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EP0965294B1 - Sommier à lattes et lattes pour un tel sommier - Google Patents

Sommier à lattes et lattes pour un tel sommier Download PDF

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Publication number
EP0965294B1
EP0965294B1 EP98201998A EP98201998A EP0965294B1 EP 0965294 B1 EP0965294 B1 EP 0965294B1 EP 98201998 A EP98201998 A EP 98201998A EP 98201998 A EP98201998 A EP 98201998A EP 0965294 B1 EP0965294 B1 EP 0965294B1
Authority
EP
European Patent Office
Prior art keywords
slat
top portion
curved portions
slats
supporting surface
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
EP98201998A
Other languages
German (de)
English (en)
Other versions
EP0965294A1 (fr
Inventor
Charles Sleypen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT98201998T priority Critical patent/ATE230578T1/de
Priority to EP98201998A priority patent/EP0965294B1/fr
Priority to DE69810596T priority patent/DE69810596D1/de
Publication of EP0965294A1 publication Critical patent/EP0965294A1/fr
Application granted granted Critical
Publication of EP0965294B1 publication Critical patent/EP0965294B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A47C23/00—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases
    • A47C23/06—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using wooden springs, e.g. of slat type ; Slatted bed bases
    • A47C23/062—Slat supports
    • A47C23/063—Slat supports by elastic means, e.g. coil springs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C23/00—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases
    • A47C23/06—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using wooden springs, e.g. of slat type ; Slatted bed bases
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C23/00—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases
    • A47C23/06—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases using wooden springs, e.g. of slat type ; Slatted bed bases
    • A47C23/061—Slat structures

Definitions

  • the present invention relates to a slatted base for a bed, a seat or other seating or lying furniture comprising a frame and slats mounted thereon, the slats comprising a top portion forming a supporting surface of the slatted base, and at least one of the slats being made of wood or a synthetic material and extended, at both extremities of the supporting surface forming top portion, by a portion curved over an angle of at least 90°.
  • the invention also relates to a slat for use in such a slatted base
  • slatted bases In practice, there is always looked for new types of slatted bases.
  • One of the important properties of slatted bases is the resiliency thereof which is determining for the comfort properties.
  • different supporting elements for fixing the slats to the frame of the slatted base have already been proposed.
  • the resilient properties of the slats themselves are, however, only determined by the material, thickness, and cross-section of the slats.
  • DE-A-196 32 960 discloses for example slats for a slatted base, in particular for a bed, which are extended at their extremities with an integral curved, more particular U-shaped portion.
  • These known slats are made from an elastic synthetic material. They are not supported by separate resilient supporting elements but the curved portions are directly attached to the frame. These curved portions have such a reduced thickness, compared to the thickness of the top portions of the slats, and are so flexible that they are compressed resiliently when a weight is resting on the slats.
  • the curved portions of the slats disclosed in DE-A-196 32 960 act like the usual resilient supporting elements and do not influence the resilient properties of the top portions of the slats.
  • the resilient supporting elements form an integral portion of the slats
  • the resilient properties of the supporting surface forming top portions of the slats are still only determined by the material, thickness, and cross-section of these portions.
  • a similar slat for a slatted base is disclosed in FR-A-1 569 242, the curved extremities of which showing not a U-shape but rather a Z-shape.
  • An object of the present invention is to provide a new type of slat which enables to achieve substantially higher resilient properties, especially dynamic spring properties, for the supporting surface forming top portions compared to the conventional slats, in particular slats of a wood laminate.
  • the slatted base according to the invention is characterised in that the ends of the curved portions, opposite the supporting surface forming top portion of the slat, are substantially irrotatably connected to one another by a bottom element or portion extending between the two curved portions to form, together with these two curved portions and the supporting surface forming top portion, a closed loop, the curved portions themselves having a limited flexibility to exert tensile forces onto the top portion of the slat upon depression of this top portion.
  • the slat is nearly not compressible and thus not resilient at its extremities. Since the curved portions are however mutually connected substantially irrotatably by a bottom element or portion, the slats according to the invention can be fixed in the same way as the conventional wooden slats to the frame of the slatted base, more particularly through the intermediary of resilient supporting elements in order to provide also a resilient support in the side areas of the slatted base.
  • the ends of the curved portion of the slat are connected to one another by an integral bottom portion of the slat.
  • Such a slat is easy to be made either from a synthetic material or especially also from a wood laminate without having to connect the curved portions in an additional production step by means of a separate bottom element.
  • the slatted base shown in Figure 1 comprises a frame 1 and slats 2 mounted thereon.
  • the shape of the illustrated base is rectangular and is especially designed for a bed, i.e. for supporting a mattress, but all kinds of other shapes are possible, in particular for other applications such as seating furniture. These shapes are however not an essential feature of the invention and will thus not further be described.
  • the material the slats are made of is also not an essential feature of the invention.
  • the slats from a synthetic material, in particular from a glass, carbon or other type of fibre reinforced synthetic material.
  • the slats 2 comprise first of all a top portion 3 forming a supporting surface of the slatted base, similar to the conventional slats made of a wood laminate.
  • An essential difference with these conventional slats is however that, at both extremities of the top portion 3, they are extended by a portion 4 curved over an angle of at least 90°.
  • the portions 4 of the slat 2 are for example curved over an angle of 180°.
  • the free ends of the curved portions 4 are irrotatably fixed to one another, in particular by means of a cross-bar or lath 5 screwed or otherwise fixed, for example glued, to the free ends of the curved portions 4.
  • An essential feature of the slats according to the invention is further that the curved portions 4 have only a limited flexibility.
  • the curved portions 4 are more particularly so rigid or inflexible that considerable tensile forces are exerted by these curved portions 4 on the top portion 3 when this top portion 3 is depressed according to arrow 6.
  • the top portion 3 of the slat 2 may be much more flexible or thinner than conventional wooden slats. In this way, the top portion 3 can be depressed over a larger distance resulting thus in larger dynamic spring properties.
  • the slat 2 is, however, just like the conventional wooden slats, still substantially incompressible due to the limited flexibility of the curved portions 4.
  • the slats 2 can be mounted onto the frame 1 in the usual way through the intermediary of resilient supporting elements 9.
  • the required limited flexibility of the curved portions can be achieved by means of a synthetic material suitably reinforced by means of fibres or by thickened portions. According to the invention it has further been found that the required rigidity of the curved portions can also easily be obtained by means of a wood laminate. It has more particularly been found that the curved portions and the top portions and the top portions of the slats can be made of the same wood laminate so that the slats may have in particular a uniform thickness thus simplifying the production thereof.
  • the ends of the slat shown in Figure 2 are curved over 180°. According to the invention, these ends should be curved over an angle of at least 90°. Preferably, this angle is however larger, especially larger than 120°, in order to increase the dynamic spring properties of the slat to a larger extend.
  • the angle over which the ends of the slat 2 are curved could comprise for example 270°. In that case, these ends could be attached to the end faces of the cross-bars or laths 5.
  • the slats 2 do not have any free ends but the ends of both curved portions 4 are irrotatably connected to one another by means of a further extension of the slat, more particularly by an integral bottom portion 7, which extends opposite the top position 3, between the two curved portions 4. In this way, the slat 2 forms an integral closed loop.
  • FIG. 3 A preferred embodiment of a closed loop slat 2 is shown in Figure 3.
  • the curved portions 4 are curved over an angle of about 270° so that these curved portions 4 considerably increase the spring properties of the slat 2.
  • the bottom portion 7 of the slat 2 diverges again from the top portion 3 so that the movement of the top portion is not hampered by the bottom portion when being depressed.
  • upwardly bulged portions 8 are thus formed in the bottom portion of the slat. In the recesses formed by these bulged portions 8, the slat 2 is fixed through the intermediary of the resilient supporting elements 9 on top of the frame 1.
  • An advantage of the bulged portions 8 is that the curved portions 4 are curved over a greater angle so that a larger amount of potential energy can be stored therein when depressing the slat and that the top surface of the slat extends at a lower level above the frame 1 of the slatted base.
  • bottom portion 7 of the slat 2 forms an additional, smaller upwardly bulged portion 10 which is intended to give an extra support to the top portion of the slat when this top portion is depressed under a too large, in particular a too localised load.
  • the embodiment shown in Figure 4 differs from the embodiment of Figure 3 in that it comprises no bulged portion so that the top portion can be depressed only over a shorter distance. Moreover, the angle over which the curved portions are curved is somewhat smaller and comprises about 225°.
  • this angle comprises about 180° and the top portion extends at a relatively high level above the frame 1.
  • the top level of the slats they could possibly be supported by the supporting elements 9 underneath the top instead of the bottom portion.
  • this is also possible in the embodiments of the previous figures.
  • the inner curvature radius is preferably comprised between 3 and 10 cm and most preferably between 4 and 7 cm, depending on the desired spring properties and on the properties, in particular the flexibility, of the material of the slat.
  • the curvature radius should especially be sufficiently large in order to enable the curved portions to give the desired additional dynamic spring properties to the slats but should on the other hand be sufficiently small to be able to exert the required tensile forces to the top portions of the slats.
  • the slats 2 have always a somewhat convex upper surface. Such a shape is preferred according to the invention in view of the following effect obtained in combination with the curved portions.
  • the length of the top portions 3 When the slats 2 are depressed, the length of the top portions 3 will initially increase so that the curved portions 4 will be urged outwards and a tension will be created therein.
  • the length of the top portions 3 Upon further depressing the slats 1, the length of the top portions 3 will decrease again as they bend through and the tension or potential energy stored initially in the curved portions will be released so that the force required for depressing the slats is reduced. In other words, the slats are apparently softer in this phase due to this effect.
  • the curved portions take in their initial rest position and, upon further depression of the slat, are drawn towards one another.
  • a tension is built up again in the curved portions and increasing tensile forces are exerted into the top portion 3 providing an additional, progressive resistance against depression of this portion 3.
  • the top portion 3 of the slat is allowed to rise again, the potential energy stored in the previous phase in the curved portions is released again thus contributing to the dynamic spring properties of the slat.

Landscapes

  • Laminated Bodies (AREA)
  • Blinds (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Photoreceptors In Electrophotography (AREA)

Claims (13)

  1. Sommier à lattes comprenant un châssis (1) et des lattes (2) montées dessus, les lattes (2) comprenant une partie supérieure (3) formant une surface de support du sommier à lattes, et au moins une des lattes (2) étant en bois ou en matière synthétique et étant prolongée, aux deux extrémités de la partie supérieure (3) formant une surface de support, par une partie (4) incurvée sur un angle d'au moins 90°, caractérisé en ce que les extrémités des parties incurvées (4), situées à l'opposé de la partie supérieure (3) formant une surface de support de la latte, sont reliées l'une à l'autre d'une manière ne permettant sensiblement pas de rotation par un élément inférieur (5) ou une partie (7) qui s'étend entre les deux parties incurvées (4) pour former, conjointement avec ces deux parties incurvées (4) et la partie supérieure (3) formant une surface de support, une boucle fermée, les parties incurvées (4) elles-mêmes ayant une flexibilité limitée pour exercer des forces de traction sur la partie supérieure (3) de la latte (2) lors d'une dépression de cette partie supérieure (3).
  2. Sommier à lattes suivant la revendication 1, caractérisé en ce que lesdites parties incurvées (4) sont incurvées sur un angle d'au moins 120°, et de préférence sur un angle égal ou supérieur à 180°.
  3. Sommier à lattes suivant l'une des revendications 1 et 2, caractérisée en ce que lesdites extrémités de la partie incurvée (4) de la latte (2) sont reliées l'une à l'autre par une partie inférieure solidaire (7) de la latte.
  4. Sommier à lattes suivant la revendication 3, caractérisé en ce que ladite partie inférieure (7) de la latte (2) montre, à ses deux extrémités, une partie (8) renflée vers la partie supérieure (3) formant une surface de support de la latte (2), la latte étant supportée par le châssis (1) dans ces parties renflées (8).
  5. Sommier à lattes suivant l'une quelconque des revendications 1 à 4, caractérisé en ce que lesdites parties incurvées (4) sont sensiblement incompressibles dans une direction perpendiculaire à la surface de support.
  6. Sommier à lattes suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que les lattes (2) sont montées sur le châssis (1) par l'intermédiaire d'éléments de support flexibles (9).
  7. Sommier à latte suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que les parties incurvées (4) montrent un rayon de courbure interne compris entre 3 et 10 cm, de préférence entre 4 et 7 cm.
  8. Latte à utiliser dans un sommier à lattes suivant l'une quelconque des revendications 1 à 7, la latte (2) comprenant une partie supérieure (3) formant une surface de support du sommier à lattes et étant prolongée, aux deux extrémités de la partie supérieure (3) formant une surface de support, par une partie (4) incurvée sur un angle d'au moins 90°, de préférence sur un angle d'au moins 120° et très préférentiellement sur un angle d'au moins 180°, caractérisée en ce que les extrémités des parties incurvées, situées à l'opposé de la partie supérieure (3) formant une surface de support de la latte, sont reliées l'une à l'autre d'une manière ne permettant pas de rotation et en ce que les parties incurvées (4) elles-mêmes ont une flexibilité limitée pour exercer des forces de traction sur la partie supérieure (3) de la latte (2) lors d'une dépression de cette partie supérieure (3).
  9. Latte suivant la revendication 8, caractérisée en ce que les parties incurvées (4) présentent un rayon de courbure interne compris entre 3 et 10 cm, de préférence entre 4 et 7 cm.
  10. Latte suivant l'une quelconque des revendications 8 et 9, caractérisée en ce que lesdites extrémités de la partie incurvée (4) de la latte (2) sont mutuellement reliées par une partie inférieure (7) solidaire de la latte, la partie supérieure (3) formant une surface de support, les deux parties incurvées (4) et la partie inférieure (7) de la latte (2) formant une boucle fermée.
  11. Latte suivant l'une quelconque des revendications 8 à 10, caractérisée en ce qu'elle présente une épaisseur sensiblement uniforme.
  12. Latte suivant l'une quelconque des revendications 8 à 11, caractérisée en ce que les parties incurvées (4) sont sensiblement incompressibles dans une direction perpendiculaire à la surface de support.
  13. Latte suivant l'une quelconque des revendications 8 à 12, caractérisée en ce que ladite latte (2) est réalisée en un stratifié à base de bois.
EP98201998A 1998-06-08 1998-06-08 Sommier à lattes et lattes pour un tel sommier Expired - Lifetime EP0965294B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT98201998T ATE230578T1 (de) 1998-06-08 1998-06-08 Lattenrost und latten dafür
EP98201998A EP0965294B1 (fr) 1998-06-08 1998-06-08 Sommier à lattes et lattes pour un tel sommier
DE69810596T DE69810596D1 (de) 1998-06-08 1998-06-08 Lattenrost und Latten dafür

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98201998A EP0965294B1 (fr) 1998-06-08 1998-06-08 Sommier à lattes et lattes pour un tel sommier

Publications (2)

Publication Number Publication Date
EP0965294A1 EP0965294A1 (fr) 1999-12-22
EP0965294B1 true EP0965294B1 (fr) 2003-01-08

Family

ID=8233813

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98201998A Expired - Lifetime EP0965294B1 (fr) 1998-06-08 1998-06-08 Sommier à lattes et lattes pour un tel sommier

Country Status (3)

Country Link
EP (1) EP0965294B1 (fr)
AT (1) ATE230578T1 (fr)
DE (1) DE69810596D1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR370517A (fr) * 1906-06-30 1907-02-11 Elie Dieudonne Henri Lambotte Sommier à surface d'appui bombée, élastique dans le sens transversal seulement, pour lits de tous genres
CH268125A (de) * 1944-08-29 1950-05-15 Leslie Epstein Isaac Polster mit Federnsatz.
DE870327C (de) * 1950-03-18 1953-03-12 Kommanditbolaget Irving & Fris Federnde Liege- bzw. Sitzunterlage
CH375501A (de) * 1960-02-17 1964-02-29 Hasenfratz Geb Ruhebett
BE716502A (fr) * 1967-07-04 1968-11-04
DE19632960A1 (de) 1996-08-16 1998-02-19 Rummel Matratzen Gmbh & Co Elastische Kunststoffleiste, insbesondere für Lattenroste von Liegemöbeln

Also Published As

Publication number Publication date
ATE230578T1 (de) 2003-01-15
DE69810596D1 (de) 2003-02-13
EP0965294A1 (fr) 1999-12-22

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