FR2860036A1 - Thermal and acoustic protective shield for motor vehicle exhaust pipe has rigid structure and multi-layer complex joined by stitches - Google Patents

Thermal and acoustic protective shield for motor vehicle exhaust pipe has rigid structure and multi-layer complex joined by stitches Download PDF

Info

Publication number
FR2860036A1
FR2860036A1 FR0350598A FR0350598A FR2860036A1 FR 2860036 A1 FR2860036 A1 FR 2860036A1 FR 0350598 A FR0350598 A FR 0350598A FR 0350598 A FR0350598 A FR 0350598A FR 2860036 A1 FR2860036 A1 FR 2860036A1
Authority
FR
France
Prior art keywords
screen according
rigid structure
complex
thermal
reflective layer
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.)
Granted
Application number
FR0350598A
Other languages
French (fr)
Other versions
FR2860036B1 (en
Inventor
Raphael Merrien
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.)
Centre dEtude et de Recherche pour lAutomobile CERA
Original Assignee
Centre dEtude et de Recherche pour lAutomobile CERA
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 Centre dEtude et de Recherche pour lAutomobile CERA filed Critical Centre dEtude et de Recherche pour lAutomobile CERA
Priority to FR0350598A priority Critical patent/FR2860036B1/en
Publication of FR2860036A1 publication Critical patent/FR2860036A1/en
Application granted granted Critical
Publication of FR2860036B1 publication Critical patent/FR2860036B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/45—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by forming intermeshing loops or stitches from some of the fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/559—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B60R13/0212—Roof or head liners
    • B60R13/0225—Roof or head liners self supporting head liners

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

The shield (1), comprising rigid structure (2) and multi-layer complex with porous (3) and reflective (4) layers, is assembled by network of filaments passing through components and forming perforations (7) in reflective layer. The filaments are based on glass fibre and are applied in the form of stitches in zigzag rows (6). The shield (1), comprising a rigid structure (2) and a multi-layer complex with porous (3) and reflective (4) layers, is assembled by a network of filaments passing through the components and forming perforations (7) in the reflective layer. The filaments are based on glass fibre and are applied in the form of stitches in zigzag rows (6). The rigid structure is of a molded plastic material with a filler and integral fixings (5), and the multi-layer complex can be overmolded onto it. The reflective layer is of aluminum foil less than 100 microns thick.

Description

ECRAN DE PROTECTION THERMIQUE ET ACOUSTIQUE COMPRENANTTHERMAL AND ACOUSTIC PROTECTION SCREEN COMPRISING

UN COMPLEXE COUSUA SENSE COMPLEX

L'invention concerne un écran de protection thermique et acoustique et son s application à la protection d'une ligne d'échappement automobile.  The invention relates to a thermal and acoustic protection screen and its application to the protection of an automobile exhaust line.

Plus particulièrement, l'invention propose un écran apte à réaliser une protection en regard de zones modérément chaudes (température inférieure à 200 C environ) de la ligne d'échappement. i0  More particularly, the invention provides a screen capable of providing protection against moderately hot areas (temperature below about 200 ° C) of the exhaust line. i0

Les écrans proposés dans l'art antérieur prévoient typiquement l'incorporation d'une couche poreuse, isolant thermique et absorbant acoustique, entre une structure rigide, par exemple en tôle emboutie, et une couche réfléchissante dirigée vers la source chaude, telle qu'une ligne d'échappement, de sorte à réfléchir la chaleur émise par celle-ci.  The screens proposed in the prior art typically provide for the incorporation of a porous layer, thermal insulator and acoustic absorbent, between a rigid structure, for example of stamped sheet metal, and a reflective layer directed towards the hot source, such that a exhaust line, so as to reflect the heat emitted by it.

Il est ainsi possible de confiner la chaleur autour d'éléments fonctionnels, tels que des dispositifs de dépollution d'un pot catalytique, et de protéger des éléments fragiles disposés à proximité de la source chaude.  It is thus possible to confine the heat around functional elements, such as decontamination devices of a catalytic converter, and to protect fragile elements arranged near the hot source.

Afin de favoriser l'absorption des ondes sonores émises par la source, la couche réfléchissante peut être pourvue d'une pluralité de perforations aptes à permettre la propagation des ondes sonores au sein de la couche poreuse et leur atténuation par absorption.  In order to promote the absorption of the sound waves emitted by the source, the reflective layer may be provided with a plurality of perforations adapted to allow sound waves to propagate within the porous layer and attenuate them by absorption.

De tels écrans sont fixés sur un support, par exemple la ligne d'échappement ou bien un élément à protéger de la chaleur, usuellement par le biais de moyens de fixation traversant les écrans au travers d'orifices prévus à cette fin. De tels orifices présentent toutefois l'inconvénient de constituer des fuites thermiques et acoustiques qui réduisent l'efficacité des écrans. io  Such screens are fixed on a support, for example the exhaust line or an element to be protected from heat, usually by means of fixing means passing through the screens through orifices provided for this purpose. However, such orifices have the disadvantage of constituting thermal and acoustic leaks that reduce the effectiveness of the screens. io

Par ailleurs, l'assemblage entre la couche poreuse et la structure rigide, respectivement la couche réfléchissante, s'avère parfois complexe. Il peut par exemple être utilisé des techniques de sertissage ou de collage qui ne confèrent pas toujours la résistance mécanique attendue en phase d'utilisation, ceci dans un environnement chaud et soumis à des vibrations.  Furthermore, the assembly between the porous layer and the rigid structure, respectively the reflective layer, is sometimes complex. It can for example be used crimping or gluing techniques that do not always confer the mechanical strength expected during use, this in a hot environment and subjected to vibration.

Un but de la présente invention est de proposer un écran, utilisable dans les zones de températures modérées, dont les différents constituants sont assemblés de manière fiable.  An object of the present invention is to provide a screen, usable in areas of moderate temperatures, the various components are assembled reliably.

Un autre but est de proposer une fixation sur le véhicule simplifiée et exempte de fuites thermiques et acoustiques.  Another goal is to provide a fixation on the vehicle simplified and free of thermal and acoustic leaks.

A cet effet et selon un premier aspect, l'invention propose un écran de protection thermique et acoustique comprenant associés l'un sur l'autre une structure rigide et un complexe multicouche, ledit complexe comprenant une couche poreuse placée en vis à vis de ladite structure et une couche réfléchissante placée à l'opposé de ladite structure, ladite couche poreuse présentant des propriétés d'isolation thermique et d'absorption acoustique, ledit écran comprenant un réseau de fils traversant de part en part les couches dudit complexe de sorte à permettre l'association desdites couches entre elles en formant des perforations dans la couche réfléchissante.  For this purpose and according to a first aspect, the invention proposes a thermal and acoustic protection screen comprising, on top of each other, a rigid structure and a multilayer complex, said complex comprising a porous layer placed opposite said structure and a reflective layer placed opposite said structure, said porous layer having thermal insulation and sound absorption properties, said screen comprising a network of son passing right through the layers of said complex so as to allow associating said layers together by forming perforations in the reflective layer.

Le fait d'associer la couche réfléchissante et la couche poreuse par un réseau 25 de fils confère au complexe une très bonne cohésion et une très bonne résistance mécanique.  The fact of associating the reflecting layer and the porous layer with a network of wires gives the complex a very good cohesion and a very good mechanical strength.

De plus, les perforations formées par le réseau de fils dans la couche réfléchissante permettent aux ondes sonores de pénétrer au sein de la couche poreuse afin d'y être atténuées par absorption. La densité et la taille des perforations peuvent être adaptées aux caractéristiques acoustiques attendues.  In addition, the perforations formed by the son network in the reflective layer allow the sound waves to penetrate into the porous layer to be attenuated by absorption. The density and size of the perforations can be adapted to the expected acoustic characteristics.

Les fils peuvent être réalisés à base de fibre de verre, ce qui leur confère une très bonne résistance à la chaleur.  The threads can be made of fiberglass, which gives them a very good resistance to heat.

Selon une réalisation, le réseau de fils est cousu, ce qui présente l'avantage 5 d'une grande simplicité de fabrication associée à une grande robustesse du complexe obtenu.  In one embodiment, the son network is sewn, which has the advantage of great simplicity of manufacture associated with a high degree of robustness of the complex obtained.

Dans une configuration particulière, le réseau est formé de lignes en zigzag croisées, par exemple obtenu par une machine à coudre de type MALIMO, ce io qui permet de conférer au complexe une très bonne tenue mécanique dans toutes les directions. En variante, le réseau peut également être obtenu par tricotage.  In a particular configuration, the network is formed of crossed zigzag lines, for example obtained by a sewing machine of MALIMO type, which makes it possible to give the complex a very good mechanical strength in all directions. Alternatively, the network can also be obtained by knitting.

La structure rigide peut être à base d'un matériau plastique chargé moulé, par exemple un polyamide chargé de fibres de verre, ladite structure intégrant des moyens de fixation moulés d'une pièce avec elle. Le moulage permet de conférer aisément à l'écran la forme tridimensionnelle désirée, même dans le cas de formes complexes, et d'éviter une étape de réalisation complémentaire des moyens de fixation.  The rigid structure may be based on a molded filled plastic material, for example a polyamide filled with glass fibers, said structure incorporating fastening means molded integrally with it. The molding makes it possible to easily give the screen the desired three-dimensional shape, even in the case of complex shapes, and to avoid a step of complementary realization of the fixing means.

Du fait des températures modérées envisagées, de tels moyens de fixation en matériau plastique peuvent être disposés dans des moyens complémentaires prévus dans le support destiné à supporter l'écran, et ceci avec une bonne tenue mécanique en phase d'utilisation.  Due to the moderate temperatures envisaged, such fixing means of plastic material may be arranged in complementary means provided in the support for supporting the screen, and this with good mechanical strength in the use phase.

Afin de simplifier la fabrication de l'écran et d'optimiser la cohésion entre le complexe et la structure rigide, il peut être prévu que le complexe soit surmoulé par la structure rigide. En variante, il peut toutefois être prévu que cette cohésion soit assurée par collage à l'aide d'une résine thermodurcissable telle qu'une résine acrylique.  In order to simplify the manufacture of the screen and to optimize the cohesion between the complex and the rigid structure, it can be expected that the complex is overmolded by the rigid structure. Alternatively, it can however be expected that this cohesion is ensured by bonding with a thermosetting resin such as an acrylic resin.

La couche réfléchissante peut être formée d'une feuille d'aluminium d'épaisseur inférieure à 100 microns. De telles caractéristiques lui permettent de se prêter aisément à une mise en forme tridimensionnelle et à un perçage par l'aiguille lors de la mise en place du réseau de fils.  The reflective layer may be formed of aluminum foil less than 100 microns thick. Such characteristics allow it to easily lend itself to three-dimensional shaping and piercing by the needle during the establishment of the son network.

Selon une réalisation, la couche poreuse peut comprendre un feutre ou une laine de verre, matériau particulièrement adapté à l'isolation thermique et à l'absorption acoustique, et résistant à la chaleur.  According to one embodiment, the porous layer may comprise a felt or a glass wool, a material which is particularly suitable for thermal insulation and sound absorption, and heat resistant.

to La couche poreuse peut comprendre une pluralité de sous-couches, de type feuilleté , la distribution des sous-couches en nature, épaisseur et masse surfacique étant agencée en fonction des caractéristiques de protection thermique et acoustique attendues.  The porous layer may comprise a plurality of sub-layers, of laminated type, the distribution of the sub-layers in nature, thickness and surface mass being arranged according to the expected thermal and acoustic protection characteristics.

L'écran selon l'invention peut être appliqué à la protection thermique et acoustique d'une ligne d'échappement automobile, source de chaleur et de bruit générant d'importantes vibrations. Dans ce cas, la couche réfléchissante est disposée en regard de la ligne d'échappement de sorte à permettre le réfléchissement de la chaleur tout en permettant, par l'intermédiaire des perforations, l'atténuation des ondes sonores au sein de la couche poreuse.  The screen according to the invention can be applied to the thermal and acoustic protection of an automobile exhaust line, a source of heat and noise generating significant vibrations. In this case, the reflective layer is disposed facing the exhaust line so as to allow the reflection of heat while allowing, through the perforations, the attenuation of sound waves within the porous layer.

D'autres particularités et avantages de l'invention apparaîtront dans la description qui suit, faite en référence aux figures jointes où : É la figure 1 représente une vue schématique générale d'un écran selon l'invention; É la figure 2 représente une coupe schématique du complexe de l'écran représenté sur la figure 1.  Other features and advantages of the invention will appear in the description which follows, with reference to the attached figures in which: Figure 1 shows a general schematic view of a screen according to the invention; FIG. 2 represents a schematic section of the complex of the screen shown in FIG.

En référence aux figures 1 et 2, on décrit à présent un écran 1 selon un mode de réalisation de l'invention.  With reference to FIGS. 1 and 2, a screen 1 according to one embodiment of the invention is now described.

L'écran 1 comprend une structure rigide 2, par exemple à base de matière plastique moulée.  The screen 1 comprises a rigid structure 2, for example based on molded plastics material.

L'écran 1 comprend en outre un complexe 9, comprenant une couche poreuse 5 3, par exemple à base de laine de verre, et une couche réfléchissante 4, par exemple sous forme de feuille d'aluminium.  The screen 1 further comprises a complex 9, comprising a porous layer 5 3, for example based on glass wool, and a reflective layer 4, for example in the form of aluminum foil.

Les couches 3 et 4 sont associées entre elles, par exemple par couture, à l'aide d'un ou de fil(s) 8, par exemple à base de fibre de verre.  The layers 3 and 4 are associated with each other, for example by sewing, with the aid of one or more threads 8, for example based on fiberglass.

Le complexe 9 est associé, par exemple par surmoulage, à la structure rigide 2, la couche poreuse 3 étant disposée en vis à vis de la structure 2.  The complex 9 is associated, for example by overmolding, with the rigid structure 2, the porous layer 3 being disposed opposite the structure 2.

La couture est disposée par exemple en réseau de lignes en zigzag croisées 6, 15 chaque point de couture formant une perforation 7 dans la couche réfléchissante 4.  The seam is arranged for example in a network of crossed zigzag lines 6, each stitch forming a perforation 7 in the reflecting layer 4.

Selon une réalisation, il est prévu des moyens de fixation 5 moulés d'une pièce avec la structure rigide 2, par exemple sous forme de clips, permettant de monter l'écran à l'aide de moyens complémentaires prévus dans un support non représenté, par exemple sous la forme d'orifices de dimensions adaptées à celles des clips. io  According to one embodiment, fastening means 5 are molded in one piece with the rigid structure 2, for example in the form of clips, enabling the screen to be mounted using complementary means provided in a support, not shown, for example in the form of orifices of dimensions adapted to those of the clips. io

Claims (10)

REVENDICATIONS 1. Ecran de protection thermique et acoustique (1) comprenant, associés l'un sur l'autre, une structure rigide (2) et un complexe multicouche (9), ledit complexe comprenant une couche poreuse (3) placée en vis-à-vis de ladite structure et une couche réfléchissante (4) placée à l'opposé de ladite structure, ladite couche poreuse présentant des propriétés d'isolation thermique et d'absorption acoustique, ledit écran étant caractérisé en ce qu'il comprend un réseau de fils (8) traversant de part en part les couches dudit complexe de sorte à permettre l'association desdites couches entre elles en formant des perforations (7) dans la couche réfléchissante (4).  1. Thermal and acoustic protection screen (1) comprising, associated one on the other, a rigid structure (2) and a multilayer complex (9), said complex comprising a porous layer (3) placed vis-à-vis -vis of said structure and a reflective layer (4) placed opposite said structure, said porous layer having thermal insulation and sound absorption properties, said screen being characterized in that it comprises a network of son (8) passing right through the layers of said complex so as to allow the association of said layers together by forming perforations (7) in the reflective layer (4). 2. Ecran selon la revendication 1, caractérisé en ce que les fils (8) sont réalisés à base de fibre de verre.  2. Screen according to claim 1, characterized in that the son (8) are made of fiberglass. 3. Ecran selon la revendication 1 ou 2 caractérisé en ce que le réseau de fils (8) est cousu.  3. Screen according to claim 1 or 2 characterized in that the son network (8) is sewn. 4. Ecran selon l'une quelconque des revendications 1 à 3, caractérisé en ce 20 que le réseau (8) est formé de lignes en zigzag croisées (6).  4. Screen according to any one of claims 1 to 3, characterized in that the network (8) is formed of crossed zigzag lines (6). 5. Ecran selon l'une quelconque des revendications précédentes, caractérisé en ce que la structure rigide (2) est à base d'un matériau plastique chargé moulé, par exemple un polyamide chargé de fibres de verre, ladite structure intégrant des moyens de fixation (5) moulés d'une pièce avec elle.  5. Screen according to any one of the preceding claims, characterized in that the rigid structure (2) is based on a molded filled plastic material, for example a polyamide filled with glass fibers, said structure incorporating fastening means (5) molded in one piece with it. 6. Ecran selon la revendication 5, caractérisé en ce que le complexe (9) est surmoulé par la structure rigide (2).  6. Screen according to claim 5, characterized in that the complex (9) is overmolded by the rigid structure (2). 7. Ecran selon l'une quelconque des revendications précédentes, caractérisé en ce que la couche réfléchissante (4) est formée d'une feuille d'aluminium d'épaisseur inférieure à 100 microns.  7. Screen according to any one of the preceding claims, characterized in that the reflective layer (4) is formed of an aluminum sheet less than 100 microns thick. 8. Ecran selon l'une quelconque des revendications précédentes, caractérisé en ce que la couche poreuse (3) comprend un feutre ou une laine de verre.  8. Screen according to any one of the preceding claims, characterized in that the porous layer (3) comprises a felt or a glass wool. 9. Ecran selon l'une quelconque des revendications précédentes, caractérisé 5 en ce que la couche poreuse (3) comprend une pluralité de sous-couches.  Screen according to any one of the preceding claims, characterized in that the porous layer (3) comprises a plurality of sub-layers. 10. Application d'un écran selon l'une quelconque des revendications précédentes à la protection thermique et acoustique d'une ligne d'échappement automobile, dans laquelle la couche réfléchissante (4) est disposée en regard de ladite ligne.  10. Application of a screen according to any one of the preceding claims to the thermal and acoustic protection of an automobile exhaust line, wherein the reflective layer (4) is disposed opposite said line.
FR0350598A 2003-09-24 2003-09-24 THERMAL AND ACOUSTIC PROTECTION SCREEN COMPRISING A SUSPECTED COMPLEX Expired - Fee Related FR2860036B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0350598A FR2860036B1 (en) 2003-09-24 2003-09-24 THERMAL AND ACOUSTIC PROTECTION SCREEN COMPRISING A SUSPECTED COMPLEX

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0350598A FR2860036B1 (en) 2003-09-24 2003-09-24 THERMAL AND ACOUSTIC PROTECTION SCREEN COMPRISING A SUSPECTED COMPLEX

Publications (2)

Publication Number Publication Date
FR2860036A1 true FR2860036A1 (en) 2005-03-25
FR2860036B1 FR2860036B1 (en) 2005-11-18

Family

ID=34224477

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0350598A Expired - Fee Related FR2860036B1 (en) 2003-09-24 2003-09-24 THERMAL AND ACOUSTIC PROTECTION SCREEN COMPRISING A SUSPECTED COMPLEX

Country Status (1)

Country Link
FR (1) FR2860036B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2924716A1 (en) * 2007-12-11 2009-06-12 Cera Use of an aluminum sheet for fireproofing component comprising a structure made of plastic, where the sheet is associated with all or part of a face of the structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3821468A1 (en) * 1988-06-25 1989-12-28 Helmut W Diedrichs Insulating moulding
US5030518A (en) * 1987-12-09 1991-07-09 Messerschmitt-Boelkow-Blohm Gmbh Multi-layer thermal insulation, especially for spacecraft
US5196253A (en) * 1990-01-22 1993-03-23 Matec Holdikng Ag Sound absorbing heat shield with perforate support layer
DE19939482A1 (en) * 1999-08-20 2001-03-01 Helmut W Diedrichs Heat shield for motor vehicles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5030518A (en) * 1987-12-09 1991-07-09 Messerschmitt-Boelkow-Blohm Gmbh Multi-layer thermal insulation, especially for spacecraft
DE3821468A1 (en) * 1988-06-25 1989-12-28 Helmut W Diedrichs Insulating moulding
US5196253A (en) * 1990-01-22 1993-03-23 Matec Holdikng Ag Sound absorbing heat shield with perforate support layer
DE19939482A1 (en) * 1999-08-20 2001-03-01 Helmut W Diedrichs Heat shield for motor vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2924716A1 (en) * 2007-12-11 2009-06-12 Cera Use of an aluminum sheet for fireproofing component comprising a structure made of plastic, where the sheet is associated with all or part of a face of the structure

Also Published As

Publication number Publication date
FR2860036B1 (en) 2005-11-18

Similar Documents

Publication Publication Date Title
EP2114728B1 (en) Sound protection panel for automotive vehicle including an impregnated sealing layer
EP2159786B1 (en) Soundproofing assembly with a thin film for an automobile vehicle, and associated automobile vehicle
EP1908638A1 (en) Acoustic and thermal protection device
FR2922937A1 (en) GLAZING WITH IMPROVED VIBRO-ACOUSTIC DAMPING PROPERTY, METHOD FOR PRODUCING SUCH GLAZING, AND METHOD OF ACOUSTIC PROTECTION IN VEHICLE HABITACLE.
BE1022557B1 (en) INSONORE MATERIAL FOR COMPRESSOR AND METHOD OF MANUFACTURING THE SAME
EP1914406A1 (en) Sound and heat protection shield comprising micro-perforated metal
FR3033746A1 (en) ACOUSTIC PROTECTION DISPLAY FOR MOTOR VEHICLE ENGINE
FR3031944A1 (en) ACOUSTIC PROTECTION PANEL FOR MOTOR VEHICLE MOTOR
EP1586443A2 (en) Thermal and sound protective device
FR2860036A1 (en) Thermal and acoustic protective shield for motor vehicle exhaust pipe has rigid structure and multi-layer complex joined by stitches
EP3898339B1 (en) Acoustic protection system for motor vehicle mudguard
FR3064955B1 (en) THERMO-ACOUSTIC PROTECTION SCREEN FOR MOTOR VEHICLE
FR2901209A1 (en) Sound proofing screen for motor vehicle, has housing in its reverse side to form spacing zone between side and wall, where side has geometry corresponding to geometry of wall to take on wall`s shape
FR2941902A1 (en) Acoustic and thermal protection device for protecting e.g. turbine casing, from exhaust line in motor vehicle, has stiffening element for stiffening portion of flexible laminate, where other portion of laminate forms flexible portion
EP1902904B1 (en) Soundproofing component for a structure having an air space between an outer element and a structural organ
EP1520772B1 (en) Underbody deflector with sound shielding properties
EP0521740A1 (en) Material for acoustic protection and device incorporating such material
EP3765727A1 (en) Air filter with sound insulation
FR2656887A1 (en) Elastofibrous material making it possible to absorb noise, or to attenuate the propagation of noise in buildings
FR3107500A1 (en) Acoustic protection system for motor vehicle mud flaps
EP1520770B1 (en) Tructural floor module with sound insulation properties
FR3013629A1 (en) SOUND CONTROL PANEL AND AIRCRAFT
FR2930013A1 (en) Thermal protective screen mounting structure for hot wall of e.g. exhaust line, of motor vehicle, has compressible element arranged in space supported on wall and screen, and remote from fixation unit to realize vibration damping
FR2906844A1 (en) Acoustic and thermal protective shield for use under engine of motor vehicle, has foil provided with small dimension pinholes and associated with surface of lower structure via space unit such that foil is remote from structure
FR2889616A1 (en) ACOUSTIC PANEL OF TYPE A BLADE OF AIR

Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20080531