LOCKING PLANT

Abstract

System (10) for holding a leaf of a door, window or the like, comprising a drive with at least one mechanical energy storage device which is charged by an opening movement of the leaf and discharged by a closing movement of the leaf, an electrical power supply (12), a holding device (14) with a permanent magnet unit (16) for holding the leaf, a release device (18) for releasing the holding device (14) and releasing the leaf, an emergency detection, in particular fire detection and a control device (20), wherein the release device (18) comprises n > 2 subsystems (18 i) each comprising at least one electrical coil (24) designed and / or controlled in such a way that compensation of the magnetic field of the permanent magnet unit (16) and thus triggering of the locking device (14) and release of the wing only occurs upon simultaneous activation of at least N of these subsystems (18) i ) by the control device (20), where 2 ≤ N < n and N is a natural number, while with activation of a single subsystem (18 i ) or less than N subsystems (18 i ) only a part of the magnetic field of the permanent magnet unit (16) can be compensated.

Description

[0001] The invention relates to a device for holding a sash of a door, window, or the like in the open position, comprising a drive with at least one mechanical energy storage device which is charged by an opening movement of the sash and discharged by a closing movement of the sash. The invention further relates to a method for holding a sash of a door, window, or the like in the open position.

[0002] A hold-open device is a system for keeping fire doors, such as fire doors, smoke doors, and similar doors, open. It ensures that fire doors or smoke doors remain open, but close securely in the event of a fire or smoke development.

[0003] Among other things, hold-open systems are known that keep an open fire door permanently open against the spring force of a mechanical actuator. In the event of a fire, the hold-open system is triggered, whereupon the door closes due to the spring force. A hold-open system typically includes an electrical power supply, a hold-open device, a release mechanism, and a fire detection system.

[0004] Door closers or actuators for movable door leaves with a mechanical energy storage device are also common. When the door leaf is opened manually, the mechanical energy storage device is charged with potential energy, which then closes the released leaf. The mechanical energy storage device can, for example, include a spring unit that is tensioned by manually opening the door leaf and relaxes again when the door leaf closes.

[0005] A hold-open device of the type mentioned above is described, for example, in EP 3 064 692 A1. In this hold-open device, which operates on the closed-circuit principle, the hold-open device holds the door leaf open against the closing torque of the door closer's mechanical energy storage device as long as the hold-open device is supplied with electrical energy. If the release device cuts off the energy supply or the mains power fails, the hold-open device releases, whereupon the door leaf is closed via the mechanical energy storage device. A disadvantage of this known hold-open device, however, is that it requires a continuous supply of electrical energy to hold the door leaf in the open position. This means, for example, that self-sufficient battery operation of the hold-open device is not possible.

[0006] Furthermore, the previously common locking systems, which operate according to the working current principle, require a continuous power of approximately 1 watt to 2 watts, depending on the locking device, which is converted into heat, thus representing a noticeable power loss.

[0007] Locking devices operating according to the quiescent current principle are already known, and in particular locking devices with a permanent magnet for locking and a coil arrangement for compensating the magnetic field of the permanent magnet and thus for triggering the locking.

[0008] In a hold-open device based on the closed-circuit principle, for example, the magnetic field of a current-carrying coil compensates for the magnetic field of the permanent magnet for a short time, allowing the door closer to close the door leaf. As soon as the door leaf or a sliding block guided in a track has released the hold-open device, the current flow through the coil is switched off again.

[0009] Bistable locking devices with an arrangement of permanent magnet spring coils are also known (see, for example, DE 10 2010 061 246 A1). In this case as well, switching between the two stable positions is actively carried out by means of electrical energy. Thus, such a conventional bistable locking device requires a short energy pulse to switch the locking device from a locking state to a releasing state and vice versa.

[0010] To ensure that a holding-open device triggers reliably even in the event of a fault, such as a fault in the electrical circuit, a broken wire in the coil, or similar, the holding device of the holding-open device known from EP 3 064 692 A1 has at least two independent subsystems, wherein the holding device of each subsystem can be moved from the holding to the releasing state independently of the holding device of at least one other subsystem. A disadvantage of this design, however, is that the holding device requires two subsystems for a fail-safe triggering mechanism, each of which must be capable of triggering the holding device independently.Regarding the electronic control and design of the various components, especially coils (copper, conductor cross-section), at least twice as much effort must be installed as is actually required to trigger the locking device, which entails correspondingly higher costs and a greater need for space.

[0011] Furthermore, in such a conventional locking system, at least one additional independent subsystem must be installed to achieve higher fault tolerance, which can trigger the locking device on its own, resulting in additional costs and space requirements.

[0012] Another locking or holding device for a wing system is known from EP 3 064 687 A1.

[0013] The invention is based on the objective of providing a system and a method of the type mentioned above in which the aforementioned problems are eliminated. In particular, with reduced effort and space requirements with regard to the necessary design and performance of the various components of the release device, with higher fault tolerance without additional effort, and with simpler testing of the release device, while avoiding the risk of unintentional triggering, the reliable release of the locking device in an emergency, such as in the event of a fire, is to be ensured.

[0014] According to the invention, this problem is solved by a system with the features of claim 1 and a method with the features of claim 16. Preferred embodiments of the system according to the invention are described in the dependent claims, the present description, and the drawing.

[0015] The inventive device for holding a wing of a door, window or the like in the open position comprises a drive with at least one mechanical energy storage device which is charged by an opening movement of the wing and discharged by a closing movement of the wing, an electrical power supply, a holding device with a permanent magnet unit for holding the wing in the open position, a release device for releasing the holding device and releasing the wing, an emergency detection device, in particular a fire detection device and a control device.According to the invention, the release device comprises n > 2 subsystems, each with at least one electrical coil, which are designed and / or whose control is configured such that compensation of the magnetic field of the permanent magnet unit, and thus release of the locking device and release of the wing, only occurs when at least N of these subsystems are simultaneously activated by the control device, where 2 ≤ N < n and N is a natural number, while with activation of a single subsystem or fewer than N subsystems, only a part of the magnetic field of the permanent magnet unit can be compensated.

[0016] The release mechanism thus comprises n relatively smaller, dependent subsystems, each of which, considered individually, only compensates for a portion of the magnetic field of the permanent magnet unit. Therefore, the locking mechanism cannot be released by a single subsystem or by fewer than N subsystems. The locking mechanism releases only when at least N subsystems are activated simultaneously, where N is a natural number and the condition 2 ≤ N < n is satisfied.

[0017] This design results in reduced effort, particularly regarding the required configuration and performance of the various components and subsystems of the release device. The space requirement is also correspondingly reduced. Furthermore, a higher fault tolerance is achieved without significant additional effort. Testing of the release device is also simplified, thus avoiding the risk of unintentional activation. Finally, in an emergency, such as a fire, reliable release of the locking device is guaranteed.

[0018] For example, for N = 3 and n = 4, a tolerance to a single fault in a subsystem is achieved. The required system design in such a case is 4 / 3 smaller, a factor of 2 / 3, than for a conventional hold-open system with two independent subsystems. For example, for n = N + k, where k is a natural number, a k-fold fault tolerance is easily achieved.

[0019] The subsystems can be constructed identically and designed with the same performance, or they can be constructed differently, at least partially, and designed with different performance characteristics.

[0020] Preferably, the functionality of the subsystems can be monitored by the control device.

[0021] The functionality of the subsystems can be monitored by the control device at predefined time intervals, e.g. every 24 hours, or continuously.

[0022] According to a practical embodiment of the system according to the invention, the control device for monitoring the functionality of the subsystems can evaluate the total current of all electrical coils of the subsystems. Alternatively or additionally, the control device for monitoring the functionality of the subsystems can also, for example, evaluate the sum of the individual measured currents of the electrical coils of the subsystems.

[0023] Preferably, the subsystems for monitoring their functionality can be controlled by the control unit in such a way that the relevant test current is kept so small and / or for such a short time that the holding device is not triggered and the wing is not released. Testing the release device is thus significantly simplified compared to previously known holding-open systems.

[0024] In certain cases, it is also advantageous if the subsystems for monitoring their functionality can be controlled sequentially by the control unit. In this case, the individual subsystems can be controlled, in particular with the operating or partial trip current, without triggering the locking device.

[0025] Preferably, the locking device can be triggered in the event of a fault.

[0026] For example, if the measured current through the coil of a subsystem is smaller than the test or partial trip current, this is considered an error, whereupon the control device triggers the locking device.

[0027] Advantageously, the system includes a monitored, redundant electrical power supply. For example, it can be equipped with both a mains power supply and a battery supply. However, designs with only a mains power supply or only a battery supply are also conceivable. In the case of a self-sufficient electrical power supply, at least two batteries are preferably provided.

[0028] If a battery is sufficiently discharged, this can also be considered an error, whereupon the control unit can trigger the locking device again.

[0029] The drive unit, which includes at least one mechanical energy storage device, can in particular comprise a door closer.

[0030] Advantageously, the control device comprises at least one microcontroller and preferably a switch arrangement via which the subsystems of the locking device can be controlled by the microcontroller.

[0031] The subsystems can advantageously be controlled individually, in groups and / or as a whole via this control device.

[0032] The inventive method for holding a sash of a door, window or the like in the open position, in which at least one mechanical energy storage device is charged by an opening movement of the sash and discharged by a closing movement of the sash, is characterized in that the sash is held in the open position by a permanent magnet unit of a holding device and the holding device is triggered to release the sash via a release device, wherein the triggering of the holding device is effected by means of a release device with n > 2 subsystems, each with at least one electrical coil, which are designed and / or whose control is configured such that compensation of the magnetic field of the permanent magnet unit, and thus triggering of the holding device and release of the sash, only occurs upon simultaneous activation of at least N of these subsystems, wherein 2 ≤ N < n and N is a natural number.whereas with the activation of a single subsystem or fewer than N subsystems, only a portion of the magnetic field of the permanent magnet unit can be compensated.

[0033] The invention is described in more detail below with reference to an exemplary embodiment and the drawing. The single figure in the drawing schematically shows an exemplary embodiment of a device 10 for securing a wing of a door, window, or the like.

[0034] The system 10 comprises a (not shown) drive with at least one mechanical energy storage device which is charged by an opening movement of the wing and discharged by a closing movement of the wing, an electrical power supply 12, a holding device 14 with a permanent magnet unit 16 for holding the wing in place, a release device 18 for releasing the holding device 14 and releasing the wing, an emergency detection device and a control device 20.

[0035] The electrical power supply 12 is specifically intended to supply the control unit 20 with electrical energy. In an emergency, such as a fire, a release signal 22 can be supplied to the control unit 20, whereupon the locking device 14 is triggered via the control unit 20.

[0036] The triggering device 18 comprises n > 2 subsystems 18 ieach with at least one electrical coil 24, wherein these subsystems 18 i are designed in such a way and / or their control device 20 is designed such that compensation of the magnetic field of the permanent magnet unit 16 and thus triggering of the locking device 14 and release of the wing only occurs upon simultaneous activation of at least N of these subsystems 18 i by the control device 20, where 2 ≤ N < n and N is a natural number, while with the activation of a single subsystem 18 i or less than N subsystems 18 i Only a part of the magnetic field of the permanent magnet unit 18 can be compensated.

[0037] Subsystems 18 iThe release device 18 can be constructed identically and designed with identical performance characteristics, or at least partially constructed differently and, in particular, designed with different performance characteristics.

[0038] The functionality of subsystems 18 i can be monitored by the control unit 20. The functionality of the subsystems 18 can be monitored in this way. i for example, it can be monitored at predefined time intervals such as every 24 hours or continuously by the control unit 20.

[0039] To monitor the functionality of subsystems 18 i The control device 20 can determine the total current of all coils 24 of the subsystems 18. i and / or the sum of the individual measured currents of the electrical coils 24 of the subsystems 18 i be evaluable.

[0040] Subsystems 18 iFor monitoring their functionality, the control device 20 can be controlled in such a way that the relevant test current is kept so small and / or so short in time that the locking device is not triggered and the wing is not released.

[0041] To monitor their functionality, the subsystems 18 can be used. i The control unit 20 can, for example, also be controlled sequentially over time. In this case, the testing of the individual subsystems 18 i also with the respective operating or partial release current, without the locking device 14 being triggered.

[0042] Furthermore, the control device 20 can be designed such that the locking device 14 is triggered in the event of a fault.

[0043] As an electrical power supply 12, in particular a monitored redundant electrical power supply can be provided.

[0044] In principle, the electrical power supply 12 can comprise a mains supply and / or a battery supply. For appropriate redundancy, for example, both a mains supply and a battery supply can be provided. For a self-sufficient electrical power supply, the power supply 12 in question can, in particular, comprise at least two batteries.

[0045] The drive with at least one mechanical energy storage device, the discharge of which closes the wing after each activation of the locking device 14, can, for example, include a door closer.

[0046] The control device 20 can, as shown, in particular comprise at least one microcontroller 26 and in particular a switch arrangement 28, via which the subsystems 18 i the locking device 14 can be controlled by the microcontroller 26. Reference symbol list 10 Locking system 12 electrical power supply 14 Locking device 16 permanent magnet unit 18 Trigger device 18 i Subsystem 20 Control unit 22 Trigger signal 24 coil 26 microcontrollers 28 Circuit arrangement

Claims

[1] System (10) for holding a leaf of a door, window or the like, comprising a drive with at least one mechanical energy storage device which is charged by an opening movement of the leaf and discharged by a closing movement of the leaf, an electrical power supply (12), a holding device (14) with a permanent magnet unit (16) for holding the leaf, a release device (18) for releasing the holding device (14) and releasing the leaf, an emergency detection, in particular fire detection and a control device (20), wherein the release device (18) comprises n > 2 subsystems (18 i) each comprising at least one electrical coil (24) designed and / or controlled in such a way that compensation of the magnetic field of the permanent magnet unit (16) and thus triggering of the locking device (14) and release of the wing only occurs upon simultaneous activation of at least N of these subsystems (18) i ) by the control device (20), where 2 ≤ N < n and N is a natural number, while with activation of a single subsystem (18 i ) or less than N subsystems (18 i ) only a part of the magnetic field of the permanent magnet unit (16) can be compensated. [2] Plant according to claim 1, characterized by , that the subsystems (18 i ) are constructed identically and designed with identical performance in mind. [3] Plant according to claim 1, characterized by , that the subsystems (18 i) are at least partially structured differently and, in particular, are designed at least partially differently with regard to their performance. [4] Plant according to at least one of the preceding claims, characterized by , that the functionality of the subsystems (18i) can be monitored by the control device (20). [5] Plant according to claim 4, characterized by , that the functionality of the subsystems (18 i ) can be monitored by the control device (20) at predefinable time intervals. [6] Plant according to claim 4, characterized by , that the functionality of the subsystems (18 i ) can be continuously monitored by the control device (20). [7] Plant according to at least one of the preceding claims, characterized by , that the control device (20) for monitoring the functionality of the subsystems (18i) determines the total current of all electrical coils (24) of the subsystems (18 i) can be evaluated. [8] Plant according to at least one of the preceding claims, characterized by , that the control device (20) for monitoring the functionality of the subsystems (18) i ) the sum of the individually measured currents of the electrical coils (24) of the subsystems can be evaluated. [9] Plant according to at least one of the preceding claims, characterized by , that the subsystems (18 i ) to monitor their functionality by the control device (20) in such a way that the relevant test current is kept so small and / or so short in time that the locking device (14) is not triggered and the wing is not released. [10] Plant according to at least one of the preceding claims, characterized by , that the subsystems (18 i) to monitor their functionality by the control device (20) successively, in particular with the operating or partial tripping current. [11] Plant according to at least one of the preceding claims, characterized by , that the locking device (14) can be triggered in the event of a fault. [12] Plant according to at least one of the preceding claims, characterized by , that a monitored redundant electrical power supply (12) is provided. [13] Plant according to at least one of the preceding claims, characterized by , that the electrical power supply (12) comprises a mains supply and / or a battery supply and / or a self-sufficient electrical power supply (12) with at least two batteries. [14] Plant according to at least one of the preceding claims, characterized by that the drive includes a door closer. [15] Plant according to at least one of the preceding claims, characterized by that the control device (20) comprises at least one microcontroller (26) and preferably a switch arrangement (28) via which the subsystems (18) i ) the locking device (14) can be controlled by the microcontroller (26). [16] Method for holding and releasing a leaf of a door, window or the like, in which at least one mechanical energy storage device is charged by an opening movement of the leaf and discharged by a closing movement of the leaf, the leaf is held in place by a permanent magnet unit (16) of a holding device (14) and the holding device (14) is released to release the leaf via a release device (18), wherein the release of the holding device (14) is effected by means of a release device (18) with n > 2 subsystems (18 i) with at least one electrical coil (24) each, which are designed and / or whose control is designed such that compensation of the magnetic field of the permanent magnet unit (16) and thus triggering of the locking device (14) and release of the wing only occurs upon simultaneous activation of at least N of these subsystems (18) i ) where 2 ≤ N < n and N is a natural number, while with activation of a single subsystem (18 i ) or less than N subsystems (18 i ) only a part of the magnetic field of the permanent magnet unit (16) can be compensated.

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