JP2010235007A - Airbag device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an airbag device in which a front of a front pillar can be quickly covered, and a shift of an airbag at the completion of inflation when receiving a pedestrian can be surely prevented. <P>SOLUTION: In the airbag device M, the airbag 42 includes a covering inflation part 49 to cover the front 1a of the front pillar 1 at the completion of the inflation, and a supporting inflation part 56 arranged so that a lower side is supported to a vehicle body side member 19 to support the lower side of the covering inflation part 49 at the completion of the inflation. The side of a base 56a of the supporting inflation part 56 is connected to the covering inflation part 49, and the edge of the side of a front 56b is connected to an accommodating section P. At the completion of the inflation of the airbag 42, the supporting inflation part is folded back with respect to the covering inflation part 49 and interposed between the vehicle body side member 19 and the covering inflation part 49 so that a wall 43b at the side of the covering inflation part 49 may be brought into contact with the wall 43b constituting the covering inflation part 49. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an airbag apparatus including an airbag that can cover a front side of a front pillar of a vehicle.

  Conventionally, there has been an airbag apparatus configured to inflate and arrange an airbag so as to cover the front side of the front pillar so that the pedestrian does not directly hit the front pillar of the vehicle at the time of collision with the pedestrian of the vehicle. (For example, refer to Patent Document 1).

  In this conventional airbag apparatus, the airbag is folded and housed in a region on the front side of the door mirror disposed on the front door of the vehicle, and when the inflation is completed, the base portion on the lower end side of the front pillar that is in the vicinity of the door mirror It was set as the structure which covers the front side of the area | region extended from the tip to the front-end | tip. Specifically, in the conventional airbag device, the airbag includes a long cover inflating portion that covers the front side of the region from the base portion of the front pillar to the vicinity of the center in the vertical direction, and the upper and lower centers of the cover inflating portion. A support inflating portion disposed between the cover inflating portion and the door mirror and supported by the door mirror, and the cover inflating by the support inflating portion supported by the door mirror. When the pedestrian is received at the completion of the expansion by supporting the portion, the lateral displacement to the outside of the vehicle is prevented.

JP 2009-6957 A

  However, in the airbag of the conventional airbag apparatus, the support inflating portion is configured to partially protrude toward the door mirror side from the vicinity of the upper and lower centers of the cover inflating portion. The lower end side portion of the inflating portion cannot be accurately supported, and the lower end side portion may be shaken, and the upper end side portion of the cover inflating portion may be shaken. There was room for improvement in terms of accurately preventing lateral shift.

  The present invention solves the above-described problems, and can quickly cover the front surface of the front pillar, and the airbag when inflated can accurately prevent a lateral shift when receiving a pedestrian. An object is to provide an airbag device.

An airbag device according to the present invention includes an airbag that can cover a front side of a region extending from a lower end side of a front pillar of a vehicle to a tip, and an inflator that supplies inflation gas to the airbag. An airbag device having a configuration comprising:
Airbag
It is configured to be folded and stored in a storage part arranged near the belt line on the side surface of the vehicle below the front pillar, and to expand while projecting from the storage part by flowing an expansion gas into the storage part. ,
A cover inflating portion arranged so as to cover an area extending from the lower area of the front pillar to the front surface of the front pillar when the expansion is completed;
When the expansion is completed, on the lower surface side of the cover expansion portion, the support expansion portion is disposed so that the lower surface side is supported by the vehicle body side member and supports the lower surface side of the cover expansion portion;
And is configured to include
An inflator that supplies inflation gas to the airbag is built in the cover inflating part, and attached to the storage site together with the cover inflating part,
The support expansion part
The base side is connected to the cover expansion part, the edge on the tip side is attached to the storage part,
When the airbag is completely inflated, it is folded back with respect to the cover inflating portion so that the wall portion on the cover inflating portion side is brought into contact with the wall portion constituting the cover inflating portion. It is characterized by being interposed between.

  In the airbag device of the present invention, the airbag has a cover inflating portion that is arranged so as to cover from the region below the front pillar to the front surface of the front pillar when inflation is completed, but the lower surface of the cover inflating portion A support inflating portion is disposed on the side, and the support inflating portion is disposed on the lower surface side of the cover inflating portion so that the lower surface side is supported by the vehicle body side member. It is the structure which supports. In other words, in the airbag device of the present invention, the support inflating portion is configured to support the lower surface side of the lower end side portion covering the lower end side base portion of the front pillar in the cover inflating portion. When the airbag is deployed and inflated, the lower end side portion of the cover inflating part can be accurately supported while suppressing blurring, and the upper end side portion can be deployed so as to shake inward and outward during the deployment. Thus, the expansion of the cover inflating portion can be completed quickly so as to cover the front side of the front pillar while suppressing a large shake.

  In the airbag device of the present invention, the support inflating portion is folded back with respect to the cover inflating portion when the inflating is completed, and the wall portion on the cover inflating portion side is brought into contact with the wall portion constituting the cover inflating portion. Thus, the support inflating portion is interposed between the vehicle body side member and the cover inflating portion, so that the mutual movement of the inflating gas is suppressed relative to the cover inflating portion. It will be arrange | positioned so that a lower surface side may be supported. Therefore, in the airbag device of the present invention, since the support inflating portion can support the cover inflating portion while maintaining a high internal pressure, the cover inflating portion receiving the pedestrian is strongly pressed by the pedestrian. Even if this is the case, the support inflating portion can be prevented from being laterally displaced toward the vehicle exterior by receiving this pressing force, and the lateral displacement of the cover inflating portion toward the vehicle exterior can be accurately prevented. As a result, in the airbag device of the present invention, a pedestrian can be accurately received by the cover inflating portion that covers the front surface of the front pillar in a state in which the lateral displacement to the vehicle outer side is suppressed.

  Therefore, in the airbag apparatus according to the present invention, the front surface of the front pillar can be covered quickly, and the airbag when inflated can accurately prevent the lateral displacement when the pedestrian receives.

Further, in the airbag device of the present invention, the cover inflating portion is disposed so as to cover the front side of the front pillar when the inflation is completed, and to cover the side surface of the front pillar when the inflation is completed. And a connecting expansion part that connects the pillar cover part and the support expansion part,
The pillar cover portion and the connecting expansion portion are configured to contact the vehicle body side wall portion disposed on the front pillar side when the expansion is completed and the vehicle outer side wall portion disposed to face the vehicle body side wall portion. Partition each other,
It is preferable that the inflator is configured to be incorporated in the connected expansion portion.

  In the airbag device having the above configuration, since the partition portion is provided in the region of the cover inflating portion, and the cover inflating portion is partitioned into the pillar cover portion and the connected inflating portion, an increase in volume can be suppressed. It is possible to prevent an excessively thick expansion, and when the expansion is completed, the cover expansion portion can cover a wide range from the front side to the side surface of the front pillar. In addition, since the inflator is built in the connecting expansion portion that connects the pillar cover portion and the support expansion portion, the inflation gas can be quickly flowed into the pillar cover portion and the support expansion portion, The entire airbag can be quickly inflated.

  Furthermore, in the airbag device having the above-described configuration, the cell that expands in a substantially bar shape substantially along the vertical direction so as to extend from the base portion of the support inflation portion to the pillar cover portion when the inflation of the airbag is completed. Can be supported by the portion of the cell, such as a column extending in the vertical direction, in the connecting and expanding portion, so that the lower surface side of the pillar cover portion can be supported. Lateral displacement can be prevented more accurately.

  Furthermore, in the airbag device having the above-described configuration, if the edge of the support inflating part is attached to the storage part using an attaching means for attaching the inflator to the storage part, the attachment of attaching the edge of the support inflating part It is not necessary to use a means separately, the number of parts can be reduced, and since the inflator and the edge of the support expansion part can be simultaneously attached to the storage part, the number of manufacturing steps can be reduced, which is preferable.

Furthermore, in the airbag device configured as described above, the airbag is provided with a connecting belt that extends from the leading edge side away from the support inflating portion in the cover inflating portion and is connected to the storage portion at the tip.
It is preferable that the connecting belt is configured to be disposed between the protective inflating portion and the front pillar when the airbag is completely inflated, and to pull the leading edge portion toward the storage site.

  In the airbag device having the above-described configuration, when the airbag is deployed and inflated, it is possible to prevent the portion of the cover inflating portion on the side away from the support inflating portion from being lifted greatly from the vehicle body. By the portion, the front side of the front pillar can be covered quickly. In addition, when the pedestrian is received, the cover inflating portion can be prevented from moving so as to deviate from the front pillar due to the pressing force of the pedestrian, so that the pedestrian is accurately received by the cover inflating portion. be able to.

  Furthermore, in the airbag device having the above-described configuration, if the tip of the connecting belt is configured to be connected to the storage site using an attaching means for attaching the inflator to the storage site, the connection means for connecting the tip of the connection belt is provided. It is not necessary to use it separately, and the number of parts can be reduced, and the inflator and the tip of the connecting belt can be attached to the storage portion at the same time, which is preferable because the number of manufacturing steps can be reduced.

1 is a partially enlarged perspective view of a vehicle on which an airbag device according to an embodiment of the present invention is mounted. 1 is a partially enlarged side view of a vehicle on which an airbag device of an embodiment is mounted. 1 is a partially enlarged plan view of a vehicle on which an airbag device of an embodiment is mounted. It is a schematic longitudinal cross-sectional view which shows the mounting state of the airbag apparatus of embodiment, and shows the IV-IV site | part of FIG. It is a top view of the state where the air bag used for the air bag device of an embodiment was developed flat. It is a longitudinal cross-sectional view of the airbag of FIG. 5, and shows the VI-VI part of FIG. It is sectional drawing which shows the state which expanded the airbag of FIG. 5 alone. It is a schematic longitudinal cross-sectional view which shows the inflated state of an airbag at the time of the action | operation of the airbag apparatus of embodiment. It is a schematic perspective view which shows the inflated state of the airbag at the time of the action | operation of the airbag apparatus of embodiment. It is the elements on larger scale of the state which developed the air bag which is other forms of the present invention flatly. It is a schematic perspective view which shows the inflated state in the state which mounted the airbag of FIG. 10 in the vehicle. It is the elements on larger scale of the state which developed the air bag which is other forms of the present invention flatly. It is a schematic perspective view which shows the inflated state in the state which mounted the airbag of FIG. 12 in the vehicle.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. An airbag device M according to the embodiment is disposed adjacent to the rear side of the left and right front pillars 1 of a vehicle V as shown in FIGS. It is mounted in the vicinity of the belt line 17 of each front door 13 constituting the side surface of the vehicle V to be installed. Each of the left and right front pillars 1 includes an outer panel 2 made of a steel plate or the like, an inner panel 3, and a reinforcement 4 disposed between the outer panel 2 and the inner panel 3. It is provided with high rigidity as a structure (see FIG. 8). In addition, the member shown with the code | symbol 6 of FIG. 1 is window frame rubber, and the member shown with the code | symbol 7 of FIGS. 1-3 is a windshield. 1 to 3 is a hood panel, and the member 9 to FIGS. 1 to 3 is a front bumper.

  In this specification, the front-rear, up-down, left-right directions correspond to the front-rear, up-down, left-right directions of the vehicle V unless otherwise specified.

  In the embodiment, the airbag device M including the airbag 42 that covers the front surface 1a side of the front pillar 1 located on the right side of the vehicle V will be described in detail. Since the airbag apparatus provided with the airbag covering the front side of the left front pillar has the same configuration as the right airbag apparatus and has the same configuration, the description of the left airbag apparatus is omitted. .

  The front door 13 on which the airbag apparatus M of the embodiment is mounted is disposed adjacent to the rear side of the front pillar 1 and is located behind the front pillar 1 as shown in FIGS. A side window 14 and a door portion 18 below the side window 14 are provided, and a door mirror 27 is disposed in the vicinity of the lower corner on the front side of the side window 14. The side window 14 includes a door glass 15 and a window frame portion 16 disposed around the door glass 15. In the case of the embodiment, the lower edge portion 16 a of the window frame portion 16 constitutes the belt line 17. As shown in FIG. 4, the door portion 18 covers the outer panel 19 and the inner panel 21 made of a steel plate or the like disposed with a gap capable of accommodating the door glass 15 therebetween, and the inner side of the inner panel 21. The door trim 23 is disposed on the inner side of the outer panel 19 and the inner panel 21 (on the side of the door glass 15), and the inner reinforcement 20 and the inner reinforcement 22 are arranged on the inner side of the outer panel 19 and the inner panel 21, respectively. It is installed. An outer molding 24 constituting the window frame portion 16 is disposed on the upper end side of the outer panel 19, and a glass weather strip 25 for sliding the door glass 15 is disposed on the upper end sides of the outer panel 19 and the inner panel 21. It is arranged. In the embodiment, the seal member 32 for preventing rainwater and foreign matter from entering the airbag device M side is disposed on the vehicle inner side I of the region where the airbag device M is disposed in the outer reinforcement 20. (See FIG. 4).

  As shown in FIGS. 1 to 3, the door mirror 27 is attached to a mounting base 29 near the front end 16 b of the lower edge portion 16 a (belt line 17) in the window frame portion 16, and is rotatable to the upper surface side of the mounting base 29. And a mirror main body 28 to be attached. Specifically, the mounting base 29 is disposed close to the lower side of the base portion 1b on the lower end side of the front pillar 1 (see FIGS. 1 and 2). In the case of the embodiment, the attachment base 29 has a configuration in which the mirror main body 28 is disposed on the rear end side, and the airbag device M is disposed in a region on the front side of the portion where the mirror main body 28 is attached. is there. The mounting base 29 is disposed on the inner side (left side) of the vehicle and attached to the outer reinforcement 20. The synthetic resin is disposed so as to cover the outer side (right side) of the mounting member 30. In the case of the embodiment, the attachment member 30 constitutes a case 33 as a storage part P for storing the airbag 42 and the inflator 37 folded in the airbag apparatus M. The cover member 31 constitutes an airbag cover 34 that covers the airbag 42 folded in the airbag apparatus M (see FIG. 4). In other words, in the case of the embodiment, the airbag apparatus M is mounted on the attachment base 29 of the door mirror 27 in the vicinity of the belt line 17.

  As shown in FIG. 4, the airbag apparatus M includes a flexible bag-like airbag 42 and an inflator 37 that supplies inflation gas to the airbag 42. The storage portion P for storing the folded airbag 42 and the inflator 37 is configured from a region on the front side of the mounting base 29 in the vicinity of the front end of the door mirror 27, and stores the folded airbag 42 and the inflator 37. As described above, the case 33 is configured by the mounting member 30 of the mounting base 29, and the airbag cover 34 covering the vehicle exterior O of the airbag 42 is configured by the cover member 31 of the mounting base 29 (FIG. 4). reference).

  As shown in FIG. 4, the case 33 is configured to be continuous with the attachment member 30, and includes a bottom wall portion 33 a and a peripheral wall portion 33 b extending from the bottom wall portion 33 a, and is provided on the vehicle exterior side. O is opened. In the case of the embodiment, the case 33 is configured to bring the bottom wall portion 33a into contact with the outer reinforcement 20, and a bolt 38a as an attaching means for attaching the inflator 37 to the case 33 is provided from the bottom wall portion 33a. It is attached to the outer reinforcement 20 which is a vehicle body side member by protruding and fixing the nut 39 to the outer reinforcement 20.

  The airbag cover 34 is configured to be continuous with the attachment member 30, and includes a door portion 34 a that covers the opening 33 c of the case 33, and extends from the periphery of the door portion 34 a to the vehicle interior I to the peripheral wall portion 33 b of the case 33. And an attachment wall portion 34b to be attached (see FIG. 4). The door portion 34a is configured to open when the airbag 42 is inflated and to project the airbag 42 that inflates from the opening 33c of the case 33. In the case of the embodiment, as shown in FIG. It is configured as a lower opening with the lower end side as the center of rotation, and the upper end is opened downward toward the outside of the vehicle. ) Is disposed.

  As shown in FIG. 4, the inflator 37 is a cylinder type in which the axial direction is substantially aligned with the front-rear direction. The inflator 37 includes a gas discharge port (not shown) that can discharge an expansion gas, and a sheet metal diffuser 38. Is held around. The inflator 37 projects a bolt 38a as an attaching means provided on the diffuser 38 from the lower portion 54 in a state where the inflator 37 is built in a lower portion 54 of the connecting inflation portion 51 described later of the airbag 42. The nut 39 is fixed to the outer reinforcement 20 of the door portion 18 in a state of projecting from the bottom wall portion 33 a of the case 33, thereby being fixed to the case 33 together with the airbag 42. In the case of the embodiment, although not shown, the bolts 38a of the inflator 37 are formed at two locations along the front-rear direction. Further, the inflator 37 inputs an operation signal from a predetermined airbag operation circuit and supplies the inflation gas into the airbag 42. The airbag operating circuit operates the inflator 37 when a signal is input from a sensor SE (see FIGS. 1 and 2) that is disposed on the front bumper 9 of the vehicle V and can detect a collision with a pedestrian. Become.

  As shown in FIGS. 5 and 6, the airbag 42 has a bag main body 43 that is formed into a flexible bag shape by allowing an inflating gas to flow into the bag 42. The cover inflating portion 49 and the support inflating portion 56 disposed on the lower surface side of the cover inflating portion 49 when the inflating is completed. In the embodiment, the airbag 42 has a connecting belt 60 that is separate from the bag main body 43 and connects the cover inflating portion 49 to the case 33 side. In FIG. 5, the upper side is the left side when the vehicle is mounted in a flatly deployed airbag, and the lower side is the right side when the vehicle is mounted in a flatly deployed airbag.

  In the case of the embodiment, the bag main body 43 includes a vehicle body side wall portion 43b disposed on the front pillar 1 side at the time of completion of expansion, and a vehicle outer side wall portion 43a disposed to face the vehicle body side wall portion 43b. It is configured as a flat bag in which the peripheral edges of the vehicle body side wall 43b and the vehicle outer side wall 43a in a state of being flattened are combined. Specifically, the bag body 43 has an outer shape in which a cover inflating portion 49 and a support inflating portion 56 are connected on the left and right side. In the case of the embodiment, the bag body 43 is formed from a bag weave using polyester yarn, polyamide yarn or the like. Further, in the case of the embodiment, the bag body 43 has an outer shape in a flatly developed state, a vertical region portion 43c extending in the front-rear direction side, and a horizontal region portion 43d extending rightward from the front end of the vertical region portion 43c. It is configured as a substantially inverted L shape having the shape (see FIG. 5).

  The bag body 43 includes a peripheral portion 44 formed over the entire outer peripheral edge, and portions of the partition portions 45 and 46 and the thickness restricting portion 47 formed at predetermined locations in a region surrounded by the peripheral portion 44. The vehicle outer wall 43a and the vehicle body side wall 43b are coupled (contacted) to prevent the inflating gas from flowing, and the remaining region is formed by connecting the vehicle outer wall 43a and the vehicle body side wall 43b. It is configured to allow the inflation gas to flow into the interior so as to be separated. As shown in FIG. 5, the partition portion 45 extends from the boundary portion between the vertical region portion 43 c and the horizontal region portion 43 d in the peripheral portion 44, and reverses so as to protrude toward the vertical region portion 43 c side (left side). A rear horizontal bar portion 45a formed substantially along the left-right direction so as to extend rightward from a boundary portion between the vertical region portion 43c and the horizontal region portion 43d, and a rear horizontal bar portion 45a. It is formed substantially along the front-rear direction so as to connect the front horizontal bar portion 45b formed substantially parallel to the rear horizontal bar portion 45a in the front, and the left end of the rear horizontal bar portion 45a and the left end of the front horizontal bar portion 45b. Vertical bar portion 45c. The vertical bar portion 45c is disposed at a position on the right side of the center in the left-right direction of the vertical region portion 43c. In the airbag 42 of the embodiment, as will be described later, the pillar cover portion 50 and the connection inflating portion 51 are disposed. And constitutes the boundary. The partition 46 is connected to the front part 44c and the rear part 44d of the peripheral part 44 and is formed intermittently in the vicinity of the right end of the lateral region part 43d as a substantially linear shape along the front-rear direction. Yes. In the case of the embodiment, the separation distance between the partition portion 46 and the left side portion 44b in the peripheral portion 44 is set to be substantially the same as the separation distance between the partition portion 46 and the right end of the front horizontal bar portion 45b in the partition portion 45. Yes. The thickness restricting portion 47 has a substantially circular shape and is behind the front horizontal bar portion 45b in the partitioning portion 45 and further to the left than the center between the vertical bar portion 45c and the partitioning portion 46, and the front horizontal bar portion 45b. It is arrange | positioned in the position used as the approximate center between and the peripheral part 44. FIG.

  As shown in FIG. 9, the cover inflating portion 49 is disposed so as to cover from the area on the front side of the door mirror 27 below the front pillar 1 to the front surface 1 a of the front pillar 1 when the inflation of the airbag 42 is completed. Therefore, in the case of the embodiment, the pillar cover portion 50 disposed so as to cover the front surface 1a side of the front pillar 1 when the expansion is completed, and the connected expansion portion disposed so as to cover the side surface side of the front pillar 1 when the expansion is completed. 51.

  As shown in FIGS. 8 and 9, the pillar cover portion 50 is configured to cover the front surface 1 a side of the front pillar 1 from the base portion 1 b of the front pillar 1 to the vicinity of the center in the vertical direction when expansion is completed. In the case of the embodiment, the rear end 50a when the expansion is completed is configured to be positioned behind the mirror body 28. In the case of the embodiment, as shown in FIGS. 5 and 6, the pillar cover portion 50 has a vertical region portion 43 c in the bag body 43 in a flatly deployed state from a region on the left side of the vertical bar portion 45 c of the partition portion 45. It is configured. In other words, the boundary portion between the pillar cover portion 50 and the connecting expansion portion 51 is constituted by the vertical bar portion 45 c of the partition portion 45.

  As shown in FIGS. 8 and 9, the connected inflating portion 51 is arranged so as to be bent with respect to the pillar cover portion 50 when the inflating is completed, and from the side surface of the front pillar 1 to the side surface of the upper end of the door portion 18 in the front door 13. It is configured to cover the side. In the case of the embodiment, the connecting expansion portion 51 is formed by connecting the pillar cover portion 50 and the support expansion portion 56 so as to connect the pillar cover portion 50 and the support expansion portion 56 disposed below the pillar cover portion 50. Is intervening. Further, in the case of the embodiment, the bag main body 43 is arranged around the front pillar 1 so as to be bent at the portion of the vertical bar portion 45c in the partition portion 45 when the inflation is completed (see FIGS. 8 and 9). ). In the case of the embodiment, the connected inflating portion 51 is constituted by an area between the vertical bar portion 45c of the partitioning portion 45 and the partitioning portion 46 in the bag main body 43, in other words, when the inflation is completed. The front end 51 a of the pillar cover portion 50 is configured to substantially coincide with the front end 50 b of the pillar cover portion 50. In other words, the connected inflating portion 51 is configured to continue from the region on the front end 50b side of the pillar cover portion 50 (the region covering the portion on the front portion 1b side of the front surface 1a of the front pillar 1) when the expansion is completed. Moreover, the connection expansion | swelling part 51 is notched and is comprised by the rear lower end side at the time of completion of expansion | swelling (refer FIG. 5, 9). In the connected inflating portion 51, a notch portion 52 on the rear lower end side is formed to prevent the mirror main body 28 from being strongly pressed and to bypass the mirror main body 28 when the expansion is completed. The connecting inflating portion 51 is arranged so that the rear upper end side portion 51b formed so as to continue from the rear end 50a of the pillar cover portion 50 is placed on the upper surface side of the mirror body 28 when the expansion is completed. The Rukoto. That is, the airbag 42 completes the inflation by causing the mirror main body 28 to support the lower surface side of the rear upper end side portion 51b of the connected inflating portion 51.

  Further, on the front end 51a side of the connected inflating portion 51, the region surrounded by the front horizontal bar portion 45b and the peripheral edge portion 44 of the partition portion 45 is inflated in a substantially rod shape substantially along the vertical direction when the airbag 42 is completely inflated. A cell 53 is configured (see FIGS. 5 and 9). When the expansion is completed, the cell 53 is arranged so as to continuously extend from the base portion 56a of the support expansion portion 56 (the left end in a state where the expansion is flat) to the pillar cover portion 50.

  Further, in the connected inflating portion 51, a lower portion 54 disposed on the right side of the thickness restricting portion 47 in a flatly deployed state and below the thickness restricting portion 47 when the expansion is completed is shown in FIG. As shown in FIG. 8, the inflator 37 is housed therein, and an insertion hole 54 a for inserting the bolt 38 a of the inflator 37 is disposed in the vehicle body side wall 43 b (see FIGS. 5 and 6). . In the embodiment, the insertion holes 54a are formed at two locations along the front-rear direction corresponding to the bolts 38a of the inflator 37. The lower portion 54 is arranged so that the portion around the insertion hole 54 a in the vehicle body side wall 43 b is drawn into the case 33 when the airbag 42 is completely inflated.

  The support inflating portion 56 is arranged on the lower surface side of the cover inflating portion 49 so that the vehicle interior I on the lower surface 56c side is supported by the outer panel 19 in the front door 13 when the inflation of the airbag 42 is completed. (See FIGS. 8 and 9). The support expansion portion 56 is configured to support the lower surface side of the cover expansion portion 49 (specifically, the lower surface 51c side of the connection expansion portion 51) with the lower surface 56c side (vehicle inner side I) supported by the outer panel 19. Yes. In the case of the embodiment, the support inflating portion 56 is configured from a region on the right side of the partition portion 46 in the lateral region portion 43d of the bag body 43 in a flatly deployed state (see FIG. 5). That is, the support inflating portion 56 is composed of a region surrounded by the peripheral edge portion 44 and the partitioning portion 46. In other words, the region below the connected inflating portion 51 at the time of completion of expansion (flattened flat). The width dimension in the front-rear direction is configured to be substantially the same as the width dimension in the front-rear direction of the lower area in the connected inflating portion 51. And the support expansion part 56 is set as the structure which connected the base part 56a side (the left end side in the state which expand | deployed the bag main body 43 flatly) to the connection expansion part 51 in the cover expansion part 49. FIG.

  Further, the support inflating portion 56 has an insertion hole 57 through which the bolt 38a of the inflator 37 can be inserted into the right side portion 44a of the peripheral edge portion 44 that is on the tip 56b side (right end side in a flatly unfolded state) away from the base portion 56a. The bolt 38a of the inflator 37 is inserted into the insertion hole 57, and the peripheral portion of the insertion hole 57 is attached to the case 33 together with the inflating portion 51 of the inflator 37 and the airbag 42. (See FIGS. 5 and 7). The insertion holes 57 are formed at two locations along the front-rear direction corresponding to the bolts 38 a of the inflator 37. Specifically, the support inflating portion 56 is a crease C (see FIGS. 5 to 7) at the partition portion 46 so that the vehicle body side wall portion 43 b is in contact with the vehicle body side wall portion 43 b of the connection inflating portion 51. , The bolt 38a is inserted into the insertion hole 57. Moreover, the partition part 46 which partitions the support expansion part 56 and the connection expansion part 51 is formed intermittently, and the site | part between each partition part 46 is connected with the support expansion part 56 as the communication part 58. The expansion part 51 is communicated (see FIG. 5). In the case of the embodiment, the communication portion 58 is formed at two locations along the front-rear direction.

  Then, the support inflating portion 56, when the inflation of the airbag 42 is completed, the base portion 56a side is positioned on the vehicle outer side O, and the front end 56b side is positioned on the vehicle inner side I that is the case 33 side. The vehicle body side wall portion 43b on the side of the connected expansion portion 51 is brought into contact with the vehicle body side wall portion 43b (the lower surface 51c) constituting the connection expansion portion 51 in a state of being folded with respect to the connection expansion portion 51 at the site. The lower surface 57c side composed of the portion 43a is supported by the outer panel 19 of the front door 13 which is a vehicle body side member, and is interposed between the outer panel 19 and the connection expansion portion 51, and the lower surface 51c side of the connection expansion portion 51 (See FIGS. 8 and 9).

  As shown in FIGS. 5 and 6, the connecting belt 60 is formed separately from the bag body 43 and is composed of a woven fabric made of polyester yarn or polyamide yarn. A base portion 60a is sewn to the left side portion 44b of 44. In other words, the connecting belt 60 is configured to extend substantially along the left-right direction from the left edge 50 c (the leading edge) away from the support expansion portion 56 in the pillar cover portion 50 of the cover expansion portion 49. . In the case of the embodiment, the connecting belt 60 is wide, and the width dimension in the front-rear direction is configured to be about ½ of the width dimension before and after the lateral region portion 43 d in the bag body 43. Further, an insertion hole 61 through which the bolt 38 a of the inflator 37 can be inserted is formed on the end 60 b side of the connecting belt 60. The insertion holes 61 are formed at two locations along the front-rear direction corresponding to the bolts 38a of the inflator 37. In the embodiment, the front end 60b side of the connecting belt 60 is connected to the bolts 38a of the inflator 37. It is connected to the bottom wall 33 a of the case 33 together with the inflating part 51 of the inflator 37 and the airbag 42. When the airbag 42 is completely inflated, the connecting belt 60 is disposed between the cover inflating portion 49 and the front pillar 1 as shown in FIG. The length of the connecting belt 60 is determined by pulling the left edge 50c (leading edge) of the pillar cover portion 50 toward the case 33 when the airbag 42 is completely inflated. 50c is set to such a length dimension that it can be prevented from floating from the front pillar 1 and does not hinder the rapid deployment of the pillar cover portion 50. Further, in the case of the embodiment, the insertion hole 61 provided at the tip 60 b of the connecting belt 60 is an insertion hole 61 </ b> B disposed on the rear side in consideration of the fact that the front pillar 1 is inclined with respect to the case 33. The distance from the insertion hole 54a is set to be larger than the distance from the insertion hole 54a of the insertion hole 61F disposed on the front side, and the tip 60b of the connecting belt 60 is also formed in the insertion hole 61F. , 61B corresponding to the front-rear direction (see FIG. 5).

  In the case of the embodiment, the airbag 42 has the inflator 37 built in the lower portion 54 of the connecting inflating portion 51 so that the bolt 38a protrudes from the insertion hole 54a, the support inflating portion 56, and the vehicle body side wall portion 43b. A bolt is inserted into the insertion hole 57 formed in the right side portion 44a of the peripheral portion 44 (the tip 56b of the support expansion portion 56) so as to be opposed to the vehicle body side wall portion 43b of the connection expansion portion 51. With the 38a inserted, it is folded into a predetermined shape that can be stored in the case 33. The folded bag body 43 is housed in the case 33 together with the inflator 37 in a state where the bolt 38a is inserted into the insertion hole 61 formed in the tip 60b of the connecting belt 60. And if the bolt 38a which protrudes from the bottom wall part 33a of the case 33 is fixed to the outer reinforcement 20 in the front door 13 with the nut 39, the inflator 37 and the airbag 42 can be attached to the case 33 at the same time. The edge portion on the tip 56b side of the support expansion portion 56 (the right side portion 44a in the peripheral edge portion 44) and the tip 60b of the connecting belt 60 can be attached to the case 33.

  In the airbag apparatus M of this embodiment, if the inflator 37 is operated after being mounted on the vehicle V, the inflation gas discharged from the inflator 37 flows into the airbag 42 and the airbag 42 that is inflated The airbag 42 that pushes open the airbag cover 34 and protrudes from the opening 33c of the case 33 completes the inflation, as shown by the two-dot chain line in FIGS. 1 to 3 and FIGS.

  And in the airbag apparatus M of embodiment, the cover 42 is arrange | positioned so that the airbag 42 may cover from the area | region of the front side of the door mirror 27 used as the downward direction of the front pillar 10 to the front surface 10a of the front pillar 10 at the time of completion of expansion. 49, a support expansion portion 56 is disposed on the lower surface side of the cover expansion portion 49 (the lower surface 51c side of the connection expansion portion 51). The support expansion portion 56 is a mirror in the door mirror 27. In the region on the front side of the main body 28, the lower surface 56 c side is arranged to be supported by the outer panel 19 of the front door 13 that is a vehicle body side member, and the lower surface side of the cover expansion portion 49 (the lower surface 51 c side of the connection expansion portion 51). (See FIG. 8). In other words, in the airbag apparatus M of the embodiment, the support inflating portion 56 is the lower surface side of the lower end side portion of the cover inflating portion 49 that covers the base portion 10b of the front pillar 10 (the lower surface 51c side of the connecting inflating portion 51). When the airbag 42 is deployed and inflated, the lower end side portion of the cover inflating portion 49 (the portion from the connecting inflating portion 51 to the front end 50b of the pillar cover portion 50) is shaken. It is possible to accurately support and suppress the portion of the rear end 50a side of the pillar cover portion 50 that is the upper end side portion from being unfolded so as to be swayed toward the inside and outside of the vehicle during deployment and expansion. The inflating portion 49 can be rapidly inflated so as to cover the front surface 10a side of the front pillar 10 while suppressing a large shake.

  In the airbag apparatus M of the embodiment, the support inflating portion 56 is folded back with respect to the cover inflating portion 49 when the inflating is completed, and the vehicle body side wall 43b on the cover inflating portion 49 side is connected to the cover inflating portion 49. The support expansion portion 56 is disposed between the outer expansion panel 19 that is a vehicle body side member and the connection expansion portion 51 of the cover expansion portion 49 so as to be in contact with the vehicle body side wall portion 43 b of the expansion portion 51. The expansion portion 49 is disposed so as to support the lower surface side of the cover expansion portion 49 (the lower surface 51c side of the connected expansion portion 51) in a state where mutual movement of the expansion gas is suppressed. Therefore, in the airbag apparatus M of the embodiment, since the support inflating portion 56 can support the cover inflating portion 49 while maintaining a high internal pressure, the cover inflating portion 49 that has received the pedestrian is the pedestrian. The support expansion portion 56 can be prevented from laterally shifting to the outside of the vehicle due to the pressing force even if the cover expansion portion 49 is strongly pressed by the cover. can do. As a result, in the airbag apparatus M of the embodiment, a pedestrian can be accurately received by the cover inflating portion 49 that covers the front surface 10a of the front pillar 10 in a state in which the lateral shift to the vehicle outer side is suppressed.

  Therefore, in the airbag apparatus M of the embodiment, the front face 1a of the front pillar 1 can be quickly covered, and the airbag 42 at the time of completion of inflation accurately prevents a lateral shift when receiving a pedestrian. Can do.

  More specifically, in the airbag apparatus M of the embodiment, the cover inflating portion 49 includes a pillar cover portion 50 that covers the front surface 10a of the front pillar 10 when inflation is completed, and a base portion 10b of the front pillar 10 in the pillar cover portion 50. A connecting expansion part 51 that extends from a portion on the front end 50b side that covers the cover and covers a region on the front side of the mirror main body 28, and the pillar cover part 50 and the connection expansion part 51 have a leading edge. Configured to match. That is, since the connecting inflating portion 51 does not include a recess that causes the front edge side to be partially recessed with respect to the pillar cover portion 50, the front end 50b of the pillar cover portion 50 itself is not expanded when the airbag 42 is deployed and inflated. In this way, it is possible to prevent the connected inflating portion 51 from shaking. Further, since the support inflating portion 56 has the width dimension in the front-rear direction at the time of completion of expansion set to be the same as that of the connected inflating portion 51, the support inflating portion 56 causes the lower surface 51c side of the connecting inflating portion 51 to be It can be supported over the entire area. Therefore, since the pillar cover part 50 is supported by the support expansion part 56 via the connection expansion part 51 supported by the support expansion part 56 over the whole area of the front and back on the lower surface 51c side, the pillar cover part 50 is connected to the vehicle. It is possible to accurately prevent lateral displacement to the outside.

  In particular, in the airbag apparatus M of the embodiment, the support inflating portion 56 and the connected inflating portion 51 are intermittently partitioned by a linear partitioning portion 46 that is intermittently provided with a gap. The support inflating portion 56 is folded back toward the vehicle body side wall portion 43b with a crease C at the partition 46 portion with respect to the connecting inflating portion 51. That is, in the airbag apparatus M of the embodiment, when the airbag 42 is completely inflated, the partition portion 46 forms a folding start point, and the folded state of the support inflating portion 56 with respect to the connected inflating portion 51 is achieved. It is easy to maintain, and the support expansion part 56 and the connection expansion part 51 communicate with each other only at the part of the communication part 58 that is a part between the partition parts 46, so that the mutual movement of the expansion gas can be suppressed as much as possible. It will be. Therefore, in the airbag apparatus M of the embodiment, the arrangement position of the support inflating portion 56 can be stabilized, and the mutual movement of the inflation gas between the support inflating portion 56 and the connected inflating portion 51 is suppressed as much as possible. Therefore, the support expansion part 56 can stably support the lower surface 51c side of the connection expansion part 51. Furthermore, in the embodiment, the airbag apparatus M is mounted on the front side of the door mirror 27, and when the inflation is completed, the pillar cover portion 50 is configured so that the rear end 50a passes through the rear upper end side portion 51b of the connecting inflatable portion 51. Since it is supported by the mirror main body 28, the lower surface side is supported by the support inflating portion 56 and the mirror main body 28 over substantially the entire front and rear, and the lateral deviation to the outside of the vehicle can be suppressed stably. .

  Further, in the airbag apparatus M of the embodiment, a partition portion 45 configured to bring the vehicle body side wall portion 43b and the vehicle outer side wall portion 43a into contact with each other is provided in the region of the cover inflating portion 49. 45, the cover inflating portion 49 is divided into the pillar cover portion 50 and the connecting inflating portion 51, so that an increase in volume can be suppressed, and an excessively thick inflating can be prevented. The cover inflating portion 49 can cover a wide range from the front surface 1a side to the side surface side of the front pillar 1. Of course, if such a point is not taken into consideration, a tether that connects the vehicle outer side wall portion and the vehicle body side wall portion is disposed in the airbag, and the pillar cover portion and the connection inflating portion are partitioned by this tether. You may comprise so that it may do. Further, in the airbag apparatus M of the embodiment, the inflator 37 is built in the connecting inflating part 51 that connects the pillar cover part 50 and the support inflating part 56, so that the inflator 37 and the support inflating part in the pillar cover part 50 are supported. The inflation gas can be quickly flowed into the portion 56, and the entire airbag 42 can be quickly inflated.

  Furthermore, in the airbag apparatus M of the embodiment, the connection inflating portion 51 is substantially along the vertical direction so as to extend from the base portion 56a of the support inflating portion 56 to the pillar cover portion 50 when the inflation of the airbag 42 is completed. Since the cell 53 that expands in a substantially rod shape is disposed, the lower surface side of the pillar cover portion 50 can be supported by the portion of the cell 53 such as a support column extending in the vertical direction in the connection expansion portion 51. Further, it is possible to more accurately prevent the lateral displacement of the pillar cover portion 50 itself toward the outside of the vehicle. In particular, in the airbag 42 of the embodiment, as shown in FIG. 9, the cell 53 is disposed on the front end side (front end side of the airbag 42) of the connected inflating portion 51 when the inflation is completed. By 53, the lower surface side of the front end 50b in the pillar cover part 50 can be accurately supported. If this point is not taken into consideration, it is not necessary to arrange cells that expand in a substantially rod shape substantially along the vertical direction in the connection expansion portion, and the cell arrangement positions are also the air positions shown in FIGS. As shown in the bag 42A, it may be configured to be arranged on the rear end side of the connected inflating portion 51A at the completion of the inflating.

  Furthermore, in the airbag apparatus M of the embodiment, the edge portion (the right side portion 44a in the peripheral edge portion 44) of the support inflatable portion 56 is attached to the case 33 using the bolt 38a of the inflator 37. Therefore, it is not necessary to separately use an attaching means for attaching the edge of the support expansion portion, the number of parts can be reduced, and the inflator 37 and the edge portion on the tip 56b side of the support expansion portion 56 are simultaneously attached to the case 33. Since it can be attached, the number of manufacturing steps can also be reduced. Of course, if such a point is not taken into consideration, the edge of the support expansion portion may not be fastened together with the inflator, and may be separately attached to the case side using attachment means such as a bolt.

  Furthermore, in the airbag apparatus M of the embodiment, the left edge 50c (the leading edge) of the pillar cover portion 50 that is away from the support inflating portion 56 in the cover inflating portion 49 is connected to the case 33 side by the connecting belt 60. Therefore, when the airbag 42 is deployed and inflated, the left edge 50c side of the pillar cover portion 50 can be prevented from being significantly lifted from the vehicle body (the windshield 7), and the cover inflating portion 49 that is inflated causes the front pillar 10 to expand. The front surface 10a side can be covered quickly. In addition, when the pedestrian is received, the cover inflating portion 49 can be prevented from moving so as to deviate from the front pillar 10 due to the pressing force of the pedestrian. It can be taken accurately. Of course, if such a point is not taken into consideration, an airbag having no connection belt may be used.

  In the embodiment, since the tip 60b of the connecting belt 60 is connected to the case 33 using the bolt 38a of the inflator 37, it is necessary to separately use a connecting means for connecting the tip of the connecting belt. In addition, the number of parts can be reduced, and the inflator 37 and the tip 60b of the connecting belt 60 can be attached to the case 33 at the same time, so that the number of manufacturing steps can be reduced. Of course, if such a point is not taken into consideration, the connecting belt 60 may not be fastened together with the inflator 37, and may be separately attached to the case side using attachment means such as a bolt.

  In the embodiment, the airbag 42 is a flat bag in which the peripheral edges of the vehicle outer side wall 43a and the vehicle body side wall 43b having the same outer shape are combined. May use a three-dimensional bag or the like in which the cover inflating portion and the supporting inflating portion are formed as separate bags and are connected at predetermined positions so as to communicate with each other. Further, in the embodiment, the bag main body 43 is constituted by a bag weave, but of course, the bag main body may be constituted by a suture bag in which peripheral edges are joined together using a suture thread. Furthermore, the shape of the bag body in the airbag is not limited to the above, and for example, an airbag 42A shown in FIGS. 11 and 12 or an airbag 42B shown in FIGS. In these airbags 42A and 422B, the bag main bodies 43A and 43B have substantially the same outer shape as the bag main body 43 in the airbag 42 described above, and the shape and arrangement position of the partition portions formed in the region are the same as those described above. The airbag 42 is different. The connection belt 60 used for the airbags 42A and 42B has the same configuration as the connection belt 60 of the airbag 42 described above.

  In the region of the bag main body 43A of the airbag 42A shown in FIG. 11, three partition parts 63, 64, and 65 are disposed. The partition part 63 includes a horizontal bar part 63a formed substantially along the left-right direction so as to extend rightward from a boundary part between the vertical area part 43c and the horizontal area part 43d in the peripheral part 44A, and a right end of the horizontal bar part 63a. And a vertical bar portion 63b disposed substantially along the front-rear direction so as to extend to both front-rear sides. The vertical bar portion 63b is disposed at a position that is substantially the center in the left-right direction of the vertical region portion 43c. The partition portion 64 is formed substantially along the front-rear direction so as to extend rearward from the front portion 44c in the peripheral edge portion 44A at a position in front of the right end of the vertical region portion 43c. The rear end of the partition part 64 is formed at a position substantially coincident with the front end of the vertical bar part 63b in the partition part 63 on the left-right direction side. The partition portion 65 is formed in the vicinity of the right end of the lateral region portion 43d so as to extend forward from the rear side portion 44d of the peripheral edge portion 44 in a substantially linear shape along the front-rear direction. The partition part 65 partitions the connection expansion part 51A and the support expansion part 56A. The partition portion 65 is configured to provide a gap between the front end and the front portion 44c in the peripheral edge portion 44, and this gap defines the communication portion 58A that allows the support expansion portion 56A and the connection expansion portion 51A to communicate with each other. And make up. And in this bag main body 43A, as shown in FIG. 11, the vertical bar part 63b of the partition part 63 will be arrange | positioned in the area | region of the pillar cover part 50A, and in the bag main body 43A, the partition parts 63 and 65, A substantially rectangular region in a plan view surrounded by the rear end of the partition portion 64 constitutes a cell 53A that expands in a substantially rod shape substantially along the vertical direction. That is, in the airbag 42A, the cell 53A is disposed on the rear end side when the expansion of the connection inflating portion 51A is completed so as to enter the region of the pillar cover portion 50A.

  In the region of the bag main body 43B of the airbag 42B shown in FIG. 13, three partition portions 67, 68, 65B are arranged. The partition portion 67 is formed substantially along the front-rear direction so as to extend forward from the front portion 44c in the peripheral portion 44A in the region of the vertical region portion 43c. The partition portion 67 is disposed at a position that is substantially the center in the left-right direction of the vertical region portion 43c. The partition portion 68 is formed substantially along the front-rear direction so as to extend forward from the boundary portion between the vertical region portion 43c and the horizontal region portion 43d in the peripheral portion 44A. It has a substantially elliptical thickness restricting portion 68a along the direction. As in the bag main body 43A described above, the partition portion 65B has a substantially linear shape along the front-rear direction in the vicinity of the right end of the lateral region portion 43d so as to partition the connection expansion portion 51B and the support expansion portion 56B. It is formed so as to extend forward from the rear portion 44 d of the peripheral edge portion 44. And also in this bag main body 43B, as shown in FIG. 12, the division part 67 is arrange | positioned in the area | region of the pillar cover part 50B. Moreover, in this bag main body 43B, the area | region of the front side of the thickness control part 68a of the division part 68 comprises the cell 53B which expand | swells in the substantially rod shape along the up-down direction in the connection expansion part 51B. Become.

  In these airbags 42A and 42B, the pillar cover portions 50A and 50B are divided into two chambers along the left and right direction by the vertical bar portion 63b and the partition portion 67 of the partition portion 63 that do not allow the inflation gas to flow. Therefore, when the inflation of the airbags 42A and 42B is completed, the pillar cover portions 50A and 50B can be prevented from expanding with a substantially circular cross section, and the expansion completed shape is prevented from being excessively thick. The front surface 1a of the front pillar 1 can be covered in a wide range from side to side. The arrangement position of such a partition part is not restricted to airbag 42,42A, 42B, It can change arbitrarily according to the external shape etc. of a vehicle.

  In the embodiment, the airbag device M is mounted on a portion of the mounting base 29 in the door mirror 27. However, the mounting position of the airbag device is not limited to this, and the front door near the front side of the door mirror is used. Alternatively, an airbag device may be mounted on a portion of the vehicle body located near the front side of the door Milan and in front of the front door. The airbag device of the present invention can also be mounted in the case of a vehicle having a fender mirror and a front door without a door mirror. In such a vehicle, the front door and the front door It can be mounted at a position on the body side of the vehicle located in the front and in the vicinity of the lower end of the front pillar.

1 ... Front pillar,
1a ... the front,
1b ... the original part,
13 ... Front door,
14 ... side window,
27 ... door mirror,
33 ... Case,
37 ... Inflator,
38a ... bolt (attachment means),
42, 42A, 42B ... airbags,
43a ... car outer wall,
43b ... side wall of vehicle body,
45, 46 ... partition section,
49 ... cover expansion part,
50 ... pillar cover,
50c ... Left edge (front edge),
51... Connected expansion part,
51c ... lower surface,
53 ... Cell,
56 ... Support expansion part,
56a ... original part,
56b ... tip,
57 ... insertion hole,
60 ... connecting belt,
60a ... original part,
60b ... tip,
61 ... insertion hole,
P: Storage part,
V ... Vehicle,
M: Airbag device.

Claims (6)

An airbag apparatus configured to include an airbag capable of covering a front side of a region extending from a lower end side base portion to a tip end of a front pillar of a vehicle, and an inflator for supplying inflation gas to the airbag. And
The airbag is
A structure that is folded and stored in a storage portion disposed near a belt line on the side surface of the vehicle below the front pillar, and that expands while flowing into the storage portion by inflating a gas for expansion. And
A cover inflating portion arranged so as to cover an area extending from the lower area of the front pillar to the front surface of the front pillar when the expansion is completed;
A support expansion part that is disposed on the lower surface side of the cover expansion part so that the lower surface side is supported by the vehicle body side member and supports the lower surface side of the cover expansion part when expansion is completed;
And is configured to include
An inflator for supplying an inflation gas to the airbag is built in the cover inflating portion, and is attached to the storage site together with the cover inflating portion,
The support inflating part is
The base part side is connected to the cover inflating part, and the edge part on the tip side is attached to the storage part,
When the inflation of the airbag is completed, the airbag is folded with respect to the cover inflating portion, and the wall portion on the cover inflating portion side is brought into contact with the wall portion constituting the cover inflating portion, An air bag device interposed between the cover inflating portion. The cover inflating portion is disposed so as to cover the front side of the front pillar when the expansion is completed, and the pillar cover portion and the support are disposed so as to cover the side surface of the front pillar when the expansion is completed. A connecting inflating part for connecting the inflating part,
The pillar cover portion and the connecting expansion portion are configured to contact the vehicle body side wall portion disposed on the front pillar side when the expansion is completed and the vehicle outer side wall portion disposed to face the vehicle body side wall portion. It is configured to be mutually partitioned by the partition section configured as
The airbag device according to claim 1, wherein the inflator is built in the connected inflating portion.   The connected inflating portion has a cell that expands in a substantially rod shape substantially along the vertical direction so as to extend from the base portion of the support inflating portion to the pillar cover portion when the inflation of the airbag is completed. The airbag device according to claim 2.   The edge part of the said support expansion part is attached to the said storage site | part using the attachment means which attaches the said inflator to the said storage site | part, The Claim 1 characterized by the above-mentioned. Airbag device. The airbag includes a connecting belt that extends from a leading edge side away from the support inflating portion in the cover inflating portion, and that has a leading end coupled to the storage portion.
The connecting belt is configured to be disposed between the cover inflating portion and the front pillar when the air bag is completely inflated, and to pull the leading edge portion toward the storage site. The airbag device according to any one of claims 1 to 4, wherein:   6. The airbag device according to claim 5, wherein a leading end of the connection belt is connected to the storage part using an attaching means for attaching the inflator to the storage part.

Images