FR2833909A1 - Sound damping bulkhead for motor vehicle has opening also closed by insulated closure to maintain insulation integrity - Google Patents

Sound damping bulkhead for motor vehicle has opening also closed by insulated closure to maintain insulation integrity Download PDF

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Publication number
FR2833909A1
FR2833909A1 FR0116877A FR0116877A FR2833909A1 FR 2833909 A1 FR2833909 A1 FR 2833909A1 FR 0116877 A FR0116877 A FR 0116877A FR 0116877 A FR0116877 A FR 0116877A FR 2833909 A1 FR2833909 A1 FR 2833909A1
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FR
France
Prior art keywords
shutter
soundproofing
orifice
motor vehicle
closed
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Granted
Application number
FR0116877A
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French (fr)
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FR2833909B1 (en
Inventor
Pascal Josse
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Renault SAS
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Renault SAS
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Publication date
Application filed by Renault SAS filed Critical Renault SAS
Priority to FR0116877A priority Critical patent/FR2833909B1/en
Publication of FR2833909A1 publication Critical patent/FR2833909A1/en
Application granted granted Critical
Publication of FR2833909B1 publication Critical patent/FR2833909B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08Insulating elements, e.g. for sound insulation
    • B60R13/0815Acoustic or thermal insulation of passenger compartments
    • B60R13/083Acoustic or thermal insulation of passenger compartments for fire walls or floors

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

The sound damping bulkhead separates the engine and passenger compartments. It has a sheet metal panel (1) with a double insulating foam layer (2,3). The bulkhead has an opening (4) with a closure (5) having insulation to form a continuous layer with the dashboard insulation.

Description

<Desc/Clms Page number 1> <Desc / Clms Page number 1>

Tablier insonorisé de véhicule à moteur à obturateur acoustique
L'invention concerne l'insonorisation des véhicules automobiles à moteur. Le compartiment moteur est généralement isolé de l'habitacle par un tablier insonorisé constitué d'une tôle couverte d'un isolant, et notamment d'un isolant complexe à base d'une mousse et d'une masse lourde.
Soundproof motor vehicle apron with acoustic shutter
The invention relates to the soundproofing of motor vehicles. The engine compartment is generally isolated from the passenger compartment by a soundproof apron made of a sheet covered with an insulator, and in particular of a complex insulator based on a foam and a heavy mass.

Lors de la construction de certains véhicules, il peut arriver que le poste de conduite soit mis en place avant que ne soit montés le groupe moto-propulseur et les trains. Il paraît alors opportun de prévoir un passage d'accès dans le tablier pour introduire la visseuse qui réalisera les fixations des composants du compartiment moteur sans perdre pour autant les qualités acoustiques du tablier. Tel est le but de l'invention.  During the construction of certain vehicles, it may happen that the driving position is set up before the powerplant and trains are mounted. It then seems advisable to provide an access passage in the bulkhead to introduce the screwdriver which will fix the components of the engine compartment without losing the acoustic qualities of the bulkhead. This is the object of the invention.

Ce but est atteint grâce à un tablier insonorisé de véhicule automobile, séparant le compartiment moteur de l'habitacle, comportant une pièce de tôlerie doublée d'un insonorisant, caractérisé en ce qu'il comporte un orifice associé à un obturateur adapté pour être fixé en position de fermeture de l'orifice et comportant un insonorisant qui peut être mis en continuité acoustique avec l'insonorisant du tablier.  This object is achieved by a soundproof motor vehicle apron, separating the engine compartment from the passenger compartment, comprising a sheet metal part lined with a soundproofing, characterized in that it comprises an orifice associated with a shutter suitable for being fixed. in the closed position of the orifice and comprising a soundproofing which can be put in acoustic continuity with the soundproofing of the apron.

Avantageusement, l'insonorisant du tablier et celui de l'obturateur sont des insonorisants complexes mousse/masse lourde.  Advantageously, the soundproofing of the apron and that of the shutter are complex soundproofing foam / heavy mass.

Avantageusement, l'obturateur comporte des moyens de clipsage sur les bords de l'orifice, mais d'autres modes de fixation sont envisageables.  Advantageously, the shutter comprises means for clipping onto the edges of the orifice, but other methods of attachment are possible.

Avantageusement, l'obturateur coopère avec un joint qui entoure le bord de l'orifice et qu'il met en compression lors de la fixation de l'obturateur.  Advantageously, the shutter cooperates with a seal which surrounds the edge of the orifice and which it puts in compression when the shutter is fixed.

Ces mesures garantissent qu'après mise en place de l'obturateur, on a établi la continuité d'isolation acoustique du tablier insonorisé.  These measures guarantee that, after fitting the shutter, the acoustic insulation continuity of the soundproofed deck has been established.

D'autres caractéristiques et avantages de l'invention ressortiront à la lecture de la description qui va suivre, en référence aux dessins annexés sur lesquels : - la figure 1 représente un premier exemple de réalisation de tablier muni d'un obturateur acoustique, vu en coupe schématique,  Other characteristics and advantages of the invention will emerge on reading the description which follows, with reference to the accompanying drawings in which: - Figure 1 shows a first embodiment of the deck provided with an acoustic shutter, seen in schematic section,

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- la figure 2 représente un second exemple de réalisation en coupe schématique.  - Figure 2 shows a second embodiment in schematic section.

Le tablier séparant le compartiment moteur de l'habitacle est constitué d'une pièce de tôlerie 1 ayant la forme voulue, doublée au moins à des endroits choisis, d'un insonorisant complexe constitué d'une mousse et d'une masse lourde 3 (par exemple en plastique du type polyéthylène PE ou en éthylacétate de vinyle EVA). Afin de laisser le passage éventuel à une visseuse, le tablier comporte un orifice qui peut être fermé, après montage, par un obturateur 5, adapté à la forme de l'orifice. L'obturateur 5 comporte d'une part une structure insonorisante à base du même complexe mousse 2', masse lourde 3'. Il comprend par ailleurs des moyens d'accrochage à l'orifice 4, notamment des moyens d'accrochage rapide. Ceux-ci sont constitués ici d'un châssis en plastique clipable 6 intégré à l'obturateur lors de sa fabrication (par moulage), comportant des pattes de clipage 7 venant coopérer avec les bords 8 de l'orifice pour réaliser la fixation par encliquetage. Un joint 9 entourant l'orifice est écrasé lors de la fixation de l'obturateur 5. La fixation, avec compression du joint, de l'obturateur insonorisé assure la continuité acoustique de l'ensemble.  The bulkhead separating the engine compartment from the passenger compartment consists of a sheet metal part 1 having the desired shape, doubled at least in selected places, with a complex soundproofing material consisting of foam and a heavy mass 3 ( for example plastic such as polyethylene PE or ethyl vinyl acetate EVA). In order to allow possible passage to a screwdriver, the apron has an orifice which can be closed, after assembly, by a shutter 5, adapted to the shape of the orifice. The shutter 5 comprises on the one hand a sound-absorbing structure based on the same foam complex 2 ', heavy mass 3'. It also comprises means for hooking to the orifice 4, in particular quick hooking means. These consist here of a clip-on plastic frame 6 integrated into the shutter during its manufacture (by molding), comprising clip tabs 7 which cooperate with the edges 8 of the orifice to achieve snap-fastening . A seal 9 surrounding the orifice is crushed when the shutter is fixed 5. The fixing, with compression of the seal, of the soundproofed shutter ensures the acoustic continuity of the assembly.

Selon les besoins et la disposition exacte du tablier, il est possible de prévoir que l'obturateur 5 vienne se fixer à partir du côté habitacle (comme représenté en figure 1) ou au contraire à partir du côté compartiment moteur. C'est ce qui est représenté dans l'exemple de réalisation de la figure 2, qui montre de manière schématique, le tablier 1, la traverse basse de tablier 10, la traverse inférieure de baie 11 et la traverse supérieure de baie 11'et le pare-brise 12, l'insonorisant de tablier supérieur 13 et l'insonorisant de tablier inférieur 14, constitués l'un et l'autre d'un complexe mousse/masse lourde non représenté.  Depending on the needs and the exact arrangement of the apron, it is possible to provide for the shutter 5 to be fixed from the passenger side (as shown in FIG. 1) or on the contrary from the engine compartment side. This is what is shown in the embodiment of Figure 2, which shows schematically, the deck 1, the lower deck cross 10, the lower bay cross 11 and the upper bay cross 11 'and the windshield 12, the soundproofing of the upper deck 13 and the soundproofing of the lower deck 14, each consisting of a foam / heavy mass complex, not shown.

Le tablier 1 comporte un orifice 4 obturable par un obturateur 5 qui vient se fixer sur les bords de l'orifice 4 en écrasant des joints 9.  The apron 1 has an orifice 4 which can be closed off by a shutter 5 which is fixed on the edges of the orifice 4 by crushing seals 9.

L'obturateur comporte une tôle 6 couverte d'une partie de mousse 2'et d'une masse lourde 3'. La fixation de l'obturateur se fait depuis le compartiment moteur, par exemple à l'aide de vis. The shutter comprises a sheet 6 covered with a portion of foam 2 ′ and a heavy mass 3 ′. The shutter is fixed from the engine compartment, for example using screws.

L'orifice 4 permet d'accéder par le compartiment moteur à l'ouverture d'accès 15 aux chapelles d'amortisseurs (non représentées),  The orifice 4 allows access by the engine compartment to the access opening 15 to the shock absorber chapels (not shown),

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laquelle ouverture 15 est refermée par un bloc insonorisant 16 immobilisé grâce à la fixation de l'obturateur 5 en place. which opening 15 is closed by a soundproofing block 16 immobilized by fixing the shutter 5 in place.

Claims (4)

REVENDICATIONS 1. Tablier insonorisé de véhicule automobile, séparant le compartiment moteur de l'habitacle, comportant une pièce de tôlerie (1) doublée d'un insonorisant (2,3), caractérisé en ce qu'il comporte un orifice (4) associé à un obturateur (5) adapté pour être fixé en position de fermeture de l'orifice (4) et comportant un insonorisant (2', 3') qui peut être mis en continuité acoustique avec l'insonorisant (2,3) du tablier. CLAIMS 1. Soundproof apron of a motor vehicle, separating the engine compartment from the passenger compartment, comprising a sheet metal part (1) lined with soundproofing (2,3), characterized in that it comprises an associated orifice (4) to a shutter (5) adapted to be fixed in the closed position of the orifice (4) and comprising a soundproofing (2 ', 3') which can be put in acoustic continuity with the soundproofing (2,3) of the deck . 2. Tablier selon la revendication 1, caractérisé en ce que l'insonorisant (2,2. Apron according to claim 1, characterized in that the soundproofing (2, 3) du tablier et celui (2', 3') de l'obturateur sont des insonorisants complexes mousse/masse lourde. 3) of the deck and that (2 ′, 3 ′) of the shutter are complex foam / heavy mass soundproofing. 3. Tablier selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que l'obturateur (5) comporte des moyens (7) de clipsage sur les bords de l'orifice (4). 3. Apron according to any one of claims 1 or 2, characterized in that the shutter (5) comprises means (7) of clipping on the edges of the orifice (4). 4. Tablier selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'obturateur (5) coopère avec un joint (9) qui entoure le bord de l'orifice (4).4. Apron according to any one of claims 1 to 3, characterized in that the shutter (5) cooperates with a seal (9) which surrounds the edge of the orifice (4).
FR0116877A 2001-12-26 2001-12-26 SOUNDPROOF APRON OF MOTOR VEHICLE WITH ACOUSTIC SHUTTER Expired - Fee Related FR2833909B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0116877A FR2833909B1 (en) 2001-12-26 2001-12-26 SOUNDPROOF APRON OF MOTOR VEHICLE WITH ACOUSTIC SHUTTER

Applications Claiming Priority (1)

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FR0116877A FR2833909B1 (en) 2001-12-26 2001-12-26 SOUNDPROOF APRON OF MOTOR VEHICLE WITH ACOUSTIC SHUTTER

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FR2833909A1 true FR2833909A1 (en) 2003-06-27
FR2833909B1 FR2833909B1 (en) 2004-06-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1535771A1 (en) * 2003-11-26 2005-06-01 Denso International America, Inc. Vehicle firewall with a heater pipe seal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4800984A (en) * 1987-04-24 1989-01-31 Cartex Corporation Acoustical barrier for vehicles
DE3937673A1 (en) * 1988-11-24 1990-05-31 Volkswagen Ag Two-armed sprung clamp - has first V=shaped section with angled arms, and second and third sections
DE4123883A1 (en) * 1991-07-18 1993-01-21 Daimler Benz Ag Dividing wall for engine compartment of bus - uses metal sheet fitted between two layers of insulating material
GB2343718A (en) * 1998-11-10 2000-05-17 Draftex Ind Ltd Steering column seal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4800984A (en) * 1987-04-24 1989-01-31 Cartex Corporation Acoustical barrier for vehicles
DE3937673A1 (en) * 1988-11-24 1990-05-31 Volkswagen Ag Two-armed sprung clamp - has first V=shaped section with angled arms, and second and third sections
DE4123883A1 (en) * 1991-07-18 1993-01-21 Daimler Benz Ag Dividing wall for engine compartment of bus - uses metal sheet fitted between two layers of insulating material
GB2343718A (en) * 1998-11-10 2000-05-17 Draftex Ind Ltd Steering column seal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1535771A1 (en) * 2003-11-26 2005-06-01 Denso International America, Inc. Vehicle firewall with a heater pipe seal
US6981737B2 (en) 2003-11-26 2006-01-03 Denso International America, Inc. Double plate heater pipe seal to dash

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Publication number Publication date
FR2833909B1 (en) 2004-06-11

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Effective date: 20090831