EP0734668A1 - Corps flat rembourré - Google Patents

Corps flat rembourré Download PDF

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Publication number
EP0734668A1
EP0734668A1 EP96104673A EP96104673A EP0734668A1 EP 0734668 A1 EP0734668 A1 EP 0734668A1 EP 96104673 A EP96104673 A EP 96104673A EP 96104673 A EP96104673 A EP 96104673A EP 0734668 A1 EP0734668 A1 EP 0734668A1
Authority
EP
European Patent Office
Prior art keywords
wave
grid
webs
grid plate
body according
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
EP96104673A
Other languages
German (de)
English (en)
Other versions
EP0734668B1 (fr
Inventor
Siegfried Dipl.-Ing. Heerklotz
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Individual
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Individual
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Filing date
Publication date
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Publication of EP0734668A1 publication Critical patent/EP0734668A1/fr
Application granted granted Critical
Publication of EP0734668B1 publication Critical patent/EP0734668B1/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
    • 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
    • A47C27/144—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities inside 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
    • A47C27/15—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays consisting of two or more layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B68—SADDLERY; UPHOLSTERY
    • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
    • B68G13/00—Upholstered panels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24322—Composite web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24686—Pleats or otherwise parallel adjacent folds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • Y10T428/24702—Parallel corrugations with locally deformed crests or intersecting series of corrugations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • Y10T428/24711—Plural corrugated components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • Y10T428/24711—Plural corrugated components
    • Y10T428/24719—Plural corrugated components with corrugations of respective components intersecting in plane projection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • Y10T428/24711—Plural corrugated components
    • Y10T428/24727—Plural corrugated components with planar component

Definitions

  • the invention relates to a flat cushion body consisting of at least one grid plate made of resilient material with a plurality of grid webs delimiting grid openings at the edge.
  • the grid plate has a flat basic design, and the cushioning or spring action of the cushion body in the event of a load is based on a compression deformation of the resilient material, in which known case foam, preferably foam rubber, essentially only at the crossing points, with high peak voltages due to kinks in the foam, which quickly lead to destruction.
  • foam preferably foam rubber
  • the invention has for its object to provide a flat cushion body of the type mentioned, which has an excellent spring action with excellent ventilation and has a long life.
  • the grating plate is designed as a corrugated profile body with grating webs passing through the wave extremes of its wave contour and at least many of these grating webs, preferably spaced apart from one another, preferably transversely to at least one direction of wave propagation - in each case consistently over a large part of a wavelength are.
  • the cushioning material there is no compression deformation of the cushioning material, which proves to be unfavorable for the service life of the cushioning body, but rather a predetermined limited bending deformation of the grid plate takes place according to the invention due to its design as a corrugated profile body, in which the grid webs are largely independent in the manner of individual bending springs can be deformed from each other.
  • the cushion body according to the invention has spring properties which are distinguished by a high degree of point elasticity.
  • the wave contour ensures a favorable stress curve and a uniform absorption of the deformation work in the upholstery material, which favors the long life of the upholstery body.
  • a single grid plate designed according to the invention as a corrugated profile body may be sufficient for short spring travel, while with increased cushioning requirements, e.g. for a mattress, the cushion body according to the invention can comprise two or more such grids stacked one above the other, the upper grille with its lower wave extremes (wave minima) being supported on the upper wave extremes (wave maxima) of the next lower grid.
  • lattice plates with a wave propagation direction offer themselves, the wave crests and valleys of which are largely formed by lattice webs running longitudinally to them.
  • the grid plates are alternately superimposed with directions of wave propagation that are orthogonal to one another, so that the grid webs running in wave crests and troughs each cross in pairs. Even when the grid plates are stretched due to the load, they offer enough leeway so that the support engagement of the grid webs is always retained.
  • grating plates the grating webs of which are in support engagement are designed to be fixable to one another by material or form locking.
  • Lattice webs can form point-like areas in wave crests and troughs that are exactly opposite in pairs when stacked.
  • grid plates can also be used for this purpose, the wave contour of which is characterized by wave propagation in two different directions. The then punctiform wave extremes are traversed by lattice webs and come into support engagement when several lattice plates are layered one above the other, where they are fixed to one another.
  • upholstery plates according to the invention can also be used with advantage without the spacing of the grid webs transverse to the direction of wave propagation.
  • Thermoplastic like TPE, is manufactured by injection molding or by extrusion and stamping. Spring steel plates are bent and punched.
  • Fig. 1 is shown as a flat cushion body as a whole with 1 grid plate with a rectangular upholstery surface in plan view.
  • the grid plate 1 consists of resilient material such as, in particular, elastomeric material, possibly with fiber inclusions, and comprises grid webs 2 and 3 in a uniformly repeating pattern which delimit a large number of grid openings 4 on the edge.
  • the grid plate 1 is designed as a corrugated profile body with grid webs 2 passing through the wave extremes of its wave contour.
  • the wave extremes are formed by wave crests 5 and wave troughs 6 of a wave contour with a wave propagation direction, constant wall thickness and the same wavelength from top 7 and bottom 8 of the corrugated profile body.
  • the lattice webs 2 each extend over sections of the wave crests 5 and troughs 6 in their longitudinal direction. At the end, the lattice webs 2 open into the lattice webs 3, each forming a node 17, which extend in the direction of wave propagation.
  • the mutual, constant, each running continuously over almost an entire wavelength - that is, connection-free - transverse distance between adjacent, parallel to each other over the entire length of the grating plate 1 in the wave propagation direction 3 defines a longitudinal distance between adjacent grating webs 2 transverse to the direction of wave propagation, whereby the stiffening effect of the corrugated profile shape perpendicular to the direction of wave propagation largely canceled and a high point elasticity of the grid plate 1 is achieved.
  • the longitudinal distance between adjacent grating webs 2 is equal to the transverse dimension, based on the direction of wave propagation, of the grating openings 4.
  • the pattern of the webs 2 and 3 forms, seen in plan view, a pattern that is repeated in two directions.
  • the repeat length is the single or a whole multiple of the wavelength.
  • the wavelength can instead be a single or a whole multiple of the repeat length.
  • the repeat length and the wavelength are the same in both directions.
  • the lattice webs 2, 3 passing through the wave extremes are shaped and arranged in such a way that when the lattice plate 1 is turned by rotating about one of the two central axes 16 in its central plane 16 by 180 ° wave minima and wave maxima, they alternate with one another, seen in plan view, congruently.
  • wave maxima and wave minima come to an alternate pair, as seen in plan view, in part.
  • the lattice webs 2 between the adjacent lattice webs 3 are each offset in the center.
  • the lattice webs 2 are extended by lugs 9, which extend beyond the respectively adjacent lattice web 3 and are directed towards one another.
  • the lugs 9 reduce the longitudinal distance between two grid webs 2, so that when a number of grid plates t with crossing wave crests 5 and wave troughs 6 are loosely superimposed, the permissible tolerance for mutual displacement is increased, in which the support engagement between two grid webs is still guaranteed and therefore no fixation the grid webs 2 is required.
  • the lugs 9 correspond to lugs 9 'which start from the edge 10 of the grid plate 1, which, like the other three edges of the grid plate 1, is kept free from grid openings 4.
  • the thickness of the lattice webs 2, 3 can also have different dimensions in the direction of wave propagation. As a result, successive zones of different spring hardness or bending stiffness of the grid plate 1 can also be produced in the direction of wave propagation.
  • a grid area 3 shows a first area A with a given web thickness, to which an area B with a reduced web thickness and a correspondingly increased wave amplitude of the wave contour adjoins, so that the wave profile of the grid plate 1 regardless of such differences has a constant overall height in the web thickness.
  • the peak voltages can be reduced by varying the thickness of the grid webs 2, 3 and the deformation work can be distributed evenly.
  • the grid plate 1 has the same basic pattern of the grid webs 2 ′ and 3 delimiting the grid openings 4.
  • the wave contour of the grating plate 1 is characterized by wave propagation in two different directions, the grating webs 2 ', 3 each passing through the wave extremes at one point. Due to this wave contour with two different wave shapes that run horizontally to one another in the example shown, the grid plate 1 is designed in the manner of an egg carton. When the grid plate 1 is rotated about one of its central axes 16 by 180 °, wave maxima and wave minima, viewed in plan view, each completely or partially mutually congruent.
  • the nodes 17 are formed in the regions 18 of the wave extremes such that they can be fixed there cohesively to the lattice webs 2 ′, 3 of the adjacent lattice plate 1 that come into contact with each other when a plurality of lattice plates 1 are stacked one on top of the other.
  • FIG. 13 shows a similar exemplary embodiment of the invention in detail with lattice webs 2 ''',3''''' which pass through the wave extremes.
  • FIG. 7 illustrates, using a section of the grating plate 1, a top view of an embodiment in which the grating webs 2, which extend over partial lengths of the wave crests 5 and troughs 6, end at the end, with the formation of nodes 17, in grating webs 3 ′ which extend obliquely to the direction of wave propagation. All of the grating webs 2, 3 'adjacent to the direction of wave propagation are each spaced apart in this direction continuously over almost an entire wavelength, so that the pairs of grating webs 3' forming the individual spiral springs can largely deform independently of one another. This results in a high point elasticity of the grid plate 1.
  • the grid webs 2 form here with the grid webs 3 'on both sides in each case a pair of grid openings 4', which have the basic shape of isosceles triangles in plan view.
  • the pairs of triangles or lattice openings 4 ' are offset in the longitudinal direction of the wave crests and valleys 5, 6 from one another in the manner shown in FIG. 7 and are nested one inside the other.
  • the longitudinal distance between the lattice webs 2 running in the longitudinal direction of the wave crests and valleys is formed by comparatively narrow opening gaps 11 between the individual webs 2.
  • the design of the grating plate 1 according to FIG. 7 offers a maximum tolerance towards Displacements of two grid plates 1 lying one above the other 1. This embodiment reacts more gently due to the overall longer length of the web.
  • the upper grid plate 1 which in the example shown is equilateral, is shown rotated by 90 ° about a vertical axis.
  • the upper grid plate 1 with its lower wave extremes, the grid webs 2 running in the longitudinal direction of the wave troughs 6, on the upper wave extremes, the grid webs 2 running in the longitudinal direction of the wave crests 5, is the next lower grid plate 1 supported each other in the middle, as can be seen in particular from FIGS. 2 to 4.
  • the predetermined mutual position of the individual lattice panels 1 can be maintained by mutual mutual fixation, as illustrated by the edge-side fastening points 14, via material or form-fitting.
  • the pattern of the lattice webs 2, 3, seen in plan view is chosen so that when mirroring on a lying in the top view plane, the pattern bisecting axis 15 (Fig. 2) the grating webs 2 passing through the extremes of the wave intersect, one above the other in the example shown.
  • the axis 15 here is the bisector through a corner point.
  • the upholstery body has an upholstery surface which, when viewed from above, has an outer shape which is invariant with respect to rotation by at least a certain angle - for example 90 ° for a square - the stacking of individual grating plates 1 with only one direction of wave propagation can result in an upholstery body with one single, identical shape of the grid plate 1 can be brought about by coordinated pattern selection and offset to the edge.
  • Such shapes are, for example, a circle or an equilateral polygon.
  • two different forms of the grid plate 1 are required to form a cushion body with a plurality of stacked grid plates 1 according to FIG. 8, in which the wave propagation directions are at right angles can run to each other.
  • lattice plates 1 with two wave propagation directions and / or point-like formation of the wave extremes, with appropriate selection and offset of the pattern to the edge, identical lattice plates 1 can also be stacked in these cases.
  • FIGS. 9 and 10 show two exemplary embodiments of a grating plate 1 with a direction of wave propagation and, compared to the previous exemplary embodiments, arcuate grating webs 3 ′′ and 3 ′′ ′′.
  • the stretching in the wave propagation direction that occurs when the grating plate 1 is loaded due to the wave profile being laid flat is compensated for by upsetting the arc-shaped grating webs 3 ′′ or 3 ′′ ′′ extending in the wave propagation direction, so that the displacement of two superposed grating plates 1 against one another is reduced.
  • This allows the realization of larger wave amplitudes with greater rigidity and greater spring travel and thus higher cushion bodies with the same number of grid plates 1, which leads to a reduction in the total costs.
  • the spring action is softer due to the arcuate lattice webs 3 ′′ or 3 ′′ ′′ due to the increased length of the spiral springs formed by the lattice webs 3 ′′ or 3 ′′ ′′.
  • FIG. 11 and 12 show two exemplary embodiments of a grating plate 1 according to the invention, which can originally be produced from corrugated profile plates with a wave propagation direction, but after introducing the grating pattern with punctiform formation of the wave extremes, several wave propagation directions - in FIG. 11 three, in FIG. 12 four - show.
  • the webs 2 '', 3 '' '' or 2 ''' ', 3' '' '' form circular widenings in the area 18, on which they come into support engagement and are materially bonded when two or more grid plates 1 are stacked on top of one another on the grating webs 2 '', 3 '' '' or 2 '' ', 3' '' '' of the neighboring grating plates 1 that come into support engagement with them, for example, can be fixed by adhesive or welding.
  • the nodes 17 each lie between the areas 18.
  • the pattern of the lattice webs 2 '', 3 '''' is selected so that when mirroring at the central axes 16 of the upholstery surface selected here by way of example, the areas 18 lie one above the other, so that a multilayer Upholstery body can be realized with only one grid plate 1 by turning this grid plate 1 in the following position about the central axis 16 by 180 °, whereby the troughs 6 of the upper grid plate 1 with the wave crests 5 of the lower grid plate 1 in their areas 18 in support engagement come and can be fixed to each other there.
  • the nodes 17 are arranged in areas 18 of the wave crests 5 or wave troughs 6. There, when two or more grid plates 1 are layered one on top of the other, they can be fixed cohesively to the grid web 2 ''',3''''' of the neighboring grid plate 1 that comes into support engagement with them.
  • two central axes 16 of two possible grid plates 1 forming the section of FIG. 12 are marked again.
  • the areas 18 are congruent, so that, according to FIG. 11, when turning a grid plate 1 by rotating about a central axis 16 by 180 °, the areas 18 of the wave crests 5 of the lower grid plate 1 with the areas 18 of the troughs 6 of the upper ones Grid plate 1 come into support engagement and can be firmly bonded to one another.
  • the arcuate lattice webs 2 '' ', 3' '' '' reduce the expansion of the lattice plate 1 when loaded by flattening its wave contour by compressing it by reducing the radius of the arc by bending.
  • the lattice webs 2 '' ', 3' '' '' pass through the wave extremes by opening into one another at the end to form a node 17. Their end point is in each case four lattice webs 2 '' ', 3' '' '' in common and is at the same time the node 17 arranged in an extreme wave.
  • FIG. 13 shows a connection of two grid plates 1 in their mutually opposite regions 18 by means of material locking
  • FIG. 14 shows a fixation by means of positive locking.
  • the wave contour is formed from a trapezoidal polygon whose corner points are arranged in the wave extremes.
  • the webs 2 ''',3''''' of the grid plates 1 are rectilinear and go to the trough 6 in a node 17, which is provided in the center with a conical through hole in the area 18 of the trough 6.
  • the other ends of the lattice webs 3 ''''' also merge into nodes 17 which form an upwardly tapering pin 20 which is arranged in the region 18 of the shaft crests 5.
  • the lower grid plate 1 is rotated by 90 ° with respect to the upper one about a vertical axis 19 (FIG. 12).
  • the pattern of the webs 2 '' ', 3' '' '' is designed so that during this rotation the upstanding conical pins 20 of the areas 18 in the shaft ridges 5 come into support engagement with the through holes of the areas 18 in the wave troughs 6 , wherein the cone of the through holes is formed in two stages.
  • the first area is used for threading the conical pin 20 until its two central axes are aligned.
  • the second area is used for precisely fitting support engagement of both, so that both center when the cushion body is loaded and are wedged into one another, so that a positive engagement is increased by frictional forces.
  • 15 and 16 show a further exemplary embodiment of a grating plate 1 according to the invention with a wave propagation direction but a punctiform design of the wave extremes.
  • the wave maxima are formed by pins 20 ', 20'', the wave minima by conical membranes 21 with a smaller thickness than the lattice webs 2''', 3 ''''', which are provided with a slot 22.
  • the pin 20 ′, 20 ′′ bulges the membrane 21 upward in the region of the slot 22, as a result of which the slot width is increased to the pin thickness and the pin 20 ′, 20 ′′ is taken up by the slot 22 and wedged there becomes.
  • the ring-shaped node 17 of the shaft minimum of the upper grid plate 1 comes to rest on the grid webs 2 ′′ ′′, 3 ′′ ′′ of the lower grid plate 1. Both grid plates 1 are fixed to one another with respect to displacement in the plane of the grid plate.
  • 17 and 18 show two further exemplary embodiments of the wave contours of corrugated profile grid plates 1 according to the invention.
  • wave crests 5 and wave troughs 6, ie the areas of the wave maxima and wave minima, of the corrugated profile grid plate 1 are formed by different wave contours.
  • the wave contour does not form a mathematical function, but partly returns in an S-shape in loops.
  • the wave profile is point-symmetrical to the turning points of the profile center line, whereby wave maxima and wave minima are shaped the same.
  • the thicknesses of the corrugated profile differ on the wavelength in order to compensate for stress peaks and uniform distribution of the deformation work, and the corrugated contours are symmetrical to central axes perpendicular to the central plane of the grid plate.
  • Embodiments according to the invention are also effective, the wave contours of which are not symmetrical to any central axis perpendicular to the central plane of the grid plate. It is also not necessary to repeat the same waves continuously.
  • the wave contour can differ from wave to wave with different amplitudes, different wavelengths, different wall thicknesses or wall thickness profiles and different shapes.
  • the total area of the grid openings 4.4 ', 4' ', 4' '', 4 '' ' and 4 '''''in plan view of the grid plate 1 is approximately 45% to 95% the total area of the grid plate 1.
  • the thickness of the grid webs 2.3; 2 ', 3; 2,3 '; 2.3 ''; 2.3 '''; 2 '', 3 '' ''; 2 ''' ', 3' '''''; 2 '''', 3' ''''' can be approximately 10 to 100% of the wave amplitude of the grid plate 1.
  • a wave amplitude in the range from 5 to 50 mm is preferably considered.
  • grille plates 1 can be provided in a cushion body comprising a plurality of grille plates 1 arranged next to and / or one above the other each of the entire surface of the grating openings 4, 4 ', 4' ', 4' '', 4 '' '', 4 '''''' also differing in terms of their opening area and / or different wavelengths instead of or in addition to the measures described used to change the spring hardness.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Laminated Bodies (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Invalid Beds And Related Equipment (AREA)
EP96104673A 1995-03-25 1996-03-25 Corps flat rembourré Expired - Lifetime EP0734668B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29505064U 1995-03-25
DE29505064U DE29505064U1 (de) 1995-03-25 1995-03-25 Flächiger Polsterkörper

Publications (2)

Publication Number Publication Date
EP0734668A1 true EP0734668A1 (fr) 1996-10-02
EP0734668B1 EP0734668B1 (fr) 2001-01-17

Family

ID=8005863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96104673A Expired - Lifetime EP0734668B1 (fr) 1995-03-25 1996-03-25 Corps flat rembourré

Country Status (4)

Country Link
US (1) US5747140A (fr)
EP (1) EP0734668B1 (fr)
AT (1) ATE198696T1 (fr)
DE (2) DE29505064U1 (fr)

Families Citing this family (82)

* Cited by examiner, † Cited by third party
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US8025964B2 (en) * 1994-06-03 2011-09-27 Tempur World, Llc Laminated visco-elastic support
AT405481B (de) * 1997-12-10 1999-08-25 Franz Ing Kutschi Federkern
DE19828254C2 (de) * 1998-06-25 2000-07-20 Daimler Chrysler Ag Sitz- und/oder Liegevorrichtung, insbesondere Fahr- oder Flugzeugsitz
US6561580B1 (en) * 1999-01-21 2003-05-13 Bergey Karl H Energy-absorbing aircraft seat
AU754545B2 (en) 1999-09-15 2002-11-21 Brentwood Industries, Inc. Contact bodies and method and apparatus of making same
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US5747140A (en) 1998-05-05
DE59606325D1 (de) 2001-02-22
ATE198696T1 (de) 2001-02-15
EP0734668B1 (fr) 2001-01-17
DE29505064U1 (de) 1996-07-25

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