EP3205236B1 - Dossier de siège de bureau - Google Patents

Dossier de siège de bureau Download PDF

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Publication number
EP3205236B1
EP3205236B1 EP17152451.5A EP17152451A EP3205236B1 EP 3205236 B1 EP3205236 B1 EP 3205236B1 EP 17152451 A EP17152451 A EP 17152451A EP 3205236 B1 EP3205236 B1 EP 3205236B1
Authority
EP
European Patent Office
Prior art keywords
backrest
openings
support structure
shell element
bracing elements
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
EP17152451.5A
Other languages
German (de)
English (en)
Other versions
EP3205236A1 (fr
Inventor
Joachim BRÜSKE
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.)
Interstuhl Bueromoebel GmbH and Co KG
Original Assignee
Interstuhl Bueromoebel GmbH and Co KG
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 Interstuhl Bueromoebel GmbH and Co KG filed Critical Interstuhl Bueromoebel GmbH and Co KG
Priority to PL17152451T priority Critical patent/PL3205236T3/pl
Publication of EP3205236A1 publication Critical patent/EP3205236A1/fr
Application granted granted Critical
Publication of EP3205236B1 publication Critical patent/EP3205236B1/fr
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
    • 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
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/445—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs
    • 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
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • 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
    • A47C7/002—Chair or stool bases
    • A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs
    • 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
    • A47C7/002—Chair or stool bases
    • A47C7/006—Chair or stool bases with castors
    • 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
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means

Definitions

  • the invention relates to a backrest for an office chair with a support structure to which a backrest shell element can be fastened.
  • the US 2007/0108819 A1 discloses a chair with a backrest support that is elastically deformable.
  • a seat back shell of a chair which has openings spaced from webs.
  • an office chair which has a backrest and a seat.
  • the seat is operatively connected to the backrest.
  • the office chair has a connecting element.
  • the connecting element is connected to the backrest and the seat surface and designed to resiliently counteract a pivoting movement of the backrest.
  • the connecting element is designed to pivot the seat surface at a predetermined ratio to the pivoting movement of the backrest, so that the backrest and the seat surface open each other with an opening angle when the backrest is pivoted.
  • Such an office chair is particularly suitable for assisting a user in changing his sitting position from time to time, so that back pain is avoided as much as possible.
  • Object of the present invention is to develop the office chair to the effect that not only the interaction of seat and backrest a user to "moving seats” stimulates, but that there is also a further flexibility in terms of taking different seating positions.
  • This object is achieved according to the invention by a backrest with the features of claim 1.
  • This configuration of the support structure of the backrest results in a flexibility of the backrest so that it adapts to movements and seat position changes of a user. Nevertheless, the back of a user is optimally supported.
  • the support structure is made of plastic. Already due to the material property results in a certain flexibility and elasticity.
  • the support structure has connection points for punctiform connection with the backrest shell element.
  • the support structure may have openings into which connection elements of the backrest shell element can be inserted.
  • the connection points can therefore be designed so that a plug connection is possible. If the backrest shell element is only selectively connected to the support structure, even slight relative movements between the backrest shell element and the support structure are permitted, which brings about a further flexibility of the backrest as a whole.
  • the struts each have an at least partially elastic backrest legs.
  • the struts can be connected to a base support. By the backrest leg further elasticity of the backrest can be effected.
  • the backrest leg is C-shaped. This results in a resilient configuration of the backrest leg.
  • the struts are connected to a connectable to a pedestal base support.
  • the base support may represent one of the compounds in an end region of the struts.
  • a seat stay can be arranged on or connected to the base support.
  • the struts may be aligned parallel to one another in a first section.
  • the struts may be aligned in a region of the upper back parallel to each other.
  • a diaphragm in particular made of elastic plastic, can be provided between the struts.
  • the spacing of the struts may increase in a second section, in particular towards a base support.
  • the distance can increase continuously. Alternatively, it is conceivable that the distance increases in steps.
  • the struts in this area can be made more stable in order to prevent the backrest from kinking in the region of the struts.
  • the backrest has a backrest shell element connected to the support structure.
  • the back shell element can thereby be designed so that this provides further flexibility and adapts to movements of a user.
  • the backrest shell element can be attached to the support structure.
  • the backrest shell element has a multiplicity of passage openings with webs arranged therebetween. This ensures that the backrest shell element is not rigid, but has a certain flexibility and elasticity. In addition, can be saved in this way material and weight.
  • passage openings having a first and a second, larger height to be arranged alternately in the vertical direction. It thus alternate through holes with different heights. By choosing the height of the through openings, the flexibility and elasticity of the backrest shell element can be adjusted.
  • the backrest shell element has a central vertical row of passage openings, wherein each passage opening of the central vertical row of passage openings is assigned to the right and left a narrower passage opening.
  • each passage opening of the central vertical row of passage openings is assigned to the right and left a narrower passage opening.
  • the passage openings of the central row of passage openings are wider from top to bottom. This causes the backrest shell element in a lower region, in particular in the region of a user's lumbar spine, has greater flexibility than in an area located above it.
  • slot-like openings can extend almost over the entire width of the backrest shell element. However, it can also be provided that a plurality of slot-like openings are provided in the horizontal direction. Due to the arrangement and length of the slot-like openings, a further adjustment of the properties of the backrest shell element can take place.
  • the backrest shell element can be constructed skeleton-like, in particular can have a plurality of webs, which are spaced from each other by openings.
  • backrest shell element elastic fastening straps can be provided for the particular releasable attachment to the support structure.
  • fastening straps By fastening straps, the selective connection of the backrest shell element can be made to the support structure. Because the fastening straps are preferably elastic, the backrest shell element is movable in a limited manner relative to the support structure.
  • the scope of the invention also includes an office chair with a backrest according to the invention.
  • the Fig. 1 shows an exploded view of an office chair 1.
  • the office chair 1 has a five-armed base frame 2 with rollers 3.
  • a base support 5 can be attached.
  • a support structure 6 of a backrest 7 extends upwards.
  • the support structure 6 comprises two struts 8, 9, which are connected to one another by the connecting web 10 at an upper end of the support structure 6 and by the base support 5 at a lower end of the support structure 6.
  • Between the struts 8, 9 is a gap 11, which may be free, but can also be blinded by a plastic plate.
  • the struts 8, 9 extend at least approximately parallel.
  • the distance between the struts 8, 9 is larger.
  • the support structure 6 widens toward the base support 5. Also, the struts 8, 9 become wider towards a kink area 14. In a lower region, the support structure 6 at least partially elastic back legs 15, 16, which are seen in section at least in a region 17 C-shaped.
  • the support structure 6 has along the struts 8, 9 receptacles 18 for receiving fastening tabs of a backrest shell element 20.
  • the backrest shell element 20 can thus be connected in a punctiform manner to the support structure 6.
  • the support structure 6 is preferably made of plastic and thus has a certain elasticity solely on account of the material properties.
  • the struts 8, 9 can be moved within certain limits relative to each other.
  • a c-shaped seat leg 21 is further arranged, on which a seat, not shown, can be fixed.
  • the backrest legs 15, 16 have obliquely upwards.
  • the Fig. 2 shows the office chair 1 in a front view, in which case a seat 22 can be seen.
  • the seat back shell member 20 is formed in an upper portion 23 having a nearly constant width. In a lower region 24, the width increases.
  • the seatback shell member 20 has openings 25 at a first height and slot-like openings 26 at a second height. The height of the slot-like openings 26 is less than the height of the openings 25.
  • the backrest shell element 20 has a central row 27 of openings 28.
  • the openings 28 are from the top to looked wider below.
  • fastening tabs 29, 30 for fastening the backrest shell element to the support structure 6 (FIG. Fig. 1 ) intended.
  • the fastening tabs 29, 30 are elastic and can be inserted into the openings 18. Both right and left of the openings 28 of the central row (27) of openings 28 narrower openings 25, 31 are provided. The openings 25, 31 in the edge region of the backrest shell element 20 are thus narrower.
  • the slot-like openings 26 may be spaced apart by webs. However, it can also be provided over almost the entire width of the backrest shell element 20 through slots 32.
  • the backrest shell element 20 is preferably made of plastic.
  • the alternate arrangement of openings 25, 26, 28, 31 and webs 33 creates a skeletal structure that is particularly flexible.
  • the Fig. 3 shows a side view of the office chair 1.
  • the backrest shell element 20 is connected to the support structure 6.
  • the backrest shell element 20 is located above the bending region 14, on which sections 41, 42 of the struts 8, 9 occupy an angle of approximately 90 ° to one another.
  • the Fig. 4 shows a section of the backrest 50, wherein the support structure 6 is shown in a section.
  • the tabs 29, 30 are inserted into the openings 18 of the support structure 6, so that at several points a selective connection of the backrest shell element 20 results with the support structure 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)

Claims (12)

  1. Dossier (7) pour un siège de bureau (1), comportant une structure porteuse (6) sur laquelle peut être fixé un élément formant coque de dossier (20), la structure porteuse (6) comprenant deux entretoises (8, 9) qui sont reliées l'une à l'autre dans leurs zones d'extrémité supérieures et inférieures et qui sont écartées l'une de l'autre entre les zones d'extrémité, dans lequel
    les entretoises (8, 9) sont mobiles l'une par rapport à l'autre au moins dans des parties,
    le dossier (7) comprend un élément formant coque de dossier (20) relié à la structure porteuse (6),
    caractérisé en ce que
    l'élément formant coque de dossier (20) présente une multitude d'ouvertures traversantes (25, 28, 31, 32) avec des barrettes (33) interposées,
    il est prévu une rangée verticale centrale (27) d'ouvertures traversantes (28), et
    à chaque ouverture traversante (28) de la rangée verticale centrale (27) d'ouvertures traversantes (28) est associée, à droite et à gauche, une ouverture traversante plus étroite (25, 31).
  2. Dossier selon la revendication 1, caractérisé en ce que la structure porteuse (6) est réalisée en matière plastique.
  3. Dossier selon l'une des revendications précédentes, caractérisé en ce que la structure porteuse (6) présente des points de liaison pour la liaison ponctuelle avec l'élément formant coque de dossier.
  4. Dossier selon l'une des revendications précédentes, caractérisé en ce que les entretoises (8, 9) présentent chacune une branche de dossier (15, 16) au moins localement élastique.
  5. Dossier selon l'une des revendications précédentes, caractérisé en ce que les entretoises (8, 9) sont reliées à un support de base (5) susceptible d'être relié à un piétement (2).
  6. Dossier selon l'une des revendications précédentes, caractérisé en ce que les entretoises (8, 9) sont orientées parallèlement l'une à l'autre dans une première partie (12).
  7. Dossier selon l'une des revendications précédentes, caractérisé en ce que la distance des entretoises (8, 9) augmente dans une seconde partie (13), en particulier vers un support de base (5).
  8. Dossier selon l'une des revendications précédentes, caractérisé en ce que des ouvertures traversantes (25, 26) présentant une première et une seconde hauteur plus importante sont disposées en alternance en direction verticale.
  9. Dossier selon l'une des revendications précédentes, caractérisé en ce que les ouvertures traversantes (28) de la rangée centrale (27) d'ouvertures traversantes (28) deviennent plus larges depuis le haut vers le bas.
  10. Dossier selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu des ouvertures en forme de fentes (26, 32).
  11. Dossier selon l'une des revendications précédentes, caractérisé en ce que des pattes de fixation élastiques (29, 30) sont prévues sur l'élément formant coque de dossier (20) en particulier pour la fixation détachable sur la structure porteuse (6).
  12. Siège de bureau comportant un dossier (7) selon l'une des revendications précédentes.
EP17152451.5A 2016-02-15 2017-01-20 Dossier de siège de bureau Active EP3205236B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17152451T PL3205236T3 (pl) 2016-02-15 2017-01-20 Oparcie dla pleców w fotelu biurowym

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016102556.9A DE102016102556A1 (de) 2016-02-15 2016-02-15 Rückenlehne für einen Bürostuhl

Publications (2)

Publication Number Publication Date
EP3205236A1 EP3205236A1 (fr) 2017-08-16
EP3205236B1 true EP3205236B1 (fr) 2018-05-09

Family

ID=57860764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17152451.5A Active EP3205236B1 (fr) 2016-02-15 2017-01-20 Dossier de siège de bureau

Country Status (8)

Country Link
US (1) US10016061B2 (fr)
EP (1) EP3205236B1 (fr)
CN (1) CN107080384A (fr)
DE (1) DE102016102556A1 (fr)
DK (1) DK3205236T3 (fr)
ES (1) ES2681882T3 (fr)
PL (1) PL3205236T3 (fr)
TR (1) TR201807283T4 (fr)

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Also Published As

Publication number Publication date
US10016061B2 (en) 2018-07-10
DK3205236T3 (en) 2018-08-06
EP3205236A1 (fr) 2017-08-16
CN107080384A (zh) 2017-08-22
ES2681882T3 (es) 2018-09-17
PL3205236T3 (pl) 2018-08-31
DE102016102556A1 (de) 2017-08-17
US20170231395A1 (en) 2017-08-17
TR201807283T4 (tr) 2018-06-21

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