EP0786952B1 - Sitzträger für bürostühle oder dergleichen - Google Patents

Sitzträger für bürostühle oder dergleichen Download PDF

Info

Publication number
EP0786952B1
EP0786952B1 EP95934052A EP95934052A EP0786952B1 EP 0786952 B1 EP0786952 B1 EP 0786952B1 EP 95934052 A EP95934052 A EP 95934052A EP 95934052 A EP95934052 A EP 95934052A EP 0786952 B1 EP0786952 B1 EP 0786952B1
Authority
EP
European Patent Office
Prior art keywords
support
clamping
sleeve
flange
seat
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
EP95934052A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0786952A1 (de
Inventor
Manfred Hirschmann
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
Priority claimed from DE29502040U external-priority patent/DE29502040U1/de
Application filed by Sifa Sitzfabrik GmbH filed Critical Sifa Sitzfabrik GmbH
Publication of EP0786952A1 publication Critical patent/EP0786952A1/de
Application granted granted Critical
Publication of EP0786952B1 publication Critical patent/EP0786952B1/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
    • A47C1/03205—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/59—Manually releaseable latch type
    • Y10T403/599—Spring biased manipulator

Definitions

  • the invention relates to a seat support for office chairs or the like with the features of the preamble of Claim 1.
  • a seat support for office chairs consisting of one with connected to a support column, at least partially a U-shaped cross-section, and a seat plate support and one Backrest support, the seat plate support and the Backrest support articulated about an axis of rotation with the Carrier part is connected and wherein between the Seat plate support and the backrest support and the Carrier part each set under clamping voltage Package of laminated discs is arranged, and this Lamellar discs on the seat plate support and Backrest supports are rotatably mounted and on one rigid in a side wall of the carrier part mounted cross bolt with longitudinal and / or vertical play are articulated, the clamping voltage in the range of Cross pin acts on the side of the lamella discs and an operating lever or the like for their Application or solution is present and where between the support part and the seat plate support and / or a spring under the backrest support Bias is arranged, for example, from the EP-A-0 198 056 known. Will back at one adjusted backrest without stress from a seated person accidentally the operating lever adjusted,
  • the object of the present invention is a To further train seat supports of the type mentioned at the beginning, that this rushing with simple means prevents becomes.
  • the cross bolt of a seat support of the type mentioned, on which the lamellar discs are articulated in a through the lamellar discs guided sleeve mounted along the axis of the Cross bolt is slidably arranged on the Clamping voltage receiving side of the package Lamellar discs a flange or the like and resilient on the other side of the package mounted on a head or flange of the cross bolt is.
  • the clamping means for applying the clamping voltage are engaged with the flange of the sleeve, which in the clamping position firmly on the package Lamellar washers. Between each Slats are at least partially inserted, have the holes that are essentially the have the same diameter as the Outside diameter of the sleeve.
  • the sleeve remains by friction firmly connected to the plate pack, as this is where the power is the spring between the support member and the Seat plate support or the backrest support over the Slats act on the panes and these in one Friction with the sleeve and this in turn in one Keep frictional engagement with the cross bolt. Only through one relieving movement by pressure on the backrest or the seat plate support detach the flange from the plate pack and the individual plate discs from each other.
  • the resilient mounting of the sleeve causes a reliable solution. It is beneficial if between the head or flange of the cross bolt and a bearing spring on a compression spring acting on the sleeve Stop sleeve is arranged.
  • Carrier part through the operating lever Slidable clamp rod arranged one of the Flange facing the sleeve, striving away from it, has first clamping slope.
  • At the end of the Cross bolt in front of the flange of the sleeve is one with a matching the first clamping slope
  • second Clamping part provided with a slant is axially movable is arranged. Moving the two Clamping slopes against each other in one direction causes an action on the sleeve flange and Lamella pack with force and leads to friction of these parts. Moving in the other direction allows the clamp to be released.
  • Clamping means a clamping disc, a clamping jaw or the like, which is connected to a trigger lever.
  • a pivoting movement of the release lever is in a Rotational movement of the clamping means implemented and that Clamping means and / or the flange of the sleeve have in Area of their interaction one clamping slope, one Clamping curve or an eccentric section.
  • the flange the sleeve or a part firmly connected to it, like an attachment, a spiral rising Clamping slope on.
  • the clamping means is pivotable in the Carrier part arranged and has on one side one with the clamping slope of the flange or with this connected part corresponding clamping slope and is on its other side with an im Carrier part mounted, movable from the outside Release lever connected.
  • Clamping means horizontally and transversely to the flange in the Carrier part rotatably mounted body, which at least in Area of the flange one eccentric to the axis of rotation Has section and with one in the carrier part mounted, externally movable trigger lever connected is.
  • the sleeve on the other side of the package a head or flange of the cross bolt is mounted.
  • the force of this spring is to be measured so that it Holding force of the tensioned plate pack when removed of the clamping means is not overcome and only at mechanical action on the slat and Disc package, for example by pressing the with the plate carrier connected to the plate pack, the The sleeve with the flange detaches from the plate pack and this releases.
  • It is advantageous between the Head or flange of the cross bolt and one on the Sleeve acting compression spring a bearing and Stop sleeve arranged. Between the flange and the Slat package can also be a disc spring or a Spring washer can be arranged.
  • 1 to 4 consists of a Carrier part 1 with a U-shaped cross section, which by a first pin 4 articulated with a seat plate support 2 and articulated with a second pin 6 Backrest support 3, both also with a U-shaped Cross section, is connected. Between the carrier part 1 and the seat plate support 2 is a pretensioned Compression spring 5 arranged. In an area behind the two bolts 4, 6 is rigidly in the carrier part Cross bolt 9 arranged on which there is slidable sleeve 13 is located. The cross pin 9 is with the sleeve 13 in elongated holes 8 of a package 10 Lamellar discs guided. Are between the slats 10 Disks 10 'arranged with holes with a light Play on the sleeve 13.
  • the elongated holes 8 are approximately in the middle of the elongated lamellar discs arranged, which is rotatable at one end on the Connecting bolt 6 between the carrier part 1 and the Backrest support 3 and at its other end on one retaining bolts 7 located further back Backrest support 3 are articulated. A move around the pivots mentioned allow a different Adjustment of the inclination of seat support 2 and Backrest support 3 opposite the support part 1.
  • the Lamellar discs cause frictional engagement with the Disks 10 'a determination of the desired Position.
  • the friction is activated by pressing one Trigger lever 11, which causes a clamping rod 20 in the carrier part 1 moves with a clamping slope on one with a matching clamping slope provided clamping part 18 acts, whereby a lateral Force is exerted on the disk pack 10.
  • the um the cross pin 9 arranged sleeve 13 has on it a side 17 facing the clamping part 18 with which they are in the clamping position on the plate pack 10 is present.
  • the clamping part 18 is axially displaceable the end of the cross bolt 9 stored.
  • On her other Side is the sleeve 13 in a storage and Stop sleeve 15 stored and in this one weak compression spring 16 applied.
  • the bearings and Stop sleeve 15 abuts the head 14 of the cross bolt 9.
  • the Cross bolt 9 On the other side of the plate pack 10 is the Cross bolt 9 by a press nut 19 in the side the carrier part 1 held.
  • First relaxation by moving the seat support lifts the Frictional engagement between the disks 10 'and the sleeve 13, or the sleeve 13 and the cross pin 9, which by the Spring 5 is caused by the slats 10, and Spring 16 supports the release of the sleeve 13 from the Lamellar discs.
  • FIG. 5 to 7 show a seat support 101, which in essentially from a carrier part 102, a Seat plate support 103 and a backrest support 104 consists.
  • the three carriers at least partially a u-shaped cross section on and their side walls partially overlap.
  • the carrier part 102 is fixed mounted on a support column 114 with a gas spring.
  • the backrest support 104 is via a cross bolt 106 articulated in a central area with the Carrier part 102 connected.
  • the seat plate support 103 is also articulated at the front via a cross bolt 105 connected to the carrier part 102.
  • An articulated connection between the seat plate support 103 and the Backrest support 104 is behind the connection between the support member 102 and the backrest support 104 produced by a further cross bolt 126.
  • the relative movement of the three carriers is shown in FIG. 6 and 7.
  • the opening and closing corresponds Movement of the seat plate carrier 103 with that on it articulated backrest support 104 in a ratio that avoids the so-called shirt-pulling effect.
  • the Relative movement takes place with or against the force a spring 127 between the seat plate support 103 and the carrier part 102.
  • Lamella pack 110 made of elongated, flat Metal discs hinged to a bolt 128.
  • the plate pack 110 On his the other end is the plate pack 110 with elongated holes 129 slidably mounted on a non-rotatable sleeve 118, which also slide on one in the carrier part 102 arranged retaining bolt 107 is mounted.
  • the Immersion depth of the plate pack 110 along the Elongated holes 129 in the carrier part 102 determine the Position of seat plate support 103 and Backrest support 104. Between the individual slats 110, metal bores 110 'are inserted, the bores have substantially the outer diameter of the Correspond to sleeve 118.
  • a jig for the plate pack 110 is the respective position lockable.
  • the sleeve 118 has a flange 109 on, a spiral on his head has increasing clamping slope, with a matching clamping slope of a swivel in the support part 102 mounted clamping means 108 can be engaged is.
  • the clamping means 108 stands with a release lever 112 in connection, by means of which the clamping slopes of the Clamping means 108 and flange 109 in and out Intervention can be brought. Are the bevels engages, the plate pack 110 with the Disks 110 'pressed together and the respective Position of seat plate support 103 and Backrest support 104 is locked.
  • a second Release lever 111 acts on the deflection arm 113 Gas spring in the support column 114.
  • Fig. 8 shows the clamping means 108 which is pivotable with a pin 116 in a bore of the carrier part 102 is stored. It consists of an approximately triangular one Plate with the pin 116 as a tip. At one end the base is made with a bevel 117 provided several levels and points at the other end the base has a recess 130 for the engagement of the Release lever 112 on. By means of the release lever 112 can the clamping means 108 rotated about the pin 116 will. It also has a larger bore 115 for the cross bolt 106.
  • the retaining bolt 107 has a head 124 and at its other end Thread 131 and is in holes in the support member 102 firmly anchored to a nut 125.
  • a sleeve 118 is slidably and rotationally fixed, whose outer diameter is about the diameter of the Elongated holes of the plate pack 110 corresponds.
  • the sleeve 118 has a flange 119 with which it is flat a washer 120, behind it a plate spring 121 and the plate pack 110 is present. Between disks 110 'are inserted into individual lamellae sit on sleeve 118 with slight play.
  • the flange 119 is spiral with a head ascending clamping slope provided with the Clamping slope 117 of the clamping means 108 corresponds. If the bevels are brought into engagement, presses the flange 119 the plate pack 110 with the washers 110 'against one on the head 124 of the retaining bolt 107 lying bearing and stop sleeve 123. By the Clamping force and friction of the individual lamellae of the Lamella pack 110 with the disks 110 'is created fixed friction.
  • Stop sleeve 123 is a weak coil spring 122 arranged for the sleeve 118, which is a loosening of the Friction between the flange 119, the Lamella pack 110, the disks 110 'and the bearing and Stop sleeve 123, and the intermediate and adjacent parts relieved when a mechanical Force, for example by pressing the seat or the Backrest acts on the plate pack and becomes one spontaneous release of the frictional connection leads.
  • FIG. 10 to 14 relate to a second embodiment of a seat support 200 according to the invention.
  • a rigidly arranged U-beam part 201 with a cross bolt 217 in the upper area shown on this articulated backrest support 202.
  • a plate pack 205 is on one under the cross bolt 217 lying bolts 203 of the backrest support 202 hinged and slides along at its other end arranged elongated holes 218 on a sleeve 206, the sliding on a retaining bolt 204 of the carrier part 201 is stored.
  • the length of the elongated holes 218 determines the Swivel path that the backrest support 202 around Cross bolt 217 can cover.
  • the sleeve 206 is provided with a flange 208, with which it of a clamping means 212 on the disk pack 205 with the Disks 205 'can be pressed. Between the flange 208 and the plate pack 205 are another Washer 215 and a plate spring 216 arranged.
  • the sleeve 206 is with its flange 208 opposite end on a weak Coil spring 209 in a bearing and stop sleeve 207 mounted on a head 110 of the retaining bolt 204 is present.
  • Clamp 212 is here an elongated, cylindrical clamping body, the two has flattened sides 212 '' and on the Retaining bolt 204, and a further cross bolt 213 rotatable parallel to the longitudinal axis of the carrier part 101 is stored. The storage takes place accordingly shaped cross holes in the clamping means 212. Between the the two bearings is the clamping means 212 with one of externally actuated trigger lever 214 connected to whose help it can be rotated a bit around its axis can.
  • the flattened sides 212 '' of the clamping means 212 are arranged so that one of them in one Position parallel to the flange 208 of the sleeve 106 and the other parallel to the side wall of the carrier part 201 lies. In this position, shown in Fig. 11 there is no clamping force on the plate pack 205 exercised. If the clamping means 212 is now rotated somewhat, as shown in Fig. 12, the larger, full diameter 212 'of the clamping means 212 against the side wall of the carrier part 201 and the Flange 208 and so exerts a clamping force on the Lamella pack 205. As for the first ones above Explanations described, remains here Friction of the compressed parts first obtained when the clamping force is removed again. The release takes place, as also described above, by mechanical action by moving the Backrest.

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)
  • Clamps And Clips (AREA)
  • Fuel Cell (AREA)
EP95934052A 1994-10-17 1995-10-12 Sitzträger für bürostühle oder dergleichen Expired - Lifetime EP0786952B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE9416595U 1994-10-17
DE9416595 1994-10-17
DE29502040U 1995-02-08
DE29502040U DE29502040U1 (de) 1995-02-08 1995-02-08 Sitzträger für Bürostühle o.dgl.
PCT/DE1995/001402 WO1996011611A1 (de) 1994-10-17 1995-10-12 Sitzträger für bürostühle oder dergleichen

Publications (2)

Publication Number Publication Date
EP0786952A1 EP0786952A1 (de) 1997-08-06
EP0786952B1 true EP0786952B1 (de) 1998-09-23

Family

ID=25962543

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95934052A Expired - Lifetime EP0786952B1 (de) 1994-10-17 1995-10-12 Sitzträger für bürostühle oder dergleichen

Country Status (14)

Country Link
US (1) US5685607A (cs)
EP (1) EP0786952B1 (cs)
JP (1) JPH10510724A (cs)
AU (2) AU3649895A (cs)
BR (1) BR9508884A (cs)
CA (1) CA2203193C (cs)
CZ (1) CZ286553B6 (cs)
DE (1) DE59503728D1 (cs)
DK (1) DK0786952T3 (cs)
ES (1) ES2126319T3 (cs)
FI (1) FI971600A0 (cs)
NO (1) NO964960L (cs)
PL (1) PL178768B1 (cs)
WO (1) WO1996011611A1 (cs)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0786952B1 (de) * 1994-10-17 1998-09-23 SIFA Sitzfabrik GmbH Sitzträger für bürostühle oder dergleichen
US6099197A (en) * 1995-11-09 2000-08-08 Gauron; Jacques P. Locking spring-biased latch
DK0884964T3 (da) * 1996-10-11 2002-07-15 Wolfgang Emmenegger Stol, navnlig en kontorstol
US6139103A (en) * 1997-03-12 2000-10-31 Leggett & Platt, Inc. Synchronized chair seat and backrest tilt control mechanism
US5909924A (en) * 1997-04-30 1999-06-08 Haworth, Inc. Tilt control for chair
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.
DE29804382U1 (de) 1998-03-12 1998-06-10 SIFA Sitzfabrik GmbH, 92237 Sulzbach-Rosenberg Klemmvorrichtung für Sitzträger
DE29812598U1 (de) * 1998-07-15 1998-10-22 SIFA Sitzfabrik GmbH, 92237 Sulzbach-Rosenberg Klemmung für Sitzträger von Stühlen
US6174031B1 (en) * 1999-06-07 2001-01-16 Haworth, Inc. Actuator handle for an office chair
GB0010238D0 (en) * 2000-04-28 2000-06-14 Northeastern Components Intern Locking mechanism for chair and pushbutton control therefor
US6447063B1 (en) * 2000-07-07 2002-09-10 Leggett & Platt Ltd. Chair seat tilt mechanism
US7036881B1 (en) * 2000-07-07 2006-05-02 Leggett & Platt Ltd. Chair seat tilt mechanism
US6488336B1 (en) * 2001-09-25 2002-12-03 Tung Yu Oa Co., Ltd. Backrest adjustment device
ITMI20060022U1 (it) * 2006-01-23 2007-07-24 Donati Spa Dispositivo di regolazione dell'inclinazione dello schienale o della seduta di una sedia
AU2007240283B2 (en) * 2006-04-24 2012-11-01 Crown Equipment Corporation Materials handling vehicles having seats with pivoting backrests
DE202013100574U1 (de) * 2013-02-07 2014-05-08 Bock 1 Gmbh & Co. Kg Mechanik für einen Bürostuhl
US10383448B1 (en) * 2018-03-28 2019-08-20 Haworth, Inc. Forward tilt assembly for chair seat
DE102018123414A1 (de) * 2018-09-24 2020-03-26 Figueroa Büro für Gestaltung GmbH Stuhl mit einer Gelenkanordnung und Gelenkanordnung
TWI827479B (zh) * 2023-02-22 2023-12-21 陳信華 椅子調整裝置的控制拉桿結構

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0045925A1 (de) * 1980-08-08 1982-02-17 F. Martin Steifensand Sitzmöbel- und Tischfabrik GmbH & Co. KG Sitzmöbel, insbesondere Bürodrehsessel
DE3425387A1 (de) * 1984-07-10 1986-02-27 Rolf 7298 Loßburg Völkle Sitzmoebel mit klemmeinrichtung zum verstellen der neigung von rueckenlehne und/oder sitzteil
US5066069A (en) * 1990-05-03 1991-11-19 Systems Furniture Company Chair back and seat adjustment mechanism
IE66891B1 (en) * 1991-02-15 1996-02-07 Ashfield Eng Co Wexford Ltd An adjustment mechanism for furniture
DE9211244U1 (de) * 1992-08-21 1992-10-29 Friedrich W. Dauphin GmbH & Co, Entwicklungs- und Beteiligungs-KG, 8561 Offenhausen Stuhl
IL103477A0 (en) * 1992-10-20 1993-03-15 Paltechnica Nitzanim Office and like chairs
US5356200A (en) * 1992-10-23 1994-10-18 Doerner Products Ltd. Unitary brake for a chair tilt mechanism
DE4335017A1 (de) * 1993-10-14 1995-04-20 Sifa Sitzfabrik Gmbh Betätigungsvorrichtung für Sitzträger für Stühle, insbesondere Drehstühle
EP0786952B1 (de) * 1994-10-17 1998-09-23 SIFA Sitzfabrik GmbH Sitzträger für bürostühle oder dergleichen

Also Published As

Publication number Publication date
ES2126319T3 (es) 1999-03-16
CA2203193A1 (en) 1996-04-25
NO964960D0 (no) 1996-11-21
US5685607A (en) 1997-11-11
AU1859699A (en) 1999-05-13
BR9508884A (pt) 1997-12-30
DK0786952T3 (da) 1999-06-14
NO964960L (no) 1996-11-21
WO1996011611A1 (de) 1996-04-25
FI971600A7 (fi) 1997-04-16
CZ286553B6 (cs) 2000-05-17
JPH10510724A (ja) 1998-10-20
DE59503728D1 (de) 1998-10-29
AU3649895A (en) 1996-05-06
CA2203193C (en) 2000-04-18
PL318676A1 (en) 1997-07-07
EP0786952A1 (de) 1997-08-06
FI971600A0 (fi) 1997-04-16
CZ33197A3 (cs) 1999-09-15
PL178768B1 (pl) 2000-06-30

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