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WO2014042040A1 - Airbag, dispositif d'airbag et structure de montage d'airbag - Google Patents

Airbag, dispositif d'airbag et structure de montage d'airbag Download PDF

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Publication number
WO2014042040A1
WO2014042040A1 PCT/JP2013/073691 JP2013073691W WO2014042040A1 WO 2014042040 A1 WO2014042040 A1 WO 2014042040A1 JP 2013073691 W JP2013073691 W JP 2013073691W WO 2014042040 A1 WO2014042040 A1 WO 2014042040A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
chamber
airbag
front pillar
inflating
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/JP2013/073691
Other languages
English (en)
Japanese (ja)
Inventor
和博 原塚
健児 中村
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 WO2014042040A1 publication Critical patent/WO2014042040A1/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
    • B60R21/213—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle roof frames or pillars
    • 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
    • B60R21/232—Curtain-type airbags deploying mainly in a vertical direction from their top edge
    • 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
    • B60R21/237—Inflatable members characterised by the way they are folded

Definitions

  • the present invention relates to an airbag that inflates so as to cover a side window portion of a vehicle, and an airbag device and an airbag mounting structure including the airbag.
  • Patent Document 1 is known as a prior art document relating to an airbag that inflates so as to cover a side window portion of a vehicle.
  • This airbag is provided with a sub-inflation part arranged near the lower part of the front pillar garnish when deployed.
  • An object of the present invention is to provide an air bag, an air bag device, and an air bag mounting structure that make it easy to sufficiently cover the front pillar portion.
  • the present invention provides: A first chamber that expands to cover a side window portion of the vehicle; A first vehicle mounting portion provided above the first chamber; A second vehicle mounting portion provided laterally with respect to a side end of the first chamber; A third vehicle attachment portion provided laterally with respect to the side end portion and above the second vehicle attachment portion; A second line is provided on the opposite side of the first chamber with respect to an extension line passing through the second vehicle attachment portion and the third vehicle attachment portion, and expands to cover the front pillar portion of the vehicle.
  • An air bag including the chamber is provided.
  • this invention provides an airbag apparatus provided with this airbag and an airbag attachment structure.
  • FIG. 2 is a cross-sectional view of the section AA in FIG. 1 when the airbag is stored.
  • FIG. 2 is a cross-sectional view of the section AA in FIG. 1 when the airbag is inflated.
  • the X-axis direction corresponds to the longitudinal direction of the vehicle
  • the Y-axis direction corresponds to the vehicle width direction
  • the Z-axis direction corresponds to the vertical direction of the vehicle.
  • X-axis direction”, “Y-axis direction”, and “Z-axis direction” represent directions parallel to the respective axes, and allow for a direction shift that does not impair the effects of the present invention.
  • FIG. 1 is a schematic side view of an airbag mounting structure 1 and a curtain airbag device 2 according to an embodiment of the present invention as viewed from the outside of a vehicle and the left side of the vehicle.
  • FIG. 1 transparently shows a part of the vehicle body so that the structure of the airbag mounting structure 1 and the curtain airbag device 2 can be easily explained.
  • the airbag attachment structure 1 and the curtain airbag device 2 are provided on the side surfaces of the vehicle body on both sides of the vehicle.
  • FIG. 1 shows the vehicle body side surface on one side of the vehicle, the vehicle body side surface on the opposite side has the same configuration, and therefore illustration thereof is omitted.
  • the airbag mounting structure 1 is a part of a vehicle structure including a front pillar portion 14, a side window portion 9, a roof side portion 5, and a curtain airbag device 2.
  • the front pillar portion 14 is a columnar portion extending along the left and right edge portions of the windshield (front windshield) 8, and is also referred to as an A pillar portion, for example.
  • the front pillar portion 14 includes, for example, a front pillar main body 15 and a front pillar garnish 16.
  • the front pillar body 15 is a metal portion that constitutes a part of the vehicle body frame.
  • the front pillar garnish 16 is an interior member that covers the front pillar body 15 from the passenger compartment side, and is a resin member that is also referred to as a front pillar trim, for example.
  • the front pillar portion 14 covers the front end portion 82 of the curtain airbag 3 attached to the front pillar main body 15 with the front pillar garnish 16.
  • the front end portion 82 is a portion of the folding body 30 of the curtain airbag 3 on the vehicle front side, and details thereof will be described later.
  • the side window portion 9 is, for example, an upper portion of the side surface portion of the vehicle body, and includes a front side glass 10, a side pillar portion 12, a rear side glass 11, and a rear pillar portion 13.
  • the front side glass 10 is a window glass provided on the side of the front seat (driver's seat or front passenger seat) in the passenger compartment, and is disposed between the front pillar portion 14 and the side pillar portion 12.
  • the front side glass 10 may be an openable / closable window glass provided at a door on the side of the front seat, or may be a fitting window glass provided at a body part on the side of the front seat.
  • the side pillar portion 12 is a columnar portion disposed between the front side glass 10 and the rear side glass 11, and is also referred to as a B pillar portion, for example.
  • the side pillar portion 12 also has, for example, a side pillar body and a side pillar garnish, similarly to the front pillar portion 14.
  • the rear side glass 11 is a window glass provided on the side of the rear seat of the vehicle interior, and is disposed between the side pillar portion 12 and the rear pillar portion 13.
  • the rear side glass 11 may be an openable / closable window glass provided at a door on the side of the rear seat, or may be a window glass for fitting-off provided at a body part on the side of the rear seat.
  • the rear pillar portion 13 is a columnar portion extending along the vehicle rear side portion of the rear side glass 11, and is also referred to as, for example, a C pillar portion. Similarly to the front pillar portion 14, the rear pillar portion 13 also has, for example, a rear pillar main body and a rear pillar garnish.
  • the roof side portion 5 is connected to the upper end portions of the front pillar portion 14, the side pillar portion 12, and the rear pillar portion 13 and extends in the vehicle front-rear direction.
  • the roof side portion 5 includes, for example, a roof side rail 6 and a roof side garnish 7.
  • the roof side rail 6 is a metal member that constitutes a part of the vehicle body frame.
  • the roof side garnish 7 is an interior member that covers the roof side rail 6 from the passenger compartment side, and is, for example, a resin member that is also called roof lining.
  • the roof side portion 5 covers the main body portion 81 and the inflator 4 of the curtain airbag 3 attached to the roof side rail 6 with a roof side garnish 7.
  • the main body portion 81 is an intermediate portion and a rear end portion (a portion on the vehicle rear side with respect to the front end portion 82 of the folding body 30) of the folding body 30 of the curtain airbag 3, which will be described in detail later.
  • the curtain airbag device 2 lowers the folding body 30 of the curtain airbag 3 accommodated from the front pillar portion 14 to the roof side portion 5 along the side surface of the vehicle compartment, for example, at the time of vehicle collision or collision prediction. Is an occupant protection device that inflates and deploys.
  • the curtain airbag device 2 includes an inflator 4 and a curtain airbag 3 that is an embodiment of the present invention.
  • the inflator 4 is a gas generator that generates gas for inflating and deploying the folding body 30 of the curtain airbag 3 based on a control signal from a control circuit (not shown) at the time of vehicle collision or collision prediction.
  • the curtain airbag 3 is a fabric panel formed in a bag shape so as to be inflated and deployed between the side window portion 9 and the front pillar portion 14 and the occupant by the gas supplied from the inflator 4.
  • the curtain airbag 3 is accommodated in the roof side portion 5 and the front pillar portion 14 in a folded state.
  • the roof side portion 5 accommodates the main body portion 81 of the folding body 30 of the curtain airbag 3, and the front pillar portion 14 accommodates the front end portion 82 of the folding body 30.
  • the roof side part 5 covers the main body part 81 attached to the roof side rail 6 with a plurality of tabs 23, 24, 25, 26 provided on the curtain airbag 3 with the roof side garnish 7.
  • the tabs 23, 24, 25, and 26 are vehicle attachment portions that are attached to the roof side rail 6 by connecting members such as bolts.
  • the front pillar portion 14 covers the front end portion 82 attached to the front pillar main body 15 with a plurality of tabs 21 and 22 provided on the curtain airbag 3 with the front pillar garnish 16.
  • the tab 21 is a vehicle attachment portion that is attached to a lower portion of the front pillar main body 15 or an intermediate portion above the lower portion by a connecting member such as a bolt.
  • the tab 22 is a vehicle attachment portion that is attached to the front pillar body 15 above the attachment position of the tab 21 to the front pillar body 15.
  • the tabs 21 and 22 are arranged on the vehicle front side with respect to the installation positions of the other tabs 23 to 26.
  • the tab 21 is located on the foremost side of the vehicle among all the tabs.
  • the main body 81 of the folding body 30 protrudes while expanding from the gap between the roof side rail 6 and the roof side garnish 7 by the supply of gas from the inflator 4 and expands so as to cover the side window portion 9.
  • the front end portion 82 of the folding body 30 also projects while expanding from the gap between the front pillar main body 15 and the front pillar garnish 16 by the supply of gas from the inflator 4, and expands so as to cover the front pillar garnish 16. .
  • FIG. 2 is a schematic side view of the interior panel surface of the curtain airbag 3A as opposed to the curtain airbag 3A, which is a first specific example of the curtain airbag 3 of FIG.
  • the curtain airbag 3A includes two panels 33a and 33b having substantially the same shape and the same material, the longitudinal direction of which is the X-axis direction, and the outer peripheral portions of the panels 33a and 33b overlapped with each other are linearly coupled portions 34. It has the bag structure formed by joining by. The outer peripheral portions of the panels 33a and 33b are joined together by stitching, for example.
  • the panel 33a is a base fabric disposed on the vehicle interior side
  • the panel 33b is a base fabric disposed on the vehicle exterior side.
  • the panel 33 d made of the same material as the panel 33 a is superimposed on the roof side of the panel 33 a behind the vehicle.
  • the curtain airbag 3A includes a gas introduction part 32 and an airbag main body part 31 formed by joining the outer peripheral parts of the panels 33a and 33b with the linear coupling part 34.
  • the gas introduction part 32 is a cylindrical part provided so as to extend upward and obliquely rearward with respect to the upper edge part 38 of the airbag body part 31.
  • the gas introduction part 32 is attached to the inflator 4 in a state where the gas ejection part of the inflator 4 (see FIG. 1) is inserted.
  • the main chamber 36 and the sub chamber 37 formed in the airbag main body 31 and the intermediate chamber 42 are expanded by the gas flowing in from the inflator 4 through the gas introduction portion 32.
  • the main chamber 36, the sub chamber 37, and the intermediate chamber 42 are expansion portions formed by joining the panels 33 a and 33 b with the linear coupling portion 34 and the annular coupling portion 35. It is formed so that gas is distributed and connected.
  • the linear coupling portion 34 and the annular coupling portion 35 join the panels 33a and 33b so that the gas flowing in from the gas introduction portion 32 does not leak to the outside and the panels 33a and 33b are not separated by the internal pressure of the gas.
  • Examples of the joining method include stitching, adhesion, and welding.
  • a part of the linear coupling portion 34 is provided so as to go around the curtain airbag 3A.
  • a part of the annular coupling part 35 is provided so as to surround a hole that penetrates the panels 33a and 33b. Further, a part of the linear coupling part 34 and a part of the annular coupling part 35 are provided so as to divide the main chamber 36 into a plurality of section expansion parts.
  • the main chamber 36 is an inflatable part that can be inflated so as to cover part or all of the side window part 9 (see FIG. 1), and as shown in FIG. 2, the main body inflating part 36a and the side end inflating part 36b. It is what has.
  • the main body expansion portion 36 a and the side end expansion portion 36 b are section expansion portions formed by being separated by the linear coupling portion 34 and / or the annular coupling portion 35.
  • the main body expansion portion 36a is a base portion of the main chamber 36 and is a portion extending from an intermediate portion to a rear end portion of the main chamber 36.
  • the main body expansion part 36a is further divided into a plurality of small expansion parts.
  • the main body expansion portion 36a expands so as to cover at least one of the vehicle rear side portion of the front side glass 10, the side pillar portion 12, the rear side glass 11, and the rear pillar portion 13 shown in FIG.
  • the side end inflating portion 36b is a side end portion on the vehicle front side of the main chamber 36, and is formed on the vehicle front side with respect to the main body inflating portion 36a.
  • the front end of the side end inflating part 36b on the vehicle front side is formed by a foremost line connecting part 34a extending in the Z direction.
  • the linear coupling portion 34 a may be extended from the notch portion 41 of the upper edge portion 38 to a site that is half or more of the full width (full height) of the main chamber 36 in the Z direction. .
  • the side end inflating part 36b communicates with the main body inflating part 36a so that the gas flowing in from the gas introducing part 32 can flow.
  • the side end inflating portion 36b expands so as to cover a portion of the front side glass 10 shown in FIG. Therefore, the side end inflating part 36b is provided below the tab 23 on the most front side of the vehicle among the tabs 23, 24, 25, 26 used for attaching the roof side part 5 to the roof side rail 6. Good.
  • the intermediate chamber 42 is provided between the main chamber 36 and the sub chamber 37, and the gas that has passed through the side end expansion portion 36 b of the main chamber 36 flows into the sub chamber 37 via the intermediate chamber 42.
  • tabs 23, 24, 25, and 26 are provided above the main body inflating portion 36 a so as to protrude upward with respect to the upper edge portion 38 of the airbag main body portion 31.
  • the tabs 23, 24, 25, and 26 are vehicle attachment portions used for attachment of the roof side portion 5 to the roof side rail 6 (see FIG. 1), and are provided along the upper edge portion 38.
  • a mounting hole 20 is formed as a portion through which a mounting bolt (not shown) for fixing to the roof side rail 6 can be inserted. .
  • a tab 21A is formed on the side of the vehicle front side with respect to the side end inflating portion 36b so as to protrude from the outer edge portion of the airbag main body 31 on the vehicle front side.
  • the tab 21A is a vehicle attachment portion used for attaching the front pillar portion 14 to the front pillar body 15 (see FIG. 1) (an example of the tab 21 in FIG. 1).
  • a mounting hole 20 is formed in the tab 21 ⁇ / b> A as a portion into which a mounting bolt (not shown) for fixing the curtain airbag 3 ⁇ / b> A to the front pillar body 15 can be inserted.
  • a tab 22A is provided on the side of the vehicle front side with respect to the side end inflating portion 36b and obliquely above the vehicle rear side of the tab 21A.
  • the tab 22A is a vehicle attachment portion used for attachment to the front pillar body 15 (see FIG. 1), and is for attaching the curtain airbag 3A to the front pillar body 15 at an attachment position above the tab 21A. Yes (an example of the tab 22 in FIG. 1).
  • a mounting hole 20 is formed in the tab 22 ⁇ / b> A as a portion through which a mounting bolt (not shown) for fixing to the front pillar body 15 can be inserted.
  • the tab 22A is formed by a cutout 39 provided on the upper side of the intermediate chamber.
  • the cutout portion 39 is a hole portion formed in a U shape so as to pass through the panels 33a and 33b constituting the curtain airbag 3A, and is formed so that the bottom of the U shape is located on the lower side. It is.
  • the curtain airbag 3A has an auxiliary chamber 37 as an inflatable portion that can be inflated so as to cover part or all of the front pillar garnish 16 (see FIG. 1) of the front pillar portion 14. I have.
  • the sub chamber 37 is provided on the opposite side to the main chamber 36 with respect to the extension line L1 virtually drawn so as to pass through the attachment hole 20 of the tab 21A and the attachment hole 20 of the tab 22A.
  • the extension line L1 only needs to pass through part of the tab 21A or part of the tab 22A, and does not necessarily have to be a straight line that passes through the attachment hole 20.
  • the entire sub chamber 37 may not be provided on the opposite side of the extension line L1 from the main chamber 36, and a part of the sub chamber 37 may be provided on the opposite side of the extension line L1 from the main chamber 36. It may be provided.
  • the sub chamber 37 is connected to the side end expansion portion 36 b of the main chamber 36 so as to communicate with the side end expansion portion 36 b via the intermediate chamber 42, and the gas from the gas introduction portion 32 flows in via the side end expansion portion 36 b and the intermediate chamber 42. To do.
  • the sub chamber 37 is inflated and deployed so as to cover a part or all of the front pillar garnish 16 (see FIG. 1) by the inflow of gas. Therefore, according to the curtain airbag 3A provided with such a sub chamber 37, it is possible to easily cover the front pillar garnish 16 sufficiently.
  • the sub chamber 37 preferably has an upper expansion portion 37 a above the extension line L ⁇ b> 2 virtually drawn so as to pass through the upper edge portion 38 of the main chamber 36. .
  • the upper expansion portion 37a is curved so as to protrude obliquely rearward on the upper side of the vehicle. Note that the entire upper inflating portion 37a may not be provided above the extension line L2, and a part of the upper inflating portion 37a may be provided above the extension line L2.
  • the sub chamber 37 preferably has a side expansion portion 37 b on the side opposite to the main chamber 36 with respect to the tab 21 ⁇ / b> A.
  • the side expansion portion 37b is curved so as to protrude toward the front side of the vehicle. Note that the entire side expansion portion 37b may not be provided on the side opposite to the main chamber 36 with respect to the tab 21A, and a portion of the side expansion portion 37b is opposite to the main chamber 36 with respect to the tab 21A. It may be provided on the side.
  • ⁇ Folding method of curtain airbag 3A> 3 4, 5, and 6 are diagrams for explaining an example of a folding method of the curtain airbag 3A of FIG.
  • the two tabs 21 ⁇ / b> A and 22 ⁇ / b> A on the front side of the vehicle that are fastened to the front pillar body 15 are folded up from the base to the outside of the vehicle.
  • the side expansion portion 37b located on the vehicle front side with respect to the tab 21A is folded back toward the vehicle interior so that the surface of the panel 33a is valley-folded.
  • the side expansion portion 37b may be folded back at a folding line parallel to the Z-axis direction on the vehicle front side of the tab 21A.
  • the main chamber 36 is preferably folded up to the base of the tabs 23, 24, 25, 26 by, for example, bellows folding. By being folded in this manner, a bellows portion 81A having the X-axis direction as the longitudinal direction is formed.
  • the front bellows portion 81Aa which is the front side portion of the bellows portion 81A, extends upward from the bellows portion 81A without being folded. It is wound by the part 37a.
  • the front bellows portion 81 ⁇ / b> Aa may be wound inside by the upper expansion portion 37 a with the surface of the panel 33 a inside the vehicle inside.
  • winding part 82A is formed by winding front bellows part 81Aa so that it may be wrapped with upper expansion part 37a.
  • the planar curtain airbag 3A is formed into a folded body 30A having a bellows portion 81A and a winding portion 82A as shown in FIG.
  • the folded body 30A may be held in shape by a binding tool (not shown) so that the folding body 30A does not collapse.
  • the folded body 30A, the bellows portion 81A, and the winding portion 82A are portions corresponding to the folded body 30, the main body portion 81, and the front end portion 82 of the curtain airbag 3 of FIG.
  • FIG. 7 is a schematic side view of the panel surface on the inner side of the curtain airbag 3B as opposed to the curtain airbag 3B as a second specific example of the curtain airbag 3 of FIG.
  • the description of the same part as the curtain airbag 3A in FIG. 2 is omitted or simplified.
  • the curtain airbag 3B has two panels 53a and 53b having substantially the same shape and the same material, the longitudinal direction of which is the X-axis direction, and the outer peripheral portions of the panels 53a and 53b overlapped with each other are linearly coupled portions 54. It has the bag structure formed by joining by.
  • the panel 53a is a base fabric disposed on the inside of the vehicle
  • the panel 53b is a base fabric disposed on the outside of the vehicle.
  • the panel 53d made of the same material as the panel 53a is superimposed on the roof side of the panel 53a on the rear side of the vehicle.
  • the curtain airbag 3B includes a gas introduction portion 52 and an airbag main body 51 formed by joining the outer peripheral portions of the panels 53a and 53b with a linear coupling portion 54.
  • the gas introduction part 52 is a cylindrical part provided to extend upward and obliquely rearward with respect to the upper edge part 58 of the airbag body part 51.
  • the main chamber 56 and the sub chamber 57 formed in the airbag main body 51 and the intermediate chamber 62 are expanded by the gas flowing from the inflator 4 (see FIG. 1) through the gas introducing portion 52.
  • the main chamber 56, the sub chamber 57, and the intermediate chamber 62 are expansion portions formed by joining the panels 53 a and 53 b with the linear coupling portion 54 and the annular coupling portion 55. It is formed so that gas is distributed and connected.
  • the main chamber 56 is an inflatable part that can be inflated so as to cover part or all of the side window part 9 (see FIG. 1), and as shown in FIG. 7, the main body inflating part 56a and the side end inflating part 56b. It is what has.
  • the main body expansion portion 56 a is a base portion of the main chamber 56 and is a portion extending from an intermediate portion to a rear end portion of the main chamber 56.
  • the main body expansion portion 56a expands so as to cover at least one of the vehicle rear side portion of the front side glass 10, the side pillar portion 12, the rear side glass 11, and the rear pillar portion 13 shown in FIG.
  • the side end inflating portion 56b is a side end portion on the vehicle front side of the main chamber 56, and is formed on the vehicle front side with respect to the main body inflating portion 56a.
  • the front end of the side end inflating portion 56b on the vehicle front side is formed by a front-end linear coupling portion 54a extending in the Z direction.
  • the linear coupling portion 54 a may extend from a notch portion 61 of the upper edge portion 58 to a site that is half or more of the full width (full height) of the main chamber 56 in the Z direction. .
  • the side end expansion part 56b communicates with the main body expansion part 56a so that the gas flowing in from the gas introduction part 52 can flow.
  • the side end inflating portion 56b expands so as to cover a portion of the front side glass 10 shown in FIG. Therefore, the side end inflating portion 56b is provided below the tab 23 on the most front side of the vehicle among the tabs 23, 24, 25, 26 used for attaching the roof side portion 5 to the roof side rail 6. Good.
  • the intermediate chamber 62 is provided between the main chamber 56 and the sub chamber 57, and the gas that has passed through the side end expansion portion 56b of the main chamber 56 flows into the sub chamber 57 via the intermediate chamber 62.
  • a tab 21B provided so as to protrude from an outer edge portion of the airbag main body 51 on the vehicle front side is formed on the side of the vehicle front side with respect to the side end inflating portion 56b.
  • the tab 21B is a vehicle attachment portion used for attaching the front pillar portion 14 to the front pillar body 15 (see FIG. 1) (an example of the tab 21 in FIG. 1).
  • a tab 22B is provided on the side of the vehicle front side with respect to the side end inflating portion 56b and obliquely above the vehicle rear side of the tab 21B.
  • the tab 22B is a vehicle attachment portion used for attachment to the front pillar body 15 (see FIG. 1), and is for attaching the curtain airbag 3B to the front pillar body 15 at an attachment position above the tab 21B. Yes (an example of the tab 22 in FIG. 1).
  • the tab 22 ⁇ / b> B is provided on the upper side of the intermediate chamber 62.
  • the tabs 21B and 22B are provided on the panel 53c superimposed on the outer surface of the panel 53b outside the vehicle.
  • the panel 53c is a base fabric having a front edge part 53c1, an upper edge part 53c2, a rear edge part 53c3, and a lower edge part 53c4, and is formed of the same material as the panel 53b.
  • the panel 53c is not joined to the vehicle inner panel 53a, but is joined to the outer surface of the panel 53b on the vehicle outer side by stitching or the like with a linear coupling portion 54 and an annular coupling portion 55.
  • the tab 21B is provided on the panel 53c so as to protrude forward of the vehicle with respect to the front edge 53c1.
  • the tab 22B is provided on the panel 53c so as to protrude upward of the vehicle with respect to the upper edge portion 53c2.
  • the curtain airbag 3B has an auxiliary chamber 57 as an inflatable portion that can be inflated so as to cover part or all of the front pillar garnish 16 (see FIG. 1) of the front pillar portion 14. I have.
  • the sub chamber 57 is provided on the opposite side to the main chamber 56 with respect to the extension line L3 virtually drawn so as to pass through the attachment hole 20 of the tab 21B and the attachment hole 20 of the tab 22B.
  • the extension line L3 only needs to pass through a part of the tab 21B or a part of the tab 22B, and does not necessarily have to be a straight line that passes through the attachment hole 20.
  • the entire sub chamber 57 may not be provided on the side opposite to the main chamber 56 with respect to the extension line L3, and a part of the sub chamber 57 is on the side opposite to the main chamber 56 with respect to the extension line L3. It may be provided.
  • the sub chamber 57 is connected to the side end expansion part 56 b of the main chamber 56 so as to communicate with the side end expansion part 56 b via the intermediate chamber 62, and the gas from the gas introduction part 52 flows in via the side end expansion part 56 b and the intermediate chamber 62. To do.
  • the sub chamber 57 is inflated and expanded so as to cover a part or all of the front pillar garnish 16 (see FIG. 1) by the inflow of gas. Therefore, according to the curtain airbag 3 ⁇ / b> B including such a sub chamber 57, it is easy to sufficiently cover the front pillar garnish 16.
  • the sub chamber 57 preferably has an upper expansion portion 57 a above the extension line L ⁇ b> 4 virtually drawn so as to pass through the upper edge portion 58 of the main chamber 56. .
  • the upper expansion part 57a is curved so as to protrude obliquely rearward on the upper side of the vehicle. Note that not all of the upper inflating part 57a may be provided above the extension line L4, and a part of the upper inflating part 57a may be provided above the extension line L4.
  • the sub chamber 57 preferably has a side expansion portion 57 b on the side opposite to the main chamber 56 with respect to the tab 21 ⁇ / b> B.
  • the side expansion portion 57b is curved so as to protrude to the front side of the vehicle. Note that the entire side expansion portion 57b may not be provided on the side opposite to the main chamber 56 with respect to the tab 21B, and a portion of the side expansion portion 57b is opposite to the main chamber 56 with respect to the tab 21B. It may be provided on the side.
  • ⁇ Folding method of curtain airbag 3B> 8 9, and 10 are diagrams for explaining an example of a method of folding the curtain airbag 3B of FIG.
  • the side expansion portion 57b located on the vehicle front side with respect to the tab 21B is folded back toward the vehicle interior such that the surface of the panel 53a is valley-folded.
  • the side expansion portion 57b may be folded back at a folding line parallel to the Z-axis direction in the vicinity of the base of the tab 21B.
  • the main chamber 56 of the airbag body 51 together with the folded portion of the side inflating portion 57 b, extends from the lower edge 60 side to the upper edge 58 of the main chamber 56.
  • the main chamber 56 is preferably folded up to the base of the tabs 23, 24, 25, and 26, for example, by bellows folding. By being folded in this way, a bellows portion 81B having the X-axis direction as the longitudinal direction is formed.
  • the front bellows portion 81Ba which is the front side portion of the bellows portion 81B, extends upward from the bellows portion 81B without being folded. It is wound by the part 57a.
  • the front bellows portion 81Ba may be wound inside by the upper inflating portion 57a with the surface of the panel 53a on the inside of the vehicle inside.
  • winding part 82B is formed by winding front bellows part 81Ba so that it may be wrapped with upper expansion part 57a.
  • the notched portion 61 makes it easier to wind the front bellows portion 81Ba at the upper expansion portion 57a.
  • the planar curtain airbag 3B is formed into a folded body 30B having a bellows portion 81B and a winding portion 82B, as shown in FIG.
  • the folded body 30B is preferably held in shape by a binding tool (not shown) so that it does not collapse.
  • the folding body 30B, the bellows part 81B, and the winding part 82B are locations corresponding to the folding body 30, the main body part 81, and the front end part 82 of the curtain airbag 3 of FIG.
  • FIG. 11 and 12 are cross-sectional views of the front pillar portion 14 in section AA shown in FIG.
  • FIG. 11 is a cross-sectional view illustrating an example of a storage state of the front end portion 82 (that is, the winding portions 82A and 82B) of the folding body 30 before the expansion and deployment.
  • FIG. 12 is a cross-sectional view showing an example of a state in which the curtain airbag 3 is spread on the front pillar garnish 16 by the front end portion 82 being inflated and deployed.
  • FIG. 11 illustrates the case of the folded body 30A of FIG. 6, but the same applies to the folded body 30B of FIG.
  • the front end portion 82 is accommodated in a space between the front pillar body 15 and the front pillar garnish 16. Between the flange portion 15a of the front pillar body 15 and the edge 16a on the front side glass 10 side of the front pillar garnish 16, a gap S through which the front end portion 82 during expansion can pass is formed.
  • the gap S is closed by the weather strip 71 when the front end portion 82 is accommodated without being expanded.
  • the weather strip 71 is a rubber closing member that fills the gap S.
  • the weather strip 71 has a holding portion 71a and a lid portion 71b.
  • the sandwiching portion 71a is a means for fixing the weather strip 71 to the front pillar body 15 with the flange portion 15a interposed therebetween.
  • the lid portion 71b is a flap portion that closes the gap S so that an occupant in the vehicle cabin cannot visually recognize the front end portion 82 before the front end portion 82 expands, and releases the gap S by pressing the expanded front end portion 82. .
  • the front bellows portion 81Aa wound around the upper expansion portion 37a of the sub chamber 37 starts to expand faster than the upper expansion portion 37a. Therefore, the upper expansion portion 37a wound around the front bellows portion 81Aa is dragged out from the gap S in the X-axis direction as it expands while extending in the X-axis direction of the front bellows portion 81Aa.
  • the upper expansion portion 37a winds the front bellows portion 81Aa clockwise inward when the front end portion 82 is viewed from above in the Z-axis direction. That is, as shown in FIG. 6, the upper inflating portion 37a winds the front bellows portion 81Aa inwardly with the surface of the panel 33a inside the vehicle inside. Since it is wound in this way, the upper expansion portion 37a pushed out by the front bellows portion 81Aa is folded back at the edge 16a of the front pillar garnish 16 as shown in FIG. 12, and the passenger side exposure of the front pillar garnish 16 is exposed. Inflate and deploy so as to wrap around the surface 16b.
  • the airbag, the airbag apparatus, and the airbag mounting structure have been described by the embodiments.
  • the present invention is not limited to the above embodiments.
  • Various modifications and improvements, such as combinations and substitutions with some or all of the other embodiments, are possible within the scope of the present invention.
  • the gas introduction part 32 is provided at the center part of the upper edge part 38 of the airbag body part 31, but is provided on the vehicle rear side with respect to the center part of the airbag body part 31.
  • it may be provided on the front side of the vehicle.
  • the main chamber 36 and the sub chamber 37 may be expanded by another inflator instead of the common inflator. The same applies to the gas introduction part 52, the main chamber 56, and the sub chamber 57 of FIG.
  • the intermediate chamber 42 interposed between the main chamber 36 and the sub chamber 37 may be omitted, and the sub chamber 37 may be directly connected to the main chamber 36.
  • the intermediate chamber 62 in FIG. 2 may be omitted, and the sub chamber 37 may be directly connected to the main chamber 36. The same applies to the intermediate chamber 62 in FIG.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
PCT/JP2013/073691 2012-09-13 2013-09-03 Airbag, dispositif d'airbag et structure de montage d'airbag Ceased WO2014042040A1 (fr)

Applications Claiming Priority (2)

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JP2012201428A JP5959379B2 (ja) 2012-09-13 2012-09-13 エアバッグ、エアバッグ装置及びエアバッグ取り付け構造
JP2012-201428 2012-09-13

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WO2014042040A1 true WO2014042040A1 (fr) 2014-03-20

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
US20180201220A1 (en) * 2017-01-18 2018-07-19 Takata Corporation Curtain airbag, curtain airbag apparatus, and method for manufacturing curtain airbag apparatus
JP2018118686A (ja) * 2017-01-27 2018-08-02 タカタ株式会社 カーテンエアバッグ、カーテンエアバッグ装置及びカーテンエアバッグ装置の製造方法
CN108437926A (zh) * 2017-02-16 2018-08-24 奥托立夫开发公司 用于将气帘卷绕和/或折叠成管状体的包装方法
US10479314B2 (en) 2017-03-08 2019-11-19 Joyson Safety Systems Japan K.K. Curtain airbag and curtain airbag device
CN115814560A (zh) * 2022-11-30 2023-03-21 江苏润宇环境工程集团有限公司 一种强密封防泄漏油气回收吸附装置

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JP6102857B2 (ja) 2014-08-01 2017-03-29 トヨタ自動車株式会社 車両用カーテンエアバッグ装置
CN107235028B (zh) * 2016-03-29 2021-10-01 奥托立夫开发公司 安全气囊及安全气囊组件

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JP2001080446A (ja) * 1999-09-14 2001-03-27 Toyoda Gosei Co Ltd 頭部保護エアバッグ
JP2004256000A (ja) * 2003-02-26 2004-09-16 Nippon Plast Co Ltd カーテンエアバッグ
JP2008018837A (ja) * 2006-07-12 2008-01-31 Mazda Motor Corp カーテンエアバッグ装置

Patent Citations (3)

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JP2001080446A (ja) * 1999-09-14 2001-03-27 Toyoda Gosei Co Ltd 頭部保護エアバッグ
JP2004256000A (ja) * 2003-02-26 2004-09-16 Nippon Plast Co Ltd カーテンエアバッグ
JP2008018837A (ja) * 2006-07-12 2008-01-31 Mazda Motor Corp カーテンエアバッグ装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180201220A1 (en) * 2017-01-18 2018-07-19 Takata Corporation Curtain airbag, curtain airbag apparatus, and method for manufacturing curtain airbag apparatus
US10493943B2 (en) 2017-01-18 2019-12-03 Joyson Safety Systems Japan K. K. Curtain airbag, curtain airbag apparatus, and method for manufacturing curtain airbag apparatus
JP2018118686A (ja) * 2017-01-27 2018-08-02 タカタ株式会社 カーテンエアバッグ、カーテンエアバッグ装置及びカーテンエアバッグ装置の製造方法
CN108437926A (zh) * 2017-02-16 2018-08-24 奥托立夫开发公司 用于将气帘卷绕和/或折叠成管状体的包装方法
CN108437926B (zh) * 2017-02-16 2022-02-18 奥托立夫开发公司 用于将气帘卷绕和/或折叠成管状体的包装方法
US10479314B2 (en) 2017-03-08 2019-11-19 Joyson Safety Systems Japan K.K. Curtain airbag and curtain airbag device
CN115814560A (zh) * 2022-11-30 2023-03-21 江苏润宇环境工程集团有限公司 一种强密封防泄漏油气回收吸附装置

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