EP1487301A1 - Self-closing drawer runners with integrated damping - Google Patents

Self-closing drawer runners with integrated damping

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Publication number
EP1487301A1
EP1487301A1 EP03744829A EP03744829A EP1487301A1 EP 1487301 A1 EP1487301 A1 EP 1487301A1 EP 03744829 A EP03744829 A EP 03744829A EP 03744829 A EP03744829 A EP 03744829A EP 1487301 A1 EP1487301 A1 EP 1487301A1
Authority
EP
European Patent Office
Prior art keywords
drawer
rail
housing
piston
spring
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.)
Granted
Application number
EP03744829A
Other languages
German (de)
French (fr)
Other versions
EP1487301B1 (en
Inventor
Horst Berger
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.)
Alfit AG
Original Assignee
Alfit AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alfit AG filed Critical Alfit AG
Publication of EP1487301A1 publication Critical patent/EP1487301A1/en
Application granted granted Critical
Publication of EP1487301B1 publication Critical patent/EP1487301B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/453—Actuated drawers
    • A47B88/46—Actuated drawers operated by mechanically-stored energy, e.g. by springs
    • A47B88/467—Actuated drawers operated by mechanically-stored energy, e.g. by springs self-closing
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00—General construction of drawers, guides and guide devices
    • A47B2210/0091—Drawer movement damping
    • A47B2210/0094—Drawer damping device with 2 relatively movable parts to convert kinetic energy

Definitions

  • the invention relates to a drawer pull-out guide provided with an automatic retraction mechanism, with a guide rail to be fastened to a body wall of a piece of furniture and a guide rail, optionally with the interposition of an intermediate rail, which is displaceably mounted relative to the guide rail and to be fastened to the drawer, in one on one of the two aforementioned outer rails arranged pawl housing is provided by a spring arrangement bistable in two end positions spaced from each other in the drawer movement direction movable latch component which has a receptacle for a driver provided on the other rail, which during the relative displacement of the rails when approaching retracts to the closed position in the receptacle and unlocks the pretensioned movable pawl component from the assigned end position, whereby this is moved into the other end position under the action of the spring tension and About the catch held in the receptacle in the drawer retraction direction with- takes this associated rail.
  • Drawer guides of this type (DE 4 020 277 C2), which are provided with an automatic retraction mechanism, and which hold a drawer which can be pulled out on a cabinet body during the closing movement before reaching the fully closed position Due to the resilience of a pre-tensioned spring, the drawer must inevitably be in the closed position and against accidental extension - for example, due to the reaction of the impact of the drawer panel on the cabinet body or due to air displacement inside the cabinet body when inserting or extending adjacent drawers - have been in recent years increasingly introduced. Since modern drawer pull-out guides are very easy to move due to the mounting of the rails using rolling elements or rollers, the pull-in guides used must be used
  • Preload springs must be dimensioned in such a way that the associated drawers are securely retracted even with heavy weight loads and, on the other hand, drawers with lower weight loads are not opened unintentionally, even with air currents in the body. It has now been shown that it is difficult here to optimally design the prestressing of the spring, which takes all requirements into account. As a rule, the tension of the spring is therefore measured on the safe side, which means that at least lighter drawers are accelerated on the feed path and hit the body if they are not deliberately slowed down by the person operating the drawer.
  • the invention is based on the object of creating a drawer pull-out guide with all the requirements for the closing force and the holding force in the closed position of the drawer automatic retraction, without the disadvantages of a carefully selected closing force and consequently excessive acceleration of the drawer when closing.
  • the spring arrangement has a piston arranged in an elongated cylindrical housing with a piston rod attached to the piston and led out of one end of the cylindrical housing, that between the piston and one of the end walls at least partially closing the cylindrical housing, the movable ones
  • the pawl component is arranged via the spring of the spring arrangement which prestresses the piston rod, and that the housing of the spring arrangement is rigidly arranged on the rail holding the movable pawl component.
  • a piston damper working with air or another fluid damping medium is used here, which at the same time absorbs the spring that provides the preload of the automatic feed mechanism and is thus integrated into the automatic feed mechanism.
  • the pawl housing is provided at the end facing the piston rod engaging the pawl component with an elongated extension which holds the cylindrical housing receiving the prestressed spring.
  • the pawl housing and the extension holding the cylindrical housing are then expediently designed as an elongated strip-like integral component which can be produced, for example, by an injection molding process as an integral plastic part.
  • the drawer pull-out guide provided with the automatic retraction mechanism according to the invention is provided for a full extension with a middle rail which is mounted between the running and the guide rails and is longitudinally displaceable relative to these rails and which keeps the running and the guide rails at a vertical distance from one another, it is advantageous , if the pawl housing and the spring arrangement are arranged in the space between the running and guide rails.
  • the automatic retraction with the integrated damping then disappears optically completely in the drawer pull-out guide and is largely secured against malfunctions due to the position between the rails - for example, by jamming storage items in the drawer located below in the carcass.
  • the pawl housing which movably holds the pawl component is arranged on the running rail with the integrally attached extension holding the damper and the driver on the guide rail. It is then possible to check the function of the pull-out guide without difficulty when the drawer is removed from the body.
  • Fig. 1 is a sectional view through a double-walled metal drawer side wall, which means a drawer pull-out guide designed in the manner according to the invention is held in a cabinet body so that it can be pulled out;
  • Fig. 2 is a perspective view of the in
  • Figure 1 used to store the drawer in the cabinet body drawer pull-out guide, in which the cabinet inner ends of the runner and guide rail have broken away;
  • FIG. 3 shows a perspective view of the automatic retraction mechanism with integrated damping used in the drawer pull-out guide according to FIG. 2;
  • FIG. 4 shows a perspective view of the piston damper of the automatic feed mechanism shown in FIG. 3, working as air with a damping medium, in which the coil spring is biased by a helical spring designed as a compression spring
  • Piston in the assembled state within the associated cylindrical housing enclosing end cap and a sealing ring provided on the piston are disassembled and shown lifted from the housing;
  • FIG. 5 shows the piston damper shown in FIG. 4 in the assembled state in a longitudinal central section.
  • FIG. 1 shows a sectional view at right angles to the pull-out direction through a pull-out guide designated in its entirety with 10, which shows 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 underside of a drawer side wall frame 18 of the drawer 20 designed as a closed metallic hollow profile are illustrated.
  • the pull-out guide 10 is in the special case as
  • a central rail 22 which is formed by a metal profile with a U-shaped cross section, the leg of which is bent horizontally at right angles from the connecting web part
  • the inside of the guide rail 12 or the running rail 16 are guided and held by rolling elements which are designed as rollers mounted in cages in the illustrated case and are each longitudinally displaceable to the associated rail and held. Since this is a known design of drawer pull-out guides and the invention is not limited to the type of pull-out guides shown in the specific exemplary embodiment, the pull-out guide 10 is not described in detail below.
  • an automatic feed mechanism 26 shown as a square in the drawing, is arranged, from which the latch component 28 emerges on the left-hand vertical boundary side in FIG. 1, which corresponds functionally to the pivotable and additionally longitudinally displaceable latch component in the associated housing of the automatic feed mechanism mentioned at the beginning (DE 40 20 277 C2) and interacts with a driver 30 protruding from the guide rail 12 into the intermediate space.
  • the automatic retraction mechanism 26, for its part, is attached to the underside of the running rail 16, as is clearer from the following description in connection with FIG. 2.
  • the overall elongated strip-like housing has in its part in FIGS.
  • FIGS. 4 and 5 a section to be referred to as the actual latch housing 32, to which an elongated extension 34 is integrally attached, which in an elongated upper recess has a piston damper shown separately in FIGS. 4 and 5 36 records.
  • the piston damper 36 is described in more detail below in connection with FIGS. 4 and 5.
  • hook-like projections 38 and 40 protrude from the upward-facing flat side of the housing of the automatic feed mechanism 26, which - if necessary in cooperation with other suitable connecting means - enable the housing to be mounted on the underside of the running rail 16.
  • the piston damper 36 has an elongated cylindrical housing 42, from the end wall 44 of which faces the pawl housing 32 the free end of a piston rod 46 emerges, which can be coupled to the pawl component 28 by means of a pin 50 protruding from a surface 48.
  • the piston rod carries a piston 52 which is displaceably fitted in the housing 42 and which carries an O-ring 54 in a circumferential annular groove, the piston 52 and the O-ring 54 with respect to the
  • the inside diameter of the housing 42 is dimensioned such that in the interior of the housing 42, which is sealed at the right end by a housing plug 56, chambers are formed on opposite sides of the piston 52, from which the air trapped there is in each case only subjected to severe throttling other chamber can cross.
  • Piston rod 46 can be moved in the cylinder, with the throttling effect reducing in size Chamber compressed air flowing into the enlarging chamber is only a displacement slowed down in its displacement speed is possible.
  • a helical spring 58 is inserted in the interior of the housing under pressure.
  • the prestress of the spring 58 biases the piston 52 in the direction of contact with the stopper 56 closing the cylindrical housing 42.
  • the spring 58 inserted visually in the damper 36 thus fulfills the function of a tension spring which, after it has been pivoted by the driver 30 when the running rail 16 is inserted, pushes the pawl component 28 in the direction of insertion into the partially relaxed end position illustrated in FIG. 5 and the associated drawer moves into the interior of the associated cabinet body, but this movement is significantly slowed down in its speed by the throttling of the air flowing from one chamber to the other in the damper 36, as already described.
  • the inclusion of the spring 58 in the cylindrical housing 42 also prevents impairment of the pull-in function due to the interlocking of spring windings on external components.
  • the spring 58 also represents a return spring which also simplifies the disassembly of the piston and the piston rod from the housing 42 when the sealing plug 56 is removed.
  • the automatic retraction mechanism 26 can in principle also be arranged on the guide rail 12 rigidly connected to the body and the driver 30 can accordingly be provided on the running rail 16, in which case, of course, the kinematically changed relative directions of movement must then be taken into account.

Landscapes

  • 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

Schubladen-Ausziehführungen mit Einzugsautomatik mit integrierter Dämpfung Drawer pull-out guides with automatic retraction with integrated damping
Die Erfindung betrifft eine mit einer Einzugsautomatik versehene Schubladen-Ausziehführung mit einer an einer Korpus- wand eines Möbelstücks zu befestigenden Führungsschiene und einer - gegebenenfalls unter Zwischenschaltung einer it- telschiene - 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 mit- nimmt.The invention relates to a drawer pull-out guide provided with an automatic retraction mechanism, with a guide rail to be fastened to a body wall of a piece of furniture and a guide rail, optionally with the interposition of an intermediate rail, which is displaceably mounted relative to the guide rail and to be fastened to the drawer, in one on one of the two aforementioned outer rails arranged pawl housing is provided by a spring arrangement bistable in two end positions spaced from each other in the drawer movement direction movable latch component which has a receptacle for a driver provided on the other rail, which during the relative displacement of the rails when approaching retracts to the closed position in the receptacle and unlocks the pretensioned movable pawl component from the assigned end position, whereby this is moved into the other end position under the action of the spring tension and About the catch held in the receptacle in the drawer retraction direction with- takes this associated rail.
Mit einer Einzugsautomatik versehene Schubladen-Führungen dieser Art (DE 4 020 277 C2) , welche eine an einem Schrankkorpus ausziehbar gehalterte Schublade bei der Schließbewe- gung 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 verwendetenDrawer guides of this type (DE 4 020 277 C2), which are provided with an automatic retraction mechanism, and which hold a drawer which can be pulled out on a cabinet body during the closing movement before reaching the fully closed position Due to the resilience of a pre-tensioned spring, the drawer must inevitably be in the closed position and against accidental extension - for example, due to the reaction of the impact of the drawer panel on the cabinet body or due to air displacement inside the cabinet body when inserting or extending adjacent drawers - have been in recent years increasingly introduced. Since modern drawer pull-out guides are very easy to move due to the mounting of the rails using rolling elements or rollers, the pull-in guides used must be used
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 Kor- pus 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 be- messene 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 zumin- dest Teile der Dämpfer bei geöffneten Schubladen sichtbar, was optisch unbefriedigend ist und die zusätzliche Gefahr des Hängenbleibens von in der Schublade enthaltenem Aufbewahrungsgut birgt .Preload springs must be dimensioned in such a way that the associated drawers are securely retracted even with heavy weight loads and, on the other hand, drawers with lower weight loads are not opened unintentionally, even with air currents in the body. It has now been shown that it is difficult here to optimally design the prestressing of the spring, which takes all requirements into account. As a rule, the tension of the spring is therefore measured on the safe side, which means that at least lighter drawers are accelerated on the feed path and hit the body if they are not deliberately slowed down by the person operating the drawer. This sudden slamming or snapping has been criticized by many furniture buyers, so that in recent years the furniture manufacturers have started to additionally provide vapors that become effective during the automatic pulling-in process between the drawer and the cabinet body, which prevent the drawer from being even with a relatively high level Prestressed springs of the automatic feed system can be accelerated to an excessive extent. The use of such additional dampers represents an additional constructive and - due to the additional assembly work required - manufacturing outlay. In addition, at least parts of the dampers are visible when the drawers are open, which is optically unsatisfactory and the additional risk of stuck items in the drawer.
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 of creating a drawer pull-out guide with all the requirements for the closing force and the holding force in the closed position of the drawer automatic retraction, without the disadvantages of a carefully selected closing force and consequently excessive acceleration of the drawer when closing.
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 beweglichenStarting from a drawer pull-out guide of the type mentioned at the outset, this object is achieved according to the invention in that the spring arrangement has a piston arranged in an elongated cylindrical housing with a piston rod attached to the piston and led out of one end of the cylindrical housing, that between the piston and one of the end walls at least partially closing the cylindrical housing, the movable ones
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 Einzugs- automatik integriert ist .The pawl component is arranged via the spring of the spring arrangement which prestresses the piston rod, and that the housing of the spring arrangement is rigidly arranged on the rail holding the movable pawl component. According to the invention, a piston damper working with air or another fluid damping medium is used here, which at the same time absorbs the spring that provides the preload of the automatic feed mechanism and is thus integrated into the automatic feed mechanism.
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 auf- nehmende zylindrische Gehäuse haltert . 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 Kunststoff- teil hergestellt werden kann.In a preferred embodiment of the invention, the pawl housing is provided at the end facing the piston rod engaging the pawl component with an elongated extension which holds the cylindrical housing receiving the prestressed spring. The pawl housing and the extension holding the cylindrical housing are then expediently designed as an elongated strip-like integral component which can be produced, for example, by an injection molding process as an integral plastic part.
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 Führungs- schiene 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 Kor- pus darunter angeordneten Schublade - weitestgehend gesichert .If the drawer pull-out guide provided with the automatic retraction mechanism according to the invention is provided for a full extension with a middle rail which is mounted between the running and the guide rails and is longitudinally displaceable relative to these rails and which keeps the running and the guide rails at a vertical distance from one another, it is advantageous , if the pawl housing and the spring arrangement are arranged in the space between the running and guide rails. The automatic retraction with the integrated damping then disappears optically completely in the drawer pull-out guide and is largely secured against malfunctions due to the position between the rails - for example, by jamming storage items in the drawer located below in the carcass.
Dabei ist es dann zweckmäßig, wenn das den Klinkenbauteil beweglich halternde Klinkengehäuse mit der integral ange- setzten, 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 expedient if the pawl housing which movably holds the pawl component is arranged on the running rail with the integrally attached extension holding the damper and the driver on the guide rail. It is then possible to check the function of the pull-out guide without difficulty when the drawer is removed from the body.
Die Erfindung ist in der folgenden Beschreibung eines Aus- führungsbeispiels in Verbindung mit der Zeichnung näher erläutert, und zwar zeigt:The invention is explained in more detail in the following description of an exemplary embodiment in conjunction with the drawing, which shows:
Fig. 1 eine Schnittansicht durch eine als doppelwandige Metallzarge ausgebildeten Schubladen-Seitenwand, die mittels einer in der erfindungsgemäßen Weise ausgebildeten Schubladen-Ausziehfüh- rung in einem Schrankkorpus ausziehbar gehaltert ist;Fig. 1 is a sectional view through a double-walled metal drawer side wall, which means a drawer pull-out guide designed in the manner according to the invention is held in a cabinet body so that it can be pulled out;
Fig. 2 eine perspektivische Ansicht der inFig. 2 is a perspective view of the in
Figur 1 zur Lagerung der Schublade im Schrankkorpus verwendeten Schubladen- Ausziehführung, bei welcher die schrankinneren Enden der Lauf- und Führungsschiene weggebrochen sind;Figure 1 used to store the drawer in the cabinet body drawer pull-out guide, in which the cabinet inner ends of the runner and guide rail have broken away;
Fig. 3 eine perspektivische Ansicht der bei der Schubladen-Ausziehführung gemäß Figur 2 verwendeten Einzugsautomatik mit integrierter Dämpfung;3 shows a perspective view of the automatic retraction mechanism with integrated damping used in the drawer pull-out guide according to FIG. 2;
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 aus- gebildete Schraubenfeder vorgespannten4 shows a perspective view of the piston damper of the automatic feed mechanism shown in FIG. 3, working as air with a damping medium, in which the coil spring is biased by a helical spring designed as a compression spring
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; undPiston in the assembled state within the associated cylindrical housing enclosing end cap and a sealing ring provided on the piston are disassembled and shown lifted from the housing; and
Fig. 5 den in Figur 4 gezeigten Kolbendämpfer in montiertem Zustand in einem Längs - mittelschnitt .5 shows the piston damper shown in FIG. 4 in the assembled state in a longitudinal central section.
Figur 1 zeigt eine rechtwinklig zur Ausziehrichtung durch eine in ihrer Gesamtheit mit 10 bezeichnete Ausziehführung gelegte Schnittansicht, welche die Anordnung der Führungs- schiene 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 veranschau- licht . Die Ausziehführung 10 ist im speziellen Fall alsFIG. 1 shows a sectional view at right angles to the pull-out direction through a pull-out guide designated in its entirety with 10, which shows 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 underside of a drawer side wall frame 18 of the drawer 20 designed as a closed metallic hollow profile are illustrated. The pull-out guide 10 is in the special case as
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 Steg- teil rechtwinklig horizontal abgekantete Schenkel insFull extension, i.e. Between the guide rail 12 and the running rail 16 there is also a central rail 22 which is formed by a metal profile with a U-shaped cross section, the leg of which is bent horizontally at right angles from the connecting web part
Innere der Führungsschiene 12 bzw. Laufschiene 16 geführte Schenkel durch im dargestellten Fall als in Käfigen gelagerten Rollen ausgebildete Wälzkörper jeweils längsver- schieblich 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 be- schrieben.The inside of the guide rail 12 or the running rail 16 are guided and held by rolling elements which are designed as rollers mounted in cages in the illustrated case and are each longitudinally displaceable to the associated rail and held. Since this is a known design of drawer pull-out guides and the invention is not limited to the type of pull-out guides shown in the specific exemplary embodiment, the pull-out guide 10 is not 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 funktioneil dem verschwenkbaren und zusätzlich längsverschieb- lich 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 her- vorgeht, an der Unterseite der Laufschiene 16 befestigt. 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.It is essential that in the space formed by the interposition of the middle rail 22 between the guide rail 12 and the running rail 16, the housing of an automatic feed mechanism 26, shown as a square in the drawing, is arranged, from which the latch component 28 emerges on the left-hand vertical boundary side in FIG. 1, which corresponds functionally to the pivotable and additionally longitudinally displaceable latch component in the associated housing of the automatic feed mechanism mentioned at the beginning (DE 40 20 277 C2) and interacts with a driver 30 protruding from the guide rail 12 into the intermediate space. The automatic retraction mechanism 26, for its part, is attached to the underside of the running rail 16, as is clearer from the following description in connection with FIG. 2. The overall elongated strip-like housing has in its part in FIGS. 2 and 3 a section to be referred to as the actual latch housing 32, to which an elongated extension 34 is integrally attached, which in an elongated upper recess has a piston damper shown separately in FIGS. 4 and 5 36 records. The piston damper 36 is described in more detail below in connection with FIGS. 4 and 5.
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 FIG. 3 it can be seen that hook-like projections 38 and 40 protrude from the upward-facing flat side of the housing of the automatic feed mechanism 26, which - if necessary in cooperation with other suitable connecting means - enable the housing to be mounted on the underside of the running rail 16.
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 gegenüberlie- genden 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 derThe piston damper 36 has an elongated cylindrical housing 42, from the end wall 44 of which faces the pawl housing 32 the free end of a piston rod 46 emerges, which can be coupled to the pawl component 28 by means of a pin 50 protruding from a surface 48. At its opposite end, which is located inside the cylindrical housing 42, the piston rod carries a piston 52 which is displaceably fitted in the housing 42 and which carries an O-ring 54 in a circumferential annular groove, the piston 52 and the O-ring 54 with respect to the The inside diameter of the housing 42 is dimensioned such that in the interior of the housing 42, which is sealed at the right end by a housing plug 56, chambers are formed on opposite sides of the piston 52, from which the air trapped there is in each case only subjected to severe throttling other chamber can cross. By throttling the passage of air from one chamber into the other formed in the cylinder, the piston 52 can admittedly via the end coupled to the pawl component 28
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.Piston rod 46 can be moved in the cylinder, with the throttling effect reducing in size Chamber compressed air flowing into the enlarging chamber is only a displacement slowed down in its displacement speed 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 Einschub- richtung 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 Dämp- fers 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 end wall 44 of the housing 42, which is penetrated by the free end of the piston rod 40, and the piston 52, a helical spring 58 is inserted in the interior of the housing under pressure. The prestress of the spring 58 biases the piston 52 in the direction of contact with the stopper 56 closing the cylindrical housing 42. By pulling the free end of the piston rod 46 out of the end wall 44, the piston 52 can be displaced in the direction of the pawl housing 32, the spring 58, which is under compressive prestress, being additionally compressed while increasing its prestress. The spring 58 inserted visually in the damper 36 thus fulfills the function of a tension spring which, after it has been pivoted by the driver 30 when the running rail 16 is inserted, pushes the pawl component 28 in the direction of insertion into the partially relaxed end position illustrated in FIG. 5 and the associated drawer moves into the interior of the associated cabinet body, but this movement is significantly slowed down in its speed by the throttling of the air flowing from one chamber to the other in the damper 36, as already described. The inclusion of the spring 58 in the cylindrical housing 42 also prevents impairment of the pull-in function due to the interlocking of spring windings on external components. For the piston 52, the spring 58 also represents a return spring which also simplifies the disassembly of the piston and the piston rod from the housing 42 when the sealing plug 56 is removed.
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 vorlie- genden 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 configuration of the automatic feed mechanism 26 with the pivoting and longitudinal displacement of the latch component 28 between two bistable end positions is limited to the area of the latch housing 32 within the scope of the present not necessary registration because this function is known from the prior art, for example the aforementioned DE 40 20 277 C2.
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 modifications and developments of the described exemplary embodiment can be implemented within the scope of the inventive concept. The automatic retraction mechanism 26 can in principle also be arranged on the guide rail 12 rigidly connected to the body and the driver 30 can accordingly be provided on the running rail 16, in which case, of course, the kinematically changed relative directions of movement must then be taken into account.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Mit einer Einzugsautomatik versehene Schubladen-Ausziehführung (10) mit einer an einer Korpuswand (14) eines Möbelstücks zu befestigenden Führungsschiene (12) und einer - gegebenenfalls unter Zwischenschaltung einer Mittelschiene (22) - relativ zur Führungsschiene (12) verschieblich gelagerten, an der Schublade (20) zu befestigenden Laufschiene (16), wobei in einem an einer der beiden vorgenannten äußeren Schienen (16 bzw. 12) angeordneten Klinkengehäuse (32) ein durch eine Federanordnung bistabil in zwei in Schubladen-Bewegungsrich- tung voneinander beabstandete Endlagen vorgespannter beweglicher Klinkenbauteil (28) vorgesehen ist, welcher eine Aufnahme für einen an der anderen Schiene (12 bzw. 16) vorgesehenen Mitnehmer (30) aufweist, welcher bei der Relativverschiebung der Schienen bei Annäherung an die Schließstellung in die Aufnahme einfährt und den vorgespannten beweglichen Klinkenbauteil (28) 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 (30) die dieser zugeordnete Schiene in Schubladen-Einzugsrichtung mitnimmt, d a d u r c h g e k e n n z e i c h n e t , dass die Federanordnung einen in einem langgestreckten zylindrischen Gehäuse (42) angeordneten Kolben (52) mit einer am Kolben angesetzten und aus einem Ende des zylindrischen Gehäuses (42) herausgeführten Kolbenstange (46) aufweist, dass zwischen dem Kolben (52) und einer der das zylindrische Gehäuse (42) stirnseitig zumindest teilweise verschließenden Stirnwände (44) die den beweglichen1. With an automatic retraction provided drawer pull-out guide (10) with a to be attached to a body wall (14) of a piece of furniture guide rail (12) and - optionally with the interposition of a middle rail (22) - slidably mounted relative to the guide rail (12) The slide rail (16) to be fastened to the drawer (20), a latch arrangement (32), which is arranged on one of the two aforementioned outer rails (16 or 12), being bistably prestressed in two end positions spaced apart from one another in the direction of movement of the drawer by a spring arrangement Movable latch component (28) is provided, which has a receptacle for a driver (30) provided on the other rail (12 or 16), which moves into the receptacle when the rails move relative to the closed position and the preloaded movable latch component (28) unlocked from the assigned end position, whereby this under de r spring tension is moved into the other end position and, via the driver (30) held in the receptacle, takes the rail assigned to it in the drawer-pulling direction, characterized in that the spring arrangement has a piston (52) arranged in an elongated cylindrical housing (42) with a Has a piston rod (46) attached to the piston and led out of one end of the cylindrical housing (42), that between the piston (52) and one of the end walls (44) at least partially closing the cylindrical housing (42) on the front side, the movable
Klinkenbauteil (28) über die Kolbenstange (46) vorspannende Feder (58) der Federanordnung angeordnet ist, und dass das Gehäuse (42) der Federanordnung starr an der den beweglichen Klinkenbauteil (28) halternden Schiene (16) angeordnet ist.Pawl component (28) via the piston rod (46) biasing spring (58) of the spring arrangement is arranged, and that the housing (42) of the spring arrangement is arranged rigidly on the rail (16) holding the movable latch component (28).
2. Schubladen-Ausziehführung mit Einzugsautomtik nach2. Drawer pull-out guide with automatic retraction
Anspruch 1, dadurch gekennzeichnet, dass das Klinkengehäuse (32) an dem der am Klinkenbauteil (28) angreifenden Kolbenstange (32) zugewandten Ende mit einer langgestreckten Verlängerung (34) versehen ist, welche das die vorgespannte Feder (58) aufnehmende zylindrische Gehäuse (42) haltert .Claim 1, characterized in that the pawl housing (32) is provided at the end facing the piston rod (32) engaging the pawl component (28) with an elongated extension (34) which accommodates the cylindrical housing (42) receiving the prestressed spring (58) ) holds.
3. Schubladen-Ausziehführung mit Einzugsautomatik nach Anspruch 2, dadurch gekennzeichnet, dass das Klinken- gehäuse (32) und die das zylindrische Gehäuse (42) haltende Verlängerung (34) ein langgestreckter leistenartiger integraler Bauteil ist .3. Drawer pull-out guide with automatic retraction according to claim 2, characterized in that the latch housing (32) and the extension (34) holding the cylindrical housing (42) is an elongated strip-like integral component.
4. Schubladen-Ausziehführung mit Einzugsautomatik nach Anspruch 3, dadurch gekennzeichnet, dass der integrale4. drawer pull-out guide with automatic feeder according to claim 3, characterized in that the integral
Bauteil ein integraler Kunststoffteil ist .Component is an integral plastic part.
5. Schubladen-Ausziehführung mit Einzugsautomatik nach einem der Ansprüche 1 bis 4 für einen Vollauszug mit einer zwischen der Lauf- und der Führungsschiene (16 zw. 12) vorgesehenen, relativ zu diesen Schienen längsverschieb- lich gelagerten und die Lauf- und die Führungsschiene mit senkrechtem Abstand zueinander halternden Mittelschiene (22), dadurch gekennzeichnet, dass das Klinken- gehäuse (32) und die Federanordnung im Zwischenraum zwischen der Lauf- und der Führungsschiene (16 bzw. 22) angeordnet sind.5. Drawer pull-out guide with automatic retraction according to one of claims 1 to 4 for a full extension with a between the running and the guide rail (16 and 12) provided, longitudinally displaceable relative to these rails and the running and the guide rail with perpendicular spacing to each other middle rail (22), characterized in that the pawl housing (32) and the spring arrangement are arranged in the space between the running and the guide rail (16 and 22).
6. Schubladen-Ausziehführung mit Einzugsautomatik nach Anspruch 5, dadurch gekennzeichnet, dass das den Klinkenbauteil (28) beweglich halternde Klinkengehäuse (32) an der Laufschiene (16) und der Mitnehmer (30) an der Führungsschiene (12) angeordnet ist. 6. drawer pull-out guide with automatic retraction according to claim 5, characterized in that the latch component (28) movably holding latch housing (32) is arranged on the running rail (16) and the driver (30) 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)

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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

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AT (1) ATE311131T1 (en)
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EP1487301B1 (en) 2005-11-30
US20050116593A1 (en) 2005-06-02
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WO2003079855A1 (en) 2003-10-02
US7108339B2 (en) 2006-09-19
ATE311131T1 (en) 2005-12-15

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