EP3439505B1 - Furniture drive - Google Patents

Furniture drive Download PDF

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Publication number
EP3439505B1
EP3439505B1 EP17706403.7A EP17706403A EP3439505B1 EP 3439505 B1 EP3439505 B1 EP 3439505B1 EP 17706403 A EP17706403 A EP 17706403A EP 3439505 B1 EP3439505 B1 EP 3439505B1
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EP
European Patent Office
Prior art keywords
ram
furniture drive
entrainment member
holding device
drive according
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
EP17706403.7A
Other languages
German (de)
French (fr)
Other versions
EP3439505A2 (en
Inventor
Christof GÖTZ
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.)
Julius Blum GmbH
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Julius Blum GmbH
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Publication date
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Publication of EP3439505A2 publication Critical patent/EP3439505A2/en
Application granted granted Critical
Publication of EP3439505B1 publication Critical patent/EP3439505B1/en
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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
    • 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
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/473—Braking devices, e.g. linear or rotational dampers or friction brakes; Buffers; End 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
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/16—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for sliding wings
    • 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
    • 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
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/20—Combinations of elements
    • E05Y2800/23—Combinations of elements of elements of different categories
    • E05Y2800/24—Combinations of elements of elements of different categories of springs and 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
    • 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 invention relates to a drawer extension with a furniture drive of the type to be described.
  • U1 discloses a closing and pulling-in device for drawers, a driver which can be coupled to the drawer being releasably coupled to a ball head of a coupling rod.
  • the ball head of the coupling rod engages in a receptacle of the driver, the driver's receptacle elastically expanding upon the action of a tensile force exerted on the drawer and thus releasing the ball head in the event of an overload.
  • Sufficient space is available for this overload clutch, however, because the driver moves in the pull-out direction in the event of an excessive pulling movement on the drawer, thus increasing the distance between the driver and the coupling rod.
  • U1 discloses a closing and / or retraction device for movable furniture parts, with a spring-loaded movable slide which carries a driver, and with a fluid damper which dampens the retraction movement of the slide and which has a cylinder with a piston which can be moved linearly therein.
  • the object of the present invention is to propose a furniture drive of the type mentioned at the outset, wherein damage to the furniture drive, in particular the damping device, can be prevented in the event of an overload.
  • the plunger can be moved through an opening of the holding device when force exerted on the driver acting in the pulling-in direction is exceeded and the driver can thus be decoupled from the plunger.
  • the holding device is designed as a linearly effective overload clutch, which causes decoupling between the driver and the plunger above a force exerted on the driver in the pull-in direction (ie if the movable furniture part is catapulted with excessive manual force or force in the closing direction), so that the plunger moves through such an excessive force on the driver through an opening of the holding device and there is a continuous, non-destructive translational movement of the plunger relative to the driver.
  • the risk of damage in particular bursting of the damper housing and leakage of a damping medium due to excessive pressurization
  • the plunger can be moved through a further opening of the holding device even when the force exerted on the driver counter to the pulling-in direction is exceeded, and the driver can thus be decoupled from the plunger.
  • a decoupling of the ram from the driver can be brought about both in the event of an overload acting in the pull-in direction and in the pull-out direction of the driver.
  • the holding device can have at least one holding element which, relative to the plunger, acts on the driver below a predetermined force Holding device holds and which allows a non-destructive translatory movement of the plunger relative to the driver above a predetermined force on the driver. It can be provided that the at least one holding element is acted upon by an energy store.
  • This energy accumulator can be formed, for example, by a mechanical spring element or alternatively also by an inherent elasticity of the holding element.
  • the drawer pull-out guide comprises a body rail to be fastened to a furniture body and at least one pull-out rail which is mounted so as to be movable relative to the body rail between a closed position and an open position, and a furniture drive in question for pulling the pull-out rail into the closed position.
  • Fig. 1 shows a piece of furniture 1 with a cabinet-shaped furniture body 2, movable furniture parts 3 in the form of drawers being mounted so as to be movable relative to the furniture body 2 via drawer pull-out guides 4.
  • the drawers each have one Front panel 5, a drawer bottom 6, drawer side walls 7 and a rear wall 8.
  • the drawer pull-out guides 4 each comprise a body rail 9 which is to be fastened to the furniture body 2 via fastening sections 12a, 12b, at least one pull-out rail 10 which is displaceably mounted relative to the body rail 9 and which is to be connected to the drawer side wall 7, and optionally a middle rail 11 which is used for Realization of a full extension of the drawer between the body rail 9 and the pull-out rail 10 is movably mounted.
  • the drawer pull-out guide 4 has a furniture drive 13, through which the pull-out rail 10 towards the end of the closing movement by the force of a spring device 17 ( Fig. 2 ) retracted and this spring-assisted retraction movement is braked by a damping device 19 of the furniture drive 13.
  • Fig. 2 shows an embodiment of a furniture drive 13 in an exploded view.
  • the furniture drive 13 has a housing 18, a driver 14 which can be pivoted about an articulation axis 15 for releasable coupling to the movable furniture part 3 along a linear travel path 31a (running in a longitudinal direction (L) of the housing 18).
  • Fig. 3a is slidably mounted.
  • a spring device 17 preferably with at least one tension spring
  • the driver 14 or the movable furniture part 3 coupled therewith can be pulled in in the pull-in direction 22.
  • the spring device 17 has a first fastening point 17a, which is connected in the assembled position to a stationary bearing part 23, the second fastening point 17b of the spring device 17 is connected to a bearing 16b of a holding device 16, which is connected to the driver 14 via the hinge axis 15.
  • the holding device 16 has at least one guide element 33, by means of which the holding device 16 together with the driver 14 is displaceably mounted relative to the housing 18 along a guide track 18a.
  • a damping device 19 in the form of a linear damper with a fluid chamber 20 and a plunger 21 movable in relation to it in the form of a piston rod is provided for damping the spring-assisted pull-in movement of the driver 14 in the pull-in direction 22.
  • the fluid chamber 20 is formed in a fluid cylinder which, in the installed position, also has one end connected to the bearing part 23.
  • the arranged between the plunger 21 and the driver 14 Holding device 16 is provided for releasably holding the plunger 21 relative to the driver 14, so that the plunger 21 can be moved through an opening 24 of the holding device 16 when force exerted on the driver 14 in the pull-in direction 22 and the driver 14 can thus be decoupled from the plunger 21 .
  • the holding device 16 has two holding elements 28a and 28b, which delimit a receiving chamber 26 for receiving a coupling piece 29 of the plunger 21.
  • the coupling piece 29 of the plunger 21 is held in position in the receiving chamber 26 by means of an energy accumulator 30, which in the exemplary embodiment shown is designed as a spring clip made of spring steel encompassing the two holding elements 28a, 28b.
  • the coupling piece 29 arranged or formed on the tappet 21 has a larger diameter than the tappet 21, the coupling piece 29 being held in this receiving chamber 26 of the holding device 16 in normal operation (ie below a predetermined application of force on the driver 14) and thus the coupling between the holding device 16 and the plunger 21 is guaranteed.
  • the coupling piece 29 of the plunger 21 can move through an opening 24 of the holding device 16, so that the driver 14 can be decoupled from the plunger 21.
  • the coupling piece 29 can move into an escape channel 27 of the holding device 16 when a force acting on the driver 14 acting in the drawing-in direction 22 is exceeded, a longitudinal direction of the escape channel 27 running coaxially with a longitudinal direction of the plunger 21.
  • This escape channel 27 is, however, not absolutely necessary, for example it would also suffice to let the coupling piece 29 of the plunger 21, starting from the receiving chamber 26, move into a space that is present on the side next to the receiving chamber 26.
  • the coupling piece 29 of the tappet 21 can move through a further opening 25 of the holding device 16, so that the driver 14 can be decoupled from the tappet 21.
  • the coupling piece 29 moves out of the receiving chamber 26 into a space to the side of the receiving chamber 26 and then increases its distance from the holding device 16.
  • Fig. 3a shows the furniture drive 13 in a side view, the driver 14 mounted in the housing 18 being identified by a dashed line.
  • the housing 18 has a linear travel path 31a for the movable mounting of the driver 14, with a bend 31b adjoining the linear travel path 31a, which bend is provided for releasably locking the driver 14 in a prestressed parking position.
  • the driver 14 is thus mounted between the shown parking position, in which the spring device 17 is tensioned, and a retracted end position, in which the spring device 17 is largely relaxed, along the linear travel path 31a.
  • the driver 14 comprises a guide pin 14a, through which the driver 14 is slidably guided along the bend 31b and along the linear travel path 31a.
  • the driver 14 is provided for releasable coupling with the movable furniture part 3 with a notch 32, which can be detachably coupled to a coupling pin arranged on the movable furniture part 3.
  • this coupling pin moves into the notch 32, so that the driver 14 tilts out of the park position shown and is drawn in by the force of the relaxing spring device 17 in the pull-in direction 22.
  • the driver 14 is pivotally connected to the holding device 16 via the hinge axis 15, a guide element 33 arranged on the holding device 16 being slidably mounted along a guide 18a of the housing 18.
  • a damping device 19 is provided with a fluid chamber 20, the plunger 21 moving into the fluid chamber 20 when the driver 14 moves in the direction of pull-in 22, and the movement of the driver 14 is braked by a damping fluid located in the fluid chamber 20. If a force exerted on the driver 14 acting in the feed direction 22 is exceeded, the tappet 21 is opened through an opening 24 ( Fig. 2 ) moves through and can enter the escape channel 27, so that the driver 14 is decoupled from the plunger 21. If a force exerted against the pull-in direction 22 on the driver 14 is exceeded, the coupling piece 22 of the plunger 21 is passed through a further opening 25 ( Fig.
  • Fig. 3b shows the in Fig. 3a furniture drive 13 shown in a perspective view.
  • Fig. 4a shows the furniture drive 13 in a side view, the plunger 21 being decoupled from the driver 14 by exceeding a force exerted in the pull-in direction 22. Because of this excessive application of force on the driver 14 in the feed direction 22, the coupling piece 29 of the tappet 21 was forced out of the receiving chamber 26 through the opening 24 into the escape channel 27 of the holding device 16, so that the driver 14 without any further relative movement between the tappet 21 and Fluid chamber 20 can be moved further in the feed direction 22. The coupling piece 29 of the plunger 21 can be coupled again to the receiving chamber 26 of the holding device 16 by a manual pulling movement onto the movable furniture part 3.
  • Fig. 4b shows the in Figure 4a circled area in an enlarged view.
  • Fig. 5a shows the furniture drive 13 in a side view, the plunger 21 being decoupled from the driver 14 by exceeding a force exerted counter to the pull-in direction 22.
  • the coupling piece 29 of the plunger 21 was moved starting from the receiving chamber 26 through the further opening 25 into a free space to the side of the receiving chamber 26, so that the driver 14 without any further relative movement between plunger 21 and fluid chamber 20 can be moved further against the feed direction 22 (ie in the direction of the parking position).
  • the coupling piece 29 of the plunger 21 can be coupled again to the receiving chamber 26 of the holding device 16.
  • Fig. 5b shows the in Figure 5a circled area in an enlarged view
  • the two holding elements 28a, 28b are acted upon by an energy accumulator 30, this energy accumulator 30 being actuated by a mechanical one Spring element or can also be formed by an inherent elasticity of the holding elements 28a, 28b.
  • the holding elements 28a, 28b are designed to be deformable or bendable above a predetermined force acting on the driver 14 in a direction running transversely to the longitudinal direction of the tappet 21, so that the driver 14 can be decoupled from the tappet 21. It is also possible to make the elastic prestressing of the holding elements 28a, 28b adjustable in the direction of the coupling piece 29. This can be done, for example, by means of an adjusting screw (not shown here), the prestress of the energy accumulator 30 and thus the triggering force of the holding elements 28a, 28b being adjustable by rotating the adjusting screw.
  • the damping device 19 has a piston rod that is displaceable relative to the fluid chamber 20, the plunger 21 being formed by the piston rod.
  • the fluid chamber 20 i.e. the damping cylinder
  • the plunger 21 is formed by the damping cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drawers Of Furniture (AREA)
  • Vibration Prevention Devices (AREA)
  • Vibration Dampers (AREA)
  • Fluid-Damping Devices (AREA)

Description

Die vorliegende Erfindung bezieht sich auf einen Möbelantrieb zum Einziehen eines bewegbar gelagerten Möbelteiles in eine geschlossene Endlage relativ zu einem Möbelkorpus, umfassend:

  • einen Mitnehmer zum Einziehen des bewegbaren Möbelteiles, wobei der Mitnehmer zumindest abschnittsweise entlang eines linearen Verfahrweges verfahrbar gelagert ist und welcher mit dem bewegbaren Möbelteil lösbar koppelbar ist,
  • eine Federvorrichtung zur Kraftbeaufschlagung des Mitnehmers in eine Einzugsrichtung,
  • eine Dämpfvorrichtung zum Dämpfen einer Bewegung des Mitnehmers in Einzugsrichtung, wobei die Dämpfvorrichtung eine Fluidkammer und einen relativ zur Fluidkammer verschiebbar gelagerten Stößel aufweist,
  • eine Haltevorrichtung, welche zwischen dem Stößel und dem Mitnehmer angeordnet ist, wobei die Haltevorrichtung den Stößel relativ zum Mitnehmer hält.
The present invention relates to a furniture drive for pulling a movably mounted furniture part into a closed end position relative to a furniture body, comprising:
  • a driver for pulling in the movable furniture part, the driver being mounted so as to be movable at least in sections along a linear travel path and which can be detachably coupled to the movable furniture part,
  • a spring device for applying force to the driver in a feed direction,
  • a damping device for damping a movement of the driver in the drawing-in direction, the damping device having a fluid chamber and a plunger which is displaceably mounted relative to the fluid chamber,
  • a holding device which is arranged between the tappet and the driver, the holding device holding the tappet relative to the driver.

Im Weiteren betrifft die Erfindung eine Schubladenausziehführung mit einem Möbelantrieb der zu beschreibenden Art.Furthermore, the invention relates to a drawer extension with a furniture drive of the type to be described.

In der DE 20 2005 009 860 U1 ist eine Schließ- und Einzugsvorrichtung für Schubladen offenbart, wobei ein mit der Schublade koppelbarer Mitnehmer mit einem Kugelkopf einer Koppelstange lösbar gekoppelt ist. Der Kugelkopf der Koppelstange greift dabei in eine Aufnahme des Mitnehmers ein, wobei sich die Aufnahme des Mitnehmers bei Einwirkung einer auf die Schublade ausgeübten Zugkraft elastisch aufweitet und damit den Kugelkopf in einem Überlastfall freigibt. Für diese Überlastkupplung steht allerdings ausreichend Raum zur Verfügung, weil der Mitnehmer bei einer übermäßigen Zugbewegung auf die Schublade in Ausziehrichtung bewegt und sich somit der Abstand zwischen dem Mitnehmer und der Koppelstange vergrößert.In the DE 20 2005 009 860 U1 discloses a closing and pulling-in device for drawers, a driver which can be coupled to the drawer being releasably coupled to a ball head of a coupling rod. The ball head of the coupling rod engages in a receptacle of the driver, the driver's receptacle elastically expanding upon the action of a tensile force exerted on the drawer and thus releasing the ball head in the event of an overload. Sufficient space is available for this overload clutch, however, because the driver moves in the pull-out direction in the event of an excessive pulling movement on the drawer, thus increasing the distance between the driver and the coupling rod.

In der DE 20 2009 005433 U1 ist eine Schließ - und/oder Einzugsvorrichtung für bewegbare Möbelteile offenbart, mit einem federbeaufschlagten verfahrbaren Schlitten, der einen Mitnehmer trägt, sowie mit einem die Einzugsbewegung des Schlittens dämpfenden Fluiddämpfer, der einen Zylinder mit einem darin linear verfahrbaren Kolben aufweist.In the DE 20 2009 005433 U1 discloses a closing and / or retraction device for movable furniture parts, with a spring-loaded movable slide which carries a driver, and with a fluid damper which dampens the retraction movement of the slide and which has a cylinder with a piston which can be moved linearly therein.

Aufgabe der vorliegenden Erfindung ist es, einen Möbelantrieb der eingangs erwähnten Gattung vorzuschlagen, wobei Beschädigungen des Möbelantriebes, insbesondere der Dämpfvorrichtung, in einem Überlastfall verhindert werden können.The object of the present invention is to propose a furniture drive of the type mentioned at the outset, wherein damage to the furniture drive, in particular the damping device, can be prevented in the event of an overload.

Dies wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst. Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Unteransprüchen angegeben.This is solved according to the invention by the features of patent claim 1. Further advantageous refinements of the invention are specified in the dependent subclaims.

Gemäß der Erfindung ist also vorgesehen, dass der Stößel bei Überschreitung einer in Einzugsrichtung wirkenden Kraftausübung auf den Mitnehmer durch eine Öffnung der Haltevorrichtung hindurch bewegbar und so der Mitnehmer vom Stößel entkoppelbar ist.According to the invention it is therefore provided that the plunger can be moved through an opening of the holding device when force exerted on the driver acting in the pulling-in direction is exceeded and the driver can thus be decoupled from the plunger.

Mit anderen Worten ist die Haltevorrichtung als linear wirksame Überlastkupplung ausgebildet, welche oberhalb einer in Einzugsrichtung wirkenden Kraftausübung auf den Mitnehmer (d.h. wenn das bewegbare Möbelteil mit übermäßiger manueller Kraft bzw. Gewalt in Schließrichtung katapultiert wird) eine Entkopplung zwischen dem Mitnehmer und dem Stößel herbeiführt, sodass der Stößel bei einer solchen übermäßigen Krafteinwirkung auf den Mitnehmer durch eine Öffnung der Haltevorrichtung hindurchbewegt und eine fortgesetzte, zerstörungsfreie translatorische Bewegung des Stößels relativ zum Mitnehmer erfolgt. Somit kann die Gefahr einer Beschädigung (insbesondere ein Aufplatzen des Dämpfergehäuses und ein Austritt eines Dämpfungsmediums aufgrund übermäßiger Druckbeaufschlagung) durch einen in den Möbelkorpus einfahrenden Mitnehmer verhindert werden.In other words, the holding device is designed as a linearly effective overload clutch, which causes decoupling between the driver and the plunger above a force exerted on the driver in the pull-in direction (ie if the movable furniture part is catapulted with excessive manual force or force in the closing direction), so that the plunger moves through such an excessive force on the driver through an opening of the holding device and there is a continuous, non-destructive translational movement of the plunger relative to the driver. The risk of damage (in particular bursting of the damper housing and leakage of a damping medium due to excessive pressurization) can thus be prevented by a driver entering the furniture body.

Vorzugsweise ist vorgesehen, dass der Stößel auch bei Überschreitung einer entgegen der Einzugsrichtung wirkenden Kraftausübung auf den Mitnehmer durch eine weitere Öffnung der Haltevorrichtung hindurch bewegbar und so der Mitnehmer vom Stößel entkoppelbar ist. Mit anderen Worten kann also sowohl bei einem in Einzugsrichtung als auch bei einem in Auszugsrichtung des Mitnehmers wirkenden Überlastfall eine Entkopplung des Stößels vom Mitnehmer herbeigeführt werden.It is preferably provided that the plunger can be moved through a further opening of the holding device even when the force exerted on the driver counter to the pulling-in direction is exceeded, and the driver can thus be decoupled from the plunger. In other words, a decoupling of the ram from the driver can be brought about both in the event of an overload acting in the pull-in direction and in the pull-out direction of the driver.

Die Haltevorrichtung kann zumindest ein Halteelement aufweisen, welches den Stößel unterhalb einer vorgegebenen Krafteinwirkung auf den Mitnehmer relativ zur Halteeinrichtung hält und welches oberhalb einer vorgegebenen Krafteinwirkung auf den Mitnehmer eine zerstörungsfreie translatorische Bewegung des Stößels relativ zum Mitnehmer gestattet. Hierbei kann vorgesehen sein, dass das zumindest eine Halteelement von einem Kraftspeicher beaufschlagt ist. Dieser Kraftspeicher kann beispielsweise von einem mechanischen Federelement oder alternativ auch von einer Eigenelastizität des Halteelementes gebildet sein.The holding device can have at least one holding element which, relative to the plunger, acts on the driver below a predetermined force Holding device holds and which allows a non-destructive translatory movement of the plunger relative to the driver above a predetermined force on the driver. It can be provided that the at least one holding element is acted upon by an energy store. This energy accumulator can be formed, for example, by a mechanical spring element or alternatively also by an inherent elasticity of the holding element.

Die erfindungsgemäße Schubladenausziehführung umfasst eine an einem Möbelkorpus zu befestigende Korpusschiene und zumindest eine Ausziehschiene, welche relativ zur Korpusschiene zwischen einer Schließstellung und einer Offenstellung verfahrbar gelagert ist, sowie einen in Rede stehenden Möbelantrieb zum Einziehen der Ausziehschiene in die Schließstellung.The drawer pull-out guide according to the invention comprises a body rail to be fastened to a furniture body and at least one pull-out rail which is mounted so as to be movable relative to the body rail between a closed position and an open position, and a furniture drive in question for pulling the pull-out rail into the closed position.

Weitere Einzelheiten und Vorteile der Erfindung werden anhand der nachfolgenden Figurenbeschreibung erläutert. Dabei zeigt bzw. zeigen:

Fig. 1
eine perspektivische Darstellung eines Möbels mit einem Möbelkorpus und relativ dazu verfahrbar gelagerten Schubladen,
Fig. 2
ein Ausführungsbeispiel eines Möbelantriebes in einer Explosionsdarstellung,
Fig. 3a, 3b
der Möbelantrieb in einer Seitenansicht sowie in einer perspektivischen Darstellung,
Fig. 4a, 4b
eine Seitenansicht des Möbelantriebes, wobei der Stößel durch eine Überschreitung einer in Einzugsrichtung wirkenden Kraftausübung auf den Mitnehmer vom Mitnehmer entkoppelbar ist, sowie eine vergrößerte Detaildarstellung hierzu,
Fig. 5a, 5b
eine Seitenansicht des Möbelantriebes, wobei der Stößel durch eine Überschreitung einer entgegen der Einzugsrichtung wirkenden Kraftausübung auf den Mitnehmer vom Mitnehmer entkoppelbar ist, ist, sowie eine vergrößerte Detaildarstellung hierzu.
Further details and advantages of the invention are explained on the basis of the following description of the figures. It shows:
Fig. 1
1 shows a perspective illustration of a piece of furniture with a furniture body and drawers mounted so as to be movable relative thereto,
Fig. 2
an embodiment of a furniture drive in an exploded view,
3a, 3b
the furniture drive in a side view and in a perspective view,
4a, 4b
3 shows a side view of the furniture drive, the ram being able to be decoupled from the driver by exceeding a force exerted on the driver in the pulling-in direction, and an enlarged detailed illustration of this,
5a, 5b
a side view of the furniture drive, the plunger can be decoupled from the driver by exceeding a force exerted on the driver counter to the pull-in direction, and an enlarged detailed view of this.

Fig. 1 zeigt ein Möbel 1 mit einem schrankförmigen Möbelkorpus 2, wobei bewegbare Möbelteile 3 in Form von Schubladen über Schubladenausziehführungen 4 relativ zum Möbelkorpus 2 verfahrbar gelagert sind. Die Schubladen weisen jeweils eine Frontblende 5, einen Schubladenboden 6, Schubladenseitenwände 7 und eine Rückwand 8 auf. Die Schubladenausziehführungen 4 umfassen jeweils eine Korpusschiene 9, welche über Befestigungsabschnitte 12a, 12b am Möbelkorpus 2 zu befestigen ist, zumindest eine relativ zur Korpusschiene 9 verschiebbar gelagerte Ausziehschiene 10, welche mit der Schubladenseitenwand 7 zu verbinden ist, sowie gegebenenfalls eine Mittelschiene 11, welche zur Realisierung eines Vollauszuges der Schublade zwischen der Korpusschiene 9 und der Ausziehschiene 10 verfahrbar gelagert ist. Ferner weist die Schubladenausziehführung 4 einen Möbelantrieb 13 auf, durch den die Ausziehschiene 10 gegen Ende der Schließbewegung durch die Kraft einer Federvorrichtung 17 (Fig. 2) eingezogen und wobei diese federunterstützte Einzugsbewegung durch eine Dämpfvorrichtung 19 des Möbelantriebes 13 abgebremst wird. Fig. 1 shows a piece of furniture 1 with a cabinet-shaped furniture body 2, movable furniture parts 3 in the form of drawers being mounted so as to be movable relative to the furniture body 2 via drawer pull-out guides 4. The drawers each have one Front panel 5, a drawer bottom 6, drawer side walls 7 and a rear wall 8. The drawer pull-out guides 4 each comprise a body rail 9 which is to be fastened to the furniture body 2 via fastening sections 12a, 12b, at least one pull-out rail 10 which is displaceably mounted relative to the body rail 9 and which is to be connected to the drawer side wall 7, and optionally a middle rail 11 which is used for Realization of a full extension of the drawer between the body rail 9 and the pull-out rail 10 is movably mounted. Furthermore, the drawer pull-out guide 4 has a furniture drive 13, through which the pull-out rail 10 towards the end of the closing movement by the force of a spring device 17 ( Fig. 2 ) retracted and this spring-assisted retraction movement is braked by a damping device 19 of the furniture drive 13.

Fig. 2 zeigt ein Ausführungsbeispiel eines Möbelantriebes 13 in einer Explosionsdarstellung. Der Möbelantrieb 13 weist ein Gehäuse 18 auf, wobei ein um eine Gelenkachse 15 schwenkbarer Mitnehmer 14 zur lösbaren Kopplung mit dem bewegbaren Möbelteil 3 entlang eines in einer Längsrichtung (L) des Gehäuses 18 verlaufenden linearen Verfahrweges 31a (Fig. 3a) verschiebbar gelagert ist. Zur Kraftbeaufschlagung des Mitnehmers 14 in Einzugsrichtung 22 ist eine Federvorrichtung 17 (vorzugsweise mit zumindest einer Zugfeder) vorgesehen, durch welche der Mitnehmer 14 bzw. das damit gekoppelte bewegbare Möbelteil 3 in Einzugsrichtung 22 einziehbar ist. Die Federvorrichtung 17 weist eine erste Befestigungsstelle 17a auf, welche in Montagelage mit einem stationären Lagerteil 23 verbunden ist, die zweite Befestigungsstelle 17b der Federvorrichtung 17 ist mit einem Lager 16b einer Haltevorrichtung 16 verbunden, welche mit dem Mitnehmer 14 über die Gelenkachse 15 verbunden ist. Die Haltevorrichtung 16 weist zumindest ein Führungselement 33 auf, durch welches die Haltevorrichtung 16 zusammen mit dem Mitnehmer 14 relativ zum Gehäuse 18 entlang einer Führungsbahn 18a verschiebbar gelagert ist. Zur Dämpfung der federunterstützten Einzugsbewegung des Mitnehmers 14 in Einzugsrichtung 22 ist eine Dämpfvorrichtung 19 in Form eines Lineardämpfers mit einer Fluidkammer 20 und einem relativ dazu bewegbaren Stößel 21 in Form einer Kolbenstange vorgesehen. Die Fluidkammer 20 ist in einem Fluidzylinder ausgebildet, welcher in Montagelage mit einem Ende ebenfalls mit dem Lagerteil 23 in Verbindung steht. Die zwischen dem Stößel 21 und dem Mitnehmer 14 angeordnete Haltevorrichtung 16 ist zum lösbaren Halten des Stößels 21 relativ zum Mitnehmer 14 vorgesehen, sodass der Stößel 21 bei Überschreitung einer in Einzugsrichtung 22 wirkenden Kraftausübung auf den Mitnehmer 14 durch eine Öffnung 24 der Haltevorrichtung 16 hindurch bewegbar und so der Mitnehmer 14 vom Stößel 21 entkoppelbar ist. Fig. 2 shows an embodiment of a furniture drive 13 in an exploded view. The furniture drive 13 has a housing 18, a driver 14 which can be pivoted about an articulation axis 15 for releasable coupling to the movable furniture part 3 along a linear travel path 31a (running in a longitudinal direction (L) of the housing 18). Fig. 3a ) is slidably mounted. To apply force to the driver 14 in the pull-in direction 22, a spring device 17 (preferably with at least one tension spring) is provided, through which the driver 14 or the movable furniture part 3 coupled therewith can be pulled in in the pull-in direction 22. The spring device 17 has a first fastening point 17a, which is connected in the assembled position to a stationary bearing part 23, the second fastening point 17b of the spring device 17 is connected to a bearing 16b of a holding device 16, which is connected to the driver 14 via the hinge axis 15. The holding device 16 has at least one guide element 33, by means of which the holding device 16 together with the driver 14 is displaceably mounted relative to the housing 18 along a guide track 18a. A damping device 19 in the form of a linear damper with a fluid chamber 20 and a plunger 21 movable in relation to it in the form of a piston rod is provided for damping the spring-assisted pull-in movement of the driver 14 in the pull-in direction 22. The fluid chamber 20 is formed in a fluid cylinder which, in the installed position, also has one end connected to the bearing part 23. The arranged between the plunger 21 and the driver 14 Holding device 16 is provided for releasably holding the plunger 21 relative to the driver 14, so that the plunger 21 can be moved through an opening 24 of the holding device 16 when force exerted on the driver 14 in the pull-in direction 22 and the driver 14 can thus be decoupled from the plunger 21 .

Die Haltevorrichtung 16 weist in der gezeigten Figur zwei Halteelemente 28a und 28b auf, welche eine Aufnahmekammer 26 zur Aufnahme eines Koppelstückes 29 des Stößels 21 begrenzen. Über einen Kraftspeicher 30, welcher im gezeigten Ausführungsbeispiel als eine die beiden Halteelemente 28a, 28b umgreifende Federklammer aus Federstahl ausgebildet ist, wird das Koppelstück 29 des Stößels 21 in der Aufnahmekammer 26 in Position gehalten. Das am Stößel 21 angeordnete oder ausgebildete Koppelstück 29 weist einen größeren Durchmesser als der Stößel 21 auf, wobei das Koppelstück 29 in einem Normalbetrieb (d.h. unterhalb einer vorgegebenen Kraftausübung auf den Mitnehmer 14) in dieser Aufnahmekammer 26 der Haltevorrichtung 16 gehalten und somit die Kopplung zwischen der Haltevorrichtung 16 und dem Stößel 21 gewährleistet ist. Bei Überschreitung einer auf den Mitnehmer 14 ausgeübten Krafteinwirkung in Einzugsrichtung 22 kann sich das Koppelstück 29 des Stößels 21 durch eine Öffnung 24 der Haltevorrichtung 16 hindurch bewegen, sodass der Mitnehmer 14 vom Stößel 21 entkoppelbar ist. Im gezeigten Ausführungsbeispiel kann das Koppelstück 29 bei Überschreitung einer in Einzugsrichtung 22 wirkenden Krafteinwirkung auf den Mitnehmer 14 in einen Ausweichkanal 27 der Haltevorrichtung 16 einfahren, wobei eine Längsrichtung des Ausweichkanals 27 koaxial zu einer Längsrichtung des Stößels 21 verläuft. Dieser Ausweichkanal 27 ist allerdings nicht zwingend notwendig, es würde beispielsweise auch genügen, das Koppelstück 29 des Stößels 21 ausgehend von der Aufnahmekammer 26 in einen seitlich neben der Aufnahmekammer 26 vorhandenen Freiraum einfahren zu lassen.In the figure shown, the holding device 16 has two holding elements 28a and 28b, which delimit a receiving chamber 26 for receiving a coupling piece 29 of the plunger 21. The coupling piece 29 of the plunger 21 is held in position in the receiving chamber 26 by means of an energy accumulator 30, which in the exemplary embodiment shown is designed as a spring clip made of spring steel encompassing the two holding elements 28a, 28b. The coupling piece 29 arranged or formed on the tappet 21 has a larger diameter than the tappet 21, the coupling piece 29 being held in this receiving chamber 26 of the holding device 16 in normal operation (ie below a predetermined application of force on the driver 14) and thus the coupling between the holding device 16 and the plunger 21 is guaranteed. When a force exerted on the driver 14 in the feed direction 22 is exceeded, the coupling piece 29 of the plunger 21 can move through an opening 24 of the holding device 16, so that the driver 14 can be decoupled from the plunger 21. In the exemplary embodiment shown, the coupling piece 29 can move into an escape channel 27 of the holding device 16 when a force acting on the driver 14 acting in the drawing-in direction 22 is exceeded, a longitudinal direction of the escape channel 27 running coaxially with a longitudinal direction of the plunger 21. This escape channel 27 is, however, not absolutely necessary, for example it would also suffice to let the coupling piece 29 of the plunger 21, starting from the receiving chamber 26, move into a space that is present on the side next to the receiving chamber 26.

Bei Überschreitung einer entgegen der Einzugsrichtung 22 wirkenden Kraftausübung auf den Mitnehmer 14 kann sich hingegen das Koppelstück 29 des Stößels 21 durch eine weitere Öffnung 25 der Haltevorrichtung 16 hindurch bewegen, sodass der Mitnehmer 14 vom Stößel 21 entkoppelbar ist. Bei dieser entgegen der Einzugsrichtung 22 wirkenden Überlast (d.h. bei einer übermäßigen Zugbewegung auf das bewegbare Möbelteil 3 in Öffnungsrichtung) fährt das Koppelstück 29 aus der Aufnahmekammer 26 in einen seitlich neben der Aufnahmekammer 26 vorhandenen Freiraum hinaus und vergrößert anschließend seinen Abstand zur Haltevorrichtung 16. Durch Bewegen des bewegbaren Möbelteiles 3 können der Mitnehmer 17 und der Stößel 21 wieder aufeinander zu bewegt werden, sodass der Stößel 21 wieder in die Aufnahmekammer 26 einfährt und die Kopplung zwischen Stößel 21 und Haltevorrichtung 16 wieder hergestellt wird.On the other hand, if a force exerted on the driver 14 counter to the pull-in direction 22 is exceeded, the coupling piece 29 of the tappet 21 can move through a further opening 25 of the holding device 16, so that the driver 14 can be decoupled from the tappet 21. In the event of this overload acting counter to the drawing-in direction 22 (ie in the event of an excessive pulling movement on the movable furniture part 3 in the opening direction), the coupling piece 29 moves out of the receiving chamber 26 into a space to the side of the receiving chamber 26 and then increases its distance from the holding device 16. By moving the movable furniture part 3, the driver 17 and the plunger 21 can be moved towards each other again, so that the plunger 21 moves back into the receiving chamber 26 and the coupling between the plunger 21 and the holding device 16 is restored.

Fig. 3a zeigt den Möbelantrieb 13 in einer Seitenansicht, wobei der im Gehäuse 18 gelagerte Mitnehmer 14 mit gestrichelter Line gekennzeichnet ist. Das Gehäuse 18 weist einen linearen Verfahrweg 31a zur verfahrbaren Lagerung des Mitnehmers 14 auf, wobei sich an den linearen Verfahrweg 31a eine Abbiegung 31b anschließt, welche zur lösbaren Verriegelung des Mitnehmers 14 in einer vorgespannten Parkposition vorgesehen ist. Der Mitnehmer 14 ist also zwischen der gezeigten Parkposition, in welcher die Federvorrichtung 17 gespannt ist, und einer eingezogenen Endlage, in welcher die Federvorrichtung 17 weitgehend entspannt ist, entlang des linearen Verfahrweges 31a bewegbar gelagert. Der Mitnehmer 14 umfasst einen Führungszapfen 14a, durch welchen der Mitnehmer 14 entlang der Abbiegung 31b und entlang des linearen Verfahrweges 31a verschiebbar geführt ist. Überdies ist der Mitnehmer 14 zur lösbaren Kopplung mit dem bewegbaren Möbelteil 3 mit einer Kerbe 32 versehen, welche mit einem am bewegbaren Möbelteil 3 angeordneten Koppelzapfen lösbar koppelbar ist. Gegen Ende der Schließbewegung des bewegbaren Möbelteiles 3 fährt dieser Koppelzapfen in die Kerbe 32 ein, sodass der Mitnehmer 14 aus der gezeigten Parkposition herausgekippt und durch die Kraft der sich entspannenden Federvorrichtung 17 in Einzugsrichtung 22 eingezogen wird. Der Mitnehmer 14 ist über die Gelenkachse 15 mit der Haltevorrichtung 16 schwenkbar verbunden, wobei ein an der Haltevorrichtung 16 angeordnetes Führungselement 33 entlang einer Führung 18a des Gehäuses 18 verschiebbar gelagert ist. Zur Dämpfung dieser federunterstützten Einzugsbewegung ist eine Dämpfvorrichtung 19 mit einer Fluidkammer 20 vorgesehen, wobei der Stößel 21 bei einer Bewegung des Mitnehmers 14 in Einzugsrichtung 22 in die Fluidkammer 20 einfährt und die Bewegung des Mitnehmers 14 durch ein in der Fluidkammer 20 befindliches Dämpfungsfluid abgebremst wird. Bei Überschreitung einer in Einzugsrichtung 22 wirkenden Kraftausübung auf den Mitnehmer 14 wird der Stößel 21 durch eine Öffnung 24 (Fig. 2) hindurchbewegt und kann in den Ausweichkanal 27 einfahren, sodass der Mitnehmer 14 vom Stößel 21 entkoppelt wird. Bei Überschreitung einer entgegen der Einzugsrichtung 22 wirkenden Kraftausübung auf den Mitnehmer 14 wird das Koppelstück 22 des Stößels 21 durch eine weitere Öffnung 25 (Fig. 2) der Haltevorrichtung 16 hindurch bewegt, sodass der Mitnehmer 14 bei einer übermäßigen Zugausübung auf das bewegbare Möbelteil 3 ebenfalls vom Stößel 21 entkoppelbar ist. Fig. 3b zeigt den in Fig. 3a gezeigten Möbelantrieb 13 in einer perspektivischen Ansicht. Fig. 3a shows the furniture drive 13 in a side view, the driver 14 mounted in the housing 18 being identified by a dashed line. The housing 18 has a linear travel path 31a for the movable mounting of the driver 14, with a bend 31b adjoining the linear travel path 31a, which bend is provided for releasably locking the driver 14 in a prestressed parking position. The driver 14 is thus mounted between the shown parking position, in which the spring device 17 is tensioned, and a retracted end position, in which the spring device 17 is largely relaxed, along the linear travel path 31a. The driver 14 comprises a guide pin 14a, through which the driver 14 is slidably guided along the bend 31b and along the linear travel path 31a. In addition, the driver 14 is provided for releasable coupling with the movable furniture part 3 with a notch 32, which can be detachably coupled to a coupling pin arranged on the movable furniture part 3. Towards the end of the closing movement of the movable furniture part 3, this coupling pin moves into the notch 32, so that the driver 14 tilts out of the park position shown and is drawn in by the force of the relaxing spring device 17 in the pull-in direction 22. The driver 14 is pivotally connected to the holding device 16 via the hinge axis 15, a guide element 33 arranged on the holding device 16 being slidably mounted along a guide 18a of the housing 18. To dampen this spring-assisted retraction movement, a damping device 19 is provided with a fluid chamber 20, the plunger 21 moving into the fluid chamber 20 when the driver 14 moves in the direction of pull-in 22, and the movement of the driver 14 is braked by a damping fluid located in the fluid chamber 20. If a force exerted on the driver 14 acting in the feed direction 22 is exceeded, the tappet 21 is opened through an opening 24 ( Fig. 2 ) moves through and can enter the escape channel 27, so that the driver 14 is decoupled from the plunger 21. If a force exerted against the pull-in direction 22 on the driver 14 is exceeded, the coupling piece 22 of the plunger 21 is passed through a further opening 25 ( Fig. 2 ) of the holding device 16 moves through, so that the driver 14 can also be uncoupled from the plunger 21 in the event of excessive pulling on the movable furniture part 3. Fig. 3b shows the in Fig. 3a furniture drive 13 shown in a perspective view.

Fig. 4a zeigt den Möbelantrieb 13 in einer Seitenansicht, wobei der Stößel 21 durch eine Überschreitung einer in Einzugsrichtung 22 wirkenden Kraftausübung auf den Mitnehmer 14 von diesem entkoppelt ist. Durch diese übermäßige Kraftausübung auf den Mitnehmer 14 in Einzugsrichtung 22 wurde nämlich das Koppelstück 29 des Stößels 21 ausgehend von der Aufnahmekammer 26 durch die Öffnung 24 hindurch in den Ausweichkanal 27 der Haltevorrichtung 16 hineingedrängt, sodass der Mitnehmer 14 ohne eine weitere Relativbewegung zwischen Stößel 21 und Fluidkammer 20 weiter in Einzugsrichtung 22 bewegbar ist. Durch eine manuelle Zugbewegung auf das bewegbare Möbelteil 3 kann das Koppelstück 29 des Stößels 21 wieder mit der Aufnahmekammer 26 der Haltevorrichtung 16 gekoppelt werden. Fig. 4b zeigt den in Figur 4a eingekreisten Bereich in einer vergrößerten Ansicht. Fig. 4a shows the furniture drive 13 in a side view, the plunger 21 being decoupled from the driver 14 by exceeding a force exerted in the pull-in direction 22. Because of this excessive application of force on the driver 14 in the feed direction 22, the coupling piece 29 of the tappet 21 was forced out of the receiving chamber 26 through the opening 24 into the escape channel 27 of the holding device 16, so that the driver 14 without any further relative movement between the tappet 21 and Fluid chamber 20 can be moved further in the feed direction 22. The coupling piece 29 of the plunger 21 can be coupled again to the receiving chamber 26 of the holding device 16 by a manual pulling movement onto the movable furniture part 3. Fig. 4b shows the in Figure 4a circled area in an enlarged view.

Fig. 5a zeigt den Möbelantrieb 13 in einer Seitenansicht, wobei der Stößel 21 durch eine Überschreitung einer entgegen der Einzugsrichtung 22 wirkenden Kraftausübung auf den Mitnehmer 14 von diesem entkoppelt ist. Durch diese übermäßige Kraftausübung auf den Mitnehmer 14 entgegen der Einzugsrichtung 22 wurde nämlich das Koppelstück 29 des Stößels 21 ausgehend von der Aufnahmekammer 26 durch die weitere Öffnung 25 hindurch in einen seitlich neben der Aufnahmekammer 26 vorhandenen Freiraum bewegt, sodass der Mitnehmer 14 ohne eine weitere Relativbewegung zwischen Stößel 21 und Fluidkammer 20 weiter entgegen der Einzugsrichtung 22 (d.h. in Richtung Parkposition) bewegbar ist. Durch eine manuelle Druckausübung auf das bewegbare Möbelteil 3 kann das Koppelstück 29 des Stößels 21 wieder mit der Aufnahmekammer 26 der Haltevorrichtung 16 gekoppelt werden. Fig. 5b zeigt den in Figur 5a eingekreisten Bereich in einer vergrößerten Ansicht Fig. 5a shows the furniture drive 13 in a side view, the plunger 21 being decoupled from the driver 14 by exceeding a force exerted counter to the pull-in direction 22. As a result of this excessive application of force on the driver 14 counter to the feed direction 22, the coupling piece 29 of the plunger 21 was moved starting from the receiving chamber 26 through the further opening 25 into a free space to the side of the receiving chamber 26, so that the driver 14 without any further relative movement between plunger 21 and fluid chamber 20 can be moved further against the feed direction 22 (ie in the direction of the parking position). By manually exerting pressure on the movable furniture part 3, the coupling piece 29 of the plunger 21 can be coupled again to the receiving chamber 26 of the holding device 16. Fig. 5b shows the in Figure 5a circled area in an enlarged view

Im gezeigten Ausführungsbeispiel sind die beiden Halteelemente 28a, 28b von einem Kraftspeicher 30 beaufschlagt, wobei dieser Kraftspeicher 30 von einem mechanischen Federelement oder auch von einer Eigenelastizität der Haltelemente 28a, 28b gebildet sein kann. Die Halteelemente 28a, 28b sind oberhalb einer vorgegebenen Krafteinwirkung auf den Mitnehmer 14 in einer quer zur Längsrichtung des Stößels 21 verlaufenden Richtung verformbar oder verbiegbar ausgebildet ist, sodass der Mitnehmer 14 vom Stößel 21 entkoppelbar ist. Auch ist es möglich, die elastische Vorspannung der Halteelemente 28a, 28b in Richtung des Koppelstückes 29 einstellbar zu gestalten. Dies kann beispielsweise mittels einer (hier nicht gezeigten) Einstellschraube erfolgen, wobei durch Drehung der Einstellschraube die Vorspannung des Kraftspeichers 30 und damit die Auslösekraft der Halteelemente 28a, 28b einstellbar ist.In the exemplary embodiment shown, the two holding elements 28a, 28b are acted upon by an energy accumulator 30, this energy accumulator 30 being actuated by a mechanical one Spring element or can also be formed by an inherent elasticity of the holding elements 28a, 28b. The holding elements 28a, 28b are designed to be deformable or bendable above a predetermined force acting on the driver 14 in a direction running transversely to the longitudinal direction of the tappet 21, so that the driver 14 can be decoupled from the tappet 21. It is also possible to make the elastic prestressing of the holding elements 28a, 28b adjustable in the direction of the coupling piece 29. This can be done, for example, by means of an adjusting screw (not shown here), the prestress of the energy accumulator 30 and thus the triggering force of the holding elements 28a, 28b being adjustable by rotating the adjusting screw.

In den gezeigten Ausführungsbeispielen weist die Dämpfvorrichtung 19 eine relativ zu Fluidkammer 20 verschiebbar gelagerte Kolbenstange auf, wobei der Stößel 21 von der Kolbenstange gebildet ist. In kinematischer Umkehr ist es auch möglich, das freie Ende der Kolbenstange in Montagelage ortsfest abzustützen, sodass die Fluidkammer 20 (d.h. der Dämpfungszylinder) zur Ausführung eines Dämpfungshubes relativ zur feststehenden Kolbenstange verschiebbar ist. In diesem Fall wird der Stößel 21 durch den Dämpfungszylinder gebildet.In the exemplary embodiments shown, the damping device 19 has a piston rod that is displaceable relative to the fluid chamber 20, the plunger 21 being formed by the piston rod. In kinematic reversal, it is also possible to support the free end of the piston rod in a fixed position in the assembly position, so that the fluid chamber 20 (i.e. the damping cylinder) can be displaced relative to the fixed piston rod in order to carry out a damping stroke. In this case, the plunger 21 is formed by the damping cylinder.

Claims (15)

  1. A furniture drive (13) for retracting a movably-supported furniture part (3) into a closed end position relative to a furniture carcass (2), comprising:
    - an entrainment member (14) for retracting the movable furniture part (3), the entrainment member (14) being displaceably arranged at least over a region along a linear displacement path (31a) and being configured to be releasably coupled to the movable furniture part (3),
    - a spring device (17) for applying a force to the entrainment member (14) in a retracting direction (22),
    - a damping device (19) for dampening a movement of the entrainment member (14) in the retracting direction (22), the damping device (19) including a fluid chamber (20) and a ram (21) displaceably arranged relative to the fluid chamber (20),
    - a holding device (16) arranged between the ram (21) and the entrainment member (14), wherein the holding device (16) holds the ram (21) relative to the entrainment member (14),
    characterized in that the ram (21), when a force exertion applied to the entrainment member (14) in the retracting direction (22) is exceeded, is moved through an opening (24) of the holding device (16) so that the entrainment member (14) is decoupled from the ram (21).
  2. The furniture drive according to claim 1, characterized in that the ram (21), when a force exertion applied to the entrainment member (14) in a direction opposite the retracting direction (22) is also exceeded, can be moved through a further opening (25) of the holding device (16), whereby the entrainment member (14) can be decoupled from the ram (21).
  3. The furniture drive according to claim 1 or 2, characterized in that the holding device (16) includes at least one holding element (28a) which holds the ram (21) relative to the holding device (16) below a predetermined force exertion applied to the entrainment member (14), and which allows a destruction-free translational movement of the ram (21) relative to the entrainment member (14) above the predetermined force exertion applied to the entrainment member (14).
  4. The furniture drive according to claim 3, characterized in that the at least one holding element (28a) is acted upon by an energy storage member (30).
  5. The furniture drive according to claim 4, characterized in that the energy storage member (30) is formed by a mechanical spring element or by an intrinsic elasticity of the holding element (28a).
  6. The furniture drive according to one of the claims 3 to 5, characterized in that the at least one holding element (28a), above a predetermined force exertion applied to the entrainment member (14), is configured so as to be deformable or bendable in a direction transverse to the longitudinal direction of the ram (21), so that the entrainment member (14) can be decoupled from the ram (21).
  7. The furniture drive according to one of the claims 3 to 6, characterized in that the holding device (16) includes at least two holding elements (28a, 28b) for holding the ram (21).
  8. The furniture drive according to one of the claims 1 to 7, characterized in that the holding device (16) is pivotally connected to the entrainment member (14) by a hinge axis (15).
  9. The furniture drive according to one of the claims 1 to 8, characterized in that the holding device (16) has at least one bypass channel (27) into which the ram (21) can be moved above a predetermined force exertion applied to the entrainment member (14).
  10. The furniture drive according to claim 9, characterized in that the bypass channel (27) has a longitudinal direction extending coaxially to a longitudinal direction of the ram (21).
  11. The furniture drive according to one of the claims 1 to 10, characterized in that the ram (21) has a free end portion with a coupling portion (29) formed or arranged thereon, wherein the coupling portion (29), below a predetermined force exertion applied to the entrainment member (14), is held in a receiving chamber (26) of the holding device (16).
  12. The furniture drive according to one of the claims 1 to 11, characterized in that the furniture drive (13) includes a housing (18) having at least one guide (18a), wherein the holding device (16) is displaceably arranged relative to the housing (18) along the guide (18a).
  13. The furniture drive according to claim 12, characterized in that the holding device (16) includes at least one guide element (33) displaceably arranged along the guide (18a) of the housing (18).
  14. The furniture drive according to one of the claims 1 to 13, characterized in that the damping device (19) includes a piston rod displaceably arranged relative to the fluid chamber (20), wherein the ram (21) is formed by the piston rod.
  15. A drawer pull-out guide (4) comprising a carcass rail (9) to be fixed to a furniture carcass (2) and at least one extension rail (10) displaceably arranged relative to the carcass rail (9) between a closed position and an open position, and a furniture drive (13) according to one of the claims 1 to 14 for retracting the extension rail (10) into the closed position.
EP17706403.7A 2016-04-05 2017-02-09 Furniture drive Active EP3439505B1 (en)

Applications Claiming Priority (2)

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ATA50274/2016A AT518398B1 (en) 2016-04-05 2016-04-05 furniture drive
PCT/AT2017/060023 WO2017173469A2 (en) 2016-04-05 2017-02-09 Furniture drive

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EP3439505B1 true EP3439505B1 (en) 2020-04-01

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JP (1) JP6732937B2 (en)
CN (1) CN108882794B (en)
AT (1) AT518398B1 (en)
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AT520402A1 (en) * 2017-08-17 2019-03-15 Blum Gmbh Julius drawer
DE102018008202A1 (en) * 2018-10-14 2020-04-16 Günther Zimmer Feeding device with spring energy storage that can be engaged
DE102019110035A1 (en) * 2019-04-16 2020-10-22 Paul Hettich Gmbh & Co. Kg Feeding device for a movable part
KR102609780B1 (en) * 2021-04-26 2023-12-06 (주)세고스 Slide apparatus

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WO2017173469A2 (en) 2017-10-12
CN108882794B (en) 2020-05-26
AT518398B1 (en) 2017-10-15
WO2017173469A3 (en) 2017-11-30
MY191813A (en) 2022-07-18
AT518398A4 (en) 2017-10-15
EP3439505A2 (en) 2019-02-13
CN108882794A (en) 2018-11-23
US20190008276A1 (en) 2019-01-10
ES2802573T3 (en) 2021-01-20
US10653240B2 (en) 2020-05-19
JP6732937B2 (en) 2020-07-29
JP2019510578A (en) 2019-04-18

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