EP0277474B2 - Sitzmöbel - Google Patents

Sitzmöbel Download PDF

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Publication number
EP0277474B2
EP0277474B2 EP88100026A EP88100026A EP0277474B2 EP 0277474 B2 EP0277474 B2 EP 0277474B2 EP 88100026 A EP88100026 A EP 88100026A EP 88100026 A EP88100026 A EP 88100026A EP 0277474 B2 EP0277474 B2 EP 0277474B2
Authority
EP
European Patent Office
Prior art keywords
link
seat
seating
support
spring element
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 - Lifetime
Application number
EP88100026A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0277474B1 (de
EP0277474A1 (de
Inventor
Rainer Machate
Robert Vonhausen
E. Hansen
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.)
Vermoegensverwaltung Franz Vogt Familienstiftung KG
Original Assignee
Vermoegensverwaltung Franz Vogt Familienstiftung 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6318587&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0277474(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Vermoegensverwaltung Franz Vogt Familienstiftung KG filed Critical Vermoegensverwaltung Franz Vogt Familienstiftung KG
Priority to AT88100026T priority Critical patent/ATE62385T1/de
Publication of EP0277474A1 publication Critical patent/EP0277474A1/de
Publication of EP0277474B1 publication Critical patent/EP0277474B1/de
Application granted granted Critical
Publication of EP0277474B2 publication Critical patent/EP0277474B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • 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
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/26—Chairs or stools with vertically-adjustable seats with vertical, or inclined toothed rack; with peg-and-notch mechanism
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs

Definitions

  • the invention relates to seating furniture according to the preamble of claim 1.
  • the inclination of the seat part and / or the back part is adjustable.
  • Simple office chairs usually have only one back support, which is resiliently attached to the seat support and has a height-adjustable back part at its upper end.
  • More comfortable office seating has a continuous seat shell that includes both the seat part and the back part.
  • the attachment of the back part is usually done using more complex mechanical devices, such as are known for example from DE-A-35 20 188.
  • the support force is proportional to the weight of the user; it is determined by the length of a lever which is formed by a bent part of a back holder between a pusher and the pivot bearing.
  • This rigidly angled backrest is freely suspended on the seat part, under which the lever end engages at the back, so that the inclination of the seat part inevitably changes with every change in the back position. This usually goes far beyond the needs of the seated person and gives them an unstable feeling; one involuntarily has a rocking chair, so to speak, which is undesirable for many purposes or even annoying.
  • the invention has for its object to provide a chair of the type known from DE-A-2 026 929, which is of simple construction and safe handling, in which an adjustment of the restoring force of the seat and the supporting force of the back part is also automatically in Depends on the user weight, but without the mentioned constant change in inclination of both support parts would have to be accepted.
  • the swivel bearing of the back support is arranged on the seat support in a stationary manner, a free lever arm of the back support projecting over the swivel bearing against the Spring element presses.
  • the spring element is biased depending on the weight of the user.
  • it is pivoted on the seat support with support on the prestressed spring element. In a particularly simple manner, a direct influence of the user weight on the support torque generated by the back support is achieved.
  • the lever arm of the back support is arranged horizontally and is supported against the spring element arranged vertically between the seat part and the lever arm.
  • This arrangement proves to be particularly space-saving.
  • a front link bearing the seat part on the seat support can be designed as a double lever, the lower end region of which is supported against the essentially horizontal spring element which is arranged between the double lever and the lever arm. Thanks to this design, the overall length of the spring element can be increased considerably, which makes it possible to adapt the seating furniture over a wide weight range.
  • the seat part is advantageously mounted on the seat support by means of a front link and on the back support by means of a rear link.
  • the spring element is biased in the manner described; if the person sitting on the seating furniture leans back, however, the part of the seat part facing the back support is also lowered somewhat. This increases the seating comfort considerably and, depending on the lever ratios selected, can considerably expand the adjustment options. Even a small load on the back part when the seated person leans back is the area of the seat support facing the back support so loaded that the supporting force of the back part automatically adapts to the weight of the person and the load on the seating.
  • the seat part is mounted by means of a front link on a pivot bearing which is stationary on the seat support and which is acted upon by a handlebar which is mounted on the seat part by means of a first link which is pivotally mounted thereon and is mounted on the handlebar in its central region ., The free end of which is connected via a link guide formed on a second link to the second link mounted pivotally on the seat support.
  • this construction has the advantage that when the parallelogram steering arrangement is pivoted, not only is a spring element preloaded, but the lever ratio as a whole changes.
  • advantages result in particular from the fact that the spring element is mounted on the seat support at the articulation point of the second link and on the seat part at the articulation point of the front link. In this way, the greatest possible length of the spring element can be achieved, which leads to an adjustability of the seating furniture in a particularly wide weight range.
  • a second spring element is mounted on the pivot bearing, the drive end of which is mounted on the second link.
  • the second spring element serves to apply an additional supporting force to the back part. Since the second spring element is mounted on the second link, there are also changes in the force application point of the second spring element when the seat part is loaded by the interaction of the first link and the second link, so that its pretension is changed accordingly.
  • the second link is essentially T-shaped, the spring element and the second spring element each being mounted on the outer end of the cross connection of the T, while the link guide essentially along the end region of the free end of the T is trained.
  • the second link is designed in the form of an angle lever, as a result of which the power drive points and the respective lever arms can be changed in a particularly effective manner.
  • the seating furniture shown in FIGS. 1 to 6 each has a seat support 5, which can be provided in the usual way with feet and additionally with castors.
  • the seat support 5 has an essentially horizontally arranged area at its upper end.
  • the seat part 2 is mounted on the seat support 5 by means of a front and a rear link 10, 9.
  • the seat part 2, the handlebars 10, 9 and the corresponding area of the seat support 5 form a parallelogram.
  • the seat part 2 When the seat part 2 is loaded, it can be pivoted in the vertical direction about the articulation points of the links 10, 9. Due to the parallelogram-like mounting, there is also a slight horizontal displacement of the seat part 2 when it is loaded.
  • a back support 4 is mounted, which carries a back part 3 at its upper end.
  • the back part 3 can be arranged in an articulated manner on the back support 4, the back support 4 can, as usual, have a certain intrinsic elasticity.
  • the rear link 9 is articulated directly on a horizontal part of the back support 4.
  • the back support 4 has an end region which projects over the pivot bearing 6 and which likewise extends essentially in a horizontal direction and serves as a lower contact for a spring element 16 which is supported with its upper region against the seat part 2.
  • a further spring element 16 ' is arranged between the horizontal part of the back support 4 and the seat support 5.
  • the spring element 16 ' also extends in the vertical direction.
  • the seat part 2 When the seat part 2 is loaded, it is pressed down due to the parallelogram-type arrangement. This leads to a load on the spring elements 16, 16 ', i. H. these spring elements are biased by the weight of the person sitting on the seat part 2.
  • the pivot bearing 6 forms a pivoting possibility for the back support 4, as a result of which it can be pivoted away from the seat part 2 in the usual manner by 15 ° to 20 °.
  • the back support 4 is pivoted about the pivot bearing 6. This causes a load on the spring 16 as well as a load on the spring 16 '.
  • the back carrier 4 facing the rear end of the seat part 2 is slightly lowered.
  • the back carrier 4 will thus pivot depending on the prestressing of these spring elements. In this way, an adjustment of the support force of the back part 3 to the weight of the person sitting on the seat part 2 is possible.
  • This embodiment differs from the embodiment according to FIG. 1 in the configuration of the projecting end region of the back support 4.
  • the back support 4 extends in the unloaded state of the seating furniture between the pivot bearing and the region of the articulation of the rear link 9 essentially horizontally.
  • the area of the back support 4 projecting over the pivot bearing 6 is designed in the form of an angle lever so that the articulation point of the spring element 16 is at a greater distance in the vertical direction from the seat part 2 than the remaining, horizontally extending area of the back support 4.
  • the mode of operation of the embodiment shown in FIG. 2 corresponds to that of the embodiment of FIG. 1.
  • the embodiment according to FIG. 2 has a bellows-like, elastic intermediate part 21, which connects the seat part 2 to the back part 3, so that the visual impression of a one-piece seat shell is produced.
  • the intermediate part 21 has no function with regard to the stowing possibilities of the seating furniture.
  • FIGS. 3 and 4 correspond to the exemplary embodiments of FIGS. 1 and 2 except for the differences described below. The same parts have been provided with the same reference numerals.
  • a horizontally arranged spring element 24 is provided in the exemplary embodiments of FIGS. 3 and 4.
  • the front handlebar 10 (FIGS. 1 and 2) was replaced by a double lever 27, the upper area of which is articulated on the seat part 2 and on the seat support and thus corresponds in its function to the front handlebar 10 of FIGS. 1 and 2.
  • the double lever 27 has a freely projecting lower end, which is in contact with the spring element 24.
  • the other end of the spring element 24 is in contact with an angled area of the back support 4, which forms a lever arm 25.
  • the lever arm 25 preferably extends in the vertical direction and has a right angle to the horizontally extending region of the back support 4.
  • the mode of operation of the seating furniture according to the exemplary embodiments of FIGS. 3 and 4 corresponds to the mode of operation described in connection with FIGS. 1 and 2.
  • a load on the seat part 2 also leads to a pretension of the spring element elements 24, so that the back part 3 can apply a supporting moment to the back of the user of the seating furniture, which, due to the prestressing of the spring element 24, is adapted to the weight of the person.
  • the end of the seat part 2 facing the back support 4 is not mounted on the back support 4 by means of the rear link 9 but rather directly on the pivot bearing 6 which is arranged in a fixed manner with the seat support 5.
  • a load on the seat part 2 causes the spring element 24 to be pretensioned, but the seat part 2 remains in its essentially horizontal position, and there is no inclination when the user leans against the back part 3. This can prove to be advantageous if a change in the seating position is undesirable.
  • the seat part 2 is articulated at its front area by means of the front link 10 to the seat support 5.
  • the connection of the front link 10 to the seat part 5 takes place via a pivot bearing 31, which is arranged in a stationary manner on the seat support 5.
  • a pivot bearing 31 On the pivot bearing 31 a substantially parallel to the seat part 2 extending handlebar 30 is articulated.
  • the area of the seat part 2 facing the back support 4 is connected in an articulated manner to a first link 32, to which the link rod 30 is also articulated.
  • the first link 32 is connected to the seat part 2 via a pivot bearing 37 which is at a distance from a pivot bearing 38, on which the link rod 30 is articulated on the first link 32.
  • a connecting line of the pivot bearings 37 and 38 is substantially parallel to the front link 10.
  • the distance between a pivot bearing 39, at which the seat part 2 is connected to the front link 10, and the pivot bearing 31 essentially corresponds to the distance between the pivot bearings 37 and 38.
  • a parallelogram is thus formed by the seat part 2, such as the handlebar 30, the front link 10 and the first link 32.
  • the first link 32 has at its lower end at a distance from the pivot bearing 38 and the pivot bearing 37 a further pivot bearing 40, which is displaceable in a link guide 36 of a second link 33.
  • the second link 33 is fixed to a pivot bearing 41 on the seat support 5.
  • the second link 33 can be pivoted about the pivot bearing 41 if the seat part 2 is moved in a substantially vertical direction in its rear region facing the back support 4, i.e. the H. when a user sits on the seat part 2.
  • the link guide 36 is designed in the form of an elongated hole which does not yet extend in a straight direction, but has a curvature which is provided with a radius which corresponds to the distance between the pivot bearings 38 and 40.
  • a spring element 34 is arranged between the pivot bearings 39 and 41, which supports the seat part 2. When the seat part 2 is loaded, the spring element 34 is prestressed.
  • the second link 33 is designed in the form of an angle lever and essentially has a T-shaped configuration.
  • the link guide 36 is formed on the central region of the T-shaped second link 33, while the pivot bearing 41 is provided on the end region of the T region which extends in the transverse direction.
  • a pivot bearing 42 is provided, on which a second spring element 35 is articulated, the other end of which is fixed to the pivot bracket on the seat support 5.
  • the spring element 34 which supports the seat part 2 with respect to the seat support 5, to which the spring element 16 of FIGS. 1 to 4 corresponds, presses the first link 32 into the end of the link guide 36 of the second link pointing upward to the right 33.
  • the first link 32 in the link guide 36 is shifted accordingly, so that the lever arm in the link guide 36 adjusts to the pivot bearing of the second link 33.
  • the pivot bearing 40 of the link guide 36 is displaced when the seat part 2 is loaded, the effective lever length of the second link 33 is reduced.
  • the back support 4 is connected in one piece to the seat part 2. With a load on the back part 3, d. H. when the back support 4 is pivoted, a corresponding lowering of the part of the seat part 2 facing the back support 4 takes place at the same time.
  • the seat part 2 and the back support 4 are separate parts.
  • the latter is connected in an articulated manner to the lower part of the seat support 5 via a pivot bearing 43.
  • the back support 4 has a link guide 36 'which corresponds in its design to the link guide 36 and is arranged in alignment with the latter.
  • the pivot bearing 40 of the first link 32 is guided in both link guides 36, 36 '. It is thus possible to lower the seat part 2 in the unloaded state of the seating furniture without the inclination of the back support 4 being adjusted because the link guide 36 'coincides with the link guide 36.
  • the link guide 36 can be designed such that the desired adjustment of the back support 4 and thus of the back part 3 is carried out with the required adjustment of the inclination of the seat part 2.
  • the invention is not restricted to the exemplary embodiments shown; rather, various modifications are possible within the scope of the claims.
  • the dimensions and arrangement of the individual links are variable over a wide range.
  • the spring element described in general form can be designed as a mechanical compression spring, for example as a spiral spring. It is among other things however, it is also possible to provide a torsion spring, a pneumatic spring or a combination of a hydraulic and a pneumatic suspension.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs Characterized By Structure (AREA)
  • Special Chairs (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Springs (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Seats For Vehicles (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
EP88100026A 1987-01-09 1988-01-05 Sitzmöbel Expired - Lifetime EP0277474B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88100026T ATE62385T1 (de) 1987-01-09 1988-01-05 Sitzmoebel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873700447 DE3700447A1 (de) 1987-01-09 1987-01-09 Sitzmoebel
DE3700447 1987-01-09

Publications (3)

Publication Number Publication Date
EP0277474A1 EP0277474A1 (de) 1988-08-10
EP0277474B1 EP0277474B1 (de) 1991-04-10
EP0277474B2 true EP0277474B2 (de) 1993-09-15

Family

ID=6318587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100026A Expired - Lifetime EP0277474B2 (de) 1987-01-09 1988-01-05 Sitzmöbel

Country Status (15)

Country Link
US (1) US4962962A (da)
EP (1) EP0277474B2 (da)
JP (1) JPH0628609B2 (da)
KR (1) KR930000855B1 (da)
AT (1) ATE62385T1 (da)
AU (1) AU602043B2 (da)
BR (1) BR8800051A (da)
CA (1) CA1278995C (da)
DE (2) DE3700447A1 (da)
DK (1) DK3388A (da)
ES (1) ES2018460T5 (da)
GR (1) GR3001993T3 (da)
NO (1) NO880060L (da)
YU (1) YU47462B (da)
ZA (1) ZA88123B (da)

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USD463144S1 (en) 2000-09-28 2002-09-24 Formway Furniture Limited Chair

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Also Published As

Publication number Publication date
YU1688A (en) 1990-04-30
KR930000855B1 (en) 1993-02-08
JPS63240805A (ja) 1988-10-06
DK3388A (da) 1988-07-10
JPH0628609B2 (ja) 1994-04-20
EP0277474B1 (de) 1991-04-10
ES2018460B3 (es) 1992-01-01
DE3862308D1 (de) 1991-05-16
ES2018460T5 (es) 1995-08-01
KR890011564A (ko) 1989-08-21
CA1278995C (en) 1991-01-15
NO880060L (no) 1988-07-11
DE3700447A1 (de) 1988-07-21
ES2018460A4 (es) 1991-04-16
AU1014888A (en) 1988-07-14
AU602043B2 (en) 1990-09-27
EP0277474A1 (de) 1988-08-10
ZA88123B (en) 1989-03-29
NO880060D0 (no) 1988-01-08
GR3001993T3 (en) 1992-11-23
YU47462B (sh) 1995-10-03
DK3388D0 (da) 1988-01-06
ATE62385T1 (de) 1991-04-15
US4962962A (en) 1990-10-16
BR8800051A (pt) 1988-08-02

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