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
  • A47C23/064—Slat supports by elastic means, e.g. coil springs by elastomeric 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
  • A47C23/002—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

Definitions

• the invention relates to the field of the elastic suspension of bed bases, which are intended to support a bed, such as a mattress for example.
• a monobloc suspension device for a bed base comprising:
• each of the outer suspension walls having at least one mean curved line extending in the second plane of symmetry, each of the outer suspension walls being adapted to bend along at least one fold line substantially orthogonal to the second plane of symmetry.
• such a device can be attached directly to a long side of a frame of the bed base, or be mounted on a lath fixing, the latter then being fixed to the long pan of the bed.
• An object of the invention is to provide a suspension device having improved suspension quality.
• the suspension elements of the suspension device further comprise at least one pair of inner elastic suspension walls symmetrical with respect to the first plane of symmetry, each of the inner suspension walls having at least one mean curve line extending into the second plane of symmetry, each of the inner suspension walls being adapted to bend according to at least three distinct fold lines substantially orthogonal to the second plane of symmetry.
• the inner suspension walls are split into at least four parts which tend to stack on top of each other when the suspension device is subjected to a vertical load.
• vertical is meant here a direction substantially parallel to the line defined by the intersection of the first and second planes of symmetry.
• the stiffness of the inner suspension portions increases as said parts stack on top of each other.
• the outer suspension walls with fewer fold lines, have a stiffness that changes less than that of the internal suspension portions.
• the interaction during folding between the inner and outer suspension portions results in a mechanical coupling of the stiffness of said portions, as a result of which the overall stiffness of the elements suspension of the device has a vertical progressivity providing the user with improved comfort.
• the internal suspension walls are arranged in a volume defined by the external suspension walls.
• the external suspension walls are able to bear on the internal suspension walls when a load is applied to the device according to the invention.
• each of the external suspension walls comprises at least one bent portion defining the fold line of said wall.
• each of the outer suspension walls is able to bend around the bent portion.
• each of the external suspension walls comprises a single bent portion.
• the outer suspension walls may also have a shape substantially curved like a "C", the fold line then passing substantially through the middle of the wall.
• each of the outer suspension portions is disposed substantially midway between the lower and upper parts of the suspension device according to the invention.
• each of the internal suspension walls comprises at least three bent portions defining the fold lines.
• at least one of the bent portions opens to an intersection of the first and second planes of symmetry, while at least one of the other bent portions opens to the nearest outer suspension wall .
• each of the inner suspension walls advantageously comprises successively first, second and third bent portions, so that two adjacent bent portions open towards opposite directions, whereby the internal suspension portions can fold or stack on themselves.
• the inner suspension walls preferably have substantially the shape of a " ⁇ " consisting of three bent portions juxtaposed.
• each of the bent portions comprises two arms which are advantageously able to stack one on the other when the suspension device is subjected to a vertical load.
• each of the inner suspension walls has a first end fixed to the upper part of the device and a second end attached to the lower part of the device while the first, second and third portions bends of said inner suspension wall respectively define first, second and third fold lines, and, considered in the second plane of symmetry, the suspension device being at rest, the distance between the first end of the inner suspension wall and the second fold line is substantially equal to twice the distance between the second fold line and the second end of the inner suspension wall.
• the arms of the third bent portion tend to stack one on the other before the arms of the first bent portion do not stack in turn one on the other, whereby the inner suspension wall has a progressive stiffness when folding the suspension device.
• the first bent portion is closest to the first end of said inner suspension wall, and the first and third bent portions open to an intersection of the first and second planes of symmetry, while the second bent portion s' open to the nearest outer suspension wall.
• the width of the internal suspension walls is substantially equal to the width of the external suspension walls.
• transverse direction here means a direction orthogonal to the second plane of symmetry.
• the device according to the invention has a reduced transverse bulk.
• the first bent portion is closest to the first end of the inner suspension portion, and the second bent portion opens to an intersection of the first and second planes of symmetry, while the first and third bent portions open to the nearest outer suspension wall.
• the inner suspension walls are fixed together along their first and third fold lines.
• This provides a mechanical coupling between the inner suspension walls, an interest of which is to improve the strength of the suspension elements.
• the internal suspension walls are fixed together by means of a flexible sleeve extending in a direction orthogonal to the second plane of symmetry.
• This sleeve advantageously distributes the forces experienced by the suspension elements in the inner suspension walls.
• At least one of the internal suspension walls is connected to one of the external suspension walls via least one tube wall.
• the tube wall preferably elastically deformable, makes it possible to elastically couple said inner suspension wall and said external suspension wall, so as to distribute the forces experienced by the suspension device in the internal and external suspension walls, but also to absorb some of the forces experienced by said device.
• the tube wall is attached to the inner suspension wall along the second fold line, and is attached to the outer suspension wall along the fold line of said outer suspension wall.
• the suspension device has a better reactivity vis-à-vis a variation in the intensity of the vertical load applied to it.
• the suspension elements are inscribed in a spherical volume.
• the suspension elements have a honeycomb structure.
• the suspension device according to the invention is lightweight while being particularly strong. Also, thanks to this particular geometry, the forces experienced by the suspension device are distributed homogeneously in the various suspension walls of the device.
• the lower part comprises at least one sleeve for attachment to a tenon integral with a frame of the bed.
• the lower part further comprises an additional housing for receiving the end of a lower batten.
• the device according to the invention further comprises a support plate for a mattress attached to the upper part.
• the support plate comprises a pair of gills for aeration of the coating.
• the support plate also has a vertical elasticity improving the comfort of sleeping.
• the device according to the invention further comprises a lath housing housing fixed to the upper part of the device, so as to accommodate the lath ends extending in a direction substantially orthogonal to the second plane of symmetry.
• FIG. 1 shows a first embodiment of the suspension device according to the invention, shown in front view, the device comprising housing housing for slats;
• FIG. 2 is a perspective view of the suspension device of FIG. 1;
• FIG. 3 is a side view of the suspension device of FIG. 1;
• FIG. 4 shows a second embodiment of the suspension device according to the invention, shown in front view, the upper part of the device comprising a support plate for supporting a mattress;
• FIG. 5 is a side view of the suspension device of FIG. 4 without the support plate;
• FIG. 6 is a perspective view of the suspension device of Figure 4 comprising a plate
• FIG. 7 is a perspective view of a variant of the second embodiment of the suspension device of Figure 6 where the support plate is replaced by a slatted housing housing;
• FIG. 8 is a front view of a third embodiment of the suspension device according to the invention, adapted to be provided with a support plate or housing housing for slats;
• FIG. 9 is a perspective view of the suspension device of FIG. 8;
• FIG. 10 is a perspective view of the suspension device of Figure 8 provided with the support plate.
• Figures 1 to 3 we will first describe a first embodiment of a monobloc suspension device 10 according to the present invention.
• the suspension device 10 shown in FIGS. 1 to 3 is a slat mouthpiece which is intended to be attached to a long slab of a slatted bed frame (not shown here).
• the suspension device 10 has an upper portion 12 for supporting a coating.
• the suspension device 10 is provided with a housing for slats 14 comprising two housings 16, 18 adapted to receive the ends of two slats (not shown here).
• a longitudinal direction DL of the suspension device is defined to be that perpendicular to the first plane of symmetry P1, the longitudinal direction DL being parallel to the direction of the long pan when the hanger device is attached thereto.
• a transverse direction DT of the suspension device 10 is also defined as that perpendicular to the second plane of symmetry P2, the transverse direction DT being parallel to the direction of insertion of the slats in the housing of the housing 14.
• the longitudinal direction DL is obviously orthogonal to the transverse direction DT.
• the housing housing 14 can also provide the suspension device 10 of a support plate for supporting a coating, such as a mattress.
• a support plate for supporting a coating, such as a mattress.
• the suspension device 10 further comprises a lower portion 20 intended to be fixed to the bed base, preferably but not necessarily to tenons fixed to the long pan of the bed frame.
• the lower portion 20 is provided with anchoring means consisting of a pair of sleeves 24, 26 for attachment to the tenons.
• the lower portion 20 further comprises an additional housing 27 for a third slat (not shown here).
• the suspension device 10 further comprises an intermediate portion 28 constituted by suspension elements having a first plane of symmetry P1 and a second plane of symmetry P2, the plane of symmetry P1, P2 being orthogonal.
• the suspension members 30 comprise a pair of outer resilient suspension walls 32, 34 which are substantially symmetrical with respect to the first plane of symmetry P1.
• each of the external suspension walls 32, 34 has an average curved line C extending in the second plane of symmetry.
• each of the outer suspension walls 32,34 has a first end 32a, 34a fixed to the upper part 12, and a second end 32b, 34b attached to the lower part 20. Moreover, each of the external suspension walls 32,34 is able to bend, when a substantially vertical load is applied to the suspension device, along a fold line L1, L2 substantially orthogonal to the second plane of symmetry P2.
• each of the external suspension walls 32, 34 has a bent portion 36, 38 defining the corresponding fold line L1, L2.
• the bent portions 36 and 38 open towards an intersection A of the first and second planes of symmetries P1, P2.
• the fold line L1, L2 of each of the outer suspension walls 32, 34 is situated substantially midway between the lower and upper parts 12 of the device 10.
• each of the angled portions 36, 38 comprises a pair of arms 36a, 36b, 38a, 38b, which are interconnected by one of their ends on the one hand, and the lower and upper parts 20 of the suspension device 10 on the other hand.
• the suspension members 30 of the suspension device 10 further comprises a pair of internal elastic suspension walls 40, 42, which are symmetrical with respect to the first plane of symmetry P1. With the aid of FIG. 2, it is conceivable that the first and second internal suspension walls 40,42 of said pair are disposed in a volume defined by the external suspension walls 32,34.
• the width of the inner suspension walls 40,42 is substantially equal to the width of the outer suspension walls 32,34.
• each of the internal suspension walls 40, 42 has a first end 40a, 42a fixed to the upper part 12, and a second end 40b, 42b fixed to the lower part 20.
• the second ends 40b, 42b are interconnected by a flexible membrane 41 extending in a longitudinal direction of the device 10.
• the first ends 32a, 34a of the external suspension walls 32, 34 coincide with the first ends 40a, 42a of the internal suspension walls 40, 42, whereby the external suspension walls 32 , 34 can vertically push the inner suspension walls 40,42 when the suspension device is vertically loaded.
• Each of the inner suspension walls 40, 42 has at least one mean curved line extending in the second plane of symmetry P2.
• the average curved line of the inner suspension wall 40 has substantially the shape of a " ⁇ ".
• each of the internal suspension walls 40, 42 is capable of folding along three distinct fold lines M1, M2 and M3, which are substantially orthogonal to the second plane of symmetry P2.
• each of the internal suspension walls 40,42 considered vertically from the upper part 12 to the lower part 20, comprises successively first, second and third bent portions referenced 401,402 and 403 (for the first internal suspension wall 40 ) on the one hand, and 421,422 and 423 (for the second inner suspension wall 42) on the other hand, bent portions respectively defining the first, second and third fold lines M1, M2, M3 on the one hand, and the first, second and third fold lines N1, N2 and N3 on the other hand.
• the first and third bent portions 401, 403, 421, 423 open towards the intersection A of the first and second plane of symmetry P1, P2, while the second angled portion 402, 422 opens to an opposite direction, namely to the outer suspension wall closest to said inner wall.
• the first bent portion 401,421 has two arms respectively referenced 401a, 401b and 421a, 421b which are substantially the same length, this length being considered in the second plane of symmetry P2.
• the second bent portion 402 of the first inner suspension wall 40 has a pair of arms 402a, 402b while the third bent portion 403 has a pair of arms 403a, 403b.
• the second bent portion 422 of the second inner suspension wall 42 includes a pair of arms 422a, 422b, while the third bent portion 423 includes a pair of arms 423a, 423b.
• the arms 401b and 402a are identical, as are the arms 403a and 402b, 421b and 422a, as well as 423a and 422b.
• the distance D between the first end 40a of the inner suspension wall 40 and the second fold line M 2 is substantially equal to twice the distance d measured between the second fold line M 2 and the second end 40b of the inner suspension wall 40 this distance ratio contributes to the progressiveness of the stiffness as it is already mentioned above.
• the inner and outer suspension walls fold along their fold lines. respective ones so that the upper part 12 tends to approach the lower part 20.
• the arms 36a and 38a of the outer suspension portions 36, 38 tend the arms 401a, 421a of the first bent portions 401,421, thereby creating a mechanical coupling between the inner and outer suspension portions.
• the arms 401a, 401b, 421a, 421b of the first bent portions 401, 421 tend to stack one on top of the other, which has the consequence of gradually increasing the overall stiffness of the suspension device. 10.
• the suspension elements 30 have a progressive stiffness in a vertical direction.
• the suspension device 100 is intended to be fixed to a flexible lath of the bed base to support a bedding, such as a mattress.
• the suspension device 100 has an upper portion 120 for supporting a coating (not shown here).
• the suspension device 100 is provided with a support plate 140 to support the coating.
• the suspension device 100 instead of the support plate 140, it is also possible to provide the suspension device 100 with a slatted housing as described in the first embodiment of the invention, such a configuration being shown in FIG. 7.
• the suspension device 100 further comprises a lower portion 200 intended to be fixed preferably to a flexible lath.
• the lower part comprises in particular a fixing hook 210, better visible in FIG.
• the suspension device 100 further comprises an intermediate portion 280 constituted by suspension elements 300 having a first plane of symmetry Q1 and a second plane of symmetry Q2, the symmetry planes Q1, Q2 being orthogonal.
• the suspension members 300 comprise a pair of external resilient suspension walls 320, 340 which are substantially symmetrical with respect to the first plane of symmetry Q1.
• each of the external suspension walls 320, 340 has a mean C-shaped curved line extending in the second plane of symmetry Q2.
• each of the outer suspension walls 320, 340 has a first end 320a, 340a attached to the upper part 120, and a second end 320b, 340b fixed to the lower part 200.
• each of the external suspension walls 320, 340 is bendable along a fold line L1, L2 substantially orthogonal to the second plane of symmetry Q2.
• the fold line L1, L2 of each of the external suspension walls 320, 340 is disposed halfway between the lower 200 and upper 120 parts of the suspension device 100.
• the 300 of the suspension device 100 further comprises at least first and second inner elastic suspension walls 500, 520 which are substantially symmetrical with respect to the first plane of symmetry Ql.
• the first elastic suspension wall 500 has a first end 500a connected to the upper part 120 of the suspension device 100 and a second end 500b connected to its lower part 200.
• the second suspension wall 520 has a first end 520a. connected to the upper part 120 and a second end connected to the lower part 200.
• each of the inner suspension walls 500, 520 has at least one curved line extending in the second plane of symmetry Q2.
• each of the internal suspension walls 500, 520 considered vertically from the upper part 120 to the lower part 200, comprises successively first, second and third bent portions referenced 501, 502 and 503 for the inner suspension wall 500, and 521, 522 and 523 for the inner suspension wall 520, said bent portions respectively defining the first, second and third fold lines T1, T2, T3 on the one hand, and the first, second and third folding lines U1, U2, U3 of somewhere else.
• the first and third bent portions 50 1, 503, 521, 523 open towards the outer suspension wall closest to said inner wall, while the second bent portion 502, 522 s' opens towards an opposite direction, namely towards an intersection B of the first and second symmetry planes Q1 and Q2.
• the internal suspension walls 500, 520 are fixed together along their first T1, U1 and third T3, U3 fold lines.
• each of the inner suspension walls 500, 520 is connected to the nearest external suspension wall via a tube wall 540, 560 extending in a direction orthogonal to the second plane of symmetry.
• each tube wall 540, 560 is attached to the inner suspension wall 500, 520 along the second fold line T2, U2, and is attached to the corresponding outer suspension wall 320, 340 along the fold line of said wall.
• external suspension 320,340 is attached to the inner suspension wall 500, 520 along the second fold line T2, U2, and is attached to the corresponding outer suspension wall 320, 340 along the fold line of said wall.
• suspension elements 300 advantageously have a honeycomb structure.
• suspension elements 300 are inscribed in a spherical volume.
• FIG. 6 shows the suspension device 100 equipped with the support plate 140
• FIG. 7 shows the suspension device 100 equipped with the slatted housing 700
• the support plate 140 has a quadrangular shape. It comprises two opposite longitudinal lateral edges 142, 144 raised as well as two opposite transverse edges 146, 148, also raised with respect to a central portion 150 having a circular orifice in which is fixed the upper part 120 of the suspension device.
• the support plate 140 also has a pair of louvers 152,154 for aeration of the mattress.
• the side edges 146, 148 because of the presence of the gills, advantageously have a vertical elasticity which further improves the flexibility of the suspension device 100 according to the invention.
• This suspension device 1000 is similar to that of the second embodiment except for the structure of the inner suspension walls. It will therefore be attempted to describe the internal suspension walls 1100, 1200 of the suspension device 1000. For the rest, it is necessary to refer to the description of the second embodiment above.
• the internal elastic suspension walls 1100, 1200 are symmetrical with respect to a first plane of symmetry R1 of the suspension elements 1050 of the device 1000, each of the internal suspension walls 1100, 1200 having a mean curve line extending in a second plane of symmetry R2 of the suspension elements 1050 of the device 1000.
• the symmetry planes R1 and R2 are orthogonal.
• the inner suspension wall 1100 is able to bend along three distinct fold lines V1, V2, V3, while the other inner suspension wall 1200 is able to bend along three fold lines.
• the inner walls are not connected to the outer suspension walls 1300, 1400 by a tube wall.
• the internal suspension walls are fixed together by means of a flexible sleeve 1500 extending in a direction orthogonal to the second plane of symmetry.
• This flexible sleeve 1500 makes it possible to mechanically couple the internal suspension walls 1100, 1200 so that the forces experienced by the device 1000 when a vertical load is applied are advantageously distributed in the cylindrical structure of the sleeve 1500.
• the suspension device 10,100,1000 is monobloc. Preferably, but not exclusively, it is molded in one piece and preferably made of a flexible material of vulcanized rubber, flexible polyurethane, thermoplastic rubber of hardness preferably between 25 Shore A and 70 Shore D.
• the support plate and the housing of the housing are structurally distinct elements of the suspension device, whereby it is possible to interchange them.
• the progressivity of the stiffness of the suspension device can be further improved by providing an increasing thickness of the inner and / or outer suspension walls, it being understood that the growth of the thickness is considered from the top to the bottom. of the suspension device according to the invention.
• Figure 1 shows that the arms 403a, 403b, 423a, 423b of the third bent portions 403,423 of the first and second suspension walls 40,42 are thicker than the arms 401a, 401b, 421a, 421b of the first bent portions 401,421.
• the arm closest to the upper portion 12 of the suspension device is thicker than the arm closest to the lower portion 20.

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• Mattresses And Other Support Structures For Chairs And Beds (AREA)

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Citations (5)

• 2007
  • 2007-05-04 FR FR0754885A patent/FR2915661B1/fr active Active
• 2008
  • 2008-04-30 EP EP08805731.0A patent/EP2146603B1/de active Active
  • 2008-04-30 WO PCT/FR2008/050777 patent/WO2008148982A1/fr active Application Filing
  • 2008-04-30 ES ES08805731.0T patent/ES2632921T3/es active Active

Patent Citations (5)

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