WO2013073451A1 - エアバッグ装置及びエアバッグ装置におけるエアバッグの折り畳み方法 - Google Patents

エアバッグ装置及びエアバッグ装置におけるエアバッグの折り畳み方法 Download PDF

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Publication number
WO2013073451A1
WO2013073451A1 PCT/JP2012/079029 JP2012079029W WO2013073451A1 WO 2013073451 A1 WO2013073451 A1 WO 2013073451A1 JP 2012079029 W JP2012079029 W JP 2012079029W WO 2013073451 A1 WO2013073451 A1 WO 2013073451A1
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WO
WIPO (PCT)
Prior art keywords
airbag
side panel
inflator
occupant
folding
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/JP2012/079029
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
直哉 林
純一 清原
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.)
Ashimori Industry Co Ltd
Original Assignee
Ashimori Industry Co Ltd
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 Ashimori Industry Co Ltd filed Critical Ashimori Industry Co Ltd
Priority to DE112012004765.6T priority Critical patent/DE112012004765T5/de
Publication of WO2013073451A1 publication Critical patent/WO2013073451A1/ja
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
    • B60R21/201—Packaging straps or envelopes for inflatable members
    • 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
    • B60R21/2346—Soft diffusers
    • 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
    • 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

Definitions

  • the present invention relates to an airbag device and an airbag folding method in the airbag device.
  • FIG. 10 is a cross-sectional view of the conventional airbag device 100.
  • 110 is an airbag
  • 111 is a cylindrical tether belt that regulates the length of the airbag 110 when it is inflated and deployed.
  • the airbag 110 is housed in a holding member 114 that suppresses the expansion / deployment in the lateral direction of the airbag during initial expansion / deployment by pressing the outer circumferential side surface of the airbag 110.
  • the airbag 110 has its occupant side panel and inflator side panel shrink-folded in the direction of a vertical line (herein referred to as the center axis of the airbag) that passes through the center of the airbag 110 together in the holding member 114. It is fixed to the base plate 124 through a cushion ring 122 inserted into the airbag 110 together with the member 114.
  • the airbag cover 116 is fixed to the base plate 124 in a state where the holding member 114 is accommodated.
  • the end portion of the cylindrical tether belt 111 is sandwiched between the back surface side of the recess 116a formed on the occupant side surface of the airbag cover 116 and the connecting member 120, and the bolt 140a protruding to the back surface side of the decorative member 140. It is fixed with a nut 140b. Further, the end of the connecting member 120 is sandwiched between the cushion ring 122 and the base plate 124.
  • Reference numeral 112 denotes a gas rectifying member
  • reference numeral 111c denotes a stitched portion in which the tubular tether belt 111 is stitched to the airbag 110.
  • reference numeral 160 denotes a conventional folding apparatus.
  • this folding device has a support 162 for supporting a cylindrical tubular tether belt 111, and an airbag 110 that is coaxial with the support 162 and is outside as described later (FIG. 11E).
  • a table 161 having an outer cylinder 163, and a columnar shape having an outer diameter equal to that of the support 162 at a position vertically above the support 162, and sandwiching the upper end of the cylindrical tether belt 111 with the support 162
  • the holding tool 164 see FIG.
  • the outer diameter of the support 162 in the airbag device is formed smaller than the diameter so that it can rise through the insertion hole 122h of the inflator (not shown) of the cushion ring 122.
  • the bolt 122d of the cushion ring 122 is inserted into a small hole formed in the periphery of the inflator mounting hole of the airbag 110, and the bolt 122d is placed on the outer periphery of the support 162 of the table 161. Fix in the hole provided on the end face. Further, the head of the support 162 inserted through the inflator mounting hole of the cushion ring 122 is inserted into the cylinder of the cylindrical tether belt 111, and the airbag 110 is placed on the table 161 with the circumference of the cylindrical tether belt 111 being flat. To do.
  • the support 162 is raised to push up the cylindrical tether belt 111, thereby raising the airbag 110.
  • the support 162 since the length of the cylindrical tether belt 111 is substantially equal to half of the length of the airbag 110, the support 162 is removed from the table 161 at a height of about three times the maximum length of the cylindrical tether belt 111. Raise to position and stop at that position.
  • the holding tool 164 is lowered to hold the cylindrical tether belt 111 between the support tool 162 and the holding tool 164, and the support tool 162 and the holding tool 164 are lowered while maintaining the holding state.
  • the operation is temporarily stopped when the support 162 and the holding tool 164 are lowered to the half length of the cylindrical tether belt 111.
  • the outer airbag 110 is manually pulled up, and the cylindrical tether belt 111 is folded at a substantially intermediate position.
  • the folded cylindrical tether belt 111 is compressed together with the airbag 110 in a state where the folded cylindrical tether belt 111 is overlapped by simultaneously lowering the support tool 162, the holding tool 164, and the outer cylinder cylinder 163. While being done, it is shrink-folded as shown in FIG. 11H.
  • the gas rectifying member is actually attached integrally with the airbag 110 around the inflator mounting hole of the cushion ring 122, and when the airbag 110 is folded, The gas rectifying member 112 (see FIG. 10) also enters between the folded airbags 110 and is folded together with the airbag 110.
  • the airbag 110 of the prior art is folded as described above, but in the folding process from the state of FIG. 11F to the state of FIG. 11G, the support tool 162, the holding tool 164, the outer cylinder 163, and the two plates 165 are simultaneously attached. It is lowered and folded (shrink fold) (however, in reality, it does not become a beautiful bellows state as shown in FIG. 11H).
  • the airbag 110 in the folding process is in a state in which the occupant side panel 110a and the inflator side panel 110b are pulled straight upward from the table 161, and in the state of FIG. In a pressed state, the folded inflator side panel 110b and the occupant side panel 110a are arranged in series.
  • the gas rectifying member 112 (FIG. 10) disposed inside the inflator side panel 110b is folded together with the inflator side panel 110b by the above folding operation ( That is, it is folded).
  • the upper end of the gas rectifying member 112 does not reach the folded portion of the occupant side panel 110a, and the folded inner peripheral wall of the occupant side panel 110a is not covered with the gas rectifying member 112 and is exposed.
  • the airbag 110 folded as shown in FIG. 11H is incorporated into the airbag device as it is and gas is supplied from the inflator 130 (FIG. 10) during operation, the passenger facing the opening 114a (FIG. 10) of the holding member 114
  • the portion of the side panel 110a expands to the occupant side through the opening 114a, but the gas jetting from the inflator 130 directly hits the folded portion of the occupant side panel 110a that is not covered with the gas rectifying member 112 and the inner peripheral wall is exposed.
  • the holding member 114 expands from the opening 114a toward the passenger.
  • the folded portion becomes a lump and passes through the opening 114a as it is to the occupant side, and the airbag 110 is not pulled out from the opening 114a of the holding member 114 in order, and the airbag 110 is inflated in the lateral direction.
  • the effect of suppressing development cannot be obtained.
  • the gas rectifying member 112 folded into the inflator side panel 110b is pulled out, and the gas rectifying member 112 is folded along the inner peripheral wall of the passenger side panel 110a.
  • the assembly work takes time.
  • the present invention has been made in view of the above-described conventional problems, and its purpose is to draw out a gas rectifying member from a conventional folded airbag when the airbag is automatically folded. To eliminate the work and inflate / deploy the airbag, it is necessary to smoothly deploy the airbag from the occupant side panel through the opening of the holding member to enable a stable operation and to ensure the safety of the occupant.
  • the present invention is an airbag device, and includes an inflator, an airbag composed of an occupant-side panel and an inflator-side panel inflated by gas generated from the inflator, and the airbag is folded and stored, A holding member that suppresses inflation and deployment of the airbag in the lateral direction due to gas generated from the inflator at the initial stage of deployment of the airbag, and gas rectification that guides gas generated from the inflator to the portion of the occupant side panel that expands at the initial stage of deployment.
  • the present invention relates to a method for folding an airbag in the airbag device described in (1) above, wherein the center portion of the occupant side panel is located in a state where the center portion of the inflator side panel is fixed to a folding table.
  • a step of raising the fixed amount a step of folding the occupant side panel around the inflator side panel and disposing the occupant side panel on the outside of the inflator side panel, and the folding the occupant side panel and the inflator side panel, respectively Compressing the table toward the table and folding it along the central axis of the airbag.
  • the occupant-side panel and the inflator-side panel constituting the airbag are arranged separately, that is, the occupant-side panels that are separately folded are arranged so as to cover the outside of the inflator-side panel, so that
  • the airbag is smoothly deployed from the passenger side panel through the opening of the holding member. Stable operation is possible and occupant safety can be ensured.
  • FIG. 2 is a cross-sectional view taken along line II in FIG. 1. It is a perspective view which shows the back surface of the base plate shown in FIG. 4A is a front view of the cushion ring, and FIG. 4B is a side view showing a part thereof in cross section.
  • FIG. 5A is a perspective view showing the inside of the airbag in an inflated state
  • FIG. 5B is a perspective view of the airbag in a non-inflated state as seen from the back side.
  • FIG. 6A is a development view before covering the airbag.
  • FIG. 6B is a perspective view of the holding member before covering the airbag and the back side of the folded airbag.
  • FIG. 6C is a perspective view of the state in which the airbag is covered with the holding member as seen from the passenger side.
  • 6D is a perspective view seen from the back surface of the airbag covered with the holding member of FIG. 6C.
  • FIG. 9A shows the state which the expansion
  • FIG. 9A shows the state which the expansion
  • FIG. 1 is a front view showing a state in which the airbag apparatus according to the embodiment of the present invention is attached to a steering wheel
  • FIG. 2 is a cross-sectional view taken along line II of FIG.
  • the airbag apparatus 1 includes an airbag 10 and a holding member 14 that holds the airbag 10 and suppresses inflation / deployment in the side surface direction of the airbag as in the related art.
  • the airbag 10 is housed in the holding member 14 in a state in which the airbag 10 is shrink-folded along the central axis CL of the airbag as shown in the figure, and the holding member 14 is in a state in which the folded airbag 10 is housed.
  • the base plate 24 is fixed via a cushion ring 22 inserted into the airbag 10.
  • the base plate 24 is connected to the airbag cover 16 that houses the holding member 14.
  • the folded state of the airbag 10 is different from the conventional one described above, and the occupant side panel 10a and the inflator side panel 10b constituting the airbag 10 are the same as those of the inflator side panel 10b. It is folded separately along the central axis of the airbag 10 so as to cover the outside.
  • S indicates a joint portion (or outer peripheral edge portion of the airbag) between the occupant side panel 10a and the inflator side panel 10b.
  • FIG. 3 is a perspective view showing the back surface (surface opposite to the passenger side) of the base plate 24 shown in FIG.
  • the base plate 24 integrally fixes the inflator 30 (FIG. 2) and the airbag 10 and is formed in a substantially disc shape as in the conventional case.
  • the base plate 24 has an inflator mounting hole 24h at the center, a plurality of, for example, four airbag cover mounting pieces 24a at the periphery, and a pair for fixing the base plate 24 to the steering wheel 40 (FIG. 1).
  • the attachment pieces 24b are respectively cut and raised from the disk surface.
  • the inflator 30 (FIG. 2) is fixed in a state in which it protrudes and is disposed on the front side of the base plate 24 via the inflator mounting hole 24h, and when the airbag device 1 is operated, the gas of the inflator 30 is Side).
  • FIG. 4A is a front view of the cushion ring 22, and FIG. 4B is a side view showing a part thereof in cross section.
  • the cushion ring 22 has a substantially rectangular shape, and an inflator insertion hole 22h is provided at the center, and the cushion ring 22 is provided at each corner around the inflator insertion hole 22h.
  • a bolt insertion hole 22 a is provided through which a bolt 22 d for attachment to 24 is inserted.
  • a contact surface 22 b that can contact the front surface of the base plate 24 via the airbag 10 is formed on the back surface.
  • FIG. 5A is a perspective view showing the inside of the airbag 10 in an inflated state
  • FIG. 5B is a perspective view of the airbag 10 in a non-inflated state as seen from the back side.
  • the airbag 10 is formed into a bag shape that can be developed into a flat spherical shape (ellipsoidal shape) by sewing the outer peripheral edge portions of two substantially circular base fabrics (that is, the occupant side panel 10a and the inflator side panel 10b). Is formed.
  • An inflator mounting hole 10ah is formed in the back side of the airbag 10, that is, in the center of the inflator side panel 10b, and a bolt 22d (see FIG. 4B) of the cushion ring 22 is passed through the peripheral portion 10d of the inflator mounting hole 10ah.
  • a plurality of, for example, four small holes 10c are formed.
  • the passenger side panel 10a and the inflator side panel 10b of the airbag 10 are separately shrunk along the central axis of the airbag and stored in the airbag cover 16 so as to be compressed vertically as will be described later.
  • the gas rectifying member 12 is attached to the periphery of the inflator attachment hole 10ah of the inflator side panel 10b of the airbag 10 as described above.
  • This gas rectifying member 12 guides the gas to the vicinity of the portion that expands in the initial stage of the airbag 10 (from the circular opening 14h (FIG. 6) of the holding member 14 to the center portion of the occupant side panel 10a that is first deployed). To do.
  • the gas rectifying member 12 is made of, for example, a woven cloth and has a circular shape.
  • the shape of the gas rectifying member 12 is an inflator mounting hole 12a having a circular center, and the diameter of the inflator mounting hole 12a at the center is the inflator. It is the same as the diameter of the inflator mounting hole 10ah of the side panel 10b.
  • the length of the gas rectifying member 12 is a length that reaches the vicinity of a portion that expands in the initial stage of deployment of the airbag 10.
  • the inflator mounting hole 12a at the center of the gas rectifying member 12 and the inflator mounting hole 10ah of the inflator side panel 10b are aligned, The periphery of each inflator attachment hole 12a, 10ah is sewn.
  • the gas rectifying member 12 has a protection function for protecting the airbag 10 from the impact of heat and gas pressure, and a rectifying function for rectifying gas after the airbag 10 is folded and stored.
  • FIG. 6 shows an example of a holding member used in this embodiment.
  • FIG. 6A is a development view of the holding member 14 before covering the airbag 10.
  • the holding member 14 is made of woven cloth and has a substantially square shape.
  • a circular opening 14h is provided at the center of the holding member 14, and the bolts 22d of the cushion ring 22 are provided at the center and diagonal ends of the four sides of the square.
  • Eight small holes 14ah and 14bh are provided to engage with each other.
  • the substantially circular opening 14 h has a size necessary for the occupant side panel 10 a to pass through at the initial stage of inflation and deployment of the airbag 10.
  • FIG. 6B is a perspective view of the holding member 14 before covering the airbag 10 and the back side of the airbag 10 folded by the airbag folding device 50 (FIG. 7) described later.
  • the four small holes 14ah of the airbag 10 are respectively engaged with the four bolts 22d of the cushion ring 22 protruding from the folded airbag 10. Thereafter, the four small holes 14bh located on the diagonal line are fitted into two bolts 22d facing each other at the diagonal position.
  • FIG. 6C is a perspective view of a state in which the folded airbag 10 is covered with the holding member 14 as seen from the passenger side.
  • the passenger side panel 10a is exposed from the opening 14h.
  • FIG. 6D is a perspective view seen from the back surface of the airbag 10 covered with the holding member 14 of FIG. 6C.
  • the bolt 22d of the cushion ring 22 previously inserted into the inflator side panel 10b when the airbag 10 is folded is in a state of protruding from the peripheral portion 10d of the inflator mounting hole 10ah.
  • the gas rectifying member 12 is disposed by being folded on the inner periphery of the folded inflator side panel 10b, and is folded when the gas from the inflator 30 (FIG. 2) is injected into the airbag 10. It extends toward the passenger
  • the holding member 14 covers the side surface of the folded airbag 10 (inflator side panel 10b), and inflates and deploys the airbag 10 in the lateral direction by the gas generated from the inflator 30 at the initial stage of deployment of the airbag 10. Suppress.
  • the folding device 50 of the airbag 10 includes a base side member installed on the base 52 side and a ceiling support side member disposed at a predetermined interval upward from the base 52.
  • the base side member is installed on the base 52 with a folding table 51 fixed by support means (not shown), and is installed along the circumference of a predetermined diameter on the base 52, and can be extended and contracted through the through hole 51a of the folding table 51.
  • a plurality of lower cylinder mechanisms 53 a having a cylindrical head portion 54 a arranged to be movable up and down, and arranged on the base 52 at the center of the circumference of the lower cylinder mechanism 53 a
  • the lower center cylinder mechanism 53b is provided with a cylindrical head portion 54b that can be expanded and contracted through a through hole 51b formed at the center, that is, can move up and down.
  • the ceiling support side member includes a plurality of upper cylinder mechanisms 56a installed on the ceiling support 55 corresponding to the lower cylinder mechanism 53a, and an upper center cylinder mechanism 56b installed corresponding to the lower center cylinder mechanism 53b. It is made up.
  • the plurality of upper cylinder mechanisms 56a are installed along a circumference larger in diameter than the circumference where the lower cylinder mechanism 53a is arranged, and an upper central cylinder mechanism 56b is formed at the center of the circumference. is set up.
  • a cylindrical head portion 57a is attached to each of the expansion / contraction ends of the plurality of upper cylinder mechanisms 56a.
  • a disk-shaped upper plate 57b is attached to the telescopic end of the upper central cylinder mechanism 56b.
  • the head portion 57a of the upper cylinder mechanism 56a is disposed around the upper plate 57b so as to be movable relative thereto.
  • the airbag 10 is first placed on the folding table 51, and the gas rectifying member 12 attached to the periphery of the inflator side panel 10 b and the inflator attachment hole 10 ah is fixed to the folding table 51. That is, for example, four small holes 10c (FIG. 5A) formed in the peripheral portion 10d (FIG. 5) of the inflator mounting hole 10ah of the airbag 10, and similar small holes (not shown) of the gas rectifying member 12 4 holes (not shown) provided in the periphery of the through hole 51b of the folding table 51 through which the bolts 22d (FIG. 4B) of the cushion ring 22 disposed in the airbag 10 are inserted. And fixed with a nut (not shown).
  • FIG. 7A shows a state in which the airbag 10 is fixed and placed on the folding table 51 of the airbag folding apparatus 50.
  • the occupant-side panel 10a and the inflator-side panel 10b of the airbag 10 are up (front side) and down (back side).
  • the cylindrical head portion 54b of the lower central cylinder mechanism 53b waits in the through hole 51b of the folding table 51 and in the inflator mounting hole 10ah of the inflator side panel 10b of the airbag 10 attached to the folding table 51. is doing.
  • the lower central cylinder mechanism 53b is operated, and the occupant side panel 10a of the airbag 10 is moved to the lower surface of the upper plate 57b of the stationary upper central cylinder mechanism 56b at the upper end of the head portion 54b as shown in FIG. 7B. Push up until it touches. Subsequently, the head portion 54a of each lower cylinder mechanism 53a arranged in a circumferential shape is raised, and the tip of the head portion 54a is brought into contact with the back side of the lower inflator side panel 10b.
  • the panel portion on the outer side from the vicinity of the joint S that is, the occupant side panel 10a
  • the panel portion on the outer side from the vicinity of the joint S is restrained by the upper plate 57b on the upper end side and pushed up by the head portion 54a on the lower end side.
  • the panel 10b will be in the state arrange
  • the head portion 57a at the expansion / contraction end of the upper cylinder mechanism 56a is lowered.
  • the head portion 57a of the upper cylinder mechanism 56a is The occupant-side panel 10a is brought into contact with the front surface of the occupant-side panel 10a, and the occupant-side panel 10a is pushed and bent downward so that the occupant-side panel 10a is rotated around the tip of the head portion 54a of the lower cylinder mechanism 53a.
  • FIG. 7D shows the shape of the occupant side panel 10a bent in this way.
  • the occupant side panel 10a of the airbag 10 is sandwiched between the head portion 57a of the outer upper cylinder mechanism 56a and the head portion 54a of the inner lower cylinder mechanism 53a and folded in half.
  • the head portions 54a, 54b, 57a and the upper plate 57b of all the cylinder mechanisms 53a, 53b, 56a, 56b are lowered at a constant speed all at once.
  • the airbag 10 fixed to the folding table 51 that is, the occupant side panel 10a and the inflator side panel 10b are respectively crushed by the upper plate 57b, that is, shrink-folded to the central axis of the airbag 10. It will be folded along and will be in the state shown in FIG. 7E.
  • the occupant side panel 10a is disposed between the head portion 57a of the upper cylinder mechanism 56a and the head portion 54a of the lower cylinder mechanism 53a, so that the upper and lower cylinder mechanisms 56a, 56a, The inflator side panel 10b and the gas rectifying member 12 are folded in a central region surrounded by the head portion 54a of the lower cylinder mechanism 53a and the head portion 54b of the lower central cylinder mechanism 53b. .
  • FIG. 7F is a cross-sectional view showing a state in which the airbag 10 in which the occupant side panel 10a and the inflator side panel 10b are separately folded is held by the holding member 14 as described above.
  • the occupant side panel 10a is folded outside so as to cover the folded inflator side panel 10b, and the inflator side panel 10b is folded so as to surround the periphery of the inflator 30, Since the gas rectifying member 12 is attached to the inflator side panel 10b as described above, the gas rectifying member 12 is also folded around the inflator 30 at the same time.
  • FIG. 8A to 8E are cross-sectional views showing how the airbag 10 in the state of being accommodated in the holding member 14 is inflated and deployed when the airbag apparatus is in operation.
  • the gas injected from the inflator 30 during operation of the airbag apparatus is a gas rectifying member.
  • 12 is a passenger-side panel 10a that covers the ceiling surface of the space formed on the inner periphery of the inflator-side panel 10b that is guided and folded.
  • the occupant side panel 10a After the occupant side panel 10a is first deployed outside the opening 14h, the deployment in the side surface direction is suppressed by the holding member 14, so that the occupant side panel 10a deployed outside generates gas pressure from the inflator 30. In response, the outer peripheral portion (occupant side panel 10a) of the airbag is deployed in order so that the remaining passenger side panel 10a around it is pulled out from the opening 14h. Further, in the process, as shown in FIG. 8C, the occupant side panel 10a smoothly expands outward and sideward while inverting the edge of the opening 14h. FIG. 8D shows the occupant side panel 10a inflated and deployed in this manner.
  • FIG. 9A is a view of the airbag 10 according to the present embodiment as viewed from the side of the airbag 10 and the occupant O who is not normally seated at a relatively early stage of inflation / deployment.
  • the occupant side panel 10a is first inflated and deployed.
  • the occupant-side panel 10a is deployed along the surface shape of the occupant's body to protect the occupant's body.
  • the inflator side panel 10b is in a stage where it is pulled out from the holding member 14, and its joint (outer peripheral edge) S is located in the direction opposite to the occupant than the occupant side panel 10a, and the occupant side panel 10a
  • the leading end side to be deployed enters under the 12 o'clock side rim of the steering wheel 40.
  • FIG. 9B is a view similar to FIG. 9A showing a state in which the airbag has been further expanded and deployed.
  • the expansion from the lower part of the occupant O's chin to the outside is more remarkable. That is, as shown in FIG. 9B, the joint portion (outer peripheral edge portion) S positioned on the side opposite to the occupant side from the occupant side panel 10 a is directed toward the counter occupant side as the inflator side panel 10 b is pulled out from the holding member 14. Expand and expand. That is, since there is a relatively large space under the 12 o'clock side rim of the steering wheel 40, the airbag sinks under the 12 o'clock side rim of the steering wheel 40 and expands and deploys. Therefore, the passenger's chin is not hit directly from below.
  • the airbag 10 (the occupant side panel 10a, the inflator side panel 10b) is folded, the occupant side panel 10a covers the outer side of the inflator side panel 10b. Since the airbag is folded, deployment of the airbag always starts from deployment of the central portion of the occupant side panel 10a toward the occupant side through the opening 14h of the holding member 14, and thereafter, the central portion of the occupant side panel 10a deployed outward is Subsequently, the side surface of the occupant side panel 10a (expanding radially therefrom) is smoothly deployed so as to be pulled out.
  • the gas rectifying member 12 is folded together with the inflator side panel 10b of the airbag 10 and folded into the inflator side panel as described above.
  • the occupant side panel 110a and the inflator side panel 110b are arranged in a straight line (in series) as shown in FIG.
  • the folded passenger side panel 10a is arranged outside the folded inflator side panel 10b (arranged in parallel). Therefore, even if the gas rectifying member 12 is folded into the inflator side panel 10b, when gas is supplied from the inflator 30, the gas does not directly act on the folded portion of the occupant side panel 10a.
  • the deployment starts from the central portion of the occupant side panel 10a facing the opening 14h of the holding member 14 through the opening 14h, and the folded portion of the occupant side panel 10a is deployed through the opening 14h while being gradually pulled out (see FIG. 8B to FIG. 8D: That is, the occupant side panel 10a is released to the occupant side through the opening 14h after the folded portion lump is released.
  • the gas supplied from the inflator 30 acts on the inside of the inflator side panel 10b and tries to spread outward.
  • the gas rectifying member 12 folded into the inflator side panel 10b is pulled out from the inflator side panel 10b, and the passenger side end of the gas rectifying member 12 is positioned in the vicinity of the opening 14h of the holding member 14. Therefore, since the gas rectifying member 12 can maintain the function of rectifying the gas injected from the inflator 30, the gas rectifying member folded into the inflator side panel is manually operated after the folding operation as in the prior art. There is no need to pull it out.
  • Airbag apparatus 10 ... Airbag, 10a ... Passenger side panel, 10b ... Inflator side panel, 12 ... Gas rectifying member, 14 ... Holding member, 16 ... Airbag cover, 22 ... Cushion ring, 24 ... Base plate, 30 ... Inflator, 40 ... Steering wheel, 50 ... Folding device, 51 ... Folding table, 52 ... Base 53a... Lower cylinder mechanism, 53b... Lower central cylinder mechanism, 54a, 54b... Head portion, 55... Ceiling support, 56a. , 57a... Head portion, 57b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
PCT/JP2012/079029 2011-11-15 2012-11-08 エアバッグ装置及びエアバッグ装置におけるエアバッグの折り畳み方法 Ceased WO2013073451A1 (ja)

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JP2011250034A JP5951232B2 (ja) 2011-11-15 2011-11-15 エアバッグ装置及びエアバッグ装置におけるエアバッグの折り畳み方法

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Cited By (1)

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WO2015036527A1 (de) * 2013-09-13 2015-03-19 Autoliv Development Ab Airbagsystem, fahrzeugsitz mit einem airbagsystem und verfahren zum aktivieren eines airbagsystems

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JP6422738B2 (ja) * 2014-10-31 2018-11-14 芦森工業株式会社 エアバッグ装置
WO2019069143A2 (en) * 2017-03-29 2019-04-11 Nio Nextev Limited MECHANISM AND METHOD FOR CONTROLLING THE INFLATABLE SAFETY CUSHION DEPLOYMENT TRACK WITH POSITIONER
US10343643B2 (en) 2017-03-29 2019-07-09 Nio Nextev Limited Airbag deployment trajectory control mechanism and method
US11623596B2 (en) * 2018-08-13 2023-04-11 Autoliv Development Ab Air bag device and method for manufacturing same
JP7447873B2 (ja) * 2021-06-28 2024-03-12 豊田合成株式会社 エアバッグ装置

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JP2000085511A (ja) * 1998-09-16 2000-03-28 Takata Kk 助手席用エアバッグ装置
WO2007010776A1 (ja) * 2005-07-15 2007-01-25 Ashimori Industry Co., Ltd. エアバッグの折り畳み装置及び折り畳み方法
JP2009006800A (ja) * 2007-06-27 2009-01-15 Toyota Motor Corp 車両用エアバッグ装置及びエアバッグの折り畳み方法
US20090189371A1 (en) * 2008-01-29 2009-07-30 Kenneth Budowick Airbag folding arrangement

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JP2000085511A (ja) * 1998-09-16 2000-03-28 Takata Kk 助手席用エアバッグ装置
WO2007010776A1 (ja) * 2005-07-15 2007-01-25 Ashimori Industry Co., Ltd. エアバッグの折り畳み装置及び折り畳み方法
JP2009006800A (ja) * 2007-06-27 2009-01-15 Toyota Motor Corp 車両用エアバッグ装置及びエアバッグの折り畳み方法
US20090189371A1 (en) * 2008-01-29 2009-07-30 Kenneth Budowick Airbag folding arrangement

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Publication number Priority date Publication date Assignee Title
WO2015036527A1 (de) * 2013-09-13 2015-03-19 Autoliv Development Ab Airbagsystem, fahrzeugsitz mit einem airbagsystem und verfahren zum aktivieren eines airbagsystems

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JP2013103661A (ja) 2013-05-30
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