EP3955773B1 - Dispositif rétractable pour une partie mobile - Google Patents

Dispositif rétractable pour une partie mobile Download PDF

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Publication number
EP3955773B1
EP3955773B1 EP20712527.9A EP20712527A EP3955773B1 EP 3955773 B1 EP3955773 B1 EP 3955773B1 EP 20712527 A EP20712527 A EP 20712527A EP 3955773 B1 EP3955773 B1 EP 3955773B1
Authority
EP
European Patent Office
Prior art keywords
lever
retraction device
movable part
end position
connecting element
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
EP20712527.9A
Other languages
German (de)
English (en)
Other versions
EP3955773A1 (fr
Inventor
Gunter Behrmann
Florian Hartmann
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.)
Paul Hettich GmbH and Co KG
Original Assignee
Paul Hettich GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Paul Hettich GmbH and Co KG filed Critical Paul Hettich GmbH and Co KG
Publication of EP3955773A1 publication Critical patent/EP3955773A1/fr
Application granted granted Critical
Publication of EP3955773B1 publication Critical patent/EP3955773B1/fr
Active legal-status Critical Current
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/453—Actuated drawers
    • A47B88/46—Actuated drawers operated by mechanically-stored energy, e.g. by springs
    • A47B88/467—Actuated drawers operated by mechanically-stored energy, e.g. by springs self-closing

Definitions

  • the present invention relates to a retraction device for a movable part, in particular for a furniture part, with a lever rotatably mounted on a housing, which can be coupled to the movable part in an angular range between two end positions in order to brake or accelerate the movable part, wherein the Lever is pre-stored into an end position via an energy accumulator, the lever being articulated with a connecting element guided along a guide track formed on the housing, the guide path being linear and the energy accumulator being connected to the connecting element on the side facing away from the lever.
  • a pull-out guide with a damping device in which a driver that can be coupled to the pull-out guide is linearly guided on a housing, the driver transmitting damping forces of a linear pressure damper via a rotatably mounted lever.
  • the distance between the pressure damper and the driver must be comparatively large.
  • the EP 1 816 927 discloses a drive device for a pull-out guide, in which a tilting segment can either be moved along a guide track with an arcuate end section or is mounted rotatably about an axis. In both cases there is the problem that the tilting segment, which is prestressed by a force accumulator, releases the forces on a driver quite abruptly, which is noticeable to the user when moving the movable furniture part. This also shows a similar tilting device for holding a drawer GB 1,117,071 .
  • a rotatably mounted lever which has a predetermined angular range between two End positions can be coupled to a movable part, the lever being articulated with a connecting element guided along a guide track.
  • force can be transmitted to the lever via the connecting element, in particular through the energy storage and optionally a damper. This enables the coupling between the linearly acting energy storage and the rotatably mounted lever.
  • the energy storage When the rotatably mounted lever moves from a first end position to a second end position, the energy storage preferably passes through a maximum in terms of spring force.
  • the rotatably mounted lever can thus be held in an end position by the tensioned energy storage when a dead center is exceeded.
  • the dead center is the point at which the energy storage exerts the greatest force on the rotatable lever. If this is exceeded, the direction of action of the energy storage on the rotatable lever changes.
  • the rotatable lever is thus prestressed in a first end position in a first direction of rotation by the energy accumulator and in an opposite second end position it is prestressed in the opposite second direction of rotation. This ensures a stable fixation of the rotatable lever and thus also the movable part coupled to it in the respective end position.
  • the lever of the retraction device can be decoupled from the movable part in both end positions. This means that, for example, an end position of a drawer can be specified by other stops and the retraction device only serves to brake the drawer. This enables the elimination of slippage between the rails of a drawer slide.
  • the energy storage is connected to the connecting element on the side facing away from the lever.
  • the connecting element and the energy storage can be arranged adjacently, which leads to a compact design.
  • the lever is rotatably mounted on a housing on which the guide track for the connecting element is formed.
  • the guideway only runs linearly.
  • the connecting element can be connected in an articulated manner to a carriage guided in the guide track.
  • the connecting element can, for example, be designed as a rod which can be moved together with the carriage on one side and is connected in an articulated manner to the lever on the opposite side.
  • the connecting element can also have a molded-on bearing element, for example can be moved and rotated in the guideway using a pin.
  • a damper which brakes the movement of the lever towards an end position.
  • the damper can be connected to the connecting element on the side facing away from the lever, so that the damper and the connecting element are arranged adjacent to one another.
  • the lever can be moved over an angular range between the end positions of 60° and 120° in order to be coupled to the movable part.
  • the lever can be coupled, for example, by the lever having a groove-shaped or slot-shaped receptacle into which a projection or pin of the movable part engages over this angular range. If the movable part is guided linearly, the relationship between the rotary movement of the lever and the linear movement of the movable part changes, so that when the movable part is released, the forces occur less abruptly than if a driver preloaded by a force accumulator linearly along a guide track with a angled end section is guided.
  • the retraction device according to the invention is preferably used in pull-out runners such as those used for furniture or household appliances.
  • the retraction device can also be used for sliding doors or other movable components.
  • a retraction device 1 comprises a housing 2 on which a lever 3 is rotatably mounted about an axis 4.
  • the lever 3 comprises a receptacle 31 into which a movable part 5 can be inserted, which is designed as a pin or projection which engages in the receptacle on the rotatable lever 3 and can be moved together with it.
  • the movable part 5 is displaceably arranged on the receptacle of the rotatably mounted lever 3.
  • the retraction device 1 is shown in detail in the exploded view Figure 2 shown.
  • the housing 2 includes a housing part 21 and a housing cover 20, which form a cavity in the assembled position.
  • An energy storage device 7 in the form of a spring, in particular a helical spring, is arranged in the housing 2 and is fixed with a first end 70 to a wall in the housing 2 at a receptacle 22.
  • the energy accumulator 7 is connected at the opposite end 71 to a connecting element 6, which is designed as a rod and has a holder 61 at one end in which the end 71 of the energy accumulator 7 can be fixed.
  • the connecting element 6 is articulated at the opposite end to the rotatably mounted lever 3, for which purpose a pin 60 on the connecting element 6 engages in an opening 32 on the lever 3, which is arranged at a distance from the axis 4 of the lever 3.
  • the axis 4 of the lever 3 corresponds to its axis of rotation, which results from an opening 30 on the lever 3 and a pin 25 on the housing part 21, one end of the lever 3 protruding laterally from the housing 2 in the area of a recess 23 in the housing 2 , around to accommodate the movable part 5 over a predetermined angular range, according to the invention between 60° and 120°.
  • the retraction device 1 further comprises a damper 8, which is designed as a linear pressure damper, for example as a fluid damper, which comprises a cylindrical housing 80 on which a piston rod 81 connected to a piston is slidably mounted.
  • the damper 8 can be fixed to a receptacle 24 of the housing 2, the piston rod 81 being connected to a slide 9 via a connecting element 82.
  • the carriage 9 has a receptacle 91 into which an end section of the connecting element 82 is inserted.
  • the carriage 9 further comprises an opening 90 into which a bolt 62 of the connecting element 6 is inserted, so that the connecting element 6 is mounted in an articulated manner on the carriage 9.
  • the carriage 9 is guided in a linear guide track 26 on the lower housing part 21.
  • FIG 3A the retraction device 1 is shown with a tensioned energy storage device 7, which is arranged essentially parallel and adjacent to the connecting element 6.
  • the movable part 5 was moved linearly, essentially parallel to a longitudinal direction of the housing 2, and independently of the lever 3 towards the retraction device and is located on the rotatably mounted lever 3 before being picked up, while the lever 3 is held in an end position. If the movable part 5, which is coupled, for example, to a movable furniture part, such as a drawer or a sliding door, is now to be moved further into an end position, for example the maximum opening position or the closed position, a relative movement takes place between the movable part 5 and the Housing 2 instead, like this comparison Figures 3B and 3C shows.
  • the movable part 5 can initiate extension from the retraction device 1 in the event of an externally applied opposing force movement, for example a closing movement of a push element, such as a drawer, exerted by the user.
  • the energy accumulator 7 is tensioned by a corresponding counterclockwise movement of the lever 3 until the lever 3 exceeds the dead center and then in the opposite first end position Figure 3B is fixed.
  • a decoupling then takes place between the movable part 5 and the receptacle 31 on the lever 3 according to Figure 3B and the movable part 5 can again be independent of the lever 3, as in Figure 3A shown, moved.
  • the movement of the rotatable lever 3 can be braked by the damper 8, which can be designed as a compression and/or tension damper depending on the damping direction.
  • the damper 8 can also be omitted.
  • the pull-in device 1 is shown together with a pull-out guide 10, which has a stationary rail 11, which can be fixed, for example, to a furniture body or a household appliance.
  • a middle rail 12 is movably mounted, on which a further movable rail 13 is arranged, on which a push element, such as a drawer, or another component can be fixed.
  • the pull-out guide 10 can only include two rails or more than three rails instead of three rails.
  • the retraction device 1 is arranged on the movable rail 13 and the part 5, which is movable relative to the retraction device 1, is connected to the stationary rail 11 via a schematically shown connecting means 14.
  • the pull-out guide 10 is located in the in Figure 4A Position shown shortly before reaching its end position, the energy accumulator 7 being tensioned, and the lever 3 being in the in Figure 3A shown first end position. If the rail 13 moves further into its end position, further away from the stationary rail 11, the movable part 5 couples to the lever 3 and moves thus the rotatably mounted lever 3 out of its end position, which leads to the connecting element 6 being moved with the lever 3 beyond the dead center, so that the energy storage device 7 then drives the connecting element 6 and the lever 3.
  • Figure 4C a middle position is shown in which the retraction device has been unlocked and the energy storage drives the connecting element 6, whereby the lever 3 is supported on the movable part 5 and thereby moves the rail 13 towards the end position.
  • the movement sequence is reversed, that is, the pull-in device 1 is moved with the rail 13 in the direction of the stationary rail 11, and by coupling the movable part 5 with the receptacle of the rotatably mounted lever 3 , the energy accumulator 7 is then tensioned via the rotatable mounted lever 3 and the connecting element 6 until the dead center is exceeded and the in the Figures 4B and 3B position shown is reached. Then the movable part 5 can be removed from the receptacle of the lever 3, so that the retraction device 1 with the rail 13 can be moved independently of the movable part 5.
  • a modified embodiment of a retraction device is shown, with the same components being designated by the same reference numbers.
  • a lever 3 rotatably mounted on a housing 2 includes a receptacle 31 for a movable part 5.
  • the movable part 5 is designed as a cylindrical bolt and includes a flat 50, which facilitates the engagement of the movable part 5 on the lever 3.
  • the feed device 1 of the Figure 5 is in detail in the exploded view Figure 6 shown.
  • the housing 2 comprises a shell-shaped housing part 21 and a housing cover 20, which surround a cavity in which an energy accumulator 7 is arranged in the form of a spring.
  • a first end 70 of the energy accumulator 7 is fixed to a receptacle 22 and an opposite end 71 is connected to a holder 43 on a connecting part 40.
  • the connecting part 40 is guided essentially linearly in a channel-shaped receptacle on the housing 2.
  • the connecting part 40 has a pin 41 which engages in an opening 42 on the connecting element 6 designed as a rod and connects the two in an articulated manner.
  • the connecting element 6 has a further opening 44, which is articulated to a pin 32 'on the lever 3.
  • the lever 3 is rotatably mounted around the pin 25.
  • a damper 8 with a housing 80 and a piston rod 81 movable relative to the housing is present.
  • the damper 8 is fixed in a receptacle 24 of the housing 2 and the piston rod 81 is coupled to the connecting part 40.
  • FIG 8 a diagram of a retraction device is shown with a linearly movable driver, which is movable along a guide track with an angled end section and is biased by an energy storage device.
  • the force of the energy accumulator on the driver and the path when unlocking the retraction device are shown, whereby the diagram must be read from right to left.
  • the movable part for example the drawer, is in its open end position.
  • the force from the energy accumulator on the linearly guided driver initially increases when closing and then drops comparatively abruptly, for example over a distance of 9 mm. In this area, the driver or the tilting segment tilts and releases the movable part. This occurs comparatively abruptly over a short distance.
  • FIG 9 a force-displacement diagram of a retraction device 1 according to the invention is shown.
  • a drawer is initially assumed to be in the open end position, starting from the right side.
  • the partially relaxed energy storage is tensioned again, with the force via the connecting element 6 and the lever 3 on the movable part 5 increasing and reaching a maximum.
  • the distance between the maximum force of the energy accumulator on the movable part 5 up to the decoupling of the movable part 5 from the lever 3 takes place over a significantly longer distance, for example in a range between 15 mm to 40 mm, preferably 17 mm to 25 mm , so that the power transfer is less abrupt for the user, which is more comfortable to use.
  • the maximum force set by the energy storage device was chosen to be approximately the same at 20 N.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drawers Of Furniture (AREA)

Claims (10)

  1. Dispositif de rétraction (1) d'une partie mobile (5) notamment d'une partie de meuble comprenant un levier (3) monté pivotant sur un boîtier (2), et susceptible d'être couplé à la partie mobile (5) dans une plage angulaire comprise entre deux positions de fin de course, pour freiner la partie mobile (5) ou l'accélérer,
    - le levier (3) étant prépositionné dans une position de fin de course par un accumulateur de force (7),
    - le levier (3) étant relié de manière articulée à un élément de liaison (6) guidé le long d'un chemin de guidage (26) sur le boîtier (2),
    - le chemin de guidage (26) étant linéaire et l'accumulateur de force (7) étant relié à l'élément de liaison (6) sur le côté opposé à celui du levier (3), dispositif caractérisé en ce que la plage angulaire entre les deux positions de fin de course du levier (3) est comprise entre 60° et 120°.
  2. Dispositif de rétraction selon la revendication 1, caractérisé en ce que pendant le mouvement du levier (3) d'une première position de fin de course vers la seconde position de fin de course, l'accumulateur de force (7) passe par un maximum de la force de ressort.
  3. Dispositif de rétraction selon la revendication 1 ou 2, caractérisé en ce que le levier (3) monté pivotant est maintenu dans une position de fin de course par l'accumulateur de force (7) tendu, par le dépassement d'un point mort.
  4. Dispositif de rétraction selon l'une des revendications précédentes, caractérisé en ce que l'élément de liaison (6) est relié de manière articulée à un chariot (9) guidé sur le chemin de guidage (26).
  5. Dispositif de rétraction selon l'une des revendications précédentes, caractérisé en ce que l'élément de liaison (6) est en forme de tige.
  6. Dispositif de rétraction selon l'une des revendications précédentes, caractérisé par un amortisseur (8) qui freine le mouvement du levier (3) vers une position de fin de course.
  7. Dispositif de rétraction selon la revendication 6, caractérisé en ce que l'amortisseur (8) est relié à l'extrémité de l'élément de liaison (6) à l'opposé du levier (3).
  8. Dispositif de rétraction selon l'une des revendications précédentes, caractérisé en ce que le levier (3) est découplé de la partie mobile (5) dans les deux positions de fin de course.
  9. Guide d'extraction (10) comprenant un rail fixe (11) et au moins un rail mobile (12, 13) caractérisé en ce que un rail mobile (12, 13) se fixe dans une position de fin de course par un dispositif de rétraction (1) selon l'une des revendications précédentes.
  10. Guide d'extraction (10) comprenant un rail fixe (11) et au moins un rail mobile (12, 13), caractérisé en ce que un rail mobile (12, 13) se déplace en direction d'une position de fin de course par un dispositif de rétraction (1) selon l'une des revendications précédentes et il est de nouveau libéré avant d'atteindre la position de fin de course.
EP20712527.9A 2019-04-16 2020-03-17 Dispositif rétractable pour une partie mobile Active EP3955773B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019110035.6A DE102019110035A1 (de) 2019-04-16 2019-04-16 Einzugsvorrichtung für ein bewegbares Teil
PCT/EP2020/057275 WO2020212052A1 (fr) 2019-04-16 2020-03-17 Dispositif rétractable pour une partie mobile

Publications (2)

Publication Number Publication Date
EP3955773A1 EP3955773A1 (fr) 2022-02-23
EP3955773B1 true EP3955773B1 (fr) 2023-09-27

Family

ID=69846463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20712527.9A Active EP3955773B1 (fr) 2019-04-16 2020-03-17 Dispositif rétractable pour une partie mobile

Country Status (5)

Country Link
EP (1) EP3955773B1 (fr)
CN (1) CN113660886B (fr)
DE (1) DE102019110035A1 (fr)
ES (1) ES2967732T3 (fr)
WO (1) WO2020212052A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013103989A1 (de) * 2013-04-19 2014-11-06 Hettich-Heinze Gmbh & Co. Kg Führungsvorrichtung

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
GB1117071A (en) * 1966-02-21 1968-06-12 G K N Sankey Proprietary Ltd Improvements in or relating to drawers and cabinet assemblies
GB2297578A (en) * 1995-02-02 1996-08-07 Ind Ragi D A Drawer closure safety device
AT503066B1 (de) * 2004-12-03 2008-01-15 Blum Gmbh Julius Antriebsvorrichtung für ein bewegbar gelagertes möbelteil
DE202008008538U1 (de) * 2008-06-30 2009-11-19 Paul Hettich Gmbh & Co. Kg Möbelauszugsführung
US20100066225A1 (en) * 2008-09-15 2010-03-18 Chirh-Siang Chang Heavy-Duty Automatic Return Buffering Slide
DE202009006855U1 (de) * 2009-05-12 2010-09-30 Karl Simon Gmbh & Co. Kg Einzugvorrichtung
DE102010036741B4 (de) * 2009-08-07 2020-10-08 Paul Hettich Gmbh & Co. Kg Auszugssystem
DE202009005119U1 (de) * 2009-08-07 2010-12-30 Paul Hettich Gmbh & Co. Kg Auszugsführung
DE102012111551B4 (de) * 2011-11-28 2023-08-31 Paul Hettich Gmbh & Co. Kg Auszugsführung
AT512415B1 (de) * 2012-03-20 2013-08-15 Fulterer Gmbh Zuziehvorrichtung für ein beweglich gelagertes Möbelteil
AT514064B1 (de) * 2013-04-12 2014-10-15 Blum Gmbh Julius Antriebsvorrichtung für ein bewegbares Möbelteil
AT15245U1 (de) * 2015-07-07 2017-04-15 Blum Gmbh Julius Antriebsvorrichtung für ein bewegbares Möbelteil
DE202015104431U1 (de) * 2015-08-21 2016-11-22 Grass Gmbh Vorrichtung für die Bewegung eines Möbelteils und Möbel
DE202015104435U1 (de) * 2015-08-21 2016-11-22 Grass Gmbh Vorrichtung zum Bewegen eines bewegbaren Möbelteils in eine Öffnungsrichtung in Bezug zu einem Möbelkorpus eines Möbels
CN105640089B (zh) * 2016-03-03 2018-02-23 李浩典 伸缩滑轨的缓冲自关器
AT518398B1 (de) * 2016-04-05 2017-10-15 Blum Gmbh Julius Möbelantrieb
CN109276058B (zh) * 2018-11-29 2021-04-20 王倩妮 可伸缩的家具门把手

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013103989A1 (de) * 2013-04-19 2014-11-06 Hettich-Heinze Gmbh & Co. Kg Führungsvorrichtung

Also Published As

Publication number Publication date
CN113660886B (zh) 2023-08-18
WO2020212052A1 (fr) 2020-10-22
EP3955773A1 (fr) 2022-02-23
DE102019110035A1 (de) 2020-10-22
CN113660886A (zh) 2021-11-16
ES2967732T3 (es) 2024-05-03

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