JP2006213221A - Airbag device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce manufacturing cost by mounting an airbag on an automobile body by using a mounting bracket in a curtain airbag to cover a window part at a side of an automobile. <P>SOLUTION: An automobile body mounting part and an airbag mounting part 38 are provided on a mounting bracket 20. The airbag mounting part 38 is retracted from an automobile body panel 15 side by the dimension L1 from the automobile body mounting part, and formed adjacent to the automobile body mounting part. The airbag mounting par 38 is mounted on a mounting piece part 22 provided along an upper end of an airbag body part 21. When the deployment force of an airbag 1 is applied, the airbag mounting part 38 is deformed, but fixed to the automobile body panel 15 in an abutted condition. The thickness of the mounting bracket 20 can be reduced, and the manufacturing cost can be reduced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an airbag apparatus including an airbag that is deployed along a side window portion of an automobile, for example.

  2. Description of the Related Art Conventionally, as an airbag apparatus including an airbag that inflates and deploys by introducing gas, a so-called curtain airbag that is deployed along a side window of an automobile or the like is known. In such an airbag, the upper edge portion is connected to the vehicle body panel on the upper edge portion of the vehicle compartment side surface, and is normally folded and stored along the upper edge portion of the vehicle compartment side surface. At the same time, when an impact from the side such as a side collision is received, gas is supplied from the inflator, and expands and develops downward along the window of the side door, the B pillar, and the like.

In addition, as a configuration for attaching the airbag to the vehicle body panel, a mounting bracket made of sheet metal is attached to a mounting piece portion provided at a predetermined interval on the upper edge of the airbag, and the mounting piece portion to which these mounting brackets are attached is made of sheet metal. A structure is known that is fixed together with a shock-absorbing member together with a mounting bolt. That is, in this configuration, the airbag mounting piece and the mounting bracket are fixed to the vehicle body panel by mounting bolts at the same site (see, for example, Patent Document 1).
JP 11-321534 A (page 3-4, FIG. 1-2)

  Here, the position for fixing the airbag and the mounting bracket and the position for mounting the mounting bracket and the vehicle body panel are set to different positions due to the layout of the vehicle body, that is, the airbag is fixed to the mounting bracket. The structure which provides a part and a vehicle body panel fixing | fixed part mutually spaced apart can be considered. However, in this configuration, when the airbag is inflated and deployed, a large force is applied between the fixing portion and the vehicle body panel fixing portion of the airbag of the mounting bracket. It is required to secure the rigidity of the mounting bracket by using a raw material or the like, and there is a problem that the manufacturing cost increases.

  This invention is made in view of such a point, and it aims at providing the airbag apparatus which can reduce a manufacturing cost while being able to hold | maintain an airbag to a to-be-attached part with a mounting bracket.

  The airbag device according to claim 1 is an airbag that is introduced and deployed by gas, a first attachment portion that is attached to an attachment portion of an attachment member, and the airbag that is separated from the first attachment portion. And a mounting bracket whose position is fixed by pressing the second mounting portion toward the mounted member when the airbag is deployed.

  And in this structure, while attaching an airbag to the 2nd attachment part of an attachment bracket, attaching an air bag via this attachment bracket by attaching the 1st attachment part of an attachment bracket to the attachment part of an attachment member. Is attached to the attached member. Since the first mounting portion and the second mounting portion are separated from each other, the degree of freedom of arrangement of the mounted portion of the mounted member and the shape of the airbag is improved, versatility is improved, and manufacturing cost is reduced. . When a force is applied during deployment of the airbag, the mounting bracket is deformed, and the second mounting portion is pressed against the mounted member side to fix the position. Therefore, there is no need to increase the strength of the mounting bracket, and the manufacturing cost Is reduced.

  The airbag device according to claim 2 is the airbag device according to claim 1, wherein the attached member constitutes a vehicle body panel of the vehicle, and the first attachment portion is held in contact with the vehicle body panel, The second mounting portion is normally separated from the vehicle body panel via a space portion, and is attached to the airbag by an airbag mounting tool partially disposed in the space portion.

  And in this structure, since a part of airbag attachment tool is accommodated in a space part, an airbag attachment tool does not interfere with a vehicle body panel, but each member is protected and attachment work becomes easy.

  The airbag device according to claim 3 is the airbag device according to claim 1 or 2, wherein the first attachment portion and the second attachment portion are plate-shaped, and the first attachment portion and the second attachment portion. A plate-like extending portion is provided which is arranged with the direction intersecting the surface direction of the portion as the surface direction, and is formed integrally with the first attachment portion and the second attachment portion.

  In this configuration, since the first mounting portion, the second mounting portion, and the extending portion are plate-shaped and integrated with each other, they can be easily formed using a plate material, and the manufacturing cost can be reduced. Since the extending portion is arranged with the direction intersecting the surface direction of the first attachment portion and the second attachment portion as the surface direction, sufficient strength can be easily obtained, and the manufacturing cost can be reduced.

  According to the airbag device of the present invention, the airbag is attached to the second attachment portion of the attachment bracket, and the attachment bracket is attached to the attachment portion of the attachment member by attaching the first attachment portion of the attachment bracket. The airbag can be attached to the attached member. Since the first attachment portion and the second attachment portion are separated from each other, the degree of freedom of the arrangement of the attached portion of the attached member and the shape of the airbag is improved, the versatility is improved, and the manufacturing cost can be reduced. When a force is applied during deployment of the airbag, the mounting bracket is deformed, and the second mounting portion is pressed against the mounted member side to fix the position. Therefore, there is no need to increase the strength of the mounting bracket, and the manufacturing cost Can be reduced.

  Hereinafter, an embodiment of an airbag device of the present invention will be described with reference to the drawings.

  1 to 4, reference numeral 1 denotes an airbag. An airbag device 2 including the airbag 1 is also called a curtain airbag device. As shown in FIG. 3 on the roof side portion 5 of the third compartment 4. The airbag 1 is also referred to as a curtain airbag, a side impact airbag, an inflatable curtain, or a head protection airbag. As shown, it is developed in a planar shape on the side of the occupant to protect the occupant, which is an object to be protected.

  Further, as shown in FIG. 4, the vehicle body 3 includes a front seat 6 and a rear seat 7 in which a passenger can be seated in a passenger compartment 4, and corresponding to the front seat 6 and the rear seat 7. A door (not shown) having a window portion (side window) constituting a predetermined surface that can be opened is provided. Further, on both sides of the passenger compartment 4, a front pillar 11 also called an A pillar as a pillar, a center pillar 12 also called a B pillar, and a rear pillar 13 also called a C pillar are provided in order from the front side. 1, 2 and 4, a vehicle body panel 15 constituting a member to be attached, which is also called a roof side rail or the like, is provided on the upper side. The ceiling panel 16 is supported via the vehicle body panel 15. Further, pillar garnishes 11a, 12a, and 13a, which are interior materials, are respectively attached to the entire length of each pillar 11, 12, and 13 or on a part of the passenger compartment 4 to cover these pillars 11, 12, and 13. . The airbag device 2 is attached to the compartment 4 side of the portion extending from the front pillar 11 to the vehicle body panel 15, and a soft or deformable ceiling together with a part of the front pillar 11, the vehicle body panel 15 and the ceiling panel 16. It is covered with a head lining (routing) 16a which is a plate and an interior decoration panel. Further, an elastically deformable packing body 17 formed of a soft resin or the like is attached to the lower end portion of the vehicle body panel 15. The packing body 17 is also referred to as a welt or a body seal, and the upper portions of the doors are in contact with and in close contact with each other, and cover the gap between the vehicle body panel 15 and the headlining 16a. Each seat is provided with a seat belt, and the center pillar is provided with a support portion for supporting these seat belts.

  The airbag device 2 is a so-called front and rear seat airbag that can protect passengers in the front and rear seats, and is stored in an elongated state in the roof side portion 5 surrounded by the vehicle body panel 15 and the headlining 16a. An air bag 1, an inflator 18 that is stored above the rear seat and supplies gas to the airbag 1, a sleeve 19 that is a cylindrical covering member that covers the folded airbag 1 and holds the shape, A mounting bracket 20 for attaching the bag 1 to the vehicle body panel 15 is provided.

  The airbag 1 is formed by combining one or a plurality of base fabrics, and has an airbag main body portion 21 formed in a flat bag shape, and attachment portions extending from a plurality of locations of the airbag main body portion 21. And a tether 23 connected to the front side portion of the airbag main body portion 21.

  Although not shown, the airbag main body portion 21 overlaps an outer base fabric portion disposed on the outer side on the vehicle body side and an inner base fabric portion disposed on the vehicle compartment side, and performs predetermined sewing as a joint portion. A bag-like inflatable part that inflates and expands when gas flows in, a gas inlet that is located at the upper rear end of the airbag body 21 and communicates the inflated part to the outside, and inflates without inflowing gas A sheet-like non-inflatable portion that does not expand is provided. Furthermore, the inflating part is an air chamber that is a hollow part, and a communication part that is located at the upper part of the longitudinal central part that is the front-rear direction of the airbag main body part 21, and a first part that communicates with the front side of this communication part. A front seat protection part (front seat protection area) as an inflating part and a rear seat protection part (rear seat protection area) as a second inflating part communicating with the rear side of the communication part are provided. Moreover, the sewing part is provided with the outer periphery sewing part which is an outer periphery connection part which sews the outer periphery of an expansion | swelling part, and the control part which controls the width dimension at the time of expansion | deployment of each protection part. And this restriction | limiting part is located in one place or several places of an expansion | swelling part, and is formed in the outer peripheral sewing part integrally or separately. Further, for example, an annular protection portion is formed at the terminal portion of the restriction portion. Furthermore, between the outer base fabric portion and the inner base fabric portion, as necessary, as a means for guiding the gas, or as a means for regulating the width dimension of the expansion portion during deployment, an inner pipe, a front partition wall body, Alternatively, a rear partition wall or the like is attached by sewing or the like.

  Also, a plurality of attachment pieces 22 are formed at predetermined locations on the upper edge of the airbag main body 21, for example, six attachment pieces 22 project upwardly with respect to the two attachment pieces 22. One mounting bracket 20 can be attached. Each attachment piece 22 is formed integrally with a base fabric constituting the airbag main body 21, and is formed, for example, by overlapping and sewing an outer base fabric portion and an inner base fabric portion. Each attachment piece 22 protrudes from the airbag body 21 in a tongue-like shape, and an attachment hole 22a having a circular hole shape is formed.

  Further, the tether 23 is also called a strap or the like, and is formed in a string shape with a base cloth or the like, and a base end portion is connected to a front side portion of the airbag main body portion 21 by sewing or the like.

  The sleeve 19 is also called a cover or the like. The sleeve 19 is formed into a cylindrical shape by sewing sheets such as cloth together with a stitching line 19a, and a plurality of slits 19b are formed to pull out the attachment piece 22 to the outside.

  The mounting bracket 20 is formed by pressing a metal plate or the like, and is integrally formed of, for example, a general cold-rolled steel plate (SPCC t = 1.2 mm) having a thickness of 1.2 mm. As shown in FIGS. 1 to 3 and 5, the mounting bracket 20 includes an elongated substrate portion 31 that constitutes an extending portion. And this board | substrate part 31 is what is called an airbag opposing part, comprises the rectangular shape which made the corner | angular part curved, and is arrange | positioned along the upper edge part of the folded airbag 1, A reinforcing bulge portion 32 is formed along the central portion, and a reinforcing rib portion 33 is bent along the other side portion in the longitudinal direction.

  Then, from the other side portions in the vicinity of both end portions of the substrate portion 31 in the longitudinal direction, attachment portions 35 are integrally projected. Each attachment portion 35 includes a vehicle body attachment portion 37 as a first attachment portion and an airbag attachment portion 38 as a second attachment portion, and these vehicle body attachment portion 37 and the airbag attachment portion. The intermediate connecting plate portion 41 constituting an extending portion that is integrally connected to the vehicle body 38, and the vehicle body mounting portion 37, the airbag mounting portion 38, and the intermediate connecting plate portion 41 and the substrate portion 31 are connected to each other. And a connecting plate portion 42 that constitutes the extending portion. The vehicle body attachment portion 37 and the airbag attachment portion 38 are aligned with each other, that is, substantially parallel to each other, and the vehicle body attachment portion 37 is shown in FIG. It is spaced apart from the substrate portion 31 by the indicated dimension L1. Further, the substrate portion 31, the intermediate connecting plate portion 41, and the connecting plate portion 42 are arranged in a direction intersecting with the vehicle body attaching portion 37 and the airbag attaching portion 38. The vehicle body attachment portion 37 and the airbag attachment portion 38 are formed with circular attachment holes 37a and 38a.

  Further, a locking portion 44 that protrudes from the vehicle body mounting portion 37 of the one mounting portion 35 and is hooked on the vehicle body panel 15 for positioning and temporary fixing is formed. Further, a member attachment portion 46 for attaching a member such as an assist grip protrudes from the vehicle body attachment portion 37 of the other attachment portion 35. Further, a temporary fixing portion 48 for temporarily fixing to the vehicle body panel 15 with a rivet or the like protrudes from an intermediate portion of the substrate portion 31.

  In addition, as shown in FIG. 2, a mounting hole 51 constituting a mounting portion is formed at a predetermined position of the vehicle body panel 15, and is positioned outside the mounting hole 51 and covered by welding or the like. A nut 52 constituting the attachment portion is integrally fixed. Then, the shaft 52a of the bolt 54, which is a fixing tool and a fastening tool, is screwed into the nut 52 through the mounting hole 51 from the inside of the vehicle, and the head 54b is tightened toward the vehicle body panel 15. It is like that. An annular washer 55 and a substantially annular washer 56 are combined with the shaft portion 54a of the bolt 54. Further, although not shown, a locking receiving portion for locking the locking portion 44 is formed in the vicinity of the mounting hole 51 of the vehicle body panel 15. Further, a temporary fixing receiving portion is formed on the vehicle body panel 15 corresponding to the temporary fixing portion 48.

  In FIG. 1, reference numeral 58 denotes a rivet that is an airbag attachment tool. In FIG. 3, reference numeral 60 denotes an adhesive tape as an adhesive means, and the adhesive tape 60 is formed of a material that can be easily broken.

  Further, as shown in FIG. 4, a tether connection portion 23 a that connects and holds the tip portion of the tether 23 is formed near the tip portion of the front pillar 11.

  Next, the assembly process of this airbag apparatus 2 and the attachment process to the vehicle body 3 are demonstrated.

  The three mounting brackets attached to the airbag 1 are dedicated parts having different shapes, for example, a front mounting bracket 61 shown in FIG. 6, a central mounting bracket 62 shown in FIG. 8 and the rear mounting bracket 63 shown in FIG. 8 is used. In the following description, the mounting bracket 20 is used. 6 to 8, each mounting bracket 61, 62, 63 has a front side in the direction of arrow F. Each mounting bracket 61, 62, 63 is provided with a protruding piece 65 that abuts against the vehicle body panel 15, the pillars 11, 12, 13, etc., and stabilizes the position. For example, the protruding piece 65 formed at the center in the longitudinal direction of the center mounting bracket 62 abuts on the center pillar 12. Further, a reinforcing bead 66 is formed at a bent corner of each protruding piece 65 or the like as necessary. The member mounting portion 46 formed on the rear side of the front mounting bracket 61 and the member mounting portion 46 formed in the center of the rear mounting bracket 63 are for fixing the grab rail of the assist grip. is there.

  First, the airbag 1 is inserted into the sleeve 19 by folding the airbag main body portion 21 into a predetermined elongated shape from a state where the airbag 1 is spread in a flat shape. Then, each attachment piece 22 is pulled out from the slit 19b of the sleeve 19 to the outside. Further, the tether 23 is pulled out from the distal end side of the sleeve 19. The airbag body 21 can be folded in various ways. For example, as shown in FIG. 1 (a), the lower portion is folded into a roll to form the stacking portion 21a. At the same time, the upper portion can be folded as a parasol-shaped guide portion 21b that wraps the stacking portion 21a from both sides.

  Next, a total of three attachment brackets 20 are attached to the six attachment pieces 22. This mounting work is done by placing the mounting plate portion 31 along the airbag body 21, that is, the sleeve 19, and the mounting piece portion 22 on the outside of the airbag mounting portion 38 of the mounting bracket 20. Then, the rivets 58 are inserted into the mounting holes 38a and the mounting holes 22a of the mounting piece portions 22 and caulked, and the respective mounting piece portions 22 are fastened together and fixed to the airbag mounting portion 38. In this state, as shown in FIG. 1 (a), a part 58a of the rivet 58 is located outside the airbag mounting portion 38, but the thickness dimension of the part 58a is made smaller than the dimension L1. Designed to. Then, by attaching the base plate 31 and the sleeve 19 with the adhesive tape 60 so that the airbag 1 is not displaced left and right, the mounting work of the mounting bracket 20 is completed as shown in FIG. In FIG. 3, the connecting pipe 18a of the inflator 18 is shown connected to the gas inlet.

  The airbag device 2 is disposed along the vehicle body panel 15 and fixed by bolts 54. First, in a state where the airbag device 2 is placed along the vehicle body panel 15, the locking portion 44 of the mounting bracket 20 is hooked and locked to the temporary locking receiving portion of the vehicle body panel 15, and the temporary locking portion 48 is fixed to the vehicle body panel 15. Are fixed to the temporary fixing receiving portion with a rivet (not shown), positioned and temporarily fixed. In this state, the vehicle body mounting portion 37 of the mounting bracket 20 contacts the vehicle body panel 15, and the mounting holes 37a and 51 are aligned. Then, by inserting the shaft portion 54a of the bolt 54 fitted with the washer 55 and the washer 56 into the mounting holes 37a and 51 from the passenger compartment 4 side, and screwing and tightening the shaft portion 54a to the nut 52, Between the head 54b of the bolt 54 and the nut 52, the vehicle body panel 15 and the vehicle body mounting portion 37 are fastened together with the washer 55 and the washer 56. As shown in FIG. Fixed to the panel 15.

  Further, in this state, since the airbag mounting portion 38 is retracted by the dimension L1 from the vehicle body mounting portion 37 to the board portion 31 side, as shown in FIG. 15 is formed with a space portion C having a dimension L1. Therefore, a part 58a of the rivet 58 protruding outside the vehicle is accommodated in the space C. That is, the rivet 58 does not interfere with the vehicle body panel 15, each member is protected, and attachment work is easy. It has become.

  Next, the tip of the tether 23 led out from the tip of the airbag body 21 is connected to the tether connection 23a. At this time, since the distal end portion of the airbag body portion 21 that is folded into a long and narrow shape is positioned in front of the distal end portion of the airbag body portion 21 in the deployed state, a large amount of the tether 23 is generated and the airbag body portion 21 becomes loose. Therefore, the remaining portion of the tether 23 set to the length required for deployment is folded back along the sleeve 19 that wraps the airbag body 21, and one of the folded portions can be broken as shown in FIG. Adhering to the sleeve 19 with an adhesive tape 68 such as a cloth tape as temporary fixing means, or as shown in FIG. 10, both folded portions are adhered to the sleeve 19 with an adhesive tape 68 such as a cloth tape and held. .

  On the other hand, the inflator 18 is held by a retainer (not shown) and the like, and further, these retainers and the like are fixedly attached to the vehicle body panel 15 and the like with fastening parts, and further electrically connected to a control device (not shown) using a harness or the like. .

  Next, the airbag 1 and the inflator 18 are covered with a headlining 16a, so that the roof side of the airbag device 2 is located at the position shown in FIG. 4A as shown in FIGS. 1 (a) and 2 (a). The attachment to the part 5 is completed.

  Next, the deployment operation of the airbag 1 will be described.

  In the event of a side collision of the vehicle body 3, the inflator 18 is operated by the control device, and the gas injected from the inflator 18 is introduced into the airbag main body 21 from the gas inlet. Then, the airbag main body portion 21 rapidly protrudes downward from the roof side portion 5 while breaking the sleeve 19 and the adhesive tapes 60 and 68 while inflating the inflatable portion and further deforming the headlining 16a and the like. . The airbag 1 is inflated and deployed downward along the window or the like. That is, the airbag 1 covers the front and rear windows and the pillars 11, 12, and 13 in a curtain shape, and the heads of the passengers in the front and rear seats. Deploy to protect the chest, etc.

  Further, when the airbag 1 is deployed, the airbag mounting portion 38 of the mounting bracket 20 has a strong force as shown by an arrow D in FIG. Is pulled downwards. Then, the airbag mounting portion 38 of the mounting bracket 20 is deformed, and the airbag mounting portion 38 rotates so as to fall toward the vehicle body panel 15 as indicated by an arrow E in FIG. Then, the airbag mounting portion 38 or the rivet 58 mounted on the airbag mounting portion 38 comes into contact with the vehicle body panel 15, and the deformation of the mounting bracket 20 including the airbag mounting portion 38 is suppressed by the rigidity of the vehicle body panel 15. Then, supported by the mounting bracket 20, the airbag 1 is inflated and deployed in a desired direction.

  As described above, according to the present embodiment, a so-called curtain airbag attached in a state of being folded along the window frame of the passenger compartment 4 between the vehicle body panel 15 and the headlining 16a is used for the inflator 18 at the time of a vehicle collision. A curtain airbag device that is inflated by a gas generated from the vehicle and deployed in a curtain shape along the inner surface of the window frame of the passenger compartment 4. The mounting bracket 20 that attaches the airbag 1 to the vehicle body panel 15 is attached to the vehicle body panel 15. The vehicle body mounting portion 37 is provided, and an air bag mounting portion 38 to which the airbag 1 is mounted adjacent to the vehicle body mounting portion 37 is provided. Therefore, the work of attaching the airbag 1 to the mounting bracket 20 and the work of attaching the mounting bracket 20 to the vehicle body panel 15 can be separated to facilitate the assembly work of the airbag device 2 and the work of assembling it into the vehicle body 3. Further, since the vehicle body mounting portion 37 and the airbag mounting portion 38 are separated from each other, the degree of freedom in the shape such as the arrangement of the nut 52 and the like of the vehicle body panel 15 and the arrangement of the mounting piece 22 and the like of the airbag 1 is improved. Can improve versatility and reduce manufacturing costs.

  Further, since the airbag attachment portion 38 is formed to be retreated from the vehicle body panel 15 side to the substrate portion 31 side by the dimension L1 from the vehicle body attachment portion 37 and adjacent to the vehicle body attachment portion 37, the airbag attachment portion 38 and the vehicle body panel 15 are formed. A space C having a dimension L1 can be formed between the two. Therefore, a part 58a of the rivet 58 protruding outside the vehicle is accommodated in the space C. That is, the rivet 58 can be protected without interfering with the vehicle body panel 15, and each member can be protected and attachment work can be facilitated. .

  Further, when the space portion C is formed, a large force is applied to deform the mounting bracket 20 when the airbag 1 is deployed, but the airbag mounting portion 38 is closer to the substrate portion 31 than the vehicle body mounting portion 37 by a dimension L1. Therefore, the force developed by the airbag 1 causes the airbag mounting portion 38 to deform toward the vehicle body panel 15 side. Therefore, when the mounting bracket 20 is slightly deformed, the airbag mounting portion 38 or the rivet 58 mounted on the airbag mounting portion 38 is pressed against the vehicle body panel 15, and in addition to the rigidity of the mounting bracket 20, the vehicle body panel 15 The position of the mounting bracket 20 can be fixed using the rigidity of the above. Therefore, the airbag 1 can be stably supported by the mounting bracket 20, and the airbag 1 can be inflated and deployed in a desired direction. Further, since it is not necessary to increase the strength of the mounting bracket 20 more than necessary, it is not necessary to provide a structure such as a flange or a rib, so that the mounting bracket 20 can be reduced in size and can be disposed in a narrow space such as the roof side portion 5. It is possible to reduce the manufacturing cost and reduce the weight by reducing the thickness.

  Further, when the mounting portion 35 provided with the airbag mounting portion 38 is deformed so as to rotate toward the vehicle body panel 15, the corner portion of the mounting bracket 20 does not move so as to bite into the airbag 1. 1 can be easily protected.

  Note that the angle at which the mounting bracket 20 is deformed and rotated in the direction of arrow E until it contacts the vehicle body panel 15 is 10 degrees or less, so that the mounting bracket 20 can contact the vehicle body panel 15 quickly and reliably. The airbag 1 can be inflated and deployed in a desired direction while suppressing the deformation of the mounting bracket 20.

  Further, since the base plate portion 31, the intermediate connecting plate portion 41, and the connecting plate portion 42 are integrally formed continuously in the intersecting direction with respect to the vehicle body attaching portion 37 and the airbag attaching portion 38, the airbag attaching portion 38 In other words, the portion can be shaped like a box to increase the rigidity. Therefore, the mounting bracket 20 can be formed of a general steel plate and the thickness dimension can be reduced, so that the manufacturing cost can be reduced and the weight can be reduced.

  Also, when attaching the airbag 1 to the vehicle body 3, the surplus portion of the tether 23 set to the length required for deployment is folded back along the sleeve 19 that wraps the airbag body 21, and one of the folded portions Alternatively, both of them are adhered to the sleeve 19 with an adhesive tape 68 and held so as to be able to be separated when deployed, and adjusted to a relatively short length that is optimal for mounting work. Therefore, when the airbag 1 is attached, the tether 23 is not loosened, and biting or the like is not caused when the pillar garnish 11a or the headlining 16a is attached, thereby improving workability and reducing manufacturing costs. . On the other hand, when the airbag 1 is deployed, the pressure-sensitive adhesive tape 68 is broken to an optimum length when deployed, and the airbag 1 can be stably supported. Further, by stopping the tether 23 using the adhesive tape 68, the length dimension can be adjusted easily and accurately.

  When the airbag main body 21 is supported also on the rear side portion of the airbag 1 using a tether, the length adjustment by the adhesive tape 68 can be applied to the rear tether. Furthermore, when supporting the airbag body using a support member such as a triangular base fabric, the length of the support member is adjusted using a temporary fixing member such as an adhesive tape. By doing so, it is possible to improve the workability at the time of assembling the airbag device while reliably supporting the airbag main body during deployment.

  In the above-described embodiment, the attached portion is the vehicle body panel 15 of the vehicle body 3 of the automobile. However, the present invention is not limited to this configuration, and the airbag device has appropriate rigidity and uses a fixture such as a bolt. Any member to which 2 is attached may be used.

  Further, the mounting bracket 20 is not limited to metal, and can be formed of synthetic resin or the like.

  In addition, the airbag 1 is not limited to the configuration in which the front seat protection portion and the rear seat protection portion are connected by the communication portion, and the gas introduction port is provided at the rear end portion, and can take various forms. For example, it is possible to provide a gas introduction port that is located at the upper center of the airbag main body and communicates the inflating portion with the outside.

  The present invention is not limited to a configuration that extends from the upper side to the lower side and covers the side window portion of the automobile, and can be applied to an appropriate airbag device that needs to be inflated and deployed in a planar shape along a predetermined surface. .

FIG. 4 is an explanatory view of a position corresponding to the II cross section of FIG. 3 showing an embodiment of the airbag device of the present invention, where (a) is a stored state and (b) is a deployed state. It is explanatory drawing of the II-II cross section equivalent position of FIG. 3 of an airbag apparatus same as the above, (a) is a accommodation state, (b) is a deployment state. It is a partial perspective view which shows the accommodation state of an airbag apparatus same as the above. It is explanatory drawing which shows the attachment state of an airbag apparatus same as the above. It is explanatory drawing which shows the attachment bracket of an airbag apparatus same as the above, (a) is a top view, (b) is the front view seen from the vehicle outer side. It is explanatory drawing which shows the attachment bracket for front parts of an airbag apparatus same as the above, (a) is a top view, (b) is the front view seen from the vehicle outer side. It is explanatory drawing which shows the attachment bracket for the center of an airbag apparatus same as the above, (a) is a top view, (b) is the front view seen from the vehicle outer side. It is explanatory drawing which shows the attachment bracket for rear parts of an airbag apparatus same as the above, (a) is a top view, (b) is the front view seen from the vehicle outer side. It is explanatory drawing which shows the accommodation state of the tether of an airbag apparatus same as the above. It is explanatory drawing which shows the other example of the accommodation state of the tether of an airbag apparatus same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air bag 2 Air bag apparatus
15 Car body panels that make up the mounted member
20 Mounting bracket
31 Substrate part constituting the extension part
37 Body attachment as the first attachment
38 Airbag attachment as a second attachment
41 Intermediate connecting plate constituting the extension
42 Connecting plate part constituting the extended part
51 Mounting holes constituting the mounted part
52 Nuts that make up the mounted part
58 Rivet as air bag fitting C Space

Claims (3)

An airbag in which gas is introduced and deployed;
A first attachment portion attached to the attachment portion of the attachment member; and a second attachment portion attached to the airbag spaced apart from the first attachment portion, wherein the second attachment portion is provided when the airbag is deployed. An airbag device comprising: an attachment bracket whose attachment portion is pressed toward the attached member side and whose position is fixed. The mounted member constitutes the vehicle body panel of the vehicle,
The first mounting portion is held in contact with the vehicle body panel,
The second mounting portion is normally spaced from the vehicle body panel via a space portion, and is attached to the airbag by an airbag mounting tool partially disposed in the space portion. The airbag apparatus as described. The first mounting portion and the second mounting portion are plate-shaped,
A plate-like extension that is disposed with the direction intersecting the surface direction of the first attachment portion and the second attachment portion as the surface direction, and is integrally formed with the first attachment portion and the second attachment portion. The airbag device according to claim 1, further comprising an installation portion.

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