EP0489961B1 - Dispositif d'inclinaison pour sièges - Google Patents

Dispositif d'inclinaison pour sièges Download PDF

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Publication number
EP0489961B1
EP0489961B1 EP90124041A EP90124041A EP0489961B1 EP 0489961 B1 EP0489961 B1 EP 0489961B1 EP 90124041 A EP90124041 A EP 90124041A EP 90124041 A EP90124041 A EP 90124041A EP 0489961 B1 EP0489961 B1 EP 0489961B1
Authority
EP
European Patent Office
Prior art keywords
bearer
backrest
box
seat plate
locking
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
EP90124041A
Other languages
German (de)
English (en)
Other versions
EP0489961A1 (fr
Inventor
Dagobert Bögle
Manfred Schlegel
Horst Ziegler
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.)
Christof Stoll GmbH and Co KG
Original Assignee
Christof Stoll 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 Christof Stoll GmbH and Co KG filed Critical Christof Stoll GmbH and Co KG
Priority to DE9017909U priority Critical patent/DE9017909U1/de
Priority to AT90124041T priority patent/ATE95680T1/de
Priority to DE90124041T priority patent/DE59003096D1/de
Priority to EP90124041A priority patent/EP0489961B1/fr
Priority to US07/795,765 priority patent/US5294178A/en
Publication of EP0489961A1 publication Critical patent/EP0489961A1/fr
Application granted granted Critical
Publication of EP0489961B1 publication Critical patent/EP0489961B1/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
    • A47C1/031—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
    • 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
    • A47C1/03238—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 peg-and-notch or pawl-and-ratchet mechanism

Definitions

  • Such a tilting device is known, for example, from EP-B1-0 233 974 by the same applicant.
  • the basic elements of the mechanics are designed for the more complicated simultaneous mechanics.
  • the construction effort and the manufacturing costs are therefore considerable, because in principle a simultaneous mechanism must be "leaned” in order to make it easier Obtain permanent contact mechanics.
  • the relatively expensive housing made of cast metal or fiber-reinforced plastic is retained, the complicated, optionally applicable locking mechanism for locked positions and other special mechanical designs.
  • the object of the present invention is now to provide a chair mechanism in the form of an inclination device which is characterized by a simplified structure, can be produced inexpensively in larger series and, based on the simpler permanent contact mechanism, by a few additional parts can be expanded with a simultaneous mechanism.
  • the essence of the invention is to provide, as a receptacle for the chair column and as a support for the seat and backrest, a narrow support box which consists of a few sheet metal parts and is located between the backrest cheeks and which supports the seat by an additional sheet metal cross member in the front part guaranteed on a broad basis.
  • Such a carrier box can be produced easily and inexpensively, can be easily upgraded with additional parts if required (e.g. for the more complicated simultaneous mechanics) and achieves a very high bending and torsional stiffness due to the box construction with low use of materials.
  • steel sheet is preferred as the material for the sheet metal parts.
  • a first preferred exemplary embodiment of a chair mechanism according to the invention is shown in the form of the simpler permanent contact mechanism in FIG. 1.
  • the centerpiece of this inclination device is an only partially visible support box 4, which - as can be seen more clearly in FIGS. 5a and 5b - consists of a box-shaped lower part 2, a lid 1 arranged thereon and one attached to the front (in relation to the chair) Cross member 3 is composed.
  • Lower part 2, cover 1 and cross member 3 are preferably deep-drawn or folded parts made of sheet steel, which are spot-welded to the finished carrier box 4.
  • the cross member 3 can either - as shown in Fig. 5a - be a separate sheet metal part which is welded to the lower part 2 and the lid 1, or can be formed together with the lower part 2 from a board by appropriate folding.
  • the carrier box 4 receives the (usually rotatable) chair lower part. This is done either in a manner known per se by means of a conical plug connection or directly by welding a chair column from the lower chair part (4a in FIG. 1) into the carrier box 4.
  • a receiving cone 2a is provided in the carrier box 4, which is molded from the lower part 2 can be or, for example, as a separate part (in particular an extruded part) is introduced into the carrier box 4 in a non-positive or positive manner.
  • two tabs 5 and 6 are folded on one side, which have through holes and are part of a locking device, which will be explained later in connection with FIGS. 3, 4a and 4b.
  • a seat plate 16 and a backrest support 18 are attached simultaneously.
  • the seat plate 16 is supported in the front area by means of support cams 22 and counter cams 24 (in principle displaceable) on the cross member 3 and in turn carries a seat cushion (not shown in FIG. 1).
  • a seat support 34 In the rear area, in the case of the permanent contact mechanism, it is firmly connected to the carrier box 4 by a seat support 34.
  • the backrest support 18 is angular with an upper and a lower leg. It is rotatably mounted on the carrier box 4 in the middle region of its lower leg and carries a backrest (also not shown) on the upper leg.
  • the backrest support 18 is also constructed asymmetrically, i.e. it consists (at least in its lower leg) of two unequal long, parallel, spaced, U-shaped backrest cheeks 8 and 9 (Fig. 3).
  • the shorter backrest cheek 9 ends directly behind the pivot bearing.
  • the longer backrest cheek 8 sits on the side of the locking device and is shaped at its front end in such a way that locking bores 10 can be introduced there.
  • the backrest support 18 is rotatably mounted on an axle shaft 19.
  • the axle shaft 19 is in turn connected to the carrier box 4, for example in corresponding bores pressed in.
  • Both backrest cheeks 8 and 9 are connected to one another behind the rear end of the carrier box 4 in a torsionally rigid manner, preferably by means of a welded (round or angular) pipe section 35a. Further cross connections such as pipe section 35b are provided elsewhere in order to form an end stop for the height adjustment range of the backrest and to be able to fasten trim parts at the same time.
  • the two brackets 5 and 6 are bent on one side on the cross member 3 and have through bores for guiding a locking bolt 7. Since, due to structural tolerances, the locking bolt 7 is never exactly aligned with the associated locking bores 10 in the backrest cheek 8, the locking bolt 7 is preferably guided in a tolerance compensation bearing 11 which is displaceably mounted perpendicularly to the direction of movement of the bolt (FIG. 3).
  • the tolerance compensation bearing 11, which consists for example of a resistant plastic, is clipped into a correspondingly shaped opening in the tab 6.
  • a suitably shaped tip on the locking bolt 7 in connection with the displaceable tolerance compensation bearing 11 ensures that the locking bolt 7 is automatically positioned eccentrically in one of the locking bores 10.
  • a locking spring 12 always presses the locking bolt 7 into one of the locking bores 10, correspondingly pretensioned. If the locking bolt is pulled outward, the locking is released. The backrest can then be used as a permanent contact backrest.
  • the locking device is particularly simple, inexpensive and easy to use when the locking bolt 7 is cranked at the end and the cranked end is guided at a certain distance from the bolt axis in a recess which has the shape of a threaded segment 15a (FIG. 4b) . Due to the pitch of the threaded segment 15a, the locking bolt 7 is displaced in the direction of the bolt axis as soon as the cranked end rotates against the threaded segment 15a.
  • the locking pin 7 pulls out of the locking device against the increasing force of the locking spring 12. Conversely, it locks itself.
  • the threaded segment 15a acts as a reduction.
  • Correspondingly shaped recesses at the ends of the threaded segment 15a cause the locking bolt to remain unlocked or locked in its position.
  • the threaded segment 15a is preferably designed as a link guide 15b (FIG. 4a).
  • a stepped sleeve 13 is pushed over the cranked end of the locking bolt 7.
  • the stepped sleeve 13 has an edge which, by means of a correspondingly large diameter, in principle prevents the sleeve from being pressed out of the link by an internal spring 14 regardless of the position of the bolt end.
  • the diameter of the step under the edge fits into the larger link cutouts in the locking and unlocking position of the bolt, but is too large for the actual guide link. Only when the stepped sleeve 13 is pressed upwards against the force of the spring 14 can the bolt end move through the backdrop. The defined movements - first press and then move - prevent the locking device from being triggered unintentionally, e.g. by the user hits the end of the bolt.
  • This trigger protection can of course also be reversed in its mode of action by pulling the stepped sleeve 13 downward against a tension spring which releases the backdrop.
  • the link guide 15b is preferably the molded-on design of a seat cover 17 (FIGS. 1 and 4a).
  • the seat cover 17 is either fixed to the seat or to the carrier box 4.
  • the connection to the seat plate 16 has been selected. This is because there is a larger space available, and the technical requirements for a simple snap or clip connection are better for both parts, especially if they are injection molded from plastic.
  • the seat plate 16 is rotatably mounted on the backrest support 18 behind the axle shaft 19 by means of a further axle shaft 31.
  • the bores required for this and the force-transmitting connecting part are preferably realized in a particularly simple manner by integrally molded rib seat bearings 21.
  • the seat plate 16 is a molded part, e.g. is injection molded from plastic.
  • the axle shaft 31 in the longitudinal direction in the usual way, e.g.
  • the seat is secured by two lock washers, axially secured, and can be tilted backwards, so that it cannot be moved in the longitudinal and transverse directions.
  • the rib seat bearings 21, as can be seen from FIG. 1, can also be present in the permanent contact mechanism for reasons of simplified production, but then without function.
  • the inclination ratio of the seat plate 16 or the seat to the backrest is determined by the position of the rear and front support point of the seat plate 16 in relation to the position of the axle shaft 19.
  • the front support point of the seat plate 16 is close as possible to the front edge of the seat.
  • the seat plate 16 is supported in the front area on the right and left on the cross member 3 by the molded support cams 22.
  • the support cams 22 allow a certain change in inclination unhindered by their rounded shape. Lateral shifting is preferably prevented by a respective lateral holding rib 23, which is formed on the outside next to the end of the cross member 3 on the left and right of the seat plate 16. Hooks with molded counter cams 24 coming from the top of the seat plate 16, encompassing the cross member 3 on the right and left, hold the seat plate 16 upwards.
  • the hooks are preferably also molded onto the seat plate 16.
  • this fastening system can also be used for the permanent contact mechanism, as shown in FIG. 1.
  • the described rear and front fastenings are part of a single seat plate 16, which can be used unchanged for both mechanical versions.
  • the seat cover 17 with the link guide 15b and the locking bolt 7 guided therein can also be taken over unchanged: the seat changes its inclination and position relative to the locking bolt 7 mounted in the cross member 3.
  • the distance in width between the backrest support 18 and the bent end of the Locking bolt 7 does not change, however. This ensures a safe function with the chosen construction.
  • the slight changes in position in the longitudinal direction that result when the seat is tilted are irrelevant in this regard.
  • the predominantly vertically effective path change of the backrest support 18 is transmitted to the springs by means of pull cables 27, which are deflected by deflection rollers 28 mounted on an angle lever 26 or - to save height - deflection segments 28a.
  • one of the two simultaneous compensating springs (25b) in terms of its length and therefore its spring force. This can e.g. done via a twist-proof threaded rod 29 with a molded-in eyelet for the spring.
  • a hollow knob 30 with a thread which is supported on the cross member and receives the free end of the threaded rod, enables the desired individual setting.
  • the support cams 22 can advantageously also be replaced by a roller 33 which is clipped into ribs 32 formed on the seat plate and stored therein (FIG. 2b).
  • Another possibility provides coupling links (e.g. made of plastic) which are rotatably attached to the right and left of the seat plate 16 and to a console.

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)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Claims (10)

  1. Dispositif d'inclinaison pour un siège, comprenant
    (a) une base qui peut être fixée à un piètement du siège, de préférence à un pied de chaise (4a), et qui sert de support pour une assise et un dossier;
    (b) un support de dossier (18) angulaire avec une composante inférieure et une composante supérieure, ledit support de dossier (18) étant placé de manière à pouvoir pivoter à la base, dans la partie médiane de sa composante inférieure, au moyen d'un appui à pivot et consistant, au moins dans sa composante inférieure, en deux portions de dossier (8, 9) disposées parallèlement à une certaine distance l'une de l'autre;
    (c) une plaque d'assise (16), supportée par la base au moins dans sa partie avant; et
    (d) au moins un élément à ressort, fixé d'un côté à la base, et, de l'autre côté, en prise avec le support de dossier (18) derrière l'appui à pivot et exerçant une force dirigée vers le haut sur le support de dossier (18);
    caractérisé en ce que
    (e) la base est conçue comme un caisson porteur (4) fermé étroit, constitué de plusieurs pièces en tôle et disposé entre les portions de dossier (8, 9); et
    (f) le caisson porteur (4) présente, à sa partie avant, une traverse (3) en tôle faisant saillie latéralement au-dessus des portions de dossier (8, 9) allongées et supportant la plaque d'assise (16) dans sa partie avant.
  2. Dispositif d'inclinaison selon la revendication 1, caractérisé en ce que
    (a) il est prévu un dispositif de blocage, avec un goujon de blocage (7), qui peut venir en prise dans une pluralité de trous de blocage (10) prévus à l'avant du support de dossier (18);
    (b) les trous de blocage (10) sont prévus directement à l'extrémité avant de l'une des portions de dossier (8, 9); et
    (c) la traverse (3) présente, du côté faisant saillie au-dessus de la portion de dossier (8) pourvue des trous de blocage (10), deux éclisses (5,6) à une certaine distance l'une de l'autre, placées perpendiculairement à la traverse (3), dans lesquelles est guidé le goujon de blocage (7).
  3. Dispositif d'inclinaison selon la revendication 1, caractérisé en ce que
    (a) les pièces en tôle du caisson porteur (4) et de la traverse (3) sont des pièces en tôle embouties ou des pièces pliées;
    (b) le caisson porteur (4) comprend une partie inférieure (2) en forme de caisson et un couvercle (1); et
    (c) le couvercle (1), la partie inférieure (2) et la traverse (3) sont assemblés entre eux par une pluralité de points de soudure.
  4. Dispositif d'inclinaison selon la revendication 2, caractérisé en ce que
    (a) les éclisses (5, 6) sont conçues en tant que pièces en tôle pliées provenant de la traverse (3); et
    (b) un appui de rattrapage des tolérances (11) est prévu sur l'une des éclisses (5, 6), dans lequel est guidé le goujon de blocage (7) avec jeu latéral.
  5. Dispositif d'inclinaison selon la revendication 1, caractérisé en ce que la plaque d'assise (16) est placée sur la traverse (3) de manière à pouvoir être déplacée horizontalement dans sa partie avant.
  6. Dispositif d'inclinaison selon la revendication 5, caractérisé en ce que
    (a) la plaque d'assise (16) est assemblée rigidement avec le caisson porteur (4) dans sa partie arrière; et
    (b) au moins un élément à ressort comprend un ressort compensateur permanent (20), fixé d'un côté à l'extrémité arrière du caisson porteur (4).
  7. Dispositif d'inclinaison selon la revendication 5, caractérisé en ce que
    (a) la plaque d'assise (16) est placée de manière à pouvoir pivoter dans sa partie arrière sur le support de dossier (18); et
    (b) au moins un élément à ressort comprend plusieurs ressorts compensateurs simultanés (25a,b) disposés parallèlement au caisson porteur (4), fixés chacun par un côté à la traverse (3), et chacun en prise de l'autre côté avec le support de dossier (18) par l'intermédiaire d'un câble tracteur (27) guidé en mouvement.
  8. Dispositif d'inclinaison selon l'une quelconque des revendications 5 à 7, caractérisé en ce que pour positionner la plaque d'assise (16) sur le caisson porteur (4)
    (a) il est prévu des supports de siège nervurés (21) dans la partie arrière de la plaque d'assise (16);
    (b) une partie de la traverse (3) est guidée horizontalement dans la partie avant de la plaque d'assise (16) entre des bossages d'appui (22) ou un rouleau (33) s'étendant dans les nervures (32) et des contre-bossages (24); et
    (c) les supports de siège nervurés (21), les bossages d'appui (22) et les contre-bossages (24) sont réalisés sous forme de pièces moulées à la plaque d'assise (16).
  9. Dispositif d'inclinaison selon la revendication 1, caractérisé en ce que
    (a) l'appui à pivot pour le support de dossier (18) comprend un axe (19), qui est pressé dans le caisson porteur (4); et
    (b) il est prévu, pour la fixation du caisson porteur (4) au piètement du siège, un cone de réception (2a) pressé dans le caisson porteur (4).
  10. Dispositif d'inclinaison selon la revendication 1, caractérisé en ce que
    (a) le goujon de blocage (7) du dispositif de blocage est coudé perpendiculairement à l'axe du goujon à son extrémité éloignée des trous de blocage (10); et
    (b) l'extrémité coudée est guidée, au moyen d'une douille (13) étagée appliquée élastiquement sur celle-ci, dans un logement qui présente la forme d'un segment de taraudage (15a) et qui est conçu comme un guide de coulisse (15b).
EP90124041A 1990-12-13 1990-12-13 Dispositif d'inclinaison pour sièges Expired - Lifetime EP0489961B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE9017909U DE9017909U1 (de) 1990-12-13 1990-12-13 Neigungsvorrichtung für ein Sitzmöbel
AT90124041T ATE95680T1 (de) 1990-12-13 1990-12-13 Neigungsvorrichtung fuer ein sitzmoebel.
DE90124041T DE59003096D1 (de) 1990-12-13 1990-12-13 Neigungsvorrichtung für ein Sitzmöbel.
EP90124041A EP0489961B1 (fr) 1990-12-13 1990-12-13 Dispositif d'inclinaison pour sièges
US07/795,765 US5294178A (en) 1990-12-13 1991-11-21 Tilt device for seat furniture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90124041A EP0489961B1 (fr) 1990-12-13 1990-12-13 Dispositif d'inclinaison pour sièges

Publications (2)

Publication Number Publication Date
EP0489961A1 EP0489961A1 (fr) 1992-06-17
EP0489961B1 true EP0489961B1 (fr) 1993-10-13

Family

ID=8204836

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90124041A Expired - Lifetime EP0489961B1 (fr) 1990-12-13 1990-12-13 Dispositif d'inclinaison pour sièges

Country Status (4)

Country Link
US (1) US5294178A (fr)
EP (1) EP0489961B1 (fr)
AT (1) ATE95680T1 (fr)
DE (2) DE9017909U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19640564A1 (de) * 1996-10-01 1998-04-02 Stoll Sedus Ag Sitzmöbel mit neigbarem Sitz und Rückenlehne

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5810439A (en) * 1996-05-09 1998-09-22 Haworth, Inc. Forward-rearward tilt control for chair
US5681085A (en) * 1996-06-18 1997-10-28 Industrias Ideal, S.A. De C.V. Rocking armchair with reclining seat and back
ITTO980034A1 (it) 1998-01-16 1999-07-16 Miotto Int Comp Dispositivo meccanico per il controllo della movimentazione sincrona d i sedile e schienale di una seduta.
DE10048783A1 (de) 2000-09-29 2002-05-29 Stoll Sedus Ag Stuhl mit neigbarem Sitz
ITTV20030021A1 (it) * 2003-02-12 2004-08-13 O M S Spa Dispositivo meccanico, particolarmente per la movimentazione di sedile e schienale di una seduta.
DE10309922A1 (de) * 2003-03-07 2004-09-16 Dauphin Entwicklungs- Und Beteiligungs-Gmbh Stuhl, insbesondere Bürostuhl
KR20050100899A (ko) * 2004-04-16 2005-10-20 기아자동차주식회사 자동차용 리어시트백 리클라이닝 장치
DE202005006960U1 (de) * 2005-04-28 2006-08-31 Bock 1 Gmbh & Co. Kg Synchronmechanik
US7278685B1 (en) * 2006-07-05 2007-10-09 Tung Yu Oa Co., Ltd. Recliner
EP1946674B1 (fr) * 2007-01-22 2009-12-16 Sedus Stoll AG Chaise à assise réglable
TW201204292A (en) * 2010-07-30 2012-02-01 guo-xiong Lin Office chair with hidden switch
IT201700112144A1 (it) * 2017-10-06 2019-04-06 Co Fe Mo Ind S R L Sistema di oscillazione per sedie

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
US3356414A (en) * 1966-03-07 1967-12-05 Doerner Products Co Ltd Chair control
US4125288A (en) * 1977-09-14 1978-11-14 Hunter George T Reclining seat
AT378320B (de) * 1982-05-10 1985-07-25 Zuend & Co Ag K Sitzmoebel
JPS59207112A (ja) * 1983-05-10 1984-11-24 メ−コ−工業株式会社 椅子
EP0179185B1 (fr) * 1984-10-24 1990-06-13 Bürositzmöbelfabrik Friedrich-W. Dauphin GmbH & Co. Chaise, notamment chaise de bureau
DE3666131D1 (en) * 1986-02-27 1989-11-16 Stoll Kg Christof Tilting device for sitting-furniture
JPH0520199Y2 (fr) * 1988-11-30 1993-05-26

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19640564A1 (de) * 1996-10-01 1998-04-02 Stoll Sedus Ag Sitzmöbel mit neigbarem Sitz und Rückenlehne

Also Published As

Publication number Publication date
US5294178A (en) 1994-03-15
DE9017909U1 (de) 1992-12-03
DE59003096D1 (de) 1993-11-18
ATE95680T1 (de) 1993-10-15
EP0489961A1 (fr) 1992-06-17

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