EP3539421A1 - Seat shell with a one-piece formed wood bowl - Google Patents

Seat shell with a one-piece formed wood bowl Download PDF

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Publication number
EP3539421A1
EP3539421A1 EP19000122.2A EP19000122A EP3539421A1 EP 3539421 A1 EP3539421 A1 EP 3539421A1 EP 19000122 A EP19000122 A EP 19000122A EP 3539421 A1 EP3539421 A1 EP 3539421A1
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EP
European Patent Office
Prior art keywords
wood
seat
layers
shell
longitudinal direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19000122.2A
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German (de)
French (fr)
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EP3539421B1 (en
Inventor
Dieter Kusch
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Kusch+co GmbH
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Kusch and Co GmbH and Co KG
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Publication date
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Priority to PL19000122T priority Critical patent/PL3539421T3/en
Publication of EP3539421A1 publication Critical patent/EP3539421A1/en
Application granted granted Critical
Publication of EP3539421B1 publication Critical patent/EP3539421B1/en
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/12—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats with shell-shape seat and back-rest unit, e.g. having arm rests
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C5/00—Chairs of special materials
    • A47C5/14—Chairs of special materials characterised by the use of laminated wood
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C11/00—Benches not otherwise provided for
    • A47C11/005—Benches not otherwise provided for having multiple separate seats
    • 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
    • A47C7/02—Seat parts
    • A47C7/16—Seats made of wooden, plastics, or metal sheet material; Panel seats
    • 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
    • A47C7/02—Seat parts
    • A47C7/24—Upholstered seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/06—Manufacture of central layers; Form of central layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/08—Manufacture of shaped articles; Presses specially designed therefor

Definitions

  • the invention relates to a seat shell, comprising a one-piece molded wood shell with a seat part and a back part according to the preamble of claim 1.
  • Out DE 43 16 057 A1 is a one-piece seat shell with a back and a seat known.
  • the known seat is made of a resilient material to allow the required for a comfortable sitting flexibility of the back of the seat.
  • the back of the seat can thus easily pivot under load from a person leaning against, but the support effect of the seat in the region of the spine of the person should have sufficient stability.
  • the well-known seat is a shaped wood panel of several crosswise glued together wood layers. It can be surface-treated or upholstered with a suitable varnish.
  • a lacquered seat shell has the following veneer structure. It has a cover layer, which consists of a longitudinal layer of wood, which is glued with a transverse position, the longitudinal position before pressing is sanded. This cover layer is arranged on both sides of the seat. Between the cover layers are on both sides of two successive glued longitudinal veneers and in the neutral zone of the shell is provided a transverse position.
  • the longitudinal layers preferably have a thickness of 1.5 mm and the transverse layers have a thickness of 1.1 mm.
  • a shell which is continuously padded, preferably consists of two longitudinal veneers, one transverse veneer, two longitudinal veneers, one transverse veneer and two longitudinal veneers, the longitudinal veneers having a thickness of 1.5 mm and the transverse veneers having a thickness of 1.1 mm.
  • arcuate cuts are provided to increase the flexibility of the shell.
  • the object of the invention is therefore to provide a seat according to the preamble of claim 1, which has a good flexibility for a comfortable sitting while the spine is sufficiently supported when leaning back.
  • a seat shell which comprises a one-piece or one-piece molded wood shell with a seat part, a back part and a bent transition region connecting the seat part and the back part.
  • a shaped wooden shell is preferably ergonomically shaped and may be attached individually or in a number to a frame (not shown). suspension characteristics the back part against an angled connected to the back part seat part are substantially determined by the curved transition region and its structural design.
  • the shaped wood shell has a transverse cutout bounded by edge-side webs in the transition region and / or the back part, which is upholstered as a breakthrough or is upholstered as a transverse slot.
  • the breakthrough favors a cleaning effect for items deposited on the seat, such as beverage cans, which may fall over the opening acting as a breakthrough opening. An accidental placement on third party items is thereby largely avoided. Furthermore, a ventilation effect is created, which improves the comfort of the seat.
  • the spring action is improved in cooperation with the cutout by a veneer structure with at least nine layers of wood, the quasi-sandwich structure realized by at least two middle wood layers in the transverse direction, between which at least one middle wood layer is arranged in the longitudinal direction, and the at least two middle wood layers have a greater thickness in the transverse direction than outer wood layers in the transverse direction.
  • the at least two middle layers of wood in the transverse direction of greater thickness increase the overall structure and the rigidity of the shell such that the cutout is bridged, whereby, however, the outer layers of wood continue to move away from the core and are thus exposed to higher tensile and compressive loads. This can be compensated by external wood layers in the transverse direction and longitudinal direction.
  • the veneer structure according to the invention makes it possible for a padded seat shell to offer comparable seat comfort with flexibility, regardless of whether the cutout is free-standing or overstuffed.
  • a user can be provided with a different optical impression - with or without access opening - a seat with substantially the same seat comfort. This also applies if the seat shell is exposed to high loads due to the use. Further embodiments of the invention are described in the following description and the dependent claims.
  • the invention relates to a seat shell with a one-piece shaped wood shell 1.
  • the shaped wood shell 1 is formed with a seat part 2 and a back part 3, which has a bend along a bending axis in its transition region 4.
  • the back part 3 may have a contour adapted to the human spine.
  • Fig. 3 shows over an arrow a curvature of the back part.
  • the molded wood shell 1 has a veneer structure of a plurality of mutually glued wood layers 10 to 15, as below FIGS. 7 to 10 will be described in detail.
  • This veneer structure comprises at the front and rear of the molded wood shell 1 each a cover layer 15 of a wood layer in the longitudinal direction. Between the cover layers 15, a number of middle and outer layers of wood 10 to 14 in the longitudinal or transverse direction is arranged. The molded wooden shell 1 is overstuffed, as described below.
  • the molded wood shell 1 has a transverse, limited by edge-side webs 5 cutout 6, which is formed in the transition region 4 and / or the back part 3.
  • the cutout 6 as an opening, preferably extending into the back part 3, for forming, for example, a through-opening formed.
  • the cutout 6 is preferably designed as a rectangular opening 7 with a length which amounts to 50 to 70% of the shell width in the region of the cutout 6.
  • the cutout 6 may have a width which is 20 to 40% of the length of the cutout 6.
  • the molded wood shell 1 to the seat such cutout 6 is preferably padded freestanding and thus remains as a free space of a Studentspolsterung.
  • Fig. 4 to Fig. 6 show a second embodiment with a cutout 6, which can be padded covering a continuous overholstery of the molded wood shell 1.
  • the cutout 6 is preferably formed by a double-T-beam-shaped transverse slot 8.
  • the contour of such a transverse slot 8 is similar to the contour of a rectangular opening 7, whereby 1 comparable material recesses are created in the core of the molded wood shell with similar effects on the flexibility in the construction of the molded wood shell 1 under load.
  • the positioning of the rectangular opening 7 or the transverse slot 8 as a cutout 6 in the construction of the molded wood shell 1 is preferably the same.
  • mounting holes 9 for attachment of brackets (not shown) for a foot or a pedestal (not shown) may be provided.
  • the veneer structure comprises at least nine layers of wood 10 to 15 with at least two middle wood layers 11 in the transverse direction, between which at least one middle wood layer 10 is arranged in the longitudinal direction, and the at least two middle wood layers 11 in the transverse direction have a greater thickness than outer wood layers 14 in the transverse direction and / or optionally outer wood layers 12, 13, 15 in longitudinal direction.
  • At least two outer wood layers 12, 13 glued to each other can lie in the longitudinal direction, as in FIG Fig. 7 shown.
  • the two cover layers 15 may each comprise at least two successively glued wood layers in the longitudinal direction.
  • the fiber course of a wooden layer 10, 12, 13, 15 in the longitudinal direction preferably runs parallel to the seat pan mirror plane, and the fiber path of a wooden layer 11, 14 in the transverse direction preferably runs transversely to the seat pan mirror plane for a cross-wise gluing.
  • the thickness of the middle wood layers 11 in the transverse direction is preferably 1.4 to 1.8 mm, more preferably 1.5 mm, while the thickness of the middle wood layer 10 is preferably 1.0 to 1.3 mm in the longitudinal direction, especially preferably at 1.2 mm.
  • the one middle wood layer 10 in the longitudinal direction may be double-layered, as in FIG Fig. 8 is shown.
  • the thickness of outer wood layers 14 in the transverse direction and of outer wood layers 12, 13, 15 in the longitudinal direction can be in the range of 1.0 to 1.3 mm, particularly preferably 1.2 mm.
  • the thickness of outer wood plies 12, 13, 15 in the longitudinal direction is equal to the thicknesses of outer wood plies 14 in the transverse direction.
  • the thicknesses of the inner 10 and outer 12, 13, 15 wood layers in the longitudinal direction can be the same.
  • the arrangement of wood plies 11 to 15 is preferably provided on both sides in mirror image symmetry with respect to the at least one middle wood ply 10 in the longitudinal direction.
  • the thickness (n) of one or more of the wood layers 10 to 15 in the direction of the upper and / or lower edge of the molded wood shell 1 is reduced relative to the transition region 4.
  • the veneer structure of the shaped wood shell 1 of a plurality of preferably crosswise sized wood layers is according to FIGS. 7 to 10 in detail as follows.
  • Fig. 7 follow, starting from a central wood layer 10 in the longitudinal direction to both sides in each case the middle wood layer 11 in the transverse direction, two outer wood layers 12, 13 in the longitudinal direction, an outer wood layer 14 in the transverse direction and a cover layer 15 as an outer wood layer in the longitudinal direction.
  • This veneer sequence is glued.
  • Fig. 8 follow, starting from two middle layers of wood 10 in the longitudinal direction to both sides of each of the middle layer of wood 11 in the transverse direction, two outer layers of wood 12, 13 in the longitudinal direction, an outer layer of wood 14 in the transverse direction and a cover layer 15 as an outer layer of wood in the longitudinal direction.
  • This veneer structure is glued.
  • the edges of the molded wood shell 1 can be provided with a chamfer.
  • Fig. 9 follow, starting from a central wood layer 10 in the longitudinal direction to both sides in each case the middle wood layer 11 in the transverse direction, an outer wood layer 12 in the longitudinal direction, an outer wood layer 14 in the transverse direction, an outer wood layer 13 in the longitudinal direction and a cover layer 15 as an outer wood layer in the longitudinal direction.
  • This veneer sequence is glued.
  • Fig. 10 follow from a central wood ply 10 in the longitudinal direction both sides of the middle wood layer 11 in the transverse direction, an outer wood layer 14 in the transverse direction, an outer wood layer 12 in the longitudinal direction and a cover layer 15 as an outer layer of wood in the longitudinal direction.
  • This veneer sequence is glued.
  • the wood layers 10 to 15 can be made of beech molded plywood moldings.
  • the shaped wood shells 1 are preferably coated with a full cushion, the opening 7 remains as a free space, while the transverse slot 8 is over-padded to adapt to the seat comfort.
  • the seat shell with the molded wooden shell 1 may be provided as part of a chair or a bench, wherein a bank of a number of seats may be attached to a common frame frame, as in Fig. 11 shown.
  • Fig. 11 shows seat shells as seats 17, 18 on a bench 16, wherein the seat 17 has a padded cutout 20.
  • the attachment of the individual seat shells to the frame frame can be in the form of a cantilever to provide a resilient frame frame.
  • Such seats are preferably used in waiting areas such as airports, train stations, public buildings and the like, the number of seats is selectable. According to their intended use such seats are stable perform, especially because the seats are regularly misused as a place to sleep or as a storage for luggage and thus significantly burdened.
  • the intended cutout 6, especially in training as a breakthrough, can bring the desired success, to avoid filing.

Abstract

Sitzschale, umfassend eine einstückige Formholzschale (1) mit einem Sitzteil (2) und einem Rückenteil (3), die in ihrem Übergangsbereich (4) eine Biegung entlang einer Biegeachse aufweist, die Formholzschale (1) einen Furnieraufbau aus mehreren aufeinander geleimten Holzlagen aufweist, wobei vorn und hinten der Formholzschale (1) jeweils eine Decklage aus einer Holzlage in Längsrichtung angeordnet ist und zwischen den Decklagen eine Anzahl mittlerer und äußerer Holzlagen in Längs- oder Querrichtung angeordnet ist, und die Formholzschale (1) überpolstert ist, wobei die Formholzschale (1) einen querverlaufenden, durch randseitige Stege (5) begrenzten Ausschnitt (6) in dem Übergangsbereich (4) und/oder dem Rückenteil (3) aufweist und der Furnieraufbau mindestens neun Holzlagen umfasst mit mindestens zwei mittleren Holzlagen in Querrichtung, zwischen denen mindestens eine mittlere Holzlage in Längsrichtung angeordnet ist, und die mindestens zwei mittleren Holzlagen in Querrichtung eine größere Stärke besitzen als äußere Holzlagen in Querrichtung.Seat shell comprising a one-piece molded wood shell (1) with a seat part (2) and a back part (3), which has a bend along a bending axis in its transition region (4), the molded wood shell (1) has a veneer structure of several layers of wood glued together, wherein the front and rear of the shaped wood shell (1) each a cover layer of a wood layer is arranged in the longitudinal direction and between the cover layers, a number of middle and outer layers of wood in the longitudinal or transverse direction is arranged, and the molded wood shell (1) is padded, the molded wood shell ( 1) has a transverse cutout (6) bounded by edge-side webs (5) in the transition region (4) and / or the back part (3) and the veneer structure comprises at least nine wood layers with at least two middle wood layers in the transverse direction, between which at least one middle wood layer is arranged longitudinally, and the at least two middle layers of wood in Querrichtu ng have a greater strength than outer wood layers in the transverse direction.

Description

Die Erfindung betrifft eine Sitzschale, umfassend eine einstückige Formholzschale mit einem Sitzteil und einem Rückenteil nach dem Oberbegriff des Anspruchs 1.The invention relates to a seat shell, comprising a one-piece molded wood shell with a seat part and a back part according to the preamble of claim 1.

Aus DE 43 16 057 A1 ist eine einstückige Sitzschale mit einem Rückenteil und einer Sitzfläche bekannt. Die bekannte Sitzschale besteht aus einem federnden Material, um die für ein bequemes Sitzen geforderte Flexibilität des Rückenteils der Sitzschale zu ermöglichen. Der Rücken der Sitzschale kann sich folglich bei Belastung durch eine sich gegenlehnende Person leicht verschwenken, wobei allerdings die Stützwirkung der Sitzschale im Bereich der Wirbelsäule der Person eine ausreichende Stabilität besitzen sollte.Out DE 43 16 057 A1 is a one-piece seat shell with a back and a seat known. The known seat is made of a resilient material to allow the required for a comfortable sitting flexibility of the back of the seat. The back of the seat can thus easily pivot under load from a person leaning against, but the support effect of the seat in the region of the spine of the person should have sufficient stability.

Die bekannte Sitzschale ist eine geformte Holzplatte aus mehreren kreuzweise aufeinander geleimten Holzlagen. Sie kann mit einem geeigneten Lack oberflächenvergütet oder mit Polster versehen werden. Eine lackierte Sitzschale hat folgenden Furnieraufbau. Sie weist eine Decklage auf, die aus einer Holzlage in Längsrichtung besteht, die mit einer Querlage verleimt ist, wobei die Längslage vor dem Verpressen geschliffen wird. Diese Decklage ist auf beiden Seiten der Sitzschale angeordnet. Zwischen den Decklagen liegen zu beiden Seiten zwei aufeinander geleimte Längsfurniere und in der neutralen Zone der Schale ist eine Querlage vorgesehen. Die Längslagen haben vorzugsweise eine Stärke von 1,5 mm und die Querlagen eine Stärke von 1,1 mm.The well-known seat is a shaped wood panel of several crosswise glued together wood layers. It can be surface-treated or upholstered with a suitable varnish. A lacquered seat shell has the following veneer structure. It has a cover layer, which consists of a longitudinal layer of wood, which is glued with a transverse position, the longitudinal position before pressing is sanded. This cover layer is arranged on both sides of the seat. Between the cover layers are on both sides of two successive glued longitudinal veneers and in the neutral zone of the shell is provided a transverse position. The longitudinal layers preferably have a thickness of 1.5 mm and the transverse layers have a thickness of 1.1 mm.

Eine Schale, die durchgehend überpolstert ist, besteht vorzugsweise aus zwei Längsfurnieren, einem Querfurnier, zwei Längsfurnieren, einem Querfurnier und zwei Längsfurnieren, wobei die Längsfurniere eine Stärke von 1,5 mm und die Querfurniere eine Stärke von 1,1 mm haben.A shell, which is continuously padded, preferably consists of two longitudinal veneers, one transverse veneer, two longitudinal veneers, one transverse veneer and two longitudinal veneers, the longitudinal veneers having a thickness of 1.5 mm and the transverse veneers having a thickness of 1.1 mm.

In dem Rückenteil einer solchen Sitzschale sind bogenförmige Einschnitte vorgesehen, um die Flexibilität der Schale zu vergrößern. Bei Belastung des Rückenteils durch eine sich gegen das Rückenteil lehnende Person spreizen sich die von den Einschnitten begrenzten Segmente und treten schuppenartig hervor.In the back part of such a seat shell arcuate cuts are provided to increase the flexibility of the shell. When the back part is loaded by a person leaning against the back part, the segments bounded by the incisions spread out and emerge like a scale.

Nachteilig ist, dass der Sitzcomfort für ein bequemes Sitzen nicht hinreichend ist. Insbesondere das schuppenartige Hervortreten von Segmenten führt zu einem unerwünschten Verdrücken einer Überpolsterung.The disadvantage is that the seat comfort for a comfortable sitting is not sufficient. In particular, the scale-like emergence of segments leads to an undesirable over-cushioning of a Überpolsterung.

Aufgabe der Erfindung ist es daher, eine Sitzschale nach dem Oberbegriff des Anspruchs 1 zu schaffen, die eine gute Flexibilität für ein bequemes Sitzen aufweist und dabei die Wirbelsäule beim Zurücklehnen ausreichend abstützt.The object of the invention is therefore to provide a seat according to the preamble of claim 1, which has a good flexibility for a comfortable sitting while the spine is sufficiently supported when leaning back.

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.This object is solved by the features of claim 1.

Hierdurch wird eine Sitzschale geschaffen, die eine einstückige bzw. einteilige Formholzschale mit einem Sitzteil, einem Rückenteil und einen das Sitzteil und das Rückenteil verbindenden gebogenen Übergangsbereich umfasst. Eine solche Formholzschale ist vorzugsweise ergonomisch geformt und kann einzeln oder in einer Anzahl an einem Gestell (nicht dargestellt) befestigt sein. Federungseigenschaften des Rückenteils gegenüber einem abgewinkelt mit dem Rückenteil verbundenen Sitzteil werden wesentlich bestimmt durch den gebogenen Übergangsbereich und dessen konstruktiven Aufbau.In this way, a seat shell is provided which comprises a one-piece or one-piece molded wood shell with a seat part, a back part and a bent transition region connecting the seat part and the back part. Such a shaped wooden shell is preferably ergonomically shaped and may be attached individually or in a number to a frame (not shown). suspension characteristics the back part against an angled connected to the back part seat part are substantially determined by the curved transition region and its structural design.

Erfindungsgemäß ist vorgesehen, dass die Formholzschale einen querverlaufenden, durch randseitige Stege begrenzten Ausschnitt in dem Übergangsbereich und/oder dem Rückenteil aufweist, der als Durchbruch umpolstert oder als Querschlitz umpolstert ist. Der Durchbruch begünstigt einen Reinigungseffekt für auf dem Sitz abgelegte Gegenstände, wie beispielsweise Getränkedosen, die über den als Durchgriffsöffnung wirkenden Durchbruch abfallen können. Ein versehentliches Setzen auf Drittgegenstände wird dadurch weitgehend vermieden. Ferner wird ein Belüftungseffekt erzeugt, der den Sitzcomfort verbessert.According to the invention, the shaped wood shell has a transverse cutout bounded by edge-side webs in the transition region and / or the back part, which is upholstered as a breakthrough or is upholstered as a transverse slot. The breakthrough favors a cleaning effect for items deposited on the seat, such as beverage cans, which may fall over the opening acting as a breakthrough opening. An accidental placement on third party items is thereby largely avoided. Furthermore, a ventilation effect is created, which improves the comfort of the seat.

Erfindungsgemäß wird dabei die Federwirkung im Zusammenspiel mit dem Ausschnitt durch einen Furnieraufbau mit mindestens neun Holzlagen verbessert, der mittig eine quasi Sandwichstruktur verwirklicht durch mindestens zwei mittlere Holzlagen in Querrichtung, zwischen denen mindestens eine mittlere Holzlage in Längsrichtung angeordnet ist, und die mindestens zwei mittleren Holzlagen in Querrichtung eine größere Stärke besitzen als äußere Holzlagen in Querrichtung. Die mindestens zwei mittleren Holzlagen in Querrichtung größerer Stärke erhöhen den Gesamtaufbau und die Steifigkeit der Schale derart, dass der Ausschnitt überbrückt wird, wodurch sich allerdings die äußeren Holzlagen weiter vom Kern entfernen und somit höheren Zug- und Druckbelastungen ausgesetzt sind. Dies kann durch äußere Holzlagen in Querrichtung und Längsrichtung ausgeglichen werden.According to the invention, the spring action is improved in cooperation with the cutout by a veneer structure with at least nine layers of wood, the quasi-sandwich structure realized by at least two middle wood layers in the transverse direction, between which at least one middle wood layer is arranged in the longitudinal direction, and the at least two middle wood layers have a greater thickness in the transverse direction than outer wood layers in the transverse direction. The at least two middle layers of wood in the transverse direction of greater thickness increase the overall structure and the rigidity of the shell such that the cutout is bridged, whereby, however, the outer layers of wood continue to move away from the core and are thus exposed to higher tensile and compressive loads. This can be compensated by external wood layers in the transverse direction and longitudinal direction.

Der erfindungsgemäße Furnieraufbau ermöglicht einer gepolsterten Sitzschale unabhängig davon, ob der Ausschnitt freistehend oder überpolstert ist, einen vergleichbaren Sitzcomfort mit Flexibilität zu bieten. Einem Benutzer kann bei unterschiedlichem optischem Eindruck - mit oder ohne Durchgriffsöffnung - ein Sitz mit im Wesentlichen gleichem Sitzcomfort bereitgestellt werden. Dies gilt auch dann, wenn die Sitzschale aufgrund der Benutzung hohen Belastungen ausgesetzt ist. Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.The veneer structure according to the invention makes it possible for a padded seat shell to offer comparable seat comfort with flexibility, regardless of whether the cutout is free-standing or overstuffed. A user can be provided with a different optical impression - with or without access opening - a seat with substantially the same seat comfort. This also applies if the seat shell is exposed to high loads due to the use. Further embodiments of the invention are described in the following description and the dependent claims.

Die Erfindung wird nachstehend anhand der in den beigefügten Abbildungen dargestellten Ausführungsbeispiele näher erläutert.

  • Fig. 1 zeigt schematisch eine Vorderansicht einer Formholzschale mit Ausschnitt für eine erfindungsgemäße Sitzschale gemäß einem ersten Ausführungsbeispiel,
  • Fig. 2 zeigt schematisch eine Rückansicht der Formholzschale nach Fig. 1,
  • Fig. 3 zeigt schematisch einen Längsschnitt der Formholzschale nach Fig. 1,
  • Fig. 4 zeigt schematisch eine Vorderansicht einer Formholzschale mit Ausschnitt für eine erfindungsgemäße Sitzschale gemäß einem zweiten Ausführungsbeispiel,
  • Fig. 5 zeigt schematisch eine Rückansicht der Formholzschale nach Fig. 4,
  • Fig. 6 zeigt schematisch einen Längsschnitt der Formholzschale nach Fig. 4,
  • Fig. 7 bis Fig. 10 zeigen jeweils einen Furnierlagenaufbau unterschiedlicher Gestaltung, wobei I längslaufende Holzlage und - querlaufende Holzlage bedeutet,
  • Fig. 11 zeigt schematisch eine perspektivische Seitenansicht einer Bank mit einer Anzahl Sitzschalen.
The invention will be explained in more detail with reference to the embodiments illustrated in the accompanying drawings.
  • Fig. 1 shows schematically a front view of a shaped wood shell with cutout for a seat according to the invention according to a first embodiment,
  • Fig. 2 schematically shows a rear view of the molded wood shell Fig. 1 .
  • Fig. 3 schematically shows a longitudinal section of the molded wood shell Fig. 1 .
  • Fig. 4 shows schematically a front view of a shaped wood shell with cutout for a seat according to the invention according to a second embodiment,
  • Fig. 5 schematically shows a rear view of the molded wood shell Fig. 4 .
  • Fig. 6 schematically shows a longitudinal section of the molded wood shell Fig. 4 .
  • FIGS. 7 to 10 each show a veneer layer structure of different design, where I means longitudinal wood layer and - transverse wood layer,
  • Fig. 11 schematically shows a side perspective view of a bank with a number of seats.

Wie Fig. 1 bis Fig. 3 zeigen, betrifft die Erfindung eine Sitzschale mit einer einstückigen Formholzschale 1. Die Formholzschale 1 ist ausgebildet mit einem Sitzteil 2 und einem Rückenteil 3, die in ihrem Übergangsbereich 4 eine Biegung entlang einer Biegeachse aufweist. Das Rückenteil 3 kann eine an die Wirbelsäule des Menschen angepasste Kontur aufweisen. Fig. 3 zeigt über einen Pfeil eine Wölbung des Rückenteils 3.As Fig. 1 to Fig. 3 The invention relates to a seat shell with a one-piece shaped wood shell 1. The shaped wood shell 1 is formed with a seat part 2 and a back part 3, which has a bend along a bending axis in its transition region 4. The back part 3 may have a contour adapted to the human spine. Fig. 3 shows over an arrow a curvature of the back part. 3

Die Formholzschale 1 weist einen Furnieraufbau aus mehreren aufeinander geleimten Holzlagen 10 bis 15 auf, wie nachfolgend zu Fig. 7 bis Fig. 10 noch im Einzelnen beschrieben wird.The molded wood shell 1 has a veneer structure of a plurality of mutually glued wood layers 10 to 15, as below FIGS. 7 to 10 will be described in detail.

Dieser Furnieraufbau umfasst vorn und hinten der Formholzschale 1 jeweils eine Decklage 15 aus einer Holzlage in Längsrichtung. Zwischen den Decklagen 15 ist eine Anzahl mittlerer und äußerer Holzlagen 10 bis 14 in Längs- oder Querrichtung angeordnet. Die Formholzschale 1 ist überpolstert, wie nachfolgend beschrieben ist.This veneer structure comprises at the front and rear of the molded wood shell 1 each a cover layer 15 of a wood layer in the longitudinal direction. Between the cover layers 15, a number of middle and outer layers of wood 10 to 14 in the longitudinal or transverse direction is arranged. The molded wooden shell 1 is overstuffed, as described below.

Die Formholzschale 1 weist einen querverlaufenden, durch randseitige Stege 5 begrenzten Ausschnitt 6 auf, der in dem Übergangsbereich 4 und/oder dem Rückenteil 3 ausgebildet ist. Gemäß dem in Fig. 1 bis Fig. 3 dargestellten ersten Ausführungsbeispiel ist der Ausschnitt 6 als ein Durchbruch, vorzugsweise erstreckend in das Rückenteil 3, zur Ausbildung beispielsweise einer Durchgriffsöffnung ausgebildet. Der Ausschnitt 6 ist dazu vorzugsweise als eine rechteckförmige Öffnung 7 ausgebildet mit einer Länge, die 50 bis 70 % der Schalenbreite im Bereich des Ausschnitts 6 beträgt. Der Ausschnitt 6 kann dabei eine Breite aufweisen, die 20 bis 40 % der Länge des Ausschnitts 6 beträgt. Bei einer Überpolsterung der Formholzschale 1 zur Sitzschale ist ein solcher Ausschnitt 6 vorzugsweise freistehend umpolstert und verbleibt somit als Freiraum einer Überpolsterung.The molded wood shell 1 has a transverse, limited by edge-side webs 5 cutout 6, which is formed in the transition region 4 and / or the back part 3. According to the in Fig. 1 to Fig. 3 illustrated first embodiment, the cutout 6 as an opening, preferably extending into the back part 3, for forming, for example, a through-opening formed. For this purpose, the cutout 6 is preferably designed as a rectangular opening 7 with a length which amounts to 50 to 70% of the shell width in the region of the cutout 6. The cutout 6 may have a width which is 20 to 40% of the length of the cutout 6. In a Überpolsterung the molded wood shell 1 to the seat such cutout 6 is preferably padded freestanding and thus remains as a free space of a Überpolsterung.

Fig. 4 bis Fig. 6 zeigen ein zweites Ausführungsbeispiel mit einem Ausschnitt 6, der bei einer durchgehenden Überpolsterung der Formholzschale 1 abdeckend überpolstert werden kann. Der Ausschnitt 6 wird vorzugsweise von einem Doppel-T-Träger-förmigen Querschlitz 8 gebildet. Die Kontur eines solchen Querschlitzes 8 ähnelt der Kontur einer rechteckförmigen Öffnung 7, wodurch im Kern der Formholzschale 1 vergleichbare Materialausnehmungen geschaffen werden mit ähnlichen Auswirkungen auf die Flexibilität im Aufbau der Formholzschale 1 bei Belastung. Die Positionierung der rechteckigen Öffnung 7 oder des Querschlitzes 8 als Ausschnitt 6 im Aufbau der Formholzschale 1 ist vorzugsweise gleich. Fig. 4 to Fig. 6 show a second embodiment with a cutout 6, which can be padded covering a continuous overholstery of the molded wood shell 1. The cutout 6 is preferably formed by a double-T-beam-shaped transverse slot 8. The contour of such a transverse slot 8 is similar to the contour of a rectangular opening 7, whereby 1 comparable material recesses are created in the core of the molded wood shell with similar effects on the flexibility in the construction of the molded wood shell 1 under load. The positioning of the rectangular opening 7 or the transverse slot 8 as a cutout 6 in the construction of the molded wood shell 1 is preferably the same.

Im Sitzteil 2 können Befestigungslöcher 9 zur Anbringung von Halterungen (nicht dargestellt) für einen Fuß oder ein Fußgestell (nicht dargestellt) vorgesehen sein.In the seat part 2 mounting holes 9 for attachment of brackets (not shown) for a foot or a pedestal (not shown) may be provided.

Der Furnieraufbau umfasst mindestens neun Holzlagen 10 bis 15 mit mindestens zwei mittleren Holzlagen 11 in Querrichtung, zwischen denen mindestens eine mittlere Holzlage 10 in Längsrichtung angeordnet ist, und die mindestens zwei mittleren Holzlagen 11 in Querrichtung eine größere Stärke besitzen als äußere Holzlagen 14 in Querrichtung und/oder gegebenenfalls äußere Holzlagen 12, 13, 15 in Längsrichtung.The veneer structure comprises at least nine layers of wood 10 to 15 with at least two middle wood layers 11 in the transverse direction, between which at least one middle wood layer 10 is arranged in the longitudinal direction, and the at least two middle wood layers 11 in the transverse direction have a greater thickness than outer wood layers 14 in the transverse direction and / or optionally outer wood layers 12, 13, 15 in longitudinal direction.

Zwischen einer mittleren Holzlage 11 in Querrichtung und einer äußeren Holzlage 14 in Querrichtung können mindestens zwei aufeinander geleimte äußere Holzlagen 12, 13 in Längsrichtung liegen, wie in Fig. 7 dargestellt.Between a middle wood layer 11 in the transverse direction and an outer wood layer 14 in the transverse direction, at least two outer wood layers 12, 13 glued to each other can lie in the longitudinal direction, as in FIG Fig. 7 shown.

Die beiden Decklagen 15 können jeweils mindestens zwei aufeinander geleimte Holzlagen in Längsrichtung umfassen.The two cover layers 15 may each comprise at least two successively glued wood layers in the longitudinal direction.

Der Faserverlauf einer Holzlage 10, 12, 13, 15 in Längsrichtung verläuft vorzugsweise jeweils parallel zur Sitzschalenspiegelebene, und der Faserverlauf einer Holzlage 11, 14 in Querrichtung verläuft vorzugsweise jeweils quer zur Sitzschalenspiegelebene für ein kreuzweises Verleimen.The fiber course of a wooden layer 10, 12, 13, 15 in the longitudinal direction preferably runs parallel to the seat pan mirror plane, and the fiber path of a wooden layer 11, 14 in the transverse direction preferably runs transversely to the seat pan mirror plane for a cross-wise gluing.

Die Stärke der mittleren Holzlagen 11 in Querrichtung liegt vorzugsweise bei jeweils 1,4 bis 1,8 mm, besonders bevorzugt bei 1,5 mm, während die Stärke der mittleren Holzlage 10 in Längsrichtung bei vorzugsweise 1,0 bis 1,3 mm, besonders bevorzugt bei 1,2 mm liegt.The thickness of the middle wood layers 11 in the transverse direction is preferably 1.4 to 1.8 mm, more preferably 1.5 mm, while the thickness of the middle wood layer 10 is preferably 1.0 to 1.3 mm in the longitudinal direction, especially preferably at 1.2 mm.

Die eine mittlere Holzlage 10 in Längsrichtung kann doppellagig ausgebildet sein, wie in Fig. 8 dargestellt ist. Die Stärke von äußeren Holzlagen 14 in Querrichtung und von äußeren Holzlagen 12, 13, 15 in Längsrichtung kann im Bereich von 1,0 bis 1,3 mm, besonders bevorzugt bei 1,2 mm liegen. Bevorzugt ist die Stärke von äußeren Holzlagen 12, 13, 15 in Längsrichtung gleich den Stärken von äußeren Holzlagen 14 in Querrichtung. Auch können die Stärken der inneren 10 und äußeren 12, 13, 15 Holzlagen in Längsrichtung gleich ausgebildet sein.The one middle wood layer 10 in the longitudinal direction may be double-layered, as in FIG Fig. 8 is shown. The thickness of outer wood layers 14 in the transverse direction and of outer wood layers 12, 13, 15 in the longitudinal direction can be in the range of 1.0 to 1.3 mm, particularly preferably 1.2 mm. Preferably, the thickness of outer wood plies 12, 13, 15 in the longitudinal direction is equal to the thicknesses of outer wood plies 14 in the transverse direction. Also, the thicknesses of the inner 10 and outer 12, 13, 15 wood layers in the longitudinal direction can be the same.

Zur Verstärkung können textile Gebilde aus Kunststofffasern zwischen Holzlagen 10 bis 15 eingelegt sein. Die Anordnung von Holzlagen 11 bis 15 ist vorzugsweise beidseitig spiegelbildlich symmetrisch zur mindestens einen mittleren Holzlage 10 in Längsrichtung vorgesehen.To reinforce textile structures made of plastic fibers between wood layers 10 to 15 can be inserted. The arrangement of wood plies 11 to 15 is preferably provided on both sides in mirror image symmetry with respect to the at least one middle wood ply 10 in the longitudinal direction.

Ferner kann vorgesehen sein, dass sich die Stärke(n) einer oder mehrerer der Holzlagen 10 bis 15 in Richtung oberem und/oder unterem Rand der Formholzschale 1 gegenüber dem Übergangsbereich 4 reduziert.Furthermore, it can be provided that the thickness (n) of one or more of the wood layers 10 to 15 in the direction of the upper and / or lower edge of the molded wood shell 1 is reduced relative to the transition region 4.

Der Furnieraufbau der Formholzschale 1 aus mehreren vorzugsweise kreuzweise aufeinander geleimten Holzlagen ist gemäß Fig. 7 bis Fig. 10 im Einzelnen wie folgt.The veneer structure of the shaped wood shell 1 of a plurality of preferably crosswise sized wood layers is according to FIGS. 7 to 10 in detail as follows.

Bei Fig. 7 folgen ausgehend von einer mittleren Holzlage 10 in Längsrichtung zu beiden Seiten jeweils die mittlere Holzlage 11 in Querrichtung, zwei äußere Holzlagen 12, 13 in Längsrichtung, eine äußere Holzlage 14 in Querrichtung und eine Decklage 15 als äußere Holzlage in Längsrichtung. Diese Furnierfolge ist verleimt.at Fig. 7 follow, starting from a central wood layer 10 in the longitudinal direction to both sides in each case the middle wood layer 11 in the transverse direction, two outer wood layers 12, 13 in the longitudinal direction, an outer wood layer 14 in the transverse direction and a cover layer 15 as an outer wood layer in the longitudinal direction. This veneer sequence is glued.

Bei Fig. 8 folgen ausgehend von zwei mittleren Holzlagen 10 in Längsrichtung zu beiden Seiten jeweils die mittlere Holzlage 11 in Querrichtung, zwei äußere Holzlagen 12, 13 in Längsrichtung, eine äußere Holzlage 14 in Querrichtung und eine Decklage 15 als äußere Holzlage in Längsrichtung. Dieser Furnieraufbau ist verleimt. Die Kanten der Formholzschale 1 können mit einer Fase versehen sein.at Fig. 8 follow, starting from two middle layers of wood 10 in the longitudinal direction to both sides of each of the middle layer of wood 11 in the transverse direction, two outer layers of wood 12, 13 in the longitudinal direction, an outer layer of wood 14 in the transverse direction and a cover layer 15 as an outer layer of wood in the longitudinal direction. This veneer structure is glued. The edges of the molded wood shell 1 can be provided with a chamfer.

Bei Fig. 9 folgen ausgehend von einer mittleren Holzlage 10 in Längsrichtung zu beiden Seiten jeweils die mittlere Holzlage 11 in Querrichtung, eine äußere Holzlage 12 in Längsrichtung, eine äußere Holzlage 14 in Querrichtung, eine äußere Holzlage 13 in Längsrichtung und eine Decklage 15 als äußere Holzlage in Längsrichtung. Diese Furnierfolge ist verleimt.at Fig. 9 follow, starting from a central wood layer 10 in the longitudinal direction to both sides in each case the middle wood layer 11 in the transverse direction, an outer wood layer 12 in the longitudinal direction, an outer wood layer 14 in the transverse direction, an outer wood layer 13 in the longitudinal direction and a cover layer 15 as an outer wood layer in the longitudinal direction. This veneer sequence is glued.

Bei Fig. 10 folgen ausgehend von einer mittleren Holzlage 10 in Längsrichtung zu beiden Seiten jeweils die mittlere Holzlage 11 in Querrichtung, eine äußere Holzlage 14 in Querrichtung, eine äußere Holzlage 12 in Längsrichtung und eine Decklage 15 als äußere Holzlage in Längsrichtung. Diese Furnierfolge ist verleimt.at Fig. 10 follow from a central wood ply 10 in the longitudinal direction both sides of the middle wood layer 11 in the transverse direction, an outer wood layer 14 in the transverse direction, an outer wood layer 12 in the longitudinal direction and a cover layer 15 as an outer layer of wood in the longitudinal direction. This veneer sequence is glued.

Die Holzlagen 10 bis 15 können als Sperrholzformpressteile aus Buche hergestellt sein. Die Formholzschalen 1 sind vorzugsweise mit einem Vollpolster überzogen, wobei der Durchbruch 7 als Freiraum verbleibt, während der Querschlitz 8 überpolstert wird zur Anpassung an den Sitzcomfort.The wood layers 10 to 15 can be made of beech molded plywood moldings. The shaped wood shells 1 are preferably coated with a full cushion, the opening 7 remains as a free space, while the transverse slot 8 is over-padded to adapt to the seat comfort.

Die Sitzschale mit der Formholzschale 1 kann als Bestandteil eines Stuhls oder einer Bank vorgesehen sein, wobei bei einer Bank eine Anzahl Sitzschalen an einem gemeinsamen Gestellrahmen befestigt sein kann, wie in Fig. 11 dargestellt. Fig. 11 zeigt Sitzschalen als Sitze 17, 18 an einer Bank 16, wobei der Sitz 17 einen umpolsterten Ausschnitt 20 aufweist.The seat shell with the molded wooden shell 1 may be provided as part of a chair or a bench, wherein a bank of a number of seats may be attached to a common frame frame, as in Fig. 11 shown. Fig. 11 shows seat shells as seats 17, 18 on a bench 16, wherein the seat 17 has a padded cutout 20.

Die Befestigung der einzelnen Sitzschalen an dem Gestellrahmen kann in Form eines Freischwingers erfolgen, um einen federnden Gestellrahmen bereitzustellen. Derartige Sitzschalen finden vorzugsweise in Wartebereichen beispielsweise von Flughäfen, Bahnhöfen, öffentlichen Gebäuden und dergleichen Verwendung, wobei die Anzahl der Sitzplätze wählbar ist. Entsprechend ihrem Verwendungszweck sind derartige Sitzschalen stabil auszuführen, insbesondere auch deshalb, da die Sitze regelmäßig auch als Schlafstätte oder als Ablage für Gepäck zweckentfremdet und hierdurch erheblich belastet werden. Der vorgesehene Ausschnitt 6, insbesondere in der Ausbildung als Durchbruch, kann den gewünschten Erfolg bringen, eine Ablage zu vermeiden.The attachment of the individual seat shells to the frame frame can be in the form of a cantilever to provide a resilient frame frame. Such seats are preferably used in waiting areas such as airports, train stations, public buildings and the like, the number of seats is selectable. According to their intended use such seats are stable perform, especially because the seats are regularly misused as a place to sleep or as a storage for luggage and thus significantly burdened. The intended cutout 6, especially in training as a breakthrough, can bring the desired success, to avoid filing.

Schließlich finden solche Sitzschalen auch in repräsentativen Bereichen Verwendung, wo ein ansprechendes Design gefordert ist. Auch hier ist es vorteilhaft, einen unerwünschten Gebrauch der Sitzschale zu verhindern, und zwar bei ausreichender Stabilität, so dass kein aufwendiger Tragrahmen erforderlich ist.Finally, such seats are also used in representative areas where an attractive design is required. Again, it is advantageous to prevent unwanted use of the seat, with sufficient stability, so that no complex support frame is required.

Claims (20)

Sitzschale, umfassend eine einstückige Formholzschale (1) mit einem Sitzteil (2) und einem Rückenteil (3), die in ihrem Übergangsbereich (4) eine Biegung entlang einer Biegeachse aufweist, die Formholzschale (1) einen Furnieraufbau aus mehreren aufeinander geleimten Holzlagen (10, 11, 12, 13, 14, 15) aufweist, wobei vorn und hinten der Formholzschale (1) jeweils eine Decklage (15) aus einer Holzlage in Längsrichtung angeordnet ist und zwischen den Decklagen eine Anzahl mittlerer und äußerer Holzlagen (10, 11, 12, 13, 14, 15) in Längs- oder Querrichtung angeordnet ist, und die Formholzschale (1) überpolstert ist, dadurch gekennzeichnet, dass die Formholzschale (1) einen querverlaufenden, durch randseitige Stege (5) begrenzten Ausschnitt (6) in dem Übergangsbereich (4) und/oder dem Rückenteil (3) aufweist und der Furnieraufbau mindestens neun Holzlagen (10, 11, 12, 13, 14, 15) umfasst mit mindestens zwei mittleren Holzlagen (11) in Querrichtung, zwischen denen mindestens eine mittlere Holzlage (10) in Längsrichtung angeordnet ist, und die mindestens zwei mittleren Holzlagen (11) in Querrichtung eine größere Stärke besitzen als äußere Holzlagen (14) in Querrichtung.Seat shell comprising a one-piece molded wood shell (1) with a seat part (2) and a back part (3) which has a bend along a bending axis in its transition region (4), the molded wood shell (1) has a veneer structure consisting of several layers of wood glued together (10 , 11, 12, 13, 14, 15), wherein front and rear of the shaped wood shell (1) each have a cover layer (15) is arranged from a wood layer in the longitudinal direction and between the cover layers, a number of middle and outer layers of wood (10, 11, 12, 13, 14, 15) is arranged in the longitudinal or transverse direction, and the molded wood shell (1) is overstuffed, characterized in that the shaped wood shell (1) has a transverse, by edge-side webs (5) limited cutout (6) in the Transition region (4) and / or the back part (3) and the veneer structure at least nine wood layers (10, 11, 12, 13, 14, 15) comprises at least two middle wood layers (11) in the transverse direction, between which at least one m Istlere wooden layer (10) is arranged in the longitudinal direction, and the at least two middle wood layers (11) in the transverse direction have a greater thickness than outer wood layers (14) in the transverse direction. Sitzschale nach Anspruch 1, dadurch gekennzeichnet, dass zwischen einer mittleren Holzlage (11) in Querrichtung und einer äußeren Holzlage (14) in Querrichtung mindestens zwei aufeinander geleimte äußere Holzlagen (12, 13) in Längsrichtung liegen.Seat shell according to claim 1, characterized in that between a middle wood layer (11) in the transverse direction and an outer wood layer (14) in the transverse direction, at least two outer wood layers (12, 13) glued together are in the longitudinal direction. Sitzschale nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die beiden Decklagen (15) jeweils mindestens zwei aufeinander geleimte Holzlagen in Längsrichtung umfassen.Seat shell according to claim 1 or 2, characterized in that the two cover layers (15) each comprise at least two mutually glued wood layers in the longitudinal direction. Sitzschale nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Ausschnitt (6) für eine durchgehende Überpolsterung der Schale abdeckend überpolstert oder als Freiraum einer Überpolsterung der Schale freistehend umpolstert ist.Seat shell according to one of claims 1 to 3, characterized in that the cutout (6) covering a continuous over-cushioning of the shell overstuffed or upholstered as free space of an over-upholstery of the shell freestanding. Sitzschale nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Ausschnitt (6) von einem Doppel-T-Träger-förmigen Querschlitz (8) gebildet ist.Seat shell according to one of claims 1 to 4, characterized in that the cutout (6) is formed by a double-T-beam-shaped transverse slot (8). Sitzschale nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Ausschnitt (6) als Durchbruch ausgebildet ist.Seat shell according to one of claims 1 to 4, characterized in that the cutout (6) is formed as an opening. Sitzschale nach Anspruch 6, dadurch gekennzeichnet, dass der Ausschnitt (6) rechteckförmig ausgebildet ist mit einer Länge, die 50 bis 70 % der Schalenbreite im Bereich des Ausschnitts (6) beträgt.Seat shell according to claim 6, characterized in that the cutout (6) is rectangular in shape with a length which is 50 to 70% of the shell width in the region of the cutout (6). Sitzschale nach Anspruch 7, dadurch gekennzeichnet, dass der Ausschnitt (6) eine Breite aufweist, die 20 bis 40% der Länge beträgt.Seat shell according to claim 7, characterized in that the cutout (6) has a width which is 20 to 40% of the length. Sitzschale nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Faserverlauf einer Holzlage (10, 12, 13, 15) in Längsrichtung jeweils parallel zur Sitzschalenspiegelebene verläuft und der Faserverlauf einer Holzlage in Querrichtung (11, 14) jeweils quer zur Sitzschalenspiegelebene verläuft für ein kreuzweises Verleimen.Seat shell according to one of claims 1 to 8, characterized in that the grain of a wood layer (10, 12, 13, 15) in the longitudinal direction in each case runs parallel to the seat pan mirror plane and the grain of a wood layer in the transverse direction (11, 14) extends transversely to the seat pan mirror plane for a crosswise gluing. Sitzschale nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Stärke der mittleren Holzlagen (11) in Querrichtung bei 1,4 bis 1,8 mm liegt, während die Stärke der mittleren Holzlage (10) in Längsrichtung bei 1,0 bis 1,3 mm liegt.Seat shell according to one of claims 1 to 9, characterized in that the thickness of the central wood layers (11) in the transverse direction is 1.4 to 1.8 mm, while the thickness of the central wood layer (10) in the longitudinal direction at 1.0 to 1.3 mm. Sitzschale nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die eine mittlere Holzlage (10) in Längsrichtung doppellagig ausgebildet ist.Seat shell according to one of claims 1 to 10, characterized in that the one middle wooden layer (10) is double-layered in the longitudinal direction. Sitzmöbel nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Stärke von äußeren Holzlagen (14) in Querrichtung und von äußeren Holzlagen (12, 13, 15) in Längsrichtung im Bereich von 1,0 bis 1,3 mm liegt.Seating furniture according to one of claims 1 to 11, characterized in that the thickness of outer wood layers (14) in the transverse direction and of outer wood layers (12, 13, 15) in the longitudinal direction is in the range of 1.0 to 1.3 mm. Sitzschale nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Stärke von äußeren Holzlagen (12, 13, 15) in Längsrichtung gleich den Stärken von äußeren Holzlagen (14) in Querrichtung ist.Seat shell according to one of claims 1 to 12, characterized in that the thickness of outer wood layers (12, 13, 15) in the longitudinal direction is equal to the thicknesses of outer wood layers (14) in the transverse direction. Sitzschale nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass die Stärken der inneren (10) und äußeren Holzlagen (12, 13, 15) in Längsrichtung gleich ausgebildet sind.Seat shell according to one of claims 1 to 13, characterized in that the thicknesses of the inner (10) and outer wood layers (12, 13, 15) are of identical design in the longitudinal direction. Sitzschale nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass zur Verstärkung textile Gebilde aus Kunststofffasern zwischen Holzlagen (10, 11, 12, 13, 14, 15) eingelegt sind.Seat shell according to one of claims 1 to 14, characterized in that for reinforcement textile structures of plastic fibers between wood layers (10, 11, 12, 13, 14, 15) are inserted. Sitzschale nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass die Anordnung von Holzlagen (11, 12, 13, 14, 15) beidseitig spiegelbildlich symmetrisch zur mindestens einen mittleren Holzlage (10) in Längsrichtung vorgesehen ist.Seat shell according to one of claims 1 to 15, characterized in that the arrangement of wood layers (11, 12, 13, 14, 15) is provided on both sides mirror image symmetrical to at least one central wood layer (10) in the longitudinal direction. Sitzschale nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass sich die Stärke(n) einer oder mehrerer der Holzlagen (10, 11, 12, 13, 14, 15) in Richtung oberem und/oder unterem Rand der Sitzschale gegenüber dem Übergangsbereich (4) reduziert.Seat shell according to one of claims 1 to 16, characterized in that the strength (s) of one or more of the wood layers (10, 11, 12, 13, 14, 15) in the direction of the upper and / or lower edge of the seat shell relative to the transition region (4) reduced. Sitzschale nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, dass die Sitzschale Bestandteil eines Stuhls oder einer Bank ist.Seat according to one of claims 1 to 17, characterized in that the seat is part of a chair or a bank. Sitzbank mit mehreren Sitzschalen nach einem der Ansprüche 1 bis 18, dadurch gekennzeichnet, dass eine Anzahl Sitzschalen an einem gemeinsamen Gestellrahmen befestigt ist.Seat with a plurality of seat shells according to one of claims 1 to 18, characterized in that a number of seat shells is attached to a common frame frame. Sitzbank nach Anspruch 19, dadurch gekennzeichnet, dass die Befestigung der einzelnen Sitzschalen an dem Gestellrahmen in Form eines Freischwingers erfolgt.Seat according to claim 19, characterized in that the attachment of the individual seat shells takes place on the frame frame in the form of a cantilever.
EP19000122.2A 2018-03-14 2019-03-12 Integrally moulded plywood seat shell Active EP3539421B1 (en)

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DE4316057A1 (en) 1993-05-13 1994-11-17 Becker Kg Fritz One-piece seat shell

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PL3539421T3 (en) 2021-03-08
US20190281987A1 (en) 2019-09-19
DE102018002048A1 (en) 2019-09-19
US10772431B2 (en) 2020-09-15
ES2837701T3 (en) 2021-07-01
EP3539421B1 (en) 2020-09-16
CA3036535A1 (en) 2019-09-14

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