EP3064684B1 - Locking assembly and door actuator with locking assembly - Google Patents

Locking assembly and door actuator with locking assembly Download PDF

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Publication number
EP3064684B1
EP3064684B1 EP15203025.0A EP15203025A EP3064684B1 EP 3064684 B1 EP3064684 B1 EP 3064684B1 EP 15203025 A EP15203025 A EP 15203025A EP 3064684 B1 EP3064684 B1 EP 3064684B1
Authority
EP
European Patent Office
Prior art keywords
door
hold
open arrangement
temperature
intumescent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15203025.0A
Other languages
German (de)
French (fr)
Other versions
EP3064684A1 (en
Inventor
Alexander Hellwig
Michael Thiele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dormakaba Deutschland GmbH
Original Assignee
Dormakaba Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dormakaba Deutschland GmbH filed Critical Dormakaba Deutschland GmbH
Publication of EP3064684A1 publication Critical patent/EP3064684A1/en
Application granted granted Critical
Publication of EP3064684B1 publication Critical patent/EP3064684B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/002—Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means
    • E05F1/006—Closers or openers for wings, not otherwise provided for in this subclass controlled by automatically acting means by emergency conditions, e.g. fire
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F3/221—Mechanical power-locks, e.g. for holding the wing open or for free-moving zones
    • E05F3/222—Mechanical power-locks, e.g. for holding the wing open or for free-moving zones electrically operated
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/065—Physical fire-barriers having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/22—Additional arrangements for closers, e.g. for holding the wing in opened or other position
    • E05F2003/228—Arrangements where the end of the closer arm is sliding in a track
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/218—Holders
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
    • E05Y2400/61—Power supply
    • E05Y2400/612—Batteries
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/34—Form stability
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/40—Physical or chemical protection
    • E05Y2800/414—Physical or chemical protection against high or low temperatures
    • E05Y2800/416—Physical or chemical protection against high or low temperatures against fire
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/67—Materials; Strength alteration thereof

Definitions

  • the invention relates to a locking arrangement for a door.
  • the invention further relates to a door actuator for a door.
  • the invention relates to a door actuator which is equipped with a locking arrangement according to the invention.
  • Locking arrangements are usually used to hold a door system in a predefined position in order to release the door system at a predetermined unlocking time. If the door system is released, it can be moved by an operating device of the door operator.
  • Door actuators with locking arrangements are known from the prior art. Fire protection doors are often provided with locking devices to keep such doors open during normal use. If signs of a fire are detected, the door is released by the locking arrangement and an actuating device, in particular a door closer, of the door operator closes the door. Alternatively, the door operator can also open the door from a closed state to provide an escape route.
  • the term door also includes door leaves and gates and gate leaves.
  • the US4506407 discloses a locking arrangement according to the preamble of claim 1.
  • the invention is therefore based on the object of providing a locking arrangement for a door actuator, in particular with a heat-sensitive part, which, with simple and inexpensive manufacture and assembly, enables low-maintenance and safe operation, in particular even at high temperatures.
  • the object is achieved by the features of claim 1.
  • the object is thus achieved by a locking arrangement which comprises an intumescent material.
  • the locking arrangement is particularly suitable for use in a door actuator for a door.
  • the intumescent material has a volume that is greater than below the intumescent temperature.
  • a volume increase in the intumescent material is particularly irreversible. If the door has a fire protection function, the door heats up due to the fire. By heating the door, the intumescent material is heated, so that the volume increases when the intumescent temperature is exceeded. Due to the increase in volume and a decrease in density of the intumescent material, the insulating effect within the locking arrangement increases.
  • the locking arrangement can be protected by the intumescent material in the event of a fire be well protected against a rise in temperature, while in normal operation below the intumescent temperature the locking arrangement does not have a high volume which is caused by an insulating layer.
  • the locking arrangement can be connected to a door via at least one fastening element. A back of the locking arrangement points towards the door.
  • the locking arrangement has an element to be protected from a temperature above a limit temperature.
  • This is an electrochemical energy store.
  • this can be electronics and / or sensors.
  • the intumescent material is arranged behind the element to be protected. The intumescent material is thus in the assembled state of the locking arrangement between the element to be protected and the door.
  • the element to be protected is pushed away from the door when the volume of the intument material increases. This increases the distance between the element to be protected and the door via which the locking arrangement is heated.
  • the intumescent material also forms an insulating layer between the element and the door. This effectively slows down heating of the element.
  • the distance from the door means that the person to be protected
  • Element reaches the limit temperature later. This can in particular for a predetermined time, for. B. 30 minutes, a functioning of the element and / or destruction of the element can be prevented. In particular, it is conceivable that an escape of dangerous liquids or an explosion is prevented for the specified time.
  • the specified time is in particular longer than the time required to destroy the fire door by the fire. The spacing can save time because a failure or the destruction of the electrochemical energy store should not become a danger before the fire door is destroyed by the fire.
  • the intumescent material forms at least partially the back of the locking arrangement and / or with a material with a thermal conductivity at 25 ° C. of at least 5 W / mK, preferably at least 40 W / mK, particularly preferably at least 100 W / mK the back is connected.
  • An upper limit is given by the maximum thermal conductivity of known substances. In particular, there can be an upper limit at 400 W / mK (25 ° C), preferably at 1000 W / mK (25 ° C). This ensures that the intumescent material heats up and expands in a timely manner in front of the protective element.
  • the intumescent material When an intumescent temperature is exceeded, the intumescent material preferably has a volume which corresponds to at least 5 times the volume of the intumescent material below the intumescent temperature. In particular, the volume of the intumescent material below the intumescent temperature corresponds to 8.5 times the volume above the intumescent temperature. The volume of the intumescent material below the intumescent temperature particularly preferably corresponds to 12 times the volume above the intumescent temperature.
  • the intumescent temperature is preferably at least 100 ° C.
  • the intumescent temperature is the temperature at which the volume increase begins. The volume increase can be temperature-dependent.
  • a maximum operating temperature of the electrochemical energy store can be specified.
  • the maximum operating temperature of the electrochemical energy store indicates up to which temperature the electrochemical energy store can be used functionally.
  • the maximum operating temperature of the electrochemical energy store is below the limit temperature of the electrochemical energy store.
  • the maximum operating temperature can e.g. B. 80 ° C.
  • the intumescence temperature is preferably above a room temperature that is normal in the normal state and / or can be achieved without fire.
  • the intumescence temperature is particularly preferably above a maximum operating temperature of the electrochemical energy store.
  • the intumescent temperature can be above 70 ° C, preferably above 80 ° C, particularly preferably above 95 ° C.
  • an upper limit for the intumescent temperature can be given by the limit temperature. So an upper limit for the intumescence temperature can be the limit temperature of the to be protected Elements correspond or are above the limit temperature. The latter is conceivable due to temperature differences within the locking arrangement according to the invention.
  • intumescent material may have a higher temperature than the element to be protected. As a result, the intumescent material can experience an increase in volume before the element to be protected has reached the limit temperature.
  • an upper limit for the intumescence temperature can be in a range of up to 30 ° C., preferably up to 20 ° C., particularly preferably up to 10 ° C. above the limit temperature.
  • an upper limit for the intumescent temperature can be below the limit temperature.
  • the intumescence temperature can be in a range of up to 30 ° C., preferably up to 20 ° C., particularly preferably up to 10 ° C. below the limit temperature.
  • the intumescent temperature is in particular a temperature which is in the range of the limit temperature, e.g. B. the limit temperature ⁇ 30 ° C, preferably the limit temperature ⁇ 20 ° C, particularly preferably the limit temperature ⁇ 10 ° C. In this way, an increase in volume that is too early or too late can be avoided.
  • the locking arrangement comprises a mounting element.
  • the mounting element can at least partially cover a rear side of a housing of the locking arrangement. It can be provided that a first surface of the mounting element is designed to be mounted Condition of the door to be facing.
  • the intumescent material can be attached to the first surface.
  • the locking arrangement comprises a slide rail and a locking device.
  • a sliding element can be slidably arranged in the sliding rail, the sliding element being optionally lockable or releasable with the locking device.
  • the sliding element can also preferably be connected to a transmission device, the transmission device converting a movement of a movable part of the door into a movement of the sliding element within the slide rail. The movable part of the door can thus advantageously be locked by the locking device locking the sliding element.
  • the electrochemical energy store is in particular a battery or an accumulator and is preferably used to supply the locking device with electrical energy.
  • the electrochemical energy store is preferably attached to the slide rail and / or in front of the slide rail.
  • the invention protects the electrochemical energy store against the effects of high temperatures.
  • a first air gap is advantageously present between the mounting element and the slide rail, so that there is insulation between the mounting element and the slide rail. Since the electrochemical energy store is preferably attached to and / or in front of the slide rail, there is also insulation between the element to be protected and the mounting element.
  • the intumescent effect of the intumescent Material a second air gap between the mounting element and door can be formed so that further insulation is achieved. As a result, the element to be protected advantageously does not reach a maximum operating temperature even in the event of a fire.
  • the element to be protected is arranged such that it is at the greatest possible distance from the mounting element. It is particularly preferably provided that the slide rail and / or the locking device are arranged between the electrochemical energy store and the mounting element.
  • the electrochemical energy store is particularly preferably arranged centrally between two of the fastening elements. Since the fastening elements represent a thermal bridge of the locking arrangement to the door, the described greatest possible distance between the fastening elements and the electrochemical energy store prevents heat from being transmitted in a short way. By extending the path over which the heat is to be transferred in order to reach the element to be protected, the heat is advantageously distributed over the entire locking arrangement.
  • the locking arrangement preferably has at least one predetermined breaking element. It is provided that the fastening elements are connected to the mounting element via the at least one predetermined breaking element. Each fastening element is particularly preferably connected to the mounting element via its own predetermined breaking element. It is particularly provided that the predetermined breaking elements create an air gap between the mounting element and the other components of the Locking arrangement remains.
  • the predetermined breaking element is designed such that it can be plastically deformed when a melting temperature is exceeded due to a change in volume of the intumescent material.
  • the predetermined breaking element advantageously compensates for the movement of the mounting element that occurs due to the expansion of the intumescent material.
  • the melting temperature corresponds at most to the intumescent temperature.
  • the melting temperature is preferably above a room temperature which is customary in the normal state and / or can be achieved without fire.
  • the melting temperature is particularly preferably above a maximum operating temperature of the electrochemical energy store. It is particularly preferably additionally provided that a threaded element is injected into the predetermined breaking element, the slide rail and / or the locking device and / or the electrochemical energy store being connectable to the threaded element.
  • the predetermined breaking element is particularly preferably arranged on a second surface of the mounting element, which lies opposite the first surface. It is advantageously provided that the fastening elements plastically deform the predetermined breaking element by changing the volume of the intumescent material. In particular, it is provided that the fastening elements penetrate into the predetermined breaking element until the fastening elements rest on the second surface of the mounting element. Due to the fact that it bears against the second surface, displacement of the mounting element is limited by the change in volume of the intumescent material, so that the mounting element and thus the locking arrangement are prevented from falling down.
  • the locking arrangement preferably also has the housing, the housing being provided with a multiplicity of slots.
  • the slots are arranged in such a way that heat that propagates along the housing has to travel as long as possible until the electrochemical energy store is reached.
  • the slots are thus arranged in particular in the form of a labyrinth.
  • the invention relates to a door actuator for a door.
  • the door actuator comprises the locking arrangement described above.
  • the door operator comprises an actuating device for the door, which is in particular a door closing device.
  • the actuating device is operatively connected to the arresting arrangement, in particular to the sliding element of the arresting arrangement, so that actuation of the door results in movement of the sliding element within the arresting arrangement.
  • the door actuator is preferably designed such that the mounting element of the locking arrangement can be attached to a frame of the door and the actuating device can be attached to a door leaf of the door.
  • the door actuator is preferably designed such that the mounting element can be attached to the door leaf of the door and the actuating device can be attached to the frame of the door.
  • the Fig. 1 shows schematically a door operator 2 according to an embodiment of the invention.
  • the door operator 2 is arranged on a door, the door comprising a door leaf 11 and a frame 12.
  • the door actuator 2 has a locking arrangement 1 according to the invention and an actuating device 16, the locking arrangement 1 being fastened to the frame 12 and the actuating device 16 to the door leaf in the exemplary embodiment shown.
  • the door 11, 12 is in particular a fire door. If a fire occurs, a temperature of over 350 ° C, in particular over 380 ° C, arises on the side of the fire protection door opposite the fire.
  • the door actuator 2 is arranged on a side of the door 11, 12 opposite the fire. In order to prevent damage to the door actuator 2, it must be protected from high temperatures.
  • an electrochemical energy store 10 (cf. Fig. 2 ) of the door operator 2 must not be exposed to such high temperatures. Otherwise there is a risk that the electrochemical energy store 10 explodes, causing the fire to spread. This would mean that the fire door would no longer function.
  • the locking arrangement 1 comprises a slide rail 8, in which a slide element, not shown, is slidably arranged.
  • the sliding element is in particular connected to the door actuator 16, so that a movement of the door leaf 11 is converted into a movement of the sliding element.
  • the sliding element can be locked or released via a locking device 9, so that the door leaf 11 can also be locked or released.
  • the door leaf 11 can advantageously be locked in an open position, the door leaf 11 being released in the event of a fire in particular.
  • the door operator 16 transfers the door leaf 11 into the closed position after the release.
  • a fire protection door can thus be realized by means of the locking arrangement 1.
  • the locking device 9 is supplied with electrical energy by the electrochemical energy store 10.
  • the electrochemical energy store 10 is preferably an accumulator or a battery, so that it must be protected against high temperatures, as can occur in particular in the event of a fire.
  • the electrochemical energy store 10 is mounted in front of the slide rail 8.
  • the electrochemical energy store 10 thus has the greatest possible distance from the frame 12. Since the frame 12 is closest to the source of the fire, it can be assumed that the frame 12 next to the door leaf 11 represent the hottest places. The greatest possible distance between the electrochemical energy store 10 and the frame already makes it difficult to transfer heat.
  • the slide rail 8 is connected to the frame 12 via a mounting element 3.
  • the connection of mounting element 3 and frame 12 is realized via a large number of fastening elements 5.
  • the fastening elements 5 are preferably screws or bolts.
  • An intumescent material 4 is attached to a first surface 6 of the mounting element 3.
  • the intumescent material 4 is located between the mounting element 3 and the frame 12. The function of the intumescent material 4 is described in the Figure 3 explained in more detail.
  • a first air gap 100 is present between the mounting element 3 and the slide rail 8.
  • the first air gap 100 serves as insulation for the slide rail 8 and thus also for the electrochemical energy store 10 with respect to the frame 12.
  • predetermined breaking elements 13 are provided which serve as spacers.
  • the predetermined breaking elements 13 are therefore arranged on a second surface of the mounting element 3 opposite the first surface 6.
  • the fastening elements 5 run through a bore in the predetermined breaking elements 13, heads of the fastening elements 5 abutting the predetermined breaking elements 13.
  • the mounting element 3 is connected to the frame by the fastening elements 5 via the predetermined breaking elements 13.
  • the slide rail 8 is connected to the mounting element 3 via the predetermined breaking elements 13. This is achieved, for example, in that the slide rail 8 is screwed to the predetermined breaking elements 13.
  • the predetermined breaking elements 13 also form a thermal bridge 400, via the heat from the mounting element 3 and thus from the frame 12 to the slide rail 8 and thus to the electrochemical one Energy storage 10 is transferable.
  • the transferable heat is limited, as in Figure 3 is shown.
  • FIG 3 shows the case of a large heat exposure 500 on the locking arrangement 1 Figure 2 .
  • Exposure to heat 500 corresponds to thermal energy which is generated by temperatures of the frame 12 from 100 ° C. to 380 ° C.
  • An intumescent temperature of the intumescent material 4 is at least 100 ° C.
  • the heat influence 500 exceeds the intumescent temperature, as a result of which the intumescent material 4 increases its volume.
  • intumescent material 4 is foamed, its volume preferably increasing by a factor of 12.
  • An increase in the volume of the intumescent material 4 is possible in that the predetermined breaking elements 13 give way to the expansion of the intumescent material 4. This is described below.
  • the heat resulting from the action of heat 500 is also conducted through the thermal bridge 400 to the slide rail 8.
  • the predetermined breaking elements 13 thus also heat up.
  • the predetermined breaking elements 13 are designed such that they lose their strength when the intumescent temperature is exceeded and become plastically deformable. The expansion of the intumescent material 4 thus results in a deformation of the predetermined breaking elements, since the heads of the fastening elements 5 penetrate the predetermined breaking element.
  • the mounting element 3 lifts off the frame 12, so that a second air gap 200 is established between the mounting element 3 and the frame 12.
  • the second air gap 200 thus forms further insulation.
  • Lifting is limited by the heads of the fastening elements 5 resting on the second surface of the mounting element 3, ie the heads of the fastening elements 5 have completely penetrated the predetermined breaking point 13.
  • the effectiveness of the thermal bridge 400 is thus also significantly reduced. Falling down of the locking arrangement 1 is prevented by the fastening elements 5 lying directly against the mounting element 3.
  • the first air gap 100 and the second air gap 200 provide a great insulation effect.
  • the electrochemical energy store 10 is therefore effectively protected from the action of heat 500 and always remains within its permissible operating temperatures. In particular, a temperature of the electrochemical energy store 10 remains below 100 ° C.
  • Figure 4 shows further advantageous measures that protect the electrochemical energy store 10. It is initially advantageous to provide the electrochemical energy store 10 centrally between two fastening elements 5. Therefore, the electrochemical energy store 10 from the in Figure 4 position shown, in particular along the centering direction 500, until the electrochemical energy store 10 is arranged centrally between the fastening elements 5.
  • FIG 4 schematically shown slots 14, which are provided in particular in a housing of the locking arrangement 1.
  • the slots 14 have a labyrinth arrangement, so that a heat flow 15 from the frame 12 to the electrochemical energy store 10 has to travel a greater distance over the housing than if the slots 14 were not present in the housing. All of these measures protect the electrochemical energy store 10 from heating up in the event of a fire in such a way that it always remains within the permissible operating temperatures.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Battery Mounting, Suspending (AREA)
  • Special Wing (AREA)

Description

Die Erfindung betrifft eine Feststellanordnung für eine Tür. Weiterhin betrifft die Erfindung einen Türbetätiger für eine Tür. Insbesondere betrifft die Erfindung einen Türbetätiger, der mit einer erfindungsgemäßen Feststellanordnung ausgestattet ist. Feststellanordnungen werden üblicherweise dazu verwendet eine Türanlage in einer vordefinierten Stellung zu halten, um die Türanlage zu einem vorbestimmten Entriegelungszeitpunkt freizugeben. Ist die Türanlage freigegeben, so kann diese von einer Betätigungsvorrichtung des Türbetätigers bewegt werden.The invention relates to a locking arrangement for a door. The invention further relates to a door actuator for a door. In particular, the invention relates to a door actuator which is equipped with a locking arrangement according to the invention. Locking arrangements are usually used to hold a door system in a predefined position in order to release the door system at a predetermined unlocking time. If the door system is released, it can be moved by an operating device of the door operator.

Aus dem Stand der Technik sind Türbetätiger mit Feststellanordnungen bekannt. So werden oftmals Brandschutztüren mit Feststellanordnungen versehen, um derartige Türen im normalen Gebrauch offen zu halten. Sollten Anzeichen für einen Brand detektiert werden, so wird die Tür von der Feststellanordnung freigegeben und eine Betätigungsvorrichtung, insbesondere ein Türschließer, des Türbetätigers schließt die Tür. Alternativ kann der Türbetätiger die Tür auch aus einem geschlossenen Zustand öffnen, um einen Fluchtweg bereitzustellen. Unter dem Ausdruck Tür sind im Sinne der Erfindung ebenfalls Türflügel sowie Tore und Torflügel zu subsumieren.Door actuators with locking arrangements are known from the prior art. Fire protection doors are often provided with locking devices to keep such doors open during normal use. If signs of a fire are detected, the door is released by the locking arrangement and an actuating device, in particular a door closer, of the door operator closes the door. Alternatively, the door operator can also open the door from a closed state to provide an escape route. For the purposes of the invention, the term door also includes door leaves and gates and gate leaves.

Es sind außerdem Anwendungsfälle bekannt, bei denen elektrochemische Energiespeicher in den Türbetätigern, insbesondere in den Feststellanordnungen, vorhanden sind. So kann der Türbetätiger insbesondere durch einen Akkumulator oder eine Batterie betrieben werden. Sind derartige Türbetätiger bei Brandschutztüren vorgesehen, so besteht die Gefahr, dass der Akkumulator oder die Batterie durch die bei einem Brand entstehende Hitze seine zulässigen Betriebsgrenzen verlässt und aufgrund zu hoher Temperatur explodiert. Dies kann schlimmstenfalls den Brand weiter verstärken. Ebenfalls ist es denkbar, dass andere hitzeempfindliche Teile, wie eine Elektronik oder Sensorik, vor einer zu großen Wärmeentwicklung geschützt werden müssen.Applications are also known in which electrochemical energy stores are present in the door actuators, in particular in the locking arrangements. So the door operator can be operated in particular by an accumulator or a battery. If such door actuators are provided in fire protection doors, there is a risk that the accumulator or the battery will leave its permissible operating limits due to the heat arising in the event of a fire and explode due to excessive temperature. In the worst case, this can further intensify the fire. It is also conceivable that other heat-sensitive parts, such as electronics or sensors, must be protected against excessive heat generation.

Die US4506407 offenbart eine Feststellanordnung nach dem Oberbegriff des Anspruchs 1.The US4506407 discloses a locking arrangement according to the preamble of claim 1.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Feststellanordnung für einen Türbetätiger, insbesondere mit einem hitzeempfindlichen Teil, bereitzustellen, die bei einfacher und kostengünstiger Herstellung und Montage einen wartungsarmen und sicheren Betrieb, insbesondere auch bei hohen Temperaturen, ermöglicht.The invention is therefore based on the object of providing a locking arrangement for a door actuator, in particular with a heat-sensitive part, which, with simple and inexpensive manufacture and assembly, enables low-maintenance and safe operation, in particular even at high temperatures.

Die Aufgabe wird gelöst durch die Merkmale des Anspruchs 1. Somit wird die Aufgabe gelöst durch eine Feststellanordnung, die ein intumeszentes Material umfasst. Die Feststellanordnung ist insbesondere zur Verwendung in einem Türbetätiger für eine Tür geeignet. Das intumeszente Material weist bei Überschreiten einer Intumeszenztemperatur ein Volumen auf, das größer ist als unterhalb der Intumeszenztemperatur. Dabei ist eine Volumenzunahme des intumeszenten Materials insbesondere irreversibel. Sollte die Tür eine Brandschutzfunktion wahrnehmen, so heizt sich die Tür aufgrund des Brandes auf. Durch das Aufheizen der Tür wird das intumeszente Material aufgeheizt, so dass dieses bei Überschreiten der Intumeszenztemperatur eine Volumenzunahme erfährt. Durch die Volumenzunahme und eine Dichteabnahme des intumeszenten Materials steigt die isolierende Wirkung innerhalb der Feststellanordnung. Somit können zumindest Teile der Feststellanordnung durch das intumeszente Material im Brandfall vor einem Temperaturanstieg gut geschützt sein, während in einem Normalbetrieb unterhalb der Intumeszenztemperatur die Feststellanordnung kein hohes Volumen, das durch eine Isolierschicht verursacht ist, aufweist.The object is achieved by the features of claim 1. The object is thus achieved by a locking arrangement which comprises an intumescent material. The locking arrangement is particularly suitable for use in a door actuator for a door. When an intumescent temperature is exceeded, the intumescent material has a volume that is greater than below the intumescent temperature. A volume increase in the intumescent material is particularly irreversible. If the door has a fire protection function, the door heats up due to the fire. By heating the door, the intumescent material is heated, so that the volume increases when the intumescent temperature is exceeded. Due to the increase in volume and a decrease in density of the intumescent material, the insulating effect within the locking arrangement increases. In this way, at least parts of the locking arrangement can be protected by the intumescent material in the event of a fire be well protected against a rise in temperature, while in normal operation below the intumescent temperature the locking arrangement does not have a high volume which is caused by an insulating layer.

Die Unteransprüche haben bevorzugte Weiterbildungen der Erfindung zum Inhalt.The dependent claims contain preferred developments of the invention.

Im Folgenden werden Ortsangaben wie "vor", "hinter", "neben", "oben", "unten" "Vorder", "Front", "Rück" so verwendet, wie ein entfernt stehender Betrachter die an der Tür montierte Feststellanordnung wahrnimmt.In the following, location information such as "in front", "behind", "next to", "above", "below" "front", "front", "rear" is used in the same way as a distant viewer perceives the locking arrangement mounted on the door ,

Die Feststellanordnung ist über zumindest ein Befestigungselement mit einer Tür verbindbar. Dabei weist eine Rückseite der Feststellanordnung zu der Tür hin.The locking arrangement can be connected to a door via at least one fastening element. A back of the locking arrangement points towards the door.

Die Feststellanordnung weist ein vor einer Temperatur über einer Grenztemperatur zu schützendes Element auf. Dieses ist ein elektrochemischer Energiespeicher. Zusätzlich kann dieses eine Elektronik und/oder eine Sensorik sein. Hierbei ist das intumeszente Material hinter dem zu schützenden Element angeordnet. Somit befindet sich das intumeszente Material im montierten Zustand der Feststellanordnung zwischen dem zu schützenden Element und der Tür. Auf diese Weise wird das zu schützende Element erfindungsgemäß bei einer Volumenvergrößerung des intumenzenten Materials von der Tür weggedrückt. Somit vergrößert sich der Abstand zwischen dem zu schützenden Element und der Tür, über die die Feststellanordnung aufgeheizt wird. Hierbei bildet das intumeszente Material zudem eine Isolierschicht zwischen dem Element und der Tür. Hierdurch wird eine Erwärmung des Elements wirksam verlangsamt. Durch die Beabstandung von der Tür wird bei dem zu schützendenThe locking arrangement has an element to be protected from a temperature above a limit temperature. This is an electrochemical energy store. In addition, this can be electronics and / or sensors. The intumescent material is arranged behind the element to be protected. The intumescent material is thus in the assembled state of the locking arrangement between the element to be protected and the door. In this way, according to the invention, the element to be protected is pushed away from the door when the volume of the intument material increases. This increases the distance between the element to be protected and the door via which the locking arrangement is heated. The intumescent material also forms an insulating layer between the element and the door. This effectively slows down heating of the element. The distance from the door means that the person to be protected

Element die Grenztemperatur später erreicht. Hierdurch kann insbesondere eine vorgegebene Zeit lang, z. B. 30 Minuten, ein Funktionieren des Elements erreicht und/oder eine Zerstörung des Elements verhindert werden. Insbesondere ist es denkbar, dass ein Austritt gefährlicher Flüssigkeiten oder eine Explosion die vorgegebene Zeit lang verhindert wird. Die vorgegebene Zeit ist insbesondere länger als die Zeit, die benötigt wird, um die Brandschutztür durch das Feuer zu zerstören. Durch die Beabstandung kann Zeit gewonnen werden, denn ein Ausfall oder die Zerstörung des elektrochemischen Energiespeichers soll nicht zur Gefahr werden, bevor die Brandschutztür durch das Feuer zerstört ist.Element reaches the limit temperature later. This can in particular for a predetermined time, for. B. 30 minutes, a functioning of the element and / or destruction of the element can be prevented. In particular, it is conceivable that an escape of dangerous liquids or an explosion is prevented for the specified time. The specified time is in particular longer than the time required to destroy the fire door by the fire. The spacing can save time because a failure or the destruction of the electrochemical energy store should not become a danger before the fire door is destroyed by the fire.

Es ist denkbar, dass das intumeszente Material zumindest teilweise die Rückseite der Feststellanordnung bildet und/oder über ein Material mit einer Wärmeleitfähigkeit bei 25 °C von zumindest 5 W/mK, bevorzugt zumindest 40 W/mK, besonders bevorzugt zumindest 100 W/mK mit der Rückseite verbunden ist. Eine obere Grenze ist durch die maximale Wärmeleitfähigkeit bekannter Stoffe gegeben sein. Insbesondere kann eine obere Grenze bei 400 W/mK (25°C), bevorzugt bei 1000 W/mK (25°C) gegeben sein. Hierdurch wird erreicht, dass sich das intumeszente Material bei einem Brand besonders rechtzeitig und vor dem schützenden Element erwärmt und ausdehnt.It is conceivable that the intumescent material forms at least partially the back of the locking arrangement and / or with a material with a thermal conductivity at 25 ° C. of at least 5 W / mK, preferably at least 40 W / mK, particularly preferably at least 100 W / mK the back is connected. An upper limit is given by the maximum thermal conductivity of known substances. In particular, there can be an upper limit at 400 W / mK (25 ° C), preferably at 1000 W / mK (25 ° C). This ensures that the intumescent material heats up and expands in a timely manner in front of the protective element.

Bevorzugt weist das intumeszente Material bei Überschreiten einer Intumeszenztemperatur ein Volumen auf, das zumindest dem 5-fachen Volumen des intumeszenten Materials unterhalb der Intumeszenztemperatur entspricht. Insbesondere entspricht das Volumen des intumeszenten Materials unterhalb der Intumeszenztemperatur dem 8,5-fachen des Volumens oberhalb der Intumeszenztemperatur. Besonders bevorzugt entspricht das Volumen des intumeszenten Materials unterhalb der Intumeszenztemperatur dem 12-fachen des Volumens oberhalb der Intumeszenztemperatur. Die Intumeszenztemperatur beträgt bevorzugt zumindest 100°C. Die Intumszenztemperatur ist hierbei die Temperatur, bei der die Volumenvergrößerung beginnt. Die Volumenvergrößerung kann temperaturabhängig sein.When an intumescent temperature is exceeded, the intumescent material preferably has a volume which corresponds to at least 5 times the volume of the intumescent material below the intumescent temperature. In particular, the volume of the intumescent material below the intumescent temperature corresponds to 8.5 times the volume above the intumescent temperature. The volume of the intumescent material below the intumescent temperature particularly preferably corresponds to 12 times the volume above the intumescent temperature. The intumescent temperature is preferably at least 100 ° C. The intumescent temperature is the temperature at which the volume increase begins. The volume increase can be temperature-dependent.

Neben der Grenztemperatur kann eine maximale Betriebstemperatur des elektrochemischen Energiespeichers vorgegeben sein. Die maximale Betriebstemperatur des elektrochemischen Energiespeichers gibt an, bis zu welcher Temperatur der elektrochemische Energiespeicher funktional verwendet werden kann. Die maximale Betriebstemperatur des elektrochemischen Energiespeichers liegt unter der Grenztemperatur des elektrochemischen Energiespeichers. Die maximale Betriebstemperatur kann z. B. 80°C betragen. Üblicherweise werden sowo hl die maximale Betriebstemperatur als auch die Grenztemperatur, z. B. 100 °C, von dem Hersteller des elektrochemischen Energiespeichers vorgegeben.In addition to the limit temperature, a maximum operating temperature of the electrochemical energy store can be specified. The maximum operating temperature of the electrochemical energy store indicates up to which temperature the electrochemical energy store can be used functionally. The maximum operating temperature of the electrochemical energy store is below the limit temperature of the electrochemical energy store. The maximum operating temperature can e.g. B. 80 ° C. Usually the maximum operating temperature as well as the limit temperature, e.g. B. 100 ° C, specified by the manufacturer of the electrochemical energy store.

Die Intumeszenztemperatur liegt bevorzugt oberhalb einer im Normalzustand üblichen oder/und ohne Brand erreichbaren Raumtemperatur. Besonders bevorzugt liegt die Intumeszenztemperatur oberhalb einer maximalen Betriebstemperatur des elektrochemischen Energiespeichers. Z. B. kann die Intumeszenztemperatur bei über 70°C, bevorzugt bei über 80°C, besonders bevorzugt bei üb er 95°C liegen.The intumescence temperature is preferably above a room temperature that is normal in the normal state and / or can be achieved without fire. The intumescence temperature is particularly preferably above a maximum operating temperature of the electrochemical energy store. For example, the intumescent temperature can be above 70 ° C, preferably above 80 ° C, particularly preferably above 95 ° C.

Eine obere Grenze für die Intumeszenztemperatur kann durch die Grenztemperatur gegeben sein. So kann eine obere Grenze für die Intumeszenztemperatur der Grenztemperatur des zu schützenden Elements entsprechen oder oberhalb der Grenztemperatur liegen. Letzteres ist durch Temperaturunterschiede innerhalb der erfindungsgemäßen Feststellanordnung denkbar. So kann es sein, dass intumeszente Material zeitweise eine höhere Temperatur als das zu schützende Element aufweist. Hierdurch kann das intumeszente Material eine Volumenvergrößerung erfahren, bevor das zu schützende Element die Grenztemperatur erreicht hat. So kann eine obere Grenze für die Intumeszenztemperatur in einem Bereich von bis zu 30°C, bevorzugt bis zu 20°C, besonders bevorzugt bis zu 10°C oberhalb d er Grenztemperatur liegen.An upper limit for the intumescent temperature can be given by the limit temperature. So an upper limit for the intumescence temperature can be the limit temperature of the to be protected Elements correspond or are above the limit temperature. The latter is conceivable due to temperature differences within the locking arrangement according to the invention. For example, intumescent material may have a higher temperature than the element to be protected. As a result, the intumescent material can experience an increase in volume before the element to be protected has reached the limit temperature. For example, an upper limit for the intumescence temperature can be in a range of up to 30 ° C., preferably up to 20 ° C., particularly preferably up to 10 ° C. above the limit temperature.

Alternativ werden Temperaturunterschiede innerhalb der Feststellanordnung nicht berücksichtigt oder sind nicht vorhanden. In diesem Fall kann eine obere Grenze für die Intumeszenztemperatur unterhalb der Grenztemperatur liegen. Insbesondere kann die Intumeszenztemperatur in einem Bereich von bis zu 30°C, bevorzugt bis zu 20°C, besonders bevorzugt bis zu 10°C unter der Grenztemperatur liegen.Alternatively, temperature differences within the locking arrangement are not taken into account or do not exist. In this case, an upper limit for the intumescent temperature can be below the limit temperature. In particular, the intumescence temperature can be in a range of up to 30 ° C., preferably up to 20 ° C., particularly preferably up to 10 ° C. below the limit temperature.

Die Intumeszenztemperatur ist insbesondere eine Temperatur, die im Bereich der Grenztemperatur liegt, z. B. der Grenztemperatur ± 30°C, bevorzugt der Grenztemperatur ± 20 °C, besonders bevorzugt der Grenztemperatur ±10 °C entspricht. Hierdurch kann sowohl eine zu frühe als auch eine zu späte Volumenvergrößerung vermieden werden.The intumescent temperature is in particular a temperature which is in the range of the limit temperature, e.g. B. the limit temperature ± 30 ° C, preferably the limit temperature ± 20 ° C, particularly preferably the limit temperature ± 10 ° C. In this way, an increase in volume that is too early or too late can be avoided.

Außerdem ist vorteilhafterweise vorgesehen, dass die Feststellanordnung ein Montageelement umfasst. Das Montageelement kann dabei eine rückwärtige Seite eines Gehäuses der Feststellanordnung zumindest teilweise bedecken. Dabei kann vorgesehen sein, dass eine erste Oberfläche des Montageelements dazu ausgebildet ist, im montierten Zustand der Tür zugewandt zu sein. Das intumeszente Material kann auf der ersten Oberfläche angebracht sein.It is also advantageously provided that the locking arrangement comprises a mounting element. The mounting element can at least partially cover a rear side of a housing of the locking arrangement. It can be provided that a first surface of the mounting element is designed to be mounted Condition of the door to be facing. The intumescent material can be attached to the first surface.

Ferner umfasst die Feststellanordnung eine Gleitschiene und eine Feststellvorrichtung. In der Gleitschiene ist ein Gleitelement gleitbar anordenbar, wobei das Gleitelement mit der Feststellvorrichtung wahlweise festellbar oder freiggebbar ist. Das Gleitelement ist außerdem bevorzugt mit einer Übertragungsvorrichtung verbindbar, wobei die Übertragungsvorrichtung eine Bewegung eines bewegbaren Teils der Tür in eine Bewegung des Gleitelements innerhalb der Gleitschiene umsetzt. Somit ist der bewegbare Teil der Tür vorteilhafterweise feststellbar, indem die Feststellvorrichtung das Gleitelement feststellt.Furthermore, the locking arrangement comprises a slide rail and a locking device. A sliding element can be slidably arranged in the sliding rail, the sliding element being optionally lockable or releasable with the locking device. The sliding element can also preferably be connected to a transmission device, the transmission device converting a movement of a movable part of the door into a movement of the sliding element within the slide rail. The movable part of the door can thus advantageously be locked by the locking device locking the sliding element.

Der elektrochemische Energiespeicher ist insbesondere eine Batterie oder ein Akkumulator und dient bevorzugt zur Versorgung der Feststellvorrichtung mit elektrischer Energie.The electrochemical energy store is in particular a battery or an accumulator and is preferably used to supply the locking device with electrical energy.

Bevorzugt ist der elektrochemische Energiespeicher an der Gleitschiene und/oder vor der Gleitschiene, angebracht. Durch die Erfindung ist der elektrochemische Energiespeicher vor großer Temperatureinwirkung geschützt. Vorteilhafterweise ist ein erster Luftspalt zwischen dem Montageelement und der Gleitschiene vorhanden, so dass eine Isolierung zwischen Montageelement und Gleitschiene vorhanden ist. Da der elektrochemische Energiespeicher bevorzugt an und/oder vor der Gleitschiene angebracht ist, ist auch eine Isolierung zwischen dem zu schützenden Element und dem Montageelement vorhanden. Außerdem kann, wie zuvor beschrieben, durch die intumeszente Wirkung des intumeszenten Materials ein zweiter Luftspalt zwischen Montageelement und Tür ausgebildet sein, so dass eine weitere Isolierung erreicht wird. Dadurch erreicht das zu schützende Element vorteilhafterweise eine maximale Betriebstemperatur auch im Brandfall nicht.The electrochemical energy store is preferably attached to the slide rail and / or in front of the slide rail. The invention protects the electrochemical energy store against the effects of high temperatures. A first air gap is advantageously present between the mounting element and the slide rail, so that there is insulation between the mounting element and the slide rail. Since the electrochemical energy store is preferably attached to and / or in front of the slide rail, there is also insulation between the element to be protected and the mounting element. In addition, as previously described, the intumescent effect of the intumescent Material a second air gap between the mounting element and door can be formed so that further insulation is achieved. As a result, the element to be protected advantageously does not reach a maximum operating temperature even in the event of a fire.

Insbesondere ist das zu schützende Element derart angeordnet, dass dieses einen größtmöglichen Abstand zu dem Montageelement aufweist. So ist besonders bevorzugt vorgesehen, dass die Gleitschiene und/oder die Feststellvorrichtung zwischen dem elektrochemischen Energiespeicher und dem Montageelement angeordnet sind.In particular, the element to be protected is arranged such that it is at the greatest possible distance from the mounting element. It is particularly preferably provided that the slide rail and / or the locking device are arranged between the electrochemical energy store and the mounting element.

Besonders bevorzugt ist der elektrochemische Energiespeicher mittig zwischen zwei der Befestigungselemente angeordnet. Da die Befestigungselemente eine Wärmebrücke der Feststellanordnung zur Tür darstellen, verhindert der beschriebene größtmögliche Abstand zwischen den Befestigungselementen und dem elektrochemischen Energiespeicher, dass Wärme auf kurzem Weg übertragen werden kann. Durch Verlängerung des Weges, über den die Wärme zu übertragen ist, um das zu schützende Element zu erreichen, wird die Wärme vorteilhaft auf die gesamte Feststellanordnung verteilt.The electrochemical energy store is particularly preferably arranged centrally between two of the fastening elements. Since the fastening elements represent a thermal bridge of the locking arrangement to the door, the described greatest possible distance between the fastening elements and the electrochemical energy store prevents heat from being transmitted in a short way. By extending the path over which the heat is to be transferred in order to reach the element to be protected, the heat is advantageously distributed over the entire locking arrangement.

Bevorzugt weist die Feststellanordnung zumindest ein Sollbruchelement auf. Dabei ist vorgesehen, dass die Befestigungselemente mit dem Montageelement über das zumindest eine Sollbruchelement verbunden sind. Besonders bevorzugt ist jedes Befestigungselement über ein eigenes Sollbruchelement mit dem Montageelement verbunden. Dabei ist insbesondere vorgesehen, dass durch die Sollbruchelemente ein Luftspalt zwischen dem Montageelement und den übrigen Komponenten der Feststellanordnung verbleibt. Das Sollbruchelement ist derart ausgestaltet, dass dieses bei Überschreiten einer Schmelztemperatur durch eine Volumenänderung des intumeszenten Materials plastisch verformbar ist. Somit gleicht das Sollbruchelement vorteilhafterweise die Bewegung des Montageelements aus, die sich aufgrund der Ausdehnung des intumeszenten Materials einstellt. Die Schmelztemperatur entspricht insbesondere maximal der Intumeszenztemperatur. Die Schmelztemperatur liegt bevorzugt oberhalb einer im Normalzustand üblichen oder/und ohne Brand erreichbaren Raumtemperatur. Besonders bevorzugt liegt die Schmelztemperatur oberhalb einer maximalen Betriebstemperatur des elektrochemischen Energiespeichers. Besonders bevorzugt ist zusätzlich vorgesehen, dass in das Sollbruchelement ein Gewindeelement eingespritzt ist, wobei die Gleitschiene und/oder die Feststellungsvorrichtung und/oder der elektrochemische Energiespeicher mit dem Gewindeelement verbindbar ist.The locking arrangement preferably has at least one predetermined breaking element. It is provided that the fastening elements are connected to the mounting element via the at least one predetermined breaking element. Each fastening element is particularly preferably connected to the mounting element via its own predetermined breaking element. It is particularly provided that the predetermined breaking elements create an air gap between the mounting element and the other components of the Locking arrangement remains. The predetermined breaking element is designed such that it can be plastically deformed when a melting temperature is exceeded due to a change in volume of the intumescent material. Thus, the predetermined breaking element advantageously compensates for the movement of the mounting element that occurs due to the expansion of the intumescent material. In particular, the melting temperature corresponds at most to the intumescent temperature. The melting temperature is preferably above a room temperature which is customary in the normal state and / or can be achieved without fire. The melting temperature is particularly preferably above a maximum operating temperature of the electrochemical energy store. It is particularly preferably additionally provided that a threaded element is injected into the predetermined breaking element, the slide rail and / or the locking device and / or the electrochemical energy store being connectable to the threaded element.

Besonders bevorzugt ist das Sollbruchelement auf einer zweiten Oberfläche des Montageelements, die der ersten Oberfläche gegenüberliegt, angeordnet. Dabei ist vorteilhafterweise vorgesehen, dass die Befestigungselemente das Sollbruchelement durch eine Volumenänderung des intumeszenten Materials plastisch verformen. Insbesondere ist vorgesehen, dass die Befestigungselemente so lange in das Sollbruchelement eindringen, bis die Befestigungselemente an der zweiten Oberfläche des Montagelements anliegen. Durch das Anliegen an der zweiten Oberfläche ist ein Verschieben des Montageelements durch die Volumenänderung des intumeszenten Materials begrenzt, so dass ein Herabfallen des Montageelements und damit der Feststellanordnung verhindert ist.The predetermined breaking element is particularly preferably arranged on a second surface of the mounting element, which lies opposite the first surface. It is advantageously provided that the fastening elements plastically deform the predetermined breaking element by changing the volume of the intumescent material. In particular, it is provided that the fastening elements penetrate into the predetermined breaking element until the fastening elements rest on the second surface of the mounting element. Due to the fact that it bears against the second surface, displacement of the mounting element is limited by the change in volume of the intumescent material, so that the mounting element and thus the locking arrangement are prevented from falling down.

Bevorzugt weist die Feststellanordnung außerdem das Gehäuse auf, wobei das Gehäuse mit einer Vielzahl von Schlitzen versehen ist. Die Schlitze sind insbesondere derart angeordnet, dass Wärme, die sich entlang des Gehäuses ausbreitet, einen möglichst langen Weg bis zum Erreichen des elektrochemischen Energiespeichers zurückzulegen hat. Somit sind die Schlitze insbesondere in Form eines Labyrinths angeordnet.The locking arrangement preferably also has the housing, the housing being provided with a multiplicity of slots. In particular, the slots are arranged in such a way that heat that propagates along the housing has to travel as long as possible until the electrochemical energy store is reached. The slots are thus arranged in particular in the form of a labyrinth.

Des Weiteren betrifft die Erfindung einen Türbetätiger für eine Tür. Der Türbetätiger umfasst die zuvor beschriebene Feststellanordnung. Außerdem umfasst der Türbetätiger eine Betätigungsvorrichtung für die Tür, die insbesondere eine Türschließvorrichtung ist. Die Betätigungsvorrichtung ist mit der Feststellanordnung, insbesondere mit dem Gleitelement der Feststellanordnung, wirkverbunden, so dass eine Betätigung der Tür in einer Bewegung des Gleitelements innerhalb der Feststellanordnung resultiert.Furthermore, the invention relates to a door actuator for a door. The door actuator comprises the locking arrangement described above. In addition, the door operator comprises an actuating device for the door, which is in particular a door closing device. The actuating device is operatively connected to the arresting arrangement, in particular to the sliding element of the arresting arrangement, so that actuation of the door results in movement of the sliding element within the arresting arrangement.

Der Türbetätiger ist bevorzugt derart ausgebildet, dass das Montageelement der Feststellanordnung an einer Zarge der Tür und die Betätigungsvorrichtung an einem Türblatt der Tür anbringbar sind. Alternativ oder zusätzlich ist der Türbetätiger bevorzugt ausgebildet, dass das Montageelement an dem Türblatt der Tür und die Betätigungsvorrichtung an der Zarge der Tür anbringbar ist.The door actuator is preferably designed such that the mounting element of the locking arrangement can be attached to a frame of the door and the actuating device can be attached to a door leaf of the door. As an alternative or in addition, the door actuator is preferably designed such that the mounting element can be attached to the door leaf of the door and the actuating device can be attached to the frame of the door.

Die Erfindung wird nun anhand eines Ausführungsbeispiels näher beschrieben. Dabei zeigen:

Fig. 1
eine schematische Darstellung eines Türbetätigers nach einem Ausführungsbeispiel der Erfindung,
Fig. 2
eine erste schematische Darstellung einer Feststellanordnung des Türbetätigers nach dem Ausführungsbeispiel der Erfindung,
Fig. 3
eine zweite schematische Darstellung einer Feststellanordnung des Türbetätigers nach dem Ausführungsbeispiel der Erfindung, und
Fig. 4
eine dritte schematische Darstellung einer Feststellanordnung des Türbetätigers nach dem Ausführungsbeispiel der Erfindung.
The invention will now be described in more detail using an exemplary embodiment. Show:
Fig. 1
1 shows a schematic illustration of a door operator according to an embodiment of the invention,
Fig. 2
1 shows a first schematic illustration of a locking arrangement of the door actuator according to the exemplary embodiment of the invention,
Fig. 3
a second schematic representation of a locking arrangement of the door actuator according to the embodiment of the invention, and
Fig. 4
a third schematic representation of a locking arrangement of the door actuator according to the embodiment of the invention.

Die Fig. 1 zeigt schematisch einen Türbetätiger 2 nach einem Ausführungsbeispiel der Erfindung. Der Türbetätiger 2 ist an einer Tür angeordnet, wobei die Tür ein Türblatt 11 und eine Zarge 12 umfasst. Der Türbetätiger 2 weist eine erfindungsgemäße Feststellanordnung 1 und eine Betätigungsvorrichtung 16, wobei in dem dargestellten Ausführungsbeispiel die Feststellanordnung 1 an der Zarge 12 und die Betätigungsvorrichtung 16 an dem Türblatt befestigt ist.The Fig. 1 shows schematically a door operator 2 according to an embodiment of the invention. The door operator 2 is arranged on a door, the door comprising a door leaf 11 and a frame 12. The door actuator 2 has a locking arrangement 1 according to the invention and an actuating device 16, the locking arrangement 1 being fastened to the frame 12 and the actuating device 16 to the door leaf in the exemplary embodiment shown.

Die Tür 11, 12 ist insbesondere eine Brandschutztür. Tritt ein Brand auf, so entsteht auf der dem Brand gegenüberliegenden Seite der Brandschutztür eine Temperatur von über 350°C, insbesondere über 380°C. In dem Beispiel in Figur 1 ist der Türbetätiger 2 auf einer dem Brand gegenüberliegenden Seite der Tür 11, 12 angeordnet. Um Beschädigungen des Türbetätigers 2 zu verhindern, muss dieser vor hohen Temperaturen geschützt werden Insbesondere ein elektrochemischer Energiespeicher 10 (vgl. Fig. 2) des Türbetätigers 2 darf derart hohen Temperaturen nicht ausgesetzt werden. Ansonsten besteht die Gefahr, dass der elektrochemische Energiespeicher 10 explodiert und eine Ausbreitung des Brandes bewirkt. Damit wäre die Funktion der Brandschutztür nicht mehr gegeben.The door 11, 12 is in particular a fire door. If a fire occurs, a temperature of over 350 ° C, in particular over 380 ° C, arises on the side of the fire protection door opposite the fire. In the example in Figure 1 the door actuator 2 is arranged on a side of the door 11, 12 opposite the fire. In order to prevent damage to the door actuator 2, it must be protected from high temperatures. In particular, an electrochemical energy store 10 (cf. Fig. 2 ) of the door operator 2 must not be exposed to such high temperatures. Otherwise there is a risk that the electrochemical energy store 10 explodes, causing the fire to spread. This would mean that the fire door would no longer function.

In Figur 2 ist eine schematische Ansicht der Feststellanordnung 1 dargestellt. Die Feststellanordnung 1 umfasst eine Gleitschiene 8, in der ein nicht gezeigtes Gleitelement gleitbar angeordnet ist. Das Gleitelement ist insbesondere mit dem Türbetätiger 16 verbunden, so dass eine Bewegung des Türblatts 11 in eine Bewegung des Gleitelements umgesetzt wird. Über eine Feststellvorrichtung 9 ist das Gleitelement feststellbar oder freigebbar, so dass auch das Türblatt 11 feststellbar oder freigebbar ist. Das Türblatt 11 ist vorteilhafterweise in einer geöffneten Stellung feststellbar, wobei das Türblatt 11 insbesondere im Falle eines Brandes freigegeben wird. Zusätzlich ist vorgesehen, dass der Türbetätiger 16 das Türblatt 11 nach der Freigabe in die geschlossene Stellung überführt. Somit ist eine Brandschutztür mittels der Feststellanordnung 1 realisierbar.In Figure 2 a schematic view of the locking arrangement 1 is shown. The locking arrangement 1 comprises a slide rail 8, in which a slide element, not shown, is slidably arranged. The sliding element is in particular connected to the door actuator 16, so that a movement of the door leaf 11 is converted into a movement of the sliding element. The sliding element can be locked or released via a locking device 9, so that the door leaf 11 can also be locked or released. The door leaf 11 can advantageously be locked in an open position, the door leaf 11 being released in the event of a fire in particular. In addition, it is provided that the door operator 16 transfers the door leaf 11 into the closed position after the release. A fire protection door can thus be realized by means of the locking arrangement 1.

Die Feststellvorrichtung 9 wird durch den elektrochemischen Energiespeicher 10 mit elektrischer Energie versorgt. Der elektrochemische Energiespeicher 10 ist bevorzugt ein Akkumulator oder eine Batterie, so dass dieser vor hohen Temperaturen, wie sie insbesondere in Brandfällen auftreten können, geschützt werden müssen.The locking device 9 is supplied with electrical energy by the electrochemical energy store 10. The electrochemical energy store 10 is preferably an accumulator or a battery, so that it must be protected against high temperatures, as can occur in particular in the event of a fire.

Der elektrochemische Energiespeicher 10 ist vor der Gleitschiene 8 montiert. Somit weist der elektrochemische Energiespeicher 10 einen größtmöglichen Abstand zu der Zarge 12 auf. Da die Zarge 12 dem Brandherd am nächsten ist, ist davon auszugehen, dass die Zarge 12 neben dem Türblatt 11 die heißesten Stellen darstellen. Durch den größtmöglichen Abstand des elektrochemischen Energiespeichers 10 zu der Zarge ist bereits eine Übertragung von Wärme erschwert.The electrochemical energy store 10 is mounted in front of the slide rail 8. The electrochemical energy store 10 thus has the greatest possible distance from the frame 12. Since the frame 12 is closest to the source of the fire, it can be assumed that the frame 12 next to the door leaf 11 represent the hottest places. The greatest possible distance between the electrochemical energy store 10 and the frame already makes it difficult to transfer heat.

Weiterhin ist vorgesehen, dass die Gleitschiene 8 über ein Montageelement 3 mit der Zarge 12 verbunden ist. Die Verbindung von Montageelement 3 und Zarge 12 ist über eine Vielzahl von Befestigungselementen 5 realisiert. Die Befestigungselemente 5 sind bevorzugt Schrauben oder Bolzen. Auf einer ersten Oberfläche 6 des Montageelements 3 ist ein intumeszentes Material 4 angebracht. Somit befindet sich das intumeszente Material 4 zwischen dem Montageelement 3 und der Zarge 12. Die Funktion des intumeszenten Materials 4 wird bei der Beschreibung der Figur 3 genauer erklärt.It is also provided that the slide rail 8 is connected to the frame 12 via a mounting element 3. The connection of mounting element 3 and frame 12 is realized via a large number of fastening elements 5. The fastening elements 5 are preferably screws or bolts. An intumescent material 4 is attached to a first surface 6 of the mounting element 3. Thus, the intumescent material 4 is located between the mounting element 3 and the frame 12. The function of the intumescent material 4 is described in the Figure 3 explained in more detail.

Zwischen dem Montageelement 3 und der Gleitschiene 8 ist ein erster Luftspalt 100 vorhanden. Der erste Luftspalt 100 dient als Isolierung der Gleitschiene 8 und damit auch des elektrochemischen Energiespeichers 10 gegenüber der Zarge 12. Zur Ausbildung des ersten Luftspalts 100 sind Sollbruchelemente 13 vorhanden, die als Abstandshalter dienen. Die Sollbruchelemente 13 sind daher auf einer der ersten Oberfläche 6 gegenüberliegenden zweiten Oberfläche des Montageelements 3 angeordnet. Weiterhin ist vorgesehen, dass die Befestigungselemente 5 durch eine Bohrung der Sollbruchelemente 13 verlaufen, wobei Köpfe der Befestigungselemente 5 an den Sollbruchelementen 13 anliegen. Dies bedeutet, dass das Montageelement 3 von den Befestigungselementen 5 über die Sollbruchelemente 13 mit der Zarge verbunden ist. Ebenso ist die Gleitschiene 8 über die Sollbruchelemente 13 mit dem Montageelement 3 verbunden. Dies ist beispielsweise dadurch realisiert, dass die Gleitschiene 8 mit den Sollbruchelementen 13 verschraubt ist.A first air gap 100 is present between the mounting element 3 and the slide rail 8. The first air gap 100 serves as insulation for the slide rail 8 and thus also for the electrochemical energy store 10 with respect to the frame 12. To form the first air gap 100, predetermined breaking elements 13 are provided which serve as spacers. The predetermined breaking elements 13 are therefore arranged on a second surface of the mounting element 3 opposite the first surface 6. Furthermore, it is provided that the fastening elements 5 run through a bore in the predetermined breaking elements 13, heads of the fastening elements 5 abutting the predetermined breaking elements 13. This means that the mounting element 3 is connected to the frame by the fastening elements 5 via the predetermined breaking elements 13. Likewise, the slide rail 8 is connected to the mounting element 3 via the predetermined breaking elements 13. This is achieved, for example, in that the slide rail 8 is screwed to the predetermined breaking elements 13.

Die Sollbruchelemente 13 bilden jedoch auch eine Wärmebrücke 400, über die Wärme von dem Montageelement 3 und damit von der Zarge 12 an die die Gleitschiene 8 und damit an den elektrochemischen Energiespeicher 10 übertragbar ist. Die übertragbare Wärme ist jedoch begrenzt, wie in Figur 3 gezeigt ist.However, the predetermined breaking elements 13 also form a thermal bridge 400, via the heat from the mounting element 3 and thus from the frame 12 to the slide rail 8 and thus to the electrochemical one Energy storage 10 is transferable. However, the transferable heat is limited, as in Figure 3 is shown.

Figur 3 zeigt den Fall einer großen Hitzeeinwirkung 500 auf die Feststellanordnung 1 aus Figur 2. Hitzeeinwirkung 500 entspricht einer Wärmeenergie, die durch Temperaturen der Zarge 12 von 100°C bis 380°C erzeugt wird. Figure 3 shows the case of a large heat exposure 500 on the locking arrangement 1 Figure 2 , Exposure to heat 500 corresponds to thermal energy which is generated by temperatures of the frame 12 from 100 ° C. to 380 ° C.

Eine Intumeszenztemperatur des intumeszenten Materials 4 beträgt zumindest 100°C. Somit überschreitet die Hitzeeinwi rkung 500 die Intumeszenztemperatur, wodurch das intumeszente Material 4 sein Volumen vergrößert. Insbesondere erfolgt ein Aufschäumen des intumeszenten Materials 4, wobei sich dessen Volumen bevorzugt um den Faktor 12 vergrößert. Eine Vergrößerung des Volumens des intumeszenten Materials 4 ist dadurch möglich, dass die Sollbruchelemente 13 der Ausdehnung des intumeszenten Materials 4 nachgeben. Dies wird nachfolgend beschrieben.An intumescent temperature of the intumescent material 4 is at least 100 ° C. Thus, the heat influence 500 exceeds the intumescent temperature, as a result of which the intumescent material 4 increases its volume. In particular, intumescent material 4 is foamed, its volume preferably increasing by a factor of 12. An increase in the volume of the intumescent material 4 is possible in that the predetermined breaking elements 13 give way to the expansion of the intumescent material 4. This is described below.

Die Wärme, die aus der Hitzeeinwirkung 500 resultiert, wird auch durch die Wärmebrücke 400 an die Gleitschiene 8 geleitet. Somit erwärmen sich auch die Sollbruchelemente 13. Die Sollbruchelemente 13 sind derart ausgebildet, dass diese bei Überschreiten der Intumeszenztemperatur ihre Festigkeit verlieren und plastisch verformbar werden. Somit wird durch die Ausdehnung des intumeszenten Materials 4 eine Verformung der Sollbruchelemente erreicht, da die Köpfe der Befestigungselemente 5 in das Sollbruchelement eindringen.The heat resulting from the action of heat 500 is also conducted through the thermal bridge 400 to the slide rail 8. The predetermined breaking elements 13 thus also heat up. The predetermined breaking elements 13 are designed such that they lose their strength when the intumescent temperature is exceeded and become plastically deformable. The expansion of the intumescent material 4 thus results in a deformation of the predetermined breaking elements, since the heads of the fastening elements 5 penetrate the predetermined breaking element.

Durch die beschriebenen Maßnahmen hebt das Montageelement 3 von der Zarge 12 ab, so dass sich ein zweiter Luftspalt 200 zwischen dem Montageelement 3 und der Zarge 12 einstellt. Der zweite Luftspalt 200 bildet somit eine weitere Isolierung. Das Abheben wird durch ein Anliegen der Köpfe der Befestigungselemente 5 an der zweiten Oberfläche des Montageelements 3 begrenzt, d.h., die Köpfe der Befestigungselemente 5 haben die Sollbruchstelle 13 vollständig durchdrungen. Somit wird auch die Wirksamkeit der Wärmebrücke 400 deutlich vermindert. Ein Herabfallen der Feststellanordnung 1 ist dadurch verhindert, dass die die Befestigungselemente 5 direkt an dem Montageelement 3 anliegen.As a result of the measures described, the mounting element 3 lifts off the frame 12, so that a second air gap 200 is established between the mounting element 3 and the frame 12. The second air gap 200 thus forms further insulation. Lifting is limited by the heads of the fastening elements 5 resting on the second surface of the mounting element 3, ie the heads of the fastening elements 5 have completely penetrated the predetermined breaking point 13. The effectiveness of the thermal bridge 400 is thus also significantly reduced. Falling down of the locking arrangement 1 is prevented by the fastening elements 5 lying directly against the mounting element 3.

Durch den ersten Luftspalt 100 und den zweiten Luftspalt 200 ist eine große Isolationswirkung vorhanden. Daher ist der elektrochemische Energiespeicher 10 wirksam vor der Hitzeeinwirkung 500 geschützt und verbleibt stets innerhalb seiner zulässigen Betriebstemperaturen. Insbesondere verbleibt eine Temperatur des elektrochemischen Energiespeichers 10 unterhalb von 100°C.The first air gap 100 and the second air gap 200 provide a great insulation effect. The electrochemical energy store 10 is therefore effectively protected from the action of heat 500 and always remains within its permissible operating temperatures. In particular, a temperature of the electrochemical energy store 10 remains below 100 ° C.

Figur 4 zeigt weitere vorteilhafte Maßnahmen, die einen Schutz des elektrochemischen Energiespeichers 10 bewirken. So ist zunächst vorteilhaft, den elektrochemischen Energiespeicher 10 mittig zwischen zwei Befestigungselementen 5 vorzusehen. Daher ist der elektrochemische Energiespeicher 10 aus der in Figur 4 gezeigten Position insbesondere entlang der Zentrierrichtung 500 zu verschieben, bis der elektrochemische Energiespeicher 10 mittig zwischen den Befestigungselementen 5 angeordnet ist. Figure 4 shows further advantageous measures that protect the electrochemical energy store 10. It is initially advantageous to provide the electrochemical energy store 10 centrally between two fastening elements 5. Therefore, the electrochemical energy store 10 from the in Figure 4 position shown, in particular along the centering direction 500, until the electrochemical energy store 10 is arranged centrally between the fastening elements 5.

Außerdem ist es vorteilhaft, einen dritten Luftspalt 300 zwischen den Befestigungselementen 5 und der Gleitschiene 8 vorzusehen. Ebenso ist vorteilhaft, ein Gewindeelement 17 in dem Sollbruchelement 13 vorzusehen, insbesondere das Gewindeelement 17 in das Sollbruchelement 13 einzuspritzen. Auf diese Weise wird die Wirksamkeit der in Figur 2 gezeigten Wärmebrücke 400 deutlich abgeschwächt, so dass weniger Wärme auf die Gleitschiene 8 und damit auf den elektrochemischen Energiespeicher 10 übertragbar ist.It is also advantageous to provide a third air gap 300 between the fastening elements 5 and the slide rail 8. It is also advantageous to provide a threaded element 17 in the predetermined breaking element 13, in particular injecting the threaded element 17 into the predetermined breaking element 13. In this way, the effectiveness of the Figure 2 shown thermal bridge 400 significantly weakened, so that less heat can be transferred to the slide rail 8 and thus to the electrochemical energy store 10.

Außerdem sind in Figur 4 schematisch Schlitze 14 gezeigt, die insbesondere in einem Gehäuse der Feststellanordnung 1 vorgesehen sind. Die Schlitze 14 weisen eine Labyrinth-Anordnung auf, so dass ein Wärmestrom 15 von der Zarge 12 zu dem elektrochemischen Energiespeicher 10 einen größeren Weg über das Gehäuse zurücklegen muss, als wenn die Schlitze 14 in dem Gehäuse nicht vorhanden wären. Durch alle diese Maßnahmen ist der elektrochemische Energiespeicher 10 derart vor einer Aufheizung im Brandfall geschützt, dass dieser stets innerhalb der zulässigen Betriebstemperaturen verbleibt.In addition, in Figure 4 schematically shown slots 14, which are provided in particular in a housing of the locking arrangement 1. The slots 14 have a labyrinth arrangement, so that a heat flow 15 from the frame 12 to the electrochemical energy store 10 has to travel a greater distance over the housing than if the slots 14 were not present in the housing. All of these measures protect the electrochemical energy store 10 from heating up in the event of a fire in such a way that it always remains within the permissible operating temperatures.

Sollte ein Brand auf derjenigen Seite der Tür 11, 12 ausbrechen, auf der die Feststellanordnung 1 befestigt ist, so ist eine sehr hohe Gefahr einer Überhitzung des elektrischen Energiespeichers 10 gegeben. In diesem Fall entfällt im Gegensatz zu einem Brand auf der gegenüberliegenden Seite der Tür 11, 12 die Isolationswirkung der Tür 11, 12, da die Feststellanordnung 1 dem Brand direkt ausgesetzt ist. Durch das zuvor beschriebene Abheben des Montageelements 3 ist eine größtmögliche Isolation sichergestellt. Daher wird ein Aufheizen des elektrischen Energiespeichers 10 verzögert. Durch das Verzögern der Aufheizung wird somit auch eine Überhitzung des Energiespeichers 10 so lange wie möglich verhindert.Should a fire break out on the side of the door 11, 12 on which the arresting arrangement 1 is fastened, there is a very high risk of the electrical energy store 10 overheating. In this case, in contrast to a fire on the opposite side of the door 11, 12, the insulating effect of the door 11, 12 is eliminated, since the locking arrangement 1 is directly exposed to the fire. The above-described lifting of the mounting element 3 ensures the greatest possible insulation. Heating of the electrical energy store 10 is therefore delayed. By delaying the heating, overheating of the energy store 10 is thus prevented as long as possible.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
FeststellanordnungLocking assembly
22
Türbetätigerdoor actuators
33
Montageelementmounting element
44
intumeszentes Materialintumescent material
55
Befestigungselementfastener
66
erste Oberfläche des Montageelementsfirst surface of the mounting element
77
zweite Oberfläche des Montageelementssecond surface of the mounting element
88th
Gleitschieneslide
99
FeststellvorrichtungLocking device
1010
elektrochemischer Energiespeicherelectrochemical energy storage
1111
Türblattdoor leaf
1212
Zargeframe
1313
SollbruchelementBreaking element
1414
Schlitzeslots
1515
Wärmestromheat flow
1616
Betätigungsvorrichtungactuator
1717
Gewindeelementthreaded element
100100
erster Luftspaltfirst air gap
200200
zweiter Luftspaltsecond air gap
300300
dritter Luftspaltthird air gap
400400
Wärmebrückethermal bridge
500500
Hitzeeinwirkungheat effect
600600
Zentrierrichtungcentering direction

Claims (11)

  1. A hold-open arrangement (1) for a door (11, 12),
    wherein the hold-open arrangement comprises a sliding rail (8), in which a sliding element can be slidingly disposed, and comprises a hold-open device (9), wherein the sliding element is optionally arrestable and releasable with the hold-open device (9),
    wherein the hold-open arrangement includes an electro-chemical energy accumulator (10), which is to be protected from a temperature above a limit temperature,
    characterized in that
    the hold-open arrangement (1) comprises an intumescent material (4), which, upon exceeding an intumescent temperature, has a volume that is larger than below the intumescent temperature,
    wherein the intumescent material (4) is disposed behind the electro-chemical energy accumulator (10) in such a manner that, in the mounted condition of the hold-open arrangement (1) at the door, the intumescent material (4) is located between the electro-chemical energy accumulator (10) and the door (11, 12) such that, upon a volume increase of the intumescent material (4), the electro-chemical energy accumulator (10) is pushed away from the door (11, 12), whereby the distance is increased between the electro-chemical energy accumulator and the door,
    wherein moreover the intumescent material forms an insulation layer between the electro-chemical energy accumulator and the door.
  2. The hold-open arrangement (1) according to claim 1, characterized in that the intumescent material (4) forms at least partially a backside of the hold-open arrangement (1), which with the mounted hold-open arrangement points towards the door, and/or is connected to the backside via a material, which at 25 °C has a coefficient of thermal conductivity of at least 5 W/mK, preferably of 40 W/mK, particularly preferred of 100 W/mK.
  3. The hold-open arrangement (1) according to any of the preceding claims, characterized in that, upon exceeding an intumescent temperature, the intumescent material (4) has a volume, which corresponds at least to 5 times, in particular to 8.5 times, particularly preferred to 12 times the volume of the intumescent material (4) below the intumescent temperature.
  4. The hold-open arrangement (1) according to any of the preceding claims, comprising
    - a mounting element (3), wherein in the mounted condition, a first surface of the mounting element is formed for being oriented towards the door, and the sliding rail (8) is connectable to a casing (12) via the mounting element (3).
  5. The hold-open arrangement (1) according to claim 4, characterized in that the electro-chemical energy accumulator (10) is disposed in such a manner that the latter has a largest possible distance to the mounting element (3).
  6. The hold-open arrangement (1) according to any of the preceding claims, characterized in that attachment elements (5) are provided for the connection to the door and the electro-chemical energy accumulator (10) is disposed in the middle between two of the attachment elements (5).
  7. The hold-open arrangement (1) according to the claims 4 and 6, characterized in that the attachment element (5) is connected to the mounting element (3) via at least one pre-designed break-off element (13), wherein, upon exceeding a melting temperature, which at maximum corresponds to the intumescent temperature, the pre-designed break-off element (13) is plastically deformable by means of change in volume of the intumescent material (4).
  8. The hold-open arrangement (1) according to claim 7, characterized in that the pre-designed break-off element (13) is disposed on a second surface (7) of the mounting element (3), which surface is opposite the first surface (6).
  9. The hold-open arrangement (1) according to any of the preceding claims, characterized by a housing, wherein the housing includes a plurality of slots (14) and the slots (14) are disposed in particular in the shape of a labyrinth.
  10. A door actuator (2) for a door (11, 12) comprising a hold-open arrangement (1) according to any of the preceding claims and an actuating device (16) for the door (11, 12), wherein the actuating device (16) is operatively connected to the hold-open arrangement (1), in particular to the sliding element of the hold-open arrangement (1).
  11. The door actuator (2) according to the claims 4 and 10, characterized in that the mounting element (3) is mountable to a door leaf (11) of the door (11, 12) and the actuating device (16) at a casing (12) of the door (11, 12), and/or the mounting element (3) is mountable to the casing (12) of the door (11, 12) and the actuating device (16) is mountable to the door leaf (11) of the door (11, 12).
EP15203025.0A 2015-03-02 2015-12-29 Locking assembly and door actuator with locking assembly Active EP3064684B1 (en)

Applications Claiming Priority (1)

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DE102015102914.6A DE102015102914A1 (en) 2015-03-02 2015-03-02 Locking arrangement and door operator with locking arrangement

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3425150B1 (en) * 2017-07-06 2021-03-10 dormakaba Deutschland GmbH Door device
EP3943697A1 (en) * 2020-07-20 2022-01-26 dormakaba Deutschland GmbH Fire-protection fastening device for fixing a door actuator
EP4012141A1 (en) * 2020-12-14 2022-06-15 dormakaba Deutschland GmbH Assembly bracket for a door actuator

Citations (2)

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Publication number Priority date Publication date Assignee Title
US4506407A (en) * 1983-07-18 1985-03-26 Schlage Lock Company Releasable hold-open device for a door closer
US20140260929A1 (en) * 2013-03-15 2014-09-18 Sargent Manufacturing Company Door lock access control component mounting

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Publication number Priority date Publication date Assignee Title
NL193462C (en) * 1993-03-10 1999-11-02 Petrus Antonius Besselink Door closer with locking device and temperature-sensitive release mechanism.
JPH10118208A (en) * 1996-10-16 1998-05-12 Ykk Architect Prod Kk Fireproof structure of automatic door
DE19726741A1 (en) * 1997-06-24 1999-01-07 Geze Gmbh & Co Door operator
DE19753132C5 (en) * 1997-11-29 2010-05-20 Geze Gmbh Fire protection sliding door system
DE10001425B4 (en) * 1999-01-18 2013-06-06 Geze Gmbh Door, preferably fire door

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506407A (en) * 1983-07-18 1985-03-26 Schlage Lock Company Releasable hold-open device for a door closer
US20140260929A1 (en) * 2013-03-15 2014-09-18 Sargent Manufacturing Company Door lock access control component mounting

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