EP0918478A1 - Federanordnung für untermatratzen - Google Patents
Federanordnung für untermatratzenInfo
- Publication number
- EP0918478A1 EP0918478A1 EP97921661A EP97921661A EP0918478A1 EP 0918478 A1 EP0918478 A1 EP 0918478A1 EP 97921661 A EP97921661 A EP 97921661A EP 97921661 A EP97921661 A EP 97921661A EP 0918478 A1 EP0918478 A1 EP 0918478A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- spring body
- arrangement according
- mattress
- central axis
- 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
Links
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
- A47C27/20—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with springs moulded in, or situated in cavities or openings in foamed material
-
- 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
- A47C23/002—Spring mattresses with rigid frame or forming part of the bedstead, e.g. box springs; Divan bases; Slatted bed bases with separate resilient support elements, e.g. elastomeric springs arranged in a two-dimensional matrix pattern
-
- 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
- A47C27/04—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with spring inlays
- A47C27/06—Spring inlays
- A47C27/065—Spring inlays of special shape
-
- 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
-
- 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
Definitions
- the present invention relates to a spring arrangement for lower mattresses, in particular for the elastic support of the individual supporting bodies of an arrangement of a plurality of supporting bodies arranged distributed over at least part of the lower mattress, for supporting the upper mattress in this area, or as the spring core of a mattress.
- Such a spring arrangement is known from EP 0 401 712 BI.
- This document describes a mattress system in which, instead of a conventional slatted frame to support the top mattress, a bottom mattress is provided, which is formed from a multiplicity of supporting bodies arranged in rows and columns over the lying surface.
- the supporting bodies are in turn elastically supported on U-profiles which extend in the longitudinal direction of the lying surface. In this way, a point-elastic contact surface is created for the top mattress, which leads to improved lying comfort, especially when the patient is lying on the side.
- a problem with this known mattress system is that the point-elastic supported supporting bodies have low tilt and shear stability.
- the design of the spring elements supporting the support body leads to a buckling of the spring elements when the load is not central and thus to a tilting or shearing of the support body.
- tilt stability is therefore at best only in the direction of the longitudinal axis of the spring elements.
- Further spring elements for bottom mattresses are known from the German utility models G 93 17 114.5 and G 94 04 021.4. These spring elements also do not ensure sufficient tilting and shear stability, since here too there is a risk of the spring elements buckling when the supporting bodies are not loaded centrally.
- the G 94 04 021.4 shows in FIGS. 2 and 4 measures which are obviously intended to prevent such buckling. However, these are not sufficient and are also expensive to produce.
- Coil springs made of metal are not very suitable for support because they are too heavy. Metal is also undesirable as a material. On the other hand, no suitable spiral springs can be produced from plastic.
- the invention is therefore based on the object of developing the spring arrangement of the type mentioned at the outset in such a way that these disadvantages do not occur.
- sufficient tilting and shearing stability of the spring arrangement is to be achieved in order to prevent tilting and shearing off of supporting bodies of a base mattress.
- the weight of the spring arrangement should be as low as possible.
- an internally essentially hollow spring body (1) is provided, the outer walls of which are arranged substantially uniformly about a central axis extending in the spring direction.
- the spring body is essentially hollow on the inside, the spring force counteracting a load on the support body is not transmitted to the support body centrally, but further outside, in particular in the edge region.
- the outer walls of the spring body which are arranged substantially uniformly around the central axis, practically form a large number of interconnected spring elements, which support with. Due to the external arrangement of these spring elements, tilting of the support body is largely prevented even if the load-bearing body is not subjected to any central load. The shear stability of the spring arrangement is also improved in this way.
- the spring body can have a network or honeycomb structure, at least in sections.
- the mesh of the net structure or the honeycomb deforms, as a result of which elastic compression of the spring body is achieved with particularly high elasticity. Good permanent elasticity properties are also obtained.
- the spring body can have a closed cell structure at least in sections.
- the cells are correspondingly deformed here, which in turn leads to a particularly high elasticity of the spring body, which is also particularly uniform.
- the wall thickness of the spring body and / or the material thickness of the mesh, honeycomb or cell structure By varying the wall thickness of the spring body and / or the material thickness of the mesh, honeycomb or cell structure, a desired, in particular progressive, spring characteristic can be set.
- the spring body can be thick at the bottom and thin at the top.
- the shear and tilting stability of the spring arrangement can be further improved by inclining the outer walls of the spring body.
- the tilt and shear stability can be further improved by the shape of the cross section of the spring body.
- the spring body can have a triangular, quadrangular or polygonal cross section. The more corners the cross-section has, the more even the tilt and shear stabilization the spring arrangement around the central axis.
- a circular cross section of the spring body is therefore particularly preferred. As a result, tilting and shear stability are obtained equally well in all directions.
- the compression behavior of the spring body is improved by a smaller cross-sectional diameter of the spring body in the middle than at its upper and lower end or by a truncated pyramid-shaped design, since this can compensate for an outward curvature of the central section of the spring body .
- this bulging outwards can go so far in the middle that the tube wall in the central section of the spring body completely compresses radially outside the contact surface of the spring body when it is compressed located. This can cause the spring body to buckle and collapse. In other words, the spring characteristic suddenly breaks off, which is of course undesirable.
- the spring body can in principle also have outwardly curved side walls if, overall, it has a corresponding stability.
- the spring body is designed as a bellows. This also gives very good support properties.
- Plastic is particularly suitable as the material for the bellows.
- a fastening element can be provided according to one embodiment of the invention, which is disc-shaped or annular and comprises outward-pointing projections, which in recesses can be used against the spring body.
- This fastening element which is preferably already connected to the supporting body or the base and possibly also integrally formed with it, can be used advantageously in particular in conjunction with a spring body having a mesh or honeycomb structure, since the projections of the fastening element engage in the mesh of the Network or the honeycomb can be trained.
- the elasticity of the spring body also automatically results in a snap connection.
- Another suitable connection consists in a type of bayonet lock in which the fastening element is screwed into the spring body or vice versa.
- the supporting body and the spring body are already firmly connected to one another, in particular welded, during manufacture, and on the other hand the base has a fastening element according to the invention, with which the spring body can be attached to the base.
- the spring bodies can thus be easily installed and, if necessary, replaced.
- the spring arrangement is preferably made of flexible plastic and in particular is designed as a one-piece molded part. This creates a particularly light and inexpensive to manufacture spring arrangement.
- the supporting bodies for an upper mattress preferably consist of hard plastic and are provided with perforations in order to ensure that moisture is adequately transported away from the upper mattress.
- the supporting bodies can also consist of wood, in particular of a plywood panel. This is preferably produced by punching, the perforation also being punched out. Stamping has the advantage that the production is inexpensive, so that for the first time a wood look can be obtained which is particularly appealing.
- the spring elements are preferably tapped into the plywood panel on the underside.
- the spring body is formed by a plurality of bent webs which are arranged distributed around the central axis, the legs of which can each be elastically collapsed.
- the kinked webs are preferably designed as spreading elements, which each stretch a spring element, for example a rubber band, stretched over the kink when the legs are folded together.
- a spring element for example a rubber band
- At least one additional spring element can be present in the area of the central axis of the spring arrangement. This can be advantageous to increase the spring force. It is important, however, that the outer spring elements continue to make at least a substantial contribution to the overall spring force, since otherwise the tilting and shear stability of the spring arrangement is adversely affected.
- Embodiments of the invention are shown in the drawing and are described below. They show, each in a schematic representation,
- Figure 1 shows a first variant of an inventive
- Figure 2 shows a second variant of an inventive
- Figure 3 shows a modification of the spring body of
- FIG. 4 the development of the outer wall of the spring body from FIG. 2,
- FIG. 5 shows a further variant of a spring body according to the invention in a perspective view
- Figure 6 shows a modification of the spring body of
- Figure 7 is a plan view of an inventive
- Figure 8 is a side view of the fastener of Figure 7, and
- Figure 9 shows a cross section through one of four
- the spring body 1 shown in FIG. 1 is hollow on the inside and has a square cross section.
- the walls 2 of the spring body 1 surround at a distance a central axis I which extends along the spring direction of the spring body 1.
- the walls 2 of the spring body 1 are in a mesh or Honeycomb structure. That is to say, the walls 2 consist of a multiplicity of webs 3 which intersect and are connected to one another, preferably of a flexible plastic. Rectangular end elements 4 are provided on the top and bottom of the spring body 1. The end elements 4 serve to support the spring element 1 on a base plate or to support a support body (not shown here) for an upper mattress.
- the walls 2 of the spring body 1 deform elastically by changing the crossing angles of the webs 3 and by deforming the webs 3 themselves.
- the four side walls 2 of the spring body 1 practically represent a series of spring elements arranged at a distance from the central axis I, which allow elastic support, for example, of a support body with high tilt and shear stability.
- the high tilt and shear stability of the spring body 1 of Figure 1 is the same in the direction of all four side walls 2 of the spring body 1.
- This spring element is therefore particularly advantageously suitable for supporting individual supporting bodies of a sub-mattress which are supported with point elasticity.
- the spring body has a circular cross section.
- the wall 2 of the spring body 1 surrounds the central axis I on all sides at the same distance.
- the spring body 1 is thus designed to be rotationally symmetrical about the central axis I.
- the wall 2 of the spring body 1 consists of webs 3 which are arranged in a mesh or honeycomb structure and bring about the elasticity of the spring body 1 in the direction of the central axis I.
- a is on the top and bottom of the spring body 1 annular web 4 is provided.
- this spring body 1 The tilting and shearing stability of this spring body 1 is the same in all directions about the central axis I. Even with decentralized loading of this spring body 1 in any direction, optimal elastic support is therefore guaranteed.
- the modification of the spring body 1 of FIG. 2 shown in FIG. 3 can also prevent the central region of the spring body 1 from bulging too much when compressed and the risk of the spring body 1 buckling. This danger arises in particular when the central region of the spring body 1 bulges outwards to such an extent that the wall 2 of the spring body 1 is in this region outside the base area 5 of the spring body 1. In the case of the spring body 1 of FIG. 3, which is quasi-waisted in the middle, this outward bulging of the wall 2 of the spring body 1 is compensated for by the reduced cross section in the central region of the spring body 1.
- the network or honeycomb structure of the spring body 1 is only indicated by corresponding lines.
- Figure 4 shows a development of the wall 2 of the spring body 1 of Fig. 2, from which the network or honeycomb structure of the wall 2 is particularly clear. As can be seen, the webs 3 intersect at a right angle in this embodiment. By changing the angle between the webs 3, an elastic deformation of the spring body 1 is possible.
- the spring body 1 shown in FIG. 5 also has a circular cross section. However, the cross-sectional diameter decreases uniformly from the bottom to the top of the spring body 1. Here too the network or honeycomb structure only indicated by lines.
- the decrease in the cross-sectional diameter practically causes an inclination of the plurality of spring elements, which represents the wall 2 of the spring body 1, to the central axis I.
- This on the one hand compensates for an outward bulging of the wall 2 and, on the other hand, the tilting and shear stability of the spring body 1 further increased.
- the compensation of the outward curvature of the wall 2 of the spring body 1 can be further increased by the fact that the decrease in the cross-sectional diameter from the underside to approximately the middle of the spring body 1 is chosen to be stronger than from the center of the spring ⁇ body up to the top.
- a spring body configured in this way is shown in FIG.
- FIG. 7 shows the top view of a fastening element 6 which can be used in connection with a spring body 1 according to the invention.
- FIG. 8 shows its side view.
- the fastener 6 shown has the shape of a flat ring, which is provided on its outer edge with radially outward projections 7.
- the projections 7 are arranged uniformly distributed around the outer edge of the annular section of the fastening element 6 and are designed for engagement in the meshes 8 of the mesh or honeycomb structure of the spring body 1.
- the spring body 1 can interact with the fastening element 6 as a snap-in connection.
- the inner diameter of the spring body 1 and the outer diameter of the fastening element 6 are adapted to one another.
- the mutually facing edges of the spring body 1 and the fastening element 6 can be designed to be chamfered in order to facilitate insertion of the fastening element 6.
- the fastening element 6 is connected to a plate 9. This can be a base or cover plate for the spring body 1, for example a support body for an upper mattress.
- the plate 9 is preferably designed as a base plate which can be fastened in the frame of a base mattress.
- Spring bodies 1 according to the invention can then be plugged onto the base plate 9 with the fastening element 6, this being possible in practically any orientation due to the largely rotationally symmetrical design of the fastening element 6.
- the spring body 1 can preferably already have a supporting body for an upper mattress, in particular be welded to one.
- FIG. 9 shows a spring body 1, which is formed from four expansion elements 10.
- the spreading elements 10 each comprise two legs 11 and are uniform about the central axis
- the legs 11 of the expansion elements 10 are each inclined outwards to the central axis I and meet in the middle of the expansion element 10, where the expansion element 10 is provided with an outward-pointing knee 12.
- the respective other end of the legs 11 is fixed on a base plate 13 or on a carrier plate 14. When a compression force is exerted on the carrier plate 14, the legs become
- All the illustrated variants of the spring body 1 according to the invention are distinguished by good spring properties, above all a high permanent elasticity, and by a high tilting and shear stability in all directions around the central axis I.
- the spring body 1 can be made of, in particular, flexible plastic. It is therefore light in weight and easy to manufacture.
- All of the variants of the invention that are carried out can also be used as spring elements for mattresses.
- the spring elements replace the innersprings of conventional innerspring mattresses, the number of spring elements compared to innerspring mattresses can advantageously be reduced, since the spring elements can be designed to be relatively large, since they have the above-mentioned advantageous support properties. Because of the large support surface of the spring elements, a smaller number of pieces, for example 200 to 400 pieces, is sufficient to support the mattress. This results in a considerable cost reduction, which makes the use of such spring elements instead of conventional spring cores economical.
- the spring elements can also be installed directly in mattresses, i.e. without a cover plate. The mattress material itself then acts as a cover plate or as a support element.
Landscapes
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29724344U DE29724344U1 (de) | 1996-04-19 | 1997-04-18 | Federanordnung für Untermatratzen |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29607141U DE29607141U1 (de) | 1996-04-19 | 1996-04-19 | Federanordnung für Untermatratzen |
DE29607141U | 1996-04-19 | ||
PCT/EP1997/001962 WO1997039660A1 (de) | 1996-04-19 | 1997-04-18 | Federanordnung für untermatratzen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0918478A1 true EP0918478A1 (de) | 1999-06-02 |
EP0918478B1 EP0918478B1 (de) | 2000-09-13 |
Family
ID=8022836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97921661A Expired - Lifetime EP0918478B1 (de) | 1996-04-19 | 1997-04-18 | Federanordnung für untermatratzen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0918478B1 (de) |
AT (1) | ATE196229T1 (de) |
DE (2) | DE29607141U1 (de) |
WO (1) | WO1997039660A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1011070A3 (nl) * | 1997-03-27 | 1999-04-06 | Imhold Naamloze Vennootschap | Schuimveer. |
US10920842B2 (en) * | 2007-09-21 | 2021-02-16 | Elisana S.A.R.L. | Foam spring for pillows, cushions, mattresses or the like and method for manufacturing such a foam spring |
US8746662B2 (en) * | 2007-10-23 | 2014-06-10 | Elisna S.A.R.L. | Foam spring for pillows, cushions, mattresses or the like and method for manufacturing such a foam spring |
DE202012101767U1 (de) * | 2012-05-14 | 2013-08-19 | Diemer & Dr. Jaspert GbR (vertretungsberechtigter Gesellschafter: Herrn Dr. Bodo F. Jaspert, 85630 Grasbrunn) | Federelement |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE859468A (nl) * | 1977-10-07 | 1978-04-07 | Poppe Willy | Schuimveer |
CH681950A5 (de) * | 1989-06-08 | 1993-06-30 | Superba Sa | |
PT100923B (pt) * | 1992-10-01 | 1997-09-30 | Joao Roberto Dias De Magalhaes | Elementos elasticos e respectivos componentes, fabricados por injeccao em materiais plasticos - nao metalicos - destinados a colchoes, assentos ou outros fins |
DE9404021U1 (de) * | 1994-03-10 | 1995-04-13 | Senne Lizenz und Produkte GmbH, 33758 Schloß Holte-Stukenbrock | Federelement für Polsterelemente |
DE9317114U1 (de) * | 1993-11-10 | 1994-12-08 | Froli Kunststoffe Heinrich Fromme, 33758 Schloß Holte-Stukenbrock | Polsterelement mit einer Vielzahl von in regelmäßigen Mustern angeordneten Federelementen |
DE29501778U1 (de) * | 1995-01-30 | 1995-06-14 | Federnwerke Marienberg Gmbh, 09496 Marienberg | Taschenfederkern |
-
1996
- 1996-04-19 DE DE29607141U patent/DE29607141U1/de not_active Expired - Lifetime
-
1997
- 1997-04-18 EP EP97921661A patent/EP0918478B1/de not_active Expired - Lifetime
- 1997-04-18 WO PCT/EP1997/001962 patent/WO1997039660A1/de active IP Right Grant
- 1997-04-18 AT AT97921661T patent/ATE196229T1/de active
- 1997-04-18 DE DE59702355T patent/DE59702355D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9739660A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE29607141U1 (de) | 1996-07-25 |
DE59702355D1 (de) | 2000-10-19 |
EP0918478B1 (de) | 2000-09-13 |
WO1997039660A1 (de) | 1997-10-30 |
ATE196229T1 (de) | 2000-09-15 |
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