(19)
(11)EP 2 346 722 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
01.05.2013 Bulletin 2013/18

(21)Application number: 09760632.1

(22)Date of filing:  22.10.2009
(51)Int. Cl.: 
B60R 21/2165  (2011.01)
(86)International application number:
PCT/IT2009/000475
(87)International publication number:
WO 2010/046942 (29.04.2010 Gazette  2010/17)

(54)

SYSTEM FOR BLOCKING THE AESTHETIC LINING ON DASHBOARD OF A VEHICLE ENSURING PROPER OPENING OF THE INTEGRATED AIR BAG DOOR

SYSTEM ZUM BLOCKIEREN DER ZIERVERKLEIDUNG AUF DEM ARMATURENBRETT EINES FAHRZEUGS ZUR GEWÄHRLEISTUNG EINES ORDNUNGSGEMÄSSEN ÖFFNENS DER INTEGRIERTEN AIRBAGTÜR

SYSTÈME POUR BLOQUER LA GARNITURE ESTHÉTIQUE SUR LE TABLEAU DE BORD D'UN VÉHICULE, GARANTISSANT L'OUVERTURE CORRECTE DE LA PORTE D'AIRBAG INTÉGRÉE


(84)Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30)Priority: 24.10.2008 IT RM20080570

(43)Date of publication of application:
27.07.2011 Bulletin 2011/30

(73)Proprietor: Maserati S.P.A.
41100 Modena (IT)

(72)Inventors:
  • CESARETTI, Antonio
    I-41121 Modena (IT)
  • PICIARELLI, Pierluigi
    I-41100 Modena (IT)
  • LAMBERTI, Roberto
    I-41100 Modena (IT)

(74)Representative: Iannone, Carlo Luigi et al
Barzanò & Zanardo Roma S.p.A. Via Piemonte 26
00187 Roma
00187 Roma (IT)


(56)References cited: : 
JP-A- 10 119 683
US-A1- 2003 025 306
US-A1- 2002 121 769
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description


    [0001] The present invention relates to a system for blocking the aesthetic lining of a dashboard, ensuring proper opening of integrated air bag door.

    [0002] More specifically, the invention concerns a system of the above kind permitting ensuring proper opening of integrated air bag door, even with lining having a spongy substrate and synthetic or natural surface layer.

    [0003] US 2003/00253306 A1, which is considered as being representative of the closest prior art, discloses an airbag cover integrated into the surface of an instrument panel wherein the cover is defined by a tear line. A decorative strip is mounted outside of the cover proximate the tear line to hide the presence of mounting bolts.

    [0004] The solution according to the invention can be applied to inner finishing elements (dashboard and panels) with integrated (not visible) air bag and coated with a spongy substrate and synthetic or natural surface layer.

    [0005] At present, all medium-high segment vehicles are provided with passenger side air bag, the opening door of which is integrated within the dashboard shell.

    [0006] In order to permit proper opening of the door, it is usually realized a series of microholes, realized by laser, that, in function of their depth and pitch, make it more or less high the load necessary for opening the same door by the air bag.

    [0007] Said method is particularly applied on dashboards having an integrated air bag door and its main advantage is the possibility of using the same machinery for different applications.

    [0008] Other solutions presently employed for lower productions and with "saddled" dashboards or panels comprises the use of aesthetic stitching with a fragile yarn in order to hide holes passing through the rigid support, thus ensuring the proper opening of the door.

    [0009] However, particularly the first technical solution described in the above is characterized by aesthetic problems when spongy materials are employed as aesthetic lining: in fact, microholes are not passing-through, thus creating a breakage of the foam cells that can be observed from outside due to the local depression.

    [0010] Furthermore, said weakening solution is not sufficient in case synthetic coating materials are employed, such as the lining known by the trade name Benova®.

    [0011] Similar aesthetic problems exist for not-foamed dashboards.

    [0012] Furthermore, another problem is the high industrialization cost for the laser working process (laser machine and specific apparatuses for positioning dashboard - panel), which is expensive for niche applications or small amounts of products.

    [0013] In view of the above, and in order to solve the above mentioned problems, the Applicant has realized a system comprised of a plastics or metallic strip, permitting solving all the above drawbacks.

    [0014] It is therefore specific object of the present invention a system for blocking the aesthetic lining of a dashboard, ensuring proper opening of integrated air bag door, characterized in that it comprises a strip, flush within a channel for opening the door containing air bag, outer with respect to dashboard lining, and provided with at least a tooth entering within the lining, thus ensuring a symmetrical opening of air bag.

    [0015] Preferably, according to the invention, a spongy material layer is provided between said door and said lining, said strip being flush with the channel for breaking said spongy layer.

    [0016] teeth. Still according to the invention said strip provides a plurality of teeth.

    [0017] teeth. Always according to the invention, said strip is coupled by inner screws.

    [0018] Furthermore, according to the invention, it is provided a plurality of strips.

    [0019] The present invention will be now described, for illustrative but not limitative purposes, according to its preferred embodiments, with particular reference to the figures of the enclosed drawings, wherein:

    figure 1 is a perspective view of a dashboard with the system according to the invention;

    figure 2 is a first section view of a system according to the invention; and

    figure 3 is a second section view of the system according to the invention.



    [0020] Observing the enclosed figure, it is observed an embodiment of a system according to the invention providing (figure 1), on a dashboard generically indicated by reference number 1, a lining, on which a strip 2 is applied, that will be described in greater detail in the following.

    [0021] Observing sections of figures 2 and 3, it is observed strip 2, provided with teeth 3, "grasping" the lining 4 of the dashboard 1. Said strip 2 is flush mounted with the door 5.

    [0022] Furthermore, from figures 2 and 3 it is possible observing spongy material thickness 6, air bag guide bracket 7, a channel 8, obtained by milling said spongy material.

    [0023] Said strip (figure 3) is fixed on dashboard 1 by screws 9. As already said, strip 2 is placed flush with the door 5 opening channel 8 and along the contact line has a tooth 3, which is necessary for creating a localised weakening of the lining material 4, permitting obtaining a quick cutting of the same lining (natural or artificial skin).

    [0024] From the above description it is understood that when air bag starts inflating and exerting its pressure against door 5, clean breakage of outer lining 4 occurs, thus preventing asymmetric opening of the same door 5 and air bag pressure increase that can influence performances of the same (not symmetric deployment and longer deployment time).

    [0025] The present invention has been described for illustrative but not limitative purposes, according to its preferred embodiments, but it is to be understood that modifications and/or changes can be introduced by those skilled in the art without departing from the relevant scope as defined in the enclosed claims.


    Claims

    1. System for blocking the aesthetic lining of a dashboard (1), ensuring ensuring proper opening of integrated air bag door (5), characterized in that it comprises a strip (2) flush within a channel (8) for opening the door containing air strip bag, outer with respect to dashboard lining (4), and provided with at least a tooth (3) entering within the lining (4), thus ensuring a symmetrical opening of the air bag door (5).
     
    2. System for blocking the aesthetic lining of a dashboard (1) according to claim 1, characterized in that a spongy material layer (6) is provided between said door (5) and said lining (4) said (2) being flush with the strip channel (8) for breaking said spongy layer (6).
     
    3. System for blocking the aesthetic lining of a dashboard (1) according to one of the preceding claims, characterized in that said strip (2) provides a plurality of teeth (3).
     
    4. System for blocking the aesthetic lining of a dashboard (1) according to one of the preceding claims, characterized in that said (2) strip is coupled by inner screw (9).
     
    5. System for blocking the aesthetic lining of a dashboard (1) according to one of the preceding claims, characterized in that it is provided a plurality of strips (2).
     


    Ansprüche

    1. System zum Versperren der Zierverkleidung eines Armaturenbretts (1), das das ordnungsgemäße Öffnen einer integrierten Airbagklappe (5) gewährleistet, dadurch gekennzeichnet, dass es einen Streifen (2) umfasst, der fluchtrecht innerhalb eines Kanals (8) zum Öffnen der Klappe, die den Airbag enthält, außen in Bezug auf die Armaturenbrettverkleidung (4) ist, und der mit wenigstens einem Zahn (3), der in die Verkleidung (4) eintritt, versehen ist und somit ein symmetrisches Öffnen der Airbagklappe (5) gewährleistet.
     
    2. System zum Versperren der Zierverkleidung eines Armaturenbretts (1) nach Anspruch 1, dadurch gekennzeichnet, dass zwischen der Klappe (5) und der Verkleidung (4) eine schwammartige Materialschicht (6) bereitgestellt ist, wobei der Streifen (2) mit dem Kanal (8) fluchtrecht ist, um die schwammartige Schicht (6) zu zerbrechen.
     
    3. System zum Versperren der Zierverkleidung eines Armaturenbretts (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Steifen (2) eine Vielzahl von Zähnen (3) bereitstellt.
     
    4. System zum Versperren der Zierverkleidung eines Armaturenbretts (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Streifen (2) durch Innenschrauben (9) verbunden ist.
     
    5. System zum Versperren der Zierverkleidung eines Armaturenbretts (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es mit einer Vielzahl von Streifen (2) versehen ist.
     


    Revendications

    1. Système pour le blocage du revêtement esthétique d'un tableau de bord (1), assurant une ouverture correcte de la porte d'airbag intégré (5), caractérisé en ce qu'il comprend une bande (2), située au même niveau qu'un canal (8) pour l'ouverture de la porte contenant l'airbag, à l'extérieur par rapport au revêtement (4) du tableau de bord, et pourvue d'au moins une dent (3) pénétrant dans le revêtement (4), ce qui garantit une ouverture symétrique de la porte d'airbag (5).
     
    2. Système pour le blocage du revêtement esthétique d'un tableau de bord (1) selon la revendication 1, caractérisé en ce qu'une couche de matériau éponge (6) est prévue entre ladite porte (5) et ledit revêtement (4), ladite bande (2) étant située au même niveau que le canal (8) pour la rupture de ladite couche de matériau éponge (6).
     
    3. Système pour le blocage du revêtement esthétique d'un tableau de bord (1) selon l'une des revendications précédentes, caractérisé en ce que ladite bande (2) présente une pluralité de dents (3).
     
    4. Système pour le blocage du revêtement esthétique d'un tableau de bord (1) selon l'une des revendications précédentes, caractérisé en ce que ladite bande (2) est couplée par des vis internes (9).
     
    5. Système pour le blocage du revêtement esthétique d'un tableau de bord (1) selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu une pluralité de bandes (2).
     




    Drawing












    REFERENCES CITED IN THE DESCRIPTION



    This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

    Patent documents cited in the description