Locking device for a door, a 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 hold-open system with at least one signal transmitter and a hold-open device, designed to hold 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. The invention further relates to a hold-open device for the aforementioned hold-open system.

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

[0003] Hold-open systems typically consist of a power supply, a fire detection system (e.g., a ceiling-mounted fire detector), a release device, and a hold-open device. Figure 4A schematic representation of such a hold-open system is shown. Several signal transmitters, for example, a ceiling-mounted detector or a manual release button, are connected to the release device, either wirelessly via a radio module or via a wired connection. In this example, the release device also includes a door jamb fire detector mounted in the door jamb 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 typically holds the door leaf in its open position when energized. In the event of a fire, the release device receives an alarm signal, for example, from the ceiling-mounted detector or the door jamb fire detector, and activates a switching element, such as 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, in particular the release device and the hold-open device, are connected via cables. However, hold-open systems like the one described in [reference to relevant article] are also known on the market. Fig. 4 shown, with wireless ceiling detectors and wireless manual release buttons that communicate with the release device via radio.

[0005] DE10 2010 061 385 A1 relates, for example, to a hold-open device for a door comprising a door operator for opening or closing the door, a mains-voltage-independent, preferably battery-operated signal transmitter (in particular a fire or smoke detector) designed to send a first signal, a release device designed to receive the first signal and send a second signal, and a mains-voltage-independent, preferably battery-operated, hold-open device designed to hold the door in the closed or open position, which releases the door upon receiving the second signal so that the door operator can open or close the door. This hold-open device uses a separate release device, which acts as a central component, to receive signals from the signal transmitter and then send a second signal to the hold-open device.

[0006] 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.

[0007] Although the aforementioned hold-open systems have proven effective in practice, they do have certain disadvantages in specific 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 for the cable connection. This is an additional expense, especially considering that drill holes in fire walls require complex sealing.

[0008] 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 door's smoke detector and release mechanism on the other. The wiring must run from the floor to the door's lintel.

[0009] If, for example, the release device and the drop-down fire alarm are mounted on the cover of a fire door operator, and the other components of the hold-open system are located underneath the cover, the installer must disconnect the cable connection before removing the cover. Particularly with fire-resistant sliding door operators, the covers are several meters long, making this task difficult for one person to perform alone.

[0010] Even in the case of compact holding systems, where all components are housed under one hood and in close proximity to each other, the release device and the holding device must be connected via cables, which takes up space and makes it difficult to replace components in the event of a repair.

[0011] Against this background, the object of the present invention is to further develop the aforementioned type of hold-open system in such a way that it no longer exhibits the aforementioned disadvantages. In particular, the hold-open system, with its individual components, should be able to be set up more flexibly with minimal wiring effort.

[0012] This task is solved in the aforementioned hold-open system by the fact that the signal transmitter has its own power supply and a radio module, the hold-open device has a control unit, wherein the control unit includes a radio module designed to communicate with the radio module of the signal transmitter, and wherein the control unit is designed to switch the hold-open device from the first mode to the second mode in order to release the door, depending on a signal from the signal transmitter, and that the hold-open device has an associated power supply.

[0013] In other words, the hold-open device becomes "intelligent" and is no longer controlled solely by switching the power supply on and off. The control unit within the hold-open device communicates with signal transmitters 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 lacks the previously required release mechanism, which significantly reduces the potential wiring effort. The hold-open device according to the invention only needs to be connected to a power supply to become operational. The signal transmitters themselves have their own power supply and can thus communicate with the hold-open device, and in particular the control unit, via a radio module.

[0014] In contrast to the holding arrangement described in DE10 2010 061 385 A1, the solution according to the invention provides direct communication between the signal transmitter and the holding device, wherein the control unit of the holding device itself evaluates the received signals and initiates the necessary measures to release the door. This results in a simplified system that does not require an additional release device. This difference leads to reduced complexity of the overall design and simpler installation, particularly in scenarios where wireless communication between the components is required. The holding device according to the invention does not require a separate release device to control the switching of the holding device between modes. The control unit integrated into the holding device performs this task directly.

[0015] The problem is thus completely solved.

[0016] In a preferred embodiment, the locking device comprises at least one locking element, wherein energy is supplied to the locking element in the first mode and no energy is supplied to the locking element in the second mode. Preferably, a holding magnet, an electrohydraulic valve, an electromechanical detent element, an electromagnetic detent 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.

[0017] In an alternative design, 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; a brief current or voltage pulse is sufficient to release the door.

[0018] In a preferred further development, the signal transmitter is a drop-down fire detector, a ceiling-mounted 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 unit of another holding device.

[0019] In other words, any signal transmitter can be equipped with a radio module to communicate wirelessly with the control unit or its radio module. In specific applications, it is also conceivable that the control unit of another holding device acts as the signal transmitter, for example, in the case of double-leaf doors or sliding doors. This allows, in particular, influence on the closing sequence of two door leaves.

[0020] In a preferred training model, the signal transmitter is powered by a battery, specifically a replaceable battery. This measure has proven particularly advantageous in terms of flexibility and longevity.

[0021] 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 self-sufficient, comprising a battery for power supply. The battery can preferably be replaceable.

[0022] In particular, the solution with a battery to power the locking device is especially advantageous with regard to the installation effort, as wiring for the electrical power supply is completely eliminated.

[0023] In a preferred training system, several signal transmitters are provided, each communicating wirelessly with the control unit. This measure has the advantage that a hold-open system with a large number of signal transmitters at various room locations can be implemented without any wiring effort.

[0024] The problem underlying the invention is also solved by a locking device which has a locking element designed to lock the wing in an open position in a first mode and to release the wing in a second mode, has a radio module designed to communicate with external signal transmitters and in particular to receive alarm messages, and has a control device designed to put the locking element into the second mode upon receipt of an alarm message.

[0025] This locking device has the same advantages as the previously mentioned locking system, so a further version is unnecessary at this point.

[0026] 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 connector. Alternatively, it is also conceivable to equip the locking device with its own independent internal power supply, preferably a battery.

[0027] In the preferred embodiment, the locking element can be switched to the first mode by supplying electrical energy and to the second mode by disconnecting the electrical energy. If a bistable locking element is used, the supplied electrical energy does not need to be completely switched off; a short energy pulse is sufficient to switch from one mode to the other.

[0028] It is understood that the features mentioned above and those to be explained below can be used not only in the combinations specified, but also in other combinations or on their own, without leaving the scope of the present invention.

[0029] Further advantages and embodiments of the invention will become apparent from the description and the accompanying drawing. These show: Figure 1 is a schematic representation of an application of a hold-open system; Figure 2 is a schematic block diagram to explain a hold-open system according to the invention; Figure 3 is a schematic block diagram of the hold-open system of Figure 2 , wherein a signal transmitter is a locking device of another locking system; and Figure 4 is a schematic block diagram of a locking system from the prior art.

[0030] In Figure 1Figure 1 shows a section of a building with a corridor divided into two areas by a fire wall W. An opening is provided in the wall W, in which a door 20, specifically a fire door 20, is provided to separate the two areas. It should be noted that the door 20 represents any building element that can be used to control the opening and closing of an opening in a wall W. Such building elements could include, for example, windows, skylights, single or double doors, or single or double sliding doors.

[0031] For example, to close a door leaf 22 of door 20 in the event of a fire, 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 drop-down fire alarm 14, a manual release button 16, and a ceiling-mounted fire alarm 18. As can be seen from the Figure 1As a result, the two manual release buttons 16 and the ceiling-mounted fire detectors 18 are also provided in both areas to the left and right of wall W. The lintel fire detector 14, on the other hand, 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 wall W.

[0032] The door leaf 22 is connected to the hold-open device 12 and the door closer 13 via a sliding arm 24. One longitudinal end of the sliding arm 24 is guided in a guide 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 safe 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 described in further detail here.

[0033] The locking device 12 now ensures that the door leaf 22 is securely, but releasably, held in the position in Figure 1 The door is held in the open position shown. Therefore, the force of the door closer 13 is insufficient to close the door leaf 22 in this case.

[0034] In the event of a fire, the holding device 12 reacts in such a way that the holding force for keeping 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 bring the door leaf into the closed position.

[0035] In Figure 2The functional structure of the hold-open device 10 is now shown. The hold-open device 12 comprises a control unit 30, which includes a radio module 32. Furthermore, a hold-open element 34 is provided in the hold-open device 12, which applies the holding force to keep the door leaf 22 in the open position against the closing force of the door closer. Typically, the hold-open element 34 is a component that applies the holding force when it is energized. When the energized power is switched off, the holding force is usually reduced to zero.

[0036] Such a locking element 34 could, for example, be a holding magnet, an electrohydraulic valve, an electromechanical locking element, an electromagnetic locking element or a motor.

[0037] 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 contact, is provided. The power supply 38 can be a 24 V or 48 V voltage supply.

[0038] 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 could operate independently of its own power supply, so that a connection to an external power supply 38 would not be necessary.

[0039] From the Figure 2It is evident that the control unit 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 when the energy supply is switched off, it no longer exerts a holding force.

[0040] 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.

[0041] The in Figure 2 The holding system 10 shown has various signal transmitters 40, such a signal transmitter 40 can be, for example, the drop fire detector 14, the ceiling fire detector 18 or the manual release button 16.

[0042] The signal transmitter 40 includes a radio module 44 and a power supply 46, for example in the form of a replaceable battery 48. For the sake of clarity, the signaling control unit with the corresponding sensors itself, which are designed, for example, to detect smoke, has not been shown.

[0043] The radio module 44 in a signal transmitter 40 is designed to communicate with the radio module 32 of the locking device 12 via a radio link 50. Both known and proprietary protocols can be used to establish such a radio link. However, since this is safety-relevant communication, the protocols used must comply with the relevant safety standards.

[0044] In Figure 3Figure 10 shows a further embodiment of a hold-open system 10, the difference being that a second hold-open device 12' also serves as a signal transmitter 40. In other words, the radio module 32 of the second hold-open device 12' communicates with the hold-open device 12 and can transmit corresponding signals, such as alarm signals or control signals, which can be used by the control unit 30 to actuate the hold-open element 34. This could be necessary, for example, with a double-leaf door to control the closing sequence.For example, a provided drop-down fire detector 14 could send an alarm signal 40 to both hold-open devices 12, 12', whereby, via communication between the two hold-open devices 12, 12', first one hold-open element 34 is activated and then, after a time delay, the other hold-open element 34. This ensures that, in the case of a double-leaf door, one leaf closes first and then, after a time delay, the other leaf closes.

[0045] In contrast to previous solutions, the locking system 10, as used for example in Figure 2As shown, there is no longer a release mechanism. Rather, the holding device 12 itself contains all the necessary intelligence in the form of the control unit 30 to communicate with the signal transmitters 40, for example via a radio link 50, and, in the event of an alarm, to activate the holding element 34 to move the door leaf 22 from an open position to the closed position. It should be noted here that, in addition to the radio link 50 shown, wired connections between the signal transmitter 40 and the control unit 30 are of course still possible, even if this is shown in the diagram. Figure 2 not shown.

[0046] The functioning of the in Figure 2The hold-open device 12 shown is now as follows. The hold-open device 12 is supplied with energy, for example, via the power supply 38. The supplied energy is used to operate the control unit 30 and is used to operate the hold-open element 34 in a first mode, in which the holding force is applied. If a signal transmitter 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 transmitter 40 sends an alarm signal to the hold-open device 12 via the radio link 50, which is received by the radio module 32. The control unit 30 evaluates this received alarm signal and decides whether the hold-open element 34 must be switched to a second mode. In this second mode, the hold-open element 34 no longer exerts a holding force, which then causes the door leaf 22 to be brought into the closed position by the door closer 13.It is understood that the communication between the radio modules 44 of the signal transmitters 40 and the radio module 32 of the locking device 12 can also be used for other purposes, for example, safety purposes. For instance, it is possible to detect the failure of a signal transmitter and, in this case, to control the locking element 34 accordingly.

[0047] 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, the door fire detector 14, for example, can be installed independently, i.e., without a cable connection, in the lintel area. Installation on the opposite side of the wall also presents no problem, since no drilling into the wall W is required for the necessary wiring. It is only necessary that a wireless connection between the door fire detector 14 and the hold-open device 12 is possible. Since the door leaf 22 is normally held in the open position, the wireless connection via the opening in the wall is usually easily established.

[0048] Overall, it is evident that the hold-open system according to the invention offers significant advantages over previous hold-open systems with separate release devices and hold-open devices. These advantages are particularly evident when the hold-open device 12 and the corresponding signal transmitters 40 are arranged remotely. Such a case arises, for example, when the hold-open device 12 and the door closer 13 are located in the floor and the door fire alarm 14 is located in the upper lintel area of ​​the door 20. Reference symbol list

[0049] 10 Hold-open system 12 Hold-open device 12'Second hold-open device 13 Door closer 14 Drop fire alarm 16 Manual release button 18 Ceiling fire alarm 20 Door, in particular fire door 22 Door leaf 24 Sliding arm 26 Guide rail 30 Control unit 32 Radio module of the hold-open device 34 Hold-open element 36 Connection for electrical power supply 38 External power supply of the hold-open device 39 Battery of the hold-open device 40 Signal transmitter 44 Radio module of the signal transmitter 46 Power supply of the signal transmitter 48 Battery of the signal transmitter 50 Radio connection between signal transmitter and hold-open device W Fire wall

Claims

1. A locking system with at least one signal transmitter (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 in 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 in order to release the door depending on a signal from the signal generator (40); and a power supply (38, 39) is assigned to the locking device (12).

2. Locking system according to claim 1, characterized in thatthe 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 in 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 in 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 in thatthe 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 in that the power 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 in 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 in 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 in 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, comprising a locking element (34) designed to lock the leaf in an open position in a first mode and to release the leaf 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) designed to set the locking element to 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 in 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 in 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 in 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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