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EP2785942B1 - Door actuator - Google Patents

Door actuator Download PDF

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Publication number
EP2785942B1
EP2785942B1 EP12794182.1A EP12794182A EP2785942B1 EP 2785942 B1 EP2785942 B1 EP 2785942B1 EP 12794182 A EP12794182 A EP 12794182A EP 2785942 B1 EP2785942 B1 EP 2785942B1
Authority
EP
European Patent Office
Prior art keywords
piston
door
opening piston
opening
cylinder element
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
EP12794182.1A
Other languages
German (de)
French (fr)
Other versions
EP2785942A1 (en
Inventor
Thomas Salutzki
Alexander Hellwig
Jan Meulenbeld
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 EP2785942A1 publication Critical patent/EP2785942A1/en
Application granted granted Critical
Publication of EP2785942B1 publication Critical patent/EP2785942B1/en
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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
    • E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/12—Special devices controlling the circulation of the liquid, e.g. valve arrangement
    • 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
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • 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
    • E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10—Closers 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
    • E05F3/104—Closers 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 cam-and-slide transmission between driving shaft and piston within the closer housing
    • 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
    • E05F3/227—Additional arrangements for closers, e.g. for holding the wing in opened or other position mounted at the top of wings, e.g. details related to closer housings, covers, end caps or rails therefor
    • 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
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors

Definitions

  • the present invention relates to a door operator, in particular a door closer, for actuating a door.
  • Door operators are in particular door closers, power door closers and door operators to understand.
  • an energy storage is usually biased by manually pressing the door leaf. By unloading the energy storage, the door can be closed again without manual operation.
  • the door closers are attached either directly to the door leaf, to a door frame or to the wall.
  • a linkage is attached to the output shaft of the door closer.
  • the force is transmitted to the wall or on the frame.
  • the force is transmitted to the door leaf via the linkage.
  • the problem with prior art door closers is always the large opening moment, which is also needed for biasing the energy storage. In particular, when used by children, elderly or physically impaired persons too large an opening moment is usually a hindrance and does not allow barrier-free access.
  • a door operator for actuating a door, comprising a housing and an output shaft with a cam disk.
  • the cam can be made in one piece with the output shaft or be mounted rotationally fixed on the output shaft.
  • the door closer according to the invention comprises an opening piston guided in the housing, which bears against the cam disk on a first side, and an energy store acting on the opening piston for storing a closing energy for the door.
  • the door closer according to the invention comprises a guided in a cylindrical cavity of a cylinder element damping piston, which rests on a second side of the cam. This cylinder element is firmly connected to the opening piston.
  • the guidance of the opening piston in the housing means, in particular, that an outer surface of the opening piston rests against an inner surface of the housing, so that the opening piston in the housing is guided linearly movable.
  • an outer surface of the damping piston bears against an inner surface of the cylindrical cavity, so that the damping piston is guided linearly movably in the cylinder element.
  • the fixed connection between the cylinder element and the opening piston means in particular, that the cylinder element with respect to the opening piston has no degree of freedom.
  • the energy store comprises at least one closer spring.
  • the closing spring is designed in particular as a compression spring.
  • one end of the closing spring is supported directly or indirectly against the end of the opening piston facing away from the cam disk.
  • the other end of the closing spring is supported against the housing, in particular against a front cover of the housing.
  • a compression spring is arranged between a side of the damping piston facing away from the cam disk and the housing. A first end of the compression spring bears against the damping piston. The other end of the compression spring is supported in particular against another frontal cover in the housing.
  • the opening piston comprises a voltage applied to the cam disc first pressure roller.
  • the first pressure roller is rotatably mounted in the opening piston. The first pressure roller thus enables a low-friction power transmission between the opening piston and the cam disk.
  • the damping piston comprises a voltage applied to the cam disc second pressure roller.
  • the second pressure roller is rotatably mounted in the damping piston. The second pressure roller allows a low-friction force transmission between the damping piston and the cam disk.
  • first and / or the second pressure roller and corresponding friction surfaces on the opening piston and / or damping piston for power transmission to the cam can be formed.
  • an outer surface of the cylinder element is guided in the housing.
  • the outer surface of the cylinder element is cylindrical.
  • the cylinder member is supported inwardly against the damping piston.
  • the cylinder element is guided linearly movable in the housing and thus also supported relative to the housing. Since the cylinder member is fixedly connected to the opening piston, this double support of the cylinder member also stabilizes the opening piston and thus avoids tilting of the opening piston, whereby the efficiency of the door closer is improved.
  • the output shaft with the cam disk between the opening piston and the cylinder element is arranged. Since the opening piston is firmly connected to the cylinder element, and the cam disk is located between the two components, a support of the opening piston takes place on both sides of the cam disk.
  • the cylinder element and the opening piston are made together in one piece.
  • the opening piston and the cylinder element are connected to each other via a plurality of webs.
  • two or four webs are provided. Between these webs is the cam or extends the output shaft.
  • the cylinder member and all webs are made together from one piece.
  • the outer diameter of the cylinder element corresponds for example to the outer diameter of the opening piston.
  • a check valve is preferably located in the damping piston.
  • the check valve in particular comprises a sealing element, which is designed for example as a spring-loaded ball. Furthermore, this check valve in particular allows the discharge of an overpressure from a side facing away from the cam disk of the damping piston to the non-pressurized space between the opening piston and damping piston.
  • this check valve is provided in the opening piston.
  • this check valve preferably comprises a sealing element which is formed for example as a spring-loaded ball. This further check valve allows a pressure relief from the receiving space of the closing spring to Drucklosraum between the opening piston and damping piston.
  • a hydraulic damping chamber is formed in the housing.
  • FIG. 1 shows the door closer 1.
  • the door closer 1 comprises a substantially cylindrical housing 2.
  • the two front ends of the housing 2 are closed by means of a first lid 4 and a second lid 5.
  • Dietown Deckel 4 ist mit dem Genosuse 2sky.
  • From the housing 2 protrudes an output shaft 3 of the door closer 1.
  • a linkage is attached.
  • the force is then transferred to the door or on the wall or door frame.
  • the door closer 1 further includes a non-rotatably connected to the output shaft 3 cam disc 6.
  • On one side of this cam 6 is an opening piston 7.
  • the opening piston 7 is mounted linearly movable in the housing 2.
  • the lateral surface of the opening piston 7 is applied to the housing 2.
  • On the other side of the cam 6 is a cylinder element 8.
  • the cylinder element 8 is connected via four webs 9 fixed to the opening piston 7.
  • the opening piston 7, the cylinder element 8 and the webs 9 are made together in one piece.
  • the opening piston 7 comprises a first pressure roller 12 (see FIG. FIG. 3 ).
  • This first pressure roller 12 is rotatably mounted by means of a first pressure roller axis 11 in the opening piston 7.
  • By means of this first pressure roller 11 of the opening piston 7 is applied to the cam plate 6.
  • a damping piston 16 (s. FIG. 4 ) mounted linearly movable.
  • This damping piston 16 includes the in FIG. 2 to see second pressure roller 14. With this second pressure roller 14 of the damping piston 16 abuts against the cam 6.
  • the closing spring 10 On the side facing away from the cam 6 of the opening piston 7 is a closing spring 10 (energy storage).
  • the closing spring 10 is designed as a compression spring and is supported with one end against the opening piston 7 and with the other end against the housing 2, in particular against the second cover 5 from.
  • the cam disk 6 is rotationally fixedly connected to the output shaft 3 or manufactured in one piece with the output shaft 3.
  • the cam plate 6 is designed heart-shaped. By opening the door leaf, the output shaft 3 is set in rotation. As a result, the cam disk 6 rotates. The cam disk 6 presses the opening piston 7 in the in FIG. 2 shown position to the right. As a result, the closing spring 10 is compressed. When closing the door, the closing spring 10 relaxes and pushes the opening piston 7 to the left. As a result, the cam disk 6 is set in rotation. At the same time, the damping piston 16 with the second pressure roller 14 has a dampening effect on the rotational movement of the cam disk 6.
  • FIG. 3 shows the opening piston 7 and the cylinder element 8
  • FIG. 3 is formed in the cylinder member 8, a cylindrical cavity 15.
  • the outer surface of the cylinder element 8 is cylindrical.
  • the outer surface of the cylinder member 8 abuts the housing 2.
  • the cylinder element 8 is guided linearly movable relative to the housing 2.
  • FIG. 3 a first outer diameter 26 of the cylinder member 8 and a second outer diameter 27 of the opening piston 7.
  • the first outer diameter 26 is equal to the second outer diameter 27, so that the cylinder element 8 and the opening piston 7 can be guided in a cylindrical bore in the housing 2 with a constant diameter.
  • the opening piston 7 has an opening piston length 28.
  • the cylinder element 8 has a cylinder length 29.
  • the opening piston 7 is guided linearly movable over the entire opening piston length 28 in the housing 2.
  • the cylinder member 8 is guided linearly movable over the entire cylinder length 29 in the housing 2.
  • the distance 31 is formed.
  • the webs 9 extend and in this distance 31, the cam plate 6 is arranged.
  • the opening piston length 28 and the cylinder length 29 preferably comprise at least 50% of the distance 31, in particular at least 75% of the distance 31.
  • FIG. 4 shows the damping piston 16.
  • the damping piston 16 is divided into a guide portion 17 and a pressure roller portion 18.
  • the guide portion 17 has a damping piston length 30.
  • the guide portion 17 is configured with a cylindrical outer surface.
  • the damping piston 16 is guided linearly movable in particular over the entire damping piston length 30 in the cylindrical cavity 15 of the cylinder element 8.
  • the pressure roller portion 18 is formed as an extension on the guide portion 17.
  • the second pressure roller 14 is mounted rotatably in the damping piston 16 via a second pressure roller axis 13.
  • the damping piston 16 has a cavity. In this cavity there is a compression spring 19.
  • a first end of the compression spring 19 is supported in the interior of the damping piston 16 against the damping piston 16.
  • the other end of the compression spring 19 is supported against the housing 2, in particular against the first cover. 4
  • FIG. 5 shows a sectional view through the opening piston 7, the cylinder member 8 and the damping piston 16.
  • the damping piston 16 is inserted in the cylinder member 8.
  • FIG. 5 a first check valve 20 in the damping piston 16.
  • the first check valve 20 is secured via a first sleeve 21 and a first pin 22 in the damping piston 16.
  • the first check valve 20 allows a pressure relief of the cam disk 6 side facing away from the damping piston 16 to the unpressurized space between the damping piston 16 and the opening piston.
  • a second check valve 23 In the opening piston 7 is a second check valve 23.
  • the second check valve 23 is mounted via a second sleeve 24 and a second pin 25 in the opening piston 7.
  • the second check valve 23 allows a pressure relief of the cam disk 6 side facing away from the opening piston 7 to the unpressurized space between the opening piston 7 and the damping piston sixteenth
  • the opening piston 7 Due to the firm and rigid connection between the opening piston 7 and the cylinder element 8, the opening piston 7 is supported twice over the housing 2, namely directly via the opening piston 7 and indirectly via the cylinder element 8, wherein the damping piston 16 is supported inside the opening piston 7. As a result, tilting of the opening piston 7 is largely avoided and thus the efficiency of the door closer 1 is improved.

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

Description

Die vorliegende Erfindung betrifft einen Türbetätiger, insbesondere einen Türschließer, zum Betätigen einer Türe.The present invention relates to a door operator, in particular a door closer, for actuating a door.

Unter Türbetätigern sind insbesondere Türschließer, Servotürschließer und Türantriebe zu verstehen. Bei Türschließern wird üblicherweise durch manuelles Betätigen des Türflügels ein Energiespeicher vorgespannt. Durch Entladen des Energiespeichers kann die Türe ohne manuelle Betätigung wieder geschlossen werden. Die Türschließer werden entweder direkt am Türflügel, an einer Türzarge oder an der Wand befestigt. Bei einer Befestigung am Türflügel wird an der Abtriebswelle des Türschließers ein Gestänge befestigt. Über dieses Gestänge wird die Kraft auf die Wand bzw. auf die Zarge übertragen. Bei einer Montage des Türschließers an der Zarge oder an der Wand wird über das Gestänge die Kraft auf den Türflügel übertragen. Alternativ ist es auch möglich, die Abtriebswelle koaxial mit der Drehachse der Türe zu verbinden. Problematisch bei vorbekannten Türschließern ist stets das große Öffnungsmoment, das auch zum Vorspannen des Energiespeichers benötigt wird. Insbesondere bei Nutzung durch Kinder, ältere oder körperlich beeinträchtigte Personen ist ein zu großes Öffnungsmoment in der Regel hinderlich und ermöglicht keinen barrierefreien Zugang.Door operators are in particular door closers, power door closers and door operators to understand. In door closers, an energy storage is usually biased by manually pressing the door leaf. By unloading the energy storage, the door can be closed again without manual operation. The door closers are attached either directly to the door leaf, to a door frame or to the wall. When mounted on the door a linkage is attached to the output shaft of the door closer. About this linkage, the force is transmitted to the wall or on the frame. When mounting the door closer on the frame or on the wall, the force is transmitted to the door leaf via the linkage. Alternatively, it is also possible to connect the output shaft coaxially with the axis of rotation of the door. The problem with prior art door closers is always the large opening moment, which is also needed for biasing the energy storage. In particular, when used by children, elderly or physically impaired persons too large an opening moment is usually a hindrance and does not allow barrier-free access.

Ein Türbetätiger aus dem Stand der Technik ist beispielsweise durch die US 5,901,412 A bekannt. Dieses Dokument offenbart einen Türbetätiger mit einem Integralkolben, der einen Dämpfungskolbenbereich und einen Öffnungskolbenbereich aufweist. An dem Öffnungskolbenbereich ist der Integralkolben zweiteilig, wobei ein inneres Teil durch eine Bolzenverbindung fest mit einem äußeren Teil verbunden ist. Das äußere Teil ist einstückig mit dem Dämpfungskolbenbereich verbunden.A door operator from the prior art, for example, by the US 5,901,412 A known. This document discloses a door actuator with an integral piston having a damping piston portion and an opening piston portion. At the opening piston area, the integral piston is in two parts, an inner part being fixed by a bolt connection connected to an outer part. The outer part is integrally connected to the damping piston area.

Es ist Aufgabe vorliegender Erfindung, einen Türbetätiger bereitzustellen, der bei kostengünstiger Herstellung und Montage sowie bei möglichst hohem Schließmoment ein möglichst geringes Öffnungsmoment aufweist. Die Aufgabe wird gelöst durch die Merkmale des Anspruchs 1. Die Unteransprüche haben bevorzugte Weiterbildungen der Erfindung zum Gegenstand.It is an object of the present invention to provide a door operator, which has the lowest possible opening torque at low cost production and assembly and at the highest possible closing torque. The object is solved by the features of claim 1. The dependent claims have preferred developments of the invention the subject.

Somit wird die Aufgabe gelöst durch einen Türbetätiger, insbesondere Türschließer, zum Betätigen einer Tür, umfassend ein Gehäuse und eine Abtriebswelle mit einer Nockenscheibe. Die Nockenscheibe kann dabei einstückig mit der Abtriebswelle gefertigt werden oder aber auf der Abtriebswelle rotationsfest montiert sein. Des Weiteren umfasst der erfindungsgemäße Türschließer einen im Gehäuse geführten Öffnungskolben, der auf einer ersten Seite an der Nockenscheibe anliegt, und einen auf den Öffnungskolben wirkenden Energiespeicher zum Speichern einer Schließenergie für die Türe. Darüber hinaus umfasst der Türschließer erfindungsgemäß einen in einem zylindrischen Hohlraum eines Zylinderelements geführten Dämpfungskolben, der auf einer zweiten Seite an der Nockenscheibe anliegt. Dieses Zylinderelement ist fest mit dem Öffnungskolben verbunden. Die Führung des Öffnungskolbens im Gehäuse bedeutet insbesondere, dass eine Außenfläche des Öffnungskolbens an einer Innenfläche des Gehäuses anliegt, so dass der Öffnungskolben im Gehäuse linear beweglich geführt ist. Ebenso liegt insbesondere eine Außenfläche des Dämpfungskolbens an einer Innenfläche des zylindrischen Hohlraums an, so dass der Dämpfungskolben im Zylinderelement linear beweglich geführt ist. Die feste Verbindung zwischen Zylinderelement und Öffnungskolben bedeutet insbesondere, dass das Zylinderelement gegenüber dem Öffnungskolben keinen Freiheitsgrad besitzt.Thus, the object is achieved by a door operator, in particular door closer, for actuating a door, comprising a housing and an output shaft with a cam disk. The cam can be made in one piece with the output shaft or be mounted rotationally fixed on the output shaft. Furthermore, the door closer according to the invention comprises an opening piston guided in the housing, which bears against the cam disk on a first side, and an energy store acting on the opening piston for storing a closing energy for the door. In addition, the door closer according to the invention comprises a guided in a cylindrical cavity of a cylinder element damping piston, which rests on a second side of the cam. This cylinder element is firmly connected to the opening piston. The guidance of the opening piston in the housing means, in particular, that an outer surface of the opening piston rests against an inner surface of the housing, so that the opening piston in the housing is guided linearly movable. Likewise, in particular an outer surface of the damping piston bears against an inner surface of the cylindrical cavity, so that the damping piston is guided linearly movably in the cylinder element. The fixed connection between the cylinder element and the opening piston means in particular, that the cylinder element with respect to the opening piston has no degree of freedom.

Bei den vorbekannten Türbetätigern mit Nockenscheibe bestand oft das Problem, dass die beiden Kolben in ihrer Führung minimal verkippen. Dies hatte zur Folge, dass zur Bewegung der Kolben ein höherer Kraftaufwand nötig ist. Insbesondere beim Öffnen der Türe und somit beim Bewegen des Öffnungskolbens gegen die Schließerfeder macht sich diese minimale Verkippung des Kolbens in vorbekannten Anordnungen negativ bemerkbar. In der hier vorgestellten Erfindung stützt sich der Öffnungskolben mittels des zusätzlichen Zylinderelements im Gehäuse ab. Dadurch wird die minimale Verkippung des Öffnungskolbens verringert vorzugsweise aufgehoben und somit der Wirkungsgrad des Türbetätigers verbessert.In the previously known door actuators with cam disk, there was often the problem that the two pistons tilt slightly in their leadership. This had the consequence that a greater effort is required to move the pistons. In particular, when the door is opened and thus when the opening piston is moved against the closing spring, this minimal tilting of the piston in previously known arrangements has a negative effect. In the invention presented here, the opening piston is supported by means of the additional cylinder element in the housing. As a result, the minimum tilting of the opening piston is preferably reduced, and the efficiency of the door operator is thus improved.

In bevorzugter Ausführung ist vorgesehen, dass der Energiespeicher zumindest eine Schließerfeder umfasst. Die Schließerfeder ist insbesondere als Druckfeder ausgebildet. Beispielsweise stützt sich ein Ende der Schließerfeder direkt oder indirekt gegen das der Nockenscheibe abgewandte Ende des Öffnungskolbens. Das andere Ende der Schließerfeder stützt sich gegen das Gehäuse, insbesondere gegen einen stirnseitigen Deckel des Gehäuses.In a preferred embodiment, it is provided that the energy store comprises at least one closer spring. The closing spring is designed in particular as a compression spring. For example, one end of the closing spring is supported directly or indirectly against the end of the opening piston facing away from the cam disk. The other end of the closing spring is supported against the housing, in particular against a front cover of the housing.

Darüber hinaus ist bevorzugt vorgesehen, dass zwischen einer der Nockenscheibe abgewandten Seite des Dämpfungskolbens und dem Gehäuse eine Druckfeder angeordnet ist. Ein erstes Ende der Druckfeder stützt sich gegen den Dämpfungskolben. Das andere Ende der Druckfeder stützt sich insbesondere gegen einen weiteren stirnseitigen Deckel im Gehäuse.In addition, it is preferably provided that a compression spring is arranged between a side of the damping piston facing away from the cam disk and the housing. A first end of the compression spring bears against the damping piston. The other end of the compression spring is supported in particular against another frontal cover in the housing.

In bevorzugter Ausführung ist vorgesehen, dass der Öffnungskolben eine an der Nockenscheibe anliegende erste Druckrolle umfasst. Die erste Druckrolle ist in dem Öffnungskolben drehbeweglich gelagert. Die erste Druckrolle ermöglicht somit eine reibungsarme Kraftübertragung zwischen dem Öffnungskolben und der Nockenscheibe.In a preferred embodiment, it is provided that the opening piston comprises a voltage applied to the cam disc first pressure roller. The first pressure roller is rotatably mounted in the opening piston. The first pressure roller thus enables a low-friction power transmission between the opening piston and the cam disk.

Darüber hinaus umfasst bevorzugt der Dämpfungskolben eine an der Nockenscheibe anliegende zweite Druckrolle. Die zweite Druckrolle ist in dem Dämpfungskolben drehbeweglich gelagert. Die zweite Druckrolle ermöglicht eine reibungsarme Kraftübertragung zwischen dem Dämpfungskolben und der Nockenscheibe.In addition, preferably, the damping piston comprises a voltage applied to the cam disc second pressure roller. The second pressure roller is rotatably mounted in the damping piston. The second pressure roller allows a low-friction force transmission between the damping piston and the cam disk.

Anstelle der ersten und/oder der zweiten Druckrolle können auch entsprechende Reibflächen am Öffnungskolben und/oder Dämpfungskolben zur Kraftübertragung auf die Nockenscheibe ausgebildet werden.Instead of the first and / or the second pressure roller and corresponding friction surfaces on the opening piston and / or damping piston for power transmission to the cam can be formed.

In bevorzugter Ausführung ist vorgesehen, dass eine Außenfläche des Zylinderelements im Gehäuse geführt ist. Insbesondere ist die Außenfläche des Zylinderelements zylindrisch. Somit stützt sich das Zylinderelement nach innen gegenüber dem Dämpfungskolben ab. Nach außen hin ist das Zylinderelement im Gehäuse linear beweglich geführt und somit auch gegenüber dem Gehäuse abgestützt. Da das Zylinderelement fest mit dem Öffnungskolben verbunden ist, stabilisiert diese doppelte Abstützung des Zylinderelements auch den Öffnungskolben und vermeidet somit eine Verkippung des Öffnungskolbens, wodurch der Wirkungsgrad des Türschließers verbessert wird.In a preferred embodiment it is provided that an outer surface of the cylinder element is guided in the housing. In particular, the outer surface of the cylinder element is cylindrical. Thus, the cylinder member is supported inwardly against the damping piston. Outwardly, the cylinder element is guided linearly movable in the housing and thus also supported relative to the housing. Since the cylinder member is fixedly connected to the opening piston, this double support of the cylinder member also stabilizes the opening piston and thus avoids tilting of the opening piston, whereby the efficiency of the door closer is improved.

Darüber hinaus ist bevorzugt vorgesehen, dass die Abtriebswelle mit der Nockenscheibe zwischen dem Öffnungskolben und dem Zylinderelement angeordnet ist. Da der Öffnungskolben mit dem Zylinderelement fest verbunden ist, und die Nockenscheibe sich zwischen den beiden Bauteilen befindet, erfolgt eine Abstützung des Öffnungskolbens beidseitig der Nockenscheibe.In addition, it is preferably provided that the output shaft with the cam disk between the opening piston and the cylinder element is arranged. Since the opening piston is firmly connected to the cylinder element, and the cam disk is located between the two components, a support of the opening piston takes place on both sides of the cam disk.

Des Weiteren ist bevorzugt vorgesehen, dass das Zylinderelement und der Öffnungskolben zusammen einstückig gefertigt sind. Insbesondere ist dabei vorgesehen, dass der Öffnungskolben und das Zylinderelement über mehrere Stege miteinander verbunden sind. Insbesondere sind zwei oder vier Stege vorgesehen. Zwischen diesen Stegen befindet sich die Nockenscheibe bzw. erstreckt sich die Abtriebswelle. Bei der einstückigen Fertigung sind insbesondere der Öffnungskolben, das Zylinderelement und alle Stege zusammen aus einem Stück gefertigt. Alternativ ist es auch beispielsweise vorgesehen, den Öffnungskolben und das Zylinderelement separat zu fertigen und über Stege miteinander zu verbinden.Furthermore, it is preferably provided that the cylinder element and the opening piston are made together in one piece. In particular, it is provided that the opening piston and the cylinder element are connected to each other via a plurality of webs. In particular, two or four webs are provided. Between these webs is the cam or extends the output shaft. In the one-piece production in particular of the opening piston, the cylinder member and all webs are made together from one piece. Alternatively, it is also provided, for example, to manufacture the opening piston and the cylinder element separately and to connect them via webs.

Der Außendurchmesser des Zylinderelements entspricht beispielsweise dem Außendurchmesser des Öffnungskolbens. Dadurch können das Zylinderelement und der Öffnungskolben in einer zylindrischen Bohrung im Gehäuse mit konstantem Durchmesser geführt werden.The outer diameter of the cylinder element corresponds for example to the outer diameter of the opening piston. Thereby, the cylinder member and the opening piston can be guided in a cylindrical bore in the housing with a constant diameter.

Des Weiteren befindet sich bevorzugt im Dämpfungskolben ein Rückschlagventil. Das Rückschlagventil umfasst insbesondere ein Dichtelement, welches beispielsweise als federbelastete Kugel ausgebildet ist. Des Weiteren ermöglicht dieses Rückschlagventil insbesondere das Ablassen eines Überdrucks von einer der Nockenscheibe abgewandten Seite des Dämpfungskolbens zu dem drucklosen Raum zwischen Öffnungskolben und Dämpfungskolben.Furthermore, a check valve is preferably located in the damping piston. The check valve in particular comprises a sealing element, which is designed for example as a spring-loaded ball. Furthermore, this check valve in particular allows the discharge of an overpressure from a side facing away from the cam disk of the damping piston to the non-pressurized space between the opening piston and damping piston.

Beispielsweise ist im Öffnungskolben ein weiteres Rückschlagventil vorgesehen. Auch dieses Rückschlagventil umfasst bevorzugt ein Dichtelement welches beispielsweise als federbelastete Kugel ausgebildet ist. Dieses weitere Rückschlagventil ermöglicht eine Druckentlastung vom Aufnahmeraum der Schließerfeder zum Drucklosraum zwischen Öffnungskolben und Dämpfungskolben.For example, another check valve is provided in the opening piston. Also, this check valve preferably comprises a sealing element which is formed for example as a spring-loaded ball. This further check valve allows a pressure relief from the receiving space of the closing spring to Drucklosraum between the opening piston and damping piston.

Auf der der Nockenscheibe abgewandten Seite des Dämpfungskolbens ist beispielsweise ein hydraulischer Dämpfungsraum im Gehäuse ausgebildet.On the side facing away from the cam disk of the damping piston, for example, a hydraulic damping chamber is formed in the housing.

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

Figur 1
einen erfindungsgemäßen Türbetätiger gemäß einem Ausführungsbeispiel,
Figur 2
den erfindungsgemäßen Türbetätiger gemäß dem Ausführungsbeispiel ohne Gehäuse,
Figur 3
einen Öffnungskolben mit Zylinderelement des erfindungsgemäßen Türbetätigers gemäß dem Ausführungsbeispiel,
Figur 4
einen Dämpfungskolben des erfindungsgemäßen Türbetätigers gemäß dem Ausführungsbeispiel, und
Figur 5
eine Schnittansicht durch Öffnungskolben und Dämpfungskolben des erfindungsgemäßen Türbetätigers gemäß dem Ausführungsbeispiel.
The invention will now be described with reference to an embodiment. Showing:
FIG. 1
a door operator according to the invention according to an embodiment,
FIG. 2
the door operator according to the invention according to the embodiment without housing,
FIG. 3
an opening piston with cylinder element of the door actuator according to the invention according to the embodiment,
FIG. 4
a damping piston of the door operator according to the invention according to the embodiment, and
FIG. 5
a sectional view through opening piston and damping piston of the door actuator according to the invention according to the embodiment.

Im Folgenden wird ein Türbetätiger, ausgebildet als Türschließer 1, anhand der Figuren 1 bis 5 im Detail erläutert.Hereinafter, a door operator, designed as a door closer 1, based on the FIGS. 1 to 5 explained in detail.

Figur 1 zeigt den Türschließer 1. Der Türschließer 1 umfasst ein im Wesentlichen zylinderförmiges Gehäuse 2. Die beiden stirnseitigen Enden des Gehäuses 2 sind mittels eines ersten Deckels 4 und eines zweiten Deckels 5 verschlossen. Aus dem Gehäuse 2 ragt eine Abtriebswelle 3 des Türschließers 1. An diese Abtriebswelle 3 wird beispielsweise ein Gestänge befestigt. Über dieses Gestänge wird dann die Kraft auf den Türflügel bzw. auf die Wand oder Türzarge übertragen. FIG. 1 shows the door closer 1. The door closer 1 comprises a substantially cylindrical housing 2. The two front ends of the housing 2 are closed by means of a first lid 4 and a second lid 5. Die erste Deckel 4 ist mit dem Gehäuse 2 verbunden. From the housing 2 protrudes an output shaft 3 of the door closer 1. At this output shaft 3, for example, a linkage is attached. About this linkage, the force is then transferred to the door or on the wall or door frame.

In Figur 2 ist das Gehäuse 2 des Türschließers 1 ausgeblendet. Wie in Figur 2 zu sehen ist, umfasst der Türschließer 1 des Weiteren eine drehfest mit der Abtriebswelle 3 verbundene Nockenscheibe 6. Auf einer Seite dieser Nockenscheibe 6 befindet sich ein Öffnungskolben 7. Der Öffnungskolben 7 ist in dem Gehäuse 2 linear beweglich gelagert. Hierzu liegt die Mantelfläche des Öffnungskolbens 7 am Gehäuse 2 an. Auf der anderen Seite der Nockenscheibe 6 befindet sich ein Zylinderelement 8. Das Zylinderelement 8 ist über vier Stege 9 fest mit dem Öffnungskolben 7 verbunden. Insbesondere sind der Öffnungskolben 7, das Zylinderelement 8 und die Stege 9 zusammen einstückig gefertigt.In FIG. 2 the housing 2 of the door closer 1 is hidden. As in FIG. 2 can be seen, the door closer 1 further includes a non-rotatably connected to the output shaft 3 cam disc 6. On one side of this cam 6 is an opening piston 7. The opening piston 7 is mounted linearly movable in the housing 2. For this purpose, the lateral surface of the opening piston 7 is applied to the housing 2. On the other side of the cam 6 is a cylinder element 8. The cylinder element 8 is connected via four webs 9 fixed to the opening piston 7. In particular, the opening piston 7, the cylinder element 8 and the webs 9 are made together in one piece.

Der Öffnungskolben 7 umfasst eine erste Druckrolle 12 (s. Figur 3). Diese erste Druckrolle 12 ist mittels einer ersten Druckrollenachse 11 im Öffnungskolben 7 drehbeweglich gelagert. Mittels dieser ersten Druckrolle 11 liegt der Öffnungskolben 7 an der Nockenscheibe 6 an. In dem Zylinderelement 8 ist ein Dämpfungskolben 16 (s. Figur 4) linear beweglich gelagert. Dieser Dämpfungskolben 16 umfasst die in Figur 2 zu sehende zweite Druckrolle 14. Mit dieser zweiten Druckrolle 14 liegt der Dämpfungskolben 16 an der Nockenscheibe 6 an.The opening piston 7 comprises a first pressure roller 12 (see FIG. FIG. 3 ). This first pressure roller 12 is rotatably mounted by means of a first pressure roller axis 11 in the opening piston 7. By means of this first pressure roller 11 of the opening piston 7 is applied to the cam plate 6. In the cylinder member 8 is a damping piston 16 (s. FIG. 4 ) mounted linearly movable. This damping piston 16 includes the in FIG. 2 to see second pressure roller 14. With this second pressure roller 14 of the damping piston 16 abuts against the cam 6.

Auf der der Nockenscheibe 6 abgewandten Seite des Öffnungskolbens 7 befindet sich eine Schließerfeder 10 (Energiespeicher). Die Schließerfeder 10 ist als Druckfeder ausgebildet und stützt sich mit einem Ende gegen den Öffnungskolben 7 und mit dem anderen Ende gegen das Gehäuse 2, insbesondere gegen den zweiten Deckel 5, ab.On the side facing away from the cam 6 of the opening piston 7 is a closing spring 10 (energy storage). The closing spring 10 is designed as a compression spring and is supported with one end against the opening piston 7 and with the other end against the housing 2, in particular against the second cover 5 from.

Die Nockenscheibe 6 ist rotationsfest mit der Abtriebswelle 3 verbunden oder einstückig mit der Abtriebswelle 3 gefertigt. Die Nockenscheibe 6 ist herzförmig ausgestaltet. Durch ein Öffnen des Türflügels wird die Abtriebswelle 3 in Rotation versetzt. Dadurch rotiert auch die Nockenscheibe 6. Die Nockenscheibe 6 drückt dabei den Öffnungskolben 7 in der in Figur 2 dargestellten Lage nach rechts. Dadurch wird die Schließerfeder 10 komprimiert. Beim Schließvorgang der Tür entspannt sich die Schließerfeder 10 und drückt den Öffnungskolben 7 nach links. Dadurch wird die Nockenscheibe 6 in Rotation versetzt. Gleichzeitig wirkt der Dämpfungskolben 16 mit der zweiten Druckrolle 14 dämpfend auf die rotatorische Bewegung der Nockenscheibe 6.The cam disk 6 is rotationally fixedly connected to the output shaft 3 or manufactured in one piece with the output shaft 3. The cam plate 6 is designed heart-shaped. By opening the door leaf, the output shaft 3 is set in rotation. As a result, the cam disk 6 rotates. The cam disk 6 presses the opening piston 7 in the in FIG. 2 shown position to the right. As a result, the closing spring 10 is compressed. When closing the door, the closing spring 10 relaxes and pushes the opening piston 7 to the left. As a result, the cam disk 6 is set in rotation. At the same time, the damping piston 16 with the second pressure roller 14 has a dampening effect on the rotational movement of the cam disk 6.

Figur 3 zeigt den Öffnungskolben 7 und das Zylinderelement 8. Gemäß Figur 3 ist in dem Zylinderelement 8 ein zylindrischer Hohlraum 15 ausgebildet. In diesen zylindrischen Hohlraum 15 ist der Dämpfungskolben 16 (s. Figur 4) linear beweglich geführt. Des Weiteren ist auch die Außenfläche des Zylinderelements 8 zylindrisch ausgebildet. Die Außenfläche des Zylinderelements 8 liegt am Gehäuse 2 an. Dadurch ist auch das Zylinderelement 8 gegenüber dem Gehäuse 2 linear beweglich geführt. FIG. 3 shows the opening piston 7 and the cylinder element 8 FIG. 3 is formed in the cylinder member 8, a cylindrical cavity 15. In this cylindrical cavity 15 of the damping piston 16 (s. FIG. 4 ) guided linearly movable. Furthermore, the outer surface of the cylinder element 8 is cylindrical. The outer surface of the cylinder member 8 abuts the housing 2. As a result, the cylinder element 8 is guided linearly movable relative to the housing 2.

Ferner zeigt Figur 3 einen ersten Außendurchmesser 26 des Zylinderelements 8 und einen zweiten Außendurchmesser 27 des Öffnungskolbens 7. In bevorzugter Ausführung ist der erste Außendurchmesser 26 gleich dem zweiten Außendurchmesser 27, so dass das Zylinderelement 8 und der Öffnungskolben 7 in einer zylindrischen Bohrung im Gehäuse 2 mit konstantem Durchmesser geführt werden können. Ferner weist der Öffnungskolben 7 eine Öffnungskolbenlänge 28 auf. Das Zylinderelement 8 weist eine Zylinderlänge 29 auf. Der Öffnungskolben 7 ist über die gesamte Öffnungskolbenlänge 28 im Gehäuse 2 linear beweglich geführt. Das Zylinderelement 8 ist über die gesamte Zylinderlänge 29 im Gehäuse 2 linear beweglich geführt. Zwischen dem Öffnungskolben 7 und dem Zylinderelement 8 ist der Abstand 31 ausgebildet. Über diesen Abstand 31 erstrecken sich die Stege 9 und in diesem Abstand 31 ist die Nockenscheibe 6 angeordnet. Bevorzugt umfasst die Öffnungskolbenlänge 28 und die Zylinderlänge 29 zumindest 50% des Abstandes 31, insbesondere zumindest 75% des Abstandes 31.Further shows FIG. 3 a first outer diameter 26 of the cylinder member 8 and a second outer diameter 27 of the opening piston 7. In a preferred embodiment, the first outer diameter 26 is equal to the second outer diameter 27, so that the cylinder element 8 and the opening piston 7 can be guided in a cylindrical bore in the housing 2 with a constant diameter. Furthermore, the opening piston 7 has an opening piston length 28. The cylinder element 8 has a cylinder length 29. The opening piston 7 is guided linearly movable over the entire opening piston length 28 in the housing 2. The cylinder member 8 is guided linearly movable over the entire cylinder length 29 in the housing 2. Between the opening piston 7 and the cylinder element 8, the distance 31 is formed. About this distance 31, the webs 9 extend and in this distance 31, the cam plate 6 is arranged. The opening piston length 28 and the cylinder length 29 preferably comprise at least 50% of the distance 31, in particular at least 75% of the distance 31.

Figur 4 zeigt den Dämpfungskolben 16. Der Dämpfungskolben 16 unterteilt sich in einen Führungsanteil 17 und einen Druckrollenanteil 18. Der Führungsanteil 17 weist eine Dämpfungskolbenlänge 30 auf. Des Weiteren ist der Führungsanteil 17 mit einer zylinderförmigen Außenfläche ausgestaltet. Der Dämpfungskolben 16 ist insbesondere über die ganze Dämpfungskolbenlänge 30 im zylindrischen Hohlraum 15 des Zylinderelements 8 linear beweglich geführt. Der Druckrollenanteil 18 ist als Fortsatz am Führungsanteil 17 ausgebildet. In diesem Druckrollenanteil 18 ist die zweite Druckrolle 14 über eine zweite Druckrollenachse 13 drehbeweglich im Dämpfungskolben 16 gelagert. Des Weiteren weist der Dämpfungskolben 16 einen Hohlraum auf. In diesem Hohlraum befindet sich eine Druckfeder 19. Ein erstes Ende der Druckfeder 19 stützt sich im Inneren des Dämpfungskolbens 16 gegen den Dämpfungskolben 16. Das andere Ende der Druckfeder 19 stützt sich gegen das Gehäuse 2, insbesondere gegen den ersten Deckel 4. FIG. 4 shows the damping piston 16. The damping piston 16 is divided into a guide portion 17 and a pressure roller portion 18. The guide portion 17 has a damping piston length 30. Furthermore, the guide portion 17 is configured with a cylindrical outer surface. The damping piston 16 is guided linearly movable in particular over the entire damping piston length 30 in the cylindrical cavity 15 of the cylinder element 8. The pressure roller portion 18 is formed as an extension on the guide portion 17. In this pressure roller portion 18, the second pressure roller 14 is mounted rotatably in the damping piston 16 via a second pressure roller axis 13. Furthermore, the damping piston 16 has a cavity. In this cavity there is a compression spring 19. A first end of the compression spring 19 is supported in the interior of the damping piston 16 against the damping piston 16. The other end of the compression spring 19 is supported against the housing 2, in particular against the first cover. 4

Figur 5 zeigt eine Schnittansicht durch den Öffnungskolben 7, das Zylinderelement 8 und den Dämpfungskolben 16. In dieser Darstellung ist der Dämpfungskolben 16 im Zylinderelement 8 eingesetzt. FIG. 5 shows a sectional view through the opening piston 7, the cylinder member 8 and the damping piston 16. In this illustration, the damping piston 16 is inserted in the cylinder member 8.

Des Weiteren zeigt Figur 5 ein erstes Rückschlagventil 20 im Dämpfungskolben 16. Das erste Rückschlagventil 20 ist über eine erste Buchse 21 und einen ersten Stift 22 im Dämpfungskolben 16 befestigt. Das erste Rückschlagventil 20 ermöglicht eine Druckentlastung von der der Nockenscheibe 6 abgewandten Seite des Dämpfungskolbens 16 zum drucklosen Raum zwischen Dämpfungskolben 16 und Öffnungskolben 7.Further shows FIG. 5 a first check valve 20 in the damping piston 16. The first check valve 20 is secured via a first sleeve 21 and a first pin 22 in the damping piston 16. The first check valve 20 allows a pressure relief of the cam disk 6 side facing away from the damping piston 16 to the unpressurized space between the damping piston 16 and the opening piston. 7

Im Öffnungskolben 7 befindet sich ein zweites Rückschlagventil 23. Das zweite Rückschlagventil 23 ist über eine zweite Buchse 24 und einen zweiten Stift 25 im Öffnungskolben 7 montiert. Das zweite Rückschlagventil 23 ermöglicht eine Druckentlastung von der der Nockenscheibe 6 abgewandten Seite des Öffnungskolbens 7 zum drucklosen Raum zwischen Öffnungskolben 7 und Dämpfungskolben 16.In the opening piston 7 is a second check valve 23. The second check valve 23 is mounted via a second sleeve 24 and a second pin 25 in the opening piston 7. The second check valve 23 allows a pressure relief of the cam disk 6 side facing away from the opening piston 7 to the unpressurized space between the opening piston 7 and the damping piston sixteenth

Durch die feste und steife Verbindung zwischen Öffnungskolben 7 und Zylinderelement 8 stützt sich der Öffnungskolben 7 zwei Mal gegenüber dem Gehäuse 2, nämlich direkt über den Öffnungskolben 7 und indirekt über das Zylinderelement 8 ab, wobei sich der Dämpfungskolben 16 innerhalb des Öffnungskolbens 7 abstützt. Dadurch wird ein Verkippen des Öffnungskolbens 7 weitgehend vermieden und somit der Wirkungsgrad des Türschließers 1 verbessert.Due to the firm and rigid connection between the opening piston 7 and the cylinder element 8, the opening piston 7 is supported twice over the housing 2, namely directly via the opening piston 7 and indirectly via the cylinder element 8, wherein the damping piston 16 is supported inside the opening piston 7. As a result, tilting of the opening piston 7 is largely avoided and thus the efficiency of the door closer 1 is improved.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Türschließerdoor closers
22
Gehäusecasing
33
Abtriebswelleoutput shaft
44
erster Deckelfirst lid
55
zweiter Deckelsecond lid
66
Nockenscheibecam
77
Öffnungskolbenopening piston
88th
Zylinderelementcylindrical member
99
StegeStege
1010
Schließerfeder (Energiespeicher)Closing spring (energy storage)
1111
erste Druckrollenachsefirst pressure roller axis
1212
erste Druckrollefirst pressure roller
1313
zweite Druckrollenachsesecond pressure roller axis
1414
zweite Druckrollesecond pressure roller
1515
zylindrischer Hohlraumcylindrical cavity
1616
Dämpfungskolbendamping piston
1717
Führungsanteilmanagement share
1818
DruckrollenanteilPressure roller share
1919
Druckfedercompression spring
2020
erstes Rückschlagventilfirst check valve
2121
erste Buchsefirst socket
2222
erster Stiftfirst pen
2323
zweites Rückschlagventilsecond check valve
2424
zweite Buchsesecond socket
2525
zweiter Stiftsecond pen
2626
erster Außendurchmesserfirst outer diameter
2727
zweiter Außendurchmessersecond outer diameter
2828
ÖffnungskolbenlängeOpening piston length
2929
Zylinderlängecylinder length
3030
DämpfungskolbenlängeDamping piston length
3131
Abstanddistance

Claims (10)

  1. A door actuator (1) for actuating a door, comprising:
    • a housing (2),
    • an output shaft (39 with a cam disc (6),
    • an opening piston (7), which is guided in the housing (2) and abutting against the cam disc (6) on one first side,
    • an energy accumulator (10) acting upon the opening piston (7) for accumulating closing energy for the door, and
    • a cylinder element (8),
    • a dampening piston (16), which is guided in a cylindrical hollow compartment (15) of the cylinder element (8) and abuts against the cam disc (6) on a second side,
    • wherein the cylinder element (8) is firmly connected to the opening piston (7).
  2. The door actuator according to claim 1, characterized in that the energy accumulator (10) comprises at least one closer spring.
  3. The door actuator according to any of the preceding claims, characterized by a pressure spring (19) between a side of the dampening piston (16) facing away from the cam disc (6) and the housing (2).
  4. The door actuator according to any of the preceding claims, characterized in that the opening piston (7) comprises a first pressure roller (12) abutting against the cam disc (6).
  5. The door actuator according to any of the preceding claims, characterized in that the dampening piston (16) comprises a second pressure roller (14) abutting against the cam disc (6).
  6. The door actuator according to any of the preceding claims, characterized in that an exterior surface of the cylinder element (8) is guided in the housing (2).
  7. The door actuator according to any of the preceding claims, characterized in that the output shaft (3) with the cam disc (6) is disposed between the opening piston (7) and the cylinder element (8).
  8. The door actuator according to any of the preceding claims, characterized in that the cylinder element (8) and the opening piston (7) are manufactured together in one piece.
  9. The door actuator according to any of the preceding claims, characterized by several, in particular two or four, bridges (9) between the opening piston (7) and the cylinder element (8) for connecting the opening piston (7) to the cylinder element (8).
  10. The door actuator according to any of the preceding claims, characterized by a non-return valve (20) in the dampening piston (16).
EP12794182.1A 2011-12-02 2012-11-14 Door actuator Active EP2785942B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011055974A DE102011055974A1 (en) 2011-12-02 2011-12-02 door actuators
PCT/EP2012/004723 WO2013079162A1 (en) 2011-12-02 2012-11-14 Door actuator

Publications (2)

Publication Number Publication Date
EP2785942A1 EP2785942A1 (en) 2014-10-08
EP2785942B1 true EP2785942B1 (en) 2019-10-23

Family

ID=47263226

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12794182.1A Active EP2785942B1 (en) 2011-12-02 2012-11-14 Door actuator

Country Status (6)

Country Link
US (1) US9181744B2 (en)
EP (1) EP2785942B1 (en)
CN (1) CN103975115B (en)
DE (1) DE102011055974A1 (en)
TW (1) TW201323700A (en)
WO (1) WO2013079162A1 (en)

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Also Published As

Publication number Publication date
US20140366319A1 (en) 2014-12-18
CN103975115B (en) 2016-08-10
WO2013079162A1 (en) 2013-06-06
EP2785942A1 (en) 2014-10-08
TW201323700A (en) 2013-06-16
CN103975115A (en) 2014-08-06
US9181744B2 (en) 2015-11-10
DE102011055974A1 (en) 2013-06-06

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