JP6218579B2 - Case body of airbag device - Google Patents

Description

  The present invention relates to a case body of an airbag device that houses a folded airbag and an inflator that supplies gas for inflating and deploying the airbag.

  2. Description of the Related Art Conventionally, an airbag device for a passenger in a passenger seat disposed on an instrument panel of an automobile has a box-shaped case body, and a folded airbag and an airbag are inflated inside the case body. It is known that it contains an inflator that injects gas, and the upper opening of the case body is covered with a seamless design cover body that is integrated with the instrument panel, that is, seamlessly formed. Yes. When the automobile collides, the airbag into which inflation gas is blown from the inflator pushes up the instrument panel that covers the inflation side of the airbag, and the inflation line breaks the tear line provided on the instrument panel. The door flap, that is, the door portion is configured to open.

  A case body of such an airbag device is provided with a door reinforcing portion separately attached to an inner portion in which a flange portion is provided on a rectangular tube-shaped main body portion, and is integrated with an instrument panel with respect to the door reinforcing portion. After fixing the outer part, an air bag and an inflator held by a retainer made of steel or the like are inserted into the main body part and fixed to a fixed part such as a steering member with a bolt or the like (for example, see Patent Documents 1 and 2). .)

JP 2006-137375 A (page 4-8, Fig. 1-3) JP 2006-176061 A (Page 5-10, FIG. 1)

  However, in the case of the airbag apparatus as described above, the impact is mitigated by the structure for reducing the weight, and when the object collides with the airbag apparatus mounting portion of the instrument panel, by the airbag apparatus before the operation. A complicated configuration that suppresses the reaction force received by the object is required.

  This invention is made | formed in view of such a point, and it aims at providing the case body of the airbag apparatus which can be manufactured lightweight and cheaply.

The case body of the airbag device according to claim 1 is a case body of an airbag device that houses a folded airbag and an inflator that supplies a gas for inflating and deploying the airbag, and the folded airbag. And a storage part that holds the inflator inside and is provided with an opening through which the inflated airbag protrudes, and extends from an edge of the opening of the storage part and bends toward the opening. An inner portion having a lid portion fixed to the housing portion at a position covering at least a part of the airbag housed in the housing portion, and covering at least the position of the lid portion with respect to the inner portion. ; and a outer portion being secured Te, the storage unit includes a support receiving portion continuous with the edge of the opening, the lid portion is deformable bent heat continuous with said support receiving portion A support portion that is coupled to the support receiving portion via the bent hinge portion, and at least a portion of which is overlapped with the support receiving portion by bending the opening portion of the storage portion at the bent hinge portion. The inner door planned portion that covers the opening and is deployed by the deployment pressure when the airbag is inflated, and the inner door planned portion and the support portion are deformably connected, and the storage portion of the bent hinge portion And a hinge portion positioned in the storage portion by bending toward the opening .

The case body of the air bag device 請 Motomeko 2 wherein, in the case of the airbag apparatus according to claim 1, wherein the support portion includes an insertion opening, the support receiving portion has an opening of the storage portion in the bent hinge portion A convex portion that is inserted into the insertion opening by bending the lid portion toward the portion side and is substantially flush with the support portion is provided.

The case body of the air bag device 請 Motomeko 3 wherein, in the case of the airbag apparatus according to claim 1 or 2, housing portion includes a side surface portion inclined at an acute angle shape with respect to the lid portion, the inner portion Is provided with a rotation hinge portion that rotatably connects the side including the lid portion and the side surface portion and the side not including the side surface portion.

The case body of the airbag device according to claim 4 is the case body of the airbag device according to any one of claims 1 to 3 , wherein the outer portion is fixed to the inner portion by vibration welding, and the inner portion is And a jig insertion hole for inserting a jig for supporting the inner door planned portion when the outer portion is vibration welded.

The case body of the airbag device according to claim 5 is the case body of the airbag device according to any one of claims 1 to 4 , wherein the inner portion is a state in which the lid portion is bent toward the opening side of the storage portion. A temporary fixing portion for temporarily fixing the lid portion to the storage portion is provided.

According to the case body of the airbag device according to claim 1, the inner portion is formed by extending the lid portion from the edge portion of the opening portion of the storage portion that holds the folded airbag and inflator. Is bent toward the opening, and the lid is fixed to the storage at a position where at least a part of the airbag covers the airbag stored in the storage, and the outer is fixed at least covering the position of the cover. . In addition, the support part is connected to the support receiving part that is continuous with the edge of the opening part of the storage part so that the support part can be deformed via the bent hinge part, and the inner door is planned to be connected to the support part via the hinge part. The support portion is overlapped with the support receiving portion by bending the lid portion toward the opening portion of the storage portion at the bent hinge portion, and the hinge portion is located in the storage portion and the inner door planned portion Covers the opening. As a result , the inflator and the folded airbag can be stored in the storage part without separately providing and integrating the storage part and the lid part, or fixing the airbag or inflator using a separate member or the like. In addition, the case body covered with the lid can be easily manufactured at a low cost and at a low cost.

According to the case body of the air bag device 請 Motomeko 2 wherein, in addition to the effect of the case body of the air bag device according to claim 1, wherein a convex portion provided on the support receiving portion is a storage portion in the bent hinge portion By bending the lid portion toward the opening portion, it is inserted into the insertion opening of the support portion and becomes substantially flush with the support portion. Therefore, the bent support receiving portion and the support portion can be easily aligned, and the outer portion Can be easily formed.

According to the case body of the air bag device 請 Motomeko 3 wherein, in addition to the effect of the case body of the air bag device according to claim 1 or 2, wherein the side including the side surface portion inclined at an acute angle shape with respect to the lid portion The mold can be designed so that the angle of the side surface portion does not undercut with respect to the direction in which the inner portion is removed by rotating the hinge portion in advance with respect to the side not including the side surface portion. It is not necessary to use an expensive mold having a configuration such as a corresponding movable piece, and the inner portion and the case body can be manufactured at a lower cost.

According to the case body of the airbag device according to claim 4 , in addition to the effect of the case body of the airbag device according to any one of claims 1 to 3 , the jig is inserted into the jig insertion hole provided in the inner portion. Then, when the outer portion is vibration welded, the inner door planned portion is supported by the jig, so that the outer portion and the inner portion can be more reliably brought into close contact with each other and can be easily and reliably fixed.

According to the case body of the airbag device according to claim 5 , in addition to the effect of the case body of the airbag device according to any one of claims 1 to 4 , the lid portion is bent toward the opening portion side of the storage portion. Thus, by temporarily fixing the lid portion to the storage portion by the temporary fixing portion, it is not necessary to hold the lid portion when the outer portion is fixed to the inner portion, the workability is good, and the productivity can be further improved.

It is a disassembled perspective view which shows 1st Embodiment of the case body of the airbag apparatus of this invention. It is sectional drawing which shows the time of shaping | molding of the case body of an airbag apparatus same as the above on the right side, and shows the time of an assembly on the left side. It is a top view which shows a part of manufacturing process of the case body of an airbag apparatus same as the above. (A) is sectional drawing at the time of manufacture of a part of temporary fixing part of the inner part of the case body of an airbag apparatus same as the above, (b) is sectional drawing after manufacture of the temporary fixing part of (a). It is a perspective view which shows a part of 2nd Embodiment of the case body of the airbag apparatus of this invention. It is a side view of the case body of an airbag apparatus same as the above. It is sectional drawing which shows typically a part of shaping | molding die which shape | molds a case body same as the above. It is a disassembled perspective view which shows 3rd Embodiment of the case body of the airbag apparatus of this invention. It is a side view of the case body of an airbag apparatus same as the above. It is a top view which shows a part of manufacturing process of the case body of an airbag apparatus same as the above.

  Hereinafter, a first embodiment of a case body of an airbag device according to the present invention will be described with reference to the drawings.

  1 and 2, reference numeral 10 denotes an airbag device. The airbag device 10 constitutes an airbag device 10 for a passenger on a passenger seat provided in an instrument panel unit 13 which is a mounted portion of an automobile. is there. The instrument panel portion 13 is provided at the front portion of the passenger compartment over substantially the entire length in the vehicle width direction, and a front window glass (wind shield) is positioned above the instrument panel portion 13. An airbag device 10 is installed inside the instrument panel portion 13 so as to face the passenger in the passenger seat. The airbag device 10 includes a case body 14, an inflator 15 held by the case body 14, and a bag-like airbag 16 folded and stored in the case body 14, so to speak, a shell packing airbag module. It should also be called, and is fixed to the vehicle body via a bracket (not shown). In the present embodiment, the inflator 15 is formed, for example, in a flat disk shape or a columnar shape, and a connector portion (not shown) to which an electric wire 17 called a harness is connected is provided at the bottom portion that is the lower end portion. The inflator 15 is electrically connected to the control device via this connector portion. The airbag 16 is formed into a bag shape by a single or a plurality of base fabrics, and an insertion hole 16a into which the inflator 15 is inserted is opened at the center, and an airbag is formed around the insertion hole 16a. A plurality of through holes 16b for fixing 16 to the case body 14 are opened.

  When an automobile equipped with the airbag device 10 collides, the airbag 16 is inflated by the gas supplied from the inflator 15 operated by the control device, and a part of the case body 14 is caused by the pressure of the inflation. The airbag 16 is broken to form an inflation outlet, and the airbag 16 projects upward as a predetermined direction on the inflation side, and the airbag 16 is inflated and deployed forward of the occupant. In the following, the predetermined direction on the inflation side of the airbag 16, that is, the occupant side, is the upper side (the direction of arrow A shown in FIG. 2), the front side or the front side, and the opposite side of the inflation side is the lower side, the rear side, or This will be described as the back side. Further, the front-rear direction and the both-side direction in the state where the airbag device 10 is attached to the automobile will be described as the front-rear direction and the both-side direction. However, the attachment state of the airbag device 10 is not limited to this configuration. It can also be attached with the side facing upward or rearward on the rear side.

  The case body 14 includes an outer portion 21 serving as an outer skin, and an inner portion 22 fixed to the outer portion 21 by vibration welding using a vibration welding machine, and is an instrument that is an interior panel for an automobile. It is configured integrally with the ment panel unit 13.

  The outer part 21 is also called a skin panel, an outer panel part, a panel body, a lid outer or the like, and is a resin molded product (panel body) molded from a predetermined synthetic resin such as polypropylene (PP), for example, and an instrument panel. The surface side of the portion 13 is integrally covered and exposed to the outside, and is provided in a substantially plate shape at the front portion of the vehicle compartment over substantially the entire length in the vehicle width direction.

  A tear line 24, which is a weak portion as a portion to be broken, is formed on the rear surface side of the outer portion 21, and a pair of front and rear sides surrounded by the outer outer portion 25 that is a non-deployed portion. Plane rectangular outer door planned portions 26 and 26 are partitioned. These planned outer door portions 26, 26 cover the bulging side of the airbag 16 that is folded and stored during normal times. Further, on the back side of the outer portion 21, a mounting portion 27 such as a clip seat is formed at a position in the vicinity of the outer edge portion, and a clip 28 that is a mounting member attached to the mounting portion 27 is an instrument panel. The case body 14 is fixed to the instrument panel portion 13 by being press-fitted into the attachment opening 29 of the portion 13.

  The tear line 24 can also be called a tear, a tear groove, a planned fracture part, a planned fracture line, a planned door line part or a fracture part, and has a V-shaped cross section that is weaker than the adjacent part, and can be broken and easily deformed. In the present embodiment, in the present embodiment, the first tear line 24a that extends to the both sides of the central portion and receives the deployment pressure of the airbag 16 and the second tear line 24b that constitutes the outer shape has a substantially “Sun” shape. In other words, it is a combination of square-shaped tear lines that are closed loops. The tear line 24 may be formed when the outer portion 21 is formed, or may be formed by engraving with a rotary blade or the like after the outer portion 21 is formed.

  On the other hand, the inner portion 22 is a resin molded product integrally formed of a material that is softer than the material constituting the outer portion 21, for example, a predetermined synthetic resin such as thermoplastic elastomer (TPE). The lid portions 32 and 32 are provided.

  The storage unit 31 is a rectangular box-shaped, that is, a bottomed (bottomed rectangular tube) storage unit main body 33 that stores the inflator 15 and the airbag 16, and protrudes outward from the upper edge of the storage unit main body 33. And a flange portion 34 as a developed support portion. The storage part 31 is formed substantially symmetrically in the left-right direction and the front-rear direction as a whole.

  The storage body 33 is also referred to as a container part. The left side part 35 and the right side part 36, which are long side parts as a pair of opposing side parts facing left and right, and a pair of side parts opposite to each other A front side surface portion 37 and a rear side surface portion 38 which are short side surface portions, and a rectangular bottom surface portion 39 which is continuous with the lower end portions of the side surface portions 35, 36, 37 and 38. The airbag 16 is stored inside the storage unit main body 33 in a state in which the upper end portions of the side surface portions 35, 36, 37, and 38 face the outer door planned portions 26 and 26 of the outer portion 21 and are folded. Is a rectangular opening 40 protruding during expansion and deployment.

  A jig J1 (FIG. 3) used for vibration welding between the inner portion 22 and the outer portion 21 is placed on the side portions 35 and 36 at the upper end portion, that is, in the vicinity of the opening portion 40. 33), the rectangular hole-shaped jig insertion holes 42 inserted from the outside to the inside are opened apart from each other in the front-rear direction. Furthermore, the upper end portions of the side surface portions 35 and 36 protrude upward from the upper end portions of the side surface portions 37 and 38, for example, by the thickness of the lid portion 32.

  On the side surface portions 37 and 38, a jig J2 (FIG. 3) used for vibration welding of the inner portion 22 and the outer portion 21 is disposed at the upper end portion, that is, in the vicinity of the opening portion 40. 33), a rectangular hole-shaped jig insertion hole 43 to be inserted from the outside to the inside is opened.

  Here, as shown in FIG. 3, each jig J1 is formed in a straight bar shape thicker than the jig J2 by a member such as a metal, and from each jig insertion hole 42 of each side surface portion 35, 36. The storage unit body 33 (storage unit 31) is inserted inward toward the center in the left-right direction. Protrusions J1a for engaging with the jig J2 are respectively provided at the tips of the jigs J1. The jig J2 is formed in a straight bar shape by a member such as metal, and is inserted along the front-rear direction through the jig insertion holes 43 of the side surface portions 37 and 38. The jig J2 is formed with a locking opening J2a into which the protrusion J1a of each jig J1 is inserted and locked. By inserting and locking the protrusion J1a into the locking opening J2a, the jig J2 J1 is positioned by being offset in the longitudinal direction of the jig J2. These jigs J1 and J2 are arranged in a lattice shape at the position of the opening 40 by inserting and locking the protrusion J1a into the locking opening J2a and being combined in a lattice shape, The lid portion 32 is supported from below with respect to pressurization from above during vibration welding.

  As shown in FIGS. 1 and 2, a bottomed cylindrical holding portion 45 for press-fitting and holding the inflator 15 is formed in the bottom portion 39 in the bottom portion 39 so as to be recessed downward. In addition, a plurality of circular through holes 46 are formed on the bottom surface 39 around the holding part 45, in which retainer bolts of retainers (not shown) that hold the airbag 16 are inserted together with the through holes 16b of the airbag 16. Has been. An exposure opening 47 through which the connector part of the inflator 15 is exposed is opened at the bottom of the holding part 45.

  The flange portion 34 is continuous with the left and right flanges 51 and 52, which are long side flanges as a pair of left and right (one) flanges continuous with the upper end portions of the side surface portions 35 and 36, and the upper end portions of the side surface portions 37 and 38. And a front flange 53 and a rear flange 54 which are support receiving portions (short side flanges) as a pair of front and rear (other) flanges. The flanges 51, 52, 53, 54 are integrally formed continuously with each other at positions outside the opening 40, and are formed in a rectangular frame shape surrounding the periphery of the opening 40.

  The flanges 51 and 52 each have a substantially plate shape extending in a planar shape along a direction orthogonal to the deployment direction of the airbag 16. The flanges 51 and 52 are respectively provided with locking holes 56 for temporarily locking the lid 32 at positions of the edges of the opening 40 that is continuous with the side surfaces 35 and 36. Further, welding ribs 57 for vibration welding are formed in a lattice shape on the upper surfaces of the flanges 51 and 52 facing the outer portion 21 before the outer portion 21 is welded (when the inner portion 22 is formed).

  The flanges 53 and 54 each have a substantially plate shape extending in a planar shape along a direction orthogonal to the deployment direction of the airbag 16. Each of the flanges 53 and 54 is provided with a locking hole 58 for temporarily locking the lid 32 at the center in the left-right direction. Further, the flanges 53 and 54 are respectively provided with protruding portions 59 that are inserted into the lid portion 32 side at positions on both sides of the locking hole 58.

  Each convex portion 59 is formed in a rectangular shape having a longitudinal direction along the front-rear direction orthogonal to the left-right direction, which is the longitudinal direction of the flanges 53, 54, for example, and is located on both the left and right sides of the jig insertion hole 43 doing. Further, these convex portions 59 protrude upward corresponding to the protrusions with respect to the side surface portions 37 and 38. That is, these convex portions 59 have upper surface portions that are substantially flush with the flanges 51 and 52, and the upper surface portion is worn for vibration before the outer portion 21 is welded (when the inner portion 22 is molded). The welding ribs 60 are formed in a lattice shape. And between flange 53, 54 between these convex parts 59 and both sides become the so-called recessed part 61 of so-called square shape.

  Each lid portion 32 can also be called a reinforcement flap or the like, and includes a support portion 65, a planned inner door portion 66, a hinge portion 67 that connects the support portion 65 and the planned inner door portion 66 in a deformable manner, and a support. A bending hinge portion 68 that integrally couples the portion 65 and the upper ends of the flanges 53 and 54 of the storage portion 31 is provided. The lid portion 32 extends outward with respect to the housing portion 31 when the inner portion 22 is molded, and is bent and inverted by the bending hinge portion 68 toward the housing portion 31 side when the case body 14 is assembled. (Turned back).

  The support portion 65 can also be called a sub-flange portion or the like, is a portion that is not deployed due to the inflation pressure of the airbag 16, and opposes the back surface of the outer shell portion 25 of the outer portion 21. The support portion 65 has a plate shape extending in a planar shape along a direction orthogonal to the deployment direction of the airbag 16. The support portion 65 has a hook portion 71 projecting from the center portion, which is a locking projection that is inserted into the locking hole 58 and temporarily locked. In addition, a rectangular insertion opening 72 into which the convex portions 59 of the flanges 53 and 54 are inserted and fitted is opened in the support portion 65 across the bent hinge portions 68 on both sides of the hook portion 71. Accordingly, the support portion 65 is divided in the left-right direction so as to be continuous with the flanges 53 and 54 at the positions of the respective recesses 61. Further, on the support portion 65, welding ribs 73 for vibration welding are formed in a lattice shape before the outer portion 21 is welded (when the inner portion 22 is formed). The support portion 65 is configured to be directly overlapped with the flanges 53 and 54 in a state where the lid portion 32 is inverted and bent toward the storage portion 31 (opening portion 40) at the position of the bending hinge portion 68. And this support part 65 is overlapped with flanges 53 and 54 and constitutes inner outer part 74 together with flanges 51 and 52, and this inner outer part 74 is fixed to the back side of outer outer part 25, An outer portion 75 that surrounds the outside of the tear line 24 and is not deployed by the inflation pressure of the airbag 16 is formed.

  The hook part 71 has a claw part 71a at the tip part. In the hook portion 71, for example, a claw portion 71a is formed when a piece 76 disposed in a forming die (mold) of the inner portion 22 is abutted through the support portion 65 (FIG. 4A and FIG. 4). FIG. 4 (b)). The position of the support portion 65 through which the piece 76 passes is an opening 77 facing the lower side of the claw portion 71a. The hook portion 71 and the locking hole 58 temporarily fix the lid portion 32 to the storage portion 31 in a state where the lid portion 32 is inverted and bent toward the opening portion 40 side of the storage portion 31 (first) A fixed part 78 is configured.

  The welding rib 73 is formed on the back side of the support portion 65 when the inner portion 22 is molded, that is, on the anti-outer portion 21 (anti-outer outer portion 25) side, and the lid portion 32 is placed at the position of the bent hinge portion 68 in the storage portion 31. In the state of being inverted and bent toward the opening 40 side, the welding ribs 57 of the flanges 51 and 52 and the welding rib 60 of the convex portion 59 are substantially flush with each other, and are fixed to the back side of the outer outer portion 25 of the outer portion 21. It has become so.

  The planned inner door portion 66 covers the airbag 40 stored in the opening 40 and the storage portion 31 in a state where the lid portion 32 is inverted and bent toward the opening 40 side of the storage portion 31 at the position of the bending hinge portion 68. It is like that. Each planned inner door portion 66 has a plate shape extending in a planar shape along a direction orthogonal to the direction of deployment of the airbag 16, and in this embodiment, half of the opening 40 in the front-rear direction is provided. Each is formed in the covering area. The planned inner door portion 66 is fixed to the back side of the planned outer door portion 26 to form the planned door portion 81. Further, locking projections 82 inserted and locked in the locking holes 56 and 56 of the flanges 51 and 52 are provided on both left and right side portions of the planned inner door portion 66 on the side opposite to the hinge portion 67 (on the side opposite to the storage portion 31). Are projected in the thickness direction. These locking projections 82 are respectively provided on projecting piece portions 66a that project laterally from both sides of the planned inner door portion 66, and a claw portion 82a projects outward. Then, a temporary fixing portion 83 that temporarily fixes the lid portion 32 to the storage portion 31 in a state where the lid portion 32 is inverted and bent toward the opening 40 side of the storage portion 31 by the locking protrusions 82 and the locking holes 56. Is configured. Further, on the planned inner door portion 66, welding ribs 84 for vibration welding are formed in a lattice shape before the outer portion 21 is welded (when the inner portion 22 is molded). The welding rib 84 is formed on the back side of the inner door planned portion 66 when the inner portion 22 is molded, that is, on the side opposite to the outer portion 21 (anti-outer door planned portion 26), and the lid portion 32 is positioned at the bent hinge portion 68. In the state of being inverted and bent toward the opening 40 side of the storage portion 31, the outer rib portion is substantially flush with the welding rib 57 of the flanges 51 and 52, the welding rib 60 of the convex portion 59, and the welding rib 73 of the support portion 65. It is fixed to the back side of the 21 outer door planned portion 26.

  The hinge portion 67 is curved in a U-shape to flexibly connect the support portion 65 and the planned inner door portion 66. When the inner portion 22 is molded, the hinge portion 67 bulges upward, and the lid portion 32 is bent. In the state of being inverted and bent toward the storage unit 31 (opening 40) at the position 68, it is inserted into the opening 40 and positioned in the storage unit 31 (storage unit body 33) in the vicinity of the upper ends of the side surfaces 37 and 38. Then, it curves so as to bulge downward, that is, toward the side of the stored airbag 16 along a part (long side) of the second tear line 24b positioned in the front-rear direction and straddles the tear line 24 in the front-rear direction. Further, a notch opening 86 is formed in the central portion of the hinge portion 67 in the longitudinal direction (left-right direction). The notch opening 86 is set to have a longitudinal dimension corresponding to the jig insertion hole 43 (substantially equal to the jig insertion hole 43), and the lid portion 32 is placed at the position of the bent hinge portion 68 in the storage portion 31 (opening portion 40). The jig J2 is inserted into the jig insertion hole 43 so as to face the jig insertion hole 43 in a state where the jig J2 is folded back.

  The bent hinge portion 68 is used to fold the formed lid portion 32 toward the storage portion 31 before being welded to the outer portion 21, and each lid portion 32 (support portion 65) and flanges 53, 54 are connected to each other. For example, the lower surface side at the time of molding is formed in a groove shape so as to be thinner than the other portions of the lid portion 32. Therefore, the upper surface of the bent hinge portion 68 is substantially flush with the lid portion 32 (support portion 65) and the flanges 53 and 54 during molding. In addition, the bent hinge portion 68 is linearly formed in the left-right direction along each support portion 65 and the flanges 53 and 54 at a position excluding the insertion opening 72 of the support portion 65 in this embodiment. Yes.

  When assembling the case body 14, first, the inflator 15 is press-fitted from the opening 40 into the holding portion 45 and held in the preformed inner portion 22, and the retainer is inserted into the predetermined shape. The airbag 16 folded into the retainer bolt is inserted into the retainer bolt through hole 46 and fastened with a nut or the like to be fixed to the bottom portion 39, and the inflator 15 and the airbag 16 are stored in the storage portion 31 (the storage portion main body). Store in 33).

  Next, the jig J2 is inserted into the jig insertion holes 43, 43 of the inner portion 22 from the outside of the storage portion 31 (storage portion main body 33), and is further cured with respect to the jig insertion holes 42, respectively. J1 is inserted from the outside of the storage unit 31 (storage unit main body 33), and the protrusion J1a at the tip of the jig J1 is inserted and locked to the locking opening J2a of the jig J2, respectively. Assemble J2 in a grid.

  Further, each lid portion 32 of the inner portion 22 is folded back so as to be inverted and bent toward the opening 40 side of the storage portion 31 by each bending hinge portion 68, and the claw portion 71a of each hook portion 71 is fitted to each locking hole. 58, and the claw portions 82a of the respective locking projections 82 are inserted and locked into the respective locking holes 56 of the flanges 51 and 52, whereby each lid portion 32 is accommodated by the temporary fixing portions 78 and 83. Temporarily fix to the 31 side. In this state, the support portion 65 is fitted to each recess 61 and overlapped on the flanges 53 and 54, and the projections 59 are fitted to the insertion openings 72, so that the flanges 51, 52 and the projections 59 The upper surface (the upper surfaces of the welding ribs 57 and 60) and the upper surfaces of the inverted and bent support portions 65 and the inner door planned portions 66 (the upper surfaces of the welding ribs 73 and 84) are substantially flush with the outer portion 21. The welding surface to be welded is configured as a whole, and the hinge portions 67 and 67 are positioned at the front and rear edges of the opening 40 in the storage portion 31 (storage portion main body 33), and the inner door planned portions 66 and 66 are provided. The upper part of the opening 40 is covered.

  Thereafter, welding is performed by vibration welding that causes the inner part 22 to vibrate relatively with respect to the outer part 21 using a vibration welding machine in a state in which the outer part 21 separately formed in advance is overlapped with the inner part 22. When the ribs 57, 60, 73, 84 are melted in a dimension along the protruding direction, that is, the vertical direction, the inner outer portion 74 is welded and joined to the outer outer portion 25 to form the outer portion 75, and the inner door planned portion 66 and 66 are welded to the outer door planned portions 26 and 26 to form the planned door portion 81. In this way, the airbag device 10 in which the inflator 15 and the airbag 16 are stored and held in the storage portion 31 and covered with the planned door portion 81 is completed.

  The airbag device 10 connects the electric wire 17 to the connector portion of the inflator 15, fixes the case body 14 to the vehicle body side with a bracket or the like (not shown), and attaches the clip 28 attached to the attachment portion 27 of the outer portion 21 to the attachment opening It is inserted into and fixed to the part 29 and attached integrally to the inside of the instrument panel part 13.

  When the airbag device 10 is activated and gas flows into the airbag 16 to inflate, that is, inflate and deploy, the inner doors before and after the inner portion 22 are planned due to the inflating force that the airbag 16 inflates in the case body 14. The planned door portions 81 and 81 are pushed up through the portions 66 and 66. Then, by this force, the first tear line 24a and the second tear line 24b of the outer portion 21 are broken, that is, the tear line 24, which is a weak portion of the outer portion 21, is broken over the entire length, and the outer door planned portions 26 and 26 become the outer portion. The door portion is formed by being separated from the other portions of the 21, and the planned door portions 81, 81 are rotated or deployed as the door portion while the hinge portion 67 is extended to form the inflation outlet of the airbag 16.

  When the airbag 16 is deployed, the first tear line 24a is ruptured over its entire length, but the second tear line 24b is ruptured over its entire length, and only the short side on both sides is ruptured, and the hinge portion 67 A part or all of the portion along the line can be designed to function as a hinge that is easily bent without breaking.

  Thus, according to the present embodiment, the lid portions 32, 32 are extended outward from the front and rear edges of the opening portion 40 of the storage portion 31 that holds the folded airbag 16 and inflator 15 inside. The inner portion 22 is formed, the lid portions 32, 32 are inverted and bent toward the opening 40, and at least a part of the lid portions 32, 32 is covered with the airbag 16 stored in the storage portion 31. While fixing to the storage part 31 and covering at least the positions of the cover parts 32, 32, the outer part 21 is fixed, so that the storage part and the cover part are separately provided and integrated using a separate process, or separately The case body 14 that stores the inflator 15 and the folded airbag 16 in the storage part 31 and is covered with the lid part 32 without being fixed to the airbag or inflator by using any of the above members is lightweight and inexpensive. Can be manufactured.

  Specifically, the support portions 65 and 65 are deformably connected to the flanges 53 and 54 that are continuous with the front and rear edges of the opening 40 of the storage portion 31 via the bent hinge portions 68 and 68, and this support is provided. The inner door planned portions 66 and 66 are deformably connected to the portions 65 and 65 via the hinge portions 67 and 67, and the lid to the opening portion 40 side of the storage portion 31 at the bent hinge portions 68 and 68 is provided. The support portions 65 and 65 are overlapped with the flanges 53 and 54 by the reverse bending of the portions 32 and 32, the hinge portions 67 and 67 are located in the storage portion 31, and the planned inner door portions 66 and 66 cover the opening 40. Thus, the case body 14 in which the inflator 15 and the folded airbag 16 are stored in the storage portion 31 and covered with the lid portions 32 and 32 can be easily configured, and can be manufactured at a lower cost.

  Therefore, the airbag device 10 which is a shell packing airbag module can be realized more inexpensively and easily.

  Further, since the hinge portion 67 is formed at a position extending laterally with respect to the storage portion 31 when the inner portion 22 is molded, the shape of the hinge portion 67 restricts the molding die configuration for molding the inner portion 22. The necessary hinge performance can be set easily without receiving it.

  Further, the convex portions 59 provided on the flanges 53 and 54 are inserted into the insertion openings 72 of the support portion 65 by the reverse bending of the lid portion 32 toward the opening portion 40 side of the storage portion 31 at the bending hinge portion 68. Since it is substantially flush with the support portion 65, the inverted and bent flanges 53 and 54 can be easily aligned with the support portion 65, and the surface to which the outer portion 21 is fixed (the welding surface of the outer portion 21) is easy. Can be formed.

  Further, when inserting the jigs J1 and J2 into the jig insertion holes 42 and 43 provided in the inner part 22 and vibration welding the outer part 21, the inner door planned parts 66 and 66 are supported by the jigs J1 and J2. As a result, the outer part 21 and the inner part 22 can be more reliably brought into close contact with each other and can be fixed easily and reliably.

  Moreover, by assembling jigs J1 and J2 in a cross shape (lattice form), the pressure applied from the outer part 21 side (upper side) during vibration welding is effectively dispersed to bend (bend) the jigs J1 and J2. Can be more reliably suppressed, and the lid portion 32 can be more reliably supported.

  Furthermore, a relatively thin jig J2 is used in the front-rear direction in which the bending moment is relatively small because the distance is relatively small, and the bending moment is relatively large because the distance is relatively large. By using a relatively thick and strong jig J1 in the direction, it is possible to secure the strength against bending of the jigs J1 and J2, and the jig J2 inserted through the notch opening 86 of the hinge portion 67 is relatively Therefore, the opening area of the notch opening 86 can be suppressed, and the strength of the hinge portion 67 can be secured.

  Then, by temporarily fixing the lid portion 32 to the storage portion 31 by the temporary fixing portions 78 and 83 in a state where the lid portion 32 is inverted and bent toward the opening 40 side of the storage portion 31, the outer portion 21 is attached to the inner portion 22. When fixing (vibration welding), it is not necessary to hold the lid portion 32, workability is good, and manufacturability can be further improved.

  Next, a second embodiment will be described with reference to FIGS. In addition, about the structure and effect | action similar to said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the present embodiment, the front side surface portion 37 of the storage portion 31 of the inner portion 22 is inclined at an acute angle with respect to the lid portion 32 (predetermined door portion 81), the outer portion 21 and the bottom surface portion 39. Is a front side portion 87 that is a side (one portion) including the front side surface portion 37 and a side that does not include the front side surface portion 37 at the positions on the front side of the side surface portions 35 and 36 and the bottom surface portion 39 of the storage portion 31 ( It is divided into a rear side portion 88 that is another portion), and the front side portion 87 and the rear side portion 88 are integrally connected by a turning hinge portion 89 so as to be rotatable.

  The front side surface portion 37 is inclined acutely downward with respect to the lid portion 32 (predetermined door portion 81) and the outer portion 21 toward the front, which is one direction of rotation by the rotation hinge portion 89. The upper end of the bottom surface 39 is inclined at an acute angle upward toward the rear, which is the other direction of rotation by the rotation hinge 89.

  Further, the front side portion 87 and the rear side portion 88 are divided by a virtual plane P along the angle θ that is less than or equal to the right angle with respect to the lid portion 32 at a position closer to the front side than the holding portion 45, that is, closer to the front side portion 37. ing. Accordingly, the front side portion 87 includes a front side portion 37, a front side portion that is one side of the plane P of the side surface portions 35, 36, a front side portion of the bottom surface portion 39, a front side lid portion 32, and front side portions of the flanges 51, 52. The rear side portion 88 includes a rear side portion 38, a rear side portion that is the other side of the plane P of the side surface portions 35, 36, a rear side portion including the holding portion 45 of the bottom surface portion 39, and a rear lid portion 32. And rear portions of the flanges 51, 52.

  Further, the front side portion 87 and the rear side portion 88 are provided with connection fixing portions 91 and 92 that are connected to each other. The connecting and fixing portion 91 provided on the front side portion 87 is, for example, a position facing the front end portion of the side surface portions 35 and 36 in the front side portion 87, that is, the rear side portion 88 of the side surface portions 35 and 36 (divided by the plane P). The connecting and fixing portion 92 provided in the rear side portion 88 is formed on the rear end portion of the side surface portions 35 and 36 in the rear side portion 87, that is, on the front side portion 87 of the side surface portions 35 and 36, for example. They are formed at opposing positions (positions divided by the plane P). One of these connection fixing portions 91 and 92 is press-fitted into the other along the front-rear direction, which is the rotation direction by the rotation hinge portion 89, and is fixed to each other.

  The other structure of the inner portion 22 is the same as that of the first embodiment.

  When the inner portion 22 is formed, the vertical direction, which is the thickness direction of the lid portion 32, is formed as the mold opening direction, that is, the drawing direction (arrow B direction). At this time, as described above, the inner part 22 can be rotated in the front-rear direction by the rotating hinge part 89 between the front side part 87 including the front side part 37 and the rear side part 88 not including the front side part 37. By adopting the connecting shape, the front side portion 87 is rotated in advance by the rotation hinge portion 89 with respect to the rear side portion 88, and the angle of the front side surface portion 37 is relative to the direction in which the inner portion 22 is pulled (arrow B direction). Thus, the molds D1 and D2 can be designed so as not to be undercut (FIG. 7). For example, it is not necessary to use an expensive mold having a structure such as a movable piece corresponding to undercut, and the inner portion 22 and the case body 14 can be used. Can be manufactured at a lower cost. The inner part 22 molded using the molding dies D1 and D2 is fixed to each other by the connecting and fixing parts 91 and 92 by rotating the front side part 87 toward the rear side part 88 by the rotating hinge part 89. Thus, the inner portion 22 is the same as that in the first embodiment.

  In particular, the airbag device 10 in which the front side surface portion 37 is inclined at an acute angle toward the front lower side with respect to the lid portion 32 (predetermined door portion 81) and the outer portion 21 as described above is an upper portion of the instrument panel portion 13. It can be suitably used as a so-called top mount type airbag device mounted at a position facing the front window glass.

  In each of the above-described embodiments, the lid portion 32 covers the inner door planned portion 66 with an area covering the opening 40 (substantially equal to the opening 40) according to the shape of the vehicle on which the airbag device 10 is mounted. In this case, only one lid portion 32 may be provided for the storage portion 31.

  Next, a third embodiment will be described with reference to FIGS. In addition, about the structure and effect | action similar to said each embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the airbag device 10 of the present embodiment, the inflator 15 is formed in a substantially columnar shape, and the case body 14 has only one planned door portion 81, which is a single flap.

  The outer portion 21 has a tear line 24 formed in a U shape by a first tear line 24a and second tear lines 24b and 24b extending linearly from both ends of the first tear line 24a to the front end. A portion surrounded by the tear line 24 is one outer door planned portion 26, and the outer side of the tear line 24 is an outer outer portion 25.

  Further, the inner portion 22 has a flange portion 34 of the storage portion 31 formed in a U-shape by the left side flange 51, the right side flange 52 and the rear side flange 54, and one lid portion 32 is formed on the front side surface of the storage portion main body 33. The upper end portion of the portion 37 is integrally connected via a hinge portion 67.

  The flanges 51, 52, and 54 are integrally continuous with each other, and the upper surfaces facing the outer portion 21 are substantially flush with each other. On the upper surfaces of the flanges 51, 52, 54, welding ribs 95 for vibration welding are formed in a lattice shape before the outer portion 21 is welded (when the inner portion 22 is molded). Further, a locking hole 96 for temporarily fixing the lid 32 is opened at the center of the rear flange 54 in the left-right direction at the rear edge of the opening 40, that is, at the upper end of the rear side 38. Has been.

  Further, the storage portion 31 is a jig J3 (see FIG. 5) used for vibration welding between the inner portion 22 and the outer portion 21 at the upper end of the side surface portions 35, 36 of the storage portion main body 33, that is, in the vicinity of the opening 40. 10) is a square hole-shaped jig insertion hole 97 that is inserted from the outside to the inside of the storage portion 31 (storage portion main body 33), and is located at the upper end portion of the rear side surface portion 38, that is, in the vicinity of the opening portion 40. The jig J4 (FIG. 10) used for vibration welding between the inner portion 22 and the outer portion 21 is inserted into the storage portion 31 (storage portion main body 33) from the outside to the inside. 98 is opened.

  Here, as shown in FIG. 10, the jig J3 is formed in a straight bar shape by a member such as metal, and is inserted into the left and right through the jig insertion holes 97, 97 of the side surface portions 35, 36. It has become so. The jig J3 is formed with a locking opening J3a. Each jig J4 is formed in a straight bar shape thicker than the jig J3 by a member such as a metal, and the storage portion main body 33 (storage portion 31) is inserted from the jig insertion holes 98 and 98 of the rear side surface portion 38. Are inserted inwardly toward the center in the front-rear direction. A protruding portion J4a that is inserted and locked into the locking opening J3a protrudes from the tip of these jigs J4. And these jigs J3, J4 are arranged in a planar shape at the position of the opening 40 at the bottom of the lid 32 by inserting and locking the protrusion J4a into the locking opening J3a and being combined in a lattice shape, The lid portion 32 is supported from below with respect to pressurization from above during vibration welding.

  A holding portion 101 that holds the inflator 15 is recessed downward on the bottom surface 39 of the storage portion main body 33 of the storage portion 31. The holding portion 101 is formed in a semi-cylindrical shape along the outer peripheral surface of the inflator 15, and has a longitudinal shape along the left-right direction. The holding portion 101 has an opening 102 through which the connector portion of the inflator 15 is exposed. Furthermore, both left and right end portions of the holding portion 101 communicate with circular insertion openings 103 and 103 that penetrate the side surface portions 35 and 36. The inflator 15 is inserted into the holding portion 101 from one side of the insertion opening 103 to the other side. Therefore, the upper edge portions of the insertion openings 103 and 103 of the side surface portions 35 and 36 serve as pressing portions 104 and 104 that press the inflator 15 from above and prevent it from coming off.

  The lid portion 32 is formed by an inner door planned portion 66 and a hinge portion 67.

  The planned inner door portion 66 covers the airbag 40 stored in the opening 40 and the storage portion 31 in a state where the lid portion 32 is inverted and bent toward the opening 40 of the storage portion 31 at the position of the hinge portion 67. It has become. The planned inner door portion 66 has a plate shape extending in a planar shape along a direction orthogonal to the deployment direction of the airbag 16, and is formed in an area covering the opening 40 (substantially equal to the opening 40). The planned door portion 81 is formed by being fixed to the back side of the planned outer door portion 26. Further, a locking projection 106 inserted and locked in the locking hole 96 is provided in the thickness direction at the central portion of the inner door planned portion 66 on the side opposite to the hinge portion 67 (on the side opposite to the storage portion 31). ing. The locking projection 106 has a claw portion 106a protruding forward. Then, by the locking projection 106 and the locking hole 96, the lid 32 is reversed and bent to the opening 40 side of the storage portion 31 at the position of the front edge of the opening 40. A temporary fixing portion 107 that is temporarily fixed to the storage portion 31 is configured. Further, on the planned inner door portion 66, welding ribs 109 for vibration welding are formed in a lattice shape before the outer portion 21 is welded (when the inner portion 22 is molded). The welding rib 109 is formed on the back side of the inner door planned portion 66 when the inner portion 22 is molded, that is, on the side opposite to the outer portion 21 (anti-outer door planned portion 26), and the lid portion 32 is formed on the front edge of the opening 40. In the state of being inverted and bent toward the opening 40 side of the storage part 31 at the position of the part, it becomes substantially flush with the welding ribs 95 of the flanges 51, 52, 54, and on the back side of the outer door planned part 26 of the outer part 21 It is designed to be fixed.

  The hinge portion 67 is curved in a U shape to flexibly connect the front edge portion of the opening 40, that is, the upper end portion of the front side surface portion 37 (the storage portion 31 (storage portion main body 33)) and the planned inner door portion 66. It is linked to. Further, the hinge portion 67 bulges upward when the inner portion 22 is molded, and the lid portion 32 (the planned inner door portion 66) at the position of the front edge portion of the opening 40 (the rear edge portion 67a on the storage portion 31 side). In the state of being inverted and bent to the storage portion 31 (opening portion 40) side, it is inserted into the opening portion 40 and positioned in the storage portion 31 (storage portion main body 33) in the vicinity of the upper ends of the side surface portions 37 and 38, and below That is, it is curved so as to bulge toward the stored airbag 16 side. Further, the hinge portion 67 is continuous between both sides of the inner door planned portion 66 along the front edge portion of the opening portion 40, that is, the upper end portion of the front side surface portion 37.

  When assembling the case body 14, first, the inflator 15 is inserted into the holding portion 101 between the insertion openings 103 and 103 with respect to the preformed inner portion 22, and both end portions are held by the holding portions 104 and 104. The airbag 16 folded into a predetermined shape is fixed to the bottom surface portion 39, and the inflator 15 and the airbag 16 are stored in the storage portion 31 (storage portion main body 33).

  Next, the jig J3 is inserted into the jig insertion holes 97, 97 of the inner portion 22 from the outside of the storage portion 31 (storage portion main body 33), and further, the jig insertion holes 98 are respectively cured. J4 is inserted from the outside of the storage unit 31 (storage unit main body 33), and the protrusion J4a at the tip of the jig J4 is inserted and locked into the locking opening J3a of the jig J3. Assemble J4 in a “Π” shape.

Further, the lid portion 32 of the inner portion 22 is folded back and bent toward the opening 40 side of the storage portion 31 at the position of the rear edge portion 67a of the hinge portion 67, and the claw portion 106a of the locking projection 106 is By inserting and locking in the locking hole 96, the lid portion 32 is temporarily fixed to the storage portion 31 side by the temporary fixing portion 107. In this state, the upper surface of the flanges 51, 52, 54 (the upper surface of the welding rib 95) and the upper surface of the inverted inner door planned portion 66 (the upper surface of the welding rib 109) are substantially flush with each other. The hinge surface 67 is positioned at the front edge of the opening 40 in the storage portion 31 (storage portion main body 33 ), and the inner door planned portion 66 is the opening portion 40 of the opening 40. Cover the top.

  Thereafter, welding is performed by vibration welding that causes the inner part 22 to vibrate relatively with respect to the outer part 21 using a vibration welding machine in a state in which the outer part 21 separately formed in advance is overlapped with the inner part 22. When the ribs 95 and 109 are melted in a dimension along the protruding direction, that is, the vertical direction, the inner outer portion 74 is welded and joined to the outer outer portion 25 to form the outer portion 75, and the inner door planned portion 66 is the outer door. A planned door portion 81 is formed by welding to the planned portion 26. In this way, the airbag device 10 in which the inflator 15 and the airbag 16 are stored and held in the storage portion 31 and covered with the planned door portion 81 is completed.

  Then, the airbag device 10 attached to the instrument panel portion 13 operates in the same manner as in each of the above embodiments, and when the gas flows into the airbag 16 and bulges, that is, inflates and deploys, the airbag 16 becomes the case body 14. Due to the expansion force expanding inside, the planned door portion 81 is pushed up via the planned inner door portions 66 before and after the inner portion 22. Then, by this force, the first tear line 24a and the second tear line 24b of the outer portion 21 are broken, that is, the tear line 24 that is a weak portion of the outer portion 21 is broken over the entire length, and the outer door planned portion 26 is A door portion is formed by being separated from other portions, and the planned door portion 81 rotates or expands as a door portion while the hinge portion 67 is extended, thereby forming an inflation outlet of the airbag 16.

  In this manner, the inner door planned portion 66 is deformably connected to the storage portion 31 via the hinge portion 67 continuous with the front edge portion of the opening portion 40 of the storage portion 31, and the position of the front edge portion of the opening portion 40 ( The hinge portion 67 is positioned inside the storage portion 31 by the reverse bending of the storage portion 31 toward the opening portion 40 at the rear edge portion 67a) of the hinge portion 67, and the planned inner door portion 66 covers the opening portion 40. The case body 14 in which the inflator 15 and the folded airbag 16 are accommodated in the accommodating portion 31 and covered with the lid portion 32 can be more simplified and manufactured at a lower cost. Therefore, the airbag device 10 which is a shell packing airbag module can be realized more inexpensively and easily.

  In particular, by providing the lid 32 only on one edge (front edge) of the opening 40 of the storage part 31, it can be suitably used as a so-called single flap type airbag device.

  Further, when the jigs J3 and J4 are inserted into the jig insertion holes 97 and 98 provided in the inner part 22 and the outer part 21 is vibration welded, the inner door planned part 66 is supported by the jigs J3 and J4. In addition, the outer part 21 and the inner part 22 can be more securely brought into close contact with each other and can be fixed easily and reliably.

  In addition, by assembling the jigs J3 and J4 in a cross shape, the pressure applied from the outer part 21 side (above) during vibration welding is effectively dispersed, and the bending (deflection) of the jigs J3 and J4 is more reliably performed. While being able to suppress, the cover part 32 can be supported more reliably.

  Furthermore, since the jig J4 is assembled only from the rear side that is the side opposite to the anti-lid portion 32 with respect to the jig J3, it is not necessary to provide a notch opening for inserting the jig into the hinge portion 67, and the hinge portion 67 It can be easily set according to the desired strength.

  The outer portion 21 is fixed to the inner portion 22 by temporarily fixing the lid portion 32 to the storage portion 31 by the temporary fixing portion 107 in a state where the lid portion 32 is inverted and bent toward the opening portion 40 side of the storage portion 31 ( It is not necessary to hold the lid portion 32 during vibration welding), workability is good, and manufacturability can be further improved.

  In the third embodiment, a pair of front and rear cover portions 32 may be provided with respect to the storage portion 31.

  Further, in each of the above embodiments, the case body 14 may further include a skin body on the surface side of the outer portion 21.

  Furthermore, the airbag device 10 can be used not only as a passenger seat but also as an arbitrary airbag device such as a driver seat.

  The present invention can be suitably used, for example, as an airbag provided in an instrument panel for a passenger on the passenger seat.

10 Airbag device
14 Case body
15 Inflator
16 airbag
21 Outer part
22 Inner part
31 compartment
32 Lid
37 Front side as side
40 opening
42, 43, 97, 98 Jig insertion hole
53 Front flange as support receiving part
54 Rear flange as support receiving part
59 Convex
65 Support
66 Inner door planned part
67 Hinge
68 Bending hinge
72 Insertion opening
78, 83, 107 Temporary fixing part
89 Rotating hinge
J1, J2, J3, J4 Jig

Claims (5)

A case body of an airbag device that houses a folded airbag and an inflator that supplies a gas for inflating and deploying the airbag,
The folded airbag and the inflator are held inside, a storage portion provided with an opening through which the inflated airbag protrudes, and extended from an edge of the opening of the storage portion, An inner part including a lid part that is bent toward the opening part and is fixed to the storage part at a position that covers the airbag at least a part of which is stored in the storage part;
An outer portion fixed to the inner portion so as to cover at least the position of the lid portion ,
The storage portion includes a support receiving portion continuous to an edge portion of the opening,
The lid is
A deformable bending hinge portion continuous with the support receiving portion;
A support portion that is coupled to the support receiving portion via the bending hinge portion and is at least partially overlapped with the support receiving portion by bending the opening portion of the storage portion at the bending hinge portion;
An inner door planned portion that covers the opening and is deployed by the deployment pressure when the airbag is inflated;
The inner door planned portion and the support portion are connected in a deformable manner, and the hinge portion is provided in the storage portion by bending the storage portion at the opening side of the storage portion. A case body of an airbag device . The support portion includes an insertion opening,
The support receiving portion includes a convex portion that is inserted into the insertion opening by bending the lid portion toward the opening portion of the storage portion at the bending hinge portion and is substantially flush with the support portion. The case body of the airbag device according to Item 1 . The storage portion includes a side surface portion inclined at an acute angle with respect to the lid portion,
3. The air according to claim 1, wherein the inner portion includes a rotation hinge portion that rotatably connects a side including the lid portion and the side surface portion and a side not including the side surface portion. Case body of bag device. The outer part is fixed to the inner part by vibration welding,
The airbag according to any one of claims 1 to 3 , wherein the inner portion includes a jig insertion hole for inserting a jig that supports the inner door planned portion when the outer portion is vibration welded. The case body of the device. Inner portion, the lid portion to the claims 1 to 4 any one wherein further comprising a temporary fixing portion for temporarily fixed to the housing portion in a state of being bent lid to the opening side of the housing portion The case body of the airbag device.

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