WO2007145028A1

WO2007145028A1 - Air bag and air bag device

Info

Publication number: WO2007145028A1
Application number: PCT/JP2007/058820
Authority: WO
Inventors: Kazuhiro Abe
Original assignee: Takata Corporation
Priority date: 2006-06-16
Filing date: 2007-04-24
Publication date: 2007-12-21
Also published as: JP2007331658A

Abstract

Disclosed are an air bag quickly inflating in the vertical direction and sufficiently inflating in the lateral direction, and an air bag device having the air bag. An inner bag (22) is provided in the air bag (10). The left and right ends of the air bag (10) are connected to the inner bag (22) by tear seams (60). When the air bag (10) is inflated, the lateral inflation of both left and right ends of the air bag (10) to the outer sides is restrained until the internal pressure in the air bag (10) reaches a predetermined value. When the internal pressure in the air bag (10) exceeds the predetermined value, the tear seams (60) are broken, the connection of the left and right ends of the air bag (10) to the inner bag (22) is released, and thereby, both left and right ends of the air bag (10) can be laterally inflated to the outer sides.

Description

Specification

Air bag and air bag device

Field of Invention

The present invention relates to an airbag that is provided on a high-speed moving body such as a vehicle and that inflates and restrains a human body in an emergency such as a collision.

Background of the Invention

In order to restrain an occupant in an emergency such as a car collision, various airbag devices such as a driver's seat airbag device are used. The airbag device for a driver's seat has an airbag formed by sewing the peripheral portions of the front panel on the passenger side and the rear panel on the opposite side. In the center of the rear panel, an inflator engaging opening for receiving the tip side of the inflator (gas generator) is provided. The periphery of this opening is attached to the retainer with bolts, pins, rivets and the like. The rear panel is provided with a vent hole for releasing the gas in the bag and restraining the occupant to the soft when the occupant at the driving seat rushes into the air nog.

[0003] An airbag device for a driver's seat is installed on a steering wheel. In the event of a vehicle collision, the inflator performs gas ejection operation, and the airbag is inflated by the gas from the inflator, and the inflated airbag is interposed between the steering wheel and the driver's seat occupant to restrain the driver's seat occupant.

[0004] At this time, it is desirable that the airbag rapidly inflate in the vertical direction so that the abdomen and head of the occupant can be restrained early by the airbag.

[0005] In Japanese Patent Laid-Open No. 2003-341455, the left and right end portions of an airbag are connected to the center side of the airbag, whereby the left and right end portions of the airbag are connected to the air bag when the airbag is inflated. The structure provided with the drawing-in piece drawn in to the center side is described. In the airbag of the same publication, when the airbag is inflated, the pull-in piece restricts the outward expansion of the airbag to the left and right ends. As a result, the inflation of the airbag in the vertical direction is promoted, and the airbag is quickly inflated in the vertical direction.

Patent Document 1: Japanese Patent Laid-Open No. 2003-341455 [0006] In the airbag disclosed in the above Japanese Patent Application Laid-Open No. 2003-341455, even when the inflation of the airbag is completed, the left and right ends of the airbag are drawn into the center of the air nog by bow I cut pieces. As left unfolded, the width of the inflated airbag in the left-right direction is relatively small.

Summary of the Invention

[0007] An object of the present invention is to provide an air dog that expands rapidly in the vertical direction and sufficiently expands in the left-right direction, and an air nog device including the airbag.

[0008] An airbag according to an aspect of the present invention is an airbag that is inflated by gas having a gas generator power, and includes a front panel disposed on the occupant side and a rear panel disposed on the opposite side of the occupant. The front panel and the rear panel have their peripheral portions joined together, and an inner bag is provided in the airbag, and the inner bag communicates with the inner bag and the air nog. First, gas is introduced into the inner bag, the inner bag is inflated, and then the inner bag internal force is discharged through the communicating portion into the airbag. In an airbag configured so that the remaining portion of the airbag is inflated, both the left and right end portions of the airbag are connected to each other by a connecting means capable of releasing the connection. In this way, the lateral expansion of the right and left ends of the airbag is restricted, and the coupling means releases the coupling when the internal pressure of the air knob exceeds a predetermined pressure. It is characterized by being composed.

[0009] An airbag according to another aspect of the present invention is an air bag that is inflated by gas from a gas generator, and is a front panel disposed on the occupant side and a rear panel disposed on the opposite side of the occupant. The front panel and the rear panel have their peripheral parts joined together, and an opening for a gas generator is provided at the center of the rear panel, and the gas generator is provided around the opening. In the airbag provided with a gas flow direction regulating panel for regulating the flow direction of the gas ejected into the air nog, the gas flow direction regulating panel is a left half portion disposed on the left side of the opening. And a right half disposed on the right side of the opening, the left half of the airbag is connected to the left half, and the right end of the airbag is connected to the right half, The left half and the right half are decoupled Possible coupling means In the state before the coupling means releases the coupling, the outward expansion of the right and left ends of the airbag is regulated by the gas flow direction regulating panel, and the coupling is performed. The means is configured to release the coupling when the internal pressure of the airbag becomes a predetermined pressure or more.

[0010] The airbag device of the present invention includes the powerful airbag of the present invention and a gas generator for inflating the airbag.

Brief Description of Drawings

FIG. 1 is a cross-sectional view of an airbag and an airbag device according to an embodiment during inflation of the airbag.

2 is a cross-sectional view of the airbag and the airbag apparatus of FIG. 1 when the airbag is completely inflated.

3 is an exploded perspective view of the airbag and the airbag device of FIG. 1.

FIG. 4 is a cross-sectional view of the airbag and airbag device according to the embodiment in the middle of inflation of the airbag.

FIG. 5 is a cross-sectional view of the airbag and the airbag apparatus in FIG. 4 when the airbag has been inflated.

6 is an exploded perspective view of the airbag and the airbag device of FIG.

FIG. 7 is a perspective view of an inner bag of the airbag of FIG.

FIG. 8 is a cross-sectional view of the airbag and the airbag apparatus according to the embodiment in the middle of inflation of the airbag.

9 is a cross-sectional view of the airbag and the airbag apparatus in FIG. 8 when the airbag has been inflated.

10 is an exploded perspective view of the airbag and the airbag device of FIG.

FIG. 11 is a cross-sectional view of the airbag and the airbag apparatus according to the embodiment in the middle of inflation of the airbag.

12 is a cross-sectional view of the airbag and the airbag apparatus in FIG. 11 when the airbag has been inflated.

13 is an exploded perspective view of the airbag and the airbag apparatus of FIG. FIG. 14 is a cross-sectional view of the airbag and airbag device according to the embodiment in the middle of inflation of the airbag.

15 is a cross-sectional view of the airbag and the airbag apparatus in FIG. 14 when the airbag has been inflated.

16 is an exploded perspective view of the airbag and the airbag device of FIG.

Detailed description

[0012] The airbag according to the first aspect is an airbag that is inflated by gas from a gas generator, and includes a front panel disposed on the occupant side and a rear panel disposed on the opposite side of the occupant. The peripheral portions of the panel and rear panel are joined to each other, and an inner bag is provided in the airbag, and the inner bag has a communication portion that communicates the inner bag and the airbag. First, gas is introduced into the inner bag, the inner bag is inflated, and then gas flows out from the inner knock into the airbag via the communicating portion. In the airbag configured so that the remaining portion of the airbag is inflated, the inner bag is coupled by coupling means capable of decoupling the left and right ends of the airbag. As a result, expansion of the right and left ends of the airbag to the outside is restricted, and the coupling means is configured to release the coupling when the internal pressure of the airbag exceeds a predetermined pressure. It is characterized by being.

[0013] In the air bag of the second aspect, in the first aspect, the inner bag is connected to the front panel, so that the separation distance between the front panel and the rear panel when the air bag is inflated is reduced. It is characterized by being regulated.

[0014] In the airbag according to the third aspect, the airbag according to the third aspect is provided with a tether for connecting the front panel and the rear panel in the airbag. The airbag is inflated by the tether. The separation distance of the front panel from the rear panel at the time is regulated.

[0015] The airbag according to the fourth aspect is an airbag that is inflated by gas from a gas generator, and includes a front panel disposed on the occupant side and a rear panel disposed on the opposite side of the occupant. The peripheral edges of the panel and rear panel are connected to each other. An opening for the gas generator is provided at the center of the gas generator panel, and a gas flow direction regulating panel is provided around the opening to regulate the flow direction of the gas generated by the gas generator force and the air bag. In the airbag, the gas flow direction regulating panel has a left half portion disposed on the left side of the opening and a right half portion disposed on the right side of the opening, and the left half portion includes the left half portion. The left end side of the airbag is connected, the right end side of the airbag is connected to the right half part, and the left half part and the right half part are coupled by coupling means capable of decoupling, In a state before the coupling means releases the coupling, the outward expansion of the left and right ends of the airbag is regulated by the gas flow direction regulating panel, and the coupling means Configured to release the coupling when the internal pressure of the airbag exceeds the specified pressure It is characterized in that Ru is.

[0016] In the airbag of the fifth aspect according to the fourth aspect, the left half extends from the left end side of the airbag to the vicinity of the left side of the opening, and the right half is The right side force of the airbag extends to the vicinity of the right side of the opening, and the middle part of the left half part in the extending direction and the middle part of the right half part in the extending direction are coupled by the coupling means. Thus, the outward expansion of the left and right ends of the airbag is restricted.

[0017] In the airbag of the sixth aspect, in the fifth aspect, the left half and the right half are integrally formed! / It is characterized by scolding.

[0018] In the airbag of the seventh aspect, in the fourth aspect, the left half extends from the left end side of the airbag to the center side of the airbag, and the right half is The right end side force of the airbag extends to the center side of the airbag, and the middle portion of the left half extends in the vicinity of the left side of the opening on the inner side surface of the airbag of the rear panel. An insertion portion is provided in the vicinity of the right side of the opening, and a penetration portion through which the middle portion of the right half extends is provided. The left half and the right half When the end portions on the center side of the airbag are coupled to each other by the coupling means, the lateral outward expansion of the left and right end portions of the airbag is restricted.

[0019] The airbag of the eighth aspect is the air bag according to the seventh aspect, wherein a vent hole is provided in a region overlapping the at least one insertion portion of the rear panel, and the bag disposed on the vent hole is provided. An opening that overlaps with the vent hole is provided in the passage portion. When the left half or right half is inserted through the opening, the opening and the vent hole are closed by the left half or right half. The opening and the vent hole are opened when the part or the right half comes out, and the inside and outside of the airbag communicate with each other through the opening and the vent hole.

[0020] An airbag according to a ninth aspect is characterized in that, in any one of the first to eighth aspects, the coupling means is a tear seam.

[0021] The airbag device according to the tenth aspect is the airbag device including the airbag and a gas generator for inflating the airbag, wherein the airbag is described in any one of the first to ninth aspects. It is characterized by being an airbag.

[0022] In the airbag according to the first aspect, when the airbag is inflated, the right and left ends of the airbag are respectively connected to the inner bag by the coupling means until the internal pressure of the airbag reaches a predetermined pressure. In this way, the lateral outward expansion of the airbag is restricted. As a result, expansion of the airbag in the vertical direction is promoted, and the airbag is rapidly expanded in the vertical direction.

[0023] When the internal pressure of the airbag exceeds a predetermined pressure, the coupling means releases the coupling between the left and right ends of the airbag and the inner bag. As a result, the airbag is allowed to expand laterally outward at the left and right ends, and the airbag is sufficiently expanded in the left-right direction.

[0024] As in the second aspect, the inner nog is connected to the front panel of the air nog, or the front panel and the rear panel of the airbag are connected with a tether as in the third aspect, so that the airbag can be Since the separation distance of the front panel from the rear panel is restricted, the airbag is prevented from being inflated so as to protrude toward the passenger. In addition, this facilitates the expansion of the airbag in the vertical direction and the horizontal direction.

[0025] In the airbag according to the fourth aspect, when the airbag is inflated, the left half and the right half of the gas flow direction regulating panel are separated until the internal pressure of the airbag reaches a predetermined pressure. The airbag is coupled by coupling means, and the left end side and the right end side of the airbag are connected via the left half part and the right half part. As a result, the outward expansion of the airbag on the left and right ends is restricted.

[0026] At this time, the left half and the right half of the gas flow direction regulating panel are the gas generator openings. Therefore, the gas flow direction restriction panel restricts the gas from the gas generator flowing into the airbag through the opening to flow upward and downward.

[0027] In this way, the gas flow direction regulating panel regulates the outward expansion of the airbag at the left and right ends, and the flow direction of the gas generated by the gas generator within the airbag is the vertical direction. Therefore, the airbag is promoted to be expanded in the vertical direction, and the airbag is rapidly expanded in the vertical direction.

[0028] When the internal pressure of the airbag exceeds a predetermined pressure, the coupling means releases the coupling between the left half and the right half of the gas flow direction regulating panel. As a result, the connection between the left end side and the right end side of the airbag is also released, and the airbag is allowed to expand outwardly on the left and right ends. As a result, the airbag is sufficiently inflated in the left-right direction.

[0029] In the fifth aspect, in the gas flow direction regulating panel, the left half of the left half of the airnog extends to the vicinity of the left side of the gas generator opening, and the right half of the gas flow direction regulating panel extends from the right end of the airbag to the gas generator. It extends to the vicinity of the right side of the opening.

[0030] The left half and the right half of the airbag are coupled to each other in the extending direction of the left half and the right half by a coupling means, whereby the left end and the right end of the airbag are connected via a gas flow direction regulating panel. The inflation of the right and left ends of the airbag to the outside is restricted.

[0031] Further, at this time, the partial force from the coupling portion by the coupling means to the vicinity of each opening of the left half and the right half to surround the left and right sides and the passenger side of the opening, The right half restricts the gas from the gas generator flowing into the airbag through the opening to flow upward and downward.

[0032] Thus, in the fifth aspect, with a simple configuration, the lateral expansion of the left and right ends of the airbag is restricted and the flow direction of the gas flowing into the airbag is controlled. It can be regulated in the vertical direction.

[0033] In this case, as in the sixth aspect, the gas flow direction regulating panel itself and the mounting to the airbag are provided by integrally providing the left half and the right half of the gas flow direction regulating panel. The structure can also be simplified.

[0034] In the seventh aspect, the left half of the gas flow direction regulating panel has a left end side force of the airbag. It extends to the center side of the airbag, and the right half extends from the right end side of the airbag to the center side of the airbag. The middle portions in the extending direction of the left half portion and the right half portion are respectively inserted into insertion portions provided in the vicinity of the left and right of the gas generator opening.

[0035] By connecting the end portions of the left half portion and the right half portion on the center side of the airbag with a coupling means, the left end side and the right end side of the airbag are coupled via the gas flow direction regulating panel. Thus, the lateral outward expansion of the right and left ends of the airbag is restricted.

[0036] At this time, the left half portion and the right half portion of the left half portion and the right half portion surround the right and left sides of the opening and the occupant side from the connecting portion by the connecting means to the respective insertion portions. And the right half restricts the gas from the gas generator flowing into the airbag through the opening to flow upward and downward.

[0037] Thus, even in the seventh aspect, with a simple configuration, the lateral expansion of the left and right ends of the airbag is restricted and the flow direction of the gas flowing into the airbag is controlled. It can be regulated in the vertical direction.

[0038] In the eighth aspect, a vent hole is provided in a region of the rear panel that overlaps at least one of the insertion portions, and an opening that overlaps the vent hole is formed in the penetration portion disposed on the vent hole. Is provided. When the left half or right half of the gas flow direction regulating panel is passed through this penetration, these openings and vent holes are closed by the left half or right half. . When the left half or right half comes out of the insertion portion, the opening and vent hole are opened, and the inside and outside of the airbag communicate with each other through the opening and vent hole.

[0039] The state in which the left half and the right half of the gas flow direction regulating panel are inserted into each through portion is that the end portions of the left half and the right half on the central side of the airbag are mutually connected. The left half part and the right half part are connected to each other by the connecting means and cannot be pulled out from the insertion part. At this time, the laterally inflating force S of the left and right ends of the airbag S is regulated by a continuous body of these left half and right half, and the opening and the right half are restricted by the left half and right half. The vent hole is closed, and the gas inside the airbag is also restricted from flowing out of the airbag through the opening and the vent hole. As a result, not only the expansion of the airbag in the vertical direction is promoted, but also the increase in the internal pressure of the airbag is promoted. The expansion of is accelerated.

[0040] When the internal pressure of the airbag becomes equal to or greater than a predetermined value and the coupling between the left half and the right half by the coupling means is released, the left and right ends of the airbag are inflated toward the side outward. Become. Along with this, the left half and the right half are respectively pulled sideways and pulled out from each penetration. As a result, the opening and the vent hole are opened, and the inside and outside of the airbag communicate with each other through the opening and the vent hole. Therefore, when an occupant enters the airbag, the opening and the vent hole are communicated with the opening and the vent hole. As a result, gas flows out of the airbag and the passenger force S is softly restrained by the airbag.

[0041] As in the ninth aspect, the coupling means is preferably a tear seam, which is simple and preferable.

[0042] Since the airbag device of the tenth aspect includes the powerful airbag of the present invention, the airbag can be rapidly inflated in the vertical direction and sufficiently expanded in the left-right direction. I'll do it.

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

1 and 2 are cross-sectional views of the airbag and the airbag apparatus according to the embodiment. FIG. 3 is an exploded perspective view of the airbag and the airbag apparatus. Fig. 1 shows the air bag in the middle of inflation. Fig. 2 shows the completion of airbag inflation

[0045] In the following description, the front end side of the airbag refers to the occupant side, and the rear end side refers to the side opposite to the occupant. Further, the vertical and horizontal directions coincide with the vertical and horizontal directions for the occupant.

[0046] The airbag 10 of this embodiment is an airbag for a driver's seat of an automobile.

[0047] This airbag 10 is formed by stitching together a front panel 12, a rear panel 14, a first inner panel 22A, and a second inner panel 22B made of a circular woven fabric. The front panel 12 and the rear panel 14 are of the same diameter, and their outer peripheral edges are stitched together by a seam 15 made of yarn or the like to form a bag. The stitched portion has an annular shape that circulates along the outer peripheries of the front panel 12 and the rear panel 14.

[0048] The rear panel 14 has an inflator (gas generator) opening 16 and a vent hole 18. It has been. The inflator opening 16 is disposed at the center of the rear panel 14. A bolt insertion hole 20 is provided around the opening 16 for the inflator.

[0049] Inside the airbag 10, an inner bag 22 including the first inner panel 22A and the second inner panel 22B is provided. The first and second inner panels 22A and 22B are arranged substantially concentrically with the front panel 12 and the rear panel 14, and their outer peripheral edges are stitched together by a seam 23B made of a thread or the like.

[0050] In this embodiment, the central portion of the first inner panel 22A on the front panel 12 side is stitched to the central portion of the front panel 12 by a seam 23A made of a thread or the like. The central force of the first inner panel 22A is the tip side when the inner nog 22 is inflated.

[0051] An inflator opening 24 disposed substantially concentrically with the inflator opening 16 of the rear panel 14 is provided at the center of the second inner panel 22B on the rear panel 14 side. These openings 16, 24 have approximately the same diameter. Further, around the opening 24 of the inner panel 22B, a bolt through hole 26 that overlaps with the bolt through hole 20 of the rear panel 14 is provided. The central force of the second inner panel 22B is the rear end side when the inner bag 22 is inflated.

[0052] The peripheral portion of the inflator opening 24 of the second inner panel 22B is overlapped with the peripheral portion of the inflator opening 16 of the rear panel 14, and is overlapped with the peripheral portion of the inflator mounting port 32 of the retainer 30. The Then, the peripheral portions of the inflation openings 24, 16 are fixed to the retainer 30 by a presser ring 42 described later. Thereby, the rear end side of the inner bag 22 is connected to the rear panel 14, and the front panel 12 is connected to the rear panel 14 via the inner bag 22.

[0053] In this embodiment, the second inner panel 22B has a plurality (four in this embodiment) of communication ports 27 as communication portions that communicate the inside of the inner bag 22 and the inside of the air bag 10. Is provided. In this embodiment, each communication port 27 is disposed on an extension line in the gas ejection direction of an inflator 36 described later disposed in the inner bag 22 through the inflator openings 16, 24. That is, each communication port 47 is formed at a position facing the gas ejection port 36 a of the inflator 36. However, the number and arrangement of communication ports 27 It is not limited. For example, the first inner panel 22A has a communication port.

It should be noted that a reinforcing patch or the like may be attached to the peripheral portions of the openings 16, 24, the communication port 27, and the vent hole 18, respectively.

[0055] In this embodiment, a pair of ear-shaped projecting pieces 12a are also provided in the left-right direction for the peripheral edge force of the front panel 12, and these projecting pieces 12a are respectively coupling means capable of releasing the coupling. All tear seams 60 are connected to the inner bag 22. The projecting pieces 12a may project from both the front panel 12 and the rear panel 14 which may project from the rear panel 14, and may be sewn to the inner bag 22 in a two-layered manner.

[0056] In this embodiment, as shown in Fig. 1, the left peripheral edges and the right peripheral edges of the first inner panel 22A and the second inner panel 22B are the outermost circumferences (seams), respectively. 23B) is overlapped over a predetermined width from the center side, and the projecting piece 12a is further overlapped with the overlap portion, and these are integrally stitched by the tear seam 60.

[0057] The tear seam 60 is configured to be broken when the internal pressure of the airbag 10 exceeds a predetermined value to release the connection between the projecting piece 12a and the first inner panel 22A and the second inner panel 22B. ing.

[0058] The retainer 30 for attaching the airbag 10 is provided with an inflator attachment port 32 at the center and a bolt through hole 34 around it.

[0059] The inflator 36 has a substantially cylindrical shape, and a gas outlet 36a is provided on the side peripheral surface on the distal end side in the cylinder axis direction. In this embodiment, four gas outlets 36 a are provided at equal intervals in the circumferential direction of the inflator 36. The inflator 36 is configured to eject gas in a radial direction from these gas ejection ports 36a. A flange 38 for fixing an inflator projects from a side circumferential surface of the inflator 36 in the cylinder axis direction, and on the side peripheral surface on the rear end side of the gas jet port 36a. The flange 38 is provided with a bolt hole 40. The inflator 36 is fitted at the tip side of the inflator attachment port 32 of the retainer 30.

When the airbag 10 is attached to the retainer 30, the peripheral portions of the inflation openings 16, 24 of the rear panel 14 and the second inner panel 22 B are attached to the retainer 30 by the retaining ring 42. Press against the peripheral part of the inflation mounting hole 32 of the N 30. The tip end side of the inflator 36 fitted in the inflator attachment port 32 is inserted into the first chamber 1 through the inflator openings 16, 24. The gas outlets 36a provided on the front end side of the inflator 36 face the communication ports 27 of the second inner panel 22B, respectively.

[0061] At this time, the stud bolt 44 of the presser ring 42 is passed through the bolt hole 26, 20, 34, 40, and the nut 46 is tightened at the tip thereof, whereby the second inner panel 22B, the airbag 10 and And fix the inflator 36 to the retainer 30. Then, the airbag 10 is folded, and the module cover 48 is attached to the retainer 30 so as to cover the folded body of the airbag 10, whereby the airbag device is configured. This airbag device is installed in a steering wheel 50 of an automobile.

[0062] The operation of the airbag apparatus configured as described above is as follows.

[0063] In the event of a vehicle collision or the like, the inflator 36 operates and gas is ejected into the inner bag 22. By this gas, the inner bag 22 is first inflated, and then the gas flows into the airbag 10 through the communication port 27, whereby the remaining portion of the airbag 10 is inflated. The airbag 10 pushes the module cover 48 open and deploys in the vehicle compartment to restrain the driver's seat occupant.

In this embodiment, the communication port 27 is disposed on an extension line in the gas ejection direction of the inflator 36 disposed in the inner bag 22. That is, the communication port 47 is disposed so as to face the gas outlet 36 a of the inflator 36. Therefore, when the inflator 36 is activated, gas is ejected from the gas ejection port 36a toward the communication port 27. For this reason, the gas from the inflator 36 is also directly supplied into the air knob 10 through the communication port 27. As a result, the entire airbag 10 is inflated early.

[0065] In this airbag 10, until the inner pressure of the airbag 10 reaches a predetermined pressure, the left and right ends of the airbag 10 are coupled to the inner bag 22 by tear seams 60, respectively. Expansion of the airbag 10 to the outside on the left and right ends is restricted. As a result, expansion of the airbag 10 in the vertical direction is promoted, and the airbag 10 is rapidly expanded in the vertical direction. [0066] When the internal pressure of the airbag 10 exceeds a predetermined pressure, the tear seam 60 breaks and the connection between the left and right ends of the airbag 10 and the inner bag 22 is released. As a result, the left and right ends of the airbag 10 are allowed to inflate laterally outward, and the airbag 10 is sufficiently inflated in the left-right direction.

In this embodiment, since the inner bag 22 is connected to the front panel 12, the inner bag 22 regulates the separation distance between the front panel 12 and the rear panel 14 when the airbag is inflated. The bag 10 is prevented from inflating so as to protrude toward the passenger. This also promotes inflation of the airbag 10 in the vertical direction and the horizontal direction.

4 and 5 are cross-sectional views of an airbag and an airbag apparatus according to another embodiment. FIG. 6 is an exploded perspective view of the airbag and the airbag apparatus. FIG. 7 is a perspective view of the inner bag of this airbag. Fig. 4 shows the air bag in the middle of inflation. Fig. 5 shows the completion of airbag inflation.

[0069] The airbag 10A of this embodiment also has an inner bag 70 provided therein, and the left and right ends of the airbag 10A are coupled to the inner bag 70 by tear seams 60, respectively. However, in this embodiment, the inner bag 70 is not connected to the front panel 12. Instead, the front panel 12 and the rear panel 14 are connected by a tether 80.

[0070] Also in this embodiment, the inner bag 70 is formed by stitching the peripheral portions of the first inner panel 71A and the second inner panel 71B each made of a circular woven fabric with the seam 72. An inflator opening 73 disposed substantially concentrically with the inflator opening 16 of the rear panel 14 is provided at the center of the second inner panel 71B on the rear panel 14 side. A bolt through hole 74 is provided around the opening 73 so as to overlap the bolt through hole 20 of the rear panel 14.

[0071] In this embodiment, the inner panel 71A or 71B is not provided with a communication port for communicating the inside of the inner bag 70 and the inside of the airbag 10A. In this embodiment, when the peripheral portions of the inner panels 71A and 71B are stitched together with the seam 72, portions that are not stitched by the seam 72 are provided as shown in FIG. It is said. In this embodiment, two communication ports 75 are provided and are arranged to open upward and downward in the airbag 10A.

As shown in FIG. 6, the tether 80 includes a first tether constituent member 81 arranged on the front panel 12 side and a second tether constituent member 82 arranged on the rear panel 14 side.

[0073] In this embodiment, the first tether constituting member 81 has a base piece portion 81a disposed at the center of the front panel 12, and a string-like shape in which the outer peripheral force of the base piece portion 81a extends in the radial direction. Or two strip-shaped tether parts (first tether half) 81b, 81b. The base piece portion 81a is made of a circular woven cloth having a smaller diameter than the front panel 12, and the tether portions 81b and 81b are arranged in a positional relationship opposite to each other across the center of the base piece portion 81a. And

[0074] This base piece 8 la is sewn to the center of the front panel 12 with a seam 83.

[0075] In this embodiment, the second tether constituting member 82 includes a base piece portion 82a disposed at the center portion of the rear panel 14, and a string-like shape or radial shape extending from the outer periphery of the base piece portion 82a. It has two strip-shaped tether parts (second tether half) 82b and 82b. The base piece portion 82a is made of a woven cloth having a smaller diameter than the rear panel 14, and the tether portions 82b and 82b are arranged in a positional relationship opposite to each other across the center of the base piece portion 82a. ing. As shown in FIG. 6, an inflator opening (not shown) that overlaps the inflator opening 16 of the rear panel 14 is provided at the center of the base piece 82a. Bolt through holes (reference numerals omitted) are provided.

[0076] The tip portions of the tether parts 8 lb and 82b of the tether components 81 and 82 are sewn together.

[0077] When attaching the airbag 10A to the retainer 30, the peripheral portion of the inflator opening 24 of the second inner panel 71B and the peripheral portion of the inflator opening of the base piece portion 82a are connected to the rear panel 14 respectively. These are overlapped with the periphery of the opening 16 for the inflator, and these are integrally fixed to the periphery of the inflator mounting port 32 of the retainer 30 with the presser ring 42. As a result, the front panel 12 and the rear panel 14 are connected by a continuous body of the tether portions 81b and 82b. Hereinafter, this tether part 8 lb, 82b continuum is referred to as tether 80. In this embodiment, the peripheral edge force of the front panel 12 is also not provided with the protruding pieces 12a, and the peripheral edges on the left and right sides of the front panel 12 and the rear panel 14 are directly formed by the tear seam 60. Combined with inner bag 70.

[0079] The other configuration of the airbag 10A is the same as that of the airbag 10 shown in Figs. 1 to 3, and the same reference numerals in Figs. 4 to 7 denote the same parts in Figs. .

[0080] Even in the airbag 10A, when the airbag 10A is inflated, the right and left ends of the airbag 10A are respectively connected to the inner side by the tire 60 until the internal pressure of the airbag 1OA reaches a predetermined pressure. Since it is coupled to the bag 70, the outward expansion of the airbag 10A to the left and right end sides is restricted. As a result, inflation of the airbag 10A in the upward and downward direction is promoted, and the airbag 10A is rapidly inflated in the vertical direction.

[0081] Then, when the internal pressure of the airbag 10A exceeds a predetermined pressure, the tear seam 60 breaks and the right and left ends of the airbag 10A and the inner bag 70 are disconnected, so both the left and right ends of the airbag 10A. This allows the airbag 10A to sufficiently inflate in the left-right direction.

[0082] In this embodiment, the front panel 12 and the rear panel 14 are connected by the tether 80, whereby the separation distance between the front panel 12 and the rear panel 14 when the airbag is inflated is regulated. The airbag 10A is prevented from expanding so as to protrude toward the occupant, and the airbag 10A is promoted to expand in the vertical direction and the horizontal direction.

FIG. 8 and FIG. 9 are cross-sectional views of an airbag and an airbag apparatus according to still another embodiment. FIG. 10 is an exploded perspective view of the airbag and the airbag apparatus. FIG. 8 shows the air bag in the middle of inflation. Fig. 9 shows the completion of airbag inflation.

[0084] The airbag 10B of this embodiment has a bag shape formed by sewing a front panel 12 and a rear panel 14, and a gas flow direction regulating panel 90 is installed therein. The configuration and stitching structure of the front panel 12 and rear panel 14 are the same as those in the above-described embodiments.

[0085] In this embodiment, the gas flow direction regulating panel 90 is a central inlet of the rear panel 14. A base piece 91 superimposed on the peripheral edge of the fret opening 16, a left half 92 extending from the left end of the base piece 91, and a right end extending from the right end of the base piece 92 And has half 93. Force not shown in detail In the center of the base piece portion 91, an inflator opening overlapping the inflator opening 16 of the rear panel 14 is provided, and a bolt insertion hole overlapping the bolt insertion hole 20 is provided around this opening. Is provided.

[0086] The left half 92 and the right half 93 each have a strip shape extending in the opposite direction across the base piece 91. The tip of the left half 92 is coupled to the left end of the airbag 10B, and the tip of the right half 93 is coupled to the right end of the airbag 10B.

In this embodiment, when the peripheral portions of the front panel 12 and the rear panel 14 are stitched together, the front ends of the left half 92 and the right half 93 are overlapped with the panels 12 and 14, respectively. By overlapping the left end side and the right end side of the combined body and sewing them together with the seam 15, the ends of the left half 92 and the right half 93 are respectively left and right of the airbag 10B. Combined with the department.

[0088] However, the method of coupling the tip portions of the left half 92 and the right half 93 to the airbag 10B is not limited to this. For example, ear-shaped protrusions extending left and right from the peripheral edge of the front panel 12 and Z or rear panel 14 may be provided, and the tips of the left half 92 and right half 93 may be sewn to the protrusions, respectively. . Also, you can sew and attach the tip of the left half 92 and right half 93 to the center of the front panel 12 or rear panel 14 rather than the peripheral edge.

The left half 92 and the right half 93 are coupled by a tear seam 94 as a coupling means capable of releasing the force between the middle portions in the extending direction. In this embodiment, the tip force of each of the left half 92 and the right half 93 up to the joint by the tear seam 94 is referred to as a tether portion 92a, 93a, respectively.

[0090] The length of the continuous body of the tether portions 92a, 93a in the state of being joined by the tear seam 94 is such that the left end portion and the right end portion of the airbag 10B are connected by the continuous body of the tether portions 92a, 93a. The distance between the left end portion and the right end portion of the airbag 10B when the airbag 10B is inflated in this state is smaller. That is, until the connection between the tethers 92a and 93a by the tear seam 94 is released, the separation distance between the left end portion and the right end portion of the airbag 10B when the airbag 10B is inflated is the continuum of the tethers 92a and 93a. Regulated by The

[0091] When the left half 92 and the right half 93 are joined by the tear seam 94 as described above, the gas flow direction regulating panel 90 is disposed in the inflator opening. The left and right sides of the inflator 36 and the occupant side are surrounded and opened vertically.

In this embodiment as well, the tear seam 94 is configured to be broken when the internal pressure of the airbag 10B becomes equal to or higher than a predetermined value to release the connection between the tether portions 92a and 93a.

[0093] When attaching the airbag 10B to the retainer 30, the peripheral portion of the inflator opening of the base piece 91 is overlapped with the peripheral portion of the inflator opening 16 of the rear panel 14, and these are integrated together. Fix the retainer 30 to the periphery of the inflation port 32 of the retainer 30 with the presser ring 42.

The other configurations of this embodiment are the same as those of the above-described embodiment. In the eighth to LO diagrams, the same reference numerals as those of the above-described embodiment denote the same parts.

In the airbag 10B, when the airbag 10B is inflated, the tether portions 92a and 93a of the gas flow direction regulating panel 90 are kept in contact with each other until the internal pressure of the airbag 10B reaches a predetermined pressure. Are connected by a tear seam 94, and the left end side and the right end side of the airbag 10B are connected via a continuous body of the tether portions 92a and 93a. As a result, the outward expansion of the air bag 10B to the left and right ends is restricted.

[0096] At this time, of the left half portion 92 and the right half portion 93 of the gas flow direction regulating panel 90, the joint portion force by the tear seam 94 is also the partial force to each proximal end side of the inflator 36 and the occupant Since the gas is surrounded by the side and opened in the vertical direction, the gas blown out of the inflator 36 also flows upward and downward into the airbag 10B with the force of the upper and lower openings of the gas flow direction regulating panel 90. .

[0097] In this manner, the gas flow direction regulating panel 90 regulates the outward expansion of the airbag 10B to the left and right ends, and the flow direction of the ejected gas from the inflator 36 in the airbag 10B By being restricted in the vertical direction, the airbag 10B is promoted to expand upward and downward, and the airbag 10B rapidly expands in the vertical direction. [0098] When the internal pressure of the airbag 10B exceeds a predetermined pressure, the tear seam 94 releases the connection between the tether portions 92a and 93a. As a result, the connection between the left end side and the right end side of the airbag 10B is also released, and the airbag 10B is allowed to expand outward on the left and right end sides. As a result, the airbag 10B is sufficiently inflated in the left-right direction.

In this embodiment, since the left half 92 and the right half 93 of the gas flow direction regulating panel 90 are integrally provided via the base piece 91, the gas flow direction regulating panel 90 The structure of the device itself and the mounting structure to the airbag 10B are simple. However, the base piece portion 91 may be omitted, and the left half portion 92 and the right half portion 93 may be formed separately and attached separately to the vicinity of the inflator opening 16.

[0100] FIGS. 11 and 12 are sectional views of an airbag and an airbag apparatus according to still another embodiment. FIG. 13 is an exploded perspective view of the airbag and the airbag apparatus. FIG. 11 shows the airbag in the middle of inflation. Fig. 12 shows the completion of airbag inflation.

[0101] The airbag 10C of this embodiment also has a bag shape formed by stitching the front panel 12 and the rear panel 14, and the gas flow direction regulating panel 100 is installed therein. The configuration and stitching structure of the front panel 12 and rear panel 14 are the same as those in the above-described embodiments.

[0102] In this embodiment, the gas flow direction regulating panel 100 has a strip-like left half portion 101 and a right half portion 102, respectively. One end side of the left half 101 is connected to the left end of the airbag 10C. One end of the right half 102 is connected to the right end of the airbag 10C. These left half 101 and right half 102 also have both left and right side forces of the airbag 10C extending to the center of the airbag 10C.

In this embodiment as well, when the peripheral portions of the front panel 12 and the rear panel 14 are stitched together, the one end sides of the left half 101 and the right half 102 are respectively connected to the panels 12, 14. By overlapping the left and right ends of the overlapped body and stitching them together with a seam 15, the one ends of the left half 101 and the right half 102 are respectively connected to the left and right ends of the airbag 10C. Combined with the part. However, as in the above-described embodiment, the method of coupling the left half 101 and the right half 102 to the airbag 10C on the one end side is limited to this. Not.

[0104] Of the inner side surface of the airbag of the rear panel 14, on the left and right portions of the central inflator opening 16, there are through portions 103 for inserting the left half portion 101 and the right half portion 102, respectively. Is provided.

[0105] As shown in Fig. 13, in this embodiment, each through-hole portion 103 is composed of a small cross in the form of a band or a rectangle. The small cross is overlapped on the inner side surface of the airbag of the rear panel 14 with the longitudinal direction of the small cross as the extending direction of the left half 101 and the right half 102, and both ends in the longitudinal direction are seam (not shown). The rear panel 14 is sewn.

[0106] The middle part in the extending direction of the left half 101 is slidably passed between the through-hole 103 provided on the left side of the opening 16 and the rear panel 14, and the side provided on the right side of the opening 16. A middle part in the extending direction of the right half 101 is slidably passed between the passage 103 and the rear panel 14.

[0107] As shown in Fig. 11, the other end side (end portion on the center side of the airbag) of the left half portion 101 and the right half portion 102 is connected to the airbag 10C by a tear seam 104 as a coupling means capable of releasing the coupling. Combined around the center of

[0108] The length of the continuum of the left half 101 and the right half 102 joined by the tear seam 104 is smaller than the diameter of the rear panel 14. Therefore, when the airbag 1 OC is inflated, the air bag 10C is inflated outwardly from the left and right ends of the airbag 10C until the coupling by the tear seam 104 is released (the left and right ends of the airbag 10C). Is separated by a continuum of the left half 101 and the right half 102.

In this embodiment as well, the tear seam 104 is configured to be broken when the internal pressure of the airbag 10C becomes equal to or higher than a predetermined value to release the connection between the left half 101 and the right half 102. It has been.

[0110] When attaching the airbag 10C to the retainer 30 of the airbag apparatus, the peripheral portion of the inflator opening 16 of the rear panel 14 is overlapped with the peripheral portion of the inflator opening 32 of the retainer 30. Secure with presser ring 42.

[0111] Other configurations of this embodiment are the same as those of the above-described embodiment, and in FIGS. 11 to 13, the same reference numerals as those of the above-described embodiment indicate the same parts! / [0112] In the airbag IOC, when the airbag 10C is inflated, the left half 101 and the right half of the gas flow direction regulating panel 100 are kept until the internal pressure of the airbag 10C reaches a predetermined pressure. The portion 102 is connected by a tear seam 104, and the left end side and the right end side of the airbag 10C are connected via a continuous body of the left half portion 101 and the right half portion 102. This restricts the outward expansion of the airbag 10C to the left and right ends.

[0113] Further, at this time, of the left half 101 and the right half 102, the partial force from the joint portion by the tear seam 104 to each through portion 103 is surrounded by the left and right sides of the inflator 36 and the occupant side, Since the gas is released in the vertical direction, the gas ejected from the inflator 36 flows upward and downward into the airbag 10C from the upper and lower open parts.

[0114] In this way, the gas flow direction regulating panel 100 regulates the outward expansion of the airbag 10C to the left and right ends, and the flow direction of the jet gas from the inflator 36 in the airbag 10C By being restricted in the vertical direction, the airbag 10C is promoted to expand upward and downward, and the airbag 10C is rapidly expanded in the vertical direction.

[0115] When the internal pressure of the airbag 10C exceeds a predetermined pressure, the tear seam 104 releases the connection between the left half 101 and the right half 102. Thus, the connection between the left end side and the right end side of the airbag 10C is also released, and the airbag 10C is allowed to expand outward on the left and right ends. As a result, the airbag 10C is sufficiently inflated in the left-right direction.

FIGS. 14 and 15 are cross-sectional views of an airbag and an airbag apparatus according to still another embodiment. FIG. 16 is an exploded perspective view of the airbag and the airbag apparatus. FIG. 14 shows the airbag in the middle of inflation. Figure 15 shows the completion of airbag inflation.

[0117] The airbag 10D of this embodiment is the same as the airbag 10C of Figs. 11 to 13 in the rear panel 14 (in this embodiment, the right half 102 of the gas flow direction regulating panel 100 is The vent hole 18 is provided in a region that overlaps with the through-hole 103A of the one passing through), and the opening 105 that overlaps with the vent hole 18 is provided in the through-hole 103A. .

[0118] As shown in Fig. 16, this piercing portion 103A is also formed of a small cross in the shape of a band or a rectangle. In this small cross, the extending direction of the pair of sides is defined as the extending direction of the right half 102 and the crossing direction. The other side of the rear panel 14 is sewn to the rear panel 14 with a seam (not shown). A vent hole 18 and a substantially equal-diameter opening 105 are formed near the center of the cross, and the vent hole 18 and the opening 105 are arranged so as to be substantially concentric. The diameters of the vent hole 18 and the opening 105 are smaller than the width of the right half 102.

[0119] A middle portion in the extending direction of the right half 102 is slidably passed between the through-hole 103A and the rear panel 14. In this state, as shown in FIG. 14, the opening 105 and the vent hole 18 are closed by the right half 102.

In this embodiment, a vent hole 18 is not provided in a region of the rear panel 14 that overlaps the left passage portion 103 through which the left half portion 101 is penetrated. Although not shown in the figure, a vent hole 18 is also provided in this area, and the left half 101 has a through-hole 103A with an opening 105 as the through-hole in the right half 102. May be provided.

[0121] Further, vent holes may be provided in the rear panel 14 other than the region overlapping with the through-hole 103A. In addition, an auxiliary vent hole having a smaller diameter than the opening 105 and the vent hole 18 is provided in a portion of the right half portion 102 that overlaps the opening 105, and the inside and outside of the airbag 10D are always in communication with each other through the auxiliary vent hole. It is good also as a structure. Alternatively, the width of the right half 102 may be smaller than the diameters of the opening 105 and the vent hole 18.

[0122] Other configurations of the airbag 10D are the same as those of the airbag 10C of Figs. 11 to 13. In Figs. 14 to 16, the same reference numerals as those of Figs. 11 to 13 denote the same parts.

[0123] Even in this airbag 10D, when the airbag 10D is inflated, the left half 101 and the right half of the gas flow direction regulating panel 100 are kept until the internal pressure of the airbag 10D reaches a predetermined pressure. The portion 102 is connected by a tear seam 104, and the left end side and the right end side of the airbag 10D are connected via a continuous body of the left half portion 101 and the right half portion 102. As a result, the outward expansion of the airbag 10D to the left and right ends is restricted.

[0124] Further, at this time, of the left half portion 101 and the right half portion 102, the partial force from the joint portion by the tear seam 104 to each through portion 103 is surrounded by the left and right sides of the inflator 36 and the passenger side Since the gas is released in the vertical direction, the gas ejected from the inflator 36 flows upward and downward into the airbag 10D from the upper and lower open parts. [0125] Thus, the airbag lOD is accelerated to be expanded in the vertical direction, and the airbag 10D is rapidly expanded in the vertical direction.

Furthermore, in the airbag 10D, at the stage where the left half 101 and the right half 102 are joined by the tear seam 104, the left half 101 and the right half 102 are not connected. The portions 103 and 103A cannot be pulled out, and the opening 105 and the vent hole 18 of the through-hole 103A are closed by the right half portion 102 as shown in FIG. This restricts gas from flowing out of the airbag 10D through the opening 105 and the vent hole 18, and the internal pressure of the airbag 10D rises quickly. As a result, the inflation of the airbag 10D is accelerated.

[0127] When the internal pressure of the airbag 10D exceeds a predetermined pressure, the tear seam 104 breaks and the connection between the left half 101 and the right half 102 is released. Thereby, the connection between the left end side and the right end side of the airbag 10D is also released, and the airbag 10D is allowed to expand outwardly on the left and right end sides. As a result, the airbag 10D is sufficiently inflated in the left-right direction.

[0128] Further, as the left and right end portions of the airbag 10D are inflated outward in this manner, the left half portion 101 and the right half portion 102 are respectively pulled sideways, and the respective through portions 103 , Extracted from 103A. As a result, the opening 105 and the vent hole 18 of the through-hole 103A as shown in FIG. 15 are opened, and the inside and outside of the airbag 10D communicate with each other through the opening 105 and the vent hole 18. When an occupant enters the vehicle, gas flows out of the airbag 10D through the opening 105 and the vent hole 18, and the occupant is softly restrained by the airbag 10D.

[0129] Each of the above embodiments shows an example of the present invention, and the present invention is not limited to each of the above embodiments.

[0130] For example, in each of the above-described embodiments, a simple tear seam is used as the coupling means that can be decoupled. However, when the internal pressure of the other coupling means, for example, the airbag becomes a predetermined value or more, peeling occurs. A low-adhesive adhesive or the like may be used.

[0131] This application is based on a Japanese patent application filed on June 16, 2006 (Japanese Patent Application No. 2006-1 67643), which is incorporated by reference in its entirety.

Claims

The scope of the claims

[1] An air bag that is inflated by gas generated by a gas generator,

A front panel disposed on the occupant side and a rear panel disposed on the opposite side of the occupant; the front panel and the rear panel are joined to each other at their peripheral edges, and an inner bag is provided in the airbag. And

The inner bag is provided with a communicating portion that communicates the inside of the inner bag and the inside of the airbag.

First, gas is introduced into the inner bag to inflate the inner bag, and then the gas flows out from the inner bag into the airbag via the communication portion, whereby the remaining portion of the airbag is inflated. In the airbag configured as follows,

The left and right ends of the airbag are coupled to the inner bag by coupling means capable of releasing the coupling, respectively, thereby restricting the lateral outward expansion of the left and right ends of the airbag,

The airbag is characterized in that the coupling means is configured to release the coupling when the internal pressure of the airbag exceeds a predetermined pressure.

[2] In Claim 1, the inner bag is connected to the front panel, whereby a separation distance between the front panel and the rear panel when an airbag is inflated is restricted. Airbag to do.

[3] In Claim 1, a tether for connecting the front panel and the rear panel is provided in the airbag, and the tether prevents the front panel from the rear panel when the airbag is inflated. The air bag is characterized in that the separation distance is regulated.

[4] An air bag that is inflated by a gas generator-powered gas,

A front panel disposed on the occupant side and a rear panel disposed on the opposite side of the occupant. The front panel and the rear panel have their peripheral edges coupled to each other. Opening is provided,

In the airbag provided with a gas flow direction regulating panel for regulating the gas generator force and the flow direction of the gas ejected into the airbag around the opening, The gas flow direction regulating panel has a left half disposed on the left side of the opening and a right half disposed on the right side of the opening,

The left half of the airbag is connected to the left half, and the right end of the airbag is connected to the right half,

The left half part and the right half part are coupled by a coupling means capable of releasing coupling, and in a state before the coupling means releases the coupling, Expansion to is regulated by the gas flow direction regulating panel,

[5] In claim 4, in the left half portion, the left end side force of the airbag also extends to the vicinity of the left side of the opening, and the right half portion extends from the right end side of the airbag to the opening. Extending to the right side of

The middle part in the extending direction of the left half part and the middle part in the extending direction of the right half part are coupled by the coupling means, so that the left and right end parts of the airbag are expanded laterally outward. An airbag characterized by being regulated.

[6] The airbag according to claim 5, wherein the left half and the right half are integrally provided.

[7] In claim 4, in the left half portion, the left end of the airbag also extends to the center side of the airbag, and the right half includes the right end side force of the airbag. It extends to the center of the airbag,

An insertion portion in which a middle portion in the extending direction of the left half portion is inserted is provided in the vicinity of the left side of the opening on the inner side surface of the airbag of the rear panel. An insertion part is provided in which the middle part of the extending direction of the part is inserted,

That the airbag central side ends of the left half part and the right half part are coupled by the coupling means, so that the lateral outward expansion of the left and right ends of the airbag is regulated. A featured airbag.

[8] In Claim 7, a vent hole is provided in a region overlapping with at least one of the insertion portions of the rear panel, An opening that overlaps the vent hole is provided in the through-hole disposed on the vent hole.

When the left half or the right half is inserted through the insertion portion, the opening and the vent hole are blocked by the left half or the right half,

An air bag characterized in that the opening and the vent hole are opened when the left half portion or the right half portion is pulled out, and the inside and outside of the airbag communicate with each other through the opening and the vent hole.

9. The airbag according to claim 1, wherein the coupling means is a tear seam.

10. The airbag according to claim 4, wherein the coupling means is a tear seam.

[11] In an airbag device comprising an airbag and a gas generator for inflating the airbag,

The airbag according to claim 1, wherein the airbag is an airbag device.

[12] In an airbag device comprising an airbag and a gas generator for inflating the airbag,

The airbag device according to claim 4, wherein the airbag is an airbag device.

[13] In Claim 1, the inner bag has a first inner panel disposed on the occupant side and a second inner panel disposed on the opposite side of the occupant, the first inner panel and the first inner panel 2The inner panel has their peripheral parts joined together,

The non-peripheral parts facing each other of the first inner panel and the second inner panel are overlapped with each other, and the end part of the air nog is further overlapped with the overlapping part, and these can be integrally released by the connecting means. The air bag is characterized by being coupled to the air bag.

[14] In claim 1, at least one peripheral edge of the front panel and the rear panel is provided with a pair of ear-shaped protrusions in the left-right direction. The airbag is coupled to the inner bag by a coupling means so that the coupling can be released.

4. The tether according to claim 3, wherein one end of the first tether half connected to the front panel and the other end of the second tether half connected to the rear panel are coupled to each other. An air bag characterized by