JP2010042705A - Air bag device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of parts when an inflator is mounted to an air bag and to simplify mounting work. <P>SOLUTION: The air bag 2 is provided with a deployment part 26 inflated/deployed by a gas delivered by the inflator 10; and an inflator storage part 25 for storing the inflator 10. In the inflator storage part 25, a tongue piece-like seal piece 29 is projected to one side part in the longitudinal direction, is intruded into a notch 28 formed on a base part of the inflator storage part 25, and is wound on the inflator storage part 25 near a rear end part 10b of the inflator 10. A mounting bolt 11 is provided near a rear end part 10b of the inflator 10, and when the seal piece 29 is wound, the mounting bolt 11 is inserted/penetrated to bolt insertion holes 29a, 30a and it is fastened/fixed to the mounting bracket at a vehicle body side. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an airbag apparatus including an inflator that discharges gas into an airbag.

  An airbag device mounted on an automobile or the like is configured to inflate and deploy an airbag with gas generated by an inflator in an emergency such as a collision. Conventionally, as this type of airbag device, a metal pipe member provided with a gas discharge port is attached to the tip of an inflator, the pipe member is inserted into the inlet portion of the airbag, and the rear end of the inlet portion. The pipe member is fixed to the airbag using a clamp mounted on the vicinity, and the inflator itself is also fixed to the inner panel of the vehicle body using a mounting bracket (see, for example, Patent Document 1).

Japanese Patent No. 4019927

  However, the conventional airbag device has a very complicated mounting structure in which a pipe member is provided on the inflator, the pipe member is fixed to the airbag by a clamp, and the inflator itself is also fixed to the vehicle body by a mounting bracket. Therefore, the number of parts is large when attaching the inflator, and the attaching operation is complicated.

  In view of the above, an object of the present invention is to reduce the number of parts when the inflator is attached to the airbag and to simplify the attaching operation.

  The invention according to claim 1 has an inflator that discharges gas from a gas discharge port into a bag-shaped airbag to deploy a deployment portion of the airbag, and the deployment of the inflator housing portion that accommodates the entire inflator An opening for inserting the inflator into the inflator accommodating portion is provided in the vicinity of the end opposite to the gas discharge port of the inflator, and the inflator accommodating portion An extension part including at least the opening part is provided on the part so as to integrally extend outward from the inflator housing part, and the extension part is overlaid on the inflator housing part to close the opening part, An inflator is attached to the airbag.

  Invention of Claim 2 is an airbag apparatus of Claim 1, Comprising: Between the said inflator accommodating part of the position corresponding to the said extension part, and the said expansion | deployment part, the mutual gas distribution | circulation is carried out. A shielding part for shielding is provided, and a cylindrical part surrounding the vicinity of the end part on the opposite side to the gas discharge port of the inflator is formed.

  A third aspect of the present invention is the airbag device according to the first or second aspect, wherein the inflator accommodating portion is continuous over the entire length in the longitudinal direction with respect to the deployed portion.

  Invention of Claim 4 is the airbag apparatus of Claim 2, Comprising: The said shielding part is a space | gap which spaces apart the said inflator accommodating part and the said expansion | deployment part, The said extension part enters into this space | gap It is characterized by that.

  Invention of Claim 5 is an airbag apparatus of any one of Claim 1 thru | or 3, Comprising: The said extension part is provided in the edge part vicinity on the opposite side to the gas discharge port of the said inflator, and this The extending portion is overlapped along the longitudinal direction of the inflator accommodating portion.

  Invention of Claim 6 is an airbag apparatus of Claim 3, Comprising: The said extension part is provided over the full length of the said inflator accommodating part, and the gas discharge port of the said inflator in the base side of this extension part is provided. A sealing portion is provided at a corresponding position, and the opening is formed in the vicinity of the end opposite to the gas discharge port of the inflator.

  According to the first aspect of the present invention, the inflator is inserted and arranged in the inflator accommodating portion communicating with the deploying portion of the airbag, and the extending portion having an opening for inserting the inflator into the inflator accommodating portion is provided in the inflator accommodating portion. Since the opening is closed by overlapping the part, it is not necessary to attach the inflator directly to the vehicle body, it is only necessary to attach the inflator housing with the inflator inserted to the vehicle body, reducing the number of parts when attaching the inflator Thus, the mounting structure can be simplified and the mounting workability is improved.

  According to the second aspect of the invention, when the gas is discharged into the airbag and the deployment chamber is deployed, the tubular portion restricts the swinging of the inflator and stabilizes the deployment posture of the airbag. Further, since the flow of the gas in the developing chamber toward the inflator accommodating portion, particularly toward the extending portion, is shielded by the shielding portion, the sealing performance with respect to the opening provided in the extending portion is improved.

  According to the invention of claim 3, when the gas is discharged into the airbag and the deployment chamber is deployed, the deployment chamber is supported over the entire length in the longitudinal direction of the inflator housing portion. Is stabilized.

  According to the invention of claim 4, the extension portion can be wound around the inflator accommodating portion a plurality of times by double or triple by allowing the extension portion to enter the gap, and the opening portion provided in the extension portion It is possible to further improve the sealing performance against.

  According to the invention of claim 5, since the length of the extending portion can be set longer according to the length of the inflator accommodating portion, the pressure resistance when the airbag is deployed is improved.

  According to invention of Claim 6, the pressure | voltage resistance of the gas discharge port vicinity of an inflator can be improved with a sealing part.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing a main part of an airbag apparatus according to the first embodiment of the present invention. Here, the case where the airbag apparatus is implemented as a curtain airbag apparatus housed above the side surface of the vehicle interior is illustrated.

  As is generally known, curtain airbag devices are deployed to cover the side of the interior of an automobile, that is, inside the front door glass and rear door glass, in the event of an emergency such as a side collision or rollover, and prevent the occupant from side collisions. Protect.

  Such a curtain airbag device has a shape that covers the front door glass 101 and the rear door glass 102 shown in FIG. 2 in a state in which the deployment portion 26 of the airbag 2 is deployed, and the vehicle longitudinal direction dimension is the vertical direction. Longer than dimensions.

  Moreover, the airbag 2 of the above-described embodiment is formed into a bag shape by sewing the peripheral edges of the two base fabrics with the stitching portion 24.

  FIG. 3 is a view seen from the passenger compartment centering on the center pillar 103 at the upper part of the passenger compartment in a state where the airbag 2 is housed, and FIG. 4A is a cross-sectional view taken along the line BB in FIG. (B) is CC sectional drawing of FIG.

  The deployment part 26 of the airbag 2 is elongated in the front-rear direction, for example, by folding it in the vertical direction, and is attached along the vehicle interior side of the roof side rail. Note that reference numeral 104 in FIG. 4 denotes an inner panel of a roof side rail configured in a closed cross section, and reference numeral 105 denotes an attachment bracket for attaching the airbag device to the vehicle body.

  Further, in FIG. 4, reference numeral 106 denotes a roof lining, and the deployed portion 26 of the folded airbag 2 is stored behind the side edge of the roof lining 106. When the airbag 2 is deployed, the inflating airbag 2 pushes down the side edge of the roof lining 106 to create a gap, and the airbag 2 is deployed downward while widening the gap. The roof lining 106 is omitted in FIG.

  As shown in FIG. 1, the airbag 2 is integrally formed so that the inflator accommodating portion 25 protrudes upward at the upper edge of the substantially central portion in the front-rear direction (left-right direction in FIG. 1) of the deployment portion 26. I have. Then, the inflator 10 is inserted and disposed in the inflator storage portion 25. Reference numeral 40 in FIG. 1 denotes a signal line. The signal line 40 is once inserted into the inflator housing 25 together with the inflator 10 and then pulled out from a hole formed at an appropriate position of the inflator housing 25.

  The inflator 10 generates gas instantaneously in an emergency, and supplies the gas into the deployment part 26 of the airbag 2 to inflate and deploy the airbag 2. The inflator 10 is formed in an elongated cylindrical shape whose longitudinal direction (axial direction) is the longitudinal direction of the vehicle, and mounting bolts 11 as fixtures protrude from the circumferential side surface of the inflator 10 as shown in FIG. Then, the mounting bolt 11 passes through the airbag 2 and the mounting bracket 105 and is screwed to the weld nut 12 on the back surface of the side rail inner panel 104.

  Here, in the present embodiment, as shown in FIG. 1, the inflator storage portion 25 is integrated so as to protrude from the side edge of the development portion 26, and corresponds to the shape of the substantially cylindrical inflator 10 in FIG. 1. The shape is long in the left-right direction.

  The inflator 10 has a gas discharge port 10a at the left end portion in FIG. 1, and is connected to a position corresponding to the gas discharge port 10a as a communication portion that connects the inflator accommodating portion 25 and the deployment portion 26. A mouth 27 is provided. Thereby, the inflator accommodating portion 25 corresponds to the rear end portion 10b of the inflator 10 opposite to the gas discharge port 10a, while the inflator accommodating portion 25 and the developing portion 26 are integrated at a portion corresponding to the communication port 27. At a position where the inflator is accommodated, a notch 28 is formed as a gap between the inflator accommodating portion 25 and the developing portion 26, and these are separated from each other. The notch 28 is open on the right edge portion side of the inflator accommodating portion 25 in FIG.

  And the above-mentioned inflator accommodating part 25 is a seal | sticker as a tongue-shaped extension part extended to the outward continuously from the inflator accommodating part 25 in the position corresponding to the gas discharge port 10a side of the inflator 10. A piece 29 is provided. The width dimension h of the seal piece 29 is substantially the same as or smaller than the width dimension H of the notch 28 described above.

  The sealing piece 29 described above is provided with a folded-back portion 30 by further extending only one of the two base fabrics constituting the airbag 2 (the front side in FIG. 1) at the tip thereof. . Accordingly, an opening 31 is formed at the tip of the other of the two base fabrics (the back side of the paper in FIG. 1), in which the space in the inflator accommodating portion 25 opens to the outside.

  The inflator 10 is inserted into the inflator accommodating portion 25 through the opening 31. That is, the sealing piece 29 described above extends integrally outward from the inflator accommodating portion 25 including the opening 31.

  Further, the seal piece 29 includes a bolt insertion hole 29a for inserting the mounting bolt 11 protruding from the inflator 10 and penetrating through the inflator accommodating portion 25, and a bolt insertion hole 30a provided in the folded portion 30. Yes.

  2A is a cross-sectional view taken along the line A-A in FIG. 2 while the seal piece 29 described above is inserted into the notch 28 so as to be bent from the state of FIG. The inflator 10 is wound around the inflator accommodating portion 25 at a position corresponding to the periphery of the rear end portion 10b of the inflator 10. At this time, the mounting bolt 11 is inserted into the bolt insertion hole 29a and the bolt insertion hole 30a.

  As shown in FIG. 2B, the opening 31 can be closed by winding the seal piece 29 around the inflator accommodating portion 25. At this time, the opening 31 is wound so as to be positioned inside the winding. The part 31 can be blocked more reliably. Thereby, the sealing performance with respect to the opening portion 31 is enhanced, and it is possible to cope with higher pressure holding in the airbag 2.

  Here, as shown in FIG. 2B, the mounting bolt 11 is inserted into the bolt insertion hole 25a of the inflator accommodating portion 25 and protrudes to the outside. The mounting bolt 11 is connected to the bolt insertion holes 29a and 30a described above. 4B, the nut 12 is inserted into the mounting bracket 105 and fastened as shown in FIG. Further, as shown in FIG. 4A, the mounting bracket 105 is fixed to the inner panel 104 on the vehicle body side using a fastener 32 such as a fastener.

  In the airbag 2 according to the first embodiment, the inflator 10 is inserted and arranged in the inflator accommodating portion 25 communicating with the deploying portion 26 of the airbag 2, and the inflator 10 is inserted into the inflator accommodating portion 25. A seal piece 29, which is an extending portion having the opening 31, is overlapped with the inflator housing portion 25 so as to close the opening 31.

  For this reason, it is not necessary to attach the inflator 10 itself directly to the vehicle body, and the inflator accommodating portion 25 with the inflator 10 inserted may be attached to the inner panel 104 of the vehicle body. Therefore, the number of parts when attaching the inflator 10 is reduced. The mounting structure can also be simplified and the mounting workability can be improved.

  At this time, in this embodiment, the mounting bolt 11 projected from the inflator 10 is inserted into the bolt insertion holes 29a and 30a of the seal piece 29 superimposed on the inflator accommodating portion 25 and fixed to the inner panel 104 of the vehicle body. Therefore, when the airbag device is attached to the vehicle body, there is no need to use an attachment component such as a clamp as a separate component, and therefore the operation of mounting the airbag device on the vehicle body can be easily performed with a simple structure.

  Note that a mounting bolt that protrudes from the mounting bracket 105 on the vehicle body side may be fastened to a screw hole that is provided on the inflator 10 side.

  Further, according to the first embodiment, the opening 31 is provided at a position corresponding to the opposite side of the gas discharge port 10 a of the inflator 10. Thereby, as shown in FIG. 1, the inflator accommodating portion 25 is formed with a communication port rear portion 33 on the opposite side of the development portion 26 with the communication port 27 interposed therebetween, and passes through the communication port 27 from the gas discharge port 10a. The discharge pressure of the gas discharged toward the expanding portion 26 is received, and the pressure resistance in the vicinity of the gas discharge port 10a is improved.

  At this time, the seal piece 29 is provided at a position corresponding to the opposite side of the gas discharge port 10a of the inflator 10, and the seal piece 29 is wound around the inflator accommodating portion 25 as shown in FIG. Thereby, the accommodation property of the inflator 10 can be obtained without impairing the pressure resistance on the gas discharge port 10a side.

  Further, in the present embodiment, a notch 28 that is a gap is provided between the inflator accommodating portion 25 and the developing portion 26 at a position corresponding to the opposite side of the gas discharge port 10 a of the inflator 10, and a seal piece 29 is provided in the notch 28. Is inserted. As a result, the seal piece 29 can be wound around the inflator accommodating portion 25 a plurality of times, double or triple, and the opening 31 can be more reliably closed to improve the sealing performance. Effective for retention.

  At this time, since the notch 28 is open on the end edge side of the inflator accommodating portion 25, the insertion and winding of the seal piece 29 is easy.

  In addition, the above-described notch 28 provides a shielding portion that shields the flow of gas between the inflator accommodating portion 25 and the deployment portion 26 at a position corresponding to the seal piece 29. Furthermore, a cylindrical portion surrounding the vicinity of the rear end portion 10b of the inflator 10 on the side opposite to the gas discharge port 10a is formed in the inflator housing portion 25 by overlapping (wrapping) the seal piece 29 on the inflator housing portion 25. It will be done.

  Thereby, when gas is discharged into the airbag 2 and the deployment chamber 26 is deployed, the swinging of the inflator 10 is restricted by the above-described tubular portion, and the deployment posture of the airbag 2 is stabilized. Further, since the flow of the gas in the development chamber 26 toward the inflator accommodating portion 25, particularly toward the seal piece 29, is shielded by the above-described shielding portion (notch 28), the sealing property with respect to the opening 31 provided in the seal piece 29. Will improve.

  Moreover, in this embodiment, since the folding | returning part 30 which obstruct | occludes the opening part 31 is provided in the seal piece 29, the opening part 31 can be blocked | closed more reliably.

  FIG. 5 is a front view showing a main part of the airbag apparatus corresponding to FIG. 1 according to the second embodiment of the present invention. In the second embodiment, a through hole 34 that is a gap is provided instead of the notch 28 shown in FIG.

  That is, the seal piece 29 is inserted into the through hole 34 and overlapped with the inflator accommodating portion 25 at a position corresponding to the periphery of the rear end portion 10b of the inflator 10 in the same manner as in FIG. 2B of the first embodiment. Wrap it like this.

  In the second embodiment, since the seal piece 29 is inserted into the through-hole 34, the winding state is more reliably maintained, the inflator 10 is fixed and held more stably, and the sealing performance is further improved. it can.

  FIG. 6 is a front view showing a main part of the airbag apparatus corresponding to FIG. 1 according to the third embodiment of the present invention. In the third embodiment, the notch 28 in FIG. 1 is not provided, and the inflator accommodating portion 25 is continuous with the deploying portion 26 over the entire length.

  At this time, a stitching portion 35 is provided as a shielding portion that blocks communication between the inflator housing portion 25 and the deployment portion 26 at a position corresponding to the side opposite to the gas discharge port 10a of the inflator 10. Therefore, a communication port 27 that communicates the inflator housing portion 25 and the deployment portion 26 is formed at a position corresponding to the gas discharge port 10 a of the inflator 10.

  In the third embodiment, the folded portion 30 is folded in the vicinity of the opening 31 corresponding to the base end portion and overlapped with the seal piece 29. At this time, the bolt insertion hole 29a and the bolt insertion hole 30a are aligned with each other. It becomes a state. In this state, the overlapped seal piece 29 is overlapped on the inflator accommodating portion 25 so as to be bent to the back side in FIG. 6, thereby inserting the mounting bolt 11 into the bolt insertion holes 29a and 30a.

  Thereafter, the airbag apparatus is attached to the vehicle body by fastening the nut 12 to the attachment bracket 105 in the same manner as in FIG.

  According to the third embodiment described above, since the inflator accommodating portion 25 is continuous over the entire length with respect to the deploying portion 26, the notch 28 as in the first embodiment shown in FIG. 1 is provided. In comparison with the case, when the gas is discharged into the airbag 2 and the deploying portion 26 is deployed, the deploying portion 26 is supported over the entire length in the longitudinal direction of the inflator accommodating portion 25. The deployment posture is stabilized.

  The effect of stabilizing the deployed posture is the same in the second embodiment shown in FIG. 5 because the through hole 34 is different from the notch 28 of the first embodiment. Obtainable.

  In addition, by providing a stitching portion 35 as a shielding portion that blocks communication between the inflator accommodating portion 25 and the deployment portion 26, the inflator accommodating portion 25 surrounds the periphery on the rear end portion 10b side of the inflator 10. A shaped part is formed. Thereby, the expansion | deployment part 26 can obtain rocking | swiveling attitude | position which a rock | fluctuation was controlled when expanding and expand | deploying.

  In addition, since the flow of the inflation gas from the deployment portion 26 to the inflator accommodating portion 25 can be regulated by the stitching portion 35, the load on the seal piece 29 that closes the opening portion 31 can be reduced.

  FIG. 7A is a front view showing a main part of the airbag apparatus corresponding to FIG. 1 according to the fourth embodiment of the present invention. Similarly to the third embodiment described above, the fourth embodiment has a configuration in which the inflator housing portion 25 is continuous over the entire length with respect to the deployment portion 26, and the seal piece 29 is disposed over the entire length of the inflator housing portion 25. It is provided continuously. That is, the seal piece 29 protrudes further continuously from the inflator accommodating portion 25 that continuously protrudes from the developing portion 26 with its width dimension being substantially unchanged.

  And in this embodiment, the stitching | suture part 35 as a shielding part which interrupts | blocks communication with the inflator accommodating part 25 and the expansion | deployment part 26 in the position corresponding to the gas discharge port 10a side of the inflator 10 similarly to FIG. While being provided, a stitching portion 36 as a sealing portion is provided on the seal piece 29 side at a position corresponding to the gas discharge port 10 a side of the inflator 10.

  By providing the stitching portion 36, an opening 31 for inserting the inflator 10 into the inflator accommodating portion 25 is formed at a position corresponding to the opposite side of the inflator 10 from the gas discharge port 10 a.

  The seal piece 29 is provided with two bolt insertion holes 29a. In this embodiment, the tips of the two base fabrics in the seal piece 29 are aligned with each other, and the folded portion 30 as shown in FIG. 6 is not provided, but one of the two base fabrics is attached. A folded portion may be provided by further extending over the entire length of the seal piece 29.

  The seal piece 29 described above is overlapped on the inflator accommodating portion 25 so as to be folded back in FIG. 7A, and is attached using the mounting bolt 11 of the inflator 10 as shown in FIG. 7B. Attach to the bracket 105.

  Reference numeral 37 in FIG. 7B denotes an inflator fixture having a substantially L-shaped cross section attached to the inflator 10, and in this embodiment, the inflator fixture 37 is provided with a mounting bolt 11. Reference numeral 38 denotes a gas distribution, and the gas distribution 38 expands into a cylindrical shape when the airbag 2 is deployed, so that the gas generated in the inflator 10 is transferred from the open ends 38a and 38b of the gas distribution 38 to the vehicle. Spout in the front-rear direction. As shown in FIG. 7, the gas distribution 38 has an outer peripheral edge sewn together with two base fabrics of the airbag 2, and a portion corresponding to the seal piece 29 together with the seal piece 29 by the bolt 11. Fixed.

  According to the fourth embodiment, the sealing piece 29 is provided over the entire length of the inflator accommodating portion 25, and the stitching portion which is a sealing portion at a position corresponding to the gas discharge port 10 a of the inflator 10 on the base side of the sealing piece 29. 36 is provided, and an opening 31 is formed at a position corresponding to the opposite side to the gas discharge port 10a.

  For this reason, as in the third embodiment, the deployment posture of the deployment portion 26 can be stabilized, the flow of the inflation gas from the deployment portion 26 to the inflator accommodating portion 25 can be regulated by the stitching portion 35, and the stitching portion 36. Thus, the same function as the communication port back portion 33 of the first embodiment shown in FIG. 1 can be exhibited, and the pressure resistance in the vicinity of the gas discharge port 10a can be improved.

  At this time, in this embodiment, the seal piece 29 is further continuously projected from the inflator accommodating portion 25 that continuously protrudes from the developing portion 26 with its width dimension unchanged. In comparison with the case where the seal piece 29 is formed by projecting a part of the inflator accommodating portion 25 in the width direction, the manufacture becomes easier.

  FIG. 8A is a front view showing a main part of the airbag apparatus corresponding to FIG. 1 according to the fifth embodiment of the present invention. Compared to the third embodiment shown in FIG. 6, the fifth embodiment is configured such that the seal piece 29 is composed of two base cloths up to the tip, and no folded portion is provided.

  In the present embodiment, the seal piece 29 is folded along a bend line 39 that is inclined at the base end portion, and overlapped along the longitudinal direction of the inflator accommodating portion 25 as shown in FIG. Thereafter, the nut 12 is fastened to the mounting bracket 105 in the same manner as in FIG.

  According to the fifth embodiment described above, since the seal piece 29 can be overlapped over almost the entire length of the inflator accommodating portion 25, the length of the seal piece 29 can be increased, and the expanding portion 26 is expanded. It becomes possible to improve the pressure resistance of the.

  In the case of the third embodiment shown in FIG. 6, even if the length of the seal piece 29 is set to be long, the distal end side reaches the developing portion 26, and it becomes difficult to fix the seal piece 29.

  FIG. 9 is a perspective view showing a main part of an airbag apparatus according to the sixth embodiment of the present invention. In the sixth embodiment, the entire inflator 10 is accommodated in the inflator accommodating portion 25 of the airbag 2 as in the above-described embodiments. Then, as shown in the exploded perspective view of FIG. 10, the seal piece 29 is composed of two base cloths up to the tip, similar to the one shown in FIG. 8 and is folded at a right angle so that the opening 31 at the tip is directed toward the developing portion 26 without being bent obliquely as shown in FIG.

  The inflator 10 accommodated in the inflator accommodating portion 25 is attached to the inner panel 104 on the vehicle body side using the base plate 41 and the retainer bar 43, as shown in FIG. 10 and FIG. 11 which is a DD sectional view of FIG. Yes. Therefore, the fixing device such as the mounting bolt 11 is not set in the inflator 10 here, and the bolt insertion hole 29a is not provided in the seal piece 29 correspondingly.

  The base plate 41 and the retainer bar 43 constitute a fixture, and the retainer bar 43 constitutes a presser.

  The base plate 41 has a concave portion 42a for positioning and positioning the inflator accommodating portion 25 in a state where the inflator 10 is accommodated in the center of the substantially rectangular flat plate portion 42, and the upper side edge in FIG. An inflator presser piece 44 is formed at substantially the center in the longitudinal direction. The inflator presser piece 44 is curved so as to be elastically deformable so as to cover the substantially central portion in the longitudinal direction of the inflator accommodating portion 25 in the state where the inflator 10 is accommodated, and its tip 43a is opposite to the above-described bending direction. The flat plate portion 42 is opposed to the vicinity of the lower side edge in FIG. 10 while being bent in the direction.

  The base plate 41 having such a configuration is such that the tip 44a of the inflator pressing piece 44 is elastically deformed in a direction away from the flat plate portion 42 to widen the space between the inflator holding piece 44 and the flat plate portion 42. The inflator accommodating part 25 in the state where the element is accommodated is arranged so as to be positioned by the recess 42a. Thereby, the inflator accommodating part 25 in the state in which the inflator 10 is accommodated is in a state of being pressed by the inflator pressing piece 44.

  In this state, as shown in FIGS. 9 and 11, the retainer bar 43 is aligned with the inner side of the bent portion of the tip 44 a of the inflator holding piece 44, and the tip of the bent seal piece 29 is suppressed. The plate 41 is fixed using a blind rivet 45.

  Then, screws 45 shown in FIG. 11 are inserted into the mounting holes 42b provided at the left and right corners of the upper end of the base plate 41 and fastened to the inner panel 105 of the vehicle body.

  As described above, also in the sixth embodiment, the inflator 10 is inserted and arranged in the inflator accommodating portion 25 communicating with the deploying portion 26 of the airbag 2, and the opening for inserting the inflator 10 into the inflator accommodating portion 25. Since the opening 31 is closed by overlapping the seal piece 29 having 31 on the inflator accommodating portion 25, the inflator accommodating portion 25 with the inflator 10 inserted is not required to be directly attached to the vehicle body. What is necessary is just to attach to the inner panel 104 of a vehicle body, the number of parts at the time of attaching the inflator 10 can be reduced, an attachment structure can be simplified, and attachment workability | operativity is also improved.

  At this time, in the sixth embodiment, the base plate 41 and the retainer bar 43, which are fixtures to which the inflator accommodating portion 25 is attached, are fixed to the vehicle body, so that the operation of mounting the airbag device on the vehicle body can be easily performed. Can be done.

  In the above-described embodiment, the airbag apparatus is described as a side airbag that covers and expands the inside of the front door glass and the rear door glass. However, the airbag apparatus is tightly inclined (standing) like a minivan or a one-box car, for example. It can also be applied as an airbag that covers the inside of the rear window glass and deploys.

It is a front view which shows the principal part of the airbag apparatus concerning the 1st Embodiment of this invention. (A) is a front view which shows the state which wound the seal piece of FIG. 1 around the inflator accommodating part, (b) is AA sectional drawing of (a). It is the side view seen from the vehicle interior centering on the center pillar of the vehicle interior upper part of the state which accommodated the airbag. (A) is BB sectional drawing of FIG. 3, (b) is CC sectional drawing of FIG. It is a front view which shows the principal part of the airbag apparatus concerning the 2nd Embodiment of this invention. It is a front view which shows the principal part of the airbag apparatus concerning the 3rd Embodiment of this invention. (A) is a front view which shows the principal part of the airbag apparatus concerning the 3rd Embodiment of this invention, (b) is sectional drawing which shows the state which wound the sealing piece of (a). (A) is a front view which shows the principal part of the airbag apparatus concerning the 5th Embodiment of this invention, (b) is a front view which shows the state which bent the seal piece of (a). It is a perspective view which shows the principal part of the airbag apparatus concerning the 6th Embodiment of this invention. FIG. 10 is an exploded perspective view of FIG. 9. It is DD sectional drawing of FIG.

Explanation of symbols

2 Airbag 10 Inflator 10a Inflator gas outlet 25 Airbag inflator accommodating portion 26 Airbag deployment portion 28 Notch (gap)
29 Seal piece (extension part)
30 Folded part 31 Opening part of seal piece 34 Through hole (gap)
35 Sutured part (shielding part)
36 Suture part (sealing part)

Claims (6)

  A bag-like airbag has an inflator that discharges gas from a gas discharge port to deploy a deployment portion of the airbag, and the inflator housing portion that accommodates the entire inflator communicates with the deployment portion while the airbag is in communication with the airbag. Provided integrally with the bag, an opening for inserting the inflator into the inflator housing is provided near the end of the inflator opposite to the gas discharge port, and at least the opening is provided in the inflator housing. An extension part including the extension part is integrally extended outward from the inflator accommodating part, and the extension part is overlapped with the inflator accommodation part to close the opening, and the inflator is attached to the airbag. An airbag device characterized by that.   Provided between the inflator accommodating portion and the developing portion at a position corresponding to the extension portion is a shielding portion that shields the flow of gas between them, and an end portion on the opposite side to the gas discharge port of the inflator The airbag device according to claim 1, wherein a cylindrical portion surrounding the vicinity is formed.   The airbag device according to claim 1, wherein the inflator accommodating portion is continuous over the entire length in the longitudinal direction with respect to the deployment portion.   The airbag device according to claim 2, wherein the shielding part is a gap that separates the inflator accommodating part and the deployment part, and the extension part is inserted into the gap.   The extension portion is provided in the vicinity of an end portion on the opposite side to the gas discharge port of the inflator, and the extension portion is overlapped along the longitudinal direction of the inflator accommodating portion. The airbag device according to any one of the above.   The extension portion is provided over the entire length of the inflator housing portion, and a sealing portion is provided at a position corresponding to the gas discharge port of the inflator on the base side of the extension portion, and is opposite to the gas discharge port of the inflator. The airbag device according to claim 3, wherein the opening is formed near an end of the airbag.

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