EP0657126B1 - Corps de garnissage en matériau élastique - Google Patents

Corps de garnissage en matériau élastique Download PDF

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Publication number
EP0657126B1
EP0657126B1 EP94111887A EP94111887A EP0657126B1 EP 0657126 B1 EP0657126 B1 EP 0657126B1 EP 94111887 A EP94111887 A EP 94111887A EP 94111887 A EP94111887 A EP 94111887A EP 0657126 B1 EP0657126 B1 EP 0657126B1
Authority
EP
European Patent Office
Prior art keywords
lamellas
filler body
bearing surface
body according
elastic material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94111887A
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German (de)
English (en)
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EP0657126A1 (fr
Inventor
Reinhardt Maier
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Individual
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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
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/142—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities
    • A47C27/146—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities on the outside surface of the mattress or cushion
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/148—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays of different resilience
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/15—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays consisting of two or more layers

Definitions

  • the invention relates to a filler made of elastic material according to the preamble of claim 1.
  • Such fillers in particular for upholstery and mattresses, have at least one surface side which is designed as a load-bearing surface.
  • Structural elements are provided in the support surface, which are connected to one another in their foot region facing away from the support surface.
  • a filler of the generic type is known from US Pat. No. 3,828,378, which relates to a mattress.
  • the compression hardness of the packing is varied, so that a constant contact pressure is established for a person lying down. If the mattress is used for a long time, the specified compression hardness profile can change in an undesirable manner.
  • Another filler body can be found in DE-C 601 366.
  • paving stone-like structural elements are formed in the support surface, which improves the conformability of the filler.
  • the hardness of the packing cannot be regulated.
  • a foam sheet is known as a filling material for blankets or textiles, in which slots are uniformly introduced over the entire surface in order to increase the suppleness.
  • Packings made of elastic materials are used in the manufacture of upholstered furniture, mattresses, office chairs and for the construction of car and airplane seats.
  • the properties of a packing are determined by the quality of the foam used. Quality is to be understood in particular as the density.
  • Packing materials of a type of foam i.e. with a uniform density, have a uniform deformation behavior.
  • a differentiated deflection behavior of the contact surface of a packing can also be achieved in that different types of foam with different compression hardness and density are bonded together in a sandwich construction.
  • Achieving high seating comfort, i.e. a relatively finely differentiated deflection behavior of the packing consequently requires a complicated layer structure of the cushion body with a large number of different types of foam. Since the individual upholstery elements have to be tailored and glued together, storage and manufacturing costs are correspondingly high.
  • the discontinuity of the hardness gradation is exacerbated by the hard adhesive seam, in particular by the vertical seams in the outer area of the layer structure.
  • a desired air circulation between the layers is also prevented.
  • the object is achieved by the characterizing features of claim 1.
  • the structural elements are adjacent slats, which are formed by separating slots in the support surface.
  • the slats are partially formed in the elastic material with variable length and / or variable slat cross-section, so that a differentiated deflection behavior occurs under load.
  • the lamellae extend away from the support surface into the interior of the packing. Since the slats only in their foot area, i.e. inside the packing, connected to each other and to the remaining part of the packing, the lamellas can move against each other when the bearing surface is loaded.
  • the lamellae can advantageously be used to create regions of different compression hardness in a packing with a uniform density and the compression hardness can be set in a targeted manner.
  • the manufacturing outlay for fillers with different compression hardness and deflection characteristics can be significantly reduced and the costs for keeping a variety of different types of foam available for layered fillers can be reduced.
  • the compression hardness of the packing along the support surface can be adjusted continuously by changing the depth of the separating slot and / or the cross-section of the lamella. In this way, a constant change in the compression hardness can be achieved over the entire contact surface of the packing.
  • Large, discrete hardness gradations can be carried out by continuously changing the length of the slats and also by means of their cross-sectional shape parallel and / or transversely to the contact surface, thereby forming a sitting or lying surface which is particularly comfortable.
  • a particularly high differentiation of the deflection behavior is achieved if the adjacent slats have different lengths or cross-sectional areas. A multitude of areas with lower compression hardness and higher impression behavior can thus be formed in a starting material with a certain hardness.
  • the lamellae are arranged perpendicularly or at an acute angle to the contact surface. In this angular range, the individual slats still have a sufficiently high elastic behavior in order to assume their original position after the load has ceased and to form the intended shape of the contact surface.
  • the support surface including the slats is superimposed by a cover element.
  • This cover element is advantageously a thin foam sheet with a low compressive strength or a polyester fleece. Since the contact surface would have a serrated shape in the event of major displacements of the lamellae relative to one another, the soft cover layer creates a uniform surface configuration of the deformed area even in the event of strong deformations of the packing.
  • a cotton fleece, a cotton, rayon or sheep's wool material can also be used as the cover element.
  • sliding elements are arranged between the cover element and the support surface or between the slats.
  • These sliding elements can be short-staple polyester fibers or feathers, especially down.
  • the sliding elements sit between the slats and prevent them from getting caught, so that the slats stand up securely.
  • Coatings on the lamella flanks can also be provided as sliding elements, by means of which the compression hardness of the starting material can additionally be increased.
  • a sandwich structure made of several elastic materials with different densities and compression hardness is provided.
  • the lamella areas on the filler on individual elastic materials then only serve to fine-tune the properties of the filler. As a result, the effort required to form the lamella areas and to assemble and glue the individual sandwich or layer elements can be reduced to a necessary minimum.
  • an edge region with a greater compression hardness is provided around the contact surface with the slats. No slats are formed in this edge area. In this way it is prevented that the slats protrude laterally from the intended contour of the filler body under load.
  • the edge area can be formed by a separate material or by edge sections without lamellae on the elastic material.
  • the separating slots are designed as incisions with a depth of 2 mm to 15 cm.
  • the optimal lamella length must be determined by tests depending on the starting material and the lamella cross-sections. In these experiments, only a sample of the starting material has to be provided with the appropriate lamella cuts. When a defined force is applied, it can then be determined on the basis of the depth of impression made in the filler whether the intended separation slot depth results in the desired compression hardness.
  • the cross section of the lamellae has the shape of a rectangle, square, triangle, trapezoid, kite, parallelogram or a diamond.
  • the best lamella cross-sectional shape for loading the finished packing can be determined by simple tests.
  • These cross-sectional shapes relate both to the cross-sectional areas parallel or alternatively perpendicular to the contact surface.
  • polyurethane or polyester foams are provided as the elastic material. Thanks to their particularly uniform deformation and Suspension behavior suitable for the execution of the lamella areas according to the invention.
  • a preformed amount of polyester fiber usually has a high compression hardness. Starting from this relatively hard elastic material, the desired softer areas can be formed by the lamellae.
  • a preformed filler body usually already has its desired final shape after the foaming process. Preformed fillers are not normally used for sandwich construction. As a result, preformed fillers, such as those often used for upholstering office chairs, have a uniform compression hardness. By introducing lamellas into a preformed filler during or after the shape of the filler, preformed fillers can now be produced from a uniform material but with different compression hardness in some areas.
  • Another advantageous embodiment of the invention is that the slats are glued together on their side surfaces. By gluing the lamellae together, an opposite effect is brought about, since the glue points in the filler body represent stiffened areas. This means that an increase in the compression hardness compared to the compression hardness of the starting material can be achieved by these bonds.
  • the slats can be formed by cuts in the elastic material.
  • the filler according to the invention with lamella areas can thus be simple and inexpensive Formed from pre-assembled elastic materials.
  • the incisions can be made by cutting, punching or cutting using laser beams.
  • cutting and punching it is advantageous that no material waste occurs in the manufacture of the slats.
  • cutting blades with rotating or sawing movements can be used for cutting.
  • water jet cutting can also be used.
  • wall projections can be provided on the inside of the mold, by means of which the separating slots between the lamellae are formed.
  • the lamellae are already produced during the manufacture of the packing.
  • the arrangement of the thin projections corresponds exactly to the formation of the separating slots around the slats.
  • FIG. 1 schematically shows, in a perspective partial sectional view, a filling body 10 in which a plurality of regions with lamellae 12 are formed.
  • the lamellae 12 extend from the inside of the filler body 10 to the outside to a support surface 11.
  • the support surface 11 is the side of the filler body 10 which is subjected to force by an indenting load, for example a lying or sitting person.
  • the individual slats 14 are close together, but are laterally separated from one another by separating slots 13. Only in their foot area 14 are the lamellae 12 connected to the filling body 10 and thus also to one another.
  • the position of the lamellae 12 relative to the filler body 10 is defined by their base region 14. However, if a compressive force acts on the contact surface 11, the slats 12 can buckle and move against one another. In this way, the surface loading causes a greater depth of indentation in the lamella area in comparison to areas of the filling body 10 made of solid soft material.
  • lamellae 12a are worked out, which have a square cross-section with a smaller cross-sectional area and a greater lamella length in comparison to the lamellae 12 described above.
  • lamellae 12b are cut into the porous, elastic material.
  • the cross-sectional shape and the lamella length of the individual lamellae 12b are different.
  • an area with a continuously changed compression hardness is created in the elastic starting material with a uniform compression hardness.
  • the lamellae 12b are designed in such a way that an area is created in the filler body 10 which has a defined compression hardness profile which is adapted to the expected surface loading of the contact surface 11. Compression hardness, resilience and depth of indentation can be optimally adapted to any load due to the differentiated design of the slats.
  • FIG. 2 schematically shows a filling body 10 in a perspective and partially sectioned view, in which further embodiments of the lamellae 12 are shown.
  • the elements which correspond to parts from FIG. 1 are given the same reference numerals.
  • the filler body 10 has an additional edge area 16.
  • the edge area 16 consists of an elastic material with a greater compression hardness than the soft material in which the lamellae 12 are formed. The harder edge area 16 prevents the slats from breaking out to the side.
  • the slats 12c are arranged obliquely with respect to the contact surface 11. This oblique arrangement influences the direction of kinking and displacement of the slats 12c under load as well as their restoring property when the pressure force is removed.
  • the slats 12d have a rectangular cross-section, which causes a different bending behavior parallel and transverse to the edge region 16.
  • the lamellae 12e have an elongated rectangular cross section and are integrally connected to the filler 10 both in their foot region and on at least one side surface.
  • Fig. 3 is a schematic representation of a conventional composite filler 30.
  • the filler 30 is suitable, for example, for a mattress.
  • the packing body 30 is created with a compression hardness that decreases continuously to the left by coordinating the assembly and gluing together of the two cushion elements 31 and 32.
  • a filler 40 with the same compression hardness profile as the filler 30 from FIG. 3 is shown in FIG. 4. It can be seen that the fins 12 have a continuous increase in length for the continuous reduction of the compression hardness.
  • the filler 40 has the same cushioning properties as the filler 30 has the advantage that it is not necessary to assemble and stick together two cushion elements.
  • the filler 50 consists of a base cushion element 18, made of a hard foam material, a central cushion element 17 with lamellae 12 made of a foam material with medium hardness and a cover element 15 made of a soft elastic material.
  • the filler 50 also has an edge region 16, which consists of a soft material with a relatively high compression hardness.
  • FIG. 6 shows a filling body 60 which essentially corresponds to the filling body 50 from FIG. 5.
  • the base cushion element 18 is constructed from a large number of spring cores 19.
  • a soft material, for example a fleece, is provided for the cover element 15.
  • FIG. 7 shows a further embodiment of the slats 12 according to the invention.
  • the separating slots 13 between the lamellae 12 have been produced by curved shaped cutting.
  • a preformed filler 20 made of a soft fiber material is shown in FIG. 8.
  • the prefabricated filler 20 receives its final shape in a mold during a pressing or foaming process.
  • Such methods are used in particular for upholstery for office chairs and simple upholstered furniture as well as for car and airplane seats.
  • a relatively hard, elastic starting material is selected for the preformed packing, 12 areas of lower compression hardness being created by introducing separating slots 13 to produce the lamellae.
  • FIG. 9 schematically shows a molding tool 21 for producing the preformed packing 20 from FIG. 8 in cross section.
  • the molding tool 21 consists of two mold halves 21a and 21b.
  • thin wall projections 22 or form sheets are arranged at corresponding points on the inside of the mold 23 already during the shaping process of the filling body 20.
  • the wall projections 22 create the free spaces which, after the shaping process, represent the separating slots 13 in the preformed filler 20.
  • filling bodies can be produced in one operation, which, although made of a uniform elastic material, have a desired, finely differentiated compression hardness. Consequently, particularly convenient fillers for upholstery can be produced in a cost-effective manner with this method.

Landscapes

  • Springs (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Support Of The Bearing (AREA)
  • Laminated Bodies (AREA)

Claims (11)

  1. Corps de garnissage en matériau élastique, notamment pour des rembourrages et des matelas,
    - avec au moins une face supérieure qui est aménagée en surface d'appui (11) supportant la charge et
    - avec des éléments de structure prévus dans la surface d'appui (11), qui dans la région (14) de leur base, éloignée de la surface d'appui (11), sont liés les uns aux autres,
    - les éléments de structure étant des lamelles (12) disposées les unes contre les autres qui sont définies par des fentes de séparation (13) dans la surface d'appui (11) et
    - les lamelles (12) étant aménagées localement dans le matériau élastique avec une longueur variable et/ou une section de lamelles variable de manière à obtenir sous charge un comportement d'amortissement différencié
    caractérisé par le fait que
    - la zone de la surface d'appui (11) comportant les lamelles (12) est entourée d'une zone de bord (16),
    - que la zone de bord (16) est en un matériau élastique qui est maintenu exempt de lamelles (12) et
    - que le matériau élastique, dans la zone de bord (16), présente une résistance à l'enfoncement qui est supérieure à la résistance à l'enfoncement dans la zone de la surface d'appui (11) comportant des lamelles (12).
  2. Corps de garnissage selon la revendication 1, caractérisé par le fait que la résistance à l'enfoncement du corps de garnissage(10) le long de la surface d'appui (11) peut être réglée de manière continue en faisant varier la profondeur des fentes de séparation et/ou la section des lamelles.
  3. Corps de garnissage selon la revendication 1 ou 2, caractérisé par le fait que les lamelles (12) sont disposées perpendiculairement à la surface d'appui (11) ou suivant un angle aigu par rapport à celle-ci .
  4. Corps de garnissage selon l'une des revendications 1 à 3, caractérisé par le fait que la surface d'appui (11) ainsi que les lamelles (12) sont couvertes par un élément de couverture (15).
  5. Corps de garnissage selon l'une des revendications 1 à 4, caractérisé par le fait que les lamelles (12) sont réalisées en un matériau élastique constitué de composants qui présentent des poids spécifiques et des résistance à l'enfoncement différents.
  6. Corps de garnissage l'une des revendications 1 à 5, caractérisé par le fait que les fentes de séparation (13) sont réalisées sous la forme d'entailles d'une profondeur comprise dans la plage allant de 2 mm à 15 cm.
  7. Corps de garnissage l'une des revendications 1 à 6, caractérisé par le fait que les lamelles (12) ont en section transversale une forme de rectangle, de carré, de triangle, de trapèze, de cerf-volant, de parallélogramme ou de losange.
  8. Corps de garnissage l'une des revendications 1 à 7, caractérisé par le fait qu'il est prévu comme matériau élastique des mousses de polyuréthane ou de polyester.
  9. Corps de garnissage l'une des revendications 1 à 7, caractérisé par le fait qu'il est prévu un matériau stabilisé et/ou préformé à base de fibres polyester.
  10. Corps de garnissage l'une des revendications 1 à 9, caractérisé par le fait que les lamelles (12) sont collées entre elles au niveau de leurs faces latérales.
  11. Corps de garnissage l'une des revendications 4 à 10, caractérisé par le fait que des éléments de glissement sont disposés entre l'élément de couverture (15) et la surface d'appui (11) ou entre les lamelles (12).
EP94111887A 1993-12-03 1994-07-29 Corps de garnissage en matériau élastique Expired - Lifetime EP0657126B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4341280A DE4341280C1 (de) 1993-12-03 1993-12-03 Füllkörper aus elastischem Material und Verfahren zu dessen Herstellung
DE4341280 1993-12-03

Publications (2)

Publication Number Publication Date
EP0657126A1 EP0657126A1 (fr) 1995-06-14
EP0657126B1 true EP0657126B1 (fr) 1997-10-08

Family

ID=6504139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94111887A Expired - Lifetime EP0657126B1 (fr) 1993-12-03 1994-07-29 Corps de garnissage en matériau élastique

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EP (1) EP0657126B1 (fr)
AT (1) ATE158931T1 (fr)
DE (3) DE4341280C1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19714804C1 (de) * 1997-04-10 1998-09-24 Lueck Gmbh & Co Kg Polsterkörper aus Schaumstoff
DE29908251U1 (de) 1999-05-07 1999-08-05 Hammerschmidt, Stefan, 48329 Havixbeck Anti-Dekubitusmatratze aus Schaumstoff mit 45 DEG - Einschnitten
JP6980539B2 (ja) * 2017-02-10 2021-12-15 西川株式会社 敷寝具用クッション体

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE399546A (fr) * 1932-11-16
US2901773A (en) * 1956-05-08 1959-09-01 Goodrich Co B F An improved foam rubber mold
DE1828545U (de) * 1960-12-09 1961-03-23 Wilhelm Neuner Schaumstoffplatte.
US3278955A (en) * 1964-06-11 1966-10-18 Dayco Corp Foam rubber article
US3512190A (en) * 1967-07-24 1970-05-19 Tenneco Chem Cushion construction
US3828378A (en) * 1972-07-31 1974-08-13 Johnson & Johnson Support means for the even distribution of body pressure
US4955096A (en) * 1989-06-28 1990-09-11 Bio Clinic Corporation Anatomically contoured convoluted foam pad
DE9300369U1 (de) * 1993-01-13 1993-03-25 Heerklotz, Siegfried, Dipl.-Ing., 4516 Bissendorf Flächiger Polsterkörper aus Schaumstoff, insbesondere Matratze
DE9310171U1 (de) * 1993-07-08 1993-12-16 Schwenk, Hans Ulrich, Dipl.-Ing., 72766 Reutlingen Matratze aus Schaumstoff
DE9319334U1 (de) * 1993-12-16 1994-03-03 Lück, Werner, 46395 Bocholt Matratze bzw. Matratzenauflage

Also Published As

Publication number Publication date
DE9401205U1 (de) 1994-04-14
DE4341280C1 (de) 1995-02-09
EP0657126A1 (fr) 1995-06-14
ATE158931T1 (de) 1997-10-15
DE59404272D1 (de) 1997-11-13

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