EP0198056B1 - Sitzträger für stühle, insbesondere arbeitsdrehstühle - Google Patents

Sitzträger für stühle, insbesondere arbeitsdrehstühle Download PDF

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Publication number
EP0198056B1
EP0198056B1 EP19850905388 EP85905388A EP0198056B1 EP 0198056 B1 EP0198056 B1 EP 0198056B1 EP 19850905388 EP19850905388 EP 19850905388 EP 85905388 A EP85905388 A EP 85905388A EP 0198056 B1 EP0198056 B1 EP 0198056B1
Authority
EP
European Patent Office
Prior art keywords
seat
base body
bracket
transverse pin
plate fastening
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
EP19850905388
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0198056A1 (de
Inventor
Konrad Neumüller
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.)
Sifa Sitzfabrik GmbH
Original Assignee
Neumueller Konrad
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
Priority claimed from DE3501910A external-priority patent/DE3501910C2/de
Priority claimed from DE19853515916 external-priority patent/DE3515916A1/de
Application filed by Neumueller Konrad filed Critical Neumueller Konrad
Priority to AT85905388T priority Critical patent/ATE59760T1/de
Publication of EP0198056A1 publication Critical patent/EP0198056A1/de
Application granted granted Critical
Publication of EP0198056B1 publication Critical patent/EP0198056B1/de
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
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • 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

  • the invention relates to a seat support for chairs, in particular work swivel chairs, which is preferably T-shaped and is supported by a support on a base of the chair, the connection of the support to the seat support being non-positively designed, and the seat support equipped with actuating means triggering its functions is how this seat support is formed by at least two functional parts.
  • the seat support which can have a more or less complex mechanism for various functions, depending on the design of the seating furniture, is often T-shaped and is made up of some functional parts, the main ones of which are a so-called base body and a backrest holder.
  • the backrest holder is connected to the base body in an articulated manner, and the base body itself is connected to the seat surface by connecting means.
  • the support which is preferably non-positively connected to the base body, has a cone on its end facing the base body, which engages non-positively in a conical bush and thereby ensures a firm connection between the support and seat support.
  • actuating means are guided through the seat support, one actuating means of which is the release lever for the release mechanism of the gas spring.
  • the latter is both articulated to the base body and provided with locking means that hold the respective inclination adjustment of the backrest and / or seat surface.
  • a seat support for chairs in particular work swivel chairs, consisting of a base body with end-mounted support for the positive connection with a central support leg of the seat support, a seat plate attachment and a backrest support, and adjusting means for triggering predetermined functions of the Seat support and its parts, wherein the backrest support is U-shaped and is guided with its lower end region to approximately centrally below the seat plate and has a cross bolt which connects the seat plate fastening, which is also U-shaped, at its rear end to the backrest support in an articulated manner , while the front end of the seat plate attachment is articulated to the U-shaped base body by a further cross bolt, the base body running at an acute angle to the seat plate attachment and the base body having a lower que rbolzen, which is movable in a link guide at least one connecting member, which is connected to the backrest support and wherein a clamping means arranged coaxially to the lower transverse bolt of the base body is provided for the non
  • the invention is therefore based on the object of developing a seat support of a known design such that these effects no longer occur on the one hand and the seat support itself forms a closed, low-maintenance unit and an overall slight movement of the functional parts relative to one another when adjusted over a large adjustment range allows.
  • this object is achieved in a seat support of the type mentioned in that the backrest support has a further cross bolt which is arranged below and set back to the first cross bolt and that a spring is attached between the base body and the seat plate fastening, the spring force Push the main body and the seat plate mounting apart.
  • a seat support which advantageously solves the task as well as being simple to construct and manufacture, and which also has a high level of stability.
  • the subdivision of the seat support into individual functional parts also enables an optimization of the function of the inclination adjustment, as a result of which it is accepted by users on the one hand due to its simple handling and the satisfying feeling on the other hand.
  • the U-shaped backrest support for a seat support for work swivel chairs which essentially consists of a base body with end-mounted support, a seat plate attachment and a backrest support and adjusting means for triggering predetermined functions of the seat support is guided with its lower end area to approximately centrally below the seat plate and has an upper cross pin and set back a lower cross pin, of which the upper cross pin the U- shaped seat plate attachment at its rear end in an articulated manner, while its front end is connected in an articulated manner to the U-shaped base body by a further cross bolt which, at an acute angle to the seat plate attachment, has the end of the support for the non-positive connection to the support leg of the seat support and carries a cross bolt, which is movable in an arcuate link guide of essentially triangular slats, which are both connected to the upper cross bolt and by means of a clamping means arranged coaxially to the cross bolt for the positive connection of the slats to the
  • the U-shaped backrest support is articulated to the seat plate fastening with its upper end region and articulated to the U-shaped base body with its lower end region of the vertical webs and, like the seat plate fastening, has a cross bolt on which slats are articulated with link guides that can be moved around a common cross bolt in the base body.
  • the lamellae can be strip-shaped, alternately layered and can be slid over one another with their link guides around the transverse bolt in relative movement.
  • the cross bolt can simultaneously receive the clamping means for the positive connection of the lamellae to one another and to the base body against the force of a helical spring inserted between the base body and the seat plate attachment.
  • the cross bolt can be expediently designed as a sleeve, through which a rod is guided, which receives a threaded nut at one end and a clamping sleeve between the threaded nut and the external lamella, while the opposite end is bent through 180 ° and to Rotation of the rod is inserted into a hole in the base body and in turn carries an adapter sleeve between the outer lamella and the 180 ° bend.
  • a molded part can be placed around the cross bolt, which is used to lock a lever serving for height adjustment.
  • the strip-shaped lamellae according to the invention are simple to manufacture, require very little space on the assembled seat support and are light in weight.
  • the link guides within these strip-shaped slats intersect around the common third cross bolt and allow a relatively large degree of movement due to the long cut guide links.
  • differentiated movements of functional parts are possible with this type of lamella as a connecting link between the functional parts.
  • the movements of the functional parts take place when the clamping device is released solely by the coil springs used.
  • the third cross bolt simultaneously receives the clamping means in the form of a continuous rod which is mounted in sleeves.
  • the seat support 1 is essentially formed by three functional parts, one of which forms the base body 3, another the seat plate fastening 2 and yet another functional part the backrest support 4. Because of their strength, all functional parts are preferably made of U-shaped profiles and connected to one another via articulated connections.
  • the base body 3, which represents the base part of the seat support 1, is provided at its freely projecting end with a conical support 6, in which a cone of a support leg 15 of the seating furniture engages in a force-locking manner.
  • the other end of this base body 3 is articulated to the seat plate attachment 2 by means of the cross bolt 5, and this in turn is articulated to the backrest support 4.
  • the seat support 1 can be adjusted at an inclination so that hardly any shear effect occurs between the parts and thus the backrest also experiences no shear effect against the seat surface.
  • the individual functional parts 2-4 are connected to one another via a connecting member 7, in such a way that the kinematics is possible, and the connecting member 7 is fixed to at least one functional part 2, 4 and is movably guided on a further functional part 3 .
  • the connecting member 7, which can be designed as a triangular plate pack, is fixed with its two end points on the one hand to the backrest support 4 and on the other to the seat plate attachment 2 via bolts 8.
  • the third end point of this plate pack is provided with a link guide 10 and movably guided on a bolt 11 on the base body 3.
  • a movement of the backrest support 4 can take place about its articulation 8 on the seat plate attachment 2, so that when the backrest is inclined Seat plate attachment resting seat 14 of the backrest support 4 goes synchronously.
  • another connecting link 7 could also be provided here.
  • Such a link 7 would be, for example, a cantilever arm according to FIG. 2, which represents the extension of the backrest support 4.
  • This cantilever 12 has the articulation 8 to the seat plate attachment 4 and carries in its extension, i.e. at its free end, the link guide 10, which surrounds the cross bolt 11 of the base body 3.
  • the third articulation point on the backrest support 4 is omitted or an interposed plate pack is used.
  • the symmetrical arrangement is advantageous in that it ensures better guidance of the functional parts 2-4 to one another.
  • a leg spring 17 can be provided between the base body 3 and the seat plate fastening 2.
  • Another leg spring 16 is located between the backrest support 4 and the seat plate attachment 2 for the same reasons.
  • a spring can also effect the frictional connection, this constantly exerting its force on the lamellae 7 and only canceling this force to loosen the same.
  • the seat support 18 essentially consists of a horizontally arranged seat plate attachment 19, a base body 20 articulated thereto by a cross pin 22 and a backrest support 21 which is connected to the seat plate attachment 19 by an upper cross pin 24 and by one lower cross bolt 25 is pivotally connected to the base body 20.
  • the backrest support 21 has elongated vertical webs 34 at its lower end region.
  • the base body 20 extends from the seat plate attachment 19 at an acute angle downwards in the direction of the backrest support 21.
  • the base body 20 has the support 23 at its lower end.
  • the backrest support 21 has in its rearward extension the actual support 33 for the attachment of a backrest, not shown. Backrest support 21 and support 33 can be screwed together in the simplest form.
  • Strip-shaped slats 29 with a link guide 31 are suspended from a cross bolt 26 on the seat plate attachment. Further strip-shaped lamellae 28 with a link guide 30 are fastened around a cross bolt 27 on the backrest support 21. The slats 29 and 28 surround with their link guides 30 and 31 the common bolt 25 and are alternately layered one above the other.
  • the common transverse bolt 25 is in principle formed by a rod 36, which belongs to the clamping means 35 and serves to loosen and also to connect the stacked lamellas.
  • the rod 36 has a thread on its outer end, which carries a threaded nut 37.
  • a clamping sleeve 38 is inserted between the outer lamella 28 and the threaded nut 37.
  • Another clamping sleeve 40 is located on the opposite side between the in turn outer lamella 28 and the 180 ° bend of the rod 36.
  • the end piece of the rod 36 engages after the 180 ° bend to prevent the clamping means 35 from rotating in a corresponding bore 39 in the base body 20 a.
  • a loosening of the threaded nut 37 on the clamping means 35 has the effect that on both sides of the seat support 18 the lamellae 28 and 29 which are stacked around the bolt 25 are loosened at their positive connection.
  • movement of the base body 20 in the direction against the force of the helical compression spring 32 or the seat plate fastening 19 in the direction of the base body 20 is possible.
  • lowering the backrest support 21 together with the support 33 from the position shown in FIG. 5 downwards is possible.
  • the backrest assumes a position and holder desired by the person.
  • the lever 41 which is also provided in the base body through corresponding bores 42, serves to adjust the height of the seat support 18 with a corresponding effect on the support leg.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
  • Seats For Vehicles (AREA)
  • Sliding-Contact Bearings (AREA)
EP19850905388 1984-10-25 1985-10-24 Sitzträger für stühle, insbesondere arbeitsdrehstühle Expired - Lifetime EP0198056B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85905388T ATE59760T1 (de) 1984-10-25 1985-10-24 Sitztraeger fuer stuehle, insbesondere arbeitsdrehstuehle.

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3439072 1984-10-25
DE3439072 1984-10-25
DE3501910A DE3501910C2 (de) 1984-10-25 1985-01-22 Sitzträger für Stühle, insbesondere Arbeitsdrehstühle
DE3501910 1985-01-22
DE19853515916 DE3515916A1 (de) 1985-05-03 1985-05-03 Sitztraeger fuer stuehle, insbesondere arbeitsdrehstuehle
DE3515916 1985-05-03

Publications (2)

Publication Number Publication Date
EP0198056A1 EP0198056A1 (de) 1986-10-22
EP0198056B1 true EP0198056B1 (de) 1991-01-09

Family

ID=27192451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850905388 Expired - Lifetime EP0198056B1 (de) 1984-10-25 1985-10-24 Sitzträger für stühle, insbesondere arbeitsdrehstühle

Country Status (7)

Country Link
EP (1) EP0198056B1 (da)
AU (1) AU5061385A (da)
DK (1) DK166798B1 (da)
ES (2) ES296394Y (da)
FI (1) FI83023C (da)
NO (1) NO167955C (da)
WO (1) WO1986002536A1 (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5280998A (en) * 1991-03-01 1994-01-25 Miotto & Associates International Limited S.R.L. Mechanical device, particularly for the movement and selective locking of a chair
US5348371A (en) * 1989-12-14 1994-09-20 Shepherd Products U.S., Inc. Mechanical device for use particularly for the synchronous movement of the seat and backrest of a chair
DE29717571U1 (de) * 1997-10-02 1997-12-18 SIFA Sitzfabrik GmbH, 92237 Sulzbach-Rosenberg Sitzträger für Stühle

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1225145B (it) * 1988-09-09 1990-11-02 Cofemo Spa Sedia con sedile e schienale ad inclinazione variabile sincronizzata
FR2674414B1 (fr) * 1991-03-26 1995-05-05 Lingranotto Ets Siege a dossier et assise synchronises.
DE9109184U1 (de) * 1991-07-25 1991-10-10 SIFA Sitzfabrik GmbH, 8458 Sulzbach-Rosenberg Sitzträger für Stühle
ES2060487B1 (es) * 1991-11-27 1996-11-16 Ind Y Fundiciones Iglesias S A Mejoras introducidas en los dispositivos reguladores de la inclinacion de respaldos de asientos de oficina y similares.
US5560682A (en) * 1992-12-01 1996-10-01 Klasse Pty Ltd Adjustment mechanism for a chair
DE4324545C2 (de) * 1993-07-22 2003-10-16 Dauphin Friedrich W Gmbh Stuhl, insbesondere Bürostuhl
DE19639741C2 (de) * 1996-09-06 1998-07-09 Thomas Jungjohann Sitzmöbelelement, insbesondere Polstermöbelelement, mit einer gekoppelten Rückenlehnen- und Sitzverstellung
DE29812598U1 (de) * 1998-07-15 1998-10-22 SIFA Sitzfabrik GmbH, 92237 Sulzbach-Rosenberg Klemmung für Sitzträger von Stühlen
DE20100436U1 (de) 2001-01-11 2001-04-05 SIFA Sitzfabrik GmbH, 92237 Sulzbach-Rosenberg Sitzträger
KR100418735B1 (ko) * 2001-08-31 2004-02-18 미래종합상사(주) 의자의 등받이 구동 장치
DE20319458U1 (de) 2002-12-20 2004-04-22 Metalseat S.R.L., Galliera Veneta Bürosessel mit technischer Armlehne, der mit eingebauten Steuertasten zur Einstellung der Bewegung des Sitzes und der Rückenlehne versehen ist
DE20319455U1 (de) 2002-12-31 2004-04-22 Metalseat S.R.L., Galliera Veneta Vorrichtung zur Einstellung der Federdruckkraft in einem Gelenk für Sitze
TW200950726A (en) * 2008-06-06 2009-12-16 Fon Chin Ind Co Ltd Front-and-back reciprocating, reclining, lifting and lowering apparatus for a chair back
CA2808205C (en) * 2010-08-25 2015-10-13 L&P Property Management Company Tilt mechanism for a chair and chair
CN107788732A (zh) 2016-09-01 2018-03-13 永艺家具股份有限公司 一种座椅结构及座椅
ES2800425T3 (es) * 2018-04-17 2020-12-30 L&P Property Man Co Mecanismo de inclinación de una silla y silla
IT201900002723A1 (it) 2019-02-26 2020-08-26 Brado S P A Sedia

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7239551U (de) * 1972-10-27 1973-09-13 Neumueller K U S Metallwaren Ohg Sitzmöbel, insbesondere Bürostuhl
DE8326792U1 (de) * 1983-09-17 1984-01-05 Fromme, Heinrich, 4815 Schloß Holte-Stukenbrock Stuhl, insbesondere drehstuhl
DE8417429U1 (de) * 1984-06-08 1984-09-20 Hansen, Eckard, 9430 St. Margrethen Punktsynchronverstelleinrichtung für Bürostühle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5348371A (en) * 1989-12-14 1994-09-20 Shepherd Products U.S., Inc. Mechanical device for use particularly for the synchronous movement of the seat and backrest of a chair
US5280998A (en) * 1991-03-01 1994-01-25 Miotto & Associates International Limited S.R.L. Mechanical device, particularly for the movement and selective locking of a chair
DE29717571U1 (de) * 1997-10-02 1997-12-18 SIFA Sitzfabrik GmbH, 92237 Sulzbach-Rosenberg Sitzträger für Stühle
WO1999017637A1 (de) 1997-10-02 1999-04-15 Sifa Sitzfabrik Gmbh Sitzträger für stühle
US6131996A (en) * 1997-10-02 2000-10-17 Sifa Sitzfabrik Gmbh Seat carrier for chairs

Also Published As

Publication number Publication date
DK299586D0 (da) 1986-06-25
FI862713A (fi) 1986-06-25
AU5061385A (en) 1986-05-15
ES296394U (es) 1987-10-16
FI83023C (fi) 1991-05-27
NO862575D0 (no) 1986-06-25
WO1986002536A1 (en) 1986-05-09
NO167955B (no) 1991-09-23
NO862575L (no) 1986-08-20
FI862713A0 (fi) 1986-06-25
ES296394Y (es) 1988-04-16
FI83023B (fi) 1991-02-15
NO167955C (no) 1992-01-02
ES296172Y (es) 1988-04-16
DK299586A (da) 1986-08-21
ES296172U (es) 1987-09-16
EP0198056A1 (de) 1986-10-22
DK166798B1 (da) 1993-07-19

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