EP1487301B1 - Self-closing drawer runners with integrated damping - Google Patents

Self-closing drawer runners with integrated damping Download PDF

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Publication number
EP1487301B1
EP1487301B1 EP03744829A EP03744829A EP1487301B1 EP 1487301 B1 EP1487301 B1 EP 1487301B1 EP 03744829 A EP03744829 A EP 03744829A EP 03744829 A EP03744829 A EP 03744829A EP 1487301 B1 EP1487301 B1 EP 1487301B1
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EP
European Patent Office
Prior art keywords
rail
drawer
housing
piston
ratchet
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 - Fee Related
Application number
EP03744829A
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German (de)
French (fr)
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EP1487301A1 (en
Inventor
Horst Berger
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Alfit AG
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Alfit AG
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Publication date
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Publication of EP1487301A1 publication Critical patent/EP1487301A1/en
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40Sliding drawers; Slides or guides therefor
    • A47B88/453Actuated drawers
    • A47B88/46Actuated drawers operated by mechanically-stored energy, e.g. by springs
    • A47B88/467Actuated drawers operated by mechanically-stored energy, e.g. by springs self-closing
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00General construction of drawers, guides and guide devices
    • A47B2210/0091Drawer movement damping
    • A47B2210/0094Drawer damping device with 2 relatively movable parts to convert kinetic energy

Definitions

  • the invention relates to a provided with an automatic retraction Drawer pull-out guide with one on a cabinet wall a piece of furniture to be fastened guide rail and one - possibly with the interposition of a middle rail displaceably mounted relative to the guide rail, rail to be fastened to the drawer, wherein in one of the two aforementioned outer Rail arranged latch housing by a spring arrangement bistable in two in drawer direction of movement spaced apart end positions biased movable Pawl member is provided, which is a receptacle for has a driver provided on the other rail, which at the relative displacement of the rails at Approaching the closed position enters the receptacle and the prestressed movable pawl member from the unlocked associated end position, causing this under action the spring tension is moved to the other end position and on the driver held in the recording of this associated rail in the drawer feed direction entrains.
  • Drawer guides provided with automatic retraction This type (DE 4 020 277 C2), which one on a cabinet body extendable held drawer during the closing movement even before reaching the very closed position by the tension of a preloaded spring inevitably in the drawer closed position and against accidental Extend - for example, by the reaction of the impact shock the drawer panel on the cabinet body or by air displacement within the cabinet body during insertion or extension of adjacent drawers - hold, have been increasing in recent years.
  • the invention is based on the object, a Drawer pull-out guide with an all requirements the closing force and the holding force in the closed To set the drawer fulfilling automatic retraction create without the disadvantages of a precautionary strong selected closing force and as a result to high Acceleration of the drawer when closing exists.
  • the pawl housing and the cylindrical housing holding Extension are then expedient as elongated designed strip-like integral component, the Example by injection molding as an integral plastic part can be produced.
  • Drawer pull-out guide for a full extension with one provided between the running and the guide rail, longitudinally displaceable relative to these rails and the running and the guide rail with vertical distance formed to each other holding middle rail, It is advantageous if the pawl housing and the spring assembly in the space between the running and guide rail are arranged.
  • the automatic retraction with the integrated Damping then disappears optically completely into the drawer pull-out guide and is characterized by the location between the rails also against malfunction - for example by pinching storage in the body underneath drawer - largely secured.
  • Figure 1 shows a right angle to the withdrawal by a pull-out guide designated in its entirety by 10 laid sectional view showing the arrangement of the guide rail 12 on the associated body support wall 14 and the Arrangement of the running rail 16 in the open bottom of a designed as a closed metallic hollow profile Drawer side wall frame 18 of the drawer 20 illustrated.
  • the pull-out guide 10 is in the special case as Full extension trained, i. between the guide rail 12 and the slide rail 16 is still a middle rail 22nd arranged, which of a cross-sectionally U-shaped Metal profile is formed, whose from the connecting web part right angle horizontally folded leg into Interior of the guide rail 12 and track 16 guided Leg by in the illustrated case as stored in cages Rolls trained rolling elements each longitudinally displaceable guided and held to the assigned rail are. Since this is a known configuration of drawer pull-out guides and the Invention not on the particular embodiment shown type of pull-out is limited is the pull-out guide 10 will not be described in detail below.
  • a automatic retraction 26th is arranged, from whose left in the figure 1 vertical Limiting side of the pawl member 28 vortritt, the functional the pivotable and additionally longitudinally displaceable in the associated housing mounted latch component of aforementioned automatic intake (DE 40 20 277 C2) corresponds and with one of the guide rail 12 in the Intermediate vorzuetenden driver 30 cooperates.
  • the Automatic retraction 26, in turn, as shown in the following Description in conjunction with FIG. 2 will be made clearer, attached to the underside of the slide rail 16.
  • the overall elongated strip-like housing has in his in Figure 2 and 3 as the actual jack housing 32 to be designated subsection on which integral with an elongated extension 34 is attached, in an elongated upper recess one in the Figures 4 and 5 separately shown piston damper 36 receives.
  • the piston damper 36 will be described below with the figures 4 and 5 described in more detail.
  • the piston damper 36 has an elongated cylindrical Housing 42, from which the pawl housing 32 facing End wall 44, the free end of a piston rod 46 vortritt, which by means of one of a Anflächung 48 voratur pin 50 with the latch member 28 coupled is.
  • the piston rod carries on its opposite, in the Inside the cylindrical housing 42 lying end one displaceable in the housing 42 fitted piston 52, the in a circumferential annular groove carries an O-ring 54, wherein the Piston 52 and the O-ring 54 with respect to the clear inner diameter of the housing 42 are dimensioned so that in Interior of the right end by a housing plug 56th sealed housing 42 each on opposite Sides of the piston 52 chambers are formed out where the trapped air only under strong Throttling can cross to each other chamber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drawers Of Furniture (AREA)
  • Chutes (AREA)
  • Supply Of Fluid Materials To The Packaging Location (AREA)
  • Feeding Of Articles To Conveyors (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

A self-closing drawer guide includes a spring assembly with a piston disposed in an elongated cylindrical housing, with a piston rod attached to the piston and protruding from one end of the cylindrical housing. The spring assembly applies a force, when the drawer is being closed and when the drawer approaches the closed position, and holds the drawer in the closed position under pretension. The spring of the spring assembly that pretensions a ratchet element of the self-closing mechanism via the piston rod is arranged between the piston and one of the end walls that at least partially closes the end face of the cylindrical housing, whereby the housing of the spring assembly is fixedly arranged on the rail of the guide that supports the movable ratchet element.

Description

Die Erfindung betrifft eine mit einer Einzugsautomatik versehene Schubladen-Ausziehführung mit einer an einer Korpuswand eines Möbelstücks zu befestigenden Führungsschiene und einer - gegebenenfalls unter Zwischenschaltung einer Mittelschiene - relativ zur Führungsschiene verschieblich gelagerten, an der Schublade zu befestigenden Laufschiene, wobei in einem an einer der beiden vorgenannten äußeren Schienen angeordneten Klinkengehäuse ein durch eine Federanordnung bistabil in zwei in Schubladen-Bewegungsrichtung voneinander beabstandete Endlagen vorgespannter beweglicher Klinkenbauteil vorgesehen ist, welcher eine Aufnahme für einen an der anderen Schiene vorgesehenen Mitnehmer aufweist, welcher bei der Relativverschiebung der Schienen bei Annäherung an die Schließstellung in die Aufnahme einfährt und den vorgespannten beweglichen Klinkenbauteil aus der zugeordneten Endlage entriegelt, wodurch dieser unter Wirkung der Federspannung in die andere Endlage bewegt wird und über den in der Aufnahme gehaltenen Mitnehmer die dieser zugeordnete Schiene in Schubladen-Einzugsrichtung mitnimmt.The invention relates to a provided with an automatic retraction Drawer pull-out guide with one on a cabinet wall a piece of furniture to be fastened guide rail and one - possibly with the interposition of a middle rail displaceably mounted relative to the guide rail, rail to be fastened to the drawer, wherein in one of the two aforementioned outer Rail arranged latch housing by a spring arrangement bistable in two in drawer direction of movement spaced apart end positions biased movable Pawl member is provided, which is a receptacle for has a driver provided on the other rail, which at the relative displacement of the rails at Approaching the closed position enters the receptacle and the prestressed movable pawl member from the unlocked associated end position, causing this under action the spring tension is moved to the other end position and on the driver held in the recording of this associated rail in the drawer feed direction entrains.

Mit einer Einzugsautomatik versehene Schubladen-Führungen dieser Art (DE 4 020 277 C2), welche eine an einem Schrankkorpus ausziehbar gehalterte Schublade bei der Schließbewegung noch vor Erreichen der ganz geschlossenen Stellung durch die Spannkraft einer vorgespannten Feder zwangsläufig in die Schubladen-Schließstellung und gegen versehentliches Ausfahren - beispielsweise durch die Reaktion des Aufprallstoßes der Schubladenblende am Schrankkorpus oder durch Luftverdrängung innerhalb des Schrankkorpus beim Einschieben bzw. Ausfahren benachbarter Schubladen - halten, haben sich in den letzten Jahren in zunehmendem Umfang eingeführt. Da moderne Schubladen-Ausziehführungen durch die Lagerung der Schienen mittels Wälzkörpern oder Rollen sehr leichtgängig sind, müssen die zum Einziehen verwendeten Vorspannfedern in ihrer Vorspannung so bemessen sein, dass die zugehörigen Schubladen auch bei stärkerer Gewichtsbelastung sicher eingezogen und andererseits geringer gewichtsbelastete Schubladen auch bei Luftströmungen im Korpus nicht ungewollt geöffnet werden. Es hat sich nun gezeigt, dass hier eine optimale, allen Anforderungen Rechnung tragende Auslegung der Vorspannung der Feder schwierig ist. In der Regel wird die Spannkraft der Feder deshalb eher nach der sicheren Seite bemessen, was aber zur Folge hat, dass zumindest leichtere Schubladen auf dem Einzugsweg beschleunigt werden und am Korpus anschlagen, wenn sie nicht bewusst von der die Schublade bedienenden Person abgebremst werden. Dieses stoßartige Zuschlagen oder Zuschnappen wurde von vielen Möbelkäufern beanstandet, so dass die Möbelhersteller in den letzten Jahren dazu übergegangen sind, zusätzlich während des automatischen Einzugsvorgangs zwischen der Schublade und dem Schrankkorpus wirksam werdenden Dämpfe vorzusehen, welche verhindern, dass die Schublade auch durch mit relativ hoher Vorspannung bemessene Federn der Einzugsautomatik in zu starkem Maße beschleunigt werden können. Die Verwendung solcher zusätzlicher Dämpfer stellt einen zusätzlichen konstruktiven und - aufgrund der erforderlichen zusätzlichen Montagearbeiten - herstellungstechnischen Aufwand dar. Außerdem sind zumindest Teile der Dämpfer bei geöffneten Schubladen sichtbar, was optisch unbefriedigend ist und die zusätzliche Gefahr des Hängenbleibens von in der Schublade enthaltenem Aufbewahrungsgut birgt.Drawer guides provided with automatic retraction This type (DE 4 020 277 C2), which one on a cabinet body extendable held drawer during the closing movement even before reaching the very closed position by the tension of a preloaded spring inevitably in the drawer closed position and against accidental Extend - for example, by the reaction of the impact shock the drawer panel on the cabinet body or by air displacement within the cabinet body during insertion or extension of adjacent drawers - hold, have been increasing in recent years. Because modern drawer pull-out guides through the Storage of rails by means of rolling elements or rollers very are smooth, must be used for feeding Preload springs in their preload be sized so that the associated drawers even with heavier weight load safely retracted and on the other hand less weighted Drawers even with air currents in the body not be opened unintentionally. It has now been shown that here an optimal, all requirements account bearing design of the bias of the spring difficult is. In general, the clamping force of the spring is therefore rather measured on the safe side, but what the result that has at least lighter drawers on the feederway be accelerated and strike at the corpus when they unaware of the drawer-handling person be slowed down. This jerky slamming or snapping was objected to by many furniture buyers, so that the furniture manufacturers have gone over in recent years are, in addition during the automatic collection process between the drawer and the cabinet body expect vapors which prevent the drawer also by with relatively high bias measured Springs of automatic retraction accelerated too much can be. The use of such additional Damper provides an additional constructive and - due to the required additional assembly work - In addition, manufacturing costs are at least Parts of the dampers visible with the drawers open, which is visually unsatisfactory and the additional danger the sticking of storage material contained in the drawer harbors.

Der Erfindung liegt demgegenüber die Aufgabe zugrunde, eine Schubladen-Ausziehführung mit einer allen Anforderungen an die Schließkraft und die Haltekraft in der geschlossenen Stellung der Schublade erfüllenden Einzugsautomatik zu schaffen, ohne dass die Nachteile einer vorsorglich stark gewählten Schließkraft und daraus resultierend zu hoher Beschleunigung der Schublade beim Schließen besteht.The invention is based on the object, a Drawer pull-out guide with an all requirements the closing force and the holding force in the closed To set the drawer fulfilling automatic retraction create without the disadvantages of a precautionary strong selected closing force and as a result to high Acceleration of the drawer when closing exists.

Ausgehend von einer mit einer Einzugsautomatik versehenen Schubladen-Ausziehführung der eingangs erwähnten Art wird diese Aufgabe erfindungsgemäß dadurch gelöst, dass dass die Federanordnung einen in einem langgestreckten zylindrischen Gehäuse angeordneten Kolben mit einer am Kolben angesetzten und aus einem Ende des zylindrischen Gehäuses herausgeführten Kolbenstange aufweist, dass zwischen dem Kolben und einer der das zylindrische Gehäuse stirnseitig zumindest teilweise verschließenden Stirnwänden die den beweglichen Klinkenbauteil über die Kolbenstange vorspannende Feder der Federanordnung angeordnet ist, und dass das Gehäuse der Federanordnung starr an der den beweglichen Klinkenbauteil halternden Schiene angeordnet ist. Erfindungsgemäß wird hier also ein mit Luft oder einem anderen fluiden Dämpfungsmedium arbeitender Kolbendämpfer verwendet, welcher gleichzeitig die die Vorspannung der Einzugsautomatik zur Verfügung stellende Feder aufnimmt und so in die Einzugsautomatik integriert ist.Starting from a provided with a automatic retraction Drawer pull-out of the type mentioned is this object is achieved by the fact that that Spring arrangement one in an elongated cylindrical Housing arranged piston with an attached to the piston and led out of one end of the cylindrical housing Piston rod has that between the piston and a the cylindrical housing frontally at least partially closing end walls which the movable Pawl member via the piston rod biasing spring the Spring arrangement is arranged, and that the housing of the Spring arrangement rigidly on the movable latch member holding rail is arranged. According to the invention Here, then, with air or other fluid damping medium working piston damper used which at the same time the bias of the automatic retraction for Provides available feather and so in the automatic intake is integrated.

In bevorzugter Ausgestaltung der Erfindung ist das das Klinkengehäuse an dem der am Klinkenbauteil angreifenden kolbenstangezugewandten Ende mit einer langgestreckten Verlängerung versehen, welche das die vorgespannte Feder aufnehmende zylindrische Gehäuse haltert. In a preferred embodiment of the invention that is the Pawl housing on the attacking the pawl component piston rod facing end with an elongated extension provided which receiving the preloaded spring cylindrical housing holds.

Das Klinkengehäuse und die das zylindrische Gehäuse haltende Verlängerung sind dann zweckmäßig als langgestreckter leistenartiger integraler Bauteil ausgestaltet, der zum Beispiel im Spritzgußverfahren als integraler Kunststoffteil hergestellt werden kann.The pawl housing and the cylindrical housing holding Extension are then expedient as elongated designed strip-like integral component, the Example by injection molding as an integral plastic part can be produced.

Wenn die mit der erfindungsgemäßen Einzugsautomatik versehene Schubladen-Ausziehführung für einen Vollauszug mit einer zwischen der Lauf- und der Führungsschiene vorgesehen, relativ zu diesen Schienen längsverschieblich gelagerten und die Lauf- und die Führungsschiene mit senkrechtem Abstand zueinander haltenden Mittelschiene ausgebildet ist, ist es von Vorteil, wenn das Klinkengehäuse und die Federanordnung im Zwischenraum zwischen der Lauf- und Führungsschiene angeordnet sind. Die Einzugsautomatik mit der integrierten Dämpfung verschwindet dann optisch vollständig in der Schubladen-Ausziehführung und ist durch die Lage zwischen den Schienen auch gegen Fehlfunktionen - beispielsweise durch Einklemmen von Aufbewahrungsgut in der im Korpus darunter angeordneten Schublade - weitestgehend gesichert.If provided with the automatic feed mechanism according to the invention Drawer pull-out guide for a full extension with one provided between the running and the guide rail, longitudinally displaceable relative to these rails and the running and the guide rail with vertical distance formed to each other holding middle rail, It is advantageous if the pawl housing and the spring assembly in the space between the running and guide rail are arranged. The automatic retraction with the integrated Damping then disappears optically completely into the drawer pull-out guide and is characterized by the location between the rails also against malfunction - for example by pinching storage in the body underneath drawer - largely secured.

Dabei ist es dann zweckmäßig, wenn das den Klinkenbauteil beweglich halternde Klinkengehäuse mit der integral angesetzten, den Dämpfer halternden Verlängerung an der Laufschiene und der Mitnehmer an der Führungsschiene angeordnet ist. Eine Überprüfung der Funktion der Ausziehführung ist dann bei aus dem Korpus herausgenommener Schublade ohne Schwierigkeiten möglich.It is then appropriate if the the pawl component movably holding latch housing with the integrally attached, the damper retaining extension to the track and the driver arranged on the guide rail is. A review of the function of the pull-out guide is then with drawer removed from the carcass without Difficulties possible.

Die Erfindung ist in der folgenden Beschreibung eines Ausführungsbeispiels in Verbindung mit der Zeichnung näher erläutert, und zwar zeigt:

Fig. 1
eine Schnittansicht durch eine als doppelwandige Metallzarge ausgebildeten Schubladen-Seitenwand, die mittels einer in der erfindungsgemäßen Weise ausgebildeten Schubladen-Ausziehführung in einem Schrankkorpus ausziehbar gehaltert ist;
Fig. 2
eine perspektivische Ansicht der in Figur 1 zur Lagerung der Schublade im Schrankkorpus verwendeten Schubladen-Ausziehführung, bei welcher die schrankinneren Enden der Lauf- und Führungsschiene weggebrochen sind;
Fig. 3
eine perspektivische Ansicht der bei der Schubladen-Ausziehführung gemäß Figur 2 verwendeten Einzugsautomatik mit integrierter Dämpfung;
Fig. 4
eine perspektivische Ansicht des als mit Luft als Dämpfungsmedium arbeitenden Kolbendämpfers der in Figur 3 gezeigten Einzugsautomatik, bei welcher die den durch eine als Druckfeder ausgebildete Schraubenfeder vorgespannten Kolben in montiertem Zustand innerhalb des zugeordneten zylindrischen Gehäuses einschließende Endkappe sowie ein auf dem Kolben vorgesehener Dichtring demontiert und vom Gehäuse abgehoben dargestellt sind; und
Fig. 5
den in Figur 4 gezeigten Kolbendämpfer in montiertem Zustand in einem Längsmittelschnitt.
The invention is explained in more detail in the following description of an embodiment in conjunction with the drawing, in which:
Fig. 1
a sectional view through a designed as a double-walled metal frame drawer side wall, which is held by means of a trained in the manner of the invention drawer pull-out in a cabinet carcass;
Fig. 2
a perspective view of the drawer pull-out used in Figure 1 for storage of the drawer in the cabinet body, in which the inside of the cabinet ends of the running and guide rail are broken away;
Fig. 3
a perspective view of the automatic puller with integrated damping used in the drawer pull-out according to Figure 2;
Fig. 4
3 shows a perspective view of the piston damper operating as air damping medium of the automatic retraction mechanism shown in FIG. 3, in which the piston, which is prestressed by a coil spring designed as a compression spring, is dismantled inside the associated cylindrical housing and a sealing ring provided on the piston is removed from the piston Housing are shown lifted off; and
Fig. 5
the piston damper shown in Figure 4 in the assembled state in a longitudinal center section.

Figur 1 zeigt eine rechtwinklig zur Ausziehrichtung durch eine in ihrer Gesamtheit mit 10 bezeichnete Ausziehführung gelegte Schnittansicht, welche die Anordnung der Führungsschiene 12 an der zugehörigen Korpus-Tragwand 14 und die Anordnung der Laufschiene 16 in der offenen Unterseite einer als geschlossenes metallisches Hohlprofil ausgebildete Schubladen-Seitenwandzarge 18 der Schublade 20 veranschaulicht. Die Ausziehführung 10 ist im speziellen Fall als Vollauszug ausgebildet, d.h. zwischen der Führungsschiene 12 und der Laufschiene 16 ist noch eine Mittelschiene 22 angeordnet, welche von einem im Querschnitt U-förmigen Metallprofil gebildet wird, dessen vom verbindenden Stegteil rechtwinklig horizontal abgekantete Schenkel ins Innere der Führungsschiene 12 bzw. Laufschiene 16 geführte Schenkel durch im dargestellten Fall als in Käfigen gelagerten Rollen ausgebildete Wälzkörper jeweils längsverschieblich zur zugeordneten Schiene geführt und gehalten sind. Da es sich hierbei um eine an sich bekannte Ausgestaltung von Schubladen-Ausziehführungen handelt und die Erfindung nicht auf die im speziellen Ausführungsbeispiel dargestellte Art von Ausziehführungen beschränkt ist, wird die Ausziehführung 10 im Folgenden nicht im Einzelnen beschrieben.Figure 1 shows a right angle to the withdrawal by a pull-out guide designated in its entirety by 10 laid sectional view showing the arrangement of the guide rail 12 on the associated body support wall 14 and the Arrangement of the running rail 16 in the open bottom of a designed as a closed metallic hollow profile Drawer side wall frame 18 of the drawer 20 illustrated. The pull-out guide 10 is in the special case as Full extension trained, i. between the guide rail 12 and the slide rail 16 is still a middle rail 22nd arranged, which of a cross-sectionally U-shaped Metal profile is formed, whose from the connecting web part right angle horizontally folded leg into Interior of the guide rail 12 and track 16 guided Leg by in the illustrated case as stored in cages Rolls trained rolling elements each longitudinally displaceable guided and held to the assigned rail are. Since this is a known configuration of drawer pull-out guides and the Invention not on the particular embodiment shown type of pull-out is limited is the pull-out guide 10 will not be described in detail below.

Wesentlich ist, dass in dem durch die Zwischenschaltung der Mittelschiene 22 zwischen der Führungsschiene 12 und der Laufschiene 16 gebildeten Zwischenraum das in der Zeichnung als Quadrat dargestellte Gehäuse einer Einzugsautomatik 26 angeordnet ist, aus deren in der Figur 1 linker senkrechter Begrenzungsseite der Klinkenbauteil 28 vortritt, der funktionell dem verschwenkbaren und zusätzlich längsverschieblich im zugehörigen Gehäuse gelagerten Klinkenbauteil der eingangs erwähnten Einzugsautomatik (DE 40 20 277 C2) entspricht und mit einem von der Führungsschiene 12 in den Zwischenraum vortretenden Mitnehmer 30 zusammenwirkt. Die Einzugsautomatik 26 ihrerseits ist, wie aus der nachfolgenden Beschreibung in Verbindung mit Figur 2 noch klarer hervorgeht, an der Unterseite der Laufschiene 16 befestigt. It is essential that in by the interposition of the Middle rail 22 between the guide rail 12 and the Running rail 16 gap formed in the drawing shown as a square housing a automatic retraction 26th is arranged, from whose left in the figure 1 vertical Limiting side of the pawl member 28 vortritt, the functional the pivotable and additionally longitudinally displaceable in the associated housing mounted latch component of aforementioned automatic intake (DE 40 20 277 C2) corresponds and with one of the guide rail 12 in the Intermediate vorzuetenden driver 30 cooperates. The Automatic retraction 26, in turn, as shown in the following Description in conjunction with FIG. 2 will be made clearer, attached to the underside of the slide rail 16.

Das insgesamt langgestreckte leistenartige Gehäuse weist in seinem in Figur 2 und 3 einen als das eigentliche Klinkengehäuse 32 zu bezeichnenden Teilabschnitt auf, an welchen integral eine langgestreckte Verlängerung 34 angesetzt ist, die in einer langgestreckten oberen Aussparung einen in den Figuren 4 und 5 gesondert gezeigten Kolbendämpfer 36 aufnimmt. Der Kolbendämpfer 36 wird nachstehend in Verbindung mit den Figuren 4 und 5 noch näher beschrieben.The overall elongated strip-like housing has in his in Figure 2 and 3 as the actual jack housing 32 to be designated subsection on which integral with an elongated extension 34 is attached, in an elongated upper recess one in the Figures 4 and 5 separately shown piston damper 36 receives. The piston damper 36 will be described below with the figures 4 and 5 described in more detail.

In Figur 3 ist erkennbar, dass von der nach oben weisenden Flachseite des Gehäuses der Einzugsautomatik 26 hakenartige Vorsprünge 38 und 40 vortreten, die - gegebenenfalls im Zusmamenwirken mit weiteren geeigneten Verbindungsmitteln - eine Montage des Gehäuses an der Unterseite der Laufschiene 16 ermöglichen.In Figure 3 it can be seen that from the upwardly facing Flat side of the housing of automatic retraction 26 hook-like Projections 38 and 40 occur, the - optionally in Co-operation with other suitable lanyards - a mounting of the housing at the bottom of the track 16 allow.

Der Kolbendämpfer 36 weist ein langgestrecktes zylindrisches Gehäuse 42 auf, aus dessen dem Klinkengehäuse 32 zugewandte Abschlusswand 44 das freie Ende einer Kolbenstange 46 vortritt, welches mittels eines von einer Anflächung 48 vortretenden Zapfens 50 mit dem Klinkenbauteil 28 koppelbar ist. Die Kolbenstange trägt an ihrem gegenüberliegenden, im Innern des zylindrischen Gehäuses 42 liegenden Ende einen verschieblich im Gehäuse 42 eingepassten Kolben 52, der in einer umlaufenden Ringnut einen O-Ring 54 trägt, wobei der Kolben 52 und der O-Ring 54 in Bezug auf den lichten Innendurchmesser des Gehäuses 42 so bemessen sind, dass im Innern des am rechten Ende durch einen Gehäusestopfen 56 dicht verschlossenen Gehäuses 42 jeweils auf gegenüberliegenden Seiten des Kolbens 52 Kammern gebildet sind, aus denen die dort eingeschlossene Luft jeweils nur unter starker Drosselung zur jeweils anderen Kammer übertreten kann. Durch die Drosselung des Luftübertritts aus der einen in die andere im Zylinder gebildete Kammer kann der Kolben 52 zwar über das am Klinkenbauteil 28 angekoppelte Ende der Kolbenstange 46 im Zylinder verschoben werden, wobei durch die Drosselwirkung der in der sich jeweils verkleinernden Kammer komprimierten, in die sich vergrößernde Kammer überströmenden Luft nur eine in ihrer Verschiebungsgeschwindigkeit stark abgebremsten Verschiebung möglich ist.The piston damper 36 has an elongated cylindrical Housing 42, from which the pawl housing 32 facing End wall 44, the free end of a piston rod 46 vortritt, which by means of one of a Anflächung 48 vortretenden pin 50 with the latch member 28 coupled is. The piston rod carries on its opposite, in the Inside the cylindrical housing 42 lying end one displaceable in the housing 42 fitted piston 52, the in a circumferential annular groove carries an O-ring 54, wherein the Piston 52 and the O-ring 54 with respect to the clear inner diameter of the housing 42 are dimensioned so that in Interior of the right end by a housing plug 56th sealed housing 42 each on opposite Sides of the piston 52 chambers are formed out where the trapped air only under strong Throttling can cross to each other chamber. By throttling the air transfer from the one in the other chamber formed in the cylinder, the piston 52nd although on the coupled to the latch member 28 end of the Piston rod 46 are moved in the cylinder, with the throttling effect in each of the decreasing Chamber compressed, overflowing in the enlarging chamber Air only one in their displacement speed strongly decelerated shift is possible.

Zwischen den klinkengehäuseseitigen, vom freien Ende der Kolbenstange 40 durchsetzten Stirnwand 44 des Gehäuses 42 und den Kolben 52 ist im Gehäuseinnern eine Schraubenfeder 58 unter Druckvorspannung eingesetzt. Durch die Vorspannung der Feder 58 wird der Kolben 52 in Richtung in Anlage an den das zylindrische Gehäuse 42 verschließende Stopfen 56 vorgespannt. Durch Ausziehen des freien Endes der Kolbenstange 46 aus der Stirnwand 44 kann der Kolben 52 in Richtung zum Klinkengehäuse 32 verschoben werden, wobei die unter Druckvorspannung stehende Feder 58 unter Erhöhung ihrer Vorspannung zusätzlich zusammengedrückt wird. Die optisch nicht sichtbar im Dämpfer 36 eingesetzte Feder 58 erfüllt also hier die Funktion einer Spannfeder, welche den Klinkenbauteil 28 nach dessen Verschwenkung durch den Mitnehmer 30 beim Einschieben der Laufschiene 16 in Einschubrichtung in die in Figur 5 veranschaulichte, teilweise entspannte Endlage verschiebt und dabei die zugehörige Schublade ins Innere des zugehörigen Schrankkorpus einzieht, wobei diese Bewegung jedoch durch die bereits geschilderte Drosselung der von der einen in die andere Kammer des Dämpfers 36 überströmende Luft in ihrer Geschwindigkeit deutlich abgebremst wird. Durch den Einschluss der Feder 58 im zylindrischen Gehäuse 42 sind auch Beeinträchtigungen der Einzugsfunktion infolge des Verhakens von Federwindungen an äußeren Bauteilen ausgeschlossen. Für den Kolben 52 stellt die Feder 58 außerdem eine bei abgenommenem Verschlussstopfen 56 auch die Demontage des Kolbens und der Kolbenstange aus dem Gehäuse 42 erleichternde Rückstellfeder dar.Between the pawl housing side, from the free end of Piston rod 40 penetrated end wall 44 of the housing 42nd and the piston 52 is inside the housing a coil spring 58 used under pressure bias. By the bias the spring 58, the piston 52 in the direction of abutment the cylindrical housing 42 occluding plug 56th biased. By pulling the free end of the piston rod 46 from the end wall 44, the piston 52 in the direction be moved to the pawl housing 32, wherein the under pressure prestressing spring 58 under increasing their bias is additionally compressed. The visually not visible in the damper 36 inserted spring 58th So here fulfills the function of a tension spring, which the Pawl member 28 after its pivoting by the driver 30 during insertion of the running rail 16 in the direction of insertion in the illustrated in Figure 5, partially relaxed End position shifts while the associated drawer moves into the interior of the associated cabinet body, where this movement, however, by the already described Throttling of the one in the other chamber of the damper 36 overflowing air in their speed significantly is slowed down. By the inclusion of the spring 58 in cylindrical housing 42 are also impairments of Feeding function due to the entanglement of spring coils excluded outer components. For the piston 52 provides the spring 58 also with a removed plug 56 also the disassembly of the piston and the piston rod from the housing 42 facilitating return spring.

Die Beschreibung der auf den Bereich des Klinkengehäuses 32 beschränkte Ausgestaltung der Einzugsautomatik 26 mit der Verschwenkung und Längsverschiebung des Klinkenbauteils 28 zwischen zwei bistabilen Endlagen ist im Rahmen der vorliegenden Anmeldung nicht erforderlich, weil diese Funktion aus dem Stand der Technik, beispielsweise der eingangs erwähnten DE 40 20 277 C2, bekannt ist.The description of the on the region of the pawl housing 32nd limited embodiment of the automatic retraction 26 with the Pivoting and longitudinal displacement of the pawl member 28th between two bistable limit positions is within the scope of the present Registration not required because of this feature from the prior art, for example, the aforementioned DE 40 20 277 C2, is known.

Es ist ersichtlich, dass im Rahmen des Erfindungsgedankens Abwandlungen und Weiterbildungen des beschriebenen Ausführungsbeispiels verwirklichbar sind. So kann die Einzugsautomatik 26 grundsätzlich auch an der starr mit dem Korpus verbundenen Führungsschiene 12 angeordnet und der Mitnehmer 30 dementsprechend an der Laufschiene 16 vorgesehen sein, wobei dann natürlich die kinematisch veränderten relativen Bewegungsrichtungen berücksichtigt werden müssen.It can be seen that, within the scope of the inventive concept Modifications and developments of the described embodiment are realizable. So can the automatic intake 26 basically also at the rigid with the body connected guide rail 12 arranged and the driver 30 accordingly be provided on the running rail 16, where then of course the kinematically altered relative Movement directions must be considered.

Claims (6)

  1. Drawer pull-out guide (10) provided with an automatic retraction device and with a guide rail (12) to be fixed on a carcass wall of an item of furniture and a running rail (16) which is movably mounted relative to the guide rail (12) and to be fixed on the drawer (20) - optionally with a central rail (22) interposed - wherein a movable ratchet component (28) which is pretensioned in two end positions which are spaced from one another in the direction of movement of the drawer is provided in a ratchet housing (32) disposed on one of the two aforementioned outer rails (16, 12 respectively), the ratchet component having a receptacle for a catch (30) which is provided on the other rail (12, 16 respectively) and which moves into the receptacle as the rails move relative to each other when approaching the closed position, thereby disengaging the pretensioned movable ratchet component (28) from the associated end position so that the ratchet component moves under the effect of spring tension into the other end position and by way of the catch (30) held in the receptacle entrains the corresponding rail in the direction of retraction of the drawer, characterised in that the spring arrangement has a piston (52) disposed in an elongate cylindrical housing (42) with a piston rod (46) which is attached to the piston and projects outwards from one end of the cylindrical housing (42), that the spring (58) of the spring arrangement which pretensions the movable ratchet component (28) by way of the piston rod (46) is disposed between the piston (52) and one of the end walls (44) which at least partially close off the end face of the cylindrical housing (42), and that the housing (42) of the spring arrangement is rigidly disposed on the rail (16) which retains the movable ratchet component (28).
  2. Drawer pull-out guide with an automatic retraction device as claimed in Claim 1, characterised in that the end of the ratchet housing (32) facing the piston rod (32) which acts on the ratchet component (28) is provided with an elongate extension (34) which retains the cylindrical housing (42) which receives the pretensioned spring (58).
  3. Drawer pull-out guide with an automatic retraction device as claimed in Claim 2, characterised in that the ratchet housing (32) and the extension (34) which retains the cylindrical housing (42) is an elongate rail-like integral component.
  4. Drawer pull-out guide with an automatic retraction device as claimed in Claim 3, characterised in that the integral component is an integral plastics component.
  5. Drawer pull-out guide with an automatic retraction device as claimed in any one of Claims 1 to 4 for a full withdrawal, with a central rail (22) which is disposed between the running rail and the guide rail (16, 12 respectively) and mounted so as to be longitudinally movable relative to these rails and which retains the running rail and the guide rail with a vertical spacing from one another, characterised in that the ratchet housing (32) and the spring arrangement are disposed in the intermediate space between the running rail and the guide rail (16, 22 respectively).
  6. Drawer pull-out guide with an automatic retraction device as claimed in Claim 5, characterised in that the ratchet housing (32) which movably retains the ratchet component (28) is disposed on the running rail (16) and the catch (30) is disposed on the guide rail (12).
EP03744829A 2002-03-26 2003-03-21 Self-closing drawer runners with integrated damping Expired - Fee Related EP1487301B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20204860U DE20204860U1 (en) 2002-03-26 2002-03-26 Drawer pull-out guides with automatic retraction with integrated damping
DE20204860U 2002-03-26
PCT/EP2003/002960 WO2003079855A1 (en) 2002-03-26 2003-03-21 Self-closing drawer runners with integrated damping

Publications (2)

Publication Number Publication Date
EP1487301A1 EP1487301A1 (en) 2004-12-22
EP1487301B1 true EP1487301B1 (en) 2005-11-30

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Family Applications (1)

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EP03744829A Expired - Fee Related EP1487301B1 (en) 2002-03-26 2003-03-21 Self-closing drawer runners with integrated damping

Country Status (5)

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US (1) US7108339B2 (en)
EP (1) EP1487301B1 (en)
AT (1) ATE311131T1 (en)
DE (2) DE20204860U1 (en)
WO (1) WO2003079855A1 (en)

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Publication number Publication date
DE50301806D1 (en) 2006-01-05
US20050116593A1 (en) 2005-06-02
EP1487301A1 (en) 2004-12-22
DE20204860U1 (en) 2003-07-31
WO2003079855A1 (en) 2003-10-02
US7108339B2 (en) 2006-09-19
ATE311131T1 (en) 2005-12-15

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