JP6208025B2 - Airbag device - Google Patents

Description

  The present invention relates to an airbag device that inflates and deploys to protect an occupant when a vehicle collides.

  Patent Documents 1 and 2 are for reducing the weight of an airbag device, and disclose a configuration in which an airbag is wrapped by a sheet-like member and used as a conventional metal housing. During inflation and deployment of the airbag, the lid is split by the deployment and deployment force of the airbag and the airbag is deployed from the opening. Therefore, it is necessary to prevent the positional relationship between the airbag and the lid from being greatly separated. .

  Therefore, Patent Document 1 discloses a configuration in which the airbag is held at a fixed position inside the lid by a belt connected to the inflator and the lid side peripheral wall portion.

  Moreover, in patent document 2, while extending the extension part which can be arrange | positioned in the attitude | position along the inner surface of a lid, the said extension part is accommodated in the ceiling part of the sheet-like member which wrapped the folded airbag The structure which provides the possible accommodating part and accommodates the said extension part in the said accommodating part is disclosed.

JP 2011-93446 A JP 2013-35325 A

  However, in patent document 1, it is a structure which cannot be applied with respect to the structure in which the lid side surrounding wall part is not provided. Moreover, even if it is the structure provided with the lid side surrounding wall part, since both the inflator and the lid in the assembly | attachment state of an airbag apparatus are not pushed in the direction which leaves | separates, an assembly state is not stabilized.

  Moreover, in patent document 2, since the accommodating part which can accommodate an extension part is formed in the sheet-like member which wrapped the folded airbag, the operation | work which accommodates an extension part in an accommodation part is difficult. . In addition, since the extension portion is disposed in a posture along the inner surface of the lid, the airbag is not pushed from the extension portion in the assembled state of the airbag device, so that the lid and the inflator are pushed away from each other. Otherwise, the assembled state of the airbag, inflator, etc. with respect to the lid may not be stable.

  Therefore, the present invention can realize the configuration for preventing the inflator and the lid from separating during the inflation and deployment of the airbag by a simple assembling work without using the lid side peripheral wall portion, and An object is to stabilize the assembled state of an airbag, an inflator and the like with respect to the lid.

  In the airbag device according to the first aspect, a pair of deployment doors and respective base end portions are integrally provided in a portion along the base end portion of the deployment door, and each distal end portion is provided on the deployment door. A lid including a pair of extending portions extending in a direction protruding from the back surface, an inflator disposed on the back surface side of the pair of deployment doors and capable of generating gas, and the pair of extending portions. Supplied from the inflator, arranged in a state of being folded between the surface facing the inflator of the pair of extension parts and the inflator in a state where the respective leading end parts are bent toward each other. An airbag that can be inflated and deployed by a gas, a peripheral sheet portion that surrounds the outer periphery of the airbag in a folded state by a flexible sheet-like member, and the airbag in a folded state The lid The airbag, which is formed in a bag shape including a ceiling portion that covers the portion and a bottom portion that is opposed to the ceiling portion through the airbag folded, is provided on the ceiling portion. A packaging member that is deployed from a breakable portion, a fixing member that fixes the inflator, the airbag, and the bottom portion of the packaging member in a state where gas generated in the inflator can be supplied into the airbag, and A pair of holding members whose one end side portion is connected to the extension portion and whose other end side portion is connected to the fixing member side, and the extension portion is provided at the one end side portion of the holding member. And the pair of extending portions are connected to the connecting portions of the pair of holding members, and the one end side portions of the pair of holding members are connected to the pair of extending portions. In the state, the pair The extending portion is bent in a direction to bring the tip portions closer to each other. In this state, of the pair of holding members, the pair of bent extending portions are on the surface side facing the inflator side. In the state where the ceiling portion of the packaging member fixed to the fixing member is in contact with the provided portion, the other end side portion of the pair of holding members is connected to the fixing member side. is there.

  A 2nd aspect is an airbag apparatus which concerns on a 1st aspect, Comprising: The said connection part of the said holding member opens toward the other end side of the said holding member, The said extension part passes through the opening. It is set as the bag-shaped accommodating part which can accommodate this.

  A 3rd aspect is an airbag apparatus which concerns on a 2nd aspect, Comprising: The latching | locking part is provided in the said extension part, and the to-be-latched part which can be latched with the said latching | locking part inside the said accommodating part Is provided.

  A 4th aspect is an airbag apparatus which concerns on a 3rd aspect, Comprising: The said latching | locking part and the said to-be-latched part are the states in which the front-end | tip part of the said extension part contacted the back of the said accommodating part. , Are provided at positions where they are engaged with each other.

  A 5th aspect is an airbag apparatus which concerns on a 3rd or 4th aspect, Comprising: The said extension part is formed in the plate shape which can be arrange | positioned along the said back surface of the said deployment door in the bent state. A pair of the locking portions are provided on both sides of the extending portion, and a pair of the locked portions are provided at positions corresponding to the pair of the locking portions in the housing portion. .

  A 6th aspect is an airbag apparatus which concerns on any one aspect of the 3rd-5th, Comprising: The said extension part is a plate which can be arrange | positioned along the said back surface of the said deployment door in the bent state The locking portion is provided at the intermediate portion in the width direction of the extending portion, and the locked portion is provided at a position corresponding to the locking portion in the housing portion. .

  A seventh aspect is the airbag device according to any one of the third to sixth aspects, wherein the holding member is formed of a flexible sheet-like member, and the locked portion is , Formed by joining the overlapping portions of the sheet-like members in the housing portion.

  An eighth aspect is the airbag device according to any one of the second to seventh aspects, wherein the holding member is configured by a flexible sheet-like member, The sheet-like member is formed by folding back end portions and joining both side portions thereof.

  A ninth aspect is the airbag device according to any one of the first to eighth aspects, wherein the airbag includes a surface facing the inflator side of the pair of bent extended portions, and the airbag device. It is disposed in a contracted state with the inflator.

  A 10th aspect is an airbag apparatus which concerns on any one 1st-9th aspect, Comprising: The base end part of the said extension part is provided in the said expansion | deployment door.

  An eleventh aspect is an airbag device according to any one of the first to tenth aspects, wherein the holding member is arranged on the back surface side of the lid out of the outer periphery of the folded airbag. The standing wall extends so as to cover at least a part of the portion not provided.

  According to the airbag apparatus according to the first aspect, the inflator and the lid are held by the holding member so as not to be separated from each other during the inflation and deployment of the airbag. Moreover, since the holding member is connected to the extending portion, the holding state can be realized without using the lid-side peripheral wall portion.

  Moreover, the assembly operation | work of the inflator with respect to a lid, an airbag, a packaging member, and a fixing member can be performed as follows using a holding member. That is, in a state where the one end side portions of the pair of holding members are connected to the pair of extending portions, the pair of extending portions are bent in a direction in which the respective distal end portions are brought close to each other. In this state, the ceiling portion of the packaging member fixed to the fixing member is in contact with the portion of the pair of holding members that is provided on the surface side facing the inflator side of the bent pair of extending portions. Thus, the other end portions of the pair of holding members are connected to the fixed member side. Thereby, a fixing member is hold | maintained with respect to a pair of extension part by a pair of holding member, and an inflator, the folded-up airbag, and a packaging member are hold | maintained by the fixing member. For this reason, the work of assembling the inflator, the airbag, etc. with respect to the lid can be easily performed.

  Further, since the airbag is disposed in a state of being folded between the inflator and the surface of the pair of bent extended portions facing the inflator side, the pair of extended portions return to the original shape. The air bag, the inflator, and the fixing member are pushed in a direction away from the lid by the force to be tried, and these are held by the pair of holding members so as to be pressed into the fixing member side. For this reason, an airbag, an inflator, and a fixing member become difficult to wobble, and these assembly states can be stabilized.

  Moreover, according to the 2nd aspect, since a pair of extension part is accommodated in the accommodating part of a pair of holding member, the one end side part of a pair of holding member and a pair of extension part can be connected. The connecting operation can be easily performed, and the assembly work of the airbag and the like from this point can be easily performed.

  According to the 3rd aspect, the connection state of the one end side part and extension part of a holding member can be maintained more reliably by accommodating an extension part in the accommodating part of a holding member.

  According to the fourth aspect, the locking portion and the locked portion are accommodated by accommodating the leading end portion of the extending portion in the accommodating portion until the leading end portion of the extending portion contacts the back of the accommodating portion. It can be easily locked. Moreover, the locked state can be made constant.

  According to the fifth aspect, since the pair of the locking portions are provided on both sides of the extension portion, the extension portion is extended while making a large portion of the distal end portion of the extension portion contact the back of the housing portion. The retaining portion and the accommodating portion can be prevented from being detached. Thereby, the connection state of the one end side part and extension part of a holding member can be maintained more reliably.

  According to the 6th aspect, the position shift of the extension part in the width direction of an extension part and an accommodating part can be suppressed.

  According to the 7th aspect, a to-be-latched part can be formed easily.

  According to the 8th aspect, a bag-shaped accommodating part can be formed easily.

  According to the ninth aspect, the airbag, the inflator, and the fixing member are pushed in the direction away from the lid even by the force of the contracted airbag to return to the original folded form. For this reason, an airbag, an inflator, and a fixing member become difficult to wobble more, and these assembly states can be stabilized more.

  According to the 10th aspect, since the base end part of the said extension part is provided in the expansion | deployment door, it is easy to open with a expansion | deployment door and scattering of an expansion | deployment door can also be suppressed.

  According to the 11th aspect, the expansion | deployment deployment to the radial direction of an airbag can be suppressed more reliably.

It is sectional drawing which shows the whole airbag apparatus structure which concerns on embodiment. It is a perspective view which shows the state which has arrange | positioned the holding member on the outer periphery while covering the folded airbag with a packaging member. It is explanatory drawing which shows an extension part and a holding member. It is an expanded view which shows the sheet-like member for manufacturing a holding member. It is explanatory drawing which shows the state which folded the sheet-like member. It is explanatory drawing which shows the state which joined the folded sheet-like member. It is explanatory drawing which shows the manufacturing process of an airbag apparatus. It is explanatory drawing which shows the manufacturing process of an airbag apparatus. It is explanatory drawing which shows the manufacturing process of an airbag apparatus. It is explanatory drawing which shows the manufacturing process of an airbag apparatus. It is explanatory drawing which shows the manufacturing process of an airbag apparatus. It is explanatory drawing which shows the manufacturing process of an airbag apparatus. It is explanatory drawing which shows the initial state of an airbag apparatus. It is explanatory drawing which shows operation | movement of an airbag apparatus. It is explanatory drawing which shows operation | movement of an airbag apparatus. It is explanatory drawing which shows the extension part and holding member which concern on a 1st modification. It is a top view which shows the extension part which concerns on a modification same as the above. It is a top view which shows the state which accommodated the extension part in the accommodating part of the holding member which concerns on a modification same as the above. It is an expanded view which shows the sheet-like member for forming the holding member which concerns on a 2nd modification. It is explanatory drawing which shows the state which folded the sheet-like member. It is a top view which shows a holding member. It is explanatory drawing which shows the airbag apparatus which concerns on a 3rd modification. It is explanatory drawing which shows the positional relationship of the airbag, the holding member, and a standing wall in the XXIII-XXIII line | wire of FIG. It is explanatory drawing which shows the airbag apparatus which concerns on a 4th modification. It is explanatory drawing which shows the state which the airbag of the airbag apparatus same as the above expand | deployed. It is explanatory drawing which shows the manufacturing process of the airbag apparatus which concerns on a 5th modification. It is explanatory drawing which shows the manufacturing process of an airbag apparatus same as the above. It is explanatory drawing which shows the manufacturing process of an airbag apparatus same as the above. It is explanatory drawing which shows the initial state of an airbag apparatus. It is explanatory drawing which shows operation | movement of an airbag apparatus same as the above. It is explanatory drawing which shows operation | movement of an airbag apparatus same as the above.

{Embodiment}
Hereinafter, the airbag apparatus according to the embodiment will be described.

<About the overall configuration>
FIG. 1 is a cross-sectional view showing the overall configuration of an airbag device 20 according to this embodiment. FIG. 2 covers a folded airbag 30 with a packaging member 40, and a holding member 60 is provided on the outer periphery thereof. It is a perspective view which shows a state. In addition, in FIG. 1, the state which integrated the airbag apparatus 20 in the instrument panel 10 is shown. FIG. 1 shows a cross section in a plane along the longitudinal direction of the vehicle.

  The airbag device 20 is incorporated in the instrument panel 10 in front of the passenger seat of the vehicle, and inflates and deploys in front of the passenger seat occupant when the vehicle collides, etc., and receives the passenger seat occupant and absorbs the impact. It is configured.

  That is, the instrument panel 10 is disposed in front of the passenger seat of the vehicle. The instrument panel 10 includes an instrument panel body 10a that is fixed to the vehicle body, and a lid 11 that is attached to the instrument panel body 10a. An opening 10h (here, a substantially rectangular opening) is formed in the instrument panel body 10a, and the lid 11 is fitted and fixed to the opening 10h. The lid 11 is fixed by, for example, engaging an engaging portion 11a formed on the lid 11 with an engaged portion (not shown) formed on the instrument panel main body 10a. But the lid panel part corresponded to the lid 11 may be integrally molded with the instrument panel.

  A vehicle body side member 18 that is a member fixed to the body of the vehicle is disposed inside the instrument panel 10. Here, a member (a so-called lean hose) that is fixed to the body and disposed along the vehicle width direction in the instrument panel 10 is assumed as the vehicle body side member 18. The instrument panel 10 is fixed to the vehicle body by a mounting structure including a known structure, and the vehicle body side member is also fixed to the vehicle body. Therefore, the instrument panel 10 and the vehicle body side member 18 are fixed. The positional relationship is maintained. Therefore, by attaching the airbag device 20 to the vehicle body side member 18, the airbag device 20 is more reliably disposed at a fixed position with respect to the instrument panel 10.

  The airbag device 20 includes the lid 11, the inflator 22, the airbag 30, the packaging member 40, the fixing member 50, and a pair of holding members 60.

  The lid 11 is a member formed of resin or the like, and includes a frame portion 11f, a pair of deployment doors 12, and a pair of extending portions 14.

  The frame portion 11f is a frame-like region portion that closes the four inner circumferences of the opening 10h. The engaging portion 11a protrudes from the inner surface of the frame portion 11f, and the frame portion 11f is attached to the instrument panel body 10a via the engaging portion 11a.

  The pair of deployment doors 12 is a rectangular region portion provided at the center of the frame portion 11f, and is provided so as to be split open with respect to the frame portion 11f in a state where the respective front end portions are opposed to each other. Yes. Here, an H-shaped tear line 11 </ b> L is formed on the inner surface of the lid 11. Then, the lid 11 is split along the tear line 11L by the inflation and deployment of the airbag 30, so that the airbag 11 is divided into a pair of deployment doors 12. The pair of deployment doors 12 are bent at a line connecting both ends of the two vertical lines of the H-shaped tear line 11L so as to open outward. The base end portion of the lid 11, that is, the line connecting the two end portions of the two vertical lines of the H-shaped tear line 11L is preferably formed on the thin hinge portion 12b and configured to be easily bent. But this is not essential. Moreover, the structure by which the whole lid attached to opening of an instrument panel main body is opened as a pair of expansion | deployment door by inflation expansion | deployment of an airbag may be sufficient.

  The pair of extending portions 14 are integrally provided at their base end portions along the base end portions of the pair of deploying doors 12, and the respective distal end portions are directed toward the back surfaces of the pair of deploying doors 12. It is provided to extend.

  The lid 11 may be integrally molded with the instrument panel 10.

  The inflator 22 includes an ignition device, a gas generating agent, and the like, and is disposed on the back side (inside) of the deployment door 12. The inflator 22 is configured to receive an ignition command signal from an impact detection unit or the like installed in the vehicle itself and burn the gas generating agent by the ignition device, thereby generating gas. Here, the inflator 22 is formed in a short cylindrical shape, and a collar portion 24 is formed on the outer periphery thereof with a metal plate or the like. The collar part 24 is formed in an annular plate shape, for example. The collar portion 24 is formed with a screw insertion hole through which the screw portion 25 can be inserted.

  An inflator fixing member 46 is fixed to the inflator 22. The inflator fixing member 46 is a member formed of a metal plate or the like, and is here formed in a shape that bends in a substantially L shape. And here, the nut 29 is screwed and fastened to the screw portion 25 in a state where the screw portion 25 is inserted into the one end portion of the inflator fixing member 46, so that one end portion of the inflator fixing member 46 is a fixing bracket described later. The inflator fixing member 46 is fixed to the inflator 22 by fastening between the nut 28 and the nut 29. The other end of the inflator fixing member 46 is formed in a shape that can be fixed to the vehicle body side member 18. Here, the fixing bolt 18B protruding from the vehicle body side member 18 is inserted into the other end of the inflator fixing member 46, and the nut 18N is screwed and fastened to the fixing bolt 18B. Is fixed to the vehicle body side member 18. The inflator 22 is fixed to a fixed position inside the deployment door 12 by fixing the inflator fixing member 46 to the vehicle body side member 18.

  The fixing of the inflator fixing member 46 to the inflator 22 or the vehicle body side member 18 is not limited to the above example, and caulking, welding, a fitting structure, or a composite configuration thereof may be used.

  The airbag 30 is formed in a bag shape having a gas inlet by a flexible sheet-like member such as cloth. The inflator 22 is attached to the airbag 30 at a position and posture capable of supplying gas into the airbag 30 through the gas inlet. In the normal state, the airbag 30 is folded and disposed inside the deployment door 12. More specifically, the airbag is a surface of the pair of extending portions 14 facing the inflator 22 side in a state in which the pair of extending portions 14 are bent in a direction in which the distal end portions approach each other, as will be described later. And the inflator 22 are arranged in a folded state. The folding structure of the airbag 30 is a structure that is folded in a crumpled manner even if the airbag 30 is folded in a bellows shape, a roll shape, or a folding method that combines them along a predetermined folding line. It may be. When the vehicle 30 is inflated and deployed at the time of a vehicle collision or the like, the airbag 30 is opened by the gas supplied from the inflator 22 through the gas inlet so that the deployment door 12 is opened and protrudes outward from the instrument panel 10. It expands and expands and expands in a bag shape toward the passenger seat passenger side, which is the vehicle interior side.

  The fixing member 50 is configured to be able to fix the inflator 22, the airbag 30, and the bottom portion 42 of the packaging member 40 in a state where gas generated in the inflator 22 can be supplied into the airbag 30.

  Here, the fixing member 50 includes a fixing bracket 28, a screw portion 25, a collar portion 24, and a nut 29.

  The fixed bracket 28 is a member formed of metal or the like. The fixed bracket 28 is formed with an opening in which the inflator 22 can be disposed, and a threaded portion 25 is projected. The nut 29 is configured to be screwable with the screw portion 25.

  Then, with the fixing bracket 28 disposed inside the gas inlet of the airbag 30, the screw portion 25 is inserted into a fixing hole formed around the gas inlet in the airbag 30. Further, the inflator 22 is disposed at the gas inlet of the airbag 30, the collar portion 24 is disposed on the outside of the fixed bracket 28, and the screw portion 25 is inserted through the collar portion 24. In this state, the nut 29 is screwed and tightened to the screw portion 25 protruding outward from the collar portion 24. As a result, a portion around the gas introduction port of the airbag 30 is sandwiched between the flange portion 24 and the fixing bracket 28, and the inflator 22 and the airbag 30 are fixed. Another plate-like member may be disposed between the fixing bracket 28 and the nut 29, and the role of receiving the inflation of the airbag 30 on the inflator 22 side may be fulfilled by this plate-like member.

  Further, a holding member 60 and a packaging member 40 which will be described later are sandwiched and fixed between the collar portion 24 and the fixing bracket 28.

  One end side portion of the pair of holding members 60 is connected to the pair of extending portions 14, and the other end side portion is connected to the portion on the fixing member 50 side. The pair of holding members 60 are preferably provided partially around the folded airbag 30. The holding member 60 holds the fixing member 50 and the inflator 22 so that the extension portion 14 and the lid 11 are not separated from each other. The holding member 60 will be further described later.

  The packaging member 40 is a member formed by a flexible sheet-like member, and surrounds the folded airbag 30 before the airbag 30 is inflated. The packaging member 40 is broken by the inflation of the airbag 30 to allow the airbag 30 to be inflated and deployed.

  Here, the packaging member 40 is folded and sewn so that the sheet-like member has a rectangular parallelepiped box shape that can accommodate the folded airbag 30. That is, the packaging member 40 has a peripheral wall portion 45 that surrounds the outer periphery of the airbag 30 in a folded state, a ceiling portion 44 that covers a lid 11 side portion of the airbag 30 in a folded state, and a ceiling portion 44. The airbag 30 that is formed in a bag shape including the bottom portion of the air bag 30 that is opposed to the folded airbag 30 is deployed from a breakable portion (described later) provided in the ceiling portion 44. It is configured.

  An inflator mounting hole in which the inflator 22 can be disposed is formed at the bottom of the packaging member 40 on one main surface side, and a fixing hole is formed around the mounting hole. And the said bottom part of the packaging member 40 is arrange | positioned between the collar part 24 and the fixing bracket 28, and the outer side of the airbag 30, the inflator 22 is arrange | positioned in an inflator attachment hole, and the screw part 25 is fixed to a fixing hole. To be inserted. As a result, the portion around the inflator mounting hole of the packaging member 40 is sandwiched between the flange portion 24 and the fixed bracket 28 together with the portion around the gas inlet of the airbag 30, and the packaging member 40 is inflated. Fixed against.

  In addition, a rupture line 44 a is formed as a breakable portion on the ceiling portion 44 on the opposite side of the packaging member 40 from the inflator 22. The fracture line 44a is a part that is easier to break than the other parts, and is here formed by a partial cut line in the thickness direction.

  The packaging member 40 covers the folded airbag 30 in a normal state, and the airbag 30 is more reliably maintained in a folded state by the packaging member 40. When the packaging member 40 is broken at the breaking line 44 a by the inflation and deployment of the airbag 30, the packaging member 40 covers the entire periphery of the airbag 30 with the peripheral wall portion 45, and the airbag 30 is attached to the inflator 22 by the bottom portion 42. While being supported from the side, a portion where the breaking line 44a is broken is opened as an opening, and the airbag 30 is inflated and deployed from the opening.

<About the extension>
FIG. 3 is an explanatory view showing the extending portion 14 and the holding member 60. Note that, in FIG. 3, in order to distinguish from the joining line indicated by the dotted line, the edge of the sheet-like member in the holding member 60 that overlaps the other is indicated by a two-dot chain line (showing the subsequent holding member) The same applies to each figure).

  A pair of extending portions 14 is provided in each of the portions along the base end portions of the pair of deployment doors 12. The extending portion 14 is formed on a plate-like member that protrudes along an inner portion of the base end side line (hinge portion 12 b) of the deployment door 12. That is, the base end portion of the extending portion 14 is provided on the deployment door 12. The base end portion of the extending portion may be provided on the base end side line of the deployment door 12 or on the outer side of the base end side line. The latter example will be described later in a modification. It is preferable that the base end portion of the extending portion 14 is disposed as close as possible to the base end side line of the deployment door 12.

  The extending portion 14 is formed in an elongated plate shape along the base end side line of the deployment door 12. It is preferable that the extending portion 14 is formed as much as possible with respect to the base end side line of the deployment door 12. The distal end portion of the extending portion 14 is formed in a linear edge shape extending along the width direction of the extending portion 14. The extending portion 14 can be changed in posture between a posture orthogonal to the inner surface of the deployment door 12 and a posture along the inner surface. That is, at the time when the lid 11 is molded, the extending portion 14 is configured to extend in a direction protruding from the back surface of the deployment door 12. Here, the extending portion 14 is orthogonal to the back surface of the deployment door 12. And it is comprised so that a pair of extension part 14 can be bent and deformed to the attitude | position along the back surface of the expansion | deployment door 12 so that the front-end | tip part of a pair of extension part 14 may mutually approach. In this state, the plate-like extension portion 14 is disposed along the back surface of the deployment door 12. The extending portion 14 may be formed thinly so that the extending portion 14 can be easily changed in posture between the above-described postures, and a groove or the like is formed at the proximal end portion of the extending portion 14. Also good.

  Further, a locking portion 15 is formed on the extending portion 14. Here, a locking portion 15 is formed in the intermediate portion (here, the central portion) of the extending portion 14 in the width direction.

  The locking portion 15 is formed in a shape that can lock a locked portion 64 described later. Here, the locking portion 15 is formed in a concave shape including an introduction portion 15a that gradually narrows from the distal end side to the back side of the extension portion 14 and a wide portion 15b that continues to the introduction portion 15a. (See FIG. 3). A portion between the introduction portion 15a and the wide portion 15b is formed in an edge portion 15c along the width direction of the wide portion 15b. Then, when a locked portion 64 to be described later is introduced into the wide portion 15b through the introducing portion 15a, the locked portion 64 is pulled out to the edge portion 15c between the introducing portion 15a and the wide portion 15b. Stops and locks.

<About holding member>
As shown in FIGS. 2 and 3, the pair of holding members 60 are provided on both sides of the folded airbag 30, here, on both sides on the long side in the form of the airbag 30 in plan view. .

  The holding member 60 is formed of a flexible sheet-like member, and one end side portion thereof is connected to the extending portion 14, and the other end side portion thereof is connected to the fixing member 50.

  More specifically, the holding member 60 is formed to have the same width as the width of both sides of the folded airbag 30, here, the width of the long side of the packaging member 40.

  One end portion of the holding member 60 is formed in a shape that gradually narrows toward the distal end side, and the distal end portion is coupled to the fixing member 50. That is, an arc-shaped inflator disposition recess 61 in which the inflator 22 can be partially disposed is formed at the center in the width direction of the tip of the one end side portion of the holding member 60. Further, a fixing hole 61 h is formed around the inflator disposing recess 61. Then, one end side portion of the holding member 60 is disposed between the flange portion 24 and the fixed bracket 28 and outside the packaging member 40, the inflator 22 is disposed in the inflator disposing recess 61, and the screw portion 25. Is inserted into the fixing hole 61h. As a result, between the flange portion 24 and the fixing bracket 28, the portion around the inflator disposition recess 61 in the one end side portion of the holding member 60 is the portion around the gas inlet in the airbag 30 and the packaging member 40. The one end side portion of the holding member 60 is also fixed to the inflator 22.

  In addition, a bag-like storage portion 62 is formed as a connecting portion at one end portion of the holding member 60. The accommodating part 62 opens toward the other end side of the holding member 60, and the extension part 14 can be accommodated in the accommodating part 62 through the opening of the accommodating part 62. The width of the accommodating portion 62 is preferably set to be equal to or larger than the width of the extending portion 14 and the same as the width of the extending portion 14. Moreover, it is preferable that the depth of the accommodating part 62 is the same as the protrusion dimension of the extension part 14, or is set smaller than the protrusion dimension. By accommodating the extending portion 14 in the accommodating portion 62, the portion of the holding member 60 where the accommodating portion 62 is formed is disposed so as to extend from the proximal end side to the distal end side of the extending portion 14. It will be connected with the extension part 14 concerned.

  In addition, as a connection part, the structure in which the engagement hole which can be latched to the extension part 14 was formed, the structure containing the hook which can be hooked on the extension part 14, and a latching structure part in the front-end | tip part of the extension part 14 The shape etc. which can be latched by the said latching structure part are formed.

  A locked portion 64 that can be locked with the locking portion 15 is formed inside the housing portion 62. Here, a locked portion 64 is formed at a position corresponding to the locking portion 15 in the accommodating portion 62, that is, at the center in the width direction of the accommodating portion 62.

  The locked portion 64 is a shape portion that can be disposed in the wide portion 15 b through the introduction portion 15 a of the locking portion 15. Here, the overlapped portion that forms the bag shape of the accommodating portion 62 is joined. It is formed by doing. That is, the accommodating portion 62 is formed by folding a sheet-like member and joining both sides thereof by stitching or the like. At the central portion in the width direction of the accommodating portion 62, the overlapped portions of the sheet-like members are joined to form the locked portion 64. Here, the locked portion 64 is formed in a surrounding shape that gradually widens from the opening of the accommodating portion 62 toward the back side. More specifically, the locked portion 64 includes a semicircular portion 64a that protrudes toward the opening side of the accommodating portion 62, and the both ends of the semicircular portion 64a toward the back side of the accommodating portion 62. The portion 64b is gradually widened, and a linear portion 64c that connects the end portions of the widened portion 64b is formed (see FIG. 3).

  And when accommodating the extension part 14 in the accommodating part 62, by deform | transforming the to-be-latched part 64 so that it may become narrow, the said to-be-latched part 64 passes through the introducing | transducing part 15a, and is a wide part. 15b. When the locked portion 64 is disposed in the wide portion 15b and the accommodating portion 62 is covered with the extending portion 14, the locked portion 64 is stretched so as to be pulled, and the locked portion 64 is expanded. It becomes a state that spreads in. As a result, the locked portion 64 is disposed in the wide portion 15 b and is locked to the edge portion 15 c so that the locked portion 15 is locked to the locked portion 64.

  In addition, with the locking portion 15 locked to the locked portion 64 as described above, the distal end portion of the extending portion 14 is in contact with the back of the housing portion 62. In other words, the interval between the locked portion 64 and the back of the accommodating portion 62 is set to be the same as the dimension between the edge portion 15c of the locking portion 15 and the distal end portion of the extending portion 14 ( (See FIG. 9).

  An example of a method for manufacturing the holding member 60 will be described. FIG. 4 is a development view showing a sheet-like member 70 for manufacturing the holding member 60. In addition, in this figure, the line used as a crease | fold is shown with the dashed-dotted line (same also in each following figure). FIG. 5 is an explanatory view showing a state in which the sheet-like member 70 is folded, and FIG. 6 is an explanatory view showing a state in which the folded sheet-like member 70 is joined by sewing or the like.

  That is, the holding member 60 is configured by joining a foldable and joinable flexible sheet-like member 70 (cloth or resin sheet or the like) by sewing or the like. It is preferable that the joining is performed by stitching. Here, the stitched example will be described, but this is not essential.

  In the sheet-like member 70, a pair of first overlapping portions 72 are connected to both sides of one end portion (upper side in FIG. 4) of the base-shaped portion 71 obtained by spreading the holding member 60 in a plane. At the same time, a second overlapped portion 73 is formed continuously at the other end of the base-shaped portion 71.

  The first overlapping portion 72 is formed in a shape that can be overlapped with respect to the base-shaped portion 71 in a region from the portion where one fixing hole 61 h is formed to one side portion of the accommodating portion 62.

  In addition, the second overlapping portion 73 is formed in a shape that can overlap the base shape portion 71 with the same width as the other side portion with respect to the other side portion of the base shape portion 71.

  Then, as shown in FIG. 5, the pair of first overlapping portions 72 and the second overlapping portion 73 are overlapped with each other so as to be folded with respect to the base shape portion 71. In this state, as shown in FIG. 6, from one side of the second overlapping portion 73 to the other side of the second overlapping portion 73 via the inside of the outer edge of each first overlapping portion 72. The first overlapping portion 72 and the second overlapping portion 73 are joined to the base-shaped portion 71 along the joining line 76 by sewing or the like.

  In this manner, the base-shaped portion 71 and the both side portions of the second overlapping portion 73 are joined together by stitching or the like, so that the storage portion 62 that forms a bag shape with the base-shaped portion 71 and the second overlapping portion 73 is formed. It is formed. Moreover, the to-be-latched part 64 is formed by joining the overlapping part of the base-shaped part 71 and the 2nd overlapping part 73 by stitching etc. in the center part in the width direction.

  In addition, a portion where the fixing hole 61 h is formed in the holding member 60 is reinforced by the first overlapping portion 72, and a portion where the fixing hole 61 h is formed in the holding member 60 and each side portion of the accommodating portion 62 is a base-shaped portion. 71 and the first overlapping portion 72 are connected at the overlapping portion.

  In this way, the holding member 60 is formed.

  The pair of holding members 60 are connected to the pair of extending portions 14 and the fixing member 50 as follows, and hold the airbag 30 and the like between the lid 11 and the fixing member 50.

  That is, the pair of extending portions 14 is accommodated in the accommodating portion 62 of the pair of holding members 60, and one end side portions of the pair of holding members 60 are connected to the pair of extending portions 14. The pair of extending portions 14 are bent in a direction in which the respective distal end portions are brought close to each other. In this state, the fixing member 50 is further provided on a portion of the pair of holding members 60 provided on the surface facing the inflator 22 side (the surface facing the inner side of the lid 11) of the pair of bent extended portions 14. The other end of the pair of holding members 60 is fixed to the fixing member 50 in a state in which the ceiling portion 44 of the packaging member 40 (the packaging member 40 wraps the folded airbag 30) is in contact with the fixing member 50. Connected to Thereby, the folded airbag 30 and the packaging member 40 that wraps the airbag 30 are held between the lid 11 and the inflator 22 and the fixing member 50, so that the airbag 30, the inflator 22, the fixing member 50, and the like are lidded. 11 is assembled. In this state, the airbag 30 and the packaging member 40 that wraps the airbag 30 are urged toward the fixing member 50 and the inflator 22 by the urging force that the pair of extending portions 14 try to return to the original state. Accordingly, the airbag 30 and the packaging member 40 that wraps the airbag 30 are sandwiched between the lid 11, the fixing member 50, and the inflator 22 by the urging force of the pair of extending portions 14, and the stable assembled state can do.

  The folded airbag 30 is preferably disposed in a contracted state between a surface facing the inflator 22 side of the pair of bent extended portions 14 and the inflator 22. For this reason, the airbag 30 and the packaging member 40 that wraps the airbag 30 are sandwiched between the lid 11, the fixing member 50, and the inflator 22 even by the force of the airbag 30 returning to its original size. From this point, a stable assembled state can be obtained.

<Assembly method>
A method example in which the airbag 30 and the inflator 22 and the like are assembled to the lid 11 using the holding member 60 will be described.

  First, as shown in FIG. 10, the lid 11, the airbag 30, the inflator 22, and the holding member 60 are prepared. Then, as shown in FIG. 7, one extending portion 14 is accommodated in the accommodating portion 62 of one holding member 60, and the other extending portion 14 is accommodated in the other holding member 60 as shown in FIG. 8. It is accommodated in the accommodating part 62. At this time, the locked portion 64 is disposed in the locking portion 15 to lock them together. As a result, as shown in FIGS. 9 and 11, the accommodating portions 62 of the pair of holding members 60 are respectively covered with the pair of extending portions 14, and the distal end portions of the pair of extending portions 14 are disposed on the deployment door 12. It will be in the state extended toward the back side. And both the extension parts 14 are bent along the inner surface of the expansion | deployment door 12 so that a mutual front-end | tip part may approach. In addition, the extension part 14 may be bent before or after the extension part 14 is accommodated in the accommodation part 62.

  Separately, the airbag 30 folded in the packaging member 40 is accommodated, and the inflator 22 is temporarily fixed to the airbag 30 and the packaging member 40 via the fixing member 50. Prepare things. This is arrange | positioned inside the expansion | deployment door 12 of the lid 11, as shown in FIGS. Then, as shown in FIG. 12, the extended portion 14 covered with the accommodating portion 62 is disposed along the inner surface of the deployment door 12, and the folded airbag 30 and the packaging member 40 that accommodates the folded airbag 30 are deployed. It arrange | positions between the doors 12. Simultaneously or before and after this, the nut 29 is loosened and removed, the inflator 22 is once removed, the other end portion of the holding member 60 is overlaid on the fixing bracket 28 on the outer peripheral side of the packaging member 40, and the screw portion 25 is attached. Insert through the fixing hole 61h. Then, the flange portion 24 of the inflator 22 is again overlapped with the fixing bracket 28, and the nut 29 is screwed and tightened to the screw portion 25. Thereby, as shown in FIGS. 1 and 13, the airbag 30, the packaging member 40, and the holding member 60 are sandwiched and fixed between the fixing bracket 28 and the collar portion 24. In this manner, the other end portion of the holding member 60 is connected to the inflator 22 using the fixing member 50, and the airbag 30, the inflator 22, and the like are assembled and integrated with the lid 11 using the holding member 60. Is done.

  In the assembled state, the folded airbag 30 is preferably in an inner position avoiding the base end portions of the pair of extending portions 14. This is because the airbag 30 that is inflated and deployed can more reliably push the distal end side of the extending portion 14 and change the posture of the extending portion 14 together with the lid dividing portion 12a.

  In the above example, the operation example in which the operation of connecting the other end portion of the holding member 60 to the fixing member 50 after connecting the one end portion of the holding member 60 to the extending portion 14 has been described. There is no need for such a connection order.

<Operation>
The operation of the airbag device 20 will be described.

  First, in a state before the deployment operation, as shown in FIGS. 1 and 13, the folded airbag 30 is disposed inside the deployment door 12. The extending portion 14 projecting from the deployment door 12 is accommodated in the accommodation portion 62 of the holding member 60, and is disposed between the folded airbag 30 and the deployment door 12.

  In this state, when the gas generated from the inflator 22 is introduced into the airbag 30, the airbag 30 starts to expand inside the deployment door 12 as shown in FIG. 14.

  The packaging member 40 is broken along the breaking line 44a by the inflation and deployment force of the airbag. Further, in the main inflation and deployment direction of the airbag 30 (the direction from the inflator 22 toward the deployment door 12), the inflator 22 is fixed at a certain distance from the deployment door 12 by the inflator fixing member 46. For this reason, the airbag 30 that has started to inflate comes into contact with the inner surface of the deployment door 12 via the accommodating portion 62 and the extension portion 14, and the inflation and deployment force in the protruding direction of the airbag 30 is the tear line of the deployment door 12. Acts as a force to break 11L. Thereby, the expansion door 12 is split open. At this time, the extending portion 14 is pressed against the deployment door 12 by the inflating and deploying force of the airbag 30.

  As shown in FIG. 15, when the deployment door 12 is bent outward at the hinge portion 12 b and opened outward, the extension portion 14 is opened outward together with the deployment door 12. Since the extension portion 14 is provided on the back surface of the deployment door 12, even if the deployment door 12 is separated from the frame portion 11 f, the deployment door 12 is attached to the inflator 22 by the extension portion 14 and the holding member 60. On the other hand, it is maintained in a state of being held so as to be attracted, and scattering of the deployment door 12 is suppressed. When the opening is formed in the lid 11, the airbag 30 tries to inflate and deploy to the outside of the instrument panel 10 through the opening. Then, the ceiling portion 44 of the packaging member 40 broken at the breaking line 44 a is pushed outward through the opening of the lid 11. The peripheral wall 45 of the packaging member 40 surrounds the airbag 30 between the lid 11 and the inflator 22.

  Then, when the airbag 30 protrudes largely outward through the opening of the lid 11, the extending portion 14 is in a posture of standing up toward the outside of the lid 11 (upward in FIG. 15). Since the accommodating part 62 has covered the said extension part 14, the connection state of the holding member 60 and the extension part 14 is maintained more reliably.

  Moreover, the intermediate part located between the extension part 14 and the inflator 22 among the holding members 60 exists in a part of the outer periphery of the airbag 30, and suppresses that the airbag 30 spreads in the radial direction.

<Effects>
According to the airbag device 20 and the holding member 60 configured as described above, the airbag 30 to be inflated and deployed pushes the ceiling portion 44 and the deployment door 12 of the packaging member 40 to break the ceiling portion 44 and deploy. Open the door 12. At this time, since the extending portion 14 is accommodated in the accommodating portion 62 provided in the holding member 60, the fixing portion of the airbag 30 to the inflator 22 and the inflator 22 are separated from the deployment door 12 by the holding member 60. You can keep away. Thereby, the airbag 30 opens the deployment door 12 more reliably and expands and deploys outward.

  In addition, since the other end portion of the holding member 60 is fixed to the fixing member 50 for fixing the inflator 22 to the airbag 30, the deployment door 12 is more reliably prevented from being separated from the inflator 22. Can be retained.

  Further, the assembly work of the inflator 22, the airbag 30, the packaging member 40, and the fixing member 50 with respect to the lid 11 can be performed using the holding member 60 as follows. That is, the pair of extending portions 14 is accommodated in the accommodating portion 62 of the pair of holding members 60 and the one end side portion of the pair of holding members 60 is connected to the pair of extending portions 14. 14 is bent in a direction in which the respective tip portions are brought close to each other. In this state, the ceiling portion 44 of the packaging member 40 fixed to the fixing member 50 is attached to a portion of the pair of holding members 60 provided on the surface of the pair of bent extended portions 14 facing the inflator 22 side. In the state of contact, the other end portions of the pair of holding members 60 are connected to the fixing member 50 side. Thereby, the fixing member 50 is held with respect to the pair of extending portions 14 by the pair of holding members 60, and the inflator 22, the folded airbag 30 and the packaging member 40 are assembled by the fixing member 50. Kept in a state. For this reason, the assembly work of the inflator 22, the airbag 30, etc. with respect to the lid 11 can be performed easily.

  Moreover, since the one end side part of a pair of holding member 60 and a pair of extension part 14 can be connected by accommodating a pair of extension part 14 in the accommodating part 62 of a pair of holding member 60, the said The connecting work can be easily performed, and the assembling work of the airbag 30 and the like from this point can be easily performed.

  Furthermore, since the airbag 30 is disposed in a state of being folded between the inflator 22 and the surface facing the inflator 22 side of the pair of bent extended portions 14, the pair of extended portions 14 is arranged. The airbag 30, the inflator 22, and the fixing member 50 are pushed in a direction away from the lid 11 by the force to return to the original shape, and these are held by the pair of holding members 60 so as to be pushed into the lid 11 side. Become. For this reason, the airbag 30, the inflator 22, and the fixing member 50 are less likely to wobble, and these assembled states can be stabilized.

  Moreover, since the folded airbag 30 is contracted between the bent extended portion 14 and the holding member 60 and the inflator 22, the force of the airbag 30 to return to the original folded form is caused. In addition, the airbag 30, the inflator 22, and the fixing member 50 are pushed away from the lid 11. For this reason, the airbag 30, the inflator 22, and the fixing member 50 are less likely to wobble, and these assembled states can be further stabilized.

  Further, since the holding member 60 is held by the fixing member 50 and the extending portion 14, the above holding state can be realized without using the lid side peripheral wall portion formed on the lid side. Thereby, the holding structure of the inflator 22 and the airbag 30 with respect to the lid 11 can be realized even for the structure in which the lid side peripheral wall portion is not provided as described in the present embodiment. In the structure in which the lid side peripheral wall portion is provided, the lid side peripheral wall portion mainly suppresses the airbag 30 and the inflator 22 from acting on the lid side peripheral wall portion. It can play the role of preventing it from opening in the direction.

  In the above embodiment, the example in which the other end side portion of the holding member 60 is connected to the fixing member 50 using the screw portion 25 of the fixing member 50 has been described. However, the holding member 60 is connected to the fixing member. Configuration examples are not limited to these. For example, a configuration in which the other end portion of the holding member is bent after passing through an insertion hole formed in the fixing member and joined to an intermediate portion thereof by sewing or the like, a metal or the like on the other end portion of the holding member 60 A configuration may be employed in which the hook formed in (1) is attached and the hook is locked to the fixing member.

  Moreover, although the extension part demonstrated in the said embodiment the example which is a flap-shaped plate shape, a rod-shaped protrusion shape etc. may be sufficient. However, since the extending portion 14 is formed in a plate shape, the one end side portion of the holding member 60 can be connected and supported in a relatively wide area, and the inflator 22 and the airbag 30 can be more reliably held. it can.

  In addition, since the bag-shaped accommodation portion 62 is formed on the one end side portion of the holding member 60, the one end side portion and the extension portion of the holding member 60 are accommodated by accommodating the extension portion 14 in the accommodation portion 62. 14 can be easily connected.

  Further, since the locking portion 15 is provided in the extending portion 14 and the locked portion 64 that can be locked with the locking portion 15 is provided inside the housing portion 62, the extending portion 14 is provided in the housing portion 62. , The connection state between the one end side portion of the holding member 60 and the extending portion 14 can be more reliably maintained.

  In addition, since the locking portion 15 and the locked portion 64 are locked in the accommodating portion 62, the locked state between the locking portion 15 and the locked portion 64 is difficult to be released, and the engagement between them is difficult. A stop state can be maintained more reliably.

  Further, since the locking portion 15 and the locked portion 64 are locked with each other with the distal end portion of the extending portion 14 in contact with the back of the housing portion 62, the extending portion 14 is connected to the locked portion 64. By being inserted to the back, the locking portion 15 and the locked portion 64 can be locked easily and reliably.

  Moreover, since the latching | locking part 15 provided in the width direction intermediate part of the extension part 14 is the structure latched to the to-be-latched part 64 of the accommodating part 62, it is an extension part in the width direction of the extension part 14. 14 and the accommodating part 62 can be suppressed, and the connection state between the one end side portion of the holding member 60 and the extending part 14 can be more reliably maintained in a constant state.

  Further, even if a force that shifts the side portion from the extending portion 14 acts on the side portion of the accommodating portion 62, the locked state between the locking portion 15 and the locked portion 64 is maintained. The connection state between the one end side portion of the holding member 60 and the extending portion 14 is more reliably maintained.

  Further, the holding member 60 is constituted by a sheet-like member 70, and the accommodating portion 62 is formed by folding the end portions of the sheet-like member 70 and joining both sides overlapped by the folding by sewing or the like. Therefore, the bag-like accommodation part 62 can be easily formed with fewer joints and the like.

  Moreover, the force at the time of the holding | maintenance member 60 being pulled can be received by making the front-end | tip part of the extension part 14 contact the crease | fold part which turned the sheet-like member 70, and it is a part excellent in intensity | strength. The connection state of the one end side portion of the holding member 60 and the extending portion 14 can be maintained. In addition, it is not essential that the front-end | tip part of the holding member 60 is linear, For example, you may form in the curved shape from which the front-end | tip part of a holding member becomes convex outward. In this case, it is preferable to form the back portion of the housing portion in a shape that matches the shape of the tip portion of the holding member, that is, a shape corresponding to the curved shape.

  In addition, it is not essential to fold the sheet-like member to form the accommodating portion, for example, by stacking another sheet-like member on the end of the sheet-like member, and joining the three surroundings by sewing or the like, You may make it form an accommodating part.

  Moreover, since the to-be-latched part 64 is also formed by joining the overlapping part of the sheet-like member in the accommodating part 62, the to-be-latched part 64 can also be formed easily. In particular, since the locked portion 64 can be formed before and after the joining work when forming the accommodating portion 62, the locked portion 64 can be easily formed from this point.

  Further, the packaging member 40 formed by the sheet-like member surrounds the airbag 30 folded before the airbag 30 is inflated, and is broken by the inflation of the airbag 30 to further inflate the airbag 30. Since the airbag 30 can be deployed, the packaging member 40 can more reliably maintain the folded state of the airbag 30 when the airbag 30 is assembled into the lid 11. Thereby, the assembly operation | work of the airbag 30 with respect to the lid 11 can be performed easily.

{Modifications}
Various modifications will be described based on the above embodiment.

  A 1st modification is a modification regarding an extending part and a holding member. FIG. 16 is an explanatory view showing the extension part 114 and the holding member 160 according to the first modification, FIG. 17 is a plan view showing the extension part 114 according to the first modification, and FIG. 18 is the first modification. It is a top view which shows the state which accommodated the extension part 114 in the accommodating part 162 of the holding member 160 which concerns on an example.

  In the first modified example, a pair of locking portions 115 are provided on both sides of the extending portion 114 corresponding to the extending portion 14. The pair of locking portions 115 are formed by forming square-shaped dents in the base end side portions on both sides of the extension portion 114. Therefore, the pair of locking portions 115 has a locking edge 115 a facing the proximal end side of the extending portion 114.

  In addition, the holding member 160 corresponding to the holding member 60 includes a storage portion 162 corresponding to the storage portion 62. A pair of locked portions 164 are provided on both side portions of the accommodating portion 162 corresponding to the pair of locking portions 115.

  Here, on both sides on the opening side of the accommodating portion 162, the portions where the sheet-like members are overlapped are joined together by stitching or the like along an L-shaped line that protrudes inward. A stop 164 is formed. Thereby, the opening part of the accommodating part 162 is narrower than the back | inner side. Here, both end portions of the joining line forming the locked portion 164 reach the edge of the holding member 160, but this is not essential.

  In the first modified example, when the extending portion 114 is accommodated in the accommodating portion 162, the pair of locked portions 164 on both sides of the opening of the accommodating portion 162 is paired with the pair of engaging portions on both the proximal end sides of the extending portion 114. The pair of to-be-latched portions 164 are disposed in the retaining portions 115 and are locked to the retaining edges 115 a of the pair of retaining portions 115. Thereby, it can maintain so that the extension part 114 may not come out from the accommodating part 162 more reliably.

  Moreover, the said structure forms the latching | locking part 115 by forming the recessed part dented toward the center side in the both sides of the extension part 114, and the structure which makes the latching | locking part 115 latch the to-be-latched part 164 Therefore, unlike the configuration in which the locked portion 64 is inserted into the locking portion 15 from the distal end side of the extending portion 14 as in the locking portion 15 and the locked portion 64, It is the structure which does not need to form a recessed part in a front-end edge part. For this reason, regardless of the presence or absence of the locking portion 115 and the locked portion 164, a larger portion of the distal end portion of the extending portion 114 can be brought into contact with the back of the housing portion 162. Thereby, the tensile force of the holding member 160 can be more reliably received by the accommodating portion 162.

  As a result, the holding structure 160 is more reliably pulled by the holding portion 162 while maintaining the state in which the extending portion 114 is held in the receiving portion 162 by the locking structure of the locking portion 115 and the locked portion 164. The connection state of the one end side part of the holding member 160 and the accommodating part 162 can be maintained more reliably.

  In addition, as described above, a larger portion of the distal end portion of the extending portion 114 can be brought into contact with the back of the accommodating portion 162, so that reinforcement or the like for the accommodating portion 162 is omitted or simplified. There is also an advantage that it is possible to do.

  In this modification, the locking portion 15 and the locked portion 64 are provided at the center in the width direction of the extending portion 114 and the accommodating portion 162, but these may be omitted. Thereby, almost the entire tip of the extension part can be brought into contact with the back side of the housing part, and the tensile force of the holding member can be more reliably received by the housing part.

  A 2nd modification is a modification regarding a holding member on the premise of the 1st modification. FIG. 19 is a development view showing the sheet-like member 270 for forming the holding member 260 according to the second modification, FIG. 20 is an explanatory view showing a state in which the sheet-like member 270 is folded, and FIG. 5 is a plan view showing a member 260. FIG.

  The sheet-like member 270 includes a first region portion 270a having the same shape as the holding member 260 in the completed form, and a second region portion connected to one end portion (the end portion on the side connected to the inflator) of the first region portion 270a. 270b and a third region portion 270c connected to the other end of the first region portion 270a (the end on the side connected to the extending portion), and these are constituted by a single sheet. .

  The second region portion 270b is formed in a shape that can overlap the region from one end of the first region portion 270a to the middle of the accommodation portion 262 of the other end of the first region portion 270a.

  The third region portion 270 c is formed in a shape that extends in a region longer than a region corresponding to the accommodating portion 262.

  Then, as shown in FIG. 20, the second region portion 270b is folded so as to overlap the one end side portion of the first region portion 270a and the intermediate portion between the one end side and the other end side. In this state, the distal end portion of the second region portion 270b reaches the opening side portion of the portion where the accommodating portion 262 is formed.

  Further, the third region portion 270c is folded so as to overlap with one end side portion of the first region portion 270a, and the front end portion thereof is folded so as to overlap double on the opening side of the portion forming the accommodating portion 262.

  Then, as shown in FIG. 21, the first region portion 270a and the second region portion 270b are joined along the stitching line along the outer periphery of the first region portion 270a, and the first region portion 270a and The third region portion 270c is joined. When the both side portions of the first region portion 270a and the third region portion 270c are joined, as described in the first modified example, the locked portion 264 corresponding to the locked portion 164 is formed. Are joined along an L-shaped line. Thereby, the accommodating part 262 and the to-be-latched part 264 are formed. The locked portion 264 is formed by joining the width direction central portions of the first region portion 270a and the third region portion 270c by stitching or the like.

  Thereby, each part of the holding member 260, in particular, the other end side portion connected to the inflator of the holding member 260 and the opening side portion of the accommodating portion 262 can be made into a double structure, and the holding member 260 is made robust. be able to.

  The third modification is an example in which a standing wall is provided on the lid. 22 is an explanatory view showing an airbag device 320 according to a third modification, and FIG. 23 is an explanatory view showing a positional relationship among the airbag 30, the holding member 60, and the standing wall 324 along the line XXIII-XXIII in FIG. is there.

  In this modified example, a standing wall 324 extends on the lid 311 corresponding to the lid 11 so as to cover at least a part of the outer periphery of the folded airbag 30 where the holding member 60 is not disposed. Yes.

  In this example, when the folded airbag 30 is viewed from the deployment door 12 side, the holding member 60 is provided so as to cover both side portions on the long side of the folded airbag 30. Further, the standing wall 324 extends so as to cover both side portions on the short side of the folded airbag 30.

  The standing wall 324 is formed in a plate shape. Even after the deployment door 12 is opened, the base end portion of the standing wall 324 is preferably provided on the outer peripheral side of the deployment door 12 so that the standing wall 324 can maintain the state of covering the periphery of the airbag 30. However, the standing wall 324 may be erected on the lid itself.

  The standing wall 324 is preferably set to a width that covers the entire width direction on the short side of the folded airbag 30 so as to cover as many portions of the outer periphery of the airbag 30 as possible. Further, the protruding dimension of the standing wall 324 is preferably set to a size from the lid 311 to the inflator 22 or from the lid 311 to the inflator 22. Here, the size from the lid 311 to the inflator 22 is set. Is set to

  According to this modification, the standing wall 324 can more reliably suppress the airbag 30 from being inflated and deployed in the radial direction between the lid 311 and the inflator 22.

  In addition, the airbag 30 is inflated and deployed in the radial direction between the lid 311 and the inflator 22. A relatively lightweight holding member 60 formed of a sheet-like member, and a partially provided standing wall 324. Therefore, the expansion and deployment of the airbag 30 in the radial direction can be suppressed by a lightweight configuration.

  In the fourth modification, an example in which the position of the extending portion with respect to the deployment door is changed will be described. FIG. 24 is an explanatory view showing an airbag device 420 according to a fourth modification, and FIG. 25 is an explanatory view showing a state where the airbag 30 of the airbag device 420 is inflated and deployed.

  That is, in the above modification, the base end portion of the extending portion 14 is a portion along the base end side line (where the hinge portion 12b is formed) of the deployment door 12, and the base end side line (thin wall portion). 412b) is provided on the outer peripheral side.

  When the airbag 30 of the airbag device 420 is inflated, the deployment door 12 is split open, and the deployment door 12 is opened outward, the extension portion 414 is bent at the base end portion thereof and faces outward. Change the posture as follows.

  In the above-described embodiment and each modification, the other end side portion of the holding member has been described as being directly connected to the fixing member. However, the other end side portion of the holding member is a portion on the fixing member side, i.e., the fixing member. You may be connected with the other part fixed integrally.

  The fifth modification shows an example in which the other end portion of the holding member is connected to the airbag device fixing component.

  FIG. 26 shows a state before the airbag device 520 according to the fifth modification is assembled inside the deployment door 12, and FIGS. 27 and 28 show a state in the middle of assembling the airbag device 520 inside the deployment door 12. FIG. 29 shows an initial state in which the airbag device 520 is incorporated inside the deployment door 12.

  That is, in the airbag device 520 of the fifth modified example, the inflator fixing member 546 is fixed to the outer peripheral collar portion 24 of the inflator 22. Similar to the inflator fixing member 46, the inflator fixing member 546 is a member formed of a metal plate or the like, and extends from the collar portion 24 toward the inside of the deployment door 12 and has a distal end bent into an L shape. It is formed in the shape. An airbag device fixing component 580 is provided inside the deployment door 12. The airbag device fixing component 580 is a member formed of a metal plate or the like, and is fixed to a lean hose or the like which is a vehicle body side member inside the deployment door 12 and is located inside the deployment door 12 and inflator. 22 extends toward the position on the back side. Bolt insertion holes are formed in the distal end portion of the inflator fixing member 546 and the distal end portion of the airbag device fixing component 580. Then, in a state where the tip portion of the inflator fixing member 546 and the tip portion of the airbag device fixing component 580 are overlapped, the bolt B is inserted into the bolt insertion hole, and the nut N is fastened to the bolt B. Thus, the inflator fixing member 546 and the airbag device fixing component 580 are connected and fixed, whereby the airbag device 520 is fixed to the airbag device fixing component 580. The nut N may be fixed to the inflator fixing member 546 in advance, or may not be fixed.

  In the airbag device 520, the following holding members 560A and 560B are used in place of the holding member 60 in the above embodiment.

  That is, the other end side portions of the holding members 560A and 560B are configured to be connectable to the airbag device fixing component 580, and the one end side portions of the holding members 560A and 560B are connectable to the extending portion 14. Yes.

  More specifically, bolt insertion holes 562Ah and 562Bh into which the bolt B can be inserted are formed in the other end portions of the holding members 560A and 560B (see FIG. 26). Moreover, the one end side part of holding member 560A, 560B is comprised by the extension part 14 by the structure similar to the said embodiment.

  Here, holding member 560A passes through a position near inflator 22 in the tip portion of inflator fixing member 546 and is superimposed on the tip portion of inflator fixing member 546, and holding member 560B is the tip portion of inflator fixing member 546. Among them, the length dimension of the holding member 560A is set larger than the length dimension of the holding member 560B because it is stacked on the tip of the inflator fixing member 546 through a position farther from the inflator 22.

  Then, as shown in FIG. 27, one end side portions of the holding members 560A and 560B are connected to the extending portion 14, and thereafter, the other end portions of the holding members 560A and 560B are fixed to the inflator as shown in FIG. The member 546 is overlapped on the outer surface side of the tip portion. Then, as shown in FIG. 29, the other end portion of the inflator fixing member 546 is overlapped with the distal end portion of the airbag device fixing component 580, and the other end portions of the holding members 560A and 560B are sandwiched therebetween. . In this state, the bolt B is inserted through the bolt insertion holes of the inflator fixing member 546, the airbag device fixing component 580, and the holding members 560A and 560B, and the nut N is screwed and fastened to the tip of the bolt B. As a result, the other end portions of the holding members 560A and 560B are connected to the airbag device fixing component 580.

  The airbag device 520 and the holding members 560A and 560B according to this modification can also suppress the deployment door 12 from being separated from the inflator 22 when the airbag 30 is inflated and deployed.

  That is, when the gas generated from the inflator 22 is introduced into the airbag 30, the airbag 30 starts to expand inside the deployment door 12, as shown in FIG. The airbag 30 abuts against the inner surface of the deployment door 12 via the extending portion 14 and the like, and the inflating and deploying force in the protruding direction of the airbag 30 acts as a force for dividing the tear line 11L of the deploying door 12. Thereby, the expansion door 12 is split open. At this time, the extending portion 14 is pressed against the deployment door 12 by the inflating and deploying force of the airbag 30.

  As shown in FIG. 31, when the deployment door 12 is split open, the airbag 30 tries to inflate and deploy outward through the opening of the deployment door 12 trace. At this time, the airbag 30 pushes the extending portion 14 outward through the opening of the deployment door 12 trace.

  In this way, when the airbag 30 to be inflated and deployed pushes the deployment door 12 and jumps outward from the split door, the holding members 560A and 560B are connected to the extending portion 14 and the airbag device fixing component 580. So that the deployment door 12 is not separated from the inflator 22. Thereby, the airbag 30 opens the deployment door 12 more reliably and expands and deploys outward.

  Further, since the holding members 560A and 560B can be connected and fixed to the airbag device fixing component 580 when the airbag device 520 is fixed to the airbag device fixing component 580, the connecting and fixing operation of the holding members 560A and 560B is possible. Can be easily performed.

  In addition, each structure demonstrated in the said embodiment and each modification can be suitably combined unless it mutually contradicts.

  As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Instrument panel 10a Instrument panel main body 10h Opening 11, 311, 411 Lid 12 Deployment door 14, 114, 414 Extension part 15 Locking part 20, 320, 420, 520 Airbag device 22 Inflator 24 Collar part 25 Screw part 28 Fixing bracket 29 Nut 30 Air bag 40 Packaging member 44a Breaking line 50 Fixing member 60, 160, 260, 560A, 560B Holding member 61 Inflator disposition recessed part 61h Fixing hole 62, 162, 262 Housing part 64 Locked part 70 Sheet -Like member 115 locking portion 164 locked portion 264 locked portion 270 sheet-like member 324 standing wall 546 inflator fixing member 580 airbag device fixing component

Claims (11)

A pair of deployment doors and a pair of base end portions that are integrally provided in a portion along the base end portion of the deployment door and each distal end portion extends in a direction protruding from the back surface of the deployment door. A lid including an extension part;
An inflator disposed on the back side of the pair of deployment doors and capable of generating gas;
The pair of extending portions are bent in a state in which the respective leading end portions are brought close to each other, and are folded between the inflator and the surface facing the inflator side of the pair of extending portions. An airbag that is installed and expandable by gas supplied from the inflator; and
A flexible sheet-like member that surrounds an outer periphery of the airbag in a folded state; a ceiling that covers a portion on the lid side of the airbag in a folded state; and the ceiling A packaging member that is formed into a bag shape that includes a bottom portion that is opposed to the folded airbag and is expanded from a breakable portion provided in the ceiling portion;
A fixing member that fixes the inflator, the airbag, and the bottom of the packaging member in a state in which gas generated in the inflator can be supplied into the airbag;
A pair of holding members whose one end side portion is connected to the extension portion and whose other end side portion is connected to the fixing member side;
With
A connecting portion connectable to the extending portion is provided on the one end side portion of the holding member,
In the state where the pair of extending portions is connected to the connecting portion of the pair of holding members and the one end side portion of the pair of holding members is connected to the pair of extending portions, the pair of extending portions is Each tip is bent in a direction to bring them closer together,
In this state, among the pair of holding members, the ceiling portion of the packaging member fixed to the fixing member at a portion provided on the surface side facing the inflator side of the pair of bent extended portions. In the state which contact | abutted, the other end side part of a pair of said holding member is connected with the said fixing member side, The airbag apparatus. The airbag device according to claim 1,
The connecting portion of the holding member is an airbag device that is a bag-like accommodation portion that opens toward the other end side of the holding member and can accommodate the extension portion through the opening. The airbag device according to claim 2,
An airbag device in which a locking portion is provided in the extending portion, and a locked portion that can be locked with the locking portion is provided inside the housing portion. The airbag device according to claim 3,
The airbag device, wherein the locking portion and the locked portion are provided at positions where the locking portion and the locking portion are locked with each other in a state in which a distal end portion of the extending portion is in contact with the back of the housing portion. The airbag device according to claim 3 or 4, wherein
The extending portion is formed in a plate shape that can be disposed along the back surface of the deployment door in a bent state,
A pair of the locking portions are provided on both sides of the extending portion, and the pair of the locked portions are provided at positions corresponding to the pair of the locking portions in the housing portion. . The airbag device according to any one of claims 3 to 5, wherein
The extending portion is formed in a plate shape that can be disposed along the back surface of the deployment door in a bent state,
The airbag device, wherein the locking portion is provided at an intermediate portion in the width direction of the extending portion, and the locked portion is provided at a position corresponding to the locking portion in the housing portion. The airbag device according to any one of claims 3 to 6,
The holding member is formed of a flexible sheet-like member, and the locked portion is formed by joining overlapping portions of the sheet-like member in the housing portion. . The airbag device according to any one of claims 2 to 7,
The said holding member is comprised by the flexible sheet-like member, The said accommodating part is an airbag apparatus formed by folding up the edge part of the said sheet-like member, and joining the both sides. It is an airbag apparatus as described in any one of Claims 1-8,
The airbag device is disposed in a contracted state between a surface facing the inflator side of the pair of bent extended portions and the inflator. The airbag device according to any one of claims 1 to 9,
An airbag device, wherein a base end portion of the extension portion is provided on the deployment door. The airbag device according to any one of claims 1 to 10,
An airbag device in which a standing wall extends on the back side of the lid so as to cover at least a part of the outer periphery of the folded airbag where the holding member is not disposed.

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