JP4406281B2 - Inflator gas introduction distribution hose - Google Patents

Description

  The present invention relates to a side collision airbag device component that protects an occupant during a side collision of a vehicle, and more particularly to an inflator gas introduction and distribution hose that is optimal for introducing inflator gas into the airbag. .

  An air bag device that inflates an air bag and protects an occupant at the time of a vehicle collision is mounted on a driver seat and a passenger seat. Such an airbag apparatus includes an inflator that is a gas generator, an airbag that is inflated with an inflator gas, an inflator gas introduction / distribution hose that introduces gas from the inflator into the airbag, and an airbag case that houses these.

  In recent years, in addition to the frontal collision of the driver's seat and passenger's seat, the demand for side collision airbag devices called curtain airbags has been increasing mainly for the purpose of protecting the head, in order to mitigate the impact during a side collision. Yes. Such side collision airbags are folded and stored in center pillars and front pillars, and at the time of a collision, the inflator gas is introduced into the airbag to expand between the door portion and the occupant, It reduces the impact from the side.

  This side impact airbag needs to be deployed instantly in the event of a vehicle collision, and the time until deployment is required to be shorter than the airbag for the driver seat or passenger seat, so inflator gas is particularly introduced. In the vicinity of the distribution hole of the hose, the gas pressure tends to be very high, the distribution hole part bursts due to the pressure of the inflator gas, the shape thereof is deformed, and the expansion form at the time of airbag deployment becomes uneven, There is a problem that fibers near the gas inlet are cut and scattered and melted in the airbag, or the airbag itself is damaged.

  As a measure for improving the problem caused by such a partial pressure increase, there is a method of using a high-strength fiber such as a large-diameter fiber or an aramid fiber to increase the strength of the airbag or the inflator gas distribution hose as a whole. However, the use of thick fibers is not preferable because the airbag itself is bulky and the interior design of the automobile is restricted due to the need to secure storage space. In addition, since high strength fibers are expensive, using them causes a problem of cost increase.

Until now, focusing on the distribution of inflator gas, the airbag device having a diffuser part with a plurality of holes for quickly dispersing and releasing the gas from the inflator into the airbag body (Patent Document 1), the end of deployment In order to control the form of inflation of the airbag up to the time, an airbag apparatus (Patent Document 2) in which the shape of the gas outlet provided in the diffuser portion is optimized has been proposed. However, these proposals only control the gas flow from the inflator and do not specifically consider the characteristics required for the gas distribution holes of the inflator gas introduction / distribution hose. The problem that occurred near the inflator gas inlet when the bag was deployed could not be solved.
Japanese Patent Laid-Open No. 10-100900, claims, etc. JP 2001-270415 A, claims, etc.

  The present invention has been made paying attention to the above-described circumstances, and more specifically, it suppresses defects during airbag deployment, in particular, damage around the gas distribution holes of the inflator gas introduction / distribution hose, and improves deployment reliability. An object of the present invention is to provide an inflator gas introduction / distribution hose for a high-side impact airbag.

  The inflator gas introduction / distribution hose of the present invention is a fabric hose that is disposed in a side collision airbag device and has one or more distribution holes for distributing gas from the inflator to the inside of the airbag when the airbag is activated. The hose is coated with rubber or synthetic resin on at least one of the outer surface and the inner surface, and the distribution hole is an end, and the width of the sample in the warp and weft directions of the fabric constituting the hose With respect to a sample having a width of 3 cm and a length of 5 cm cut out so that the directions are orthogonal to each other, the maximum pulling resistance value measured by the pin hook method defined in JIS L1096 8.21.3 is All have a gist at 70 N / 3 cm or more.

  The maximum drawing resistance value is preferably 100 N / 3 cm or more in both warp and weft directions, and the amount of rubber or synthetic resin applied to the hose is 10 to 80% of the hose mass before application. It is desirable that

  In addition, it is preferable to form a reinforced portion at the inner peripheral edge of the distribution hole of the hose because damage to the peripheral edge of the distribution hole due to high pressure can be more effectively reduced. It may be formed by coating, and is preferably formed at the same time when the distribution holes are formed by laser cutting, because the manufacturing process of the hose can be simplified.

  Further, the hose distribution hole peripheral portion is formed by bringing the heating body into direct contact with the distribution hole peripheral portion, which is a preferred embodiment of the present invention.

  In the inflator gas introduction hose of the present invention, the strength at the periphery of the introduction port is sufficiently increased, so that damage around the gas distribution hole during deployment of the airbag can be effectively suppressed, and reliability is improved. . In addition, since the inflator gas introduction hose of the present invention is made of woven fabric, it is compact and lightweight, has excellent storage properties, and is advantageous in terms of cost.

  In order to distribute the gas from the inflator to the inside of the airbag when the airbag is activated, the present inventors distribute the gas from the inflator around the gas distribution hole in the inflator gas distribution introduction hose when the airbag is deployed. Focusing on the problems caused by the partial high pressure acting around the gas distribution holes, and as a result of intensive studies, it has been found that the above problems can be solved by increasing the base fabric strength around the gas distribution holes. Completed the invention.

  Therefore, the airbag device for side collision to which the present invention is applied includes an inflator that is a gas generator, an airbag that is inflated by an inflator gas, and an inflator gas distribution hose (hereinafter referred to as an inflator gas distribution hose that introduces gas generated by the inflator into the airbag). Simply called “hose”).

  The present invention relates to the inflator gas introduction / distribution hose. Since the distribution hose is mounted on a vehicle, a woven fabric is preferable from the viewpoint of weight reduction and storage. Although the fiber which comprises this textile fabric is not specifically limited, For example, a polyamide fiber, a polyester fiber, etc. can be used. The strength of the yarn composed of these fibers is preferably 5 cN / dtex or more, more preferably 6 cN / dtex or more, and even more preferably 7 cN / dtex or more in terms of the unwinding yarn strength. The unstripped yarn strength means the strength of the raw yarn measured after loosening the warp and weft constituting the hose and removing the rubber and resin adhering to the raw yarn.

  The fineness of the yarn constituting the distribution hose is preferably 110 dtex or more and 7000 dtex or less, and these yarns may be twisted yarn or processed yarn. More preferably, the warp is 500 dtex or more and 3000 dtex or less, and the weft is 1500 dtex or more and 5000 dtex or less. If the fineness is less than 110 dtex, in addition to insufficient strength in the hose warp direction, a large amount of warp is required to increase the woven density of the resulting fabric, and preparation takes time, which is economically undesirable. . When the weft is less than 110 dtex, a large number of wefts must be driven in order to increase the weave density in the weft direction. On the other hand, if it exceeds 7000 dtex, the hose itself is bulky and the storage property is deteriorated.

  As the weaving machine used for weaving the distribution hose according to the present invention, it is possible to use any ring loom in which a fire hose or the like is woven, shuttle loom, needle loom that weaves a seat belt or the like, and the loom is particularly limited. Not.

The woven structure is not particularly limited, but plain weave and twill are preferable from the viewpoint of excellent strength and low porosity between the woven structures. The woven fabric obtained at this time is generally used as an index of woven density, and the cover factor (CF) obtained from the following formula is preferably 1500 or more in the warp direction and 500 or more in the weft direction.
Cover factor (CF) = fineness [dtex] ^1/2 × weave density [lines / 2.54 cm].

  The diameter of the hose woven using the above-mentioned fibers is preferably 2 cm or more and 6 cm or less. If the diameter of the hose is less than 2 cm, the pressure loss in the hose increases, and partial breakage tends to occur. On the other hand, if the diameter of the hose exceeds 6 cm, it is difficult to store the hose in the airbag device, which is not preferable. More preferably, it is 3 cm or more and 5 cm or less.

  The inflator gas introduction / distribution hose according to the present invention has one or more distribution holes for introducing / dispersing the gas from the inflator into the airbag, and the greatest point of the present invention is the distribution hole of the hose. The peripheral maximum resistance value is increased to 70 N / 3 cm or more.

  Here, the maximum drawing resistance value is a value indicating the strength of the fabric determined by the fabric testing method specified in JIS L1096 8.21.3. Specifically, a sample having a width of 3 cm and a length of 5 cm is cut out so that the sample width direction is perpendicular to each of the warp and weft directions of the fabric constituting the hose with the gas distribution hole portion as an end, and the weft and Then, a pin is inserted into a position 3 mm from the end (gas distribution hole) of the obtained sample, the sample is attached to a fabric tensile tester, and then pulled at a pulling speed of 15 cm / min. This is the value obtained when

  Even when the sides constituting the gas distribution hole are not perpendicular to the warp and the weft, or when the side is circular, the gas distribution hole portion is also used as the end of the sample, and the distribution hole portion protrudes most. Cut the sample with the above size so that the warp direction or weft direction of the sample is orthogonal to the warp and weft directions of the hose base fabric with reference to the part, and insert a pin at a position 3 mm from the distribution hole part to perform a tensile test. Just do it. In addition, when one side of the gas distribution hole is smaller than 3 cm, a sample is prepared by the above method based on the actual distribution hole size and measured in the same manner, and then the obtained numerical value is converted to 3 cm. Good.

  When the maximum pull-out resistance value measured as described above is less than 70 N / 3 cm, the high-pressure gas ejected from the inflator is sent to the inflating portion of the airbag and instantaneously passes through the distributing hole portion. A part of the warp and / or the weft part is frayed and the shape of the distribution hole is deformed, and the gas distribution hole becomes larger than the design size. When the gas distribution hole is deformed and enlarged in this way, the amount of gas flowing out from the portion becomes larger than the design value, and the airbag does not have a uniform inflation form, particularly in the case of an airbag having a plurality of inflation portions. In some cases, excessive gas may be introduced into the airbag inflating part of the specific part to cause rupture, and the impact relaxation function at the time of collision may be significantly impaired. In addition, if the end of the distribution hole frays and scatters in the airbag, the airbag may melt, causing the airbag to burst. More preferably, it is 100 N / 3 cm or more, and still more preferably 160 N / 3 cm or more.

  In the present invention, at least one side of the base fabric constituting the hose is made of rubber or synthetic resin (hereinafter referred to as a coating agent) in order to increase the maximum resistance value at the periphery of the inflator gas distribution hole and ensure 70 N / 3 cm or more. It is necessary to coat with. When the coating agent is not coated, gas from the inflator leaks from the surface of the hose body other than the gas distribution holes when the airbag actually operates, and the gas distribution rate to each inflated portion of the airbag is not stable. . In addition, if there is a portion where the gas easily escapes from the hose base fabric, the flow of high-pressure gas may concentrate on the portion, leading to breakage.

  Examples of rubber that can be used for the coating agent include neoprene rubber, ethylene propylene diene rubber, and silicone rubber. Among these, silicone rubber is preferable from the viewpoint of excellent heat resistance, and more preferable specific examples include thermosetting addition-polymerized silicone rubber and two-component RTV silicone. In addition, it is also effective to add an amino silane coupling agent, an epoxy-modified silane coupling agent, a vinyl silane coupling agent, a chloro silane coupling agent, etc. to the silicone rubber in order to improve the adhesiveness. It is.

  Specific examples of the synthetic resin that can be used as the coating agent include polyester resins, polyamide resins, polyester elastomers, polyamide elastomers, polyurethane elastomers, and the like.

  The method of applying the coating agent to the hose is not limited, and any application method such as a method of immersing a woven hose directly in the coating agent or a method of applying the surface of the hose with a brush or the like can be adopted.

  The coating amount of the coating agent is preferably 10% or more and 80% or less with respect to the mass of the hose. When the coating amount is less than 10%, it is insufficient to fill the gap between the yarns constituting the woven fabric structure with the coating agent, and inflator gas leaks partially, and the gas distribution rate is the initial value. It may not be as designed. On the other hand, if it exceeds 80%, the mass of the entire hose increases and becomes bulky. More preferably, it is 25% or more and 60% or less.

  As a method for measuring the coating amount of the coating agent, in addition to the method of measuring the mass difference of the hose before and after coating the coating agent, a rubber or synthetic material is used from the coating agent-coated hose using a solvent that dissolves only the coating agent. Method of measuring the mass of the constituent fiber after dissolving and removing only the resin, or method of measuring the mass of the rubber or synthetic resin by removing the fiber from the coating agent-coated hose using a solvent that dissolves only the hose constituent fiber There is.

As described above, an inflator gas distribution hole serving as an inflator gas inlet is formed in the hose coated with the coating agent. The number of distribution holes is not limited, and may be determined as appropriate in consideration of the size of the airbag, the form of inflation, and the like. The size of the distribution hole, 0.25 cm ² or more, preferably 16cm ² or less, more preferably 1 cm ² or more and 9cm ² or less. When the size of the distribution hole exceeds 16 cm ² , the flow rate of the inflator gas from the distribution hole portion increases, the region is heated locally, the destruction proceeds from the portion, and the inflation form of the airbag becomes non-uniform, There is a risk of damaging the airbag body. On the other hand, if it is less than 0.25 cm ² , a large number of distribution holes must be formed in order to instantly deploy the airbag, which is not preferable because of the labor and cost of processing. The shape of the distribution hole is not particularly limited, but it is preferably a square, a rectangle, or a circle in consideration of prevention of fraying of the yarn from the cutting portion and ease of processing.

  In addition, the gas distribution holes are optimized in the number and position of the gas distribution holes, and the sizes of the gas distribution holes are close to and apart from the inflator so that the airbag body can be inflated uniformly. Is suitably adjusted. This is because the inflation form of the airbag during deployment can be controlled by doing so.

  As described above, the extraction maximum resistance value of the distribution hole portion of the inflator gas introduction hose obtained is set to 70 N / 3 cm or more.

  In carrying out the present invention, it is preferable to provide a reinforcing portion around the gas distribution hole in order to further increase the strength of the periphery of the inflator gas distribution hole formed as described above. The reinforcing part is (1) a method of melting and welding the fibers around the distribution hole at the same time when providing the distribution hole by laser cutting, and (2) a peripheral part by directly contacting the heating body with the gas distribution hole cross section formed in advance. These fibers can be formed by a method of melting and welding the fibers by heat, and (3) a method of bonding the fibers of the part using an adhesive.

  In the case where the reinforced portion is formed using an adhesive, in addition to the method of directly applying the adhesive to the punched cross section of the gas distribution hole, it is within 1 cm from the gas distribution hole punching line on the outer surface and / or inner surface of the hose. An adhesive may be attached to the part and solidified. By doing in this way, the intensity | strength of a reinforcement part can be raised further. The adhesive used at this time is not particularly limited, but it is preferably an adhesive that completes solidification in a short time, such as an instantaneous adhesive. Specifically, the adhesive can be developed in a short time, and the heat resistance is also improved. An excellent cyanoacrylate adhesive (for example, 3000DX series manufactured by Cemedine Co., Ltd.) and the like can be mentioned.

  In order to further improve the strength of the strengthened portion provided as described above, it is also effective to advance the welding by bringing the heating body into contact with the end face of the gas distribution hole and pushing it in by about 1 mm. As a heating body at this time, a thermal iron, a heating block body, etc. can be used.

  In general, an air bag is inflated by gas from an inflator and restrains and protects an occupant at the time of a vehicle collision. Therefore, it is sufficient for sudden inflation caused by introduction of an inflator gas and an impact on the occupant at the time of a vehicle collision. It must have sufficient strength and a small impact on the passenger. From such a viewpoint, the airbag body is preferably a woven fabric using, for example, polyamide fibers or polyester fibers. Also, as with the inflator gas introduction / distribution hose, the surface may be coated with rubber or synthetic resin for the purpose of preventing gas leakage from the airbag and improving various properties such as strength. What was raised for the above-mentioned hose can be used similarly.

  The fiber constituting the airbag body preferably has a fineness of 200 dtex or more and 600 dtex or less. If the fineness exceeds 600 dtex, the woven airbag becomes bulky, resulting in poor storage properties. On the other hand, if it is less than 200 dtex, sufficient base fabric strength is difficult to obtain, and a large number of gas distribution holes are provided to distribute the inflator gas. Even if it is controlled, there is a possibility that the vicinity of the gas distribution hole may burst, which is not preferable. More preferably, it is 300 dtex or more and 500 dtex or less.

  The single filament diameter of the multifilament constituting the side impact airbag main body is preferably 2 dtex or more and 10 dtex or less, more preferably 3 dtex or more and 6 dtex or less. This is because if the single yarn diameter exceeds 10 dtex, the rigidity of the base fabric becomes too high and the storage performance is lowered, and the impact on the occupant when the airbag is inflated also increases. On the other hand, a single yarn diameter of less than 2 dtex is not preferable because single yarn breakage or the like is likely to occur during weaving.

  The manufacturing method of the said airbag main body is not limited, It can manufacture by a well-known weaving method.

  The inflator gas introduction / distribution hose obtained as described above is installed in the airbag body and then attached to the inflator. The airbag body and the inflator gas introduction / distribution hose may be integrated with the airbag body at the edge of the hose by means such as sewing or bonding, but the hose is particularly integrated because it is fixed to the inflator. You don't have to.

  The side collision airbag obtained in this way is folded and accommodated in the center pillar, front pillar, etc. of the vehicle.

  The inflator introduction / distribution hose obtained by the present invention is not limited to being installed in a side impact airbag of a vehicle, but is an airbag device for a driver seat or a passenger seat, and a knee air installed in a driver seat or a passenger seat. It can be used for various airbag devices such as a bag device.

  Hereinafter, the present invention will be described in more detail by way of experimental examples. However, the following experimental examples are not of a nature that limits the present invention, and any design changes in accordance with the gist of the preceding and following descriptions are technical aspects of the present invention. It is included in the range. The evaluation method is as follows.

Nitrogen gas pressurized to an initial pressure of 800 kPa and a volume of 5 liters is introduced from the open end of the distribution hose for inflator gas introduction obtained in the gas distribution hole fraying test experimental example after introduction of pressurized gas into the hose , The state of the subsequent distribution holes was observed. In the evaluation, the fraying condition of the peripheral edge of the distribution hole closest to the nitrogen gas inlet is evaluated in five stages, A: almost no deformation of the shape is observed, B: only a slight deformation of the shape is recognized, C: the shape The evaluation was C or higher, assuming that a slight deformation was observed, D: considerable deformation of the shape was observed, and E: significant deformation of the shape was recognized.

Measurement of maximum drawing resistance value It was performed according to JIS L1096 8.21.3 (pin hook method). Using the gas distribution hole as an end, a sample having a width of 3 cm and a length of 5 cm was cut out so that the width direction of the sample was perpendicular to the warp and weft directions of the woven fabric constituting the hose to prepare wefts and warp samples. That is, a case where a warp is pulled out is a warp sample, and a case where a weft is pulled out is a weft sample. The pin was inserted into a position 3 mm from the end of the obtained sample (the inner periphery of the gas distribution hole), and the sample was attached to the fabric tensile tester so that the distance between the head and the pin was 5 cm, and then pulled. The sample was pulled at a speed of 15 cm / min, and the maximum resistance value for drawing was measured.

Experimental example 1
Using polyamide 66 fiber with a strength of 8.0 cN / dtex, warp is 470 dtex / 72f, 5 strands, and weft is 470 dtex / 72f hose using 5 strands so that it looks like 10 strands (5 strands) A jacket (pre-coated tubular woven fabric) was woven with a twine width of 4 mm and woven so as to have a total width of 7.5 cm (tube diameter: 4.5 cm) with a needle loom. The weave density of the tubular woven fabric obtained at this time was warp direction (2350 dtex): 74 pieces / 2.54 cm, and weft direction (4700 dtex): 10.5 pieces / 2.54 cm.

  The obtained tube is folded into a flat shape, taken out after being immersed in a coating agent (silicone resin: ELASTOSIL M-4640 manufactured by WACKER) containing an additive (manufactured by Adhesion Promoter HF86 WACKER), and the coating amount becomes uniform. Thus, the excess coating agent was removed by squeezing with a squeezing plate to give a uniform double-sided coating and cured at 170 ° C. for 2 minutes. The coating amount applied at this time was 45 g / m.

  Next, after cutting so that the length of the hose is 2 m, one end of the hose is sewn at a 2.5 mm pitch (sewing in 3 rows) using resin-processed nylon 66 thread (1400 dtex). Then, five square gas distribution holes each having a side of 3 cm were punched out every 30 cm from the hose opening end on the side having no entanglement portion. An inflator having a reinforced portion at the periphery of the gas distribution hole by bringing a thermal iron into direct contact with the diameter yarn and the weft cross section of the punched portion and heating and melting and welding the fibers at the periphery of the distribution hole at 500 ° C. for 8 seconds. An introductory distribution hose was obtained. At this time, each side of the distribution hole was formed to be orthogonal to the warp and weft of the hose base fabric. Using the obtained hose, a gas distribution hole fraying test after introduction of pressurized gas and a measurement of the maximum resistance value for drawing were performed. The results are shown in Table 1.

Experimental example 2
Use polyamide 66 fiber with a strength of 8.0 cN / dtex, use warp for 350 dtex / 108f 2-twist, and weft for apparently 6-twist with 350 dtex / 108 f hose (3 twist) 2) and a needle loom, weaving the jacket (pre-coated tubular woven fabric) with a twine width of 2 mm and weaving so that the total width is 7.3 cm (hose diameter 4.5 cm). The weave density of the obtained woven fabric was warp direction (700 dtex): 90 pieces / 2.54 cm, and weft direction (2100 dtex): 16.5 pieces / 2.54 cm.

  After the coating agent was applied to the obtained tubular woven fabric in the same manner as in Experimental Example 1, the hose length was cut to 2 m to form a gas distribution hole to produce an inflator gas introduction distribution hose. did. The coating amount of the coating agent at this time was 30 g / m.

  Using the obtained hose, the gas distribution hole fraying test and the pin hook strength after introduction of pressurized gas were evaluated. The results are shown in Table 1.

Experimental example 3
Use polyester fiber with a strength of 8.0 cN / dtex, use 8 twists so that the warp is 280 dtex / 96f, and the weft is 280 dtex / 96f. 2), a jacket (pre-coated tubular woven fabric) was woven with a twine width of 4 mm using a needle loom, and woven so that the total width was 7.5 cm (hose diameter 4.5 cm). The weave density of the obtained woven fabric was warp direction (2240 dtex): 77 pieces / 2.54 cm, and weft direction (4480 dtex): 11 pieces / 2.54 cm.

  The obtained tube-shaped woven fabric was coated with a coating agent in the same manner as in Experimental Example 1 and cut so that the hose length was 2 m, and then a gas distribution hole was provided to prepare an inflator-introduced distribution hose. The coating amount of the coating agent at this time was 55 g / m. In addition, the reinforcement | strengthening part was not provided in the gas distribution hole periphery of the obtained hose.

  Using the obtained hose, the gas distribution hole fraying test and the pin hook strength after introduction of pressurized gas were evaluated. The results are shown in Table 1.

Experimental Example 4
Use polyamide 66 fiber with a strength of 8.0 cN / dtex, use 5 twists so that the warp yarns appear to be 10 twists with a 470 dtex / 72f hose, and the weft yarns appear to be 10 twists (5 twists). The jacket (pre-coating tubular woven fabric) was woven with a twine width of 4 mm and woven so as to have a total width of 7.5 cm (hose diameter: 4.5 cm). The weave density of the obtained woven fabric was warp direction (2350 dtex): 74 pieces / 2.54 cm, and weft direction (4700 dtex): 10.5 pieces / 2.54 cm.

  In the same manner as in Experimental Example 1, a coating agent was applied to the obtained tubular woven fabric and cut so that the hose length was 2 m, and then a gas distribution hole was provided to prepare an inflator introduction distribution hose. The coating amount of the coating agent at this time was 11 g / m. Similar to Experimental Example 3, no reinforcing portion was provided on the periphery of the gas distribution hole of the obtained hose.

  Using the obtained hose, the gas distribution hole fraying test and the pin hook strength after introduction of pressurized gas were evaluated. The results are shown in Table 1.

  As is clear from Table 1, in the inflator gas distribution hoses of Experimental Examples 1 to 3 that satisfy the prescribed requirements of the present invention, almost no deformation of the distribution holes is observed, and the peripheral edge of the gas distribution holes is defective. There wasn't. In particular, in the hoses of Experimental Examples 1 and 2, the reinforcing portion was formed by melting and welding the fibers at the periphery of the gas distribution hole with a thermal iron, so that the strength was further increased, and the occurrence of defects at the periphery of the gas distribution hole was further increased. It was effectively suppressed. Moreover, although the reinforcement | strengthening part was not formed in the hose of Experimental example 3, since the intensity | strength of the gas distribution hole periphery was fully ensured by application | coating of a coating agent, the deformation | transformation of the distribution hole was hardly seen. .

  On the other hand, in the hose of Experimental Example 4, since the coating amount of the coating agent was insufficient, the peripheral edge of the gas distribution hole portion was insufficient in strength, and the failure of the gas distribution hole portion could not be prevented.

Claims (5)

A textile distribution hose disposed in a side impact airbag device and having one or more distribution holes for distributing gas from an inflator to the interior of the airbag when the airbag is activated, the outer and inner surfaces of the hose Rubber or synthetic resin is applied to at least one of
Having a reinforced portion formed by directly contacting the heating body to the inner periphery of the distribution hole provided after applying rubber or synthetic resin; and
A sample having a width of 3 cm and a length of 5 cm, which is cut in such a manner that the sample width direction is orthogonal to the warp and weft directions of the fabric constituting the hose with the distribution hole as an end, is JIS L1096 8.21. 3. An inflator gas introduction / distribution hose characterized by having a maximum drawing resistance value measured by a pin hooking method defined in No. 3 of 70 N / 3 cm or more in both warp and weft directions.   2. The inflator gas introduction / distribution hose according to claim 1, wherein the maximum drawing resistance value is 100 N / 3 cm or more in both warp and weft directions.   The inflator gas introduction / distribution hose according to claim 1 or 2, wherein the amount of rubber or synthetic resin applied to the hose is 10 to 80% of the mass of the hose before application. Furthermore, inflator gas introduction according to claim 1 and has a reinforcement portion which is coated fabric adhesive to a portion within 1cm from the gas distribution holes punched line of the hose outer surface and / or inner surface Distribution hose. The inflator gas introduction distribution hose according to any one of claims 1 to 4, wherein a cover factor (CF) in a longitudinal direction of a hose of the fabric constituting the hose is 1500 or more and a cover factor (CF) in a weft direction is 500 or more.