EP3490410B1 - Dispositif d'entraînement pour déplacer des parties de meubles d'assise et de couchage - Google Patents

Dispositif d'entraînement pour déplacer des parties de meubles d'assise et de couchage Download PDF

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Publication number
EP3490410B1
EP3490410B1 EP17748437.5A EP17748437A EP3490410B1 EP 3490410 B1 EP3490410 B1 EP 3490410B1 EP 17748437 A EP17748437 A EP 17748437A EP 3490410 B1 EP3490410 B1 EP 3490410B1
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EP
European Patent Office
Prior art keywords
lift tube
free end
extension element
drive
drive according
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Application number
EP17748437.5A
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German (de)
English (en)
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EP3490410A1 (fr
Inventor
Sascha Koltzenburg
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Dewertokin Technology Group Co Ltd
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Dewertokin Technology Group Co Ltd
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Publication of EP3490410A1 publication Critical patent/EP3490410A1/fr
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
    • A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors

Definitions

  • the invention relates to a drive for adjusting parts of seating and reclining furniture, wherein a first furniture component is movably mounted relative to a second furniture component, with at least one spindle rotatable via an electric drive motor, an adjusting nut seated on the spindle, which is fixed against rotation in a guide tube guided and can be driven by rotating the spindle in the axial direction of the guide tube, a lifting tube which is in operative connection with the adjusting nut, a first articulation device arranged at the free end of the lifting tube, which can be articulated via a first joint connection on the first furniture component, and one on the opposite one
  • the second articulation device is provided, which can be fastened via a second joint connection to a fixed frame part or to a second furniture component, with an extension element firmly connected to it being provided on at least one of the two articulation devices, on which one joint half of the joint connection is arranged.
  • Adjustment drives of the type mentioned have been known for seating and reclining furniture for some time and have proven themselves very well.
  • the invention is therefore based on the object of being able to use the relatively long, but unproblematic, reliable and inexpensive adjustment drive described above for the movement kinematics for adjusting furniture components when only a limited space is available, such as in hospital beds.
  • this object is achieved in that the joint half seated on the extension element is offset in the direction of the central section of the guide tube, so that the dimension between the connecting bolts of the joint halves in the retracted state of the lifting tube is relatively small and is therefore shortened as desired so that the respective extension element is rigidly attached to the relevant articulation device, that the extension element is directly or indirectly firmly connected to the free end of the lifting tube, that the extension element is designed as a U-shaped bracket, the base of the bracket being attached directly or indirectly to the front end of the lifting tube , the U-legs of the bracket extend parallel to the lifting tube on both sides and the joint halves are arranged in the area of the free ends of the U-legs, or that the extension part is designed as a pot, with the inner surface of the pot base being directly or indirectly connected to it the free end of the lifting tube is connected, or that a crossbar is attached to the free end of the lifting tube, with a flexible rope being guided around the crossbar and to produce.
  • a mechanism has
  • the respective extension element is preferably attached to the relevant articulation device.
  • a first variant is that the extension element is directly or indirectly firmly connected to the free end of the lifting tube.
  • the extension element can be designed as a U-shaped bracket, with the base of the bracket being able to be connected directly or indirectly to the free end of the lifting tube.
  • the U-legs of the bracket extend on both sides of the lifting tube parallel to the lifting tube, while the joint halves are in the area of the free ends of the U-die Ends of the rope can be connected to the ends of the swivel fork of the swivel shaft.
  • the invention makes it possible to avoid the space problem, which is the case when adjusting the head part, for example, because the dimension between the connecting bolts in the retracted state of the lifting tube is relatively small. Thanks to the invention, the adjustment drive described at the beginning can be converted in a very simple manner and with little resources, so that it can be used despite the existing space problem when adjusting the headboard.
  • the invention can basically be based on three different variants.
  • the extension element can be designed as a U-shaped bracket, with the base of the bracket being connected directly or indirectly to the free end of the lifting tube.
  • the U-legs of the bracket extend on both sides of the lifting tube parallel to the lifting tube, while the joint halves are arranged in the area of the free ends of the U-legs.
  • the joint half which serves to connect to the swivel fork of the swivel shaft, is moved towards the middle area of the guide tube and thus the distance between the corresponding joint connections is shortened as desired.
  • the U-bracket can be designed as a stable, multi-ribbed plastic part or cast metal part.
  • the U-bracket can also be made of bent sheet steel.
  • a pin can be provided, for example welded, on the inner surface of the base of the U-bracket, which serves as a connecting element.
  • a pipe pin can be provided, for example welded, on the outer surface of the U-bracket around an opening provided in the base of the U-bracket, which is inserted directly or indirectly onto the free end of the lifting tube and fastened thereto .
  • the U-bracket can be formed from two halves onto which half-shells are molded, so that the half-shells can be screwed directly or indirectly to the free end of the lifting tube or fastened in another way.
  • the U-legs of the U-bracket can be pivotable relative to the base about an axis running transversely to the base, so that the kinematics can be changed.
  • the U-legs of the U-bracket can be provided with lateral projections, the joint halves being formed on the projections so that they are offset from the plane of the U-legs.
  • a second variant is that the extension part is pot-shaped, whereby the inner surface of the pot base can be connected directly or indirectly to the free end of the lifting tube.
  • a third variant of the invention consists in that a crossbar is attached to the free end of the lifting tube and that a flexible rope is guided around the crossbar, the ends of which can be connected to the swivel fork of the swivel shaft.
  • a further embodiment of the invention consists in that the extension element is arranged on the side of the adjusting drive facing away from the free end of the lifting tube, whereby the dimension between the connecting bolts can also be shortened.
  • the extension element can be designed as a U-bracket, the base of which is attached to the articulation device, while the U-legs extend parallel to the lifting tube on both sides.
  • the joint halves are expediently arranged in the area of the free ends of the U-legs.
  • each extension element forms a firm connection with the adjustment drive. If the extension element is inherently rigid and therefore non-articulated and therefore does not have any flexible or articulated sections, the adjustment drive connected to it can use its adjustment force without restriction transferred to the furniture or the respective furniture element in both directions of movement. For safety reasons, for example, some furniture requires adjustment using motor power only in one direction of movement. The reset in the other direction of movement is then carried out by gravity and/or by spring force. According to such an embodiment of the adjustment drive, the lifting tube is simply acted upon inside by the force and movement-generating adjustment nut. While the adjusting nut remains stationary on the spindle in the resting state, the lifting tube has the option of moving away from the adjusting nut all the way to an internal end stop.
  • the lifting tube can therefore move freely between the first limitation given by the adjusting nut and a second limitation.
  • the end of the lifting tube located in the adjusting drive is now only loosely contacted by the adjusting nut and can be acted upon by the adjusting and holding force.
  • the adjusting nut is in operative connection with the lifting tube, in that the adjusting nut is either firmly connected to the lifting tube or makes loose contact with the lifting tube.
  • the adjustment drive is designed to adjust furniture components relative to one another.
  • part of the adjustment drive either remains stationary, such as on a fixed frame part, or the adjustment drive can be pivoted about a point, or the adjustment drive moves during the adjustment process, viewed from a fixed point in space.
  • the known adjustment drive which is used to adjust parts of seating and reclining furniture, consists of an electric drive motor 1, a rotatably mounted threaded spindle 2 that can be driven by the drive motor 1, and an adjusting nut 3 seated on the threaded spindle 2, which is non-rotatable is guided in a guide tube 4 and can be driven by rotating the threaded spindle 2 in the axial direction of the guide tube 4.
  • a lifting tube 5 connected to the adjusting nut 3 is provided, at the free end of which a first articulation device 6 in the form of a fork head is provided, which can be articulated via a first joint connection 7 on the swivel fork 8 of a swivel shaft 9, as shown Fig. 4 emerges.
  • a second articulation device 10 in the form of a fork head is provided at the motor-side end of the adjustment drive, which is connected via an articulated connection 11 to a fixed frame part 12 of the furniture as shown Fig. 4 can be attached.
  • an extension element 13 is rigidly attached to the articulation device 6 or to the free end of the lifting tube 5.
  • the extension element 13 can be attached in various ways.
  • the extension element 13 is designed as a U-shaped bracket 18, the base 19 of which is attached to the front end of the lifting tube 5.
  • the U-legs 20 of the bracket 18 extend on both sides of the lifting tube 5 parallel to it, with the joint halves 15 being arranged in the area of the free ends of the U-legs 20. Due to the fact that the U-legs 20 are arranged parallel to the lifting tube 5, a force direction that runs exactly in the longitudinal axis of the lifting tube 5 is specified.
  • the U-bracket 18 is designed as a stable, multi-ribbed plastic part or cast metal part 21, the ribs being very stably connected to one another by cross struts.
  • Fig. 4 is an installation example for the adjustment drive according to Fig. 3 shown. For reasons of clarity, only part of a bed frame is shown, diagonally from below.
  • Fig. 4 how out Fig. 4 can be seen in detail, the joint halves 15 of the U-bracket 18 are in engagement with corresponding joint halves 16 provided on the swivel fork 8.
  • the pivot fork 8 is used to pivot a pivot shaft 9, with which corresponding actuating arms 38 are provided for lifting a head part, not shown in the drawing.
  • the second articulation device 10 provided at the motor-side end of the adjustment drive is connected by means of its articulated connection 11 to a corresponding counterpart which is attached to a fixed frame part 12 of the furniture, the joint half of the articulation device 10 designed as a fork head being connected to the joint half 16 sitting on the frame part 12 interacts.
  • the U-bracket 22 is made from a bent sheet steel.
  • a pin 23 is welded to the inner surface of the base 19 of the U-bracket 18 and is firmly connected to the free end of the lifting tube 5.
  • the joint halves 15 are designed as simple eyelets, which interact with the joint halves provided on the swivel fork 8 and designed in the form of bolts.
  • the location of the joint halves is towards the middle section 17 of the guide tube 4 shifted so that the dimension between the connection bolts is significantly shortened.
  • a pipe pin 26 is welded to the outer surface of the U-bracket 22 around a corresponding opening, which is plugged onto the lifting tube 5 and is indirectly connected to the lifting tube via any fastening element.
  • the U-bracket 22 consists of two bracket halves 24, onto each of which a half-shell 25 is formed.
  • the half-shells 25 encompass the free end of the lifting tube 5 or an extension part fastened therein and are fastened to it with the aid of a transversely arranged screw.
  • the U-legs 27 of the U-bracket 22 can be pivoted relative to the base 19 about an axis running transversely to the base 19, so that the adjustment drive can also be adapted to a modified movement kinematics.
  • the U-bracket 22 is again made from a bent sheet metal part.
  • the U-legs 27 of the U-bracket 22 are provided with lateral projections 28.
  • the joint halves 15, which are designed as bores, are arranged on the projections 28 and are therefore offset from the plane of the U-legs 27.
  • the extension element 13 connected to the free end of the lifting tube 5 is designed as a pot 29, the inner surface of the pot base being connected directly or indirectly to the free end of the lifting tube 5.
  • a crossbar 30 is attached to the free end of the lifting tube 5, around which a flexible rope 31 is guided.
  • the ends of the rope 31 can be connected to the swivel fork 8 of the swivel shaft 9.
  • the ends of the rope 31 are designed as loops 37, which can be easily attached to the swivel fork 8 using suitable connecting elements.
  • the rope 31 is captively clipped to the crossbar 30.
  • the extension element 14 is arranged on the side of the adjusting drive facing away from the free end of the lifting tube 5, i.e. on the motor side.
  • the extension element is designed as a U-bracket 32, the base 33 of which is attached to the motor-side articulation device 10.
  • the U-legs 34 extend on both sides of the guide tube 4 or lifting tube 5 parallel to it.
  • the joint halves 15, which in the present case are designed as bores, are arranged in the area of the ends of the U-legs 34, so that the dimension between the connecting bolts can be significantly reduced, just as in the previous exemplary embodiments.
  • corresponding extension elements 35, 36 are arranged at both ends of the adjusting drive on its articulation devices 6 and 7, which are designed as shaped sheet metal parts.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Transmission Devices (AREA)
  • Legs For Furniture In General (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Invalid Beds And Related Equipment (AREA)

Claims (11)

  1. Dispositif d'entraînement pour déplacer des parties de meubles d'assise et de couchage, dans lequel un premier élément de meuble est supporté de manière mobile par rapport à un deuxième élément de meuble, le dispositif d'entraînement comprenant:
    - au moins une broche (2) pouvant être entraînée en rotation par un moteur électrique (1),
    - un écrou de réglage (3) monté sur la broche (2), guidé de manière non rotative dans un tube de guidage (4) et adapté pour être entraîné par la rotation de la broche (2) dans la direction axiale du tube de guidage (4),
    - un tube de levage (5) relié de manière opérationnelle à l'écrou de réglage (3),
    - un premier dispositif d'articulation (6) disposé à une extrémité libre du tube de levage (5) pour l'articulation à un premier joint articulé (7) sur le premier élément de meuble, et
    - un deuxième dispositif d'articulation (10) placé à l'extrémité opposée du dispositif d'entraînement et pouvant être fixé à une partie de cadre fixe (12) ou à un deuxième élément de meuble par l'intermédiaire d'un deuxième joint articulé (11), dans lequel un premier élément d'extension (13; 14) est placé sur au moins un de ces deux dispositifs d'articulation (6; 10) et y est relié de manière rigide, un demi-joint (15; 16) du joint articulé (7; 11) étant placé dans chaque cas sur cet élément d'extension,
    - dans lequel le demi-joint (15; 16) situé sur l'élément d'extension respectif (13; 14) est décalé vers la section centrale (17) du tube de guidage (4) de sorte que la dimension entre les boulons de connexion des demi-joints (15; 16) à l'état rétracté du tube de levage (5) est relativement petite et donc arbitrairement raccourcie,
    - dans lequel l'élément d'extension respectif (13; 14) est fixé de manière rigide au dispositif d'articulation correspondant (6; 10),
    - dans lequel l'élément d'extension (13) est rigidement relié directement ou indirectement à l'extrémité libre du tube de levage (5), caractérisé en ce que
    - l'élément d'extension (13) est conçu comme un étrier en forme de U (18), dans lequel la base (19) de l'étrier (18) est fixée directement ou indirectement à l'extrémité avant du tube de levage (5), les branches du U (20) de l'étrier (18) des deux côtés du tube de levage (5) s'étendent parallèlement à celui-ci et les demi-joints (15) sont disposées dans la région des extrémités libres des branches du U (20), ou
    - l'élément d'extension est formé comme un pot (29), la surface intérieure du fond du pot étant reliée directement ou indirectement à l'extrémité libre du tube de levage (5), ou
    - un étrier transversal (30) est fixé à l'extrémité libre du tube de levage (5), une corde flexible (31) étant passée autour ledit étrier transversal (30) et les extrémités de la corde (31) sont connectables à la fourche de pivot (8) de l'arbre de pivot (9).
  2. Dispositif d'entraînement selon la revendication 1, caractérisé en ce que l'étrier en U est formé comme une pièce plastique stable à nervures multiples ou une pièce métallique moulée (21).
  3. Dispositif d'entraînement selon la revendication 1, caractérisé en ce que l'étrier en U (18) est formé d'une tôle d'acier pliée.
  4. Dispositif d'entraînement selon la revendication 3, caractérisé en ce qu'un tenon (23) est soudée à la surface intérieure de la base de l'étrier en U (18), tenon qui est relié à l'extrémité libre du tube de levage (5) .
  5. Dispositif d'entraînement selon la revendication 3, caractérisé en ce qu'un tenon de tube (26) est soudé à la surface extérieure de l'étrier en U (18) autour d'une ouverture prévue dans la base (19) de l'étrier en U (18) et qu'il est enfiché indirectement ou directement sur l'extrémité libre du tube de levage (5) et fixé à celle-ci.
  6. Dispositif d'entraînement selon la revendication 1, caractérisé en ce que l'étrier en U (22) est formé de deux moitiés (24), que des demi-coquilles (25) sont moulées sur les moitiés (24) et que les demi-coquilles (25) sont vissées indirectement ou directement sur l'extrémité libre du tube de levage (5).
  7. Dispositif d'entraînement selon la revendication 1, caractérisé en ce que les branches de U (27) de l'étrier en U (22) peuvent pivoter par rapport à la base (18) autour d'un axe s'étendant transversalement à la base (19).
  8. Dispositif d'entraînement selon la revendication 3, caractérisé en ce que les branches de U (27) de l'étrier en U (22) ont des saillies latérales (28) et que les demi-joints (15) sont formés sur les saillies (28) et sont décalés par rapport au plan des étriers en U.
  9. Dispositif d'entraînement selon la revendication 1, caractérisé en ce que l'élément d'extension (14) est disposé sur le côté du dispositif d'entraînement de déplacement orienté à l'opposé de l'extrémité libre du tube de levage (5).
  10. Dispositif d'entraînement selon la revendication 9, caractérisé en ce que l'élément d'extension (14) est conçu comme un étrier en U (32), que la base (33) de l'étrier en U (32) est fixée au dispositif d'articulation (10), que les branches de U (34) s'étendent parallèlement au tube de levage (5) des deux côtés de celui-ci et que les demi-joints (15) sont disposés dans la région des extrémités libres des branches de U (34).
  11. Dispositif d'entraînement selon la revendication 1, caractérisé en ce que des éléments d'extension correspondants (35, 36) sont disposés sur les dispositifs d'articulation (6, 10) aux deux extrémités de l'entraînement de déplacement.
EP17748437.5A 2016-07-29 2017-07-24 Dispositif d'entraînement pour déplacer des parties de meubles d'assise et de couchage Active EP3490410B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202016104185.6U DE202016104185U1 (de) 2016-07-29 2016-07-29 Antrieb zum Verstellen von Teilen von Sitz- und Liegemöbeln
PCT/EP2017/068672 WO2018019784A1 (fr) 2016-07-29 2017-07-24 Dispositif d'entraînement pour déplacer des parties de meubles d'assise et de couchage

Publications (2)

Publication Number Publication Date
EP3490410A1 EP3490410A1 (fr) 2019-06-05
EP3490410B1 true EP3490410B1 (fr) 2023-10-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17748437.5A Active EP3490410B1 (fr) 2016-07-29 2017-07-24 Dispositif d'entraînement pour déplacer des parties de meubles d'assise et de couchage

Country Status (5)

Country Link
US (1) US10716406B2 (fr)
EP (1) EP3490410B1 (fr)
CN (1) CN109715014B (fr)
DE (1) DE202016104185U1 (fr)
WO (1) WO2018019784A1 (fr)

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DE202019103356U1 (de) 2019-06-14 2020-09-15 Dewertokin Gmbh Entstörter Linearantrieb
USD939000S1 (en) * 2019-11-08 2021-12-21 Dewertokin Technology Group Co., Ltd. Actuator
USD956118S1 (en) * 2019-11-18 2022-06-28 Dewertokin Kft Fitting for furniture
TWI803397B (zh) * 2022-07-21 2023-05-21 施權航 電動床

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Also Published As

Publication number Publication date
EP3490410A1 (fr) 2019-06-05
US20190254436A1 (en) 2019-08-22
WO2018019784A1 (fr) 2018-02-01
CN109715014B (zh) 2021-08-24
US10716406B2 (en) 2020-07-21
DE202016104185U1 (de) 2017-11-02
CN109715014A (zh) 2019-05-03

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