JP5968292B2 - Gas guide and airbag device for vehicle airbag - Google Patents

Description

  The present invention relates to a gas guide that guides gas from an inflator into a cushion of a vehicle airbag, and an airbag apparatus including the gas guide.

  Modern vehicles are almost equipped with airbags as standard. An airbag is a safety device that operates in an emergency such as a vehicle collision, and inflates and deploys with gas pressure to receive and protect an occupant. There are various types of airbags depending on the installation location and application. For example, in order to protect an occupant from a collision from the front-rear direction, a front airbag is provided in the center of the steering. A curtain airbag that inflates and deploys along the side window is provided near the ceiling of the wall to protect the occupant from side collisions and subsequent rollover (rollover). A side airbag that inflates and deploys to the side of the vehicle is provided.

  The airbag is provided with a gas generator called an inflator as a gas supply source. There are various types of inflators depending on the type of air bag and its installation location. For example, a disc type (disc type) inflator is mainly used for the front airbag, and a cylinder type (tubular type) inflator is mainly used for the curtain airbag and the side airbag.

  In order to restrain an occupant accurately with an air bag, the air bag needs to be quickly inflated and deployed, and consideration is given to the air bag so that gas can efficiently reach various locations inside the air bag. For example, in the curtain airbag described in Patent Document 1, a diffuser (gas guide) is installed at a position where an inflator is attached, and gas can be efficiently guided to the front and rear of the vehicle. Moreover, according to this gas guide, it is possible to protect the cushion from high-temperature and high-pressure gas immediately after jetting.

JP 2011-246095 A

  In order to improve the performance and the like of the above-described gas guide, a configuration in which gas is more difficult to leak, a configuration with higher durability, and a simpler configuration are required. In this respect, in the gas guide of Patent Document 1, the upper edge of the inclined portion is the joint of the base fabric. It is not preferable that gas pressure is applied to such a joint of the base fabric from the viewpoint of gas leakage and durability.

  In view of such problems, the present invention provides a gas guide for a vehicle air bag having a simple structure and preventing gas leakage and improving durability, and an air bag apparatus including the gas guide. It is aimed.

  In order to solve the above-mentioned problems, a typical structure of a gas guide for a vehicle airbag according to the present invention is formed in a hollow shape by joining a base fabric, and gas ejected from a cylindrical inflator is used for a vehicle. A gas guide for guiding into an airbag cushion, wherein the inflator is inserted along the longitudinal direction of the cushion, and the longitudinal direction of the cushion forward or backward from the first opening. A first gas introduction path extending along the vehicle, a second gas introduction path that is provided continuously from the first gas introduction path in the vehicle lower direction of the first gas introduction path, and guides gas downward in the vehicle, and an inflator An inclined surface formed by a non-joint portion inclined from the end of the first gas introduction path to the second gas introduction path so as to receive gas from the first gas introduction path and the vehicle lower side of the second gas introduction path A third gas introduction path continuously extending from the second gas introduction path in the longitudinal direction of the vehicle, and a second opening provided at one end of the third gas introduction path in front of the vehicle to supply gas into the cushion A third opening that is provided at the other rear end of the third gas introduction path to supply gas into the cushion, and a lower joint that joins the ends of the base fabric along the lower part of the third gas introduction path And a line.

  In the above configuration, the inclined surface on which the gas hits from the inflator through the first gas introduction path is formed by a non-joint portion without a joint of the base fabric in consideration of gas leakage and durability against gas pressure. Therefore, it is possible to efficiently prevent gas leakage and improve durability against gas pressure.

  In the above lower joining line, it is preferable that one end and the other end of the base fabric are overlapped and joined so as to be inside and outside the third gas introduction path. The lower joint line existing in the lower part of the third gas introduction path is likely to be directly hit by the gas from the upper second gas introduction path. Therefore, in the above configuration, as a countermeasure against this gas, one end and the other end of the base fabric are joined to each other so as to be inside and outside the third gas introduction path, that is, vertically. Thereby, the gas from the second gas introduction path is less likely to hit the joint of the base fabric of the lower joint line. Therefore, it is possible to prevent gas leakage and improve durability against gas pressure.

  The base fabric includes a quadrangular first region and a second region that branches in a V shape from the center of one side of the first region, and the gas guide further includes a first region from the first region to the second region. The central fold line formed by folding the center of the second region and the V-shaped outer edges of the second region are each along one side of the first region, and the outer edge of the second region and the one side of the first region are mutually connected to the gas guide. A side joining line formed by overlapping and joining the inner side and the outer side, and the inclined surface of the second gas introduction path is formed as a surface along the central folding line on the second region, The lower joining line may be formed by overlapping and joining the ends continuous from the first region to the second region after joining the side joining lines.

  According to the said structure, the inclined surface of a 2nd gas introduction path can be formed without providing the joint line of a base fabric. Further, since the side joining line is provided so that one end and the other end are inside and outside of the gas guide, it is difficult for the gas to hit the joint of the base fabric. With this configuration, it is possible to further prevent gas leakage in the gas guide and improve durability against gas pressure.

  The first gas introduction path and the third gas introduction path are joined together in parallel to the central fold line between the first fold line and the lower joint line by overlapping the first regions by being folded at the central fold line. It is good to be partitioned. With this configuration, the first gas introduction path and the third gas introduction path can be realized with a simple configuration.

  The gas guide may further include a reinforcing cloth that extends from the first gas introduction path to the second gas introduction path and directly receives the gas from the inflator. By providing the reinforcing cloth in a portion where gas immediately after jetting from the inflator is easily hit, it is possible to efficiently improve the durability of the gas guide.

  The lower joint line may be formed by sewing. Further, the side part joining line may be formed by sewing. For example, the lower joint line and the side joint line are sewn because the gas does not easily hit the joint of the base fabric when the ends of the base fabric are overlapped with each other as described above. However, it is possible to exhibit sufficient durability against gas pressure.

  In order to solve the above-mentioned problems, a typical configuration of an airbag device according to the present invention is configured in a bag shape, and is wound or folded to form an elongated storage form that is mounted on the upper portion of a vehicle compartment side wall. 8. The inflator according to claim 1, wherein the cushion has a cylindrical shape and is arranged in parallel to the longitudinal direction of the cushion, and has a gas ejection hole through which gas supplied to the cushion is ejected on the distal end side. And a gas guide. Since the above-described gas guide is designed to prevent gas leakage and improve durability against gas pressure, the airbag apparatus can be efficiently inflated and deployed by including the gas guide.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the gas guide of the vehicle airbag and the airbag apparatus provided with this gas guide which were the simple structure, and aimed at the leakage prevention and durability improvement of the gas.

It is the figure which illustrated the curtain airbag as embodiment of the vehicle airbag apparatus of this invention. It is the figure which illustrated the structure of the inflator attachment part vicinity of FIG.1 (b). It is the figure which illustrated the gas guide of FIG. 2 planarly. It is each sectional drawing of the gas guide of FIG.3 (b). It is a figure of the modification of the gas guide illustrated corresponding to FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  FIG. 1 is a diagram illustrating a curtain airbag 100 as an embodiment of a vehicle airbag device of the present invention. FIG. 1A is a view of the interior of the vehicle as viewed from the vehicle inner side in the vehicle width direction, and illustrates a storage form of the cushion 102 of the curtain airbag 100. The cushion 102 is a portion that is inflated and deployed in an emergency to protect the occupant, and FIG. 1B illustrates the cushion 102 being inflated and deployed. In the present application, the expression “upper” indicates the vehicle ceiling direction as viewed from the point of interest, and the expression “lower” indicates the vehicle floor direction as viewed from the point of interest.

  As illustrated in FIG. 1A, the cushion 102 is wound to form a roll-shaped storage form that is long in the front and rear of the vehicle, and is mounted on the upper portion of the side wall (the roof side rail 104) in the vehicle interior. . Normally, since the roof side rail 104 is covered with a roof trim (not shown), the installed cushion 102 is not visible from the vehicle interior. The storage form of the cushion 102 can also be realized by folding.

  The curtain airbag 100 includes an inflator 106, which is a gas generator, on an upper portion of the cushion 102. The cushion 102 is inflated by the pressure of gas supplied from the inflator 106 to restrain the occupant. The inflator 106 employed in this embodiment is a cylinder type (cylindrical type). Inflators that are currently popular are types that are filled with a gas generating agent and burn it to generate gas, types that are filled with compressed gas and supply gas without generating heat, and There are types including both a gas generating agent and a compressed gas. Any type of inflator 106 can be used.

  In the state of FIG. 1 (a), when a side collision or rollover (rollover) occurs in the vehicle 108, a sensor (not shown) provided in the vehicle 108 first detects an impact, which causes the inflator. A signal is sent to 106. Upon receiving this signal, the inflator 106 operates and supplies gas to the cushion 102. When the gas from the inflator 106 is received, the cushion 102 is inflated and deployed downward along the side wall of the passenger compartment (such as the side window 110 in FIG. 1A) as illustrated in FIG. 1B. And protect passengers.

  Since the cushion 102 is for a curtain airbag, it has a large shape that can be expanded along the side surface of the vehicle interior. The cushion 102 is formed into a bag shape by sewing and bonding two base fabrics constituting the surface thereof, sewing or bonding using OPW (One-Piece Woven).

  The inflating region of the cushion 102 is partitioned into a plurality of small rooms (chambers) in consideration of the position where the occupant can contact. For example, chambers 114, 116 and the like are provided on the front side of the vehicle for the purpose of receiving passengers in the front seat 112. Further, on the rear side of the vehicle, chambers 120, 121 and the like are provided on the side of the rear seat 118.

  A plurality of tabs 124 are provided on the upper edge 122 of the cushion 102 as attachment parts to the vehicle. The tab 124 has a band shape and is attached to the roof side rail 104 using a bolt, a dedicated bracket, or the like. A string-like strap 126 is provided at the front end of the cushion 102. The strap 126 is a member that connects the cushion 102 and the front pillar 105. The strap 126 suppresses the swinging of the cushion 102 when it is inflated and deployed, stabilizes the deployment behavior, and additionally gives the cushion 102 tension in the vehicle longitudinal direction. have.

  The inflator 106 is attached to an inflator attachment portion 130 near the upper center of the cushion 102. The inflator attachment portion 130 protrudes from the upper edge of the cushion 102, and is configured to be inserted and attached to the inflator 106 from the vehicle rear side.

  FIG. 2 is a diagram illustrating a configuration in the vicinity of the inflator attachment portion 130 in FIG. In FIG. 2A, the inside of the inflator attachment portion 130 is shown in the drawing. As illustrated in FIG. 2A, a gas guide 132 is provided inside the inflator attachment portion 130. The gas guide 132 is a member that guides the gas ejected from the inflator 106 to the duct 134 that extends in the longitudinal direction of the vehicle. The gas guide inflator 106 is inserted into the guide 130, and a band 136 is wound around and attached from the outside of the inflator attachment portion 130. In the curtain airbag 100, the gas is efficiently distributed in the vehicle front-rear direction in the cushion 102 by flowing the gas through the gas guide 132 and the duct 134.

  In the present embodiment, gas leakage in the gas guide 132 is prevented and durability is improved, thereby achieving efficient and smooth expansion and deployment of the cushion 102. Hereinafter, the configuration of the gas guide 132 will be described in detail.

  FIG. 2B is a perspective view of the gas guide 132 of FIG. The gas guide 132 is formed in a tubular shape by sewing a base fabric. The gas guide 132 is roughly divided into a first gas introduction path 138 in which the inflator 106 is installed, a second gas introduction path 140 that guides gas from the first gas introduction path 138 to the vehicle lower side, and a second gas introduction path 140. The third gas introduction path 142 for guiding the gas from the vehicle in the longitudinal direction of the vehicle is included.

  First, the inflator 106 is inserted into the first gas introduction path 138 through the first opening 144. The inflator 106 is provided with a gas ejection hole 146 on the front end side and a connector 148 (see FIG. 2A) on the rear end. The inflator 106 is inserted into the first opening 144 from the distal end side along the longitudinal direction of the cushion 102 and is installed in the first gas introduction path 138 with the connector 148 exposed to the outside. Is done.

  The first gas introduction path 138 extends along the longitudinal direction of the cushion 102 continuously from the first opening 144 toward the front of the vehicle. A cable 150 extending from the vehicle side is connected to the connector 148 in FIG. Note that the gas guide 132 may be configured such that the first opening 144 is provided in the front of the vehicle and the first gas introduction path 138 extends to the rear of the vehicle.

  The second gas introduction path 140 in FIG. 2B is provided continuously from the first gas introduction path 138 in the vehicle lower side direction of the first gas introduction path 138, and guides the gas downward in the vehicle. An inclined surface 152 is provided in a region where the gas from the inflator 106 directly hits from the end of the first gas introduction path 138 to the second gas introduction path 140. The second gas introduction path 140 is inclined downward in the vehicle on the extension of the first gas introduction path 138 in order to guide the gas downward in the vehicle. The inclined surface 152 is a portion that directly receives gas, and is realized as a non-joint portion without a joint of the base fabric in order to prevent gas leakage and improve durability.

  The third gas introduction path 142 extends in the vehicle front-rear direction continuously from the second gas introduction path 140 in the vehicle lower direction of the second gas introduction path 140. A second opening 154 is provided at one end of the third gas introduction path 142 at the front of the vehicle, and a third opening 156 is provided at the other end of the rear of the vehicle. ))) Gas is supplied to the vehicle front side and the vehicle rear side.

  The gas guide 132 is devised so that it can be formed from a single base fabric. FIG. 3 is a plan view illustrating the gas guide 132 of FIG. FIG. 3A is a developed view in which the base fabric of the gas guide 132 is expanded, and FIG. 3B is a diagram illustrating the gas guide 132 after completion of sewing the base fabric of FIG.

  As illustrated in FIG. 3A, the base fabric of the gas guide 132 is roughly composed of a rectangular first region 158 and a V-shaped second region 160. First, the first region 158 is a region (see FIG. 3B) that constitutes a vehicle rear side portion of the gas guide 132, and is generally rectangular. The first region 158 is connected to the second region 160 at a long side 166 which is one side on the front side of the vehicle, and two cutout portions 162 which are notched in a U shape are provided on the long side on the rear side of the vehicle. The notch 162 serves as a partition 164 that partitions the first gas introduction path 138 and the third gas introduction path 142 in the gas guide 132 after completion of FIG.

  The second region 160 is a region (see FIG. 3B) that constitutes the vehicle front side of the gas guide 132, and has a shape branched in a V shape from the center of the long side 166 of the first region 158. The V-shaped crotch portion (region 167) of the second region 160 is a portion that becomes the second opening 154 (see FIG. 3B). The second region 160 is inclined as shown in FIG. 3B by sewing both outer edges (outer edge 168, outer edge 170) of the V shape along the long side 166 of the first region 158. A surface 152 is formed.

  In forming the gas guide 132 of FIG. 3B from the base fabric of FIG. 3A, first, a central folding line 172 is formed on the base fabric of FIG. The center fold line 172 is a fold formed by folding the center of each region from the first region 158 to the second region 160, and is a portion that becomes the upper edge of the gas guide 132 in the gas guide 132 after completion of FIG. It is.

  After forming the central folding line 172, the outer edges 168 and 170 of the second region 160 are sewn along the long side 166 of the first region 158, thereby forming the side joint line L1 of FIG. . In addition, this side part joining line L1 is realizable by means, such as adhesion | attachment and heat welding, besides sewing.

  The side joint line L1 is provided with measures against gas leakage and the like. 4 is a cross-sectional view of the gas guide 132 of FIG. 3B, and FIG. 4A is a cross-sectional view taken along line AA of FIG. 3B. As illustrated in FIG. 4, in the side joint line L <b> 1, the outer edge 168 of the second region 160 and the long side 166 of the first region 158 are overlapped and sewn so as to be inside and outside of the gas guide 132. Has been. According to this configuration, since it is difficult for gas to hit the gap between the outer edge 168 and the long side 166 that are the ends of the base fabric, it is possible to prevent gas leakage of the gas guide 132 and improve durability against gas pressure. it can.

  Further, when the side joining line L1 is provided, the outer edge 168 is brought closer to the long side 166 so as to close the triangular slit between the second region 160 and the first region 158 in FIG. The second region 160 is inclined in the longitudinal direction of the central folding line 172, and an inclined surface 152 is formed. In this way, the inclined surface 152 is formed without providing a seam of the base fabric.

  After the side joining line L1 is formed, the lower joining line L2 is formed below the third gas introduction path 142. The lower joining line L2 has ends (ends 174 and 176) continuous from the first region 158 to the second region 160 after the side joining line L1 is sewn along the lower part of the third gas introduction path 142. It is something that was sewed over. This lower joining line L2 can also be realized by means other than sewing, such as adhesion and heat welding.

  Countermeasures against gas leakage and the like are also taken for the lower joining line L2. FIG. 4B is a BB cross-sectional view of FIG. As illustrated in FIG. 4B, in the lower joint line L <b> 2, one end 174 and the other end 176 of the base fabric are overlapped and sewn so as to be inside and outside the third gas introduction path 142. ing.

  Since the lower joint line L2 of the third gas introduction path 142 is easy to directly hit the gas from the upper second gas introduction path 140, one end 174 and the other end 176 of the base fabric are taken as countermeasures against this gas. Are overlapped and sewn so as to be inside and outside the third gas introduction path 142, that is, vertically. For this reason, it is difficult for the gas from the second gas introduction path 140 to hit the gap between the ends 174 and 176 of the lower joint line L2.

  And the partition part 164 is provided by overlapping and sewing the notch part 162 of the 1st area | region 158. FIG. The partition part 164 is an area where the base fabric is joined and does not contain gas. The partition part 164 sews around the notch parts 162 of the first region 158 folded and overlapped with the center fold line 172, thereby sewing the center fold line 172. It is provided so as to extend in parallel with. By the partition part 164, the first gas introduction path 138 and the third gas introduction path 142 are formed to be partitioned from each other with a simple configuration. In addition, in order to provide the partition part 164, it is not necessarily required to provide the notch part 162, and it can be realized only by joining the base fabric by sewing. Also, when the notch 162 is provided, not only the partition part 164 is formed by sewing after the notch part 162 is provided, but also the partition part 164 is provided by sewing first and then the base fabric is cut to form the notch part 162. It is also possible to provide it.

  In the gas guide 132 completed by the flow described above, first, the inclined surface 152 is formed without providing the seam of the base fabric, and when the gas is guided downward from the first gas introduction path 138. Gas leakage is prevented. In addition, the base fabric is sewed on the inside and the outside of the gas guide 132 so that the gas does not hit the joints of the base fabric of the side joint line L1 and the lower joint line L2. For example, FIG. 4 (c) shows a gas guide 10 of a comparative example with respect to FIGS. 4 (a) and 4 (b), and the end 12 and the end 14 of the base fabric are overlapped so that their inner surfaces come into contact with each other and sewn. doing. In this case, gas hits the joint between the end 12 and the end 14 of the base fabric, and a load is applied in the direction of opening the joint depending on the degree of gas pressure. In contrast, if the side joint line L1 (see FIG. 4A) and the lower joint line L2 (see FIG. 4B) of the curtain airbag 100, gas hits the joint of the base fabric. It is difficult to exhibit sufficient durability against gas pressure and the like. In this manner, in this embodiment, the gas guide 132 is prevented from leaking gas and is improved in durability against gas pressure, and the curtain airbag 100 can be efficiently inflated and deployed.

  FIG. 5 is a diagram of a modification of the gas guide 132 illustrated corresponding to FIG. The gas guide 200 is different from the gas guide 132 of FIG. 3 in that a reinforcing cloth 202 is provided. As illustrated in FIG. 5A, the reinforcing cloth 202 is provided on the inner side from the first region 158 to the second region 160, and is sewn thereto. As illustrated in FIG. 5B, the reinforcing cloth 202 is arranged on the inner side from the first gas introduction path 138 to the second gas introduction path 140. This position is disposed in the vicinity of the gas ejection hole 146 (see FIG. 2B) of the inflator 106 and directly receiving the gas. FIG.5 (c) is CC sectional drawing of FIG.5 (b). As illustrated in FIG. 5C, by providing the reinforcing cloth 202, the side joining line L1 does not hit the gas. As described above, in the gas guide 200, by providing the reinforcing cloth 202, durability against high-temperature and high-pressure gas is further efficiently improved.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the embodiments described above are preferred examples of the present invention, and other embodiments can be implemented or performed in various ways. Can be carried out. The invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise specified in the present specification. In addition, expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless otherwise specified.

  Therefore, it is obvious for those skilled in the art that various changes and modifications can be conceived within the scope of the claims, and these naturally belong to the technical scope of the present invention. It is understood.

  Moreover, in the said embodiment, the example which applied the airbag apparatus concerning this invention to the curtain airbag with which a motor vehicle is provided was demonstrated. However, other types of airbags other than curtain airbags, such as side airbags and pedestrian protection airbags, can also be realized. Moreover, these airbag apparatuses can also be applied to aircrafts, ships, etc. other than automobiles, and the same effects can be obtained.

  INDUSTRIAL APPLICABILITY The present invention can be used for a gas guide that guides gas from an inflator into a cushion of a vehicle airbag and an airbag device including the gas guide.

L1 ... side joint line, L2 ... lower joint line, 100 ... curtain airbag, 102 ... cushion, 104 ... roof side rail, 105 ... front pillar, 106 ... inflator, 108 ... vehicle, 110 ... side window, 112 ... front Front seat, 114, 116 ... Front seat side chamber, 118 ... Rear seat, 120, 121 ... Rear seat side chamber, 122 ... Cushion upper edge, 124 ... Tab, 126 ... Strap, 130 ... Inflator mounting , 132 ... Gas guide, 134 ... Duct, 136 ... Band, 138 ... First gas introduction path, 140 ... Second gas introduction path, 142 ... Third gas introduction path, 144 ... First opening, 146 ... Gas ejection Hole, 148 ... connector, 150 ... cable, 152 ... inclined surface, 154 ... second opening, 156 ... third opening, 58 ... 1st area | region of a base fabric, 160 ... 2nd area | region of a base fabric, 162 ... Notch part, 164 ... Partition part, 166 ... Long side of 1st area | region, 167 ... Area | region used as a 2nd opening part, 168, 170 ... outer edge of first region, 172 ... central folding line, 174, 176 ... end of base fabric continuous to first and second regions, 176 ... end, 200 ... gas guide, 202 ... reinforcing cloth, 10 ... gas guide of modified example , 12, 14... Edge of the gas guide base fabric of the modified example

Claims (7)

A gas guide that is formed into a hollow shape by joining base fabrics and guides gas ejected from a cylindrical inflator into a cushion of a vehicle airbag,
A first opening into which the inflator is inserted along the longitudinal direction of the cushion;
A first gas introduction path extending along the longitudinal direction of the cushion continuously from the first opening to the front or rear of the vehicle;
A second gas introduction path that is provided continuously from the first gas introduction path in the vehicle lower direction of the first gas introduction path and guides the gas downward in the vehicle;
An inclined surface formed by a non-joint portion that is provided from an end of the first gas introduction path to the second gas introduction path so as to receive the gas from the inflator and is inclined downward in the vehicle;
A third gas introduction path extending in the vehicle longitudinal direction continuously from the second gas introduction path in the vehicle lower direction of the second gas introduction path;
A second opening provided at one end of the third gas introduction path in front of the vehicle to supply gas into the cushion;
A third opening provided at the other rear end of the third gas introduction path for supplying gas into the cushion;
A lower joining line joining the ends of the base fabric along the lower part of the third gas introduction path;
Equipped with a,
The base fabric is
A rectangular first region;
A second region that branches in a V shape from the center of one side of the first region,
The gas guide further includes
A center fold line formed by folding the center of each other from the first region to the second region;
Both V-shaped outer edges of the second region are aligned with the one side of the first region, respectively, so that the outer edge of the second region and one side of the first region are inside and outside of the gas guide. Side joint lines formed by overlapping and joining,
With
The inclined surface of the second gas introduction path is formed as a surface along a central folding line on the second region,
The lower joint line, said side joining lines from the first region after the bonding of the vehicle airbag, characterized in Rukoto formed by joining overlapping edges together successive to the second region gas guide.   2. The lower joint line according to claim 1, wherein one end and the other end of the base fabric are overlapped and joined to each other so as to be inside and outside the third gas introduction path. Gas guide for vehicle airbags. The first gas introduction path and the third gas introduction path are joined in parallel to the central folding line between the first folding line and the lower joining line between the first regions overlapped by being folded at the central folding line. The vehicle air bag gas guide according to claim 1 , wherein the gas guide is partitioned from each other. The gas guide is further claimed in any one of claims 1 3, characterized in that it comprises a reinforcing cloth for receiving gas directly from the first gas introducing passage the inflator spans the second gas inlet passage from Gas guide. The gas guide for a vehicle airbag according to any one of claims 1 to 4 , wherein the lower joint line is formed by sewing. The gas guide for a vehicle airbag according to any one of claims 1 to 5 , wherein the side joint line is formed by sewing. Cushion mounted on the upper part of the side wall of the passenger compartment, which is configured in a bag shape and becomes a slender storage form by being wound or folded,
An inflator that is cylindrical and arranged in parallel to the longitudinal direction of the cushion, and has a gas ejection hole through which gas supplied to the cushion is ejected on the tip side;
A gas guide according to any one of claims 1 to 6 ,
An air bag device comprising:

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