EP0743034A1 - Chaise, notamment chaise de bureau - Google Patents

Chaise, notamment chaise de bureau Download PDF

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Publication number
EP0743034A1
EP0743034A1 EP96106331A EP96106331A EP0743034A1 EP 0743034 A1 EP0743034 A1 EP 0743034A1 EP 96106331 A EP96106331 A EP 96106331A EP 96106331 A EP96106331 A EP 96106331A EP 0743034 A1 EP0743034 A1 EP 0743034A1
Authority
EP
European Patent Office
Prior art keywords
backrest
chair
chair according
parts
recesses
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.)
Withdrawn
Application number
EP96106331A
Other languages
German (de)
English (en)
Inventor
Oliver Grözing
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.)
Wilhelm Link & Co KG Stahlrohrmobel GmbH
Original Assignee
Wilhelm Link & Co KG Stahlrohrmobel 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 Wilhelm Link & Co KG Stahlrohrmobel GmbH filed Critical Wilhelm Link & Co KG Stahlrohrmobel GmbH
Publication of EP0743034A1 publication Critical patent/EP0743034A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • A47C7/402—Support for the head or the back for the back adjustable in height

Definitions

  • the invention relates to a chair, in particular an office chair, with a backrest which is arranged on a backrest support and is adjustable in height.
  • Such chairs are known in particular from the office area in a variety of different configurations.
  • the padded backrest is usually slidably mounted on a back support or bracket.
  • the known height of the backrest is locked in the known chairs by clamping or snapping the backrest onto the backrest support.
  • a solution of a jamming or latching by means of an operating element for example in the form of a handwheel or a handle button, is necessary each time. After setting the desired height, this control element must be operated a second time to close the lock again.
  • the adjustment mechanisms for the backrest height that have been known since then are cumbersome, time-consuming and, in particular in the case of a clamping connection between the backrest and the carrier, also take up energy by means of a handwheel.
  • the present invention has for its object to provide a chair with a simple possibility of adjusting the backrest height.
  • the invention is achieved according to the invention by a chair of the type mentioned in the introduction in that the backrest is connected to a first part which is displaceably mounted on a second, fixed part arranged on or in the backrest support or formed by it, and with respect to a movement downward can be locked and released again by means of at least one latching or clamping body movable on a guideway formed between the two parts, the movement of the at least one latching or clamping body being able to be influenced by guide surfaces formed on the two parts.
  • the backrest height is adjusted simply by moving the backrest.
  • the backrest can therefore be adjusted while sitting.
  • the lack of any controls allows the back of the chair to be more self-contained and thus more visually appealing.
  • the backrest can be locked by means of two guide tracks which can be moved between the two parts and are symmetrical with respect to the central longitudinal axis of the backrest support.
  • the rollers can roll into the recesses in the guideway under the influence of gravity and wedge between the recesses and a second guide surface due to the weight of the backrest on the first part, while they roll into the next recesses when the backrest is raised.
  • the rollers can reach a second area of the guideways without a locking mechanism and allow the backrest to be lowered unhindered to a lower end stop, when it reaches them, under the influence of corresponding guide surfaces, they return to the area of the guideway provided with recesses. If the backrest is to be brought into a lower state than the currently set state, this can be done by raising the backrest to the upper end stop and then lowering it to the lower end stop and lifting it to the desired height.
  • the latching recesses can in principle be arranged both on the movable part and on the fixed part.
  • the first movable part can be hung in the core of the backrest.
  • the fixed part on the other hand, can expediently be fastened inside the backrest support.
  • the two parts can be made of plastic and the at least one locking or clamping body made of metal. The two parts can thus be manufactured extremely precisely in an injection molding process. The metal body can then easily roll and slide on the smooth plastic surfaces.
  • Fig. 1 shows half of an unpadded core of a backrest 10, which is height-adjustable on a backrest support 11, of which half is also shown, is attached.
  • the height adjustment takes place by means of an adjustment mechanism 12 which has two parts 13 and 14 which can be displaced relative to one another.
  • the part 14 is fixed and fastened in the interior of the backrest support 11.
  • the movable part 13 is suspended in the core of the backrest 10 and therefore takes it up or down with its displacement movement in part 14.
  • the adjustment mechanism 12 also consists of two rollers 15 as locking bodies (FIG. 8). 8
  • the movable part 13 has two mirror-symmetrical recesses 16 and a projecting web 17 with locking recesses 18 arranged on both sides.
  • the depressions 16 and the web 17 together with the inner surface 19 and a depression 20 of the fixed part 14 arranged therein form a guideway for the rollers 15, which are loosely inserted between the two parts 13 and 14.
  • FIGS. 2 to 7 now illustrate the functioning of the adjustment mechanism 12.
  • the adjustment mechanism 12 is shown in the highest possible locking position when the backrest is in the position.
  • the two cylinders 15 are clamped between the lowest latching recesses 18 on the upper movable part 13 and a guide surface 21 on the lower fixed part 14 and thereby prevent the part 13 from moving downward, as a result of which the backrest is also securely locked.
  • the backrest 10 is now to be set lower, the backrest 10 is first pulled further up to an end stop, as illustrated in FIGS. 3 and 4. When the backrest 10 is raised further according to FIG.
  • the rollers 15 can detach from the latching recesses 18 and roll outward due to the force of gravity along guide surfaces 22 on the movable part 13 in the depression 20 of the fixed part 14. If the backrest is at the upper end stop, as shown in FIG. 4, the cylinders 15 roll in outer recesses 23 in the guide surfaces 21 of the fixed part 14, as can also be seen from FIGS. 3 and 8.
  • the movable part 13 and thus the backrest 10 can now be pressed down unhindered by the rollers 15, the rollers 15 being protruded from the bulges 23 in the guide surface 21 of the fixed part 14 in an outer region 24 of the guide path, which are formed by the recesses 16 is formed in the movable part 13 to be transported inwards.
  • the rollers 15 of guide surfaces 25 on the movable part 13 are pressed out of the bulges 23 in the guide surfaces 21 of the fixed part 14 and roll into an area 26 of the recess 16 in the movable part 13, which from the central web 17 with the locking recesses 18th is limited, as shown in FIG. 6.
  • the backrest 10 can now be moved up to the desired height, as a result of which the rollers 15 move along the locking recesses 18 due to the force of gravity and are thereby guided through the guide surface 21 of the fixed part 14. If the backrest 10 is released in the desired position, the boundary surfaces of the latching recesses that are respectively pressed press the latching rollers 15 again against the guide surfaces 21, thereby preventing a downward movement of the backrest 10. To raise the backrest further, simply move it up the desired distance. However, if the backrest 10 is to be lowered again, then the steps shown in FIGS. 2 to 7 are, i.e. raising the backrest 10 to an upper end position and then lowering the backrest to the lower end position and then raising the backrest in the desired position to perform.
  • the backrest 10 can thus be brought into the desired position and locked there without actuating any external clamping or latching devices. Such an adjustment of the backrest 10 is easily possible even while sitting.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
EP96106331A 1995-05-13 1996-04-23 Chaise, notamment chaise de bureau Withdrawn EP0743034A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19517659 1995-05-13
DE1995117659 DE19517659A1 (de) 1995-05-13 1995-05-13 Stuhl, insbesondere Bürostuhl

Publications (1)

Publication Number Publication Date
EP0743034A1 true EP0743034A1 (fr) 1996-11-20

Family

ID=7761867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106331A Withdrawn EP0743034A1 (fr) 1995-05-13 1996-04-23 Chaise, notamment chaise de bureau

Country Status (2)

Country Link
EP (1) EP0743034A1 (fr)
DE (1) DE19517659A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1288164B1 (it) * 1996-09-06 1998-09-11 Imarc Srl Dispositivo di regolazione dell'altezza della spalliera dello schienale,in particolare in sedie da ufficio.
DE19812805A1 (de) * 1998-03-16 1999-09-30 Drabert Gmbh Bürostuhl mit einer höhenverstellbaren Rückenlehne
GB0704819D0 (en) * 2007-03-13 2007-04-18 Rge Engineering Company Adjustable locking mechanism for a chair
ITMI20110578A1 (it) * 2011-04-08 2012-10-09 Poliform S P A Dispositivo di regolazione in altezza di una porzione mobile di un elemento di arredamento ed elemento di arredamento con tale dispositivo
KR102086671B1 (ko) * 2019-05-02 2020-03-09 (주)제이와이 가구용 높이조절장치와 이를 적용한 책상 및 걸상

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749230A (en) * 1987-04-23 1988-06-07 Tornero Lino E Height adjusting device for chair backrest

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043592A (en) * 1975-09-05 1977-08-23 Steelcase Inc. Adjustable seat back mechanism
DE3527783A1 (de) * 1985-08-02 1987-02-12 Froescher August Gmbh Co Kg Verstelleinrichtung fuer die stufenweise arretierbare hoehenverstellung von rueckenlehnen an arbeitsstuehlen
US4639039A (en) * 1985-09-10 1987-01-27 Milsco Manufacturing Company Height adjustment mechanism for chair backrest
DE8905077U1 (de) * 1989-04-21 1989-06-15 Wiesner-Hager KG, Altheim Stuhl mit höhenverstellbarer Rückenlehne
DE4317609C2 (de) * 1993-05-27 2002-04-11 Dauphin Friedrich W Gmbh Stuhl, insbesondere Bürostuhl
DE9310220U1 (de) * 1993-07-09 1994-08-04 Froli Kunststoffe Heinrich Fromme, 33758 Schloß Holte-Stukenbrock Schiebeführung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4749230A (en) * 1987-04-23 1988-06-07 Tornero Lino E Height adjusting device for chair backrest

Also Published As

Publication number Publication date
DE19517659A1 (de) 1996-11-14

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