FR2884200A1 - Motor vehicle body`s hollow unit filling device for e.g. engine noise insulation, has elongated body made of flexible foam precursor material, and partitions defining closed filling volume inside hollow unit and associated to hollow unit - Google Patents
Motor vehicle body`s hollow unit filling device for e.g. engine noise insulation, has elongated body made of flexible foam precursor material, and partitions defining closed filling volume inside hollow unit and associated to hollow unit Download PDFInfo
- Publication number
- FR2884200A1 FR2884200A1 FR0503434A FR0503434A FR2884200A1 FR 2884200 A1 FR2884200 A1 FR 2884200A1 FR 0503434 A FR0503434 A FR 0503434A FR 0503434 A FR0503434 A FR 0503434A FR 2884200 A1 FR2884200 A1 FR 2884200A1
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- FR
- France
- Prior art keywords
- partitions
- hollow unit
- hollow
- motor vehicle
- volume
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
- B62D29/002—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material a foamable synthetic material or metal being added in situ
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/18—Filling preformed cavities
- B29C44/188—Sealing off parts of the cavities
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
L'invention concerne un dispositif de remplissage d'un volume d'un élémentThe invention relates to a device for filling a volume of an element
creux de carrosserie automobile, en vue d'assurer une protection acoustique, et une carrosserie comprenant un tel dispositif. automotive body cavity, for providing acoustic protection, and a bodywork comprising such a device.
La fonction principale de ce dispositif est d'isoler l'habitacle des bruits du moteur et/ou provenant de l'extérieur, par exemple les bruits de roulement. The main function of this device is to isolate the cabin noise from the engine and / or from the outside, for example rolling noise.
Il est connu de réaliser un tel dispositif comprenant un matériau précurseur de mousse souple expansible à la chaleur, afin d'assurer après expansion de la io mousse, une obturation étanche de l'élément creux, ceci par adhésion de la mousse contre la paroi interne de l'élément creux. It is known to produce such a device comprising a heat-expandable flexible foam precursor material, in order to ensure, after expansion of the foam, a sealing of the hollow element by adhering the foam against the inner wall. of the hollow element.
Dans ce type de réalisation, le dispositif est introduit dans l'élément creux avant expansion de la mousse. Une étape de chauffage ultérieure, réalisée is typiquement lors de la cuisson des mastics ou de la peinture de la carrosserie, permet de réaliser l'expansion de la mousse et d'assurer ainsi l'étanchéité attendue. In this type of embodiment, the device is introduced into the hollow element before expansion of the foam. A subsequent heating step, which is typically carried out during the firing of mastics or paint of the bodywork, makes it possible to carry out the expansion of the foam and thus to ensure the expected seal.
Afin d'assurer une expansion satisfaisante de la mousse, et donc un bon remplissage de l'élément creux, il est nécessaire de maintenir le matériau précurseur de mousse, à l'état non expansé, à distance de la paroi interne de l'élément creux. In order to ensure a satisfactory expansion of the foam, and therefore a good filling of the hollow element, it is necessary to maintain the foam precursor material, in the unexpanded state, away from the inner wall of the element. hollow.
Le document FR-04 03243 prévoit un dispositif permettant d'assurer un tel écartement entre le matériau et l'élément. The document FR-04 03243 provides a device for ensuring such a separation between the material and the element.
Cependant, la réalisation proposée dans ce document, prévoit l'insertion du dispositif par coulissement dans l'élément creux. Un tel mode de positionnement du dispositif n'est toutefois pas toujours compatible avec les exigences de montage des véhicules automobiles et entraîne des difficultés de montage importantes. However, the embodiment proposed in this document provides for the insertion of the device by sliding in the hollow element. Such a positioning mode of the device is however not always compatible with the mounting requirements of motor vehicles and causes significant mounting difficulties.
Les éléments creux de carrosserie comprennent généralement au moins deux parties en vis a vis, associées entre elles par soudage de sorte à former l'élément. Pour des raisons de facilité de montage, il peut être souhaité de positionner le dispositif alors que les parties de l'élément ne sont pas encore assemblées. Le procédé de montage consiste alors à disposer le dispositif dans une des parties, puis à associer l'autre partie sur la première, de sorte a obtenir un élément incorporant le dispositif. The hollow bodywork elements generally comprise at least two parts facing each other, joined together by welding so as to form the element. For reasons of ease of assembly, it may be desired to position the device while the parts of the element are not yet assembled. The mounting method then consists of arranging the device in one of the parts and then associating the other part with the first one, so as to obtain an element incorporating the device.
Le dispositif exposé dans le document FR-04 03243 ne permet pas son positionnement satisfaisant dans l'élément creux par ce type de procédé. En effet, le dispositif ne comprend pas de moyens permettant son maintien avant io association des parties d'élément entre elles. II en résulte un risque de mauvais positionnement du dispositif dans l'élément et par conséquent une efficacité de protection acoustique dégradée. The device disclosed in document FR-04 03243 does not allow its satisfactory positioning in the hollow element by this type of process. Indeed, the device does not include means for maintaining it before associating the element parts together. This results in a risk of poor positioning of the device in the element and therefore a deteriorated acoustic protection effectiveness.
L'invention a pour but de proposer un dispositif simple, compatible avec les 15 exigences de montage décrites ci-dessus. The object of the invention is to provide a simple device compatible with the mounting requirements described above.
A cet effet, et selon un premier aspect, l'invention propose un dispositif de remplissage d'un volume d'un élément creux de carrosserie de véhicule automobile, en vue d'assurer une protection acoustique, le dispositif comprenant: É deux cloisons (3a, 3b) transversales associées respectivement aux parties extrêmes dudit corps, lesdites cloisons étant agencées pour permettre le maintien dudit corps à distance dudit élément et pour définir, à l'intérieur du volume de l'élément creux, un volume de remplissage fermé entre elles, É chacune desdites cloisons étant pourvue d'au moins un moyen d'association (4a, 4b) à l'élément creux (6). For this purpose, and according to a first aspect, the invention proposes a device for filling a volume of a hollow element of a motor vehicle body, in order to provide acoustic protection, the device comprising: E two partitions ( 3a, 3b) respectively associated with the end portions of said body, said partitions being arranged to allow said body to be held away from said element and to define, within the volume of the hollow element, a closed filling volume between them , E each of said partitions being provided with at least one association means (4a, 4b) with the hollow element (6).
Les cloisons étant associées à l'élément creux, lorsque le dispositif est monté sur l'élément, et définissant un volume de remplissage fermé entre elles, elles permettent de contenir l'expansion de la mousse dans le volume défini par les parois internes de l'élément et par les cloisons, de sorte à obturer l'élément de façon étanche en assurant une isolation et un amortissement acoustique. The partitions being associated with the hollow element, when the device is mounted on the element, and defining a closed filling volume between them, they can contain the expansion of the foam in the volume defined by the internal walls of the element and by the partitions, so as to seal the element sealingly providing insulation and acoustic damping.
Selon un deuxième aspect, l'invention concerne une carrosserie de véhicule automobile comprenant au moins un élément creux dans lequel un dispositif, tel que décrit ci-dessus, est disposé, le corps du dispositif étant expansé de sorte à former une mousse souple remplissant sensiblement l'espace défini par les parois internes de l'élément et par les cloisons, de sorte à obturer l'élément de façon étanche en assurant une isolation et surtout un amortissement acoustique permettant d'empêcher les vibrations de se propager dans l'élément. According to a second aspect, the invention relates to a motor vehicle body comprising at least one hollow element in which a device, as described above, is disposed, the body of the device being expanded so as to form a flexible foam substantially filling the space defined by the internal walls of the element and by the partitions, so as to seal the element sealingly providing insulation and especially acoustic damping to prevent vibrations from spreading in the element.
D'autres particularités et avantages de l'invention apparaîtront dans la io description qui suit, faite en référence aux figures jointes dans lesquelles: la figure 1 est une représentation schématique éclatée, en perspective, d'un dispositif selon l'invention et d'une portion de l'élément auquel il est destiné à être associé, le corps en mousse n'étant pas expansé. Other features and advantages of the invention will appear in the following description, with reference to the appended figures in which: FIG. 1 is an exploded diagrammatic representation, in perspective, of a device according to the invention and of a portion of the element to which it is intended to be associated, the foam body not being expanded.
É La figure 2 est une représentation schématique éclatée, en perspective, du dispositif de la figure 1, selon une variante de réalisation, le corps en mousse n'étant pas expansé. Figure 2 is an exploded schematic representation, in perspective, of the device of Figure 1, according to an alternative embodiment, the foam body is not expanded.
É la figure 3 est une représentation schématique en coupe longitudinale d'un élément creux dans lequel le dispositif selon l'invention est disposé, 20 le corps en mousse étant expansé. 3 is a diagrammatic representation in longitudinal section of a hollow element in which the device according to the invention is disposed, the foam body being expanded.
En référence à la figure 1, on décrit à présent un dispositif de remplissage 1 d'un volume d'un élément creux 6 de carrosserie de véhicule automobile, comprenant deux parties 6a, 6b destinées à être associées entre elles, notamment par soudure. Referring to Figure 1, there is now described a filling device 1 of a volume of a hollow element 6 of a motor vehicle body, comprising two parts 6a, 6b intended to be associated with each other, in particular by welding.
Le dispositif comprend: É un corps allongé 2 à base d'un matériau précurseur de mousse souple, É des moyens de maintien dudit corps à l'intérieur de l'élément 6 creux, lesdits moyens de maintien comprenant: É deux cloisons transversales 3a, 3b associées aux parties extrêmes du corps 2, lesdites cloisons étant agencées pour permettre le maintien dudit corps à distance dudit élément et pour définir, à l'intérieur du volume de l'élément creux, un volume de remplissage fermé entre elles, É chacune desdites cloisons étant pourvue d'au moins un moyen d'association 4a, 4b à l'élément creux 6, destiné à être associé à un moyen d'association réciproque 7a, 7b prévu à cet effet dans l'élément 6. The device comprises: E an elongate body 2 based on a flexible foam precursor material, E means for holding said body inside the hollow element 6, said holding means comprising: E two transverse partitions 3a, 3b associated with the end portions of the body 2, said partitions being arranged to allow the maintenance of said body away from said element and to define, within the volume of the hollow element, a closed filling volume between them, E each of said partitions being provided with at least one association means 4a, 4b with the hollow element 6, intended to be associated with a means of mutual association 7a, 7b provided for this purpose in the element 6.
Les cloisons 3a, 3b présentent une forme correspondant sensiblement à celle io de la section d'élément creux 6 qu'elles sont destinées à occuper. C'est-à-dire que leur section correspond sensiblement à celles des zones de l'élément 6, où elles sont destinées à être positionnées. Elles permettent de contenir l'expansion de la mousse dans le volume défini par les parois internes de l'élément 6 et par lesdites cloisons, de sorte à obturer l'élément 6 de façon ls étanche en assurant une isolation et un amortissement acoustique, ceci du fait de la souplesse de la mousse, lorsqu'elle est expansée, et de son caractère sensiblement viscoélastique. The partitions 3a, 3b have a shape substantially corresponding to that of the hollow element section 6 which they are intended to occupy. That is, their section corresponds substantially to those of the zones of the element 6, where they are intended to be positioned. They make it possible to contain the expansion of the foam in the volume defined by the internal walls of the element 6 and by said partitions, so as to seal the element 6 so ls waterproof by providing insulation and acoustic damping, this due to the flexibility of the foam, when expanded, and its substantially viscoelastic character.
Selon une réalisation, un moyen d'association 4a, 4b comprend au moins un clip, issu de matière avec une cloison 3a, 3b, la cloison étant réalisée par injection de matière plastique. Le clip est destiné à être disposé dans un trou 7a, 7b prévu dans l'élément 6, formant moyen d'association réciproque. Un tel agencement permet un montage aisé du dispositif 1 dans l'élément 6 creux, avant assemblage des parties 6a et 6b de l'élément 6. According to one embodiment, an association means 4a, 4b comprises at least one clip, made of material with a partition 3a, 3b, the partition being made by plastic injection. The clip is intended to be arranged in a hole 7a, 7b provided in the element 6, forming means of mutual association. Such an arrangement allows easy assembly of the device 1 in the hollow element 6 before assembly of the parts 6a and 6b of the element 6.
Selon une réalisation, au moins une cloison 3a, 3b comprend au moins un orifice 5a, 5b destiné à permettre l'écoulement de fluides, notamment les fluides utilisés lors de l'opération de peinture du véhicule. According to one embodiment, at least one partition 3a, 3b comprises at least one orifice 5a, 5b intended to allow the flow of fluids, in particular the fluids used during the painting operation of the vehicle.
Afin de permettre un contact optimal entre le corps 2 et l'élément 6, une fois ledit corps expansé, ledit corps peut présenter, avant son expansion, une section sensiblement homothétique à celle du volume de l'élément 6 dans lequel il est destiné à être disposé. In order to allow an optimal contact between the body 2 and the element 6, once said expanded body, said body may have, before its expansion, a section substantially homothetic to that of the volume of the element 6 in which it is intended to to be disposed.
Selon une réalisation, représentée en figure 2, le dispositif 1 comprend en outre une âme 8 formée d'un matériau sensiblement rigide, le corps 2 étant disposé autour de ladite âme. Les cloisons 3a, 3b sont associées à ladite âme. Ceci, permet notamment, lorsque le corps 2 présente une longueur importante, d'éviter son fléchissement et le risque d'un contact avec l'élément 6 avant expansion de la mousse. According to one embodiment, shown in Figure 2, the device 1 further comprises a core 8 formed of a substantially rigid material, the body 2 being disposed around said core. The partitions 3a, 3b are associated with said core. This allows, in particular, when the body 2 has a long length, to avoid sagging and the risk of contact with the element 6 before expansion of the foam.
Selon la réalisation représentée, les cloisons 3a, 3b sont formées d'une pièce avec l'âme 8, notamment par injection de matière plastique. Le corps 2 lo comprend une tranchée longitudinale 9 agencée pour permettre de l'associer à ladite âme par emboîtement (selon la flèche de la figure 2). According to the embodiment shown, the partitions 3a, 3b are formed integrally with the core 8, in particular by injection of plastic material. The body 2 lo comprises a longitudinal trench 9 arranged to allow to associate with said soul by interlocking (according to the arrow of Figure 2).
Selon une réalisation, le dispositif 1 comprend un film extensible recouvrant, au moins partiellement le corps 2, ceci afin d'empêcher la mousse en phase ls d'expansion de passer à travers d'éventuels évidements, pratiqués dans l'élément 6, notamment à des fins d'allègement. According to one embodiment, the device 1 comprises an extensible film covering, at least partially, the body 2, in order to prevent the foam in phase ls of expansion to pass through any recesses, made in the element 6, in particular for relief purposes.
Le matériau précurseur de mousse peut être expansible à la chaleur, et particulièrement à la température de cuisson des mastics ou peinture de la carrosserie automobile, ce qui permet de réaliser son expansion lors de cette phase de fabrication du véhicule. The foam precursor material can be expandable to heat, and particularly to the firing temperature of sealants or paint of the automobile body, which allows for its expansion during this phase of manufacture of the vehicle.
La figure 3 représente en coupe un élément 6 creux dans lequel un dispositif 1 est disposé, le corps 2 du dispositif étant expansé de sorte à former une mousse souple obturant l'élément 6 de façon étanche, en assurant une isolation et un amortissement acoustique. 3 shows in section a hollow element 6 in which a device 1 is disposed, the body 2 of the device being expanded so as to form a flexible foam sealing the element 6 sealingly, providing insulation and acoustic damping.
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0503434A FR2884200B1 (en) | 2005-04-06 | 2005-04-06 | DEVICE FOR FILLING A HOLLOW ELEMENT COMPRISING WALLS OF ASSOCIATION AUDIT ELEMENT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0503434A FR2884200B1 (en) | 2005-04-06 | 2005-04-06 | DEVICE FOR FILLING A HOLLOW ELEMENT COMPRISING WALLS OF ASSOCIATION AUDIT ELEMENT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2884200A1 true FR2884200A1 (en) | 2006-10-13 |
| FR2884200B1 FR2884200B1 (en) | 2007-06-29 |
Family
ID=34955034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0503434A Expired - Fee Related FR2884200B1 (en) | 2005-04-06 | 2005-04-06 | DEVICE FOR FILLING A HOLLOW ELEMENT COMPRISING WALLS OF ASSOCIATION AUDIT ELEMENT |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2884200B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008014250A1 (en) * | 2006-07-25 | 2008-01-31 | Zephyros, Inc. | Structural reinforcements |
| WO2009012917A2 (en) * | 2007-07-20 | 2009-01-29 | Zephyros Inc | Improvements in or relating to seating |
| WO2009118232A1 (en) * | 2008-02-27 | 2009-10-01 | Sika Technology Ag | Baffle |
| US8966766B2 (en) | 2007-10-25 | 2015-03-03 | Zephyros, Inc. | Reinforcement structure and method employing bulkheads |
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|---|---|---|---|---|
| FR2762894A1 (en) * | 1997-07-21 | 1998-11-06 | Henkel Corp | Reinforced tube structure for vehicle applications |
| US6263635B1 (en) * | 1999-12-10 | 2001-07-24 | L&L Products, Inc. | Tube reinforcement having displaceable modular components |
| EP1134126A2 (en) * | 2000-03-17 | 2001-09-19 | Sika Corporation | Double walled baffle |
| US20010039973A1 (en) * | 2000-01-20 | 2001-11-15 | Honda Giken Kogyo Kabushiki Kaisha | Reinforcement structure of pipe |
-
2005
- 2005-04-06 FR FR0503434A patent/FR2884200B1/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2762894A1 (en) * | 1997-07-21 | 1998-11-06 | Henkel Corp | Reinforced tube structure for vehicle applications |
| US6263635B1 (en) * | 1999-12-10 | 2001-07-24 | L&L Products, Inc. | Tube reinforcement having displaceable modular components |
| US20010039973A1 (en) * | 2000-01-20 | 2001-11-15 | Honda Giken Kogyo Kabushiki Kaisha | Reinforcement structure of pipe |
| EP1134126A2 (en) * | 2000-03-17 | 2001-09-19 | Sika Corporation | Double walled baffle |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10589795B2 (en) | 2006-07-25 | 2020-03-17 | Zephyros, Inc. | Structural reinforcements |
| WO2008014250A1 (en) * | 2006-07-25 | 2008-01-31 | Zephyros, Inc. | Structural reinforcements |
| US7913467B2 (en) | 2006-07-25 | 2011-03-29 | Zephyros, Inc. | Structural reinforcements |
| US8127506B2 (en) | 2006-07-25 | 2012-03-06 | Zephyros, Inc. | Structural reinforcements |
| US8449020B2 (en) | 2006-07-25 | 2013-05-28 | Zephyros, Inc. | Structural reinforcements |
| US8656669B2 (en) | 2006-07-25 | 2014-02-25 | Zephyros, Inc. | Structural reinforcements |
| US9415811B2 (en) | 2006-07-25 | 2016-08-16 | Zephyros, Inc. | Structural reinforcements |
| WO2009012917A2 (en) * | 2007-07-20 | 2009-01-29 | Zephyros Inc | Improvements in or relating to seating |
| WO2009012917A3 (en) * | 2007-07-20 | 2009-04-02 | Zephyros Inc | Improvements in or relating to seating |
| US11608131B2 (en) | 2007-10-25 | 2023-03-21 | Zephyros, Inc. | Reinforcement structure and method employing bulkheads |
| US8966766B2 (en) | 2007-10-25 | 2015-03-03 | Zephyros, Inc. | Reinforcement structure and method employing bulkheads |
| US9950759B2 (en) | 2007-10-25 | 2018-04-24 | Zephyros, Inc. | Reinforcement structure and method employing bulkheads |
| WO2009118232A1 (en) * | 2008-02-27 | 2009-10-01 | Sika Technology Ag | Baffle |
| US8293360B2 (en) | 2008-02-27 | 2012-10-23 | Sika Technology Ag | Baffle |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2884200B1 (en) | 2007-06-29 |
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| ST | Notification of lapse |
Effective date: 20091231 |