EP0562465B1 - Door closer with combined valve for damping on opening and for closing speed - Google Patents

Door closer with combined valve for damping on opening and for closing speed Download PDF

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Publication number
EP0562465B1
EP0562465B1 EP93104463A EP93104463A EP0562465B1 EP 0562465 B1 EP0562465 B1 EP 0562465B1 EP 93104463 A EP93104463 A EP 93104463A EP 93104463 A EP93104463 A EP 93104463A EP 0562465 B1 EP0562465 B1 EP 0562465B1
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EP
European Patent Office
Prior art keywords
door
piston
valve
closer
channel
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
EP93104463A
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German (de)
French (fr)
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EP0562465A1 (en
Inventor
Paul Schmid
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Individual
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Individual
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Classifications

    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/12Special devices controlling the circulation of the liquid, e.g. valve arrangement
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05FDEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F3/00Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
    • E05F3/04Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
    • E05F3/10Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
    • E05F3/102Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with rack-and-pinion transmission between driving shaft and piston within the closer housing
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING SCHEME 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
    • E05Y2201/00Constructional elements; Accessories therefor
    • E05Y2201/20Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2201/00Constructional elements; Accessories therefor
    • E05Y2201/20Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/23Actuation thereof
    • E05Y2201/232Actuation thereof by automatically acting means
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2201/00Constructional elements; Accessories therefor
    • E05Y2201/20Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/252Type of friction
    • E05Y2201/254Fluid or viscous friction
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2201/00Constructional elements; Accessories therefor
    • E05Y2201/40Motors; Magnets; Springs; Weights; Accessories therefor
    • E05Y2201/43Motors
    • E05Y2201/448Fluid motors; Details thereof
    • E05Y2201/458Valves
    • EFIXED CONSTRUCTIONS
    • E05LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05YINDEXING 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
    • E05Y2900/00Application of doors, windows, wings or fittings thereof
    • E05Y2900/10Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13Type of wing
    • E05Y2900/132Doors

Definitions

  • the invention relates to a door closer, with an adjustable opening damping as an additional function is provided.
  • a third flow channel with a third adjustable Valve activated to enable the so-called end stroke that is, the door with sufficient speed to drop in the lock.
  • the main disadvantage of this is that a slowly opening door is braked exactly as a door that opens quickly.
  • the throttle valve has however, the task of that when violently belated Doors dampening increased, with one slowly opening door reduces the damping or even is turned off.
  • DE-A-2527607 shows a door closer with one valve each for closing damping, opening damping and a closing delay. Doing so Contamination of the closing delay valve avoided, by its valve seat from backflowing oil the opening damping is lifted off. From CH-A-514 062 and DE-C-533 818 door closers are known which only have an adjustable valve for closing damping; opening damping is not provided. A door closer is known from GB-A-2 156 950, at a thermostatic valve in a flow channel the closing damping determines. An opening damping is also not provided here.
  • FR-A-2 323 857 shows a door closer with control rod and electrohydraulic blocking of the Open position but without opening damping.
  • DE-A-1 806 002 shows a spring arrangement in a door closer without Opening damping.
  • the invention is therefore based on the object to create a door closer that mentioned Does not have disadvantages, and which in particular easier to manufacture and easier to Is set, and at what valve contamination does not occur.
  • the Valve can also at any point on the flow channel to be ordered. Because when operating the door closer only one valve for the functions mentioned to be set, the setting also becomes essential facilitated. It has been shown that with the same Valve one for both functions Setting value can be achieved, especially with one heavy door. Since the closing force (spring force) is increased, the valve must be closed somewhat to achieve the correct closing speed. This also makes the throttle gap of the opening damping reduced synchronously. That has again with the result that the opening damping is increased and is precisely adapted to the door weight.
  • Valve contamination also comes in handy not open, as the valve opens and closes every time fluid flowed through from both sides becomes.
  • Figure 1 shows a plan view of a Door closer 1 with a cuboid housing 21.
  • the housing 21 is preferably made of a profile piece formed, which each face by means of a Plate 22 is closed.
  • a flange 20 is provided, which for attachment of the door closer on the door or on the door frame serves.
  • the pressure-tight connection of the profile piece with the plates 22 by means of screws or rivets or by welding, preferably by Electron beam welding.
  • the production of the profile piece is carried out by extrusion or continuous casting.
  • the Profile piece is e.g. made of aluminium.
  • the flow channels are usually from round cross-sectional shape, but can also have other cross-sectional shapes exhibit.
  • Figure 2 shows a section along the Line A - A of Figure 1.
  • the Piston 32 arranged in the hollow cylindrical, fluid-filled Interior ( Figure 5) of the housing 21 in the hollow cylindrical, fluid-filled Interior ( Figure 5) of the housing 21 in the hollow cylindrical, fluid-filled Interior ( Figure 5) of the housing 21 in the hollow cylindrical, fluid-filled Interior ( Figure 5) of the housing 21 is the Piston 32 arranged.
  • This is a hollow piston with the Cavity 8 formed.
  • the inside of the piston is the piston formed as a rack, which in a tooth axis 41 (closer axis, Figure 5) engages in Housing 21 is mounted by means of needle bearings 42.
  • the Closing axis is on known (not shown) Way coupled with the door or the door frame, so that the door movement in a rotation of the closer axis, or. converted into a linear movement of the piston 32 becomes.
  • the piston 32 divides the cylindrical Cavity of the housing in two pressure spaces 10 or 11.
  • the piston is in the position shown in its one end position, which in the piston position closed door corresponds. If the door is opened, so the piston 32 over the tooth axis and rack against the force of the springs 5, 6 to the right (in the Drawing) moved.
  • the oil in the pressure chamber can first through the bypass opening 17 in Piston flange 36 flow, the piston 32 being practical no resistance due to the oil filling of the housing 21 experiences. From a door opening angle of approx.
  • Control rod 82 closes the bypass opening at 70 degrees. In Figure 2, the control rod 82 is not spring-loaded control rod shown, each in the Bypass opening 17 penetrates.
  • the control stick can too be designed as a spring-loaded control rod, which the Bypass opening only acted upon and then moved resiliently with the piston.
  • valve 30 is a throttle for the Oil flow provided, so that occurs from the valve 30 certain opening damping in function.
  • valve 30 blocks the flow channel 45 completely.
  • the constricted throttle region arrives in the housing 21 of the valve with a smaller diameter in the flow channel 45 and partially releases it, whereby the oil flow is throttled adjustable.
  • the adjusting screw of the valve 30 can be seen from above. Screwing in the screw reduces the Throttling of the oil and thus the damping of the opening Door; the screw movement is accordingly clockwise marked with a minus sign.
  • the valve 30 is preferably turned off a plastic material with a high coefficient of thermal expansion manufactured. This allows Changes in viscosity of the fluid with changes in temperature be balanced.
  • the pressure-tight closure takes place on the end faces of the flow channel by a ball or plug 35 made of plastic.
  • the continuous flow channel 45 shown also allows the valve to be installed on any Point along the flow channel.
  • the valve 30 can, as shown in Figure 4, across the flow channel 45 be arranged. However, as in FIG. 6 shown, lie axially in the flow channel.
  • a special adjusting screw 4 is provided for Adjustment of the axially lying valve body 40 against the force of a return spring 43.
  • Figure 4 shows another flow channel 55, which is also in the housing 2 outside the area the shaft for the tooth axis 41 is arranged.
  • a short one Section of this flow channel serves as a fluid line for the end stop function of the door closer, at which at the end of the closing path the closing damping is significantly reduced so that the door is secure falls into the castle.
  • the fluid is made the pressure chamber 10 via channel bores 46, 47 via the Flow channel 55 passed into the piston cavity 8 to the damping of the closing process by the fluid in the Reduce pressure chamber 10.
  • the flow channel 55 is also a valve 50 arranged to the end stroke to be able to adjust.
  • the flow channel 55 is also sealed with plastic balls or plugs 51. Because only a short distance in the end stroke setting this flow channel 55 is used, the rest are used elsewhere.
  • the unused part can, for example, with a plug 53 from the end impact part be separated.
  • the rest of the flow channel can now be used as an expansion channel.
  • the means that the flow channel with the middle unpressurized space is connected by means of a channel bore.
  • a pin 57 is also pressed into this channel bore, which, however, does not prevent permeability.
  • the pin serves as a stop for the plug 53.
  • the So pin is a spring pin or a non-round pin, which ensures the permeability of the hole.
  • a ball is now in the flow channel 58 (or more balls) made of plastic or rubber.
  • the ball 58 is at room temperature Assembly pushed in up to pin 57 and separates sealing one between the ball 58 and the plug 51 located air-filled flow channel part (compression space) from the oil-filled flow channel part (Expansion space 56) connected to the middle space is.
  • An increase in the temperature of the door closer occurs an expansion of the Oil volume.
  • the increase in the oil volume in the door closer creates an overpressure in the door closer, which acts on the ball 58. This shifts in the flow channel in the direction of stopper 51 and increases thus the oil intake volume of the door closer.
  • the piston 32 is preferably off several parts, a rack as a middle part, one Opening piston flange 36 and a closing piston flange 34 built, these parts together are screwed.
  • a piston is particularly simple producible and inexpensive.
  • a slide film 33 made of polytetrafluoroethylene (PTFE) provided to the sliding properties of the piston (usually made of steel) in the housing (in the Rule made of aluminum).
  • an adhesive disc 92 e.g. made of rubber or PVC, inserted to turn of the clamping plate 91 when adjusting the spring preload to be avoided by means of the clamping screw 71.
  • an adhesive disc e.g. made of rubber or PVC, inserted to turn of the clamping plate 91 when adjusting the spring preload to be avoided by means of the clamping screw 71.
  • an adhesive disc between the Spring support provided on the piston flange 36 and the spring.
  • the door closer Preferably in the door closer two springs 5 and 6 arranged one inside the other.
  • the longer spring 5 extends between the piston flange 36 and the clamping plate 91, which means one accessible from the outside of the housing 21
  • Tension screw 71 is displaceable in the housing. Means Clamping plate and clamping screw is on the piston acting spring preload set. In the shown middle bias position acts in the shown Piston rest position (door closed) only the long one Spring 5 on the piston.
  • the short spring 6 is not effective.
  • a spring force is applied to the piston, exercised according to the spring characteristic of the spring 5, corresponding to a door closer size 3.
  • the short spring 6 of the piston becomes like this acts that the spring 6 is effective. It results the added spring characteristic.
  • both springs 5, 6 are effective (added spring characteristic), from a door opening angle of approx. 60 degrees and smaller, only the spring 5 acts with a correspondingly reduced spring force on the piston 32 a.
  • the short spring 6 comes up to one Door opening angle of 90 degrees (or more) not at all used because the piston travel is not sufficient, around the short spring between piston 32 and Clamping plate 91 to be effective.
  • the door closer works between opening and closing 0 and 90 degrees only with the spring characteristic of the long one Spring 5, corresponding to a door closer size 2.
  • Located at the maximum adjustable spring preload the clamping plate 91 in its right end position. The distance from the rest position of the piston to the clamping plate is now such that the short spring 6 from the beginning always on the piston 32 when opening and closing acts.
  • the springs act according to the added Spring characteristic.
  • This configuration of the door closer are the DIN values for all preload settings achievable for 2 degrees and 90 degrees door opening.
  • FIG. 7 shows a preferred embodiment of the valve 30, which is transverse to the flow channel is arranged.
  • the valve has a non-linear Throttle curve on.

Landscapes

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

Abstract

The door closer has a fluid-damped piston (32) which is movable in a housing (21) counter to a spring force (5, 6) and which subdivides the housing (21) into two pressure spaces (10, 11). A flow channel (45) connects the two pressure spaces (10, 11). Arranged in the flow channel (45) is a valve (30) which determines both the opening damping and the closing speed of the door closer. A door closer which is simpler to produce and simpler to adjust is thereby obtained. <IMAGE>

Description

Die Erfindung betrifft einen Türschliesser, bei dem eine einstellbare Oeffnungsdämpfung als Zusatzfunktion vorgesehen ist.The invention relates to a door closer, with an adjustable opening damping as an additional function is provided.

Solche Türschliesser sind bekannt. Beim Oeffnen der Türe wird zunächst das Fluid durch den sich im Gehäuse verschiebenden Kolben vom ersten Druckraum durch eine Bypass-Oeffnung im Kolben in den drucklosen Raum gefördert; in dieser Bewegungsphase wird die Türöffnung praktisch nicht gedämpft, um ein leichtes Oeffnen der Türe zu ermöglichen. Bei einem Türöffnungswinkel von ca. 70 Grad verschliesst ein Steuerstab die Bypass-Oeffnung. Das Fluid wird nun durch einen speziellen Strömungskanal und ein erstes einstellbares Ventil (Drosselventil) in den zweiten Druckraum geleitet. Das Ventil bestimmt durch seine Einstellung die Dämpfung der sich öffnenden Türe für den restlichen Türöffnungsweg. Zum Schliessen der Türe wird der Kolben von der gespannten Feder in Gegenrichtung bewegt. Ein zweiter Strömungskanal mit einem zweiten einstellbaren Ventil (Steuerventil), für das vom Kolben vom zweiten Druckraum zum ersten Druckraum zurückbewegte Fluid, bestimmt dabei die Schliessgeschwindigkeit der Türe. Kurz vor Erreichen der Schliessstellung wird in der Regel ein dritter Strömungskanal mit einem dritten einstellbaren Ventil aktiviert, um den sogenannten Endschlag zu ermöglichen, das heisst, die Türe mit genügender Geschwindigkeit ins Schloss fallen zu lassen.Such door closers are known. At the First the door is opened by the fluid through it piston moving in the housing from the first pressure chamber by a bypass opening in the piston in the unpressurized Promoted space; in this movement phase the door opening practically not steamed to make it easy to open to allow the door. With a door opening angle A control rod of approx. 70 degrees closes the bypass opening. The fluid is now through a special Flow channel and a first adjustable valve (Throttle valve) passed into the second pressure chamber. The The valve determines the damping through its setting the opening door for the rest of the door opening path. To close the door, the piston is removed from the tensioned spring moved in the opposite direction. A second Flow channel with a second adjustable valve (Control valve), for the piston from the second pressure chamber Fluid moved back to the first pressure chamber, determined the closing speed of the door. Shortly before Reaching the closed position is usually a third flow channel with a third adjustable Valve activated to enable the so-called end stroke that is, the door with sufficient speed to drop in the lock.

Die bekannte Lösung ist aufwendig in der Herstellung, da für die Oeffnungsdämpfung und die Schliessgeschwindigkeit je ein Strömungskanal im Gehäuse ausgebildet werden muss und je ein einstellbares Ventil vorzusehen ist. Es hat sich ferner in der Praxis gezeigt, dass die richtige Einstellung der Oeffnungsdämpfung bisher nicht möglich war, da die zu drosselnde Oelmenge (Druckmittel) zu gering ist. So war bisher in der Praxis nur möglich, das Ventil offen oder geschlossen zu halten. Beim offenen Ventil war die Oeffnungsdämpfung ausgeschaltet. Beim geschlossenen Ventil wird die zu verdrängende Oelmenge im Druckraum via Ueberdruckventil abgelassen.The known solution is complex in the Manufacturing, as for the opening damping and Closing speed one flow channel in the housing must be trained and one adjustable Valve is to be provided. It has also been put into practice shown that the correct setting of the opening damping was previously not possible because the one to be throttled Oil quantity (pressure medium) is too low. So far was in only possible in practice, the valve open or closed to keep. When the valve was open, the opening was damped switched off. When the valve is closed the amount of oil to be displaced in the pressure chamber via a pressure relief valve drained.

Dies hat vor allem den Nachteil, dass eine sich langsam öffnende Türe genau so gebremst wird, wie eine sich schnell öffnende Türe. Das Drosselventil hat jedoch die Aufgabe, dass bei einer heftig aufgestossenen Türe die Dämpfung verstärkt, bei einer sich langsam öffnenden Türe die Dämpfung verringert oder sogar ausgeschaltet wird.The main disadvantage of this is that a slowly opening door is braked exactly as a door that opens quickly. The throttle valve has however, the task of that when violently belated Doors dampening increased, with one slowly opening door reduces the damping or even is turned off.

Weiter hat es sich gezeigt, dass die Verschmutzung von Drosselventil und Steuerventil die Funktion des Türschliessers beeinträchtigen kann.It has also been shown that pollution function of the throttle valve and control valve of the door closer can impair.

DE-A-2527607 zeigt einen Türschliesser mit je einem Ventil für die Schliessdämpfung, Oeffnungsdämpfung und eine Schliessverzögerung. Dabei wird eine Verschmutzung des Schliessverzögerungsventils vermieden, indem dessen Ventilsitz von rückströmendem Oel bei der Oeffnungsdämpfung abgehoben wird. Aus CH-A-514 062 und DE-C-533 818 sind Türschliesser bekannt, die nur ein einstellbares Ventil für die Schliessdämpfung aufweisen; eine Oeffnungsdämpfung ist nicht vorgesehen. Aus GB-A-2 156 950 ist ein Türschliesser bekannt, bei dem ein thermostatisches Ventil in einem Strömungskanal die Schliessdämpfung bestimmt. Eine Oeffnungsdämpfung ist auch hier nicht vorgesehen.DE-A-2527607 shows a door closer with one valve each for closing damping, opening damping and a closing delay. Doing so Contamination of the closing delay valve avoided, by its valve seat from backflowing oil the opening damping is lifted off. From CH-A-514 062 and DE-C-533 818 door closers are known which only have an adjustable valve for closing damping; opening damping is not provided. A door closer is known from GB-A-2 156 950, at a thermostatic valve in a flow channel the closing damping determines. An opening damping is also not provided here.

FR-A-2 323 857 zeigt einen Türschliesser mit Steuerstab und elektrohydraulischer Blockierung der Offenlage aber ohne Öffnungsdämpfung. DE-A-1 806 002 zeigt eine Federanordnung bei einem Türschliesser ohne Öffnungsdämpfung. FR-A-2 323 857 shows a door closer with control rod and electrohydraulic blocking of the Open position but without opening damping. DE-A-1 806 002 shows a spring arrangement in a door closer without Opening damping.

Der Erfindung liegt deshalb die Aufgabe zugrunde, einen Türschliesser zu schaffen, der die genannten Nachteile nicht aufweist, und welcher insbesondere einfacher in der Herstellung und einfacher zum Einstellen ist, und bei welchem Ventilverschmutzung nicht auftritt.The invention is therefore based on the object to create a door closer that mentioned Does not have disadvantages, and which in particular easier to manufacture and easier to Is set, and at what valve contamination does not occur.

Dies wird bei einem Türschliesser der eingangs genannten Art mit den Merkmalen des Anspruchs 1 erreicht.This is the case with a door closer mentioned type with the features of claim 1 reached.

Die Anordnung nur eines Ventils, das die Funktion von Drossel- und Steuerventil erfüllt, und nur eines Strömungskanals im Gehäuse für die Oeffnungsdämpfungsfunktion und die Schliessgeschwindigkeitsfunktion, vereinfacht die Herstellung wesentlich. Das Ventil kann ferner an beliebiger Stelle des Strömungskanals angeordnet werden. Da beim Betrieb des Türschliessers für die genannten Funktionen nur ein Ventil einzustellen ist, wird auch die Einstellung wesentlich erleichtert. Es hat sich gezeigt, dass mit dem selben Ventil jeweils ein für beide Funktionen zutreffender Einstellwert erzielbar ist, insbesondere auch bei einer schweren Türe. Da bei dieser die Schliesskraft (Federkraft) erhöht wird, muss das Ventil etwas geschlossen werden, um die richtige Schliessgeschwindigkeit zu erreichen. Dadurch wird auch der Drosselspalt der Oeffnungsdämpfung synchron verkleinert. Das hat wiederum zur Folge, dass die Oeffnungsdämpfung verstärkt wird und genau dem Türgewicht angepasst ist.The arrangement of only one valve that the Function of throttle and control valve fulfilled, and only one flow channel in the housing for the opening damping function and the closing speed function, simplifies production considerably. The Valve can also at any point on the flow channel to be ordered. Because when operating the door closer only one valve for the functions mentioned to be set, the setting also becomes essential facilitated. It has been shown that with the same Valve one for both functions Setting value can be achieved, especially with one heavy door. Since the closing force (spring force) is increased, the valve must be closed somewhat to achieve the correct closing speed. This also makes the throttle gap of the opening damping reduced synchronously. That has again with the result that the opening damping is increased and is precisely adapted to the door weight.

Eine Ventilverschmutzung tritt zudem praktisch nicht auf, da das Ventil bei jedem Oeffnungs/Schliessvorgang von beiden Seiten vom Fluid durchflossen wird.Valve contamination also comes in handy not open, as the valve opens and closes every time fluid flowed through from both sides becomes.

Im folgenden werden Ausführungsbeispiele der Erfindung anhand der Zeichnungen näher erläutert. Dabei zeigt

  • Figur 1 eine Draufsicht auf einen Türschliesser;
  • Figur 2 eine Schnittansicht durch den Türschliesser entlang der Linie A - A von Figur 1;
  • Figur 3 eine Schnittansicht entlang der Linie E - E von Figur 1;
  • Figur 4 eine Schnittansicht entlang der Linie D - D von Figur 1 mit quer zum Strömungskanal angeordnetem Ventil;
  • Figur 5 eine Schnittansicht entlang der Linie C - C von Figur 2;
  • Figur 6 eine Teilansicht eines Strömungskanals mit axial im Strömungskanal angeordnetem Ventil;
  • Figur 7 eine teilweise geschnittene Detailansicht des Drosselventils.
  • Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. It shows
  • Figure 1 is a plan view of a door closer;
  • FIG. 2 shows a sectional view through the door closer along the line AA of FIG. 1;
  • FIG. 3 shows a sectional view along the line E-E of FIG. 1;
  • FIG. 4 shows a sectional view along the line D - D of FIG. 1 with the valve arranged transversely to the flow channel;
  • Figure 5 is a sectional view taken along the line C - C of Figure 2;
  • FIG. 6 shows a partial view of a flow channel with a valve arranged axially in the flow channel;
  • Figure 7 is a partially sectioned detailed view of the throttle valve.
  • Figur 1 zeigt eine Draufsicht auf einen Türschliesser 1 mit einem quaderförmigen Gehäuse 21. Das Gehäuse 21 wird vorzugsweise von einem Profilstück gebildet, welches stirnseitig jeweils mittels einer Platte 22 verschlossen ist. An den Platten 22 ist jeweils ein Flansch 20 vorgesehen, welcher zur Befestigung des Türschliessers an der Türe oder am Türrahmen dient. Die druckdichte Verbindung des Profilstückes mit den Platten 22 erfolgt mittels Schrauben oder Nieten oder durch Schweissung, vorzugsweise durch Elektronenstrahl-Schweissung. Zur Dichtung ist ein 0-Ring 25 vorgesehen. Die Herstellung des Profilstückes erfolgt durch Strangpressen oder Stranggiessen. Das Profilstück besteht z.B. aus Aluminium. Vorzugsweise sind dabei die nachfolgend beschriebenen Strömungskanäle in dem Profil bereits vorgesehen; die Herstellung der Strömungskanäle durch Bohren erübrigt sich in diesem Fall. Die Strömungskanäle sind in der Regel von runder Querschnittsform, können aber auch andere Querschnittsformen aufweisen.Figure 1 shows a plan view of a Door closer 1 with a cuboid housing 21. The housing 21 is preferably made of a profile piece formed, which each face by means of a Plate 22 is closed. On the plates 22 is a flange 20 is provided, which for attachment of the door closer on the door or on the door frame serves. The pressure-tight connection of the profile piece with the plates 22 by means of screws or rivets or by welding, preferably by Electron beam welding. There is a 0-ring for sealing 25 provided. The production of the profile piece is carried out by extrusion or continuous casting. The Profile piece is e.g. made of aluminium. Preferably are the flow channels described below already provided in the profile; the production the flow channels through drilling are unnecessary this case. The flow channels are usually from round cross-sectional shape, but can also have other cross-sectional shapes exhibit.

    Figur 2 zeigt einen Schnitt entlang der Linie A - A von Figur 1. Im hohlzylindrischen, fluidgefüllten Innenraum (Figur 5) des Gehäuses 21 ist der Kolben 32 angeordnet. Dieser ist als Hohlkolben mit dem Hohlraum 8 ausgebildet. Kolbeninnenseitig ist der Kolben als Zahnstange ausgebildet, welche in eine Zahnachse 41 (Schliesserachse, Figur 5) eingreift, die im Gehäuse 21 mittels Nadellager 42 gelagert ist. Die Schliesserachse ist auf bekannte (nicht dargestellte) Weise mit der Türe bzw. dem Türrahmen gekoppelt, so dass die Türbewegung in eine Drehung der Schliesserachse,bzw. in eine Linearbewegung des Kolbens 32 umgesetzt wird. Der Kolben 32 unterteilt den zylindrischen Hohlraum des Gehäuses in zwei Druckräume 10 bzw. 11. In der dargestellten Stellung ist der Kolben in seiner einen Endlage, welche der Kolbenstellung bei geschlossener Türe entspricht. Wird die Türe geöffnet, so wird der Kolben 32 über Zahnachse und Zahnstange gegen die Kraft der Federn 5, 6 nach rechts (in der Zeichnung) verschoben. Das im Druckraum befindliche Oel kann dabei zunächst durch die Bypass-Oeffnung 17 im Kolbenflansch 36 fliessen, wobei der Kolben 32 praktisch keinen Widerstand durch die Oelfüllung des Gehäuses 21 erfährt. Ab einem Türöffnungswinkel von ca. 70 Grad verschliesst der Steuerstab 82 die Bypass-Oeffnung. In Figur 2 ist der Steuerstab 82 als nicht gefederter Steuerstab gezeigt, welcher jeweils in die Bypass-Oeffnung 17 eindringt. Der Steuerstab kann auch als gefederter Steuerstab ausgeführt sein, welcher die Bypass-Oeffnung nur beaufschlagt und sich danach federnd mit dem Kolben bewegt. Der Steuerstab dringt dabei nicht in die Bypass-Oeffnung ein. Das im Druckraum 11 befindliche Oel fliesst nun allein durch den Strömungskanal 45 (Figur 3) vom Druckraum 11 zum Druckraum 10. Der Strömungskanal 45 ist jeweils über eine Bohrung 27 mit dem Druckraum 11 bzw. 10 verbunden. Im Strömungskanal ist das Ventil 30 als Drossel für den Oelfluss vorgesehen, es tritt somit die vom Ventil 30 bestimmte Oeffnungsdämpfung in Funktion. In der gezeigten Stellung versperrt das Ventil 30 den Strömungskanal 45 vollständig. Durch Hineindrehen des als Schraube ausgestalteten Ventils 30 in den entsprechenden Sitz 31 im Gehäuse 21 gelangt der eingeschnürte Drosselbereich des Ventils mit geringerem Durchmesser in den Strömungskanal 45 und gibt diesen teilweise frei, wodurch der Oelfluss einstellbar gedrosselt wird. In Figur 1 ist die Einstellschraube des Ventils 30 von oben ersichtlich. Hineindrehen der Schraube vermindert die Drosselung des Oels und damit die Oeffnungsdämpfung der Türe; entsprechend ist die Schraubenbewegung im Uhrzeigersinn mit einem Minuszeichen gekennzeichnet.Figure 2 shows a section along the Line A - A of Figure 1. In the hollow cylindrical, fluid-filled Interior (Figure 5) of the housing 21 is the Piston 32 arranged. This is a hollow piston with the Cavity 8 formed. The inside of the piston is the piston formed as a rack, which in a tooth axis 41 (closer axis, Figure 5) engages in Housing 21 is mounted by means of needle bearings 42. The Closing axis is on known (not shown) Way coupled with the door or the door frame, so that the door movement in a rotation of the closer axis, or. converted into a linear movement of the piston 32 becomes. The piston 32 divides the cylindrical Cavity of the housing in two pressure spaces 10 or 11. The piston is in the position shown in its one end position, which in the piston position closed door corresponds. If the door is opened, so the piston 32 over the tooth axis and rack against the force of the springs 5, 6 to the right (in the Drawing) moved. The oil in the pressure chamber can first through the bypass opening 17 in Piston flange 36 flow, the piston 32 being practical no resistance due to the oil filling of the housing 21 experiences. From a door opening angle of approx. Control rod 82 closes the bypass opening at 70 degrees. In Figure 2, the control rod 82 is not spring-loaded control rod shown, each in the Bypass opening 17 penetrates. The control stick can too be designed as a spring-loaded control rod, which the Bypass opening only acted upon and then moved resiliently with the piston. The control stick penetrates do not enter the bypass opening. That in the printing room 11 oil now flows through the oil alone Flow channel 45 (Figure 3) from the pressure chamber 11 to Pressure chamber 10. The flow channel 45 is in each case a bore 27 is connected to the pressure chamber 11 or 10. In the flow channel, the valve 30 is a throttle for the Oil flow provided, so that occurs from the valve 30 certain opening damping in function. In the shown Position, valve 30 blocks the flow channel 45 completely. By screwing in as a screw configured valve 30 into the corresponding seat 31 the constricted throttle region arrives in the housing 21 of the valve with a smaller diameter in the flow channel 45 and partially releases it, whereby the oil flow is throttled adjustable. In Figure 1 the adjusting screw of the valve 30 can be seen from above. Screwing in the screw reduces the Throttling of the oil and thus the damping of the opening Door; the screw movement is accordingly clockwise marked with a minus sign.

    Das Ventil 30 wird bevorzugterweise aus einem Kunststoffmaterial mit einem hohen Temperaturausdehnungs-Koeffizienten hergestellt. Dadurch können Viskositätsänderungen des Fluids bei Temperaturänderungen ausgeglichen werden. Der druckdichte Verschluss an den Stirnseiten des Strömungskanals erfolgt jeweils durch eine Kugel oder Stopfen 35 aus Kunststoff.The valve 30 is preferably turned off a plastic material with a high coefficient of thermal expansion manufactured. This allows Changes in viscosity of the fluid with changes in temperature be balanced. The pressure-tight closure takes place on the end faces of the flow channel by a ball or plug 35 made of plastic.

    Beim Schliessen der Türe durch den Türschliesser wird der Kolben 32 durch die Federkraft der gespannten Feder 5 nach links verschoben. Das Fluid im Druckraum 10 wird dabei vom Kolben 32 bzw. durch dessen Schliesskolben-Flansch 34 via die Bohrung 27 in den Strömungskanal 45 gedrückt, wo wiederum das Ventil 30 als Drossel für das Fluid wirkt, welches nach dem Ventil aus dem Strömungskanal via die Bohrung 27 in den Druckaum 11 gelangt. Beim Schliessen der Türe bestimmt somit dasselbe Ventil 30, welches bereits die wirksame Oeffnungsdämpfung bestimmt hat, die Schliessgeschwindigkeit der Türe. Es hat sich überraschenderweise gezeigt, dass beide Funktionen durch das eine Ventil gut erfüllbar sind.When closing the door through the door closer is the piston 32 by the spring force of the tensioned spring 5 moved to the left. The fluid in the Pressure chamber 10 is from the piston 32 or by the piston Closing piston flange 34 via the bore 27 in the Flow channel 45 pressed, where in turn the valve 30 acts as a throttle for the fluid that flows after the valve from the flow channel via the bore 27 in the Printing area 11 arrives. Definitely when the door is closed thus the same valve 30, which is already the effective one Opening damping has determined the closing speed the door. Surprisingly, it has been shown that both functions well through the one valve are achievable.

    Der gezeigte durchgehende Strömungskanal 45 erlaubt zudem den Einbau des Ventils an einer beliebigen Stelle entlang des Strömungskanals. Das Ventil 30 kann, wie in Figur 4 gezeigt, quer zum Strömungskanal 45 angeordnet sein. Es kann aber auch, wie in Figur 6 gezeigt, axial im Strömungskanal liegen. In diesem Fall ist eine spezielle Einstellschraube 4 vorgesehen, zur Verstellung des axial liegenden Ventilkörpers 40 gegen die Kraft einer Rückstellfeder 43.The continuous flow channel 45 shown also allows the valve to be installed on any Point along the flow channel. The valve 30 can, as shown in Figure 4, across the flow channel 45 be arranged. However, as in FIG. 6 shown, lie axially in the flow channel. In this case a special adjusting screw 4 is provided for Adjustment of the axially lying valve body 40 against the force of a return spring 43.

    Figur 4 zeigt einen weiteren Strömungskanal 55, der ebenfalls im Gehäuse 2 ausserhalb des Bereichs der Welle für die Zahnachse 41 angeordnet ist. Ein kurzer Abschnitt dieses Strömungskanals dient als Fluidleitung für die Endschlagfunktion des Türschliessers, bei welcher am Ende des Schliessweges die Schliessdämpfung wesentlich reduziert wird, damit die Türe sicher ins Schloss fällt. Zu diesem Zweck wird das Fluid aus dem Druckraum 10 via Kanalbohrungen 46, 47 über den Strömungskanal 55 in den Kolbenhohlraum 8 geleitet, um die Dämpfung des Schliessvorganges durch das Fluid im Druckraum 10 zu vermindern. Im Strömungskanal 55 ist ebenfalls ein Ventil 50 angeordnet, um den Endschlag einstellen zu könnnen. Auch der Strömungskanal 55 ist mittels Kunststoffkugeln oder Stopfen 51 abgedichtet. Da bei der Endschlageinstellung nur ein kurzes Stück dieses Strömungskanals 55 verwendet wird, kann der Rest anderweitig verwendet werden. Der nicht verwendete Teil kann zum Beispiel mit einem Stopfen 53 vom Endschlagteil abgetrennt werden. Der Rest des Strömungskanals kann nun als Expansionskanal verwendet werden. Das bedeutet, dass der Strömungskanal mit dem mittleren drucklosen Raum mittels Kanalbohrung verbunden wird. In diese Kanalbohrung wird zudem ein Stift 57 gepresst, welcher die Durchlässigkeit jedoch nicht verhindert. Der Stift dient als Anschlag für den Stopfen 53. Der Stift ist also ein Spannstift oder ein unrunder Stift, welcher die Durchlässigkeit der Bohrung gewährleistet.Figure 4 shows another flow channel 55, which is also in the housing 2 outside the area the shaft for the tooth axis 41 is arranged. A short one Section of this flow channel serves as a fluid line for the end stop function of the door closer, at which at the end of the closing path the closing damping is significantly reduced so that the door is secure falls into the castle. For this purpose the fluid is made the pressure chamber 10 via channel bores 46, 47 via the Flow channel 55 passed into the piston cavity 8 to the damping of the closing process by the fluid in the Reduce pressure chamber 10. In the flow channel 55 is also a valve 50 arranged to the end stroke to be able to adjust. The flow channel 55 is also sealed with plastic balls or plugs 51. Because only a short distance in the end stroke setting this flow channel 55 is used, the rest are used elsewhere. The unused part can, for example, with a plug 53 from the end impact part be separated. The rest of the flow channel can now be used as an expansion channel. The means that the flow channel with the middle unpressurized space is connected by means of a channel bore. A pin 57 is also pressed into this channel bore, which, however, does not prevent permeability. The pin serves as a stop for the plug 53. The So pin is a spring pin or a non-round pin, which ensures the permeability of the hole.

    In den Strömungskanal wird nun eine Kugel 58 (oder mehrere Kugeln) aus Kunststoff oder Gummi eingeschoben. Die Kugel 58 wird bei Raumtemperatur bei der Montage bis an den Stift 57 eingeschoben und trennt dichtend einen zwischen der Kugel 58 und dem Stopfen 51 befindlichen luftgefüllten Strömungskanalteil (Kompressionsraum) von dem oelgefüllten Strömungskanalteil (Expansionsraum 56), der mit dem mittleren Raum verbunden ist. Tritt eine Erhöhung der Temperatur des Türschliessers ein, so folgt daraus eine Ausdehnung des Oelvolumens. Die Vergrösserung des Oelvolumens im Türschliesser erzeugt einen Ueberdruck im Türschliesser, welcher auf die Kugel 58 einwirkt. Diese verschiebt sich im Strömungskanal Richtung Stopfen 51 und vergrössert somit das Oel-Aufnahmevolumen des Türschliessers.A ball is now in the flow channel 58 (or more balls) made of plastic or rubber. The ball 58 is at room temperature Assembly pushed in up to pin 57 and separates sealing one between the ball 58 and the plug 51 located air-filled flow channel part (compression space) from the oil-filled flow channel part (Expansion space 56) connected to the middle space is. An increase in the temperature of the door closer occurs an expansion of the Oil volume. The increase in the oil volume in the door closer creates an overpressure in the door closer, which acts on the ball 58. This shifts in the flow channel in the direction of stopper 51 and increases thus the oil intake volume of the door closer.

    Beim Abkühlen des Türschliessers wird das Oelvolumen kleiner, die im Kompressionsraum komprimierte Luft zwischen der Kugel 58 und dem Stopfen 51 presst nun die verschiebbare Kugel 58 wieder an den Anschlagsstift 57 zurück, so dass im Türschliesser kein Vakum entsteht. Somit ist es möglich, den Türschliesser komplett mit Oel zu füllen, ohne dass bei einer Temperaturerhöhung der Türschliesser infolge inneren Ueberdrucks des Fluids defekt wird.When the door closer cools it will Oil volume smaller, which compressed in the compression space Presses air between the ball 58 and the plug 51 now the slidable ball 58 back to the stop pin 57 back, so that no vacuum in the door closer arises. So it is possible to complete the door closer to fill with oil without increasing the temperature the door closer due to internal overpressure of the fluid becomes defective.

    Bevorzugterweise ist der Kolben 32 aus mehreren Teilen, einer Zahnstange als Mittelteil, einem Oeffnungskolben-Flansch 36 und einem Schliesskolben-Flansch 34 aufgebaut, wobei diese Teile miteinander verschraubt sind. Ein solcher Kolben ist besonders einfach herstellbar und kostengünstig. Bevorzugterweise ist ferner zwischen der Zahnstange und der Innenwandung des Gehäuses 2 eine Gleitfolie 33 aus Polytetrafluoräthylen (PTFE) vorgesehen, um die Gleiteigenschaften des Kolbens (in der Regel aus Stahl) im Gehäuse (in der Regel aus Aluminium) zu verbessern.The piston 32 is preferably off several parts, a rack as a middle part, one Opening piston flange 36 and a closing piston flange 34 built, these parts together are screwed. Such a piston is particularly simple producible and inexpensive. Preferably is also between the rack and the inner wall the housing 2, a slide film 33 made of polytetrafluoroethylene (PTFE) provided to the sliding properties of the piston (usually made of steel) in the housing (in the Rule made of aluminum).

    Bevorzugterweise ist weiter zwischen dem Spannteller 91 und der Feder 5 eine Haftscheibe 92, z.B. aus Gummi oder PVC, eingelegt, um ein Mitdrehen des Spanntellers 91 beim Einstellen der Federvorspannung mittels der Spannschraube 71 zu vermeiden. Vorzugsweise ist eine solche Haftscheibe auch zwischen der Federauflage am Kolben-Flansch 36 und der Feder vorgesehen.It is preferred to continue between Clamping plate 91 and the spring 5 an adhesive disc 92, e.g. made of rubber or PVC, inserted to turn of the clamping plate 91 when adjusting the spring preload to be avoided by means of the clamping screw 71. Preferably is such an adhesive disc between the Spring support provided on the piston flange 36 and the spring.

    Bevorzugterweise sind im Türschliesser zwei Federn 5 bzw. 6 ineinanderliegend angeordnet. Die längere Feder 5 erstreckt sich zwischen dem Kolben-flansch 36 und dem Spannteller 91, welcher mittels einer von der Aussenseite des Gehäuses 21 zugänglichen Spannschraube 71 im Gehäuse verschieblich ist. Mittels Spannteller und Spannschraube wird die auf den Kolben wirkende Federvorspannung eingestellt. In der gezeigten, mittleren Vorspannungsstellung wirkt in der gezeigten Kolbenruhelage (Türe geschlossen) nur die lange Feder 5 auf den Kolben ein. Die kurze Feder 6 ist nicht wirksam. Bei der Verschiebung des Kolbens nach rechts (in der Zeichnung) aufgrund der Türöffnungsbewegung, wird daher zunächst eine Federkraft auf den Kolben, entsprechend der Federkennlinie der Feder 5 ausgeübt, entsprechend einer Türschliesser-Grösse 3. Nach einem vorbestimmten, von der relativen Lage des Spanntellers und des Kolbens abhängigen Türöffnungswinkel (ca. 60 Grad), wird auch die kurze Feder 6 vom Kolben derart beaufschlagt, dass die Feder 6 wirksam wird. Es ergibt sich die addierte Federkennlinie.Preferably in the door closer two springs 5 and 6 arranged one inside the other. The longer spring 5 extends between the piston flange 36 and the clamping plate 91, which means one accessible from the outside of the housing 21 Tension screw 71 is displaceable in the housing. Means Clamping plate and clamping screw is on the piston acting spring preload set. In the shown middle bias position acts in the shown Piston rest position (door closed) only the long one Spring 5 on the piston. The short spring 6 is not effective. When moving the piston to the right (in the drawing) due to the door opening movement, therefore, first a spring force is applied to the piston, exercised according to the spring characteristic of the spring 5, corresponding to a door closer size 3. After one predetermined, from the relative position of the clamping plate and the piston-dependent door opening angle (approx. 60 Degrees), the short spring 6 of the piston becomes like this acts that the spring 6 is effective. It results the added spring characteristic.

    Beim Zurückschieben des Kolbens durch die Federn beim Schliessen der Türe ergibt sich der umgekehrte Vorgang. Zunächst sind beide Federn 5, 6 wirksam (addierte Federkennlinie), ab einem Türöffnungswinkel von ca. 60 Grad und kleiner, wirkt nur noch die Feder 5 mit entsprechend verringerter Federkraft auf den Kolben 32 ein.When pushing the piston back through the Springs when closing the door results in the reverse Process. First, both springs 5, 6 are effective (added spring characteristic), from a door opening angle of approx. 60 degrees and smaller, only the spring 5 acts with a correspondingly reduced spring force on the piston 32 a.

    Bei minimaler eingestellter Federvorspannung, das heisst, der Spannteller befindet sich in seiner rechten Endstellung, ergibt sich ein anderer Vorgang. Die kurze Feder 6 kommt dabei bis zu einem Türöffnungswinkel von 90 Grad (oder mehr) gar nicht zum Einsatz, da der zurückgelegte Kolbenweg nicht ausreicht, um die kurze Feder zwischen Kolben 32 und Spannteller 91 wirksam werden zu lassen. Der Türschliesser arbeitet beim Oeffnen und Schliessen zwischen 0 und 90 Grad nur mit der Federkennlinie der langen Feder 5, entsprechend einer Türschliesser-Grösse 2. Bei der maximalen einstellbaren Federvorspannung befindet sich der Spannteller 91 in seiner rechten Endstellung. Nun ist der Abstand Ruhelage Kolben zu Spannteller derart, dass auch die kurze Feder 6 von Anfang an beim Oeffnen und Schliessen stets auf den Kolben 32 einwirkt. Es wirken die Federn entsprechend der addierten Federkennlinie.With the minimum spring preload set, that means the clamping plate is in its right end position results in another Process. The short spring 6 comes up to one Door opening angle of 90 degrees (or more) not at all used because the piston travel is not sufficient, around the short spring between piston 32 and Clamping plate 91 to be effective. The door closer works between opening and closing 0 and 90 degrees only with the spring characteristic of the long one Spring 5, corresponding to a door closer size 2. Located at the maximum adjustable spring preload the clamping plate 91 in its right end position. The distance from the rest position of the piston to the clamping plate is now such that the short spring 6 from the beginning always on the piston 32 when opening and closing acts. The springs act according to the added Spring characteristic.

    Durch diese Ausgestaltung des Türschliessers sind bei allen Vorspannungseinstellungen die DIN-Werte für 2 Grad und 90 Grad Türöffnung erzielbar.This configuration of the door closer are the DIN values for all preload settings achievable for 2 degrees and 90 degrees door opening.

    Figur 7 zeigt eine bevorzugte Ausführungsform des Ventils 30, welches quer zum Strömungskanal angeordnet ist. Das Ventil weist eine nicht lineare Drosselkurve auf. Durch diese Massnahme, zusammen mit der bekannten Ausführung des Ventils als thermostatisches Ventil, welches seine Länge mit der Temperatur ändert gelingt es, den Oeldurchfluss durch den Strömungskanal im wesentlichen temperaturunabhängig zu halten.Figure 7 shows a preferred embodiment of the valve 30, which is transverse to the flow channel is arranged. The valve has a non-linear Throttle curve on. Through this measure, together with the known version of the valve as a thermostatic Valve, its length with temperature changes the oil flow through the flow channel essentially independent of temperature hold.

    Claims (16)

    1. Door-closer which beside a closing speed also exhibits an adjustable damping on opening, with a fluid-damped piston (32, 34, 36) movable in a casing (21) through the motion of the door and against an elastic force, where the piston divides the casing in two pressure chambers (10, 11) for the fluid and is shaped as a hollow piston with a rack disposed between two piston-flanges of which one comprises a bypass-opening (17), and with a command rod (82) which closes the bypass-opening above a opening angle of the door of about 70°, a channel (45) which connects the two pressure chambers (10,11) being provided in the casing (21), which channel encloses a single adjustable valve (30) through which the fluid flows in one direction or in another whenever the door is opened or closed, where a single adjustment of this valve determines both the damping on opening and the closing speed of the door-closer.
    2. Door-closer according to claim 1, characterized in that the casing (21) consists of a hallow profile closed at each end by a terminal plate (22).
    3. Door-closer according to claim 2, characterized in that the terminal plate (22) comprises a fixing flange (20) for mounting the door-closer on a door or on a door-frame.
    4. Door-closer according to claim 2 or 3, characterized in that the channel (45) is formed by a lengthwise cavity which is part of the hollow profile.
    5. Door-closer according to any of claim 2 to 4, characterized in that the channel is closed by a plug (35) inserted into it near each terminal plate.
    6. Door-closer according to any of claim 1 to 5, characterized in that the valve comprises an adjustable valve body (30) arranged transversally in the channel (45) and which permits to adjustably restrain the flow of fluid in the channel.
    7. Door-closer according to any of claim 1 to 5, characterized in that the valve comprises an adjustable valve body (30) arranged longitudinally in the channel (45) and which permits to adjustably restrain the flow of fluid in the channel.
    8. Door-closer according to any of claim 1 to 7, characterized in that the piston forms within itself a pressureless third chamber (8), and that a second channel (55) is provided, which can provide beyond a predetermined position of piston a connection between one pressure chamber (10) and the pressureless chamber (8), in order to implement an end stop for the door.
    9. Door-closer according to claim 8, characterized in that an adjustable valve is provided in the second channel, in order to adjustably restrain the fluid flow for the end stop.
    10. Door-closer to one of claim 8 or 9, characterized in that there is provided in the second channel (55) a section which is separated from the connection of one pressure chamber (10) with the pressureless chamber (8), and that this section is divided into two parts by a sealing element (58) displaceable within the channel, one part being closed and filled with air and the other connected with the pressureless chamber (8).
    11. Door-closer to one of claim 1 to 10, characterized in that the piston is comprised of several piston elements (32, 34, 36) fixed together.
    12. Door-closer to claim 1, characterized in that the piston comprises a rack (32), an opening flange (36), and a closing flange (34), which parts are screwed together.
    13. Door-closer according to claim 11 or 12, characterized in that the piston is clad with a gliding foil (33) in order to reduce the friction between the piston and the inner wall of the causing.
    14. Door-closer according to one of claim 1 to 13, characterized in that an adjustably predetermined elastic force acts on the piston, that at least two springs (5,6) are provided, of which one (5) is always acted upon by the piston whilst the other (6) is acted upon by the piston depending on the adjustment of the adjustable elastic force.
    15. Door-closer according to one of claim 1 to 14, characterized in that the valve is a thermostatic valve with a valve body (30, 40) which varies in length according to the temperature for reducing the effect of temperature on the flow of fluid, and that the choking angle of the valve (30, 40) is non-linear in order to essentially remove the influence of temperature on the fluid flow.
    16. Door-closer according to one of claim 1 to 15, characterized in that a friction washer (92) is placed between the spring and a tension disk (91) adjustable through a tensioning screw (71) for modifying the pretension of the spring, in order to increase the friction between the tension disk and the spring.
    EP93104463A 1992-03-23 1993-03-18 Door closer with combined valve for damping on opening and for closing speed Expired - Lifetime EP0562465B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE9203873U DE9203873U1 (en) 1992-03-23 1992-03-23 Door closer with combined valve for opening damping and closing speed
    DE9203873U 1992-03-23

    Publications (2)

    Publication Number Publication Date
    EP0562465A1 EP0562465A1 (en) 1993-09-29
    EP0562465B1 true EP0562465B1 (en) 1999-01-13

    Family

    ID=6877558

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP93104463A Expired - Lifetime EP0562465B1 (en) 1992-03-23 1993-03-18 Door closer with combined valve for damping on opening and for closing speed

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    Country Link
    EP (1) EP0562465B1 (en)
    AT (1) ATE175751T1 (en)
    DE (2) DE9203873U1 (en)

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    DE102004041358B4 (en) * 2004-08-25 2006-07-13 Dorma Gmbh + Co. Kg Overhead closer
    DE102004061629A1 (en) * 2004-12-17 2006-07-06 Dorma Gmbh + Co. Kg Swing door drive
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    DE102011006877B4 (en) 2011-04-06 2015-06-11 Geze Gmbh door closers
    DE102012111539A1 (en) * 2012-11-28 2014-05-28 Dorma Gmbh + Co. Kg door actuators
    DE102013022158B3 (en) * 2013-12-19 2014-12-11 Geze Gmbh door closers
    DE102014212357B3 (en) * 2014-06-26 2015-12-24 Geze Gmbh door closers
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    Also Published As

    Publication number Publication date
    EP0562465A1 (en) 1993-09-29
    DE59309286D1 (en) 1999-02-25
    DE9203873U1 (en) 1992-09-10
    ATE175751T1 (en) 1999-01-15

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