EP1293633B1 - Door closer - Google Patents

Door closer Download PDF

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Publication number
EP1293633B1
EP1293633B1 EP02020109A EP02020109A EP1293633B1 EP 1293633 B1 EP1293633 B1 EP 1293633B1 EP 02020109 A EP02020109 A EP 02020109A EP 02020109 A EP02020109 A EP 02020109A EP 1293633 B1 EP1293633 B1 EP 1293633B1
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EP
European Patent Office
Prior art keywords
valve
valve body
piston
door closer
bore
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.)
Expired - Lifetime
Application number
EP02020109A
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German (de)
French (fr)
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EP1293633A3 (en
EP1293633A2 (en
Inventor
Rudi Feucht
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Geze GmbH
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Geze GmbH
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Publication date
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Publication of EP1293633A2 publication Critical patent/EP1293633A2/en
Publication of EP1293633A3 publication Critical patent/EP1293633A3/en
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Publication of EP1293633B1 publication Critical patent/EP1293633B1/en
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    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/12Special devices controlling the circulation of the liquid, e.g. valve arrangement
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/102Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with rack-and-pinion transmission between driving shaft and piston within the closer housing
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/10Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
    • E05Y2900/132Doors

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  • Fluid-Damping Devices (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Lock And Its Accessories (AREA)

Abstract

Door lock comprises a housing, a plunger (3) linearly guided in the housing, and a hydraulic damping unit. The inner chamber of the housing is filled with a damping medium and is divided into two chambers. An overflow valve is arranged in the plunger for the passage of the damping medium. when the door leaf is opened. A valve body (18) can be guided into the plunger bore (14) and is sealed with the inner surface of the plunger bore using a seal (19). Preferred Features: The plunger bore has a unit for limiting the sliding movement of the valve body. The plunger bore has a recess. The valve body has locking tongues (20) which interact with the plunger bore in a locking manner.

Description

Die Erfindung betrifft einen Türschließer nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a door closer according to the preamble of patent claim 1.

Aus der EP 0 328 917 A1 ist ein Türschließer mit den Merkmalen des Oberbegriffs des Patentanspruchs 1 bekannt. Der als Gehäuse bezeichnete Ventilkörper ist in eine Bohrung des Kolbens einschraubbar.From the EP 0 328 917 A1 a door closer with the features of the preamble of claim 1 is known. The designated as housing valve body can be screwed into a bore of the piston.

Aus der DE 198 08 292 A1 ist ein weiterer Türschließer zum Schließen eines Türflügels bekannt. Der Türschließer weist ein Gehäuse auf, in welchem ein Kolben linear verschiebbar geführt ist. Ein als Schließerfeder ausgebildeter mechanischer Energiespeicher wirkt zum selbsttätigen Schließen des Türflügels auf ein als Schließerwelle ausgebildetes Abtriebsglied, an welchem ein kraftübertragendes Gestänge anschließbar ist. Eine hydraulische Dämpfungseinrichtung bewirkt ein gedämpftes Schließen des Türflügels, wobei der Gehäuseinnenraum mit einem Dämpfungsmedium gefüllt ist und der Kolben den Gehäuseinnenraum flüssigkeitsdicht in zwei Gehäusekammern unterteilt. Beim Öffnen des Türflügels vergrößert sich durch die Verschiebung des Kolbens eine der Gehäusekammern; das Dämpfungsmedium strömt dann durch ein im Kolben angeordnetes Überströmventil von der sich verkleinernden in die sich vergrößernde Gehäusekammer. Beim Schließen des Türflügels ist dieses Überströmventil geschlossen. Das Dämpfungsmedium strömt nun durch ein nicht dargestelltes Dämpfungsventil, welches z.B. in einem in dem Gehäuse verlaufenden Überströmkanal angeordnet ist, aus der sich nun verkleinernden Gehäusekammer in die andere Gehäusekammer. Der Türflügel kann beim Schließvorgang "überdrückt" werden, d.h. er kann manuell schneller in Schließrichtung bewegt werden, als es die Dämpfungseinrichtung eigentlich vorsieht. In diesem Fall entsteht in der sich beim Schließen verkleinernden Gehäusekammer ein großer Überdruck des nur wenig komprimierbaren Dämpfungsmediums. Um die Kolben-Zylinder-Einrichtung oder das kraftübertragende Gestänge in diesem Fall vor Beschädigungen zu schützen, ist im Kolben ein Überdruckventil angeordnet, welches bei einem bestimmten Überdruck des Dämpfungsmediums wirksam wird und das Abfließen des Dämpfungsmediums in die andere Gehäusekammer ermöglicht. Ein Ausführungsbeispiel der DE 198 08 292 A1 (dort Figur 1) zeigt eine separate Anordnung von Überströmventil und Überdruckventil im Kolben. Dieses Ausführungsbeispiel ist in der Herstellung zeit- und kostenaufwendig, da in den Kolben mehrere Bohrungen eingebracht werden müssen und die Ventile separat montiert werden. Ein weiteres Ausführungsbeispiel der DE 198 08 292 A1 (dort Figur 2) zeigt einen Kolben mit einem stirnseitig am Kolben montierten kappenförmigen Formteil, in welchem ein kombiniertes Ventil (Kombination aus Rückschlagventil und Überdruckventil) angeordnet ist. Auch dieses Ausführungsbeispiel ist in der Herstellung zeit- und kostenaufwendig, da die Herstellung und Montage eines separaten Formteils zur Aufnahme des Ventils erforderlich ist und der Kolben für die Montage des Formteils vorbehandelt werden muss (Abdrehen des Kolbens zur Schaffung eines geringeren Querschnitts im Bereich des Formteils, zusätzliche Bohrung zur Verdrehsicherung).From the DE 198 08 292 A1 Another door closer is known for closing a door leaf. The door closer has a housing in which a piston is guided linearly displaceable. A designed as a closing spring mechanical energy storage acts for the automatic closing of the door leaf on a trained as a closer shaft output member to which a force-transmitting linkage is connected. A hydraulic damping device causes a muted closing of the door leaf, wherein the housing interior is filled with a damping medium and the piston the housing interior liquid-tightly divided into two housing chambers. When opening the door increases by the displacement of the piston one of the housing chambers; the damping medium then flows through an overflow valve arranged in the piston from the decreasing into the enlarging housing chamber. When closing the door, this overflow valve is closed. The damping medium now flows through an unillustrated damping valve, which is arranged, for example, in an overflow channel extending in the housing, out of the now smaller housing chamber into the other housing chamber. The door can be "overpressed" during the closing process, ie it can be moved manually faster in the closing direction, as it actually provides the damping device. In this case, a large overpressure of the only slightly compressible damping medium arises in the housing chamber, which shrinks when it closes. In order to protect the piston-cylinder device or the force-transmitting linkage in this case from damage, a pressure relief valve is arranged in the piston, which is effective at a certain pressure of the damping medium and allows the drainage of the damping medium in the other housing chamber. An embodiment of the DE 198 08 292 A1 (there FIG. 1 ) shows a separate arrangement of overflow valve and pressure relief valve in the piston. This embodiment is time-consuming and expensive to manufacture, as in the piston several holes must be introduced and the valves are mounted separately. Another embodiment of the DE 198 08 292 A1 (there FIG. 2 ) shows a piston with a frontally mounted on the piston cap-shaped molding in which a combined valve (combination of check valve and pressure relief valve) is arranged. Also, this embodiment is time-consuming and expensive to manufacture, since the production and assembly of a separate molding for receiving the valve is required and the piston for the assembly of the molding must be pretreated (twisting the piston to create a smaller cross-section in the region of the molding , additional hole to prevent rotation).

Der Erfindung liegt die Aufgabe zugrunde, einen Türschließer mit Überdruckventil zu schaffen, der einfach und kostengünstig herstellbar ist.The invention has for its object to provide a door closer with pressure relief valve, which is simple and inexpensive to produce.

Die Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.The object is solved by the features of patent claim 1.

Der Ventilkörper weist Rastzungen auf, welche mit der Kolbenbohrung verrastend zusammenwirken; dies führt zu einer gravierenden Vereinfachung der Montage und senkt die Herstellungskostensomit deutlich.The valve body has locking tongues, which cooperate latching with the piston bore; This leads to a serious simplification of the assembly and significantly reduces the manufacturing costs.

Das Ventil kann außerhalb des Kolbens komplett vormontiert werden: In den Ventilkörper kann nach Einlegen des Ventilkegels und einer Feder ein Ventileinsatz eingeschoben werden, wobei die Verbindung zwischen Ventileinsatz und Ventilkörper als Rastverbindung ausgebildet sein kann. Auch dies vereinfacht die Montage und führt zu einer weiteren Senkung der Herstellungskosten.The valve can be completely preassembled outside the piston: A valve insert can be inserted in the valve body after inserting the valve cone and a spring be inserted, wherein the connection between the valve core and the valve body may be formed as a latching connection. This also simplifies assembly and leads to a further reduction in manufacturing costs.

Das vormontierte Ventil wird schließlich auf äußerst einfache Weise, nämlich verrastend in die Kolbenbohrung eingeschoben.The pre-assembled valve is finally inserted in a very simple manner, namely latching into the piston bore.

Das Ventil kann außerdem modular aufgebaut sein: Es kann ein einziger, einheitlich ausgebildeter Ventilkörper zur Abdeckung aller Anwendungsfälle vorgesehen sein. In diesen Ventilkörper können verschiedenartige, dem jeweiligen Anwendungsfall angepasste Teile, insbesondere verschiedene Ventileinsätze und/oder verschiedene Federn und/oder verschiedene Ventilkegel, einsetzbar sein. Beispielsweise können die Federn je nach Ansprechdruck des Überdruckventil verschieden lang ausgebildet sein, wobei für jede Federlänge ein passender Ventileinsatz vorgesehen sein kann. Durch diesen modularen Aufbau des Ventils lassen sich die Herstellungskosten, insbesondere Werkzeug- und/oder Lagerhaltungskosten weiter senken.The valve can also be modular: It can be provided to cover all applications, a single, uniformly designed valve body. In this valve body, various, adapted to the particular application parts, in particular different valve inserts and / or different springs and / or different valve cone, can be used. For example, the springs may be designed to have different lengths depending on the response pressure of the pressure relief valve, wherein a suitable valve insert may be provided for each spring length. Due to this modular design of the valve, the manufacturing costs, in particular tool and / or storage costs can be further reduced.

In vorteilhaften Ausgestaltungen können verschiedene Bestandteile des Ventils, z.B. der Ventilkörper, der Ventileinsatz und/oder der Ventilkegel, kostengünstig aus Kunststoff (Spritzguss) gefertigt sein. Selbstverständlich kommen für Ventilkörper und Ventileinsatz auch andere elastische Materialien und für den Ventilkegel wiederum andere Materialien in Betracht.In advantageous embodiments, various components of the valve, e.g. the valve body, the valve core and / or the valve plug, inexpensively made of plastic (injection molding). Of course, come for valve body and valve insert and other elastic materials for the valve cone in turn other materials into consideration.

Der Einsatz eines derartigen kombinierten Ventils beschränkt sich nicht auf die vorangehend beschriebene Kombination von Überström- und Überdruckventil. Weitere denkbare Anwendungen eines identisch aufgebauten kombinierten Ventils bestehen beispielsweise in der Kombination eines Überströmventils mit einem Überdruckventil für die Absicherung des Überdrückens der Öffnungsdämpfung oder in der Kombination eines Überströmventils mit einem Schließ- oder Öffnungsdämpfungsventil.The use of such a combined valve is not limited to the above-described combination of overflow and pressure relief valve. Further conceivable applications of an identically constructed combined valve consist, for example, in the combination of an overflow valve with a pressure relief valve for ensuring the overpressing of the opening damping or in the combination of an overflow valve with a closing or opening damping valve.

Weitere vorteilhafte Ausgestaltungsmöglichkeiten der Erfindung sind in der nachfolgenden Beschreibung sowie in den Unteransprüchen beschrieben. Nachfolgend werden Ausführungsbeispiele anhand der Figuren näher erläutert. Dabei zeigen:

Figur 1
einen Längsschnitt eines Türschließers mit einem Kombinationsventil;
Figur 2
eine vergrößerte Darstellung des Kombinationsventils aus Figur 1;
Figur 3
ein abgewandeltes Ausführungsbeispiel eines Kombinationsventils;
Figur 4
eine Stirnansicht eines Kombinationsventils.
Further advantageous embodiments of the invention are described in the following description and in the dependent claims. following Embodiments will be explained in more detail with reference to FIGS. Showing:
FIG. 1
a longitudinal section of a door closer with a combination valve;
FIG. 2
an enlarged view of the combination valve FIG. 1 ;
FIG. 3
a modified embodiment of a combination valve;
FIG. 4
an end view of a combination valve.

Der in Figur 1 dargestellte Türschließer 1 weist ein Gehäuse 2 mit einem darin linear verschiebbar geführten Kolben 3 auf. Der Kolben 3 ist in seinem Innenraum mit einer Verzahnung 8 versehen, in welcher das Zahnrad 9 der im Gehäuse 2 des Türschließers 1 drehbar gelagerten Schließerwelle 10 kämmt. Eine als Schraubendruckfeder ausgebildete Schließerfeder 7 ist in der linken Gehäusekammer 6 angeordnet und beaufschlagt - sich am Gehäuse, z.B. am hier nicht dargestellten linken Gehäuseabschluss abstützend - den Kolben 3 in die dargestellte rechte Position. Diese Position entspricht der Geschlossenlage des Türflügels, der an die Schließerwelle 10 des Türschließers 1 über ein kraftübertragendes Gestänge, z.B. Scherenarm oder Gleitarm, oder direkt angeschlossen ist.The in FIG. 1 shown door closer 1 has a housing 2 with a linearly displaceably guided therein piston 3. The piston 3 is provided in its interior with a toothing 8, in which the gear 9 of the housing 2 of the door closer 1 rotatably mounted closer shaft 10 meshes. A closing spring designed as a helical compression spring 7 is arranged in the left housing chamber 6 and acted upon - on the housing, for example on the left housing closure not shown here - supporting the piston 3 in the illustrated right position. This position corresponds to the closed position of the door leaf, which is connected to the closer shaft 10 of the door closer 1 via a force-transmitting linkage, such as scissor arm or sliding arm, or directly.

Wird der Türflügel manuell geöffnet, bewegt sich der Kolben 3 - betätigt durch die Drehung der Schließerwelle 10 im Uhrzeigersinn - nach links, wobei die Schließerfeder 7 komprimiert wird. Das aus der linken Gehäusekammer 6 verdrängte Dämpfungsmedium fließt durch die linke Kolbenbohrung 13 in den Kolbeninnenraum 5 und weiter durch das im Bereich der rechten Stirnseite des Kolbens 3 in der rechten Kolbenbohrung 14 angeordnete Ventil 15, dessen Aufbau und Funktionsweise bei den nachfolgenden Figuren ausführlich beschrieben werden, in die rechte Gehäusekammer 4.If the door is opened manually, the piston 3 moves - actuated by the rotation of the closer shaft 10 in a clockwise direction - to the left, wherein the closing spring 7 is compressed. The damping medium displaced from the left-hand housing chamber 6 flows through the left-hand piston bore 13 into the piston interior 5 and further through the valve 15 arranged in the region of the right-hand end side of the piston 3 in the right-hand piston bore 14, the structure and mode of operation of which are described in detail in the following figures , in the right housing chamber. 4

Sobald der Türflügel losgelassen wird, drängt die komprimierte Schließerfeder den Kolben 3 nach rechts; die Schließerwelle 10 wird hierbei entgegen dem Uhrzeigersinn gedreht, so dass der angeschlossene Türflügel in seine Geschlossenlage überführt wird. Da das Ventil 15 bei dem nun in der rechten Gehäusekammer 4 vorhandenen Überdruck geschlossen ist, fließt das Dämpfungsmedium durch einen hier nicht dargestellten Überströmkanal, welcher ein ebenfalls nicht dargestelltes Ventil zur Gewährleistung der Schließdämpfung enthält, gedämpft in die linke Gehäusekammer 6 bzw. in den Kolbeninnenraum 5. Hierdurch wird sichergestellt, dass der Türflügel nicht abrupt schließt, sondern gedämpft in seine Geschlossenlage überführt wird. Wird der Türflügel während des gedämpften Schließvorgangs manuell überdrückt, d.h. wird der Türflügel schneller geschlossen, als es die Schließdämpfung eigentlich vorsieht, so wird das nun unter stärkerem Überdruck stehende Dämpfungsmedium aus der rechten Gehäusekammer 6 durch das Ventil 15 in den Kolbeninnenraum 5 abgeführt. Das Ventil 15 ist so ausgebildet, dass es erst bei einem relativ großen Überdruck in der rechten Gehäusekammer 6, welcher beim manuellen Überdrücken des Türflügels entsteht, öffnet, während es beim normalen gedämpften Schließvorgang des Türflügels geschlossen ist.As soon as the door leaf is released, the compressed closing spring urges the piston 3 to the right; the closer shaft 10 is in this case counterclockwise turned so that the connected door is moved to its closed position. Since the valve 15 is closed at the now existing in the right housing chamber 4 overpressure, the damping medium flows through a overflow channel, not shown here, which also contains a valve, not shown, to ensure the closing damping, damped in the left housing chamber 6 and in the piston interior 5. This ensures that the door does not close abruptly, but is transferred damped in its closed position. If the door leaf is manually overstruck during the damped closing operation, ie if the door leaf is closed faster than the closing damping actually envisages, then the damping medium now standing under greater overpressure is removed from the right-hand housing chamber 6 through the valve 15 into the piston interior 5. The valve 15 is designed so that it opens only at a relatively large pressure in the right housing chamber 6, which arises when manually overpressing the door leaf, while it is closed during the normal damped closing operation of the door leaf.

Figur 2 zeigt einen Ausschnitt des Kolbens 3 im Bereich seiner rechten Stirnseite. Im Kolben ist der Ventilkörper 18 eines als Kombinationsventil ausgebildeten Ventils 15 in einer stirnseitigen Kolbenbohrung 14 angeordnet. Innerhalb des Ventilkörpers 18 ist ein Ventileinsatz 25 angeordnet. Eine im Ventileinsatz 25 abgestützte, als Schraubendruckfeder ausgebildete Feder 27 beaufschlagt einen linear verschiebbaren Ventilkegel 24 gegen eine in der rechten Stirnseite des Ventilkörpers 18 vorhandene Bohrung 23. Der Ventileinsatz 25 weist außerdem an seiner linken Stirnseite eine Bohrung 28 zum Kolbeninnenraum 5 auf. FIG. 2 shows a section of the piston 3 in the region of its right front side. In the piston, the valve body 18 of a valve 15 designed as a combination valve is arranged in a frontal piston bore 14. Within the valve body 18, a valve insert 25 is arranged. A supported in the valve insert 25, designed as a helical compression spring spring 27 acts on a linearly displaceable poppet 24 against a present in the right end of the valve body 18 bore 23. The valve insert 25 also has on its left front side a bore 28 to the piston interior 5.

Der Ventilkörper 18 des Ventils 15 ist innerhalb der Kolbenbohrung 14 linear verschiebbar angeordnet. Die Abbildung zeigt den Ventilkörper 18 in seiner linken Endposition. Eine am Ventilkörper 18 flüssigkeitsdicht befestigte, als Ringdichtung ausgebildete Dichtung 19 liegt in dieser Endposition des Ventilkörpers 18 dicht an einer Senkung 16 der Kolbenbohrung 14 an. Der Ventilkörper 18 nimmt diese Position bei dem beim gedämpften Schließvorgang entstehenden Überdruck des Dämpfungsmediums in der rechten Gehäusekammer 4 ein. Das unter Überdruck stehende Dämpfungsmedium drängt durch die Bohrung 23 des Ventilkörpers 18 gegen den federbeaufschlagten Ventilkegel 24. Beim manuellen Überdrücken des Türflügels in Schließrichtung übersteigt der Überdruck des Dämpfungsmediums die Kraft der Feder 27; der Ventilkegel 24 weicht nach links zurück und gibt die Bohrung 23 zum Durchströmen des Dämpfungsmediums in Richtung der Bohrung 28 im Ventileinsatz 25 und somit zum Kolbeninnenraum 5 frei.The valve body 18 of the valve 15 is disposed linearly displaceable within the piston bore 14. The figure shows the valve body 18 in its left end position. A fluid-tight attached to the valve body 18, designed as a ring seal seal 19 is located in this end position of the valve body 18 close to a countersink 16 of the piston bore 14 at. The valve body 18 assumes this position in the overpressure of the damping medium in the right-hand housing chamber 4 which arises during the damped closing operation. That under pressure standing damping medium urged by the bore 23 of the valve body 18 against the spring-loaded valve cone 24. When manually overpressing the door leaf in the closing direction of the overpressure of the damping medium exceeds the force of the spring 27; the valve cone 24 deviates to the left and gives the bore 23 for flowing through the damping medium in the direction of the bore 28 in the valve insert 25 and thus to the piston interior 5 free.

Bei hoher Federkraft der Feder 27, d.h. bei einem hohen möglichen Überdruck in der rechten Gehäusekammer 4 bis zum Zurückweichen des Ventilkegels 24, kann die Dichtung 19 gegebenenfalls mehr oder weniger komprimiert werden. Um die Dichtung 19 vor übermäßiger Kompression und damit verbundener Beschädigung zu schützen, ist der Ventilkörper 18 so ausgebildet, dass er bei sehr hohem Überdruck in der rechten Gehäusekammer 4 gegen die Senkung 16 der Kolbenbohrung 14 stößt.At high spring force of the spring 27, i. at a high possible overpressure in the right housing chamber 4 until the valve cone 24 retracts, the seal 19 can optionally be compressed more or less. In order to protect the seal 19 from excessive compression and associated damage, the valve body 18 is formed so that it abuts against the countersink 16 of the piston bore 14 at very high pressure in the right housing chamber 4.

Um den Ventilkegel 24 und den korrespondierenden Durchströmquerschnitt vor Verunreinigung zu schützen, ist im Ventilkörper 18 eine Filterscheibe 22 angeordnet, welche die im durchströmendenden Dämpfungsmedium gegebenenfalls vorhandenen Fremdkörper aufnimmt.In order to protect the valve cone 24 and the corresponding flow cross-section from contamination, a filter disk 22 is arranged in the valve body 18, which receives the foreign body possibly present in the flow-through damping medium.

Nach rechts wird die Verschiebebewegung des Ventilkörpers 18 durch Rastzungen 20 begrenzt, welche in einen Rücksprung 17 der Kolbenbohrung 14 eingreifen. Der Ventilkörper 18 nimmt diese Position bei Überdruck im Kolbeninnenraum 5 ein. Dadurch, dass die Dichtung 19 bei dieser Position des Ventilkörpers 18 nicht mehr in Kontakt mit der Senkung 16 der Kolbenbohrung 14 steht, kann das Dämpfungsmedium vom Kolbeninnenraum 5 durch die in Figur 4 gezeigten Kanäle ungedämpft in die rechte Gehäusekammer 4 strömen. Der an den Türschließer 1 angeschlossene Türflügel kann somit ungedämpft gegen die Kraft der Schlie-ßerfeder geöffnet werden.To the right, the displacement movement of the valve body 18 is limited by locking tongues 20, which engage in a recess 17 of the piston bore 14. The valve body 18 assumes this position at positive pressure in the piston interior 5. The fact that the seal 19 is no longer in contact with the countersink 16 of the piston bore 14 in this position of the valve body 18, the damping medium from the piston interior 5 by the in FIG. 4 shown channels flow unattenuated in the right housing chamber 4. The door connected to the door closer 1 door can thus be opened undamped against the force of the closing ßerbfeder.

Das in Figur 3 dargestellte Ventil 15 funktioniert identisch wie in dem im vorangehenden Ausführungsbeispiel beschrieben. Abgewandelt gegenüber dem vorangehenden Ausführungsbeispiel ist die Befestigung des Ventileinsatzes 25 im Ventilkörper 18. Der Ventilkörper 18 weist Aussparungen 21 auf, in welche Rastnocken 26 des Ventileinsatzes 25 verrastend eingreifen.This in FIG. 3 illustrated valve 15 works identically as described in the previous embodiment. Modified over the previous embodiment, the attachment of the valve core 25 in the valve body 18. The valve body 18 has recesses 21, in which latching cams 26 of the valve insert 25 latchingly engage.

In Figur 4 ist ein Querschnitt durch den Ventilkörper 18 gezeigt. Der im Querschnitt eigentlich runde Ventilkörper 18 weist Abflachungen 29 auf, welche mit der Innenwandung der Kolbenbohrung 14 Kanäle mit einem Durchflussquerschnitt 30 bilden. Diese Kanäle werden vom aus dem Kolbeninnenraum 5 in die rechte Gehäusekammer 4 strömenden Dämpfungsmedium durchflossen.In FIG. 4 a cross section through the valve body 18 is shown. The valve body 18, which is actually round in cross section, has flattenings 29 which form channels with a flow cross section 30 with the inner wall of the piston bore 14. These channels are traversed by flowing from the piston interior 5 in the right housing chamber 4 damping medium.

Liste der ReferenzzeichenList of reference characters

11
Türschließerdoor closers
22
Gehäusecasing
33
Kolbenpiston
44
Gehäusekammerhousing chamber
55
KolbeninnenraumPiston interior
66
Gehäusekammerhousing chamber
77
Schließerfedercloser spring
88th
Verzahnunggearing
99
Zahnradgear
1010
Schließerwellecloser shaft
1313
Kolbenbohrungpiston bore
1414
Kolbenbohrungpiston bore
1515
VentilValve
1616
Senkungreduction
1717
Rücksprungreturn
1818
Ventilkörpervalve body
1919
Dichtungpoetry
2020
Rastzungecatch tongue
2121
Aussparungrecess
2222
Filterscheibefilter disc
2323
Bohrungdrilling
2424
Ventilkegelshuttle
2525
Ventileinsatzvalve core
2626
Rastnockelocking cam
2727
Federfeather
2828
Bohrungdrilling
2929
Abflachungflattening
3030
Querschnittcross-section

Claims (11)

  1. Door closer (1) for closing a door leaf,
    comprising a housing (2), a piston (3), which is guided in a linearly displaceable manner in the housing (2), and a hydraulic damping device,
    wherein the housing interior is filled with a damping medium, and
    wherein the housing interior is divided by the piston (3) in a liquid-tight manner into at least two housing chambers (4, 6), and
    wherein in the piston (3), for the through-flow by the damping medium when the door leaf is opened, there is disposed an overflow valve, and
    wherein in the piston (3) there is disposed an additional pressure-relief valve, which enters into operation in the event of an overpressure of the damping medium in a housing chamber (4), which overpressure is generated by manual over-forcing of the door leaf in the closing direction, in that the damping medium additionally drains out of the housing chamber (4) to the damping device via the pressure-relief valve, and
    wherein the pressure-relief valve and the overflow valve are disposed in combined arrangement in a valve body (18) of a valve (15) in a piston bore (14) of the piston (3), and
    wherein the valve body (18) is guided displaceably in the piston bore (14), and
    wherein the valve body (18) has a seal (19), and
    wherein the seal (19) of the valve body (18) interacts directly with the inner face of the piston bore (14), in that the seal (19) seals the valve body (18), in an end position of its range of displacement, in a liquid-tight manner with respect to the inner face of the piston bore (14),
    characterized in that
    the valve body (18) has latching tongues (20), which cooperate with the piston bore (14) in a latch-locking manner.
  2. Door closer according to Claim 1, characterized in that the piston bore (14) has a device for limiting the displacement motion of the valve body (18).
  3. Door closer according to Claim 2, characterized in that the piston bore (14) has a depression (16).
  4. Door closer according to Claim 2, characterized in that the piston bore (14) has a recess (17).
  5. Door closer according to Claim 1, characterized in that the valve body (18) has flattenings (29), which form with the inner wall of the piston (3) ducts having a cross section (30), which ducts allow the through-flow of the damping medium from a housing chamber configured as the piston interior (5) to another housing chamber (4).
  6. Door closer according to Claim 1, characterized in that in the valve body (18) there is disposed a valve insert (25), the valve insert (25) containing a spring (27) which is supported in the valve insert (25) and biases a valve cone (24) towards a bore (23) of the valve body (18), and the valve insert (25) having a bore (28) directed to the piston interior (5).
  7. Door closer according to Claim 6, characterized in that the valve insert (25) has a fastening device for the non-positive and liquid-tight fastening of the valve insert (25) in the valve body (18).
  8. Door closer according to Claim 7, characterized in that the valve insert (25) has latching cams (26), which cooperate with cavities (21) of the valve body (18).
  9. Door closer according to Claim 6, characterized in that the valve (3) is of modular construction, the different valve inserts (25) and/or different springs (27) and/or different valve cones (24) being able to be inserted in the unitary valve body (18).
  10. Door closer according to Claims 4 and 9, characterized in that the valve (3) can be installed by insertion of the valve body (18) into the piston bore (14) and by insertion of the valve insert (25) into the valve body (18), the connection between the valve body (18) and the piston bore (14), and between the valve insert (25) and the valve body (18), being respectively configured as a latching connection (16, 20, 21, 26).
  11. Door closer according to Claim 1, characterized in that the valve body (18) and the valve insert (25) are respectively formed from elastic material.
EP02020109A 2001-09-13 2002-09-07 Door closer Expired - Lifetime EP1293633B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10145200 2001-09-13
DE10145200.4A DE10145200B4 (en) 2001-09-13 2001-09-13 door closers

Publications (3)

Publication Number Publication Date
EP1293633A2 EP1293633A2 (en) 2003-03-19
EP1293633A3 EP1293633A3 (en) 2006-01-25
EP1293633B1 true EP1293633B1 (en) 2008-07-23

Family

ID=7698939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02020109A Expired - Lifetime EP1293633B1 (en) 2001-09-13 2002-09-07 Door closer

Country Status (6)

Country Link
EP (1) EP1293633B1 (en)
CN (1) CN1250857C (en)
AT (1) ATE402312T1 (en)
DE (2) DE10145200B4 (en)
ES (1) ES2305165T3 (en)
PT (1) PT1293633E (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI116915B (en) 2004-12-08 2006-03-31 Abloy Oy Directional control valve for door closer, has protruding flange for seating against door closer piston while simultaneously creating seal around mounting hole in piston
DE102005030756B4 (en) 2005-06-29 2010-04-08 Geze Gmbh Valve for driving a wing of a door or a window
DE102009022975A1 (en) 2009-05-28 2010-12-02 Dorma Gmbh + Co. Kg Valve of a hydraulic door operator
DE102011055317A1 (en) * 2011-11-14 2013-05-16 Dorma Gmbh + Co. Kg Piston for a door closing device
DE102013102336A1 (en) * 2013-03-08 2014-09-11 Dorma Gmbh + Co. Kommanditgesellschaft Pressure relief valve for a door closing device
JP6002070B2 (en) * 2013-03-26 2016-10-05 リョービ株式会社 Door closer
CN103306564B (en) * 2013-06-25 2016-03-02 苏州市富尔达科技股份有限公司 Door closer
GB2577542B (en) * 2018-09-28 2021-11-03 Assa Abloy Ltd Door-closer
EP4053368A1 (en) * 2021-03-01 2022-09-07 dormakaba Deutschland GmbH Door actuator and door unit
DE102022210953A1 (en) * 2022-10-17 2024-04-18 Geze Gmbh Pressure relief valve for a door drive

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2124632A1 (en) * 1971-05-18 1972-11-30 Ver Baubeschlag Gretsch Co Piston sealing ring - esp of polyamide open with overlapping joint
DE2405265A1 (en) * 1974-02-04 1975-08-14 Ver Baubeschlag Gretsch Co Suction valve for door closing mechanism - has housing with guide fingers for ball element
FI62401C (en) * 1976-12-13 1982-12-10 Waertsilae Oy Ab DOERRSTAENGARE
GB2158148B (en) * 1984-04-27 1988-03-02 Jebron Ltd Door closer
DE8526660U1 (en) * 1985-09-18 1987-01-22 Gretsch-Unitas Gmbh Baubeschlaege, 7257 Ditzingen, De
DE8801898U1 (en) * 1988-02-13 1988-03-24 Gretsch-Unitas Gmbh Baubeschlaege, 7257 Ditzingen, De
IT1241880B (en) * 1990-07-20 1994-02-01 Mab Masellis S P A DOOR CLOSER WITH INTERNAL, HYDROSTATIC DEVICE FOR LOCKING THE DOOR IN THE OPENING POSITION.
DE19808292A1 (en) * 1998-02-27 1999-09-02 Geze Gmbh & Co Device for opening or shutting door, window or similar item

Also Published As

Publication number Publication date
ES2305165T3 (en) 2008-11-01
DE10145200A1 (en) 2003-04-10
EP1293633A3 (en) 2006-01-25
CN1250857C (en) 2006-04-12
DE10145200B4 (en) 2015-09-10
ATE402312T1 (en) 2008-08-15
CN1407201A (en) 2003-04-02
DE50212527D1 (en) 2008-09-04
PT1293633E (en) 2008-09-15
EP1293633A2 (en) 2003-03-19

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