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EP0584620B1 - Stuhl - Google Patents

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Publication number
EP0584620B1
EP0584620B1 EP93112711A EP93112711A EP0584620B1 EP 0584620 B1 EP0584620 B1 EP 0584620B1 EP 93112711 A EP93112711 A EP 93112711A EP 93112711 A EP93112711 A EP 93112711A EP 0584620 B1 EP0584620 B1 EP 0584620B1
Authority
EP
European Patent Office
Prior art keywords
seat support
seat
support element
chair
clamping
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
EP93112711A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0584620A1 (de
Inventor
Friedrich Wilhelm Dauphin
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.)
Dauphin Entwicklungs und Beteiligungs GmbH
Original Assignee
Friedrich W Dauphin GmbH and Co
Dauphin Entwicklungs und Beteiligungs 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 Friedrich W Dauphin GmbH and Co, Dauphin Entwicklungs und Beteiligungs GmbH filed Critical Friedrich W Dauphin GmbH and Co
Publication of EP0584620A1 publication Critical patent/EP0584620A1/de
Application granted granted Critical
Publication of EP0584620B1 publication Critical patent/EP0584620B1/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
    • A47C1/03283—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with fluid springs
    • 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

Definitions

  • the invention relates to a chair, in particular an office chair according to the preamble of patent claim 1.
  • Such chairs are known from DE-PS 27 33 322 (corresponding to US-PS 4,200,332). Due to the mutual assignment of the seat support parts, the articulated seat, the backrest fastened to the rear seat support part and the gas spring inserted between the seat support parts, such chairs have a so-called synchronous mechanism, in which a pivoting of the seat is accompanied by a pivoting of the seat.
  • the seat adapts ergonomically to the swivel position of the backrest in its inclined position in such a way that when the backrest is pivoted by e.g. 10 ° to the rear, the seat with its rear area tilts down by about 5 ° around its front edge.
  • the angle of inclination of the seat and the backrest which are jointly adjustable due to the synchronous mechanism, are fixed in these known chairs.
  • the object of the invention is to further develop a chair of the generic type in such a way that the seat together with the backrest can also be adjusted in its inclination independently of the given inclination adjustment due to the synchronous mechanism and can be ascertained in different inclined positions, so that the synchronous mechanism to be able to change the given angle of inclination of the seat and backrest within an adjustment range.
  • one of the seat support parts not directly and rigidly attached to the chair column, but connected to it via an additional joint.
  • a locking of the seat is additionally provided with the aid of a locking device which is effective between the seat support and the bearing part. This enables a continuous inclination adjustment of the seat support part articulated on the chair column.
  • Claim 2 characterizes an advantageous development of the receptacle on the seat carrier, which enables a structurally favorable attachment of the joint axis to the receptacle.
  • the locking device is designed as a disk pack locking device.
  • Such disk pack locking devices are basically from the prior art - e.g. known from EP 0 394 784 or DE 30 30 009 C2 - for releasably locking two parts of seat support structures which can be pivoted relative to one another.
  • the locking device is spaced particularly far from the hinge axis, so that the locking acts with a large lever arm with respect to the hinge axis. With a given clamping force of the disk pack locking device, the locking effect is thus optimized.
  • the claims 5 to 7 characterize advantageous configurations of the disk pack locking device, which are characterized by structural simplicity, compactness and simple operability.
  • claims 9 and 10 teach an advantageous embodiment of the actuating mechanism of the disk pack locking device.
  • the locking device is released by simply pivoting an actuating lever, which is particularly user-friendly.
  • An office chair shown in Fig. 1 has a base frame 1, which is supported by rollers 2 against the floor. Attached to the base frame 1 is a height-adjustable chair column 3, covered by a bellows 3a, at the upper end of which a seat support 4 is detachably fastened, on which in turn a padded seat 5 is attached. Attached to the seat support 4 is an essentially upward-extending backrest support 6, to the upper end of which a backrest 7 is attached. The height of the chair column 3 is adjusted by means of an operating lever 8. To change the inclination of the backrest 7 with the backrest support 6 while simultaneously changing the inclination of the seat 5, a further actuating lever 9 is mounted on the seat support 4. The seat support 4 can be partially or largely covered by a panel 10 attached to the underside of the seat 5. In Fig. 1 it can be seen that the backrest support 6 is covered by a bellows 11 for optical reasons.
  • the basic structure of the office chair described is generally known.
  • the height-adjustable chair column 3 is known for example from DE-PS 19 31 012 (corresponding to US Pat. No. 3,711,054) or DE-PS 18 12 282 (corresponding to US Pat. No. 3,656,593).
  • the structure of the seat support 4 including the described pivoting possibilities of the backrest 7 and seat 5 is known for example from EP-PS 0 179 185 (corresponding to ZA-PS 85/6126).
  • the seat support 4 is of split design. It consists of a front seat support part 12 and a rear seat support part 13, which have an essentially U-shaped cross section that is open at the bottom. It follows that they each have two side walls 14, 15 and 16, 17, which are each connected to one another by floors 5 facing floors 18 and 19.
  • the two seat support parts 12, 13 are connected to one another by a pivot axis 20 arranged adjacent to their bottoms 18, 19.
  • a seat holder 21 is attached so as to be pivotable about a pivot axis 22, the seat holder 21 being supported by a transverse to the main plane of symmetry of the chair, i. 2 is formed transverse to the plane of the drawing.
  • the seat 5 is supported on this seat holder 21 via spacers 23.
  • the seat 5 is further supported and fastened on the floor 19 of the rear seat support part 13 by means of elastic buffers 26.
  • a length-adjustable energy store in the form of a length-adjustable gas spring 27 is articulated about a pivot axis 28 which runs parallel to the pivot axes 20 and 22.
  • This pivot axis 28 faces the housing 29 of the gas spring 27, from the other end of which a piston rod 30 is led out.
  • An actuating pin 31 protrudes from the piston rod 30, by means of which a valve located in the gas spring can be actuated for length adjustment.
  • the piston rod 30 is connected by a thread to an actuating device 32, to which the actuating lever 9 belongs.
  • This actuating device is pivotably mounted between the side walls 14, 15 of the front seat support part 12 parallel to the pivot axes 20, 22, 28.
  • the operating lever 9 is led out through an elongated hole 33 in the associated side wall 16 of the rear seat support part 13, this elongated hole being curved such that its center coincides with the pivot axis.
  • the actuating pin 31 is not only briefly inserted into the piston rod 30 of the gas spring 27 to achieve a change in length of the gas spring 27 and thus a change in the position of the seat 5 and the backrest 7, but when the actuating pin 31 for a longer time in the Piston rod 30 is inserted, then the seat 5 can be rocked together with the backrest 7.
  • the structure of the seat support 4 with the seat 5 is - insofar as it has been described so far - known from EP-OS 0 179 185 (corresponding to ZA-PS 85/6126). Structure and arrangement of the actuating device 32 and the gas spring 27 is known from EP-OS 0 179 216.
  • a spring abutment 34 is pivotally mounted about the pivot axis 20 of the front and rear seat support part 12 or 13, which is designed in cross section like an angle lever.
  • One abutment lever 35 extends rearward from the pivot axis 20, i.e. in the direction of the backrest support 6, specifically below the floor 19 of the rear seat support part 13.
  • an adjusting screw 36 is arranged by means of its external thread 37 in an internal thread 38 on the lever 35.
  • the threads 37, 38 are self-locking.
  • the free end of the set screw 36 is supported against the bottom 19 of the rear seat support part 13.
  • a spring 40 which is formed by a block of elastic material, for example a neoprene foam.
  • This spring rests with its other end against a stationary but pivotable abutment 41, which is formed by a rear wall opposite the lever 39 of the bearing part 46, which will be explained in more detail below.
  • the spring 40 is on a pin-like Protrusion 42 of the lever 39 attached so that it can not fall down from the area between the lever 39 and the abutment 41.
  • Neoprene is the common, non-trademarked name for chloropren, a chlorinated hydrocarbon.
  • the abutment lever 39 is in its position closest to the abutment 41, i.e. the spring 40 is most biased.
  • the abutment 41 is - which is repeated here - arranged in the front seat support part 12.
  • the spring 40 comes in each case with correspondingly different pivoting positions of the rear seat support part 13 relative to the front seat support part 12, that is to say at different positions Backward inclinations of the backrest 7 and thus also the seat 5 for engagement.
  • the block-like spring 40 first comes into contact with the abutment 41 in these intermediate positions only with an edge 44 and only gradually comes to rest against the abutment 41 with a further pivoting movement.
  • a certain progression in the spring action is achieved.
  • the levers 35, 39 are stiffened with one or more intermediate webs 24. So that the set screw 36 is not accidentally unscrewed from the internal thread 38, its external thread is squeezed in the area of the end 43 in the usual way.
  • the set screw 36 is provided with a rotary handle 25 at its end which projects downward from the seat support 4.
  • the set screw 36 is offset from the gas spring 27.
  • the gas springs 27 are customary on the market and generally known in terms of structure and mode of operation, for example that from DE-PS 18 12 282 (corresponding to US Pat. No. 3,656,593).
  • the front seat support part 12 is connected in an articulated manner to the upper end of the chair column 3, which is designed as a bearing cone 45, via a bearing part designated as a whole as 46.
  • the bearing part 46 is seated with an inner-conical bearing block 47 on the bearing cone 45 of the chair column 3.
  • the bearing block 47 is fastened in a longitudinally oriented rectangular tube 48 which, on its side located behind the bearing block 47, has an articulated axis 49 running parallel to the center of gravity 20 in the form of a simple screw with mother wears.
  • the front seat support part 12 is articulated on this hinge axis 49.
  • the front seat support part 12 is provided with a plate pack locking device which is effective between it and the bearing part 46 and is arranged in front of the bearing block 47. It has a plate pack 50 fastened to the bearing part 46, consisting of plates 52 arranged parallel to one another with the interposition of frictional engagement elements 51.
  • the latter are in side view (dashed lines in Fig. 2) formed approximately triangular and sit with their downward-facing corner area on an axis 53 on the bearing part 46, which is held between the two side walls 54, 55 of the U-shaped profile part 56 which is open towards the front.
  • the elongated oval-shaped frictional engagement elements 51 in side view are fixed in the disk pack 50 by a further retaining bolt 57, which loosely holds the frictional engagement elements 51 and the disks 52 together.
  • the disk pack locking device furthermore has a releasable clamping device 58, which essentially consists of a clamping bolt 59, a helical compression spring 60 and an actuating lever 61.
  • the clamping bolt 59 is arranged parallel to the swivel 20 or articulated axis 49 and passes through the plate pack 50 and the two side cheeks 54, 55 of the bearing part 46 via the elongated holes 62 shown in dashed lines in FIG. 2 so that there is play when the front seat support part is tilted 12, on which the clamping bolt 59 is guided so as to be longitudinally axially displaceable in the clamping direction K, movement of the clamping bolt 59 relative to the slats 52 is possible.
  • the clamping bolt 59 has a thread 64 with a nut 65 seated thereon, which serves as a stop for the loading sleeve 66 placed on the clamping bolt 59, which is provided with a flange 67 at its end facing the slats 52.
  • an abutment sleeve 68 is further arranged on the clamping bolt 59, which has an abutment flange 69 at its slat-side end. At its opposite end, the abutment sleeve 68 is supported on the side wall 15. With its second end 70, the tensioning bolt 59 is guided out of the front seat support part 12 via a bore 71 in the side wall 15 and ends within a guide tube 72 designed as a square tube, which is attached coaxially with the tensioning bolt 59 on the outside of the side wall 15 (FIG 4).
  • the lead-out end 70 of the clamping bolt 59 is provided with an approximately cuboid actuating head 73, which is formed from an inner hexagon 74 with a circumferential groove 75 and a support 76 molded thereon.
  • the helical compression spring 60 is inserted, which acts on the clamping bolt 59 in the clamping direction K.
  • the actuating lever 61 On the outside in front of the actuating head 73 of the clamping bolt 59, the actuating lever 61 is mounted on the free end of the guide tube 72 so as to be pivotable about a pivot axis 78 running at right angles to the clamping direction K. It is in contact with the actuating head 73 via a cam-like pivot bearing part 79.
  • the latter has stop surfaces 80, 81 arranged within the guide tube 72 for limiting the swivel angle, which in each case form obtuse-angled wedge surfaces on the sides of the swivel bearing part 79 facing away from one another to limit the swivel angle V of the actuating lever 61.
  • the cam region 82 of the pivot bearing part 79 On the side of the pivot bearing part 79 facing the actuating head 73, the cam region 82 of the pivot bearing part 79, which is formed from a flat and convexly curved part, is provided between the stop surfaces 80, 81.
  • Fig. 3 shows the disk pack locking device in the locked state.
  • the clamping bolt 59 clamps the plate assembly 50 relative to the abutment sleeve 68 via the loading sleeve 66, so that a movement of the clamping bolt 59 and thus the front seat support part 12 connected to it relative to the plate assembly 50 and thus again with respect to the this connected bearing part 46 is not possible.
  • the seat 5 is thus locked in the tilt position shown.
  • the actuating lever 61 is pivoted counterclockwise with respect to FIG. 3, whereby the eccentric, convexly curved cam region 82 of the pivot bearing part 79 of the clamping bolt 59 is displaced counter to the clamping direction K and counter to the action of the helical compression spring 60.
  • This releases the clamping handle around the plate pack 50 as a result of which the clamping bolt 59 and thus the entire seat support 4 together with the backrest support 6 relative to the plate pack 50 and to the bearing part 46 within the limits determined by the elongated holes 62 can be moved, which leads to a common inclination adjustment of the seat 5 and the backrest 7 by the same angular amount.
  • the disk pack locking device is brought back into its locked state.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Special Chairs (AREA)
EP93112711A 1992-08-21 1993-08-09 Stuhl Expired - Lifetime EP0584620B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9211244U DE9211244U1 (de) 1992-08-21 1992-08-21 Stuhl
DE9211244U 1992-08-21

Publications (2)

Publication Number Publication Date
EP0584620A1 EP0584620A1 (de) 1994-03-02
EP0584620B1 true EP0584620B1 (de) 1996-06-12

Family

ID=6882908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93112711A Expired - Lifetime EP0584620B1 (de) 1992-08-21 1993-08-09 Stuhl

Country Status (13)

Country Link
US (1) US5447357A (cs)
EP (1) EP0584620B1 (cs)
AT (1) ATE139091T1 (cs)
AU (1) AU661570B2 (cs)
CA (1) CA2101904A1 (cs)
CZ (1) CZ282391B6 (cs)
DE (2) DE9211244U1 (cs)
DK (1) DK0584620T3 (cs)
EC (1) ECSP930973A (cs)
ES (1) ES2089656T3 (cs)
HK (1) HK182196A (cs)
MX (1) MX9305062A (cs)
ZA (1) ZA932851B (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009038319A1 (de) * 2009-08-21 2011-02-24 Dauphin Entwicklungs- U. Beteiligungs-Gmbh Stuhl
CN112828764A (zh) * 2020-12-29 2021-05-25 无锡鹰贝精密液压有限公司 阀套绗磨浮动自定心夹具

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US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
USD852526S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD846294S1 (en) 2017-05-25 2019-04-23 Steelcase Inc. Seating arrangement
USD852524S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD851417S1 (en) 2017-05-25 2019-06-18 Steelcase Inc. Seating arrangement
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USD852525S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD851418S1 (en) 2017-05-25 2019-06-18 Steelcase Inc. Seating arrangement
CN113507865A (zh) 2019-02-21 2021-10-15 斯特尔凯斯公司 身体支撑组件和用于该身体支撑组件的使用和组装的方法
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USD907383S1 (en) 2019-05-31 2021-01-12 Steelcase Inc. Chair with upholstered back
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
CN113796688A (zh) * 2021-09-30 2021-12-17 中山市东立家具配件有限公司 一种办公椅无级锁定底盘
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IT202200009566A1 (it) * 2022-05-10 2023-11-10 Brado S P A Dispositivo di regolazione per una sedia con meccanismo oscillante

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009038319A1 (de) * 2009-08-21 2011-02-24 Dauphin Entwicklungs- U. Beteiligungs-Gmbh Stuhl
DE102009038319B4 (de) * 2009-08-21 2011-07-28 Dauphin Entwicklungs- u. Beteiligungs-GmbH, 91217 Stuhl
CN112828764A (zh) * 2020-12-29 2021-05-25 无锡鹰贝精密液压有限公司 阀套绗磨浮动自定心夹具

Also Published As

Publication number Publication date
ES2089656T3 (es) 1996-10-01
MX9305062A (es) 1994-02-28
ATE139091T1 (de) 1996-06-15
AU661570B2 (en) 1995-07-27
HK182196A (en) 1996-10-11
EP0584620A1 (de) 1994-03-02
ECSP930973A (es) 1994-03-29
US5447357A (en) 1995-09-05
DE9211244U1 (de) 1992-10-29
CA2101904A1 (en) 1994-02-22
DE59302893D1 (de) 1996-07-18
ZA932851B (en) 1993-11-23
DK0584620T3 (da) 1996-10-21
CZ282391B6 (cs) 1997-07-16
CZ161393A3 (en) 1994-03-16
AU3709193A (en) 1994-02-24

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