EP0179224A2 - Dispositif à ressort pneumatique, en particulier pour un support de dossier d'une chaise de bureau - Google Patents

Dispositif à ressort pneumatique, en particulier pour un support de dossier d'une chaise de bureau Download PDF

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Publication number
EP0179224A2
EP0179224A2 EP85110541A EP85110541A EP0179224A2 EP 0179224 A2 EP0179224 A2 EP 0179224A2 EP 85110541 A EP85110541 A EP 85110541A EP 85110541 A EP85110541 A EP 85110541A EP 0179224 A2 EP0179224 A2 EP 0179224A2
Authority
EP
European Patent Office
Prior art keywords
gas spring
sleeve part
sleeve
arrangement according
backrest
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.)
Granted
Application number
EP85110541A
Other languages
German (de)
English (en)
Other versions
EP0179224A3 (en
EP0179224B1 (fr
Inventor
Elke Dauphin Geb. Caplick
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.)
Buerositzmobelfabrik Friedrich-W Dauphin & Co GmbH
Original Assignee
Buerositzmobelfabrik Friedrich-W Dauphin & Co 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 Buerositzmobelfabrik Friedrich-W Dauphin & Co GmbH filed Critical Buerositzmobelfabrik Friedrich-W Dauphin & Co GmbH
Priority to AT85110541T priority Critical patent/ATE42451T1/de
Publication of EP0179224A2 publication Critical patent/EP0179224A2/fr
Publication of EP0179224A3 publication Critical patent/EP0179224A3/de
Application granted granted Critical
Publication of EP0179224B1 publication Critical patent/EP0179224B1/fr
Expired 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
    • A47C1/03238—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 peg-and-notch or pawl-and-ratchet mechanism
    • 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

Definitions

  • the invention is directed to a gas spring arrangement according to the preamble of claim 1.
  • Such gas spring assemblies are used in particular to dampen the pivoting movement of the backrest support part or the backrest and, if necessary, coordinate the seat with office chairs.
  • detachable locking devices In order to give the user of such office chairs the possibility of either permanently adjusting the backrest or seat inclination in a desired position or of keeping the backrest or seat pivotable so that they can follow the body movements, it is known to prevent the pivoting movement, provide detachable locking devices. Locking devices of this type can act directly on the gas spring either when using length-adjustable gas springs.
  • a mechanical locking device in addition to the gas spring. Such mechanical locking devices have the advantage that less expensive gas springs can be used.
  • the locking device should enable an absolutely secure fixation, e.g. despite the relatively high torques that occur.
  • the actuation of the locking device should be possible with little effort, so that easy handling is possible.
  • care must be taken to ensure that the pivoting movement in the triggered state is not hindered by the locking device and is only damped by the gas spring which takes effect.
  • the object of the invention is to design a gas spring arrangement of the type mentioned at the outset in such a way that reliable detachment is made possible with easy detachability, the aim being a construction which is as simple as possible and thus equally reliable and inexpensive to implement.
  • a particularly good surface pressure is achieved in an embodiment according to claim 2.
  • the constructive measures provided in accordance with claim 3 ensure that the piston part and the sleeve part can be clamped relative to one another without any problems, and that the free pivoting movement is not impeded by clamping in the released state of the locking device.
  • the embodiment according to claim 4 ensures that a stop, in particular when handling the actuating handle, fixes the sleeve and piston part despite the provided axial play.
  • the measure according to claim 5 ensures in a simple manner that an uncontrolled axial movement, which would also lead to an undefined position of the actuating handle, is nevertheless avoided while maintaining the desired axial play.
  • the embodiment according to claim 6 makes it possible to use a spring which is of particularly simple design and is therefore inexpensive to manufacture.
  • the measure according to claim 7 enables the spring to be assembled very easily.
  • FIG. 1 An office chair shown in FIG. 1 comprises a base frame 1 with a support column 2 which is connected to a seat support 4 receiving the upholstered seat 3.
  • a seat support 4 receiving the upholstered seat 3.
  • Fig. 1 only the lining 5 of the seat support 4 is shown.
  • the seat 3 is articulated on the one hand to the seat support 4 at its front end and on the other hand to the backrest support part 7.
  • the articulated connection between the seat support 4 and the backrest support part 7 is produced by a pivot pin 10 which passes through the side walls 11, 12 or 13, 14 of the backrest support part 7 or the seat support 4.
  • the backrest support part 7 and the seat support 4 are each U-shaped in cross-section, the U-bottoms 15, 16 pointing towards the top, that is to say towards the seat.
  • At the back At the end of the backrest support part 7 there is a releasable fastening device 17 for the backrest support column.
  • a gas spring 19 is provided to dampen the pivoting movement of the backrest support part 7 about the axis 6.
  • the end 20 of the gas spring 19 on the housing side is pivotally attached to a bolt 23 by means of an annular sleeve 22 fastened to the housing 21 of the gas spring 19, which bolt passes through the side walls 11, 12 of the backrest support part 7 and is fixed by means of the heads 24.
  • the piston 25 is connected to an annular sleeve 26 which performs a distance function and which is pivotably arranged on a bolt 27 which acts as a cross strut and passes through the side walls 13, 14 of the seat support 4 and is fixed there.
  • the bolt 23 is arranged in the region of the upper edge 28 of the backrest support part 7, while the bolt 27 is arranged in the region of the lower edge of the seat support 4 below the pivot bolt lo, the bolts 23, 27 being relative to one another such that the gas spring 19 is approximately an angle from 3o to 45 ° with the plane of the seat 3. This makes it possible to cushion the movement of the backrest 8 relative to the seat support 4 without the need to use additional counter-springs which bring about the back movement of the backrest.
  • the locking device 29 is arranged approximately parallel to the gas spring 19.
  • This comprises a piston part 3o and a sleeve part 31 shown partially broken open in FIG. 3.
  • Piston part 3o and sleeve part 31 are rectangular in cross section, the piston part 3o being longitudinally displaceable in the sleeve part 31 takes hold.
  • the piston part 3o has a bore 32, which is penetrated by the bolt 27.
  • a spacer sleeve 33 holds the piston part 3o at a preselected minimum distance from the annular sleeve 26 and thus from the gas spring 19.
  • the sleeve part 31 also has a bore 33 'through which the bolt 23 passes.
  • a U-shaped spring clip 35 with one leg 36 bears against the inside 34 of the sleeve part 31, the other leg 37 being supported on the inside of the side wall 13.
  • the outside 38 of the sleeve part 31 has a bore 39.
  • a threaded attachment 40 is welded, which is surrounded by a plastic spacer 41.
  • a threaded bolt 42 is screwed into the threaded attachment 4o, and an actuating handle 43 is fastened to the rear end thereof.
  • the threaded bolt 42 passes through a bore 44 in the side wall 12 and an approximately circular section-shaped recess 45 in the side wall 14 which allows an unimpeded pivoting movement.
  • the gas spring arrangement according to the invention works so that when the threaded bolt 42 is loosened, a free pivoting movement between the backrest support part 7 and the seat support 4 is possible, which is damped by the gas spring 19 so that no additional counter-spring is required to retrieve the backrest 8.
  • the threaded bolt 42 is screwed into the threaded attachment 4o, the front end 46 of the threaded bolt 42 presses against the piston part 3o and this against the inner wall of the sleeve part 31 and presses the piston part 3o there in such a way that despite only one low torque required to operate the handle 43 an absolutely reliable locking of the backrest adjustment is achieved.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP85110541A 1984-10-24 1985-08-22 Dispositif à ressort pneumatique, en particulier pour un support de dossier d'une chaise de bureau Expired EP0179224B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85110541T ATE42451T1 (de) 1984-10-24 1985-08-22 Gasfederanordnung, insbesondere fuer das rueckenlehnentrageteil an buerostuehlen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3438843 1984-10-24
DE3438843 1984-10-24
DE3509049 1985-03-14
DE19853509049 DE3509049A1 (de) 1984-10-24 1985-03-14 Gasfederanordnung, insbesondere fuer das rueckenlehnentrageteil an buerostuehlen

Publications (3)

Publication Number Publication Date
EP0179224A2 true EP0179224A2 (fr) 1986-04-30
EP0179224A3 EP0179224A3 (en) 1987-04-29
EP0179224B1 EP0179224B1 (fr) 1989-04-26

Family

ID=25825902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110541A Expired EP0179224B1 (fr) 1984-10-24 1985-08-22 Dispositif à ressort pneumatique, en particulier pour un support de dossier d'une chaise de bureau

Country Status (4)

Country Link
US (1) US4641886A (fr)
EP (1) EP0179224B1 (fr)
AT (1) ATE42451T1 (fr)
DE (2) DE3509049A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0777504B2 (ja) * 1987-11-17 1995-08-16 ファナック株式会社 高速インダクション型モータのロータ構造
US4832407A (en) * 1987-11-27 1989-05-23 Hector Serber Variable posture chair and method
US5486056A (en) * 1993-06-30 1996-01-23 Lord Corporation Adjustable, lockable damper
DE4324541A1 (de) * 1993-07-22 1995-01-26 Trendoffice Bueromoebel Stuhl, insbesondere Bürostuhl
US6007150A (en) * 1998-03-08 1999-12-28 Milsco Manufacturing Company Motorcycle seat with adjustable backrest
DE10200358A1 (de) * 2002-01-08 2003-07-17 Dauphin Friedrich W Gmbh Stuhl, insbesondere ein Bürostuhl
US7147285B2 (en) * 2004-01-20 2006-12-12 Tung Yu Oa Co., Ltd. Reclining apparatus for chair
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
NO339052B1 (no) * 2014-10-27 2016-11-07 Sykkylven Staal As Anordning ved sittemøbel
CN108903424A (zh) * 2018-07-13 2018-11-30 王铭 一种用于学生学习的多功能座椅

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834402A (en) * 1956-11-21 1958-05-13 Acrotherm Corp Seats of the reclining type
US3024067A (en) * 1959-10-12 1962-03-06 Brandoli Marino Seat having adjustable back
DE1554059A1 (de) * 1966-08-17 1969-11-20 Heinz Paulisch Fussgestell fuer Sitzmoebel
CH484659A (de) * 1968-06-14 1970-01-31 Mooser Alfred Verstellbarer Lehnsessel
US3758092A (en) * 1971-10-29 1973-09-11 Universal Oil Prod Co Position adjustment device with deformation type damper means
GB1430576A (en) * 1972-05-18 1976-03-31 Evertaut Ltd Adjustable back rests of chairs
FR2256631A5 (en) * 1973-12-27 1975-07-25 Boussereau Emile Armchair with inclinable back - has inclined rear legs extended upwards to guide arm rests
US3893730A (en) * 1974-08-05 1975-07-08 Lear Siegler Inc Seat positioner
DE2630820A1 (de) * 1976-07-08 1978-01-12 Westfael Eisen & Stahl Lagereinheit und arretiervorrichtung fuer sitz- und/oder liegemoebel mit verstellbaren teilen
FR2371169A2 (fr) * 1976-11-22 1978-06-16 Ceresuela Rene Siege
DE2733322C3 (de) * 1977-07-23 1980-08-07 Protoned B.V., Amsterdam Arbeitsstuhl
DE2820532A1 (de) * 1978-05-11 1979-11-15 Dauphin F W Buerositzmoebel Vorrichtung zum fuehren und feststellen von stuetzbuegeln von lehnen fuer stuehle, insbesondere buerodrehstuehlen
CH636252A5 (de) * 1978-10-20 1983-05-31 Syntech Sa Ergonomischer stuhl.

Also Published As

Publication number Publication date
ATE42451T1 (de) 1989-05-15
EP0179224A3 (en) 1987-04-29
EP0179224B1 (fr) 1989-04-26
DE3569659D1 (en) 1989-06-01
DE3509049A1 (de) 1986-04-24
US4641886A (en) 1987-02-10

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