EP2359716A1 - Vorrichtung zum Öffnen einer Schublade eines Möbelstücks oder Ähnlichem - Google Patents

Vorrichtung zum Öffnen einer Schublade eines Möbelstücks oder Ähnlichem Download PDF

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Publication number
EP2359716A1
EP2359716A1 EP11154463A EP11154463A EP2359716A1 EP 2359716 A1 EP2359716 A1 EP 2359716A1 EP 11154463 A EP11154463 A EP 11154463A EP 11154463 A EP11154463 A EP 11154463A EP 2359716 A1 EP2359716 A1 EP 2359716A1
Authority
EP
European Patent Office
Prior art keywords
pusher
drawer
assist device
pivotally mounted
rods
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.)
Withdrawn
Application number
EP11154463A
Other languages
English (en)
French (fr)
Inventor
Hassan Belhanda
Alexandre Naoun
Pierre Talou
Jean-Noël Lefebvre
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.)
Erce Plasturgie
Original Assignee
Erce Plasturgie
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 Erce Plasturgie filed Critical Erce Plasturgie
Publication of EP2359716A1 publication Critical patent/EP2359716A1/de
Withdrawn legal-status Critical Current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
    • A47B88/463—Actuated drawers operated by mechanically-stored energy, e.g. by springs self-opening
    • 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

Definitions

  • the present invention relates to an assistance device for opening a drawer of a piece of furniture or the like.
  • the document FR 2 181 287 discloses an assistance device for opening a drawer of a cabinet.
  • the assistance device described in this document comprises a support mounted on the furniture frame, a pusher for cooperating with the drawer, a first and a second connecting bar connected to one another in a cross manner by a hinge, the first connecting bar comprising a first end mounted articulated on the support and a second end slidably mounted on the pusher, and the second connecting bar comprising a first end mounted articulated on a guide member slidably mounted on the support and a second end articulated rise on the pusher.
  • the assistance device further comprises driving means arranged to slidably drive the guide member between a closed position in which the first ends of the connecting bars are spaced apart from each other and the pusher is close to the support, and an open position in which the first ends of the connecting bars are brought closer to each other and the pusher is removed from the support.
  • Such a support device has a complex structure and does not allow the transmission to the drawer of a pushing force high enough to allow easy movement of the drawer when it is relatively heavy.
  • the present invention aims to remedy these disadvantages.
  • the technical problem underlying the invention therefore consists in providing a support device which is simple in structure, economical and reliable, which has a small footprint, and which allows the transmission to the drawer of a high thrust force.
  • connecting means are shaped deformable parallelogram ensures the transmission of a pushing force high enough to allow easy movement of the drawer regardless of the weight of the latter.
  • this form of connecting means provides a simple structure of assistance and economic, and small footprint.
  • this form of the connecting means makes it possible to push the drawer at any point of its width with the same degree of efficiency. It is thus possible to adapt the pusher so that it cooperates with the rear face of the drawer on a portion from the center to the ends of the rear face.
  • This configuration of the connecting means also ensures a push on the slide along an axis parallel to the opening direction of the latter without exerting friction on the drawer.
  • the connecting means and the actuating means are designed so that the velocity curve of the pusher during its movements from its open position to its closed position has an arcuate shape.
  • the second ends of the connecting rods of one of the first and second pairs are pivotally mounted respectively on the corresponding connecting rods of the other pair.
  • the second ends of the first and third connecting rods are pivotally mounted on one of the first and second connecting members, and the second ends of the second and fourth connecting rods are pivotally mounted on the other first and second connecting members.
  • the second ends of the connecting rods of one of the first and second pairs are pivotally mounted respectively on the first and second connecting members, and the second ends of the connecting rods of the other of the first and second pairs are pivotally mounted respectively on the corresponding connecting rods of the other pair.
  • the second ends of the first and second connecting rods are for example pivotally mounted respectively on the first and second connecting members while the second ends of the third and fourth connecting rods are pivotally mounted respectively on the first and second and second connecting rods.
  • the second ends of the first and second connecting rods are pivotally mounted respectively on the first and second connecting members around a first and a second axis of rotation
  • the second ends of the third and fourth connecting rods are respectively pivotally mounted. on the first and second links about a third and a fourth axis of rotation, the first and third axes of rotation being offset relative to one another, and the second and fourth axes of rotation being offset one with respect to the other.
  • the actuating means comprise an actuating rod arranged to cooperate with the first and second connecting members so as to relatively move the latter between a first position in which they are close to one another and the means link are in their open position, and a second position in which they are distant from each other and the connecting means are in their closed position.
  • the first connecting member comprises a bore
  • the second connecting member comprises an internally threaded bore
  • the operating rod has a first non-threaded portion rotatably mounted in the bore of the first connecting member, and a second threaded portion externally arranged to cooperate with the threaded bore of the second connecting member.
  • the actuating means comprise drive means arranged to drive the operating rod in rotation in a first direction respectively in order to move the first and second connecting members from their first position to their second position, and in a second direction so as to move the first and second connecting members from their second position to their first position.
  • the drive means comprise a reversible electric motor.
  • the electric motor preferably comprises a housing integral with the first connecting member.
  • the assistance device comprises control means arranged to control the operation of the actuating means.
  • the control means advantageously comprise a force sensor mounted on the pusher and arranged to measure the force exerted by the slide on the pusher, and control means designed to control the operation of the actuating means when the force measured by the sensor. force is greater than or equal to a predetermined value.
  • the motor comprises an encoder arranged to measure the number of revolutions of the motor for a predetermined duration
  • the control means are designed to control the operation of the motor according to various predefined control laws and to select the most appropriate control law depending on the number of revolutions measured by the encoder.
  • the number of revolutions measured by the encoder decreases as a function of the increase of the mass of the spool and that each control law is predefined to be used for a given mass range.
  • This design of the motor and the control means makes it possible to automatically adapt the control law of the motor according to the mass of the slide, and thus to use an optimum driving force to ensure that the slide is opened at a substantially identical speed. whatever the mass of the drawer.
  • the drawer is always expelled at the same opening speed and its output stroke is substantially the same.
  • the predetermined duration may be for example about one second and the measurement of the number of revolutions is preferably performed at the beginning of opening of the drawer.
  • the pusher comprises a permanent magnet or an electromagnet intended to cooperate with the drawer.
  • the encoder is also arranged to measure the number of engine revolutions at the start of assisted closing of the spool (from the moment the spool comes into contact with the pusher) and the control means are designed to select the spooling law. most appropriate control according to the number of revolutions measured by the encoder to ensure a closure of the drawer at a substantially identical speed regardless of the mass of the drawer.
  • the pusher comprises an electromagnet
  • the latter is advantageously designed to exert a force of attraction on the drawer in a first operating state and to exert a repulsive force on the drawer in a second operating state.
  • the pusher could comprise a metal plate intended to cooperate with a permanent magnet or an electromagnet mounted on the drawer.
  • the pusher comprises a damping element made of elastically deformable material and intended to cooperate with the drawer.
  • the assistance device 2 comprises a parallelepipedal support 3 intended to be mounted on the frame of the furniture M.
  • the support 3 is for example mounted directly on the frame of the cabinet, at the rear of the latter.
  • the support 3 may for example be slidably mounted on a horizontal section 4 fixed on the frame of the furniture, at the rear of the latter.
  • the assistance device 2 also comprises a pusher 5 intended to cooperate with the drawer.
  • the pusher 5 comprises a parallelepipedal body 6, a metal plate 7 mounted on the body 6 and having a central opening 8, and a damping element 9 comprising a disk-shaped mounting portion 10 interposed between the body 6 and the metal plate 7, and a cylindrical contact portion 11 protruding through the opening 8 of the metal plate.
  • the damping element 8 is preferably made of elastically deformable material, such as rubber or elastomer.
  • the contact portion 11 of the damping element 8 has a substantially flat face intended to cooperate with the rear face of the drawer.
  • the assistance device 2 further comprises connecting means, shaped deformable parallelogram, connecting the support 3 to the pusher 5 and deformable between an open position (shown on the figures 3 , 5 and 11 ) in which the pusher 5 is remote from the support 3 and a closed position (shown on the figures 2 , 4 and 10 ) in which the pusher 5 is brought closer to the support 3.
  • the connecting means comprise a first connecting member 12 having a through bore 13 unthreaded, and a second connecting member 14 having a through bore 15 internally threaded.
  • Each guide member 12, 14 is preferably made of plastic material, and advantageously of plastic material with a low coefficient of friction.
  • Each guide member 12, 14 has two hinge pins 16, 17 vertical axes combined respectively carried by two opposite faces of said connecting member.
  • the connecting means further comprise a first pair of connecting rods comprising a first connecting rod 18, the ends of which are respectively pivotally mounted on the one hand around a vertical axis represented by two articulation pins 19 carried by the support 3 and secondly around a vertical axis materialized by the two hinge pins 16 carried by the first connecting member 12, and a second connecting rod 20 whose ends are respectively pivotally mounted about a vertical axis materialized by two pins d ' articulation 21 carried by the support 3 and secondly around a vertical axis materialized by the hinge pins 17 carried by the second connecting member 14.
  • the two pairs of hinge pins 19, 21 are offset one of the other in a direction perpendicular to the direction of opening / closing of the drawer.
  • the connecting means also comprise a second pair of connecting rods comprising a third connecting rod 22, the ends of which are respectively pivotally mounted on the one hand about a vertical axis represented by two articulation pins 23 carried by the pusher 5 and on the other hand part about a vertical axis materialized by the two hinge pins 16 carried by the first connecting member 12, and a fourth connecting rod 24 whose ends are respectively pivotally mounted about a vertical axis materialized by two hinge pins 25 carried by the pusher 5 and secondly around a vertical axis shown by the two hinge pins 17 carried by the second connecting member 14.
  • the two pairs of hinge pins 23, 25 are offset one of the other in a direction perpendicular to the direction of opening / closing of the drawer.
  • Each of the first, second, third and fourth links 18, 20, 22, 24 comprises a central portion, and two lateral branches integral with the central portion. Each side branch has an eyelet near each of its ends. It should be noted that the central portions of the different connecting rods are shaped to allow recessing of the first and third connecting rods 18, 22 and a recessing of the second and fourth links 20, 24 when the connecting means are in their closed positions.
  • the assistance device 2 further comprises actuating means arranged to deform the connecting means between their open and closed positions.
  • the actuating means comprise an operating rod 26 arranged to cooperate with the first and second connecting members 12, 14 so as to relatively move the latter between a first position (shown in FIGS. figure 3 and 5 ) in which they are brought closer to one another and the connecting means are in their open position, and a second position (shown on the figures 2 and 4 ) in which they are distant from each other and the connecting means are in their closed position.
  • the operating rod 26 has a first unthreaded portion 27 mounted rotatably in the bore 13 of the first connecting member 12, and a second threaded portion 28 externally arranged to cooperate with the threaded bore 15 of the second connecting member 14. .
  • the actuating means further comprise a reversible electric motor 29 whose output shaft 30 is coupled in rotation with the operating rod 26 so as to rotate the latter respectively in a first direction so as to move the first and second connecting members 12, 14 from their first position to their second position, and in a second direction so as to move the first and second connecting members 12, 14 from their second position to their first position.
  • the electric motor 29 comprises a housing 31 secured to the first connecting member 12.
  • the housing 31 of the electric motor 29 is secured to the first connecting member 12 via a ring 32, surrounding the operating rod 26, fixed by on one side on one end of the first connecting member 12 and on the other hand on one end of the housing 31 of the motor.
  • the assistance device 2 also comprises control means arranged to control the operation of the electric motor.
  • the control means comprise a force sensor 33 mounted on the pusher 5 between the body 6 and the metal plate 7 of the pusher 5. It should however be noted that the detection zone of the force sensor 33 is interposed between the mounting portion of the damping element 8 and the body 6 of the pusher 5. The force sensor 33 is thus arranged to measure the force exerted by the slide on the pusher 5.
  • the force sensor 33 is for example mounted on the body 6 the pusher 5 by means of a double-sided adhesive or overmolded in the body 6 or the damping element 8.
  • the control means further comprise control means adapted to control the operation of the electric motor 29 when the force measured by the force sensor 33 is greater than or equal to a predetermined value.
  • the control means could for example include a microprocessor.
  • the operation of the assistance device is as follows.
  • the control means control the power supply of the electric motor 29 so that the latter rotates the operating rod 26 in the direction corresponding to a bringing together of the first and second connecting members 12, 14. follows a movement of the pusher 5 in its open position and therefore a displacement of the slide towards its open position (shown on the figure 11 ). It should be noted that the thrust exerted by the pusher 5 on the drawer is exerted solely on the beginning of the travel of the drawer towards its open position, the complete opening of the latter being realized because of the inertia related to the initial thrust.
  • control means control a supply of the motor 29 so that the latter rotates the operating rod 26 in the direction corresponding to a distance of the first and second connecting members 12, 14 and therefore to a displacement of the pusher 5 in its closed position.
  • Each end of the helical spring 44, 44 'of each connecting member 12, 14 is preferably engaged around a ring 45, 45' mounted around the operating rod 26.
  • each connecting member 12, 14 provides damping shocks generated by the contact of the drawer with the pusher 5 when closing the drawer.
  • the pusher 5 comprises a permanent magnet arranged to cooperate with the metal rear face of the drawer.
  • the operation of the assistance device is as follows.
  • the control means control the power supply of the electric motor 29 so that the latter rotates the operating rod 26 in the direction corresponding to a bringing together of the first and second connecting members 12, 14. follows a movement of the pusher 5 in its open position and an ejection of the drawer to its open position, this ejection of the drawer being possible because the attraction force exerted by the permanent magnet carried by the pusher on the drawer is low compared to the force of thrust exerted by the pusher 5 on the drawer during movement of the pusher to its open position. The control means then control the stopping of the electric motor 29 so that the pusher 5 remains in its open position until a subsequent closure of the drawer.
  • the control means then control the supply of the electric motor 29 so that the latter rotates the operating rod 26 in the direction corresponding to a distance from the first and second connecting members 12, 14. It follows a displacement of the pusher 5 in its closed position and a displacement of the slide in its closed position due to the cooperation between the permanent magnet carried by the pusher and the slide. Once in the closed position, the drawer is held in this position because of this cooperation between the permanent magnet and the drawer.
  • the Figures 18 and 19 represent an assistance device according to a third embodiment which differs from that shown in the Figures 13 to 17 essentially in that the third and fourth links 22, 24 are pivotally mounted respectively on the first and second connecting rods 18, 20 about axes of rotation 46, 47 offset from the axis of the operating rod 26 and relative to to the rotation spindles 16, 17.
  • the axis of rotation 46 is embodied by two lugs respectively formed on two opposite faces of the first connecting rod 18, while the axis of rotation 47 is embodied by two lugs respectively formed on two opposite faces of the second connecting rod 20.
  • the invention is not limited to the embodiments of this assistance device, described above as examples, it encompasses all the variants.
  • the support could be slidably mounted on a vertical section fixed to the back of the piece of furniture or on a fixing bracket fixed to a lateral portion of the piece of furniture.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drawers Of Furniture (AREA)
EP11154463A 2010-02-16 2011-02-15 Vorrichtung zum Öffnen einer Schublade eines Möbelstücks oder Ähnlichem Withdrawn EP2359716A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1051101A FR2956298B1 (fr) 2010-02-16 2010-02-16 Dispositif d'assistance a l'ouverture d'un tiroir d'un meuble ou similaire

Publications (1)

Publication Number Publication Date
EP2359716A1 true EP2359716A1 (de) 2011-08-24

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EP11154463A Withdrawn EP2359716A1 (de) 2010-02-16 2011-02-15 Vorrichtung zum Öffnen einer Schublade eines Möbelstücks oder Ähnlichem

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EP (1) EP2359716A1 (de)
FR (1) FR2956298B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014004317U1 (de) * 2014-05-22 2015-08-26 Grass Gmbh Öffnungsvorrichtung für ein bewegbares Möbelteil
USD881617S1 (en) * 2017-12-22 2020-04-21 Julius Blum Gmbh Drawer part
USD881618S1 (en) * 2017-12-22 2020-04-21 Julius Blum Gmbh Drawer part

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1342066A (fr) * 1962-01-08 1963-11-02 Emanuel Fahrenberger K G Armoire à rayons ou autres organes coulissants
FR2181287A5 (de) 1972-04-19 1973-11-30 Sperry Rand Corp
DE202006011039U1 (de) * 2006-07-14 2007-12-06 Alfit Ag Vorrichtung zum Bewegen von zueinander bewegbaren Möbelteilen und Möbel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1342066A (fr) * 1962-01-08 1963-11-02 Emanuel Fahrenberger K G Armoire à rayons ou autres organes coulissants
FR2181287A5 (de) 1972-04-19 1973-11-30 Sperry Rand Corp
DE202006011039U1 (de) * 2006-07-14 2007-12-06 Alfit Ag Vorrichtung zum Bewegen von zueinander bewegbaren Möbelteilen und Möbel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014004317U1 (de) * 2014-05-22 2015-08-26 Grass Gmbh Öffnungsvorrichtung für ein bewegbares Möbelteil
USD881617S1 (en) * 2017-12-22 2020-04-21 Julius Blum Gmbh Drawer part
USD881618S1 (en) * 2017-12-22 2020-04-21 Julius Blum Gmbh Drawer part

Also Published As

Publication number Publication date
FR2956298B1 (fr) 2012-04-06
FR2956298A1 (fr) 2011-08-19

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