• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an acoustic absorption assembly (1) comprising a body (2) of tubular shape having ends respectively closed by a first and a second flexible plies (3, 4) stretched micro-perforated, and at least one diaphragm plane disposed inside the tubular body (2) between the micro-perforated flexible plies (3, 4) so as to delimit two spaces (6, 7) between said plies.
    公开号:FR3018384A1
    申请号:FR1451735
    申请日:2014-03-04
    公开日:2015-09-11
    发明作者:Jean-Marc Scherrer
    申请人:Jean-Marc Scherrer；
    IPC主号:
    专利说明:

    [0001] TECHNICAL FIELD OF THE INVENTION [1] The invention relates to the field of false-walls, and in particular that of false ceilings and false walls. The invention relates more particularly to an acoustic absorption assembly intended to be arranged in a room in order to control the acoustic behavior of the latter. [2] The sound absorption assembly is intended in particular, but not exclusively, to be associated with a false wall formed inside a room.
    [0002] STATE OF THE ART [3] Conventionally, the false walls are made from frames able to be fixed on a wall or a ceiling of a room and flexible sheets stretched on these frames. Despite their increasing use in various environments, false walls made with stretched flexible plies have a major disadvantage that is to present poor acoustic properties. Tensed tablecloths reflect the sound waves, thus generating an important phenomenon of reverberation (or echo) of the sound waves. [4] In order to overcome this drawback, it is known from the prior art to provide acoustic absorption assemblies comprising flexible plies provided with micro-perforations in order to make it possible to increase the absorption of the sounds and thus to attenuate them. the reflection of sound waves. By way of example, mention may be made of application WO200807737, which describes an acoustic absorbing assembly comprising two stretched sheets provided with micro-perforations extending substantially parallel to the wall to be covered. [5] The acoustic absorption assemblies of the prior art, however, have several disadvantages. First of all, acoustic assemblies of the prior art perform primarily for sound absorption at frequencies above 1500 Hz (high frequencies). However, they remain poorly performing for the absorption of low frequency sounds (frequencies below 300 Hz). Moreover, the acoustic assemblies of the prior art are fixed directly on the wall to be covered. However, when they are already equipped with false walls made with tensioned flexible sheets, it is necessary to remove them to allow the installation of sound absorption assemblies. The absorption zones therefore remain limited to the number of micro-perforated sheets. [006] The invention aims to remedy these problems by proposing an acoustic absorption assembly offering satisfactory acoustic properties on both the high and low frequencies while offering an increased absorption capacity with respect to the absorption assemblies. acoustics of the prior art. [007] The invention also aims to provide an acoustic absorption assembly for illuminating the room in which it is placed and / or to provide an aesthetic while ensuring the sound insulation of the latter. OBJECT OF THE INVENTION [8] For this purpose, and according to a first aspect, the invention proposes an acoustic absorption assembly comprising a tubular-shaped body having ends closed respectively by a first and a second micro-tensioned flexible plies. perforated, and at least one plane diaphragm disposed inside the tubular body, between the micro-perforated flexible plies, so as to define two spaces between said plies. [9] Thus, by the present micro-perforated sheets and a planar diaphragm and the arrangement of these elements with respect to each other, the sound absorption assembly allows a sound absorption at high and low frequencies and offers a greater sound absorption area than that proposed by the acoustic absorption sets of the prior art. By low frequencies means frequencies below 300 Hz and high frequencies means frequencies greater than 1500 Hz. Furthermore, micro-perforations are also understood to mean perforations having a diameter of less than 5 000 Hz. millimeters. According to an advantageous embodiment, the diaphragm is fixed to the body via vibration damping means. This makes it possible to prevent the vibrations to which the diaphragm is subjected from being damped by the damping means, thus preventing the acoustic assembly from being subjected to vibrations. Advantageously, the acoustic absorption assembly comprises at least one taut internal flexible sheet interposed between at least one of the micro-perforated flexible sheets and the diaphragm. Depending on the use to which the acoustic assembly is intended, the inner flexible ply may be either micro-perforated or devoid of perforation. Advantageously, the acoustic absorption assembly comprises at least one absorbent porous material panel (s) interposed between at least one of the flexible plies (end plies or inner ply (s)). )) and the diaphragm. Advantageously, the sound absorption assembly comprises light means formed in one of the spaces. [0016] Advantageously, the diaphragm is a flexible metal plate. Advantageously, the metal plate is arranged parallel with the flexible plies (end plies and inner ply (s)). Advantageously, at least one of the flexible plies (end plies and inner ply (s)) is translucent. The sound absorption assembly is advantageously intended to be mounted on a false wall. The invention also relates to an installation comprising a false wall and at least one sound absorption assembly as previously described. Preferably, said assembly is fixed on the false wall at a distance greater than or equal to a limit value. More particularly, it is a question of placing the acoustic assembly so as to have one of the micro-perforated flexible sheets at a distance greater than or equal to the limit value. The acoustic assembly thus offers a double input of the sound waves, increasing the absorption surface of the waves and thus improving the acoustic insulation of the room in which the system is disposed. According to a particular embodiment, the limit value is of the order of 2 centimeters. BRIEF DESCRIPTION OF THE FIGURES [0022] Other objects and advantages of the invention will become apparent from the following description, made with reference to the accompanying drawings, in which: - Figure 1 shows a schematic sectional view of a set acoustic absorption according to a first embodiment, said assembly being shown mounted on a false ceiling; - Figure 2 shows a schematic sectional view of an acoustic absorption assembly according to a second embodiment, said assembly being shown mounted on a false ceiling; - Figure 3 shows a schematic sectional view of an acoustic absorption assembly according to a third embodiment, said assembly being shown mounted on a false ceiling. For clarity, identical or similar elements of the different embodiments are identified by identical reference signs throughout the figures. DETAILED DESCRIPTION OF THE FIGURES [0024] In relation to FIG. 1, there is described an acoustic absorption assembly 1 according to a first embodiment, said assembly being shown mounted on a false ceiling 50. In order to avoid weighing down the figures, the fastening means of the sound absorption assembly on the false ceiling have not been shown. They may include any suitable means known to those skilled in the art such as suspension lines or more elaborate systems such as those described in the patent application FR2867797. The sound absorbing assembly 1 comprises a body 2 of tubular shape (hereinafter referred to as box body 2) closed at its ends respectively by a first and a second flexible ply 3, 4 stretched micro- perforated. Subsequently, end-plies 3, 4 will be spoken. The micro-perforated plies 3, 4 are intended to absorb sounds at high frequencies. In the embodiment described, the casing body 2 is of parallelepipedal shape. It is understood that the box body 2 is not limited to this form, the latter can take any other form without departing from the scope of the invention. In order to allow the attachment of the end plies 3, 4, the ends of the body body 2 are advantageously provided with fastening means conventionally used for fixing stretched sheets. According to a particular configuration, it may be provided that the body 2 of the box is formed of a profile or of several abutting sections, each section forming a receiving plate hooking means provided at the peripheral edge of the plies. The sound absorption assembly 1 also comprises a plane diaphragm 5 absorbing the sound at low frequency. In the illustrated embodiment, the diaphragm is a flexible metal plate. This is disposed inside the tubular body 2, between the end plies so as to define between said plies two spaces 6, 7 preferably separate. In other words, the spaces 6, 7 do not communicate with each other. Advantageously, the metal plate 5 is arranged parallel to the end plies 3, 4. According to a particularly advantageous embodiment, the metal plate 5 is fixed to the body 2 of the box by means of a fastening system. provided with vibration damping means (not shown). The damping means consist of one or more parts made of a flexible material so as to allow the absorption of vibrations between the metal plate 5 when it vibrates under the action of acoustic waves and the body 2 housing supporting said plate. The metal plate 5 can thus vibrate and absorb the low frequencies without the acoustic assembly 1 also vibrating. By way of example, the damping means are Silent Blocks®. The metal plate 5 is advantageously located equidistant from the end plies 3, 4. The acoustic assembly 1 is mounted so as to have one of the end plies 3, 4 facing each other. against the false ceiling 50, the box body 2 extending substantially perpendicularly to the plane of the false ceiling 50. The acoustic assembly 1 is placed at a distance from the false ceiling 50 so as to double the acoustically treated surfaces. Indeed, being placed at a certain distance from the false ceiling 50, the acoustic assembly 1 offers a high surface (corresponding to the end ply 3) and a low surface (corresponding to the end ply 4) micro-perforated absorbing high frequency sounds. So that the acoustic assembly 1 can thus act as a double acoustic box, it is appropriate to place the acoustic assembly 1 at a distance of at least 2 centimeters from the false ceiling. Subsequently, the upper end ply 3 will be designated as the end ply closest to the false ceiling 50 and the lower end ply 4 as the end ply furthest from the false ceiling 50. In the embodiment illustrated in FIG. 2, the sound absorption assembly 10 includes all the characteristics of the element previously described. The acoustic assembly 10 further comprises light means 8 formed in the lower space 7 (defined space between the metal plate 5 and the lower metal plate 4). The light means 8 are fixed, directly or indirectly on the lower face of the metal plate 5, as well as on the wall portion of the box body 2 located under the metal plate 5. It is of course obvious that the invention is not This light is not limited to this configuration, the light means 8 being able to be provided only on the metal plate 5 or only on the wall portion of the box body 2. Advantageously, the acoustic assembly 10 comprises an inner flexible ply 9 interposed between the lower metal plate 4 and the metal plate 5. the inner ply 9 is devoid of perforation. Depending on the lighting power of the light means 8, the inner web 9 will be translucent or not. The inner ply 9 is disposed parallel to the end plies 3, 4. The acoustic assembly 10 further comprises a panel of porous absorbent (s) material (s) 11 interposed between the ply of plywood. end 3 and the metal plate 5. This thus improves the sound insulation. Of course, it is obvious that if the absorption assembly does not comprise light means, a panel of absorbent porous material (s) 11 could also be provided in the lower space 7 delimited by the metal plate 5 and the lower end ply 4, replacing or complementing that disposed in the upper space 6. Furthermore, in the illustrated embodiment, the porous material panel (11) is formed in one piece and filled the entire upper acoustic space. It is of course obvious that the panel of porous material (x) 11 could be formed of several layers of the same or different material (x) porous (x) and could also have smaller dimensions, in particular to limit the weight of the acoustic ensemble. In the embodiment illustrated in FIG. 3, the sound absorption assembly 20 takes up all the characteristics of the element described with reference to FIG. 1. [0036] The sound absorption assembly 20 further comprises two micro-perforated flexible inner plies 12, 13 interposed between the lower end ply 4 and the metal plate 5. The internal plies 12, 13 are arranged parallel to one another and to the metal plate 5. In order to to improve the acoustic insulation, two panels of absorbent porous material (s) 11, 14, one being interposed being between the metal plate 5 is the inner sheet 12 adjacent, the other being inserted between the metal plate 5 and the upper end sheet 3. It is of course obvious that the invention is not limited to this configuration. For example, an acoustic absorption assembly may be provided comprising only one or more acoustic internal layers 12, 13 (ie micro-perforated), these being able to be placed in one or the other space. 6, 7 delimited by the metal plate 5. Furthermore, the absorption assembly 20 may be provided without a panel of absorbent porous material (s) or with a single one, in this case arranged either in the upper space 6 or in the lower space 7. Furthermore, in the illustrated embodiment, the porous material panels (x) absorbent (s) 11, 12 are formed in one piece and fill all the acoustic spaces. It is of course obvious that the panels 11, 12 could be formed of several layers of the same or different absorbent material (s) and could also have smaller dimensions especially to limit the weight of the acoustic assembly. In the embodiments described, the end plies 3, 4 are shown arranged to extend in a plane containing the end edges 21, 22, 23, 24 of the body 2 of the box. It can also be provided that these end plies are disposed at the ends of the body body 2 but in a plane slightly offset from the plane passing through the end edges 21, 22, 23, 24 of the body 2 of caisson. Moreover, in the embodiments described above, the selected diaphragm is a metal plate. It is of course obvious that the above description also applies with diaphragms other than a metal plate. In the embodiments described above, the false wall opposite which the acoustic assembly is placed is a false ceiling, the assembly then forming a horizontally suspended assembly. It is of course obvious that the false wall opposite which the acoustic assembly is placed may also be a wall, the acoustic assembly then forming a vertically suspended assembly. According to a particular embodiment, it may also be provided an acoustic assembly arranged to present a portion intended to be placed facing the ceiling and another part placed facing the wall, the acoustic assembly then forming a horizontally and vertically suspended assembly . If it is described above the mounting of a single acoustic assembly on a false wall, it is clear that there may be provided an installation in which the false wall is equipped with several acoustic assemblies. Moreover, in the embodiments described above, the acoustic assembly is associated with a false wall, and in this case a false ceiling. It is of course obvious that the acoustic assembly according to the invention could also be implemented directly on a ceiling or a wall. The invention is described in the foregoing by way of example. It is understood that the skilled person is able to achieve different embodiments of the invention without departing from the scope of the invention.
    权利要求:
    Claims (12)
    [0001]
    REVENDICATIONS1. Sound absorption assembly (1, 10, 20) comprising a body (2) of tubular shape having ends closed respectively by a first and a second flexible plies (3, 4) stretched micro-perforated, and at least one plane diaphragm disposed within the tubular body (2) between the micro-perforated flexible plies (3, 4) so as to delimit two spaces (6, 7) between said plies.
    [0002]
    2. Sound absorption assembly (1, 10, 20) according to claim 1, characterized in that the diaphragm is fixed on the body (2) by means of vibration damping means.
    [0003]
    3. sound absorbing assembly (1, 10, 20) according to claim 1 or claim 2, characterized in that it comprises at least one flexible ply (9, 12, 13) internally interposed between at least one flexible plies (3,
    [0004]
    4) micro-perforated and the diaphragm. 4. sound absorption assembly (1, 10, 20) according to claim 3, characterized in that the inner flexible ply (9, 12, 13) is micro-perforated.
    [0005]
    5. sound absorption assembly (1, 10, 20) according to claim 3, characterized in that the inner flexible ply (9, 12, 13) is devoid of perforation.
    [0006]
    6. Sound absorption assembly (1, 10, 20) according to any one of claims 1 to 5, characterized in that it comprises at least one panel of absorbent porous material (s) interposed between the at least one of the flexible plies (3, 4, 9, 12, 13) and the diaphragm.
    [0007]
    7. Sound absorption assembly (1, 10, 20) according to any one of claims 1 to 6, characterized in that it comprises light means (8) formed in one of the spaces (6, 7) .
    [0008]
    8. Sound absorption assembly (1, 10, 20) according to any one of claims 1 to 7, characterized in that the diaphragm is a flexible metal plate (5).
    [0009]
    9. sound absorption assembly (1, 10, 20) according to claim 8, characterized in that the metal plate (5) is arranged parallel with the flexible plies (3, 4, 9, 12, 13).
    [0010]
    10. Sound absorption assembly (1, 10, 20) according to any one of claims 1 to 9, characterized in that at least one of the flexible plies is translucent.
    [0011]
    11. Installation comprising a false wall and at least one sound absorption assembly (1, 10, 20) according to any one of the preceding claims, said assembly being fixed on the false wall at a distance greater than or equal to a limit value. .
    [0012]
    12. Installation according to claim 11, characterized in that the limit value is of the order of 2 centimeters.
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    同族专利:
    公开号 | 公开日
    US20160365079A1|2016-12-15|
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    DK3114678T3|2021-12-20|
    EP3114678A1|2017-01-11|
    CN106103858A|2016-11-09|
    AU2015225964B2|2020-06-25|
    WO2015132521A1|2015-09-11|
    CA2941314A1|2015-09-11|
    AU2015225964A1|2016-08-25|
    EP3114678B1|2021-09-15|
    US10109269B2|2018-10-23|
    FR3018384B1|2016-03-11|
    引用文献:
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    法律状态:
    2015-03-31| PLFP| Fee payment|Year of fee payment: 2 |
    2016-03-22| PLFP| Fee payment|Year of fee payment: 3 |
    2016-04-15| CL| Concession to grant licences|Name of requester: NORMALU, FR Effective date: 20160314 |
    2017-02-21| PLFP| Fee payment|Year of fee payment: 4 |
    2018-02-20| PLFP| Fee payment|Year of fee payment: 5 |
    2020-02-20| PLFP| Fee payment|Year of fee payment: 7 |
    2021-02-18| PLFP| Fee payment|Year of fee payment: 8 |
    2022-02-21| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1451735A|FR3018384B1|2014-03-04|2014-03-04|ACOUSTIC ABSORPTION ASSEMBLY WITH HIGH AND LOW FREQUENCIES|FR1451735A| FR3018384B1|2014-03-04|2014-03-04|ACOUSTIC ABSORPTION ASSEMBLY WITH HIGH AND LOW FREQUENCIES|
    US15/121,408| US10109269B2|2014-03-04|2015-03-03|High and low frequency sound absorption assembly|
    CN201580011760.5A| CN106103858B|2014-03-04|2015-03-03|High and low frequency sound absorption assembly|
    EP15713974.2A| EP3114678B1|2014-03-04|2015-03-03|High and low frequency sound absorption assembly|
    CA2941314A| CA2941314A1|2014-03-04|2015-03-03|High and low frequency sound absorption assembly|
    AU2015225964A| AU2015225964B2|2014-03-04|2015-03-03|High and low frequency sound absorption assembly|
    PCT/FR2015/050509| WO2015132521A1|2014-03-04|2015-03-03|High and low frequency sound absorption assembly|
    DK15713974.2T| DK3114678T3|2014-03-04|2015-03-03|HIGH AND LOW FREQUENCY SOUND ABSORBING DEVICE|
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