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WO2018179844A1 - Dispositif de coussin de sécurité gonflable latéral - Google Patents

Dispositif de coussin de sécurité gonflable latéral Download PDF

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Publication number
WO2018179844A1
WO2018179844A1 PCT/JP2018/003862 JP2018003862W WO2018179844A1 WO 2018179844 A1 WO2018179844 A1 WO 2018179844A1 JP 2018003862 W JP2018003862 W JP 2018003862W WO 2018179844 A1 WO2018179844 A1 WO 2018179844A1
Authority
WO
WIPO (PCT)
Prior art keywords
airbag device
slit
panel
airbag
front panel
Prior art date
Application number
PCT/JP2018/003862
Other languages
English (en)
Japanese (ja)
Inventor
哲哉 岩田
真孝 福田
輝幸 浅田
鈴木　秀典
Original Assignee
オートリブ ディベロップメント エービー
哲哉 岩田
真孝 福田
輝幸 浅田
鈴木　秀典
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, 哲哉 岩田, 真孝 福田, 輝幸 浅田, 鈴木　秀典 filed Critical オートリブ ディベロップメント エービー
Priority to JP2019508679A priority Critical patent/JP6748293B2/ja
Publication of WO2018179844A1 publication Critical patent/WO2018179844A1/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
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/207—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
    • 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
    • B60R21/239—Inflatable members characterised by their venting means

Definitions

  • the present invention relates to a side airbag device that protects an occupant by deploying at a seat side portion of a vehicle.
  • the present invention relates to a side airbag device provided in a vehicle seat.
  • a three-dimensional (three-dimensional) structure may be employed to regulate the deployment shape of the airbag.
  • a three-dimensional airbag is formed by connecting a plurality of panels.
  • Patent Literature 1 a vertically long seam is formed at the boundary between the front surface and the side surface of the airbag.
  • the seam may not be sufficiently opened and exhaust may be insufficient.
  • Other structures have also been proposed, but all have complicated structures.
  • the present invention has been made in view of the above situation, and in a side airbag device employing a three-dimensionally deployable airbag, the occupant comes into contact with the deployed airbag while having a simple structure.
  • An object of the present invention is to provide a side airbag device capable of exhausting reliably at times.
  • the present invention that achieves the above object includes a side airbag device having an airbag that is accommodated in a vehicle seat and protects an occupant by inflating and deploying, and the airbag is a front panel that faces the front of the vehicle when inflated and deployed. And a side panel connected to the side of the front panel. A slit is formed in the front panel along a direction in which a tension is applied during expansion and deployment.
  • the side airbag device having such a structure, when an occupant collides (contacts) with the side surface of the inflated airbag, the tension on the front panel is loosened, and accordingly, the slit is perpendicular to the tension (generally up and down). The expansion gas is surely discharged to the outside.
  • the left and right edge portions of the front panel may be connected to the side panel.
  • the side panel and the front panel completely separate members, it becomes easy to control the direction of the tension applied to the front panel when the airbag is inflated and deployed.
  • the front panel can be formed around a position (height) corresponding to at least a passenger's head.
  • a slit in the front panel arranged and formed in this way, when the occupant's head contacts the airbag, the slit can be opened and the exhaust gas can be discharged reliably. Further, the range of the front panel can be minimized, and the degree of freedom in the configuration of the airbag panel is increased.
  • the front panel may be configured to form the entire front surface of the airbag.
  • Such a structure makes it easy to maintain the deployed shape of the airbag in a three-dimensional shape, and increases the degree of freedom of the slit forming position. For example, an arrangement in which a slit is added relatively downward for an occupant having a small physique is possible.
  • the front panel can be formed such that at least one of the upper end and the lower end gradually becomes narrower toward the end.
  • the overall shape of the inflated airbag can be made smoother with fewer protrusions.
  • the slit can be configured to extend substantially horizontally when the airbag is inflated and deployed. If the slit is inclined obliquely with respect to the horizontal, the direction of the tension applied to the front panel and the direction in which the slit extends will cross, and the slit will not close securely during the process of inflation and deployment of the airbag, and inflation gas will not be closed. There is a risk of leakage.
  • the slit may have a structure extending to the vicinity of the connecting portion with the side panel. With such a structure, when the occupant collides with the side panel of the inflated airbag, the looseness of the tension of the front panel directly reaches the end of the slit, so that the slit is quickly opened.
  • the slit can be formed at a height corresponding to the head of the passenger.
  • a plurality of the slits may be formed, and at least one slit may be formed at a height corresponding to the head of the occupant.
  • a reinforcing structure that increases the rigidity of the peripheral portion of the slit can be provided.
  • the slit formed in the front panel is surely and quickly opened.
  • the rigidity around the slit is insufficient, even if the tension of the front panel is lowered, the force is hardly transmitted to the slit, and the slit is not sufficiently opened.
  • the reinforcing structure may be sewn along the upper and lower edges of the slit.
  • the sewing referred to here includes “overlock sewing”.
  • a reinforcing panel provided so as to overlap the front panel can be employed.
  • the slit is formed through both the front panel and the reinforcing panel. The rigidity around the slit can be increased by a relatively simple work process.
  • At least one inner panel for connecting the left and right side panels may be provided inside the airbag.
  • the airbag can be easily maintained in a desired three-dimensional shape as a whole.
  • the inner panel can be disposed so as to be substantially parallel to the front panel when the airbag is inflated and deployed. According to such a structure, a large tension is applied in the left and right direction to reliably restrict the airbag together with the front panel from expanding in the left and right width direction, and the opening and closing function of the slit provided in the front panel Will be fully demonstrated.
  • the airbag may include a main chamber that restrains an occupant by inflating and deploying, and an inner chamber that is disposed inside the main chamber and contains an inflator that generates inflation gas.
  • An opening that is in fluid communication with the main chamber can be formed in the inner chamber.
  • a plurality of openings that are in fluid communication with the main chamber are formed in the inner chamber, and the expansion gas that flows out of the plurality of openings is guided to each space partitioned by the inner panel. it can.
  • the flow of the inflation gas becomes smooth, which contributes to the improvement of the airbag deployment speed and the stabilization of the deployment shape.
  • the airbag device can be configured to be accommodated in a vehicle inner side portion (the side opposite to the door panel) of the vehicle seat.
  • a type of airbag is referred to as, for example, a far side airbag, a front center airbag, a rear center airbag, or the like.
  • a side airbag of the type that is deployed on the door panel side of the vehicle it is necessary to positively regulate the deployment shape of the airbag, and the significance and effect of the present invention become more remarkable.
  • front or “front” means the traveling direction of the vehicle
  • back or “rear” means the opposite side of the vehicle traveling direction
  • width direction means the vehicle direction. It means the horizontal direction (left-right direction) orthogonal to the traveling direction
  • right means the right side toward the vehicle traveling direction
  • left means the left side toward the vehicle traveling direction
  • inside means the left side toward the vehicle traveling direction
  • outside means the outside of the vehicle from the position (door panel side).
  • the side airbag according to the present invention is applicable not only to a type that is deployed on the vehicle inner side (center side) of the seat but also to a type that is deployed on the outer side (door side) of the seat.
  • FIG. 1 is a schematic side view of a side airbag device according to an embodiment of the present invention, and shows a state where an airbag is observed from the center side (opposite side of a door panel) of a vehicle.
  • FIG. 2 is the front view (A) and side view (B) which show the expansion
  • FIG. 3 is a plan view showing a schematic shape of a panel constituting the airbag according to the embodiment of the present invention.
  • 4A and 4B are front views showing the operation of the side airbag device according to the embodiment of the present invention, in which FIG. 4A shows a state immediately after inflating and deploying, and FIG. 4B shows that the head of the passenger contacts the airbag.
  • 5 (A) to 5 (D) are schematic plan views showing other embodiments of the front panel used in the side airbag device according to the present invention.
  • 6 (A) to 6 (E) are schematic plan views showing aspects of the structure around the slit of the front panel used in the side airbag device according to the present invention.
  • a vehicle seat equipped with a side airbag device will be described with reference to the accompanying drawings. Note that “front” displayed in each figure is the front of the vehicle (traveling direction), “rear” is the rear of the vehicle (opposite the traveling direction), and “inside” is the inner side of the vehicle width (occupant side) “Outside” indicates the vehicle width direction outside (door panel side).
  • FIG. 1 is a schematic side view of the side airbag device according to the first embodiment, showing a state in which the airbag 10 is deployed from the inside in the vehicle width direction.
  • the side airbag device is accommodated on the side surface (far side) far from the door of the vehicle seat.
  • the vehicle seat includes a seat cushion 2 where a passenger sits; a seat back 1 that forms a backrest; and a headrest 3 that is coupled to the upper end of the seat back 1.
  • a seat back frame (not shown) that forms a skeleton of the seat is provided inside the seat back 1, and a pad made of urethane foam or the like is provided on the surface and the periphery thereof, and the surface of the pad is leather, fabric. Covered by epidermis etc.
  • the seat back 1 includes a side support portion 12 that bulges in the vehicle traveling direction (front of the vehicle) on the side (end) in the vehicle width direction. Inside the side support portion 12, the side airbag device is accommodated in a gap where no urethane pad is disposed.
  • the side airbag device includes an airbag 10 that restrains an occupant by inflating and deploying; and an inflator 14 that supplies inflation gas to the airbag 10 (see FIG. 2).
  • an airbag 10 that restrains an occupant by inflating and deploying
  • an inflator 14 that supplies inflation gas to the airbag 10 (see FIG. 2).
  • the airbag 10 starts to expand, the seam of the skin of the seat back 1 is cleaved, and the airbag 10 is deployed toward the front of the side support portion 12.
  • FIG. 2 is a front view (A) and a side view (B) showing a deployed state of the side airbag device according to the embodiment of the present invention.
  • FIG. 3 is a plan view showing a schematic shape of a panel constituting the airbag 10 according to the embodiment of the present invention.
  • the side airbag 10 includes a main chamber 30 that is directly involved in restraining an occupant and a sub chamber 32 that is accommodated in the main chamber 30 and that houses the inflator 14 therein.
  • the main chamber 30 is formed from one center panel 16 and two side panels 18R and 18L, as shown in FIG.
  • the outer edge of the center panel 16 and the front edge of the side panels 18R and 18L are connected by sewing 24.
  • the side panels 18R and 18L are connected to each other in a bag shape by sewing 22.
  • the sub-chamber 32 includes three vent openings 38a, 38b, and 38c for guiding the inflation gas released from the inflator 14 to the main chamber 30.
  • the inflator 14 can be, for example, a cylindrical cylinder type inflator.
  • a pair of upper and lower stud bolts protrudes from the outer periphery of the inflator 14 toward the inner side in the vehicle width direction. These stud bolts are attached to the side frame by a nut (fastened and fixed).
  • a plurality of gas jets arranged in the circumferential direction are formed in the inflator 14, and gas is jetted radially from the gas jets.
  • the inflator 14 is electrically connected to an airbag control ECU mounted on the vehicle.
  • a satellite sensor for detecting a side collision is electrically connected to the airbag control ECU.
  • the inflator 14 can be configured to operate when the airbag control ECU detects a side collision based on a signal from the satellite sensor.
  • Inner baffles 40 and 42 are connected to the inside of the main chamber 30.
  • One end 40a, 42a of the inner baffles 40, 42 is connected to the inner surface of the side panel 18R by sewing or the like, and the other end 40b, 42b is connected to the inner surface of the side panel 18L by sewing or the like.
  • the widths of the inner baffles 40 and 42 and the width of the front panel 16 can be made substantially the same. This makes it possible to reliably control the thickness of the inflated airbag 10 in the vehicle width direction.
  • the mounting angle of the inner baffles 40, 42 is preferably close to the angle of the front panel 16, as shown in FIG.
  • the openings 38a, 38b, 38c of the sub-chamber 32 are arranged so as to face the three spaces partitioned in the front-rear direction by the inner baffles 40, 42, respectively.
  • the inflation gas can be filled into the main chamber 30 smoothly and quickly.
  • FIGS. 2 and 3 Structure of front panel 16
  • the front panel 16 forms at least a part of the front surface of the airbag 10, and when the airbag 10 is inflated and deployed, tension is applied in the left-right direction of the front panel 16. .
  • the direction of this tension is almost horizontal.
  • a slit 20 is formed along the direction of the tension.
  • the position of the slit 20 in the vertical direction (height direction) is preferably designed so as to correspond to the position where the head of the occupant P contacts (see FIG. 4B).
  • the shape of the front panel 16 has a uniform width as a whole, but is shaped so as to narrow slightly toward the upper and lower ends. As a result, when the airbag 10 is inflated and deployed, the corners are reduced, and the entire bag is easily filled with gas at a uniform pressure.
  • the inclination in the narrowing direction at the upper end and the lower end of the front panel 16 may be either linear or curved, and the angle can be changed as appropriate.
  • the length of the front panel 16 in the vertical direction may be formed so as to reach not only a part of the front surface of the airbag 10 but also the upper, lower and rear portions of the side panels 18R and 18L as in the embodiment. Is possible. By expanding the range (length) of the front panel 16, the thickness of the entire airbag 10 can be easily controlled.
  • FIG. 4A and 4B are front views showing the operation of the side airbag device according to the embodiment of the present invention, in which FIG. 4A shows a state immediately after inflating and deploying, and FIG. 4B shows that the head of the passenger contacts the airbag. Indicates the state of the hour.
  • the shape When the vehicle 10 is inflated and the airbag 10 is inflated and deployed, the shape generally becomes as shown in FIG. At this time, the front panel 16 is tensioned in the horizontal direction, and the slit 20 is closed. Thereafter, when the head of the occupant P collides with the side panel 18L, the tension of the front panel 16 decreases, the slit 20 opens, and the gas inside the airbag 10 is discharged to the outside. As a result, the impact on the occupant P by the airbag 10 is reduced.
  • FIG. 5 (Front panel mode) 5 (A) to 5 (D) are schematic plan views showing other embodiments of the front panel used in the side airbag device according to the present invention.
  • the front panel 116 shown in FIG. 5 (A) is formed in a generally rectangular shape, and a slit 120 is formed at a position corresponding to the head of the occupant P.
  • the front panel 216 shown in FIG. 5 (B) is generally formed in a rectangular shape, and slits 220H and 220L are formed at a position corresponding to the head of the occupant P and at a position lower than that.
  • the lower slit 220L can effectively exhaust the inflation gas even to a small occupant. In other words, the exhaust operation can be performed without depending on the physique of the passenger.
  • the front panel 316 shown in FIG. 5C has a shape that narrows toward the lower end, and a slit 320 is formed at a position corresponding to the head of the occupant P.
  • the front panel 416 shown in FIG. 5D has a slit 420 formed at a position corresponding to the head of the occupant P, and the width becomes narrower from the slit 420 toward the upper end and the lower end.
  • the number of slits is set to two or more. Is possible. In this case, it is preferable to set in consideration of the height of the head of the passenger.
  • (Slit mode) 6 (A) to 6 (E) are schematic plan views showing an aspect of the structure around the slit 20 of the front panel used in the side airbag device according to the present invention.
  • the slit 20 can be a structure in which the front panel 16 is simply cut or a structure having a slight width (gap). What is important is that when the airbag 10 is inflated and deployed, the front panel 16 is tensioned, whereby both ends of the slit 20 are pulled and closed, and the side panel 18R of the airbag 10 that is inflated and deployed. When the occupant comes into contact with 18L, the slit 20 opens to open the mouth as the tension of the front panel 16 decreases.
  • the slit 20 shown in FIG. 6A corresponds to that shown in FIGS. 2 to 4, and both end portions extend to the vicinity of the connecting portion (sewing line) 24 between the front panel 16 and the side panels 18R and 18L. But not. If the gap between the end portion of the slit 20 and the coupling portion 24 is too large, the slit 20 is difficult to open. Note that when the airbag 10 is actually inflated and deployed and an occupant enters, the slit 20 may be extended to the coupling portion 24.
  • both ends of the slit 25 reach the connecting portion (sewing line) 24 between the front panel 16 and the side panels 18R and 18L.
  • the slit 20 shown in FIG. 6 (C) is the same as that shown in FIG. 6 (A), but reinforcing sewing (over stitching) 500 is formed along the edge. Both ends of the sewing 500 form an intersection 500a, and the rigidity at the end is increased.
  • the slit 20 and sewing 500 shown in FIG. 6D are the same as those shown in FIG. 6C, but a reinforcing panel 600 is provided around the slit 20.
  • the reinforcing panel 600 can be formed of the same material as the front panel 16 and can have a structure in which the panel is partially doubled.
  • the reinforcing panel 600 can be provided inside the front panel 16.
  • the slit 20 shown in FIG. 6 (E) is the same as that shown in FIG. 6 (A), and the reinforcing panel 600 employed in FIG. 6 (D) is provided. That is, the sewing 500 is omitted from the structure shown in FIG.
  • the side airbag on the so-called far side has been described mainly, but the near side airbag (the side near the vehicle door of the vehicle seat) or It can also be used for single-seat vehicles such as small mobility vehicles (such as vehicles that include only one seat in a row regardless of whether there is a door) or the like.

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

Abstract

Le problème décrit par la présente invention consiste à fournir un dispositif de coussin de sécurité gonflable latéral qui utilise un coussin de sécurité gonflable déployable en trois dimensions et qui présente une structure simple et qui peut évacuer un gaz de manière fiable lorsqu'un passager entre en contact avec le coussin de sécurité gonflable déployé. La solution selon l'invention porte sur un dispositif de coussin de sécurité gonflable latéral qui comprend un coussin de sécurité gonflable qui est reçu dans un siège de véhicule et protège un passager en étant gonflé et déployé, le coussin de sécurité gonflable comprenant : un panneau avant qui fait face au côté avant du véhicule pendant le gonflage et le déploiement ; et un panneau latéral raccordé au côté du panneau avant. En outre, dans le panneau avant, une fente est formée le long de la direction dans laquelle une tension est appliquée pendant le gonflage et le déploiement.
PCT/JP2018/003862 2017-03-27 2018-02-05 Dispositif de coussin de sécurité gonflable latéral WO2018179844A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019508679A JP6748293B2 (ja) 2017-03-27 2018-02-05 サイドエアバッグ装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-061972 2017-03-27
JP2017061972 2017-03-27

Publications (1)

Publication Number Publication Date
WO2018179844A1 true WO2018179844A1 (fr) 2018-10-04

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Application Number Title Priority Date Filing Date
PCT/JP2018/003862 WO2018179844A1 (fr) 2017-03-27 2018-02-05 Dispositif de coussin de sécurité gonflable latéral

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WO (1) WO2018179844A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021155008A (ja) * 2020-03-30 2021-10-07 芦森工業株式会社 サイドエアバッグ装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02132555U (fr) * 1989-04-12 1990-11-02
JPH0633757U (ja) * 1992-10-12 1994-05-06 豊田合成株式会社 エアバッグ装置のエアバッグ
JP2001277991A (ja) * 2000-03-31 2001-10-10 Takata Corp エアバッグ
JP2009001057A (ja) * 2007-06-19 2009-01-08 Toyoda Gosei Co Ltd サイドエアバッグ装置
WO2013030995A1 (fr) * 2011-08-31 2013-03-07 トヨタ自動車株式会社 Dispositif de coussin de sécurité gonflable latéral d'automobile
WO2013157082A1 (fr) * 2012-04-17 2013-10-24 トヨタ自動車株式会社 Dispositif de coussin de sécurité gonflable latéral pour véhicule
JP2014019320A (ja) * 2012-07-19 2014-02-03 Toyota Motor Corp 車両用サイドエアバッグ装置
JP2016078507A (ja) * 2014-10-10 2016-05-16 トヨタ自動車株式会社 車両用サイドエアバッグ装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008007019A (ja) * 2006-06-30 2008-01-17 Mazda Motor Corp サイドエアバッグ装置
JP2008024263A (ja) * 2006-07-25 2008-02-07 Takata Corp サイドエアバッグ及びサイドエアバッグ装置
JP2014129000A (ja) * 2012-12-28 2014-07-10 Nippon Plast Co Ltd サイドエアバッグ装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02132555U (fr) * 1989-04-12 1990-11-02
JPH0633757U (ja) * 1992-10-12 1994-05-06 豊田合成株式会社 エアバッグ装置のエアバッグ
JP2001277991A (ja) * 2000-03-31 2001-10-10 Takata Corp エアバッグ
JP2009001057A (ja) * 2007-06-19 2009-01-08 Toyoda Gosei Co Ltd サイドエアバッグ装置
WO2013030995A1 (fr) * 2011-08-31 2013-03-07 トヨタ自動車株式会社 Dispositif de coussin de sécurité gonflable latéral d'automobile
WO2013157082A1 (fr) * 2012-04-17 2013-10-24 トヨタ自動車株式会社 Dispositif de coussin de sécurité gonflable latéral pour véhicule
JP2014019320A (ja) * 2012-07-19 2014-02-03 Toyota Motor Corp 車両用サイドエアバッグ装置
JP2016078507A (ja) * 2014-10-10 2016-05-16 トヨタ自動車株式会社 車両用サイドエアバッグ装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021155008A (ja) * 2020-03-30 2021-10-07 芦森工業株式会社 サイドエアバッグ装置
JP7372867B2 (ja) 2020-03-30 2023-11-01 芦森工業株式会社 サイドエアバッグ装置

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JP6748293B2 (ja) 2020-08-26
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