EP2336477B1 - Méthode de reduction de bruit par utilisation d'une armoire - Google Patents

Méthode de reduction de bruit par utilisation d'une armoire Download PDF

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Publication number
EP2336477B1
EP2336477B1 EP11002772.9A EP11002772A EP2336477B1 EP 2336477 B1 EP2336477 B1 EP 2336477B1 EP 11002772 A EP11002772 A EP 11002772A EP 2336477 B1 EP2336477 B1 EP 2336477B1
Authority
EP
European Patent Office
Prior art keywords
profile
openings
profile body
sound
another
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.)
Active
Application number
EP11002772.9A
Other languages
German (de)
English (en)
Other versions
EP2336477A3 (fr
EP2336477A2 (fr
Inventor
Klaus Griesshammer
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.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
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
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Application filed by Rehau AG and Co filed Critical Rehau AG and Co
Publication of EP2336477A2 publication Critical patent/EP2336477A2/fr
Publication of EP2336477A3 publication Critical patent/EP2336477A3/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/115—Roller shutters specially adapted for furniture
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/15—Roller shutters with closing members formed of slats or the like
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/17—Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
    • E06B2009/17069—Insulation

Definitions

  • the invention relates to a method for noise reduction in offices using a cabinet furniture with a furniture body and at least one front blind, which consists of mutually parallel, interconnected profile elements and is guided in arranged on the furniture body guide grooves.
  • Such cabinet furniture are already known from the prior art.
  • cabinet furniture in which profile elements for forming a shutter with each adjacent profile elements are pivotally connected and which are provided for opening or closing this cabinet furniture.
  • the arranged in various types of profile elements in cabinet furniture shutters or front blinds cause when opening and closing due to the material itself noises.
  • a disadvantage of these cabinet furniture from the prior art is seen that, especially when used in, for example, open-plan offices with a high level of noise, the use of this cabinet furniture to distribute the sound level causing sound, as this on the surface of the cabinet furniture and especially the front blinds is reflected back.
  • the resulting background noise, especially in larger offices is not conducive to the understanding and working environment of the employees working there.
  • a cabinet furniture with a furniture body and a front blind, the profile elements parallel to each other, here called lamellae, and is guided in arranged on the end faces in the walls of the furniture body guide grooves.
  • This cabinet furniture should be designed so that the blind can have comparatively high profile elements. This is to be achieved by the fact that the profile elements are connected at their end faces with linking links, pointing on their side facing the center of the front blinds connecting areas with the profile elements and each pointing to the outside to the walls Have sides in the guide grooves engaging pivot pins which are connected via pivot eyelets with the respective adjacent linking member.
  • a disadvantage of this cabinet furniture is seen that a sound amplifying effect is achieved by the geometry and the material used of the profile elements of the front blind, since the resulting example in office space sound is reflected back over a large area.
  • the US 5 255 970 A discloses a cabinet furniture with a shutter in which are provided for weight saving and thus to facilitate opening and closing operations recesses.
  • the FR 1 128 688 A shows an apertured Venetian blind, which serve to ventilate a lockable cabinet with the blind.
  • the DE 203 08 240 U1 discloses a composite of individual profiles sound-absorbing front blind in which one or more fleece (s) is introduced into the individual profiles to achieve the desired sound-absorbing effect.
  • the profiles have a comparatively complex structure.
  • the DE 203 08 239 U1 discloses a method having the features of the preamble of claim 1.
  • the object of the invention has been found to improve the disadvantages of the known prior art and show cabinet furniture that can be produced economically and inexpensively.
  • spaced-apart openings are introduced both in the first and in the second profile body.
  • This solution is simple and has the advantage that the sound can penetrate through the openings in the profile bodies of the profile element in the cabinet furniture and spread there.
  • the sound is at least partially absorbed in the cupboard furniture.
  • the reflected back from the cabinet furniture sound is now at least partially reflected back from the profile elements of the front blinds in the cabinet furniture, so that only a very small proportion of the sound is reflected back into the room.
  • the width of the openings is less than one third of the width of the front of the profile body.
  • a size of the surface of all openings of the profile body of the profile element of less than 45% or more than 3% of the surface of the front of the profile body of the profile element leads to dimensionally stable profile elements or front blinds, which depending on the size of have generating surface optimized sound absorption effects.
  • a plurality of spaced-apart openings are provided in the longitudinal direction of the profile body. It has proven to be advantageous that the openings are regularly spaced apart, whereby on the one hand the design of the front blinds formed by the profile elements can be designed according to customer requirements, while on the other hand a simultaneously optimized sound absorption effect is present.
  • the distance of the openings in the longitudinal direction of the profile body is greater than twice the extent of the openings seen in the cross section of the profile body.
  • first profile body or the second profile body of the profile element consist of an open-celled foamed material with densities of about 0.4 to 1.2 g / cm 3 and even act as a soundproofing element.
  • the cabinet furniture with the existing of the profile elements front blinds a sound absorption level according to EN ISO 354 of at least 0.4.
  • the sound absorption coefficient represents the ratio of the equivalent sound absorption surface of a test object to the surface of the test object.
  • the surface of the test object in this case the cabinet furniture according to the invention, is the surface of the floor or the wall which is covered by it.
  • the equivalent sound absorption area of the test object is determined from the difference between the equivalent sound absorption area of the reverberation room (the office room) with and without the test object (cabinet furniture).
  • the equivalent sound absorption area of a room is defined as the hypothetical size of a fully absorbing surface without diffraction effects, which would give the same reverberation time in a room as if it were the only absorbing element in space.
  • the proportion of sound power absorbed at a surface depends on the angle of incidence of the sound.
  • the knowledge of the sound absorbing properties of the surface usually in the form of a suitable average over all Angle of incidence required.
  • EN ISO 354 describes a reverberation chamber method for measuring the sound absorption coefficient of acoustic materials used in the cladding of walls and walls Ceilings are used or the equivalent sound absorption surface of individual objects, such as cabinet furniture.
  • the determined sound absorption coefficient can be used for comparison purposes and for design calculations in room acoustics and especially in noise abatement.
  • the cabinet furniture according to the invention it is surprisingly possible to reduce the sound in, for example, office space so that an audible reduction in the general noise level for each recognizable or audible.
  • FIG. 1 an inventive cabinet is shown having a furniture body in a known manner with two side walls 2, 3, a bottom 5 and a topsoil 4.
  • the front blind 1 from right to left, so horizontally movable.
  • a guide groove 20 is introduced, in which the front blind 1 is movable.
  • Another guide groove 20 is incorporated in the topsoil 4, but this is not visible in the illustration.
  • the front blind 1 of the cabinet furniture according to the invention is formed from a plurality of interconnected profile elements 10.
  • the profile elements 10 of the front blind 1 of the cabinet furniture according to the invention have on their visible side openings 40 which are regularly spaced from each other.
  • Fig. 2 shows a perspective view of a not belonging to the invention embodiment of a front blind 1 of a cabinet furniture.
  • the profile elements 10 of the front blind 1 have an approximately U-shaped cross section, which is formed in a defined wall thickness by the first profile body 11.
  • a second profile body 8, which is connected to the profile body 11, is arranged approximately parallel to the first profile body 11.
  • the profile element 10 may for example consist of a thermoplastically processable material and be prepared by extrusion or coextrusion in a known manner.
  • the profile element 10 made of a metallic material, such as aluminum, or produce a thermosetting processable material.
  • openings 40 are introduced, which are formed angular in this embodiment.
  • the openings 40 are round, oval, polygonal or trapezoidal.
  • the second profile body 8 of the profile element 10 no openings are introduced in this embodiment.
  • the second profile body 8 is integrally connected to the first profile body 11.
  • the sum of the total area of the openings 40 relative to the surface of the first profile body 11 of the profile element 10 in this embodiment is about 17%, which leads to optimized sound absorption effects of the cabinet furniture according to the invention.
  • the profile element 10 has on its longitudinal sides via connecting means 6, 7, via the several profile elements 10, brought into operative connection, a corresponding front blind 1 result.
  • the connecting means 6 is in this embodiment, a cross-sectionally approximately C-shaped opening which extends over the entire length of the profile element 10.
  • the connecting element 7 is in this embodiment, an approximately circular in cross-section formed element 72, which is connected via a band-shaped element 71 with the longitudinal side of the first profile body 11 of the profile element 10.
  • the band-shaped element 71 of the connecting means 7 is made in this embodiment of a softer material than the element 72, so that in the interconnected interconnected connecting means 6, 7, the profile elements 10 are hinged together in the front blind 1.
  • a front blind 1 is formed.
  • This front blinds 1 can be performed in a known manner in lateral guide rails 20 of cabinet furniture and are guided or wound over a example curved rail or a role in the cabinet furniture.
  • the front side of the first profile body 11 of the profile element 10 faces the interior of the office space.
  • the sound entering the profile element 10 via the openings 40 is reflected back on the second profile body 8 and impinges on the walls arranged between the openings 40 of the first profile body 11.
  • the sound is reflected back to the first profile body 8 of the profile element 10 and thus occurs greatly attenuated from the interior of the profile element 10 back into the office space.
  • cabinet furniture in, for example, offices, an improvement in the working environment can be achieved by reducing the noise level of the room itself.
  • Such cabinet furniture according to the invention has a sound absorption coefficient of about 0.7.
  • Fig. 3 is a perspective view of an embodiment of a front blind 1 of a cabinet furniture according to the invention shown.
  • the profile element 10 of the front blind 1 is formed as a hollow profile, which is formed by a first profile body 11 and a second profile body 8 connected to it, between which a cavity is formed.
  • openings 40 are introduced, which are round in this embodiment and arranged at equal intervals from each other.
  • the distance of the openings 40 is greater than the extent of the opening 40 in the longitudinal direction of the first profile body 11.
  • the second profile body 8 is arranged approximately semicircular in this embodiment and has openings 40 which are formed angular.
  • the sum of the total area of the openings 40 with respect to the surface of the first profile body 11 of the profile element 10 in this embodiment is about 15%, which leads to optimized sound absorption effects of the cabinet furniture according to the invention.
  • the profile element 10 has on its longitudinal sides via connecting means 6, 7, via the several profile elements 10, brought into operative connection, a corresponding front blind 1 result.
  • the front blind 1 formed from the profile elements 10 is guided in a known manner, for example in vertical guide rails 20 of cabinet furniture.
  • the front side 2 of the first profile body 11 of the profile element 10 faces the interior.
  • the sound from the interior now passes through the openings 40 of the first profile body 11 of the profile element 10 in the cavity between the first profile body 11 and the second profile body 8.
  • the sound is reflected back to the wall of the first profile body 11, which between the openings 40 is arranged.
  • the sound is next guided through the openings 40 of the second profile body 8 in the interior of the cabinet furniture and further absorbed by the stored therein objects, but also by the furniture body itself, and reflected back.
  • Fig. 4 is a perspective view of an also not belonging to invention embodiment of a front blind 1 of a cupboard cabinet.
  • the same elements with the same reference numerals as in the preceding figures will not be described again in part again.
  • openings 40 are introduced, the distance in the longitudinal direction of the first profile body 11 is approximately equal to the extent of the openings 40 in the cross section of the profile body 11 of the profile element 10 seen are.
  • These introduced in the form of elongated holes openings 40 are arranged on the edge sides of the profile body 11 of the profile element 10.
  • the approximately parallel to the first profile body 11 arranged second profile body 8 of the profile element 10 also has openings 40, which are formed in this embodiment round.
  • the distance of the openings 40 of the second profile body 8 is greater than the dimensions of the openings 40 in the longitudinal direction of the second profile body 8.
  • a soundproofing element 5 is arranged at the first profile body 11 of the profile element 10 opposite side of the second profile body.
  • the sound-absorbing material of the soundproofing element 5 is in this embodiment, a nonwoven material which is arranged over the entire length of the second profile body 8 over this entire surface.
  • the sum of the total area of the openings 40 relative to the surface of the first profile body 11 of the profile element 10 in this embodiment is about 25%, which leads to very good sound absorption effects of the cabinet furniture according to the invention.
  • a front blind 1 is formed.
  • the front side 2 of the profile body 11 of the profile element 10 faces the interior.
  • the sound from the interior now passes through the openings 40 of the first profile body 11 in the cavity between the first profile body 11 and the second profile body 8 of the profile element 10.
  • the sound is partially absorbed and passes through the openings 40 of the second profile body 8 to the sound-absorbing material of the soundproofing element 5.
  • this sound is at least partially absorbed.
  • the soundproofing element is arranged, for example, that between the first profile body 8 of the profile element 10 and the soundproofing element an air gap is formed, through which the sound propagates along the soundproofing element 5 and also between the openings 40 of Profile body 8 of the profile element 10 is absorbed.
  • the now entering the cabinet furniture residual sound is further absorbed and reflected by the stored therein objects and by the furniture body itself and strongly attenuated coming from the interior of the cabinet furniture coming back to the soundproofing element 5.
  • the sound is further absorbed or from the second profile body 8 of the profile element 10 arranged behind the soundproofing element 5 is reflected back into the interior of the cabinet.
  • a very small proportion of the sound entering the cabinet now passes through the openings 40 of the second profile body and the openings 40 of the first profile body 11 of the profile element 10 in very small amounts back into the surrounding office space.
  • a reduction of the noise level can be achieved by the use of cabinet furniture according to the invention, such cabinet furniture according to the invention having a sound absorption coefficient of about 0.82.
  • Fig. 5 shows a perspective view of another non-inventive embodiment of a front blind 1 a cupboard furniture.
  • the first profile body 11 of the profile element 10 of the front blind 1 has an approximately U-shaped cross section with a constant wall thickness over the entire profile length.
  • openings 40 are introduced, which are formed approximately square in this embodiment.
  • the sum of the total area of the openings 40 with respect to the surface of the first profile body 11 of the profile element 10 in this embodiment is about 15%.
  • Spaced apart from the first profile body 11 of the profile element 10 is the second profile body 8.
  • the second profile body 8 is formed of a foamed material having a density of about 0.6 kg / m 3 and thus acts even as a soundproofing element 5.
  • the second Profile body 8 has approximately a threefold greater wall thickness than the first profile body 11 of the profile element 10. This design of the second profile body 8 of the profile element 10, on the one hand, achieves dimensional stabilization of the profile element 10, while, on the other hand, the second profile body 8 acts as a soundproofing element 5.
  • a profile body 8 made of a foamed material which is advantageously formed open-pore, the penetrating through the openings 40 of the first profile body 11 sound from offices on trained as a soundproofing element 5 second profile body 8 is absorbed and forwarded in small quantities in the cabinet interior.
  • the sound absorbed in the interior of the cabinet is not absorbed by the objects stored therein and the furniture carcass and is strongly attenuated coming from inside the cabinet furniture onto the underside of the second profile body 8 designed as soundproofing element 5 and is at least partially reflected back into the interior of the cabinet unit.
  • a very small reduced part of the sound now passes back into the interior via the open-pore geometry of the second profile body 8 designed as a soundproofing element 5 and the openings 40 of the first profile body 11, but this proportion is very negligible.
  • a sound absorption coefficient of about 0.65 a reduction of the noise level can be achieved in, for example, office space, resulting in an overall better and more optimal working environment.

Claims (4)

  1. Procédé de réduction acoustique dans des bureaux par utilisation d'un
    meuble comprenant un corps de meuble (2, 3, 4, 5) et au moins un rideau frontal (1), lequel est constitué d'éléments profilés (10) reliés entre eux, disposés parallèlement les uns aux autres, et est guidé dans des rainures de guidage (20) disposées sur le corps de meuble (2, 3, 4, 5),
    - les éléments profilés (10) réalisés en tant que profilé creux comprenant un seul espace creux présentant un premier corps profilé (11) et un deuxième corps profilé (8), lesquels sont disposés en étant distancés l'un de l'autre et entre lesquels l'espace creux est réalisé,
    - le premier corps profilé (11) et le deuxième corps profilé (8) étant reliés entre eux d'une seule pièce,
    - des ouvertures (40) distancées les unes des autres étant placées dans les deux corps profilés (8, 11),
    - chaque élément profilé (10) disposant de moyens de liaison (6, 7) sur ses grands côtés, par l'intermédiaire desquels plusieurs éléments profilés (10), mis en liaison active, forment le rideau frontal (1), et
    - l'un élément de liaison (6) étant une ouverture à peu près en forme de C en section transversale, laquelle s'étend sur toute la longueur de l'élément profilé (10), alors que l'autre moyen de liaison (7) est réalisé en tant qu'un élément (72) à peu près circulaire en section transversale, lequel est relié au côté longitudinal du premier corps profilé (11) par l'intermédiaire d'un élément (71) en forme de bande,
    caractérisé en ce que
    - les ouvertures (40) placées dans le premier corps profilé (11) sont réalisées de manière ronde,
    - en ce que l'écart entre les ouvertures (40) dans le sens longitudinal des corps profilés (8, 11) est plus grand que la double étendue des ouvertures (40) en vue en section transversale des corps profilés (8, 11),
    - en ce qu'en vue transversale, la largeur des ouvertures (40) est inférieure à un tiers de la largeur du côté avant (2) des corps profilés (8, 11), et
    - en ce que l'absorption acoustique dans le meuble ainsi que dans les éléments profilés (10) du meuble est réalisée sans qu'une matière supplémentaire absorbant le bruit acoustique ne soit utilisée, ce qui accroît encore plus l'effet d'absorption acoustique,
    - de sorte que le meuble présente un degré d'absorption acoustique suivant EN DIN 454 de moins de 0,4.
  2. Procédé selon la revendication 1, caractérisé en ce que la surface de toutes les ouvertures (40) du corps profilé (8, 11) de l'élément profilé (10) est inférieure à 45% et supérieure à 3% de la surface du côté avant (2) du corps profilé (8, 11) de l'élément profilé (10).
  3. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que les ouvertures (40) sont distancées les unes des autres de manière régulière.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'en vue en section transversale, l'élément profilé (10) présente une forme essentiellement en forme de C, de U, de Z ou de S.
EP11002772.9A 2005-09-28 2006-08-18 Méthode de reduction de bruit par utilisation d'une armoire Active EP2336477B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202005015290U DE202005015290U1 (de) 2005-09-28 2005-09-28 Schrankmöbel
EP06776946A EP1941121B1 (fr) 2005-09-28 2006-08-18 Armoire

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP06776946A Division EP1941121B1 (fr) 2005-09-28 2006-08-18 Armoire
EP06776946.3 Division 2006-08-18

Publications (3)

Publication Number Publication Date
EP2336477A2 EP2336477A2 (fr) 2011-06-22
EP2336477A3 EP2336477A3 (fr) 2011-12-07
EP2336477B1 true EP2336477B1 (fr) 2018-04-04

Family

ID=37495865

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06776946A Active EP1941121B1 (fr) 2005-09-28 2006-08-18 Armoire
EP11002772.9A Active EP2336477B1 (fr) 2005-09-28 2006-08-18 Méthode de reduction de bruit par utilisation d'une armoire

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP06776946A Active EP1941121B1 (fr) 2005-09-28 2006-08-18 Armoire

Country Status (10)

Country Link
EP (2) EP1941121B1 (fr)
CN (1) CN101305153B (fr)
AT (1) ATE542979T1 (fr)
DE (2) DE202005015290U1 (fr)
EA (1) EA012782B1 (fr)
ES (1) ES2380801T3 (fr)
PL (1) PL1941121T3 (fr)
PT (1) PT1941121E (fr)
WO (1) WO2007036265A1 (fr)
ZA (1) ZA200803257B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009014787U1 (de) 2009-11-02 2011-03-17 Rehau Ag + Co. Profilelement für Rollläden
TW201404281A (zh) * 2012-07-06 2014-01-16 Hon Hai Prec Ind Co Ltd 機櫃
FR3113074B1 (fr) * 2020-07-30 2022-10-28 Plastil France Lame acoustique

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1128688A (fr) * 1955-07-06 1957-01-09 Baumann Fils & Cie Volet roulant à lattes articulées en matière plastique
US5255970A (en) * 1992-05-26 1993-10-26 Theosabrata Yos S Storage cabinet
GB2302795A (en) * 1995-07-06 1997-02-05 Stuart John Middlehurst Ventilated security cabinet/desk
DE20308239U1 (de) * 2003-05-23 2003-08-14 Rehau Ag & Co Profilelement
DE20308240U1 (de) * 2003-05-23 2003-08-14 Rehau Ag & Co Profilelement
DE10343956A1 (de) 2003-09-19 2005-04-28 Ludewig Gmbh Kastenmöbel, insb. Küchenmöbel mit Frontjalouise

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EA012782B1 (ru) 2009-12-30
CN101305153A (zh) 2008-11-12
WO2007036265A1 (fr) 2007-04-05
CN101305153B (zh) 2013-03-27
PT1941121E (pt) 2012-04-23
DE202005015290U1 (de) 2006-12-14
EP2336477A3 (fr) 2011-12-07
ES2380801T3 (es) 2012-05-18
ATE542979T1 (de) 2012-02-15
EP1941121A1 (fr) 2008-07-09
ZA200803257B (en) 2009-02-25
EP1941121B1 (fr) 2012-01-25
PL1941121T3 (pl) 2012-07-31
EA200800941A1 (ru) 2008-10-30
EP2336477A2 (fr) 2011-06-22
DE202006020551U1 (de) 2008-11-20

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