WO2009107343A1 - Dispositif de coussin de sécurité gonflable - Google Patents

Dispositif de coussin de sécurité gonflable Download PDF

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Publication number
WO2009107343A1
WO2009107343A1 PCT/JP2009/000708 JP2009000708W WO2009107343A1 WO 2009107343 A1 WO2009107343 A1 WO 2009107343A1 JP 2009000708 W JP2009000708 W JP 2009000708W WO 2009107343 A1 WO2009107343 A1 WO 2009107343A1
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WO
WIPO (PCT)
Prior art keywords
airbag
panel
center panel
airbag device
joining
Prior art date
Application number
PCT/JP2009/000708
Other languages
English (en)
Japanese (ja)
Inventor
堀川潤
和出宏
伊藤千尋
芳賀貴
Original Assignee
オートリブ ディベロップメント エービー
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 オートリブ ディベロップメント エービー filed Critical オートリブ ディベロップメント エービー
Priority to JP2010500549A priority Critical patent/JP5113901B2/ja
Publication of WO2009107343A1 publication Critical patent/WO2009107343A1/fr

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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
    • B60R21/2334—Expansion control features
    • B60R21/2342—Tear seams

Definitions

  • the present invention relates to an airbag device that deploys an airbag to protect an occupant in the event of a vehicle collision.
  • the present invention relates to an airbag device that is disposed inside an instrument panel (instrument panel) of a vehicle and protects a passenger in a passenger seat.
  • the airbag device that protects an occupant by deploying an airbag when a vehicle collides is known.
  • the airbag device is generally provided in a handle or an instrument panel, and protects a driver and a passenger in a passenger seat. Some of them are provided on the side of the seat back or above the side door to ensure the protection of the driver and the like.
  • the basic structure of these airbag devices is common, and includes an airbag folded so as to be inflated and deployed, an inflator that supplies inflation gas to the airbag, a sensor that detects a vehicle collision, and the like.
  • an inflator that supplies inflation gas to the airbag
  • a sensor that detects a vehicle collision, and the like.
  • the igniter in the inflator is ignited, and the gas generating agent in the inflator is combusted.
  • Patent Documents 1 and 2 disclose inventions applicable to a passenger seat airbag device. JP-A-6-344849 JP-A-8-207680
  • Airbags are usually formed into bags by sewing fabric. Since the internal pressure of the airbag at the time of deployment is very high, for example, if the pressure is concentrated on the sewing portion, the sewing portion may be spread due to excessive tension. In particular, when the airbag is inflated to the rear side of the vehicle, a large tension is generated in the airbag deployment direction. A seam (sewing part) extending in a direction perpendicular to the development direction tends to be easily damaged.
  • the present invention has been made in view of the situation as described above, and provides an airbag device that can solve or reduce the problem caused by excessive tension at a sewing location of an airbag while having a simple configuration. Objective.
  • an airbag device is accommodated in an instrument panel in a compressed state when not in use, is attached to an airbag container, and is An airbag that inflates and deploys toward the chamber; and a gas generator that supplies inflation gas into the airbag.
  • the airbag includes a center panel that includes a region facing an occupant when inflated and extends in a ring shape up and down and front and rear; and a side panel that covers a side surface of the center panel.
  • the center panel is formed by joining both end portions of a generally strip-shaped panel. And the longitudinal direction both-ends edge part of the said strip
  • both end portions of the strip-shaped panel have a shape protruding in an arc shape toward the outside.
  • belt-shaped panel can be sewed continuously and smoothly, and it becomes advantageous at the point of work efficiency.
  • an airbag device includes an airbag that is accommodated in an instrument panel in a compressed state when not in use, and that is inflated and deployed toward a passenger compartment when an emergency occurs; A gas generator for supplying inflation gas into the airbag.
  • the airbag includes a center panel that includes a region facing an occupant when inflated and extends in a ring shape up and down and front and rear; and a side panel that covers a side surface of the center panel.
  • the longitudinal side of the center panel and the outer periphery of the side panel are joined along a first joining line, and both longitudinal ends of the center panel are joined along a second joining line. is there.
  • the second joining line has a convex shape toward the end side (outer side) of the center panel, thereby forming a sag in the portion of the inflated airbag.
  • the second joining line has a shape protruding in an arc shape toward the outside.
  • belt-shaped panel can be sewed continuously and smoothly, and it becomes advantageous at the point of work efficiency.
  • FIG. 1 is a schematic side view showing an operating state of an airbag apparatus according to the present invention.
  • An airbag device 10 for a passenger seat according to the present invention is accommodated in an instrument panel (instrument panel) 10 in a compressed state when not in use, and is inflated and deployed toward a passenger compartment when an emergency occurs.
  • An inflator 12 as a gas generator for supplying inflation gas into the airbag 14.
  • the inflator 12 is activated and the inflation gas is supplied into the airbag 14. Then, the airbag 14 jumps out from the upper part of the instrument panel 10 and is deployed toward the passenger along the windshield 16.
  • the airbag 14 is formed into a bag shape using a synthetic fiber fabric or the like, and is attached to and accommodated in a metal box-shaped airbag container 13 in a folded state.
  • a circular hole (not shown) is formed in the bottom portion of the airbag container 13, and the upper part (gas discharge port) of the inflator 12 is inserted into the hole.
  • the airbag 14 and the inflator 12 are fixed to the bottom surface of the airbag container 13 by a flange-shaped fixing plate, and the airbag container is fixed to the vehicle.
  • “attached to the airbag container 13” is a concept including that at least a part of the airbag is fixed to the airbag container.
  • FIG. 2 is a perspective view showing a deployed state of the airbag used in the airbag apparatus according to the first embodiment of the present invention
  • FIG. 3 is a developed view (assembly drawing).
  • the airbag 14 includes a center panel 22 that includes a region that faces an occupant when inflated and extends in a ring shape in the up and down and front and rear directions; and side panels 20R and 20L that cover the side surfaces of the center panel 22.
  • the center panel 22 is formed into an annular shape by joining both end portions 22a and 22b of a generally band-shaped panel. Both ends 22a and 22b in the longitudinal direction of the belt-like panel have a shape projecting in an arc shape toward the outside. By joining such end portions, slack in the corresponding portion of the inflated airbag 14 A portion 18 is formed.
  • the center panel 22 is formed in a band shape in which an intermediate portion is swollen (wide), and the intermediate portion is configured to face an occupant.
  • a circular opening 14 is formed into which the blowout port of the inflator 12 is inserted.
  • the shape of the edge portions 22a and 22b in the longitudinal direction of the belt-like panel is not necessarily limited to the arc shape, and may be a shape having a corner portion or a waveform.
  • the joining location of the edge part of the center panel 22 is set to the position of the dotted circle X in FIG.
  • the wind shield 16 may be broken by the hard joint part X, which is not preferable.
  • the end joint position X of the center panel 22 is a portion in contact with the occupant (left side in FIG. 1), the hard joint portion X may be in contact with the occupant, which is not preferable.
  • the end joint position X of the center panel 22 is disposed in the vicinity of the lowermost portion of the airbag 14, the airbag 14 may be burst, which is not preferable.
  • the end joint position X of the center panel 22 is the position of the dotted circle X in FIG. 1 as in this embodiment, the position is in the middle of the gas flow (not the end position).
  • the possibility of bursting is reduced.
  • Such a joint position X can be said to be “a position that is not the end position of the gas flow, does not contact the windshield, and does not contact the occupant”.
  • it can also be expressed as “in the middle of an inclined portion extending downward from the inflator and extending obliquely downward in the deployed airbag”.
  • the side panels 20R and 20L have a shape in which a notch is formed in a part thereof, and such a narrow portion is positioned directly above the inflator 12 when the airbag 14 is deployed. Yes. Circular vent holes 26R and 26L are formed in the side panels 20R and 20L, respectively.
  • the total perimeter of each of the side panels 20R and 20L and the side length of the center panel 22 are basically the same and are joined (sewn) without sagging.
  • the inflator 12 when an abnormal situation such as a frontal collision occurs, the inflator 12 is actuated by a signal from a sensor (not shown), and inflation gas is supplied into the airbag 14. Then, as shown in FIG. 1, the airbag 14 jumps out from the upper part of the instrument panel 10 and is deployed toward the passenger along the windshield 16.
  • a sag (margin) 18 is formed at a joint portion of the center panel 22 of the airbag 14 according to the present invention, it is absorbed even when a large pressure or a large tension is applied to the portion. It is possible to prevent excessive tension from being generated in the sewing portion.
  • the present invention is particularly effective when the joint portion (sewing direction) between the end portions of the center panel 22 is orthogonal to the deployment direction of the airbag 14 as in the above-described embodiment.
  • the “deployment direction” means a direction from the front to the rear of the vehicle.
  • FIG. 8 is a perspective view showing a deployed state of the airbag used in the airbag apparatus according to the second embodiment of the present invention
  • FIG. 9 is a developed view (assembly drawing).
  • the airbag 14 includes a center panel 22 that includes a region that faces an occupant when inflated and extends in a ring shape in the up and down and front and rear directions; and side panels 20R and 20L that cover the side surfaces of the center panel 22.
  • the center panel 22 is formed into an annular shape by joining both end portions 22a and 22b of a generally band-shaped panel.
  • the longitudinal side of the center panel 22 and the outer periphery of the side panels 22R and 22L are joined (for example, sewn) along the first joining lines 32a and 32b.
  • the longitudinal direction both ends 22a and 22b of the center panel 22 are joined (for example, sewn) along the arc-shaped second joining line 34.
  • the second joining line 34 has a circular arc shape that is convex toward the end side (outer side) of the center panel 22, thereby forming a sag 18 in the corresponding portion of the inflated airbag 14.
  • the shape of the second joining line 34 is not necessarily limited to an arc shape, and may be a shape having a corner or a waveform.
  • the joining location of the edge part of the center panel 22 is set to the position of the dotted circle X in FIG.
  • the wind shield 16 may be broken by the hard joint part X, which is not preferable.
  • the end joint position X of the center panel 22 is a portion in contact with the occupant (left side in FIG. 1), the hard joint portion X may be in contact with the occupant, which is not preferable.
  • the end joint position X of the center panel 22 is disposed in the vicinity of the lowermost portion of the airbag 14, the airbag 14 may be burst, which is not preferable.
  • the end joint position X of the center panel 22 is the position of the dotted circle X in FIG. 1 as in this embodiment, the position is in the middle of the gas flow (not the end position).
  • the possibility of bursting is reduced.
  • Such a joint position X can be said to be “a position that is not the end position of the gas flow, does not contact the windshield, and does not contact the occupant”.
  • it can also be expressed as “in the middle of an inclined portion extending downward from the inflator and extending obliquely downward in the deployed airbag”.
  • the center panel 22 is formed in a band shape in which an intermediate portion is swollen (wide), and the intermediate portion is configured to face an occupant.
  • a circular opening 14 is formed into which the blowout port of the inflator 12 is inserted.
  • the side panels 20R and 20L have a shape in which a notch is formed in a part thereof, and such a narrow portion is positioned directly above the inflator 12 when the airbag 14 is deployed. Yes. Circular vent holes 26R and 26L are formed in the side panels 20R and 20L, respectively.
  • the total perimeter of each of the side panels 20R and 20L and the side length of the center panel 22 are basically the same and are joined (sewn) without sagging.
  • the airbag 14 will be described by taking as an example the case where the panels 20R, 20L, and 22 are joined by sewing.
  • the outer peripheries of the side panels 20R and 20L and the side edges of the center panel 22 are sewn along the first sewing lines 32a and 32b.
  • the longitudinal end edges 22 a and 22 b of the belt-like panel (22) are sewn along the second joining line 34.
  • the airbag 14 formed by such a sewing procedure is actually inflated and deployed, as shown in FIGS. 12 and 13, the airbag 14 sags at the sewing portion between the longitudinal edges 22 a and 22 b of the strip-like panel (22). 18 will be formed.
  • the operation, action, and effect of the airbag device itself are basically the same as those in the first embodiment described above.
  • the present invention can be applied to various types of airbag devices, but is particularly suitable for a passenger seat airbag device as in the embodiment.
  • the panel In the case of a passenger seat airbag device, the panel is usually joined in a three-dimensional manner. Some of these panel joints are positioned so as to intersect with a larger tension than others generated in the direction of airbag inflation when the airbag is inflated.
  • the present invention works particularly effectively when the joint is located in the vicinity of the airbag fixing point.
  • FIG. 1 is a schematic side view showing an operating state of an airbag apparatus according to the present invention.
  • FIG. 2 is a perspective view showing a deployed state of the airbag used in the airbag apparatus according to the first embodiment of the present invention.
  • FIG. 3 is a developed view (assembled view) of the airbag used in the airbag apparatus according to the first embodiment of the present invention.
  • FIG. 4 is a developed view (assembled view) of the airbag used in the airbag apparatus according to the first embodiment of the present invention.
  • FIG. 5 is a partial plan view showing the structure of the main part of the airbag used in the airbag apparatus according to the first embodiment of the present invention.
  • FIG. 6 is a front view showing a deployed state of the airbag used in the airbag apparatus according to the first embodiment of the present invention.
  • FIG. 7 is a cross-sectional view showing the structure of the main part of the airbag used in the airbag apparatus according to the first embodiment of the present invention.
  • FIG. 8 is a perspective view showing a deployed state of the airbag used in the airbag apparatus according to the second embodiment of the present invention.
  • FIG. 9 is a developed view (assembled view) of the airbag used in the airbag apparatus according to the second embodiment of the present invention.
  • FIG. 10 is a developed view (assembled view) of the airbag used in the airbag apparatus according to the second embodiment of the present invention.
  • FIG. 11 is a partial plan view showing the structure of the main part of the airbag used in the airbag apparatus according to the second embodiment of the present invention.
  • FIG. 12 is a front view showing a deployed state of the airbag used in the airbag apparatus according to the second embodiment of the present invention.
  • FIG. 13 is a cross-sectional view showing the structure of the main part of the airbag used in the airbag apparatus according to the second embodiment of the present invention.
  • Instruments panel 12 Instruments panel 12: Inflator 14: Air bag 16: Windshield 20R, 20L: Side panel 22: Center panel 22a, 22b: Center panel end portions 32a, 32b: First joining line 34: Second joining line

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

L'invention porte sur un dispositif de coussin de sécurité gonflable dans lequel un problème provoqué par une apparition d'une tension excessive au niveau d'une partie cousue d'un coussin de sécurité gonflable est éliminé ou réduit par une structure simple. Selon le dispositif de coussin de sécurité gonflable, le coussin de sécurité gonflable est logé à l'intérieur d'un tableau de bord dans un état comprimé lorsqu'il n'est pas utilisé, est monté sur un contenant de coussin de sécurité gonflable, et est gonflé et étendu en direction d'un intérieur de véhicule lorsqu'une situation d'urgence se produit, et le dispositif de coussin de sécurité gonflable comporte également un dispositif de génération de gaz pour introduire un gaz de gonflage dans le coussin de sécurité gonflable. Le coussin de sécurité gonflable comporte un panneau central s'étendant, lorsqu'il est gonflé, dans une forme annulaire dans les directions supérieure-inférieure et avant-arrière tout en comprenant une région tournée vers un occupant, et le coussin de sécurité gonflable comporte également des panneaux latéraux pour couvrir les faces latérales du panneau central. Le panneau central est formé par liaison d'extrémités opposées d'un panneau sensiblement de type bande. Les extrémités opposées longitudinales du panneau de type bande sont formées de façon à faire saillie vers l'extérieur. Réunir les extrémités opposées de cette manière permet de former un affaissement dans la partie réunie du coussin de sécurité gonflable dans un état gonflé.
PCT/JP2009/000708 2008-02-25 2009-02-19 Dispositif de coussin de sécurité gonflable WO2009107343A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010500549A JP5113901B2 (ja) 2008-02-25 2009-02-19 エアバッグ装置

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2008-042792 2008-02-25
JP2008042792 2008-02-25
JP2008-112190 2008-04-23
JP2008112190 2008-04-23
JP2008114103 2008-04-24
JP2008-114103 2008-04-24

Publications (1)

Publication Number Publication Date
WO2009107343A1 true WO2009107343A1 (fr) 2009-09-03

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PCT/JP2009/000708 WO2009107343A1 (fr) 2008-02-25 2009-02-19 Dispositif de coussin de sécurité gonflable

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JP (1) JP5113901B2 (fr)
WO (1) WO2009107343A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012046056A (ja) * 2010-08-26 2012-03-08 Nippon Plast Co Ltd 自動車の助手席用エアバッグ装置
CN114728624A (zh) * 2019-12-05 2022-07-08 奥托立夫开发公司 安全气囊装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0651458B2 (ja) * 1989-10-23 1994-07-06 池田物産株式会社 エアバッグ装置
JP2003165408A (ja) * 2001-12-03 2003-06-10 Toyoda Gosei Co Ltd 車両用エアバッグ及び該エアバッグを備えるエアバッグ装置
US20040108699A1 (en) * 2002-12-09 2004-06-10 Brian Ford Air bag cushion and module
JP2004237908A (ja) * 2003-02-07 2004-08-26 Nippon Plast Co Ltd 助手席用エアバッグ
JP2007076619A (ja) * 2005-09-16 2007-03-29 Toyota Motor Corp 運転席用エアバッグ装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0651458B2 (ja) * 1989-10-23 1994-07-06 池田物産株式会社 エアバッグ装置
JP2003165408A (ja) * 2001-12-03 2003-06-10 Toyoda Gosei Co Ltd 車両用エアバッグ及び該エアバッグを備えるエアバッグ装置
US20040108699A1 (en) * 2002-12-09 2004-06-10 Brian Ford Air bag cushion and module
JP2004237908A (ja) * 2003-02-07 2004-08-26 Nippon Plast Co Ltd 助手席用エアバッグ
JP2007076619A (ja) * 2005-09-16 2007-03-29 Toyota Motor Corp 運転席用エアバッグ装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012046056A (ja) * 2010-08-26 2012-03-08 Nippon Plast Co Ltd 自動車の助手席用エアバッグ装置
CN114728624A (zh) * 2019-12-05 2022-07-08 奥托立夫开发公司 安全气囊装置

Also Published As

Publication number Publication date
JP5113901B2 (ja) 2013-01-09
JPWO2009107343A1 (ja) 2011-06-30

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