EP2111776A2 - Lit amélioré - Google Patents

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Publication number
EP2111776A2
EP2111776A2 EP09447013A EP09447013A EP2111776A2 EP 2111776 A2 EP2111776 A2 EP 2111776A2 EP 09447013 A EP09447013 A EP 09447013A EP 09447013 A EP09447013 A EP 09447013A EP 2111776 A2 EP2111776 A2 EP 2111776A2
Authority
EP
European Patent Office
Prior art keywords
sound
bed according
improved bed
absorbing material
improved
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.)
Withdrawn
Application number
EP09447013A
Other languages
German (de)
English (en)
Other versions
EP2111776A3 (fr
Inventor
Marc P. Veldeman
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.)
Glocom NV
Original Assignee
Glocom NV
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 Glocom NV filed Critical Glocom NV
Publication of EP2111776A2 publication Critical patent/EP2111776A2/fr
Publication of EP2111776A3 publication Critical patent/EP2111776A3/fr
Withdrawn legal-status Critical Current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
    • A47C19/00—Bedsteads
    • A47C19/02—Parts or details of bedsteads not fully covered in a single one of the following subgroups, e.g. bed rails, post rails
    • A47C19/021—Bedstead frames
    • A47C19/022—Head or foot boards

Definitions

  • the present invention concerns an improved bed.
  • Sounds in the bedroom may disturb the sleep, however, and thus lead to a short or bad sleep.
  • earplugs are disadvantageous, however, in that they can come out of the ears during the sleep, as a result of which the sleeper is nevertheless exposed to ambient noise, and which may lead to unhygienic situations as the earplugs, soiled by earwax, may get lost in the bed or in the room.
  • earplugs plug up the user's auditory duct entirely, so that practically no sound whatsoever can be heard, not even in case of emergency, which may lead to dangerous situations as the user cannot hear an alarm signal for example.
  • the present invention aims to remedy one or several of the above-mentioned and/or other disadvantages.
  • the invention concerns an improved bed having as a specific characteristic that it is at least partly made of a sound-absorbing material and that it is provided with an air cavity working in conjunction with the latter.
  • air cavity is used in the broadest sense, and it also comprises an air slot, a hollow space filled with air, etc., unlike those that are formed for example by the open cells of a sound-absorbing foam filled with air.
  • An advantage of the co-operation between sound-absorbing material and an air cavity is that the sound-damping capacity of a bed according to the invention is strongly increased compared to conventional beds in which only sound-absorbing material of the same thickness is used, without any air cavities.
  • a further advantage is that a bed according to the invention is simple and easy to make, such that its manufacturing price, its energy and material consumption, its environmental impact and its greenhouse effect are considerably reduced.
  • An advantage thereof is that, by providing the bed with one or several parts of sound-absorbing material and an air cavity working in conjunction therewith, the noise nuisance for a person lying in such an improved bed is reduced, leading to a better sleep quality, so that naps and sleeps have a more refreshing effect than in a conventional bed.
  • Another advantage of such an improved bed according to the invention is that it provides a very simple and cheap solution to the existing problems of noise nuisance when sleeping and/or resting.
  • Another advantage of such an improved bed according to the invention is that, since the sound-absorbing material and the air cavity working in conjunction with it are an inherent part of the bed, when the bed is moved to another room, the sound-absorbing system is moved as well in a simple manner.
  • the air cavity is formed of one or several air slots.
  • the air cavity is formed of hollow spaces filled with air.
  • the sound-absorbing material is made of a natural material, such as for example coconut fibre or cork, or pleated felt.
  • the sound-absorbing material is made of a plastic foam with an open cell structure, for example polyether polyurethane, or polyimide, or melamine formaldehyde sodium bisulphite copolymer.
  • the plastic foam is Akomine or Basotect.
  • the plastic foam is a polyether polyurethane, such as for example BMX, with accoustic qualities and a flame spread according to MVSS 302 smaller than 100 mm/min.
  • the plastic foam is free of chlorinated and/or fluorinated components as well as of formaldehyde.
  • At least the sound-absorbing material has fire-resistant or fire-retardant qualities, which are obtained by filling said material or impregnating it with conventional fire-resistant or fire-extinguishing components, or also thanks to the specific composition of said material, for example in the case of polyimide foam.
  • said plastic foam is fibre-free.
  • the sound-absorbing material is selected from materials of the group which, when exposed to high temperatures, have a low smoke development and low toxic gas production, as is for example the case with the polyimide foams as mentioned above.
  • fine non-woven polyester fibres that have been made fire-retardant are used as a sound-absorbing material, for example in the form of "Safe-T-Sound" from the Libeltex company.
  • the sound-absorbing material is composed of different layers which each have different sound-absorbing and/or sound-reverberating qualities and which co-operate with one another so as to cover a sound-absorbing and/or sound-reverberating spectrum that is as large as possible.
  • the part of the bed that is made of a sound-absorbing material is preferably provided at the head and/or at the foot of the bed.
  • Figure 1 shows an improved bed 1 according to the invention which is in this case provided with a bedstead 2 provided with a headboard 4 at the head 3 of the bed 1 extending in height above the part 5 of the bedstead 2 on which can be put a mattress (not represented in the figure).
  • the width B of the headboard 4 is thereby larger than the width b of the bedstead 2 and also higher than the aforesaid part 5, such that the headboard 4 extends on either side and at the top of the bed 1, past the edges of the aforesaid part 5 and the width b of the bedstead 2.
  • the bed 1 is at least partly made of a sound-absorbing material, and it is provided with an air cavity working in conjunction with the latter,(neither of which are represented in figure 1 , but which are represented in detail in figure 2 ), whereby said part is preferably provided at the head 3 of the bed 1.
  • the headboard 4 is in this case at least partly made of a sound-absorbing material 6 and provided with an air cavity 7, in the form of air slots, working in conjunction with the latter.
  • the headboard 4 represented in figure 1 is in this case provided with a layer of parallel strips of felt 8 with the air cavity 7 in between, this time in the shape of air slots, whereby sound waves 9 hitting the headboard 4 are partly absorbed and are partly reverberated in different directions between the strips 8, as a result of which a considerable sound damping is obtained at the head 3 of the bed 1.
  • a person lying in an improved bed 1 according to the invention will sleep better than in conventional beds which are not provided with a sound-absorbing part, since the noise level will be more than one decibel lower, preferably even less than three decibels lower and better still at least six decibels lower than in conventional beds by adding said sound-absorbing material 6 and an air cavity 7 working in conjunction with the latter.
  • Figure 3 shows a variant of a bed 1 according to figure 2 , whereby the aforesaid sound-damping material 6 in this case consists of an acoustic foam in the form of a layer 10 with an open cell structure, which foam layer 10 is in this case, but not necessarily, coated with a sound-permeable fabric 11.
  • Sound waves 9 can move through the sound-permeable fabric 11 and are then absorbed in the foam layer 10, such that a first sound damping is obtained.
  • Figures 4 and 5 represent a variant of a bed 1 according to the invention, whereby the headboard 4 is provided with at least one crosswise directed part 12 situated next to (see figure 4 ) or above (see figure 5 ) the head 3 of the bedstead 2 and which is at least partly made of a sound-absorbing material working in conjunction with an air cavity.
  • the bed 1 is moreover provided with a footboard 13 at the foot 14 of the bed 1.
  • the crosswise directed part 12 of the bed 1 is made as an overhanging part above the head 3.
  • figure 6 shows another variant of an improved bed 1 according to the invention, in which the bed 1 is made as a four-poster bed 15, whereby the canopy 16, situated above the part 5, is at least partly made of a sound-absorbing material (not represented) and is provided with an air cavity (not represented) working in conjunction with the latter.
  • the bed 1 is made as a four-poster bed 15, whereby the canopy 16, situated above the part 5, is at least partly made of a sound-absorbing material (not represented) and is provided with an air cavity (not represented) working in conjunction with the latter.
  • Figure 7 schematically shows a practical embodiment of the invention, for example applied to a headboard (see 4 in figure 1 ) or to a footboard (see 13 in figure 4 ).
  • the headboard 4 or footboard 13 is hereby built of a wooden frame 17, sealed on the back by means of a rear panel 18, for example formed of a fibre board with an average density.
  • a centre panel 19 for example formed of a perforated fibreboard with an average density.
  • This centre panel divides the frame 17 in two parts, whereby the rear panel 18 and the centre panel 19 enclose a hollow space forming the actual air cavity 7 (not represented).
  • a sound-absorbing foam 20 Above the centre panel 19, inside the frame 17, is provided a sound-absorbing foam 20.
  • This construction makes it possible to efficiently absorb and dampen the sound waves represented by 9.
  • Figure 8 schematically represents a variant of the embodiment represented in figure 7 , seen in perspective.
  • This construction not only makes it possible to efficiently absorb and dampen the sound waves represented by 9, but also to provide an adapted and aesthetic design to the sound-absorbing part of the bed 1 according to the invention, as well as to provide for external protection.
  • Figure 9 schematically represents a preferred, practical embodiment of a bedstead 2 made according to the invention, seen in perspective.
  • a sound-absorbing foam layer 20 On top of the perforated centre panel 19 is provided a sound-absorbing foam layer 20, in turn covered by a second perforated intermediate panel 23, which in principle has the same shape as the first centre panel 19 and is made of the same material, namely fibreboard with an average density.
  • the springs 24 are provided which are insulated in relation to one another by air cavities 7 and which also have a hollow structure on the inside filled with air which also functions as an additional air cavity (not represented in detail).
  • the whole is covered with a second foam layer 27, and further surrounded by a sound-absorbing foam layer 21 which envelopes the whole, together with a sound-permeable fabric 11 which has a more protective and decorative function.
  • Such a construction not only makes it possible to efficiently absorb and dampen sound waves, but also to provide the sound-absorbing part of the bed 1 according to the invention with an adapted shape and with external protection.
  • Figure 10 schematically shows a bottom view of the bedstead 2 represented in figure 9 , seen in perspective.
  • Figure 11 represents a more detailed section of a sound-absorbing part of a bed 1 according to the invention.
  • a wooden frame 17 is covered at the bottom by a rear panel 18 which is made for example of fibreboard with an average density.
  • a perforated centre panel 19 is provided in the frame 17 over the entire surface on which rests a sound-absorbing foam 20.
  • the latter foam 20 is in turn covered with a sound-absorbing foam layer 21 and a sound-permeable fabric layer 11 enveloping the front of the sound-absorbing structure on the outside, such that, apart from an efficient sound absorption also an aesthetic design and protection are obtained.
  • Figure 12 schematically represents a cross section according to line XII-XII in figure 8 of a sound-absorbing part of a bed 1 according to the invention so as to better illustrate the sound-absorbing principle of a sound-absorbing part of a bed 1 according to the invention which makes use of a sound-absorbing material 20 and an air cavity 7.
  • a second air cavity 25 is formed between the surrounding sound-permeable fabric 11 and the bottom plate 18.
  • the sound waves are partly absorbed here and their energy is transformed into heat.
  • This air cavity 7, together with the rear panel 18, provides for a further absorption of the remaining sound waves.
  • the air cavity 7 is extremely well fit for absorbing sound waves 9 with a low frequency.
  • a part of the sound waves 9 which hit the rear panel 18 are reverberated back into the sound-absorbing foam 20, whereby also these reverberated sound waves are efficiently absorbed in the sound-absorbing foam 20.
  • the sound-absorbing material that can be used is not restricted to the use of felt or an accoustic foam with an open cell structure according to the invention, but, as mentioned above, any material whatsoever or a composition of any material whatsoever having sound-absorbing qualities and thereby co-operating with an air cavity can be used according to the invention.

Landscapes

  • Finger-Pressure Massage (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
EP09447013A 2008-04-25 2009-04-23 Lit amélioré Withdrawn EP2111776A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2008/0248A BE1018110A3 (nl) 2008-04-25 2008-04-25 Verbeterd bed.

Publications (2)

Publication Number Publication Date
EP2111776A2 true EP2111776A2 (fr) 2009-10-28
EP2111776A3 EP2111776A3 (fr) 2012-04-25

Family

ID=39882826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09447013A Withdrawn EP2111776A3 (fr) 2008-04-25 2009-04-23 Lit amélioré

Country Status (2)

Country Link
EP (1) EP2111776A3 (fr)
BE (1) BE1018110A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023129494A3 (fr) * 2021-12-30 2023-08-10 Sleep Number Corporation Système de réduction et de suppression de bruit de lits

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2375941A (en) * 1943-03-06 1945-05-15 Eugene S Nostrand Sound reducing device for beds
GB828172A (en) * 1957-06-15 1960-02-17 Slumberland Ltd Improvements in or relating to head-boards for divans and other beds
FR2330358A1 (fr) * 1975-11-07 1977-06-03 Champeau Andre Lit a isolation acoustique
DE2832262A1 (de) * 1978-07-22 1980-02-07 Heinz Hoelter Krankenhausbett mit randschlitzabsaugung gegen gerueche und desinfektion der umgebungsluft
DE19821658A1 (de) * 1998-05-14 1999-11-25 Karl Merk Schnarch-Lärm-Schutzvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023129494A3 (fr) * 2021-12-30 2023-08-10 Sleep Number Corporation Système de réduction et de suppression de bruit de lits

Also Published As

Publication number Publication date
BE1018110A3 (nl) 2010-05-04
EP2111776A3 (fr) 2012-04-25

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