EP3965616B1 - Seating furniture having a wall-away function and a foot part that can be pivoted out - Google Patents

Seating furniture having a wall-away function and a foot part that can be pivoted out Download PDF

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Publication number
EP3965616B1
EP3965616B1 EP20750573.6A EP20750573A EP3965616B1 EP 3965616 B1 EP3965616 B1 EP 3965616B1 EP 20750573 A EP20750573 A EP 20750573A EP 3965616 B1 EP3965616 B1 EP 3965616B1
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EP
European Patent Office
Prior art keywords
seat part
piece
seating furniture
articulated
foot part
Prior art date
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Application number
EP20750573.6A
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German (de)
French (fr)
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EP3965616B8 (en
EP3965616A1 (en
Inventor
Michael Schuster
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M Schuster Patentverwertungs GmbH
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Individual
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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
    • A47C7/002—Chair or stool bases
    • 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
    • A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest
    • A47C1/035—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest
    • A47C1/0355—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-rest in combination with movably coupled seat and back-rest, i.e. the seat and back-rest being movably coupled in such a way that the extension mechanism of the foot-rest is actuated at least by the relative movements of seat and backrest actuated by linkages, e.g. lazy-tongs mechanisms
    • 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
    • A47C1/034—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts including a leg-rest or foot-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
    • A47C7/36—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
    • 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
    • A47C7/56—Parts or details of tipping-up chairs, e.g. of theatre chairs
    • A47C7/58—Hinges, e.g. for mounting chairs in a curved row

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 can be swiveled out and is connected to the seat part via at least one foot part adjustment mechanism, with the seating furniture being adjusted from an upright sitting position to a Lying position, the seat part is shifted forward relative to the chassis, the foot part being pivoted in the sitting position essentially below the seat part and being pivoted out in front of the seat part in the lying position in such a way that the seat part is extended by the foot part.
  • the present invention relates to seating furniture in which the backrest can be pivoted without a wall and which is therefore also colloquially referred to as sofas with a wall-away function.
  • seating furniture which, in addition to such a wall-away function, also has a floor-free design with a foot part pivoted in approximately parallel below the seat part and a slim design in the front seat area.
  • US3493264A a generic piece of seating furniture is known.
  • the seat part, the back part and the foot part can be adjusted by means of linear actuators in the above-mentioned seating furniture.
  • the disadvantage of the seating furniture known from the publications mentioned is that a relatively short footrest is used, which is swung in approximately parallel below the seat part, which means that when the footrest is in the swiveled-out position, the user's feet protrude beyond the front edge of the footrest and therefore have no support surface , so that the lying comfort for the user is limited.
  • the invention is based on the object of further developing a piece of seating furniture of the generic type in such a way that, when using one or more linear actuators for adjusting the seat part, the back part and the foot part, the lying comfort of the seating furniture item is improved.
  • the adjusting gear used to pivot the foot part should be designed to save space, so that a slim design of the seat furniture is made possible in the front seating area and the foot part can be arranged below the lowest point of the adjusting gear.
  • a piece of seating furniture 1 consists of a chassis 5, a seat part 3, a back part 4 connected to the seat part 3 and/or the chassis 5 via at least one back part adjustment mechanism 2, and a swing-out foot part 6, with the seating furniture item 1 between an in figure 1 shown seating position and an in figure 8 shown lying position is pivotable.
  • the foot part 6 is connected to the seat part 3 via at least one foot part adjusting mechanism 9 in the form of at least five four-bar linkage chains arranged one behind the other.
  • the foot part 6 is designed in two parts, with the foot part 6 comprising a first foot board 6b fastened to a first foot part fitting 6a and a second foot board 6d fastened to a second foot part fitting 6c, the first foot part fitting 6a and the second foot part fitting 6c being coupled to one another in such a way that the first footboard 6b fastened to the first foot part fitting 6a from the sitting position in which the one fastened to the second foot part fitting 6c second footboard 6d preferably forms a front panel and the first footboard 6b is pivoted in underneath the seat part 3, can be pivoted into the reclining position, in which the second footboard 6d forms an extension of the seat part 3 with the first footboard 6b, adjoining the seat part 3, with the first footboard 6b is pivoted into an approximately horizontal position that lengthens the end of the pivoted-out second footboard 6d that faces away from the seat part 3 .
  • the first footboard 6b is arranged at least partially below the lowest point of the footrest adjustment mechanism 9 and preferably approximately parallel to the seat part 3 .
  • the foot part adjustment mechanism 9 of the seat 1 comprises five four-bar chains arranged one behind the other, with, in the seated position of the seat 1, a first 10 and/or a second articulated lever 11 being articulated on the seat part 3 and one between the two end articulation points 18, 19 of at least one of the first 10 and/or the second articulated lever 11 is arranged obliquely to the seat part 3 and the end articulation point 18 of this articulated lever facing the seat part 3 is positioned closer to a vertical plane spanned by the front edge 23 of the seat part than that of the seat part 3 opposite end articulation point 19 of this articulated lever, wherein, in the sitting position of the chair 1, a third 12 and a fourth articulated lever 13 have an orientation in which one between the two end articulation points 20, 21 of at least one of the third 12 and/or of the fourth articulated lever 13 is arranged obliquely to the seat part 3 and the end articulation point 21 of this articulated lever facing away from the seat part 3 is positioned
  • the terms “the end articulation point facing the seat part” and “the end articulation point facing away from the seat part” mean the shortest distance between an end articulation point of an articulated lever and the seat part, with an end articulation point of an articulated lever facing the seat part having a shorter distance to the seat part as an end pivot point of this articulated lever facing away from the seat part.
  • At least one of the first 10 and/or the second articulated lever 11 has a stop element 41 which, during the pivoting movement of the foot part 6, comes into contact with a stop surface of a seat part strap 42 connected to the front area of the seat part 3 ( figure 5 ).
  • a fifth 14 and a sixth articulated lever 15 are each articulated on the one hand on the third 12 and/or the fourth articulated lever 13, and at least one of the fifth 14 and/or the sixth articulated lever 15 is articulated on the other hand on the second foot part fitting 6c and forms with the first 6a and the second foot part fitting 6c and a connecting lever 37 a four-bar chain.
  • a coupling lever 16 is articulated on the one hand on the first 10 and the second articulated lever 11 and on the other hand on the third 12 and the fourth articulated lever 13 .
  • a control lever 17 is articulated, on the one hand, to the first 10 or the second articulated lever 11 and, on the other hand, to the third 12 or the fourth articulated lever 13 .
  • the first 10 and the second articulated lever 11 are on the one hand in a front area of the seat part 3 and on the other hand articulated on the coupling lever 16, the third 12 and the fourth articulated lever 13 are each articulated on the one hand on the coupling lever 16 and on the other hand with their end articulation points 20, 22 facing the seat part 3 in the sitting position of the chair 1, each on the sixth articulated lever 15, the sixth articulated lever 15 is also articulated on the second foot part fitting 6c, one of the third 12 and/or the fourth articulated lever 13 is extended beyond its articulation point on the coupling lever 16 and articulated at its free end on a first end of the control lever 17, whose second end is articulated to a middle region of one of the first 10 and/or the second articulated lever 11, the third articulated lever 12 is, in the sitting position of the chair 1, positioned closer to a vertical plane spanned by the front edge 23 of the seat part
  • a middle area of the articulated lever does not mean the exact geometric center, but rather the entire area of an articulated lever lying between the two end articulation points.
  • the first 6a and the second foot part fitting 6c are preferably pivotally connected to one another and the fifth 14 and the sixth articulated lever 15 are articulated at a distance from one another on the second foot part fitting 6c, with one of the articulated levers 14, 15 extending beyond the area of its articulation point on the second foot part fitting 6c is extended and is articulated at its free end to the first end of the connecting lever 37, the second end is articulated to the first foot part fitting 6a ( 9 ).
  • the first 10 and/or the second articulated lever 11 are pivoted in such a way that the coupling lever 16 is pushed forward in relation to the seat part 3, with the third 12 and the fourth articulated lever 13 are pivoted relative to the coupling lever 16 and the first 6a and the second foot part fitting 6c are pushed forward relative to the coupling lever 16.
  • the first 10 and/or the second articulated lever 11 on the one hand and the third 12 and/or the fourth articulated lever 13 on the other hand are arranged in such a way that during approximately the first half of the adjustment of the foot part 6 from the swiveled sitting position to the swiveled lying position the coupling lever 16 is lowered in relation to the seat part 3, with all sections of the fifth 14 and/or the sixth articulated lever 15 and an articulation point 30 of one of the fifth 14 and/or the sixth articulated lever 15 on the second foot part fitting 6c being raised in relation to the coupling lever 16.
  • the lowering of the coupling lever 16 is thus more or less compensated for by a simultaneous lifting of the fifth 14 and/or the sixth articulated lever 15 and the first 6a and the second foot part fitting 6c in relation to the coupling lever 16, which, in connection with a pivoting movement of the second foot part fitting 6c in the direction of the seat part 3, the effect is that the front edge 43 of the first footboard 6b follows an almost linear or a "flat" movement curve near the seat part front edge 23 during a first phase of pivoting from the sitting to the lying position, the movement curve of the pivot point 40 of the first foot part fitting 6a on the second foot part fitting 6c with respect to a horizontal plane spanned by this articulation point 40 in the sitting position of the chair 1 during the entire pivoting of the foot part 6 from the sitting to the lying position.
  • the inventive effect of a "flat" movement curve of the front edge 43 of the first footboard 6b ( 6 ) allows the use of a compared to the known, generic seating (see publications DE202016104352U1 and US020150272329A1 ) much longer first footboard 6b, so that in combination with the above-mentioned large travel of the foot part 6, a leg support surface that is particularly long according to the invention can be made available when the foot part 6 is in the pivoted-out position.
  • the coupling lever 16 is raised relative to the seat part 3, whereby at the same time the articulation point 30 of one of the fifth 14 and/or the sixth articulated lever 15 on the second foot part fitting 6c is lowered relative to the coupling lever 16.
  • the foot part adjustment mechanism 9 is stretched in such a way that a continuous upholstery covering extending over the seat part 3 and foot part 6 and not shown in the figures is tightened when the foot part 6 is in the pivoted-out position.
  • the arrangement of the sixth articulated lever 15 and its articulation points 20a, 22a, 30 on the third 12 and the fourth articulated lever 13 and on the second foot part fitting 6c is of decisive importance for the desired functional sequence and for a particularly space-saving design of the foot part adjustment gear 9 according to the invention to.
  • the sixth articulated lever 15 particularly preferably has a width of about 40-70 mm, with the articulation points 20a, 22a of the third articulated lever 12 and the fourth articulated lever 13 on the sixth articulated lever 15 facing the seat part 3 being in the sitting position of the chair 1 Longitudinal side of the sixth articulated lever 15 and the pivot point 30 of the second foot part fitting 6c are positioned on the sixth articulated lever 15 on the longitudinal side of the sixth articulated lever 15 facing away from the seat part 3 .
  • the sixth articulated lever 15 with the third 12 and the fifth articulated lever 14 and the second foot part fitting 6c forms a four-bar linkage chain 33, 34, 35, 36 crossing one another according to the invention, in which one through the pivot points 31, 32 of the fifth articulated lever 14 on the third articulated lever 12 and the second foot part fitting 6c and an imaginary connecting straight line 34 running through the pivot points 20a, 30 of the sixth articulated lever 15 on the third articulated lever 12 and the second foot part fitting 6c cross over ( 9 ).
  • the pivoting of the second foot part fitting 6c in the desired form is ensured according to the invention on the one hand, and on the other hand a particularly compact design of the foot part adjustment gear 9 is made possible according to the invention, in which at least three four-bar chains of the foot part adjustment gear 9, in the pivoted-in position, are on approximately the same level as the sixth articulated lever 15, so that the installation space required below the seat part 3 for the foot part adjusting mechanism 9 is not much more than the width of the sixth articulated lever 15 and the first footboard 6b can be arranged below the lowest point of the footrest adjustment gear 9 ( 3 ).
  • the sixth articulated lever 15 when viewing the item of seating furniture from the side when the item of seating furniture 1 is lying down, at least one of the third 12 and/or the fourth articulated lever 13, the fifth articulated lever 14, the second foot part fitting 6c and at least a partial area of the coupling lever 16 is largely covered by the sixth articulated lever 15, so that the viewer can only perceive a linear structure of a lever plate running flat below the seat part 3 and the foot part 6.
  • the footrest adjustment mechanism 9 is actuated by a first linear actuator 28, which is preferably coupled to the first 10 or the second articulated lever 11.
  • the five four-bar linkage chains of the foot part adjustment mechanism 9 arranged one behind the other are coupled to one another in such a way that the generation of a partial stroke on the first linear actuator 28 results in a pivoting of the first 10 and/or the second articulated lever 11 and thus, during the pivoting of the chair 1 between the seat and the lying position, causes the first footrest 6b to swing in or out by an angle of preferably 150° to 180°.
  • the back part adjusting mechanism 2 has a fastening plate 51 firmly connected to the seat part 3 with a pivoted lever 48 articulated thereon, which is also connected to the chassis 5 via a first connecting lever 39 and to the back part 4 via a second connecting lever 38 .
  • the seat part 3 can be displaced relative to the chassis 5 by means of a first 24 and a second displacement unit 25 from a sitting position displaced towards the rear edge of the seating furniture 1 into a lying position displaced towards the front edge of the seating furniture 1 and the inclination can be adjusted.
  • front edge of seat and “rear edge of seat” refer to the perspective of a person sitting on the chair, whose legs point forward and whose back points backwards.
  • the first displacement unit 24 has a swivel guide, with a front 7 and a rear link lever 8 forming a four-bar linkage with the seat part 3 and an intermediate support 26 connected to the second displacement unit 25 ( 2 ).
  • the second displacement unit 25 is formed by a linear or an approximately linear guide system, preferably by at least one linear guide 44 in the form of a rack and pinion gear with gears 46 that can be moved along a rack and pinion segment 45, or by a lever adjustment mechanism, with the guide system, starting from the sitting position of the chair 1, is movable along a forward motion path relative to the chassis 5, the motion path preferably being linear and/or the forward motion path increasing ( 4 ).
  • the first 24 and second displacement unit 25 are attached to each other, with the intermediate carrier 26 being connected to the gear wheels 46 of the linear guide 44 and the linear guide 44 being further connected to the rack segment 45 on the chassis 5, whereby the first displacement unit 24 is relative to the chassis 5 is slidably guided.
  • the first displacement unit 24 is subjected to a force by means of a tension spring 47 ( 2 , 4 ).
  • the tension spring 47 is preferably coupled to the seat part 3 on the one hand and preferably to the intermediate carrier 26 of the first displacement unit 24 on the other hand.
  • the first linear actuator 28 is connected at a first end to the first displacement unit 24 via a first cross strut 49 connected to the intermediate support 26 of the first displacement unit 24 and at a second end to the foot part adjustment gear 9 via a second cross strut connected to the foot part adjustment gear 9 50 coupled ( 2 ).
  • the first transverse strut 49 is guided in a displaceable manner both relative to the chassis 5 and relative to the seat part 3 .
  • a second linear actuator 29 is coupled at a first end to the chassis 5 and at a second end to the first cross brace 49 ( 2 ).
  • the first linear actuator 28 acting on the second transverse strut 50 holds the foot part 6 in the swiveled-in end position by means of the stop element 41 acting between the seat part bracket 42 and the foot part adjusting mechanism 9, and the first displacement unit 24 is moved by the defined position of the foot part 6 and by means of the first linear actuator 28 defined in their pivot position ( 1 , 2 ).
  • the first linear actuator 28 When actuated, the first linear actuator 28 generates a linear stroke consisting of at least a first and a second partial stroke, whereby in a first adjustment step of the seating furniture item 1 from the sitting to the lying position caused by the first partial stroke of the first linear actuator 28, the seat part 3 is moved by means of the first displacement unit 24 is displaced forwards and the rear area of the seat part 3 is lowered and the front area of the seat part 3 is raised, so that the seat part 3 is adjusted in inclination relative to the sitting position of the seating furniture item 1 until the rear link lever 8 of the first displacement unit 24 comes into contact with a stop element 27 on the seat part side and the pivoting movement of the first displacement unit 24 is thereby blocked.
  • the seating furniture item 1 is the foot section 6 is not yet extended ( 3 , 4 , 5 ).
  • the tension spring 47 shortens during this first adjustment step and thereby supports the adjustment movement of the seat part 3, as a result of which the seat part 3 is adjusted first without pivoting the foot part 6 relative to the seat part 3 ( 3 , 4 , 5 ).
  • a second adjustment step of the item of seating furniture 1 brought about by the second partial stroke of the first linear actuator 28 from the sitting to the lying position the tilting and displacement position of the seat part 3 relative to the chassis 5 achieved at the end of the first partial stroke is maintained and the position is maintained of the back part 4 relative to the seat part 3, an extension of the foot part 6 relative to the seat part 3 causes until the foot part 6 has reached the pivoted end position and thus a second intermediate position, also referred to as a "relaxation position" ( 7 ).
  • a linear stroke generated by actuation of the second linear actuator 29 causes a third adjustment step of the chair 1 from the sitting to the lying position, with during During this adjustment step, the seat part 3 is displaced forwards relative to the chassis 5 by means of the linear guide 44 and, as a result, the back part 4 is pivoted relative to the seat part 3 without any problems, coupled with the displacement movement of the seat part 3 ( 8 ).
  • All of the aforementioned adjustment steps effected by the first 28 and the second linear actuator 29 can be carried out separately and in any order or, if necessary, also simultaneously, with an adjustment of the back part 4 and the foot part 6 to be actuated independently of one another and an adjustment of the back part to be actuated independently of one another 4 and the seat part 3 is guaranteed, so that in every adjustment position of the seat part 3 or the foot part 6, the back part 4 can be adjusted without any problems to any desired pivoting position and in every adjustment position of the back part 4 the seat part 3 or the foot part 6 can be moved to any desired position can be pivoted.
  • the invention is not limited to the exemplary embodiment, but is variable in many ways within the scope of the disclosure.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
  • Special Chairs (AREA)

Description

Die Erfindung betrifft ein Sitzmöbel mit einem Chassis, einem in der Neigung verschwenkbaren Sitzteil, einem gegenüber dem Sitzteil verschwenkbaren Rückenteil und einem über wenigstens ein Fußteil-Verstellgetriebe an das Sitzteil angeschlossenen, ausschwenkbaren Fußteil, wobei zur Verstellung des Sitzmöbels von einer aufrechten Sitz- in eine Liegeposition das Sitzteil relativ zum Chassis nach vorne verschoben wird, wobei das Fußteil in der Sitzposition im Wesentlichen unterhalb des Sitzteiles eingeschwenkt ist und in der Liegeposition derart vor das Sitzteil ausgeschwenkt ist, dass das Sitzteil durch das Fußteil verlängert wird.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 can be swiveled out and is connected to the seat part via at least one foot part adjustment mechanism, with the seating furniture being adjusted from an upright sitting position to a Lying position, the seat part is shifted forward relative to the chassis, the foot part being pivoted in the sitting position essentially below the seat part and being pivoted out in front of the seat part in the lying position in such a way that the seat part is extended by the foot part.

Insbesondere betrifft die vorliegende Erfindung solche Sitzmöbel, bei welchen die Rückenlehne wandfrei verschwenkt werden kann und die daher umgangssprachlich auch als Sofas mit Wallaway-Funktion bezeichnet werden. Das bedeutet, dass beim Verschwenken in eine Liegeposition die Rückenlehne zusammen mit dem Sitzteil gegenüber dem Chassis nach vorne wandert, so dass die Rückenlehne in jeder Schwenkposition die Hinterkante des Sitzmöbels nicht oder nur unwesentlich überragt.In particular, the present invention relates to seating furniture in which the backrest can be pivoted without a wall and which is therefore also colloquially referred to as sofas with a wall-away function. This means that when swiveling into a reclining position, the backrest moves forward together with the seat part relative to the chassis, so that the backrest does not or only slightly protrudes beyond the rear edge of the chair in any swiveling position.

Aus den Druckschriften DE202016104352U1 und US020150272329A1 (Fig. 10, 11) sind Sitzmöbel bekannt, welche neben einer solchen Wallaway-Funktion auch eine bodenfreie Bauart mit einem etwa parallel unterhalb des Sitzteiles eingeschwenkten Fußteil und einem schlanken Design im vorderen Sitzbereich aufweisen. Aus US3493264 A ist ein gattungsgemäßes Sitzmöbel bekannt.From the pamphlets DE202016104352U1 and US020150272329A1 (FIGS. 10, 11) seating furniture is known which, in addition to such a wall-away function, also has a floor-free design with a foot part pivoted in approximately parallel below the seat part and a slim design in the front seat area. Out of US3493264A a generic piece of seating furniture is known.

Des Weiteren können bei den genannten Sitzmöbeln das Sitzteil, das Rückenteil und das Fußteil mittels Linearaktuatoren verstellt werden.Furthermore, the seat part, the back part and the foot part can be adjusted by means of linear actuators in the above-mentioned seating furniture.

Bei den aus den genannten Druckschriften bekannten Sitzmöbeln ist jedoch nachteilig, dass jeweils ein relativ kurzes, etwa parallel unterhalb des Sitzteiles eingeschwenktes Fußbrett Verwendung findet, wodurch, in ausgeschwenkter Position des Fußbrettes, die Füße des Benutzers die Vorderkante des Fußteiles überragen und somit keine Stützfläche haben, so dass der Liegekomfort für den Benutzer eingeschränkt ist.However, the disadvantage of the seating furniture known from the publications mentioned is that a relatively short footrest is used, which is swung in approximately parallel below the seat part, which means that when the footrest is in the swiveled-out position, the user's feet protrude beyond the front edge of the footrest and therefore have no support surface , so that the lying comfort for the user is limited.

Ausgehend vom geschilderten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Sitzmöbel der gattungsgemäßen Art dahingehend weiterzubilden, dass, bei Verwendung eines oder mehrerer Linearaktuatoren zur Verstellung des Sitzteiles, des Rückenteiles und des Fußteiles, der Liegekomfort des Sitzmöbels verbessert wird.Proceeding from the prior art described, the invention is based on the object of further developing a piece of seating furniture of the generic type in such a way that, when using one or more linear actuators for adjusting the seat part, the back part and the foot part, the lying comfort of the seating furniture item is improved.

Zur Erhöhung des Liegekomforts eines erfindungsgemäßen Sitzmöbels sollte ein im Vergleich zu den aus den Druckschriften DE202016104352U1 und US020150272329A1 bekannten Sitzmöbeln wesentlich längeres, etwa parallel unterhalb des Sitzteiles eingeschwenktes Fußbrett realisiert werden, so dass, in ausgeschwenkter Position des Fußteiles, eine vollständige Auflagefläche für die Füße des Benutzers gewährleistet ist.To increase the lying comfort of a piece of seating furniture according to the invention, a comparison should be made to those from the pamphlets DE202016104352U1 and US020150272329A1 Known seating furniture can be realized with a substantially longer footrest that is swiveled in approximately parallel below the seat part, so that when the foot part is in the swiveled-out position, a complete contact surface for the user's feet is ensured.

Dabei sollte das zur Verschwenkung des Fußteiles verwendete Verstellgetriebe Bauraum sparend ausgelegt sein, so dass ein schlankes Design des Sitzmöbels im vorderen Sitzbereich ermöglicht wird und dabei das Fußteil unterhalb des tiefsten Punktes des Verstellgetriebes angeordnet werden kann.The adjusting gear used to pivot the foot part should be designed to save space, so that a slim design of the seat furniture is made possible in the front seating area and the foot part can be arranged below the lowest point of the adjusting gear.

Die genannte Aufgabe wird erfindungsgemäß durch ein Sitzmöbel mit Wallaway-Funktion und ausschwenkbarem Fußteil mit den im Patentanspruch 1 aufgeführten Merkmalen gelöst.The stated object is achieved according to the invention by a piece of seating furniture with a wall-away function and a swing-out foot part with the features listed in patent claim 1.

Aufgrund einer erfindungsgemäßen Hebelgeometrie des Fußteil-Verstellgetriebes in Kombination mit einer erfindungsgemäßen Anordnung des Linearaktuators für die Sitzteil-/Fußteilverstellung kann ein wesentlich längeres, etwa parallel unterhalb des Sitzteiles eingeschwenktes Fußbrett für das Fußteil verwendet werden als bei den aus dem Stand der Technik bekannten Sitzmöbeln, da

  • einerseits das Fußbrett während einer ersten Phase der Verschwenkung des Sitzmöbels von der Sitz- in die Liegeposition näher zum Sitzteil und mit einer "flacheren" Bewegungskurve als bei den bekannten Sitzmöbeln geführt wird und
  • andererseits zur Vergrößerung des Abstandes der Sitzteilvorderkante zur Aufstandsebene des Sitzmöbels immer erst die Neigung des Sitzteiles verstellt wird und danach erst das Fußteil ausgefahren wird.
Due to a lever geometry according to the invention of the foot part adjustment mechanism in combination with an arrangement according to the invention of the linear actuator for the seat part/foot part adjustment, a significantly longer foot board, pivoted approximately parallel below the seat part, can be used for the foot part than in the seating furniture known from the prior art. there
  • on the one hand, the footboard is guided during a first phase of the pivoting of the chair from the sitting to the lying position closer to the seat part and with a "flatter" movement curve than in the known chairs and
  • on the other hand, in order to increase the distance between the front edge of the seat part and the contact plane of the seating furniture item, the inclination of the seat part is always adjusted first and only then is the foot part extended.

Hierdurch wird erfindungsgemäß eine derartige Liegelänge des ausgeschwenkten Fußteiles erzielt, dass eine vollständige Auflagefläche für die Füße des Benutzers gewährleistet ist.In this way, according to the invention, such a lying length of the pivoted-out foot part is achieved that a complete support surface for the user's feet is ensured.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der beigefügten Zeichnung beschrieben. Diese zeigt in

Fig. 1
ein erfindungsgemäßes Sitzmöbel in Sitzposition des Sitzmöbels;
Fig. 2
ein erfindungsgemäßes Sitzmöbel gemäß Fig. 1 aus anderer Perspektive;
Fig. 3
ein erfindungsgemäßes Sitzmöbel in einer ersten Zwischenposition;
Fig. 4
ein erfindungsgemäßes Sitzmöbel gemäß Fig. 3 aus anderer Perspektive;
Fig. 5
ein erfindungsgemäßes Sitzmöbel gemäß Fig. 3 in einer Detailansicht;
Fig. 6
ein erfindungsgemäßes Sitzmöbel gemäß Fig. 3 mit teilweise verschwenktem Fußteil;
Fig. 7
ein erfindungsgemäßes Sitzmöbel in einer zweiten Zwischenposition;
Fig. 8
ein erfindungsgemäßes Sitzmöbel in Liegeposition des Sitzmöbels.
Fig. 9
ein erfindungsgemäßes Sitzmöbel gemäß Fig. 7 in einer Detailansicht des Fußteil-Verstellgetriebes.
An embodiment of the invention is described below with reference to the accompanying drawings. This shows in
1
a chair according to the invention in the sitting position of the chair;
2
a piece of seating furniture according to the invention 1 from another perspective;
3
a piece of seating furniture according to the invention in a first intermediate position;
4
a piece of seating furniture according to the invention 3 from another perspective;
figure 5
a piece of seating furniture according to the invention 3 in a detailed view;
6
a piece of seating furniture according to the invention 3 with partially pivoted foot section;
7
a piece of seating furniture according to the invention in a second intermediate position;
8
a piece of furniture according to the invention in the lying position of the piece of furniture.
9
a piece of seating furniture according to the invention 7 in a detailed view of the footrest adjustment mechanism.

Die Darstellungen in der Zeichnung zeigen im Wesentlichen nur den Mechanismus des erfindungsgemäßen Sitzmöbels 1 ohne die hier nicht interessierenden Teile wie insbesondere Polsterungen.The illustrations in the drawing essentially only show the mechanism of the chair 1 according to the invention without the parts that are not of interest here, such as in particular upholstery.

Einige nachfolgend erwähnte Komponenten sind durch einen weitgehend spiegelbildlichen Aufbau der Mechanik des Sitzmöbels 1 doppelt vorhanden, wobei auf diese Komponenten im Folgenden jeweils in der Einzahl eingegangen wird, wobei hiermit jeweils beide Komponenten gemeint sind.Some of the components mentioned below are duplicated due to a largely mirror-inverted structure of the mechanism of the seating furniture item 1, these components being discussed below in the singular, meaning both components in each case.

Ein erfindungsgemäßes Sitzmöbel 1 besteht aus einem Chassis 5, einem Sitzteil 3, einem über wenigstens ein Rückenteil-Verstellgetriebe 2 mit dem Sitzteil 3 und/oder dem Chassis 5 verbundenen Rückenteil 4 und einem ausschwenkbaren Fußteil 6, wobei das Sitzmöbel 1 zwischen einer in Figur 1 gezeigten Sitzposition und einer in Figur 8 gezeigten Liegeposition verschwenkbar ist.A piece of seating furniture 1 according to the invention consists of a chassis 5, a seat part 3, a back part 4 connected to the seat part 3 and/or the chassis 5 via at least one back part adjustment mechanism 2, and a swing-out foot part 6, with the seating furniture item 1 between an in figure 1 shown seating position and an in figure 8 shown lying position is pivotable.

Das Fußteil 6 ist über wenigstens ein Fußteil-Verstellgetriebe 9, in Form von mindestens fünf hintereinander angeordneten Viergelenkketten, an das Sitzteil 3 angeschlossen.The foot part 6 is connected to the seat part 3 via at least one foot part adjusting mechanism 9 in the form of at least five four-bar linkage chains arranged one behind the other.

Das Fußteil 6 ist zweiteilig ausgebildet, wobei das Fußteil 6 ein an einem ersten Fußteilbeschlag 6a befestigtes erstes Fußbrett 6b und ein an einem zweiten Fußteilbeschlag 6c befestigtes zweites Fußbrett 6d umfasst, wobei der erste 6a und der zweite Fußteilbeschlag 6c derart miteinander gekoppelt sind, dass das an dem ersten Fußteilbeschlag 6a befestigte erste Fußbrett 6b aus der Sitzposition, in der das an dem zweiten Fußteilbeschlag 6c befestigte zweite Fußbrett 6d vorzugsweise eine Frontblende bildet und das erste Fußbrett 6b unterhalb des Sitzteiles 3 eingeschwenkt ist, in die Liegeposition verschwenkbar ist, in der das zweite Fußbrett 6d mit dem ersten Fußbrett 6b eine an das Sitzteil 3 anschließende Verlängerung des Sitzteiles 3 bildet, wobei das erste Fußbrett 6b in eine das dem Sitzteil 3 abgewandte Ende des ausgeschwenkten zweiten Fußbrettes 6d verlängernde, etwa horizontale Position verschwenkt wird.The foot part 6 is designed in two parts, with the foot part 6 comprising a first foot board 6b fastened to a first foot part fitting 6a and a second foot board 6d fastened to a second foot part fitting 6c, the first foot part fitting 6a and the second foot part fitting 6c being coupled to one another in such a way that the first footboard 6b fastened to the first foot part fitting 6a from the sitting position in which the one fastened to the second foot part fitting 6c second footboard 6d preferably forms a front panel and the first footboard 6b is pivoted in underneath the seat part 3, can be pivoted into the reclining position, in which the second footboard 6d forms an extension of the seat part 3 with the first footboard 6b, adjoining the seat part 3, with the first footboard 6b is pivoted into an approximately horizontal position that lengthens the end of the pivoted-out second footboard 6d that faces away from the seat part 3 .

Das erste Fußbrett 6b ist in eingeschwenkter Position zumindest teilweise unterhalb des tiefsten Punktes des Fußteil-Verstellgetriebes 9 und vorzugsweise annähernd parallel zum Sitzteil 3 angeordnet.In the pivoted-in position, the first footboard 6b is arranged at least partially below the lowest point of the footrest adjustment mechanism 9 and preferably approximately parallel to the seat part 3 .

Das Fußteil-Verstellgetriebe 9 des erfindungsgemäßen Sitzmöbels 1 umfasst fünf hintereinander angeordnete Viergelenkketten, wobei, in Sitzposition des Sitzmöbels 1, ein erster 10 und/oder ein zweiter Gelenkhebel 11 am Sitzteil 3 angelenkt sind/ist und eine zwischen den beiden End-Gelenkpunkten 18, 19 von zumindest einem des ersten 10 und/oder des zweiten Gelenkhebels 11 gebildete Längsachse schräg zum Sitzteil 3 angeordnet ist und dabei der dem Sitzteil 3 zugewandte End-Gelenkpunkt 18 dieses Gelenkhebels näher zu einer von der Sitzteilvorderkante 23 aufgespannten Vertikalebene positioniert ist als der dem Sitzteil 3 abgewandte End-Gelenkpunkt 19 dieses Gelenkhebels, wobei, in Sitzposition des Sitzmöbels 1, ein dritter 12 und ein vierter Gelenkhebel 13 eine Ausrichtung aufweisen, bei welcher eine zwischen den beiden End-Gelenkpunkten 20, 21 von zumindest einem des dritten 12 und/oder des vierten Gelenkhebels 13 gebildete Längsachse schräg zum Sitzteil 3 angeordnet ist und dabei der dem Sitzteil 3 abgewandte End-Gelenkpunkt 21 dieses Gelenkhebels näher zu einer von der Sitzteilvorderkante 23 aufgespannten Vertikalebene positioniert ist als der dem Sitzteil 3 zugewandte End-Gelenkpunkt 20 dieses Gelenkhebels.The foot part adjustment mechanism 9 of the seat 1 according to the invention comprises five four-bar chains arranged one behind the other, with, in the seated position of the seat 1, a first 10 and/or a second articulated lever 11 being articulated on the seat part 3 and one between the two end articulation points 18, 19 of at least one of the first 10 and/or the second articulated lever 11 is arranged obliquely to the seat part 3 and the end articulation point 18 of this articulated lever facing the seat part 3 is positioned closer to a vertical plane spanned by the front edge 23 of the seat part than that of the seat part 3 opposite end articulation point 19 of this articulated lever, wherein, in the sitting position of the chair 1, a third 12 and a fourth articulated lever 13 have an orientation in which one between the two end articulation points 20, 21 of at least one of the third 12 and/or of the fourth articulated lever 13 is arranged obliquely to the seat part 3 and the end articulation point 21 of this articulated lever facing away from the seat part 3 is positioned closer to a vertical plane spanned by the seat part front edge 23 than the end articulation point 20 of this articulated lever facing the seat part 3.

Mit den Begriffen "der dem Sitzteil zugewandte End-Gelenkpunkt" und "der dem Sitzteil abgewandte End-Gelenkpunkt" ist jeweils der kürzeste Abstand eines End-Gelenkpunktes eines Gelenkhebels zum Sitzteil gemeint, wobei ein dem Sitzteil zugewandter End-Gelenkpunkt eines Gelenkhebels einen kürzeren Abstand zum Sitzteil aufweist als ein dem Sitzteil abgewandter End-Gelenkpunkt dieses Gelenkhebels.The terms "the end articulation point facing the seat part" and "the end articulation point facing away from the seat part" mean the shortest distance between an end articulation point of an articulated lever and the seat part, with an end articulation point of an articulated lever facing the seat part having a shorter distance to the seat part as an end pivot point of this articulated lever facing away from the seat part.

Wenigstens einer des ersten 10 und/oder des zweiten Gelenkhebels 11 weist ein Anschlagelement 41 auf, welches während der Schwenkbewegung des Fußteiles 6 an einer Anschlagfläche einer mit dem vorderen Bereich des Sitzteiles 3 verbundenen Sitzteillasche 42 in Kontakt kommt (Fig. 5).At least one of the first 10 and/or the second articulated lever 11 has a stop element 41 which, during the pivoting movement of the foot part 6, comes into contact with a stop surface of a seat part strap 42 connected to the front area of the seat part 3 ( figure 5 ).

Ein fünfter 14 und ein sechster Gelenkhebel 15 sind einerseits jeweils an dem dritten 12 und/oder dem vierten Gelenkhebel 13 angelenkt, und zumindest einer des fünften 14 und/oder des sechsten Gelenkhebels 15 ist andererseits an dem zweiten Fußteilbeschlag 6c angelenkt und bildet mit dem ersten 6a und dem zweiten Fußteilbeschlag 6c sowie einem Verbindungshebel 37 eine Viergelenkkette.A fifth 14 and a sixth articulated lever 15 are each articulated on the one hand on the third 12 and/or the fourth articulated lever 13, and at least one of the fifth 14 and/or the sixth articulated lever 15 is articulated on the other hand on the second foot part fitting 6c and forms with the first 6a and the second foot part fitting 6c and a connecting lever 37 a four-bar chain.

Ein Koppelhebel 16 ist einerseits an dem ersten 10 und dem zweiten Gelenkhebel 11 und andererseits an dem dritten 12 und dem vierten Gelenkhebel 13 angelenkt.A coupling lever 16 is articulated on the one hand on the first 10 and the second articulated lever 11 and on the other hand on the third 12 and the fourth articulated lever 13 .

Ein Steuerhebel 17 ist einerseits an dem ersten 10 oder dem zweiten Gelenkhebel 11 und andererseits an dem dritten 12 oder dem vierten Gelenkhebel 13 angelenkt.A control lever 17 is articulated, on the one hand, to the first 10 or the second articulated lever 11 and, on the other hand, to the third 12 or the fourth articulated lever 13 .

Bei einer erfindungsgemäß besonders bevorzugten Anordnung der Gelenk-, Koppel- und Steuerhebel 10, 11, 12, 13, 14, 15, 16, 17 sind der erste 10 und der zweite Gelenkhebel 11 einerseits jeweils an einem vorderen Bereich des Sitzteiles 3 und andererseits jeweils an dem Koppelhebel 16 angelenkt, der dritte 12 und der vierte Gelenkhebel 13 sind einerseits jeweils an dem Koppelhebel 16 und andererseits mit ihren, in Sitzposition des Sitzmöbels 1, dem Sitzteil 3 zugewandten End-Gelenkpunkten 20, 22 jeweils an dem sechsten Gelenkhebel 15 angelenkt, der sechste Gelenkhebel 15 ist des Weiteren an dem zweiten Fußteilbeschlag 6c angelenkt, einer des dritten 12 und/oder des vierten Gelenkhebels 13 ist über seine Anlenkstelle an dem Koppelhebel 16 hinaus verlängert und an seinem freien Ende an einem ersten Ende des Steuerhebels 17 angelenkt, dessen zweites Ende gelenkig an einem mittleren Bereich eines des ersten 10 und/oder des zweiten Gelenkhebels 11 angeschlossen ist, der dritte Gelenkhebel 12 ist, in Sitzposition des Sitzmöbels 1, näher zu einer von der Sitzteilvorderkante 23 aufgespannten Vertikalebene positioniert als der vierte Gelenkhebel 13, der fünfte Gelenkhebel 14 ist einerseits an einem mittleren Bereich des dritten Gelenkhebels 12 und andererseits an dem zweiten Fußteilbeschlag 6c angelenkt (Fig. 6 und Fig. 9).In a particularly preferred arrangement of the articulated, coupling and control levers 10, 11, 12, 13, 14, 15, 16, 17 according to the invention, the first 10 and the second articulated lever 11 are on the one hand in a front area of the seat part 3 and on the other hand articulated on the coupling lever 16, the third 12 and the fourth articulated lever 13 are each articulated on the one hand on the coupling lever 16 and on the other hand with their end articulation points 20, 22 facing the seat part 3 in the sitting position of the chair 1, each on the sixth articulated lever 15, the sixth articulated lever 15 is also articulated on the second foot part fitting 6c, one of the third 12 and/or the fourth articulated lever 13 is extended beyond its articulation point on the coupling lever 16 and articulated at its free end on a first end of the control lever 17, whose second end is articulated to a middle region of one of the first 10 and/or the second articulated lever 11, the third articulated lever 12 is, in the sitting position of the chair 1, positioned closer to a vertical plane spanned by the front edge 23 of the seat part than the fourth articulated lever 13, which The fifth articulated lever 14 is articulated, on the one hand, to a central region of the third articulated lever 12 and, on the other hand, to the second foot part fitting 6c ( 6 and 9 ).

Mit "einem mittleren Bereich des Gelenkhebels" ist in diesem Zusammenhang nicht die genaue geometrische Mitte, sondern der gesamte zwischen den beiden End-Gelenkpunkten liegende Bereich eines Gelenkhebels gemeint.In this context, “a middle area of the articulated lever” does not mean the exact geometric center, but rather the entire area of an articulated lever lying between the two end articulation points.

Der erste 6a und der zweite Fußteilbeschlag 6c sind vorzugsweise schwenkbar miteinander verbunden und der fünfte 14 und der sechste Gelenkhebel 15 mit Abstand voneinander an dem zweiten Fußteilbeschlag 6c angelenkt, wobei einer der Gelenkhebel 14, 15 über den Bereich seiner Anlenkstelle an dem zweiten Fußteilbeschlag 6c hinaus verlängert ist und an seinem freien Ende am ersten Ende des Verbindungshebels 37 angelenkt ist, dessen zweites Ende gelenkig an dem ersten Fußteilbeschlag 6a angeschlossen ist (Fig. 9).The first 6a and the second foot part fitting 6c are preferably pivotally connected to one another and the fifth 14 and the sixth articulated lever 15 are articulated at a distance from one another on the second foot part fitting 6c, with one of the articulated levers 14, 15 extending beyond the area of its articulation point on the second foot part fitting 6c is extended and is articulated at its free end to the first end of the connecting lever 37, the second end is articulated to the first foot part fitting 6a ( 9 ).

Während der Verstellung des Sitzmöbels 1 von der Sitz- in die Liegeposition werden der erste 10 und/oder der zweite Gelenkhebel 11 derart verschwenkt, dass der Koppelhebel 16 gegenüber dem Sitzteil 3 nach vorne geschoben wird, wobei gleichzeitig der dritte 12 und der vierte Gelenkhebel 13 gegenüber dem Koppelhebel 16 verschwenkt werden und dabei der erste 6a und der zweite Fußteilbeschlag 6c gegenüber dem Koppelhebel 16 nach vorne geschoben werden.During the adjustment of the item of seating furniture 1 from the sitting to the reclining position, the first 10 and/or the second articulated lever 11 are pivoted in such a way that the coupling lever 16 is pushed forward in relation to the seat part 3, with the third 12 and the fourth articulated lever 13 are pivoted relative to the coupling lever 16 and the first 6a and the second foot part fitting 6c are pushed forward relative to the coupling lever 16.

Aufgrund der erfindungsgemäßen Anordnung und der sich addierenden Schwenkbewegungen des ersten 10 und/oder des zweiten Gelenkhebels 11 einerseits und des dritten 12 und/oder des vierten Gelenkhebels 13 andererseits, bei welchen während der Verstellung des Sitzmöbels 1 von der Sitz- in die Liegeposition einer des ersten 10 und/oder des zweiten Gelenkhebels 11 gegenüber einem des dritten 12 und/oder des vierten Gelenkhebels 13 erfindungsgemäß um einen Winkel von vorzugsweise mehr als 200° verschwenkt wird, wird insgesamt ein großer Verfahrweg für das Fußteil 6 erzielt.Due to the arrangement according to the invention and the cumulative pivoting movements of the first 10 and/or the second articulated lever 11 on the one hand and the third 12 and/or the fourth articulated lever 13 on the other hand, in which during the adjustment of the seating furniture item 1 from the sitting to the lying position one of the first 10 and/or the second articulated lever 11 is pivoted according to the invention by an angle of preferably more than 200° relative to one of the third 12 and/or the fourth articulated lever 13, a large travel path for the foot part 6 is achieved overall.

Erfindungsgemäß sind der erste 10 und/oder der zweite Gelenkhebel 11 einerseits und der dritte 12 und/oder der vierte Gelenkhebel 13 andererseits derart angeordnet, dass während einer etwa ersten Hälfte der Verstellung des Fußteiles 6 von der eingeschwenkten Sitz- in die ausgeschwenkte Liegeposition der Koppelhebel 16 gegenüber dem Sitzteil 3 abgesenkt wird, wobei gleichzeitig alle Abschnitte des fünften 14 und/oder des sechsten Gelenkhebels 15 und eine Anlenkstelle 30 eines des fünften 14 und/oder des sechsten Gelenkhebels 15 an dem zweiten Fußteilbeschlag 6c gegenüber dem Koppelhebel 16 angehoben werden.According to the invention, the first 10 and/or the second articulated lever 11 on the one hand and the third 12 and/or the fourth articulated lever 13 on the other hand are arranged in such a way that during approximately the first half of the adjustment of the foot part 6 from the swiveled sitting position to the swiveled lying position the coupling lever 16 is lowered in relation to the seat part 3, with all sections of the fifth 14 and/or the sixth articulated lever 15 and an articulation point 30 of one of the fifth 14 and/or the sixth articulated lever 15 on the second foot part fitting 6c being raised in relation to the coupling lever 16.

Die Absenkung des Koppelhebels 16 wird also quasi ausgeglichen durch eine gleichzeitige Anhebung des fünften 14 und/oder des sechsten Gelenkhebels 15 sowie des ersten 6a und des zweiten Fußteilbeschlages 6c gegenüber dem Koppelhebel 16, wodurch, in Verbindung mit einer Schwenkbewegung des zweiten Fußteilbeschlages 6c in Richtung des Sitzteiles 3, bewirkt wird, dass die Vorderkante 43 des ersten Fußbrettes 6b während einer ersten Phase der Verschwenkung von der Sitz- in die Liegeposition einer fast linearen, beziehungsweise einer "flachen" Bewegungskurve nahe der Sitzteilvorderkante 23 folgt, wobei die Bewegungskurve der Anlenkstelle 40 des ersten Fußteilbeschlages 6a an dem zweiten Fußteilbeschlag 6c gegenüber einer, in Sitzposition des Sitzmöbels 1, von dieser Anlenkstelle 40 aufgespannten Horizontalebene während der gesamten Verschwenkung des Fußteils 6 von der Sitz- in die Liegeposition ansteigend verläuft.The lowering of the coupling lever 16 is thus more or less compensated for by a simultaneous lifting of the fifth 14 and/or the sixth articulated lever 15 and the first 6a and the second foot part fitting 6c in relation to the coupling lever 16, which, in connection with a pivoting movement of the second foot part fitting 6c in the direction of the seat part 3, the effect is that the front edge 43 of the first footboard 6b follows an almost linear or a "flat" movement curve near the seat part front edge 23 during a first phase of pivoting from the sitting to the lying position, the movement curve of the pivot point 40 of the first foot part fitting 6a on the second foot part fitting 6c with respect to a horizontal plane spanned by this articulation point 40 in the sitting position of the chair 1 during the entire pivoting of the foot part 6 from the sitting to the lying position.

Der erfindungsgemäße Effekt einer "flachen" Bewegungskurve der Vorderkante 43 des ersten Fußbrettes 6b (Fig. 6) ermöglicht die Verwendung eines im Vergleich zu den bekannten, gattungsgemäßen Sitzmöbeln (siehe Druckschriften DE202016104352U1 und US020150272329A1 ) wesentlich längeren ersten Fußbrettes 6b, so dass in Kombination mit dem oben genannten großen Verfahrweg des Fußteiles 6 eine erfindungsgemäß besonders lange Beinauflagefläche, in ausgeschwenkter Position des Fußteiles 6, zur Verfügung gestellt werden kann.The inventive effect of a "flat" movement curve of the front edge 43 of the first footboard 6b ( 6 ) allows the use of a compared to the known, generic seating (see publications DE202016104352U1 and US020150272329A1 ) much longer first footboard 6b, so that in combination with the above-mentioned large travel of the foot part 6, a leg support surface that is particularly long according to the invention can be made available when the foot part 6 is in the pivoted-out position.

Während einer etwa zweiten Hälfte der Verstellung des Fußteiles 6 von der eingeschwenkten Sitz- in die ausgeschwenkte Liegeposition, wird der Koppelhebel 16 gegenüber dem Sitzteil 3 angehoben, wobei gleichzeitig die Anlenkstelle 30 eines des fünften 14 und/oder des sechsten Gelenkhebels 15 an dem zweiten Fußteilbeschlag 6c gegenüber dem Koppelhebel 16 abgesenkt wird. Hierdurch erfolgt eine derartige Streckung des Fußteil-Verstellgetriebes 9, dass eine sich über Sitzteil 3 und Fußteil 6 erstreckende, in den Figuren nicht gezeigte, durrchgehende Polsterauflage in ausgeschwenkter Position des Fußteiles 6 gestrafft wird.During approximately the second half of the adjustment of the foot part 6 from the swiveled-in sitting position to the swiveled-out lying position, the coupling lever 16 is raised relative to the seat part 3, whereby at the same time the articulation point 30 of one of the fifth 14 and/or the sixth articulated lever 15 on the second foot part fitting 6c is lowered relative to the coupling lever 16. As a result, the foot part adjustment mechanism 9 is stretched in such a way that a continuous upholstery covering extending over the seat part 3 and foot part 6 and not shown in the figures is tightened when the foot part 6 is in the pivoted-out position.

Erfindungsgemäß entscheidende Bedeutung für den gewünschten Funktionsablauf sowie für eine erfindungsgemäß besonders Bauraum sparende Auslegung des Fußteil-Verstellgetriebes 9 kommt der Anordnung des sechsten Gelenkhebels 15 und dessen Anlenkstellen 20a, 22a, 30 an dem dritten 12 und dem vierten Gelenkhebel 13 sowie an dem zweiten Fußteilbeschlag 6c zu.According to the invention, the arrangement of the sixth articulated lever 15 and its articulation points 20a, 22a, 30 on the third 12 and the fourth articulated lever 13 and on the second foot part fitting 6c is of decisive importance for the desired functional sequence and for a particularly space-saving design of the foot part adjustment gear 9 according to the invention to.

Dabei weist besonders bevorzugt der sechste Gelenkhebel 15 eine Breite von etwa 40-70 mm auf, wobei, in Sitzposition des Sitzmöbels 1, die Anlenkstellen 20a, 22a des dritten 12 und des vierten Gelenkhebels 13 an dem sechsten Gelenkhebel 15 an der dem Sitzteil 3 zugewandten Längsseite des sechsten Gelenkhebels 15 und die Anlenkstelle 30 des zweiten Fußteilbeschlages 6c an dem sechsten Gelenkhebel 15 an der dem Sitzteil 3 abgewandten Längsseite des sechsten Gelenkhebels 15 positioniert sind.The sixth articulated lever 15 particularly preferably has a width of about 40-70 mm, with the articulation points 20a, 22a of the third articulated lever 12 and the fourth articulated lever 13 on the sixth articulated lever 15 facing the seat part 3 being in the sitting position of the chair 1 Longitudinal side of the sixth articulated lever 15 and the pivot point 30 of the second foot part fitting 6c are positioned on the sixth articulated lever 15 on the longitudinal side of the sixth articulated lever 15 facing away from the seat part 3 .

Hierdurch bildet der sechste Gelenkhebel 15 mit dem dritten 12 und dem fünften Gelenkhebel 14 sowie dem zweiten Fußteilbeschlag 6c eine erfindungsgemäß sich kreuzende Viergelenkkette 33, 34, 35, 36, bei welcher eine durch die Anlenkstellen 31, 32 des fünften Gelenkhebels 14 an dem dritten Gelenkhebel 12 und dem zweiten Fußteilbeschlag 6c verlaufende, gedachte Verbindungsgerade 34 und eine durch die Anlenkstellen 20a, 30 des sechsten Gelenkhebels 15 an dem dritten Gelenkhebel 12 und dem zweiten Fußteilbeschlag 6c verlaufende, gedachte Verbindungsgerade 35 sich überkreuzen (Fig. 9).As a result, the sixth articulated lever 15 with the third 12 and the fifth articulated lever 14 and the second foot part fitting 6c forms a four-bar linkage chain 33, 34, 35, 36 crossing one another according to the invention, in which one through the pivot points 31, 32 of the fifth articulated lever 14 on the third articulated lever 12 and the second foot part fitting 6c and an imaginary connecting straight line 34 running through the pivot points 20a, 30 of the sixth articulated lever 15 on the third articulated lever 12 and the second foot part fitting 6c cross over ( 9 ).

Aufgrund der sich kreuzenden Wirk- beziehungsweise Verbindungsgeraden 34, 35 ist erfindungsgemäß einerseits die Verschwenkung des zweiten Fußteilbeschlages 6c in der gewünschten Form gewährleistet, andererseits wird eine erfindungsgemäß besonders kompakte Bauform des Fußteil-Verstellgetriebes 9 ermöglicht, bei welcher sich zumindest drei Viergelenkketten des Fußteil-Verstellgetriebes 9, in eingeschwenkter Position, auf einer etwa gleichen Ebene mit dem sechsten Gelenkhebel 15 befinden, so dass der unterhalb des Sitzteiles 3 für das Fußteil-Verstellgetriebe 9 beanspruchte Bauraum erfindungsgemäß nicht viel mehr als die Breite des sechsten Gelenkhebels 15 beträgt und das erste Fußbrett 6b unterhalb des tiefsten Punktes des Fußteil-Verstellgetriebes 9 angeordnet werden kann (Fig. 3).Due to the crossing active or connecting straight lines 34, 35, the pivoting of the second foot part fitting 6c in the desired form is ensured according to the invention on the one hand, and on the other hand a particularly compact design of the foot part adjustment gear 9 is made possible according to the invention, in which at least three four-bar chains of the foot part adjustment gear 9, in the pivoted-in position, are on approximately the same level as the sixth articulated lever 15, so that the installation space required below the seat part 3 for the foot part adjusting mechanism 9 is not much more than the width of the sixth articulated lever 15 and the first footboard 6b can be arranged below the lowest point of the footrest adjustment gear 9 ( 3 ).

Des Weiteren werden durch den sechsten Gelenkhebel 15, bei einer seitlichen Betrachtung des Sitzmöbels, in Liegeposition des Sitzmöbels 1, zumindest einer des dritten 12 und/oder des vierten Gelenkhebels 13, der fünfte Gelenkhebel 14, der zweite Fußteilbeschlag 6c und zumindest ein Teilbereich des Koppelhebels 16 von dem sechsten Gelenkhebel 15 weitestgehend überdeckt, wodurch für den Betrachter nur eine flach unterhalb des Sitzteiles 3 und des Fußteiles 6 verlaufende, linienförmige Struktur einer Hebelplatte wahrnehmbar ist.Furthermore, the sixth articulated lever 15, when viewing the item of seating furniture from the side when the item of seating furniture 1 is lying down, at least one of the third 12 and/or the fourth articulated lever 13, the fifth articulated lever 14, the second foot part fitting 6c and at least a partial area of the coupling lever 16 is largely covered by the sixth articulated lever 15, so that the viewer can only perceive a linear structure of a lever plate running flat below the seat part 3 and the foot part 6.

Die Betätigung des Fußteil-Verstellgetriebes 9 erfolgt durch einen vorzugsweise mit dem ersten 10 oder dem zweiten Gelenkhebel 11 gekoppelten ersten Linearaktuator 28.The footrest adjustment mechanism 9 is actuated by a first linear actuator 28, which is preferably coupled to the first 10 or the second articulated lever 11.

Die fünf hintereinander angeordneten Viergelenkketten des Fußteil-Verstellgetriebes 9 sind derart miteinander gekoppelt, dass die Erzeugung eines Teilhubes an dem ersten Linearaktuator 28 eine Verschwenkung des ersten 10 und/oder des zweiten Gelenkhebels 11 und damit, während der Verschwenkung des Sitzmöbels 1 zwischen der Sitz- und der Liegeposition, eine zwangsläufige Einschwenkung beziehungsweise Ausschwenkung des ersten Fußbrettes 6b um einen Winkel von vorzugsweise 150° bis 180° bewirkt.The five four-bar linkage chains of the foot part adjustment mechanism 9 arranged one behind the other are coupled to one another in such a way that the generation of a partial stroke on the first linear actuator 28 results in a pivoting of the first 10 and/or the second articulated lever 11 and thus, during the pivoting of the chair 1 between the seat and the lying position, causes the first footrest 6b to swing in or out by an angle of preferably 150° to 180°.

Das Rückenteil-Verstellgetriebe 2 weist eine fest mit dem Sitzteil 3 verbundene Befestigungsplatte 51 mit einem daran angelenkten Schwenkhebel 48 auf, welcher des Weiteren über einen ersten Verbindungshebel 39 am Chassis 5 und über einen zweiten Verbindungshebel 38 am Rückenteil 4 angeschlossen ist.The back part adjusting mechanism 2 has a fastening plate 51 firmly connected to the seat part 3 with a pivoted lever 48 articulated thereon, which is also connected to the chassis 5 via a first connecting lever 39 and to the back part 4 via a second connecting lever 38 .

Das Sitzteil 3 ist mittels einer ersten 24 und einer zweiten Verlagerungseinheit 25 von einer zur Hinterkante des Sitzmöbels 1 verlagerten Sitzposition in eine zur Vorderkante des Sitzmöbels 1 verlagerten Liegeposition relativ zum Chassis 5 verschiebbar und in der Neigung verstellbar.The seat part 3 can be displaced relative to the chassis 5 by means of a first 24 and a second displacement unit 25 from a sitting position displaced towards the rear edge of the seating furniture 1 into a lying position displaced towards the front edge of the seating furniture 1 and the inclination can be adjusted.

Die Begriffe "Vorderkante des Sitzmöbels" und "Hinterkante des Sitzmöbels" beziehen sich auf die Perspektive einer auf dem Sitzmöbel aufsitzenden Person, dessen Beine nach vorne weisen und dessen Rücken nach hinten weist.The terms "front edge of seat" and "rear edge of seat" refer to the perspective of a person sitting on the chair, whose legs point forward and whose back points backwards.

Die erste Verlagerungseinheit 24 weist eine Schwenkführung auf, wobei ein vorderer 7 und ein hinterer Lenkerhebel 8 mit dem Sitzteil 3 und einem mit der zweiten Verlagerungseinheit 25 verbundenen Zwischenträger 26 eine Viergelenkkette bilden (Fig. 2).The first displacement unit 24 has a swivel guide, with a front 7 and a rear link lever 8 forming a four-bar linkage with the seat part 3 and an intermediate support 26 connected to the second displacement unit 25 ( 2 ).

Die Schwenkbewegung der ersten Verlagerungseinheit 24 in Richtung zur Vorderkante des Sitzmöbels 1 wird durch ein sitzteilseitiges Anschlagelement 27 blockiert (Fig. 5).The pivoting movement of the first displacement unit 24 in the direction of the front edge of the chair 1 is blocked by a stop element 27 on the seat part ( figure 5 ).

Die zweite Verlagerungseinheit 25 wird durch ein lineares oder durch ein annähernd lineares Führungssystem, vorzugsweise durch wenigstens eine Linearführung 44 in Form eines Zahnstangengetriebes mit entlang eines Zahnstangensegmentes 45 bewegbaren Zahnrädern 46, oder durch ein Hebelverstellgetriebe gebildet, wobei das Führungssystem, ausgehend von der Sitzposition des Sitzmöbels 1, entlang eines Bewegungspfades relativ zum Chassis 5 nach vorne beweglich ist, wobei der Bewegungspfad vorzugsweise linear ist und/oder der Bewegungspfad in Richtung nach vorne ansteigt (Fig. 4).The second displacement unit 25 is formed by a linear or an approximately linear guide system, preferably by at least one linear guide 44 in the form of a rack and pinion gear with gears 46 that can be moved along a rack and pinion segment 45, or by a lever adjustment mechanism, with the guide system, starting from the sitting position of the chair 1, is movable along a forward motion path relative to the chassis 5, the motion path preferably being linear and/or the forward motion path increasing ( 4 ).

Die erste 24 und die zweite Verlagerungseinheit 25 sind aneinander angebracht, wobei der Zwischenträger 26 mit den Zahnrädern 46 der Linearführung 44 verbunden ist und die Linearführung 44 des Weiteren mit dem Zahnstangensegment 45 am Chassis 5 angeschlossen ist, wodurch die erste Verlagerungseinheit 24 gegenüber dem Chassis 5 verschiebbar geführt ist.The first 24 and second displacement unit 25 are attached to each other, with the intermediate carrier 26 being connected to the gear wheels 46 of the linear guide 44 and the linear guide 44 being further connected to the rack segment 45 on the chassis 5, whereby the first displacement unit 24 is relative to the chassis 5 is slidably guided.

Die erste Verlagerungseinheit 24 ist mittels einer Zugfeder 47 kraftbeaufschlagt (Fig. 2, 4).The first displacement unit 24 is subjected to a force by means of a tension spring 47 ( 2 , 4 ).

Die Zugfeder 47 ist einerseits vorzugsweise mit dem Sitzteil 3 und andererseits vorzugsweise mit dem Zwischenträger 26 der ersten Verlagerungseinheit 24 gekoppelt.The tension spring 47 is preferably coupled to the seat part 3 on the one hand and preferably to the intermediate carrier 26 of the first displacement unit 24 on the other hand.

Der erste Linearaktuator 28 ist mit einem ersten Ende mit der ersten Verlagerungseinheit 24 über eine mit dem Zwischenträger 26 der ersten Verlagerungseinheit 24 verbundenen ersten Querstrebe 49 und mit einem zweiten Ende mit dem Fußteil-Verstellgetriebe 9 über eine mit dem Fußteil-Verstellgetriebe 9 verbundenen zweiten Querstrebe 50 gekoppelt (Fig. 2).The first linear actuator 28 is connected at a first end to the first displacement unit 24 via a first cross strut 49 connected to the intermediate support 26 of the first displacement unit 24 and at a second end to the foot part adjustment gear 9 via a second cross strut connected to the foot part adjustment gear 9 50 coupled ( 2 ).

Die erste Querstrebe 49 ist erfindungsgemäß sowohl relativ zum Chassis 5 als auch relativ zum Sitzteil 3 verlagerbar geführt.According to the invention, the first transverse strut 49 is guided in a displaceable manner both relative to the chassis 5 and relative to the seat part 3 .

Ein zweiter Linearaktuator 29 ist mit einem ersten Ende mit dem Chassis 5 und mit einem zweiten Ende mit der ersten Querstrebe 49 gekoppelt (Fig. 2).A second linear actuator 29 is coupled at a first end to the chassis 5 and at a second end to the first cross brace 49 ( 2 ).

Diese erfindungsgemäße Anordnung des ersten 28 und des zweiten Linearaktuators 29, bei welcher

  • der erste Linearaktuator 28 mit einem ersten Ende mit der sowohl relativ zum Chassis 5 als auch relativ zum Sitzteil 3 verlagerbar geführten ersten Querstrebe 49 und mit einem zweiten Ende mit dem Fußteil-Verstellgetriebe 9 über die mit dem Fußteil-Verstellgetriebe 9 verbundene zweite Querstrebe 50 gekoppelt ist, und
  • der zweite Linearaktuator 29 mit einem ersten Ende mit dem Chassis 5 und mit einem zweiten Ende mit der sowohl relativ zum Chassis 5 als auch relativ zum Sitzteil 3 verlagerbar geführten ersten Querstrebe 49 gekoppelt ist,
ermöglicht einen im folgenden beschriebenen, vorteilhaften Verstellablauf des Sitzteiles 3, des Fußteiles 6 und des Rückenteiles 4 zwischen der Sitz- und der Liegeposition eines erfindungsgemäßen Sitzmöbels 1.This inventive arrangement of the first 28 and the second linear actuator 29, in which
  • the first linear actuator 28 is coupled at a first end to the first transverse strut 49, which is guided so as to be displaceable both relative to the chassis 5 and relative to the seat part 3, and at a second end to the foot part adjustment gear 9 via the second cross strut 50 connected to the foot part adjustment gear 9 is and
  • the second linear actuator 29 is coupled at a first end to the chassis 5 and at a second end to the first transverse strut 49, which is guided so as to be displaceable both relative to the chassis 5 and relative to the seat part 3,
enables an advantageous adjustment process of the seat part 3, the foot part 6 and the back part 4 between the sitting and the lying position of a piece of seating furniture 1 according to the invention, as described below.

Bei einem Sitzmöbel 1 der vorliegenden Erfindung ist in der Ausgangsposition beziehungsweise der Sitzposition des Sitzmöbels 1 durch den zwischen dem Chassis 5 und der ersten Querstrebe 49 angelenkten zweiten Linearaktuator 29 die zweite Verlagerungseinheit 25 in ihrer Ausgangsposition gehalten, weiterhin ist durch den zwischen der ersten 49 und der zweiten Querstrebe 50 wirkenden ersten Linearaktuator 28 das Fußteil 6 mittels des zwischen der Sitzteillasche 42 und dem Fußteil-Verstellgetriebe 9 wirkenden Anschlagelements 41 in der eingeschwenkten Endposition gehalten, und die erste Verlagerungseinheit 24 ist durch die definierte Stellung des Fußteiles 6 und mittels des ersten Linearaktuators 28 in ihrer Schwenkposition definiert (Fig. 1, 2).In a piece of seating furniture 1 of the present invention, in the starting position or the sitting position of seating furniture 1, the second linear actuator 29, which is articulated between the chassis 5 and the first cross brace 49, holds the second displacement unit 25 in its starting position; The first linear actuator 28 acting on the second transverse strut 50 holds the foot part 6 in the swiveled-in end position by means of the stop element 41 acting between the seat part bracket 42 and the foot part adjusting mechanism 9, and the first displacement unit 24 is moved by the defined position of the foot part 6 and by means of the first linear actuator 28 defined in their pivot position ( 1 , 2 ).

Der erste Linearaktuator 28 erzeugt bei Betätigung einen linearen Hub, bestehend aus wenigstens einem ersten und einem zweiten Teilhub, wobei in einem durch den ersten Teilhub des ersten Linearaktuators 28 bewirkten ersten Verstellschritt des Sitzmöbels 1 von der Sitz- in die Liegeposition das Sitzteil 3 mittels der ersten Verlagerungseinheit 24 nach vorne verschoben und dabei der hintere Bereich des Sitzteiles 3 abgesenkt und der vordere Bereich des Sitzteiles 3 angehoben wird, so dass das Sitzteil 3 gegenüber der Sitzposition des Sitzmöbels 1 in der Neigung verstellt wird bis der hintere Lenkerhebel 8 der ersten Verlagerungseinheit 24 mit einem sitzteilseitigen Anschlagelement 27 in Kontakt kommt und die Schwenkbewegung der ersten Verlagerungseinheit 24 dadurch blockiert wird.When actuated, the first linear actuator 28 generates a linear stroke consisting of at least a first and a second partial stroke, whereby in a first adjustment step of the seating furniture item 1 from the sitting to the lying position caused by the first partial stroke of the first linear actuator 28, the seat part 3 is moved by means of the first displacement unit 24 is displaced forwards and the rear area of the seat part 3 is lowered and the front area of the seat part 3 is raised, so that the seat part 3 is adjusted in inclination relative to the sitting position of the seating furniture item 1 until the rear link lever 8 of the first displacement unit 24 comes into contact with a stop element 27 on the seat part side and the pivoting movement of the first displacement unit 24 is thereby blocked.

In dieser ersten, auch als "Loungeposition" bezeichneten Zwischenposition des Sitzmöbels 1 ist das Fußteil 6 noch nicht ausgefahren (Fig. 3, 4, 5).In this first intermediate position, also referred to as the "lounge position", the seating furniture item 1 is the foot section 6 is not yet extended ( 3 , 4 , 5 ).

Die Zugfeder 47 verkürzt sich während dieses ersten Verstellschrittes und unterstützt dadurch die Verstellbewegung des Sitzteiles 3, wodurch zuerst das Sitzteil 3, ohne eine Verschwenkung des Fußteiles 6 relativ zum Sitzteil 3, verstellt wird (Fig. 3, 4, 5).The tension spring 47 shortens during this first adjustment step and thereby supports the adjustment movement of the seat part 3, as a result of which the seat part 3 is adjusted first without pivoting the foot part 6 relative to the seat part 3 ( 3 , 4 , 5 ).

In einem durch den zweiten Teilhub des ersten Linearaktuators 28 bewirkten zweiten Verstellschritt des Sitzmöbels 1 von der Sitz- in die Liegeposition wird, unter Beibehaltung der am Ende des ersten Teilhubes erzielten Neigungs- und Verschiebeposition des Sitzteiles 3 relativ zum Chassis 5 und unter Beibehaltung der Position des Rückenteiles 4 relativ zum Sitzteil 3, ein Ausfahren des Fußteiles 6 relativ zum Sitzteil 3 bewirkt bis das Fußteil 6 die ausgeschwenkte Endposition und damit eine zweite, auch als "Relaxposition" bezeichnete Zwischenposition erreicht hat (Fig. 7).In a second adjustment step of the item of seating furniture 1 brought about by the second partial stroke of the first linear actuator 28 from the sitting to the lying position, the tilting and displacement position of the seat part 3 relative to the chassis 5 achieved at the end of the first partial stroke is maintained and the position is maintained of the back part 4 relative to the seat part 3, an extension of the foot part 6 relative to the seat part 3 causes until the foot part 6 has reached the pivoted end position and thus a second intermediate position, also referred to as a "relaxation position" ( 7 ).

Aufgrund dieses Verstellablaufs, bei welchem bei Betätigung des ersten Linearaktuators 28 in Verstellrichtung zur Liegeposition des Sitzmöbels 1, zur Vergrößerung des Abstandes der Sitzteilvorderkante 23 zur Aufstandsebene des Sitzmöbels 1 immer erst die Neigung des Sitzteiles 3 verstellt wird und danach erst das Fußteil 6 ausgefahren wird, kann für das ausfahrende Fußteil 6 ein gegenüber der Sitzposition des Sitzmöbels 1 größerer Schwenkraum zur Verfügung gestellt werden, wodurch die Verwendung eines längeren ersten Fußbrettes 6b ermöglicht wird.Due to this adjustment process, in which when the first linear actuator 28 is actuated in the adjustment direction to the lying position of the chair 1, to increase the distance between the front edge 23 of the seat part and the contact level of the chair 1, the inclination of the seat part 3 is always adjusted first and then the foot part 6 is extended, For example, a greater pivoting space can be made available for the extending foot part 6 in relation to the sitting position of the chair 1, which makes it possible to use a longer first foot board 6b.

Hierdurch wird, in Kombination mit der oben beschriebenen, erfindungsgemäßen Hebelgeometrie des Fußteil-Verstellgetriebes 9 für eine lange Beinauflagefläche in ausgeschwenkter Position des Fußteiles 6, eine derartige Liegelänge des ausgeschwenkten Fußteiles 6 erzielt, dass die Aufgabe, ein Sitzmöbel der gattungsgemäßen Art mit einer vollständigen Auflagefläche für die Füße des Benutzers zur Verfügung zu stellen, erfindungsgemäß somit gelöst wurde.In combination with the above-described lever geometry of the foot part adjustment mechanism 9 according to the invention for a long leg support surface in the swiveled-out position of the foot part 6, this achieves such a lying length of the swiveled-out foot part 6 that the task of creating a piece of seating furniture of the generic type with a complete support surface to provide for the user's feet available, was thus solved according to the invention.

In umgekehrter Verstellrichtung, d.h. in Richtung zur Sitzposition des Sitzmöbels 1, wird bei Betätigung des ersten Linearaktuators 28 aufgrund der zu überwindenden Federkraft der Zugfeder 47 zuerst das Fußteil 6 eingefahren bis das Anschlagelement 41 an der Anschlagfläche der Sitzteillasche 42 in Kontakt kommt, und danach das Sitzteil 3 entgegen der Federkraft der Zugfeder 47 in die Ausgangsposition verstellt.In the opposite direction of adjustment, i.e. in the direction of the seated position of the chair 1, when the first linear actuator 28 is actuated, due to the spring force of the tension spring 47 to be overcome, the foot part 6 is first retracted until the stop element 41 comes into contact with the stop surface of the seat part strap 42, and then the Seat part 3 adjusted against the spring force of the tension spring 47 in the starting position.

Durch einen durch Betätigung des zweiten Linearaktuators 29 erzeugten linearen Hub wird ein dritter Verstellschritt des Sitzmöbels 1 von der Sitz- in die Liegeposition bewirkt, wobei während dieses Verstellschrittes mittels der Linearführung 44 ein Verschieben des Sitzteiles 3 relativ zum Chassis 5 nach vorne und dadurch eine mit der Verschiebebewegung des Sitzteiles 3 gekoppelte, wandfreie Verschwenkung des Rückenteiles 4 relativ zum Sitzteil 3 erfolgt (Fig. 8).A linear stroke generated by actuation of the second linear actuator 29 causes a third adjustment step of the chair 1 from the sitting to the lying position, with during During this adjustment step, the seat part 3 is displaced forwards relative to the chassis 5 by means of the linear guide 44 and, as a result, the back part 4 is pivoted relative to the seat part 3 without any problems, coupled with the displacement movement of the seat part 3 ( 8 ).

Alle vorgenannten, durch den ersten 28 und den zweiten Linearaktuator 29 bewirkten Verstellschritte können separat und in beliebiger Reihenfolge oder gegebenenfalls auch gleichzeitig ausgeführt werden, wobei eine voneinander unabhängig zu betätigende Verstellung des Rückenteiles 4 und des Fußteiles 6 und eine voneinander unabhängig zu betätigende Verstellung des Rückenteiles 4 und des Sitzteiles 3 gewährleistet ist, so dass in jeder Verstellposition des Sitzteiles 3 oder des Fußteiles 6 eine wandfreie Verstellung des Rückenteiles 4 in jede gewünschte Schwenkposition möglich ist und in jeder Verstellposition des Rückenteiles 4 das Sitzteil 3 oder das Fußteil 6 in jede gewünschte Position verschwenkt werden können.All of the aforementioned adjustment steps effected by the first 28 and the second linear actuator 29 can be carried out separately and in any order or, if necessary, also simultaneously, with an adjustment of the back part 4 and the foot part 6 to be actuated independently of one another and an adjustment of the back part to be actuated independently of one another 4 and the seat part 3 is guaranteed, so that in every adjustment position of the seat part 3 or the foot part 6, the back part 4 can be adjusted without any problems to any desired pivoting position and in every adjustment position of the back part 4 the seat part 3 or the foot part 6 can be moved to any desired position can be pivoted.

Die Erfindung ist nicht auf das Ausführungsbeispiel beschränkt, sondern im Rahmen der Offenbarung vielfach variabel.The invention is not limited to the exemplary embodiment, but is variable in many ways within the scope of the disclosure.

Alle in der Beschreibung und/oder Zeichnung offenbarten Einzel- und Kombinationsmerkmale werden als erfindungswesentlich angesehen.All individual and combination features disclosed in the description and/or drawing are regarded as essential to the invention.

Claims (22)

  1. Piece of seating furniture (1), comprising a chassis (5), a seat part (3) which can be pivoted in inclination, a back part (4), and a foot part (6), which can be pivoted out and is connected to the seat part (3) via at least one foot part adjustment mechanism (9),
    - wherein the piece of seating furniture (1) is adjustable between a sitting and a reclining position,
    - for which purpose, at least during a sub-phase of the adjustment of the piece of seating furniture (1) from the sitting into the reclining position, the seat part (3) is displaced forwards relative to the chassis (5),
    - wherein, in the sitting position, the foot part (6) is pivoted in substantially below the seat part (3) and, in the reclining position, the foot part (6) is pivoted out in front of the seat part (3) in such a way that the seat part (3) is extended by the foot part (6),
    - wherein, in the sitting position of the piece of seating furniture (1), a first footrest (6b) fastened to a first foot part fitting (6a) of the foot part (6) is arranged oblique or parallel to the seat part (3) and is at an angle of 60° to 90° to a vertical plane defined by a front edge (23) of the seat part,
    - wherein, in the sitting position of the piece of seating furniture (1), a first (10) and/or second (11) articulated lever is articulated to the seat part (3) and a longitudinal axis formed between two end articulation points (18, 19) of at least one of the first (10) and/or second (11) articulated lever is arranged oblique to the seat part (3), and the end articulation point (18) of this articulated lever facing the seat part (3) is closer than the end articulation point (19) of this articulated lever remote from the seat part (3) to a vertical plane defined by the front edge (23) of the seat part,
    - wherein, in the sitting position of the piece of seating furniture (1), a third (12) and fourth (13) articulated lever have an orientation in which a longitudinal axis formed between the two end articulation points (20, 21) of at least one of the third (12) and/or fourth (13) articulated lever is arranged oblique to the seat part (3), and the end articulation point (21) of this articulated lever remote from the seat part (3) is closer than the end articulation point (20) of this articulated lever facing the seat part (3) to a vertical plane defined by the front edge (23) of the seat part,
    - wherein a fifth (14) and sixth (15) articulated lever are each articulated to the third (12) and/or fourth (13) articulated lever, and at least one of the fifth (14) and/or sixth (15) articulated lever is articulated to a second foot part fitting (6c) coupled to the first foot part fitting (6a) and forms a four-bar chain together with the first (6a) and second (6c) foot part fitting and a connecting lever (37),
    - wherein the third (12) and fourth (13) articulated levers are connected, by the end articulation point (20, 22) thereof facing the seat part (3) in the sitting position of the piece of seating furniture (1), each to the fifth (14) or each to the sixth (15) articulated lever,
    - a control lever (17) is articulated to the first (10) or second (11) articulated lever and to the third (12) or fourth (13) articulated lever,
    - a coupling lever (16) is articulated to the first (10) and/or second (11) and/or to the third (12) and/or fourth (13) articulated lever,
    - wherein, during a sub-phase of the adjustment of the piece of seating furniture (1) from the sitting into the reclining position, the coupling lever (16) is lowered relative to the seat part (3), the articulation point (30) of one of the fifth (14) and/or sixth (15) articulated lever to the second foot part fitting (6c) simultaneously being raised relative to the coupling lever (16),
    - wherein at least a first (28) and second (29) linear actuator are provided to adjust the seat part (3), foot part (6) and back part (4) between the sitting and the reclining position of the piece of seating furniture (1),
    - wherein the first linear actuator (28), when actuated, produces a linear stroke consisting of at least a first and second sub-stroke,
    - wherein the first linear actuator (28), during the adjustment of the piece of seating furniture (1) from the sitting into the reclining position, causes, by way of a first sub-stroke, a forward displacement of the seat part (3) relative to the chassis (5) and a simultaneous inclination adjustment of the seat part (3), no extension or retraction of the foot part (6) relative to the seat part (3) occurring during said first sub-stroke of the first linear actuator (28), and
    - wherein the first linear actuator (28), during the adjustment of the piece of seating furniture (1) from the sitting into the reclining position, causes, by way of a second sub-stroke following the first sub-stroke, an extension of the foot part (6) relative to the seat part (3).
  2. Piece of seating furniture (1) according to claim 1, characterised in that, in the sitting position of the piece of seating furniture (1), the first footrest (6b) is arranged oblique or parallel to the seat part (3) and is at an angle of 60° to 90° to a vertical plane defined by the front edge (23) of the seat part.
  3. Piece of seating furniture (1) according to either claim 1 or claim 2, characterised in that the first footrest (6b) is pivoted through an angle of 150° to 180° during the adjustment of the piece of seating furniture (1) from the sitting into the reclining position.
  4. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that
    - the first (6a) and second (6c) foot part fitting are pivotably interconnected,
    - the fifth (14) and sixth (15) articulated lever are articulated at a distance from one another to the second foot part fitting (6c),
    - one of the fifth (14) and/or sixth (15) articulated lever is extended beyond the region of its articulation point to the second foot part fitting (6c), and is articulated at its free end to the first end of the connecting lever (37), the second end of which is articulated to the first foot part fitting (6a).
  5. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that
    - during a sub-phase of the adjustment of the piece of seating furniture (1) from the sitting into the reclining position, the coupling lever (16) is lowered relative to the seat part (3), the articulation point (30) of one of the fifth (14) and/or sixth (15) articulated lever to the second foot part fitting (6c) simultaneously being raised relative to the coupling lever (16), and
    - during a further sub-phase of the adjustment of the piece of seating furniture (1) from the sitting into the reclining position, the coupling lever (16) is raised relative to the seat part (3), the articulation point (30) of one of the fifth (14) and/or sixth (15) articulated lever to the second foot part fitting (6c) simultaneously being lowered relative to the coupling lever (16).
  6. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that, during the adjustment of the piece of seating furniture (1) from the sitting into the reclining position, one of the first (10) and/or second (11) articulated lever is pivoted relative to one of the third (12) and/or fourth (13) articulated lever, through an angle of at least 150°, preferably through an angle of more than 200°.
  7. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that the first (10) and second (11) articulated lever are each articulated to a front region of the seat part (3) and each to the coupling lever (16), the third (12) and fourth (13) articulated lever are each articulated to the coupling lever (16) and each to the sixth articulated lever (15), one of the third (12) and/or fourth (13) articulated lever is extended beyond its point of articulation to the coupling lever (16) and is articulated at its free end to a first end of the control lever (17), the second end of which is articulated to a central region of one of the first (10) and/or second (11) articulated lever, the third articulated lever (12), in the sitting position of the piece of seating furniture (1), is positioned closer than the fourth articulated lever (13) to a vertical plane defined by the front edge (23) of the seat part, and the fifth articulated lever (14) is articulated to a central region of the third articulated lever (12) and to the second foot part fitting (6c).
  8. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that the front edge (43) of the first footrest (6b) follows a flat movement curve close to the front edge (23) of the seat part during a first phase of pivoting from the sitting into the reclining position, and the movement curve of the articulation point (40) of the first foot part fitting (6a) to the second foot part fitting (6c) extends in an ascending manner with respect to a horizontal plane, defined by said articulation point (40) in the sitting position of the piece of seating furniture (1), throughout the pivoting of the foot part (6) from the sitting into the reclining position.
  9. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that the foot part (6) comprises a first footrest (6b) fastened to the first foot part fitting (6a) and a second footrest (6d) fastened to the second foot part fitting (6c), the first (6a) and second foot part fitting (6c) are coupled to one another in such a way that the first footrest (6b) fastened to the first foot part fitting (6a) is moveable from the sitting position, in which the second footrest (6d) fastened to the second foot part fitting (6c) preferably forms a front panel and the first footrest (6b) is pivoted in, preferably substantially parallel, below the seat part (3), into the reclining position, in which the second footrest (6d) forms, together with the first footrest (6b), an extension of the seat part (3) adjoining the seat part (3), the first footrest (6b) being pivoted into an approximately horizontal position extending an end of the pivoted-out second footrest (6d) remote from the seat part (3).
  10. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that the fifth (14) and sixth (15) articulated lever form, together with the third (12) or fourth (13) articulated lever and the second foot part fitting (6c), an intersecting four-bar chain (33, 34, 35, 36), in which an imaginary connecting line (34), passing through the articulation points (31, 32) of the fifth articulated lever (14) to the third (12) or fourth (13) articulated lever and to the second foot part fitting (6c), and an imaginary connecting line (35), passing through the articulation points (20a, 30) of the sixth articulated lever (15) to the third (12) or fourth (13) articulated lever and to the second foot part fitting (6c), intersect.
  11. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that the first linear actuator (28), during the adjustment of the piece of seating furniture (1) from the sitting into the reclining position, causes, by way of the second sub-stroke following the first sub-stroke of the first linear actuator (28), an extension of the foot part (6) relative to the seat part (3).
  12. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that the first linear actuator (28), during the adjustment of the piece of seating furniture (1) from the sitting into the reclining position, by way of a second sub-stroke following the first sub-stroke of the first linear actuator (28), while maintaining the inclination and displacement position of the seat part (3) relative to the chassis (5) achieved at the end of the first sub-stroke and while maintaining the position of the back part (4) relative to the seat part (3), causes an extension of the foot part (6) relative to the seat part (3).
  13. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that
    - a first (28) and second (29) linear actuator are provided to adjust the seat part (3), foot part (6) and back part (4) between the sitting and the reclining position of the piece of seating furniture (1),
    - wherein the first linear actuator (28), when actuated, produces a linear stroke consisting of at least a first and second sub-stroke,
    - wherein the first linear actuator (28), during the adjustment of the piece of seating furniture (1) from the sitting into the reclining position, causes, by way of a first sub-stroke, a forward displacement of the seat part (3) relative to the chassis (5) and a simultaneous inclination adjustment of the seat part (3), no extension or retraction of the foot part (6) relative to the seat part (3) occurring during said first sub-stroke of the first linear actuator (28), and
    - wherein the first linear actuator (28), by way of a second sub-stroke following the first sub-stroke of the first linear actuator (28), causes an extension of the foot part (6) relative to the seat part (3),
    - wherein, during the adjustment of the piece of seating furniture (1) from the sitting into the reclining position, the second linear actuator (29) generates a linear stroke when actuated and thus, while maintaining the position of the foot part (6) relative to the seat part (3), causes a forward displacement of the seat part (3) relative to the chassis (5), wherein simultaneously with the displacement movement of the seat part (3) relative to the chassis (5) a pivoting, coupled thereto, of the back part (4) relative to the seat part (3) occurs.
  14. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that
    - the seat part (3) is displaced relative to the chassis (5) via a first (24) and second (25) displacement unit to adjust the piece of seating furniture (1) between the sitting and the reclining position,
    - the first displacement unit (24) is attached to the seat part (3) and to the second displacement unit (25), and the second displacement unit (25) is further attached to the chassis (5),
    - the first displacement unit (24) being guided displaceably relative to the chassis (5).
  15. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that
    - the first displacement unit (24) comprises a pivot guide, a front (7) and a rear (8) link arm forming a four-bar chain together with the seat part (3) and an intermediate support (26) connected to the second displacement unit (25),
    - the pivoting movement of the first displacement unit (24) towards the front edge of the piece of seating furniture (1) being blocked by a stop element (27) on the seat part side.
  16. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that the second displacement unit (25) is formed by a linear or approximately linear guide system, preferably by at least one linear guide (44) in the form of a rack-and-pinion gear or by a lever adjustment mechanism, and the guide system, starting from the sitting position of the piece of seating furniture (1), is movable forwards along a movement path relative to the chassis (5), the movement path preferably rising in the forward direction.
  17. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that the first displacement unit (24) is loaded with force by at least one tension spring (47), and the tension spring (47) is preferably coupled to the seat part (3) and preferably coupled to the intermediate support (26) of the first displacement unit (24).
  18. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that the second linear actuator (29) is coupled at a first end to the chassis (5) and at a second end to the first displacement unit (24) via a first transverse strut (49) connected to the intermediate support (26) of the first displacement unit (24).
  19. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that the first linear actuator (28) is coupled at a first end to the first displacement unit (24), via the first transverse strut (49) connected to the intermediate support (26) of the first displacement unit (24), and at a second end to the foot part adjustment mechanism (9), via a second transverse strut (50) connected to the foot part adjustment mechanism (9).
  20. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that the first transverse strut (49) is guided displaceably relative to the chassis (5) and relative to the seat part (3).
  21. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that
    - the second linear actuator (29) is coupled at a first end to the chassis (5) and at a second end to the first transverse strut (49), which is guided displaceably relative to the chassis (5) and relative to the seat part (3), and
    - the first linear actuator (28) is coupled at a first end to the first transverse strut (49), which is guided displaceably relative to the chassis (5) and relative to the seat part (3), and at a second end to the foot part adjustment mechanism (9), via a second transverse strut (50) connected to the foot part adjustment mechanism (9).
  22. Piece of seating furniture (1) according to at least one of the preceding claims, characterised in that, during the adjustment of the piece of seating furniture (1) from the reclining into the sitting position,
    - a pivoting movement of the foot part (6) caused by the first sub-stroke of the first linear actuator (28) is blocked by a stop element (41), and,
    - by generating a second sub-stroke following the first sub-stroke of the first linear actuator (28), a rearward displacement of the seat part (3) relative to the chassis (5) and a simultaneous inclination adjustment of the seat part (3) are caused.
EP20750573.6A 2019-06-29 2020-06-28 Seating furniture having a wall-away function and a foot part that can be pivoted out Active EP3965616B8 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019117623 2019-06-29
PCT/DE2020/100559 WO2021000993A1 (en) 2019-06-29 2020-06-28 Seating furniture having a wall-away function and a foot part that can be pivoted out

Publications (3)

Publication Number Publication Date
EP3965616A1 EP3965616A1 (en) 2022-03-16
EP3965616B1 true EP3965616B1 (en) 2023-05-31
EP3965616B8 EP3965616B8 (en) 2023-07-05

Family

ID=71943889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20750573.6A Active EP3965616B8 (en) 2019-06-29 2020-06-28 Seating furniture having a wall-away function and a foot part that can be pivoted out

Country Status (8)

Country Link
US (1) US11583083B2 (en)
EP (1) EP3965616B8 (en)
CN (1) CN114080175B (en)
DE (1) DE112020003153A5 (en)
DK (1) DK3965616T5 (en)
ES (1) ES2947869T3 (en)
PL (1) PL3965616T3 (en)
WO (1) WO2021000993A1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
EP4140361A1 (en) 2021-08-31 2023-03-01 Ferdinand Lusch GmbH Pivoting fitting of a chair for adjusting a foot part and chair with adjustable foot part

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US11737561B2 (en) * 2019-06-29 2023-08-29 M. Schuster Patentverwertungs Gmbh Seating furniture having dual-motor wall-away function
CN214284112U (en) * 2020-08-07 2021-09-28 张孝兆 Bracket extension device, frame body with same and chair
WO2023046239A1 (en) * 2021-09-27 2023-03-30 Michael Schuster Piece of seating furniture with a dual-motor wallaway function and separate seat-depth and seat-inclination adjustment
WO2023046243A1 (en) * 2021-09-27 2023-03-30 Michael Schuster Item of seating furniture with separate seat depth, seat incline and footrest adjustment

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Also Published As

Publication number Publication date
US11583083B2 (en) 2023-02-21
CN114080175B (en) 2024-05-07
DE112020003153A5 (en) 2022-03-17
ES2947869T3 (en) 2023-08-23
DK3965616T3 (en) 2023-07-31
DK3965616T5 (en) 2023-11-20
CN114080175A (en) 2022-02-22
US20220312967A1 (en) 2022-10-06
WO2021000993A1 (en) 2021-01-07
EP3965616B8 (en) 2023-07-05
PL3965616T3 (en) 2023-10-09
EP3965616A1 (en) 2022-03-16

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