JP2014172570A - Airbag device - Google Patents

Airbag device Download PDF

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JP2014172570A
JP2014172570A JP2013049207A JP2013049207A JP2014172570A JP 2014172570 A JP2014172570 A JP 2014172570A JP 2013049207 A JP2013049207 A JP 2013049207A JP 2013049207 A JP2013049207 A JP 2013049207A JP 2014172570 A JP2014172570 A JP 2014172570A
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airbag device
extended piece
extended
piece
laminated
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JP5705252B2 (en
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Kenshi Torikai
顕史 鳥飼
Hitoshi Higuchi
等 樋口
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Honda Motor Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To suitably adjust pressure of inflation gas, while reducing manhours, by securing rigidity, by reducing the number of part items and a sewing part of an airbag device.SOLUTION: The airbag device 1 is provided for inflating and deploying by inflation gas supplied inside when an emergency state is caused, and comprises a body part 3 having base cloth 2 for integrally forming a plurality of extension piece parts 22 extending from a central part 21 and constituting the extension piece parts 22 and the central part 21 in an opposed bag shape by folding up the extension piece parts 22 toward the central part 21, a laminate part 31 formed in the body part 3 and laminated in the central part 21 by folding up the plurality of extension piece parts 22, an opening part 32 formed in the laminate part 31 and introducing the inflation gas and a gas generator (4) being a support member for supporting the laminate part 31 in a state of forming the opening part 32.

Description

本発明は、エアバッグ装置に係り、特に、基布の延片部を折り畳んで袋状に形成したエアバッグ装置に関する。   The present invention relates to an airbag device, and more particularly, to an airbag device formed in a bag shape by folding an extended piece of a base fabric.

エアバッグ装置は、車両の衝突時にインフレータ(ガス発生装置)から供給される膨張ガスによって車室内に展開されることにより乗員を保護する装置であり、ドライバー用、助手席用、後部座席用、側面衝突用等の種々のタイプが開発されている。   An air bag device is a device that protects an occupant by being deployed in a passenger compartment by an inflation gas supplied from an inflator (gas generator) in the event of a vehicle collision, and is used for a driver, a passenger seat, a rear seat, a side surface Various types, such as for collision, have been developed.

従来、エアバッグ装置には、内部に供給される膨張ガスの圧力を適切に制御するために、膨張ガスを適度に排出するベントホールを設けることが知られている(例えば、特許文献1)。ベントホールから排出する膨張ガスは、エアバッグの展開初期には排出量を少なくして初期応答性を高め、膨張展開中は排出量を多くして適度な柔軟性を確保することが求められる。   Conventionally, it is known that an airbag device is provided with a vent hole for appropriately discharging the inflation gas in order to appropriately control the pressure of the inflation gas supplied to the inside (for example, Patent Document 1). The inflation gas discharged from the vent hole is required to reduce the amount of discharge at the initial stage of deployment of the airbag to improve the initial response, and to increase the amount of discharge during inflation and deployment to ensure appropriate flexibility.

このため、例えば、特許文献1に記載の運転席用のエアバッグは、2枚の円形の基布を重ね合わせて縫製して袋体を形成し、内部にはインフレータから供給される膨張ガスが適切にベントホールから排出されるように、膨張ガスの排出流路を形成するためのガス規制用基布が縫合されている。   For this reason, for example, the airbag for a driver's seat described in Patent Document 1 forms a bag body by stacking and sewing two circular base fabrics, and an inflation gas supplied from an inflator is inside. A gas regulating base fabric for forming a discharge flow path for the expansion gas is sewn so as to be appropriately discharged from the vent hole.

特開平7−156730号公報(請求項1、段落0018、図1〜図3参照)JP-A-7-156730 (see claim 1, paragraph 0018, FIGS. 1 to 3)

しかしながら、特許文献1に記載のエアバッグでは、3枚の基布を縫合して形成するため、部品点数が多く、製作工数も多くなるという問題があった。また、ベントホールを形成するための縫合箇所も多く縫合長さも長くなるため、縫合により本来の基布の強度を低下させるという問題があった。   However, since the airbag described in Patent Document 1 is formed by stitching three base fabrics, there is a problem that the number of parts is large and the number of manufacturing steps is also large. In addition, since there are many stitched portions for forming the vent hole and the stitch length is long, there is a problem that the strength of the original base fabric is lowered by stitching.

本発明は、このような背景に鑑みてなされたものであり、部品点数および縫合部を低減して剛性を確保し工数削減を図りながら、かつ膨張ガスの圧力を好適に調整することができるエアバッグ装置を提供することを課題とする。   The present invention has been made in view of such a background, and can reduce the number of parts and stitching portions to ensure rigidity and reduce the number of man-hours, and can appropriately adjust the pressure of the inflation gas. It is an object to provide a bag device.

前記課題を解決するため、請求項1に係る発明は、緊急事態発生時に内部に供給される膨張ガスにより膨張展開するエアバッグ装置であって、中央部と、この中央部から延出する複数の延片部と、が一体に形成された基布を有し、前記延片部が前記中央部に向かって折り畳まれて当該延片部と当該中央部が対面した袋状に構成された本体部と、この本体部に形成され前記複数の延片部が折り畳まれて前記中央部で積層された積層部と、この積層部に形成され前記膨張ガスが導入される開口部と、この開口部が形成された状態で前記積層部を支持する支持手段と、を備えたことを特徴とする。   In order to solve the above-mentioned problem, an invention according to claim 1 is an airbag device that is inflated and deployed by an inflation gas supplied to an inside when an emergency occurs, and includes a central portion and a plurality of portions extending from the central portion. And a main body portion configured in a bag shape in which the extended piece portion is folded toward the central portion and the extended piece portion and the central portion face each other. A laminated portion formed in the main body portion and the plurality of extending pieces are folded and laminated at the central portion, an opening formed in the laminated portion and into which the expansion gas is introduced, and the opening And a supporting means for supporting the laminated portion in a formed state.

かかる構成によれば、本発明に係るエアバッグ装置は、前記複数の相互に隣接する延片部同士が前記中央部に向かって折り畳まれて袋状に構成されたことで、隣接する延片部の間に形成される隙間、または延片部同士が重なる部分(重なり代)に形成された隙間(以下、これらを「ベント用隙間」という。)から膨張ガスが排出されるため、ベント用隙間がベントホールの機能を奏することができる。   According to such a configuration, the airbag device according to the present invention is configured such that the plurality of mutually adjacent extending pieces are folded toward the central portion and configured in a bag shape, so that the adjacent extending pieces are Since the expansion gas is discharged from the gap formed between the gaps, or the gap formed in the portion where the extended pieces overlap each other (overlap allowance) (hereinafter referred to as “vent gap”), the vent gap Can function as a vent hole.

そして、隣接する延片部の間に形成される隙間の大きさ、および延片部同士が重なる範囲や領域を適宜調整することで、ベント用隙間から排出される膨張ガスの排出量や排出のタイミングを調整することができる。このため、ベント用隙間を備えたことで、ベントホールを形成するための縫合工程を削減または排除しながら好適に膨張ガスを排出することができる。   Then, by appropriately adjusting the size of the gap formed between adjacent extension pieces, and the range and area where the extension pieces overlap each other, the amount of exhaust gas discharged from the vent gap and the amount of discharge can be reduced. The timing can be adjusted. For this reason, the provision of the vent gap allows the inflation gas to be suitably discharged while reducing or eliminating the stitching step for forming the vent hole.

また、前記延片部を折り畳んで袋状に構成することで、1枚の基布からベントホール(ベント用隙間)が形成されたエアバッグ装置を製作することも可能である。そして、開口部が形成された状態で積層部を支持する支持手段を備えたことで、本体部を袋状に構成することができるため、縫合を少なくすることができる。
また、前記延片部が折り畳まれた積層部に膨張ガスが導入される開口部を形成することで、開口部周囲の剛性を確保することができる。
Moreover, it is also possible to produce an airbag device in which a vent hole (a vent gap) is formed from a single base fabric by folding the extended piece portion into a bag shape. And since the main-body part can be comprised in a bag shape by providing the support means which supports a lamination | stacking part in the state in which the opening part was formed, sewing can be decreased.
Moreover, the rigidity around the opening can be ensured by forming the opening into which the expansion gas is introduced into the laminated portion in which the extending piece is folded.

このようにして、本発明に係るエアバッグ装置は、部品点数および縫合部を少なくして剛性を確保し工数削減を図りながら、かつ膨張ガスの圧力を好適に調整することができる。   Thus, the airbag apparatus according to the present invention can suitably adjust the pressure of the inflation gas while reducing the number of parts and stitching portions to ensure rigidity and reduce the number of steps.

請求項2に係る発明は、請求項1に記載のエアバッグ装置であって、前記支持手段は、前記膨張ガスを供給するガス発生装置であること、を特徴とする。   The invention according to claim 2 is the airbag apparatus according to claim 1, wherein the support means is a gas generator for supplying the inflation gas.

かかる構成によれば、請求項2に係る発明は、前記支持手段をガス発生装置として、このガス発生装置を前記積層部に形成された開口部に連結することで、別途ブラケットを設けなくとも積層部に折り畳まれた複数の延片部をガス発生装置に共締めして開口部を固定することができる。
このため、開口部を固定するブラケット等の付随部品を削減して工数低減を図りながら、合わせて開口部周囲の剛性も確保することができる。
According to such a configuration, the invention according to claim 2 uses the support means as a gas generator, and connects the gas generator to an opening formed in the stack portion, thereby stacking without providing a separate bracket. The opening can be fixed by tightening together the plurality of extended pieces folded into the gas generator with the gas generator.
Therefore, it is possible to secure rigidity around the opening while reducing the number of incidental parts such as a bracket for fixing the opening and reducing the number of steps.

請求項3に係る発明は、請求項1または請求項2に記載のエアバッグ装置であって、前記延片部は、前記中央部から放射状に前記基布の周縁部に向かって延出され、前記周縁部に向かうにつれて周方向の幅が狭いこと、を特徴とする。   The invention according to claim 3 is the airbag device according to claim 1 or claim 2, wherein the extending piece portion extends radially from the central portion toward the peripheral portion of the base fabric, The width in the circumferential direction is narrower toward the peripheral edge.

かかる構成によれば、前記延片部の中央部側よりも周縁部側の幅を狭くすることで、延片部の周縁部側で重なる範囲が過剰にならないように好適に調整するとともに、かつ基布の歩留まりを向上させて材料費を節減することができる。   According to such a configuration, by narrowing the width on the peripheral edge side than the central part side of the extended piece part, it is suitably adjusted so that the range overlapping on the peripheral edge side of the extended piece part does not become excessive, and Material yield can be reduced by improving the yield of the base fabric.

請求項4に係る発明は、請求項1から請求項3のいずれか1項に記載のエアバッグ装置であって、前記延片部同士を一体に結合した結合部を備えたこと、を特徴とする。   The invention according to claim 4 is the airbag device according to any one of claims 1 to 3, wherein the airbag device includes a coupling portion that integrally couples the extending pieces. To do.

かかる構成によれば、隣接する延片部同士を一体に結合することで、ベント用隙間の大きさや範囲を適宜設定し膨張ガスの排出流路を規制して、膨張ガスの排出量や排出のタイミングをより好適に調整することができる。   According to such a configuration, the adjacent extension pieces are joined together to appropriately set the size and range of the vent gap and regulate the expansion gas discharge flow path, thereby controlling the expansion gas discharge amount and discharge. The timing can be adjusted more suitably.

請求項5に係る発明は、請求項1から請求項4のいずれか1項に記載のエアバッグ装置であって、前記延片部には、当該延片部の幅方向を拡げるように延片拡大部が付設されていること、を特徴とする。   The invention according to claim 5 is the airbag device according to any one of claims 1 to 4, wherein the extending piece portion is extended to expand the width direction of the extending piece portion. An enlarged portion is attached.

かかる構成によれば、前記延片拡大部を前記延片部に重ねるように折り畳むことで、ベント用隙間の大きさや範囲を適宜設定することができるため、縫合部の範囲を低減して剛性を確保しながら膨張ガスの排出量や排出のタイミングを好適に調整することができる。   According to such a configuration, the size and range of the gap for venting can be appropriately set by folding the extended piece enlarged portion so as to overlap the extended piece portion. The discharge amount and the discharge timing of the expansion gas can be suitably adjusted while ensuring.

請求項6に係る発明は、請求項5に記載のエアバッグ装置であって、前記延片拡大部同士を一体に結合した結合部を備えたこと、を特徴とする。   The invention according to claim 6 is the airbag apparatus according to claim 5, wherein the airbag device includes a coupling portion that integrally couples the extended piece enlarged portions.

かかる構成によれば、隣接する延片拡大部同士を一体に結合することで、膨張ガスの排出流路を規制して、膨張ガスの排出量や排出のタイミングをより好適に調整することができる。   According to such a configuration, by connecting the adjacent extended piece enlarged portions together, it is possible to regulate the discharge flow of the expansion gas and the timing of discharge more suitably by regulating the discharge flow path of the expansion gas. .

本発明に係るエアバッグ装置は、部品点数および縫合部を低減して剛性を確保し工数削減を図りながら、かつ膨張ガスの圧力を好適に調整することができる。   The airbag apparatus according to the present invention can suitably adjust the pressure of the inflation gas while reducing the number of parts and stitching portions to ensure rigidity and reduce the number of steps.

本発明の実施形態に係るエアバッグ装置の基本構成を示す分解斜視図である。It is a disassembled perspective view which shows the basic composition of the airbag apparatus which concerns on embodiment of this invention. 本発明の実施形態に係るエアバッグ装置の基布を折り畳む様子を示す図であり、(a)は折り畳む前の基布を開いた状態、(b)は折り畳んだ状態を示す車体側から見た底面図、(c)は積層部を示す(b)の一部の延片部を省略したA−A断面図である。It is a figure which shows a mode that the base fabric of the airbag apparatus which concerns on embodiment of this invention is folded, (a) opened the base fabric before folding, (b) was seen from the vehicle body side which shows the folded state A bottom view and (c) are AA sectional views in which a part of extended piece of (b) showing a lamination part is omitted. 本発明の実施形態に係るエアバッグ装置の延片部の一部を縫合する第1の変形例を示す図であり、(a)は折り畳む前の基布を開いた状態、(b)は折り畳んで縫合した状態を示す車体側から見た底面図である。It is a figure which shows the 1st modification which sews a part of extension piece part of the airbag apparatus which concerns on embodiment of this invention, (a) is the state which opened the base fabric before folding, (b) is folding. It is the bottom view seen from the vehicle body side which shows the state sewn by. 本発明の実施形態に係るエアバッグ装置の延片部に延片拡大部を設けた第2の変形例を示す図であり、(a)は折り畳む前の基布を開いた状態、(b)は折り畳む過程の状態を示す車体側から見た底面図である。It is a figure which shows the 2nd modification which provided the extended piece expansion part in the extended piece part of the airbag apparatus which concerns on embodiment of this invention, (a) is the state which opened the base fabric before folding, (b) FIG. 4 is a bottom view seen from the vehicle body side showing the state of the folding process. 本発明の実施形態に係るエアバッグ装置の延片部に延片拡大部を設けた第2の変形例を示す折り畳んだ状態の車体側から見た底面図である。It is the bottom view seen from the vehicle body side of the folded state which shows the 2nd modification which provided the extended piece expansion part in the extended piece part of the airbag apparatus which concerns on embodiment of this invention. 本発明の実施形態に係る第1の変形例におけるエアバッグ装置を膨らませた状態を示す図であり、(a)は運転者側から見た平面図、(b)は車体側から見た底面図である。It is a figure which shows the state which inflated the airbag apparatus in the 1st modification which concerns on embodiment of this invention, (a) is the top view seen from the driver | operator side, (b) is the bottom view seen from the vehicle body side It is.

本発明の実施形態に係る運転席用のエアバッグ装置1の基本構成について適宜図1と図2を参照しながら詳細に説明する。図1において、図の上が運転者側であり、図の下が車体側(ハンドル側)である。
運転席用のエアバッグ装置1は、図1に示すように、緊急事態発生時にガス発生装置4により本体部3の内部に膨張ガスを供給して、本体部3が膨張して衝撃を抑制する装置であり、車両のハンドル(不図示)に装着される。
A basic configuration of an airbag device 1 for a driver's seat according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2 as appropriate. In FIG. 1, the upper side of the figure is the driver side, and the lower side of the figure is the vehicle body side (the handle side).
As shown in FIG. 1, the airbag device 1 for a driver's seat supplies inflation gas to the inside of the main body 3 by the gas generator 4 when an emergency occurs, and the main body 3 is inflated to suppress an impact. It is a device and is attached to a steering wheel (not shown) of a vehicle.

なお、本実施形態においては、エアバッグ装置の一例として車両の運転席用のエアバッグ装置に適用した場合について説明するが、これに限定されるものではなく、車両でなくてもよいし、助手席用、側面衝突用等の種々のタイプのエアバッグ装置に適用することができる。   In the present embodiment, a case where the present invention is applied to an airbag device for a driver's seat of a vehicle will be described as an example of an airbag device. However, the present invention is not limited to this, and the vehicle may not be a vehicle. The present invention can be applied to various types of airbag devices such as seats and side collisions.

本発明の実施形態に係るエアバッグ装置1は、基布2を折り畳んで袋状に形成した本体部3と、この本体部3に形成された積層部31(図2(b)参照)と、この積層部31に形成され膨張ガスが導入される開口部32と、積層部31を支持する支持部材であるガス発生装置4と、を備えている。   The airbag apparatus 1 according to the embodiment of the present invention includes a main body 3 formed in a bag shape by folding the base fabric 2, and a laminated portion 31 (see FIG. 2B) formed in the main body 3. An opening 32 is formed in the laminated portion 31 and into which an expansion gas is introduced, and a gas generator 4 as a support member that supports the laminated portion 31 is provided.

基布2は、図2(a)に示すように、中央部21と、この中央部21から基布2の周縁部2aに向けて放射状に延出された複数である8枚の延片部22(22a,22b,22c,22d,22e,22f,22g,22h)と、を備え、基布2(本体部3)の剛性を確保するために縫合せずに1枚の布から裁断して中央部21と延片部22が一体に形成されたものが使用される。   As shown in FIG. 2A, the base fabric 2 includes a central portion 21 and a plurality of eight extending pieces that are radially extended from the central portion 21 toward the peripheral edge 2 a of the base fabric 2. 22 (22a, 22b, 22c, 22d, 22e, 22f, 22g, 22h), and in order to ensure the rigidity of the base fabric 2 (main body portion 3), it is cut from one piece of cloth without sewing. What formed the center part 21 and the extended piece part 22 integrally is used.

なお、本実施形態においては、縫合せずに1枚の布から裁断して中央部21と延片部22を一体に形成したが、これに限定されるものではなく、エアバッグ装置の用途や基布の形状等により、中央部21と延片部22を接着や縫合等によって一体とすることもできるし、基布2を部分的に補強する補強布(不図示)を中央部21や延片部22に接着や縫合して一体とすることもできる。   In the present embodiment, the central portion 21 and the extended piece portion 22 are integrally formed by cutting from one piece of cloth without stitching. However, the present invention is not limited to this. Depending on the shape of the base fabric and the like, the central portion 21 and the extended piece portion 22 can be integrated by bonding or stitching, or a reinforcing fabric (not shown) that partially reinforces the base fabric 2 can be formed in the central portion 21 or the extended portion. The piece 22 can be bonded or stitched together.

基布2の中央部21は、説明の便宜上、破線で補助線を示したが、正面視で8角形の多角形をなしている。
8枚の延片部22(22a,22b,22c,22d,22e,22f,22g,22h)は、中央部21の周囲を形成する8角形の各辺からそれぞれ基布2の周縁部2aに向けて放射状に延設されている。8枚の延片部22は、同じ形状であり、中央部21側から周縁部2a側に向かうにつれて周方向の幅が狭い細長い台形形状をなしている。延片部22(22a〜22h)は、それぞれ周縁部2a側に膨張ガスが本体部3(図2(b)参照)に導入される開口部32を構成する穿孔23(23a,23b,23c,23d,23e,23f,23g,23h)を備えている。
The center portion 21 of the base fabric 2 shows an auxiliary line with a broken line for convenience of explanation, but forms an octagonal polygon in front view.
Eight extending pieces 22 (22a, 22b, 22c, 22d, 22e, 22f, 22g, 22h) are directed from the respective sides of the octagon forming the periphery of the central portion 21 to the peripheral edge 2a of the base fabric 2, respectively. Are extended radially. The eight extending piece portions 22 have the same shape and have an elongated trapezoidal shape with a narrower width in the circumferential direction from the central portion 21 side toward the peripheral edge portion 2a side. The extending piece portions 22 (22a to 22h) each have a perforation 23 (23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h).

なお、本実施形態においては、中央部21を8角形の多角形としたがこれに限定されるものではなく、円形や6角形(図3参照)としてもよく、エアバッグ装置の形状や用途等に応じて、適宜種々の形状を採用することができる。
また、本実施形態においては、各延片部22を同じ形状としたが、これに限定されるものではなく、形や大きさの異なる種々の形状をなした延片部を組み合わせてもよいし、細長い台形形状の他、他の多角形や角を丸めた異形形状等適宜種々の形状を採用することができる。
In the present embodiment, the central portion 21 is an octagonal polygon. However, the present invention is not limited to this, and may be a circle or a hexagon (see FIG. 3). Depending on the case, various shapes can be appropriately adopted.
Moreover, in this embodiment, although each extended piece part 22 was made into the same shape, it is not limited to this, You may combine the extended piece part which made | formed various shapes from which a shape and a magnitude | size differ. In addition to the elongated trapezoidal shape, various other shapes such as other polygonal shapes and irregular shapes with rounded corners can be adopted as appropriate.

本体部3は、図2(b)に示すように、8枚の相互に隣接する延片部22同士が重なりながら、かつ延片部22が中央部21に向かって折り畳まれて延片部22と中央部21が対面した袋状に構成されている(図2(c)参照)
具体的には、本体部3は、図2(a)に示す基布2の折り畳み前の状態から、図2(b)に示すように、8枚の延片部22の穿孔23が中央部21の中心で重なるようにして開口部32(図1参照)を形成し、図2(b)の紙面貫通方向上から順に延片部22aから延片部22hまでを折り畳んで袋状に構成されている。
As shown in FIG. 2 (b), the main body 3 has eight pieces 22 extending from each other while the adjacent pieces 22 are overlapped with each other, and the pieces 22 are folded toward the central portion 21. And the central portion 21 are configured to face each other (see FIG. 2C).
Specifically, the main body 3 has a state in which the perforations 23 of the eight extended pieces 22 are formed in the central portion as shown in FIG. 2 (b) from the state before the base fabric 2 shown in FIG. 2 (a) is folded. An opening 32 (see FIG. 1) is formed so as to overlap with the center of 21 and is formed into a bag shape by folding from the extended piece 22a to the extended piece 22h in order from above in the paper surface penetration direction of FIG. ing.

かかる構成により、隣接する延片部22同士が重なる部分(重なり代)には、紙面に垂直方向に隙間(以下、「ベント用隙間24」という。)が形成されている。ベント用隙間24は、ガス発生装置4から内部に供給された膨張ガスを外部に排出(符号G参照)するベントホールの機能を奏することができる。   With this configuration, a gap (hereinafter referred to as a “vent gap 24”) is formed in a portion perpendicular to the paper surface at a portion where the adjacent extended piece portions 22 overlap (overlap allowance). The vent gap 24 can function as a vent hole that discharges the expanded gas supplied from the gas generator 4 to the outside (see symbol G).

なお、本実施形態においては、隣接する延片部22同士が重なる重なり代に形成された隙間をベント用隙間24としたが、これに限定されるものではなく、重なり代を設けずに平面視において隣接する延片部22同士の間に隙間が形成されるようにして、この隙間をベント用隙間として機能させることもできる。   In the present embodiment, the gap formed in the overlap margin where the adjacent extending piece portions 22 overlap is defined as the vent gap 24, but the present invention is not limited to this, and a plan view without providing an overlap margin is provided. In this case, a gap can be formed between the adjacent extended piece portions 22 so that this gap can function as a vent gap.

積層部31は、8枚の延片部22(22a〜22h)が折り畳まれて中央部21で積層されて形成された部分であり、この延片部22からなる積層部31に開口部32が形成されている。積層部31は、8枚の延片部22が車体側(図2(b)の紙面貫通方向の上側、図1の下側)から順次、延片部22a,22b,22c,22d,22e,22f,22g,22hの順に積層されている。   The laminated portion 31 is a portion formed by folding the eight extended piece portions 22 (22a to 22h) and laminated at the central portion 21, and the opening portion 32 is formed in the laminated portion 31 including the extended piece portion 22. Is formed. The laminated portion 31 includes eight extending pieces 22 in order from the vehicle body side (upper side in the paper penetration direction of FIG. 2 (b), lower side of FIG. 1), extending pieces 22a, 22b, 22c, 22d, 22e, The layers are laminated in the order of 22f, 22g, and 22h.

開口部32は、ガス発生装置4(図1参照)が発生した膨張ガスが導入される導入口であり、穿孔23(23a〜23h)が重なるようにして積層部31に形成されている。
かかる構成により、開口部32から導入された膨張ガスは、中央部21に向けて噴出され内部に充満する過程でベント用隙間24から一部が排出されることで、適切な速度で膨張するようになっている。また、8枚の延片部22(22a〜22h)が重なるようにして形成した積層部31に膨張ガスが導入される開口部32を形成することで、開口部32周囲の剛性を確保することができる。
The opening 32 is an introduction port into which the expansion gas generated by the gas generator 4 (see FIG. 1) is introduced, and is formed in the laminated portion 31 so that the perforations 23 (23a to 23h) overlap.
With this configuration, the inflation gas introduced from the opening 32 is partly discharged from the vent gap 24 in the process of being ejected toward the central portion 21 and filling the interior, so that the inflation gas is expanded at an appropriate speed. It has become. Moreover, the rigidity around the opening part 32 is ensured by forming the opening part 32 into which the expansion gas is introduced into the laminated part 31 formed so that the eight extending piece parts 22 (22a to 22h) overlap. Can do.

ガス発生装置4は、図1に示すように、本体部3に供給する膨張ガスを発生する装置であり、フランジ41aが形成されたインフレータ41と、固定ボルト42aが挿通されたリングプレート42と、を備えている。   As shown in FIG. 1, the gas generator 4 is a device that generates an inflation gas to be supplied to the main body 3, and includes an inflator 41 in which a flange 41 a is formed, a ring plate 42 through which a fixing bolt 42 a is inserted, It has.

そして、ガス発生装置4は、固定ボルト42aにより、フランジ41aとリングプレート42の間に積層部31(図2(b)参照)に形成された開口部32を挟んで固定することで、開口部32が形成された状態を保持したまま積層部31を支持して、インフレータ41を含んだモジュール化ができるようになっている。また、ガス発生装置4は、固定ボルト42aにより、積層部31(図2(b)参照)が形成されていない平坦な面を運転者側に向けるようにして、車両の運転席のハンドル(不図示)に固定される。   The gas generator 4 is fixed by sandwiching the opening 32 formed in the laminated portion 31 (see FIG. 2B) between the flange 41a and the ring plate 42 with the fixing bolt 42a. The laminated portion 31 is supported while maintaining the state where the 32 is formed, and a module including the inflator 41 can be formed. In addition, the gas generator 4 is configured such that the flat surface on which the stacked portion 31 (see FIG. 2B) is not formed by the fixing bolt 42a is directed toward the driver side, so that the handle (not fixed) It is fixed to the figure.

なお、本実施形態においては、部品点数および組み付け工数を削減するため、ガス発生装置4で積層部31を支持するようにしたが、これに限定されるものではなく取り付け箇所等に応じて、適宜、支持手段であるブラケット(不図示)を設けて、このブラケットを介してガス発生装置4を本体部3に固定して積層部31を支持し、ブラケットを車体側に固定してもよい。   In the present embodiment, in order to reduce the number of parts and the number of assembling steps, the gas generating device 4 supports the stacked portion 31. However, the present invention is not limited to this, and is appropriately selected according to the mounting location. Alternatively, a bracket (not shown) as support means may be provided, and the gas generating device 4 may be fixed to the main body portion 3 via the bracket to support the laminated portion 31, and the bracket may be fixed to the vehicle body side.

以上のように構成された本発明の実施形態に係るエアバッグ装置1の動作について、主として図2(b)を参照しながら説明する。本発明の実施形態に係るエアバッグ装置1は、複数の相互に隣接する延片部22同士が中央部21に重なるように折り畳んで袋状に構成することで、延片部22同士が重なる部分に形成されたベント用隙間24から膨張ガスを好適に排出することができる。   The operation of the airbag apparatus 1 according to the embodiment of the present invention configured as described above will be described with reference mainly to FIG. The airbag apparatus 1 which concerns on embodiment of this invention folds so that several mutually adjacent extended piece parts 22 may overlap the center part 21, and is a part which overlaps extended piece parts 22 by comprising in a bag shape. Expansion gas can be suitably discharged | emitted from the clearance gap 24 formed in this.

このベント用隙間24は、ベントホールの機能を奏するため、別途ベントホールを形成するためのガス流路規制用の基布を縫合する必要がないので、縫合工程を排除して1枚の基布からエアバッグ装置1を製作することができる。   Since the vent gap 24 functions as a vent hole, it is not necessary to sew a gas flow path regulating base fabric for forming a vent hole separately. Thus, the airbag device 1 can be manufactured.

そして、延片部22同士が重なる範囲や領域を適宜調整することで、ベント用隙間24から排出される膨張ガスの排出量や排出のタイミングを好適に調整することができる。
このようにして、本発明の実施形態に係るエアバッグ装置1は、部品点数を削減し縫合部を排除して剛性を確保し工数削減を図りながら、かつ膨張ガスの圧力を好適に調整することができる。
And the amount and timing of discharge of the expansion gas discharged | emitted from the clearance gap 24 for a vent can be adjusted suitably by adjusting suitably the range and area | region where the extended piece parts 22 overlap.
In this way, the airbag device 1 according to the embodiment of the present invention suitably adjusts the pressure of the inflation gas while reducing the number of parts, eliminating the stitching portion, ensuring rigidity and reducing the number of steps. Can do.

以上、本発明の基本構成に係る実施形態について説明したが、本発明は、前記した実施形態に限定されず、適宜変形して実施することが可能である。例えば、本実施形態においては、縫合工程を排除して1枚の基布2からベント用隙間24を備えたエアバッグ装置1を制作したが、これに限定されるものではなく、ベント用隙間24を規制する縫合部を設けることで、ベント用隙間24から排出される膨張ガスの排出量や排出のタイミングをより好適に調整することも可能である。   The embodiment according to the basic configuration of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and can be appropriately modified and implemented. For example, in the present embodiment, the airbag device 1 including the vent gap 24 is produced from one base fabric 2 without the stitching process, but the present invention is not limited to this, and the vent gap 24 is not limited thereto. It is also possible to more suitably adjust the discharge amount of the expansion gas discharged from the vent gap 24 and the discharge timing by providing a stitching portion that regulates the above.

以下、本発明の実施形態に係るエアバッグ装置1の変形例について、図3から図5を参照しながら説明する。
参照する図3は、第1の変形例に係る基布を示す正面図であり、(a)は基布を開いた状態、(b)は折り畳んで縫合した状態である。図4と図5は、第2の変形例に係る基布を示す正面図であり、図4の(a)は基布を開いた状態、(b)は折り畳む過程の状態、図5は折り畳んだ状態である。
第1の変形例と第2の変形例は、前記した本発明の実施形態に係るエアバッグ装置1に対して延片部の形状と基布の折り畳み方が異なり、他の構成は同様であるので主として相違点について説明し、他の詳細な構成の説明は省略する。
Hereinafter, modified examples of the airbag device 1 according to the embodiment of the present invention will be described with reference to FIGS. 3 to 5.
FIG. 3 to be referred to is a front view showing a base fabric according to a first modification, wherein (a) shows a state in which the base fabric is opened, and (b) shows a state in which the base fabric is folded and stitched. 4 and 5 are front views showing a base fabric according to a second modification, in which (a) in FIG. 4 is a state in which the base fabric is opened, (b) is in a state of folding, and FIG. 5 is in a folded state. It is a state.
The first modified example and the second modified example are different from the airbag device 1 according to the embodiment of the present invention described above in the shape of the extending piece and the way of folding the base fabric, and the other configurations are the same. Therefore, the difference will be mainly described, and description of other detailed configurations will be omitted.

第1の変形例は、図3に示すように、隣接する延片部22A同士が重なる重なり代部分(開口部を含んで形成された底辺が円弧状の略三角形の領域)に形成されたベント用隙間24Aの一部を縫合により結合した結合部である縫合部5(51,52,53,54,55,56)を備えた変形例である。   As shown in FIG. 3, the first modified example is a vent formed in an overlapping portion where adjacent extending piece portions 22 </ b> A overlap each other (a region of a substantially triangular arc having a base formed including an opening). This is a modification provided with a stitched portion 5 (51, 52, 53, 54, 55, 56) that is a joined portion in which a part of the clearance 24A is joined by stitching.

第1の変形例に係る本体部3A(図3(b)参照)を構成する基布2Aは、図3(a)に示すように、中央部21Aが6角形をなし、中央部21から6枚の延片部22A(22Aa,22Ab,22Ac,22Ad,22Ae,22Af)がそれぞれ放射状に延出されている。6枚の延片部22(22Aa,〜22Af)は、同じ形状であり、頂点を丸めた略三角形形状をなしている。6枚の延片部22には、それぞれ三角形の頂点に近い部分に開口部32A(図3(b)参照)を構成する穿孔23Aが形成されている。   As shown in FIG. 3 (a), the base fabric 2A constituting the main body 3A (see FIG. 3 (b)) according to the first modification has a hexagonal central portion 21A. Each of the extended piece portions 22A (22Aa, 22Ab, 22Ac, 22Ad, 22Ae, 22Af) extends radially. The six extending piece portions 22 (22Aa to 22Af) have the same shape and have a substantially triangular shape with rounded vertices. The six extending pieces 22 are each formed with a perforation 23 </ b> A that forms an opening 32 </ b> A (see FIG. 3B) at a portion close to the apex of the triangle.

縫合部5は、図3(b)に示すように、例えば、延片部22Aaと延片部22Abが重なる重なり代部分の一部に放射状に縫合部51を形成した。そして、縫合部5は、開口部32Aの近傍と開口部32Aから遠い中央部21の六角形の頂部の近傍には縫合部51を形成しないようにしている。他の縫合部52〜56についても同様である。   As shown in FIG. 3 (b), for example, the stitched portions 51 are radially formed in part of the overlapping portion where the extended piece portions 22 </ b> Aa and the extended piece portions 22 </ b> Ab overlap. And the stitching | suture part 5 does not form the stitching | suture part 51 in the vicinity of the opening part 32A, and the hexagonal top part of the center part 21 far from the opening part 32A. The same applies to the other stitched portions 52 to 56.

かかる構成により、第1の変形例に係る本体部3Aを備えたエアバッグ装置1A(図1参照)は、重なり代部分の大きさや範囲を考慮しながら縫合部5により、ベント用隙間24Aの大きさや範囲を適宜規制して、ベント用隙間24Aから排出される膨張ガスの排出量や排出のタイミングを好適に調整することができる。例えば、図3(b)に示すように、縫合部5を設けたことで、ベント用隙間24Aから2つの排出流路に分けて膨張ガスを排出することができる(符号G参照)。   With such a configuration, the airbag apparatus 1A (see FIG. 1) including the main body 3A according to the first modification has the size of the vent gap 24A by the stitching portion 5 in consideration of the size and range of the overlapping portion. By appropriately regulating the sheath range, it is possible to suitably adjust the discharge amount and discharge timing of the expansion gas discharged from the vent gap 24A. For example, as shown in FIG. 3B, by providing the stitching portion 5, the expansion gas can be discharged from the vent gap 24A into two discharge flow paths (see symbol G).

なお、本実施形態においては、延片部22A同士を縫合して結合したが、これに限定されるものではなく、縫合ではなく接着等により結合してもよい。   In the present embodiment, the extended piece portions 22A are joined together by stitching. However, the present invention is not limited to this, and may be joined by bonding or the like instead of stitching.

第2の変形例は、延片部22B(22Bb,22Bd,22Bf)に延片拡大部8(81〜86)を設けて延片拡大部8同士を縫合により結合した図4(b)に示す結合部である縫合部6(61,62,63)を備えた変形例である。   The second modified example is shown in FIG. 4B in which the extended piece portions 8 (81 to 86) are provided on the extended piece portions 22B (22Bb, 22Bd, 22Bf) and the extended piece enlarged portions 8 are joined together by stitching. It is a modification provided with the stitching | suture part 6 (61, 62, 63) which is a coupling | bond part.

第2の変形例に係る本体部3B(図5参照)を構成する基布2Bは、図4(a)に示すように、中央部21Bと6枚の延片部22B(22Ba,22Bb,22Bc,22Bd,22Be,22Bf)は、第1の変形例と同じであり、3枚の延片部22Bb,22Bd,22Bf)の両側にそれぞれ延片拡大部81,82、延片拡大部83,84、および延片拡大部85,86を付設した点で相違する。   As shown in FIG. 4 (a), the base fabric 2B constituting the main body 3B (see FIG. 5) according to the second modification has a central portion 21B and six extended pieces 22B (22Ba, 22Bb, 22Bc). , 22Bd, 22Be, and 22Bf) are the same as those of the first modification, and the extended piece portions 81 and 82 and the extended piece enlarged portions 83 and 84 are provided on both sides of the three extended piece portions 22Bb, 22Bd, and 22Bf), respectively. , And the point which extended the extended piece enlarged parts 85 and 86 differs.

縫合部6は、図4(b)に示すように、延片部22Bb,22Bd,22Bfを折り畳んだ状態で、例えば、延片拡大部81と86が重なる部分を縫合した縫合部63を備えている。他の縫合部61と62についても同様である。
このようにして、延片部22Bb,22Bd,22Bfを折り畳んだ上から、図5に示すように、延片部22Ba,22Bc,22Beを折り畳んで本体部3Bが構成されている。
As shown in FIG. 4B, the stitching portion 6 includes a stitching portion 63 in which, for example, a portion where the stretched piece expanding portions 81 and 86 overlap is stitched in a state where the stretched piece portions 22Bb, 22Bd, and 22Bf are folded. Yes. The same applies to the other stitched portions 61 and 62.
In this way, the folded piece portions 22Bb, 22Bd, and 22Bf are folded, and then the elongated piece portions 22Ba, 22Bc, and 22Be are folded to form the main body portion 3B as shown in FIG.

なお、本実施形態においては、延片拡大部8同士を縫合により結合したが、これに限定されるものではなく、縫合ではなく接着等により結合した結合部でもよい。   In addition, in this embodiment, although the extended piece expansion parts 8 were couple | bonded by sewing, it is not limited to this, The coupling | bond part couple | bonded by adhesion | attachment etc. instead of sewing may be sufficient.

第2の変形例では、膨張ガスを排出するベント用隙間24Bが延片拡大部8により規制されるため、主として中央部21B(図4(a)参照)における六角形の頂部の近傍から膨張ガスを排出する(符号G参照)。
このようにして、第2の変形例に係る本体部3Bを備えたエアバッグ装置1B(図1参照)は、延片部22Bに付設した延片拡大部8を延片部22Bに重ねるように折り畳んで縫合することで、膨張ガスの排出流路を適宜設定することができるため、第1の変形例よりも縫合部5(図3(b))の範囲を低減して剛性を確保しながら膨張ガスの排出量や排出のタイミングを好適に調整することができる。
In the second modified example, the vent gap 24B for discharging the inflation gas is restricted by the extension piece expanding portion 8, and therefore, the inflation gas mainly from the vicinity of the hexagonal top in the central portion 21B (see FIG. 4A). (See symbol G).
In this manner, the airbag apparatus 1B (see FIG. 1) including the main body portion 3B according to the second modification is configured so that the extended piece enlarged portion 8 attached to the extended piece portion 22B overlaps the extended piece portion 22B. By folding and suturing, the inflation gas discharge flow path can be set as appropriate, so that the range of the suturing portion 5 (FIG. 3B) is reduced and the rigidity is secured as compared with the first modification. The discharge amount of the expansion gas and the discharge timing can be suitably adjusted.

続いて、第1の変形例におけるエアバッグ装置1Aを膨らませた状態について、図6を参照しながら説明する。図6は、第1の変形例におけるエアバッグ装置を膨らませた状態を示す図であり、(a)は車体側から見た底面図、(b)は運転者側から見た平面図である。   Next, a state where the airbag device 1A according to the first modification is inflated will be described with reference to FIG. FIGS. 6A and 6B are diagrams showing a state where the airbag device according to the first modification is inflated, in which FIG. 6A is a bottom view seen from the vehicle body side, and FIG. 6B is a plan view seen from the driver side.

エアバッグ装置1Aを膨らませた状態において、図6(b)に示すように、中央部21A(図6(a)参照)の六角形の各頂部21Aa〜21Afを交互に重ねるように折り畳むことで、各頂部21Aa〜21Afからの膨張エアの流出を制御することができる。
例えば、延片部22Aaと延片部22Abが交差する頂部21Aaでは、延片部22Aaの中に延片部22Abを折り込むことで、延片部22Aaと延片部22Abが重なるように膨張させることができる。他の頂部21Ab〜21Afにおいても同様である。
In the state where the airbag device 1A is inflated, as shown in FIG. 6 (b), by folding the hexagonal top portions 21Aa to 21Af of the central portion 21A (see FIG. 6 (a)) alternately, The outflow of the expansion air from each of the top portions 21Aa to 21Af can be controlled.
For example, at the top portion 21Aa where the extended piece portion 22Aa and the extended piece portion 22Ab intersect, the extended piece portion 22Ab is folded into the extended piece portion 22Aa so that the extended piece portion 22Aa and the extended piece portion 22Ab are overlapped. Can do. The same applies to the other top portions 21Ab to 21Af.

1,1A,1B エアバッグ装置
2,2A,2B 基布
2a 周縁部
3,3A,3B 本体部
4 ガス発生装置
5 縫合部(結合部)
6 縫合部(結合部)
8 延片拡大部
21,21A,21B 中央部
22,22A,22B 延片部
23,23A,23B 穿孔
24,24A,24B ベント用隙間
31 積層部
32,32A,32B 開口部
41 インフレータ
41a フランジ
42 リングプレート
42a 固定ボルト
51〜55 縫合部
61〜63 縫合部
81〜86 延片拡大部
1, 1A, 1B Airbag device 2, 2A, 2B Base fabric 2a Peripheral part 3, 3A, 3B Main body part 4 Gas generator 5 Sewing part (joining part)
6 Suture part (joint part)
8 Expanded piece enlarged portion 21, 21A, 21B Central portion 22, 22A, 22B Extended piece portion 23, 23A, 23B Perforated 24, 24A, 24B Vent gap 31 Laminated portion 32, 32A, 32B Open portion 41 Inflator 41a Flange 42 Ring Plate 42a Fixing bolt 51-55 Suture part 61-63 Suture part 81-86 Extended piece enlarged part

Claims (6)

緊急事態発生時に内部に供給される膨張ガスにより膨張展開するエアバッグ装置であって、
中央部と、この中央部から延出する複数の延片部と、が一体に形成された基布を有し、
前記延片部が前記中央部に向かって折り畳まれて当該延片部と当該中央部が対面した袋状に構成された本体部と、
この本体部に形成され前記複数の延片部が折り畳まれて前記中央部で積層された積層部と、
この積層部に形成され前記膨張ガスが導入される開口部と、
この開口部が形成された状態で前記積層部を支持する支持部材と、
を備えたことを特徴とするエアバッグ装置。
An airbag device that is inflated and deployed by an inflation gas supplied inside when an emergency occurs,
A central portion and a plurality of extended piece portions extending from the central portion have a base fabric integrally formed,
A body part configured in a bag shape in which the extended piece part is folded toward the central part and the extended piece part and the central part face each other;
A laminated portion formed in the main body portion and the plurality of extended pieces are folded and laminated at the central portion;
An opening formed in the laminated portion and into which the expansion gas is introduced;
A support member that supports the laminated portion in a state in which the opening is formed;
An airbag device comprising:
前記支持手段は、前記膨張ガスを供給するガス発生装置であること、
を特徴とする請求項1に記載のエアバッグ装置。
The support means is a gas generator for supplying the expansion gas;
The airbag device according to claim 1.
前記延片部は、前記中央部から放射状に前記基布の周縁部に向かって延出され、前記周縁部に向かうにつれて周方向の幅が狭いこと、
を特徴とする請求項1または請求項2に記載のエアバッグ装置。
The extending piece portion extends radially from the central portion toward the peripheral portion of the base fabric, and the width in the circumferential direction is narrower toward the peripheral portion.
The airbag device according to claim 1 or 2, wherein
前記延片部同士を一体に結合した結合部を備えたこと、
を特徴とする請求項1から請求項3のいずれか1項に記載のエアバッグ装置。
Provided with a joint part integrally joining the extended piece parts;
The airbag device according to any one of claims 1 to 3, wherein
前記延片部には、当該延片部の幅方向を拡げるように延片拡大部が付設されていること、
を特徴とする請求項1から請求項4のいずれか1項に記載のエアバッグ装置。
The extended piece portion is provided with an extended piece enlarged portion so as to expand the width direction of the extended piece portion,
The airbag device according to any one of claims 1 to 4, wherein
前記延片拡大部同士を一体に結合した結合部を備えたこと、
を特徴とする請求項5に記載のエアバッグ装置。
It was provided with a connecting part that integrally connected the extended piece enlarged parts;
The airbag device according to claim 5.
JP2013049207A 2013-03-12 2013-03-12 Airbag device Expired - Fee Related JP5705252B2 (en)

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JP2016074352A (en) * 2014-10-08 2016-05-12 セーレン株式会社 Air bag
JP6367511B1 (en) * 2018-05-31 2018-08-01 Joyson Safety Systems Japan株式会社 Airbag
JP2018184124A (en) * 2017-04-27 2018-11-22 セーレン株式会社 Airbag
JP2019038449A (en) * 2017-08-28 2019-03-14 Joyson Safety Systems Japan株式会社 Airbag for driver seat

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JPH10157546A (en) * 1996-11-29 1998-06-16 Takata Kk Air bag for driver's seat
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JP2016074352A (en) * 2014-10-08 2016-05-12 セーレン株式会社 Air bag
JP2018184124A (en) * 2017-04-27 2018-11-22 セーレン株式会社 Airbag
JP2019038449A (en) * 2017-08-28 2019-03-14 Joyson Safety Systems Japan株式会社 Airbag for driver seat
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JP2019209728A (en) * 2018-05-31 2019-12-12 Joyson Safety Systems Japan株式会社 Air bag
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