EP0972902B1 - Door closer with reduced dimensions - Google Patents

Door closer with reduced dimensions Download PDF

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Publication number
EP0972902B1
EP0972902B1 EP99105904A EP99105904A EP0972902B1 EP 0972902 B1 EP0972902 B1 EP 0972902B1 EP 99105904 A EP99105904 A EP 99105904A EP 99105904 A EP99105904 A EP 99105904A EP 0972902 B1 EP0972902 B1 EP 0972902B1
Authority
EP
European Patent Office
Prior art keywords
closer
door
shaft
damping device
door closer
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
EP99105904A
Other languages
German (de)
French (fr)
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EP0972902A1 (en
Inventor
Ernst Schulte
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Individual
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Individual
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Publication date
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Publication of EP0972902A1 publication Critical patent/EP0972902A1/en
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Publication of EP0972902B1 publication Critical patent/EP0972902B1/en
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Expired - Lifetime legal-status Critical Current

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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
    • E05F3/10—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
    • E05F3/106—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 crank-arm 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
    • E05F3/04—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
    • 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
    • E05Y2201/60—Suspension or transmission members; Accessories therefor
    • E05Y2201/622—Suspension or transmission members elements
    • E05Y2201/644—Flexible elongated pulling elements
    • E05Y2201/656—Chains
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S16/00—Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
    • Y10S16/09—Hydraulic actuated checks, closers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S16/00—Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
    • Y10S16/17—Checks and closers, holding means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S16/00—Miscellaneous hardware, e.g. bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance
    • Y10S16/21—Checks, closers, check valve construction

Definitions

  • the present invention relates to a door closer the features of the preamble of claim 1.
  • Such door closers are known, for example from DE 9319541 U1, which goes back to the applicant.
  • a door closer which a closer spring and a hydraulic damping element in the form of a damping piston.
  • the closer spring acts directly on the damping piston and works together with them in a common Casing.
  • the closer shaft carries a pinion that with an internal toothing meshes in the damping piston.
  • the thickness of the door closer is in Radial direction of the closer shaft is relatively large because of the Damping piston surrounds the closer shaft.
  • the closer spring in part of the Damping device arranged and stands with the Hydraulic fluid in contact. In the event of an error or leak Damping device must therefore also the Part of the door closer assigned to the closer spring be opened. The resulting high Repair effort generally leads to the Door closers must be replaced completely.
  • a door closer is known from DE 196 20 382 A1, an energy storage device in the form of a closer spring has, which is spaced from the Closer shaft is arranged. A damping device is not intended for this door closer.
  • DE 19548202 A1 shows a friction damper for such door closer, which is separately in a Guide rail of the closer linkage can be provided got to.
  • Such friction dampers do not achieve that desired closing sequence with hydraulic Attenuators can be achieved.
  • US-A-2 834 039 is a door closer with a Energy storage known that contains a closer spring with a driven by the closer spring Closer shaft and with a hydraulic in one separate housing provided fluid-damped Damping device, the energy storage and the Damping device together on the closer shaft act and the closer spring and the closer shaft not in contact with the fluid of the damping device stand.
  • a corresponding door closer is also off EP-A-0 029 190.
  • damping device with its separate Housing section rotatable about the direction of action there are special advantages.
  • the damping device with its adjustment valves be oriented in such a way that they are accessible from an Side of the door frame or door leaf adjustable are.
  • the one surrounding the damping device can Housing section towards the closer shaft wear an outward-facing, ring-shaped collar, in an annular groove open to the rod engages and forms a pivot bearing with this.
  • the closer spring is a Coil spring is surrounded on the outside by a sleeve is, the end facing the closer shaft Sleeve forms an inward facing collar, which as Abutment for the closer spring is formed. Further can the closer spring over a on the End of the sleeve acting away from the closer shaft Adjustment device adjustable in its preload his. This results in a simple and reliable Adjustment. Because the closer spring and the closer shaft are not included are in contact with the fluid of the damping device, they will not work with the in the Damping device occurring dynamic pressure applied. The closer spring and the closer shaft can therefore in relatively simple, especially not fluid-tight housings may be arranged beyond that can be made relatively thin-walled. From this results on the one hand an advantage in material and Processing costs during manufacturing. On the other hand reduces the thin wall thickness of the housing in the area of the energy storage, the overall dimensions and that Weight of the door closer.
  • the housing sections in Design and wall thickness to meet individual requirements of the modules can be adjusted.
  • a common structural Unity however, they can be like a conventional one Door closer mounted together on the door or frame become.
  • the closer spring can be pulled, especially via a chain on the closer shaft Act. This results in a simple, inexpensive and reliable power transmission.
  • the Damping device in the radial direction next to the Closer shaft is arranged or if the Damping device in the axial direction of the closer shaft is arranged. It can also be advantageous on the one hand be when the closer shaft is between the closer spring and the damping device is arranged. on the other hand can the arrangement of the damping device and Energy storage on the same side of the closer shaft be beneficial. The closer shaft is then possible stored at the ends in the housing.
  • the damping device comprises a damping piston which is connected by means of a rod, for example via a crank mechanism.
  • the damping device and the Closer spring parallel in its direction of action, in particular be arranged coaxially to one another. Then will act on the normally open shaft Well balanced moments. Good kinematics and one flat especially in the axial direction of the closer shaft Construction of the door closer is possible if the Closer shaft is rotatable about an axis in arranged substantially perpendicular to the direction of action is.
  • the traction means at least in sections on a outer circumferential surface of the closer shaft rests, wherein the lateral surface is preferably an angle-dependent varying distance from the center axis of the
  • the closer lever has, the effective lever arm, with which the traction device attacks on the closer shaft, almost can be set arbitrarily. It is an advantage if the effective lever arm of the traction device on the NO shaft in the area of small door opening angles on greatest is. This will ensure that the Door even in the event of a difficult door latch or drafts guaranteed.
  • the variation of the lever arm can be particularly simple about the thickness and / or shape of the traction device, especially over links of different lengths Pull chain must be set.
  • the possible variations are diverse and overall inexpensive accessible.
  • Figure 1 is a door closer in a cross section shown.
  • a door closer shaft 1 is rotatable in a housing 2 arranged, the axis of rotation perpendicular stands on the drawing level according to FIG. 1.
  • the closer shaft 1 divides the housing 2 approximately in Ratio 2/3: 1/3 in a longer housing part and a shorter housing part.
  • the longer housing part surrounds a closer spring 3, which is surrounded by a sleeve 4 surrounded and penetrated by a tie rod 5.
  • a Pull chain 6 connects the pull rod 5 as a pulling means the closer shaft 1.
  • the pull chain 6 engages in a bearing 7 at a distance from the central axis of the Closer shaft there.
  • the closer spring is supported with its end near the shaft 3 from a bottom 8 of the sleeve 4.
  • the far end of the wave the closer spring 4 rests on a spring plate 9 which is connected to the pull rod 5 in a tensile manner.
  • the sleeve 4 is in turn tensile with a cover 10 Adjusting screw 11 connected.
  • the adjusting screw 11 finally supports itself against the far end of the Housing 2 from the front.
  • the shorter housing part contains a damping device with a cylindrical housing section 12, the one Damping piston 13 surrounds.
  • the damping piston 13 is integrally connected to a piston rod 14, the again articulated with a connecting rod-like Link 15 and about this with the Closer shaft 1 is connected.
  • the point of attack of the Link 15 on the closer shaft 1 is the Attack point 7 immediately adjacent, so that also between the connecting member 15 and the closer shaft 1 a lever arm results.
  • the attenuator further contains in in a known manner, an adjusting screw 16, the via a compression spring 17 a valve ball 18 in its seat holds. This results in a pressure relief valve when the door is opened or closed quickly resulting internal pressure limited.
  • the Piston 13 a check valve 20 that the damping-free Opening the door allowed, but in the closing direction closed is.
  • the piston 13 surrounds one annular seal 21 for separating the two Working spaces of the hydraulic fluid.
  • Figure 2 shows the door closer of Figure 1 in one Cross section parallel to the axis of rotation of the closer shaft 1.
  • the same components have the same reference numbers characterized.
  • Figure 3 shows the damping device in cross section according to Figure 1 in an enlarged view. It is can be seen that the housing part 12 in the area of Passage of the rod 14 with an outward-pointing Collar 23 is provided, which is essentially surrounds the rod 14 in a rotationally symmetrical manner. Between the Rod 14 and the housing portion 12 is also a Slide bushing 24 arranged to guide the rod 14th takes over.
  • FIG. 4 shows the damping device 3 in a cross section along the line IV-IV.
  • two adjustable throttle valves are arranged laterally next to the guide of the rod 14. These throttle valves are used to adjust the Damping levels, one over the entire Opening area of the door is effective while a second Valve in the angular range just before the door closes damping becomes active and in this angular range reduced so that the door snaps into the Closing latch takes place at a higher speed.
  • the entire housing portion 12 um its defined by the axis of the rod 14 Center axis is rotatable because the collar 23 in one corresponding groove of the longer housing section intervenes.
  • the throttle valves 25 are in one any orientation rotatable.
  • the Housing dimensions, which in Figure 1, the width of the Represents housing, essentially only by the Lever arm between the closer shaft 1 and the Attack point 7 is determined.
  • the one described so far Door closers are therefore very narrow and can be built without further be installed directly in a door leaf, without going beyond this. It is optical This makes door closers essentially invisible.
  • Another major advantage of the presented Arrangement lies in the modularity of the structure by namely the door closer to an energy store Side of the closer shaft and an attenuator for other side of the closer shaft. At maybe occurring leaks of the attenuator can this removed from the actual door closer will be repaired or replaced without the rest of the door closer must be dismantled.
  • the closer spring 3 no special precautions necessary to prevent this area from escaping from Secure hydraulic fluid. There is hydraulic fluid not in this part of the door closer. This makes possible finally, a relatively simple construction for Setting the preload of the closer spring 3.
  • the Adjustment screw 10 can namely over a Threaded portion 26 (shown in Figure 2) entire sleeve 4 with the bottom 8 of the closer shaft 1 move away. This increases the preload NO spring 3, which ultimately results in a larger one Closing moment with small opening angles of the door leads.
  • the pressure-free and not fluid-tight housing of the Energy storage can be kept particularly slim making a relatively strong one even with small dimensions Closer spring can be installed. This means that Compared to conventional door closers the same Installation thickness greater torques can be achieved.
  • the housing can be made from easy-to-manufacture stamped and bent parts be composed. This is particularly inexpensive.
  • the modular design has also for the Manufacturing operations advantages, namely it can be common attenuator for different drives be used so that with door closers with for example, other swivel ranges only the Energy storage and drive unit must be changed while an identical attenuator as with others Models can be used.
  • the not necessarily fluid-tight encapsulation of the Energy storage enables direct for the first time optical control of the position of the spring preload a viewing window or a display pen. So far tapping the spring preload was a mechanical one challenging problem, for example, about a magnetic transmission of the position of the abutment after has been solved on the outside. A simple visual inspection is again not only particularly inexpensive, but also very desirable in practice because the default setting of the Door closer an important for a certain door size The point of view for fire and smoke protection doors is. Poor recognition of the spring preload leads often to wrong basic settings and corresponding safety deficiencies.

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Description

Die vorliegende Erfindung betrifft einen Türschließer mit den Merkmalen des Oberbegriffs des Anspruchs 1.The present invention relates to a door closer the features of the preamble of claim 1.

Derartige Türschließer sind bekannt, beispielsweise aus der auf die Anmelderin zurückgehenden DE 9319541 U1. In dieser Druckschrift ist ein Türschließer offenbart, der eine Schließerfeder und ein hydraulisches Dämpfungsglied in Gestalt eines Dämpfungskolbens aufweist. Die Schließerfeder wirkt unmittelbar auf den Dämpfungskolben und arbeitet mit diesem zusammen in einem gemeinsamen Gehäuse. Die Schließerwelle trägt ein Ritzel, das mit einer Innenverzahnung in dem Dämpfungskolben kämmt.Such door closers are known, for example from DE 9319541 U1, which goes back to the applicant. In this publication discloses a door closer which a closer spring and a hydraulic damping element in the form of a damping piston. The The closer spring acts directly on the damping piston and works together with them in a common Casing. The closer shaft carries a pinion that with an internal toothing meshes in the damping piston.

Aus dieser Bauweise ergeben sich in der Praxis zwei Probleme. Zum einen ist die Dicke des Türschließers in Radialrichtung der Schließerwelle relativ groß, da der Dämpfungskolben die Schließerwelle umgibt. Zum anderen ist die Schließerfeder in einem Teil der Dämpfungsvorrichtung angeordnet und steht mit dem Hydraulikfluid in Kontakt. Bei einem Fehler oder Leck der Dämpfungseinrichtung muß deshalb auch der der Schließerfeder zugeordnete Teil des Türschließers geöffnet werden. Der hierdurch entstehende hohe Reparaturaufwand führt im allgemeinen dazu, daß der Türschließer komplett ausgewechselt werden muß.In practice, this construction results in two Problems. For one thing, the thickness of the door closer is in Radial direction of the closer shaft is relatively large because of the Damping piston surrounds the closer shaft. On the other hand is the closer spring in part of the Damping device arranged and stands with the Hydraulic fluid in contact. In the event of an error or leak Damping device must therefore also the Part of the door closer assigned to the closer spring be opened. The resulting high Repair effort generally leads to the Door closers must be replaced completely.

Aus der DE 196 20 382 A1 ist ein Türschließer bekannt, der einen Energiespeicher in Gestalt einer Schließerfeder aufweist, der über ein Zugmittel beabstandet von der Schließerwelle angeordnet ist. Eine Dämpfungseinrichtung ist bei diesem Türschließer nicht vorgesehen.A door closer is known from DE 196 20 382 A1, an energy storage device in the form of a closer spring has, which is spaced from the Closer shaft is arranged. A damping device is not intended for this door closer.

Die DE 19548202 A1 zeigt einen Reibungsdämpfer für derartige Türschließer, der separat in einer Führungsschiene des Schließergestänges vorgesehen sein muß. Derartige Reibungsdämpfer erreichen nicht den gewünschten Schließablauf, der mit hydraulischen Dämpfungsgliedern zu erzielen ist.DE 19548202 A1 shows a friction damper for such door closer, which is separately in a Guide rail of the closer linkage can be provided got to. Such friction dampers do not achieve that desired closing sequence with hydraulic Attenuators can be achieved.

Aus der US-A- 2 834 039 ist ein Türschließer mit einem Energiespeicher bekannt, der eine Schließerfeder enthält, mit einer von der Schließerfeder antreibbaren Schließerwelle sowie mit einer hydraulischen in einem separaten Gehäuse vorgesehenen fluidgedämpften Dämpfungsvorrichtung, wobei der Energiespeicher und die Dämpfungsvorrichtung gemeinsam auf die Schließerwelle wirken und die Schließerfeder und die Schließerwelle nicht mit dem Fluid der Dämpfungsvorrichtung in Kontakt stehen. Ein entsprechender Türschließer ist ebenfalls aus der EP-A-0 029 190 bekannt. From US-A-2 834 039 is a door closer with a Energy storage known that contains a closer spring with a driven by the closer spring Closer shaft and with a hydraulic in one separate housing provided fluid-damped Damping device, the energy storage and the Damping device together on the closer shaft act and the closer spring and the closer shaft not in contact with the fluid of the damping device stand. A corresponding door closer is also off EP-A-0 029 190.

Es ist deshalb Aufgabe der vorliegenden Erfindung, einen Türschließer zu schaffen, der eine schlankere Bauweise ermöglicht. Außerdem ist es Aufgabe der vorliegenden Erfindung, einen Türschließer zu schaffen, bei dem der Antriebsteil und der Dämpfungsteil einfach voneinander getrennt werden können, sowie der Türschließer leichter montierbar bzw. einstellbar ist.It is therefore an object of the present invention to To create door closers of a leaner design allows. It is also the task of the present Invention to create a door closer in which the Drive part and the damping part simply from each other can be separated, as well as the door closer easier is mountable or adjustable.

Diese Aufgaben werden von dem Türschließer mit den Merkmalen gemäß Anspruchs gelöst.These tasks are performed by the door closer with the Features solved according to claim.

Dadurch, daß die Dämpfungsvorrichtung mit ihrem separaten Gehäuseabschnitt um die Wirkrichtung drehbar angeordnet ist, ergeben sich besondere Vorteile. Je nach Einbaulage kann die Dämpfungsvorrichtung mit ihren Einstellventilen so orientiert werden, daß sie von einer zugänglichen Seite der Türzarge oder des Türblattes her einstellbar sind. Dabei kann der die Dämpfungsvorrichtung umgebende Gehäuseabschnitt zu der Schließerwelle hin einen nach außen weisenden, ringförmig umlaufenden Kragen tragen, der in eine ringförmige, zu der Stange hin offene Nut eingreift und mit dieser ein Drehlager bildet.The fact that the damping device with its separate Housing section rotatable about the direction of action there are special advantages. Depending on the installation position can the damping device with its adjustment valves be oriented in such a way that they are accessible from an Side of the door frame or door leaf adjustable are. The one surrounding the damping device can Housing section towards the closer shaft wear an outward-facing, ring-shaped collar, in an annular groove open to the rod engages and forms a pivot bearing with this.

Vorteilhaft ist es, wenn die Schließerfeder eine Schraubenfeder ist, die außen von einer Hülse umgeben ist, wobei das der Schließerwelle zugewandte Ende der Hülse einen nach innen weisenden Bund bildet, der als Widerlager für die Schließerfeder ausgebildet ist. Weiter kann die Schließerfeder über eine auf das der Schließerwelle abgewandte Ende der Hülse wirkende Einstellvorrichtung in ihrer Vorspannung einstellbar sein. So ergibt sich eine einfache und betriebssichere Einstellvorrichtung. Weil die Schließerfeder und die Schließerwelle nicht mit dem Fluid der Dämpfungsvorrichtung in Kontakt stehen, werden sie nicht mit dem im Betrieb in der Dämpfungsvorrichtung auftretenden dynamischen Druck beaufschlagt. Die Schließerfeder und die Schließerwelle können deshalb in relativ einfachen, insbesondere nicht fluiddichten Gehäusen angeordnet sein, die darüber hinaus relativ dünnwandig ausgeführt sein können. Hieraus ergibt sich zum einen ein Vorteil an Material- und Bearbeitungskosten während der Fertigung. Zum anderen verringert die geringe Wandstärke des Gehäuses im Bereich des Energiespeichers die Gesamtabmessungen und das Gewicht des Türschließers.It is advantageous if the closer spring is a Coil spring is surrounded on the outside by a sleeve is, the end facing the closer shaft Sleeve forms an inward facing collar, which as Abutment for the closer spring is formed. Further can the closer spring over a on the End of the sleeve acting away from the closer shaft Adjustment device adjustable in its preload his. This results in a simple and reliable Adjustment. Because the closer spring and the closer shaft are not included are in contact with the fluid of the damping device, they will not work with the in the Damping device occurring dynamic pressure applied. The closer spring and the closer shaft can therefore in relatively simple, especially not fluid-tight housings may be arranged beyond that can be made relatively thin-walled. From this results on the one hand an advantage in material and Processing costs during manufacturing. On the other hand reduces the thin wall thickness of the housing in the area of the energy storage, the overall dimensions and that Weight of the door closer.

Wenn der Energiespeicher, die Schließerwelle und die Dämpfungsvorrichtung mit ihren jeweiligen Gehäuseabschnitten zu einer gemeinsamen baulichen Einheit zusammengefaßt sind, können die Gehäuseabschnitte in Ausführung und Wandstärke den individuellen Anforderungen der Baugruppen angepaßt werden. Als gemeinsame bauliche Einheit können sie jedoch wie ein herkömmlicher Türschließer gemeinsam an der Tür oder der Zarge montiert werden. Die Schließerfeder kann über ein Zugmittel, insbesondere über eine Kette auf die Schließerwelle wirken. Dies ergibt eine einfache, kostengünstige und zuverlässige Kraftübertragung.If the energy storage, the closer shaft and Damping device with their respective Housing sections to a common structural unit are summarized, the housing sections in Design and wall thickness to meet individual requirements of the modules can be adjusted. As a common structural Unity, however, they can be like a conventional one Door closer mounted together on the door or frame become. The closer spring can be pulled, especially via a chain on the closer shaft Act. This results in a simple, inexpensive and reliable power transmission.

Je nach Einbaulage kann es von Vorteil sein, wenn die Dämpfungsvorrichtung in Radialrichtung neben der Schließerwelle angeordnet ist oder wenn die Dämpfungsvorrichtung in Axialrichtung der Schließerwelle angeordnet ist. Ebenso kann es einerseits vorteilhaft sein, wenn die Schließerwelle zwischen der Schließerfeder und der Dämpfungsvorrichtung angeordnet ist. Andererseits kann die Anordnung der Dämpfungsvorrichtung und des Energiespeichers auf derselben Seite der Schließerwelle vorteilhaft sein. Die Schließerwelle ist dann möglichst endseitig in dem Gehäuse gelagert.Depending on the installation position, it can be advantageous if the Damping device in the radial direction next to the Closer shaft is arranged or if the Damping device in the axial direction of the closer shaft is arranged. It can also be advantageous on the one hand be when the closer shaft is between the closer spring and the damping device is arranged. on the other hand can the arrangement of the damping device and Energy storage on the same side of the closer shaft be beneficial. The closer shaft is then possible stored at the ends in the housing.

Weiter ist es von Vorteil, wenn die Dämpfungsvorrichtung einen Dämpfungskolben umfaßt, der mittels einer Stange, beispielsweise über einen Kurbeltrieb, angetrieben wird. Dabei können die Dämpfungsvorrichtung und die Schließerfeder in ihrer Wirkrichtung parallel, insbesondere koaxial zueinander angeordnet sein. Dann werden die jeweils auf die Schließerwelle wirkenden Momente gut ausgeglichen. Eine gute Kinematik und ein besonders in Axialrichtung der Schließerwelle flache Bauweise des Türschließers ist möglich, wenn die Schließerwelle um eine Achse drehbar ist, die im wesentlichen senkrecht zu der Wirkrichtung angeordnet ist.It is also advantageous if the damping device comprises a damping piston which is connected by means of a rod, for example via a crank mechanism. The damping device and the Closer spring parallel in its direction of action, in particular be arranged coaxially to one another. Then will act on the normally open shaft Well balanced moments. Good kinematics and one flat especially in the axial direction of the closer shaft Construction of the door closer is possible if the Closer shaft is rotatable about an axis in arranged substantially perpendicular to the direction of action is.

Wenn das Zugmittel zumindest abschnittsweise an einer äußeren Mantelfläche der Schließerwelle anliegt, wobei die Mantelfläche vorzugsweise einen winkelabhängig variierenden Abstand von der Mittenachse der Schließerwelle aufweist, kann der effektive Hebelarm, mit dem das Zugmittel an der Schließerwelle angreift, nahezu beliebig eingestellt werden. Dabei ist von Vorteil, wenn der effektive Hebelarm des Zugmittels an der Schließerwelle im Bereich geringer Türöffnungswinkel am größten ist. Hierdurch wird ein sicheres Schließen der Tür auch bei schwergängiger Türfalle oder Zugluft gewährleistet. Dies kann besonders effektiv dadurch erreicht werden, daß das Zugmittel an der Schließerwelle im Bereich geringer Türöffnungswinkel über einen Hebel angreift, so daß ein etwa cosinusförmiger Drehmomentverlauf erzielt wird, sich das Zugmittel bei größeren Öffnungswinkeln an die Schließerwelle anlegt, so daß das Drehmoment ab dann im wesentlichen nicht weiter abfällt.If the traction means at least in sections on a outer circumferential surface of the closer shaft rests, wherein the lateral surface is preferably an angle-dependent varying distance from the center axis of the The closer lever has, the effective lever arm, with which the traction device attacks on the closer shaft, almost can be set arbitrarily. It is an advantage if the effective lever arm of the traction device on the NO shaft in the area of small door opening angles on greatest is. This will ensure that the Door even in the event of a difficult door latch or drafts guaranteed. This can be particularly effective be achieved that the traction means on the closer shaft in the area of small door opening angles using a lever attacks so that an approximately cosine Torque curve is achieved, the traction means creates larger opening angles on the closer shaft, so that the torque is then essentially no further drops.

Ein guter Komfort beim Öffnen der Tür im Bereich mittlerer Türöffnungswinkel ist gegeben, wenn der effektive Hebelarm des Zugmittels an der Schließerwelle im Bereich mittlerer Türöffnungswinkel ein Minimum aufweist. Außerdem kann der effektive Hebelarm zu großen Türöffnungswinkeln hin ansteigen. Dadurch wird eine Zunahme der Öffnungskraft bei geöffneter Tür erreicht. Obwohl dies den Türöffnungswinkel kinematisch nicht begrenzt, verhindert es jedoch, daß bei konstantem Kraftaufwand die Tür gegen ein Hindernis anschlägt.Good comfort when opening the door in the area average door opening angle is given when the effective lever arm of the traction device on the closer shaft a minimum in the area of the middle door opening angle having. In addition, the effective lever arm can be too large Rise door opening angles. This will make one Opening force increased with door open. Although this is not kinematically the door opening angle limited, however, it prevents that at constant The door strikes an obstacle.

Dabei kann die Variation des Hebelarms besonders einfach über die Dicke und/oder Gestalt des Zugmittels, insbesondere über unterschiedlich lange Glieder einer Zugkette festgelegt sein. Die möglichen Variationen sind hierbei vielfältig und insgesamt kostengünstig zugänglich.The variation of the lever arm can be particularly simple about the thickness and / or shape of the traction device, especially over links of different lengths Pull chain must be set. The possible variations are diverse and overall inexpensive accessible.

Im folgenden wird ein Ausführungsbeispiel der vorliegenden Erfindung anhand der Zeichnung näher beschrieben.In the following an embodiment of the present invention with reference to the drawing described.

Es zeigen:

Figur 1:
Einen erfindungsgemäßen Türschließer in einem Querschnitt von oben;
Figur 2:
den Türschließer gemäß Figur 1 in einem Querschnitt von der Seite;
Figur 3:
die Dämpfungsvorrichtung des Türschließers in einer vergrößerten Ansicht gemäß Figur 1; sowie
Figur 4:
einen Querschnitt durch die Dämpfungsvorrichtung entlang der Linie IV-IV aus Figur 3.
Show it:
Figure 1:
A door closer according to the invention in a cross section from above;
Figure 2:
the door closer according to Figure 1 in a cross section from the side;
Figure 3:
the damping device of the door closer in an enlarged view according to Figure 1; such as
Figure 4:
a cross section through the damping device along the line IV-IV of Figure 3.

In der Figur 1 ist ein Türschließer in einem Querschnitt dargestellt. Eine Türschließerwelle 1 ist drehbar in einem Gehäuse 2 angeordnet, wobei die Drehachse senkrecht auf der Zeichenebene gemäß Figur 1 steht.In Figure 1 is a door closer in a cross section shown. A door closer shaft 1 is rotatable in a housing 2 arranged, the axis of rotation perpendicular stands on the drawing level according to FIG. 1.

Die Schließerwelle 1 teilt das Gehäuse 2 etwa im Verhältnis 2/3 : 1/3 in einen längeren Gehäuseteil und einen kürzeren Gehäuseteil. Der längere Gehäuseteil umgibt eine Schließerfeder 3, die von einer Hülse 4 umgeben und von einer Zugstange 5 durchsetzt wird. Eine Zugkette 6 verbindet als Zugmittel die Zugstange 5 mit der Schließerwelle 1. Die Zugkette 6 greift dabei in einem Lager 7 im Abstand von der Mittenachse der Schließerwelle dort an.The closer shaft 1 divides the housing 2 approximately in Ratio 2/3: 1/3 in a longer housing part and a shorter housing part. The longer housing part surrounds a closer spring 3, which is surrounded by a sleeve 4 surrounded and penetrated by a tie rod 5. A Pull chain 6 connects the pull rod 5 as a pulling means the closer shaft 1. The pull chain 6 engages in a bearing 7 at a distance from the central axis of the Closer shaft there.

Mit ihrem wellennahen Ende stützt sich die Schließerfeder 3 an einem Boden 8 der Hülse 4 ab. Das wellenferne Ende der Schließerfeder 4 liegt an einem Federteller 9 an, der zugfest mit der Zugstange 5 verbunden ist. Die Hülse 4 ist ihrerseits über einen Deckel 10 zugfest mit einer Einstellschraube 11 verbunden. Die Einstellschraube 11 stützt sich schließlich gegen das wellenferne Ende des Gehäuses 2 stirnseitig ab.The closer spring is supported with its end near the shaft 3 from a bottom 8 of the sleeve 4. The far end of the wave the closer spring 4 rests on a spring plate 9 which is connected to the pull rod 5 in a tensile manner. The sleeve 4 is in turn tensile with a cover 10 Adjusting screw 11 connected. The adjusting screw 11 finally supports itself against the far end of the Housing 2 from the front.

Der kürzere Gehäuseteil enthält eine Dämpfungsvorrichtung mit einem zylindrischen Gehäuseabschnitt 12, der einen Dämpfungskolben 13 umgibt. Der Dämpfungskolben 13 ist einstückig mit einer Kolbenstange 14 verbunden, die wiederum gelenkig mit einem pleuelartigen Verbindungsglied 15 und über dieses mit der Schließerwelle 1 verbunden ist. Der Angriffspunkt des Verbindungsgliedes 15 an der Schließerwelle 1 liegt dem Angriffspunkt 7 unmittelbar benachbart, so daß sich auch zwischen dem Verbindungsglied 15 und der Schließerwelle 1 ein Hebelarm ergibt. Das Dämpfungsglied enthält weiter in an sich bekannter Weise eine Einstellschraube 16, die über eine Druckfeder 17 eine Ventilkugel 18 in ihrem Sitz hält. Hierdurch ergibt sich ein Druckbegrenzungsventil, das bei schnellem Öffnen oder Schließen der Tür den entstehenden Innendruck begrenzt. Desweiteren enthält der Kolben 13 ein Rückschlagventil 20, daß das dämpfungsfreie Öffnen der Tür erlaubt, in Schließrichtung jedoch geschlossen ist. Schließlich umgibt den Kolben 13 eine ringförmige Dichtung 21 zur Trennung der beiden Arbeitsräume des Hydraulikfluides.The shorter housing part contains a damping device with a cylindrical housing section 12, the one Damping piston 13 surrounds. The damping piston 13 is integrally connected to a piston rod 14, the again articulated with a connecting rod-like Link 15 and about this with the Closer shaft 1 is connected. The point of attack of the Link 15 on the closer shaft 1 is the Attack point 7 immediately adjacent, so that also between the connecting member 15 and the closer shaft 1 a lever arm results. The attenuator further contains in in a known manner, an adjusting screw 16, the via a compression spring 17 a valve ball 18 in its seat holds. This results in a pressure relief valve when the door is opened or closed quickly resulting internal pressure limited. Furthermore, the Piston 13 a check valve 20 that the damping-free Opening the door allowed, but in the closing direction closed is. Finally, the piston 13 surrounds one annular seal 21 for separating the two Working spaces of the hydraulic fluid.

Die Figur 2 zeigt den Türschließer der Figur 1 in einem Querschnitt parallel zu der Drehachse der Schließerwelle 1. Gleiche Bauelemente sind mit gleichen Bezugsziffern gekennzeichnet.Figure 2 shows the door closer of Figure 1 in one Cross section parallel to the axis of rotation of the closer shaft 1. The same components have the same reference numbers characterized.

Es ist erkennbar, daß das Zugmittel der Schließerfeder, die Kette 6, doppelt ausgeführt ist und jeweils oben und unten in der Figur 2 an der Schließerwelle 1 angreift, während das Verbindungsglied 15 einfach ausgeführt ist und mittig zwischen den beiden Teilen der Kette 6 an der Schließerwelle angreift.It can be seen that the traction means of the closer spring, the chain 6, is double and each top and acts on the closer shaft 1 at the bottom in FIG. 2, while the connector 15 is simple and in the middle between the two parts of the chain 6 on the Closer shaft attacks.

Figur 3 zeigt die Dämpfungsvorrichtung im Querschnitt gemäß Figur 1 in einer vergrößerten Darstellung. Es ist ersichtlich, daß der Gehäuseteil 12 im Bereich des Durchtritts der Stange 14 mit einem nach außen weisenden Kragen 23 versehen ist, der im wesentlichen rotationssymmetrisch die Stange 14 umgibt. Zwischen der Stange 14 und dem Gehäuseabschnitt 12 ist zudem eine Gleitbuchse 24 angeordnet, die die Führung der Stange 14 übernimmt.Figure 3 shows the damping device in cross section according to Figure 1 in an enlarged view. It is can be seen that the housing part 12 in the area of Passage of the rod 14 with an outward-pointing Collar 23 is provided, which is essentially surrounds the rod 14 in a rotationally symmetrical manner. Between the Rod 14 and the housing portion 12 is also a Slide bushing 24 arranged to guide the rod 14th takes over.

Die Figur 4 zeigt schließlich die Dämpfungsvorrichtung der Figur 3 in einem Querschnitt entlang der Linie IV-IV. Hier ist erkennbar, daß zwei einstellbare Drosselventile seitlich neben der Führung der Stange 14 angeordnet sind. Diese Drosselventile dienen zum Einstellen des Dämpfungsgrades, wobei eines über den gesamten Öffnungsbereich der Tür wirksam ist, während ein zweites Ventil im Winkelbereich kurz vor der Schließung der Tür aktiv wird und in diesem Winkelbereich die Dämpfung herabsetzt, so daß das Einschnappen der Tür in die Schließfalle mit größerer Geschwindigkeit erfolgt.Finally, FIG. 4 shows the damping device 3 in a cross section along the line IV-IV. Here you can see that two adjustable throttle valves are arranged laterally next to the guide of the rod 14. These throttle valves are used to adjust the Damping levels, one over the entire Opening area of the door is effective while a second Valve in the angular range just before the door closes damping becomes active and in this angular range reduced so that the door snaps into the Closing latch takes place at a higher speed.

In der Praxis arbeitet der insoweit beschriebene Türschließer wie folgt. Ein an der Schließerwelle 1 angebrachter Hebel beziehungsweise ein Scherengestänge, das mit einer Tür in Verbindung steht, wird beim Öffnen der Tür in der Darstellung der Figur 1 gegen den Uhrzeigersinn bewegt, so daß sich die Schließerwelle 1 gegen den Uhrzeigersinn dreht. Über das Zugmittel 6, die Zugstange 5 und den Federteller 9 wird die Schließerfeder 3 gegen das Widerlager 8 gespannt. Auf diese Weise wird die zum Schließen der Tür notwendige Energie gespeichert. Das Dämpfungsglied wird über das Verbindungsglied 15 und die Stange 15 in der Figur 1 nach links gedrückt, wobei durch das Rückschlagventil 20 das Hydraulikfluid von einem Arbeitsvolumen in das andere Arbeitsvolumen strömt, ohne nennenswerten Dämpfungswiderstand aufzubauen. In practice, the one described so far works Door closers as follows. One on the closer shaft 1 attached lever or a pair of scissors, that is connected to a door, is opened the door in the representation of Figure 1 against the Moves clockwise so that the closer shaft 1 turns counterclockwise. About the traction 6, the Drawbar 5 and the spring plate 9 becomes the closer spring 3 clamped against the abutment 8. That way the energy required to close the door is stored. The attenuator is via the link 15 and the rod 15 in Figure 1 pressed to the left, wherein through the check valve 20, the hydraulic fluid from one work volume flows into the other work volume, without building up any significant damping resistance.

Subjektiv wird das Öffnen der Tür alleine gegen den Widerstand der Schließerfeder 3 bewirkt und erfolgt mit im wesentlichen geschwindigkeitsunabhängigem Drehmoment. Bei der Rückkehr in die Ruheposition, wie sie in Figur 1 und Figur 2 dargestellt ist, expandiert die Schließerfeder 3 gegen den Federteller 9 und zieht über die Zugstange 5 und das Zugmittel 6 an dem Angriffspunkt 7 der Schließerwelle 1. Dies bewirkt ein Drehmoment in Richtung des Uhrzeigersinns gemäß Figur 1, so daß die mit dem Türschließer verbundene Tür geschlossen wird. Dabei wird die Schließbewegung gedämpft, weil der Kolben 13 das Fluid nicht über das Rückschlagventil 20, sondern über die einstellbaren Drosselventile 25 in den linken Arbeitsraum befördern muß. Dies führt zu einer Dämpfung der Schließbewegung und damit zu einer Begrenzung der Schließgeschwindigkeit. Im letzten Moment des Schließvorgangs, wenn die Schließerwelle 1 im wesentlichen die Stellung gemäß Figur 1 erreicht hat, ist zum einen der Hebelarm zwischen dem Angriffspunkt 7 und der Drehachse der Schließerwelle 1 besonders groß, zum anderen wird das zweite Drosselventil 25 parallel zu dem ersten Drosselventil geschaltet, so daß die Dämpfung abnimmt. Beide Effekte bewirken eine Zunahme des Schließmoments und der Schließgeschwindigkeit, so daß der Widerstand einer eventuell schwergängigen Türfalle sicher überwunden wird.Opening the door alone becomes subjective against the Resistance of the closer spring 3 causes and takes place with essentially speed-independent torque. When returning to the rest position, as shown in Figure 1 and Figure 2 is shown, the expands NO spring 3 against the spring plate 9 and pulls over the pull rod 5 and the pulling means 6 at the point of application 7 of the closer shaft 1. This causes a torque in Direction clockwise according to Figure 1, so that with the door connected to the door closer is closed. there the closing movement is damped because the piston 13 Fluid not via the check valve 20, but via the adjustable throttle valves 25 in the left Must transport the work area. This leads to damping the closing movement and thus to limit the Closing speed. At the last moment of the Closing process when the closer shaft 1 in has substantially reached the position shown in FIG. 1 on the one hand the lever arm between the point of attack 7 and the axis of rotation of the closer shaft 1 is particularly large for another, the second throttle valve 25 becomes parallel to that first throttle valve switched so that the damping decreases. Both effects cause an increase in Closing torque and the closing speed so that the Resistance of a possibly stiff door latch is certain is overcome.

Vorteilhaft bei dem insoweit beschriebenen Türschließer ist unter anderem, daß der gesamte Gehäuseabschnitt 12 um seine durch die Achse der Stange 14 definierte Mittenachse drehbar ist, weil der Kragen 23 in eine entsprechende Nut des längeren Gehäuseabschnitts eingreift. Hierdurch sind die Drosselventile 25 in eine beliebige Orientierung drehbar. Unabhängig von der Einbaulage des Türschließers kann der Gehäuseabschnitt 12 so gedreht werden, daß die Drosselventile 25 zugänglich sind. Weiterhin ist von Vorteil, daß die Gehäuseabmessung, die in der Figur 1 die Breite des Gehäuses darstellt, im wesentlichen nur durch den Hebelarm zwischen der Schließerwelle 1 und dem Angriffspunkt 7 bestimmt ist. Der insoweit beschriebene Türschließer baut daher sehr schmal und kann ohne weiteres unmittelbar in ein Türblatt eingebaut werden, ohne über dieses hinauszustehen. Optisch ist der Türschließer damit im wesentlichen unsichtbar.Advantageous with the door closer described so far is, among other things, that the entire housing portion 12 um its defined by the axis of the rod 14 Center axis is rotatable because the collar 23 in one corresponding groove of the longer housing section intervenes. As a result, the throttle valves 25 are in one any orientation rotatable. Independent of The housing section 12 can be installed in the door closer are rotated so that the throttle valves 25 are accessible are. Another advantage is that the Housing dimensions, which in Figure 1, the width of the Represents housing, essentially only by the Lever arm between the closer shaft 1 and the Attack point 7 is determined. The one described so far Door closers are therefore very narrow and can be built without further be installed directly in a door leaf, without going beyond this. It is optical This makes door closers essentially invisible.

Ein weiterer wesentlicher Vorteil der dargestellten Anordnung liegt in der Modularität des Aufbaus, indem nämlich der Türschließer einen Energiespeicher zu einer Seite der Schließerwelle und ein Dämpfungsglied zur anderen Seite der Schließerwelle aufweist. Bei eventuell auftretenden Undichtigkeiten des Dämpfungsgliedes kann dieses von dem eigentlichen Türschließer abgenommen werden und repariert oder ausgetauscht werden, ohne daß der übrige Teil des Türschließers zerlegt werden muß. Schließlich sind im Bereich des Energiespeichers, also der Schließerfeder 3, keine besonderen Vorkehrungen nötig, um diesen Bereich gegen den Austritt von Hydraulikfluid zu sichern. Hydraulikfluid befindet sich in diesem Teil des Türschließers nicht. Dies ermöglicht schließlich auch eine relativ einfache Konstruktion zur Einstellung der Vorspannung der Schließerfeder 3. Die Einstellschraube 10 kann nämlich über einen Gewindeabschnitt 26 (dargestellt in der Figur 2) die gesamte Hülse 4 mit dem Boden 8 von der Schließerwelle 1 wegziehen. Dadurch erhöht sich die Vorspannung der Schließerfeder 3, was letztlich zu einem größeren Schließmoment bei geringen Öffnungswinkeln der Tür führt. Another major advantage of the presented Arrangement lies in the modularity of the structure by namely the door closer to an energy store Side of the closer shaft and an attenuator for other side of the closer shaft. At maybe occurring leaks of the attenuator can this removed from the actual door closer will be repaired or replaced without the rest of the door closer must be dismantled. Finally, in the field of energy storage, so the closer spring 3, no special precautions necessary to prevent this area from escaping from Secure hydraulic fluid. There is hydraulic fluid not in this part of the door closer. this makes possible finally, a relatively simple construction for Setting the preload of the closer spring 3. The Adjustment screw 10 can namely over a Threaded portion 26 (shown in Figure 2) entire sleeve 4 with the bottom 8 of the closer shaft 1 move away. This increases the preload NO spring 3, which ultimately results in a larger one Closing moment with small opening angles of the door leads.

Es ergibt sich insgesamt ein Türschließer mit einem geringen Einbaumaß quer zur Schließerwelle, das bis auf rund 40 mm reduziert werden kann. Hierdurch wird der Türschließer für den Einbau in ein Türblatt geeignet. Es ergibt sich weiter ein Türschließer, der einen relativ einfachen mechanischen Aufbau aufweist, indem die beiden funktionalen Gruppen voneinander getrennt werden und Fluiddichtigkeit nur in dem Dämpfungsteil gefordert ist. Der modulare Aufbau ist besonders reparaturfreundlich. Schließlich ist der Türschließer ohne Umbaumaßnahmen für mehrere Einbaupositionen anpaßbar.The result is a door closer with one small installation dimension transverse to the closer shaft, which except for can be reduced by around 40 mm. This will Door closer suitable for installation in a door leaf. It there is also a door closer that is relative has simple mechanical construction by the two functional groups are separated from each other and Fluid tightness is only required in the damping part. The modular structure is particularly easy to repair. After all, the door closer is without any conversion measures for multiple installation positions adaptable.

Das drucklose und nicht fluiddichte Gehäuse des Energiespeichers kann besonders schlank gehalten sein, wodurch auch bei geringen Abmessungen eine relativ starke Schließerfeder eingebaut werden kann. Hierdurch sind im Vergleich zu herkömmlichen Türschließern gleicher Einbaudicke größere Drehmomente erzielbar. Das Gehäuse kann aus einfach zu fertigenden Stanzbiegeteilen zusammengesetzt sein. Dies ist besonders kostengünstig. Die Modulbauweise hat dabei auch für den Fertigungsbetrieb Vorteile, es kann nämlich ein gemeinsames Dämpfungsglied für verschiedene Antriebe verwendet werden, so daß bei Türschließern mit beispielsweise anderen Schwenkbereichen nur die Energiespeicher- und Antriebseinheit geändert werden muß, während ein identisches Dämpfungsglied wie bei anderen Modellen eingesetzt werden kann.The pressure-free and not fluid-tight housing of the Energy storage can be kept particularly slim making a relatively strong one even with small dimensions Closer spring can be installed. This means that Compared to conventional door closers the same Installation thickness greater torques can be achieved. The housing can be made from easy-to-manufacture stamped and bent parts be composed. This is particularly inexpensive. The modular design has also for the Manufacturing operations advantages, namely it can be common attenuator for different drives be used so that with door closers with for example, other swivel ranges only the Energy storage and drive unit must be changed while an identical attenuator as with others Models can be used.

Die nicht notwendigerweise fluiddichte Kapselung des Energiespeichers ermöglicht erstmals eine direkte optische Kontrolle der Position der Federvorspannung über ein Sichtfenster oder über einen Anzeigestift. Bislang war das Abgreifen der Federvorspannung ein mechanisch anspruchsvolles Problem, das beispielsweise über eine magnetische Übertragung der Position des Widerlagers nach außen gelöst worden ist. Eine einfache Sichtkontrolle ist wiederum nicht nur besonders kostengünstig, sondern auch in der Praxis sehr erwünscht, da die Voreinstellung des Türschließers für eine bestimmte Türgröße ein wichtiger Gesichtspunkt bei Feuer- und Rauchschutztüren ist. Schlechte Erkennbarkeit der Federvorspannung führt hierbei häufig zu falschen Grundeinstellungen und entsprechenden Sicherheitsmängeln.The not necessarily fluid-tight encapsulation of the Energy storage enables direct for the first time optical control of the position of the spring preload a viewing window or a display pen. So far tapping the spring preload was a mechanical one challenging problem, for example, about a magnetic transmission of the position of the abutment after has been solved on the outside. A simple visual inspection is again not only particularly inexpensive, but also very desirable in practice because the default setting of the Door closer an important for a certain door size The point of view for fire and smoke protection doors is. Poor recognition of the spring preload leads often to wrong basic settings and corresponding safety deficiencies.

Claims (18)

  1. Door closer comprising an energy storage means, having a resisting spring (3), a closer shaft (1) drivable by the resisting spring (3) as well as having a hydraulic fluid-damped damping device (12, 13), the energy storage means and the damping device (12, 13) acting on a common closer shaft (1), whereby the resisting spring (3) and the closer shaft (1) are not in contact with the fluid of the damping device (12, 13), characterised in that the damping device (12, 13) is arranged to be able to rotate around its effective direction.
  2. Door closer according to Claim 1, characterised in that the energy storage means, the closer shaft (1) and the damping device (12, 13) with respective housing sections (2, 12) are consolidated in a common structural unit.
  3. Door closer according to Claim 1 or 2, characterised in that the resisting spring (3) operates via a driver, especially by way of a chain (6) on the closer shaft (1).
  4. Door closer according to any one of the preceding claims, characterised in that the damping device is arranged in the radial direction next to the closer shaft.
  5. Door closer according to any one of Claims 1 to 3, characterised in that the damping device (12, 13) is arranged in the axial direction to the closer shaft (1).
  6. Door closer according to any one of Claims 1 to 3, characterised in that the closer shaft (1) is situated between the resisting spring (3) and the damping device (12, 13).
  7. Door closer according to any one of the previous Claims 1 to 4, as well as 6, characterised in that the damping device (12, 13) and the energy storage means are arranged on the same side of the closer shaft (1).
  8. Door closer according to any one of the preceding claims, characterised in that the damping device (12, 13) includes a damper piston (13), that is driven by a rod (15).
  9. Door closer according to any one of the preceding claims, characterised in that the damping device (12, 13) and the resisting spring (3) are arranged parallel to one another, especially coaxially, in their effective direction.
  10. Door closer according to any one of the preceding claims, characterised in that the closer shaft (1) can be rotated around an axis, that is arranged essentially perpendicular to the effective direction.
  11. Door closer according to any one of the preceding claims, characterised in that the housing section (12) surrounding the damping device (12, 13) in the direction of the closer shaft (1) carries an annular running collar (23) facing outward, which catches an annular groove open towards the shaft (14) and with it forms a rotary bearing.
  12. Door closer according to any one of the preceding claims, characterised in that the resisting spring (3) is a helical spring, that is externally encased in a sheath (4), whereby the end of the sheath (4) facing the closer shaft (1) forms an inward connection (8), that is formed as a counter bearing for the resisting spring (3).
  13. Door closer according to Claim 12, characterised in that the initial torque of the resisting spring (3) can be adjusted by way of an adjusting device (11, 26) acting on the end (10) of the sheath (4) opposite to the closer shaft.
  14. Door closer according to Claim 3, characterised in that the driver (5, 6) at least segmentally opposes an outer jacket surface of the closer shaft (1), whereby the jacket surface preferably has an angular-dependent varying distance from the middle axis of the closer shaft (1).
  15. Door closer according to any one of Claims 3 or 14, characterised in that the effective lever arm of the driver (5, 6) is greatest at the closer shaft (1) in the area of low door opening angles.
  16. Door closer according to any one of Claims 3, 14, or 15, characterised in that the driver (5, 6) engages the closer shaft (1) in the area of low door opening angles via a lever, so that a somewhat cosinusoidal torque is achieved and the driver (5, 6) abuts the closer shaft (1) at greater opening angles, so that essentially the torque from that point does not essentially further diminish.
  17. Door closer according to any one of Claims 3 or 14, characterised in that the effective lever arm of the driver at the closer shaft (1) in the area of medium door opening angles has a minimum and increases to large door opening angles.
  18. Door closer according to any one of Claims 15 to 17, characterised in that the variation of the lever arm is ascertained by way of the thickness and/or form of the driver (5, 6), particularly concerning the different lengths of links of a drive chain.
EP99105904A 1998-07-14 1999-03-24 Door closer with reduced dimensions Expired - Lifetime EP0972902B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19831393 1998-07-14
DE19831393.4A DE19831393B4 (en) 1998-07-14 1998-07-14 door closers

Publications (2)

Publication Number Publication Date
EP0972902A1 EP0972902A1 (en) 2000-01-19
EP0972902B1 true EP0972902B1 (en) 2004-07-28

Family

ID=7873917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105904A Expired - Lifetime EP0972902B1 (en) 1998-07-14 1999-03-24 Door closer with reduced dimensions

Country Status (3)

Country Link
US (1) US6434788B1 (en)
EP (1) EP0972902B1 (en)
DE (1) DE19831393B4 (en)

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US8225458B1 (en) 2001-07-13 2012-07-24 Hoffberg Steven M Intelligent door restraint
CN109634366B (en) * 2019-01-02 2021-05-11 王涵 Notebook computer

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US20060021189A1 (en) * 2004-07-30 2006-02-02 Johnson Loring M Door closer
WO2008134442A1 (en) 2007-04-24 2008-11-06 Yale Security Inc. Door closer assembly
EP2468998B1 (en) * 2009-08-20 2019-09-18 Sugatsune Kogyo Co., Ltd. Door opening and closing device
US9163446B2 (en) 2010-03-17 2015-10-20 Yale Security Inc. Door control apparatus
US8527101B2 (en) 2010-04-16 2013-09-03 Yale Security Inc. Door closer assembly
US8415902B2 (en) 2010-04-16 2013-04-09 Yale Security Inc. Door closer with calibration mode
US8779713B2 (en) 2010-04-16 2014-07-15 Yale Security Inc. Door closer with dynamically adjustable latch region parameters
US8564235B2 (en) 2010-04-16 2013-10-22 Yale Security Inc. Self-adjusting door closer
US8773237B2 (en) 2010-04-16 2014-07-08 Yale Security Inc. Door closer with teach mode
US8547046B2 (en) 2010-04-16 2013-10-01 Yale Security Inc. Door closer with self-powered control unit
DE102013113092A1 (en) * 2013-11-27 2015-05-28 Dorma Deutschland Gmbh Door locking device
US10947764B2 (en) * 2017-09-08 2021-03-16 Schlage Lock Compaq, y LLC Door closer diagnostics system

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US9045927B1 (en) 2001-07-13 2015-06-02 Steven M. Hoffberg Intelligent door restraint
US9121217B1 (en) 2001-07-13 2015-09-01 Steven M. Hoffberg Intelligent door restraint
CN109634366B (en) * 2019-01-02 2021-05-11 王涵 Notebook computer

Also Published As

Publication number Publication date
DE19831393B4 (en) 2016-12-08
EP0972902A1 (en) 2000-01-19
US6434788B1 (en) 2002-08-20
DE19831393A1 (en) 2000-01-20

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