EP3399132B1 - Dispositif et procédé pour l'atténuation de la sensibilité d'un vitrage aux basses fréquences - Google Patents

Dispositif et procédé pour l'atténuation de la sensibilité d'un vitrage aux basses fréquences Download PDF

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Publication number
EP3399132B1
EP3399132B1 EP18170589.8A EP18170589A EP3399132B1 EP 3399132 B1 EP3399132 B1 EP 3399132B1 EP 18170589 A EP18170589 A EP 18170589A EP 3399132 B1 EP3399132 B1 EP 3399132B1
Authority
EP
European Patent Office
Prior art keywords
profile
cell
suspension
section
heavy body
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
EP18170589.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3399132A1 (fr
Inventor
Philippe BIBENS
Jean-François Blanpied
Olivier Tanneau
Claude Pelade
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.)
Hutchinson SA
Hydro Extruded Solutions AS
Original Assignee
Hutchinson SA
Hydro Extruded Solutions AS
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Publication date
Application filed by Hutchinson SA, Hydro Extruded Solutions AS filed Critical Hutchinson SA
Publication of EP3399132A1 publication Critical patent/EP3399132A1/fr
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Publication of EP3399132B1 publication Critical patent/EP3399132B1/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
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/20—Doors, windows, or like closures for special purposes; Border constructions therefor for insulation against noise
    • E06B5/205—Doors, windows, or like closures for special purposes; Border constructions therefor for insulation against noise windows therefor

Definitions

  • the invention relates to a device and a method for attenuating the sensitivity of glazing to low frequencies.
  • the invention is intended to improve the acoustic attenuation of a glazed opening, fixed or opening, on a hollow frame, with striking or sliding.
  • the invention is more particularly, but not exclusively, intended for an opening closed by multiple glazing, for example double glazing, in which the glazed surfaces are separated by a layer of gas, generally air.
  • the whole of the glazing is likely to enter into resonance under the effect of a low frequency stress, typically between 100 Hz and 200 Hz.
  • a low frequency stress typically between 100 Hz and 200 Hz. This type of stress is encountered, for example, when a vehicle passes close to the opening, for example a truck, and that it triggers an unpleasant noise, resulting from the low frequency resonance of the gas blade.
  • the document DE 2416637 describes a frame of an opening according to the preamble of claim 1.
  • the document US 8,006,440 describes a low-frequency sound attenuation device for double glazing mounted on a hollow frame, in which a specific resonator, capable of absorbing the acoustic energy of the resonating air gap, is integrated into the wedge separating the glazing .
  • This solution of the prior art requires the implementation of glazings manufactured specifically and consequently of a high cost and moreover conceals a part on the periphery of the glazing.
  • the dynamic damper absorbs the low-frequency vibratory energy of an opening whose frame comprises such a section, and in particular said damper absorbs the vibratory energy of the gas layer between the panes of double glazing.
  • the profile object of the invention makes it possible to form a frame using standard glazing and allows a fine adaptation of its attenuation characteristics according to the characteristics of the opening.
  • the heavy body is a metal bar.
  • said bar is easily introduced into the cell of the profile object of the invention.
  • the elastic suspension is a hollow section, of section adapted to the section of the cell, whose section internal is adapted to surround the section of the metal bar and which comprises external faces respectively facing internal walls of the cell, said external faces supporting elastic pads or lips extending, in section, between said external faces and the internal walls of the alveolus.
  • the cell has on the internal faces lugs or grooves extending longitudinally over all or part of the length of the heavy body. These lugs or grooves are configured and arranged so as to cooperate with the studs or lips of the suspension profile, and thus advantageously allow effective introduction of the suspension profile into the cell, since they play the role of insertion guides in particular. This avoids incorrect positioning of the suspension profile in the cell and therefore poor operation of the dynamic damper.
  • the suspension profile is made of viscoelastic, flexible and/or cellular materials.
  • This embodiment is economical, allows easy introduction of the metal bar into the suspension profile, while being tolerant to the dimensional variations of said bar resulting from its manufacturing tolerances.
  • the latter consists of an elastomer, in particular a cellular or flexible EPDM.
  • the suspension profile comprises on the internal faces of the elastic suspension studs or lips extending in section between the faces of the metal bar and the internal faces of the suspension profile.
  • Said elastic suspension studs or lips make it possible on the one hand to compensate for the dimensional dispersions of the metal bar forming the heavy body without significantly influencing the pressure on the external suspension studs.
  • these elastic suspension studs or lips advantageously allow effective introduction of the bar into the suspension profile, since they play the role of insertion guides in particular.
  • the suspension profile is made of a rigid material.
  • This embodiment makes it possible to increase the solidity of the suspension section, the elastic suspension studs or lips supported by the internal faces of the suspension section, as well as the elastic studs supported by the external faces of the said suspension section also making it possible to avoid any damaging contact between the metal bar and the section suspension on the one hand, and between the suspension profile and the cell on the other hand.
  • the latter is made of PVC or TPE.
  • the suspension profile is made of a flexible material.
  • the elastic suspension comprises at least one joint comprising a support stud on an inner face of the cell, said at least one joint being fixedly mounted on an outer face of the metal bar.
  • the fixing of said at least one gasket on the metal bar is carried out by gluing or by means of a hooking projection of said gasket configured to be clipped into a housing previously made in the metal bar.
  • the cell has external faces, one of said external faces being covered at least in part with adhesive means, and the cell being arranged so that its adhesive means are intended to be glued against the glazing of the glazed opening.
  • adhesive means also behave as a shock absorber.
  • the adhesive means are glue or adhesive tape.
  • the invention also relates to a frame for glazing, in particular double glazing, which comprises a profile according to any one of the preceding embodiments.
  • a frame for glazing in particular double glazing, which comprises a profile according to any one of the preceding embodiments.
  • This kit allows the process engineer to create carpentry that is damped with respect to the breathing frequency of the glazing.
  • the heavy body comprises a plurality of sections pre-cut to defined lengths.
  • the tuning of the frequencies to obtain the desired damping effect is obtained by assembling such sections.
  • Said method is advantageously implemented by computer for steps i) and ii) and thus makes it possible to provide assistance to the process engineer for the design of an opening implementing a profile according to the invention.
  • an opening frame is formed by several sections so as to have a so-called thermal break structure.
  • profile refers to a material which is given a predetermined shape, for example and in known manner by extrusion.
  • the opening frame comprises a profile (110) called frame and a profile (120) called glazing bead, separated by bars (130) weakly thermally conductive.
  • the frame profile (110) and the glazing bead (120) are made of a metallic material, for example an aluminum alloy, and the strips are made of a polymer, for example polyamide, and perform the function thermal break between the frame profile and the glazing bead.
  • the opening frame is not provided with a thermal break.
  • This sash frame supports a glazing (150), for example double glazing, consisting of two panes (151, 152) separated by a layer (153) of gas, for example air.
  • This air gap is likely to enter into resonance under the effect of external low frequency stresses, between 50 Hz and 300 Hz, most often between 100 Hz and 200 Hz, these stresses directly impacting the glazing (150) .
  • This frequency is designated by those skilled in the art as the “breathing” frequency of the glazing.
  • the profile object of the invention comprises in one of its cells (111) a dynamic damper comprising a heavy body (141), for example a metal bar, suspended in the said cell (111) of the profile at the means of a suspension, for example a suspension profile (142), made of an elastomer with elastic or viscoelastic behavior, for example an ethylene-propylene-diene monomer, or EPDM.
  • a dynamic damper comprising a heavy body (141), for example a metal bar, suspended in the said cell (111) of the profile at the means of a suspension, for example a suspension profile (142), made of an elastomer with elastic or viscoelastic behavior, for example an ethylene-propylene-diene monomer, or EPDM.
  • Said suspension profile (142) is a hollow profile, in contact with the internal surfaces of the cell via flexible studs (143) which, according to this example embodiment, are integral with said profile (142) of suspension.
  • studs 143
  • the cell (111) is, according to this embodiment, of closed and rectangular outline.
  • the contour of the cell is not completely closed and has another contour, polygonal or not.
  • the cell (111) comprises at least three internal faces capable of cooperating with the suspension to provide support.
  • the cell (111) comprises on the internal faces of the lugs or grooves extending longitudinally, that is to say in a direction perpendicular to the section represented on the figure 1 , over all or part of the length of the heavy body (141).
  • These lugs or grooves are configured and arranged so as to cooperate with the studs (143) or lips of the suspension profile (142), and thus advantageously allow effective introduction of the suspension profile (142) into the cell (111), because notably playing the role of insertion guides. This avoids a bad positioning of the profile (142) of suspension in the cell (111) and therefore a malfunction of the dynamic damper.
  • the metal bar (141) is, according to an exemplary embodiment, made of steel.
  • said steel intrinsically has stainless qualities or receives a surface treatment to limit or avoid corrosion phenomena.
  • the profile (142) for suspension comes into contact with the outer surfaces of the metal bar (141) constituting the heavy body, by flexible studs (144) extending between the outer surfaces of the bar ( 141) and the inner surfaces of the profile (142) hollow suspension.
  • the suspension profile (142) extends longitudinally, that is to say in a direction perpendicular to the section shown, over all or part of the length of the bar (141) which, according to an exemplary embodiment, is suspended by sections of such a suspension profile, distributed over its length.
  • the bar (141) extends longitudinally over all or part of the length of the cell (111).
  • the frame object of the invention is a sash frame with a dynamic damper in a frame section of said sash frame.
  • the dynamic damper is integrated into a cell of the glazing bead profile, or even said dynamic damper is integrated into a cell of a fixed frame or even into a fixed frame.
  • the invention is adaptable to any range, existing or future, of metal, plastic or composite sections of carpentry sections, provided that said sections comprise a cell capable of receiving the dynamic damper.
  • the suspension of the heavy body in said cell constitutes an essential structural element of the invention.
  • Figure 2A and 2C according to another exemplary embodiment of the profile (240) for suspension, the latter is made of elastomer and comprises studs (241) for bearing on the inner faces of the cell in the form of bosses formed in one piece with said profiled and has no interior studs.
  • the suspension profile comprises an extruded profile made of a rigid material, by example of PVC or TPE, on which are attached pads (242, 243) for internal and external support, made of a viscoelastic material. Said pads (242, 243) are for example attached by gluing or even coextruded. The position of the studs is adapted to rest on the internal faces of the flanges delimiting the cell into which the suspension profile is introduced.
  • the elastic suspension comprises at least one joint (245) comprising a bearing stud (246) on an inner face of the cell in the form of a boss, said stud (246) being by example made of viscoelastic material.
  • the elastic suspension comprises four seals (245) arranged respectively on the outer faces of the metal bar (141) by gluing (247).
  • a seal (245) comprises a hooking projection (248) configured to be clipped into a housing (145) previously made in the metal bar (141).
  • the bar is suspended in the cell of said profile by toroidal suspensions (340).
  • said suspensions (340) are fixed to the bar (141) by gluing.
  • the stiffness of said toric suspensions is adjusted by inflating the toric cavity of said suspensions.
  • a valve (not shown) is installed for this purpose on one of the faces of the cell of the hollow profile (110) as well as conduits connecting said valve to the toric cavities of said suspensions (340) in order to adjust the inflation pressure.
  • the suspension of the bar (141) is achieved by filling, around said bar, the cell (111) of the hollow section with foam, for example foam polyurethane.
  • the resonance frequency of the dynamic damper of the profile object of the invention is adjusted, for a given stiffness of the suspensions, by the length (341) of the bar, which length defines its mass.
  • a setting additional of this frequency is obtained by making holes (342) in said bar (141).
  • the hole (342) is shown here emerging but an equivalent result is obtained by a non-emerging hole or by any other machining making it possible to remove mass from said bar, but which makes it possible to retain the envelope of its section, for example a notch or groove.
  • a fixed frame or an opening frame comprises the assembly in square cut or in miter cut of 4 sections (110).
  • one or more of these sections is provided with a dynamic damper.
  • profiles are connected in the corners by brackets so that the length of the bar (141) is less than the length of the profile (110) so as to allow this assembly.
  • the profiled object of the invention is preferably used for making the frame of the opening, whether the latter is impact or sliding.
  • the bar and its suspensions are, for example glued, in the cell (111) to stabilize them in position.
  • the cell (411) has external faces, and one of said external faces is covered at least in part with adhesive means (412), the cell (411) being arranged so that its adhesive means are intended to be glued against the glazing (450) of the glazed opening.
  • said adhesive means (412) are glue, or even an adhesive tape as used in the construction industry (for example double-sided tape).
  • said adhesive means (412) are characterized by a tackiness chosen from a range of values so as to allow the cell (411) to adhere to the glazing (450), as well as to remain attached to this last.
  • adhesive means (412) differs from the solutions proposed by the state of the art, known to those skilled in the art, and in which the contact between the frame profile (410) and the glazing (450) is conventionally produced by means of a seal. More particularly, the inventors have found that replacing the conventional seal with such adhesive means (412) made it possible to optimize the performance of the dynamic damper, in other words to improve the acoustic attenuation.
  • the adhesive means (412) of this preferred alternative embodiment ensure the mechanical strength of the assembly formed by the profile (410) and the glazing (450).
  • the profile object of the invention is offered as a preconstituted assembly, or kit, comprising a length of a structural profile (510) comprising a cell, for example with a length of 3 meters or 6 meters, a length of metal bar (541) and a length of a section (540) capable of constituting a suspension, for example in the form of an EPDM extrusion.
  • said kit also includes angle brackets for assembling the frame.
  • said computer program is based on a simulation of the behavior of the frame and of the glazing, for example by means of a finite element model or is obtained from experimental results.
  • the computer program is replaced by printed charts. From the data thus obtained, the bar (541) is cut to the appropriate length then introduced into the suspension section, itself cut to length and finally the assembly is introduced into one or more structural sections.
  • the resonance frequency of the dynamic damper is notably dependent on the weight of the latter. Therefore, according to an advantageous embodiment, once the respiration rate has been determined by the computer program, said computer program determines the lengths of the suspended bar and of the suspension section respectively by maximizing the weight of said suspended bar within the dynamic damper.
  • the adjustment of the resonance frequency of the dynamic damper is carried out by first of all favoring the use of a suspended bar in the constitution of the latter, which also amounts to favoring a shortening by cutting of the suspension profile rather than the hanging bar.
  • the kit that is the subject of the invention, making it possible to avoid cutting the metal bar to length, the latter is delivered in pre-cut sections of the same length or of different lengths, for example, a plurality of sections (641) with a length of 20 cm and a plurality of sections (642) with a length of 50 cm.
  • said sections (641, 642) are assembled end to end and held together by a portion (640) of suspension profile extending between the two sections and at the junction thereof.
  • said sections (641, 642) are fixed by gluing or thanks to a mechanical fixing in said portion (640) of suspension section so as to stabilize the assembly. If necessary, the resonance frequency of the dynamic damper thus obtained is adjusted by a bore (645) of one of the bar sections (641).
  • Picture 7 a diagram having for abscissa (710) the frequency, and for ordinate (720) the acoustic attenuation in dB, shows the acoustic attenuation of a window when the latter is closed.
  • a first curve (730) in the form of a continuous polygonal line comprising filled circles, is produced by measuring the attenuation provided by a window not fitted with the profile which is the subject of the invention.
  • a second curve (740) in the form of a continuous polygonal line, shows the acoustic attenuation procured by a window equipped with the profile according to the invention.
  • This second curve (740) clearly shows a zone (750) of effective acoustic attenuation at frequencies substantially between 100 Hz and 200 Hz.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
EP18170589.8A 2017-05-04 2018-05-03 Dispositif et procédé pour l'atténuation de la sensibilité d'un vitrage aux basses fréquences Active EP3399132B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1753939A FR3065981B1 (fr) 2017-05-04 2017-05-04 Dispositif et procede pour l’attenuation de la sensibilite d’un vitrage aux basses frequences

Publications (2)

Publication Number Publication Date
EP3399132A1 EP3399132A1 (fr) 2018-11-07
EP3399132B1 true EP3399132B1 (fr) 2022-03-16

Family

ID=59811425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18170589.8A Active EP3399132B1 (fr) 2017-05-04 2018-05-03 Dispositif et procédé pour l'atténuation de la sensibilité d'un vitrage aux basses fréquences

Country Status (5)

Country Link
EP (1) EP3399132B1 (es)
DK (1) DK3399132T3 (es)
ES (1) ES2911892T3 (es)
FR (1) FR3065981B1 (es)
PL (1) PL3399132T3 (es)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2416637B2 (de) * 1974-04-05 1975-12-11 W. Hartmann & Co, 2000 Hamburg Schalldämmendes Fensterband o.dgl

Also Published As

Publication number Publication date
DK3399132T3 (da) 2022-04-25
ES2911892T3 (es) 2022-05-23
FR3065981B1 (fr) 2019-12-27
EP3399132A1 (fr) 2018-11-07
PL3399132T3 (pl) 2022-08-01
FR3065981A1 (fr) 2018-11-09

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