EP2981189B1 - Dispositif d'entraînement pour meuble - Google Patents

Dispositif d'entraînement pour meuble Download PDF

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Publication number
EP2981189B1
EP2981189B1 EP14708790.2A EP14708790A EP2981189B1 EP 2981189 B1 EP2981189 B1 EP 2981189B1 EP 14708790 A EP14708790 A EP 14708790A EP 2981189 B1 EP2981189 B1 EP 2981189B1
Authority
EP
European Patent Office
Prior art keywords
gear
helical spring
furniture
furniture drive
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
EP14708790.2A
Other languages
German (de)
English (en)
Other versions
EP2981189A1 (fr
Inventor
Wolfgang Bohle
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
Application filed by Julius Blum GmbH filed Critical Julius Blum GmbH
Publication of EP2981189A1 publication Critical patent/EP2981189A1/fr
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Publication of EP2981189B1 publication Critical patent/EP2981189B1/fr
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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
    • A47B88/457—Actuated drawers operated by electrically-powered actuation means
    • 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
    • A47B88/463—Actuated drawers operated by mechanically-stored energy, e.g. by springs self-opening
    • 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
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings

Definitions

  • the present invention relates to a furniture drive with the features of the preamble of claim 1 for ejecting a movable furniture part from a closed end position relative to a furniture body.
  • the invention relates to an arrangement with a drawer and with a furniture drive of the type to be described, as well as a piece of furniture with such an arrangement.
  • AT 503 139 B1 describes a furniture drive with the features of the preamble, wherein a helical spring is arranged in a slip clutch.
  • a non-generic drive for motorized adjustment of a tailgate of a vehicle is disclosed.
  • the drive train is designed to be non-self-locking.
  • a planetary gear is used as an overload clutch, a gear braking device being assigned to a ring gear of the planetary gear.
  • the ring gear is braked by means of the gear brake device, a wrap spring of the gear brake device being in braking engagement with a brake part. In the event of an overload, one end of the wrap spring is released from the brake part until the wrap spring finally slips through on the brake part.
  • WO 2007/090210 A2 discloses an ejector device for a furniture part mounted movably relative to a furniture body, the ejector device having an ejector lever which can be ejected by a drive unit. If a predetermined torque is exceeded, the drive unit and the ejector lever can be decoupled from one another by a slip clutch.
  • the slip clutch is used to avoid damage to the drive unit, which can be caused by excessive exertion of force on the ejector lever coupled to the drive unit.
  • the object of the present invention is therefore to largely reduce the noise generated by generic furniture drives.
  • the ejection lever acts on the movable furniture part during the ejection process, then in most cases there is a sufficient load anyway, which ensures that the gear unit runs smoothly.
  • the ejector lever is load-free, which means that the self-locking of the gear to be braked is also low. This low self-locking of the gear is noticeable through audible vibrations of the gear.
  • the basic idea of the invention now consists in imposing a load on the gear with the aid of a braking device so that the self-locking of the gear - in particular during the return movement of the ejector lever - is increased. In this way, the vibrations that occur in the transmission can be suppressed and the undesired noises can be reduced considerably.
  • the movement of the gear is thus braked by the frictional effect, with the braking device resting directly on a friction surface of the gear to be braked.
  • the friction surface of the gearwheel is smooth, it is preferably provided that the friction surface is formed by a flat or cylindrical surface of the gearwheel to be braked.
  • At least one helical spring can be used, by means of which a movement of the gear to be braked can be braked. It is preferably provided that the helical spring is arranged with one end region on a part fixed to the housing. The coil spring mounted on the part fixed to the housing is rotated with the gearwheel during the ejection movement of the ejection lever and changes its shape depending on the rotational position of the gearwheel to be braked.
  • the arrangement according to the invention is characterized by a movable furniture part, in particular a drawer, with a furniture drive of the type described.
  • the furniture according to the invention has at least one arrangement of the type mentioned above.
  • Fig. 1 shows a piece of furniture 1 with a furniture body 2 in a perspective view, wherein movable furniture parts 3 in the form of drawers can each be ejected from the closed end position into an open position by a furniture drive 4.
  • the furniture drive 4 is fastened to a rear wall 8 connected to the furniture body 2, but preferably a support rail (not shown here) is provided which has at least two predetermined fastening positions along its longitudinal extension for mounting furniture drives 4.
  • the furniture drive 4 comprises a movably mounted ejector lever 7 which, in the position of use, is mounted pivotably about a vertically extending axis.
  • the furniture drive 4 can be easily triggered by a touch-latch functionality.
  • a sensor preferably a rotary potentiometer, is provided for detecting the angular position of the ejector lever 7.
  • the signals from the sensor can be fed to a drive control unit, and that the electric drive unit 10 ( Fig. 2a ) of the furniture drive 4 can be activated by the drive control unit.
  • Fig. 2a shows the furniture drive 4 in a partial exploded view.
  • the furniture drive 4 comprises a housing 9, an electric drive unit 10 in the form of a DC motor, a gear 11 with gear wheels 13, 14, 15, 16 designed as double gears, and an ejector lever 7 pivoted about an axis of rotation 12 Gear 16 rotatably connected.
  • the gear 11 is designed as a multi-stage reduction gear so that the high speed of the electric drive unit 10 is reduced and a high torque can be transmitted to the ejector lever 7.
  • a braking device 18 with a helical spring 19 is provided, by means of which a movement of the gear 14 can be braked.
  • Fig. 3a shows the gear 14 to be braked in a perspective view from below.
  • the toothed wheel 14 comprises two toothed sections 25 and 26, preferably completely surrounding the toothed wheel 14.
  • the toothed wheel 14 is provided with a central opening 27 for receiving the journal 22 and with a preferably annular groove 28.
  • the braking device 18 with the helical spring 19 is - with the exception of the leg 20 - received completely within the annular groove 28, which results in a particularly space-saving and compact construction.
  • the leg 20 of the helical spring 19 engages in the opening 24 in the assembly position ( Figure 2b ) a.
  • the friction surface 31 is formed by a cylindrical groove wall 29 of the gear wheel 14.
  • a diameter of the helical spring 19 is increased by the frictional effect between the groove wall 29 and the helical spring 19, as a result of which a pressure force of the helical spring 19 on the groove wall 29 of the gear wheel 14 decreases and a diameter of the helical spring 19 when the ejector lever 7 moves against the opening direction is reduced by the frictional effect between the groove wall 29 and the helical spring 19, with a pressure force of the helical spring 19 on the groove wall 29 of the gear 14 increasing.
  • Figure 4a shows a further embodiment of the invention, the structure of the furniture drive 4 in principle Figure 2b corresponds to.
  • the braking device 18 instead of the previously described helical spring 19, the braking device 18 now has a rubber ring 30.
  • the rubber ring 30 has a sufficiently high coefficient of friction and brakes a rotation of the gear wheel 14 by sliding friction.
  • the rubber ring 30 has a cylindrical recess 32 through which the rubber ring 30 can be slipped onto the bearing pin 22.
  • the part 23 fixed to the housing is formed on the bearing 21 in this figure, the rubber ring 30 in the assembled position on the one hand with the part 23 fixed to the housing, on the other hand with a friction surface 31 formed on the gear 14 to be braked ( Figure 4b ) interacts.
  • the gears 13, 14, 15 and 16 can be moved via a worm 17 of the electric drive 10.
  • FIG. 11 shows a perspective view of the transmission 11 according to the exemplary embodiment of FIG Figure 4b .
  • the rubber ring 30 which is arranged on the bearing 21 and is effective between the part 23 fixed to the housing and the gear 14 can be seen.
  • the gear wheel 14 has a smooth or flat side surface 33 which, in the exemplary embodiment shown, forms the friction surface 31 for the rubber ring 30.
  • the gear wheel 14 is always braked by the rubber ring 30, so that the electric drive 10 also has to overcome the braking force of the rubber ring 30 when the ejector lever 7 is moved in the opening direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • Drawers Of Furniture (AREA)
  • Braking Arrangements (AREA)

Claims (14)

  1. Mécanisme d'entraînement pour meuble (4) pour éjecter une partie de meuble mobile (3) depuis une position finale fermée par rapport à un corps de meuble (2), comprenant:
    - un boîtier (9),
    - une unité d'entraînement électrique (10) disposée dans le boîtier,
    - un levier éjecteur (7) pouvant être entraîné par l'unité d'entraînement électrique (10) pour éjecter la partie de meuble mobile (3),
    - un jeu d'engrenages (11) avec au moins une roue dentée (14) pour la transmission d'une force de l'unité d'entraînement électrique (10) sur le levier éjecteur (7),
    caractérisé en ce que le mécanisme d'entraînement pour meuble (4) présente un dispositif de freinage (18) pour le freinage de la au moins une roue dentée (14), dans lequel le dispositif de freinage (18) est directement adjacent à une surface de frottement (31) de la roue dentée (14) devant être freinée.
  2. Mécanisme d'entraînement pour meuble selon la revendication 1, caractérisé en ce que la surface de frottement (31) de la roue dentée (14) est conçue lisse, dans lequel il est prévu, de préférence, que la surface de frottement (31) est formée d'une surface plane ou cylindrique de la roue dentée (14) devant être freinée.
  3. Mécanisme d'entraînement pour meuble selon la revendication 1 ou 2, caractérisé en ce que le dispositif de freinage (18) interagit, d'une part, avec la surface de frottement (31) de la roue dentée, d'autre part, avec une partie solidaire du boîtier (23).
  4. Mécanisme d'entraînement pour meuble selon l'une des revendications 1 à 3, caractérisé qu'un palier (21) avec un tourillon (22) est prévu pour le logement de la roue doutée (14) devant être freinée, dans lequel la roue dentée (14) est logée de façon rotative par rapport à ce tourillon (22).
  5. Mécanisme d'entraînement pour meuble selon l'une des revendications 1 à 4, caractérisé en ce que le dispositif de freinage (18) présente au moins un anneau en caoutchouc (30) lequel interagit avec la surface de frottement (31) de la roue dentée, de préférence avec une surface latérale plane (33) de la roue dentée (14).
  6. Mécanisme d'entraînement pour meuble selon l'une des revendications 1 à 4, caractérisé en ce que le dispositif de freinage (18) présente au moins un ressort cylindrique (19).
  7. Mécanisme d'entraînement pour meuble selon la revendication 6, caractérisé en ce que le ressort cylindrique (19) est relié avec une zone terminale, de préférence par une branche (20) du ressort cylindrique (19), à une partie solidaire du boîtier (23).
  8. Mécanisme d'entraînement pour meuble selon la revendication 7, caractérisé en ce que le palier (21) présente une ouverture (24), dans laquelle est insérée la branche (20) du ressort cylindrique (19).
  9. Mécanisme d'entraînement pour meuble selon l'une des revendications 6 à 8, caractérisé en ce que le ressort cylindrique (19) entoure au moins par sections le tourillon (22).
  10. Mécanisme d'entraînement pour meuble selon l'une des revendications 6 à 9, caractérisé en ce que la roue dentée (14) présente une gorge - de préférence annulaire - (28), le ressort cylindrique (19) étant adjacent à une paroi de gorge (29).
  11. Mécanisme d'entraînement pour meuble selon la revendication 10, caractérisé en ce que lors d'un mouvement du levier éjecteur (7) dans le sens d'ouverture, un diamètre du ressort cylindrique (19) est agrandi par frottement entre la paroi de gorge (29) et le ressort cylindrique (19), ce par quoi une force de pression du ressort cylindrique (19) sur la paroi de gorge (29) de la roue dentée (14) diminue et dans lequel, lors d'un mouvement du levier éjecteur (7) à l'encontre du sens d'ouverture, un diamètre du ressort cylindrique (19) est réduit par frottement entre la paroi de gorge (29) et le ressort cylindrique (19), dans lequel une force de pression du ressort cylindrique (19) sur la paroi de gorge (29) de la roue dentée (14) augmente.
  12. Mécanisme d'entraînement pour meuble selon l'une des revendications 1 à 11, caractérisé en ce que le levier éjecteur (7) est logé de façon pivotante, dans lequel il est prévu, de préférence, que l'axe de rotation (12) du levier éjecteur (7) en position d'utilisation du mécanisme d'entraînement pour meuble (4) passe verticalement.
  13. Dispositif avec un mécanisme d'entraînement pour meuble mobile (3), plus particulièrement d'un tiroir, et avec un mécanisme d'entraînement pour meuble (4) selon l'une des revendications 1 à 12.
  14. Meuble avec au moins un dispositif selon la revendication 13.
EP14708790.2A 2013-04-05 2014-02-10 Dispositif d'entraînement pour meuble Active EP2981189B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA256/2013A AT513756B1 (de) 2013-04-05 2013-04-05 Möbelantrieb
PCT/AT2014/000028 WO2014161013A1 (fr) 2013-04-05 2014-02-10 Dispositif d'entraînement pour meuble

Publications (2)

Publication Number Publication Date
EP2981189A1 EP2981189A1 (fr) 2016-02-10
EP2981189B1 true EP2981189B1 (fr) 2021-05-26

Family

ID=50239346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14708790.2A Active EP2981189B1 (fr) 2013-04-05 2014-02-10 Dispositif d'entraînement pour meuble

Country Status (6)

Country Link
EP (1) EP2981189B1 (fr)
JP (1) JP6154062B2 (fr)
CN (1) CN105072953B (fr)
AT (1) AT513756B1 (fr)
ES (1) ES2880614T3 (fr)
WO (1) WO2014161013A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6783693B2 (ja) * 2017-03-28 2020-11-11 株式会社Ｌｉｘｉｌ 引出構造
AT523881A1 (de) 2020-06-05 2021-12-15 Blum Gmbh Julius Einrichtung zum Steuern von zumindest einem elektrisch antreibbaren oder verstellbaren Möbelelement
AT523870A1 (de) 2020-06-05 2021-12-15 Blum Gmbh Julius Einrichtung zum Empfangen von Signalen durch zumindest ein elektrisch antreibbares oder verstellbares Möbelelement
CN111772376A (zh) * 2020-07-10 2020-10-16 广州思薇梦家居有限公司 一种方便拉动防卡住的可通风抽屉

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20207519U1 (de) * 2002-05-13 2002-07-25 Rose & Krieger Gmbh Co Kg Elektromotorischer Stellantrieb
AT413472B (de) * 2004-08-16 2006-03-15 Blum Gmbh Julius Ausstossvorrichtung für ein bewegbares möbelteil
DE202005006716U1 (de) * 2005-04-27 2005-07-14 Moll System- und Funktionsmöbel GmbH Möbel mit synchronisiert geführtem Auszug
AT502939A1 (de) * 2005-04-28 2007-06-15 Blum Gmbh Julius Möbel
AT503139B1 (de) * 2006-02-08 2009-02-15 Blum Gmbh Julius Ausstosser mit rutschkupplung
AT505119A1 (de) * 2007-04-23 2008-11-15 Blum Gmbh Julius Antrieb für ein bewegbares möbelteil
DE202007006687U1 (de) * 2007-05-07 2008-09-18 Hettich-Oni Gmbh & Co. Kg Ausstoßvorrichtung für bewegliche Möbelteile
AT507041A1 (de) * 2008-06-19 2010-01-15 Blum Gmbh Julius Möbelantrieb
DE202008016929U1 (de) * 2008-12-23 2010-05-20 BROSE SCHLIEßSYSTEME GMBH & CO. KG Antrieb zur motorischen Verstellung eines Verstellelements eines Kraftfahrzeugs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN105072953B (zh) 2017-09-26
CN105072953A (zh) 2015-11-18
JP2016514552A (ja) 2016-05-23
AT513756B1 (de) 2014-07-15
ES2880614T3 (es) 2021-11-25
JP6154062B2 (ja) 2017-06-28
EP2981189A1 (fr) 2016-02-10
WO2014161013A1 (fr) 2014-10-09
AT513756A4 (de) 2014-07-15

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