EP3558060B1 - System comprising lifting hardware - Google Patents

System comprising lifting hardware Download PDF

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Publication number
EP3558060B1
EP3558060B1 EP17816521.3A EP17816521A EP3558060B1 EP 3558060 B1 EP3558060 B1 EP 3558060B1 EP 17816521 A EP17816521 A EP 17816521A EP 3558060 B1 EP3558060 B1 EP 3558060B1
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EP
European Patent Office
Prior art keywords
support frame
base
plug
slot
work surface
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Application number
EP17816521.3A
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German (de)
French (fr)
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EP3558060A1 (en
Inventor
Axel Uffmann
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Ninkaplast GmbH
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Ninkaplast GmbH
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Publication of EP3558060A1 publication Critical patent/EP3558060A1/en
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    • 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
    • A47B51/00—Cabinets with means for moving compartments up and down
    • 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
    • A47B77/00—Kitchen cabinets
    • A47B77/04—Provision for particular uses of compartments or other parts ; Compartments moving up and down, revolving parts
    • A47B77/16—Provision for particular uses of compartments or other parts ; Compartments moving up and down, revolving parts by adaptation of compartments or drawers for receiving or holding foodstuffs; by provision of rotatable or extensible containers for foodstuffs
    • 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
    • A47B77/00—Kitchen cabinets
    • A47B77/04—Provision for particular uses of compartments or other parts ; Compartments moving up and down, revolving parts
    • A47B77/10—Provision for particular uses of compartments or other parts ; Compartments moving up and down, revolving parts with members movable outwards to a position of use, e.g. tables, ironing boards

Definitions

  • the invention relates to a system comprising a lift fitting, a worktop and a floor that can be lowered into an opening in the worktop, the lift fitting having a support frame (16) which holds the floor and is adjustable in height relative to the worktop by means of a drive.
  • Lift fittings of this type are used, for example, in kitchen corner cabinets and can have one or more shelves arranged one above the other, on which objects can be placed that can be accommodated in the hard-to-reach interior of the corner cabinet by inserting the floors with the lift fitting through the worktop the corner cabinet can be lowered.
  • the object of the invention is to create a system with a lift fitting with increased protection against injury.
  • each engagement structure has a vertically oriented web on one of the components: support frame and base, and a complementary plug-in slot on the other component and the relative position of support frame and base only in the horizontal direction at right angles to the Web defines, and that for each pair of adjacent engagement structures, the slots are oriented at right angles to each other.
  • the invention creates a mechanically automatic anti-crushing protection, because the inwardly offset supporting frame only causes a shear movement between the floor and the opening edge of the worktop, but the floor can be lifted upwards with almost no resistance. Nevertheless, the engagement structures ensure that the floor is fixed on the support frame in a form-fitting manner in the horizontal in every direction.
  • At least one of the plug-in slots on the opposite side is oriented parallel to the raised side of the floor, and this plug-in slot and the web engaging in it define a pivot axis around which the floor can be pivoted.
  • a lift fitting 10 is shown which, viewed in plan, is arranged in an opening 12 of a worktop 14, for example a kitchen worktop, which extends over several base units.
  • the opening 12 and the lift fitting are then arranged above a corner cabinet or in the corner cabinet.
  • the lift fitting 10 has a support frame 16 on which a floor 18 is supported, which in the example shown has an approximately square shape and practically completely fills the opening 12 when the floor 18 and the worktop 14 are at the same height.
  • the support frame has a holder 20 on one side with which it can be attached to a vertical column 21 (not shown) Fig. 6 ) is attached, which can be adjusted in height with the aid of a motor drive 21a.
  • the in Fig. 1 The bottom 18 shown in dashed lines forms the top bottom of the lift fitting and completely covers the column 21 and the holder 20. Support frames and floors of the same type can be found further below are located ( Fig. 6 ), in which, however, the bottom is notched in each case at the point of the holder 20 so that the column can pass through the floor with some play.
  • the base 18 is held on the support frame with the aid of four engagement structures 22 which form the corners of a rectangle and, in the example shown, are arranged at the corners of the support frame and the base.
  • the outer circumference of the support frame is formed by four frame legs 24 connected to one another at the corners, which in this case have the shape of upright flat bars.
  • the support frame is stiffened by struts 26 which converge in a V-shape to the position of the holder 20.
  • the engagement structures 22 each have a support 30, which has an approximately L-shaped plan and is plugged with the free end of one of its legs onto one of the frame legs 24 converging at the relevant corner and is also supported on the frame leg at right angles thereto.
  • the support In its horizontal upper surface, the support forms a straight-line plug-in slot 32 into which a web 34 formed on the underside of the base 18 engages. In this way, the horizontal position of the base 18 in the relevant corner in the direction at right angles to the plug-in slot 32 and the web 34 is determined.
  • the four engagement structures have an identical structure, but are arranged in positions rotated by 90 ° so that the plug-in slots 32 of two engagement structures 22, which are not diagonally opposite one another, but are arranged adjacent to one another on the same side of the base and the support frame, are at right angles run towards each other.
  • the position of the bottom 18 in the horizontal in both translational degrees of freedom and in the rotational degree of freedom (rotation about the vertical axis) is determined.
  • the frame legs 24 of the support frame are at a considerable horizontal distance from the edge of the opening 12 of the worktop, whereby the risk of crushing between the worktop and the support frame is almost zero is decreased. If someone reaches into the opening 12 of the worktop with his hand while the support frame and the floor are lowering and one side of the floor hits the hand, the floor 18 can be easily lifted upwards from the support frame. In general, the floor will pivot about an axis which is defined by one of the two plug-in slots on the opposite side of the floor. Because of the large distance between the raised side of the base and the web 34, which is received in the plug-in slot forming the pivot axis, the web 34 only performs a very small tilting movement in the direction perpendicular to the plug-in slot.
  • the support 30 is formed by a plastic part in which the walls of the plug-in slot have a certain elasticity so that they can accommodate the web 34 without play and still allow the base to pivot.
  • At least the underside of the base 18 is formed by a plastic part which, in addition to the webs 34 already mentioned, has further webs 36 that reinforce the structure and of which only a few are shown here. Further webs on the underside of the base form a circumferential outer frame 38 and a little further inside a circumferential inner frame 40. The inner frame 40, however, also lies outside the support frame 16.
  • the vertical position of the base is not determined by the webs 34 and the plug-in slots 32, but rather by height-adjustable support plates 42, which are arranged in the inner corners of the support frame 16 and from the L. -shaped supports 30 are enclosed. With the help of the support plate 42, the vertical position of the floor 18 can be adjusted at all four corners so that the floor can be aligned exactly parallel to the plane of the worktop 14.
  • FIG. 2 In the sectional view in Fig. 2 runs at the engagement structure 22 on the right side, which is shown in FIG Fig. 3
  • the sectional plane through the plug-in slot 32 and the web 34 engaging in it is shown again enlarged.
  • the adjusting screw 44 On the outer circumference, the adjusting screw 44 has a circumferential groove into which a flange 46 protruding downward from the support 30 engages.
  • the flange 46 has a downwardly open U-shaped recess, the edge of which engages in the circumferential groove of the adjusting screw 44.
  • the adjusting screw 44 When the adjusting screw 44 is rotated, its axial position changes in the direction at right angles to the plug-in slot 32.
  • the support 30 takes part in this movement because it rests on the frame leg 24, which is shown in FIG Fig. 3 is shown in section, only rests loosely and is displaceable on the frame leg which extends at right angles thereto and onto which it is attached.
  • the adjusting screws 44 of the four engagement structures 22 allow an adjustment of the base 18 in all degrees of freedom of movement in the horizontal.
  • the base 18 can be adjusted in such a way that its edges run exactly parallel to the edges of the opening 12 in the worktop.
  • Fig. 4 the support frame 16 is shown without the bottom 18 in a perspective view.
  • One of these supports is shown in Fig. 5 shown again enlarged.
  • the vertical walls of the plug-in slot 32 form inlet bevels for the web 34 on the upper edge and are only connected by a relatively thin, flexurally elastic web 54 at the bottom of the plug-in slot.
  • this slot 32 can be elastically deformed and thus follow the slight pivoting movement of the web 34 engaging in this slot. In this way, an extremely low-play or even play-free fixing of the base 18 on the support frame 16 is achieved and, nevertheless, a smooth lifting and pivoting of the base 18 is made possible.
  • the entire lift fitting 10 is received in a shaft-like housing 56 which is let into the worktop 14 and on the bottom of which the motor drive 21a for the column 21 is arranged.
  • the column On its outside, the column has a T-shaped guide profile 58 which extends displaceably through a holder 60 which is fastened in the upper region of the housing 56 to its side wall.
  • the engagement of the guide profile in the holder 60 prevents the column 21 from tipping (to the left in Fig. 6 ) is prevented even if the column is extended relatively far up.

Description

Die Erfindung betrifft ein System umfassend einen Liftbeschlag, eine Arbeitsplatte und einen in eine Öffnung der Arbeitsplatte versenkbaren Boden, wobei der Liftbeschlag einen Tragrahmen (16) aufweist, der den Boden hält und mittels eines Antriebs in der Höhe relativ zu der Arbeitsplatte verstellbar ist.The invention relates to a system comprising a lift fitting, a worktop and a floor that can be lowered into an opening in the worktop, the lift fitting having a support frame (16) which holds the floor and is adjustable in height relative to the worktop by means of a drive.

Liftbeschläge dieser Art werden beispielsweise in Kücheneckschränken eingesetzt und können einen oder mehrere regalartig übereinander angeordnete Böden aufweisen, auf denen Gegenstände abgestellt werden können, die so in dem schwer zugänglichen Innenraum des Eckschrankes untergebracht werden können, indem die Böden mit dem Liftbeschlag durch die Arbeitsplatte hindurch in den Eckschrank abgesenkt werden.Lift fittings of this type are used, for example, in kitchen corner cabinets and can have one or more shelves arranged one above the other, on which objects can be placed that can be accommodated in the hard-to-reach interior of the corner cabinet by inserting the floors with the lift fitting through the worktop the corner cabinet can be lowered.

Da der Boden die Öffnung der Arbeitsplatte nahezu vollständig ausfüllt, kann es beim Absenken des Liftbeschlages leicht zu Quetschverletzungen kommen, wenn jemand mit der Hand in die Öffnung der Arbeitsplatte greift, während sich der Boden auf die Höhe der Arbeitsplatte absenkt. Es ist bekannt, für diesen Fall eine Notabschaltung vorzusehen, die den Antrieb stillsetzt, wenn der beim Absenken des Liftbeschlages zu überwindende Widerstand einen gewissen Wert übersteigt.Since the floor almost completely fills the opening of the worktop, crushing injuries can easily occur when lowering the lift fitting if someone reaches into the opening of the worktop with their hand while the floor is lowered to the height of the worktop. It is known to provide an emergency shutdown in this case, which shuts down the drive when the resistance to be overcome when lowering the lift fitting exceeds a certain value.

Aufgabe der Erfindung ist es, ein System mit einem Liftbeschlag mit erhöhter Verletzungssicherheit zu schaffen.The object of the invention is to create a system with a lift fitting with increased protection against injury.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Außenseiten des Tragrahmens in horizontaler Richtung zu den Rändern der Öffnung der Arbeitsplatte beabstandet sind, dass der Boden in vertikaler Richtung lose auf dem Tragrahmen aufliegt und in horizontaler Richtung durch vier Eingriffsstrukturen, die die Ecken eines Rechtecks bilden, formschlüssig auf dem Tragrahmen gehalten ist, dass jede Eingriffsstruktur einen vertikal orientierten Steg an einem der Bauteile: Tragrahmen und Boden, und einen dazu komplementären Steckschlitz an dem anderen Bauteil aufweist und die relative Position von Tragrahmen und Boden nur in der horizontalen Richtung rechtwinklig zu dem Steg festlegt, und das für jedes Paar von einander benachbarten Eingriffsstrukturen die Steckschlitze rechtwinklig zu einander orientiert sind.This object is achieved according to the invention in that the outer sides of the support frame are spaced apart in the horizontal direction from the edges of the opening of the worktop, that the bottom rests loosely on the support frame in the vertical direction and in the horizontal direction by four engagement structures that form the corners of a rectangle , is held positively on the support frame that each engagement structure has a vertically oriented web on one of the components: support frame and base, and a complementary plug-in slot on the other component and the relative position of support frame and base only in the horizontal direction at right angles to the Web defines, and that for each pair of adjacent engagement structures, the slots are oriented at right angles to each other.

Durch die Erfindung wird ein mechanisch selbsttätiger Quetschschutz geschaffen, da es aufgrund des nach innen versetzten Tragrahmens nur zu einer Scherbewegung zwischen dem Boden und dem Öffnungsrand der Arbeitsplatte kommt, der Boden sich jedoch nahezu widerstandslos nach oben abheben lässt. Dennoch sorgen die Eingriffsstrukturen dafür, dass der Boden in der Horizontalen in jeder Richtung formschlüssig auf dem Tragrahmen festgelegt ist.The invention creates a mechanically automatic anti-crushing protection, because the inwardly offset supporting frame only causes a shear movement between the floor and the opening edge of the worktop, but the floor can be lifted upwards with almost no resistance. Nevertheless, the engagement structures ensure that the floor is fixed on the support frame in a form-fitting manner in the horizontal in every direction.

Wenn jemand in die Öffnung der Arbeitsplatte eingreift und dadurch beim Absenken des Liftbeschlages der Boden auf einer Seite angehoben wird, so ist mindestens einer der Steckschlitze auf der entgegengesetzten Seite parallel zu der angehobenen Seite des Bodens orientiert, und dieser Steckschlitz und der in diesen eingreifende Steg definieren eine Schwenkachse, um die der Boden geschwenkt werden kann.If someone reaches into the opening of the worktop and the floor is raised on one side when the lift fitting is lowered, at least one of the plug-in slots on the opposite side is oriented parallel to the raised side of the floor, and this plug-in slot and the web engaging in it define a pivot axis around which the floor can be pivoted.

In den Unteransprüchen sind vorteilhafte Ausgestaltungen angegeben, durch die eine weitere Verbesserung der Verletzungssicherheit sowie eine genaue Justierung des Bodens in der Vertikalen und in der Horizontalen ermöglicht wird.In the subclaims, advantageous embodiments are specified, by means of which a further improvement in the protection against injury and an exact adjustment of the floor in the vertical and in the horizontal are made possible.

Im folgenden wird ein Ausführungsbeispiel anhand der Zeichnung näher erläutert.An exemplary embodiment is explained in more detail below with reference to the drawing.

Es zeigen:

Fig. 1
einen erfindungsgemäßen Liftbeschlag in der Draufsicht;
Fig. 2
einen Schnitt längs der Linie II-II in Fig. 1;
Fig. 3
eine Detaildarstellung zu Fig. 2;
Fig. 4
eine perspektivische Ansicht eines Tragrahmens des Beschlages;
Fig. 5
eine Detaildarstellung zu Fig. 4; und
Fig. 6
einen vertikalen Schnitt durch den kompletten Liftbeschlag.
Show it:
Fig. 1
a lift fitting according to the invention in plan view;
Fig. 2
a section along the line II-II in Fig. 1 ;
Fig. 3
a detailed representation too Fig. 2 ;
Fig. 4
a perspective view of a support frame of the fitting;
Fig. 5
a detailed representation too Fig. 4 ; and
Fig. 6
a vertical section through the entire lift fitting.

In Fig. 1 ist ein Liftbeschlag 10 gezeigt, der im Grundriss gesehen in einer Öffnung 12 einer Arbeitsplatte 14 angeordnet ist, beispielsweise einer Küchenarbeitsplatte, die sich über mehrere Unterschränke erstreckt. Die Öffnung 12 und der Liftbeschlag sind dann oberhalb eines Eckschrankes bzw. in dem Eckschrank angeordnet.In Fig. 1 a lift fitting 10 is shown which, viewed in plan, is arranged in an opening 12 of a worktop 14, for example a kitchen worktop, which extends over several base units. The opening 12 and the lift fitting are then arranged above a corner cabinet or in the corner cabinet.

Der Liftbeschlag 10 weist einen Tragrahmen 16 auf, auf dem sich ein Boden 18 abstützt, der im gezeigten Beispiel eine annähernd quadratische Form hat und die Öffnung 12 praktisch vollständig ausfüllt, wenn sich der Boden 18 und die Arbeitsplatte 14 auf gleicher Höhe befinden.The lift fitting 10 has a support frame 16 on which a floor 18 is supported, which in the example shown has an approximately square shape and practically completely fills the opening 12 when the floor 18 and the worktop 14 are at the same height.

Der Tragrahmen weist auf einer Seite eine Halterung 20 auf, mit der er an einer nicht gezeigten vertikalen Säule 21 (Fig. 6) befestigt ist, die sich mit Hilfe eines Motorantriebs 21a in der Höhe verstellen lässt. Der in Fig. 1 gestrichelt dargestellte Boden 18 bildet den obersten Boden des Liftbeschlages und deckt die Säule 21 sowie die Halterung 20 vollständig ab. Weiter unterhalb können sich gleichartige Tragrahmen und Böden befinden (Fig. 6), bei denen jedoch der Boden jeweils an der Stelle der Halterung 20 ausgeklinkt ist, so dass die Säule mit etwas Spiel durch den Boden hindurchgehen kann.The support frame has a holder 20 on one side with which it can be attached to a vertical column 21 (not shown) Fig. 6 ) is attached, which can be adjusted in height with the aid of a motor drive 21a. The in Fig. 1 The bottom 18 shown in dashed lines forms the top bottom of the lift fitting and completely covers the column 21 and the holder 20. Support frames and floors of the same type can be found further below are located ( Fig. 6 ), in which, however, the bottom is notched in each case at the point of the holder 20 so that the column can pass through the floor with some play.

Der Boden 18 ist mit Hilfe von vier Eingriffsstrukturen 22, die die Ecken eines Rechtecks bilden und im gezeigten Beispiel an den Ecken des Tragrahmens und des Bodens angeordnet sind, auf dem Tragrahmen gehalten. Der Außenumfang des Tragrahmens wird durch vier an den Ecken miteinander verbundene Rahmenschenkel 24 gebildet, die in diesem Fall die Form von hochkant stehenden Flachstäben haben. Im Inneren ist der Tragrahmen durch Streben 26 ausgesteift, die V-förmig zu der Position der Halterung 20 zusammenlaufen. Die Eingriffsstrukturen 22 weisen jeweils ein Auflager 30 auf, das einen etwa L-förmigen Grundriss hat und mit dem freien Ende eines seiner Schenkel auf einen der an der betreffenden Ecke zusammenlaufenden Rahmenschenkel 24 aufgesteckt ist und sich auch auf dem dazu rechtwinkligen Rahmenschenkel abstützt. Das Auflager bildet in seiner waagerechten oberen Oberfläche einen geradlinig verlaufenden Steckschlitz 32, in den ein an der Unterseite des Bodens 18 gebildeter Steg 34 eingreift. Auf diese Weise wird die horizontale Position des Bodens18 in der betreffenden Ecke in der Richtung rechtwinklig zu dem Steckschlitz 32 und dem Steg 34 festgelegt.The base 18 is held on the support frame with the aid of four engagement structures 22 which form the corners of a rectangle and, in the example shown, are arranged at the corners of the support frame and the base. The outer circumference of the support frame is formed by four frame legs 24 connected to one another at the corners, which in this case have the shape of upright flat bars. Inside, the support frame is stiffened by struts 26 which converge in a V-shape to the position of the holder 20. The engagement structures 22 each have a support 30, which has an approximately L-shaped plan and is plugged with the free end of one of its legs onto one of the frame legs 24 converging at the relevant corner and is also supported on the frame leg at right angles thereto. In its horizontal upper surface, the support forms a straight-line plug-in slot 32 into which a web 34 formed on the underside of the base 18 engages. In this way, the horizontal position of the base 18 in the relevant corner in the direction at right angles to the plug-in slot 32 and the web 34 is determined.

Die vier Eingriffsstrukturen haben einen identischen Aufbau, sind jedoch in jeweils um 90° gedrehten Positionen angeordnet, so dass die Steckschlitze 32 von zwei Eingriffsstrukturen 22, die einander nicht diagonal gegenüberliegen, sondern benachbart zueinander an derselben Seite des Boden und des Tragrahmens angeordnet sind, rechtwinklig zueinander verlaufen. Insgesamt wird so die Position des Bodens 18 in der Horizontalen in beiden Translationsfreiheitsgraden sowie im Rotationsfreiheitsgrad (Drehung um die vertikale Achse) festgelegt.The four engagement structures have an identical structure, but are arranged in positions rotated by 90 ° so that the plug-in slots 32 of two engagement structures 22, which are not diagonally opposite one another, but are arranged adjacent to one another on the same side of the base and the support frame, are at right angles run towards each other. Overall, the position of the bottom 18 in the horizontal in both translational degrees of freedom and in the rotational degree of freedom (rotation about the vertical axis) is determined.

Die Rahmenschenkel 24 des Tragrahmens weisen zum Rand der Öffnung 12 der Arbeitsplatte in der Horizontalen einen beträchtlichen Abstand auf, wodurch die Gefahr von Quetschungen zwischen der Arbeitsplatte und dem Tragrahmen auf nahezu null verringert wird. Wenn jemand mit der Hand in die Öffnung 12 der Arbeitsplatte greift, während sich der Tragrahmen und der Boden absenken und dabei eine Seite des Bodens an der Hand anstößt, so kann der Boden 18 nach oben leichtgängig von dem Tragrahmen abgehoben werden. Im allgemeinen wird der Boden dabei um eine Achse schwenken, die durch einen der beiden Steckschlitze auf der entgegengesetzten Seite des Bodens definiert wird. Wegen des großen Abstands zwischen der angehobenen Seite des Bodens und dem Steg 34, der in dem die Schwenkachse bildenden Steckschlitz aufgenommen ist, führt der Steg 34 nur eine sehr geringe Kippbewegung in der Richtung senkrecht zum Steckschlitz aus. Der Steg braucht deshalb in dem Steckschlitz allenfalls ein geringes Spiel zu haben. In dem hier gezeigten Beispiel wird das Auflager 30 durch ein Kunststoffteil gebildet, bei dem die Wände des Steckschlitzes eine gewisse Elastizität haben, so dass sie den Steg 34 spielfrei aufnehmen können und dennoch ein Schwenken des Bodens ermöglichen.The frame legs 24 of the support frame are at a considerable horizontal distance from the edge of the opening 12 of the worktop, whereby the risk of crushing between the worktop and the support frame is almost zero is decreased. If someone reaches into the opening 12 of the worktop with his hand while the support frame and the floor are lowering and one side of the floor hits the hand, the floor 18 can be easily lifted upwards from the support frame. In general, the floor will pivot about an axis which is defined by one of the two plug-in slots on the opposite side of the floor. Because of the large distance between the raised side of the base and the web 34, which is received in the plug-in slot forming the pivot axis, the web 34 only performs a very small tilting movement in the direction perpendicular to the plug-in slot. The web therefore needs at most a small amount of play in the plug-in slot. In the example shown here, the support 30 is formed by a plastic part in which the walls of the plug-in slot have a certain elasticity so that they can accommodate the web 34 without play and still allow the base to pivot.

Zumindest die Unterseite des Bodens 18 wird durch ein Kunststoffteil gebildet, das zusätzlich zu den bereits erwähnten Stegen 34 noch weitere Stege 36 aufweist, die die Struktur verstärken und von denen hier nur einige dargestellt sind. Weitere Stege an der Unterseite des Bodens bilden einen umlaufenden Außenrahmen 38 und etwas weiter innerhalb einen umlaufenden Innenrahmen 40. Auch der Innenrahmen 40 liegt jedoch noch außerhalb des Tragrahmens 16.At least the underside of the base 18 is formed by a plastic part which, in addition to the webs 34 already mentioned, has further webs 36 that reinforce the structure and of which only a few are shown here. Further webs on the underside of the base form a circumferential outer frame 38 and a little further inside a circumferential inner frame 40. The inner frame 40, however, also lies outside the support frame 16.

Wenn der Boden 18 auf den Eingriffsstrukturen 22 aufliegt, so wird die Position des Bodens in der Vertikalen nicht durch die Stege 34 und die Steckschlitze 32 bestimmt, sondern vielmehr durch höhenverstellbare Stützteller 42, die in den Innenecken des Tragrahmens 16 angeordnet sind und von dem L-förmigen Auflager 30 umschlossen werden. Mit Hilfe der Stützteller 42 lässt sich die vertikale Position des Bodens 18 an allen vier Ecken so einstellen, dass der Boden exakt parallel zur Ebene der Arbeitsplatte 14 ausgerichtet werden kann.When the base 18 rests on the engagement structures 22, the vertical position of the base is not determined by the webs 34 and the plug-in slots 32, but rather by height-adjustable support plates 42, which are arranged in the inner corners of the support frame 16 and from the L. -shaped supports 30 are enclosed. With the help of the support plate 42, the vertical position of the floor 18 can be adjusted at all four corners so that the floor can be aligned exactly parallel to the plane of the worktop 14.

In der Schnittdarstellung in Fig. 2 verläuft bei der Eingriffsstruktur 22 auf der rechten Seite, die in Fig. 3 noch einmal vergrößert dargestellt ist, die Schnittebene durch den Steckschlitz 32 und den in diesen eingreifenden Steg 34. Unterhalb des Auflagers 30 ist eine waagerecht orientierte Justierschraube 44 angeordnet, die mit einem Gewindeabschnitt in eine Innengewindebohrung des Rahmenschenkels 24 eingeschraubt ist. Am äußeren Umfang weist die Justierschraube 44 eine umlaufende Nut auf, in die ein nach unten vom Auflager 30 vorspringender Flansch 46 eingreift. Der Flansch 46 weist eine nach unten offene U-förmige Aussparung auf, deren Rand in die umlaufende Nut der Justierschraube 44 eingreift. Wenn die Justierschraube 44 gedreht wird, so verändert sich ihre axiale Position in der Richtung rechtwinklig zu dem Steckschlitz 32. Das Auflager 30 nimmt an dieser Bewegung teil, da es auf dem Rahmenschenkel 24, der in Fig. 3 im Schnitt dargestellt ist, nur lose aufliegt und auf dem rechtwinklig dazu verlaufenden Rahmenschenkel, auf den es aufgesteckt ist, verschiebbar ist. Somit kann mit Hilfe der Justierschraube 44 die Position des Steckschlitzes 32 und damit die Position des Steges 34 in der betreffenden Ecke des Bodens 18 eingestellt werden. Insgesamt ermöglichen die Justierschrauben 44 der vier Eingriffsstrukturen 22 eine Einstellung des Bodens 18 in allen Freiheitsgraden der Bewegung in der Horizontalen. Insbesondere kann so der Boden 18 so justiert werden, dass seine Ränder exakt parallel zu den Rändern der Öffnung 12 der Arbeitsplatte verlaufen.In the sectional view in Fig. 2 runs at the engagement structure 22 on the right side, which is shown in FIG Fig. 3 The sectional plane through the plug-in slot 32 and the web 34 engaging in it is shown again enlarged. Below the support 30 there is a horizontally oriented adjusting screw 44, which is screwed with a threaded section into an internally threaded bore of the frame leg 24. On the outer circumference, the adjusting screw 44 has a circumferential groove into which a flange 46 protruding downward from the support 30 engages. The flange 46 has a downwardly open U-shaped recess, the edge of which engages in the circumferential groove of the adjusting screw 44. When the adjusting screw 44 is rotated, its axial position changes in the direction at right angles to the plug-in slot 32. The support 30 takes part in this movement because it rests on the frame leg 24, which is shown in FIG Fig. 3 is shown in section, only rests loosely and is displaceable on the frame leg which extends at right angles thereto and onto which it is attached. Thus, with the aid of the adjusting screw 44, the position of the plug-in slot 32 and thus the position of the web 34 in the relevant corner of the base 18 can be adjusted. Overall, the adjusting screws 44 of the four engagement structures 22 allow an adjustment of the base 18 in all degrees of freedom of movement in the horizontal. In particular, the base 18 can be adjusted in such a way that its edges run exactly parallel to the edges of the opening 12 in the worktop.

In der Schnittdarstellung in Fig. 2 ist weiterhin zu erkennen, dass der an der Unterseite des Bodens 18 gebildete Innenrahmen 40 den durch die Rahmenschenkel 24 gebildeten Außenumfang des Tragrahmens 16 nach unten überragt. Wenn jemand so weit in die Öffnung 12 eingreift, dass er mit dem Tragrahmen 16 in Berührung kommen könnte, so stößt er deshalb zuerst an dem Innenrahmen 40 an und bewirkt so, dass der Boden 18 an der betreffenden Seite vom Tragrahmen abgehoben wird. Unabhängig davon, an welcher Stelle der Innenrahmen 40 auf den Körperteil des Benutzers trifft, wird der Boden 18 auch in der Mitte relativ zu der Mitte des Tragrahmens 16 angehoben. An dieser Stelle sind, wie Fig. 2 zeigt, die beiden Streben 26 des Tragrahmens durch eine Traverse 48 verbunden. Zwei noch weiter nach unten ragende Stege 36 des Bodens 18 sind an dieser Stelle durch eine weitere Traverse 50 verbunden, und zwischen den beiden Traversen 48 und 50 ist ein Schalter 52 angeordnet, der schon ein geringfügiges Anheben des Bodens 18 relativ zum Tragrahmen 16 detektiert und daraufhin den Antrieb für den Liftbeschlag stillsetzt, so dass sich auch der Tragrahmen 16 nicht weiter absenkt. Auf diese Weise können Quetschverletzten auch dann verhindert werden, wenn jemand extrem weit in die Öffnung 12 der Arbeitsplatte hineingreift.In the sectional view in Fig. 2 it can also be seen that the inner frame 40 formed on the underside of the base 18 protrudes downward beyond the outer circumference of the support frame 16 formed by the frame legs 24. If someone engages so far into the opening 12 that he could come into contact with the support frame 16, he therefore first hits the inner frame 40 and thus causes the base 18 on the relevant side to be lifted off the support frame. Regardless of where the inner frame 40 meets the body part of the user, the floor 18 is also raised in the middle relative to the middle of the support frame 16. At this point are how Fig. 2 shows, the two struts 26 of the support frame connected by a cross member 48. Two webs 36 of the base 18, which protrude further downward, are on This point is connected by a further crossbar 50, and a switch 52 is arranged between the two crossbars 48 and 50, which already detects a slight lifting of the base 18 relative to the support frame 16 and then stops the drive for the lift fitting, so that the Support frame 16 is not lowered any further. In this way, crush injuries can also be prevented if someone reaches extremely far into the opening 12 of the worktop.

In Fig. 4 ist der Tragrahmen 16 ohne den Boden 18 in einer perspektivischen Ansicht gezeigt. Man erkennt insbesondere die Anordnung der Auflager 30. Eines dieser Auflager ist in Fig. 5 noch einmal vergrößert dargestellt. Hier ist zu erkennen, dass die vertikalen Wände des Steckschlitzes 32 am oberen Rand Einlaufschrägen für den Steg 34 bilden und am Boden des Steckschlitzes nur durch einen relativ dünnen biegeelastischen Steg 54 verbunden sind. Wenn der Boden 18 beispielsweise auf der in Fig. 4 rechten Seite angehoben wird und somit um eine Achse schwenkt, die durch den in Fig. 5 vergrößert dargestellten Steckschlitz 32 definiert wird, so kann sich dieser Steckschlitz 32 elastisch verformen und damit der leichten Schwenkbewegung des in diesen Steckschlitz eingreifenden Steges 34 folgen. Auf diese Weise wird eine äußerst spielarme oder gar spielfreie Fixierung des Bodens 18 auf den Tragrahmens 16 erreicht und dennoch ein leichtgängiges Anheben und Verschwenken des Bodens 18 ermöglicht.In Fig. 4 the support frame 16 is shown without the bottom 18 in a perspective view. One can see in particular the arrangement of the supports 30. One of these supports is shown in Fig. 5 shown again enlarged. It can be seen here that the vertical walls of the plug-in slot 32 form inlet bevels for the web 34 on the upper edge and are only connected by a relatively thin, flexurally elastic web 54 at the bottom of the plug-in slot. For example, if the floor 18 is on the in Fig. 4 right side is raised and thus swivels around an axis that is determined by the in Fig. 5 is defined enlarged slot 32 shown, this slot 32 can be elastically deformed and thus follow the slight pivoting movement of the web 34 engaging in this slot. In this way, an extremely low-play or even play-free fixing of the base 18 on the support frame 16 is achieved and, nevertheless, a smooth lifting and pivoting of the base 18 is made possible.

Wie Fig. 6 zeigt, ist der gesamte Liftbeschlag 10 in einem schachtartigen Gehäuse 56 aufgenommen, das in die Arbeitsplatte 14 eingelassen ist und an dessen Boden der Motorantrieb 21a für die Säule 21 angeordnet ist. Säule weist an ihrer Außenseite en T-förmiges Führungsprofil 58 auf das verschiebbar durch einen Halter 60 verläuft, der im oberen Bereich des Gehäuses 56 an dessen Seitenwand befestigt ist.How Fig. 6 shows, the entire lift fitting 10 is received in a shaft-like housing 56 which is let into the worktop 14 and on the bottom of which the motor drive 21a for the column 21 is arranged. On its outside, the column has a T-shaped guide profile 58 which extends displaceably through a holder 60 which is fastened in the upper region of the housing 56 to its side wall.

Durch den Eingriff des Führungsprofils in den Halter 60 wird ein Abkippen der Säule 21 (nach links in Fig. 6) auch dann verhindert, wenn die Säule relativ weit nach oben ausgefahren ist.The engagement of the guide profile in the holder 60 prevents the column 21 from tipping (to the left in Fig. 6 ) is prevented even if the column is extended relatively far up.

Claims (8)

  1. A system comprising lifting hardware, a work surface (14), and a base (18) which can be lowered into an opening (12) of the work surface (14), the lifting hardware comprising a support frame (16) which holds the base (18) and can be adjusted vertically relative to the work surface (14) by means of a drive (21a), characterized in that the exterior periphery of the support frame (16) is arranged at a distance from the edges of the opening (12) of the work surface in the horizontal direction; the base (18) rests loosely on the support frame (16) in the vertical direction and is held on the support frame (16) in a form-fitting manner in the horizontal direction by four engagement structures (22) which form the corners of a rectangle; each engagement structure (22) has a vertically oriented web (34) on one of the support frame (16) and the base (18), and a complementary plug-in slot (32) on the other of the support frame and the base and fixes the relative position of the support frame and the base only in the horizontal direction normal to the web (34); and the plug-in slots (32) are oriented at right angles to one another for each pair of mutually adjacent engagement structures (22).
  2. The system according to claim 1, wherein the support frame (16) and the base (18) each have a rectangular contour, and the engagement structures (22) are arranged in the corners of this rectangular contour.
  3. The system according to claim 1 or 2, wherein each engagement structure (22) has a support (30) that is plugged onto a leg (24) of the support frame and forms the plug-in slot (32).
  4. The system according to any of the preceding claims, wherein the plug-in slot (32) is formed by a member of which the parts that define the walls of the plug-in slot (32) are elastically deflectable about a horizontal axis.
  5. The system according to any of the preceding claims, wherein the base has a peripheral frame (40) extending outside of the support frame (16) and projecting downwardly beyond the support frame (16), and wherein a switch (52) is provided for detecting a lift-off movement of the base (18) from the support frame (16) and thereupon controlling the drive such that a downward movement of the lifting hardware is stopped.
  6. The system according to any of the preceding claims, wherein the base is supported on the support frame (16) in the vertical direction via height-adjustable support plates (42).
  7. The system according to any of the preceding claims, wherein each engagement structure (22) has an adjustment screw (44) with which the position of the plug-in slot (32) is adjustable in the direction normal to the slot.
  8. The system according to any of the preceding claims, wherein the support frame (16) is mounted on a column (21) that is extendable by means of the drive (21a), the column having a guide profile (58) that extends along the column and is guided in a holder (60) that is arranged in a fixed position relative to the work surface (14).
EP17816521.3A 2016-12-20 2017-11-27 System comprising lifting hardware Active EP3558060B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202016107168.2U DE202016107168U1 (en) 2016-12-20 2016-12-20 lift fitting
PCT/EP2017/080520 WO2018114235A1 (en) 2016-12-20 2017-11-27 Lifting hardware

Publications (2)

Publication Number Publication Date
EP3558060A1 EP3558060A1 (en) 2019-10-30
EP3558060B1 true EP3558060B1 (en) 2021-03-31

Family

ID=60702628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17816521.3A Active EP3558060B1 (en) 2016-12-20 2017-11-27 System comprising lifting hardware

Country Status (6)

Country Link
US (1) US10660434B2 (en)
EP (1) EP3558060B1 (en)
CN (1) CN110113964A (en)
CA (1) CA3045053C (en)
DE (1) DE202016107168U1 (en)
WO (1) WO2018114235A1 (en)

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JP4379375B2 (en) * 2005-04-19 2009-12-09 パナソニック電工株式会社 Lifting storage device
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CN204071173U (en) * 2014-06-30 2015-01-07 杭州顿力展示道具有限公司 Lift hides parcel tray
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Also Published As

Publication number Publication date
US20190313791A1 (en) 2019-10-17
DE202016107168U1 (en) 2018-03-21
CA3045053A1 (en) 2018-06-28
EP3558060A1 (en) 2019-10-30
WO2018114235A1 (en) 2018-06-28
US10660434B2 (en) 2020-05-26
CA3045053C (en) 2020-12-22
CN110113964A (en) 2019-08-09

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