FR2771457A1 - Noise damping connecting joint for motor vehicle plastics moldings - Google Patents
Noise damping connecting joint for motor vehicle plastics moldings Download PDFInfo
- Publication number
- FR2771457A1 FR2771457A1 FR9714930A FR9714930A FR2771457A1 FR 2771457 A1 FR2771457 A1 FR 2771457A1 FR 9714930 A FR9714930 A FR 9714930A FR 9714930 A FR9714930 A FR 9714930A FR 2771457 A1 FR2771457 A1 FR 2771457A1
- Authority
- FR
- France
- Prior art keywords
- contact
- motor vehicle
- coating
- noise
- surface coating
- 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
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 10
- 229920003023 plastic Polymers 0.000 title claims abstract description 10
- 238000000465 moulding Methods 0.000 title abstract 5
- 238000013016 damping Methods 0.000 title 1
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003973 paint Substances 0.000 claims abstract description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 4
- 239000004743 Polypropylene Substances 0.000 claims abstract description 3
- -1 polypropylene Polymers 0.000 claims abstract description 3
- 229920001155 polypropylene Polymers 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 10
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 4
- 230000003071 parasitic effect Effects 0.000 description 3
- 229920005372 Plexiglas® Polymers 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
- B60K35/60—Instruments characterised by their location or relative disposition in or on vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
La présente invention se rapporte à un dispositif anti-bruit d'assemblage de deux éléments en matière plastique. The present invention relates to an anti-noise device for assembling two plastic elements.
Afin d'assembler deux éléments en matière plastique, il convient de bien choisir le couple de matières en contact car certaines matières plastiques présentent l'inconvénient d'engendrer des bruits parasites, du type grincements, lorsqu'elles sont en contact les unes sur les autres, et à l'inverse d'autres sont silencieuses. In order to assemble two plastic elements, it is advisable to choose the couple of materials in contact because certain plastics have the disadvantage of generating parasitic noises, of the squeaking type, when they are in contact with each other. others, and conversely others are silent.
II s'avère que les couples de matières incompatibles ne peuvent pas toujours être évités, notamment dans le domaine des véhicules automobiles, pour des raisons économiques ou encore de propriétés mécaniques. It turns out that the pairs of incompatible materials cannot always be avoided, in particular in the field of motor vehicles, for economic reasons or else for mechanical properties.
Parfois, le choix des matières est compatible mais pour des raisons esthétiques un revêtement de surface est interposé sur l'une des matières, ce qui entraîne alors également un bruit parasite. Sometimes the choice of materials is compatible, but for aesthetic reasons a surface coating is interposed on one of the materials, which then also causes parasitic noise.
Dans de telles conditions, I'une des solutions connues consiste à souder les éléments entre eux de manière à
Interdire tout mouvement relatif d'un élément par rapport à l'autre qui pourrait engendrer un bruit. Cependant, une telle solution a pour inconvénients d'une part d'être coûteuse et d'autre part d'avoir un assemblage indémontable.Under such conditions, one of the known solutions consists in welding the elements together so as to
Prohibit any relative movement of one element with respect to the other which could generate noise. However, such a solution has the disadvantages on the one hand of being expensive and on the other hand of having a non-removable assembly.
On connaît également la solution consistant dans le cas des bruits dus au revêtement de surface, à ne pas revêtir les zones en contact de ce revêtement. Or, il s'avère qu'une telle solution est efficace mais coûteuse. There is also known the solution consisting in the case of noises due to the surface coating, of not coating the areas in contact with this coating. However, it turns out that such a solution is effective but expensive.
L'invention a pour but de remédier aux inconvénients mentionnés ci-dessus en proposant un dispositif anti-bruit d'assemblage de deux éléments en matière plastique dont l'un est pourvu sur l'une de ses surfaces en contact d'un revêtement de surface, qui soit peu coûteux et particulièrement simple à réaliser. The invention aims to remedy the drawbacks mentioned above by providing an anti-noise device for assembling two plastic elements, one of which is provided on one of its surfaces in contact with a coating of surface, which is inexpensive and particularly simple to produce.
A cet effet, I'invention a pour objet un dispositif anti-bruit d'assemblage de façon démontable, du type clippage ou vissage, de deux éléments réalisés dans des matières plastiques qui ont la caractéristique d'être silencieuses lorsqu'elles sont en contact, dont l'un est pourvu sur l'une de ses surfaces en contact avec l'autre élément d'un revêtement de surface, caractérisé en ce que la surface de l'autre élément qui est en contact avec le revêtement est abrasive. To this end, the invention relates to an anti-noise device for dismountably assembling, of the clipping or screwing type, two elements made of plastic materials which have the characteristic of being silent when they are in contact , one of which is provided on one of its surfaces in contact with the other element with a surface coating, characterized in that the surface of the other element which is in contact with the coating is abrasive.
Selon une caractéristique avantageuse de l'invention, ladite surface abrasive est réalisée par grainage du moule d'injection de l'élément. According to an advantageous characteristic of the invention, said abrasive surface is produced by graining the injection mold of the element.
Selon une autre caractéristique avantageuse de l'invention, I'un des éléments est réalisé en polypropylène et l'autre est réalisé en polyméthacrylate de méthyle;
Selon encore une autre caractéristique avantageuse de l'invention, le revêtement de surface est de la peinture acrylique.According to another advantageous characteristic of the invention, one of the elements is made of polypropylene and the other is made of polymethyl methacrylate;
According to yet another advantageous characteristic of the invention, the surface coating is acrylic paint.
Les caractéristiques de l'invention mentionnées ci-dessus, ainsi que d'autres, apparaîtront plus clairement à la lecture de la description suivante d'un exemple de réalisation en se référant aux dessins annexés sur lesquels
- la figure 1, est une représentation schématique, en coupe longitudinale, d'un combiné de tableau de bord d'un véhicule automobile comportant un dispositif selon la présente invention et,
- la figure 2, est une vue à plus grande échelle de la zone
A de la figure 1.The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment with reference to the accompanying drawings in which
FIG. 1 is a schematic representation, in longitudinal section, of a dashboard combination of a motor vehicle comprising a device according to the present invention and,
- Figure 2, is an enlarged view of the area
A in Figure 1.
On a représenté à la figure 1, un combiné de tableau de bord d'un véhicule automobile qui est constitué, de manière classique, d'une part d'un rehaut i formant un évidement la, dans lequel est disposée au moins une aiguille d'indication 5 et qui est pourvue sur au moins une de ses surfaces 3 d'un revêtement de surface 4, du type peinture acrylique et d'autre part d'une glace 2 qui est assemblée de façon démontable au rehaut 1 par l'intermédiaire d'au moins un clip 6 de montage solidaire de la glace 2 et qui est apte a être engagée respectivement dans un trou 7 prévu sur le rehaut 1. There is shown in Figure 1, a dashboard assembly of a motor vehicle which is constituted, in a conventional manner, on the one hand of a flange i forming a recess la, in which is arranged at least one needle d indication 5 and which is provided on at least one of its surfaces 3 with a surface coating 4, of the acrylic paint type and on the other hand with a glass 2 which is assembled in a removable manner at the flange 1 by means of at least one mounting clip 6 secured to the glass 2 and which is capable of being engaged respectively in a hole 7 provided on the flange 1.
On notera que de préférence, le rehaut 1 et la glace 2 sont respectivement réalisés en propyléne et en polyméthacrylate de méthyle, désignée généralement par le terme Plexiglas, formant ainsi un couple de matière compatible, c'est-à-dire n'engendrant pas de bruit lorsqu'ils sont en contact. It will be noted that preferably, the flange 1 and the glass 2 are respectively made of propylene and polymethyl methacrylate, generally designated by the term Plexiglas, thus forming a pair of compatible material, that is to say not generating noise when in contact.
Le rehaut i étant pourvu d'un revêtement de surface 4 de manière à donner un aspect esthétique agréable au rehaut 1, c'est ce revêtement 4 qui est en contact avec la glace 2, créant ainsi un couple de matières bruyant. The flange i being provided with a surface coating 4 so as to give a pleasing aesthetic appearance to the flange 1, it is this coating 4 which is in contact with the glass 2, thus creating a couple of noisy materials.
Selon la présente invention, un dispositif anti-bruit d'assemblage du rehaut avec la glace est prévu sur cette dernière de manière à éviter les bruits parasites créés par le contact du revêtement avec la glace. According to the present invention, an anti-noise device for assembling the flange with the glass is provided on the latter so as to avoid parasitic noise created by the contact of the coating with the glass.
Ce dispositif anti-bruit 8 est constitué, comme visible à la figure 2, par la réalisation d'une surface abrasive 2a sur la glace dans les différentes zones ou celle-ci est en contact avec le revêtement de surface 4 prévu sur le rehaut 1. This anti-noise device 8 is constituted, as visible in FIG. 2, by the production of an abrasive surface 2a on the ice in the different zones where it is in contact with the surface coating 4 provided on the flange 1 .
Avantageusement, cette surface abrasive 2a est réalisée par grainage du moule d'injection de la glace 2, ce qui n'engendre pas de surcoût de cet élément. Advantageously, this abrasive surface 2a is produced by graining the ice injection mold 2, which does not generate any additional cost for this element.
On notera que la surface abrasive peut être constituée, dans une variante de stries. It will be noted that the abrasive surface can be formed, in a variant of striations.
La glace 2 étant munie de surfaces abrasives 2a, lors du montage et au bout de quelques frottements, dus notamment aux différentes vibrations du moteur à combustion du véhicule automobile en fonctionnement, celle-ci dégrade le revêtement de surface 4 du rehaut 1, de sorte que le contact s'effectue directement entre les matiéres plastiques du rehaut et de la glace qui ont la particularité de former un couple de matière silencieux. The glass 2 being provided with abrasive surfaces 2a, during assembly and after some friction, due in particular to the different vibrations of the combustion engine of the motor vehicle in operation, this degrades the surface coating 4 of the flange 1, so that the contact takes place directly between the plastic materials of the flange and the glass which have the particularity of forming a couple of silent material.
On comprend à la lecture de la description ci-dessus que le dispositif anti-bruit d'assemblage de la présente invention est particulièrement simple à réaliser et peu coûteux. It will be understood from reading the description above that the anti-assembly noise device of the present invention is particularly simple to produce and inexpensive.
Bien entendu, ce dispositif peut s'appliquer à d'autres éléments en matières plastiques que ceux décrits. Of course, this device can be applied to other plastic elements than those described.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9714930A FR2771457B1 (en) | 1997-11-27 | 1997-11-27 | ANTI-NOISE DEVICE FOR JOINING TWO ELEMENTS OF PLASTIC MATERIAL |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9714930A FR2771457B1 (en) | 1997-11-27 | 1997-11-27 | ANTI-NOISE DEVICE FOR JOINING TWO ELEMENTS OF PLASTIC MATERIAL |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2771457A1 true FR2771457A1 (en) | 1999-05-28 |
| FR2771457B1 FR2771457B1 (en) | 1999-12-31 |
Family
ID=9513877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9714930A Expired - Fee Related FR2771457B1 (en) | 1997-11-27 | 1997-11-27 | ANTI-NOISE DEVICE FOR JOINING TWO ELEMENTS OF PLASTIC MATERIAL |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2771457B1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0676307A1 (en) * | 1994-04-11 | 1995-10-11 | Magneti Marelli France | Improvements in dashboards for vehicles, especially motor vehicles |
| FR2741033A1 (en) * | 1995-11-09 | 1997-05-16 | Sagem | DASHBOARD COMPRISING A WINDOW CLIPSED ON THE UPHOLSTERY |
-
1997
- 1997-11-27 FR FR9714930A patent/FR2771457B1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0676307A1 (en) * | 1994-04-11 | 1995-10-11 | Magneti Marelli France | Improvements in dashboards for vehicles, especially motor vehicles |
| FR2741033A1 (en) * | 1995-11-09 | 1997-05-16 | Sagem | DASHBOARD COMPRISING A WINDOW CLIPSED ON THE UPHOLSTERY |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2771457B1 (en) | 1999-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |