EP3814595B1 - Damper - Google Patents

Damper Download PDF

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Publication number
EP3814595B1
EP3814595B1 EP19730121.1A EP19730121A EP3814595B1 EP 3814595 B1 EP3814595 B1 EP 3814595B1 EP 19730121 A EP19730121 A EP 19730121A EP 3814595 B1 EP3814595 B1 EP 3814595B1
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EP
European Patent Office
Prior art keywords
housing
compensation element
volume
cover
piston rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19730121.1A
Other languages
German (de)
French (fr)
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EP3814595A1 (en
Inventor
Stefan WASCHK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Druck und Spritzgusswerk Hettich GmbH and Co KG
Original Assignee
Druck und Spritzgusswerk Hettich GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Druck und Spritzgusswerk Hettich GmbH and Co KG filed Critical Druck und Spritzgusswerk Hettich GmbH and Co KG
Priority to SI201930418T priority Critical patent/SI3814595T1/en
Publication of EP3814595A1 publication Critical patent/EP3814595A1/en
Application granted granted Critical
Publication of EP3814595B1 publication Critical patent/EP3814595B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E05F5/02—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
    • 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
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E05F5/06—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops
    • E05F5/10—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops with piston brakes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/21—Brakes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/252—Type of friction
    • E05Y2201/254—Fluid or viscous friction
    • E05Y2201/256—Fluid or viscous friction with pistons or vanes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/262—Type of motion, e.g. braking
    • E05Y2201/264—Type of motion, e.g. braking linear
    • 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
    • E05Y2900/20—Application of doors, windows, wings or fittings thereof for furniture, e.g. cabinets

Definitions

  • the present invention relates to a damper, in particular for fittings for furniture or household appliances, with a housing in which a piston connected to a piston rod is guided in a linearly displaceable manner in an interior space, with at least one flow channel being formed on or in the piston of the piston, wherein a volume compensation element arranged in the housing, which compensates for a volume that is displaced or released by pushing part of the piston rod into or out of the housing, is displaceably mounted in the housing, the volume compensation element being attached to a cover which closes the housing at one end and forms a passage for the piston rod.
  • the EP 2 006 480 B1 discloses a damper in which a piston connected to a piston rod is slidably disposed in a cylindrical housing.
  • the damping forces are created by the flow resistance as the piston is displaced within the housing and a fluid flows through a flow passage on the piston.
  • a volume of the fluid is displaced, so that a displaceable volume compensation element is provided for compensation, which has an annular seal that is mounted on a retaining ring that is preloaded into the housing by a spring.
  • This design of the damper is disadvantageous, particularly in the area of the volume compensation element, since the assembly and manufacture of the individual components is complex.
  • DE 10 2007 031 175 B3 discloses a fitting with a damper in which a piston rod is linearly guided on a piston in a housing.
  • the piston divides the housing into two chambers, with a volume compensating element being provided in the chamber around the piston rod adjacent to an end cover on the housing.
  • a volume compensation element is provided by pushing in or pulling out part of the
  • Piston rod is slidably mounted in the housing or out of the housing in the housing, wherein the volume compensation element is formed integrally with a cover of the damper, which closes the housing at one end and forms a passage for the piston rod.
  • the volume compensation element can be installed together with the cover, for example by being pushed into the housing.
  • the volume compensation element is formed integrally with the cover.
  • a one-piece design leads to a reduction in the number of components, with at least one flexible web being arranged between the volume compensation element and the cover, which allows movement of the volume compensation element in the axial direction of the housing, while the cover remains rigidly fixed to the housing.
  • Such webs can, for example, be spiral-shaped in order to displaceably mount the volume compensation element by means of a bending or torsional movement.
  • the volume compensation element can optionally also be rotated during the sliding movement, in particular if the webs are arranged in a spiral shape.
  • a ring-shaped sealing element is preferably provided on the volume compensation element, which abuts on an inside of the housing and/or on the piston rod.
  • the ring-shaped sealing element can optionally be fixed to the volume compensation element as a separate component, or it can also be formed integrally with the volume compensation element.
  • the volume compensation element can be designed, for example, as an injection molded part, so that an elastic sealing element can be produced by using suitable thin-walled, flexible plastics.
  • a sleeve surrounding the piston rod can be provided on the cover to guide the piston rod.
  • the sleeve can protrude axially from the essentially disk-shaped cover, preferably outwards away from the housing.
  • the sleeve can also protrude inwards into the housing, especially if the damper is to be used in confined spaces.
  • a damper 1 comprises a housing 2 and a piston rod 5 protruding from the housing 2.
  • the housing 2 has a cylindrical section 4 in an interior space 20, on which a piston 10 is displaceably guided.
  • a widening 11 or narrowing can optionally be provided on the cylindrical section 4 in order to change the damping forces in different areas of the housing 2 .
  • a widening 11 is provided adjacent to the head 3, so that the piston 10 can be moved more easily in the area adjacent to the head 3 than at the cylindrical portion 4 on the other side of the widening 11. It is also possible to dispense with such a widening 11 and to form the cylindrical section 4 essentially continuously with the same inner diameter.
  • the piston 10 is held on the piston rod 5 which can be connected to an actuating part at one end 6 outside the housing 2 .
  • the end 6 is designed as a ball head and can also have other mechanical connection means.
  • An opposite end 7 is arranged in the housing 2 and can be inserted into a receptacle 8 on the floor 3 in an end position.
  • Also formed on the base 3 is a sleeve 9 which protrudes outwards from the housing 2 and serves to fasten the housing 2 to a component, for example a fitting for furniture or household appliances.
  • the housing 2 is closed on the side opposite the base 3 by an annular cover 13 which is held stationary on the housing 2 and can optionally also be glued or welded to it.
  • a passage for the piston rod 5 is formed on the cover 13 , a sleeve 12 protruding outwards from the essentially disc-shaped cover 13 to guide the piston rod 5 .
  • a volume compensation element 14 is integrally formed and held on the cover 13 and is displaceable in the housing 2 .
  • the volume compensation element 14 is held on the cover 13 via struts or webs 15, the webs 15 being flexible.
  • a seal 19 is arranged on the volume compensation element 14 or is formed integrally, which seal ensures a seal between the volume compensation element 14 and an inner wall of the housing 2 .
  • the seal 19 can also provide a seal against the piston rod 5 .
  • the damper 1 according to the invention is shown in an exploded view.
  • the piston 10 is held immovably in the axial direction on the piston rod 5, the piston rod 5 being able to be of stepped design for this purpose.
  • the piston can also be designed in one piece with the piston rod.
  • One or more flow channels 16 are formed on the piston 10 and can be closed at the end by an annular throttle element 17 .
  • the throttle element 17 can be formed from an elastic ring which has a passage opening 18 for the piston rod 5 .
  • the throttle element 17 can be lifted off the flow channels 16 when the piston rod 5 is pulled out, so that the piston rod 5 can be pulled out easily.
  • the throttle element 17 is pressed onto the flow channels 16 and thus ensures a flow resistance that generates the damping forces.
  • the volume compensation element 14 is connected to the cover 13 via webs 15 which are arranged in a spiral shape. Instead of two webs 15, only one web or more than two webs 15 can be provided.
  • the volume compensation element 14 is formed in one piece with the webs 15 and the cover 13, for example as an injection molded part.
  • the seal 19 can also be produced by integrally formed sealing lips, with the seal optionally also being able to be formed as a separate component.

Landscapes

  • Fluid-Damping Devices (AREA)

Description

Die vorliegende Erfindung betrifft einen Dämpfer, insbesondere für Beschläge für Möbel oder Haushaltsgeräte, mit einem Gehäuse, in dem in einem Innenraum ein mit einer Kolbenstange verbundener Kolben linear verschiebbar geführt ist, wobei an oder in dem Kolben mindestens ein Strömungskanal ausgebildet ist, der beim Verschieben des Kolbens durchströmt wird, wobei ein in dem Gehäuse angeordnetes Volumenausgleichselement, das ein Volumen kompensiert, das durch ein Einschieben oder Herausziehen eines Teils der Kolbenstange in das oder aus dem Gehäuse verdrängt oder freigegeben wird, verschiebbar in dem Gehäuse gelagert ist, wobei das Volumenausgleichselement an einer Abdeckung gehalten ist, die das Gehäuse an einem Ende verschließt und ein Durchführung für die Kolbenstange bildet.The present invention relates to a damper, in particular for fittings for furniture or household appliances, with a housing in which a piston connected to a piston rod is guided in a linearly displaceable manner in an interior space, with at least one flow channel being formed on or in the piston of the piston, wherein a volume compensation element arranged in the housing, which compensates for a volume that is displaced or released by pushing part of the piston rod into or out of the housing, is displaceably mounted in the housing, the volume compensation element being attached to a cover which closes the housing at one end and forms a passage for the piston rod.

Die EP 2 006 480 B1 offenbart einen Dämpfer, bei dem ein mit einer Kolbenstange verbundener Kolben in einem zylindrischen Gehäuse verschiebbar angeordnet ist. Die Dämpfungskräfte werden durch den Strömungswiderstand erzeugt, wenn der Kolben innerhalb des Gehäuses verschoben wird und ein Fluid durch einen Strömungskanal an dem Kolben fließt. Beim Einschieben der Kolbenstange in das Gehäuse wird dabei ein Volumen des Fluides verdrängt, so dass zur Kompensation ein verschiebbares Volumenausgleichselement vorgesehen ist, das eine ringförmige Dichtung aufweist, die an einem Haltering gelagert ist, der durch eine Feder in das Gehäuse vorgespannt ist. Dieser Aufbau des Dämpfers ist gerade im Bereich des Volumenausgleichselementes nachteilig, da die Montage und die Herstellung der einzelnen Bauteile aufwändig ist.the EP 2 006 480 B1 discloses a damper in which a piston connected to a piston rod is slidably disposed in a cylindrical housing. The damping forces are created by the flow resistance as the piston is displaced within the housing and a fluid flows through a flow passage on the piston. When the piston rod is pushed into the housing, a volume of the fluid is displaced, so that a displaceable volume compensation element is provided for compensation, which has an annular seal that is mounted on a retaining ring that is preloaded into the housing by a spring. This design of the damper is disadvantageous, particularly in the area of the volume compensation element, since the assembly and manufacture of the individual components is complex.

DE 10 2007 031 175 B3 offenbart einen Beschlag mit einem Dämpfer, bei dem eine Kolbenstange an einem Kolben in einem Gehäuse linear geführt ist. Der Kolben unterteilt das Gehäuse in zwei Kammern, wobei in der Kammer um die Kolbenstange ein Volumenausgleichselement benachbart zu einer endseitigen Abdeckung an dem Gehäuse vorgesehen ist. DE 10 2007 031 175 B3 discloses a fitting with a damper in which a piston rod is linearly guided on a piston in a housing. The piston divides the housing into two chambers, with a volume compensating element being provided in the chamber around the piston rod adjacent to an end cover on the housing.

Es ist daher Aufgabe der vorliegenden Erfindung, einen Dämpfer zu schaffen, der einfach aufgebaut und leicht zu montieren ist.It is therefore the object of the present invention to provide a damper that is simple in construction and easy to assemble.

Diese Aufgabe wird mit einem Dämpfer mit den Merkmalen des Anspruches 1 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen offenbart.This object is achieved with a damper having the features of claim 1. Advantageous configurations are disclosed in the dependent claims.

Bei dem erfindungsgemäßen Dämpfer ist ein Volumenausgleichselement vorgesehen, das durch Einschieben oder Herausziehen eines Teils derIn the damper according to the invention, a volume compensation element is provided by pushing in or pulling out part of the

Kolbenstange in das Gehäuse oder aus dem Gehäuse heraus verschiebbar in dem Gehäuse gelagert ist, wobei das Volumenausgleichselement integral mit einer Abdeckung des Dämpfers ausgebildet ist, die das Gehäuse an einem Ende verschließt und eine Durchführung für die Kolbenstange bildet. Dadurch kann das Volumenausgleichselement zusammen mit der Abdeckung montiert werden, beispielsweise durch Einschieben in das Gehäuse.Piston rod is slidably mounted in the housing or out of the housing in the housing, wherein the volume compensation element is formed integrally with a cover of the damper, which closes the housing at one end and forms a passage for the piston rod. As a result, the volume compensation element can be installed together with the cover, for example by being pushed into the housing.

Erfindungsgemäß ist das Volumenausgleichselement integral mit der Abdeckung ausgebildet. Eine einteilige Ausbildung führt zur Reduzierung der Anzahl der Bauteile, wobei zwischen dem Volumenausgleichselement und der Abdeckung mindestens ein biegbarer Steg angeordnet ist, der eine Bewegung des Volumenausgleichselementes in axiale Richtung des Gehäuses ermöglicht, während die Abdeckung starr an dem Gehäuse fixiert bleibt. Solche Stege können beispielsweise spiralförmig ausgebildet sein, um durch eine Biege- oder Torsionsbewegung das Volumenausgleichselement verschiebbar zu lagern. Das Volumenausgleichselement kann optional bei der Schiebebewegung auch gedreht werden, insbesondere wenn die Stege spiralförmig angeordnet sind.According to the invention, the volume compensation element is formed integrally with the cover. A one-piece design leads to a reduction in the number of components, with at least one flexible web being arranged between the volume compensation element and the cover, which allows movement of the volume compensation element in the axial direction of the housing, while the cover remains rigidly fixed to the housing. Such webs can, for example, be spiral-shaped in order to displaceably mount the volume compensation element by means of a bending or torsional movement. The volume compensation element can optionally also be rotated during the sliding movement, in particular if the webs are arranged in a spiral shape.

An dem Volumenausgleichselement ist vorzugsweise ein ringförmiges Dichtelement vorgesehen, das an einer Innenseite des Gehäuses und/oder an der Kolbenstange anliegt. Das ringförmige Dichtelement kann wahlweise als gesondertes Bauteil an dem Volumenausgleichselement fixiert sein, oder auch integral mit dem Volumenausgleichselement ausgebildet sein. Das Volumenausgleichselement kann beispielsweise als Spritzgussteil ausgebildet sein, so dass durch den Einsatz geeigneter dünnwandiger flexibler Kunststoffe ein elastisches Dichtelement hergestellt werden kann.A ring-shaped sealing element is preferably provided on the volume compensation element, which abuts on an inside of the housing and/or on the piston rod. The ring-shaped sealing element can optionally be fixed to the volume compensation element as a separate component, or it can also be formed integrally with the volume compensation element. The volume compensation element can be designed, for example, as an injection molded part, so that an elastic sealing element can be produced by using suitable thin-walled, flexible plastics.

Zur Führung der Kolbenstange kann an der Abdeckung eine Hülse vorgesehen sein, die die Kolbenstange umgibt. Die Hülse kann dabei von der im Wesentlichen scheibenförmigen Abdeckung axial hervorstehen, vorzugsweise nach außen weg von dem Gehäuse. Optional kann die Hülse auch nach innen in das Gehäuse hervorstehen, insbesondere wenn der Dämpfer bei beengten Platzverhältnissen eingesetzt werden soll.A sleeve surrounding the piston rod can be provided on the cover to guide the piston rod. The sleeve can protrude axially from the essentially disk-shaped cover, preferably outwards away from the housing. Optionally, the sleeve can also protrude inwards into the housing, especially if the damper is to be used in confined spaces.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels mit Bezug auf die beigefügten Zeichnungen näher erläutert. Es zeigen:

Figuren 1A und 1B
zwei Ansichten des erfindungsgemäßen Dämpfers mit ausgefahrener Kolbenstange;
Figuren 2A und 2B
zwei Ansichten des Dämpfers der Figur 1 mit eingefahrener Kolbenstange, und
Figur 3
eine perspektivische Explosionsdarstellung des Dämpfers der Figur 1.
The invention is explained in more detail below using an exemplary embodiment with reference to the accompanying drawings. Show it:
Figures 1A and 1B
two views of the damper according to the invention with the piston rod extended;
Figures 2A and 2B
two views of the damper's figure 1 with retracted piston rod, and
figure 3
an exploded perspective view of the damper figure 1 .

Ein Dämpfer 1 umfasst ein Gehäuse 2 und eine von dem Gehäuse 2 hervorstehende Kolbenstange 5. Das Gehäuse 2 weist in einem Innenraum 20 einen zylindrischen Abschnitt 4 auf, an dem ein Kolben 10 verschiebbar geführt ist. An dem zylindrischen Abschnitt 4 kann optional eine Aufweitung 11 oder Verjüngung vorgesehen sein, um die Dämpfungskräfte an unterschiedlichen Bereichen des Gehäuses 2 zu ändern. In dem dargestellten Ausführungsbeispiel ist eine Aufweitung 11 benachbart zu dem Boden 3 vorgesehen, so dass der Kolben 10 in dem Bereich benachbart zu dem Boden 3 leichtgängiger bewegt werden kann als an dem zylindrischen Abschnitt 4 auf der anderen Seite der Aufweitung 11. Es ist auch möglich, auf eine solche Aufweitung 11 zu verzichten und den zylindrischen Abschnitt 4 im Wesentlichen durchgängig mit dem gleichen Innendurchmesser auszubilden.A damper 1 comprises a housing 2 and a piston rod 5 protruding from the housing 2. The housing 2 has a cylindrical section 4 in an interior space 20, on which a piston 10 is displaceably guided. A widening 11 or narrowing can optionally be provided on the cylindrical section 4 in order to change the damping forces in different areas of the housing 2 . In the illustrated embodiment, a widening 11 is provided adjacent to the head 3, so that the piston 10 can be moved more easily in the area adjacent to the head 3 than at the cylindrical portion 4 on the other side of the widening 11. It is also possible to dispense with such a widening 11 and to form the cylindrical section 4 essentially continuously with the same inner diameter.

Der Kolben 10 ist an der Kolbenstange 5 gehalten, die an einem Ende 6 außerhalb des Gehäuses 2 mit einem Betätigungsteil verbindbar ist. Das Ende 6 ist als Kugelkopf ausgebildet und kann auch andere mechanische Verbindungsmittel aufweisen. Ein gegenüberliegendes Ende 7 ist in dem Gehäuse 2 angeordnet und kann in einer Endposition in eine Aufnahme 8 an dem Boden 3 eingefügt werden. An dem Boden 3 ist ferner eine von dem Gehäuse 2 nach außen hervorstehende Hülse 9 ausgebildet, die zur Befestigung des Gehäuses 2 an einem Bauteil, beispielsweise einem Beschlag für Möbel oder Haushaltsgeräte, dient.The piston 10 is held on the piston rod 5 which can be connected to an actuating part at one end 6 outside the housing 2 . The end 6 is designed as a ball head and can also have other mechanical connection means. An opposite end 7 is arranged in the housing 2 and can be inserted into a receptacle 8 on the floor 3 in an end position. Also formed on the base 3 is a sleeve 9 which protrudes outwards from the housing 2 and serves to fasten the housing 2 to a component, for example a fitting for furniture or household appliances.

Das Gehäuse 2 ist auf der zu dem Boden 3 gegenüberliegenden Seite durch eine ringförmige Abdeckung 13 geschlossen, die stationär an dem Gehäuse 2 gehalten ist und optional auch mit diesem verklebt oder verschweißt sein kann. An der Abdeckung 13 ist eine Durchführung für die Kolbenstange 5 ausgebildet, wobei zur Führung der Kolbenstange 5 eine Hülse 12 nach außen von der in Wesentlichen scheibenförmigen Abdeckung 13 hervorsteht.The housing 2 is closed on the side opposite the base 3 by an annular cover 13 which is held stationary on the housing 2 and can optionally also be glued or welded to it. A passage for the piston rod 5 is formed on the cover 13 , a sleeve 12 protruding outwards from the essentially disc-shaped cover 13 to guide the piston rod 5 .

An der Abdeckung 13 ist ferner ein Volumenausgleichselement 14 integral ausgebildet und gehalten, das in dem Gehäuse 2 verschiebbar ist. Wie die Figuren 1B und 2B zeigen, kann durch Einschieben der Kolbenstange 5 in das Gehäuse 2 das Fluid den Kolben 10 zur Erzeugung der Dämpfungskräfte durchströmen, wobei das Einschieben der Kolbenstange 5 das Fluidvolumen teilweise verdrängt, was durch ein Verschieben des Volumenausgleichselementes 14 kompensiert wird. Das Volumenausgleichselement 14 ist dabei über Streben oder Stege 15 an der Abdeckung 13 gehalten, wobei die Stege 15 biegbar sind. An dem Volumenausgleichselement 14 ist ferner eine Dichtung 19 angeordnet oder integral ausgebildet, die für eine Abdichtung zwischen dem Volumenausgleichselement 14 und einer Innenwand des Gehäuses 2 sorgt. Optional kann die Dichtung 19 auch eine Abdichtung gegenüber der Kolbenstange 5 bereitstellen.Furthermore, a volume compensation element 14 is integrally formed and held on the cover 13 and is displaceable in the housing 2 . As the Figures 1B and 2 B show, by pushing the piston rod 5 into the Housing 2, the fluid flow through the piston 10 to generate the damping forces, wherein the insertion of the piston rod 5 partially displaces the fluid volume, which is compensated for by a displacement of the volume compensation element 14. The volume compensation element 14 is held on the cover 13 via struts or webs 15, the webs 15 being flexible. Furthermore, a seal 19 is arranged on the volume compensation element 14 or is formed integrally, which seal ensures a seal between the volume compensation element 14 and an inner wall of the housing 2 . Optionally, the seal 19 can also provide a seal against the piston rod 5 .

In Figur 3 ist der erfindungsgemäße Dämpfer 1 in einer Explosionsdarstellung gezeigt. An der Kolbenstange 5 ist der Kolben 10 in axiale Richtung unverschieblich gehalten, wobei die Kolbenstange 5 hierfür gestuft ausgebildet sein kann. Optional kann der Kolben auch einstückig mit der Kolbenstange ausgebildet sein. An dem Kolben 10 sind ein oder mehrere Strömungskanäle 16 ausgebildet, die endseitig durch ein ringförmiges Drosselelement 17 verschließbar sind. Das Drosselelement 17 kann aus einem elastischen Ring gebildet sein, der eine Durchtrittsöffnung 18 für die Kolbenstange 5 aufweist. Dadurch kann sich das Drosselelement 17 bei einem Herausziehen der Kolbenstange 5 von den Strömungskanälen 16 abheben, so dass das Herausziehen der Kolbenstange 5 leichtgängig erfolgt. In die gegenüberliegende Richtung beim Einschieben der Kolbenstange 5 wird das Drosselelement 17 hingegen auf die Strömungskanäle 16 gedrückt und sorgt somit für einen Strömungswiderstand, der die Dämpfungskräfte erzeugt.In figure 3 the damper 1 according to the invention is shown in an exploded view. The piston 10 is held immovably in the axial direction on the piston rod 5, the piston rod 5 being able to be of stepped design for this purpose. Optionally, the piston can also be designed in one piece with the piston rod. One or more flow channels 16 are formed on the piston 10 and can be closed at the end by an annular throttle element 17 . The throttle element 17 can be formed from an elastic ring which has a passage opening 18 for the piston rod 5 . As a result, the throttle element 17 can be lifted off the flow channels 16 when the piston rod 5 is pulled out, so that the piston rod 5 can be pulled out easily. In contrast, in the opposite direction when the piston rod 5 is pushed in, the throttle element 17 is pressed onto the flow channels 16 and thus ensures a flow resistance that generates the damping forces.

Das Volumenausgleichselement 14 ist über Stege 15 mit der Abdeckung 13 verbunden, die spiralförmig angeordnet sind. Statt zwei Stegen 15 kann auch nur ein Steg oder mehr als zwei Stege 15 vorgesehen werden.The volume compensation element 14 is connected to the cover 13 via webs 15 which are arranged in a spiral shape. Instead of two webs 15, only one web or more than two webs 15 can be provided.

Das Volumenausgleichselement 14 ist einstückig mit den Stegen 15 und der Abdeckung 13 ausgebildet sein, beispielsweise als Spritzgussteil. Auch die Dichtung 19 kann durch integral ausgebildete Dichtlippen hergestellt sein, wobei optional die Dichtung auch als gesondertes Bauteil ausgebildet sein kann.The volume compensation element 14 is formed in one piece with the webs 15 and the cover 13, for example as an injection molded part. The seal 19 can also be produced by integrally formed sealing lips, with the seal optionally also being able to be formed as a separate component.

BezugszeichenlisteReference List

11
Dämpfermute
22
GehäuseHousing
33
Bodenfloor
44
zylindrischer Abschnittcylindrical section
55
Kolbenstangepiston rod
66
EndeEnd
77
EndeEnd
88th
Aufnahmerecording
99
Hülsesleeve
1010
KolbenPistons
1111
Aufweitungwidening
1212
Hülsesleeve
1313
Abdeckungcover
1414
Volumenausgleichselementvolume compensation element
1515
Stegweb
1616
Strömungskanalflow channel
1717
Drosselelementthrottle element
1818
Durchtrittsöffnungpassage opening
1919
Dichtungpoetry
2020
Innenrauminner space

Claims (8)

  1. Damper (1), in particular for fittings for furniture or household appliances, comprising a housing (2) in which a piston (10) connected to a piston rod (5) is guided in a linearly displaceable manner in an interior space (20), wherein at least one flow channel (16) is formed on or in the piston (10), through which flow channel (16) the flow passes when the piston (10) is displaced, wherein a volume-compensation element (14) arranged in the housing (2) is provided, which compensates for a volume which is displaced or released when a part of the piston rod (5) is pushed into or pulled out of the housing (2), being displaceably mounted in the housing (2), wherein the volume-compensation element (14) is held on a cover (13) which closes the housing (2) at one end and forms a through-opening for the piston rod (5), characterized in that the volume-compensation element (14) is formed integrally with the cover (13) via at least one bendable web (15).
  2. Damper according to claim 1, characterized in that the volume-compensation element (14) has an annular sealing element (19) which rests against an inner wall of the housing (2).
  3. Damper according to claim 1 or 2, characterized in that the at least one bendable web (15) is spirally aligned in the longitudinal direction of the housing (2).
  4. Damper according to claim 1 or 3, characterized in that two webs (15) are provided which connect the volume-compensation element (14) to the cover (13).
  5. Damper according to one of the preceding claims, characterized in that the cover (13) has a sleeve (12) for guiding the piston rod (5).
  6. Damper according to claim 5, characterized in that the sleeve (12) protrudes outwardly from the housing (2) and the cover (13) in the longitudinal direction of the housing (2).
  7. Damper according to one of the preceding claims, characterized in that the volume-compensation element (14), the cover (13) and at least one web (15) connecting the cover (13) to the volume-compensation element (14) are produced as an injection-molded part from plastic.
  8. Fitting, in particular hinge or self-closing device for a pull-out guide having a damper according to one of the preceding claims.
EP19730121.1A 2018-06-26 2019-06-04 Damper Active EP3814595B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201930418T SI3814595T1 (en) 2018-06-26 2019-06-04 Damper

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202018103637.8U DE202018103637U1 (en) 2018-06-26 2018-06-26 damper
PCT/EP2019/064488 WO2020001936A1 (en) 2018-06-26 2019-06-04 Damper

Publications (2)

Publication Number Publication Date
EP3814595A1 EP3814595A1 (en) 2021-05-05
EP3814595B1 true EP3814595B1 (en) 2022-09-21

Family

ID=66826952

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19730121.1A Active EP3814595B1 (en) 2018-06-26 2019-06-04 Damper

Country Status (8)

Country Link
US (1) US11866986B2 (en)
EP (1) EP3814595B1 (en)
JP (1) JP7325456B2 (en)
CN (1) CN112513397B (en)
DE (1) DE202018103637U1 (en)
PL (1) PL3814595T3 (en)
SI (1) SI3814595T1 (en)
WO (1) WO2020001936A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT525400A1 (en) * 2021-08-20 2023-03-15 Blum Gmbh Julius mute

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL105048C (en) * 1957-02-06
DE6604159U (en) * 1966-02-26 1969-12-11 Hoesch Ag SINGLE TUBE TELESCOPIC VIBRATION DAMPER, ESPECIALLY FOR MOTOR VEHICLES
DE2623873A1 (en) 1976-05-28 1977-12-15 Volkswagenwerk Ag Pressurised support for vehicle boot lid - has piston and sliding seal loaded with compression spring
US6113082A (en) * 1997-06-27 2000-09-05 Nishikawa Sangyo Co., Ltd. Spring
JPH11325152A (en) * 1998-05-19 1999-11-26 Matsushita Electric Ind Co Ltd Damper device
PT1532900E (en) * 2003-11-18 2010-05-25 Spiroplex Gmbh Support element
DE202005020820U1 (en) * 2004-09-17 2006-08-17 Julius Blum Gmbh fluid damper
DE202006003197U1 (en) * 2006-03-01 2007-07-12 Hettich-Oni Gmbh & Co. Kg Damper for furniture
DE102007031175B3 (en) * 2007-07-04 2008-10-09 Zimmer, Günther Fitting with relatively pivotable fitting parts and with a delay device
DE202009004752U1 (en) 2009-04-28 2010-09-09 Druck- und Spritzgußwerk Hettich GmbH & Co. KG Damper for furniture
WO2011027316A2 (en) * 2009-09-03 2011-03-10 Keter Plastic Ltd. Device, system, and method of injected padding
JP2011094749A (en) * 2009-10-30 2011-05-12 Hitachi Automotive Systems Ltd Shock absorber
JP5365804B2 (en) * 2009-12-22 2013-12-11 日立オートモティブシステムズ株式会社 Shock absorber
CN201705851U (en) * 2010-06-29 2011-01-12 沈秋庆 Damping buffer
AT513330B1 (en) * 2012-08-27 2017-04-15 Blum Gmbh Julius Damping device for movable furniture parts
DE102013001650B4 (en) 2013-01-31 2015-07-23 Günther Zimmer Cylinder-piston unit with piston throttle
EP2940341B1 (en) * 2014-04-30 2018-06-20 FESTO AG & Co. KG Lightweight construction structure
GB2541396A (en) * 2015-08-17 2017-02-22 Titus D O O Dekani Improvements in dampers
DE102017102079A1 (en) 2017-02-02 2018-08-02 Druck- und Spritzgußwerk Hettich GmbH & Co. KG Brake device and interior assembly of a motor vehicle with a braking device
CN106641084B (en) * 2017-02-21 2018-06-12 沈阳建筑大学 A kind of list rod damper

Also Published As

Publication number Publication date
JP2021529289A (en) 2021-10-28
DE202018103637U1 (en) 2019-09-27
WO2020001936A1 (en) 2020-01-02
EP3814595A1 (en) 2021-05-05
PL3814595T3 (en) 2023-01-23
CN112513397A (en) 2021-03-16
SI3814595T1 (en) 2023-02-28
CN112513397B (en) 2022-12-06
JP7325456B2 (en) 2023-08-14
US11866986B2 (en) 2024-01-09
US20210246703A1 (en) 2021-08-12

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