JP2016040154A - Airbag device for front passenger seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an airbag device for a front passenger seat which can smoothly protect an occupant who moves toward an oblique front side by using an airbag which is completed in inflation.SOLUTION: An airbag device for a front passenger seat comprises an airbag 15 which is folded and accommodated in an accommodation region at a front side of an occupant MP which is seated on a front passenger seat PS. An occupant protection part 32 which protects the occupant MP in the airbag 15 has a front collision constraint face 33 which can protect a head MH of the occupant MP at a front collision, and an oblique collision constraint face 34 which can protect the head MH of the occupant MP at an oblique collision or an offset collision. A cross region between the front collision constraint face 33 and the oblique collision constraint face 34 is arranged in a position in which the cross region is located at the occupant MP side rather than a cross point P1 between virtual extension lines L1, L2 which are obtained by extending the front collision constraint face 33 and the oblique collision constraint face 34 in the vicinity of the cross region at a cross section of the airbag 15 at the completion of inflation. The cross region constitutes an occupant receiving face 35 which can receive the head MH of the occupant MP.SELECTED DRAWING: Figure 17

Description

  The present invention is folded and stored in a storage part provided in an instrument panel arranged in front of a passenger seated in a passenger seat, and inflated with gas flowing inside to protrude toward the rear side of the vehicle. The present invention relates to an airbag device for a passenger seat equipped with an airbag that is inflated and can protect an occupant.

  Conventionally, as an airbag device for a passenger seat, the airbag projects rearward from a main body portion covering the front of an occupant seated in the passenger seat when inflation is completed, and from the vicinity of the left and right end portions on the rear end side of the main body portion. There existed a thing provided with a projection part (for example, refer to patent documents 1-3).

JP-A-2-303951 JP-A-8-324373 JP 2010-201980 A

  In these conventional passenger-side airbag devices, the airbag is configured to have a protruding portion so that, in addition to the front of the occupant seated in the passenger seat, the front side of the passenger seat can be covered obliquely when the inflation is completed. . However, in these conventional passenger-side airbag devices, the protruding portion is configured as a bag partly communicating with the main body, so that it protrudes with a large step with respect to the main body. When the vehicle is in an oblique collision or offset collision, the occupant's head that moves diagonally forward is received locally by this projecting part. In some cases, the head could not be restrained so that the passenger's head could not be accurately received.

  An object of the present invention is to solve the above-described problems, and to provide an airbag device for a passenger seat that can smoothly protect an occupant moving obliquely forward with an airbag that has been inflated. And

An airbag device for a passenger seat according to the present invention is folded and stored in a storage portion provided in an instrument panel disposed in front of an occupant seated in a passenger seat, and an inflation gas is caused to flow into the rear of the vehicle An airbag device for a passenger seat, comprising an airbag that is inflated so as to protrude toward the side and is configured to protect an occupant,
The airbag is configured as an occupant protection part capable of protecting the occupant on the rear side when the inflation is completed,
The occupant protection unit protects the front collision restraint surface that can protect the occupant's head that moves forward during a vehicle front collision, and the occupant's head that moves diagonally forward in the event of an oblique or offset collision. A possible constraining surface for oblique projections,
The oblique projection restraining surface is formed so as to protrude rearward from the front projection restraining surface on at least one of the left and right sides of the front projection restraining surface,
An imaginary extension line in which the intersection between the front-projection restraint surface and the oblique-projection restraint surface extends the front-projection restraint surface and the oblique-projection restraint surface in the vicinity of the intersecting portion in the cross section of the airbag when the inflation is completed. The structure is characterized in that the occupant receiving surface is configured to be shifted and intersected at a position closer to the occupant side than the mutual intersection and to be able to receive the occupant's head.

  In the passenger seat airbag device of the present invention, the occupant protection portion disposed on the occupant side when the airbag is completely inflated is formed so as to protrude rearward from the front collision restraint surface and the front collision restraint surface. And a constraining surface for oblique projection. In the airbag device for a passenger seat according to the present invention, the intersection of the front impact restraint surface and the oblique impact restraint surface is the front impact restraint in the vicinity of the intersection in the cross section of the airbag when the inflation is completed. It is configured so as to be shifted and crossed at a position that is closer to the occupant side than the intersection of the virtual extension lines extending the surface and the constraining surface for oblique projection. And this intersection site | part comprises the passenger | crew receiving surface which can receive a passenger | crew's head. Therefore, in the passenger seat airbag device of the present invention, at the time of the oblique collision or offset collision of the vehicle, the occupant's head moving obliquely forward is crossed between the front collision restraint surface and the oblique collision restraint surface. It can be restrained by the occupant receiving surface formed on the part, and at this time, the front side of the occupant's head and the left and right sides of the occupant's head can be The two sides of the occupant can be restrained substantially simultaneously, and the occupant's head can be restrained in a wide range. Therefore, in the passenger seat airbag device of the present invention, the occupant's head that moves obliquely forward is smoothly received by the front collision restraint surface, the oblique projection restraint surface, and the occupant receiving surface. Can do.

  Therefore, in the passenger seat airbag device of the present invention, an occupant moving diagonally forward can be protected smoothly by the airbag that has been inflated.

  Specifically, in the passenger seat airbag device of the present invention, the occupant-receiving surface may be constituted by the outer peripheral wall itself of the inflated portion of the airbag, or separate from the outer peripheral wall of the inflated portion of the airbag. It is arranged in such a way that it is connected to the front impact restraint surface, and is used for front impact so as to bridge over the recess formed in the area near the intersection of the front impact restraint surface and the oblique impact restraint surface. You may comprise from the flexible cloth material arrange | positioned connected with the restraint surface and the restraint surface for oblique projection.

  Further, in the passenger seat airbag device having the above-described configuration, if the constraining surface for oblique projection is arranged on the driver's seat side of the constraining surface for front collision, the front passenger seat can be installed in the passenger seat at the time of an oblique collision or an offset collision. When the seated occupant moves toward the diagonally forward side that is the front side in the left-right direction, the occupant's head can be protected accurately, which is preferable.

  Further, in the airbag device for a passenger seat having the above-described configuration, the airbag is inflated to cover the steering wheel in front of the driver seat in the front region of the restraint surface for the oblique projection when the inflation is completed. If the contact surface that contacts the wheel airbag is formed, the airbag when the head of the occupant moving diagonally forward is received by the restraining surface for the oblique projection and the occupant receiving surface, It can be supported by the steering wheel airbag, which can protect the occupant more precisely, which is preferable.

1 is a schematic cross-sectional view showing a state in which a passenger seat airbag device according to a first embodiment of the present invention is mounted on a vehicle. 1 is a schematic plan view of a state in which a passenger seat airbag device according to a first embodiment is mounted on a vehicle. 1 is a schematic front view of a state in which a passenger seat airbag device according to a first embodiment is mounted on a vehicle. It is a perspective view of the state seen from the back left which shows the state where the airbag used with the airbag apparatus for passenger seats of a 1st embodiment was inflated alone. It is a perspective view of the state seen from the back right side which shows the state which expanded the airbag of FIG. 4 alone. It is a perspective view of the state seen from the front right side which shows the state which expanded the airbag of FIG. 4 alone. It is a schematic longitudinal cross-sectional view of the airbag of FIG. It is a schematic longitudinal cross-sectional view of the airbag of FIG. It is a schematic cross-sectional view of the airbag of FIG. It is a figure which shows the XX site | part of FIG. It is a top view which shows the base fabric which comprises the airbag of 1st Embodiment. It is a top view which shows the base fabric which comprises the airbag of 1st Embodiment. It is the schematic explaining the process of manufacturing the airbag of 1st Embodiment. It is the schematic explaining the process of manufacturing the airbag of 1st Embodiment, and shows the process after FIG. It is the schematic explaining the process of manufacturing the airbag of 1st Embodiment, and shows the process after FIG. FIG. 3 is a schematic front view of the passenger seat airbag device according to the first embodiment in a state in which the airbag is completely inflated. FIG. 3 is a schematic cross-sectional view of the passenger seat airbag device according to the first embodiment in a state in which the airbag is completely inflated. FIG. 3 is a schematic cross-sectional view of the passenger seat airbag device according to the first embodiment in a state in which the airbag is completely inflated. It is the perspective view of the state seen from back left which shows the state which expanded the airbag used with the airbag apparatus for passenger seats of 2nd Embodiment of this invention alone. It is the perspective view of the state seen from the back right side which shows the state which expanded the airbag of FIG. 19 alone. It is the perspective view of the state seen from the front right which shows the state which expanded the airbag of FIG. 19 alone. It is a schematic longitudinal cross-sectional view of the airbag of FIG. FIG. 20 is a schematic cross-sectional view of the airbag of FIG. 19. It is a figure which shows the XXIV-XXIV site | part of FIG. It is a top view which shows the base fabric which comprises the airbag of 2nd Embodiment. It is a top view which shows the base fabric which comprises the airbag of 2nd Embodiment. It is the schematic explaining the process of manufacturing the airbag of 2nd Embodiment. It is the schematic explaining the process of manufacturing the airbag of 2nd Embodiment, and shows the process after FIG. It is the schematic explaining the process of manufacturing the airbag of 2nd Embodiment, and shows the process after FIG. It is the schematic explaining the process of manufacturing the airbag of 2nd Embodiment, and shows the process after FIG. It is the schematic explaining the process of manufacturing the airbag of 2nd Embodiment, and shows the process after FIG. FIG. 6 is a schematic front view of the passenger seat airbag device according to the second embodiment in a state in which the airbag is completely inflated. FIG. 6 is a schematic cross-sectional view of a passenger seat airbag device according to a second embodiment in a state in which the airbag is completely inflated. FIG. 6 is a schematic cross-sectional view of a passenger seat airbag device according to a second embodiment in a state in which the airbag is completely inflated. It is the perspective view of the state seen from the back right side which shows the state which expanded the airbag used with the airbag apparatus for passenger seats of 3rd Embodiment of this invention alone. FIG. 36 is a schematic cross-sectional view of the airbag of FIG. 35. It is a top view which shows the base fabric which comprises the airbag of 3rd Embodiment. It is a top view which shows the base fabric which comprises the airbag of 3rd Embodiment. It is the schematic explaining the process of manufacturing the airbag of 3rd Embodiment. It is the schematic explaining the process of manufacturing the airbag of 3rd Embodiment, and shows the process after FIG. It is the schematic explaining the process of manufacturing the airbag of 3rd Embodiment, and shows the process after FIG. It is the schematic explaining the process of manufacturing the airbag of 3rd Embodiment, and shows the process after FIG. It is the schematic explaining the process of manufacturing the airbag of 3rd Embodiment, and shows the process after FIG. FIG. 6 is a schematic cross-sectional view of a passenger seat airbag device according to a third embodiment in a state in which the airbag is completely inflated. It is the perspective view of the state seen from the back right side which shows the state which expanded the airbag which is 4th Embodiment of this invention alone. FIG. 46 is a schematic cross-sectional view of the airbag of FIG. 45. FIG. 10 is a schematic cross-sectional view of a passenger seat airbag device according to a fourth embodiment in a state in which the airbag is completely inflated. It is the schematic explaining another example of a manufacturing process in the process of manufacturing the airbag of a 2nd embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the passenger seat airbag device M <b> 1 of the first embodiment is provided on the upper surface 2 of the instrument panel (hereinafter, “instrument panel”) 1 in front of the passenger seat PS in the vehicle V. It is a top mount type that is placed inside. In the embodiment, the front-rear, up-down, left-right directions are the same as the front-rear, up-down, left-right directions of the vehicle V unless otherwise specified.

  As shown in FIG. 1, the passenger seat airbag apparatus M1 of the first embodiment includes a folded airbag 15, two inflators 8 and 8 that supply inflation gas to the airbag 15, and the airbag 15. And the case 12 as a storage part for storing and holding the inflators 8, 8, the airbag 15, the two retainers 9, 9 for attaching each inflator 8 to the case 12, and the air covering the folded airbag 15. And a bag cover 6.

  The airbag cover 6 is formed integrally with the instrument panel 1 made of synthetic resin, and when the airbag 15 is deployed and inflated, the front and rear door portions 6a and 6b are pushed by the airbag 15 and opened. It is configured. Further, a connecting wall portion 6 c connected to the case 12 is formed around the door portions 6 a and 6 b in the airbag cover 6.

  In the case of the embodiment, the two inflators 8 are arranged side by side in the left-right direction as shown in FIG. Each inflator 8 includes a substantially cylindrical main body portion 8 a having a plurality of gas discharge ports 8 b and a flange portion 8 c for attaching the inflator 8 to the case 12. In the case of the embodiment, each inflator 8 is configured to operate during frontal collision, oblique collision, and offset collision of the vehicle V.

  The case 12 as a storage part is formed in a substantially rectangular parallelepiped shape made of a sheet metal having a rectangular opening on the upper end side, and a bottom wall portion 12a having a substantially rectangular plate shape to which each inflator 8 is inserted and attached from below, And a peripheral wall portion 12b extending upward from the outer peripheral edge of the wall portion 12a and locking the connection wall portion 6c of the airbag cover 6. In the case of the embodiment, the airbag 15 and each inflator 8 are provided with the bolts 9a of the retainers 9 disposed in the airbag 15 as attachment means, the periphery of the gas inlet 21 in the airbag 15, and the bottom of the case 12 The wall portion 12 a and the flange portion 8 c of the inflator 8 are passed through and fixed to the bottom wall portion 12 a of the case 12 by being fastened with a nut 10. In the embodiment, the retainer 9 disposed on the left side is used to connect a later-described connecting member 45 formed on the airbag 15 to the tip (the tip 47 a of the lateral piece 47) side of the bottom wall of the case 12. It is connected to the part 12a. Further, a bracket (not shown) connected to the body side of the vehicle V is disposed on the bottom wall portion 12 a of the case 12.

  In the case of the embodiment, as shown in FIGS. 4 and 7 to 9, the airbag 15 is inflated by allowing inflation gas to flow therein, and the airbag 15 is disposed in the bag body 16 to expand the bag body 16. The tethers 37, 40, 41, 42, and 43 that restrict the completed shape, and a connecting member 45 that connects the front edge side of the bag body 16 when the bag body 16 is inflated to the case 12 side are provided.

  The bag body 16 is formed into a bag shape formed from a flexible sheet body. In the case of the embodiment, as shown in FIGS. And a projecting and expanding part 29 disposed so as to project rearward from the rear surface side of the expanding part 17.

  As shown by a two-dot chain line in FIG. 1, the main body inflating portion 17 is configured to be disposed so as to close the space between the upper surface 2 of the instrument panel 1 and the windshield 4 above the instrument panel 1 when the inflation is completed. Specifically, as shown in FIGS. 4 to 6, the main body inflating portion 17 has a substantially triangular prism shape with the axial direction extending in the left-right direction when the expansion is completed. It is set as the structure provided with the attaching part 20 attached to the case 12 in the front end side. In other words, the main body inflating portion 17 is attached to the case 12 on the right front end side when the expansion is completed, and when the expansion is completed, as shown in FIGS. It is the structure arrange | positioned. Further, the main body inflating portion 17 has a rear side wall portion 27 disposed on the rear surface side that is the occupant MP side when the inflating is completed, and extends from the periphery of the rear side wall portion 27 to the front side and decreases the width dimension in the vertical direction toward the front end side. And a tapered peripheral wall portion 18 that converges in this manner.

  The peripheral wall portion 18 is a portion that is disposed so as to mainly block the space between the upper surface 2 of the instrument panel 1 and the windshield 4 above the instrument panel 1 when the airbag 15 is completely inflated. The upper wall portion 18a and the lower wall portion 18b are disposed on the left and right sides, and the left wall portion 18c and the right wall portion 18d are disposed substantially along the front-rear direction. An attachment portion 20 for attaching the airbag 15 to the case 12 partially protrudes forward in a state where the airbag 15 is inflated as a single unit at the right front end portion of the peripheral wall portion 18 when the inflation is completed. (See FIG. 9). The attachment portion 20 is a portion disposed in the case 12 when the inflation of the airbag 15 is completed, and is substantially arranged so that inflation gas can flow into the lower surface side (lower wall portion 18b side) when the inflation is completed. Two gas inflow ports 21 having a circular opening and having a peripheral edge attached to the bottom wall portion 12a of the case 12 are provided side by side along the left-right direction. A plurality (four in the case of the embodiment) for inserting the bolts 9a of the retainer 9 into the peripheral edge of each gas inlet 21 and attaching the peripheral edge of each gas inlet 21 to the bottom wall portion 12a of the case 12 is provided. Each of the attachment holes 22 is formed. In the case of the embodiment, as shown in FIGS. 9 and 17, the airbag 15 has the center in the left-right direction of the attachment portion 20 (the portion that is the center between the centers of the gas inlets 21 and 21) as the attachment center C <b> 1. The mounting center C1 is attached to the case 12 and mounted on the vehicle V so as to coincide with the center in the left-right direction of the passenger seat PS. In addition, vent holes 24 and 24 are formed in the left wall portion 18c and the right wall portion 18d of the peripheral wall portion 18 for exhausting excess inflation gas that has flowed into the inside.

  Further, as shown in FIG. 9, the main body inflating portion 17 of the embodiment has a region located on the left side of the center line CL1 along the front-rear direction passing through the attachment center C1 when the expansion is completed, on the right side of the center line CL1. The left wall portion 18c of the peripheral wall portion 18 that becomes the driver's seat DS side when the expansion is completed is at least occupant MP. When the vehicle is received, it is configured to come into contact with an airbag 74 for a steering wheel, which will be described later, so as to cover the steering wheel 70 disposed in front of the driver seat DS. In the case of the embodiment, in the left wall portion 18c, a region on the front side of an occupant receiving surface 35 to be described later, specifically, the head of the occupant MP that moves toward the left diagonally forward at the time of an oblique collision or an offset collision of the vehicle V. The region on the left side of the moving direction of the part MH and the region on the front side of the protruding inflating portion 29 constitutes the contact surface 25 that is brought into contact with the steering wheel airbag 74 when the occupant MP is received ( (See FIG. 18). Further, the airbag 15 of the embodiment supports the instrument panel 1 on the lower surface side of the left front end side portion (the portion to which the connecting member 45 is connected) away from the case 12 in the main body inflating portion 17 when the inflation is completed. It is configured to let you.

  The rear side wall portion 27 is disposed so as to be substantially along the vertical direction on the rear surface side that is the occupant MP side when the airbag 15 is inflated. In the case of the embodiment, as shown by a two-dot chain line in FIG. 1, the rear side wall portion 27 is disposed so as to be slightly inclined with respect to the vertical direction so that the lower end side is directed rearward. Further, the rear side wall portion 27 is arranged so as to be substantially along the left-right direction in the cross section along the front-rear direction when the airbag 15 is completely inflated. In the case of the embodiment, the rear side wall portion 27 is slightly positioned so that the intersection with the center line CL1 along the front-rear direction passing through the attachment center C1 is positioned on the rearmost side, and both the left and right ends are directed frontward. It will be curved and arranged (see FIGS. 17 and 18). In FIG. 9, the rear side wall portion 27 is linear, but actually, when the expansion is completed, as shown in FIGS. 17 and 18, the rear side wall portion 27 is arranged to be curved. . On the rear side wall portion 27, a protruding inflating portion 29 that is inflated so as to protrude rearward when the inflation of the airbag 15 is completed is disposed (see FIGS. 4 to 9). Specifically, the protruding inflatable portion 29 is formed in the upper left part of the rear side wall portion 27 when the inflation is completed, and the head of the occupant MP seated in the passenger seat PS when the inflation of the airbag 15 is completed. It will be arranged at a position that is diagonally left front of the part MH (see FIGS. 16 to 18).

  The protruding inflating portion 29 is configured to communicate with the main body inflating portion 17 on the front end side when the expansion is completed, and to flow inflating gas into the inside from the main inflating portion 17 through the communicating portion 30 on the front end side ( 9 and 10), an upper wall portion 29a and a lower wall portion 29b arranged substantially along the left-right direction on both upper and lower sides, and a left wall portion 29c and a right wall portion arranged substantially along the front-rear direction on both left and right sides. 29d and a rear wall portion 29e disposed substantially along the vertical direction on the rear side. In the case of the embodiment, the upper wall portion 29a and the left wall portion 29c are configured so as to be continuous from the upper wall portion 18a and the left wall portion 18c of the peripheral wall portion 18, respectively (see FIGS. 4 to 6 and 9). . As shown in FIGS. 5 and 9, the right wall portion 29 d is configured such that the vicinity of the intersection with the rear side wall portion 27 is curved so as to be smoothly connected to the rear side wall portion 27. This right wall portion 29d is substantially flat in the left-right direction in a cross section along the front-rear direction when the airbag 15 is completely inflated. It arrange | positions so that it may follow along the front-back direction so that it may be substantially orthogonal to the rear side wall part 27 arrange | positioned along (refer FIG. 9).

  In the cross section along the front-rear direction when the airbag 15 is completely inflated, the protruding inflatable portion 29 does not straddle the center line CL1 along the front-rear direction passing through the attachment center C1, and is on the left side of the center line CL1 (driving) In the case of the embodiment, the width dimension on the left and right side when expansion is completed is set to the left and right side when expansion of the main body expansion portion 17 is completed. The width is about ½ of the width dimension. In addition, the protruding inflating portion 29 has a width dimension in the vertical direction at the time when the inflation is completed, and can accurately protect the head MH of the occupant MP that moves obliquely forward during an oblique collision or an offset collision of the vehicle V. Is set to Specifically, the projecting and expanding portion 29 sets the width dimension on the vertical direction side to about 2/5 of the width dimension on the vertical direction side when the expansion of the portion in the vicinity of the rear side wall portion 27 in the main body expanding portion 17 is completed. Has been. Further, when the airbag 15 is completely inflated, the projecting and inflating portion 29 is disposed so as to project rearward from the steering wheel airbag 74 that has been inflated, as shown in FIG. Furthermore, in the case of the embodiment, since the airbag 15 is inflated so as to curve the rear side wall portion 27, the protruding inflatable portion 29 attached to the rear side wall portion 27 is located on the right side when the inflation of the airbag 15 is completed. Inclined with respect to the left-right direction so as to be directed backward (see FIG. 17). The flat surface portion 29db of the right wall portion 29d of the protruding inflatable portion 29 is also inclined with respect to the front-rear direction so that the rear end side is directed to the left and right inner sides (left side) when the inflation of the airbag 15 is completed. Will be.

  In the airbag 15 of the embodiment, the protruding inflating portion 29 and the rear side wall portion 27 in the main body inflating portion 17 constitute an occupant protection portion 32 that can protect the occupant MP when the inflation of the airbag 15 is completed. ing. The occupant protection unit 32 moves forward obliquely at the time of an oblique collision or offset collision of the vehicle V, and the front collision restraint surface 33 that can protect the head MH of the occupant MP that moves forward at the time of the vehicle V collision. A slanting constraining surface 34 that can protect the head MH of the occupant MP, and an occupant receiving surface 35 that is disposed at the intersection of the front constraining restraining surface 33 and the slanting constraining surface 34. .

  In the case of the embodiment, the front collision restraint surface 33 is composed of a region on the upper side of the rear side wall portion 27, and is composed of a region disposed on the right side of the protruding expansion portion 29 when expansion is completed. That is, the front collision restraint surface 33 includes a region extending to the left side (driver's seat DS side) beyond the center line CL1 along the front-rear direction passing through the attachment center C1, and the head of the occupant MP moving forward during a front collision. The part MH can be protected without hindrance. The front-projection restraint surface 33 is arranged so as to be substantially along the left-right direction in a cross-section substantially along the front-rear direction when the airbag 15 is completely inflated. Specifically, the front collision restraint surface 33 is formed to be slightly curved so that a portion near the center line CL1 is located on the rear side and both left and right ends are directed to the front side (see FIG. 17). .

  The oblique projection restraining surface 34 is composed of a right wall portion 29 d of the projecting and expanding portion 29. Specifically, the slanting constraining surface 34 is composed of a flat surface portion 29db which is a rear region of the right wall portion 29d. In other words, in the airbag 15 of the embodiment, the oblique collision restraint surface 34 is disposed only on the left side of the front collision restraint surface 33 on the driver seat DS side. Further, since the projecting and expanding portion 29 is disposed at an inclination, the oblique protrusion restraining surface 34 is disposed at an inclination so that the rear side is directed leftward with respect to the front-rear direction as shown in FIG. Is done. The occupant receiving surface 35 disposed at the intersection of the front-projection restraint surface 33 and the oblique-projection restraint surface 34 is formed on the front end side of the right wall portion 29d and the flat portion 29db of the right wall portion 29d and the rear side wall. It is comprised from the curved part 29da formed by making it curve so that the part 27 may be connected smoothly. In the embodiment, the front-projection restraint surface 33 and the oblique-projection restraint surface 34 are arranged so as to be substantially orthogonal to each other in the transverse cross section of the airbag 15 when the inflation is completed. The occupant receiving surface 35 constituted by the intersecting portion with the restraining surface 34 is an intersection P1 between the virtual extension lines L1 and L2 extending from the constraining surface 33 and the oblique restraining surface 34 in the vicinity of the intersecting portion. In the rear right side position, which is closer to the occupant MP side, the oblique restraint restraint surface 34 and the front impact restraint surface 33 are arranged so as to be smoothly connected to each other (FIGS. 9 and 17). reference). That is, the occupant receiving surface 35 is formed to be curved so that the head MH of the occupant MP can be received smoothly.

  In the airbag 15 of the embodiment, the region below the occupant protection unit 32 in the rear side wall portion 27 indicates that the occupant MP moving forward moves the occupant MP when the head MH is restrained by the occupant protection unit 32. I will receive the chest mainly.

  In the case of the embodiment, five tethers 37, 40, 41, 42, 43 are arranged in the bag body 16 as shown in FIGS. Specifically, the bag body 16 includes a front and rear tether 37 disposed so as to connect the vicinity of the gas inlet 21 in the main body inflating portion 17 and the rear side wall portion 27, and a left wall portion 18 c in the main body inflating portion 17. Left and right tethers 40 arranged to connect the right wall portion 18d, and two upper and lower tethers 41, 42 arranged to connect the upper wall portion 18a and the lower wall portion 18b in the main body inflating portion 17, There are five control tethers 43 arranged in the vicinity of the communication part 30 on the front end side of the protruding inflating part 29.

  In the embodiment, the front / rear tether 37 is disposed so as to be positioned on the center line CL1 along the front / rear direction passing through the attachment center C1 when the airbag 15 is completely inflated (see FIG. 9). The front part 38 extending from the peripheral edge of the inflow port 21 and the rear part 39 extending from the rear side wall part 27 are connected to each other.

  In the case of the embodiment, the front side portion 38 is configured by folding the front side portion material 63 shown in FIG. 11, and has an outer shape at the time when the expansion of the bag body 16 is completed as a bilaterally symmetric shape around the attachment center C <b> 1. Is a three-dimensional shape approximating a substantially triangular pyramid shape with the front end side extending substantially in the horizontal direction and the rear end side extending substantially in the vertical direction. In the case of the embodiment, as shown in FIGS. 8 and 9, the front portion 38 has a region on the front end side as a connecting portion 38 a to the bag body 16, the connecting portion 38 a, the gas inlet 21 and the attachment hole 22. Corresponding openings (not shown) are arranged and are sewn to the lower surface side portion of the attachment portion 20 in the main body inflating portion 17 at the peripheral portion of the gas inlet 21 over the entire periphery. And in the front side part 38, the area | region extended back from the gas inflow port 21 comprises the main-body part 38b, and makes the external shape of this main-body part 39b into the solid shape approximated to substantially triangular pyramid shape. The main body portion 38b substantially matches the vertical width dimension of the rear end portion 38c side portion sewn to the front end 39a side of the rear portion portion 39 with the vertical width dimension of the rear end portion 39 side portion of the front end 39a side. It is configured to let you.

  In the case of the embodiment, the rear portion 39 extends in the form of a sheet from the rear left panel 56 and the inner peripheral edges 56d and 57c of the rear right panel 57 constituting the rear side wall portion 27 of the main body inflating portion 17, and the rear left panel 56 , And extending portions 56e and 57d configured integrally with the rear right panel 57 (see FIGS. 8 and 9). In other words, the rear side portion 39 is formed integrally with the rear left panel 56 and the rear right panel 57 in a two-layered manner. Specifically, in the case of the embodiment, the rear portion 39 has a narrow width on the front end 39a side connected to the front portion 38, and the regions on the rear end side are the inner peripheral edges 56d of the rear left panel 56 and the rear right panel 57. , 57c, and a substantially trapezoidal shape that expands vertically. The front / rear tether 37 regulates the separation distance from the peripheral portion of the gas inlet 21 of the rear side wall 27 when the inflation of the airbag 15 is completed, and the rear side wall 27 is placed on the occupant MP side in the initial stage of inflation of the airbag 15. It arrange | positions in order to suppress protruding largely backwards.

  In the case of the embodiment, the left and right tethers 40 are arranged in the left-right direction so as to connect the approximate center of the left wall 18c and the approximate center of the right wall 18d when the inflation of the airbag 15 is completed, as shown in FIG. It is formed into a strip shape arranged substantially along, and is configured by joining two tether base fabrics 40a and 40b arranged side by side in the left-right direction. The left and right tethers 40 regulate the separation distance between the left wall portion 18c and the right wall portion 18d in the main body inflating portion 17 when the inflating of the airbag 15 is completed. The left wall portion 18c and the right wall portion 18d are disposed in order to prevent the left wall portion 18c and the right wall portion 18d from being expanded so as to be separated from each other.

  In the case of the embodiment, the two upper and lower tethers 41 and 42 are juxtaposed on the left and right direction side with the front and rear tether 37 interposed therebetween so as to match the position on the front and rear direction side. As shown in FIG. 9, it is arranged in the vicinity of the front side of the left and right tethers 40, and is formed in a strip shape arranged substantially along the vertical direction so as to connect the upper wall portion 18a and the lower wall portion 18b, respectively. (See FIGS. 7 and 8). Each of the upper and lower tethers 41 and 42 is configured by joining two tether base fabrics 41a, 41b, 42a, and 42b arranged side by side in the vertical direction. In the airbag 15 of the embodiment, since the main body inflating portion 17 is configured to inflate so as to largely protrude to the left side, the upper and lower tethers 41 disposed on the left side of the front and rear tethers 37 have a width in the left and right direction side. The dimension is set to be larger than the width dimension of the upper and lower tethers 42 arranged on the right side of the front and rear tethers 37 in the left and right direction. Specifically, the width dimension of the upper and lower tethers 41 on the left and right direction side is set to about four times the width dimension of the upper and lower tethers 42 on the left and right direction side. These upper and lower tethers 41 and 42 regulate the separation distance between the upper wall portion 18a and the lower wall portion 18b in the main body inflating portion 17, so that the main body inflating portion 17 and the upper wall portion 18a are in the initial stage of inflation. It arrange | positions in order to suppress expanding | deploying so that the lower wall part 18b may be separated widely.

  In the case of the embodiment, the restriction tether 43 is disposed substantially along the vertical direction at a position slightly left of the left and right centers in the portion of the communicating portion 30 of the projecting and expanding portion 29 (see FIG. 9). Specifically, the regulation tether 43 is a belt-like shape arranged so as to connect the vicinity of the front edge of the upper wall portion 29a and the lower wall portion 29b in the projecting and expanding portion 29, as shown in FIG. The two tether base fabrics 43a and 43b arranged side by side in the vertical direction are combined. The restriction tether 43 is disposed in order to restrict the separation distance between the upper wall portion 29a and the lower wall portion 29b in the vicinity of the boundary portion (near the communication portion 30) with the main body expansion portion 17 in the protruding expansion portion 29. .

  In the embodiment, as shown in FIGS. 6 and 9, the connecting member 45 that connects the front edge side of the bag body 16 when the inflation is completed is connected to the case 12 side of the body expansion portion 17 (bag body 16) when the inflation is completed. It is formed so as to extend from the left front end side. In the embodiment, as shown in FIG. 9, the connecting member 45 includes a vertical piece portion 46 arranged to extend forward from the left front end side of the main body inflating portion 17, and a right side from the front end side of the vertical piece portion 46. A lateral piece 47 arranged substantially along the left-right direction so as to extend in the direction, and attach the airbag 15 to the case 12 in the case of the embodiment, with the tip 47a side (right end side) of the lateral piece 47 in the embodiment. The left retainer 9 is used to fix the airbag 15 together with the attachment portion 20 to the case 12 side. The connecting member 45 is disposed in order to stably inflate the airbag 15 (bag body 16) that is deployed so as to largely protrude from the case 12 toward the rear left side.

  The bag body 16 is configured in a bag shape by joining the peripheral edges of a base fabric having a predetermined shape. In the case of the embodiment, as shown in FIGS. 48, lower panel 49 disposed on the lower side when the expansion is completed, left panel 51 disposed on the left side when the expansion is completed, right panel 54 disposed on the right side when the expansion is completed, rear left disposed on the rear side when the expansion is completed The panel 56, the rear right panel 57, the upper panel 59U for the projecting part that constitutes the upper part of the projecting and expanding part 29, the lower panel 59D for the projecting part that constitutes the lower part of the projecting and expanding part 29, and the projecting and expanding part 29 base fabrics of the projecting portion side panel 60 constituting the portion from the rear side to the right side of 29, four reinforcing fabrics 64 for reinforcing the peripheral edge of the gas inlet 21, The front edge side on the bottom side when expansion is complete A reinforcing cloth 65 for strong, a protective fabric 66 for protecting the peripheral edge portion of the gas inlet 21 from the inflation gas, and a.

  The upper panel 48 constitutes a part of the upper wall part 18a in the main body inflating part 17 when the expansion is completed, and the lower panel 49 constitutes a part of the lower wall part 18b in the main body inflating part 17 when the expansion is completed. Yes. The upper panel 48 and the lower panel 49 have substantially the same outer shape, and are provided with projecting portions 48 a and 49 a that constitute the mounting portion 20.

  The left panel 51 constitutes a portion from the left wall portion 18c to the left wall portion 29c of the projecting inflating portion 29 in the main body inflating portion 17 when the inflating is completed. As shown in FIG. A substantially rectangular projecting portion 53 constituting the left wall portion 29c of the projecting and expanding portion 29 is connected to the upper end side of the substantially triangular main body portion 52 constituting the left wall portion 18c. The right panel 54 constitutes a portion of the right wall portion 18d in the main body inflating portion 17 at the time of completion of expansion, and has an outer shape of a substantially triangular shape.

  The rear left panel 56 and the rear right panel 57 are configured to divide the portion of the rear side wall portion 27 in the main body inflating portion 17 at the time of completion of the expansion into left and right. Constitutes the left side region from the center line CL1 along the front-rear direction passing through the attachment center C1 in the rear side wall portion 27, and the rear right panel 57 constitutes the right side region from the center line CL1 in the rear side wall portion 27. (See FIG. 9). The rear left panel 56 has a shape such that the upper left region is cut out so as to allow the projecting and expanding portion 29 to communicate with each other (see FIG. 12). On the inner peripheral edges 56d and 57c side of the rear left panel 56 and the rear right panel 57, extending portions 56e and 57d constituting the rear portion 39 of the front and rear tether 37 are formed.

  The projection upper panel 59U constitutes a portion of the upper wall portion 29a in the projection inflation portion 29 when the expansion is completed, and the projection lower panel 59D constitutes a portion of the lower wall portion 29b in the projection inflation portion 29 when the inflation is completed. Is configured. As shown in FIG. 12, the protrusion upper panel 59U and the protrusion lower panel 59D have substantially the same substantially rectangular shape, and the front end faces rightward on the front end side of the right edge 59d. And has a curved edge portion 59e formed to be curved. The protrusion side panel 60 has an outer shape that is wide and rectangular in the left-right direction, and forms a portion from the rear wall portion 29e to the right wall portion 29d in the protrusion expansion portion 29 when expansion is completed. In the airbag 15 of the embodiment, the curved shape (curved edge portion 59e) of the right edge 59d of each of the protrusion upper panel 59U and the protrusion lower panel 59D is the right of the protrusion inflatable portion 29 when the inflation is completed. The curved shape of the curved portion 29da of the wall portion 29d (the curved shape of the occupant receiving surface 35) is shaped. Further, in the airbag 15 according to the embodiment, in front of the straight portion 59f which is a straight region (region on the rear side of the curved edge 59e) of the right edge 59d of the upper panel 59U for protrusion and the lower panel 59D for protrusion. The inclination angle with respect to the edge 59a defines the inclination angle with respect to the rear side wall portion 27 of the right wall portion 29d of the protruding inflating portion 29 when the expansion is completed (inclination angle with respect to the front collision restraining surface 33 of the oblique collision restraining surface 34). Thus, in the case of the embodiment, the straight part 59f of the right edge 59d is formed so as to be substantially orthogonal to the front edge 59a.

  In the embodiment, four reinforcing cloths 64 that reinforce the peripheral portion of the gas inlet 21 are arranged in a rectangular shape as shown in FIG. As shown in FIG. 11, the protective cloth 66 has a substantially rectangular shape that is slightly larger than the reinforcing cloth 64, and is stitched at the periphery of the gas inlet 21 (specifically, with the upper panel 48. Covering the inner peripheral surface side of the stitched portion (not shown) where the front edges 48b and 49b are sewn together with the lower panel 49, the stitched portion can be protected from the inflation gas (see FIG. (See FIG. 9). As shown in FIG. 11, the reinforcing cloth 65 that reinforces the lower surface side portion on the front end side of the main body inflating portion 17 is a long length that covers the region on the front edge side of the lower panel 49 over the entire region including the mounting portion 20. It is made into a shape. In the case of the embodiment, the reinforcing cloths 64 and 65 and the protective cloth 66 are sewn to the lower panel 49 at a part that becomes the periphery of the gas inlet 21 together with the front part 38 of the front and rear tether 37.

  In the embodiment, the upper panel 48, the lower panel 49, the left panel 51, the right panel 54, the rear left panel 56, the rear right panel 57, the protruding portion upper panel 59 </ b> U, the protruding portion lower panel 59 </ b> D, which constitute the bag body 16. The protrusion side panel 60, the reinforcing cloths 64 and 65, the protective cloth 66, the front part material 63 constituting the front and rear tethers 37, the tether base cloths 40a and 40b constituting the left and right tethers 40, and the upper and lower tethers 41 and 42 are provided. The tether base fabrics 41a, 41b, 42a, and 42b, the tether base fabrics 43a and 43b that constitute the restriction tether 43, and the vertical piece portion 46 and the horizontal piece portion 47 that constitute the connecting member 45 are respectively polyester. It is formed from a flexible woven fabric made of yarn or polyamide yarn.

  A steering wheel airbag device 73 is mounted on the steering wheel 70 disposed in front of the driver seat DS disposed on the left side of the passenger seat PS. The steering wheel airbag device 73 includes a steering wheel airbag (hereinafter abbreviated as “airbag”) 74 that is folded and housed in a central boss portion 71 of the steering wheel 70, and an inflation gas in the airbag 74. And an inflator not shown. The airbag 74 is formed into a bag shape formed of a flexible sheet body, and when an inflator (not shown) is operated, an inflation gas from the inflator is caused to flow into the interior, so that the upper surface (rear surface) of the steering wheel 70 is It is the structure which expand | swells so that it may cover the whole surface. As shown in FIGS. 16 and 18, the airbag 74 has a substantially disk shape with a larger outer diameter than the ring portion 72 of the steering wheel 70 as shown in FIGS. 16 and 18. The ring portion 72 is configured to be supported. The inflator (not shown) of the steering wheel airbag device 73 is also activated during frontal collision, oblique collision, and offset collision of the vehicle V, similarly to the inflator 8 of the passenger airbag device M1. It is configured.

  Next, manufacture of the airbag 15 of embodiment is demonstrated. The upper panel 48 and the lower panel 49 are preliminarily sewn with one end side of the tether base fabrics 41a, 41b, 42a, 42b using sutures, and the left panel 51, the right panel 54, respectively. In addition, one end sides of the tether base fabrics 40a and 40b are sewn in advance. Further, the reinforcing cloths 64 and 65, the protective cloth 66, and the front portion material 63 are sewn to the lower panel 49. Further, one end side of the tether base fabric 43a is sewn to the front edge 59a side of the upper panel 59U for protrusion.

  First, as shown in FIGS. 13A and 13B, the front edge 59a of the projecting portion lower panel 59D is sewn to the upper left edge 56f of the rear left panel 56. At this time, one end side of the tether base fabric 43b is also sewn together. Next, the right edge 60 d of the protrusion side panel 60 is sewn to the upper right edge 56 g of the rear left panel 56. After that, as shown in FIGS. 13B and 13C, the rear edge 59b and the right edge 59d of the protruding portion lower panel 59D are sewn to the lower edge 60b of the protruding portion side panel 60. Next, as shown in FIG. 13C and FIG. 14A, the rear edge 59b and the right edge 59d of the protrusion upper panel 59U are sewn to the upper edge 60a of the protrusion side panel 60. Thereafter, as shown in FIGS. 14A and 14B, the inner peripheral edges 56 d and 57 c of the rear left panel 56 and the rear right panel 57 are sewn together to form the rear side wall portion 27. At the same time, the end portions of the tether base fabrics 43a and 43b are sewn together to form the regulation tether 43 (see B in FIG. 14).

  Next, as shown in FIG. 14C and FIG. 15A, the upper panel 48 is arranged on the upper edges 56a and 57a of the rear left panel 56 and the rear right panel 57, and the front edge 59a of the upper panel 59U for protrusion. The rear edge 48c is sewn. The rear edge 49c of the lower panel 49 is sewn to the lower edges 56b and 57b of the rear left panel 56 and the rear right panel 57. Thereafter, as shown in FIG. 15A, the upper edge 52a, the upper edge 53a, the rear edge 53c, the lower edge 53b, the rear edge 52c, and the lower edge 52b of the left panel 51 are sequentially arranged on the left edge 48d, The left edge 59c of the protrusion upper panel 59U, the left edge 60c of the protrusion side panel 60, the left edge 59c of the protrusion lower panel 59D, the left edge 56c of the rear left panel 56, and the left edge 49d of the lower panel 49 Let them sewn. Next, the upper edge 54a, the rear edge 54c, and the lower edge 54b of the right panel 54 are sequentially sewn to the right edge 48e of the upper panel 48, the right edge 57e of the rear right panel 57, and the right edge 49e of the lower panel 49. . Thereafter, the front edges 48b and 49b of the upper panel 48 and the lower panel 49 are sewn together so as to sandwich the vertical piece portion 46 of the connecting member 45, thereby forming the bag body 16 in a bag shape.

  Then, the bag main body 16 is reversed using one gas inflow port 21 so that the seam allowance is not exposed to the front side. Next, using one gas inlet 21, the rear end 38 c of the front part 38 is sewn to the front end 39 a of the rear part 39 to form the front and rear tethers 37, and the ends of the tether base fabrics 40 a and 40 b The left and right tethers 40 are formed by sewing the portions together, and the upper and lower tethers 41 and 42 are formed by sewing the ends of the tether base fabrics 41a, 41b, 42a, and 42b, respectively. Then, if the horizontal piece part 47 is connected with the vertical piece part 46b of the connection member 45, as shown to B of FIG. 15, the airbag 15 can be manufactured.

  The airbag 15 thus manufactured is folded so as to be housed in the case 12 with the retainers 9 and 9 housed therein, and the folded airbag 15 is broken so as not to collapse. Wrapping with a possible wrapping sheet (not shown). Next, the folded airbag 15 is placed on the bottom wall portion 12 a of the case 12. The body portion 8a of each inflator 8 is inserted into the case 12 from below the bottom wall portion 12a, and each bolt 9a protruding downward from the bottom wall portion 12a is inserted into the flange portion 8c of the inflator 8. Then, if the nut 10 is fastened to each bolt 9a protruding from the flange portion 8c of the inflator 8, the airbag 15 and the inflators 8 and 8 folded on the case 12 can be attached.

  Then, the peripheral wall portion 12b of the case 12 is locked to the connecting wall portion 6c of the airbag cover 6 in the instrument panel 1 mounted on the vehicle V, and a bracket (not shown) of the case 12 is fixed to the body side of the vehicle V. Thus, the passenger seat airbag device M1 can be mounted on the vehicle V.

  In the passenger seat airbag device M1 of the first embodiment, when mounted on the vehicle V, from the gas discharge ports 8b of the inflators 8 at the time of frontal collision, oblique collision, or offset collision of the vehicle V. When the inflation gas is discharged, the airbag 15 is inflated by flowing the inflation gas into the interior, and pushes and opens the door portions 6a and 6b of the airbag cover 6. The airbag 15 protrudes upward from the case 12 through an opening formed by pushing and opening the door portions 6a and 6b of the airbag cover 6, and expands and inflates while protruding toward the vehicle rear side. As shown in the two-dot chain line in FIGS. 1 to 3 and FIGS. 16 to 18, the expansion is completed so as to close the space between the upper surface 2 of the instrument panel 1 and the windshield 4 above the instrument panel 1. At this time, the airbag 74 for the steering wheel also completes the inflation so that the inflation gas flows into the interior and covers the upper surface (rear surface) of the steering wheel 70 (see FIGS. 16 and 18). ).

  In the passenger seat airbag device M1 of the first embodiment, the occupant protection part 32 disposed on the occupant MP side when the airbag 15 is inflated is rearward from the front collision restraint surface 33 and the front collision restraint surface 33. And a constraining surface for oblique projection formed so as to project toward the surface. In the passenger seat airbag apparatus M1 according to the first embodiment, as shown in FIG. 17, the airbag 15 at the time when the inflation is completed is formed at the intersection between the front-projection restraint surface 33 and the oblique-projection restraint surface 34. In the cross section, the front collision restraint surface 33 and the oblique collision restraint surface 34 in the vicinity of the intersecting part are shifted and crossed at a position closer to the occupant MP side than the intersection P1 between the virtual extension lines L1 and L2. It is configured as such. And this intersection site | part comprises the passenger | crew receiving surface 35 which can receive the head MH of passenger | crew MP. Specifically, in the passenger seat airbag device M1 of the first embodiment, the occupant receiving surface 35 formed by the intersection of the front collision restraining surface 33 and the oblique collision restraining surface 34 is provided with the oblique collision restraint. The surface 34 and the front collision restraint surface 33 are arranged so as to be smoothly connected. Therefore, in the passenger seat airbag device M1 of the first embodiment, the head MH of the occupant MP that moves obliquely forward at the time of an oblique collision or an offset collision of the vehicle V is inclined with the front collision restraint surface 33. The vehicle can be restrained by an occupant receiving surface 35 formed at an intersection with the projecting restraint surface 34. At this time, as shown by a two-dot chain line in FIG. By means of the projecting restraint surface 34, the front side of the head MH of the occupant MP and the two sides of the left and right sides (left side in the embodiment) can be restrained substantially simultaneously. The part MH can be restrained in a wide range. Therefore, in the passenger seat airbag device M1 of the first embodiment, the head MH of the occupant MP moving obliquely forward is set to the front collision restraint surface 33, the oblique collision restraint surface 34, and the occupant reception. The surface 35 can be received smoothly.

  If the airbag is configured not to include the slanting constraining surface and simply extend the front constraining constraining surface to the left, when the head MH of the occupant MP is received, the head MH Although the behavior of turning in the clockwise direction when viewed from above occurs, the airbag 15 according to the embodiment includes the slanting constraining surface 34. It is possible to restrain the head MH of the occupant MP by suppressing the turning behavior. In addition, in the embodiment, an occupant receiving surface 35 that smoothly connects both the oblique collision restraining surface 34 and the front collision restraining surface 33 is formed. The MH can be received in a wide area from the oblique collision restraining surface 34 through the occupant receiving surface 35 to the front collision restraining surface 33, and the turning behavior of the head MH can be further suppressed.

  Accordingly, in the passenger seat airbag device M of the first embodiment, the occupant MP moving toward the diagonally forward side can be smoothly protected by the airbag 15 that has been inflated.

  Further, in the passenger seat airbag device M of the first embodiment, since the slanting restraint surface 34 is disposed on the driver seat DS side of the front impact restraining surface 33, When the occupant MP seated on the passenger seat PS moves toward the diagonally forward side that is the front side in the left-right direction at the time of the offset collision, the head MH of the occupant MP can be protected accurately. . In the embodiment, the occupant protection part 32 of the airbag 15 is configured such that the oblique collision restraint surface 34 is disposed only on the driver seat DS side (left side) of the front collision restraint surface 33. Of course, if the above points are not taken into consideration, the constraining surface for oblique projection may not be provided on the driver's seat side, but may be arranged only on the right side which is the vehicle exterior side of the constraining surface for front collision, Furthermore, it is good also as a structure which arrange | positions the constraining surface for oblique projections on the right and left sides of the constraining surface for frontal collisions.

  Further, in the passenger seat airbag apparatus M1 of the first embodiment, the steering wheel is placed in front of the driver seat DS in the region on the front side of the restraint surface 34 for the oblique projection when the airbag 15 receives the occupant MP when the inflation is completed. Since the contact surface 25 that contacts the steering wheel airbag 74 that inflates so as to cover 70 is formed (see the two-dot chain line in FIG. 18), the head MH of the occupant MP that moves diagonally forward Can be supported by the steering wheel airbag 74 that is inflated so as to be supported by the ring portion 72, and the occupant can receive the airbag 15 when it is received by the slanted constraining surface 34 and the occupant receiving surface 35. MP can be protected more accurately. In particular, in the airbag 15 according to the embodiment, the main body inflating portion 17 is arranged so as to largely protrude toward the driver's seat DS when the inflating is completed, and the portion of the left wall portion 18c of the main body inflating portion 17 is placed on the occupant. When the MP is received, the configuration is such that it is brought into contact with the steering wheel airbag 74 when the inflation is completed. Therefore, the occupant MP moving obliquely forward is inflated thickly and supported by the steering wheel airbag 74. Therefore, the occupant MP can be received smoothly.

  Next, the airbag 80 which is 2nd Embodiment of this invention is demonstrated. In the case of the embodiment, as shown in FIGS. 19 to 24, the airbag 80 is inflated by introducing an inflating gas into the airbag 80, and the airbag body 81 is disposed in the bag body 81 and the inflation completion shape of the bag body 81 is formed. Tethers 37A, 105, and 106, and a connecting member 45A for connecting the front edge side of the bag body 81 when the bag body 81 is completely inflated to the case 12 side. The connecting member 45A has the same configuration as that of the connecting member 45 in the airbag 15 described above, and therefore, the same reference numeral is appended with “A” and detailed description thereof is omitted.

  The bag body 81 is formed into a bag shape formed from a flexible sheet body. In the case of the embodiment, as shown in FIGS. And a projecting and expanding part 93 disposed so as to project rearward from the rear surface side of the expanding part 82.

  As shown in FIGS. 19 and 20, the main body inflating part 82 has a slightly flattened inflated shape as compared with the main body inflating part 17 of the airbag 15 described above. And the windshield 4 above the instrument panel 1 are arranged so as to be closed. The main body inflating part 82 is configured to include an attaching part 85 attached to the case 12 on the right front end side when the inflating is completed. Similarly to the main body inflating portion 17, the main body inflating portion 82 is also arranged so that the right front end side at the time of completion of expansion is attached to the case 12 and greatly protrudes to the left side that becomes the driver's seat DS side at the time of completion of expansion. (See FIGS. 32 to 34). Further, the main body inflating portion 82 has a rear side wall portion 91 disposed on the rear surface side that is the occupant MP side when the inflating is completed, and extends from the periphery of the rear side wall portion 91 to the front side and decreases the vertical width dimension toward the front end side. And a tapered peripheral wall portion 83 that converges in this manner.

  The peripheral wall portion 83 is a portion that is disposed so as to mainly block the space between the upper surface 2 of the instrument panel 1 and the windshield 4 above the instrument panel 1 when the airbag 80 is completely inflated. The upper wall portion 83a and the lower wall portion 83b are disposed on the left and right sides, and the left wall portion 83c and the right wall portion 83d are disposed substantially along the front-rear direction. An attachment portion 85 for attaching the airbag 80 to the case 12 partially protrudes forward in a state where the airbag 80 is inflated as a single unit at the right front end portion of the peripheral wall portion 83 when the inflation is completed. (See FIG. 29). The attachment portion 85 is a portion arranged in the case 12 when the inflation of the airbag 80 is completed, and is substantially arranged so that inflation gas can flow into the lower surface side (lower wall portion 83b side) when the inflation is completed. Two gas inflow ports 86 that are opened in a circular shape and whose peripheral edges are attached to the bottom wall portion 12a of the case 12 are provided side by side along the left-right direction. Four attachment holes 87 through which the bolts 9a of the retainer 9 are inserted are formed in the periphery of each gas inlet 86. As shown in FIG. 33, the airbag 80 also has a vehicle center V2 in which the center in the left-right direction of the attachment portion 85 is set as the attachment center C2, and the center of attachment C2 coincides with the center in the left-right direction of the passenger seat PS. It is mounted on. A vent hole 88 is formed in the left wall 83c and the right wall 83d of the peripheral wall 83.

  Also in the airbag 80, when the inflation is completed, the main body inflating portion 82 is a region located on the left side of the center line CL2 along the front-rear direction passing through the attachment center C2 and located on the right side of the center line CL2. The left wall portion 83c of the peripheral wall portion 83 on the driver seat DS side when the expansion is completed is configured to be larger and bulge to the left side (driver seat DS side) (see FIGS. 23 and 33). The vehicle is configured to come into contact with the airbag 74 for the steering wheel when the occupant is received. In the airbag 80 as well as the airbag 15 described above, the left wall 83c has a region on the front side of an occupant receiving surface 100 described later. The region on the left oblique front side of the moving direction of the head MH of the occupant MP moving obliquely forward, and the region on the front side of the projecting inflating portion 93 is in contact with the airbag 74 for the steering wheel when receiving the occupant MP. The contact surface 89 is configured (see FIG. 34). The airbag 80 of the embodiment also supports the instrument panel 1 on the lower surface side of the left front end side portion (the portion to which the connecting member 45A is connected) away from the case 12 in the main body inflating portion 82 when the inflation is completed. It is configured to let you.

  The rear side wall portion 91 is arranged so as to be substantially along the vertical direction on the rear surface side that is the occupant MP side when the airbag 80 is completely inflated. In the case of the embodiment, specifically, the rear side wall portion 91 is disposed so as to be slightly inclined downwardly with respect to the vertical direction when the airbag 80 is completely inflated (see FIG. 22). Further, in the cross section along the front-rear direction when the airbag 80 is completely inflated, the rear side wall 91 has the most intersecting portion (the connection position of the front-rear tether 37A) intersecting the center line CL2, as shown in FIG. It is arranged in a curved manner so that it is positioned rearward and the left and right edges are positioned on the front side. A projecting and inflating portion 93 that inflates so as to project rearward when the airbag 80 is completely inflated is disposed on the rear side wall portion 91 (see FIGS. 19 to 23). The protruding inflating portion 93 is formed in the rear side wall portion 91 at the upper left part when the inflation is completed, and when the airbag 80 is completely inflated, the head MH of the occupant MP seated in the passenger seat PS. It will be arranged at a position that is diagonally forward left (see FIGS. 32 to 34).

  In the case of the embodiment, the projecting and expanding portion 93 has a communication hole portion 94 (FIG. 23, FIG. 23) formed so as to penetrate the rear wall portion 91 and the front wall portion 93e of the projecting and expanding portion 93 on the front end side when the expansion is completed. 24), the expansion gas is introduced into the main body expansion portion 82 through the communication hole portion 94. The projecting and expanding portion 93 includes an upper wall portion 93a and a lower wall portion 93b that are disposed along substantially the left and right sides on both upper and lower sides, and a left wall portion 93c and a right wall portion 93d that are disposed along substantially the front and rear directions on both left and right sides. And a front wall portion 93e and a rear wall portion 93f that are disposed substantially along the left-right direction on both the front and rear sides. The front wall portion 93e is formed with a communication hole portion 94 in which four openings 94a opened in a substantially rectangular shape are arranged side by side in the vertical and horizontal directions, and the projecting and expanding portion 93 communicates with the front wall portion 93e. The outer portion 95a of the peripheral portion 95 of the hole portion 94 is connected to the main body expanding portion 82 by being sewn to the rear side wall portion 91 over the entire circumference (see FIGS. 23 and 24). As shown in FIGS. 20 and 23, the right wall portion 93 d is configured to be curved so that the vicinity of the intersection with the rear side wall portion 91 is smoothly connected to the rear side wall portion 91. In the case of the embodiment, the right wall portion 93d has a flat side portion 93db that is flat on the rear side of the curved region on the front end side. Is disposed so as to intersect with a neighboring portion 91a disposed on the right side of the right wall portion 93d at an acute angle (see FIG. 23). Specifically, in the embodiment, the crossing angle α (see FIG. 23) between the plane portion 93db and the neighboring portion 91a is set to about 75 °.

  Also in the airbag 80, as shown in FIG. 23, the projecting inflating portion 93 has a center line CL2 along the front-rear direction passing through the attachment center C2 in a cross section along the front-rear direction when the airbag 80 is inflated. Is formed in a region on the left side (driver's seat DS side) of the center line CL2. In the case of the embodiment, the protruding inflating portion 93 has a width dimension on the left and right side at the time of completion of expansion about half of the width dimension on the left and right side at the time of completion of expansion of the main body inflating portion 82. The width dimension on the vertical direction side is set to about 3/5 of the width dimension on the vertical direction side when the expansion of the portion near the rear side wall 91 in the main body expansion portion 82 is completed. Also in the airbag 80, when the airbag 80 is completely inflated, the protruding inflating portion 93 is disposed so as to protrude rearward from the steering wheel airbag 74 that has been inflated (FIG. 34). reference). Further, since the airbag 80 is inflated so as to curve the rear side wall portion 91, the protruding inflating portion 93 attached to the rear side wall portion 91 is directed so that the right side faces rearward when the inflation of the airbag 80 is completed. In this case, they are arranged to be inclined with respect to the left-right direction (see FIGS. 33 and 34). The flat surface portion 93db of the right wall portion 93d of the protruding inflating portion 93 is also inclined with respect to the front-rear direction so that the rear end side is directed to the left and right inner sides (left side) when the inflation of the airbag 80 is completed. Will be.

  Also in the airbag 80 of this embodiment, the protruding inflating portion 93 and the rear side wall portion 91 in the main body inflating portion 82 constitute an occupant protection portion 97 that can protect the occupant MP when the inflation of the airbag 80 is completed. Yes. The occupant protection unit 97 moves forward obliquely at the time of an oblique collision or offset collision of the vehicle V and the front collision restraint surface 98 that can protect the head MH of the occupant MP that moves forward at the time of the vehicle V collision. A slanting constraining surface 99 capable of protecting the head MH of the occupant MP, and a occupant receiving surface 100 disposed at the intersection of the front constraining constraining surface 98 and the slanting constraining surface 99 are provided. .

  The front-projection restraint surface 98 is composed of a region on the upper side of the rear side wall portion 91, and is composed of a region disposed on the right side of the projecting and expanding portion 93 when expansion is completed. That is, the front collision restraint surface 98 includes a region extending on the left side (driver's seat DS side) beyond the center line CL2 along the front-rear direction passing through the attachment center C2 in the rear side wall 91, and moves forward during a front collision. The head MH of the occupant MP can be protected without hindrance. In the case of the embodiment, the front collision restraint surface 98 is configured to be curved so that the portion near the center line CL2 is positioned most rearward and the right end side is directed to the front side (see FIG. 33). .

  The oblique projection restraining surface 99 is configured by a right wall portion 93 d of the projecting and expanding portion 93. In detail, the slanting constraining surface 99 is composed of a flat surface portion 93db of the right wall portion 93d. That is, also in the airbag 80 of the embodiment, the oblique collision restraint surface 99 is disposed only on the left side of the front collision restraint surface 98 on the driver seat DS side. Further, since the projecting and expanding portion 93 is disposed to be inclined, the oblique protrusion restraining surface 99 is disposed to be inclined so that the rear side is directed leftward with respect to the front-rear direction. And the passenger | crew receiving surface 100 arrange | positioned in the cross | intersection site | part of the restraint surface 98 for front protrusions, and the restraint surface 99 for oblique projections is a flat wall part 93db of the right wall part 93d, and a rear side wall in the front end side of the right wall part 93d. It is comprised from the curved part 93da formed by making it curve so that the part 91 may be continued smoothly. In the embodiment, in the rear wall portion 91, the region that is in the vicinity of the right wall portion 93 d of the projecting and expanding portion 93 is formed substantially along the vertical direction so as to pass on the center line CL <b> 2 in the rear wall portion 91. A portion 102 (a portion in which inner peripheral edges 112c and 113c of a rear left panel 112 and a rear right panel 113, which will be described later, are sewn together), and a stitched portion 103 in which a protruding inflated portion 93 is sewn to the rear side wall portion 91; Are disposed close to each other in the left-right direction, and therefore, the vicinity portion 91a disposed on the right side of the right wall portion 93d in the rear side wall portion 91 is regulated by these stitching portions 102 and 103, and the airbag is In the cross section along the front-rear direction at the time of completion of the expansion of 80, it will be arranged substantially linearly (see FIG. 23). And in the airbag 80 of embodiment, the vicinity part 91a which comprises the front collision restraint surface 98, and the oblique restraint restraint surface 99 are comprised in the cross section along the front-back direction at the time of completion | finish of inflation of the airbag 80. The plane wall portion 93db of the right wall portion 93d is disposed so as to intersect at an acute angle. The occupant receiving surface 100 formed by the intersection (curved portion 93da) between the front-projection restraint surface 98 and the oblique-projection restraint surface 99 has a front-projection restraint surface 98 and an oblique-projection restraint surface 99 near the intersection. The slanted constraining surface 99 and the front constraining surface 98 are gently connected at a position shifted to the right rear side on the occupant MP side from the intersection P2 between the virtual extension lines L3 and L4. It arrange | positions so that it may become (refer FIG. 23, 33). That is, the occupant receiving surface 100 is formed to be curved so that the occupant's head can be received smoothly.

  In the case of the embodiment, three tethers 37A, 105, and 106 are arranged in the bag body 81 as shown in FIGS. Specifically, in the bag main body 81, the front and rear tethers 37 </ b> A are arranged so as to connect the vicinity of the gas inlet 86 in the main body inflating portion 82 and the rear side wall portion 91, and the protruding inflating portion 93. The upper and lower tethers 105 and the regulation tether 106 are arranged. Since the front / rear tether 37A has the same configuration as the front / rear tether 37 in the airbag 15, the detailed description thereof will be omitted by adding "A" to the end of the same reference numeral.

  The upper and lower tethers 105 are disposed substantially along the vertical direction so as to connect the upper wall portion 93a and the lower wall portion 93b of the projecting and expanding portion 93 (see FIG. 24). In the case of the embodiment, the upper and lower tethers 105 are formed in a band shape so as to connect the approximate center of the upper wall part 93a and the approximate center of the lower wall part 93b when the airbag 80 is completely inflated. Two tether base fabrics 105a and 105b arranged side by side in the up-down direction side are coupled to each other. The upper and lower tethers 105 are disposed in order to regulate the inflated shape of the protruding inflatable portion 93 when the airbag 80 is inflated.

  The restriction tether 106 is disposed so as to be inclined with respect to the front-rear direction so as to connect the front wall portion 93e and the right wall portion 93d of the projecting and expanding portion 93 (see FIG. 23). In the case of the embodiment, when the airbag 80 is completely inflated, the regulation tether 106 is formed in a belt shape that is arranged so as to connect the approximate left and right centers of the front wall portion 93e and the approximate center before and after the right wall portion 93d. Therefore, the front end side is sewn to the inner part 95b of the peripheral part 95 between the openings 94a arranged side by side in the communication hole part 94 in the front wall part 93e. The regulation tether 106 is configured by joining two tether base fabrics 106a and 106b arranged side by side in the front-rear direction. The restriction tether 106 is disposed to restrict the curved shape of the curved portion 93da (the occupant receiving surface 100 of the occupant protection portion 97) in the protruding inflatable portion 93 when the airbag 80 is completely inflated.

  The bag body 81 is configured in a bag shape by joining the peripheral edges of a base fabric of a predetermined shape. In the case of the embodiment, as shown in FIGS. A peripheral wall panel 108, a rear left panel 112, a rear right panel 113, which constitute a part of the rear side wall 91 in the main body inflating part 82, an upper panel 115U for a projecting part which constitutes an upper part of the projecting inflating part 93, a projecting part 6 base fabrics, ie, a lower panel 115D for projecting portion constituting the lower part of the inflating portion 93 and a side panel 116 for projecting portion constituting the side portion of the projecting inflating portion 93, and the main body expansion The reinforcing cloth 119 that reinforces the region on the front end side when the expansion is completed in the portion 82, the four reinforcing cloths 118 that reinforce the peripheral edge of the gas inlet 86, and the peripheral portion of the gas inlet 86 are protected from the expansion gas. With protective cloth 120 It is constructed from.

  In the case of the embodiment, the peripheral wall panel 108 divides the region of the peripheral wall portion 83 in the main body inflating portion 82 into upper and lower parts, and an upper portion 109 that constitutes an upper portion and a lower portion that constitutes a lower portion, respectively. The upper portion 109 and the lower portion 110 are connected to each other on the front edge side of the mounting portion 85.

  The rear left panel 112 and the rear right panel 113 are configured to divide the portion of the rear side wall 91 in the main body inflating portion 82 at the completion of the expansion into left and right. In the embodiment, the rear left panel 112 is In the rear side wall 91, a left region is formed from the center line CL2 along the front-rear direction passing through the attachment center C2, and the rear right panel 113 forms a right region from the center line CL2 in the rear side wall 91. (See FIG. 23). In the rear left panel 112, four openings 112e constituting the communication hole portion 94 are formed. Further, on the inner peripheral edges 112c and 113c side of the rear left panel 112 and the rear right panel 113, extending portions 112d and 113d constituting the rear portion 39A of the front and rear tether 37A are formed.

  The protruding portion upper panel 115U constitutes a portion of the upper wall portion 93a in the protruding and expanding portion 93 when the expansion is completed, and the protruding portion lower panel 115D is a portion of the lower wall portion 93b in the protruding and expanding portion 93 when the expansion is completed. Is configured. As shown in FIG. 26, the protrusion upper panel 115U and the protrusion lower panel 115D have substantially the same substantially rectangular shape, and the front end faces the right end 115d and faces the right end. In addition, a curved edge 115e formed by bending is provided. The protruding portion side panel 116 is configured as a wide band in the left-right direction, and the front wall portion 93e, the left wall portion 93c, the rear wall portion 93f, and the right wall portion 93d of the protruding and expanding portion 93 when expansion is completed. Is configured. In the case of the embodiment, the protrusion side panel 116 has both ends in the longitudinal direction (left-right direction) positioned at the boundary between the front wall portion 93e and the right wall portion 93d, and the front wall portion 93e and the left wall. The portion 93c, the rear wall portion 93f, and the right wall portion 93d are configured, and the portions on both ends on the longitudinal direction side that constitute the portion between the right end side of the front wall portion 93e and the front end side of the right wall portion 93d are widened. It is comprised so that. Further, the opening side panel 116 for the projecting portion is formed with four openings 116 e constituting the communication hole portion 94.

  In the airbag 80 of the embodiment, the curved shape (curved edge portion 115e) of the right edge 115d of each protruding portion upper panel 115U and protruding portion lower panel 115D is the right wall portion 93d of the protruding inflatable portion 93 when inflation is completed. The curved shape of the curved portion 93da (curved shape of the occupant receiving surface 100) is shaped. Further, in the airbag 80 according to the embodiment, the front of the straight portion 115f that is the straight region (region on the rear edge side of the curved edge 115e) of the right edge 115d of the upper panel 115U for protrusion and the lower panel 115D for protrusion. The inclination angle with respect to the edge 115a defines the inclination angle of the right wall portion 93d of the protruding inflatable portion 93 when the expansion is completed (the inclination angle of the oblique collision restraining surface 99 with respect to the front collision restraining surface 98). In the embodiment, the straight portion 115f of the right edge 115d intersects the front edge 115a at an intersection angle of about 75 °.

  The four reinforcing cloths 118 that reinforce the peripheral portion of the gas inlet 86 have a substantially rectangular outer shape. The protective cloth 120 has a substantially rectangular shape whose outer shape is slightly larger than that of the reinforcing cloth 118, and stitched portions (specifically, the upper portion 109 and the lower portion of the peripheral wall panel 108). Covering the inner peripheral surface side of the stitched portion (not shown) that is sewn between the edges of the stitched portion 110, the stitched portion can be protected from the inflation gas (see FIG. 22). As shown in FIG. 25, the reinforcing cloth 119 that reinforces the region on the front end side when the expansion is completed in the main body inflating portion 82 has an outer shape in the vicinity of the connection portion between the upper portion 109 and the lower portion 110 in the peripheral wall panel 108. The outer shape is configured to cover the entire left and right regions.

  In the embodiment, the peripheral wall panel 108, the rear left panel 112, the rear right panel 113, the protrusion upper panel 115U, the protrusion lower panel 115D, the protrusion side panel 116, the reinforcing cloth 118, which constitute the bag body 81, 119, protective cloth 120, front portion material 63A constituting front and rear tether 37A, tether base cloth 105a and 105b constituting upper and lower tether 105, tether base cloth 106a and 106b constituting regulating tether 106, and connecting member The vertical piece portion 46A and the horizontal piece portion 47A constituting 45A are each formed from a flexible woven fabric made of polyester yarn, polyamide yarn or the like.

  Next, manufacture of the airbag 80 of embodiment is demonstrated. It should be noted that one end side of the tether base fabrics 105a and 105b is previously sewn to the protrusion upper panel 115U and the protrusion lower panel 115D using sutures in advance.

  First, as shown in FIG. 27A, a reinforcing cloth 119 is overlapped on the inner peripheral surface side of the peripheral wall panel 108 in a flatly unfolded state, and is sewn to the peripheral wall panel 108. Next, as shown in FIG. 27B and FIG. 28A, the front portion material 63 </ b> A, the reinforcing cloth 118, and the protective cloth 120 are overlaid on the reinforcing cloth 119, and the peripheral edge of the gas inflow port 86. Sewing at the position. Thereafter, the gas inlet 86 and the mounting hole 87 are formed by drilling. Next, as shown in FIG. 28B, the reinforcing cloth 119 is positioned on the outer peripheral side, the peripheral wall panel 108 is folded back, and the vertical piece portion 46A of the connecting member 45A is sandwiched between the front edge side portions, The front edge 109c, 110c of the upper part 109 and the lower part 110, the left edge 109a, 110a, and the right edge 109b, 110b are sewn together using a suture, and the vertical piece 46A is shared. Sewing.

  Further, the projecting side panel 116 is placed on the outer surface side of the rear left panel 112 so that the positions of the openings 112e and 116e coincide with each other, and the stitched portion 103 is formed at the peripheral portion of the openings 112f and 116e. In this manner, the protruding portion side panel 116 is sewn to the rear left panel 112 (see A in FIG. 29). Next, as shown in FIG. 29B, one end sides of the tether base fabrics 106a and 106b are sewn to the protruding side panel 116, respectively. Thereafter, the front edge 115a of the protrusion upper panel 115U is sewn to the right end region of the upper edge 116a of the protrusion side panel 116, and then as shown in FIG. While the panel 115U and the protrusion side panel 116 are both brought down toward the inner surface of the rear left panel 112, the left edge 115c, the rear edge 115b, and the right edge 115d (curved edge 115e) of the upper panel 115U for protrusion. And the straight portion 115f) are sewn to the remaining portion of the upper edge 116a. Similarly, the front edge 115a of the projecting portion lower panel 115D is sewn to the right end region of the lower edge 116b of the projecting portion side panel 116, and is tilted to the inner surface side of the rear left panel 112. The left edge 115c, the rear edge 115b, and the right edge 115d of the protrusion lower panel 115D are sewn to the remaining portion of the lower edge 116b of the protrusion side panel 116. Next, the upper and lower tethers 105 are formed by sewing the other ends of the tether base fabrics 105a and 105b. Thereafter, the protrusion upper panel 115U, the protrusion lower panel 115D, and the protrusion side panel 116 are connected to the left edge 116c and right edge of the unstitched protrusion side panel 116 so that the seam allowance is not exposed. The rear left panel 112 is flattened by using the gap 116d to invert. Then, using the gap between the left edge 116c and the right edge 116d of the unstitched side panel 116 for the projecting portion, the other ends of the tether base fabrics 106a and 106b are joined to each other to form the regulation tether 106, Then, if the left edge 116c and the right edge 116d of the side panel 116 for protrusion parts are sewn on the rear left panel 112, the protrusion expansion part 93 can be formed as shown to A of FIG. Next, as shown in FIGS. 30A and 30B, if the inner peripheral edges 112c and 113c of the rear left panel 112 and the rear right panel 113 are sewn together using a suture to form the stitched portion 102, The rear side wall part 91 in the state where the projecting and expanding part 93 is attached can be formed.

  Thereafter, as shown in FIGS. 31A and 31B, the projecting inflating portion 93 is directed inward to the peripheral wall panel 108 in which the upper portion 109 and the lower portion 110 are opened so that the rear edges 109d and 110d are separated from each other. The rear left panel 112 and the rear right panel 113 are overlapped, and the rear edge 109d of the upper portion 109 and the upper edges 112a and 113a of the rear left panel 112 and the rear right panel 113 are sewn together. Similarly, the rear edge 110d of the lower portion 110 and the lower edges 112b and 113b of the rear left panel 112 and the rear right panel 113 are sewn. Next, the bag main body 81 can be formed by using one of the gas inlets 86 and reversing so that the seam allowance is not exposed to the outside. Thereafter, using one gas inlet 86, the rear end 38c of the front portion 38A and the front end 39a of the rear portion 39A are sewn together to form the front and rear tether 37A, and then the horizontal piece 46A If the connecting member 45A is formed by sewing the portion 47A, the airbag 80 can be manufactured as shown in FIG. 31C.

  As shown in FIGS. 48A and 48B, on the upper edge 112a side and the lower edge 112b side of the rear left panel 112, the front edge 115a of the protrusion upper panel 115U and the protrusion lower panel 115D first. After that, as shown in FIG. 48C, the protrusion side panel 116 is placed on the outer surface side of the rear left panel 112 so that the positions of the openings 112e and 116e coincide with each other. The airbag 80 may be manufactured by sewing the protruding portion side panel 116 to the rear left panel 112 so as to form the stitched portion 103 at the peripheral portions of 112f and 116e.

  The airbag 80 manufactured as described above can be mounted on a vehicle in the same manner as the airbag 15 described above.

  In the passenger seat airbag device M2 using the airbag 80, the occupant protection portion 97 disposed on the occupant MP side when the airbag 80 is completely inflated includes the front collision restraint surface 98 and the front collision And a constraining surface for oblique projection 99 formed so as to protrude rearward from the constraining surface 98. Also, in the passenger seat airbag device M2 of the second embodiment, as shown in FIG. 33, the intersection portion of the front impact restraint surface 98 and the oblique impact restraint surface 99 is the airbag at the completion of the inflation. In the cross section of 80, the occupant is more than the intersection P2 between the virtual extension lines L3 and L4 extending the restraint surface 98 for the front collision in the vicinity of the intersecting portion (the near portion 91a of the rear side wall 91) and the restraint surface 99 for the oblique projection. It is configured so as to intersect with the MP side. And this intersection site | part comprises the passenger | crew receiving surface 100 which can receive the head MH of passenger | crew MP. In the passenger seat airbag device M2 of the second embodiment, the front collision restraint surface 98 and the oblique collision restraint surface 99 intersect each other at an acute angle, but the front collision restraint surface 98 and the oblique collision restraint. The occupant receiving surface 100 constituted by a portion intersecting with the surface 99 is disposed so that the slanting constraining surface 99 and the front constraining constraining surface 98 are smoothly connected. Therefore, also in the passenger seat airbag device M2 of the second embodiment, the head MH of the occupant MP that moves obliquely forward at the time of the diagonal collision of the vehicle V or the offset collision is the front collision restraint surface 98. It can be restrained by the occupant receiving surface 100 formed at the intersection with the slanting projection restraining surface 99, and at this time, as shown by the two-dot chain line in FIG. By means of the slanting constraining surface 99, the front side of the head MH of the occupant MP and the left and right sides (left side in the case of the embodiment) can be constrained substantially simultaneously. The head MH can be restrained in a wide range. Therefore, also in the passenger seat airbag device M2 of the second embodiment, the head MH of the occupant MP moving obliquely forward is restrained by the front impact restraint surface 98, the oblique impact restraint surface 99, and the occupant reception. The surface 100 can be received smoothly.

  Also, in the passenger seat airbag device M2 of the second embodiment, the oblique collision restraint surface 99 is disposed on the driver seat DS side of the front collision restraint surface 98, so that when the vehicle V obliquely collides. Alternatively, when the occupant MP seated on the passenger seat PS moves toward an oblique front side that is the front side and the front side in the case of an offset collision, the head MH of the occupant MP can be protected accurately. it can.

  Also in the airbag 80 of the second embodiment, an occupant receiving surface 100 that smoothly connects the two is formed between the oblique collision restraining surface 99 and the front collision restraining surface 98. The head MH of the occupant MP can be received in a wide area from the constraining surface 99 for the slant collision through the occupant receiving surface 100 to the constraining surface 98 for the front collision, and the head when the head MH is received. The behavior of turning in the clockwise direction when viewed from above the MH can be accurately suppressed.

  Further, also in the passenger seat airbag device M2 of the second embodiment, the airbag 80 covers the steering wheel 70 in front of the driver seat DS in a region in front of the slanting constraining surface 99 when the inflation is completed. Since the contact surface 89 that contacts the airbag 74 for the steering wheel that is inflated like this is formed (see the two-dot chain line in FIG. 34), the head MH of the occupant MP moving obliquely forward is inclined. The airbag 15 when received by the restraining surface 99 for use and the occupant receiving surface 100 can be supported by the steering wheel airbag 74, and the occupant MP can be protected more accurately. Also, in the airbag 80 of the second embodiment, the main body inflating portion 82 is arranged so as to largely protrude toward the driver's seat DS when the inflating is completed, and the portion of the left wall portion 83c of the main body inflating portion 82 is arranged. Is in contact with the steering wheel airbag 74 when inflation is completed when the occupant MP is received, the occupant MP moving obliquely forward can be received by the main body inflating portion 82 that is inflated thickly. The occupant MP can be received smoothly.

  Next, the airbag 125 which is 3rd Embodiment of this invention is demonstrated. As shown in FIGS. 35 and 36, the airbag 125 has a bag body 126 that is inflated by inflating an inflating gas therein, and a tether 37B that is disposed in the bag body 126 and regulates the expansion completion shape of the bag body 126. , 105B, 106B, and a connecting member 45B that connects the front edge side of the bag body 126 when the bag body 126 is completely inflated to the case 12 side. Since the connecting member 45B has the same configuration as that of the connecting member 45 in the airbag 15, the same reference numeral is appended with “B” and a detailed description thereof is omitted. Further, since the tethers 37B, 105B, and 106B have the same configuration as the tether 37 in the above-described airbag 15 and the tethers 105 and 106 in the above-described airbag 80, “B” is added at the end of the same reference numeral. A detailed description will be omitted.

  The bag body 126 is formed into a bag shape formed from a flexible sheet body. In the case of the embodiment, as shown in FIGS. 35 and 36, the body inflating portion 82B and the body when the inflation is completed A projecting and expanding part 127 disposed so as to protrude rearward from the rear surface side of the expanding part 82B. Since the main body inflating portion 82B has the same configuration as that of the main body inflating portion 82 in the above-described airbag 80, the same members are denoted by the same reference numerals with “B” at the end thereof, and the detailed description thereof will be omitted. Description is omitted.

  The protruding inflatable portion 127 is formed at the upper left portion of the rear side wall portion 91B when the inflation of the airbag 125 is completed, and the head of the occupant MP seated in the passenger seat PS when the inflation of the airbag 125 is completed. It will be arranged at a position that is diagonally forward left of the part MH. As shown in FIG. 36, the projecting and expanding portion 127 does not include a front wall portion, and the upper wall portion 127a, the lower wall portion 127b, the left wall portion 127c, and the right wall portion 127d are directly coupled to the rear side wall portion 91B. The configuration is substantially the same as that of the protruding inflating portion 93 in the above-described airbag 80 except that it is formed into a bag shape.

  The projecting and expanding portion 127 includes an upper wall portion 127a and a lower wall portion 127b that are disposed along substantially the left and right sides on both upper and lower sides, and a left wall portion 127c and a right wall portion 127d that are disposed along substantially the front and rear direction on both left and right sides. And a rear wall 127e disposed substantially along the vertical direction on the rear side. In the rear wall portion 91B, in a region surrounded by the upper wall portion 127a, the lower wall portion 127b, the left wall portion 127c, and the right wall portion 127d, a communication hole portion 94B that communicates the protruding expansion portion 127 with the main body expansion portion 82B. Is formed. The protruding inflatable portion 127 is communicated with the main body inflating portion 82B by a communicating hole portion 94B formed in the rear side wall portion 91B (see FIG. 36), and inflated from the main inflating portion 82B to the inside through the communicating hole portion 94B. In this configuration, the working gas is introduced. Similar to the communication hole portion 94 in the airbag 80 described above, the communication hole portion 94B is configured by arranging four openings 94a that are opened in a substantially rectangular shape in the vertical and horizontal directions. As shown in FIG. 36, the right wall portion 127d is configured to be curved so that the vicinity of the intersection with the rear side wall portion 91B is smoothly connected to the rear side wall portion 91B. In the case of the embodiment, the right wall 127d has a flat cross section 127db that is flat on the rear side of the curved front end side region in a cross section along the front-rear direction when the airbag 125 is completely inflated. The rear side wall portion 91B is disposed so as to intersect with the vicinity portion 91a disposed on the right side of the right wall portion 127d at an obtuse angle. Specifically, in the embodiment, the crossing angle β between the flat portion 127db and the neighboring portion 91a is set to about 110 ° (see FIG. 36).

  Also in the airbag 125, the protruding inflatable portion 127 does not straddle the center line CL3 along the front-rear direction passing through the attachment center C3 in the cross section along the front-rear direction when the airbag 125 is inflated. It is formed in a region on the left side (driver's seat DS side) from the line CL3 (see FIGS. 36 and 44). In the case of the embodiment, the protruding inflatable portion 127 has a width dimension on the left and right side at the time of completion of expansion about half the width dimension on the left and right side at the time of completion of expansion of the main body inflating portion 82B. The width dimension on the vertical direction side is set to about 3/5 of the width dimension on the vertical direction side when the expansion of the portion near the rear side wall portion 91B in the main body expansion portion 82B is completed. Also in the airbag 125, when the airbag 125 is completely inflated, the protruding inflatable portion 127 is disposed so as to protrude rearward from the steering wheel airbag 74 that has been inflated. Further, since the airbag 125 is inflated so as to curve the rear side wall 91B, the protruding inflatable part 127 attached to the rear side wall 91B is directed so that the right side is directed rearward when the inflation of the airbag 125 is completed. Inclined with respect to the left-right direction, they are arranged (see FIG. 44). Further, the flat surface portion 127db of the right wall portion 127d of the projecting inflatable portion 127 is also inclined with respect to the front-rear direction so that the rear end side is directed to the left and right inner sides (left side) when the inflation of the airbag 125 is completed. Will be.

  Also in the airbag 125 of this embodiment, the protruding inflatable portion 127 and the rear side wall portion 91B in the main body inflatable portion 82B constitute an occupant protection portion 129 that can protect the occupant MP when the inflation of the airbag 125 is completed. Yes. The occupant protection unit 129 moves forward obliquely when the vehicle V obliquely collides with the front collision restraint surface 130 capable of protecting the head MH of the occupant MP that moves forward when the vehicle V collides. A slanting constraining surface 131 capable of protecting the head MH of the occupant MP, and an occupant receiving surface 132 disposed at the intersection of the front constraining constraining surface 130 and the slanting constraining surface 131 are provided. .

  The front-projection restraint surface 130 is a region on the upper side of the rear side wall portion 91B, and is configured from a region disposed on the right side of the projecting and expanding portion 127 when expansion is completed. That is, the front collision restraint surface 130 includes a region extending to the left side (driver's seat DS side) beyond the center line CL3 along the front-rear direction passing through the attachment center C3 in the rear side wall portion 91B, and moves forward during a front collision. The head MH of the occupant MP to be protected can be protected without hindrance. In the case of the embodiment, the front collision restraint surface 130 is configured to be curved so that the portion near the center line CL3 is positioned most rearward and the right end side is directed to the front side (see FIG. 44). .

  The oblique projection restraint surface 131 is configured by a right wall portion 127 d of the projecting and expanding portion 127. Specifically, the oblique protrusion restraining surface 131 is composed of a flat surface portion 127db of the right wall portion 127d. That is, also in the airbag 125 of the embodiment, the oblique collision restraint surface 131 is disposed only on the left side of the front collision restraint surface 130 on the driver seat DS side. Further, since the projecting and expanding portion 127 is disposed to be inclined, the oblique protrusion restraining surface 131 is disposed to be inclined so that the rear side is directed leftward with respect to the front-rear direction. The occupant receiving surface 132 disposed at the intersection of the front-projection restraint surface 130 and the oblique-projection restraint surface 131 has a right wall portion 127d and a rear wall portion 91B at the front end side of the right wall portion 127d. It is composed of a curved portion 127da that is formed so as to be smoothly connected. In the embodiment, in the rear side wall portion 91B, the region that is in the vicinity of the right wall portion 127d of the projecting and expanding portion 127 is stitched substantially along the vertical direction so as to pass over the center line CL3 in the rear side wall portion 91B. Part 102B is formed. And since this stitching part 102B and the stitching part 134 for sewing the front end side of the right wall part 127d itself to the rear side wall part 91B are arranged close to each other in the left-right direction, The vicinity portion 91a arranged on the right side of the right wall portion 127d is regulated by these stitching portions 102B and 134, and is arranged substantially linearly in a cross section along the front-rear direction when the airbag 125 is inflated. (See FIG. 36). In the case of the embodiment, in the cross section along the front-rear direction when the airbag 125 is completely inflated, the vicinity portion 91a that constitutes the front impact restraint surface 130 and the right wall portion that constitutes the oblique impact restraint surface 131 The flat portion 127db of 127d is arranged so as to intersect at an obtuse angle. In addition, the occupant receiving surface 132 formed by the intersection portion (curved portion 127da) of the front collision restraint surface 130 and the oblique projection restraint surface 131 has the front collision restraint surface 130 and the oblique projection restraint in the vicinity of the intersection portion. At the position shifted to the right rear side on the occupant MP side with respect to the intersection P3 between the virtual extension lines L5 and L6 extending from the surface 131, the slant collision restraint surface 131 and the front collision restraint surface 130 are gently moved. (See FIGS. 36 and 44). That is, the occupant receiving surface 132 is formed to be curved so that the head MH of the occupant MP can be received smoothly.

  The bag body 126 is configured in a bag shape by joining (sewing) the peripheral edges of a predetermined-shaped base fabric. In the case of the embodiment, as shown in FIGS. 37 and 38, the peripheral wall of the main body inflating portion 82B. The peripheral wall panel 108B constituting the part 83B, the rear left panel 112B constituting the rear side wall part 91B part in the main body inflating part 82B, the rear right panel 113B, and the upper part for the projecting part constituting the upper part of the projecting inflating part 127 Six base fabrics including a panel 136U, a lower panel 136D for a projecting portion that constitutes a lower portion of the projecting and expanding portion 127, and a side panel 137 for a projecting portion that constitutes a site on the side of the projecting and expanding portion 127 A reinforcing cloth 119B that reinforces the region on the front end side when the expansion is completed in the main body inflating portion 82B, a reinforcing cloth 118B that reinforces the periphery of the gas inlet 86B, and a peripheral portion of the gas inlet 86B. A protective fabric 120B be protected from use gas, and a. The members other than the protrusion upper panel 136U, the protrusion lower panel 136D, and the protrusion side panel 137 constituting the protrusion inflating portion 127 are the same as the members forming the airbag 80 described above. Therefore, the same members are denoted by “B” at the end of the same reference numerals, and detailed description thereof is omitted.

  The protruding portion upper panel 136U constitutes a portion of the upper wall portion 127a in the protruding and expanded portion 127 when the expansion is completed, and the protruding portion lower panel 136D is a portion of the lower wall portion 127b in the protruding and expanded portion 127 when the expansion is completed. Is configured. As shown in FIG. 38, the protrusion upper panel 136U and the protrusion lower panel 136D have substantially the same substantially rectangular shape, and the front end faces rightward on the front end side of the right edge 136d. In addition, a curved edge 136e formed by bending is provided. The protrusion side panel 137 is formed as a wide band in the left-right direction, and constitutes the left wall portion 127c, the rear wall portion 127f, and the right wall portion 127d of the protrusion expansion portion 127 when the expansion is completed. . In the case of the embodiment, the protruding portion side panel 137 is formed so that the portions on both ends in the longitudinal direction (left-right direction) constituting the portions on the front end side of the left wall portion 127c and the right wall portion 127d are wide. It is configured. In the airbag 125 of the embodiment, the curved shape (curved edge portion 136e) of the right edge 136d of each of the protruding portion upper panel 136U and the protruding portion lower panel 136D is the right wall of the protruding inflatable portion 127 when the inflation is completed. The curved shape of the curved portion 127da of the portion 127d (the curved shape of the occupant receiving surface 132) is shaped. Further, in the airbag 125 of the embodiment, the front of the straight portion 136f that is a straight region (region on the rear edge side of the curved edge 136e) of the right edge 136d of the upper panel 136U for the protrusion and the lower panel 136D for the protrusion. The inclination angle with respect to the edge 136a is an inclination angle with respect to the rear side wall portion 91B of the right wall portion 127d (planar portion 127db) in the projecting and expanding portion 127 when the expansion is completed (an inclination angle of the oblique collision restraining surface 131 with respect to the front collision restraining surface 130). In the case of the embodiment, the straight portion 136f of the right edge 136d intersects the front edge 136a at an intersection angle of about 100 °.

  Also in the airbag 125 of the embodiment, the peripheral wall panel 108B, the rear left panel 112B, the rear right panel 113B, the projecting portion upper panel 136U, the projecting portion lower panel 136D, and the projecting portion side panel 137 constituting the bag body 126. , Reinforcing fabrics 118B and 119B, protective fabric 120B, front side material 63B constituting front and rear tether 37B, tether base fabrics 105a and 105b constituting upper and lower tethers 105B, and tether base fabrics 106a and 106b constituting regulating tethers 106B. And the vertical piece part 46B and the horizontal piece part 47B which comprise the connection member 45B are each formed from the flexible woven fabric which consists of a polyester thread | yarn, a polyamide thread | yarn, etc., respectively.

  Next, manufacture of the airbag 125 of embodiment is demonstrated. It should be noted that one end side of the tether base fabrics 105a and 105b is previously sewn to the protruding portion upper panel 136U and the protruding portion lower panel 136D using a suture. In addition, one end side of the tether base fabrics 106a and 106b is also sewn to the rear left panel 112B and the protruding side panel 136 in advance.

  First, as shown to A of FIG. 39, the reinforcement cloth 119B is piled up on the inner peripheral surface side of the peripheral wall panel 108B of the state unfolded flatly, and is sewn on the peripheral wall panel 108B. Next, as shown in FIG. 39B and FIG. 40A, the front portion material 63B, the reinforcing cloth 118B, and the protective cloth 120B are overlaid on the reinforcing cloth 119B, and the periphery of the gas inlet 86B. Sewing at the position. Thereafter, the gas inlet 86B and the mounting hole 87B are formed by drilling. Next, as shown in FIG. 40B, the reinforcing cloth 119B is positioned on the outer peripheral side, the peripheral wall panel 108B is folded back, and the vertical piece portion 46B of the connecting member 45B is sandwiched between the front edge side portions, The front edge 109c, 110c, the left edge 109a, 110a, and the right edge 109b, 110b of the upper part 109B and the lower part 110B are sewn together using a suture thread, and the vertical piece 46B is shared. Sewing.

  On the outer surface side of the rear left panel 112B, the front edge 136a of the upper panel 136U for the projecting portion and the lower portion for the projecting portion are located at the position that becomes the peripheral portion 95B of the communication hole portion 94B, as shown in FIGS. The front edge 136a of the panel 136D and the left edge 137c of the projection side panel 137 are sewn together. After that, the upper panel 136U and the side panel 137 for the projecting part are both brought down to the inner surface side of the rear left panel 112B, and the left edge 136c, the rear edge 136b, and the right edge of the upper panel 136U for the projecting part. 136d (including the curved edge portion 136e and the straight portion 136f) is sewn to the upper edge 137a of the projection side panel 137. Similarly, the left edge 136c, the rear edge 136b, and the right edge 136d of the lower panel 136D for the protruding portion in a state of being tilted to the inner surface side of the rear left panel 112B are sewn to the lower edge 137b of the side panel 137 for the protruding portion. Put on. Next, the upper and lower tethers 105B are formed by sewing the other ends of the tether base fabrics 105a and 105b together. Thereafter, the protrusion upper panel 136U, the protrusion lower panel 136D, and the protrusion side panel 137 are separated from the unstitched protrusion side panel 137 on the right edge 136d side so that the seam allowance is not exposed. To reverse the rear left panel 112B. Then, using the gap on the right edge 136d side of the unstitched side panel 137 for the projecting portion, the other ends of the tether base fabrics 106a and 106b are joined together to form the regulation tether 106B. When the right edge 137d of the side panel 137 for the part is sewn to the rear left panel 112B so as to form the stitched portion 134, the projecting and expanding part 127 is formed as shown in FIG. Can do. Next, as shown in FIGS. 42A and 42B, if the inner peripheral edges 112c and 113c of the rear left panel 112B and the rear right panel 113B are sewn together using a suture thread to form a suture site 102B, The rear side wall portion 91 </ b> B with the protruding expansion portion 127 attached can be formed.

  Thereafter, as shown in FIGS. 43A and 43B, the rear left panel 112B and the rear right panel are arranged so that the protruding inflated portion 127 faces inward on the peripheral wall panel 108B opened so as to separate the rear edges 109d and 110d from each other. 113B is overlapped, and the rear edge 109d of the upper portion 109B and the upper edges 112a and 113a of the rear left panel 112B and the rear right panel 113B are sewn. Similarly, the rear edge 110d of the lower part 110B and the lower edges 112b and 113b of the rear left panel 112B and the rear right panel 113B are sewn. Next, the bag main body 126 can be formed by using one of the gas inlets 86B and inverting so that the seam allowance is not exposed to the outside. Thereafter, using one gas inflow port 86B, the rear end 38c of the front part 38B and the front end 39a of the rear part 39B are sewn together to form the front and rear tether 37B, and then the horizontal piece 46B If the connecting member 45B is formed by sewing the portion 47B, the airbag 125 can be manufactured as shown in FIG. 43C.

  The airbag 125 manufactured as described above can be mounted on the vehicle V in the same manner as the airbag 15 described above.

  In the passenger seat airbag device M3 using the airbag 125, the occupant protection portion 129 disposed on the occupant MP side when the airbag 125 is completely inflated includes the front collision restraint surface 130 and the front collision And a constraining surface 131 for oblique projection formed so as to protrude rearward from the constraining surface 130. Also in the passenger seat airbag device M3 of the third embodiment, as shown in FIG. 44, the intersection portion of the front impact restraint surface 130 and the oblique impact restraint surface 131 is the airbag when the inflation is completed. In the cross section of 125, the occupant MP is more than the intersection P3 between the virtual extension lines L5 and L6 extending the restraint surface for front collision 130 (the vicinity portion 91a of the rear side wall portion 91B) near the intersection and the oblique restraint surface 131. It is configured so as to be shifted to intersect with the side position. And this intersection site | part comprises the passenger | crew receiving surface 132 which can receive the head MH of passenger | crew MP. In the passenger seat airbag apparatus M3 of the third embodiment, the front collision restraint surface 130 and the oblique collision restraint surface 131 intersect each other at an obtuse angle, and the front collision restraint surface 130 and the oblique collision restraint surface 131. The occupant-receiving surface 132 formed by the intersection with the slanting portion is arranged so that the slanting constraining surface 131 and the front constraining restraining surface 130 are smoothly connected. Therefore, also in the passenger seat airbag device M3 of the third embodiment, the head MH of the occupant MP that moves obliquely forward at the time of the diagonal collision of the vehicle V or the offset collision, the restraint surface 130 for the front collision. The vehicle can be restrained by an occupant receiving surface 132 formed at an intersection with the oblique collision restraining surface 131. At this time, the front collision restraining surface 130 and the oblique collision restraining surface 131 cause the occupant MP. The two sides of the front side of the head MH and the left and right sides (left side in the case of the embodiment) can be restrained substantially simultaneously, and the head MH of the occupant MP can be restrained in a wide range. it can. Therefore, also in the passenger seat airbag device M3 of the third embodiment, the head MH of the occupant MP moving obliquely forward is restrained by the front impact restraint surface 130, the oblique impact restraint surface 131, and the occupant reception. The surface 132 can be received smoothly.

  Further, in the passenger seat airbag device M3 of the third embodiment, the oblique collision restraint surface 131 is disposed on the driver seat DS side of the front collision restraint surface 130. Alternatively, when the occupant MP seated on the passenger seat PS moves toward an oblique front side that is the front side and the front side in the case of an offset collision, the head MH of the occupant MP can be protected accurately. it can.

  Also in the airbag 125 of the third embodiment, an occupant receiving surface 132 that smoothly connects the two is formed between the oblique collision restraining surface 131 and the front collision restraining surface 130. The head MH of the occupant MP can be received in a wide area from the constraining surface 131 for the slanting projection to the constraining surface 130 for the front collision through the occupant receiving surface 132, and the head when the head MH is received The behavior of turning in the clockwise direction when viewed from above the MH can be accurately suppressed.

  Further, also in the passenger seat airbag device M3 of the third embodiment, the airbag 125 covers the steering wheel 70 in front of the driver seat DS in a region in front of the slanting constraining surface 131 when the inflation is completed. Since the contact surface 89B (see FIG. 44) that contacts the airbag 74 for the steering wheel that is inflated in this manner is formed, the head MH of the occupant MP that moves obliquely forward moves the restraint surface 131 for oblique projection. When the air bag 15 is received by the occupant receiving surface 132, the air bag 15 can be supported by the steering wheel air bag 74, and the occupant MP can be protected more accurately. Also, in the airbag 125 of the third embodiment, the main body inflating portion 82B is arranged so as to largely protrude toward the driver's seat DS when the inflating is completed, and when the occupant MP is received, Since the left wall 83c is in contact with the steering wheel airbag 74 when the inflation is completed, the occupant MP moving obliquely forward is received by the main body inflating part 82B that is inflated thickly. And the occupant MP can be received smoothly.

  In the passenger seat airbag devices M1, M2, and M3 of the first to third embodiments, the inclination of the restraint surfaces 34, 99, and 131 for the oblique projection in the airbags 15, 80, and 125 when the inflation is completed with respect to the front-rear direction. The angle is caused by the inclination angle of the right wall portions 29d, 93d, and 127d in the projecting and expanding portions 29, 93, and 127. In the embodiment, the upper panel for the projecting portion that configures the projecting and expanding portions 29, 93, and 127. The airbags 15 and 80 at the completion of the inflation are changed by changing the intersection angles of the right edges 59d, 115d and 15d of the lower panels 59D, 115D and 136D with respect to the front edges 59a, 115a and 136a. 125, the inclination angles of the constraining surfaces 34, 99, 131 for oblique projection with respect to the front-rear direction are changed.

  In the passenger seat airbag devices M1, M2, and M3 of the embodiment, the occupant receiving surfaces 35, 100, and 132 in the occupant protection portions 32, 97, and 129 of the airbags 15, 80, and 125 are the airbag 15, The right and left wall portions 29d, 93d, and 127d of the projecting and inflating portions 29, 93, and 127, which are the outer peripheral walls of the inflated portions 80 and 125, are configured, but the configuration of the airbag is not limited to this. As the bag 140, the bag 140 shown in FIGS. 45 and 46 may be used. The airbag 140 shown in FIGS. 45 and 46 has a bag-like bag body 141 that can be inflated by allowing inflation gas to flow therein, and a bag body 141 that is separate from the bag body 141 and is located on the rear side wall 143 side. It is set as the structure provided with the cover cloth 146 arrange | positioned.

  The bag body 141 is a bag formed from a flexible sheet body. In the case of the embodiment, as shown in FIGS. 45 and 46, the body inflating part 142 and the body when the inflation is completed And a projecting and expanding part 144 disposed so as to project rearward from the rear surface side of the expanding part 142. The protruding inflatable portion 144 is formed so as to protrude rearward from the rear side wall portion 143 disposed on the rear surface side in the bag main body 141 when the inflation is completed. Specifically, in the rear side wall portion 143, when the inflation is completed. It is arrange | positioned in the site | part of the left upper side. The protruding inflatable portion 144 is disposed at a position that is diagonally forward left of the head of the passenger seated in the passenger seat when the inflation of the airbag 140 is completed.

  The cover cloth 146 is formed of a flexible cloth material. The cover cloth 146 is a rear wall portion 143 that is an outer peripheral wall of an inflated portion (bag body 141) of the airbag 140 and a right wall portion 144a of the projecting inflatable portion 144. When the airbag 140 (bag body 141) is completely inflated, the rear wall 143 and the right wall 144a of the projecting inflatable portion 144 are connected to each other so as to be inclined with respect to the front-rear direction. Has been placed. This cover cloth 146 is near the boundary portion between the main body inflating portion 142 and the projecting inflating portion 144 projecting from the main body inflating portion 142 (rear side wall portion 143) (near the intersection P4 between the rear side wall portion 143 and the right wall portion 144a). The concavity 145 is closed, disposed at a position closer to the occupant side than the intersection P4, and connected to the rear side wall 143 and the right wall 144a of the projecting inflating part 144 (FIGS. 46 and 47). reference). Specifically, as shown in FIG. 46, the cover cloth 146 has one end side on the left side of the intersection with the center line CL4 along the front-rear direction passing through the attachment center C4 of the airbag 140 in the rear side wall portion 143. The other end side is connected to a position near the center before and after the right wall portion 144a.

  In the airbag 140 of this embodiment, the protruding inflatable portion 144, the rear side wall portion 143 of the main body inflatable portion 142, and the cover cloth 146 can protect the occupant MP when the airbag 140 is completely inflated. Is configured. The occupant protection unit 148 moves forward obliquely when the vehicle V obliquely collides with the front collision restraint surface 149 capable of protecting the head MH of the occupant MP that moves forward when the vehicle V collides. The slanting constraining surface 150 capable of protecting the head MH of the occupant MP, and the occupant receiving surface 151 disposed at the intersection of the front constraining restraining surface 149 and the slanting constraining surface 150 are provided. .

  In the case of the embodiment, the front collision restraint surface 149 is configured from a region on the upper side of the rear side wall portion 143 and disposed on the right side of the protruding expansion portion 144 when expansion is completed. The oblique projection restraining surface 150 is configured by a right wall portion 144 a of the projecting and expanding portion 144. The occupant receiving surface 151 disposed at the intersection of the front-projection restraint surface 149 and the oblique-projection restraint surface 150 is a cover cloth disposed to connect the rear wall portion 143 and the right wall portion 144a. 146. In the embodiment, the front collision restraint surface 149 (rear wall portion 143) and the oblique collision restraint surface 150 (right wall portion 144a) are substantially orthogonal to each other in a cross section along the front-rear direction when the airbag 140 is completely inflated. The occupant receiving surface 151 configured by the cover cloth 146 is located on the rear right side that is closer to the occupant MP than the actual intersection P4 between the front collision restraint surface 149 and the slant projection restraint surface 150. In the position shifted to the position, the constraining surface for oblique projection 150 and the constraining surface for front impact 149 are closed while closing the concave portion 145 formed near the boundary portion between the constraining surface for front impact 149 and the constraining surface for oblique projection 150. Are arranged so that they are connected to each other. And this passenger | crew receiving surface 151 is comprised so that the head MH of passenger | crew MP can be received smoothly.

  Even when the airbag 140 having such a configuration is used, the occupant protection portion 148 disposed on the occupant side when the airbag 140 is completely inflated is located behind the front collision restraint surface 149 and the front collision restraint surface 149. And a constraining surface for oblique projection 150 formed so as to project toward the surface. In the airbag 140, the cover cloth 146 that constitutes the intersection of the front-projection restraint surface 149 and the oblique-projection restraint surface 150 has a cross section along the front-rear direction of the airbag 140 when the inflation is completed. The front collision restraining surface 149 and the oblique collision restraining surface 150 are configured to be shifted and intersected with a position closer to the occupant side than the actual intersection P4. And this cover cloth 146 comprises the passenger | crew receiving surface 151 which can receive a passenger | crew's head. Therefore, even when the airbag 140 having such a configuration is used, the head of an occupant who moves obliquely forward at the time of an oblique collision or an offset collision of the vehicle is used for the oblique collision and the restraining surface 149 for front collision. The vehicle can be restrained by an occupant receiving surface 151 formed at an intersection with the restraint surface 150. At this time, the front impact restraint surface 149 and the oblique impact restraint surface 150 allow the passenger's head to be restrained. The front side and the left and right sides can be restrained substantially simultaneously, and the occupant's head can be restrained in a wide range. Therefore, the occupant's head that moves obliquely forward can be smoothly received by the front collision restraint surface 149, the oblique projection restraint surface 150, and the occupant receiving surface 151.

  In the airbag 140, the occupant receiving surface 151 (rear side wall portion 143) and the oblique projection restraining surface 150 (right wall portion 144a) intersect so as to be substantially orthogonal when the inflation is completed. As shown by a two-dot chain line 46, the constraining surface for oblique projection may intersect the occupant receiving surface at an acute angle, and the cover cloth may be connected to form the occupant receiving surface by the cover cloth. . Also, as the airbag, a plurality of internal tethers are arranged in the vicinity of the occupant protection portion, and the curved shape of the outer peripheral wall of the airbag is regulated by these internal tethers, so that the front collision restraint surface and the oblique collision The airbag may be configured to form a restraining surface and an occupant receiving surface.

  DESCRIPTION OF SYMBOLS 1 ... Instrument panel (instrument panel), 4 ... Wind shield, 6 ... Air bag cover, 8 ... Inflator, 12 ... Case (storage part), 15 ... Air bag, 17 ... Main body expansion part, 27 ... Rear side wall part, 29 ... Projection inflating portion, 29d... Right wall portion, 29da .curvature portion, 32 .. occupant protection portion, 33 .. front impact restraint surface, 34 .. oblique impact restraint surface, 35. 73 ... Steering wheel airbag device, 74 ... Steering wheel airbag, 80, 125 ... Air bag, 82, 82B ... Main body inflating part, 91, 91B ... Rear side wall part, 93, 127 ... Protruding inflating part, 93d, 127d: right wall portion, 93da, 127da ... curved portion, 97, 129 ... occupant protection portion, 98, 130 ... front impact restraint surface, 99, 131 ... oblique impact restraint surface, 10 , 132 ... occupant receiving surface, 140 ... airbag, 142 ... main body inflating part, 143 ... rear side wall part, 144 ... projecting inflating part, 144a ... right wall part, 145 ... concave part, 146 ... cover cloth, 148 ... occupant protection 149 ... restraint surface for front collision, 150 ... restraint surface for oblique projection, 151 ... occupant receiving surface, MP ... occupant, MH ... head, PS ... passenger seat, DS ... driver seat, V ... vehicle, M1, M2, M3 ... Airbag devices for passenger seats.

Claims (5)

Folded and stored in a storage part provided in an instrument panel disposed in front of the passenger seated in the passenger seat, inflated so as to flow into the interior and protrude toward the rear of the vehicle, An airbag device for a passenger seat provided with an airbag configured to protect an occupant,
The airbag is configured as an occupant protection part capable of protecting the occupant on the rear side when the inflation is completed,
The occupant protection unit is capable of protecting the occupant's head that moves forward during a vehicle frontal collision, and a frontal restraint restraint surface, and the occupant moving toward the diagonally forward during an oblique or offset collision of the vehicle. A slanted constraining surface capable of protecting the head,
The oblique projection restraining surface is formed so as to protrude rearward from the front projection restraining surface on at least one of the left and right sides of the front projection restraining surface,
In the cross section of the airbag when the inflation is completed, the intersection of the front collision restraint surface and the oblique projection restraint surface is the front collision restraint surface and the oblique projection restraint surface in the vicinity of the intersection portion. And an occupant receiving surface that is capable of receiving the head of the occupant and is configured to be shifted and intersected with a position that is closer to the occupant side than the intersection of the virtual extension lines extending from each other. Airbag device for passenger seats.   The passenger seat airbag apparatus according to claim 1, wherein the occupant receiving surface is constituted by an outer peripheral wall itself of an inflated portion of the airbag.   The occupant-receiving surface is separated from the outer peripheral wall of the inflated portion of the airbag and is arranged so as to be continuous with the front-projection restraint surface, and the front-projection restraint surface and the oblique-projection restraint. Constructed from a flexible cloth material arranged to be connected to the front-projection constraining surface and the oblique-projection constraining surface so as to bridge over a recess formed in a region near the intersection with the surface. The airbag device for a passenger seat according to claim 1, wherein the airbag device is a passenger seat.   4. The passenger seat airbag device according to claim 2, wherein the oblique collision restraining surface is disposed on a driver seat side of the front collision restraining surface. 5.   When the airbag is inflated, the airbag comes into contact with a steering wheel airbag that expands in front of the driver seat so as to cover the steering wheel in a region in front of the slanting constraining surface. The airbag device for a passenger seat according to claim 4, further comprising a surface.

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