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WO2018037932A1 - Coussin de sécurité gonflable de siège de conducteur, dispositif de coussin de sécurité gonflable de siège de conducteur et volant de direction - Google Patents

Coussin de sécurité gonflable de siège de conducteur, dispositif de coussin de sécurité gonflable de siège de conducteur et volant de direction Download PDF

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Publication number
WO2018037932A1
WO2018037932A1 PCT/JP2017/029067 JP2017029067W WO2018037932A1 WO 2018037932 A1 WO2018037932 A1 WO 2018037932A1 JP 2017029067 W JP2017029067 W JP 2017029067W WO 2018037932 A1 WO2018037932 A1 WO 2018037932A1
Authority
WO
WIPO (PCT)
Prior art keywords
airbag
tether
driver
front panel
steering wheel
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2017/029067
Other languages
English (en)
Japanese (ja)
Inventor
公裕 越川
浩通 吉川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takata Corp
Original Assignee
Takata Corp
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 Corp filed Critical Takata Corp
Publication of WO2018037932A1 publication Critical patent/WO2018037932A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers

Definitions

  • the present invention relates to an airbag and an airbag device for restraining an occupant in a car collision, and more particularly to an airbag and an airbag device for a driver's seat.
  • the present invention also relates to a steering wheel provided with the airbag device.
  • the airbag device for the driver's seat provided on the steering wheel operates the inflator (gas generator) to eject gas in the event of an emergency such as a vehicle collision, supplies gas to the airbag, and operates the airbag with the steering wheel. It is configured to be deployed with a seat occupant.
  • Patent Document 1 air formed in a bag shape by sewing an occupant side base fabric facing the driver side in an inflated and unfolded state and an anti occupant side base fabric facing the occupant side, that is, the steering wheel side. A bag is described.
  • the airbag described in Patent Document 1 is provided with a lateral tether that is deployed so as to be longitudinal in the vehicle width direction (along the vehicle width direction) at the upper part and rear part in the airbag in an inflated and deployed state.
  • a lateral tether that is deployed so as to be longitudinal in the vehicle width direction (along the vehicle width direction) at the upper part and rear part in the airbag in an inflated and deployed state.
  • the head of the occupant that has contacted the tether deployment region in the airbag is restrained by the airbag so as to be sandwiched by the tether from both sides in the vehicle width direction.
  • the difference in restraining force acting on the right and left of the occupant is kept small, and the rotation of the occupant head is suppressed.
  • the present invention provides a driver-seat air having a simple configuration in which the occupant-facing surface can be formed in a shape close to a flat surface in the inflated state, and the occupant can be restrained while suppressing the rotation of the occupant's head in the event of an oblique collision.
  • An object is to provide a bag, an airbag device for a driver's seat, and a steering wheel.
  • the airbag for a driver's seat includes a front panel on the occupant side, a rear panel on the steering wheel side, a front portion having a central portion and a plurality of radial direction portions extending radially from the central portion, A tether guide having a slit formed therein, the central portion of the front tether being coupled to the front panel, and the plurality of radial direction portions are respectively inserted through the plurality of slits and the tip portions thereof are connected to the rear panel.
  • the tether guide is coupled to the front panel.
  • the coupling portion between the tether guide and the front panel is located closer to the outer periphery of the airbag than the coupling portion between the front tether and the front panel.
  • the plurality of slits are located on the outer peripheral side of the airbag with respect to the connecting portion between the front tether and the front panel, and on the inner peripheral side of the airbag with respect to the connecting portion between the tether guide and the front panel. Is located.
  • the distal end portion of the radial direction portion in the inflated and deployed state, is positioned closer to the outer peripheral side of the airbag than the slit.
  • the driver seat airbag device of the present invention includes the driver seat airbag according to the present invention and an inflator for inflating the driver seat airbag.
  • the steering wheel of the present invention is provided with the driver airbag device according to the present invention.
  • the occupant-facing surface can be formed in a shape close to a flat surface in the inflated state, and the occupant can be restrained while suppressing the rotation of the occupant's head in the event of an oblique collision.
  • FIG. 1A is a front view of a steering wheel provided with an airbag device including a driver's seat airbag according to the embodiment
  • FIG. 1B is a front view of the steering wheel when the airbag is inflated
  • FIG. 2 is a side view of the inflated driver's seat airbag.
  • 3a to 3d are exploded views of the driver's seat airbag.
  • FIG. 4 is a view showing a coupling example of the front tether and the front panel.
  • FIG. 5 is a view showing a coupling example of the tether guide and the front panel.
  • FIG. 6 is a view showing a coupling example of the front tether and the rear panel.
  • FIG. 7 is a sectional view taken along line VII-VII in FIG. 1b.
  • FIG. 1B is a front view of the steering wheel when the airbag is inflated.
  • FIG. 2 is a side view of the inflated driver's seat airbag.
  • 3a to 3d are exploded views of
  • FIG. 8A is a plan view before the head comes into contact with the airbag
  • FIG. 8B is a plan view in a state where the head is restrained by the airbag
  • FIG. 9A is a plan view before the head comes into contact with the airbag
  • FIG. 9B is a plan view in a state where the head is restrained by the airbag.
  • FIG. 10 is a plan view of a front tether according to another embodiment.
  • FIGS. 1a to 9b Embodiments of the present invention will be described with reference to FIGS. 1a to 9b.
  • the front-rear direction and the left-right direction coincide with the up-down direction and the left-right direction of the steering wheel when the steering wheel is in a straight traveling posture.
  • An airbag 10 for a driver's seat (hereinafter simply abbreviated as an airbag) according to the present embodiment is attached to a retainer (not shown) as an airbag attachment member in a folded state, and built in an inflator 2. Is inflated.
  • a module cover (not shown) is mounted so as to cover the folded body of the airbag 10, thereby configuring a driver's seat airbag device.
  • the steering wheel 1 includes a central portion 1a connected to a steering shaft (not shown), an annular portion 1b that circulates around the central portion 1a, and a spoke portion 1c that connects the central portion 1a and the annular portion 1b. have.
  • a total of three spoke portions 1c extend from the central portion 1a to the left and right and downward, and the front end side in the extending direction of each spoke portion 1c is the inner periphery of the left and right and lower sides of the annular portion 1b. It is connected to each.
  • the portion where the spoke portion 1c does not exist is an open portion 1d that communicates the occupant side and the non-occupant side of the steering wheel 1.
  • the steering wheel 1 is attached to the rear end of the steering column 3 protruding rearward (driver's seat side) from the instrument panel 4.
  • a driver's seat airbag device is disposed in the central portion 1 a of the steering wheel 1.
  • the driver's seat airbag 10 is formed as a bag by combining a front panel 11 that constitutes a front surface on the passenger side when inflated and a rear panel 12 that constitutes a rear surface on the steering wheel 1 side.
  • a tether 20 and a tether guide 30 are provided.
  • the base fabric constituting the front panel 11, the rear panel 12, the front tether 20, and the tether guide 30 may be made of the same material or different ones.
  • the rear panel 12 and the front panel 11 are circular (substantially circular).
  • the rear panel 12 is made of a circular woven cloth that is larger than the annular portion 1 b of the steering wheel 1.
  • the diameter of the rear panel 12 is about 400 to 700 mm.
  • the diameter of the front panel 11 is the same as that of the rear panel 12.
  • the rear panel 12 is provided with an inflator opening 13 into which the inflator 2 is inserted.
  • a bolt insertion hole 14 through which a bolt for fixing the rear panel 12 together with the inflator 2 to the retainer is inserted is provided around the inflator opening 13.
  • vent holes 15 that communicate the inside and the outside of the airbag 10 are provided.
  • the shape, number, and position of the vent hole 15 can be changed as appropriate.
  • the front tether 20 has a substantially cross shape having a central portion 21 and four radial direction portions 22a, 22b, 22c, and 22d extending from the central portion 21 in the vertical and horizontal radial directions. ing.
  • the lengths of the radial direction portions 22a, 22b, 22c, and 22d are substantially the same, and the length L1 from the center of the central portion 21 to the distal ends of the radial direction portions 22a, 22b, 22c, and 22d is about 200 to 400 mm. It has become.
  • the width W of the radial direction portions 22a, 22b, 22c, and 22d is about 50 to 150 mm.
  • the tether guide 30 is circular (substantially circular), and four slits 32a, 32b, 32c, 32d through which the radial direction portions 22a, 22b, 22c, 22d are inserted are formed.
  • the length L2 of each slit 32a, 32b, 32c, 32d is preferably about the same as or slightly larger than the width W of the radial direction portions 22a, 22b, 22c, 22d, and smaller than W + 50 mm.
  • the radius L3 of the tether guide 30 is about 150 to 300 mm.
  • the distance L4 from the center of the tether guide 30 to the slits 32a, 32b, 32c, 32d is larger than half of the radius L3.
  • the center portion of the front panel 11 and the center portion 21 of the front tether 20 are joined by a circular stitching portion 41 made of a suture thread.
  • the diameter of the circular stitching portion 41 is about 80 to 150 mm, and is located closer to the center in the radial direction than the slits 32a, 32b, 32c, and 32d.
  • the radial direction portions 22a, 22b, 22c, and 22d of the front tether 20 are inserted into the slits 32a, 32b, 32c, and 32d of the tether guide 30, respectively. Then, the front panel 11 and the peripheral edge portion of the tether guide 30 are joined by a circular stitching portion 42. A central portion 21 of the front tether 20 is located between the front panel 11 and the tether guide 30.
  • the circular stitching portion 42 is located radially outside the slits 32a, 32b, 32c, 32d of the tether guide 30. By inserting the slits 32a, 32b, 32c, and 32d, the positions of the radial direction portions 22a, 22b, 22c, and 22d in the airbag 10 can be regulated.
  • the radial direction portions 22a, 22b, 22c, and 22d of the front tether 20 and the rear panel 12 are joined by suture portions 43a (see FIG. 7), 43b, 43c, and 43d using sutures.
  • the length L5 from the center of the rear panel 12 (the center of the inflator opening 13) to the point where the distal end portions of the radial direction portions 22a, 22b, 22c, and 22d are combined is from the center of the tether guide 30 to the slits 32a, 32b, It is longer than the distance L4 to 32c and 32d and is about 150 to 350 mm.
  • the airbag 10 is produced by joining the periphery of the front panel 11 and the periphery of the rear panel 12 with the stitching portion 44 (see FIG. 7).
  • the inflator 2 When an automobile equipped with this airbag device for a driver's seat collides, the inflator 2 is activated and the airbag 10 is inflated and deployed behind the steering wheel 1 (in front of the passenger). Since the front end portions of the radial direction portions 22a, 22b, 22c, and 22d of the front tether 20 are coupled to the rear panel 12, the front panel 11 that serves as an occupant restraint surface is drawn into the steering wheel 1 side in a state where inflation is completed. It becomes a substantially planar shape close to.
  • the front end portion of the radial direction portions 22a, 22b, 22c, and 22d pulls the rear panel 12 toward the passenger, so that the front panel 11 can be easily flattened.
  • the distal end portions of the radial direction portions 22a, 22b, 22c, and 22d coupled to the rear panel 12 are positioned on the outer peripheral side of the airbag 10 with respect to the slits 32a, 32b, 32c, and 32d. is doing.
  • a stitched portion 42 with the tether guide 30 is provided on the outer peripheral side of the stitched portion 41 of the front panel 11 and the amount of expansion of the front panel 11 toward the occupant side is suppressed, so that the wide area of the front panel 11 is flat. It becomes a substantially planar shape close to.
  • the occupant head H
  • the front panel 11 which is the occupant restraint surface, as shown in FIGS. 8a and 8b.
  • the shape of the airbag 10 is held by the front tether 20 and the tether panel 30.
  • the front tether 20 and the tether panel 30 in the airbag 10 are loosened and the occupant is restrained.
  • FIGS. 9a and 9b when the vehicle obliquely strikes (a collision mode in which an impact is applied to the vehicle obliquely from the front, including an offset collision), the occupant is left-side edge of the front panel 11 as an occupant restraint surface as shown in FIGS. Part (or right edge). At this time, the airbag 10 is inclined while restraining the occupant because the diameter of the front panel 11 that is the occupant restraint surface is larger than the diameter of the steering wheel 1 side. Thereby, the reaction force with respect to the moving direction of the head H is suppressed, and the head H is suppressed from rotating around the axis along the vertical direction.
  • the radial direction portion of the front tether 20 is not limited to four, and a front tether 20A having three radial direction portions as shown in FIG. 10 may be used, or five or more radial direction portions may be used.
  • the slits of the tether guide 30 are formed according to the number and position of the radial direction portions of the front tethers 20 and 20A.

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

Abstract

La présente invention concerne un coussin de sécurité gonflable de siège de conducteur caractérisé en ce que la surface face à l'occupant de celui-ci peut prendre une forme qui est proche d'une forme plate lorsque le coussin de sécurité gonflable est complètement gonflé, et qu'il est possible de retenir l'occupant tout en supprimant la rotation de la tête de l'occupant lors d'une collision oblique. Ce coussin de sécurité gonflable 10 comprend : un panneau avant côté occupant 11 ; un panneau arrière 12 sur le côté du volant de direction 1 ; une attache avant 20 qui comporte une partie centrale 21 et une pluralité de parties radiales 22a à 22d s'étendant radialement depuis la partie centrale 21 ; et un guide d'attache 30 qui est pourvu d'une pluralité de fentes 32a à 32d. La partie centrale 21 de l'attache avant 20 est reliée au panneau avant 11. La pluralité de parties radiales 22a à 22d sont insérées dans la pluralité de fentes 32a à 32d, respectivement, et leurs extrémités avant sont reliées au panneau arrière 12. Le guide d'attache 30 est relié au panneau avant 11.
PCT/JP2017/029067 2016-08-26 2017-08-10 Coussin de sécurité gonflable de siège de conducteur, dispositif de coussin de sécurité gonflable de siège de conducteur et volant de direction Ceased WO2018037932A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016165886A JP2018030534A (ja) 2016-08-26 2016-08-26 運転席用エアバッグ、運転席用エアバッグ装置及びステアリングホイール
JP2016-165886 2016-08-26

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Publication Number Publication Date
WO2018037932A1 true WO2018037932A1 (fr) 2018-03-01

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PCT/JP2017/029067 Ceased WO2018037932A1 (fr) 2016-08-26 2017-08-10 Coussin de sécurité gonflable de siège de conducteur, dispositif de coussin de sécurité gonflable de siège de conducteur et volant de direction

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WO (1) WO2018037932A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6878362B2 (ja) * 2018-08-02 2021-05-26 オートリブ ディベロップメント エービー エアバッグ装置及びエアバッグ装置の製造方法
JP7093014B2 (ja) * 2019-03-28 2022-06-29 豊田合成株式会社 ステアリングホイール用エアバッグ

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49104334A (fr) * 1973-02-13 1974-10-02
JPS6429053U (fr) * 1987-08-17 1989-02-21
JPH0243747U (fr) * 1988-09-21 1990-03-26
JPH03126742U (fr) * 1990-04-03 1991-12-20
JPH0811657A (ja) * 1994-06-29 1996-01-16 Toyoda Gosei Co Ltd エアバッグ装置のエアバッグ
JP2001301555A (ja) * 2000-04-18 2001-10-31 Takata Corp エアバッグ装置
JP2002019568A (ja) * 2000-07-07 2002-01-23 Honda Motor Co Ltd エアバッグ装置
JP2002283941A (ja) * 2001-03-26 2002-10-03 Toyoda Gosei Co Ltd エアバッグ
JP2003260996A (ja) * 2002-03-07 2003-09-16 Takata Corp エアバッグ装置
JP2007055577A (ja) * 2005-07-29 2007-03-08 Takata Corp エアバッグ及びエアバッグ装置
JP2007216943A (ja) * 2005-08-24 2007-08-30 Takata Corp エアバッグ及びエアバッグ装置
JP2009061970A (ja) * 2007-09-07 2009-03-26 Takata Corp 運転席用エアバッグ、運転席用エアバッグ装置及びステアリングデバイス

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49104334A (fr) * 1973-02-13 1974-10-02
JPS6429053U (fr) * 1987-08-17 1989-02-21
JPH0243747U (fr) * 1988-09-21 1990-03-26
JPH03126742U (fr) * 1990-04-03 1991-12-20
JPH0811657A (ja) * 1994-06-29 1996-01-16 Toyoda Gosei Co Ltd エアバッグ装置のエアバッグ
JP2001301555A (ja) * 2000-04-18 2001-10-31 Takata Corp エアバッグ装置
JP2002019568A (ja) * 2000-07-07 2002-01-23 Honda Motor Co Ltd エアバッグ装置
JP2002283941A (ja) * 2001-03-26 2002-10-03 Toyoda Gosei Co Ltd エアバッグ
JP2003260996A (ja) * 2002-03-07 2003-09-16 Takata Corp エアバッグ装置
JP2007055577A (ja) * 2005-07-29 2007-03-08 Takata Corp エアバッグ及びエアバッグ装置
JP2007216943A (ja) * 2005-08-24 2007-08-30 Takata Corp エアバッグ及びエアバッグ装置
JP2009061970A (ja) * 2007-09-07 2009-03-26 Takata Corp 運転席用エアバッグ、運転席用エアバッグ装置及びステアリングデバイス

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