leaf (22) of a door, window, or the like, in particular a fire or smoke protection door, in an open position in a first mode, and to release the leaf in a second mode. The hold-open system is characterized in that the signal transmitter (40) has its own power supply (46) and a radio module (44); the hold-open device (12) has a control unit (30), wherein the control unit (30) comprises a radio module (32) designed to communicate with the radio module (44) of the signal transmitter (40), and wherein the control unit (30) is designed to switch the hold-open device (12) from the first mode to the second mode in order to release the door, depending on a signal from the signal transmitter (40); and the hold-open device (12) is associated with a power supply (38, 39).The invention further relates to a locking device for a locking system.

Description

[0001] The present invention relates to a locking system comprising at least one signal transmitter and a locking device configured to lock a leaf of a door, window, or the like, in particular a fire or smoke protection door, in an open position in a first mode and to release the leaf in a second mode. Furthermore, the invention also relates to a locking device for the aforementioned locking system.

[0002] Hold-open systems are well-known and described in various standards (e.g., EN 14637). Hold-open systems are generally designed to lock a door or window leaf in an open position and, if necessary, release it from this position. Such hold-open systems are particularly necessary for so-called fire doors, for example, to move the door from the open position to the closed position in the event of a fire.

[0003] Hold-open systems usually consist of a power supply, a fire detection device, for example in the form of a ceiling fire detector, a triggering device and a hold-open device. Fig. Figure 4 shows a schematic representation of such a hold-open system. Several signaling devices, for example a ceiling detector or a manual release button, are connected to the release device, with this connection being made either wirelessly or wired via a radio module. In the present example, the release device also has a lintel fire detector, which is installed in the lintel of the door to be closed. The release device is connected to a power supply, for example 24 V or 48 V, and supplies the hold-open device with power. The hold-open device has a so-called hold-open element, which usually holds the door leaf in its open position when energized. In the event of a fire, the release device receives an alarm message, for example from the ceiling detector or the lintel detector, and switches a switching element, for example a relay or a transistor, to interrupt the power supply to the hold-open device.

[0004] Typically, the individual components of such a hold-open system, especially the release mechanism and the hold-open device, are connected via cables. However, hold-open systems such as those in Fig. 4, with radio ceiling detectors and radio manual release buttons that communicate with the release device via radio.

[0005] In all known solutions, the triggering device switches off the power supply to the locking device in the event of an alarm, which means that the triggering device and the locking device must always be connected to each other via a cable.

[0006] Although the aforementioned hold-open systems have proven themselves in practice, they have certain disadvantages in certain applications. If the various components of the hold-open system are not mounted on the same side of the fire wall, the fire wall must be drilled through for the cable connection. This requires additional effort, especially given that holes in fire walls require complex sealing.

[0007] In certain applications, the hold-open device is located in a floor-mounted door closer, which also results in complex wiring between the floor-mounted door closer on the one hand and, for example, the lintel-mounted fire detector and the triggering device on the other. The wiring must be routed from the floor to the lintel of the door.

[0008] For example, if the triggering device and the lintel fire detector are mounted on a cover of a fire door operator, and the other components of the hold-open system are located under the cover of the door operator, the installer must, for example, disconnect the cable connection before removing the cover. Especially with fire sliding door operators, the covers are several meters long, making this work difficult for one person to perform alone.

[0009] Even in the case of compact locking systems, where all components are housed under one hood and in close proximity to one another, the release mechanism and the locking mechanism must be connected via cables, which takes up space and makes it difficult to replace components in the event of a repair.

[0010] Against this background, the object of the present invention is to further develop the locking system of the aforementioned type in such a way that it no longer exhibits the aforementioned disadvantages. In particular, the locking system, with its individual components, should be more flexible in its design while requiring minimal cabling.

[0011] This object is achieved in the aforementioned locking system in that the signal transmitter has its own power supply and a radio module, the locking device has a control device, wherein the control device comprises a radio module which is designed to communicate with the radio module of the signal transmitter, and wherein the control device is designed to switch the locking device from the first mode to the second mode in order to release the door depending on a signal from the signal transmitter, and in that the locking device is assigned a power supply.

[0012] In other words, this means that the hold-open device becomes “intelligent” and is therefore no longer controlled solely by switching the power supply on and off. The control device within the hold-open device communicates with signal generators via the radio module and evaluates the corresponding signals. In the event of a fire, the hold-open device is then switched from the first mode to the second mode, i.e. the door or door leaf is closed. Compared to previous solutions, the hold-open system according to the invention does not have the previous triggering device, which significantly reduces the potential wiring effort. The hold-open device according to the invention only needs to be connected to a power supply in order to become operational. The signal generators themselves have their own power supply and can therefore communicate with the hold-open device, in particular the control device, via a radio module.

[0013] The problem is thus completely solved.

[0014] In a preferred embodiment, the locking device has at least one locking element, wherein in the first mode, power is supplied to the locking element, and in the second mode, no power is supplied to the locking element. Preferably, a holding magnet, an electrohydraulic valve, an electromechanical locking element, an electromagnetic locking element, or a motor is used as the locking element. Of course, other locking elements are also conceivable that release a locking function when de-energized.

[0015] In an alternative embodiment, the locking element can also be a bistable locking element that can be switched from one mode to another simply by an energy pulse. In other words, the locking element does not need to be completely de-energized, but rather a short, temporary current or voltage pulse is sufficient to release the door.

[0016] In a preferred further development, the signal generator is a lintel fire detector, a ceiling fire detector, in particular an optical smoke detector and / or a heat detector, an alarm contact of a fire alarm system, a fire gas sensor, a manual release button or a control device of another locking device.

[0017] In other words, any signaling device can be equipped with a radio module to communicate wirelessly with the control unit or its radio module. In special applications, it is also conceivable for the control unit of another locking device to act as the signaling device, for example, in double-leaf doors or sliding doors. This can, in particular, influence the closing sequence of two door leaves.

[0018] In a preferred embodiment, the signaling device's power supply is a battery, particularly a replaceable battery. This measure has proven particularly advantageous in terms of flexibility and durability.

[0019] In a preferred embodiment, the locking device is connected to a power supply, preferably an external power supply, preferably an electrical mains supply. Alternatively, the locking device can be designed to be energy-independent, with a battery for power supply. The battery can preferably be replaceable.

[0020] In particular, the solution using a battery to supply power to the locking device is particularly advantageous in terms of installation effort, as wiring for the electrical power supply is completely eliminated.

[0021] In a preferred embodiment, several signaling devices are provided, each of which communicates wirelessly with the control unit. This measure has the advantage that a hold-open system with a large number of signaling devices in a wide variety of spatial positions can be implemented without the need for wiring.

[0022] The object underlying the invention is also achieved by a locking device which has a locking element which is designed to lock the sash in an open position in a first mode and to release the sash in a second mode, has a radio module which is designed to communicate with external signal transmitters and in particular to receive alarm messages, and has a control device which is designed to set the locking element to the second mode upon receipt of an alarm message.

[0023] This locking device has the same advantages as the previously mentioned locking system, so that a further design is not necessary at this point.

[0024] In a preferred embodiment of the locking device, a connection for an electrical power supply is provided. This allows the locking device to be easily connected to a power supply, for example, via a plug-in contact. Alternatively, it is also conceivable to equip the locking device with its own mains-independent internal power supply, in which case the power supply is preferably provided by a battery.

[0025] In the preferred embodiment, the locking element can be switched to the first mode by supplying electrical energy and switched to the second mode by disconnecting the electrical energy. If a bistable locking element is used, the supplied electrical energy does not have to be completely switched off; instead, a short energy pulse is sufficient to switch from one mode to the other.

[0026] It is understood that the features mentioned above and those to be explained below can be used not only in the combination specified in each case, but also in other combinations or on their own, without departing from the scope of the present invention.

[0027] Further advantages and embodiments of the invention will become apparent from the description and the accompanying drawings. These show: Fig. 1 a schematic representation of an application case of a hold-open system; Fig. 2 is a schematic block diagram for explaining a locking system according to the invention; Fig. 3 a schematic block diagram of the locking system of Fig. 2, wherein a signal generator is a locking device of another locking system; and Fig. 4 a schematic block diagram of a prior art locking system.

[0028] In Fig. Figure 1 shows a section of a building with a corridor divided into two areas by a fire-resistant wall W. An opening is provided in the wall W, in which a door 20, in particular a fire-resistant door 20, is provided in order to separate the two areas from each other. It should be noted here that the door 20 represents any structural element with which an opening in a wall W can be opened and closed in a controlled manner. Such structural elements can be, for example, windows, skylights, single- or double-leaf doors, or even single- or double-leaf sliding doors.

[0029] In order to close a door leaf 22 of the door 20 in the event of a fire, for example, a hold-open system 10 is provided. Such a hold-open system 10 comprises, for example, a hold-open device 12, a door closer 13, a lintel fire detector 14, a manual release button 16 and a ceiling fire detector 18. As can be seen from the Fig. 1, the two manual release buttons 16 and the ceiling fire detectors 18 are also provided in both areas to the left and right of the wall W. The lintel fire detector 14, however, is provided in the lintel area of ​​the door 20 on one side of the wall, for example in the area of ​​the hold-open device 12. Of course, it is also conceivable to provide the lintel fire detector 14 on the opposite side of the wall W.

[0030] The door leaf 22 is connected to the locking device 12 and the door closer 13 via a sliding arm 24. The sliding arm 24 is guided at one longitudinal end in a slide rail 26, which is connected to the door leaf 22. The other longitudinal end of the sliding arm 24 is coupled to the door closer 13, which ensures secure closing of the door leaf from an open position to the closed position. The design of such door closers 13 is generally known, so it need not be discussed further here.

[0031] The locking device 12 now ensures that the door leaf 22 is securely but releasably locked in the Fig. 1. In this case, the force of the door closer 13 is therefore not sufficient to close the door leaf 22.

[0032] In the event of a fire, the locking device 12 now reacts in such a way that the locking force for holding the door in the open position is reduced to such an extent, in particular to zero, that the closing force of the door closer 13 is sufficient to be able to move the door leaf into the closed position.

[0033] In Fig. Figure 2 shows the functional structure of the holding-open system 10. The holding-open device 12 comprises a control unit 30 having a radio module 32. Furthermore, a holding element 34 is provided in the holding-open device 12, which applies the holding force to hold the door leaf 22 in the open position against the closing force of the door closer. Typically, the holding element 34 is a component that applies the holding force when it is supplied with energy. If the supplied energy is switched off, the holding force is typically reduced to a value of zero.

[0034] Such a locking element 34 can be, for example, a holding magnet, an electro-hydraulic valve, an electromechanical locking element, an electromagnetic locking element or a motor.

[0035] The locking device 12 is powered externally via a power supply 38, for which a connection 36, for example in the form of a plug-in contact, is provided. The power supply 38 can be a 24 V or 48 V power supply.

[0036] Alternatively, it would also be conceivable to equip the locking device 12 with a battery 39, which would then act instead of the power supply 38. This would have the advantage that the locking device 12 can operate independently of its own energy supply, thus eliminating the need for a connection to an external power supply 38.

[0037] From the Fig. 2 shows that the control device 30 controls the locking element 34. The simplest way to control the locking element 34 is to switch the energy supplied to it on and off. This means that when energy is supplied, the locking element 34 generates the holding force and no longer exerts any holding force when the energy is switched off.

[0038] Of course, it would also be conceivable to design the locking element 34 as a bistable locking element, in which case a time-limited pulse, in particular a voltage or current pulse, from the control device 30 is sufficient to switch the locking element 34.

[0039] The Fig. The hold-open system 10 shown in Figure 2 has various signaling devices 40, wherein such a signaling device 40 can be, for example, the lintel fire detector 14, the ceiling fire detector 18 or the manual release button 16.

[0040] The signal generator 40 has a radio module 44 and a power supply 46, for example in the form of a particularly replaceable battery 48. For reasons of clarity, the signal-generating control unit with the corresponding sensors themselves, which are designed, for example, to detect smoke, has not been shown.

[0041] The radio module 44 in a signal generator 40 is now designed to communicate with the radio module 32 of the locking device 12 via a radio connection 50. Known protocols as well as proprietary protocols can be used to establish such a radio connection. However, since this involves safety-relevant communication, the protocols used must meet the relevant safety standards.

[0042] In Fig. Figure 3 shows a further embodiment of a locking system 10, the difference from the previously explained locking system 10 being that a second locking device 12' also serves as a signal generator 40. In other words, the radio module 32 of the further locking device 12' communicates with the locking device 12 and can transmit corresponding signals, for example, alarm signals or control signals, which can be used by the control device 30 to control the locking element 34. This could be necessary, for example, with a double-leaf door to control the closing sequence.For example, a provided lintel fire detector 14 could send out an alarm signal as a signal generator 40 to both holding devices 12, 12', wherein then, via the communication between the two holding devices 12, 12', first one holding element 34 is activated and then, at a time offset, the other holding element 34. This can ensure that, in the case of a double-leaf door, first one door leaf closes and then, at a time offset, the other door leaf closes.

[0043] In contrast to previous solutions, the locking system 10, as used for example in Fig. 2, no longer has a triggering device. Rather, the locking device 12 itself contains all the necessary intelligence in the form of the control device 30, on the one hand to communicate with the signal transmitters 40, for example, via a radio connection 50, and on the other hand to control the locking element 34 in the event of an alarm in order to move the door leaf 22 from an open position to the closed position. At this point, it should be noted that in addition to the radio connection 50 shown, wired connections between the signal transmitter 40 and the control device 30 are of course also possible, even if the Fig. 2 is not shown.

[0044] The functionality of the Fig.The function of the holding device 12 shown in Figure 2 is as follows. The holding device 12 is supplied with energy, for example, via the energy supply 38. The supplied energy serves to operate the control device 30 and is used to operate the holding element 34 in a first mode, in which the holding force is applied. If a signal generator 40 detects, for example, smoke in an area to the left or right of the wall W, the radio module 44 of the corresponding signal generator 40 sends an alarm signal to the holding device 12 via the radio connection 50, which is received by the radio module 32. The control device 30 evaluates this received alarm signal and decides whether the holding element 34 needs to be switched to a second mode. In this second mode, the holding element 34 no longer exerts any holding force, which then results in the door leaf 22 being brought into the closed position via the door closer 13.It is understood that the communication between the radio modules 44 of the signal transmitter 40 and the radio module 32 of the locking device 12 can also be used for other purposes, such as safety purposes. For example, it is possible to detect the failure of a signal transmitter and, in this case, also control the locking element 34 accordingly.

[0045] The solution according to the invention allows for a simple construction of the hold-open system 10, since no wiring is required between the individual components. In particular, for example, the lintel fire detector 14 can be installed independently, i.e., without a cable connection, in the lintel area. Installation on the opposite wall side also poses no problem, since no drilling is required in the wall W for the necessary wiring. All that is required is that a radio connection is possible between the lintel fire detector 14 and the hold-open device 12. Since the door leaf 22 is normally held in the open position, the radio connection via the opening in the wall can usually be easily implemented.

[0046] Overall, it can be seen that the hold-open system according to the invention offers significant advantages over previous hold-open systems with separate triggering devices and hold-open devices. These advantages are particularly evident when the hold-open device 12 and the corresponding signaling devices 40 are arranged at a distance from each other. Such a case occurs, for example, when the hold-open device 12 and the door closer 13 are located in the floor and the lintel-mounted fire detector 14 is located in the upper lintel area of ​​the door 20.

Claims

[1] Locking system with at least one signal generator (40), and a locking device (12) which is designed to lock a leaf (22) of a door, a window or the like, in particular a fire or smoke protection door, in an open position in a first mode and to release the leaf in a second mode; characterized by , that the signal generator (40) has its own power supply (46) and a radio module (44); the locking device (12) has a control device (30), wherein the control device (30) comprises a radio module (32) which is designed to communicate with the radio module (44) of the signal generator (40), and wherein the control device (30) is designed to switch the locking device (12) from the first mode to the second mode depending on a signal from the signal generator (40) in order to release the door; and a power supply (38, 39) is assigned to the locking device (12). [2] Locking system according to claim 1, characterized by that the locking device (12) has at least one locking element (34), wherein in the first mode energy is supplied to the locking element (34) and in the second mode no energy is supplied to the locking element (34). [3] Locking system according to claim 1, characterized by that the locking device has at least one bistable locking element (34) which is designed to bring about a change from the first mode to the second mode by means of an energy pulse. [4] Locking system according to claim 2, characterized by that the locking element (34) is a holding magnet, an electro-hydraulic valve, an electromechanical locking element, an electromagnetic locking element or a motor. [5] Locking system according to one of the preceding claims, characterized bythat the at least one signal generator (40) is a lintel fire detector (14), a ceiling fire detector (18), in particular an optical smoke detector and / or a heat detector, an alarm contact of a fire alarm system, a fire gas sensor, a manual release button (16) or a control device (30) of another locking device (12'). [6] Locking system according to one of the preceding claims, characterized by that the energy supply (46) of the signal generator (40) is a battery (48), in particular a replaceable battery. [7] Locking system according to one of the preceding claims, characterized by that the locking device (12) is connected to a power supply (38), preferably an external power supply, preferably an electrical mains supply. [8] Locking system according to claim 7, characterized by that the locking device (12) is designed to be energy self-sufficient and has a battery (39) for energy supply. [9] Locking system according to one of the preceding claims, characterized by that several signal transmitters (40) are provided, each of which communicates with the control device via radio. [10] A locking device for a locking system for locking a leaf of a door, a window or the like, in particular a fire or smoke protection door, with a locking element (34) designed to lock the wing in an open position in a first mode and to release the wing in a second mode; a radio module (32) designed to communicate with external signal transmitters (40) and in particular to receive warning messages; and a control device (30) which is designed to set the locking element into the second mode upon receipt of an alarm message. [11] Locking device according to claim 10, characterized by a connection (36) for an electrical power supply. [12] Locking device according to claim 10, characterized by its own off-grid energy supply, in particular a battery (39). [13] Locking device according to claim 10, 11 or 12, characterized by that the locking element (34) can be switched into the first mode by supplying electrical energy and can be switched into the second mode by disconnecting the electrical energy. [14] Locking device according to claim 13, characterized by that the locking element (34) is designed as a bistable locking element and is designed to change from the first mode to the second mode by an energy pulse. [15] Locking device according to claim 13, characterized by that the locking element (34) is a holding magnet, an electro-hydraulic valve, an electromechanical locking element, an electromagnetic locking element or a motor.

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