EP2735247B1 - Bürostuhl - Google Patents

Bürostuhl Download PDF

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Publication number
EP2735247B1
EP2735247B1 EP12462014.7A EP12462014A EP2735247B1 EP 2735247 B1 EP2735247 B1 EP 2735247B1 EP 12462014 A EP12462014 A EP 12462014A EP 2735247 B1 EP2735247 B1 EP 2735247B1
Authority
EP
European Patent Office
Prior art keywords
seat
hose
sections
office chair
chair
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
EP12462014.7A
Other languages
English (en)
French (fr)
Other versions
EP2735247A1 (de
Inventor
Ferenc Sustik
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.)
Antares Hungary Kft
Original Assignee
Antares Hungary Kft
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Publication date
Application filed by Antares Hungary Kft filed Critical Antares Hungary Kft
Priority to EP12462014.7A priority Critical patent/EP2735247B1/de
Publication of EP2735247A1 publication Critical patent/EP2735247A1/de
Application granted granted Critical
Publication of EP2735247B1 publication Critical patent/EP2735247B1/de
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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
    • A47C7/02—Seat parts
    • A47C7/024—Seat parts with double seats

Definitions

  • This invention relates to an office chair having a seat and a chair-post attached thereto, and the seat is provided by an adjustable seat surface.
  • Office chairs having a static, planar and unitary seat surface exert a very harmful influence on the testicles and strain the muscles of the ischium and thighs unequally escalating the risk of formation of piles.
  • These uncomfortable and harmful effects have been tried to eliminate by several solutions, first of all by cushions to be placed on the planar seat surface of the chair, having thicker portions beneath the ischium and thighs. These protruding areas of the cushion heighten the body above the seat surface, while contacting the rear side of the thighs. Consequently, the weight of the body bears exclusively on the rear side of the thighs while seated.
  • GB 694431 discloses a chair having spring actuated supporting surfaces for supporting thighs arcuated in the direction thereof. A gap is formed between supporting surfaces making impossible any contact between the testicles and the seat surface. A drawback of this solution is that the distance between supporting surfaces cannot be adjustable, and ischium contacts a continuous seat surface.
  • Patent application KR 20020044032 (A ) discloses an office chair having a seating surface formed by two seating panels situated beneath the thighs. A drawback of this solution is that the seat surfaces meet between the thighs and do not leave any clearance to obviate occurrence of contacts of other body parts and the seat surfaces.
  • DE 10 2005 033 052 A1 discloses an office chair according to the preamble of claim 1 of the present invention.
  • the object of the present invention is to provide an office chair for eliminating the drawbacks of the prior art solutions, that is a chair suitable for supporting the ischium and the thighs, independently on the body sizes in such a way that other body parts do not contact the seat surface, and users working in sitting position do not have to bring it to the working place, and the distance between the supporting surfaces is adjustable, the ischium does not contact a unitary surface, and the seat surfaces do not adjoin between the thighs but do not permit a contact with other body parts.
  • an office chair according to the invention having a seat and a chair-post attached thereto, and the seat is provided by an adjustable seat surface, and said adjustable seat surface is hinged to the seat to be movable about an axis, and an acute angle is provided between said axis and a centreline of the seat, and a section of a resilient hose to be filled by a medium is arranged between the seat and the seat surface.
  • Resilient hose is an endless hose having further sections between said sections, which are arranged beneath the lower side of the seat opposite the side provided by seat surfaces, and subsequent sections of the hose are preferably joined by arcuate sections received by slots formed in the seat.
  • Sections of the hose are wider than sections arranged on the lower side of the seat opposite the side provided by seat surfaces.
  • An acute angle between said axis and said centreline of the seat is between 0° - 40°, preferably between 5° - 25°, and more preferably between 15°- 20°.
  • Seat surfaces are connected to the seat by means of a detachable joint along said axis.
  • a detachable joint advantageously comprises a Velcroed joint, and the hose is filled by gas, or filled by a liquid material.
  • FIG. 1 side elevational view of an office chair 1 according to the invention provided by adjustable seat surfaces is shown.
  • the office chair 1 has a seat 2 connected to at least one chair-post 3.
  • Chair-post 3 is supported on the ground e.g. by means of wheels or rollers.
  • the office chair 1 can have more than one chair-post 3 and it can contact the ground without rollers, indeed.
  • a section 5a,5b of a resilient hose 5 to be filled by a medium through a valve 6 is arranged between each seat surface 4a,4b and the seat 2 .
  • the configuration of the resilient hose 5 is similar to that of a cycle tube being an endless hose 5, sections 5c,5d of which connecting the sections 5a,5b are arranged beneath the lower side of the seat 2 opposite the side having seat surfaces 4a,4b, so that arcuated sections 5e,5f,5g,5h connecting the sections 5a,5b and sections 5c,5d, respectively, are received in slots 2a,2b,2c,2d formed in the seat 2.
  • Fig. 2 shows the seat 2 of the office chair according to the invention in top side view, without seat surfaces 4a,4b and hose 5. It is clearly shown in the drawing that slots 2a,2b,2c,2d arranged for guiding the arcuated sections 5e,5f,5g,5h of the hose 5 are placed in the seat 2 to allow the sections 5a,5b of the hose 5 to be extended substantially parallelly to each other.
  • the term 'substantially parallelly' in this description means that sections 5a,5b do not cross each other, but delimit an angle therebetween, which is preferably between 0° and 40°.
  • Fig. 3 shows the seat 2 of the office chair 1 according to the invention, provided by a hose 5 in top side view, but without seat surfaces 4a,4b. It is shown in Fig. 3 that the sections 5a,5b of the hose 5 are preferably broadened in the direction of the centreline K of the seat 2, that is these sections 5a,5b are wider. Thus, the seat surfaces 4a,4b contact the respective sections 5a,5b of the hose 5 by greater surfaces in order to give a better support to the thighs.
  • Fig. 4 shows the seat 2 of the office chair 1 according to the invention in front view, provided by a hose 5 and seat surfaces 4a,4b.
  • Seat surfaces 4a,4b are hinged to the seat 2.
  • Hinged connection can be achieved e.g. along axes T1,T2, that is the seat surfaces (4a,4b) can rotate thereabout. Consequently, the tilt angle of the seat surfaces (4a,4b) can be adjusted by a quantity of gas or liquid to be injected into the hose 5.
  • the position of the axes T1,T2 in relation to the centreline K can be adjusted advantageously so that the axes T1,T2 are connected to the seat 2 by a releasable joint.
  • the distance of the seat surfaces 4a,4b and the width of a gap A extending therebetween can easily be adjusted or altered. According to our tests the forces affecting to this joints are so small, that a connection between the axes T1,T2 of the seat surfaces 4a,4b and the seat may be achieved by a simple Velcroed joint.
  • This joint can be formed by other solutions known in itself, or adjustability can also be omitted, if required, by using a fixed connection.
  • the planar seat surface of prior art chairs can be replaced by a resilient pair of wings, that is the seat surfaces 4a,4b bearing the load of the moving human body at two sides and the risks mentioned above are omitted by providing the middle positioned gap A.
  • Continuously adjustable axes T1,T2 enhances a control according to personal body sizes, thus the individual comfort preferences are tolerated in a large scale by the office chair 1.
  • Seating comfort is further improved by air-cushioning.
  • the office chair 1 forms two, left and right seat surfaces 4a,4b by each limb for supporting thighs instead of a single unitary seat surface as conventionally used.
  • a wing like, independent up and down motion of these two seat surfaces 4a,4b is enabled by pneumatic/hydraulic support of the seat surfaces 4a,4b achieved by means of the hose 5.
  • the continuous air-cushion arranged beneath the seat surfaces 4a,4b movable around respective axes T1,T2, that is the unitary inner chamber of the hose 5 provides a dynamic mobile support, so that loads can be transmitted to the body parts doing motions of different directions by a damped and balanced way, improving the seat comfort extremely.
  • Air pressure in the hose 5 can be adjusted in a known way by entering a medium by means of e.g. a pump or an inflator through the valve 6, so that the value of a force damping the motions as well as the tilt angle between the seat surfaces 4a,4b and the seat 2 can be adjusted.
  • the gap A extending between the seat surfaces 4a,4b eliminates above health risks, since the soft body parts are absolved from the load.
  • Seat surface 4a,4b of the office chair 1 according to the invention is completed by a further layer compared to the prior art chairs, that is two seat surfaces 4a,4b are arranged above the seat 2 conventionally provided by a cushion and upholstery, which surfaces 4a,4b can be provided by sponge stuffing and upholstery and connected to the seat 2 along axes T1,T2.
  • the hinged connection of the axes T1,T2 to the seat 2 can be formed even by elastic strips having medium thickness (3-4 mm), around which the seat surface 4a,4b can be swivelled.
  • the medium e.g. a gas or a liquid inside the hose 5 moves freely between the sections 5a,5b of the hose 5 arranged between the seat 2 and the seat surfaces 4a,4b.
  • seat surfaces 4a,4b tend to be laid on the seat 2.
  • a pressure of the medium entering the hose 5 results in rising of the seat surfaces 4a,4b and creating a trough like surface having higher portions at its edges and lower portions at its centre, that results in an ergonomic and stable seating.
  • the hardness of the 'air cushioned seat' as well as the tilt of the seat surfaces 4a,4b can be adjusted by means of the pressure of the medium.
  • the advantage of the office chair according to the invention compared to the prior art office chairs is that it is suitable for supporting the ischium and the thighs, independently on the body sizes in such a way that other body parts do not contact the seat surface, and the distance between the seat surfaces 4a,4b and their position, their tilt around the axes T1,T2 are adjustable, the ischium does not contact a unitary surface, and the seat surfaces 4a,4b do not adjoin between the thighs and do not permit a contact with other body parts.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)

Claims (8)

  1. Bürostuhl (1) mit einem Sitz (2) und einem daran befestigten Ständer (3), und der Sitz (2) mit einer einstellbaren Sitzfläche (4a, 4b) versehen ist, die genannte einstellbare Sitzfläche (4a , 4b) gelenkig mit dem Sitz (2) verbunden ist, um um eine Achse (T1, T2) beweglich zu sein, und ein Spitzwinkel zwischen der genannten Achse (T1, T2) und einer Mittellinie (K) des Sitzes (2) ausgebildet ist, und Abschnitte (5a, 5b) eines mit einem Medium zu befüllenden elastischen Schlauches (5) zwischen dem Sitz (2) und der Sitzfläche (4a, 4b) angeordnet sind, wobei der genannte elastische Schlauch (5) ein endloser Schlauch ist, dadurch gekennzeichnet, dass der genannte elastische Schlauch (5) über weitere Abschnitte (5c, 5d) verfügt, die zwischen den Abschnitten (5a, 5b), die unterhalb der unteren Seite des Sitzes (2), gegenüber der mit den Sitzflächen (4a, 4b) versehenen Seite angeordnet sind.
  2. Bürostuhl (1) nach Anspruch 1, dadurch gekennzeichnet, dass die nachfolgenden Abschnitte (5a, 5b, 5c, 5d) des Schlauches (5) durch bogenförmige Abschnitte (5e, 5f, 5g, 5h) verbunden sind, die durch in dem Sitz (2) ausgebildete Schlitze (2a, 2b, 2c, 2d) aufgenommen sind.
  3. Bürostuhl (1) nach Anspruch 2, dadurch gekennzeichnet, dass genannte Abschnitte (5a, 5b) des Schlauches (5) breiter sind als die Abschnitte (5c, 5d), die auf der Unterseite des Sitzes (2) gegenüber der durch die Sitzflächen (4a, 4b) gebildeten Seite angeordnet sind.
  4. Bürostuhl (1) nach Anspruch 3, dadurch gekennzeichnet, dass der Spitzwinkel (α) zwischen der Achse (T1, T2) und die Mittellinie (K) des Sitzes (2) einen Wert von zwischen 0° - 40°, vorzugsweise zwischen 5° - 25° und besonders bevorzugt zwischen 15° - 20° aufweist.
  5. Bürostuhl (1) nach Anspruch 4, dadurch gekennzeichnet, dass die Sitzflächen (4a, 4b) mit dem Sitz (2) mittels einer lösbaren Verbindung entlang der Achse (T1, T2) verbunden sind.
  6. Bürostuhl (1) nach Anspruch 5, dass die lösbare Verbindung einen Klettverschluss enthält.
  7. Bürostuhl (1) nach Anspruch 6, dadurch gekennzeichnet, dass der Schlauch (5) mit Gas gefüllt ist.
  8. Bürostuhl (1) nach Anspruch 4, dass der Schlauch (5) mit Flüssigkeit gefüllt ist.
EP12462014.7A 2012-11-23 2012-11-23 Bürostuhl Active EP2735247B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12462014.7A EP2735247B1 (de) 2012-11-23 2012-11-23 Bürostuhl

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12462014.7A EP2735247B1 (de) 2012-11-23 2012-11-23 Bürostuhl

Publications (2)

Publication Number Publication Date
EP2735247A1 EP2735247A1 (de) 2014-05-28
EP2735247B1 true EP2735247B1 (de) 2015-07-15

Family

ID=47520826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12462014.7A Active EP2735247B1 (de) 2012-11-23 2012-11-23 Bürostuhl

Country Status (1)

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EP (1) EP2735247B1 (de)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2156629A (en) * 1937-12-11 1939-05-02 Hutchison Miller Reese Seat
GB694431A (en) 1950-01-16 1953-07-22 Harris & Tyler Ltd Improvements in or relating to seats or the like
KR20020044032A (ko) 2000-12-05 2002-06-14 오경태 자유백
DE10117602C1 (de) 2001-04-07 2002-10-24 Gernot M Steifensand Bürostuhlsatz
DE102005033052B4 (de) * 2005-07-15 2009-11-12 Topstar Gmbh Sitzmöbel
KR100654918B1 (ko) * 2005-10-14 2006-12-06 김선환 골반 보호용 의자
US8439442B2 (en) * 2006-09-29 2013-05-14 Corewerks, Inc. Method and apparatus to enhance proprioception and core health of the human body
WO2011120219A1 (zh) 2010-03-30 2011-10-06 孙亚凯 充气坐垫

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Publication number Publication date
EP2735247A1 (de) 2014-05-28

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