EP2298133B1 - Stuhl - Google Patents

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Publication number
EP2298133B1
EP2298133B1 EP10175198A EP10175198A EP2298133B1 EP 2298133 B1 EP2298133 B1 EP 2298133B1 EP 10175198 A EP10175198 A EP 10175198A EP 10175198 A EP10175198 A EP 10175198A EP 2298133 B1 EP2298133 B1 EP 2298133B1
Authority
EP
European Patent Office
Prior art keywords
support
locking
backrest
backrest support
seat support
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.)
Active
Application number
EP10175198A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2298133A1 (de
Inventor
Benjamin Breitkreuz
Frank Weisser
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.)
Friedrich W Dauphin GmbH and Co
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
Priority to PL10175198T priority Critical patent/PL2298133T3/pl
Publication of EP2298133A1 publication Critical patent/EP2298133A1/de
Application granted granted Critical
Publication of EP2298133B1 publication Critical patent/EP2298133B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/42—Support for the head or the back for the back of detachable or loose type

Definitions

  • the invention relates to a backrest having a chair, in particular an office chair.
  • the US 4,102,549 discloses a generic chair with a foot frame carrying a seat support.
  • a seat is attached to the seat support.
  • the seat support includes a back-to-back support receptacle for holding a back-to-back support.
  • the back-back support is insertable into the back-back support and is fixable in this.
  • Laying down the back-back support is a holding element, which may be a screw and then passes through an opening in the back-back support and the seat support like a bolt.
  • the installation of this chair is uncomfortable.
  • the fixation of the back-back support in the back-back support receptacle is not satisfactory.
  • the invention has for its object to provide a chair whose back-backrest support or backrest tool-free in a simple manner to the seat support is attachable. Furthermore, the back-back support should be mountable to the seat support substantially without play, so that the back-back support can not wobble. The back-back support and the backrest should also be easy to disassemble again.
  • the back-back support is releasably connected to the seat support.
  • the backrest can thus optionally be removed from the seat support again, so then the chair is easily and space-saving transportable.
  • Fig. 1 shows an office chair as a whole.
  • the chair comprises a chair frame 1.
  • the chair frame 1 has a foot frame 2, which is supported by a plurality of running rollers 3 against a floor, not shown, such as a floor.
  • a height-adjustable, extending in a vertical direction chair column 4 is attached to the upper end of a seat support 5 is attached.
  • a seat height adjustment device (not shown) is provided, which serves for height adjustment of the chair column 4.
  • the seat 6 On the seat support 5, a seat 6 is supported.
  • the seat 6 provides a seat surface that allows for comfortable sitting.
  • the seat support 5 and the seat 6 may alternatively be configured in one piece.
  • the backrest 8 provides for a person sitting on the seat surface a plant area for the back.
  • Armrests can also be attached to the seat support 5 or to the backrest 8 or the seat 6.
  • the seat support 5 has a substantially central storage area 9, in which the chair pillar 4 is mounted via a corresponding bearing device (not shown). Behind the bearing area 9, the seat support 5 has an elongated, dimensionally stable back-backrest support receptacle 10, which serves for holding or partially receiving the backrest support 7.
  • the back-back support mount 10 is configured like a shaft and extends substantially horizontally. It is designed as a rectangular profile and is each end open. The walls 11, 12, 13 are thus each flat and plate-like.
  • the back-back support 10 is formed by a top wall 11, a bottom wall 12 opposite thereto, and two opposing side walls 13 connecting them to each other.
  • the upper and lower walls 11, 12 each extend substantially horizontally, while the side walls 13 extend substantially vertically. Its central longitudinal axis is substantially horizontal.
  • the back-backrest support receptacle 10 is open to the front and rear, wherein the opening to the front is not absolutely necessary. Rear, the back-backrest support receptacle 10 has an import opening 14, which is accessible from the outside. Opposite to the insertion opening 14, a front connection opening 15 is provided in the back-backrest support receptacle 10, which opens into the storage area 9 inside.
  • the connection opening 15 is optional.
  • the back-back support 7 has an angle shape. It comprises a straight insertion section 16 and a substantially perpendicular to this straight, holding portion 17 to which the backrest 8 is attached.
  • the back-back support 7 has substantially a constant, rectangular cross-section on a nikabĂȘtförmiger or circular or oval cross-section either constant type or conically tapering is also possible.
  • the cross-section of the back-back support 7 substantially corresponds to the corresponding inner transverse dimensions of the back-back support 10 so that the insertion portion 16 can be inserted into the back-back support 10 and there can be kept safe.
  • the walls 11, 12, 13 of the back-backrest support receptacle 10 are arranged immediately adjacent to the corresponding side surfaces of the insertion portion 16.
  • a manually operable securing means 18 for fixing the backrest 8 and the backrest support 7 to the seat support 5 is provided, which lies in the vertical symmetry plane of the office chair and in Is designed substantially symmetrical to this.
  • the securing device 18 is arranged adjacent to the connecting opening 15 in the front region of the backrest carrier mount 10. It comprises a one-piece, dimensionally stable securing body 19, which is mounted displaceably in the back-backrest support receptacle 10.
  • the securing body 19 includes a connecting pin 20 and a fixedly connected thereto, the end-locking member 21.
  • the connecting pin 20 is elongated and has a central longitudinal axis 22. He is round in cross section.
  • the locking element 21, however, is designed plate-like. It projects laterally beyond the connecting pin 20 and has an elongated, substantially rectangular shape with its longitudinal ends 23 opposite each other being semicircular.
  • the connecting pin 20 extends vertically with the locking member 21 mounted on top of the connecting pin 20.
  • the bearing opening 24 is formed in the upper wall 11 of the back-back support receptacle 10 adjacent to the connection opening 15. Their shape and size substantially corresponds to the shape of the locking element 21 and its horizontal surface dimensions.
  • the bearing opening 24 thus has two mutually opposite semi-circular ends 26 which face the respective side walls 13.
  • the vertical thickness of the locking member 21 is larger than the vertical thickness of the upper wall 11.
  • the bearing hole 25 is formed in the lower wall 12 adjacent to the connection hole 15. Their shape and size substantially corresponds to the cross-section of the connecting Stiffis 20.
  • the locking element 21 is located in the upper bearing opening 24, while the connecting pin 20, the back-back support holder 10 passes vertically through and the Bearing opening 25 penetrates.
  • a screw-pressure spring 27 is arranged, which rotates the connecting pin 20 helically.
  • the screw-pressure spring 27 is supported at the bottom inside on the lower wall 12th and on top of the underside of the locking element 21 from. It pushes the movable locking element 21 accordingly upwards or outwards.
  • the lower end of the connecting pin 20, that is the end facing away from the locking element 21, is located below the lower wall 12.
  • a one-piece operating lever 28 is articulated, which is part of the fuse Device 18 is.
  • the actuation lever 28 includes an actuation handle 29 and an actuation cam 30 fixedly connected thereto.
  • the actuation cam 30 has a cam-like projection 33 projecting radially from the otherwise substantially cylindrical cam body.
  • the actuating cam 30 is axially penetrated by an elongated, circular cross-section bearing opening 31.
  • the bearing opening 31 extends along the actuating cam 30.
  • a cylindrical bearing pin 32 is arranged, which is mounted on the lower end of the connecting pin 20 and also part of the securing device 18 ,
  • the bearing pin 32 has a central longitudinal axis 34 which defines a bearing axis.
  • the central longitudinal axis 34 is substantially horizontal.
  • the lock can also be done by a Drehverrieglung or a bayonet lock. In the bayonet closure a frictional locking is possible, optionally via a dead center.
  • a locking recess 35 Adjacent to the front end of the insertion portion 16, a locking recess 35 is provided at the top of the insertion portion 16, which faces the upper wall 11 in the assembled state of the office chair.
  • the locking recess 35 is open at the top.
  • the shape and size of the locking recess 35 correspond substantially to the shape of the locking element 21 and its horizontal surface dimensions.
  • the locking recess 35 has a limited vertical depth which is between 1 mm and 5 mm, preferably between 1.5 mm and 3.5 mm. It is bounded laterally by the material of the import section 16, which forms a vertical, circumferentially closed locking wall.
  • the opening 36 penetrates the insertion portion 16 in the vertical direction completely and divides the Arretier-recess 35 substantially in two halves. It extends substantially to the rear longitudinal side 37 of the locking recess 35. Its width substantially corresponds to the diameter of the connecting pin 20.
  • the slot-like opening 36 opened to the seat support 5 is not for the operation of the invention absolutely necessary. In addition, it is alternatively possible to provide the slot-like opening 36 on the seat support 5 and to secure the actuating handle 29 on the backrest support 7.
  • At the insertion portion 16 at least one locking element 38 is provided.
  • the locking elements 38 are identical and are located laterally below in the insertion section 16. They each have a strip-like, resilient support member 39, at its free end a downwardly projecting locking lug 40 is provided.
  • Each locking lug 40 has a flat, vertical retaining surface 41, which faces backwards.
  • the locking elements 38 serve to further fix the backrest 8 and the backrest support 7 on the seat support 5. They are provided at the front of the insertion section 16.
  • the import section 16 is to be inserted along a horizontal insertion direction 42 via the rear insertion opening 14 in the back-backrest support receptacle 10.
  • the holding portion 17 extends from the insertion portion 16 upwards and the actuating handle 29 extends from the bearing pin 32 almost vertically downwards.
  • the head portion 44 has a substantially smaller radial thickness than the cam projection 33.
  • the screw-compression spring 27 presses the locking element 21 vertically upward, so that the underside of the locking element 21 is approximately at the bottom of the upper Wall 11 is aligned. After the locking element 21 is thicker than the upper wall 11, the locking element 21 protrudes upwards from the bearing opening 24 with respect to the upper wall 11.
  • the locking member 21 thus does not protrude into the back-backrest support receptacle 10 so that it is virtually free and the import section 16 can be inserted to its intended position in the back-backrest support receptacle 10.
  • the securing body 19 or the locking element 21 is thus in its uppermost position, which is a release position for the back-back support 7 and the insertion section 16.
  • the end position of the back-back support 7 is particularly good Fig. 2 out.
  • the locking lugs 40 springs or jump independently in a lower locking position, in which they then stand in locking latching connection with the seat support 5. Locking is not mandatory, but helps with correct installation. How out Fig. 2 As can be seen, the retaining surfaces 41 are then arranged adjacent to a corresponding vertical wall of the seat support 5, so that the interaction between the holding surfaces 41 and the vertical wall, a withdrawal of the import section 16 is prevented against the Ein 1500direction 42.
  • the latching lugs 40 can engage in at least one latching recess in the seat carrier 5.
  • the locking elements 38 audibly engage in their locking position.
  • the installer receives a feedback that the end position of the back-back support 7 has been reached and a lock has occurred.
  • the locking element 38 serves at the same time as a pull-out protection when not properly closed eccentric and as user protection in case of faulty eccentric clamping.
  • the securing device 18 is responsible.
  • the actuating lever 28 is to operate manually via the actuating handle 29. He is according to Fig. 2 clockwise from its release position into the Fig. 2 shown substantially horizontal locking position to pivot about the central longitudinal axis 34 of the bearing pin 32, wherein the actuating cam 30 is pivoted accordingly.
  • pivoting the cam projection 33 is run over, so that the locking element 21 via the connecting pin 20 axially against the force of the screw-pressure spring 27 vertically downwards into the directly below locking recess 35 in the insertion section 16 is pulled.
  • the locking wall of the locking recess 35 is substantially aligned here with the side wall of the bearing opening 24. Furthermore, the upper side of the locking element 21 is flush with the outside of the upper wall 11.
  • the locking element 21 engages positively in the locking recess 35 and lies flat against the bottom thereof. Further, the locking member 21 is still in the bearing opening 24. The side surfaces of the locking member 21 are thus immediately adjacent to the vertical locking wall of the locking recess 35 and the vertical side wall of the bearing opening 24, which ensures a locking of the back-back support 7 and prevents relative movement of the back-back support 7 relative to the seat support 5.
  • the back-back support 7 is fixed by the positive engagement both in the insertion direction 42 and against it.
  • the locking member 21 acts as a latch between the seat support 5 and the back-back support 7 in that it is positively in engagement with both the insertion portion 16 and the seat support 5.
  • the locking position of the actuating lever 28 is an over-dead-center position. This position is stable and can only be left by the application of an external force.
  • the actuating handle 29 has been pivoted to reach the locking position slightly over the effective area of the cam projection 33 away. In the final position of the insertion portion 16 of the connecting pin 20 passes through the opening 36 and is preferably at the rear end.
  • the actuating handle 29 is to pivot counterclockwise sense down, again the actuating cam 30 is pivoted accordingly.
  • an increased external manual force is to be applied.
  • the cam projection 33 is run over again.
  • the screw-pressure spring 27 can then push the locking element 21 out of the locking recess 35 at the top, so that the locking element 21 is brought out of engagement with the locking recess 35.
  • the latching lugs 40 are to be pivoted manually upwards, so that no latching connection between the back-backrest support 7 and the seat support 5 exists. It is also possible to arrange the latching element 38 differently, so that the pivoting of the latching lugs 40 takes place laterally. The backrest-backrest support 7 can then be pulled back out of the back-backrest support receptacle 10 counter to the insertion direction 42.
  • the backrest support 7 can thus be mounted without tools on the seat support 5 and also removed from this tool without tools. This allows a very simple and fast assembly and disassembly.
  • the execution of assembly and disassembly can be done as described herein without tools or with simple tools, so then no unintentional Operation is possible.
  • simple tools in question would be a pen, for example, with a diameter of 4 mm, or even a paper clip.
  • the import section 16 is hollow. It may be formed, for example, as a rectangular profile.
  • the insertion section surrounds the back-back support holder.
  • the locking position of the securing body 19 is an upper position, while the release position of the securing body 19 is a lower position. This is thus the reverse of the Ausbowungsförm previously described.
  • the invention has been described here with reference to an office chair. Such an office chair, for example, also have a known synchronizing mechanism. The invention can also be found in other chairs with backrest application.
  • the back-backrest support receptacle 10 can also be attached to the seat support 5 as a separate element.
  • screw-pressure spring 27 instead of the screw-pressure spring 27, other resilient or elastic elements can be used.
  • blocks of a resilient, resilient material can be used.
  • the locking elements 38 may also be provided on the seat support 5 and then engage in a corresponding recess in the backrest support 7.

Landscapes

  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP10175198A 2009-09-18 2010-09-03 Stuhl Active EP2298133B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10175198T PL2298133T3 (pl) 2009-09-18 2010-09-03 KrzesƂo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009041822A DE102009041822A1 (de) 2009-09-18 2009-09-18 Stuhl

Publications (2)

Publication Number Publication Date
EP2298133A1 EP2298133A1 (de) 2011-03-23
EP2298133B1 true EP2298133B1 (de) 2012-03-14

Family

ID=43243013

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10175198A Active EP2298133B1 (de) 2009-09-18 2010-09-03 Stuhl

Country Status (10)

Country Link
US (1) US8449035B2 (ko)
EP (1) EP2298133B1 (ko)
KR (1) KR20110031120A (ko)
CN (1) CN102018384B (ko)
AT (1) ATE548945T1 (ko)
DE (1) DE102009041822A1 (ko)
DK (1) DK2298133T3 (ko)
ES (1) ES2381586T3 (ko)
PL (1) PL2298133T3 (ko)
ZA (1) ZA201006525B (ko)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8864230B2 (en) * 2010-06-15 2014-10-21 Betty A. Augustat Ergometric chair apparatus
USD697726S1 (en) 2012-09-20 2014-01-21 Steelcase Inc. Chair
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
DE102014003676A1 (de) 2014-03-14 2015-09-17 Bock 1 Gmbh & Co. Kg Stuhl, insbesondere BĂŒrostuhl
US9578971B2 (en) * 2015-08-02 2017-02-28 Dongguan Kentec Office Seating Co., Ltd. Armrest interval adjustment structure for a chair
US9795220B1 (en) * 2016-05-09 2017-10-24 Atec International Team Co., Ltd. Quickly released and fastened adjustment mechanism
KR101698730B1 (ko) * 2016-11-01 2017-01-20 읎ëȘ…ìŁŒ ìčŽì‹œíŠžìš© 발받ìčšì˜ 위ìč˜ìĄ°ì ˆìˆ˜ë‹š
DE102020101034A1 (de) * 2020-01-17 2021-07-22 Bock 1 Gmbh & Co. Kg TrĂ€ger fĂŒr ein Sitzmöbel
GB202007082D0 (en) * 2020-05-13 2020-06-24 Gibson Aaron Assemblage for forming a treatment chair
DE102021113337A1 (de) * 2021-05-21 2022-11-24 Bock 1 Gmbh & Co. Kg RĂŒckenlehnentrĂ€ger fĂŒr ein Sitzmöbel
DE102021214820B4 (de) 2021-12-21 2023-10-19 Sedus Stoll Aktiengesellschaft Verbindungsanordnung und BĂŒrostuhl
US11672347B1 (en) * 2022-01-18 2023-06-13 Comfordy Co., Ltd. Chair back and seat assembly
US11730269B1 (en) * 2022-03-10 2023-08-22 Gary Rosebrook Posture control chair
US11622631B1 (en) * 2022-09-15 2023-04-11 Jay A. Berkowitz Apparatus and method for assembling a modular ergonomic chair without using fasteners
TWI826326B (zh) * 2023-05-23 2023-12-11 柣çŠčćŻŠæ„­è‚Ąä»œæœ‰é™ć…Źćž æ€…ć…·æ‰¶æ‰‹ç”„èŁç”æ§‹

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US2973031A (en) * 1958-12-08 1961-02-28 Cramer Posture Chair Company I Cast base for chair seats
US4102549A (en) * 1977-04-13 1978-07-25 Knoll International, Inc. Apparatus for adjusting the back support of a chair
JP2500932Y2 (ja) * 1993-05-12 1996-06-12 æ ȘćŒäŒšç€Ÿć†…ç”°æŽ‹èĄŒ 怅 歐
US5462338A (en) * 1994-04-01 1995-10-31 Krueger International, Inc. Adjustable arm control
DE29502276U1 (de) * 1995-02-13 1995-03-30 Actiform Sitzmöbel GmbH, 76661 Philippsburg Stuhl, insbesondere Arbeitssitz, mit und ohne RĂŒckenlehne
CA2201253C (en) * 1997-03-27 2001-08-28 William R. Breen Chair control
CN2327246Y (zh) * 1997-12-26 1999-07-07 é™ˆæ˜ŽćŸŽ äž€ç§ç»„ćˆćŒé èƒŒæ€…
US5944387A (en) * 1998-05-04 1999-08-31 Northfield Metal Products Ltd. Adjustment mechanism for chairs
CN2335466Y (zh) * 1998-10-12 1999-09-01 ćŻŒé”ąæœ‰é™ć…Źćž ćŻćŒŻæŠ˜çš„æ€…èƒŒéȘšæž¶èŁ…çœź
GB9928509D0 (en) * 1999-12-03 2000-02-02 Unit Press Limited Improvements to chairs
US6659560B1 (en) * 2003-01-13 2003-12-09 Ching-Hui Chi Office chair
DE10312446B3 (de) * 2003-03-20 2004-08-26 Steelcase Werndl Aktiengesellschaft Stuhl mit RĂŒckenlehnen-Schnellkupplungsvorrichtung
US7380884B2 (en) * 2003-10-29 2008-06-03 Leggett & Platt Ltd. Switching apparatus
US20070200407A1 (en) * 2006-02-27 2007-08-30 Eberlein David C Seating unit with adjustable components
US8104838B2 (en) * 2009-12-15 2012-01-31 Po-Chuan Tsai Armrest assembly that can adjust its leftward and rightward positions

Also Published As

Publication number Publication date
ATE548945T1 (de) 2012-03-15
PL2298133T3 (pl) 2012-08-31
ZA201006525B (en) 2013-08-28
US8449035B2 (en) 2013-05-28
DK2298133T3 (da) 2012-07-09
EP2298133A1 (de) 2011-03-23
CN102018384A (zh) 2011-04-20
KR20110031120A (ko) 2011-03-24
DE102009041822A1 (de) 2011-03-24
CN102018384B (zh) 2014-12-31
US20110068613A1 (en) 2011-03-24
ES2381586T3 (es) 2012-05-29

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