FR2900614A1 - Soundproofing and lining piece for motor vehicle floor, has soft foam body integrated to felt reinforcement element arranged to present load bearing capacity larger than that of foam, where element has upper face not molded from casting - Google Patents

Soundproofing and lining piece for motor vehicle floor, has soft foam body integrated to felt reinforcement element arranged to present load bearing capacity larger than that of foam, where element has upper face not molded from casting Download PDF

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Publication number
FR2900614A1
FR2900614A1 FR0603955A FR0603955A FR2900614A1 FR 2900614 A1 FR2900614 A1 FR 2900614A1 FR 0603955 A FR0603955 A FR 0603955A FR 0603955 A FR0603955 A FR 0603955A FR 2900614 A1 FR2900614 A1 FR 2900614A1
Authority
FR
France
Prior art keywords
foam
part according
molded
soundproofing
piece
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.)
Pending
Application number
FR0603955A
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French (fr)
Inventor
Jean Christophe Stein
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 FR0603955A priority Critical patent/FR2900614A1/en
Publication of FR2900614A1 publication Critical patent/FR2900614A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0815—Acoustic or thermal insulation of passenger compartments
    • B60R13/083—Acoustic or thermal insulation of passenger compartments for fire walls or floors

Abstract

The piece (1) has a soft foam body (2) integrated to a felt reinforcement element (3) molded from casting by the foam. The reinforcement element is arranged to present a load bearing capacity larger than that of the foam so as to limit the depression provoked by a passenger foot supported against the piece. The element presents an upper face (4) not molded from casting by the foam so as to permit the penetration and absorption of acoustic waves.

Description

1 L'invention concerne une pièce de garnissage et d'insonorisation d'unThe invention relates to a piece of lining and soundproofing of a

sol de véhicule automobile.motor vehicle floor.

Il est connu de réaliser une pièce de garnissage et d'insonorisation d'un sol de véhicule automobile, ladite pièce comprenant un corps à base de mousse souple, usuellement de faible portance, ladite pièce intégrant au moins un élément de renfort rigide surmoulé, en tout ou partie, par la mousse, ledit élément étant agencé de sorte à présenter une portance supérieure à celle de la mousse, de sorte à limiter l'enfoncement provoqué par le pied d'un passager disposé en appui contre ladite pièce face audit élément.  It is known to produce a piece of lining and soundproofing of a motor vehicle floor, said part comprising a body made of flexible foam, usually of low lift, said part incorporating at least one rigid overmoulded reinforcing element, all or part of the foam, said member being arranged to have a lift greater than that of the foam, so as to limit the depression caused by the foot of a passenger disposed in abutment against said piece facing said element.

Les éléments employés usuellement sont à base d'aggloméré de bois, de carton, ou matériaux analogues.  The elements usually used are based on wood chipboard, cardboard, or similar materials.

Ils présentent notamment les inconvénients d'un poids élevé, d'une élasticité faible, ne permettant pas de les utiliser comme ressorts d'un système d'isolation acoustique de type masse/ressort, et d'une porosité faible, ne permettant pas l'absorption des bruits de l'habitacle.  They have in particular the disadvantages of a high weight, low elasticity, not allowing them to be used as springs of a mass / spring type sound insulation system, and of low porosity, not allowing the absorption of cabin noise.

L'invention a pour but de pallier ces inconvénients en proposant une pièce de garnissage et d'insonorisation d'un sol de véhicule automobile dont le, ou les, élément de renfort présente une faible masse, une certaine élasticité, combinée à une bonne portance, et des propriétés d'absorption acoustique.  The invention aims to overcome these disadvantages by providing a piece of lining and soundproofing of a motor vehicle floor whose or the reinforcing element has a low mass, a certain elasticity, combined with good lift , and sound absorption properties.

A cet effet, l'invention propose une pièce de garnissage et d'insonorisation d'un sol de véhicule automobile, ladite pièce comprenant un corps à base de mousse souple, ledit corps intégrant au moins un élément de renfort à base de feutre surmoulé par la mousse, ledit élément étant agencé de sorte à présenter une portance supérieure à celle de la mousse, de sorte à limiter l'enfoncement provoqué par le pied d'un passager disposé en appui contre ladite pièce face audit élément. 2 D'autres particularités et avantages de l'invention apparaîtront dans la description qui suit, faite en référence à la figure jointe qui est une représentation schématique en coupe partielle d'une pièce selon un mode de réalisation de l'invention.  For this purpose, the invention proposes a piece of lining and soundproofing of a motor vehicle floor, said part comprising a flexible foam-based body, said body incorporating at least one felt-based reinforcing element overmolded by the foam, said member being arranged to have a greater lift than that of the foam, so as to limit the depression caused by the foot of a passenger disposed in abutment against said piece facing said element. Other features and advantages of the invention will appear in the description which follows, made with reference to the attached figure which is a schematic representation in partial section of a part according to one embodiment of the invention.

En référence à la figure, on décrit à présent une pièce 1 de garnissage et d'insonorisation d'un sol de véhicule automobile, ladite pièce comprenant un corps 2 à base de mousse souple, par exemple à base de polyuréthanne, ledit corps intégrant au moins un élément 3 de renfort à base de feutre surmoulé par la mousse, ledit élément étant agencé de sorte à présenter une portance supérieure à celle de la mousse, de sorte à limiter l'enfoncement provoqué par le pied d'un passager disposé en appui contre ladite pièce face audit élément. Selon la réalisation représentée, l'élément 3 présente une face 4 supérieure 15 non surmoulée par la mousse, de sorte à permettre la pénétration et l'absorption des ondes acoustiques en son sein.  With reference to the figure, there is now described a lining and soundproofing part 1 of a motor vehicle floor, said part comprising a body 2 based on flexible foam, for example based on polyurethane, said body incorporating the at least one foam-based reinforcing element 3 molded with the foam, said element being arranged to have a greater lift than that of the foam, so as to limit the depression caused by the foot of a passenger disposed in support against said piece facing said element. According to the embodiment shown, the element 3 has an upper face 4 15 not overmolded by the foam, so as to allow the penetration and absorption of acoustic waves within it.

De façon non représentée, la face supérieure 4 et la face inférieure de l'élément 3 peuvent être non surmoulées par la mousse, seule sa tranche étant 20 surmoulée.  In a manner not shown, the upper face 4 and the lower face of the element 3 may be overmolded by the foam, only its edge being overmolded.

De façon non représentée, lorsque l'on ne cherche pas une absorption des ondes sonores par l'élément 3, ledit élément peut être entièrement surmoulé par la mousse, ses faces supérieure 4 et inférieure, et sa tranche, étant 25 recouvertes de mousse.  In a manner not shown, when one does not seek an absorption of sound waves by the element 3, said element can be entirely overmolded by the foam, its upper and lower faces 4 and its edge being covered with foam.

Selon une réalisation, au moins un élément 3 se présente sous forme d'un flan présentant une géométrie plane ou développable. Une telle réalisation présente une grande simplicité liée au fait qu'elle met en oeuvre un simple surmoulage 30 d'un flan de feutre par la mousse.  According to one embodiment, at least one element 3 is in the form of a blank having a flat or developable geometry. Such an embodiment has a great simplicity due to the fact that it implements a simple overmolding of a felt blank by the foam.

Selon une autre réalisation, au moins un élément 3 se présente sous forme d'un flan pourvu d'au moins une découpe radiale agencée de sorte à permettre de lui conférer une géométrie non développable au sein de la mousse par laquelle il est surmoulé, ceci permettant de bénéficier d'un renfort sur des zones non développables, par exemple en zone de planche à talon.  According to another embodiment, at least one element 3 is in the form of a blank provided with at least one radial cutout arranged so as to make it possible to give it a non-developable geometry within the foam by which it is overmoulded, this allowing to benefit from a reinforcement on non-developable zones, for example in heel board area.

De façon non représentée, la pièce 1 peut comprendre en outre une couche étanche, par exemple à base d'élastomère thermoplastique chargé en charge minérale, ladite couche étant disposée contre le corps 2, de sorte à former un système d'isolation de type masse/ressort, la masse étant formée par ladite couche et le ressort étant formé par ledit corps.  In a manner not shown, the part 1 may further comprise a sealing layer, for example based on thermoplastic elastomer loaded with mineral filler, said layer being disposed against the body 2, so as to form a mass-type insulation system / spring, the mass being formed by said layer and the spring being formed by said body.

Selon la réalisation représentée, la pièce 1 comprend en outre une couche de revêtement d'aspect 5, par exemple à base de moquette. Selon une réalisation, la pièce 1 présente une géométrie tridimensionnelle pourvue de logements formant caves à pieds, un élément 3 étant disposé dans le fond de chacun desdits logements.  According to the embodiment shown, the part 1 further comprises a coating layer of appearance 5, for example based carpet. According to one embodiment, the piece 1 has a three-dimensional geometry provided with cells forming cellars with feet, an element 3 being disposed in the bottom of each of said housings.

20 Selon une réalisation, au moins un élément 3 est formé d'au moins deux couches superposées à base de feutre, de sorte à optimiser la résistance à l'enfoncement.  According to one embodiment, at least one element 3 is formed of at least two superposed layers based on felt, so as to optimize the resistance to penetration.

Bien entendu, la résistance à l'enfoncement peut être ajustée par tout autre 25 moyen connu de l'homme du métier, tel que par la densité du feutre, son épaisseur, la nature des fibres employées, etc.15  Of course, the driving resistance can be adjusted by any other means known to those skilled in the art, such as the density of the felt, its thickness, the nature of the fibers used, etc.

Claims (8)

REVENDICATIONS 1. Pièce (1) de garnissage et d'insonorisation d'un sol de véhicule automobile, ladite pièce comprenant un corps (2) à base de mousse souple, ladite pièce étant caractérisée en ce que ledit corps intègre au moins un élément (3) de renfort à base de feutre surmoulé par la mousse, ledit élément étant agencé de sorte à présenter une portance supérieure à celle de la mousse, de sorte à limiter l'enfoncement provoqué par le pied d'un passager disposé en appui contre ladite pièce face audit élément.  1. Part (1) of lining and soundproofing of a motor vehicle floor, said part comprising a body (2) based on flexible foam, said piece being characterized in that said body incorporates at least one element (3). ) of reinforcing felt-based molded by the foam, said member being arranged to have a lift greater than that of the foam, so as to limit the depression caused by the foot of a passenger disposed in abutment against said piece facing said element. 2. Pièce selon la revendication 1, l'élément (3) présentant au moins une face (4) non surmoulée par la mousse, de sorte à permettre la pénétration et l'absorption des ondes acoustiques en son sein.  2. Part according to claim 1, the element (3) having at least one face (4) not overmolded by the foam, so as to allow the penetration and absorption of acoustic waves therein. 3. Pièce selon l'une des revendications 1 ou 2, au moins un élément (3) se présentant sous forme d'un flan présentant une géométrie plane ou développable. 20  3. Part according to one of claims 1 or 2, at least one element (3) being in the form of a blank having a flat or developable geometry. 20 4. Pièce selon l'une des revendications 1 ou 2, au moins un élément (3) se présentant sous forme d'un flan pourvu d'au moins une découpe radiale agencée de sorte à permettre de lui conférer une géométrie non développable au sein de la mousse par laquelle il est surmoulé . 25  4. Part according to one of claims 1 or 2, at least one element (3) in the form of a blank provided with at least one radial cutout arranged to allow to confer a geometry non developable within foam by which it is overmolded. 25 5. Pièce selon l'une quelconque des revendications 1 à 4, ladite pièce comprenant en outre une couche étanche disposée contre le corps (2), de sorte à former un système d'isolation de type masse/ressort, la masse étant formée par ladite couche et le ressort étant formé par ledit corps. 30  5. Part according to any one of claims 1 to 4, said part further comprising a sealing layer disposed against the body (2), so as to form a mass / spring type insulation system, the mass being formed by said layer and the spring being formed by said body. 30 6. Pièce selon l'une quelconque des revendications 1 à 5, ladite pièce comprenant en outre une couche de revêtement d'aspect (5). 5  6. Part according to any one of claims 1 to 5, said part further comprising an appearance coating layer (5). 5 7. Pièce selon l'une quelconque des revendications 1 à 6, ladite pièce présentant une géométrie tridimensionnelle pourvue de logements formant caves à pieds, un élément (3) étant disposé dans le fond de chacun desdits logements.  7. Part according to any one of claims 1 to 6, said piece having a three-dimensional geometry provided with housing cellars with feet, an element (3) being disposed in the bottom of each of said housing. 8. Pièce selon l'une quelconque des revendications 1 à 7, au moins un élément (3) étant formé d'au moins deux couches à base de feutre, de sorte à optimiser la résistance à l'enfoncement.  8. Part according to any one of claims 1 to 7, at least one element (3) being formed of at least two layers based on felt, so as to optimize the resistance to depression.
FR0603955A 2006-05-03 2006-05-03 Soundproofing and lining piece for motor vehicle floor, has soft foam body integrated to felt reinforcement element arranged to present load bearing capacity larger than that of foam, where element has upper face not molded from casting Pending FR2900614A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0603955A FR2900614A1 (en) 2006-05-03 2006-05-03 Soundproofing and lining piece for motor vehicle floor, has soft foam body integrated to felt reinforcement element arranged to present load bearing capacity larger than that of foam, where element has upper face not molded from casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0603955A FR2900614A1 (en) 2006-05-03 2006-05-03 Soundproofing and lining piece for motor vehicle floor, has soft foam body integrated to felt reinforcement element arranged to present load bearing capacity larger than that of foam, where element has upper face not molded from casting

Publications (1)

Publication Number Publication Date
FR2900614A1 true FR2900614A1 (en) 2007-11-09

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FR0603955A Pending FR2900614A1 (en) 2006-05-03 2006-05-03 Soundproofing and lining piece for motor vehicle floor, has soft foam body integrated to felt reinforcement element arranged to present load bearing capacity larger than that of foam, where element has upper face not molded from casting

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FR (1) FR2900614A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7971683B2 (en) * 2007-02-06 2011-07-05 Centre D'etude Et De Recherche Pour L'automobile (Cera) Acoustic protective panel for vehicle comprising an impregnated sealing layer
JPWO2015146428A1 (en) * 2014-03-25 2017-04-13 林テレンプ株式会社 Silencer for automobile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398360A1 (en) * 1977-07-19 1979-02-16 Teroson Gmbh INSULATION AND ACOUSTIC CUSHIONING PROCESS FOR SOUND RADIANT SURFACES, APPROPRIATE COATING
EP0214559A2 (en) * 1985-09-06 1987-03-18 Stankiewicz GmbH Surface sound insulation part
JPS62279154A (en) * 1986-05-29 1987-12-04 Honda Motor Co Ltd Lamination sound insulation material
EP0493543B1 (en) * 1990-07-19 1995-12-06 Rieter Automotive (International) Ag Sound-absorbing lining for vehicles
US20050006173A1 (en) * 2003-07-08 2005-01-13 Lear Corporation Sound insulation system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398360A1 (en) * 1977-07-19 1979-02-16 Teroson Gmbh INSULATION AND ACOUSTIC CUSHIONING PROCESS FOR SOUND RADIANT SURFACES, APPROPRIATE COATING
EP0214559A2 (en) * 1985-09-06 1987-03-18 Stankiewicz GmbH Surface sound insulation part
JPS62279154A (en) * 1986-05-29 1987-12-04 Honda Motor Co Ltd Lamination sound insulation material
EP0493543B1 (en) * 1990-07-19 1995-12-06 Rieter Automotive (International) Ag Sound-absorbing lining for vehicles
US20050006173A1 (en) * 2003-07-08 2005-01-13 Lear Corporation Sound insulation system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7971683B2 (en) * 2007-02-06 2011-07-05 Centre D'etude Et De Recherche Pour L'automobile (Cera) Acoustic protective panel for vehicle comprising an impregnated sealing layer
JPWO2015146428A1 (en) * 2014-03-25 2017-04-13 林テレンプ株式会社 Silencer for automobile

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