FR2767763A1 - Safety air bag with stitched assembly - Google Patents
Safety air bag with stitched assembly Download PDFInfo
- Publication number
- FR2767763A1 FR2767763A1 FR9710783A FR9710783A FR2767763A1 FR 2767763 A1 FR2767763 A1 FR 2767763A1 FR 9710783 A FR9710783 A FR 9710783A FR 9710783 A FR9710783 A FR 9710783A FR 2767763 A1 FR2767763 A1 FR 2767763A1
- Authority
- FR
- France
- Prior art keywords
- bag
- assembly
- strip
- inflatable safety
- seams
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/235—Inflatable members characterised by their material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R2021/23123—Heat protection panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/235—Inflatable members characterised by their material
- B60R2021/23571—Inflatable members characterised by their material characterised by connections between panels
- B60R2021/23576—Sewing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/235—Inflatable members characterised by their material
- B60R2021/23571—Inflatable members characterised by their material characterised by connections between panels
- B60R2021/23595—Sealing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
Description
La présente invention concerne les sacs de sécurité gonflables, en particulier équipant les véhicules automobiles. The present invention relates to inflatable safety bags, in particular fitted to motor vehicles.
Les sacs de sécurité gonflables traditionnels sont réalisés par assemblage sur elle-même d'une pièce de tissu imperméable au gaz par au moins une couture périphérique. Ces sacs connus présentent l'inconvénient que, lorsque le sac se déploie en étant gonflé par du gaz sous pression, la paroi du sac est soumise à une contrainte qui tend à agrandir les trous de couture, en facilitant des pertes de gaz vers l'extérieur du sac, en ne permettant alors pas de pouvoir utiliser tous les gaz générés par le système pyrotechnique, ou autre, pour gonfler le sac. Traditional inflatable safety bags are made by assembling on itself a piece of fabric impermeable to gas by at least one peripheral seam. These known bags have the disadvantage that, when the bag deploys while being inflated by pressurized gas, the wall of the bag is subjected to a stress which tends to enlarge the seam holes, facilitating gas losses towards the outside of the bag, while not allowing to be able to use all the gases generated by the pyrotechnic system, or other, to inflate the bag.
Un autre inconvénient réside dans le fait que les gaz chauds générés par le dispositif pyrotechnique, peuvent tendre à brûler le tissu du sac, en affaiblissant en particulier les coutures de celui-ci. Another drawback lies in the fact that the hot gases generated by the pyrotechnic device can tend to burn the fabric of the bag, in particular weakening the seams of the latter.
La présente invention a pour objet de remédier aux inconvénients mentionnés ci-dessus des sacs de sécurité gonflables conventionnels et elle propose à cet effet la réalisation d'un sac de sécurité gonflable dont la ou les coutures d'assemblage présentent, lors du déploiement du sac, une totale étanchéité au gaz, et dont le tissu se trouve protégé de la brûlure du gaz. The object of the present invention is to remedy the drawbacks mentioned above of conventional inflatable safety bags and for this purpose it proposes the production of an inflatable safety bag, the assembly stitching (s) of which exhibit, during deployment of the bag. , a total gas tightness, and the fabric of which is protected from gas burns.
Le sac de sécurité gonflable selon l'invention, dont la paroi est fermée sur elle-même, selon le périmètre du sac, par au moins mne couture d'assemblage, se caractérise par au moins une bande de tissu de longueur équivalente au périmètre du sac, la ou les dites bandes étant fixées sur la face intérieure de la dite paroi en recouvrant de façon étanche la ou les dites coutures d'assemblage, afin de protéger le tissu du sac au niveau de cette ou de ces coutures. The inflatable safety bag according to the invention, the wall of which is closed on itself, along the perimeter of the bag, by at least one stitching for assembly, is characterized by at least one strip of fabric of length equivalent to the perimeter of the bag. bag, the said band or bands being fixed on the inner face of the said wall by sealingly covering the said assembly stitching (s), in order to protect the fabric of the bag at the level of this or these seams.
On peut ainsi, selon l'invention, utiliser une seule bande de protection rabattue selon un profil en U, qui recouvre les bords en regard du sac à assembler et 5 dont les ailes opposées sont cousues chacune à un des
bords du sac.It is thus possible, according to the invention, to use a single protective strip folded down according to a U-shaped profile, which covers the edges facing the bag to be assembled and 5 whose opposite wings are each sewn to one of the
edges of the bag.
On peut aussi, en variante, utiliser deux bandes
de protection qui recouvrent chacune l'un des bords en
regard du sac.Alternatively, two strips can also be used
of protection which each cover one of the edges in
look of the bag.
La fixation de la dite bande de protection, ou des
bandes de protection s'effectue par une couture
d'assemblage de la paroi du sac.The fixing of said protective strip, or
protective strips are made by sewing
assembly of the wall of the bag.
Pour bien faire comprendre l'invention on en
décrira ci-après, à titre d'exemples sans caractère
limitatif, des formes de réalisation préférées en
référence au dessin schématique annexé dans lequel
la figure 1 est une vue schématique en coupe
transversale montrant un sac de sécurité gonflable
retourné dont la couture d'assemblage unique est
protégée selon la présente invention ;
la figure 2 est une vue analogue montrant un sac
de sécurité gonflable retourné à deux coutures
d'assemblage, protégé par une bande selon la présente
invention
les figures 3 et 4 sont des vues analogues d'un
sac de sécurité gonflable retourné, à une et deux
coutures d'assemblage respectivement, et utilisant deux
bandes de protection selon l'invention ;
les figures 5 et 6 sont des vues analogues d'un
sac de sécurité gonflable à plat, à une et deux coutures
d'assemblage respectivement, utilisant deux bandes de
protection selon l'invention ;
les figures 7 et 8 sont des vues analogues d'un
sac de sécurité gonflable à plat, à une et deux coutures
d'assemblage respectivement, utilisant une seule bande
de protection selon l'invention ; et
les figures 9 et 10 sont des vues analogues aux
figures 7 et 8, mais avec une variante du système de
protection à une seule bande selon l'invention.To make the invention clear, we
will describe below, as examples without character
limiting, preferred embodiments in
reference to the attached schematic drawing in which
Figure 1 is a schematic sectional view
cross showing an inflatable safety bag
turned over whose unique assembly seam is
protected according to the present invention;
Figure 2 is a similar view showing a bag
inflatable safety jacket with two seams
assembly, protected by a strip according to this
invention
Figures 3 and 4 are similar views of a
one and two side inflated safety bag
stitching together respectively, and using two
protective tapes according to the invention;
Figures 5 and 6 are similar views of a
flat airbag, one and two seams
assembly respectively, using two strips of
protection according to the invention;
Figures 7 and 8 are similar views of a
flat inflatable safety bag, one and two seams
assembly respectively, using a single strip
protection according to the invention; and
Figures 9 and 10 are views similar to
Figures 7 and 8, but with a variant of the
single band protection according to the invention.
En référence à la figure 1, on a représenté en 1
la paroi d'un sac de sécurité gonflable, réalisée en un
tissu étanche au gaz, et retourné pour que ses extrémités en regard, destinées à être assemblées pour réaliser la fermeture du sac, soient disposées vers l'intérieur du sac.Referring to Figure 1, there is shown in 1
the wall of an inflatable safety bag, made in one
gas-tight fabric, and turned over so that its facing ends, intended to be assembled to close the bag, are arranged towards the inside of the bag.
Selon l'invention, du côté interne de la paroi 1, une bande de tissu 2 repliée selon un profil en U est placée pour recouvrir la zone d'assemblage de la paroi 1 sur le périmètre du sac, et est cousue dans cette position par une couture 3 assurant l'assemblage de la paroi 1 et la fixation de chaque aile de la bande 2 au bord d'assemblage en regard du sac. According to the invention, on the internal side of the wall 1, a strip of fabric 2 folded along a U-shaped profile is placed to cover the assembly area of the wall 1 on the perimeter of the bag, and is sewn in this position by a seam 3 ensuring the assembly of the wall 1 and the fixing of each wing of the strip 2 to the assembly edge facing the bag.
Le fonctionnement du sac de sécurité gonflable est alors le suivant. The operation of the airbag is then as follows.
Le sac étant plié à l'intérieur de son boîtier (non représenté), l'invention se trouve dans son état passif, la bande de tissu 2 étant fixée sur la couture 3. The bag being folded inside its case (not shown), the invention is in its passive state, the strip of fabric 2 being fixed on the seam 3.
Lors du déclenchement du sac de sécurité gonflable, le couvercle du boîtier s'ouvre et le sac se déploie, le gaz arrivant sur les bordures du sac. When the inflatable safety bag is triggered, the housing cover opens and the bag deploys, the gas arriving on the edges of the bag.
Le gaz est alors en contact en premier avec la bande de tissu 2. Comme celle-ci n'est soumise à aucune contrainte, les trous de la couture de cette bande 2 ne s'agrandissent pas. Les gaz ne traversent alors pas la bande 2, et n'atteignent donc pas le tissu du sac. The gas is then in first contact with the strip of fabric 2. Since the latter is not subjected to any stress, the holes in the seam of this strip 2 do not enlarge. The gases then do not pass through the strip 2, and therefore do not reach the fabric of the bag.
On comprend donc que, grâce à la bande 2 qui protège la couture d'assemblage 3, on évite ainsi toute perte de gaz vers l'extérieur par la couture 3, ce qui permet d'utiliser tout le gaz généré par le dispositif pyrotechnique (ou autre) pour gonfler le sac. It is therefore understood that, thanks to the strip 2 which protects the assembly seam 3, this therefore avoids any loss of gas to the outside by the seam 3, which makes it possible to use all the gas generated by the pyrotechnic device ( or other) to inflate the bag.
Dans l'exemple de réalisation de la figure 2, on a représenté en 5 la paroi du sac de sécurité gonflable du type retourné, et en 6 la couture d'assemblage intérieure réalisant la fermeture sur elle-même de la paroi 5 selon un périmètre du sac, cette couture intérieure 6 se trouvant protégée des gaz chauds par une bande de tissu 7, identique à la bande 2 de la figure 1, qui recouvre la couture intérieure 6 sur tout le périmètre du sac et qui est fixée par la couture extérieure 8. In the embodiment of Figure 2, there is shown in 5 the wall of the inflatable safety bag of the inverted type, and in 6 the interior assembly seam making the closure on itself of the wall 5 along a perimeter of the bag, this inner seam 6 being protected from hot gases by a strip of fabric 7, identical to the strip 2 of FIG. 1, which covers the inner seam 6 over the entire perimeter of the bag and which is fixed by the outer seam 8.
En référence aux figures 3 et 4, on a représenté un sac de sécurité gonflable 10 du type retourné, à une couture d'assemblage 11 (figure 3) ou à deux coutures d'assemblage 11' et 11" (figure 4), sur chaque bord d'assemblage duquel est appliquée, vers l'intérieur du sac, une bande de protection 12,13 qui est fixée à ce bord par la couture 11 ou les coutures 11',11. With reference to FIGS. 3 and 4, an inflatable safety bag 10 of the inverted type has been shown, with an assembly seam 11 (FIG. 3) or with two assembly seams 11 'and 11 "(FIG. 4). each assembly edge from which is applied, towards the inside of the bag, a protective strip 12, 13 which is fixed to this edge by the seam 11 or the seams 11 ′, 11.
Aux figures 5 et 6, on voit un sac de sécurité gonflable 14 du type à plat, à une couture d'assemblage 15 (figure 5) ou à deux coutures d'assemblage 15' et 15" (figure 6), dont les bords d'assemblage sont protégés, chacun sur sa face intérieure, par une bande 16,17. In FIGS. 5 and 6, an inflatable safety bag 14 of the flat type is seen, with an assembly seam 15 (FIG. 5) or with two assembly seams 15 ′ and 15 "(FIG. 6), the edges of which assembly are protected, each on its inner face, by a band 16,17.
Aux figures 7 et 8, le sac de sécurité gonflable 18 est du type à plat, à une (figure 7) ou deux (figure 8) coutures d'assemblage, dont les bords d'assemblage sont protégés sur leur face intérieure par une bande 19 à profil en U, identique aux bandes 2 et 7 des figures 1 et 2, la partie intermédiaire 20 de la bande 19 se trouvant vers l'intérieur du sac 18. Les figures 9 et 10 sont des variantes des figures 7 et 8, dans lesquelles la partie intermédiaire 20' de la bande protectrice 19' se trouve vers l'extérieur du sac 18. In FIGS. 7 and 8, the inflatable safety bag 18 is of the flat type, with one (FIG. 7) or two (FIG. 8) assembly seams, the assembly edges of which are protected on their inner face by a strip. 19 with a U-shaped profile, identical to the bands 2 and 7 of FIGS. 1 and 2, the intermediate part 20 of the band 19 being towards the inside of the bag 18. FIGS. 9 and 10 are variants of FIGS. 7 and 8, in which the intermediate part 20 ′ of the protective strip 19 ′ is located towards the outside of the bag 18.
On comprendra que la description ci-dessus a été donnée à simple titre d'exemple, sans caractère limitatif, et que des adjonctions ou des modifications constructives pourraient y être-'apportées sans sortir du cadre de la présente invention. It will be understood that the above description has been given by way of example, without limitation, and that additions or constructive modifications could be made without departing from the scope of the present invention.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9710783A FR2767763B1 (en) | 1997-08-29 | 1997-08-29 | INFLATABLE SAFETY BAG WITH ASSEMBLY SEWING PROTECTION BAND |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9710783A FR2767763B1 (en) | 1997-08-29 | 1997-08-29 | INFLATABLE SAFETY BAG WITH ASSEMBLY SEWING PROTECTION BAND |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2767763A1 true FR2767763A1 (en) | 1999-03-05 |
FR2767763B1 FR2767763B1 (en) | 1999-11-19 |
Family
ID=9510588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9710783A Expired - Fee Related FR2767763B1 (en) | 1997-08-29 | 1997-08-29 | INFLATABLE SAFETY BAG WITH ASSEMBLY SEWING PROTECTION BAND |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2767763B1 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1360093A1 (en) * | 2001-02-16 | 2003-11-12 | Breed Automotive Technology, Inc. | Airbag |
GB2389822A (en) * | 2002-06-21 | 2003-12-24 | Autoliv Dev | Airbag with internal seam enclosures |
EP1557324A3 (en) * | 2004-01-22 | 2006-03-22 | Takata Corporation | Curtain airbag |
EP2311692A1 (en) * | 2009-10-15 | 2011-04-20 | Autoliv Development AB | Improvements in or relating to airbags |
DE102012019945A1 (en) | 2011-10-13 | 2013-04-18 | Autoliv Development Ab | Side gas bag unit, has masking tape covering gas space toward edge seam and made of thermoplastic material, which melts due to operation of inflation device or strength loss of inflation device during filling space |
EP2704924A2 (en) * | 2011-05-02 | 2014-03-12 | Nxgen | Side curtain airbag and method and appartus for manufacturing a side curtain airbag |
DE102015005579A1 (en) | 2015-05-04 | 2016-11-10 | Autoliv Development Ab | Airbag with an edge seam and a cover element |
US9862348B2 (en) | 2004-07-26 | 2018-01-09 | Nxgen Technologies, Llc | Side curtain airbag |
US10829079B2 (en) | 2016-08-02 | 2020-11-10 | Joyson Safety Systems Germany Gmbh | Gas bag for an airbag module of a motor vehicle |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10604259B2 (en) | 2016-01-20 | 2020-03-31 | Amsafe, Inc. | Occupant restraint systems having extending restraints, and associated systems and methods |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4530868A (en) * | 1982-12-30 | 1985-07-23 | Toray Silicone Company, Ltd. | Elastomer-coated cloth composite |
US4758294A (en) * | 1987-07-10 | 1988-07-19 | Helmut Storch | Process for the production of a foam backed article |
DE4142884A1 (en) * | 1990-12-27 | 1992-07-02 | Bridgestone Corp | AIRBAG |
-
1997
- 1997-08-29 FR FR9710783A patent/FR2767763B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4530868A (en) * | 1982-12-30 | 1985-07-23 | Toray Silicone Company, Ltd. | Elastomer-coated cloth composite |
US4758294A (en) * | 1987-07-10 | 1988-07-19 | Helmut Storch | Process for the production of a foam backed article |
DE4142884A1 (en) * | 1990-12-27 | 1992-07-02 | Bridgestone Corp | AIRBAG |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1360093A4 (en) * | 2001-02-16 | 2005-02-09 | Breed Automotive Tech | Airbag |
EP1360093A1 (en) * | 2001-02-16 | 2003-11-12 | Breed Automotive Technology, Inc. | Airbag |
GB2389822A (en) * | 2002-06-21 | 2003-12-24 | Autoliv Dev | Airbag with internal seam enclosures |
GB2389822B (en) * | 2002-06-21 | 2005-09-28 | Autoliv Dev | Improvements in or relating to an air-bag |
EP1557324A3 (en) * | 2004-01-22 | 2006-03-22 | Takata Corporation | Curtain airbag |
US9862348B2 (en) | 2004-07-26 | 2018-01-09 | Nxgen Technologies, Llc | Side curtain airbag |
EP2311692A1 (en) * | 2009-10-15 | 2011-04-20 | Autoliv Development AB | Improvements in or relating to airbags |
EP2704924A2 (en) * | 2011-05-02 | 2014-03-12 | Nxgen | Side curtain airbag and method and appartus for manufacturing a side curtain airbag |
EP2704924A4 (en) * | 2011-05-02 | 2014-11-26 | Nxgen Technologies Llc | Side curtain airbag and method and appartus for manufacturing a side curtain airbag |
US10040417B2 (en) | 2011-05-02 | 2018-08-07 | Nxgen Technologies Llc | Side curtain airbag and method and apparatus for manufacturing a side curtain airbag |
DE102012019945A1 (en) | 2011-10-13 | 2013-04-18 | Autoliv Development Ab | Side gas bag unit, has masking tape covering gas space toward edge seam and made of thermoplastic material, which melts due to operation of inflation device or strength loss of inflation device during filling space |
DE102015005579A1 (en) | 2015-05-04 | 2016-11-10 | Autoliv Development Ab | Airbag with an edge seam and a cover element |
US10829079B2 (en) | 2016-08-02 | 2020-11-10 | Joyson Safety Systems Germany Gmbh | Gas bag for an airbag module of a motor vehicle |
Also Published As
Publication number | Publication date |
---|---|
FR2767763B1 (en) | 1999-11-19 |
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