EP0537542B1 - Vorrichtung zur Gewichtseinstellung für die Einstellung von Sitzflächen und Rückenlehnen bei Stühlen, insbesondere Bürodrehstühlen - Google Patents

Vorrichtung zur Gewichtseinstellung für die Einstellung von Sitzflächen und Rückenlehnen bei Stühlen, insbesondere Bürodrehstühlen Download PDF

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Publication number
EP0537542B1
EP0537542B1 EP92116616A EP92116616A EP0537542B1 EP 0537542 B1 EP0537542 B1 EP 0537542B1 EP 92116616 A EP92116616 A EP 92116616A EP 92116616 A EP92116616 A EP 92116616A EP 0537542 B1 EP0537542 B1 EP 0537542B1
Authority
EP
European Patent Office
Prior art keywords
spring element
bracket
adjusting device
seat
base part
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
EP92116616A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0537542A1 (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
Sifa Sitzfabrik GmbH
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 Sifa Sitzfabrik GmbH filed Critical Sifa Sitzfabrik GmbH
Publication of EP0537542A1 publication Critical patent/EP0537542A1/de
Application granted granted Critical
Publication of EP0537542B1 publication Critical patent/EP0537542B1/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
    • A47C1/03255—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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • A47C1/03274—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs of torsion type
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs

Definitions

  • the invention relates to a device for adjusting the weight for the adjustment of seats and backrests in chairs, in particular office swivel chairs according to the preamble of claim 1.
  • Office swivel chairs in which between a sloping downward base part, which has a receptacle for a support foot at its rear, lower end, and a seat support which is pivotally connected to this base part at its front end and which is movably or rigidly connected to a backrest support , or possibly integrally formed therewith, one or more spring elements are arranged, which push the base part and the seat support apart, and means such as Gas springs, clamping screws or a combination of a clamping device with plate packs for determining the inclination between the base part and seat support are provided, and in which a device for weight adjustment is further arranged between the base part and the seat support and this device for weight adjustment consists of an adjustable spring element.
  • Such office swivel chairs can, as described, simply consist of essentially two functional parts, a seat support which is rigidly connected to a backrest support, or is formed in one piece with this and form a base part, or else
  • the inclination of the seat and backrest is adjusted as a function of one another, the adjustment of the seat surfaces and backrests being achieved essentially by three interacting functional parts
  • the first functional part is an obliquely arranged base part, which receives the footrest at its lower, rear end, the base part being pivotally connected at its upper, front end to the front end of the second functional part
  • a seat support the seat support in a behind the connection with the Base part lying area is pivotally connected to the third functional part
  • a backrest support the base part and the backrest support being connected to one another via a link guide, the link guide being arranged such that the inclination of the backrest support depends Depending on the inclination
  • the object of the invention is therefore to provide a device for weight adjustment for the adjustment of seats and backrests in chairs, in particular office swivel chairs, which has a wide and in particular tactile adjustment range.
  • the spring element is supported on one side on the seat support and on the other side on an adjusting device.
  • the adjusting device in turn is supported on one side on the base part and has means for adjusting the spring travel of the spring element on its other front side.
  • the means for adjusting the spring travel can be nuts or other adjusting means which run on a thread in the front area of the adjusting device, but also, for example, eccentric disks which are in the front area of the Adjustment device are arranged.
  • the spring element consists of two leg springs which are connected to one another by a bracket, the free legs being supported on the seat support, and the bracket being displaceable in one on the adjusting device by actuating the nut or the rotary knob Holding part is held.
  • the spring element can be preceded by a second, weaker spring element, the inclination being adjusted against the force of the second, weaker spring element in a first position and the inclination against the force of the stronger spring element being adjusted in a second position of the adjusting device.
  • the second, weaker spring is arranged between the holding part and the nut, or the rotary knob of the adjusting device.
  • the adjustment device advantageously has a rear and / or front stop to limit the adjustment path.
  • a special embodiment of the invention is a device for weight adjustment for the adjustment of seats and backrests in chairs, in particular office swivel chairs, the chairs having a seat support, consisting of a U-shaped base part, the legs of which point upwards and one at one end Receptacle for a central support leg, a T-shaped seat support with downward-facing side tabs, the seat support at its front end, which is closest to the crossbar of the T, with the base part at its end opposite the reception by one in the legs of the base part and the rag of the Seat axis support mounted first axis is pivotally connected, and wherein the base part of the connection with the seat surface support runs obliquely downwards, consisting further of a U-shaped backrest support, the legs of which point downward, and which with the seat support at its rear end by one , in the lobes of the seat support and in a central region of the legs of the backrest support, the second axis is pivotally connected, with a further, third axis in suitable
  • the seat support shown here consists of a U-shaped base part 1, the legs 15 of which point upwards and which has at one end a receptacle 2 for a central support leg, a T-shaped seat support 3 with downward-facing side tabs 14, the Seat support 3 at its front end, which is the first end of the crossbar 13 of the T, is connected to the base part 1 at its end opposite the receptacle 2 so as to be pivotable about a first axis 21 mounted in the legs 15 of the base part 1 and the tabs 14 of the seat support 3.
  • the base part 1 runs obliquely downwards from the connection with the seat support 3.
  • a U-shaped backrest support 4 the legs 16 of which point downward, is pivotally connected to the seat support 3 at its rear end about a second axis 17 mounted in the tab 14 of the seat support 3 and in a central region of the legs 16 of the backrest support 4.
  • a further, third axis 18 is in suitable bores in the legs 15 of the base part 1 approximately in the middle between the connection with the seat support 3 and the receptacle 2 for the support leg, as well as in obliquely obliquely downward, not recognizable, oblong holes the front end of the backrest support 4 stored.
  • the tabs 14 of the seat support 3 at least partially encompass the legs 16 of the backrest support 4 and the legs 16 of the backrest support 4 at least partially encompass the legs 15 of the base part 1.
  • one or more spring elements which push them apart are arranged.
  • two intermeshing plate packs 19 are arranged, the one plate packs having at one end towards the elongated holes of the backrest support, elongated holes in which the third axis 18 is guided and on their the other end are rotatably mounted on bolts in the legs 16 of the backrest support 4 and the other plate packs have elongated holes at one end towards the elongated holes of the backrest support 4 in which the third axis 18 is guided and at their other end rotatable on bolts in the tabs 14 of the seat support 3 are mounted.
  • Coaxial to Third axis 18 clamping means are provided for the non-positive connection of the plate packs 19 with the backrest support 4 and the base part 1.
  • a device for adjusting the weight is arranged between the base part 1 and the seat support 3 and this device for adjusting the weight consists of an adjustable spring element 6, the spring element 6 being on one side on the seat support 3 and on the other side on an adjusting device 7 supports, wherein the adjusting device 7 is a rod 20, which is supported on one side on the base part 1 and on its other side has a thread on which a nut or a rotary knob 8 runs to adjust the spring travel of the spring element 6.
  • the spring element 6 consists of two leg springs 9 which are connected to one another by a bracket.
  • the free legs are supported on the seat support 3, the bracket being held in a holding part 10 which can be displaced on the adjusting device 7 by actuating the nut or the rotary knob 8.
  • the spring element 6 is preceded by a second, weaker spring element 11, with the adjustment of the inclination against the force of the second, weaker spring element 11 in a first position of the adjusting device 7 and the adjustment of the inclination against the force of the in a second position of the adjusting device 7 stronger spring element 6 happens.
  • the second, weaker spring 11 is arranged between the holding part 10 and the nut, or the rotary knob 8 of the adjusting device 7.
  • a sleeve 12 can be arranged on the rod 20 as a rear stop for the holding part 10 or the adjusting device 7.
  • the holding part 10 is advantageously designed so that it extends laterally over a larger area of the bracket of the spring element 6.
  • the holding part 10 can also accommodate a part of the second, weaker spring element 11 drill a hole.
  • the second, weaker spring element can be received entirely in a bore of the rotary knob 8.
  • the device for weight adjustment for the adjustment of seats and backrests in chairs in particular office swivel chairs, is set for a particularly light person. I.e. when pushing back the backrest connected to the backrest support 4, only the second, weaker spring element is compressed. If the device is to be adjusted to a heavier person, the rotary knob 8 on the thread of the rod 20 is adjusted in the direction of the stronger spring element 6 and this spring element 6 is set to the desired pretension.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Removal Of Floating Material (AREA)
  • Fats And Perfumes (AREA)
  • Supports For Pipes And Cables (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP92116616A 1991-10-16 1992-09-29 Vorrichtung zur Gewichtseinstellung für die Einstellung von Sitzflächen und Rückenlehnen bei Stühlen, insbesondere Bürodrehstühlen Expired - Lifetime EP0537542B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9112861U DE9112861U1 (de) 1991-10-16 1991-10-16 Vorrichtung zur Gewichtseinstellung für die Einstellung von Sitzflächen und Rückenlehnen bei Stühlen, insbesondere Bürodrehstühlen
DE9112861U 1991-10-16

Publications (2)

Publication Number Publication Date
EP0537542A1 EP0537542A1 (de) 1993-04-21
EP0537542B1 true EP0537542B1 (de) 1996-01-31

Family

ID=6872298

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116616A Expired - Lifetime EP0537542B1 (de) 1991-10-16 1992-09-29 Vorrichtung zur Gewichtseinstellung für die Einstellung von Sitzflächen und Rückenlehnen bei Stühlen, insbesondere Bürodrehstühlen

Country Status (9)

Country Link
US (1) US5340194A (da)
EP (1) EP0537542B1 (da)
AT (1) ATE133543T1 (da)
AU (1) AU658229B2 (da)
CA (1) CA2080720A1 (da)
DE (2) DE9112861U1 (da)
ES (1) ES2082313T3 (da)
FI (1) FI924617A (da)
MY (1) MY129980A (da)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2714340B1 (fr) * 1993-12-28 1996-03-01 Bfa Perfectionnements aux armatures réglables de siège et aux sièges équipés de telles armatures.
US5676425A (en) * 1996-03-19 1997-10-14 R.A.M. Machines (1990) Ltd. Releasable lock forchair control mechanism
US5836555A (en) * 1996-06-07 1998-11-17 Safco Products Company Industrial chair
USD381823S (en) * 1996-06-07 1997-08-05 Safco Products Company Industrial chair
US7036881B1 (en) * 2000-07-07 2006-05-02 Leggett & Platt Ltd. Chair seat tilt mechanism
US6447063B1 (en) * 2000-07-07 2002-09-10 Leggett & Platt Ltd. Chair seat tilt mechanism
US6598936B1 (en) 2001-04-11 2003-07-29 Michael N. Klein Multi-task mid-pivot chair control mechanism
US6644743B1 (en) * 2003-03-04 2003-11-11 Chang-Chen Lin Chair chassis
US7066538B2 (en) * 2003-12-30 2006-06-27 Hni Technologies, Inc. Chair with tilt lock mechanism
KR200357428Y1 (ko) * 2004-04-22 2004-07-27 박자룡 귀 진단치료용 유니트
WO2007124508A1 (en) * 2006-04-24 2007-11-01 Crown Equipment Corporation Materials handling vehicles having seats with pivoting backrests
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
WO2012025134A1 (en) 2010-08-25 2012-03-01 L&P Swiss Holding Ag Tilt mechanism for a chair and chair
EP2772156B1 (en) 2013-02-27 2020-04-29 L&P Property Management Company Tilt mechanism for a chair and chair
EP3556252B1 (en) * 2018-04-17 2020-05-13 L&P Property Management Company Tilt mechanism for a chair and chair

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1909018A (en) * 1931-04-20 1933-05-16 Sikes Company Chair
US2341124A (en) * 1942-05-22 1944-02-08 Collier Keyworth Company Chair iron
US3072436A (en) * 1960-04-14 1963-01-08 Moore Edwin Rosco Tilting devices for chair seats and chair backs
CH645795A5 (en) * 1979-07-23 1984-10-31 Drabert Soehne Chair, in particular visual display unit chair
DE3322450A1 (de) * 1983-06-22 1985-01-10 August Fröscher GmbH & Co KG, 7141 Steinheim Vorrichtung zum verstellen des sitzes und der rueckenlehne von stuehlen
DE3500932A1 (de) * 1984-01-14 1985-08-29 Völkle Bürostühle GmbH, 7298 Loßburg Sitzmoebel
EP0208695B1 (de) * 1985-01-12 1989-08-02 Rolf Völkle Sitzmöbel mit feder für die sitzschale
DE3629882A1 (de) * 1986-09-02 1988-03-10 Girsberger Holding Ag Sicherheitsverriegelung
AT386517B (de) * 1987-02-10 1988-09-12 Zuend & Co Ag K Stuhl, insbesondere arbeitsstuhl
IT1210753B (it) * 1987-05-20 1989-09-20 Pro Cord Srl Sopporto oscillante per sedie sedili e simili
US4966411A (en) * 1987-10-24 1990-10-30 Kokuyo Co., Ltd. Chair provided with a backrest
US5224758A (en) * 1989-12-27 1993-07-06 Itoki Crebio Corporation Tilting control assembly for chair
DE9109184U1 (de) * 1991-07-25 1991-10-10 SIFA Sitzfabrik GmbH, 8458 Sulzbach-Rosenberg Sitzträger für Stühle

Also Published As

Publication number Publication date
ATE133543T1 (de) 1996-02-15
DE59205227D1 (de) 1996-03-14
DE9112861U1 (de) 1992-01-02
FI924617A (fi) 1993-04-17
CA2080720A1 (en) 1993-04-17
US5340194A (en) 1994-08-23
AU2703192A (en) 1993-04-22
FI924617A0 (fi) 1992-10-13
MY129980A (en) 2007-05-31
ES2082313T3 (es) 1996-03-16
AU658229B2 (en) 1995-04-06
EP0537542A1 (de) 1993-04-21

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