WO2023046240A1 - Article de meuble d'assise doté d'un module d'allonge de siège-dossier et d'un entraînement de dossier concurrent - Google Patents

Article de meuble d'assise doté d'un module d'allonge de siège-dossier et d'un entraînement de dossier concurrent Download PDF

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Publication number
WO2023046240A1
WO2023046240A1 PCT/DE2022/100702 DE2022100702W WO2023046240A1 WO 2023046240 A1 WO2023046240 A1 WO 2023046240A1 DE 2022100702 W DE2022100702 W DE 2022100702W WO 2023046240 A1 WO2023046240 A1 WO 2023046240A1
Authority
WO
WIPO (PCT)
Prior art keywords
lever
seat
chassis
seating furniture
seat part
Prior art date
Application number
PCT/DE2022/100702
Other languages
German (de)
English (en)
Inventor
Michael Schuster
Original Assignee
Michael Schuster
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 Michael Schuster filed Critical Michael Schuster
Publication of WO2023046240A1 publication Critical patent/WO2023046240A1/fr

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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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03211—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by electric motors
    • 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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
    • A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type

Definitions

  • the invention relates to a piece of seating furniture with a chassis, a seat part that can be pivoted in terms of inclination, a back part that can be swiveled relative to the seat part, and a foot part that is connected to the seat part and can be swiveled out, with the piece of seating furniture being adjustable between an upright sitting position and a lying position, for which purpose the Seating furniture in a reclining position, the seat part is moved relative to the chassis forward.
  • the present invention relates to seating furniture in which the back part can be pivoted without a wall and which is therefore also colloquially referred to as “sofa with wallaway function”. This means that when swiveling into a reclining position, the back part moves forward together with the seat part relative to the chassis, so that the back part does not or only slightly protrudes beyond the rear edge of the chair in any swiveling position.
  • the disadvantage here is, on the one hand, that two mutually attached displacement units are required to achieve the two-stage movement process mentioned, namely on the one hand in the form of a four-joint swivel guide for adjusting the seat part inclination and on the other hand in the form of a lever adjustment mechanism for the essentially linear displacement of the seat part and the back part adjustment coupled thereto .
  • the back mechanism provided for pivoting the back part is articulated with at least one lever on the chassis and this pivot point remains in an area behind the back part when the seat and back part are moved forwards, which makes it necessary for aesthetic reasons to cover this area located between the back part and the rear edge of the seat with upholstery technology.
  • the invention is based on the object of further developing a chair with a wall-away function of the generic type in such a way that creative freedom can be provided for the upholstery design in the backrest area and the aesthetics of the chair can thus be improved.
  • only one displacement unit can be provided for adjusting the seat and back parts.
  • the stated object is achieved by a piece of seating furniture with a seat/back/lounge module and a “running” back gear with the features listed in patent claim 1.
  • the movement sequence of the seat-back lounge module according to the invention which is articulated on the one hand on the chassis and on the other hand on the seat and back part, in the form of articulated chains connected one behind the other, is controlled in such a way that
  • the seat part is pushed forward and at the same time the inclination is adjusted until a so-called “lounge position” is reached, whereby in this adjustment position the back part is not or only slightly pivoted relative to the seat part, and
  • the seat part is moved further forward and essentially linearly, while the back part is pivoted relative to the seat part.
  • the movement sequence of the articulated chains of the seat-back lounge module is controlled according to the invention in such a way that during a first third of the displacement distance of the seat part between the upright sitting and the lying position of the piece of seating furniture, the predominant part of the inclination adjustment of the seat part takes place and the back part is in relation to the Seat part is pivoted only slightly.
  • the seat part is tilted to a much lesser extent than during the first third, with this smaller inclination adjustment being perceived by the user as a linear displacement of the seat part.
  • the back part is simultaneously pivoted relative to the seat part in inclination up to the reclining position of the chair.
  • only one displacement unit is required to achieve a two-stage adjustment process instead of two successively pivoting displacement units as previously known from the prior art.
  • the seat-back lounge module according to the invention enables a back mechanism that “runs along” with the seat part and is not articulated with a lever on the chassis, as is known in the case of generic seating furniture.
  • the upholstery of the back part can be designed completely freely, which means that modern seating furniture designs with slim upholstered backrests in particular can be realised.
  • FIG. 1 shows a piece of seating furniture according to the invention with a partially pivoted seat and back part
  • FIG. 2 shows the seating furniture according to the invention in an upright sitting position
  • FIG. 3 shows the seating furniture according to the invention according to FIG. 2 in a
  • FIG. 4 shows the piece of seating furniture according to the invention in a sectional representation in an intermediate position with the seat part pivoted in the inclination ("lounge position");
  • FIG. 5 shows the piece of seating furniture according to the invention in a partial sectional representation in the reclining position
  • FIG. 6 shows a detailed view of the piece of seating furniture according to the invention in an upright sitting position
  • FIG. 7 shows a detailed view of the chair according to the invention in the reclining position
  • 8 shows a piece of seating furniture according to the invention in a second embodiment with a pivotable foot part in an upright sitting position
  • FIG. 9 shows the piece of seating furniture according to the invention according to FIG. 8 in an intermediate position with the seat part pivoted in the inclination (“lounge position”) and
  • FIG. 10 shows the seating furniture according to the invention according to FIG. 8 in a reclining position.
  • FIG. 1 also shows the upholstery.
  • 1 to 7 show a first embodiment of the piece of seating furniture according to the invention.
  • the item of seating furniture 1 consists of a chassis 5, a seat part 3 and a back part 4 which can be pivoted relative to the seat part 3 by means of a back mechanism 20, with the item of seating furniture 1 being able to be moved between an upright sitting position shown in FIGS. 2, 3, 6 and 8 and an in 5, 7 and 10 can be pivoted, wherein in the lying position the back part 4 is pivoted further backwards relative to the seat part 3 than in the upright sitting position.
  • the seat part 3 can be displaced in relation to the chassis 5 and pivoted in inclination by means of a seat-back lounge module 2 according to the invention in the form of articulated chains connected one behind the other.
  • the seat-back lounge module 2 shown in detail in FIGS. 6 and 7 (the chassis 5 is hidden in these figures for the sake of clarity) has a first 7 and a second 12 each chassis lever articulated on the chassis 5 and a first 8 and a second 13 each articulated on the seat part 3 seat lever.
  • the first chassis lever 7 is connected to a second pivot point 16 at a second pivot point of the first seat lever 8 and the second chassis lever 12 is connected to a second pivot point 18 at a second pivot point of the second seat lever 13 .
  • the second chassis lever 12 and the second seat lever 13 are positioned closer to a vertical plane spanned by the seat part front edge 3a than the first chassis lever 7 and the first seat lever 8.
  • a coupling lever 14 is connected on the one hand to a third articulation point of the first seat lever 8 and on the other hand to a third articulation point of the second seat lever 13 .
  • the second chassis lever 12 is extended beyond the area of its pivot point 18 on the second seat lever 13 and is articulated at its free end to a first end of a control lever 19, the second end of which is articulated to a central area of the coupling lever 14, so that the second Chassis lever 12 with the second seat lever 13, the coupling lever 14 and the control lever 19 forms a four-bar linkage.
  • each pivoting movement of the first chassis lever 7 relative to the chassis 5 causes a forced pivoting of the first seat lever 8 relative to the seat part 3 as well as a forced pivoting of the second chassis lever 12 and the second seat lever 13, whereby a displacement of the seat part 3 is synchronous with these pivoting movements relative to the chassis 5 takes place.
  • the pivot point 15 of the first chassis lever 7 on the chassis 5 is at a greater distance from a contact plane of the chair 1 than the pivot point 16 of the first chassis lever 7 on the first seat lever 8, and the pivot point 17 of the second chassis lever 12 on the chassis 5 a bigger one Distance to the contact level of the seat 1 than the pivot point 18 of the second chassis lever 12 on the second seat lever 13.
  • the first seat lever 8 is longer than the second seat lever 13.
  • the longitudinal axis of the second seat lever 13 is more inclined to a vertical plane than the longitudinal axis of the first seat lever 8.
  • the first chassis lever 7 is pivoted relative to the first seat lever 8 and the second chassis lever 12 relative to the second seat lever 13 by an angle of more than 130°, with the second chassis lever 12 is pivoted relative to the second seat lever 13 by a greater angle than the first chassis lever 7 relative to the first seat lever 8.
  • first 7 and second chassis lever 12, the first 8 and second seat lever 13, the coupling lever 14 and the control lever 19 lead, among other things, to a movement sequence according to the invention, in which during the adjustment of the chair 1 from the upright sitting to the lying position, the seat part 3 is pushed forward by a displacement distance and the inclination is adjusted by an angular amount, whereby, starting from the upright sitting position of the chair 1, when 30% of the displacement distance of the seat part 3 is reached, the latter is moved by at least 50% of the angular amount, preferably by at least 70% of the angular amount is adjusted in the inclination.
  • the first chassis lever 7 is articulated to a first connecting lever 10 .
  • the first connecting lever 10 is articulated at its free end to a first end of a rotary lever 9 .
  • the rotary lever 9 is articulated with its preferably central area on the seat part 3 and with its second end on a second connecting lever 11 .
  • the free end of the second connecting lever 11 is articulated to the back part 4 .
  • the back part 4 is articulated on the seat part 3 and forms a four-bar chain with a first section 9a of the rotary lever 9, the second connecting lever 11 and the seat part 3, with this four-bar chain forming the back mechanism 20 of the seating furniture item 1 and being a component of the seat-back lounge module 2 is
  • a second section 9b of the rotary lever 9 forms a six-bar chain with the first connecting lever 10, the first chassis lever 7, the first seat lever 8, the seat part 3 and the chassis 5.
  • the back gear 20 is coupled to the first chassis lever 7 according to the invention in such a way that during the adjustment of the chair 1 from the upright sitting position to the lying position,
  • the back part 4 is adjusted by an angular amount b relative to the seat part 3 in inclination, wherein
  • the back part 4, with an inclination adjustment of the seat part 3 of 70% of the angular amount a, is adjusted by less than 30%, preferably by less than 15% of the angular amount b relative to the seat part 3 in inclination.
  • This characteristic of the back part 4 adjustment in relation to the seat part 3 inclination adjustment forms a further component for the desired two-stage movement sequence of the seating furniture 1, in which first the seat part 3 is adjusted in inclination and essentially only then the back part 4 is adjusted.
  • the two-stage adjustment sequence of the seating furniture item known from EP 3 143 902 A1 by means of two successively pivoting displacement units can thus be implemented using the seat-back lounge module 2 according to the invention with only one displacement unit.
  • a first linear actuator 21 is provided for adjusting the seat part 3 and the back part 4 between the upright sitting position and the lying position of the chair 1 , wherein
  • a first end 21a of the first linear actuator 21 is positioned closer to the rear edge of the chair 1 than a second end 21b of the first linear actuator 21, wherein
  • the first end 21a of the first linear actuator 21 is coupled to the seat part 3 via a first crossbar 22 connected to the seat part 3 and the second end 21b of the first linear actuator 21 is coupled to the chassis 5 via a second crossbar 23 connected to the chassis 5.
  • back edge of the seat refers to the perspective of a person sitting on the seat with their legs pointing forward and their back pointing back.
  • the actuation of the first linear actuator 21 causes a pivoting of the seat
  • the seat part 3 is displaced further forward and essentially linearly, with the back part 4 being pivoted relative to the seat part 3 during this displacement movement of the seat part 3 until the reclining position of the piece of seating furniture 1 is reached (Fig. 5 , figure
  • a second embodiment of the piece of seating furniture 1 according to the invention shown in FIGS. 8, 9 and 10 has a seat-back lounge module 2 which is in principle identical to the first embodiment.
  • the seat-back lounge module 2 is combined with a swing-out foot part 6 connected to the seat part 3 via at least one foot part adjustment mechanism 24.
  • a first end of a second linear actuator 25 is coupled to the seat part 3 via a third cross strut 26 connected to the seat part 3 and a second end of the second linear actuator 25 is coupled to the foot part adjustment gear 24 via a fourth cross strut 27 connected to the foot part adjustment gear 24 .
  • the foot part 6 can be retracted or extended independently of the adjustment position of the seat 3 and the back part 4 brought about by the seat-back lounge module 2 .
  • first 21 and the second linear actuator 25 are electronically controlled in such a way that the seat part 3 is always first adjusted to the "lounge position" by means of the first linear actuator 21 and only then is the foot part 6 extended.
  • the invention is not limited to the exemplary embodiments, but is variable in many ways within the scope of the disclosure.

Abstract

L'invention concerne un article de meuble d'assise (1) comprenant au moins un cadre de base (5), une partie siège (3) et une partie dossier (4) qui peut pivoter par rapport à la partie siège (3), la partie siège (3) pouvant pivoter quant à son inclinaison et être déplacée par rapport au cadre de base (5) au moyen d'un module d'allonge de siège-dossier (2), de préférence sous la forme de chaînes de liaison reliées les unes aux autres, le module d'allonge de siège-dossier (2) présentant au moins un premier levier de cadre de base (7) lié au cadre de base (5) et au moins un premier levier de siège (8) lié à la partie siège (3), un premier levier de liaison (10) étant relié au premier levier de cadre de base (7), le premier levier de liaison (10) étant relié à une première extrémité d'un levier rotatif (9) par son extrémité libre, le levier rotatif (9) étant relié à la partie siège (3) par sa zone de préférence centrale, le levier rotatif (9) étant relié à un second levier de liaison (11) par sa seconde extrémité, le second levier de liaison (11) étant relié à la partie dossier (4) de manière articulée par son extrémité libre, chaque mouvement de pivotement du premier levier de cadre de base (7) par rapport au cadre de base (5) poussant le premier levier de siège (8) à pivoter par rapport à la partie siège (3), chaque mouvement de pivotement du premier levier de cadre de base (7) et du premier levier de siège (8) poussant la partie siège (3) à se déplacer par rapport au cadre de base (5) et poussant la partie dossier (4) à pivoter par rapport à la partie siège (3).
PCT/DE2022/100702 2021-09-27 2022-09-21 Article de meuble d'assise doté d'un module d'allonge de siège-dossier et d'un entraînement de dossier concurrent WO2023046240A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202021003058.1 2021-09-27
DE202021003058 2021-09-27

Publications (1)

Publication Number Publication Date
WO2023046240A1 true WO2023046240A1 (fr) 2023-03-30

Family

ID=84044225

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2022/100702 WO2023046240A1 (fr) 2021-09-27 2022-09-21 Article de meuble d'assise doté d'un module d'allonge de siège-dossier et d'un entraînement de dossier concurrent

Country Status (1)

Country Link
WO (1) WO2023046240A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244620A (en) * 1978-03-22 1981-01-13 Mohasco Corporation Wall-proximity reclining chair
US4740031A (en) * 1986-09-05 1988-04-26 Parma Corporation Mechanism for a reclining chair or sofa module
EP3143902A1 (fr) 2015-09-15 2017-03-22 Ciar S.P.A. Fauteuil inclinable à mécanisme protège-mur

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244620A (en) * 1978-03-22 1981-01-13 Mohasco Corporation Wall-proximity reclining chair
US4740031A (en) * 1986-09-05 1988-04-26 Parma Corporation Mechanism for a reclining chair or sofa module
EP3143902A1 (fr) 2015-09-15 2017-03-22 Ciar S.P.A. Fauteuil inclinable à mécanisme protège-mur

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