EP2410890B1 - Sitzrückenlehne - Google Patents

Sitzrückenlehne Download PDF

Info

Publication number
EP2410890B1
EP2410890B1 EP10756428.8A EP10756428A EP2410890B1 EP 2410890 B1 EP2410890 B1 EP 2410890B1 EP 10756428 A EP10756428 A EP 10756428A EP 2410890 B1 EP2410890 B1 EP 2410890B1
Authority
EP
European Patent Office
Prior art keywords
seat backrest
resilient means
cavity
frame
pocketed spring
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.)
Not-in-force
Application number
EP10756428.8A
Other languages
English (en)
French (fr)
Other versions
EP2410890B8 (de
EP2410890A1 (de
EP2410890A4 (de
Inventor
Erik Malm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MALMSTOLEN PRODUKTION AB
Original Assignee
Malmstolen AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Malmstolen AB filed Critical Malmstolen AB
Publication of EP2410890A1 publication Critical patent/EP2410890A1/de
Publication of EP2410890A4 publication Critical patent/EP2410890A4/de
Application granted granted Critical
Publication of EP2410890B1 publication Critical patent/EP2410890B1/de
Publication of EP2410890B8 publication Critical patent/EP2410890B8/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47C7/36—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

Definitions

  • Figure 2 shows a front view of the chair in Figure 1 .
  • the backrest 20 shown in this figure is provided with a lumbar support structure in the form of a resilient means 24.
  • the resilient means 24 is arranged internally in the backrest 20 and is schematically indicated in dashed lines in Figure 2 .
  • Figure 3 shows a cross-sectional view taken in a central vertical plane III-III at right angles to and in the vertical extension of the backrest 20 of the chair shown in Figure 2 .
  • the backrest 20 comprises a rigid frame 25 supporting a contourable portion including a covering upholstery layer 26 and an elastomeric layer 27 interposed between the covering upholstery layer 26 and the frame 25.
  • the resilient means 24 is arranged between the frame 25 and the elastomeric layer 27 to impart a curvature to the covering upholstery layer 26 and the elastomeric layer 27 to produce a desired contour at least in the lumbar region L. This curvature is mainly determined by the shape or contour of the surface of the rigid frame 25 facing the elastomeric layer 27 and the resilient means 24.
  • the resilient means 24 is located in a corresponding cavity 28 in a portion of the elastomeric layer 27 facing the frame 25 and comprises a number of parallel pocketed spring assemblies 30.
  • Figure 3 shows the resilient means located in the lumbar region L.
  • a further resilient means 24' can extend from the lumbar region and at least up to the thoracic region T.
  • the resilient means can extend over a limited area, as indicated by the resilient means 24 in the lumbar region, or over a larger area, as indicated by the further resilient means 24' in the lumbar and thoracic regions.
  • the vertical and transverse extension of the resilient means can cover the entire area 24" of the backrest facing the user.
  • Figure 4 shows a cross-sectional view taken in a horizontal plane IV-IV in a transverse direction through the backrest 20 of the chair 10 in Figure 2 .
  • the outer dimensions of the resilient means 24 is substantially the same as the dimensions of the cavity 28.
  • the resilient means 24 is arranged to fill the cavity in the vertical and transverse extension of the backrest 20.
  • the thickness of the resilient means 24 in its unloaded state, measured at substantially right angles to the frame 25, is substantially the same as the depth of the cavity 28 into the surface of the elastomeric layer 27 facing the frame 25.
  • the resilient means 24 comprises three parallel pocketed spring assemblies 30.
  • the number of spring assemblies can be varied, depending on the coil diameter and/or wire diameter used for each spring assembly, depending on the desired properties in each section of the backrest.
  • Each spring assembly 30 comprises one pocketed continuous coiled metal spring member formed by coiling a spring metal wire.
  • Each said continuous spring member is enclosed in a fabric covering 31 and extends between opposing sides of the cavity 28.
  • the continuous coiled spring members are only schematically indicated in Figures 3 and 4 .
  • the continuous coiled spring members can be formed from a single length of wire formed into a row of single or parallel coil springs. In the latter case, the continuous coiled metal spring member comprises a row formed by a pair of coil springs arranged interconnected and side-by-side along the extension of the spring assembly.
  • the pocketed spring assemblies 30 are enclosed by a pair of facing fabric sheets 31, 32 which are joined to each other and divided into a plurality of pockets by spaced lines 33 of attachment.
  • Figure 5 shows an exploded view of the internal structure of the backrest.
  • Each pocket contains a single coiled spring member and each of said pockets has a length equal to the spring assembly 30.
  • a first sheet 31 is kept flat, while a second sheet 32 is given an undulating shape and is attached to the first sheet along the upper portion of each undulation.
  • the lines 33 of attachment will be located in an outer surface of the resilient means 24, facing the frame 25.
  • the pockets formed between adjacent lines of attachment are sufficiently large to allow a coiled spring member to be introduced into each pocket.
  • Each coiled spring member can be attached to one or both material sheets at one or more locations in order to hold the coiled spring member in place within its pocket.

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)

Claims (16)

  1. Sitzrückenlehne (20) umfassend einen steifen Rahmen (25), welcher ein konturiertes Teil trägt, welches aus einer Polsterdeckschicht (26) und mindestens einer zwischen der Polsterdeckschicht (26) und dem Rahmen (25) eingefügten Elastomerschicht (27) gebildet ist; und ein elastisches Mittel (24) zwischen dem Rahmen (25) und der Elastomerschicht (27), um der Polsterdeckschicht (26) und der Elastomerschicht (27) eine Wölbung zu verleihen, um eine erwünschte Kontur zumindest im Lendenbereich zu erzeugen, wobei das elastische Mittel (24) in einer Aussparung (28) in einem dem Rahmen (25) zugewandten Teil der Elastomerschicht (27) angeordnet ist, dadurch gekennzeichnet, dass das elastische Mittel (24) mindestens eine eingetaschte Federanordnung (30) umfasst, welche eingetaschte Federanordnung (30) mindestens ein kontinuierlich gewickeltes Federelement aufweist, welches zu einer Reihe von Spiralfedern geformt ist, wobei jedes kontinuierlich gewickelte Federelement in einem Deckmaterial (31, 32) eingeschlossen ist und sich zwischen gegenüberliegenden Seiten der Aussparung (28) erstreckt.
  2. Sitzrückenlehne nach Anspruch 1, dadurch gekennzeichnet, dass jede eingetaschte Federanordnung (30) ein Deckmaterial (31, 32) umfassend ein Paar von einander zugewandten, miteinander verbundenen Gewebebahnen (31, 32) aufweist, wobei die Gewebebahnen (31, 32) durch beabstandete quere Befestigungslinien (33) in eine Mehrzahl von Taschen eingeteilt sind, wobei jede Tasche ein einzelnes Spiralfederelement aufnimmt, wobei jede der Taschen eine Länge aufweist, welche der Länge einer eingetaschten Federanordnung (30) gleich ist.
  3. Sitzrückenlehne nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das kontinuierlich gewickelte Federelement aus einer einzigen Länge von Draht gebildet ist, welcher zu einer Mehrzahl von parallelen Spiralfedern geformt ist, wobei jede der Spiralfedern eine obere Endabbiegung, eine untere Endabbiegung und eine Mehrzahl von zentralen Windungen zwischen den Endabbiegungen aufweist, wobei die zentralen Windungen eine Achse der Spiralfedern definieren, wobei die Spiralfedern des kontinuierlich gewickelten Federelements in einer Reihe angeordnet sind und durch Verbindungsabschnitte von Drahten, die in oberen und unteren Teilen des kontinuierlich gewickelten Federelements abwechslungsweise angeordnet sind, miteinander verbunden sind.
  4. Sitzrückenlehne nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Höhe der mindestens einen eingetaschten Federanordnung (30) gleich der Tiefe oder höher als die Tiefe der Aussparung (28) zwischen dem Rahmen (25) und der Elastomerschicht (27) ist.
  5. Sitzrückenlehne nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die mindestens eine eingetaschte Federanordnung (30) sich zwischen gegenüberliegenden Oberflächen in der Aussparung (28) in der vertikalen Ausdehnung der Sitzrückenlehne (20) erstreckt.
  6. Sitzrückenlehne nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die mindestens eine eingetaschte Federanordnung (30) sich zwischen gegenüberliegenden Oberflächen in der Aussparung (28) in der Querausdehnung der Sitzrückenlehne (20) erstreckt.
  7. Sitzrückenlehne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Aussparung (28), welche die mindestens eine eingetaschte Federanordnung (30) aufnimmt, zumindest in einem unteren Teil der Sitzrückenlehne (20), d.h. zu dem Lendenbereich der Wirbelsäule des Benutzers passend, angeordnet ist.
  8. Sitzrückenlehne nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Aussparung (28), welche die mindestens eine eingetaschte Federanordnung (30) aufnimmt, zumindest in einem unteren und zwischenliegenden Teil der Sitzrückenlehne (20), d.h. zu dem Lenden- und Brustbereich der Wirbelsäule des Benutzers passend, angeordnet ist.
  9. Sitzrückenlehne nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das elastische Mittel (24) eingetaschte Federanordnungen (30) verschiedener Längen aufweist.
  10. Sitzrückenlehne nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Aussparung (28), welche die eingetaschten Federanordnungen (30) aufnimmt, dazu vorgesehen ist, der Größe des elastischen Mittels (24) zu entsprechen.
  11. Sitzrückenlehne nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass das elastische Mittel (24) eingetaschte Federanordnungen (30) verschiedener Größen aufweist.
  12. Sitzrückenlehne nach Anspruch 11, dadurch gekennzeichnet, dass die eingetaschten Federanordnungen (30) gewickelte Federn verschiedener Höhen aufweisen.
  13. Sitzrückenlehne nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass die eingetaschten Federanordnungen (30) gewickelte Federn mit verschiedenen Drahtdurchmessern aufweisen.
  14. Sitzrückenlehne nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, dass die eingetaschten Federanordnungen (30) gewickelte Federn mit verschiedenen Spiraldurchmessern aufweisen.
  15. Sitzrückenlehne nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass der Rahmen (25) einen steifen Mantel aufweist, welcher die umfängliche Außenkontur der Sitzrückenlehne (20) begrenzt und eine der Form einer Wirbelsäule entsprechende vertikale Ausdehnung aufweist.
  16. Sitzrückenlehne nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass der Rahmen (25) ein geformtes Harzmaterial aufweist.
EP10756428.8A 2009-03-25 2010-03-25 Sitzrückenlehne Not-in-force EP2410890B8 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0900377 2009-03-25
PCT/SE2010/050330 WO2010110732A1 (en) 2009-03-25 2010-03-25 Seat backrest

Publications (4)

Publication Number Publication Date
EP2410890A1 EP2410890A1 (de) 2012-02-01
EP2410890A4 EP2410890A4 (de) 2013-01-23
EP2410890B1 true EP2410890B1 (de) 2013-12-18
EP2410890B8 EP2410890B8 (de) 2014-02-19

Family

ID=42781252

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10756428.8A Not-in-force EP2410890B8 (de) 2009-03-25 2010-03-25 Sitzrückenlehne

Country Status (2)

Country Link
EP (1) EP2410890B8 (de)
WO (1) WO2010110732A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2020204165A1 (en) * 2020-06-22 2022-01-20 Phillip John HARTSHORNE Lumbar support device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2060298A (en) * 1934-10-17 1936-11-10 Florence L Gailey Adjustable seat back cushion
US2071974A (en) * 1936-03-24 1937-02-23 William H Gunlocke Chair back
JPS5712055U (de) * 1980-06-17 1982-01-21
JPS57122810A (en) * 1981-01-22 1982-07-30 Tachikawa Spring Co Cushion material for vehicle seat
CA1211234A (en) * 1984-04-10 1986-09-09 Allen Elliott Seat cushion spring assembly
FR2677531B1 (fr) * 1991-06-17 1993-10-08 Faure Automobile Bertrand Perfectionnements aux appuis lombaires reglables et aux dossiers equipes de tels appuis.
US6295673B1 (en) * 1998-07-24 2001-10-02 L & P Property Management Company Reinforced pocketed spring assembly

Also Published As

Publication number Publication date
EP2410890B8 (de) 2014-02-19
EP2410890A1 (de) 2012-02-01
EP2410890A4 (de) 2013-01-23
WO2010110732A1 (en) 2010-09-30

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