EP4164450A1 - Dispositif auto-rétractable - Google Patents

Dispositif auto-rétractable

Info

Publication number
EP4164450A1
EP4164450A1 EP21725444.0A EP21725444A EP4164450A1 EP 4164450 A1 EP4164450 A1 EP 4164450A1 EP 21725444 A EP21725444 A EP 21725444A EP 4164450 A1 EP4164450 A1 EP 4164450A1
Authority
EP
European Patent Office
Prior art keywords
carriage
pull
arm
slide
self
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.)
Granted
Application number
EP21725444.0A
Other languages
German (de)
English (en)
Other versions
EP4164450B1 (fr
Inventor
Matthias BECHTER
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.)
Fulterer AG and Co KG
Original Assignee
Fulterer AG 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 Fulterer AG and Co KG filed Critical Fulterer AG and Co KG
Publication of EP4164450A1 publication Critical patent/EP4164450A1/fr
Application granted granted Critical
Publication of EP4164450B1 publication Critical patent/EP4164450B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/473—Braking devices, e.g. linear or rotational dampers or friction brakes; Buffers; End stops
    • 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
    • A47B88/49—Sliding drawers; Slides or guides therefor with double extensible guides or parts
    • A47B88/493—Sliding drawers; Slides or guides therefor with double extensible guides or parts with rollers, ball bearings, wheels, or the like

Definitions

  • the invention relates to a self-retracting device for a furniture part that can be pulled out of a furniture body by means of a pull-out guide in a pull-out direction and pushed against the pull-out direction into the furniture body, comprising a slide mounted on a base body so that it can be displaced from a basic position to a waiting position, one the slide into the basic position acting pull-in spring, the carriage being coupled to a driver that can be moved in the pull-out direction against the force exerted by the pull-in spring
  • WO 2008/119091 A1 discloses a self-retracting device of this type.
  • the damper unit used to dampen the pull-in movement is formed by a pneumatic piston-cylinder unit.
  • Damper units designed in a different way have also already been used in self-retracting devices, for example rotary dampers. So that the pull-out furniture part can be pulled out starting from the fully inserted state of the pull-out furniture part is not hindered by the damper unit, the damper unit preferably only acts in the direction of insertion.
  • the pull-in spring engages a lever according to the teaching of AT 521511 B1, which is pivotably mounted in relation to the carriage and in relation to the base body of the self-pulling device.
  • the axis of rotation formed with respect to the base body is displaceable with respect to the lever or with respect to the base body, in particular by means of a link arranged in the lever or in the base body, in which a guide pin forming the pivot axis engages.
  • the object of the invention is to provide an advantageous self-retracting device of the type mentioned at the beginning, which has a relatively short overall length with a relatively long retraction path. According to the invention, this is achieved by a self-retracting device with the features of claim 1.
  • the slide is coupled to the movable part of the damper unit via an arm.
  • This arm can be pivoted about a first pivot axis with respect to the slide and about a second pivot axis with respect to the damper unit.
  • the first pivot axis is displaceable relative to the arm or the slide and / or the second pivot axis is displaceable relative to the arm or the movable part of the damper unit.
  • the arm is guided by the base body between a rear end position which the arm assumes in the basic position of the carriage and a front end position which the arm assumes in the waiting position of the carriage.
  • the arm rotates about an axis perpendicular to the pull-out direction.
  • the distance by which the carriage moves is greater than the distance by which the movable part of the damper unit is moved, preferably by more than twice. It is thus over the end portion of the retraction path that of the damper unit the damping force exerted on the slide is reduced, preferably to less than half.
  • Freewheeling of the damper in the end section of the movement of the slide from the waiting position into the basic position can thereby be reduced or, preferably, be eliminated entirely.
  • the required overall length of the damper can be shortened as a result.
  • the damper is preferably designed in the form of a piston-cylinder unit, in particular a pneumatically operated unit.
  • the base body advantageously has a link in which at least one guide pin of the arm engages.
  • Two guide pins of the arm preferably engage in this link in order to guide the combined displacement and rotation of the arm.
  • an elongated guide pin of the arm could also be provided, which engages in the link of the base body, or two links of the base body could be provided, in which a respective guide pin of the arm engages.
  • an advantageous embodiment of the invention provides that the draw-in spring engages a spring lever which is pivotable relative to the base body about a first axis of rotation and relative to the carriage about a second axis of rotation, the first axis of rotation being displaceable relative to the base body or relative to the spring lever.
  • the translation of the spring force on the slide can thereby be modified via the retraction path of the slide.
  • the slide has a tilting part which is mounted so as to be pivotable about a tilting axis between an engagement position and a release position.
  • the tilting part assumes the engagement position and the driver is coupled to the tilting part.
  • the driver can engage in a recess of the tilting part which is in the engaged position.
  • the driver could also have a recess into which a projection of the tilting part engages.
  • the tilting part is tilted into the release position.
  • the tilting part thus also forms a holding device for holding the slide in the waiting position when the slide is uncoupled from the driver.
  • Other designs of such a holding device are possible and known.
  • the carriage itself could be tilted around an axis at right angles to the pull-out direction in the end section of the displacement before reaching the waiting position (by means of a correspondingly curved guide of the base body), whereby the driver can also move out of a recess in the carriage, and the carriage directly by contact be held on a retaining surface of the base body against displacement against the pull-out direction.
  • FIG. 1 shows a pull-out guide with an integrated self-pulling device according to a
  • Embodiment of the invention in the inserted state of the pull-out guide
  • FIG. 2 shows an oblique view corresponding to FIG. 1 in the extended state of the pull-out guide
  • FIG. 5 shows an oblique view of the pull-out rail and the self-retracting device on an opposite side, the middle rail and body rail omitted;
  • FIG. 8 shows an oblique view corresponding to FIG. 7, in the waiting position of the carriage
  • Fig. 9 and 10 oblique views of the self-retracting device in the basic position and waiting position of the carriage from a different viewing direction;
  • FIG. 15 shows a side view in a second intermediate position of the slide, which is shifted further in the pull-out direction compared to FIG. 14;
  • 16 is a side view in the waiting position of the carriage
  • FIGS. 13 to 16 are side views corresponding to FIGS. 13 to 16 without the main body of the pull-in device;
  • the self-retracting device is integrated in a pull-out guide which, in the exemplary embodiment shown, comprises a body rail 1, a central rail 2 and a pull-out rail 3.
  • the pull-out guide is designed here in the manner of a differential pull-out guide, in which the center rail 2 covers half the distance of the pull-out rail 3 when it is pulled out and pushed in.
  • all rollers can be arranged on the center rail 2.
  • the pull-out guide can be designed in a conventional manner and the arrangement of the rollers and their mode of operation need not be explained in more detail here.
  • a self-retracting device can also be integrated in other types of pull-out guides, for example also in a pull-out guide which has only one body rail and one pull-out rail.
  • the pull-out rail 3 is pulled out from the completely pushed-in state in a pull-out direction 4, while the pull-out rail 3 is pushed in counter to the pull-out direction 4.
  • FIG. 2 Only in FIG. 2 are parts of a furniture carcass 50, on which the carcass rail 1 is to be mounted, and of a pull-out furniture part 51, on which the pull-out rail 3 is to be mounted, indicated by dashed lines.
  • the self-retracting device has a base body 5, of which a slide 6 is parallel to the pull-out direction 4 between a basic position (FIGS. 7, 9, 13, 17, 21 and 25) and a waiting position (FIGS. 8, 10, 16, 20, 24 and 28) is slidably mounted.
  • the slide 6 For the displaceable guidance of the slide 6, it has grooves 7 on both sides, in which mutually directed webs 8 of the base body 5 that run parallel to the pull-out direction 4 engage.
  • the slide 6 could also have protruding guide pins which engage in links in the base body, for example in the form of elongated holes.
  • a tilting axis 10 which could also be referred to as a pivoting or rotating axis.
  • the tilting axis 10 can, for example, by means of axle journals 11 of the Tilting part 9 are formed, which engage in axial recesses 12 of the carriage 6.
  • the tilt axis 10 is at right angles to the pull-out direction 4 and is preferably horizontal.
  • a draw-in spring 13 engages a spring lever 14.
  • the spring lever 14 can be pivoted about a first axis of rotation 15 with respect to the base body 5 and about a second axis of rotation 16 with respect to the slide 6.
  • the first axis of rotation 15 is displaceable relative to the base body 5 and immovable relative to the spring lever.
  • the second axis of rotation 16 is immovable with respect to the slide 6 and with respect to the spring lever.
  • the draw-in spring 13 engages a fastening pin 19 of the spring lever 14, which lies between the first and second axes of rotation 15, 16.
  • the second axis of rotation 16 is formed, for example, by axle journals 20 of the spring lever 14, which engage in axle recesses 21 of the tilting part 9.
  • the first and second axes of rotation 15, 16 lying parallel to one another are at right angles to the pull-out direction 4 and are preferably horizontal.
  • a damper unit 22 serves to dampen the displacement of the slide 6 from the waiting position into the basic position.
  • the cylinder is immovably connected to the base body 5.
  • the piston rod is connected to a movable part 22b of the damper unit, which is guided displaceably from the base body 5 parallel to the pull-out direction 4. Only the movement of the movable part 22b opposite to the pull-out direction is damped by the piston-cylinder unit 22a, while the movement of the movable part 22b in the opposite direction is undamped.
  • dampers which have a freewheel in one direction of movement, in particular act pneumatically, are known.
  • a kinematically reversed arrangement of the piston-cylinder unit is also conceivable and possible, that is to say that the piston rod is immovable with respect to the base body 5 and the cylinder is displaceable and is immovably connected to a movable part of the damper unit.
  • the movable part 22b of the damper unit 22 is coupled to the slide 6 via an arm 23.
  • the second pivot axis 5 can, for example, as shown, be formed by a journal 26 of the movable part 22b of the damper unit 22, which engages in an axis recess 27 of the arm 23.
  • the first pivot axis 24 can, for example, as shown, be formed by a journal 28 of the carriage 6 which engages in an elongated hole 29 of the arm 23.
  • the first pivot axis 24 is displaceable with respect to the arm 23 and immovable with respect to the slide 6, while the second pivot axis 25 is immovable with respect to the arm 23 and with respect to the movable part 22b of the damper unit 22.
  • the first and second pivot axes 24, 25 lying parallel to one another are at right angles to the pull-out direction 4 and are preferably horizontal.
  • the arm 23 is movably supported by the base body 5 between a rear end position and a front end position.
  • the arm 23 assumes the rear end position in the basic position of the carriage 6.
  • the arm 23 assumes the front end position in the waiting position of the carriage 6.
  • the arm 23 In the front end position, the arm 23 is displaced in the pull-out direction with respect to the rear end position and is pivoted about an axis which is at right angles to the pull-out direction 4 and is horizontal in the exemplary embodiment.
  • This axis around which the arm 23 is pivoted in the front end position with respect to the rear end position is formed by the second pivot axis 25 in the exemplary embodiment.
  • the base body 5 has a link 30 into which first and second guide pins 31, 32 of the arm 23 engage.
  • the link 30 In a rear end section of the link 30, the link 30 has downward and upward bulges in which the guide pins 31, 32 are in the rear end position of the arm 23.
  • the link 30 also has bulges downward and upward in a front end section, in which the guide pins 31, 32 lie in the front end position of the arm 23.
  • the driver 33 which interacts with the slide 6 via the tilting part 9, is formed in the exemplary embodiment by a section of the pull-out rail 3, see Area of a rear end a projection 33 forming the driver.
  • the driver 33 engages in a recess 9a of the tilting part.
  • the pull-out rail 3 is in its fully inserted position.
  • the driver 33 pulls the slide 6 via the tilting part 9 starting from its basic position in the pull-out direction 4 against the force of the draw-in spring 13, which is transmitted to the slide 6 via the spring lever 14, in the direction of its waiting position.
  • the tilting part 9 pivots about the tilting axis 10 from its engagement position into the release position. In the release position, the driver 33 can move out of the recess 9a of the tilting part 9.
  • the tilting part When the slide is moved from the basic position towards the waiting position, the tilting part is initially blocked by the base body against tilting about the tilting axis 10, in particular by a displaceable guide of the tilting part parallel to the pull-out direction 4 from the base body.
  • grooves 9d on both sides of the tilting part 9 engage in the webs 8 of the base body. In the last section of the displacement of the slide 6, before it reaches the waiting position, the grooves 9d extend out of the front ends of the webs 8, so that the tilting part 9 can be pivoted from the engagement position into the release position.
  • the arm 23 is initially rotated about an axis at right angles to the extraction direction, in the exemplary embodiment about the second pivot axis 25 6 can be achieved on the movable part 22b of the damper unit 22.
  • the distance of the displacement of the slide 6 opposite to the pull-out direction 4 is thus greater than the distance of the displacement of the movable part 22b of the damper unit. The onset of the damping effect of the damper unit 22 is therefore less abrupt.
  • This rotation of the arm 23 in the initial section of the retraction path could also be omitted.
  • the bulges of the backdrop in its front end section could be omitted.
  • the rotation of the arm 23 about the axis at right angles to the pull-out direction 4 (which in the exemplary embodiment is formed by the second pivot axis 25) is brought about by the force applied to the arm 23 in the area of its first pivot axis 24 from the retraction spring 13 via the spring lever 14 and the carriage 6 is exercised.
  • the movable part 22b of the damper unit is guided by engagement of the axle journal 26 and a further guide pin 34 of the movable part 22b in the link 30 of the base body 5.
  • Other types of displaceable guidance can be provided, for example via a separate link in the base body or via a bar on one of the two parts that engages in a groove on the other of the two parts.
  • 29 to 31 show variant embodiments of the coupling of the slide 6 to the damper unit 22 via the arm 23 in a highly schematic manner.
  • FIGS. 29 to 31 The movable and pivotable mounting of the arm on the base body is not shown in FIGS. 29 to 31. This can be carried out analogously as described above.
  • the first pivot axis 24 is displaceable with respect to the slide 6 (and immovable with respect to the arm 23), while the second pivot axis 25 is immovable with respect to the movable part 22b of the damper unit 22 and the arm 23.
  • the slide has, for example, an elongated hole 35 into which an axle journal of the arm 23 engages.
  • the first pivot axis 24 is immovable with respect to the slide 6 and with respect to the arm 23, while the second pivot axis 25 is shiftable with respect to the arm 23 and is immovable with respect to the movable part 22b.
  • the second pivot axis 25 has, for example, an elongated hole 36 into which an axle journal of the movable part 22b of the damper unit 22 engages.
  • the first pivot axis 24 is immovable with respect to the arm 23 and with respect to the slide 6, while the second pivot axis 25 is shiftable with respect to the movable part 22b of the damper unit 22 and immovable with respect to the arm 23.
  • the damper unit 22 has, for example, an elongated hole 37 into which an axle bolt of the arm 23 engages.
  • the arm 23 is again rotated about the second pivot axis 25, while in the embodiment variants according to FIGS. 30 and 31 the arm 23 is rotated about the first pivot axis 24.
  • the spring lever 14 has, for example, a spring lever link 38 into which an axle journal of the base body 5 engages.
  • both the first pivot axis 24 and the second pivot axis 25 could be displaceable with respect to one of the two parts which are connected to one another via the respective pivot axis 24, 25.
  • the pivoting of the arm 23 during its rotation would then take place about an imaginary axis defined by the guidance of the arm 23 on the base body 5, perpendicular to the pull-out direction 4, which would again preferably be horizontal.
  • the slide could also be shifted between the home position and the waiting position along a curved path respectively.
  • An overall tilting of the slide could take place here, so that a separate tilting part could be omitted.

Landscapes

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

Abstract

L'invention concerne un dispositif auto-rétractable pour une pièce de meuble (51) qui peut être extraite d'un corps de meuble (50) dans une direction d'extraction (4) au moyen d'une glissière de tiroir télescopique, ledit dispositif auto-rétractable comprenant : un chariot (6) supporté de manière coulissante par un corps de base (5) ; un ressort de rétraction (13) qui charge le chariot (6) dans une position de base, le chariot (6) pouvant coulisser, en étant couplé à un élément d'entraînement (33), de la position de base à une position d'attente dans laquelle l'élément d'entraînement (33) peut être désaccouplé du chariot (6) et dans laquelle le chariot (6) est retenu contre la force du ressort de rétraction (13) ; et une unité d'amortissement (22) destinée à amortir le mouvement de glissement du chariot (6) de la position d'attente à la position de base. Le chariot (6) est couplée à une partie mobile (22b) de l'unité d'amortissement (22) au moyen d'un bras (23) qui peut pivoter par rapport au chariot (6) autour d'un premier axe de pivotement (24) et par rapport à l'unité d'amortissement (22) autour d'un deuxième axe de pivotement (25), l'un des axes de pivotement (24, 25) pouvant coulisser, et qui est guidé par le corps de base (5) entre une position d'extrémité arrière et une position d'extrémité avant. Selon l'invention, lorsque le chariot (6) est déplacé de manière coulissante par le ressort de rétraction (13) sur un trajet de rétraction, au moins dans une portion d'extrémité du trajet de rétraction, le bras (23) est entraîné en rotation autour d'un axe qui s'étend perpendiculairement à la direction d'extraction (4).
EP21725444.0A 2020-06-10 2021-05-05 Dispositif auto-rétractable Active EP4164450B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA128/2020A AT523429B1 (de) 2020-06-10 2020-06-10 Selbsteinziehvorrichtung
PCT/EP2021/061824 WO2021249699A1 (fr) 2020-06-10 2021-05-05 Dispositif auto-rétractable

Publications (2)

Publication Number Publication Date
EP4164450A1 true EP4164450A1 (fr) 2023-04-19
EP4164450B1 EP4164450B1 (fr) 2024-03-13

Family

ID=75914500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21725444.0A Active EP4164450B1 (fr) 2020-06-10 2021-05-05 Dispositif auto-rétractable

Country Status (6)

Country Link
US (1) US20230210260A1 (fr)
EP (1) EP4164450B1 (fr)
CN (1) CN115697138A (fr)
AT (1) AT523429B1 (fr)
PL (1) PL4164450T3 (fr)
WO (1) WO2021249699A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20308218U1 (de) * 2003-05-22 2004-09-23 Paul Hettich Gmbh & Co. Schließ- und Dämpfungsvorrichtung für bewegbare Möbelteile
JP4782795B2 (ja) * 2004-11-05 2011-09-28 アキュライド インターナショナル，インコーポレイテッド 制動メカニズム及びこれを組み込むスライド
DE202007019190U1 (de) * 2007-02-20 2011-02-10 Karl Simon Gmbh & Co. Kg Einzugvorrichtung für Schiebelemente
AT505053B1 (de) * 2007-04-02 2009-02-15 Fulterer Gmbh Rollen-differentialausziehführung
WO2010143352A1 (fr) * 2009-06-12 2010-12-16 高千穂交易株式会社 Dispositif rentrant pour tiroir et dispositif de correction d'erreur
DE102010000341A1 (de) * 2010-02-08 2011-08-11 Karl Simon GmbH & Co. KG, 78733 Einzugvorrichtung für Möbel
KR101742643B1 (ko) * 2015-05-19 2017-06-07 (주)세고스 슬라이드 장치
DE102016116449A1 (de) * 2016-09-02 2018-03-08 Paul Hettich Gmbh & Co. Kg Selbsteinzugs- und Dämpfungsvorrichtung für ein Schubelement und Möbel oder Haushaltsgerät mit mindestens einem Schubelement
AT521511B1 (de) * 2018-12-21 2020-02-15 Fulterer Ag & Co Kg Selbsteinziehvorrichtung
US11864651B2 (en) * 2019-06-05 2024-01-09 Knape & Vogt Manufacturing Company Closing device for drawers

Also Published As

Publication number Publication date
CN115697138A (zh) 2023-02-03
PL4164450T3 (pl) 2024-06-24
WO2021249699A1 (fr) 2021-12-16
EP4164450B1 (fr) 2024-03-13
AT523429B1 (de) 2021-08-15
US20230210260A1 (en) 2023-07-06
AT523429A4 (de) 2021-08-15

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