EP0176816B1 - Chaise à siège et support de dossier inclinable vers l'arrière - Google Patents

Chaise à siège et support de dossier inclinable vers l'arrière Download PDF

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Publication number
EP0176816B1
EP0176816B1 EP85111372A EP85111372A EP0176816B1 EP 0176816 B1 EP0176816 B1 EP 0176816B1 EP 85111372 A EP85111372 A EP 85111372A EP 85111372 A EP85111372 A EP 85111372A EP 0176816 B1 EP0176816 B1 EP 0176816B1
Authority
EP
European Patent Office
Prior art keywords
carrier
backrest
seat
pivot
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.)
Expired
Application number
EP85111372A
Other languages
German (de)
English (en)
Other versions
EP0176816A1 (fr
Inventor
Hermann Locher
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.)
Giroflex Entwicklungs AG
Original Assignee
Giroflex Entwicklungs AG
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 Giroflex Entwicklungs AG filed Critical Giroflex Entwicklungs AG
Priority to AT85111372T priority Critical patent/ATE46608T1/de
Priority to EP89102231A priority patent/EP0322400B1/fr
Publication of EP0176816A1 publication Critical patent/EP0176816A1/fr
Application granted granted Critical
Publication of EP0176816B1 publication Critical patent/EP0176816B1/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
    • A47C1/03261—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
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting 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
    • A47C7/36—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
    • A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil 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
    • A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs
    • A47C7/444—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs of torsion type
    • 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
    • A47C7/446—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with fluid springs

Definitions

  • the invention relates to a chair with a seat and backrest support which can be tilted backwards, the seat support being arranged on the knee-side seat end with a swivel joint on a support part so as to be pivotable about a horizontal axis and on the backrest-side seat end being pivotably connected to the backrest support by a swivel joint with a horizontal axis.
  • the latter is pivotally pivoted about a horizontal axis at a distance from the swivel joint of the seat support and can be inclined at a greater angle than the inclination angle of the seat support when the seat support is tilted backwards, a backrest guided on the backrest support being lowerable in accordance with the inclination of the seat support, and a chair frame suitable for such a chair.
  • the seat support and the backrest support are pivoted at one end to a support part at a distance from each around a horizontal axis, the seat part being connected at its other end to the backrest support by a swivel joint.
  • the backrest support tilts at a greater angle than the seat part, one of the swivel joints additionally being designed as a sliding joint or an additional connecting bracket on one of the swivel joints.
  • the greater inclination of the backrest support causes the known pull-out effect, i.e. the clothing of the chair user is pulled up when tilted backwards.
  • the automatic displacement of the backrest which takes place as a function of the backward inclination of the seat support, is achieved by means of a linkage which is articulated on the swivel joint of the backrest support and is coupled to the end of the backrest support on the support part.
  • This linkage requires a relatively large amount of space and is not only space-consuming but also costly, since it extends under the seat to the knee-side seat end.
  • the reduction or elimination of the pull-out effect represents a noticeable increase in comfort, which is why one does not want to do without the sliding backrest.
  • This object is achieved according to the invention in that the displaceable backrest is coupled to the back-side end of the seat part via a link chain. It is thereby achieved that the space under the seat of parts remains free for the adjustment of the backrest and the links of the link chain can be made small because of the small distance between the coupling point and the backrest.
  • the invention also includes chair frames according to the dependent claims 4 to 10.
  • the chair shown in Figure 1 is supported on a support part 1, which usually represents part of a mostly mobile, only indicated foot frame 2.
  • a seat support 3 and a backrest part 4 are mounted on the support part 1, the seat support 3 having its knee-side end being pivotably mounted on the support part 1 by means of a swivel joint 5.
  • the backrest part 4 is articulated by means of a swivel joint 6 to a lever 7, which in turn is pivotably mounted in the support part 1 by means of a further swivel joint 8 at a distance from the swivel joint of the seat support 3.
  • the seat support 3 and the backrest part 4 are rotatably connected to one another on the backrest side by means of a swivel joint 9.
  • the lever 7 is designed as a cantilever arm 10, at the free end of which one end of a spring member 11 is supported.
  • the other end of the spring member 11 is supported on the support part 1, wherein it is articulated on the knee-side swivel 5 of the seat support 3 or is supported on the support part 1 in the vicinity of this swivel joint. If the backrest part 4 moves by a certain amount, this becomes at the free end of the arm 10 enlarged so that the spring travel of the spring member 11 is increased accordingly.
  • the seat support 3 protrudes with an extension 12 beyond the swivel joint 9 on the backrest.
  • a link chain 15 is coupled by means of a swivel joint 16, which is composed of three links 17, 18, 19 which are articulated to one another.
  • the link 19 is connected at its free end to a slide 20 which is guided on the backrest support 4 and carries a backrest 21, shown schematically by a broken line.
  • the seat support 3 moves around the knee-side swivel joint 5 in the direction of arrow a and the backrest support 4 around the backrest-side swivel joint 9 in the arrow direction A, the inclination of the backrest support 4 being greater than that of the seat support 3.
  • the link chain 15 is adjusted so that the slider 20 moves down with the backrest 21.
  • the middle link 18 is pivotally mounted in the backrest support 4 by means of a swivel joint 22.
  • the link 18 thus forms a two-armed lever, by means of which the inclination of the link 17 is reduced when the backrest support 4 is tilted back and thus causes the slide 20 to move downward.
  • the link 19 only serves to prevent the slide 20 from jamming on its guide.
  • one arm of the lever 7 connects the backrest part 4 to the support part 1.
  • the arm located between the swivel joints 6, 8 is accordingly a tab through which the backward inclination of the two supports 3, 4 is free of jamming and without formation of a Swivel joint is made possible as an additional sliding joint.
  • Fig. 1 the space-saving and simple solution of the displacement of the slide 20 with the backrest 21 can be seen.
  • the space below the seat support 3 can be used for the arrangement of other parts, the effect of the spring member 11 also being increased by using the lever 7, since this translates the movement of the backrest support 4.
  • Fig. 2-4 show that additional spring means or linkages can be used for their actuation, as will be shown below.
  • the seat support 3 mounted in the knee-side swivel joint 5 is connected on the backrest side with a bracket 25 and two swivel joints 9, 13 to the backrest support 4, with which the backrest support 4 can be pivotably mounted on the support part 1 by means of the swivel joint 8 without a sliding joint having to be provided.
  • the backrest support 4 here has an arm 23 projecting from the swivel joint 8, on the free end of which the spring member 11 is supported. Further spring means are attached on the backrest side, see a tension spring 26 which is fastened on the one hand to the backrest support 4 and on the other hand to the supporting part 1. If further spring means are required, it is also possible to arrange a torsion spring in the knee-side swivel joint 5 of the seat support 3 and in the swivel joint 8.
  • the spring means always have the task of moving the chair into the normal or working position when it is relieved. It is desirable to be able to actuate the spring means 11 arranged in the knee area, in particular a gas pressure spring, so that the chair can be in a certain position, e.g. B. to block in the reclined position. Here, the actuation can be made easily accessible due to the location of the spring means.
  • one end of the spring means 11 is supported on a pair of tabs 30, 31, of which the tab 30 is supported on the backrest-side swivel 9 of the two supports 3, 4 and the tab 31 on the support part 1.
  • the spring travel of the spring means 11 can be varied.
  • a tension spring 27 is supported on the one hand on the pair of tabs 30, 31 and on the other hand on the support part 1.
  • the two supports 3, 4 are connected to one another on the backrest side by the tab 25 and are pivotably mounted on the supporting part 1 by the swivel joints 5, 8.
  • a pair of tabs 32, 33 is provided, of which the tab 32 is pivotally mounted on the pivot 9 of the seat support 3 on the backrest and the tab 33 on the pivot 8 of the back support 4 in the seat part 1.
  • the chair and the chair frames described have a relatively small volume of rod parts under the seat support.
  • the "duck belly" inevitable in other constructions because of the arrangement Bulky and bulky rod parts under the seat support can be avoided with the present construction.

Claims (10)

1. Chaise comportant un support de siège (3) inclinable vers l'arrière et un support de dossier (4), le support de siège, à l'extrémité du siège côté genoux, étant monté pivotant autour d'un axe horizontal, sur un élément de support (1 ), par une articulation tournante, et à l'extrémité du siège côté dossier assemblé pivotant au support de dossier, par une articulation (9) à axe de pivotement horizontal, lequel support de dossier s'articule sur l'élément de support, à une certaine distance de l'articulation tournante côté genoux du support de siège, de manière à pivoter autour d'un axe horizontal, et peut s'incliner, lorsque l'on incline vers l'arrière le support de siège, d'un angle supérieur à l'angle d'inclinaison de ce dernier, un dossier (21) guidé sur le support de dossier, pouvant être abaissé suivant l'angle du support de siège, caractérisée en ce que le dossier (21) coulissant est accouplé à l'extrémité côté dossier du support de siège (3), par une chaîne à maillons (15).
2. Chaise selon la revendication 1, caractérisée en ce qu'une articulation tournante (22) est placée sur le support de dossier (4), entre le dossier (21) et l'extrémité côté dossier du support de siège (3), laquelle articulation est montée tournante sur l'un des maillons (18) de la chaîne à maillons (15).
3. Chaise selon la revendication 2, caractérisée en ce que la chaîne à maillons (15) est constituée de trois maillons (17, 18, 19) dont le maillon central (18) est un maillon à levier à deux bras, qui avec son axe de pivotement est monté pivotant dans l'articulation tournante (22) du support de dossier (4).
4. Bâti d'une chaise selon l'une des revendications 1 à 3, comportant un élément de support (1) sur lequel s'articulent, par des articulations tournantes (5, 8) un support de siège (3) inclinable vers l'arrière, et un support de dossier (4) accouplé au support de siège, par des articulations d'accouplement (9, 13), un bras en porte-à-faux (23) étant associé à l'articulation tournante (8) du support de dossier (4), bras à l'extrémité libre duquel prend appui un organe à ressort (11), caractérisée en ce que le support de siège (3) est relié, par l'articulation d'accouplement, à une jumelle (25) qui s'articule pivotante sur le support de dossier (4) par l'autre articulation d'accouplement (13).
5. Bâti de chaise d'une chaise selon les revendications 1 à 3, comportant un élément de support (1) sur lequel sont placés, par des articulations tournantes (5, 8) un support de siège (3) inclinable vers l'arrière et un support de dossier (4) accouplé au support de siège, par des articulations d'accouplement (9), un bras en porte-à-faux (10, 11) étant associé à l'articulation tournante (8) du support de siège (4), bras à l'extrémité libre duquel prend appui un organe à ressort (11), caractérisé en ce que le support de dossier (4) s'articule sur le bras en porte-à-faux (10), sur une articulation tournante (6), par un bras de levier plus court que celui de l'organe à ressort (11) qui s'articule à l'extrémité libre du bras.
6. Bâti de chaise d'une chaise selon l'une des revendications 1 à 3, comportant un élément de support sur lequel s'articulent, par des articulations tournantes (5, 8) un support de siège (3) inclinable vers l'arrière et un support de dossier (4) accouplé au support de siège, un bras en porte-à-faux (33) étant associé à l'articulation tournante (8) du support de siège (4), bras à l'extrémité libre duquel prend appui un organe à ressort (11), caractérisé en ce que l'organe à ressort (11), prenant appui sur l'élément de support (1) par l'articulation tournante (5) côté genoux, pend appui à l'autre extrémité, contre les extrémités de deux jumelles (30, 31, 32, 33) reliées entre elles, une jumelle au moins (30, 32, 33) étant reliée à la partie de siège (3) ou à la partie de dossier (4).
7. Bâti de chaise selon la revendication 6, caractérisé en ce que l'une des jumelles (30) s'articule sur l'articulation d'accouplement (9) côté dossier, commune à la partie de siège (3) et à la partie de dossier (4), tandis que l'autre jumelle (31) est montée pivotante sur l'élément de support (1
8. Bâti de chaise selon la revendication 6, caractérisée en ce que sur les deux jumelles (32, 33), la jumelle (32) est montée tournante sur l'articulation d'accouplement (9) côté dossier du support de siège (3) et l'autre jumelle (33) est montée tournante dans l'élément de support (1), sur l'articulation tournante (8) du support de dossier (4).
9. Bâti de chaise selon l'une des revendications 4 à 8, caractérisé en ce que les articulations tournantes (5, 8) disposées dans l'élément de support (1), sont équipées d'un ressort de torsion qui agit en replaçant le bâti de chaise dans la position initiale, à partir de la position inclinée vers l'arrière.
10. Bâti de chaise selon l'une des revendications 4 à 9, caractérisé en ce que sous la partie de siège (3), sont placés d'autres organes à ressort (26, 27) dont une extremité est fixée sur l'élément de support (1), et l'autre extrémité sur l'un des supports (3, 4) ou sur la paire de jumelles (30, 31 ; 32,33).
EP85111372A 1984-10-03 1985-09-09 Chaise à siège et support de dossier inclinable vers l'arrière Expired EP0176816B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT85111372T ATE46608T1 (de) 1984-10-03 1985-09-09 Stuhl mit rueckwaerts neigbarem sitz- und rueckenlehnentraeger.
EP89102231A EP0322400B1 (fr) 1984-10-03 1985-09-09 Cadre de chaise avec support de siège et de dossier inclinable vers l'arrière

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4760/84 1984-10-03
CH4760/84A CH666171A5 (de) 1984-10-03 1984-10-03 Stuhl mit rueckwaerts neigbarem sitz- und rueckenlehnentraeger.

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP89102231.1 Division-Into 1989-02-09

Publications (2)

Publication Number Publication Date
EP0176816A1 EP0176816A1 (fr) 1986-04-09
EP0176816B1 true EP0176816B1 (fr) 1989-09-27

Family

ID=4282037

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89102231A Expired - Lifetime EP0322400B1 (fr) 1984-10-03 1985-09-09 Cadre de chaise avec support de siège et de dossier inclinable vers l'arrière
EP85111372A Expired EP0176816B1 (fr) 1984-10-03 1985-09-09 Chaise à siège et support de dossier inclinable vers l'arrière

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP89102231A Expired - Lifetime EP0322400B1 (fr) 1984-10-03 1985-09-09 Cadre de chaise avec support de siège et de dossier inclinable vers l'arrière

Country Status (14)

Country Link
US (1) US4684173A (fr)
EP (2) EP0322400B1 (fr)
JP (1) JPS6187505A (fr)
AT (2) ATE46608T1 (fr)
AU (1) AU577143B2 (fr)
BR (1) BR8504774A (fr)
CA (1) CA1252036A (fr)
CH (1) CH666171A5 (fr)
DE (2) DE3573209D1 (fr)
DK (1) DK164630C (fr)
FI (1) FI81245C (fr)
NO (2) NO166213C (fr)
PT (1) PT81046B (fr)
ZA (1) ZA857307B (fr)

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Also Published As

Publication number Publication date
JPH0421482B2 (fr) 1992-04-10
ZA857307B (en) 1986-06-25
DE3573209D1 (en) 1989-11-02
EP0176816A1 (fr) 1986-04-09
CH666171A5 (de) 1988-07-15
FI81245B (fi) 1990-06-29
BR8504774A (pt) 1986-07-22
CA1252036A (fr) 1989-04-04
FI853811L (fi) 1986-04-04
NO900023L (no) 1986-04-04
DK164630B (da) 1992-07-27
AU4617885A (en) 1986-04-10
ATE46608T1 (de) 1989-10-15
NO166213B (no) 1991-03-11
EP0322400A3 (en) 1989-07-19
US4684173A (en) 1987-08-04
DK448185D0 (da) 1985-10-02
AU577143B2 (en) 1988-09-15
JPS6187505A (ja) 1986-05-02
EP0322400A2 (fr) 1989-06-28
FI853811A0 (fi) 1985-10-02
DK448185A (da) 1986-04-04
NO900023D0 (no) 1990-01-04
ATE104835T1 (de) 1994-05-15
PT81046A (de) 1985-09-01
DE3587809D1 (de) 1994-06-01
NO853896L (no) 1986-04-04
NO166213C (no) 1991-06-19
DK164630C (da) 1992-12-14
FI81245C (fi) 1990-10-10
PT81046B (pt) 1987-08-19
EP0322400B1 (fr) 1994-04-27

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