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EP1097660B1 - Fermeture à glissière pour reglage de la position des chaises ou parties des chaises - Google Patents

Fermeture à glissière pour reglage de la position des chaises ou parties des chaises Download PDF

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Publication number
EP1097660B1
EP1097660B1 EP99830689A EP99830689A EP1097660B1 EP 1097660 B1 EP1097660 B1 EP 1097660B1 EP 99830689 A EP99830689 A EP 99830689A EP 99830689 A EP99830689 A EP 99830689A EP 1097660 B1 EP1097660 B1 EP 1097660B1
Authority
EP
European Patent Office
Prior art keywords
plates
rod
blocking
blocking position
runner
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.)
Expired - Lifetime
Application number
EP99830689A
Other languages
German (de)
English (en)
Other versions
EP1097660A1 (fr
Inventor
Claudio Angelelli
Antonella Col
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE69926375T priority Critical patent/DE69926375D1/de
Priority to AT99830689T priority patent/ATE300208T1/de
Priority to EP99830689A priority patent/EP1097660B1/fr
Publication of EP1097660A1 publication Critical patent/EP1097660A1/fr
Application granted granted Critical
Publication of EP1097660B1 publication Critical patent/EP1097660B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/027—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of clamps or friction locking members
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/0325—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of clamps or friction locking members
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs

Definitions

  • This invention concerns, in general, seating structures like office chairs and armchairs, car seats, or any others requiring regulation and, in particular, concerns a device for choosing and stabilising the user positions of such chairs and/or their parts.
  • Such a device allows a gradual regulation, that is, not in steps, of the angle between the two elements connected by a joint, such as the seat and back of a chair, thanks to the use, as a positioning element, of a smooth shaft and, as a blocking element, of a plate that acts upon said shaft.
  • These devices generally comprise a sliding rod and at least a pair of gripping or frictional elements designed to oscillate between an unlocked position wherein are disposed substantially perpendicular to the rod to permit the free movement of the same, and a sloped locked position wherein are in frictional engagement with the rod for preventing any movement of the same, at least in one direction.
  • the aim, however, of the present invention is to improve such a sliding blocking device and make it suitable and specifically applicable to oscillating and synchronised chairs, with the dual function of being able to vary the inclination of the seat and back freely at will, with no obligatory positions and, at the same time, preventing the back from moving suddenly and violently towards the chair occupant, hitting the person's back, every time it is unblocked to adjust the position.
  • the proposed blocking device 10 is applied to an oscillating group for office chairs, which includes: a fixed body 11, to be applied to the top of an extendable upright support - not represented - and intended to carry the seat; an oscillating support 12, hinged to said body 11 with an oscillating cross shaft 13 and intended to carry a back with an adjustable angle to the seat; and an adjustable spring between the fixed body 11 and the oscillating support 12.
  • the blocking device 10 includes a cylindrical rod 15 and two gripping plates 16,17.
  • the rod 15 is connected, at the back, to the oscillating support 12 by means of a cross pin 18, parallel to the oscillating shaft 13 and passing through holes 19, located in the fixed body 11.
  • the rod 15 extends from the back to the front under the seat, inside the body 11.
  • Said rod 15 has the front end held in a block 20, fixed to the body 11, and may have a smooth surface or, preferably, a knurled or rough one.
  • the two gripping plates 16,17 are positioned at right angles to the rod 15, each with a foot 16',17', forming a fulcrum with the body 11. Both the plates 16,17 have a cross-hole 16",17" and the rod 15 passes through said holes.
  • the plates 16,17 can be moved between an orthogonal non-blocking position and a blocking position sloped with respect to the rod 15. In the orthogonal non-blocking position, the axis of the holes in the plates coincides with the rod axis, so that the latter may pass through said holes, relatively to the plates. In the sloped blocking position, the edge of the hole on each plate interacts with the external surface of the rod, with a gripping action that prevents the axial movements of the rod itself.
  • the plates 16,17 have a fulcrum for oscillating between the orthogonal and sloped positions, the first in the opposite direction to the second and in such a way that they both act upon, and block, the rod - one against the axial movements of the rod in one direction and the other against the movements in the other direction.
  • the plates 16,17 are normally kept in their sloped blocking position by an elastic system 22 and can be moved into their non-blocking position by means of a command lever 23 with the help of a runner 24 that slides relatively to the rod 15.
  • Said lever is designed for a dual function: to control the height regulation of the support upright of the chair; to command the blocking/un-blocking device by means of the runner 24.
  • This runner 24 is situated in a position between the pin 18 of the rod 15 and the plates 16,17, and can move from a backward blocking position, near said pin, to a forward non-blocking position, near said plate.
  • the command lever 23 passes, from the outside, through a hole 25 made in one side of the fixed body 11, extending through a ring hole 26 set in a dividing wall 27 fixed to said body 11 and with its end using the runner 24.
  • the lever 23 has an arm 28, designed to control the height regulation of the support upright and forming, with one of its parts, a shoulder 28' designed to interact with a blocking tooth 29 when the lever is in the non-blocking position of the device 10.
  • the command lever 23 can move forward axially, towards the runner 24, according to the arrow A (Fig. 1), and backwards according to arrow B, as well as make angular movements, according to arrow C, with its fulcrum in the hole 25 in the side of the body 11, and rotational movements according to arrow D.
  • the axial and angular movements are intended to control the runner, while the rotation is intended to control the support upright.
  • the elastic system 22 which keeps the gripping plates in the blocking position includes a first spring 30, placed between the two plates 16,17, on a small guiding rod 31.
  • This small rod 31 is fastened at one end to the first plate 16, the one which is furthest from the runner, and passes freely through corresponding holes made in the other plate 17 and in the runner 24.
  • the spring 30 is mounted with a certain tension in such a way as to keep the plates 16,17 apart and in a position to interact with the rod 15.
  • the system 22 includes, furthermore, a second spring 32, positioned in the runner 24 and in line with a pusher 33 which extends forwards across the plates without impediment until it comes to rest against a part of the horizontally pivoted lever 34, which has its fulcrum in 34' at the guiding block 20 of the rod 15, with its other side partly resting against the small rod 31 fixed to the plate 16 and carrying the first spring 30.
  • the first spring 30 keeps the plates 16,17 apart, at an angle with respect to the rod 15, and, therefore, in the position to interact with the rod and to block the back support 12, with respect to the seat bearing body.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Sliding Valves (AREA)

Claims (4)

  1. Chaise ou structure de siège telle que celle des chaises de bureau, fauteuils, sièges d'autocar et dispositifs similaires, comprenant:
    un corps immobile (11) fixé à un montant de support et portant le siège,
    un support oscillant (12) articulé sur le corps fixe, portant le dossier et les moyens élastiques destinés à relier le corps fixe et le support oscillant tout en étant en mesure de s'opposer aux oscillations de ce dernier,
    un mécanisme (10) destiné à bloquer le balancement du support oscillant portant le dossier, et ce dans n'importe quelle position par rapport au corps fixe portant le siège,
    une tige cylindrique (15) reliée au support oscillant (12), s'étendant vers l'avant au-dessous du corps fixe (11) et coulissant à travers un bloc directeur (20),
    deux plaques de serrage (16, 17) positionnées obliquement par rapport à la tige cylindrique (15), dont chacune a un pied pivotant sur le corps fixe et dispose d'un orifice pour permettre à la tige de passer, et dans laquelle:
    les plaques (16, 17) peuvent se déplacer à partir d'une position orthogonale d'absence de blocage, où elles sont perpendiculaires à la tige cylindrique et où l'axe de leurs croisillons coïncide avec l'axe de la tige afin de permettre à celle-ci de coulisser, et à partir d'une position de blocage inclinée, où le bord des croisillons entre en interaction avec la surface extérieure de la tige en la bloquant axialement;
    les plaques, lorsqu'elles sont en position de blocage inclinée, sont positionnées en selon un angle formant des directions opposées, de telle sorte qu'une plaque puisse agir pour bloquer la tige dans un sens tandis que l'autre plaque fait la même chose en sens contraire;
    entre la tige cylindrique (15) et les plaques de serrage (16, 17), se trouvent des moyens destinés à maintenir les plaques, en temps normal, en position de blocage inclinée et à faire bouger ces plaques, sur commande, pour les mettre en position orthogonale d'absence de blocage;
    les plaques (16, 17) sont maintenues, en temps normal, en position de blocage inclinée par un ressort (30) situé entre lesdites plaques et monté sur un petit axe directeur (31) fixé à l'une des plaques et coulissant par rapport à l'autre,
    les moyens destinés à mettre les plaques (16, 17) en position orthogonale d'absence de blocage comprennent un coulisseau (24) qui peut se déplacer par rapport à la tige cylindrique (15) en allant d'une position postérieure située près de la charnière de la tige cylindrique jusqu'à une position antérieure située près des plaques, un ressort (32) monté dans le coulisseau, dans le prolongement d'un poussoir (33) qui s'avance à travers les plaques pour atteindre un levier (34) qu'il fait pivoter horizontalement, ce dernier ayant son point d'appui sur le bloc directeur de la tige cylindrique et s'appuyant contre une plaque adjacente au bloc précité, de façon à ce que le mouvement du coulisseau, depuis sa position postérieure jusqu'à sa position antérieure, corresponde en premier lieu au mouvement de l'une des plaques et, en second lieu, au mouvement de l'autre plaque lorsqu'elle se met en position d'absence de blocage.
  2. Mécanisme selon la revendication 1, dans lequel la tige cylindrique (15) est reliée au support oscillant (12) grâce à une cheville d'entraínement (18), en passant à travers des orifices annulaires (19) situés dans le corps fixe.
  3. Mécanisme selon les revendications 1 ou 2, dans lequel le coulisseau (24) est relié à un levier de commande (23) en mesure d'effectuer des mouvements axiaux en se rapprochant ou en s'éloignant dudit coulisseau, ainsi que des mouvements angulaires sur son propre point d'appui ; ce levier étant en outre capable de pivoter de manière à permettre de contrôler les moyens de réglage de la hauteur du montant supportant la chaise.
  4. Mécanisme selon l'une quelconque des revendications 1 à 3, dans lequel la tige cylindrique (15) peut posséder une surface lisse ou rugueuse.
EP99830689A 1999-11-02 1999-11-02 Fermeture à glissière pour reglage de la position des chaises ou parties des chaises Expired - Lifetime EP1097660B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69926375T DE69926375D1 (de) 1999-11-02 1999-11-02 Schiebe- oder Absperrungseinrichting zum Einstellen oder Verändern einer Position von Stühlen oder Teilen davon
AT99830689T ATE300208T1 (de) 1999-11-02 1999-11-02 Schiebe- oder absperrungseinrichting zum einstellen oder verändern einer position von stühlen oder teilen davon
EP99830689A EP1097660B1 (fr) 1999-11-02 1999-11-02 Fermeture à glissière pour reglage de la position des chaises ou parties des chaises

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99830689A EP1097660B1 (fr) 1999-11-02 1999-11-02 Fermeture à glissière pour reglage de la position des chaises ou parties des chaises

Publications (2)

Publication Number Publication Date
EP1097660A1 EP1097660A1 (fr) 2001-05-09
EP1097660B1 true EP1097660B1 (fr) 2005-07-27

Family

ID=8243655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99830689A Expired - Lifetime EP1097660B1 (fr) 1999-11-02 1999-11-02 Fermeture à glissière pour reglage de la position des chaises ou parties des chaises

Country Status (3)

Country Link
EP (1) EP1097660B1 (fr)
AT (1) ATE300208T1 (fr)
DE (1) DE69926375D1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1466417A (fr) * 1965-12-01 1967-01-20 Publicite Francaise Dispositif de blocage mécanique et ses applications, en particulier aux sièges réglables
US4387926A (en) * 1981-06-26 1983-06-14 Rockwell International Corporation Seat positioner
US4452098A (en) * 1982-07-02 1984-06-05 General Engineering & Manufacturing Corp. Locking and positioning device for reclining seats
US4441381A (en) * 1982-09-30 1984-04-10 General Engineering & Manufacturing Corp. Locking and positioning apparatus for reclining seats
US5105486A (en) * 1990-06-18 1992-04-21 Joerns Healthcare Inc. Adjustable bed
GB2278772A (en) * 1993-06-10 1994-12-14 Johnson Controls Adwest Lever actuated seat recliner

Also Published As

Publication number Publication date
DE69926375D1 (de) 2005-09-01
ATE300208T1 (de) 2005-08-15
EP1097660A1 (fr) 2001-05-09

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