WO2019244763A1 - Dispositif de type coussin de sécurité gonflable - Google Patents

Dispositif de type coussin de sécurité gonflable Download PDF

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Publication number
WO2019244763A1
WO2019244763A1 PCT/JP2019/023456 JP2019023456W WO2019244763A1 WO 2019244763 A1 WO2019244763 A1 WO 2019244763A1 JP 2019023456 W JP2019023456 W JP 2019023456W WO 2019244763 A1 WO2019244763 A1 WO 2019244763A1
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WO
WIPO (PCT)
Prior art keywords
airbag
portions
inflatable
pair
seat
Prior art date
Application number
PCT/JP2019/023456
Other languages
English (en)
Japanese (ja)
Inventor
坂本　浩
匡俊 横田
岡田　典久
伸一 竹内
Original Assignee
Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ株式会社
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 Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ株式会社 filed Critical Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ株式会社
Publication of WO2019244763A1 publication Critical patent/WO2019244763A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/427—Seats or parts thereof displaced during a crash
    • 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
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration

Definitions

  • the present disclosure relates to an airbag device.
  • the airbag in the configuration in which the airbag is deployed from the headrest or the seat back, it is necessary to cross the headrest or the occupant's head in order to deploy the airbag forward of the head, and the airbag may not be deployed properly.
  • the present disclosure aims to provide an airbag device that can stably deploy an airbag.
  • An airbag device includes an inflator and an airbag that is deployed by gas supplied from the inflator, and the airbag is a rear inflatable portion that is deployed on a back side of a seat.
  • a pair of lateral inflatable portions extending forward from both sides of the rear inflatable portion in the seat width direction; and a pair of frontal portions extending from the pair of lateral inflatable portions toward the center and interconnected at the center to cover the front of the occupant.
  • a gas flow path is formed in the airbag in the order of the rear inflation portion, the side inflation portion, and the front inflation portion.
  • an airbag device capable of stably deploying an airbag.
  • FIG. 2 is a perspective view of the airbag device according to the embodiment when the airbag is deployed. It is a side view of the airbag apparatus shown in FIG. It is a front view of the airbag apparatus shown in FIG.
  • FIG. 4 is a schematic diagram showing a schematic configuration of the airbag in FIGS. 1 to 3 in a plan view. It is a top view of the outer panel which comprises an airbag. It is a top view of the inner panel which comprises an airbag. It is a top view of a reinforcement patch which constitutes an airbag.
  • FIG. 3 is a plan view of a base fabric pipe constituting the airbag. FIG. 3 is a side view of the airbag device according to the embodiment when the airbag is stored.
  • FIG. 3 is a plan view of a base fabric pipe constituting the airbag.
  • FIG. 10 is an enlarged view of the vicinity of a storage unit in FIG. 9. It is a figure showing the 1st stage of the deployment procedure of the airbag by the airbag device concerning an embodiment. It is a figure showing the 2nd stage of the deployment procedure of the airbag by the airbag device concerning an embodiment. It is a figure showing the 3rd step of the deployment procedure of the airbag by the airbag device concerning an embodiment. It is a figure showing the 4th step of the deployment procedure of the airbag by the airbag device concerning an embodiment. It is a figure showing the 5th step of the deployment procedure of the airbag by the airbag device concerning an embodiment. It is a schematic diagram which shows the schematic structure of the planar view of the airbag which concerns on a 1st modification. It is a schematic diagram which shows the schematic structure of the planar view of the airbag which concerns on a 2nd modification.
  • the x direction is the front-back direction of the vehicle
  • the x positive direction side is the vehicle front
  • the x negative direction side is the vehicle rear
  • the y direction is the width direction of the vehicle
  • the y positive direction side is the vehicle right side
  • the y negative direction side is the vehicle left side.
  • the z direction is the vertical direction, with the z positive direction side being upward and the z negative direction side being downward.
  • FIG. 1 is a perspective view of the airbag device 10 according to the embodiment when the airbag is deployed.
  • FIG. 2 is a side view of the airbag device 10 shown in FIG.
  • FIG. 3 is a front view of the airbag device 10 shown in FIG.
  • FIG. 4 is a schematic diagram showing a schematic configuration of the airbag 20 in FIGS. 1 to 3 in plan view.
  • the airbag device 10 is mounted on a seat 60 of a vehicle.
  • the seat 60 includes a seat portion 61 on which the occupant D sits, a seat back 62 having a lower end connected to a rear end of the seat portion 61, and a headrest 63 provided at an upper end of the seat back 62.
  • a frame 64 is arranged inside the seat back 62.
  • the seat 60 is also provided with general components mounted on the vehicle seat, such as a seat belt, a tongue, a buckle, and a retractor.
  • a front seat on the right side of the vehicle is illustrated as the seat 60 on which the airbag device 10 is mounted.
  • the y positive direction side is the vehicle outside
  • the y negative direction side is the vehicle inside.
  • the airbag device 10 protects the occupant D from collision in all directions, front, rear, right and left, by the deployed airbag 20 in a state where the occupant D is seated on the seat 60.
  • the airbag 20 is formed in a tubular shape that covers the headrest 63 of the seat 60 and the periphery of the head H of the occupant D seated on the seat 60 and is open at the top and bottom.
  • FIGS. 1 to 4 show a state in which a dummy doll for a collision test is seated on the seat portion 61 of the seat 60 as a model of the occupant D to be protected.
  • the dummy doll is, for example, WorldSID (International Unified Side Impact Dummy: World @ Side @ Impact @ Dummy) AM50 (50th percentile of American adult males).
  • the dummy doll is seated in a standard sitting posture (regular state) determined by the collision test method, and the seat 60 is located at a reference setting position corresponding to the sitting posture.
  • the head of the dummy doll H faces the front of the vehicle (the front side of the seat 60).
  • the airbag device 10 includes an airbag 20, an inflator 30, and a housing 40.
  • the inflator 30 and the housing section 40 will be described later with reference to FIGS.
  • the airbag 20 is configured as a tubular integral bag that is inflated and deployed so as to cover the head H of the occupant D from the front and both left and right sides. More specifically, the airbag 20 has a rear inflation portion 21, a pair of side inflation portions 22A and 22B, and a pair of front inflation portions 23A and 23B.
  • the rear inflatable portion 21 is deployed at a position behind the headrest 63 so as to face the headrest 63 and the seat back 62 as shown in FIGS. As shown in FIG. 4, the rear inflatable portion 21 is connected to the rear end of the pair of lateral inflatable portions 22A and 22B via rear bent portions 74A and 74B at both ends in the y direction. .
  • the rear bent portions 74A and 74B are bent at substantially right angles to the x positive direction side to extend the pair of side expanding portions 22A and 22B forward from the rear expanding portion 21 as shown in FIGS. .
  • the pair of lateral expansion portions 22A and 22B are respectively disposed on the left and right sides of the head H of the occupant D.
  • the pair of lateral expansion portions 22A and 22B are formed such that the front side has a longer dimension in the vertical direction than the rear side and is longer than the lower side.
  • the length of the front side is substantially the same as the vertical dimension of the front expansion portions 23A and 23B.
  • the top parts 29A and 29B which protrude above other parts are provided in the upper part of a pair of side expansion parts 22A and 22B, respectively.
  • the crowns 29A, 29B are formed at a height that can contact the ceiling of the vehicle compartment. For example, as shown in FIG. 3, the ceiling position in the vehicle interior is often higher on the vehicle center side than on the vehicle outer side. In such a case, the height of the crown portion 29A on the vehicle outer side is adjusted according to the ceiling shape. It is formed lower than the central crown 29B. Thereby, the amount of contact between the crowns 29A and 29B and the ceiling can be adjusted to be substantially equal, and the deployment behavior of the airbag 20 can be stabilized.
  • the pair of side inflatable portions 22A, 22B are connected to the pair of front inflatable portions 23A, 23B via front bent portions 75A, 75B at front end portions.
  • the front bent portions 75A and 75B are bent at a substantially right angle toward the center in the y direction, and cover a pair of front expanding portions 23A and 23B in front of the head H of the occupant D as shown in FIGS.
  • the pair of front inflatable portions 23A and 23B are joined to each other along the z-direction at a substantially central position in the y-direction by a central joining portion 76, whereby the front inflatable portions 23A and 23B are arranged in front of the head H of the occupant D,
  • the front of the portion H can be completely closed.
  • the pair of front inflatable portions 23A and 23B are formed in a substantially rectangular shape when viewed from the x direction, and have dimensions in the width direction and the vertical direction that can cover the entire front surface of the head H of the occupant D. ing.
  • the airbag 20 is formed by joining the both ends of the integral bag body by the joining seam by the central joint portion 76, so that the donut which surrounds the head H of the occupant D in all directions in the front-rear direction and the left-right direction. It is formed in a shape.
  • the front inflatable portions 23A and 23B are recessed forward in the y-direction substantially central portions of the front inflatable portions 23A and 23B when viewed from the occupant D side by arranging the center joint portion 76 at the center in the width direction.
  • a front recess 27 is formed.
  • the front recess 27 extends in the z-direction over the area of the central joint 76.
  • the presence of the front recess 27 on the inner surfaces of the front inflatable portions 23A and 23B increases the contact surface of the inner surfaces of the front inflatable portions 23A and 23B with the head H, and also makes the opposing angles diversified.
  • the direction in which the airbag 20 can absorb the impact on the side can be increased, and the occupant D can be protected from a collision in a wider direction.
  • the upper ends of the front inflatable portions 23A and 23B may be located above the top of the head H of the occupant D.
  • the lower end position is provided so as to cover the chest of the occupant D in the present embodiment, but may be a position that can cover at least the head H of the occupant D. It may be shorter than the dimensions of the illustrated embodiment.
  • the pair of front inflatable portions 23A and 23B have restraining portions 24A and 24B and energy absorbing (Energy Absorption: EA) portions 25A and 25B.
  • the constraining portions 24A and 24B bend and extend to the center side from the pair of lateral expansion portions 22A and 22B, respectively.
  • the EA portions 25A, 25B are connected to the center-side ends of the restraining portions 24A, 24B, and extend from the center portion to the front bent portions 75A, 75B on both sides in the y direction, thereby forming the restraining portions 24A, 24B. It is arranged to overlap on the front side.
  • the outer ends of the EA portions 25A, 25B are joined to the pair of lateral inflatable portions 22A, 22B by tip joint portions 77A, 77B provided at the front end of the pair of lateral inflatable portions 22A, 22B.
  • the pair of EA portions 25A, 25B are arranged in the y direction in front of the restraining portions 24A, 24B, and are arranged in parallel with the restraining portions 24A, 24B, and the restraining portions 24A, 24B and the EA portion are arranged.
  • 25A and 25B are arranged in front of the head H of the occupant D in a double manner.
  • the restraint portions 24A and 24B of the front inflatable portions 23A and 23B are arranged in front of the head H of the occupant D and function to protect the front side of the head H in the event of a collision.
  • the EA portions 25A and 25B limit the load applied to the restraint portions 24A and 24B of the airbag 20 when a secondary collision such as the collision of the airbag 20 with a handle or the like in front of the seat is applied to the occupant. It functions to absorb and mitigate energy.
  • the inflator 30 is attached to the inflator insertion port 26 of the rear inflating portion 21, and gas from the inflator 30 is supplied.
  • a gas flow path is formed in the order from the rear inflating portion 21 to one side inflating portion 22A, one restricting portion 24A, and one EA portion 25A.
  • a gas flow path is formed in the order of the inflating portion 22B, the other restraining portion 24B, and the other EA portion 25B.
  • FIG. 5 is a plan view of the outer panel 51 constituting the airbag 20.
  • FIG. FIG. 6 is a plan view of the inner panel 52 constituting the airbag 20.
  • FIG. FIG. 7 is a plan view of the reinforcing patch 53 constituting the airbag 20.
  • FIG. FIG. 8 is a plan view of the base fabric pipe 54 constituting the airbag 20.
  • FIG. 5 to FIG. 9 are exploded views of each part constituting the airbag 20.
  • the airbag 20 includes an outer panel 51, an inner panel 52, a reinforcing patch 53, and a base cloth pipe.
  • the outer panel 51 and the inner panel 52 are overlapped and sewn along the outer peripheral sewing line 56 at the peripheral edge to form an integral bag.
  • the outer panel 51 and the inner panel 52 have a rear inflatable portion 21 in the center, a pair of lateral inflatable portions 22A, 22B on both sides, and a pair of front inflatable portions 23A, 23B on both sides. EA portions 25A and 25B are arranged further outside.
  • the outer panel 51 forms an outer surface facing outward when the airbag 20 is deployed
  • the inner panel 52 forms an inner surface facing the center head H side when the airbag 20 is deployed.
  • a plurality of circular sewing portions 55A and 55B sewn in a circular shape are provided between the rear expanding portion 21 and the lateral expanding portions 22A and 22B, and join the outer panel 51 and the inner panel 52. Since the bending of the bag body is promoted by these circular stitch portions 55A and 55B, the rear bent portions 74A and 74B are formed. Further, by partially joining the outer panel 51 and the inner panel 52 with the circular stitch portions 55A and 55B, the capacity of the airbag 20 can be reduced.
  • a left sewing line 58 and a right sewing line 59 are provided between the lateral expansion portions 22A, 22B of the outer panel 51 and the restraining portions 24A, 24B, thereby forming front bending portions 75A, 75B. .
  • a front sewing line 57A sewn annularly at the center in the height direction is provided between the restraining portion 24A and the EA portion 25A, and joins the outer panel 51 and the inner panel 52.
  • a front sewing line 57B sewn annularly at the center in the height direction is provided between the restraining portion 24B and the EA portion 25B, and joins the outer panel 51 and the inner panel 52.
  • the area surrounded by the front sewing lines 57A and 57B is a non-inflating portion that does not inflate even when the airbag 20 is operated. Both sides in the height direction of the non-inflated portion serve as flow paths for passing gas from the restraining portions 24A, 24B to the EA portions 25A, 25B.
  • a plurality of (three in this embodiment) circular sewing portions 55E are provided at substantially equal intervals along the height direction in a region surrounded by the front sewing lines 57A and 57B.
  • the circular sewing portion 55E sewes the outer panel 51, the inner panel 52 on the side of the front expanding section 23A, the outer panel 51 on the side of the front expanding section 23B, and the inner panel 52, and joins them together. ing.
  • a central joint portion 76 is formed between the pair of front inflatable portions 23A and 23B.
  • ⁇ Sewing lines 58 and 59 are also provided at outer end portions of the EA portions 25A and 25B, respectively, and are joined to the distal end joining portions 77A and 77B.
  • a pair of circular sewing patches 55C, 55D are provided along the front-rear direction at substantially the center in the height direction of the lateral expansion portions 22A, 22B.
  • circular sewing patches 55C and 55D circular patches are arranged outside the outer panel 51 and the inner panel 52, and the patches are sewn between the outer panel 51 and the inner panel 52, and the outer panel 51 and the inner panel 52 are sewn.
  • the panel 52 is joined.
  • the circular sewing patches 55C and 55D can reinforce the sewn portion by arranging the patches on the outside.
  • a pair of circular sewing patches 55C and 55D provided along the front and rear direction is sewn linearly along the front and rear direction, thereby forming the side expansion portions 22A and 22B.
  • the thickness of the airbag 20 when inflated is regulated.
  • the circular stitching patches 55C are also provided on the upper side and the lower side of the pair of circular stitching patches 55C on the rear side in the front-rear direction. That is, an area where three circular sewing patches 55C are provided in the height direction is formed. In this region, the thickness when the airbag 20 is inflated is further suppressed as compared with the other regions.
  • the side inflating portion 22A is disposed outside the vehicle, and a part thereof faces the B pillar.
  • a plurality of (three in this embodiment) circular sewing patches 55C are arranged along the height direction at a position facing the B pillar in the side inflated portion 22A, so that the The thickness of a portion of the inflatable portion 22A facing the B pillar is locally suppressed so that interference between the airbag 20 and the B pillar can be avoided.
  • a plurality (two in the present embodiment) of circular sewing patches 55F and 55G are provided along the height direction at a substantially central portion in the width direction of the EA portions 25A and 25B, and the outer panel 51 and the inner panel 52 are provided. Are joined. This regulates the thickness of the EA portions 25A and 25B in the front-rear direction when the airbag is inflated.
  • the circular sewing portions 55A, 55B, and 55E may be provided with circular sewing patches.
  • the reinforcing patch 53 has the same shape as that shown in FIG. 7, and is disposed outside the rear inflating portion 21 of the outer panel 51 and the inner panel 52, and is connected to the outer panel 51 by a patch sewing line 73. Each is joined to the inner panel 52.
  • the base fabric pipe 54 is inserted into the inflator insertion opening 26 in a state where the base fabric pipe 54 is attached to the distal end of the inflator 30.
  • the inflator insertion opening 26 is provided in the rear inflatable portion 21 of the airbag 20 as shown in FIGS.
  • the sewing order of the airbag 20 is, for example, (1) outer peripheral sewing line 56, (2) front sewing line 57 (central joint portion 76), (3) left sewing line 58 (tip joint portion 77B), and (4) right side.
  • the order of the sewing line 59 (the distal end joint portion 77A) can be set.
  • FIG. 9 is a side view of the airbag device 10 according to the embodiment when the airbag is housed.
  • FIG. 10 is an enlarged view of the vicinity of the storage section 40 in FIG.
  • the airbag 20 is stored in the storage section 40 in a folded state.
  • the accommodation section 40 is attached to a frame 64 inside the seat back 62 and stored in the seat back 62, for example.
  • the accommodation section 40 is disposed so as to open upward along the direction in which the seat back 62 extends.
  • the inflator 30 is disposed below the storage section 40, and is inserted into the inflator insertion opening 26 of the airbag 20 from below the storage section.
  • the inflator insertion opening 26 penetrates, for example, the bottom wall of the housing section 40 and advances downward, and the inflator 30 is inserted.
  • the inflator 30 is, for example, of a combustion type or a cold gas type, and its operation is controlled by a control device such as a vehicle ECU.
  • the inflator 30 supplies gas generated by the operation into the airbag 20 through the inflator insertion port 26.
  • the inflator 30 is, for example, a cylinder-type inflator, and is arranged with the height direction of the seat as a longitudinal direction.
  • the inflator 30 is fixed to a bracket 31 fixed to a frame 64 by using a band 32, for example, as shown in FIG.
  • a band 32 for example, as shown in FIG.
  • two inflator insertion ports 26 are provided in the rear inflatable portion 21 and two inflators 30 are installed as shown in FIG. 4, but the number of inflators 30 may be one or two. A larger number may be used.
  • the accommodation section 40 is made of, for example, resin and is formed in a box shape, and has an upper side opened.
  • the folded airbag 20 is accommodated in the box-shaped internal space of the accommodation section 40.
  • the storage section 40 is stored above the seat back 62 when the airbag device 10 is not operated. When the airbag device 10 is operated, the surface of the seat back 62 is broken by the inflation pressure of the airbag 20, so that the airbag 20 can be inflated and deployed to the outside.
  • the airbag 20 housed in the housing unit 40 is configured to include a roll folded part 71 folded in a roll shape and a bellows folded part 72 folded in a bellows shape.
  • the roll folded portion 71 is folded into a roll so as to wind upward from the front inflatable portions 23A, 23B side to the upper surface side of the lateral inflatable portions 22A, 22B in the deployed state of the airbag 20.
  • the seat is folded so that it can be easily deployed toward the front of the seat when inflated and deployed.
  • the bellows folded portion 72 is accommodated in a position above the roll folded portion 71 of the accommodation portion 40 in a state where the rear inflating portion 21 in the deployed state of the airbag 20 is folded in a bellows shape. It is easy to deploy before the part 71.
  • the inflator insertion opening 26 of the airbag 20 is not included in the roll folded portion 71 and the bellows folded portion 72, but is disposed below the roll folded portion 71, and the inflator 30 is inserted.
  • FIG. 10 for convenience of schematically showing the storage state of the roll folded portion 71 and the bellows folded portion 72, it is illustrated as branched from the inflator insertion opening 26 to both the roll folded portion 71 and the bellows folded portion 72.
  • the inflator insertion port 26 is provided in the rear inflatable portion 21 as described above, it is actually connected only to the bellows folded portion 72. For this reason, the roll folding part 71 and the bellows folding part 72 can supply gas to the bellows folding part 72 above first.
  • the roll folding section 71 supplies the gas in the order of the side inflating sections 22A and 22B and the front inflating sections 23A and 23B so that the side inflating sections 22A and 22B are positioned above the head H of the occupant D. And the front inflatable portions 23A and 23B are inflated and deployed at a position forward of the head H of the occupant D.
  • FIGS. FIG. 11 to FIG. 15 are diagrams respectively showing first to fifth stages of the deployment procedure of the airbag 20 by the airbag device 10 according to the embodiment.
  • the airbag 20 is folded and stored in the storage portion 40 in the seed bag. Then, when a shock equal to or more than a predetermined threshold is received due to a vehicle collision or the like, the inflator 30 is operated by the ECU, and gas is started to be supplied from the inflator 30 to the airbag 20.
  • the gas is first supplied to the bellows folded portion 72 at the upper part and starts to expand.
  • the bellows folded portion 72 breaks the surface of the seat back 62 while developing the bellows shape, advances to the seat rear side, and starts to expand upward and to the seat rear side.
  • the rear expanding portion 21 is formed. Thereafter, when the gas starts to be supplied to the roll folding section 71, the roll folding section 71 starts to expand from the state of being folded in the roll shape so as to be developed. At this time, the roll folding portion 71 receives a reaction force from the rear expanding portion 21 deployed on the seat rear side to the front and upper sides of the vehicle due to the expanding force generated by the expansion. By this reaction force, the roll folding part 71 is deployed so as to get over the headrest 63 diagonally upward. That is, the rear inflation portion 21 which is first developed functions as a base for promoting the deployment direction of the roll folding portion 71 forward. Moreover, since the roll folding part 71 is wound upward, as described above, it is rotated downward and deployed.
  • the expansion of the roll folding portion 71 proceeds, and first, the side expansion portions 22A and 22B start to expand. The lateral expansion portions 22A and 22B expand upward, and the remaining portion of the roll folding portion 71 is deployed forward along the ceiling of the vehicle.
  • the side inflatable portions 22A and 22B are formed from the roll folding portion 71 to cover the side of the head H of the occupant D.
  • the remaining portion of the roll folded portion 71 has advanced forward from the head H, and the top portions 29A and 29B of the side inflatable portions 22A and 22B abut against the ceiling, and the upward force due to the reaction force from the ceiling.
  • the deployment direction is switched downward and begins to deploy downward from the vehicle ceiling.
  • the front inflated portions 23A and 23B are formed from the roll folded portion 71, and also cover the front portion of the head H of the occupant D, whereby the occupant D can move in all directions in the front-rear and left-right directions.
  • An overlying airbag 20 is formed.
  • the airbag device 10 of the present embodiment includes an inflator 30 and an airbag 20 that is deployed by gas supplied from the inflator 30.
  • the airbag 20 includes a rear inflatable portion 21 deployed on the back side of the seat 60, a pair of side inflatable portions 22A and 22B extending forward from both sides in the seat width direction of the rear inflatable portion 21, and a pair of side inflatable portions 22A. , 22B extending to the center side and connected to each other at the center to cover the front of the occupant D.
  • a gas flow path is formed in the order of the rear inflating portion 21, the side inflating portions 22A and 22B, and the front inflating portions 23A and 23B.
  • the rear inflatable portion 21 when the airbag 20 is inflated and deployed when the airbag device 10 is operated, the rear inflatable portion 21 can be first deployed. Accordingly, as described with reference to FIG. 12, the rear inflatable portion 21 is first developed and the rear inflatable portion 21 functions as a base for promoting the deployment direction of the remaining portion to the front. It is possible to provide the inflating airbag 20 with an inflation force and a deployment direction sufficient to pass over the head H of the occupant D. Further, by forming the gas flow paths in the order of the side inflating portions 22A and 22B and the front inflating portions 23A and 23B, as described with reference to FIG. 14, the side inflating portions 22A and 22B are formed first.
  • the front inflatable portions 23A and 23B can be deployed. Thereby, the airbag 20 can be deployed so as to reliably exceed the headrest 63 and the head H of the occupant D. As a result, the airbag device 10 of the present embodiment can stably deploy the airbag 20.
  • the airbag 20 is configured such that the gas from the inflator is supplied to the rear inflatable portion 21, and the rear inflatable portion 21 is located ahead of the side inflatable portions 22A and 22B and the front inflatable portions 23A and 23B. Will be expanded to.
  • the rear inflatable portion 21 can be more reliably deployed earlier than the side inflatable portions 22A, 22B and the front inflatable portions 23A, 23B, and the deployment operation of the airbag 20 can be further stabilized.
  • the front inflatable portions 23A, 23B extend from the pair of side inflatable portions 22A, 22B to the center side and are mutually connected at the center to form a pair of restraining portions that cover the front of the occupant. 24A and 24B, and a pair of energy absorption (EA) portions 25A and 25B extending forward and left and right outward from the pair of restraining portions 24A and 24B, respectively, and covering the front surfaces of the restraining portions 24A and 24B.
  • EA energy absorption
  • the front inflatable portions 23A and 23B can alleviate the impact of the occupant D at the time of the collision by the restraining portions 24A and 24B, and absorb the impact at the time of the collision with the steering wheel in front of the seat by the EA portions 25A and 25B.
  • the occupant D can be prevented from being transmitted to the occupant D, and the occupant D can be protected twice.
  • the shape of the airbag 20 of the airbag device 10 of the present embodiment can be paraphrased as follows. That is, the airbag 20 includes a rear inflatable portion 21 deployed on the rear side of the seat 60, a pair of side inflatable portions 22 ⁇ / b> A, 22 ⁇ / b> B extending forward from both sides of the rear inflatable portion 21 in the seat width direction, and a pair of side inflatable portions. Front inflatable portions 23A and 23B connected to the portions 22A and 22B to cover the front of the occupant D. The front inflatable portions 23A and 23B are provided with stitches (front sewing) extending along the up-down direction (z direction) of the seat 60 at substantially the center of the seat 60 in the width direction (y direction) of the inner surface on the occupant D side.
  • a line 57 is provided, and the seam forms the front recess 27 which is recessed forward. More specifically, the pair of front inflatable portions 23A and 23B are joined to each other along the z direction by joining stitches forming a central joint portion 76 at a substantially central position in the y direction, thereby forming the front concave portion 27. Have been.
  • the contact surfaces of the inner surfaces of the front inflatable portions 23A and 23B of the airbag 20 with the head H are widened, and the opposing angles are also diversified, so that the airbag 20 can absorb shock at the vehicle front side.
  • the direction can be increased, and the occupant D can be protected from a collision in a wider direction.
  • the airbag 20 is formed in the donut shape shown in FIG. 4 by joining the widthwise centers of the pair of front inflatable portions 23A and 23B by joining stitching, so that the airbag 20 is supplied from the inflator 30.
  • the left and right gas can be easily spread evenly from side to front of the airbag 20. Thereby, the deployment of the airbag 20 can be further stabilized.
  • FIG. 16 is a schematic diagram illustrating a schematic configuration of the airbag 120 according to a first modification of the present embodiment in plan view.
  • FIG. 17 is a schematic diagram illustrating a schematic configuration of an airbag 220 according to a second modification of the present embodiment in plan view.
  • the shape of the airbag 20 is not limited to the above embodiment.
  • the second EA portions 28A and 28B may be provided further on the distal end side of the EA portions 25A and 25B.
  • the front inflatable portions 123A and 123B expand in a substantially triangular shape when viewed from above.
  • the front inflatable portions 223A and 223B may not have the EA portions 25A and 25B.
  • the configuration in which the storage unit 40 of the airbag device 10 is stored in the seatback 62 has been described, but the configuration in which the storage unit 40 is stored in the headrest 63 may be used.
  • the airbag 20 has a structure in which a plurality of panels are sewn and integrally formed.
  • the airbag 20 may be a so-called one-piece woven (OPW) type.
  • Airbag apparatus 20 120, 220 Airbag 21 Rear inflation part 22A, 22B Side inflation part 23A, 23B, 123A, 123B, 223A, 223B Front inflation part 24A, 24B Restraining part 25A, 25B EA part 26 Inflator insertion port 27 Front recess 28A, 28B 2nd EA part 29A, 29B Head part 30 Inflator 40 Housing part 71 Roll folding part 72 Bellows folding part 60 Seat 61 Seat 62 Seat back 63 Headrest 64 Frame D Occupant H Head

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Air Bags (AREA)
  • Seats For Vehicles (AREA)

Abstract

L'invention concerne un dispositif de type coussin de sécurité gonflable (10) comprenant : un dispositif de gonflage (30) ; et un coussin de sécurité gonflable (20) qui est déployé au moyen d'un gaz fourni par le dispositif de gonflage (30). Le coussin de sécurité gonflable comprend : une partie de gonflage arrière (21) qui se déploie au niveau du côté surface arrière d'un siège (60) ; une paire de parties de gonflage latérales (22A, 22B) qui se déploient vers l'avant à partir des côtés respectifs de la partie de gonflage arrière (21) dans le sens de la largeur du siège (60) ; et une paire de parties de gonflage avant (23A, 23B) qui s'étendent respectivement à partir des parties de gonflage latérales (22A, 22B) vers le centre et se connectent l'une à l'autre au niveau du centre, recouvrant l'avant d'un passager. Un canal d'écoulement de gaz est formé dans le coussin de sécurité gonflable (20) dans l'ordre suivant : une partie de gonflage arrière (21), des parties de gonflage latérales (22A, 22B) et des parties de gonflage avant (23A, 23B).
PCT/JP2019/023456 2018-06-22 2019-06-13 Dispositif de type coussin de sécurité gonflable WO2019244763A1 (fr)

Applications Claiming Priority (2)

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JP2018-119021 2018-06-22
JP2018119021A JP7100509B2 (ja) 2018-06-22 2018-06-22 エアバッグ装置

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Cited By (4)

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US20200189513A1 (en) * 2018-12-14 2020-06-18 Key Safety Systems, Inc. Far side crash mitigation
US20210339697A1 (en) * 2020-05-01 2021-11-04 Subaru Corporation Occupant protection device for vehicle
US11285903B2 (en) * 2019-03-12 2022-03-29 Honda Motor Co., Ltd. Airbag and occupant restraint device
WO2022255510A1 (fr) * 2021-06-02 2022-12-08 아우토리브 디벨롭먼트 아베 Dispositif de coussin de sécurité gonflable de véhicule

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DE102020100450B4 (de) * 2020-01-10 2021-08-05 Bayerische Motoren Werke Aktiengesellschaft Fahrzeugsitz mit einer Sitzanlage und mit einer Airbagvorrichtung
KR20230073295A (ko) 2020-09-28 2023-05-25 아우토리브 디벨롭먼트 아베 에어백 장치
JP2022188684A (ja) 2021-06-09 2022-12-21 トヨタ自動車株式会社 シート搭載型エアバッグ装置
JP2022188683A (ja) 2021-06-09 2022-12-21 トヨタ自動車株式会社 シート搭載型エアバッグ装置
JP2023009411A (ja) 2021-07-07 2023-01-20 トヨタ自動車株式会社 車両用乗員保護装置
WO2023282017A1 (fr) * 2021-07-09 2023-01-12 オートリブ ディベロップメント エービー Dispositif de coussin de sécurité gonflable
JP2023032981A (ja) * 2021-08-27 2023-03-09 トヨタ自動車株式会社 車両用エアバッグ装置
JP2024058410A (ja) 2022-10-14 2024-04-25 トヨタ自動車株式会社 エアバッグ装置及び乗員保護装置
JP2024058408A (ja) 2022-10-14 2024-04-25 トヨタ自動車株式会社 エアバッグ装置及び乗員保護装置
JP2024058404A (ja) 2022-10-14 2024-04-25 トヨタ自動車株式会社 エアバッグ装置及び乗員保護装置
JP2024058412A (ja) 2022-10-14 2024-04-25 トヨタ自動車株式会社 エアバッグ装置及び乗員保護装置
JP2024058409A (ja) 2022-10-14 2024-04-25 トヨタ自動車株式会社 エアバッグ装置及び乗員保護装置

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JP2003220917A (ja) * 2002-01-31 2003-08-05 Honda Motor Co Ltd エアバッグ装置
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JP2017100688A (ja) * 2015-12-04 2017-06-08 トヨタ自動車株式会社 乗員保護装置

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US20200189513A1 (en) * 2018-12-14 2020-06-18 Key Safety Systems, Inc. Far side crash mitigation
US11285903B2 (en) * 2019-03-12 2022-03-29 Honda Motor Co., Ltd. Airbag and occupant restraint device
US20210339697A1 (en) * 2020-05-01 2021-11-04 Subaru Corporation Occupant protection device for vehicle
US11718258B2 (en) * 2020-05-01 2023-08-08 Subaru Corporation Occupant protection device for vehicle
WO2022255510A1 (fr) * 2021-06-02 2022-12-08 아우토리브 디벨롭먼트 아베 Dispositif de coussin de sécurité gonflable de véhicule

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