WO2008018216A1 - Dispositif d'airbag - Google Patents

Dispositif d'airbag Download PDF

Info

Publication number
WO2008018216A1
WO2008018216A1 PCT/JP2007/059618 JP2007059618W WO2008018216A1 WO 2008018216 A1 WO2008018216 A1 WO 2008018216A1 JP 2007059618 W JP2007059618 W JP 2007059618W WO 2008018216 A1 WO2008018216 A1 WO 2008018216A1
Authority
WO
WIPO (PCT)
Prior art keywords
airbag
inflator
bag
air bag
airbag device
Prior art date
Application number
PCT/JP2007/059618
Other languages
English (en)
Japanese (ja)
Inventor
Shinichi Sugimoto
Takeshi Sone
Original Assignee
Takata Corporation
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 Takata Corporation filed Critical Takata Corporation
Publication of WO2008018216A1 publication Critical patent/WO2008018216A1/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
    • B60R21/20—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
    • B60R21/26—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
    • 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
    • B60R2021/0002—Type of accident
    • B60R2021/0018—Roll-over
    • 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
    • B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
    • B60R2021/0039—Body parts of the occupant or pedestrian affected by the accident
    • B60R2021/0048—Head
    • 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
    • B60R21/261—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 other than bag structure to diffuse or guide inflation fluid
    • B60R2021/2612—Gas guiding means, e.g. ducts

Definitions

  • the present invention relates to an airbag device equipped in a vehicle such as an automobile.
  • an airbag device for a driver's seat that is inflated and deployed from the center of rotation of the steering wheel to the driver's side
  • an airbag for a passenger's seat that is inflated and deployed on the passenger's seat side of an instrument panel.
  • Various airbag devices are used to restrain the occupant's body during a collision.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2002-3701 1
  • an airbag composed of a bag body combined with a base fabric is stored in a backrest (or headrest) of a vehicle seat, and pressure fluid from an inflator is supplied to the airbag in an emergency.
  • a backrest or headrest
  • pressure fluid from an inflator is supplied to the airbag in an emergency.
  • An object of the present invention is to provide an airbag device capable of improving the deployment performance of the airbag during inflation.
  • the first invention provides an airbag that restrains the head of an occupant who is deployed and seated on a seat, and an airbag that generates pressure fluid to be supplied to the airbag.
  • An inflator comprising: a inflator; a horizontal part in the bag that is inserted into the airbag and extends substantially horizontally in the airbag; and a plurality of fluid supply holes provided in the horizontal part in the bag And a fluid supply pipe for introducing the pressure fluid generated from the air bag into the airbag through the fluid supply hole.
  • the fluid supply pipe extending in the substantially horizontal direction is inserted into the airbag that restrains the head of the passenger, and the pressure fluid generated from the inflator is A large amount of pressure fluid supplied from the inflator is efficiently introduced into the airbag through a plurality of fluid supply holes provided in the horizontal portion in the bag.
  • the deployment performance of the airbag can be improved.
  • a second invention is characterized in that, in the first invention, a retainer for folding and storing the airbag is provided.
  • the airbag housed in the retainer can be folded in a compressed state along the horizontal portion of the fluid supply pipe, and the air is introduced by the pressure fluid introduced from the fluid supply pipe.
  • the bag can be smoothly inflated.
  • the fluid supply pipe has a bag outer horizontal portion extending in a substantially horizontal direction outside the retainer, and has a substantially U-shape. It is characterized by that.
  • the fluid supply pipe extending in the substantially horizontal direction outside the retainer has a substantially U-shape, so that the horizontal portion outside the bag of the fluid supply pipe is, for example, a retainer. It can be arranged close to the lower surface of the na.
  • a fourth invention provides the inflator according to any one of the first to third inventions described above.
  • the axial direction is substantially vertical.
  • the inflator is disposed so that the axial direction is substantially vertical, it is possible to attach to the inside of the vertical side plate that forms the frame serving as the skeleton of the seat.
  • a fifth invention is characterized in that, according to any one of the first to third inventions, the inflator is arranged so that an axial direction thereof is substantially horizontal.
  • the inflator is arranged so that the axial direction is substantially horizontal. Therefore, the inflator can be disposed close to the vicinity of the lower surface of the retainer. Thereby, the airbag device can be made compact.
  • FIG. 1 shows an airbag apparatus according to an embodiment of the present invention, in which FIG. 1 (a) is a non-operating airbag apparatus, and FIG. 1 (b) is an automobile showing an operating airbag apparatus.
  • Fig. 2 is a schematic side view of the seat 1
  • Fig. 2 is a perspective view showing a state in the middle of inflation of the airbag provided in the airbag device of Fig. 1
  • Fig. 3 is a state in which the airbag device of Fig. 1 is attached to the seat frame.
  • FIG. 4 is an exploded perspective view showing an assembly and attachment procedure of the airbag device of FIG. 1
  • FIG. 5 is a cross-sectional view showing a state in which gas is supplied from the first bag to the second bag.
  • the seat (seat) 1 includes a seat portion 1A on which an occupant 2 is seated, and a backrest portion 1B that protrudes upward from the seat portion 1A to support the back of the seated occupant 2 .
  • a headrest 1C is attached to the top of the backrest 1B.
  • the seat back 1B is equipped with an airbag device 10 for restraining the head 2A of the occupant 2 when the vehicle rolls over due to an accident.
  • the airbag device 10 includes an airbag 11 as shown in FIG.
  • the airbag 11 is in force with the first bag 11A and the two second bags 11B superimposed on the first bag 11A, and the second bag 11B has non-inflatable portions on both the left and right sides of the first bag 11A. (In other words, the gas does not flow in) It is connected in a manner connected via the connecting part 11C.
  • FIG. 2 shows a state where the airbag 11 is being deployed. That is, the gas (pressure fluid) from the inflator 13 (see FIG. 3) flows into the first bag 11A.
  • This airbag 11 is provided with a series of two base fabrics corresponding to the first bag 11A and the two second bags 11B on the left and right sides of the airbag 11. It is formed by sewing in a bag shape.
  • the airbag device 10 includes the airbag 11 and the airbag 11. And the inflator 13 connected to the airbag 11 via a connection pipe 20.
  • a control circuit (not shown) is connected to the inflator 13, and the control circuit detects whether a vehicle collision or rollover has occurred. Start the attached initiator and ignite the inflator 13.
  • the airbag device 10 is normally housed in the airbag 11 cartridge 12 and folded in a non-operating state.
  • the inflator 13 is ignited by the control circuit, and the airbag 11 is inflated and extended forward from the retainer 12 as shown in FIG. 1st bag 1 1A is deployed between the roof 3 of the car and the head 2A of the occupant 2 (in the case of an open car, etc., deployed above the head 2A), and the occupant's head 2A moves upward. Is restrained.
  • FIG. 1 (a) the airbag device 10 is normally housed in the airbag 11 cartridge 12 and folded in a non-operating state.
  • the inflator 13 is ignited by the control circuit, and the airbag 11 is inflated and extended forward from the retainer 12 as shown in FIG. 1st bag 1 1A is deployed between the roof 3 of the car and the head 2A of the occupant 2 (in the case of an open car, etc., deployed above the head 2A), and the occupant's head 2A moves upward. I
  • the second bag 11B on the left and right sides of the first bag 11A is inflated, and the base portion of the first bag 11A is pushed forward so that the first bag 11A
  • the head 2A of the occupant 2 is pushed forward to bend forward and act to reduce the burden on the neck.
  • the airbag device 10 is provided at an upper position in the backrest portion 1B by being attached to an upper portion of a seat frame 14 that is a skeleton member of the seat 1.
  • the seat frame 14 includes a pair of side plates 14A on the left and right sides in the vehicle direction, and a cross member 14B that connects the upper portions of the side plates 14A at a rearward position in the back portion 1B of the seat 1 on both sides.
  • a plate (not shown) protruding forward from the lower part of the plate 14A is provided in the seat 1A.
  • the base end side located on the lower side of the airbag 11 is provided with a mounting piece l ib on the lower side, and a gas supply port 11a is projected on the right side surface thereof.
  • the airbag 11 is also compressed in the upward force and accommodated in the retainer 12 in a state of being folded horizontally, and the mounting piece l ib is removed from the bottom wall through the opening of the retainer 12.
  • the gas supply port 11a is lowered along the extended attachment portion 12c, and the gas supply port 11a is made to pass outward from a through hole 15 formed on the right side surface of the retainer 12 during the lowering.
  • the mounting portion l ib of the airbag 11 is sandwiched between the two pressing pieces 26 and the mounting portion 12c of the retainer 12, and is provided in the four bolt holes 25 provided in the mounting portion 12c and each pressing piece 26.
  • Two Bolts 21a are inserted into the respective bolt holes 27, and nuts 21b are screwed into the Bonoleto 21a to be fixed to the mounting portion 12c.
  • the retainer 12 is used to unscrew the mounting pieces 12a and 12b as L-shaped brackets fixed to the left and right side walls by riveting or the like 24 It is attached to the cross men 14B (see Fig. 3) by the Bonole 23 inserted in the.
  • the right side force of the airbag 11 and the protruding gas supply port 11a constitute a fluid supply pipe of the inflator 13 attached substantially vertically inside the one side frame 14A of the seat frame 14.
  • a metal connection pipe 20 is connected.
  • the connecting pipe 20 extends substantially horizontally inside the airbag 11 through the gas supply port 11a, and has an in-bag horizontal portion 20a having a plurality of fluid supply holes H on the side surface, and outside the retainer.
  • a U-shaped bent portion 20b bent into a substantially U shape, a bag outer horizontal portion 20c folded back horizontally by the bent portion 20b, and bent vertically downward from the bag outer horizontal portion 20c and connected to the inflator 13 at the lower end portion. It is composed of a vertical portion 20d having a connection port.
  • a metal clamp band 30 (see Fig. 4) or the like placed over the gas supply port 11a inserted through the horizontal portion 20a in the bag 11 into the airbag 11 is caulked. Type 20 is connected. Further, the connection port on the lower end side is connected to the connection end 13a of the inflator 13 by screw fastening or caulking or the like via a connection fitting 20e fitted on the outer periphery of the connection pipe 20.
  • the inflator 13 is attached to the one side frame 14A of the seat frame 14 by the attachment member 31 so that the axial direction is substantially vertical.
  • the mounting member 31 sandwiches the body of the inflator 13 from both sides with a pair of semicircular arc-shaped plates 31A, 31B provided with flanges 31d at both ends, and the rivet 31a of the flange 31d of one plate 31A is placed on the other plate. It is attached to the inflator 13 by inserting into the rivet hole 31b of the flange 31d of the flange 31B and caulking. It should be noted that normal bolts and screws can be used instead of rivets. In this way, the inflator 13 supported by the mounting member 31 is side-mounted by the bolt 32 (see FIG.
  • connection terminal 34 drawn from the rear end of the inflator 13 is connected to the control circuit (not shown). Force the airbag device Is assembled.
  • the airbag apparatus 10 of the present embodiment when the gas from the inflator 13 is supplied to the airbag 11, as shown in FIG. In addition to being supplied to one bag 11A, it is supplied to the left and right second bags 11B through each communication passage 11D. At this time, gas is introduced into the first bag 11A at once from the plurality of fluid supply holes H of the horizontal portion 20a in the bag of the connection pipe 20 deeply inserted into the first bag 11A through the gas supply port 11a. As a result, a large amount of gas supplied from the inflator 13 is efficiently introduced into the first bag 11A, and the deployment performance of the airbag can be improved.
  • the airbag 11 is folded and stored in the retainer 12.
  • the airbag 11 accommodated in the retainer 12 can be folded along the in-bag horizontal portion 20a of the connecting pipe 20, and the gas can be smoothly introduced from the connecting pipe 20 to smoothly move the airbag 11. Can bulge out.
  • the connection pipe 20 has the bag outer horizontal portion 20c extending substantially horizontally in the outer portion of the retainer 12, and has a substantially U-shape.
  • the configuration is as follows. Thereby, the horizontal portion 20c outside the bag of the connection pipe 20 is disposed close to the vicinity of the lower surface of the retainer 12, and the installation space of the airbag device 10 in the backrest portion 1B can be reduced in size. Further, as described above, the connecting pipe 20 extending in the substantially horizontal direction from the horizontal portion 20a in the bag to the outside of the retainer 12 is bent in a substantially U shape, thereby allowing the horizontal direction from the gas supply port 11a. Insert the connection pipe 20 into the airbag. By simply adjusting the insertion amount in the axial direction, the positioning of the connection port 13 at the lower end of the vertical portion 20d with respect to the connection end 13a of the inflator 13 arranged in the substantially vertical direction is facilitated. Work can be improved.
  • the inflator 13 is disposed such that the axial direction thereof is substantially vertical. As a result, the force S for firmly attaching the inflator 13 to the inside of the vertical side plate 14A forming the seat frame 14 serving as the skeleton of the seat 1 can be achieved.
  • the inflator 13 is an example in which the axial direction is arranged in the vertical direction.
  • the force described above is not limited to this direction.
  • the retainer can be arranged at an optimum angle corresponding to the configuration and arrangement of the airbag or the piping of the fluid supply pipe.
  • FIG. 6 is a perspective view showing a state in which the inflator is attached to the seat frame so that the axial direction is substantially horizontal
  • FIG. It is a disassembled perspective view which shows the assembly and attachment procedure of an airbag apparatus. Note that the same components as those described above are denoted by the same reference numerals and description thereof is omitted.
  • the inflator is attached to the seat frame so that the axial direction is substantially horizontal. That is, in FIG. 6, an airbag device 38 is connected to a gas supply port 11a protruding from the right side surface of the airbag 11, and an inflator 13 attached horizontally to one side frame 14A of the seat frame 14. Both ends of the metal connection pipe 40 constituting the fluid supply pipe are connected.
  • the connecting pipe 40 extends in the horizontal direction inside the airbag 11 through the gas supply port 11a, and has a horizontal part 40a in the bag having a plurality of fluid supply holes H on the side surface. It is composed of a U-shaped bent portion 40b that is bent into a substantially U-shape by bending outside the retainer 12, and a bag outer horizontal portion 40c that is folded back horizontally by the bent portion 40b. The left end of the bag outer horizontal portion 40c The part has a connection port connected to the inflator 13 disposed in the horizontal direction.
  • This inflator 13 is a bracket 34 in which the mounting member 31 having the body portion sandwiched from both sides by the same mounting member 31 as in the above embodiment is mounted horizontally on the inner wall surface of one side frame 14A of the seat frame 14. It is fixed on the mounting surface 34 so that the axial direction is substantially horizontal.
  • the airbag device 38 of the present modified example the same effect as that of the above-described embodiment can be obtained, and the airbag device 38 is attached to one side frame 14A of the seat frame 14 in the horizontal direction. Since the inflator 13 is attached to the bracket 34 via the attachment member 31 so that the axial direction of the inflator 13 is horizontal, the inflator 13 can be disposed close to the retainer 12. Thereby, the airbag device 38 can be made compact.
  • FIG. 1 is an air bag device according to an embodiment of the present invention, where (a) is a non-operating air bag device, and (b) is a schematic side view of an automobile seat showing an air bag device operating.
  • FIG. 2 is a perspective view showing a state in the middle of inflation of the airbag provided in the airbag device of FIG. 1.
  • FIG. 3 is a perspective view showing a state where the airbag device of FIG. 1 is attached to a seat frame.
  • FIG. 4 is an exploded perspective view showing a procedure for assembling and attaching the airbag device of FIG. 1.
  • FIG. 4 is an exploded perspective view showing a procedure for assembling and attaching the airbag device of FIG. 1.
  • FIG. 5 is a cross-sectional view showing a state in which gas is supplied from the first bag to the second bag.
  • FIG. 6 is a perspective view showing a modification of the airbag device and showing a state in which the inflator is attached to the seat frame so that the axial direction is substantially horizontal.
  • FIG. 7 is an exploded perspective view showing a procedure for assembling and attaching the airbag device of FIG. 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)
  • Seats For Vehicles (AREA)

Abstract

Il est difficile de créer un dispositif d'airbag dans lequel la performance de développement du dispositif d'airbag pendant son gonflage est améliorée. L'invention concerne un dispositif d'airbag, comprenant un airbag (11) qui se développe et qui arrête la tête d'un occupant assis sur un siège; un dispositif de gonflage (13) pour générer un gaz à introduire dans l'airbag (11); et un tuyau de connexion (20) comprenant un sac à l'intérieur d'une partie horizontale (20a) qui est insérée dans l'airbag (11) et qui s'étend essentiellement horizontalement dans l'airbag (11), et des trous de fourniture de fluide (H) formés dans la partie horizontale, et introduisant le gaz généré par le dispositif de gonflage (13) dans l'airbag (11) à travers les trous de fourniture de fluide (H).
PCT/JP2007/059618 2006-08-07 2007-05-09 Dispositif d'airbag WO2008018216A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-214940 2006-08-07
JP2006214940A JP2008037279A (ja) 2006-08-07 2006-08-07 エアバッグ装置

Publications (1)

Publication Number Publication Date
WO2008018216A1 true WO2008018216A1 (fr) 2008-02-14

Family

ID=39032754

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/059618 WO2008018216A1 (fr) 2006-08-07 2007-05-09 Dispositif d'airbag

Country Status (2)

Country Link
JP (1) JP2008037279A (fr)
WO (1) WO2008018216A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7380624B2 (ja) * 2021-03-26 2023-11-15 豊田合成株式会社 乗員保護装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0516760A (ja) * 1991-07-18 1993-01-26 Nippon Soken Inc エアバツグ装置
JPH092190A (ja) * 1995-06-22 1997-01-07 Toyota Motor Corp 車両用エアバッグ装置
JP2002037011A (ja) * 2000-06-13 2002-02-06 Takata Corp 車両乗員のための保護装置および乗員の保護方法
JP2003034214A (ja) * 2001-07-03 2003-02-04 Delphi Automotive Systems Sunwoo Corp 車両用サイドエアバッグ及びそのフォールディング方法
JP2004276906A (ja) * 2002-09-23 2004-10-07 Takata Corp 乗員保護装置
JP2004284423A (ja) * 2003-03-19 2004-10-14 Toyoda Gosei Co Ltd 車両の後突用エアバッグ装置
JP2005206016A (ja) * 2004-01-22 2005-08-04 Nissan Motor Co Ltd 車両用ヘッドレスト装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0516760A (ja) * 1991-07-18 1993-01-26 Nippon Soken Inc エアバツグ装置
JPH092190A (ja) * 1995-06-22 1997-01-07 Toyota Motor Corp 車両用エアバッグ装置
JP2002037011A (ja) * 2000-06-13 2002-02-06 Takata Corp 車両乗員のための保護装置および乗員の保護方法
JP2003034214A (ja) * 2001-07-03 2003-02-04 Delphi Automotive Systems Sunwoo Corp 車両用サイドエアバッグ及びそのフォールディング方法
JP2004276906A (ja) * 2002-09-23 2004-10-07 Takata Corp 乗員保護装置
JP2004284423A (ja) * 2003-03-19 2004-10-14 Toyoda Gosei Co Ltd 車両の後突用エアバッグ装置
JP2005206016A (ja) * 2004-01-22 2005-08-04 Nissan Motor Co Ltd 車両用ヘッドレスト装置

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