WO2006079414A1 - Sac contenant du gaz pour un module de coussin gonflable - Google Patents

Sac contenant du gaz pour un module de coussin gonflable Download PDF

Info

Publication number
WO2006079414A1
WO2006079414A1 PCT/EP2005/014040 EP2005014040W WO2006079414A1 WO 2006079414 A1 WO2006079414 A1 WO 2006079414A1 EP 2005014040 W EP2005014040 W EP 2005014040W WO 2006079414 A1 WO2006079414 A1 WO 2006079414A1
Authority
WO
WIPO (PCT)
Prior art keywords
airbag
tether
gas bag
outlet opening
volume
Prior art date
Application number
PCT/EP2005/014040
Other languages
German (de)
English (en)
Inventor
Lutz Quarg
Friedrich Reiter
Original Assignee
Daimlerchrysler Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2006079414A1 publication Critical patent/WO2006079414A1/fr

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
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • 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
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • 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
    • B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • B60R2021/23316—Inner seams, e.g. creating separate compartments or used as tethering means
    • 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
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B60R2021/23382—Internal tether means
    • 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
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/276—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means to vent the inflation fluid source, e.g. in case of overpressure

Definitions

  • the invention relates to an airbag of an airbag module according to the preamble of claim 1.
  • Passive safety technology in motor vehicles is known to include airbag devices whose gas bag is inflated abruptly in an accident to protect the inmates displaced by delay forward or sideways from injury.
  • the prior art shows a variety of solutions in which tethers are arranged within the airbag, which influence the propagation direction and the degree of propagation of the airbag.
  • tethers that have tear seams, a gradual deployment of the airbag can be realized.
  • DE 297 07 162 U1 shows an airbag which propagates with an impact section from an outlet opening of the airbag module in the direction of an occupant.
  • tethers are fastened in the outlet direction, which tear when a certain internal pressure prevailing inside the airbag is exceeded, so that the airbag can continue to deploy.
  • the tether arrangement described in DE 297 07 162 U1 causes, in particular, the risk of injury for a so-called "out-of-position" occupant to be reduced since the gas bag in a first deployment stage receives a volume reduced by the tethers inside the gas bag, the tear seams fail so that the gas bag can develop to its full size.
  • It is therefore an object of the invention is to provide an airbag for an airbag module with early retention, in the same time load peaks are reduced.
  • the invention relates to a tether for constricting the gas bag during deployment.
  • the tether which can be extended by at least one longitudinal section when a specific internal pressure prevailing inside the gas bag is exceeded, a greater depth of the gas bag between the outlet opening and the impact section facing the occupant can be achieved even with a smaller gas bag volume.
  • the tether is arranged such that the volume of the airbag while maintaining a minimum distance between the outlet opening of the gas bag and the
  • the occupant facing impact section Exits outlet opening, the occupant facing impact section. That is, by the tether the volume of the airbag to be filled is initially kept small, the special arrangement of the tether from the beginning of the deployment process ensures a minimum distance between the outlet opening of the airbag and the impact section. The occupant can be held back early.
  • the transverse to the direction of action or deployment direction of the airbag arranged tether that limits the initial volume of the airbag.
  • the effective or unfolding direction of the gas bag here is to be understood as the direction which is directed against the expected direction of movement of the occupant in the event of an impact. If the occupant dives into the gas bag in the further course of the impact, tear seams tear, for example, so that lateral volume can be released.
  • a primary object of the invention is to filter out load peaks, that is to keep the load of the occupant at a constant level. This is done by an extension of the tether occurs when a certain internal pressure is exceeded and thereby reduced by increasing the volume of the pressure. As a result, the pressure inside the gas bag is influenced by the tether. When the specific internal pressure prevailing within the gas bag is exceeded, the tether extends for at least one longitudinal section, for example by tearing a tear seam, so that the volume of the tearing seam increases Airbags can continue to enlarge. The tearing should not be abrupt, otherwise the pressure inside the gas bag would suddenly drop.
  • the extension of the tether is characteristic or pressure controlled, so that on the prevailing internal pressure, the extension of the tether can be influenced. The extension of the tether in turn affects the volume of the airbag, whereby a feedback to the pressure within the airbag takes place.
  • the tether extends approximately parallel to the plane of the outlet opening within the gas bag. As a result, a constriction is achieved transversely to the outlet direction of the gas bag. When extending the tether so that the effective range of the airbag can be increased far beyond the outlet opening.
  • the tether can be glued.
  • An additional advantage is that further energy is absorbed when tearing open.
  • a plurality of seams may be provided.
  • the seams may also have a different length or size and thereby fail at different pressures.
  • the tear or adhesive seam can be arranged in the middle of the tether. It can also be provided on the edge of the gas bag. There it can be combined with an outflow opening for the outflow of the gas. Such outflow openings are also called "Venthole”.
  • the tether covers an outflow opening so that it is closed at the beginning of the filling of the gas bag. Only when a certain internal pressure is exceeded, give the tethers and thereby release the openings. As a result, the gas bag keeps its high pressure level longer and adapts itself to the desired pressure level only when the occupant is submerged.
  • the tear seams - if there are several - must then be coordinated so that they tear each other and in each case at the right time.
  • Fig. 1 a cross section through an airbag of a
  • Fig. 1 shows a schematic representation of a steering wheel 1 in a motor vehicle, not shown.
  • the steering wheel 1 is equipped with an airbag module, of which only a filled airbag 2 is shown in the illustration.
  • the other components of the airbag module such as the gas generator or the airbag flaps are not shown for clarity.
  • the gas bag 2 occurs after activation of an outlet opening 3 of the steering wheel in the direction of the Steering wheel opposite sitting occupant 4, of which the head 5 is shown here, and unfolds according to its geometry.
  • a tether 6 is fastened with its two ends 7 and 8 on the inside 2a of the airbag 2. Approximately in the middle, the tether 6 is placed in a loop 9, which is fixed by means of a tear seam 10, so that a shortened length 1 of the tether 6 and thus a constricted airbag 2 results in a reduced volume.
  • the tear seam 10 fails, as a result of which the gas bag 2 can continue to unfold into the shape shown in dashed lines, while still maintaining the distance h between the impact section 2b opposite the occupants 4, 5 and the outlet opening 3 As a result, the occupant 4, 5 is always intercepted independently of the length 1 of the tether 6 at a minimum distance from the steering wheel 1.
  • FIG. 2 A possible arrangement of tear seams 10 in the tether 6 is shown in FIG. 2, which fail due to their different lengths at different internal pressures.

Abstract

L'invention concerne un sac (2) contenant du gaz d'un module de coussin gonflable, ledit sac (2), comprenant un partie d'impact (2b) s'élargissant d'un orifice de sortie (3) d'un module de coussin gonflable dans la direction du passager (4, 5). Ledit sac comprend au moins une bande de garde (6) fixée sur les côtés internes (2a) du sac (2) contenant du gaz, qui peut s'allonger, lors du dépassement d'une pression interne à l'intérieur du sac (2) contenant du gaz, d'au moins une partie longitudinale, ce qui permet d'améliorer le volume du sac (2) contenant du gaz. L'objectif de l'invention est de créer un sac contenant du gaz pour un module de coussin gonflable présentant un retrait anticipé, dans lequel les pics de charge peuvent être réduits. A cet effet, la bande de garde (6) s'étend à l'intérieur du sac (2) contenant du gaz, de sorte que le volume dudit sac (2) s'accroît, lors du maintien d'un intervalle (h) défini entre l'orifice de sortie (3) et la partie d'impact (2b) tournée vers le passager (4, 5), opposé à l'orifice de sortie (3).
PCT/EP2005/014040 2005-01-29 2005-12-24 Sac contenant du gaz pour un module de coussin gonflable WO2006079414A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005004183.3 2005-01-29
DE200510004183 DE102005004183A1 (de) 2005-01-29 2005-01-29 Gassack eines Airbagmoduls

Publications (1)

Publication Number Publication Date
WO2006079414A1 true WO2006079414A1 (fr) 2006-08-03

Family

ID=35929736

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/014040 WO2006079414A1 (fr) 2005-01-29 2005-12-24 Sac contenant du gaz pour un module de coussin gonflable

Country Status (2)

Country Link
DE (1) DE102005004183A1 (fr)
WO (1) WO2006079414A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018102869A1 (de) * 2018-02-08 2019-08-08 Dalphi Metal Espana, S.A. Airbagmodul und Verfahren zur Herstellung eines Airbagmoduls

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879056A (en) * 1972-02-21 1975-04-22 Toyoda Boshoku Kk Safety gas bag structure
US6095557A (en) * 1997-08-08 2000-08-01 Toyoda Gosei Co., Ltd. Air bag apparatus
US20040012180A1 (en) * 2002-07-19 2004-01-22 Hawthorn Laura Adelle Air bag restraint including selectively operable venting elements

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3353463B2 (ja) * 1994-06-10 2002-12-03 タカタ株式会社 エアバッグ
JP2000142290A (ja) * 1998-11-09 2000-05-23 Kansei Corp 車両用エアバッグ
DE19860823A1 (de) * 1998-12-30 2000-07-06 Volkswagen Ag Insassenschutzvorrichtung mit einem Beifahrerairbag in einem Personenkraftwagen
JP3950002B2 (ja) * 2002-04-17 2007-07-25 日本プラスト株式会社 自動車のエアバッグ装置
US7152877B2 (en) * 2003-01-24 2006-12-26 Takata Corporation Airbag and airbag apparatus
DE20317038U1 (de) * 2003-10-31 2004-02-12 Takata-Petri Ag Gassackanordnung für ein Beifahrerairbagmodul

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879056A (en) * 1972-02-21 1975-04-22 Toyoda Boshoku Kk Safety gas bag structure
US6095557A (en) * 1997-08-08 2000-08-01 Toyoda Gosei Co., Ltd. Air bag apparatus
US20040012180A1 (en) * 2002-07-19 2004-01-22 Hawthorn Laura Adelle Air bag restraint including selectively operable venting elements

Also Published As

Publication number Publication date
DE102005004183A1 (de) 2006-05-04

Similar Documents

Publication Publication Date Title
EP1826073B1 (fr) Coussin gonflable pour genoux
EP3504089B1 (fr) Système de coussin gonflable de sécurité pour véhicule à moteur et coussin gonflable de sécurité pour système de coussin gonflable de sécurité
DE10102597B4 (de) Sicherheitseinrichtung an einem Kraftfahrzeug zum Schutz von Fußgängern
EP1885582B1 (fr) Systeme d'airbag
DE102005011676B4 (de) Vorhang-Gassack und Kraftfahrzeug
WO2019166268A1 (fr) Module de coussin gonflable de sécurité et système de retenue pour passager de véhicule
EP3194217B1 (fr) Élément de retenue dépliable adaptatif pour système de sécurité de véhicule, module de coussin de sécurité gonflable et système de sécurité de véhicule comprenant un élément de retenue de ce type et utilisation de l'effet rayon de nageoire dans un élément de retenue adaptatif
DE102013113834A1 (de) Airbagvorrichtung
DE102006038125B4 (de) Rückhaltesystem
DE19930157B4 (de) Luftsack für ein Kraftfahrzeug
DE10260385A1 (de) Sicherheitseinrichtung für ein Fahrzeug, insbesondere ein Kraftfahrzeug
WO2019076669A1 (fr) Système de retenue d'occupant de véhicule muni d'un module airbag
DE19645373A1 (de) Verfahren zur Sicherung eines Fahrzeuginsassen und Airbagmodul zur Durchführung des Verfahrens
EP2758284B1 (fr) Airbag genoux muni d'un tuyau de remplissage lui conférant sa forme
DE102004038459B4 (de) Airbagmodul zum Schutz eines Kraftfahrzeuginsassen
DE102013015312B4 (de) Frontairbagvorrichtung für einen Fahrzeugsitz
DE102017131121A1 (de) Fahrzeuginsassenschutzsystem, Fahrzeugsitz sowie Verfahren zum Entfalten eines Gassacks
DE102007023816B4 (de) Gassackmodul
EP1798117B1 (fr) Module de sac gonflable
DE102006038124A1 (de) Rückhaltesystem für ein Kraftfahrzeug
WO2006079414A1 (fr) Sac contenant du gaz pour un module de coussin gonflable
EP1508485B1 (fr) Module de coussin gonflable
DE102004023780A1 (de) Airbageinrichtung
DE102004048250A1 (de) Seitenairbagmodul in einem Kraftfahrzeug
DE102008010279A1 (de) Fahrzeugsitz mit integriertem Airbag

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase

Ref document number: 05821720

Country of ref document: EP

Kind code of ref document: A1

WWW Wipo information: withdrawn in national office

Ref document number: 5821720

Country of ref document: EP