EP3245371B1 - Emergency device to secure a door in escape and rescue routes - Google Patents

Description

The invention relates to a security device for securing a door according to the features of the preamble of claim 1.

In practice, such security devices are used to secure a door in escape and rescue routes from buildings in order to secure doors in their closed position, in particular to lock them and thus to protect them against break-ins. At the same time, safety devices are intended to make it easy and convenient for an authorized person to access the door or in the event of an emergency. Especially in the event of a panic, it must be possible to safely open the door for everyone in order to escape from a building. The EP 2 192 562 A1 shows such a safety device.

From the EP 1 473 431 A1 a door closing device for a fire door with a freewheel normal operation is known. It is a Door closer, the locking mechanism of which has a one-way clutch in order to open the door in normal operation with as little force as possible. For this purpose, the freewheel function is switched on and disengages the locking mechanism so that the door can be opened and closed without being influenced by the door closer. For this purpose, an electrically actuable valve is provided, which influences a damper oil flow of the door closer. In the event of a fire alarm, the one-way clutch is automatically deactivated and the closing mechanism of the door closer is effective to automatically move the door into the closed position.

From the DE 10 2010 022 049 A1 a door closer with a freewheel function is known. This door closer can also be used to secure fire doors, whereby in normal operation the door can be conveniently accessed via the free-wheel function without having to work against the force of the door closer when the door is opened. In the event of a fire, the door closer is automatically activated and moves the door into the closed position.

EP 2 472 042 A2 discloses a safety device according to the preamble of claim 1.

It is an object of the present invention to provide a security device for a door which can be used in escape and rescue routes and is also suitable for smoke protection or fire protection applications. A high level of user comfort and, at the same time, a high level of security should be ensured. In particular, the safety device should be compact and easy to assemble.

This object is achieved by a safety device with the features of claim 1.

According to the invention, it is provided that the securing device has a locking device and a door closer with an electrically switchable freewheel device which switchably prevents and / or releases a force transmission of the closer spring to the linkage at least in a closing direction and / or an opening direction. Furthermore, it includes a safety device, a control device which is connected to the switchable locking device and the switchable freewheel device and is designed such that it switches the locking device and the switchable freewheel device separately. The safety device thus has a door closer with an electrically switchable freewheel device and additionally a switchable locking device which can be switched separately via a control device. This enables the safety device not only to safely move a door in the closed position in the event of a fire, but also to lock it in the closed position. This ensures good fire protection or smoke protection. Nevertheless, an emergency opening function is provided, which allows the door to be opened and opened safely at any time in the event of a panic.

When the freewheel is activated, a door leaf can be operated manually via the switchable freewheel device without any counterforce from the door closer. This means that there is no need to overcome increased resistance by a door closer to open and / or close the door. The door or the door leaf can be moved with relatively little effort when the freewheel device is activated. When the freewheel device is deactivated, the door closer acts on the door leaf in the closing direction in order to move it into the closed position. It is possible to open the door leaf at any time against the force of the door closer when the freewheel device is deactivated. When the door leaf is opened, the closer of the door closer is charged.

It is envisaged that the securing device can be used to secure a door, preferably a fire door or escape door, in escape and rescue routes. It has at least one door wing designed as a swivel or swing wing, which is rotatably mounted on hinges on a stationary door frame. In addition, the securing device has a door closer, which is designed as a door drive and has a closer spring and a drive shaft in a door closer housing or drive housing, which interacts with a force-transmitting linkage, preferably scissor arm linkage or slide arm linkage, arranged between the door leaf and the stationary frame of the door. to press the door leaf towards its closed position. The door drive of the door closer is designed as a spring drive. Has a closer spring acting on a closer shaft. In particular, the door drive has no electric motor.

In order to be able to safely open the security device in the event of an emergency or panic, it is provided that a switch panel or an RWS terminal, ie an escape route security terminal with an emergency button, is arranged in the area of the door. Furthermore, the securing device has a switchable locking device which locks and / or unlocks the door leaf in an electrically switchable manner in its closed position. It is provided that in an emergency or in the event of panic, the locking device and thus the door leaf can be unlocked at any time via the RWS terminal or the emergency button. This ensures that the door can be opened safely at all times and can thus serve as a safe escape route.

The control device is connected to the switchable lock and the switchable freewheel device and can switch both the locking device and the switchable freewheel device separately. This enables universal use of the safety device. The locking device and / or the freewheel device can be switched, for example, by the control device having two different switching outputs. One switching output each is connected to the locking device and the other switching output is connected to the freewheel device. In particular, the control device can, for example, switch the freewheel device to close the door leaf in the event of a fire and / or switch the locking device to unlock the door leaf in the event of panic. In particular, the security device for escape doors and fire doors can be used equally. It is not necessary to change the mechanical design or the electronic control. The control device can be designed such that it deactivates or switches off the freewheel device in the event of a fire alarm or fire alarm in order to bring the door leaf into its closed position via the closer spring. Optionally, the control device can lock the door leaf in its closed position via the locking device.

In the event of a panic alarm, the control device can release the locking device and / or activate or switch on the free-wheeling device in order to hold the door leaf in an open position or to enable the door leaf to be opened with little effort.

It is advantageous that the securing device enables a door to be mechanically secured, which serves as a fire protection door and as an escape route door of a building and at the same time ensures accessibility, since the secured door can be opened with a relatively small amount of force.

In one embodiment it can be provided that the control device has a bus interface and that both the locking device and the freewheel device are connected to the control device via a bus system and the bus interface. It is provided that the control device addresses the locking device directly via switching commands and controls it to lock and / or unlock the door. Likewise, the control device can address the freewheel device separately via the bus system and / or the bus interface and specifically control it to switch the freewheel device on and / or off.

In one embodiment it can be provided that the locking device and / or the freewheel device and / or the door closer have their own bus interface. This can be embodied or arranged in an integrated manner in the locking device and / or the free-wheeling device and / or the door closer, that is to say it can be arranged in the immediate vicinity of the locking device and / or the free-wheeling device and / or the door closer. It is also possible that the respective bus interface is connected to the locking device and / or the free-wheeling device and / or the door closer and or is connected to a component of the locking device and / or the free-wheeling device or the door closer.

The locking device can be designed as a locking device to be mounted separately on or on or in the door leaf, for example as a magnetic or electromechanical escape route lock or as a controllable mortise lock, in particular a motor lock.

In one embodiment, the locking device can be integrated into the door closer. In particular, be integrated into the housing of the door closer and cooperate with a gear element of the door closer, for example a drive shaft or hydraulic channel or piston, in order to block an opening movement and a closing movement of the door closer.

In one embodiment, it can be provided that the control device has a first input for connecting a smoke detector and / or fire detector and / or a fire alarm center and / or a building control center and a second input for connecting the emergency button and / or the RWS terminal. The control device thus has separate inputs, the first input preferably being designed as a fire alarm or fire alarm input and the second input being designed as a panic or emergency alarm. One or more sensors or detectors can be connected to the inputs.

In one embodiment, it can be provided that the control device is arranged in the RWS terminal, preferably in an installation space enclosed by a housing of the RWS terminal. Alternatively, it can also be provided that the control device within the Drive housing of the door closer arranged or is mechanically fixed to the drive housing of the door closer.

A particularly simple installation is obtained by providing that the control device has a bus interface for a digital bus, preferably CAN bus or LIN bus, and the emergency button and / or the RWS terminal and / or the switchable freewheel device and / or a smoke or fire detector and / or a fire control center and / or a building control center is or are connected to the control device via the bus interface. In particular, the bus interface can be designed as a serial bus interface, preferably as a bidirectional serial bus interface. The design of the bus interface as a serial bus interface results in simple installation of the components, since these can be connected to the bus interface or the control device via a simple wire connection with two to four wires.

In one embodiment, that the control device and / or the locking device and / or the freewheel device and / or the door closer may also be provided which have a per se known TCP / IP protocol (T ransmission C ontrol P rotocoll / I nternet P rotocoll), preferably have implemented and communicate via the respective bus interface with a TCP / IP protocol. In particular, the control device and / or the locking device and / or the freewheel device and / or the door closer can be connected to the Internet. In particular, the control device and / or the locking device and / or the freewheel device and / or the door closer can be used via the bus interface in accordance with an IPv4 (Internet Protocol Version 4) and / or IPv6 (Internet Protocol Version 6) standard.

In particular, it is provided that the bus interface of the control device and / or the locking device and / or the freewheel device and / or the door closer have a preferably adjustable IP address. The respective bus interface and thus the respective component, ie. H. the control device and / or the locking device and / or the freewheel device and / or the door closer in the network are clearly identified and thus addressed directly via the Internet. It is provided that the bus interface of the control device and / or the locking device and / or the freewheel device and / or the door closer each have or have an input device in order to manually enter or configure an IP address for the bus interface. Provision can also be made for the IP address to be automatically generated, for example using the DHCP protocol (Dynamic Host Configuration Protocol). The input device can also be designed as a web client to be operated via the bus interface. The bus interface of the control device and / or the locking device and / or the freewheel device and / or the door closer can preferably be designed as a client of a DHCP server.

In one embodiment, it can also be provided that the bus interface of the control device and / or the locking device and / or the freewheel device and / or the door closer is designed as a CANopen interface. That means the control device or at least individual components of the control device can be via a CANopen bus be connected. The CANopen communication protocol is standardized in the EN 50325-4 standard.

By connecting the control device and / or the locking device and / or the freewheel device and / or the door closer to the Internet, a particularly flexible control and or monitoring of the security device can be realized.

In particular, it can be provided that the control device is designed in such a way that it deactivates or switches off the freewheel device when a connected smoke detector and / or fire detector and / or a connected fire alarm control center and / or building control center sends a fire alarm to the control device, so that the door closer opens the Spends door leaf in the closed position. A further increase in the security of the safety device is obtained by providing that the control device is connected to a closed position sensor or has a closed position sensor and is preferably designed such that it is the door leaf in the event of fire after deactivating or switching off the freewheel device by the switchable locking device locks as soon as the door leaf has reached its closed position. This can be timed or done via the closed position sensor.

A safe use of the safety device in escape routes of a building is made possible by providing that the control device is designed such that it controls the locking device for unlocking the door leaf when a connected emergency button or a connected RWS terminal or a connected building control center activates a panic alarm the control device sends, so that the door leaf can be brought into an open position after a panic alarm. The panic alarm can come from an emergency button mounted in the area of the door or from a remote location, for example a building control center.

In particular, it can be provided that the control device is designed such that it switches the freewheel device on or leaves it switched on when a connected emergency button or a connected RWS terminal or a connected building control center sends a panic alarm to the control device, so that the door leaf is not acted upon by the Closer spring can be brought into an open position and / or the switched-on freewheel device holds the door leaf in an open position. This enables the door to be opened more easily, making it easy for walkers or children to walk the escape route in the event of danger. The door closer function is deactivated when the emergency button is pressed via the control device, so that the door can be opened by the door closer without force.

It can be provided that the switched-on freewheel device holds the door leaf in an open position, so that the door or the door leaf remains in the open position after the first opening and the door can easily be walked on by other escaping people without having to open the door leaf or a force of the door closer that counteracts the opening must be overcome. Only when a fire alarm or a fire alarm is reported to the control device is the freewheeling function deactivated, so that the door is then brought back into the closed position. This ensures that even in the event of a panic, the function the door remains as a fire door and the door serves as a smoke barrier.

In one embodiment it is provided that the control device has an optical and / or acoustic alarm transmitter or is connected to one and is designed such that it emits an optical and / or acoustic alarm when a connected emergency button or a connected RWS terminal or a connected building control center sends a panic alarm to the control device. In this way, the opening of the door can be reported, for example to prevent the door from being opened unnoticed in a closed room. The security device can thus also be used to secure escape routes in sensitive buildings, for example warehouses or department stores, since when the door is opened, appropriate operating personnel are alerted to the opening of the door via the alarm.

In one embodiment it can be provided that the control device has an input for connecting an authorization device or an access signal and is designed such that the control device, upon receipt of an access signal or an authorization signal, controls the locking device for unlocking the door leaf and switches the freewheel device on or off and does not generate or send an optical and / or acoustic alarm. It is therefore possible to walk through the door without triggering an alarm, provided that there is access authorization. The authorization device can be designed, for example, as a key switch or as a code keyboard, so that an authorized person can use a key or can walk through the door knowing the correct access code without triggering an alarm.

It can further be provided that the control device has a preferably adjustable timer and is designed such that it triggers the timer when an access signal or an authorization signal is received and, after the timer has expired, controls the locking device for locking the door leaf. This ensures that, after the door has been walked on by an authorized person, the door is automatically brought back into the closed position or locked, and thus the security device reliably secures the door even if the authorized person forgets to manually arm the security device.

Furthermore, it can be provided in one embodiment that the control device has an input for connecting a motion detector that monitors the area where the door is accessed and the control device is designed such that it only switches off the switchable freewheel device when the motion detector does not report any movement. The movement area of the door can be monitored via the motion detector, so that the door closer is prevented from being closed by people who are still in the area where the door is walked. The motion detector can be designed as an infrared detector or as a radar detector and, depending on the setting, can monitor the inspection area or a certain security zone before and after the inspection area of the door.

In one configuration, it can be provided that the emergency button is arranged as an electromechanical emergency button or as one in the RWS terminal Touch-sensitive and / or displaceably mounted display is formed. The electromechanical emergency button can be designed as an emergency button known per se, for example as an emergency button with a red actuating mushroom, which latches after actuation, so that even after an actuation has taken place, the triggering detector can be identified.

In an alternative embodiment, the emergency button can also be designed as a touch-sensitive display, in particular a touchscreen, and trigger an emergency alarm or panic alarm when a sensor area identified as an emergency button is touched and control the control device accordingly. It is provided that the touchscreen or the touch-sensitive display is arranged in a housing of a switch panel or RWS terminal that holds the display and that is arranged in the area where the door is walked on. In order to prevent an accidental alarm triggering, it can further be provided that the control device is designed such that touching the touch-sensitive display or touchscreen first triggers a pre-alarm and the main alarm or panic alarm is only generated after a certain period of time has elapsed. The pre-alarm can be configured as an acoustic and / or visual advisory signal in order to alert an operator to the imminent main alarm.

In a further embodiment, the emergency button can also be designed as a displaceably mounted display which is arranged in a housing of an RWS terminal. The displaceably mounted display can be designed as a touchscreen in order to make switching inputs and / or to send commands to the control device. To trigger an emergency alarm, the display or the display area is pressed by an operator and pushed into the housing of the RWS terminal to trigger an emergency or panic alarm. The displaceably mounted display can switch an electromechanical contact when moved. A position sensor can also be provided, which detects the position of the display and generates a panic or emergency alarm when moved.

In order to enable intrinsically safe operation of the safety device, it can be provided that the switchable freewheel device releases the power transmission of the closer spring to the linkage in the de-energized state and that the locking device unlocks the door leaf in the de-energized state.

In a constructive embodiment it can be provided that the freewheel device has a switchable coupling element which is arranged between the drive shaft and the force-transmitting linkage in order to switchably couple or disengage the drive shaft with the linkage. The switchable coupling element can in particular be designed as an electrically switchable coupling element and comprise, for example, an electromagnet.

In a constructive embodiment, it can also be provided that the freewheel device has a switchable holding element which is designed and / or arranged in such a way that it prevents the closer spring from being discharged in the activated or switched-on state. The switchable holding element can be designed, for example, as an electrically switchable pawl or holding magnet and cooperate with an output of the closer spring in order to hold it and / or to form a stop for it. In particular, it can be provided that the switchable Holding element is designed and / or arranged so that in the activated or switched-on state it enables the closer spring to be charged, preferably enables the door leaf to be opened manually while the closer spring is charged. This makes it possible for the closer spring to be loaded when the door leaf is opened without the closer spring being discharged again after the door leaf has been released. It can advantageously be provided that the freewheel device has a switchable holding element which is designed to be self-holding by preventing the closing spring from discharging in any position in the activated or switched-on state, so that the switchable holding element in the activated or switched-on state prevents the door leaf from being opened manually The closing spring can be charged and the door leaf cannot be closed while the closing spring is being discharged. This virtually enables a stepless opening and holding function of the door leaf, in that the door leaf can be moved manually into a specific opening position while the closer spring is being charged and the holding element automatically holds the closer spring in this position. If the door leaf is then moved back into the closed position, the closer spring remains in the charged position, so that the door leaf can be moved up to this opening angle without the counterforce of the door closer being influenced. If the door leaf is then opened beyond this position, the closer spring is charged further without any control intervention being necessary. Even in the renewed, this time more open position of the door leaf, the holding element automatically holds the closer spring, so that the door can then be walked on without the counterforce of the door closer.

In order to achieve a comfortable opening of the door leaf, a door closer can be used, which has a falling opening moment when opening. It is thereby achieved that even if the opening takes place against the force of the door closer, the door opening takes place comfortably in that an increased force is only to be applied at the beginning of the opening process and the opening force decreases against the opening of the process.

In one embodiment, it can also be provided that the freewheel device has a switchable holding element, which is designed and / or arranged such that, in the activated or switched-on state, it is designed to block the closer spring in a compressed or charged position, and preferably the door leaf in a open position. This enables the door to be locked in a certain opening position and thus enables children or the disabled to walk freely on the door, for example.

In a constructive embodiment it can be provided that the closer spring is arranged inside the drive housing in a hydraulic chamber filled with hydraulic fluid and the holding element is designed as an electrically switchable valve which is arranged in an overflow channel of the door closer and a flow of hydraulic fluid out of the hydraulic chamber and / or prevents or releases into the hydraulic chamber. In particular, it can be provided that the electrically switchable valve prevents the flow of hydraulic fluid in one direction and releases it in the opposite direction and is arranged in an overflow channel in such a way that the electrically switchable valve prevents the closing spring from being discharged in the switched-on or blocked position and allows the closer spring to be charged.

In another design, it can also be provided that the switchable holding element is designed as a braking element acting on the drive shaft, which is arranged such that it releases a rotation of the drive shaft when switched off and blocks a rotation of the drive shaft when switched on. The brake element can be designed, for example, as a friction brake, which activates prevents the drive shaft from rotating. Alternatively, the braking element can also be designed, for example, as a detent or bolt, which engages activated in a recess or toothing of the drive shaft in order to prevent rotation of the drive shaft.

Advantageously, it can be provided that the linkage is connected to the drive shaft via a driver device which, in one direction of rotation, preferably in the opening direction of the door leaf, couples the linkage in a rotationally fixed manner to the drive shaft and in the opposite direction of rotation, preferably in the closing direction of the door leaf, a separation of the non-rotating part Coupling between linkage and drive shaft enables. The driver device forms, so to speak, a free-wheel for the linkage and enables the door leaf to move freely between an open position and the closed position, which is determined by the fixing device, even when the fixing device is fixed.

In particular, it can be provided that the driver device has a driver disk with a stop which is connected to the drive shaft in a manner fixed against relative rotation and rotatable with the linkage, the stop being arranged such that the stopper comes into contact with the linkage or an arm when the door leaf is opened manually Linkage arrives and the drive plate or the drive shaft for loading the closer spring entrains, and that when the door leaf is driven, the drive shaft rotates the drive plate in the closing direction until the stop comes into contact with the linkage or one arm of the linkage and takes it along in the closing direction to bring the door leaf into the closed position.

In one configuration, the control device can be designed in such a way that the door can be permanently released. For example, a permanent release can be switched via the RWS terminal or an authorization switch, in particular a key switch, so that the door can be freely accessed without restrictions during the switching phase of the permanent release. Even during this permanent release, security against fire protection is guaranteed by the control device switching off the freewheel function and activating the door closer function when a fire alarm is triggered.

Alternatively, the permanent release can also be designed as a short-term release via a timer, in that when the release of the door is switched on, the control device activates a timer and, after the timer has expired, automatically brings the door into the closed position and controls the locking device to lock the door leaf.

Fig. 1:

ein schematisches Ausführungsbeispiel der Sicherungsvorrichtung an einer Gebäudetür

Fig. 2:

ein schematisches Schaltbild der Sicherungseinrichtung

Fig. 3:

eine Schnittdarstellung der Fig. 1 im Bereich der Verriegelungsvorrichtung

Fig. 4:

eine Schnittdarstellung eines Ausführungsbeispiels eines Türschließers der Sicherungsvorrichtung

Fig 5:

eine Darstellung eines Türschließers mit einer Schnittdarstellung im Bereich des Magnetventils

Figur 6 a, b, c:

eine Detailvergrößerung aus Figur 5

Further advantageous configurations are shown in the figures and described in the following description of the figures. Show:

Fig. 1:

a schematic embodiment of the security device on a building door

Fig. 2:

a schematic diagram of the fuse device

Fig. 3:

a sectional view of the Fig. 1 in the area of the locking device

Fig. 4:

a sectional view of an embodiment of a door closer of the securing device

Fig 5:

a representation of a door closer with a sectional view in the area of the solenoid valve

Figure 6 a, b, c:

a detailed enlargement Figure 5

In the in the Figures 1 to 6 The illustrated embodiment of the security device 1 according to the invention is an embodiment of the security device according to the invention on a door in a building.

As from the representation of the Figure 1 can be seen, the door 11 has a door leaf 12 which is rotatably mounted in a fixed frame 14 via belts 13 about a vertical axis of rotation A. The door leaf 12 is designed as a swing pivot leaf. A door closer 2, which is designed as a sliding arm door closer, is arranged in the upper region of the door leaf 12. The door closer 2 drives the door leaf 12 in the closing direction. On the wall next to the door 11, an RWS terminal 5 is mounted in the area next to the closing edge, which has a key switch 52 and an emergency button 51 for controlling the safety device.

The door closer 2 is mounted in the upper area of the door leaf 12 by means of a mounting plate 15. In the Fig. 4 the door closer 2 of the safety device 1 is shown in a sectional view. The sliding arm door closer 2 has a drive housing or door closer housing 26, in which a drive shaft 21 is rotatably mounted. A hydraulic chamber 25 filled with hydraulic fluid is arranged in the door closer housing 26, a door closer spring 23 being arranged in the hydraulic chamber 25. The door closer spring 23 interacts with the drive shaft 21 via a piston and a cam gear. The drive shaft 21 is connected to the slide arm 22 via a driver device 7. The free end of the slide arm 22 is guided in a slide rail 24 mounted on the door frame via a slide 28 designed as a roller or slide block. The door closer 2 is designed as a mechanical or hydraulic door closer 2. I.e. the door closer 2 has no electric drive. He moves the door without external energy, that is, only on the basis of the energy stored in the door closer spring 23.

As in the Figures 1 and 3 shown, a resilient, so-called shooting lock latch 41 is mounted together with the door closer 2 on the mounting plate 15. The mounting plate 15 is thus designed as a common mounting plate 15 for the door closer and the lock latch. The lock latch 41 is part of the switchable locking device 4, which in Fig. 3 is shown in a sectional view. The switchable locking device 4 has an escape door opener 42 mounted in the region of the slide rail, ie in the region of the door frame. The escape door opener 42 comprises a latch receiving space, in which the latch 41 engages in the closed position of the door. The latch receiving space of the escape door opener 42 is delimited by a pivotable door opener latch which can be released and / or locked electrically. For switching on or locking the locking device 4, this pivotable door opener latch is locked, so that the door leaf 12 is locked in its closed position via the locking device 4. To switch off or release the locking device, the door opener latch is unlocked so that it can be pivoted about a pivot axis running parallel to the upper edge of the rotary leaf 12, so that the lock latch 41 can be brought out of engagement with the door opener latch when the door leaf 12 is opened.

In the Figure 5 An embodiment of the door closer 2 is shown with a sectional view in the area of the solenoid valve 27.

The door closer 2 has a switchable freewheel device 3 which, as a holding element 31, comprises a switchable solenoid valve 27 which is arranged in the door closer housing 26 in an overflow channel of the hydraulic fluid. By switching on or activating the solenoid valve 27, the locking device is switched on and / or activated and a flow of the hydraulic fluid in the hydraulic channel is prevented in the direction that corresponds to the closing direction of the door closer. The valve 27 is designed in such a way that it only prevents the flow of the hydraulic fluid in one direction and allows it in the opposite direction, that is to say in the opening direction. When the valve 27 is switched on, it is thus achieved that the closer spring 23 cannot discharge, since a flow of the hydraulic fluid into the hydraulic chamber 25 through the valve 27 is prevented. If the door closer is actuated in the opening direction with the valve 27 switched on, further charging or compression of the closer spring is possible since the switched valve 27 enables hydraulic fluid to flow out of the hydraulic chamber 25.

When the valve 27 is switched on, a largely force-free actuation of the door leaf 12 is made possible via the freewheel device 3 by the freewheel device comprising a driver device 7. This has a drive plate 71 with a fixed stop 72. The driver device 7 connects the sliding arm 22 to the drive shaft 21. The driver disk 71 is connected to the drive shaft 21 in a rotationally fixed manner. The slide arm 22 is freely rotatably mounted on the drive plate. If the door closer 2 is actuated by opening the door leaf 12 in the opening direction, the stop 72 comes into contact with the slide arm 22, so that the slide arm 22 takes the driver 72 with rotation of the drive shaft 21 and thereby compresses the closer spring 23. When the door leaf 12 closes under the action of the door closer 2, the closer spring 23 discharges and rotates the drive shaft 21 in the closing direction. The driver 72 again comes into contact with the sliding arm 22 and takes it along in the closing direction, so that the door leaf 12 is brought into its closed position.

When the holding element 31 or the solenoid valve 27 is switched on, the door closer spring 23 is fixed in its charged position, so that it cannot discharge and the output shaft 21 is not driven in the closing direction. By means of the driver device 7 it is nevertheless possible to actuate the door leaf 12 in the closing direction by moving the sliding arm in the closing direction and thereby lifting off the stop 72 and thus being freely rotatable. The door leaf can thus be moved between the determined open position and the closed position without being influenced by the force of the door closer 2. If the door leaf is now opened further than the locking position previously set by the locking device, the sliding arm 22 comes into contact with the stop 72 again and takes it under rotation of the Drive shaft 21 in the opening direction and with compression of the closer spring 23 with. The activated solenoid valve 27 allows the hydraulic fluid to escape from the hydraulic chamber 25 in the opening direction, so that the closing spring can be charged without any problems. If the door is now closed again in the further open position, this is again made possible by the driver device 7 without the door closer exerting any force.

In the Figure 6a the freewheel device 3 is shown in a position in which the door is opened. The piston 29 moves in the in Figure 6a direction indicated by arrow, in this illustration to the left. The Figure 6b shows the freewheel device 3 in a position in which the door is kept open. The piston 29 is fixed. In the Figure 6c the freewheel device 3 is shown in a position in which the door is closed. The piston 29 moves in the in Figure 6a direction indicated by arrow, in this illustration to the right.

A first ball valve 271 is arranged in the region of the piston 29. This valve controls the flow of hydraulic fluid through an overflow channel arranged centrally in the piston. In the Figure 6a the ball valve is open and in the Figures 6b and 6c closed. The solenoid valve 27 has an energizable coil 32 which acts on a plunger 33. The tappet 33 is connected to the second valve 272 and actuates it in order to prevent or release a flow of hydraulic fluid through a flow channel arranged in the region of the door closer housing 26.

In order to switch the locking device, an RWS terminal 5 is provided, which has a key switch 52 and an emergency button 51. As in FIG. 2 shown, a control device 6 is provided in the housing of the RWS terminal 5, which is connected to the emergency button 51 and the key switch 52. The control device 6 has a first input 62a, to which the emergency button 51 is connected, and a second input 62c, to which the key switch 52 is connected. The control device 6 is connected to a building control center 54 via a third input 62b. The building control center 54 is a control center located spatially far from the door 11 and transmits status messages or alarm messages to the control device 6. Furthermore, the control device 6 is connected via a bus interface 61 to the locking device 4 and the free-wheeling device 3 of the door closer 2. The connection is made via a common CAN bus system 63. The control device 6 is also connected via the bus system to an alarm transmitter 55, which is designed as an optical and / or acoustic alarm transmitter.

The control device 6 is designed as an electrical control device and has a microprocessor and an electronic memory. An executable program is stored in the memory and is executed by the microprocessor. The control device 6 is in particular adjustable and / or parameterizable in order to set the addresses and / or the number of components connected to the bus 63 or the bus interface 61. The bus interface 61 is designed as a bidirectional bus interface, so that the control device 6 can use the bus interface 61 to both control components and to receive signals from sensors and / or detectors and / or input devices. The control device 6 is configured to be parameterizable or adjustable and can be adapted universally, for example to include the addresses and / or number of those via the bus interface and / or via separate inputs connected components. The parameterization of the control device can also determine, for example, whether a motion detector is connected to the control device and the control device thus takes into account the signal of the motion detector when the door is closed, in order to ensure that the door only closes when a person detects it through the motion detector Has left the inspection area of the door. Alternatively, the control device can also be parameterized for operation without a motion detector, so that the door leaf closes without delay. Likewise, the control device 6 can be parameterized in order, for example, to set whether the key switch 52 is used for a permanent release or a short-term release of the door. In the case of permanent release, the control device 6 sets the freewheel device if the key switch 52 is actuated. The freewheel device is switched off via the control device 6 only after either a fire alarm or fire alarm is reported or a targeted switch-off takes place via the key switch 52. In the case of a short-term release, as in the case of permanent release, the key switch deactivates the lock and activates the freewheel function by the control device. But switching off the freewheel device and closing and locking the door now takes place automatically by the control device after an adjustable period of time has elapsed.

The control device 6 is designed such that it can be set and / or parameterized via the bus interface 61 and / or via a parameterization device connected to the control device 6 via a parameterization interface. So the setting and / or parameterization of the control device either by the installer on site using a parameterization device or remotely operated from a central point via bus 63.

LIST OF REFERENCE NUMBERS

A

axis of rotation

1

safety device

11

door

12

door

13

bands

14

doorframe

15

mounting plate

2

door closers

21

drive shaft

22

linkage

23

closer spring

24

slide

25

hydraulic chamber

26

Door closer housing

27

Valve

271

first valve

272

second valve

28

skid

29

piston

3

Freewheel device

31

retaining element

32

Kitchen sink

33

tappet

4

locking device

41

Cases

42

escape door

5

RWS terminal

51

emergency button

52

key holder

53

smoke detector

54

Fire alarm headquarters

55

alarm device

6

control device

61

bus interface

62a

first entrance

62b

second entrance

63

CAN bus

7

entraining

71

driver disc

72

attack

Claims (15)

1. Securing device for securing a door (11) in escape and rescue routes, preferably a fire door or smoke-protective door, having at least one door leaf (12) constructed as a stop swivel leaf, which is pivotably mounted using hinges (13) onto a stationary door frame (14),
   having a door actuator constructed as a door closure device (2) with a closing spring (23), said door actuator having an actuator housing (26) and a driveshaft (21) mounted within it, which works together with a force-transmitting linkage (22) arranged between the door leaf (12) and the stationary door frame (14),
   preferably a scissor arm linkage or sliding arm linkage, such that the door actuator biases the door leaf (12) in the direction of its closed position,
   having an RWS terminal (5) arranged in the region of the door with an emergency button (51), and
   having a locking device (4) switchable by the emergency button (51), said locking device electronically switchably locking and/or unlocking the door leaf (12) in its closed position,
   characterised in that
   the door closure device (2) has an electrically switchable freewheel device (3) which switchably prevents and/or releases a force transmission of the closing spring (23) onto the linkage (22) at least in a closing direction and/or an opening direction, and having a control device (6) which is connected to the switchable locking device (4), and the switchable freewheel device (3) and is designed in such a way that it separately switches the locking device (4) and the switchable freewheel device (3).
2. Securing device according to claim 1,
   characterised in that
   the control device (6) has a first input (62a) for connecting the emergency button (51) and/or the RWS terminal (5) and a second input (62b) for connecting a smoke detector and/or fire detector and/or a fire alarm control panel (54) and/or a building control centre.
3. Securing device according to claim 1 or 2,
   characterised in that
   the control device (6) is arranged in the RWS terminal (5), preferably in an installation space enclosed by a housing of the RWS terminal (5), or the control device (6) is arranged within the actuator housing (26) of the door closure device (2) or is mechanically fixedly connected to the actuator housing (26) of the door closure device (2).
4. Securing device according to one of claims 1 to 3,
   characterised in that,
   the control device (6) has a bus interface (61) for a digital bus, preferably CAN bus or LIN bus, and the emergency button (51) and/or the RWS terminal (5) and/or the switchable freewheel device (3) and/or a smoke detector or fire detector and/or a fire alarm control centre (54) and/or a building control centre is or are connected to the control device (6) via the bus interface (61), wherein it is preferably provided that the bus interface (61) is designed as a serial bus interface, preferably as a bidirectional serial bus interface.
5. Securing device according to one of the preceding claims,
   characterised in that,
   the control device (6) is designed in such a way that it deactivates or switches off the freewheel device (3) when a connected smoke detector and/or fire detector and/or a connected fire alarm control centre (54) and/or building control centre sends a fire alarm to the control device (6), such that the door closure device (2) brings the door leaf (12) into the closed position, preferably by the control device (6) being connected to a closed position sensor or having a closed position sensor and being designed in such a way that it locks the door leaf (12) in its closed position by means of the switchable locking device (4).
6. Securing device according to one of the preceding claims,
   characterised in that
   the control device (6) is designed in such a way that it controls the locking device (4) for unlocking the door leaf (12) when a connected emergency button (51) or a connected RWS terminal (5) or a connected building control centre sends a panic alarm to the control device (6), such that the door leaf (12) can be brought into an open position.
7. Securing device according to claim 6,
   characterised in that
   the control device (6) is designed in such a way that it switches on the freewheel device (3) or leaves said freewheel device switched on when a connected emergency button (51) or a connected RWS terminal (5) or a connected building control centre sends a panic alarm to the control device, such that the door leaf (12) can be brought into an open position without biasing by means of the closing spring (23), and/or the switched-on freewheel device (3) holds the door leaf (12) in an open position.
8. Securing device according to claim 6 or 7,
   characterised in that
   the control device (6) has an optical and/or acoustic alarm transmitter (55) or is connected to such a transmitter and is designed in such a way that it emits an optical and/or acoustic alarm when a connected emergency button (51) or a connected RWS terminal (5) or a connected building control centre sends a panic alarm to the control device (6).
9. Securing device according to claim 8,
   characterised in that
   the control device (6) has an input (61) for connecting an authorisation device (52) or an access signal and is designed in such a way that the control device (6), upon receiving an access signal or an authorisation signal, controls the locking device (4) to unlock the door leaf (12) and switches on the freewheel device (3) or leaves said freewheel device switched on and does not generate or emit an optical and/or acoustic alarm, wherein it is preferably provided that the input (61) for connecting an authorisation device (52) or an access signal is designed as a bus interface for connecting a serial bus system, in particular CAN bus (63) or as a discrete input.
10. Securing device according to one of the preceding claims,
    characterised in that
    the control device (6) has an input for connecting a motion sensor which monitors the walk-in area of the door leaf (12), and the control device (6) is designed in such a way that it switches off the switchable freewheel device (3) only then when the motion sensor does not detect any movement.
11. Securing device according to one of the preceding claims,
    characterised in that
    the switchable freewheel device (3) in a currentless state releases the force transmission of the closing spring (23) onto the linkage (22),
    and the locking device (4) in a currentless state unlocks the door leaf (12), and/or the freewheel device (3) has a switchable coupling element which is arranged between the driveshaft (21) and the force-transmitting linkage (22) in order to switchably engage or disengage the driveshaft (21) in a rotationally fixed manner with the linkage (22).
12. Securing device according to one of the preceding claims,
    characterised in that
    the freewheel device (3) has a switchable holding element (27) which is designed and/or arranged in such a way that, in an activated or switched-on state, it prevents a discharging of the closing spring (23), preferably,
    the switchable holding element (27) is designed and/or arranged in such a way that, in the activated or switched-on state, it enables a charging of the closing spring (23), preferably enables a manual opening of the door leaf (12) by charging the closing spring (23), in particular, it is provided that
    the freewheel device (3) has a switchable holding element (27) which is designed self-retainingly by it preventing, in an activated or switched-on state, a discharging of the closing spring (23) in any position, such that the switchable holding element (27) in an activated or switched-on state enables a manual opening of the door leaf (12) by charging the closing spring (23) and prevents a closing of the door panel (12) by discharging the closing spring (23).
13. Securing device according to one of the preceding claims,
    characterised in that
    the freewheel device (3) has a switchable holding element (27) which is designed and/or arranged in such a way that, in an activated or switched-on state, it is designed to block the closing spring (23) in a compressed or charged position and preferably fixes the door panel (12) in an open position.
14. Securing device according to one of the preceding claims,
    characterised in that
    the closing spring (23) is arranged inside the actuator housing (26) in an hydraulic chamber (25) filled with hydraulic fluid, and the holding element (27) is designed as an electrically switchable valve, which is arranged in an overflow channel of the door closure device (2) and prevents or releases a flow of hydraulic fluid out of the hydraulic chamber (25) and/or into the hydraulic chamber (25), wherein it is preferably provided that
    the electrically switchable valve (27) in the blocked position prevents a flow of hydraulic fluid only in one direction and releases said flow in the opposite direction, and is arranged in an overflow channel in such a way that the electrically switchable valve (27) in a switched-on or blocked position prevents a discharging of the closing spring (23) and enables a charging of the closing spring (23).
15. Securing device according to one of the preceding claims,
    characterised in that
    the switchable holding element is designed as a braking element which acts on the driveshaft (21), said braking element being arranged in such a way that, when switched off, it releases a rotation of the driveshaft (21) and, when switched on, blocks a rotation of driveshaft (21), wherein it is preferably provided that the linkage (22) is connected to the driveshaft (21) by a catch device (7), which, in one direction of rotation, preferably in the opening direction of the door leaf (12), couples the linkage (22) in a rotationally fixed manner with the driveshaft (21) and, in the opposite direction of rotation, preferably in the closing direction of the door leaf (12), facilitates a separation of the rotationally fixed coupling between linkage (22) and driveshaft (21), in particular,
    the catch device (7) has a catch disc (71) that is connected to the driveshaft (21) in a rotationally fixed manner and is rotatably connected to the linkage (22) and has a stop (72), wherein the stop (72) is arranged in such a way that, when the door leaf (12) is manually opened, the stop (72) comes into contact with the linkage (22) or an arm of the linkage and catches the catch disc (71) or the driveshaft (21) for charging the closing spring (23), and,
    in the case of an actuated closing of the door leaf (12), the driveshaft (21) rotates the catch disc (71) in the closing direction until the stop (72) comes into contact with the linkage (22) or an arm of the linkage and catches said linkage in the closing direction in order to bring the door leaf (12) into a closed position.

Images