JP4536644B2

JP4536644B2 - Airbag device

Info

Publication number: JP4536644B2
Application number: JP2005331284A
Authority: JP
Inventors: 健甲斐
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2005-11-16
Filing date: 2005-11-16
Publication date: 2010-09-01
Anticipated expiration: 2025-11-16
Also published as: JP2007137160A

Description

本発明は、車両の座席の座部に設けられ、車両衝突時に上方に膨張して乗員の腰の前方移動を規制するエアバッグ装置に関する。 The present invention relates to an airbag device that is provided in a seat portion of a vehicle seat and inflates upward at the time of a vehicle collision to restrict forward movement of an occupant's waist.

車両の座席の座部に設けられ、車両衝突時に上方に膨張して乗員の腰の前方移動を規制するエアバッグ装置に関するものとして、座部を支持する板状のフレームに一体的に凹部を形成しこの凹部とでチャンバを形成するように金属薄板からなる膨脹部を設け、車両衝突時にはチャンバ内に設けられたインフレータでガスを発生させて金属製の膨脹部を膨張させて座部を上側に膨出させるものがある（特許文献１参照）。
特表２００３−５１７９６６号公報 As an airbag device that is installed in the seat of a vehicle seat and that inflates upward in a vehicle collision and restricts the forward movement of the occupant's waist, a concave portion is integrally formed in a plate-like frame that supports the seat An inflatable portion made of a thin metal plate is provided so as to form a chamber with this recess, and in the event of a vehicle collision, gas is generated by an inflator provided in the chamber to inflate the metallic inflatable portion so that the seat portion faces upward. There is what bulges (see Patent Document 1).
Special table 2003-517966 gazette

ところで、上記のような金属あるいは樹脂等の可塑性材料から形成される膨脹部は、特に隅部を有する形状とした場合に、膨張時を含む負荷がかかる状況下で隅部近傍に不確定にズレを生じる可能性があり、膨張形状の安定の面で不利となる可能性がある。 By the way, the expanded portion formed of a plastic material such as metal or resin as described above is uncertainly displaced near the corner under a situation where a load including the time of expansion is applied, particularly when the shape has a corner. May be disadvantageous in terms of the stability of the expanded shape.

したがって、本発明は、可塑性材料から形成される膨脹部を安定した膨張形状で膨張させることができるエアバッグ装置の提供を目的とする。 Accordingly, an object of the present invention is to provide an airbag device that can inflate an inflatable portion formed of a plastic material in a stable inflated shape.

上記目的を達成するために、請求項１に係る発明は、車両の座席（例えば実施形態における座席１２）の座部（例えば実施形態におけるシートクッション１５）に設けられ、車両衝突時に上方に膨張する可塑性材料から形成される膨脹部（例えば実施形態におけるエアバッグ本体３０）を有するエアバッグ装置（例えば実施形態におけるエアバッグモジュール１１）であって、前記膨脹部は、筒状であって開口方向から見て複数の隅部（例えば実施形態における第１湾曲板部３６，第３湾曲板部３８，第４湾曲板部４０，第６湾曲板部４２）を有する形状をなすメインパネル（例えば実施形態におけるメインパネル２６）と、該メインパネルに両側開口部（例えば実施形態における開口部２８）を覆うように接合される、複数の隅部（例えば実施形態における隅部６３〜６６）を有する形状のサイドパネル（例えば実施形態におけるサイドパネル２９）とから構成され、該サイドパネルの前記隅部に開口（例えば実施形態におけるスロット穴７０〜７３，８２〜８５、スリット８６〜８９）が形成されており、前記メインパネルは、底板部（例えば実施形態における底板部３５）と、該底板部の一方から折り返すように円弧状に延出する第１湾曲板部（例えば実施形態における第１湾曲板部３６）と、該第１湾曲板部の前記底板部とは反対側から折り返すように円弧状に延出する第２湾曲板部（例えば実施形態における第２湾曲板部３７）と、該第２湾曲板部の前記第１湾曲板部とは反対側から折り返すように円弧状に延出する第３湾曲板部（例えば実施形態における第３湾曲板部３８）と、該第３湾曲板部の前記第２湾曲板部とは反対側からその延長線上に延出する上板部（例えば実施形態における第１上板部３９，第２上板部４３）と、前記底板部の他方から前記第１湾曲板部と同じ側において折り返すように円弧状に延出する第４湾曲板部（例えば実施形態における第４湾曲板部４０）と、該第４湾曲板部の前記底板部とは反対側から折り返すように円弧状に延出する第５湾曲板部（例えば実施形態における第５湾曲板部４１）と、該第５湾曲板部の前記第４湾曲板部とは反対側から折り返すように円弧状に延出して前記上板部に繋がる第６湾曲板部（例えば実施形態における第６湾曲板部４２）とを有する形状に予め成形され、前記サイドパネルは、筒状の壁部（例えば実施形態における壁部５１）の一側が底部（例えば実施形態における底部５２）とされたトレイ状であって、前記壁部が、第１平壁板部（例えば実施形態における第１平壁板部５４）と、該第１平壁板部の一方から円弧状に折り返す第１湾曲壁板部（例えば実施形態における第１湾曲壁板部５５）と、該第１湾曲壁板部の前記第１平壁板部とは反対側から円弧状に折り返す第２湾曲壁板部（例えば実施形態における第２湾曲壁板部５６）と、該第２湾曲壁板部の前記第１湾曲壁板部とは反対側から円弧状に折り返す第３湾曲壁板部（例えば実施形態における第３湾曲壁板部５７）と、該第３湾曲壁板部の前記第２湾曲壁板部とは反対側からその延長線上に延出する第２平壁板部（例えば実施形態における第２平壁板部５８）と、前記第１平壁板部の他方から前記第１湾曲壁板部と同じ側において円弧状に折り返す第４湾曲壁板部（例えば実施形態における第４湾曲壁板部５９）と、該第４湾曲壁板部の前記第１平壁板部とは反対側から円弧状に折り返す第５湾曲壁板部（例えば実施形態における第５湾曲壁板部６０）と、該第５湾曲壁板部の前記第４湾曲壁板部とは反対側から円弧状に折り返して前記第２平壁板部に繋がる第６湾曲壁板部（例えば実施形態における第６湾曲壁板部６１）とを有する形状に予め成形され、一対の前記サイドパネルが、前記メインパネルの両側開口部に前記底部が挿入先端側となるようにして嵌合され、前記底板部に前記第１平壁板部が、前記第１湾曲板部に前記第１湾曲壁板部が、前記第２湾曲板部に前記第２湾曲壁板部が、前記第３湾曲板部に前記第３湾曲壁板部が、前記上板部に前記第２平壁板部が、前記第４湾曲板部に前記第４湾曲壁板部が、前記第５湾曲板部に前記第５湾曲壁板部が、前記第６湾曲板部に前記第６湾曲壁板部が、それぞれ隙間なく接合させられることで、前記膨脹部が形成され、該膨脹部が、前記上板部と、前記底板部とを近接させる方向に全体が折り畳まれるように押圧されて塑性変形させられてなることを特徴としている。 In order to achieve the above object, the invention according to claim 1 is provided in a seat portion (for example, the seat cushion 15 in the embodiment) of a vehicle seat (for example, the seat 12 in the embodiment), and expands upward in the event of a vehicle collision. An airbag device (for example, the airbag module 11 in the embodiment) having an expansion portion (for example, the airbag main body 30 in the embodiment) formed of a plastic material, and the expansion portion is cylindrical and has an opening direction. A main panel (for example, the embodiment) having a shape having a plurality of corner portions (for example, the first curved plate portion 36, the third curved plate portion 38, the fourth curved plate portion 40, and the sixth curved plate portion 42 in the embodiment). A main panel 26) and a plurality of corners (for example, joined to the main panel so as to cover both side openings (for example, the opening 28 in the embodiment)). The side panel (for example, the side panel 29 in the embodiment) having a shape having the corners 63 to 66 in the embodiment, and an opening (for example, the slot holes 70 to 73, 82 in the embodiment) in the corner of the side panel. -85, slits 86-89), and the main panel has a bottom plate portion (for example, the bottom plate portion 35 in the embodiment) and a first curve extending in an arc shape so as to be folded back from one of the bottom plate portions. A plate portion (for example, the first curved plate portion 36 in the embodiment) and a second curved plate portion (for example, in the embodiment) extending in an arc shape so as to be folded back from the side opposite to the bottom plate portion of the first curved plate portion. A second curved plate portion 37) and a third curved plate portion that extends in an arc shape so as to be folded back from the opposite side of the second curved plate portion to the first curved plate portion (for example, the third curved plate in the embodiment). Part 8) and an upper plate portion (for example, the first upper plate portion 39 and the second upper plate portion 43 in the embodiment) extending on the extension line from the opposite side of the third curved plate portion to the second curved plate portion. ), A fourth curved plate portion (for example, the fourth curved plate portion 40 in the embodiment) extending from the other of the bottom plate portions so as to be folded back on the same side as the first curved plate portion, and the fourth A fifth curved plate portion (for example, the fifth curved plate portion 41 in the embodiment) that extends in an arc shape so as to be folded back from the side opposite to the bottom plate portion of the curved plate portion, and the fourth curved plate portion. Pre-shaped into a shape having a sixth curved plate portion (for example, the sixth curved plate portion 42 in the embodiment) extending in an arc shape so as to be folded back from the opposite side to the curved plate portion and connected to the upper plate portion, As for a side panel, one side of a cylindrical wall part (for example, wall part 51 in embodiment) is a bottom part ( For example, the bottom portion 52) in the embodiment has a tray shape, and the wall portion includes a first flat wall plate portion (for example, the first flat wall plate portion 54 in the embodiment) and the first flat wall plate portion. A first curved wall plate portion (for example, the first curved wall plate portion 55 in the embodiment) that folds in an arc shape from one side and an arc shape from the opposite side of the first flat wall plate portion of the first curved wall plate portion. A second curved wall plate portion that is folded back (for example, the second curved wall plate portion 56 in the embodiment), and a third curved wall that is folded back in an arc from the opposite side of the second curved wall plate portion to the first curved wall plate portion. A plate portion (for example, the third curved wall plate portion 57 in the embodiment) and a second flat wall plate portion extending on the extension line from the opposite side of the third curved wall plate portion to the second curved wall plate portion. (For example, the second flat wall plate portion 58 in the embodiment) and the same side as the first curved wall plate portion from the other of the first flat wall plate portion And the fourth curved wall plate portion (for example, the fourth curved wall plate portion 59 in the embodiment) and the fourth curved wall plate portion in an arc shape from the opposite side of the first flat wall plate portion. The second curved wall plate portion to be folded (for example, the fifth curved wall plate portion 60 in the embodiment) and the second curved wall plate portion are folded in an arc shape from the side opposite to the fourth curved wall plate portion. Pre-shaped into a shape having a sixth curved wall plate portion (for example, the sixth curved wall plate portion 61 in the embodiment) connected to the flat wall plate portion, and a pair of the side panels are formed in the both side openings of the main panel. The bottom portion is fitted with the insertion tip side, the first flat wall plate portion on the bottom plate portion, the first curved wall plate portion on the first curved plate portion, and the second curved plate portion on the second curved plate portion. The second curved wall plate portion is disposed on the third curved plate portion, the third curved wall plate portion is disposed on the upper plate portion, and the second curved wall plate portion is disposed on the upper plate portion. The fourth curved wall plate portion, the fourth curved wall plate portion on the fourth curved plate portion, the fifth curved wall plate portion on the fifth curved plate portion, and the sixth curved wall plate on the sixth curved plate portion. parts are by respectively brought into joining without a gap, the bulging 脹 portion is formed, bulging 脹 portion, said upper plate portion, are pressed as a whole in a direction to close the said bottom plate portion is folded It is characterized by being plastically deformed.

請求項２に係る発明は、可塑性材料から形成され、筒状であって開口方向から見て複数の隅部（例えば実施形態における第１湾曲板部３６，第３湾曲板部３８，第４湾曲板部４０，第６湾曲板部４２）を有する形状をなすメインパネル（例えば実施形態におけるメインパネル２６）と、該メインパネルに両側開口部（例えば実施形態における開口部２８）を覆うように接合される、複数の隅部（例えば実施形態における隅部６３〜６６）を有する形状のサイドパネル（例えば実施形態におけるサイドパネル２９）とから構成される膨脹部（例えば実施形態におけるエアバッグ本体３０）を有するエアバッグ装置（例えば実施形態におけるエアバッグモジュール１１）であって、前記膨脹部は、折り畳まれた状態で車両の座席（例えば実施形態における座席１２）の座部（例えば実施形態におけるシートクッション１５）に設けられるとともに、車両衝突時に前記サイドパネルを伸長させながら上方に膨張し、且つ膨張完了状態においても前記サイドパネルの中間部に屈曲部（例えば実施形態における屈曲部９１）を保持するものであり、前記メインパネルは、底板部（例えば実施形態における底板部３５）と、該底板部の一方から折り返すように円弧状に延出する第１湾曲板部（例えば実施形態における第１湾曲板部３６）と、該第１湾曲板部の前記底板部とは反対側から折り返すように円弧状に延出する第２湾曲板部（例えば実施形態における第２湾曲板部３７）と、該第２湾曲板部の前記第１湾曲板部とは反対側から折り返すように円弧状に延出する第３湾曲板部（例えば実施形態における第３湾曲板部３８）と、該第３湾曲板部の前記第２湾曲板部とは反対側からその延長線上に延出する上板部（例えば実施形態における第１上板部３９，第２上板部４３）と、前記底板部の他方から前記第１湾曲板部と同じ側において折り返すように円弧状に延出する第４湾曲板部（例えば実施形態における第４湾曲板部４０）と、該第４湾曲板部の前記底板部とは反対側から折り返すように円弧状に延出する第５湾曲板部（例えば実施形態における第５湾曲板部４１）と、該第５湾曲板部の前記第４湾曲板部とは反対側から折り返すように円弧状に延出して前記上板部に繋がる第６湾曲板部（例えば実施形態における第６湾曲板部４２）とを有する形状に予め成形され、前記サイドパネルは、筒状の壁部（例えば実施形態における壁部５１）の一側が底部（例えば実施形態における底部５２）とされたトレイ状であって、前記壁部が、第１平壁板部（例えば実施形態における第１平壁板部５４）と、該第１平壁板部の一方から円弧状に折り返す第１湾曲壁板部（例えば実施形態における第１湾曲壁板部５５）と、該第１湾曲壁板部の前記第１平壁板部とは反対側から円弧状に折り返す第２湾曲壁板部（例えば実施形態における第２湾曲壁板部５６）と、該第２湾曲壁板部の前記第１湾曲壁板部とは反対側から円弧状に折り返す第３湾曲壁板部（例えば実施形態における第３湾曲壁板部５７）と、該第３湾曲壁板部の前記第２湾曲壁板部とは反対側からその延長線上に延出する第２平壁板部（例えば実施形態における第２平壁板部５８）と、前記第１平壁板部の他方から前記第１湾曲壁板部と同じ側において円弧状に折り返す第４湾曲壁板部（例えば実施形態における第４湾曲壁板部５９）と、該第４湾曲壁板部の前記第１平壁板部とは反対側から円弧状に折り返す第５湾曲壁板部（例えば実施形態における第５湾曲壁板部６０）と、該第５湾曲壁板部の前記第４湾曲壁板部とは反対側から円弧状に折り返して前記第２平壁板部に繋がる第６湾曲壁板部（例えば実施形態における第６湾曲壁板部６１）とを有する形状に予め成形され、一対の前記サイドパネルが、前記メインパネルの両側開口部に前記底部が挿入先端側となるようにして嵌合され、前記底板部に前記第１平壁板部が、前記第１湾曲板部に前記第１湾曲壁板部が、前記第２湾曲板部に前記第２湾曲壁板部が、前記第３湾曲板部に前記第３湾曲壁板部が、前記上板部に前記第２平壁板部が、前記第４湾曲板部に前記第４湾曲壁板部が、前記第５湾曲板部に前記第５湾曲壁板部が、前記第６湾曲板部に前記第６湾曲壁板部が、それぞれ隙間なく接合させられることで、前記膨脹部が形成され、該膨脹部が、前記上板部と、前記底板部とを近接させる方向に全体が折り畳まれるように押圧されて塑性変形させられてなることを特徴としている。 The invention according to claim 2 is formed of a plastic material, is cylindrical, and has a plurality of corner portions (for example, the first curved plate portion 36, the third curved plate portion 38, and the fourth curved shape in the embodiment). A main panel (for example, the main panel 26 in the embodiment) having a shape having the plate portion 40 and the sixth curved plate portion 42) and the main panel are joined so as to cover both side openings (for example, the opening portion 28 in the embodiment). An inflatable portion (for example, the airbag body 30 in the embodiment) composed of a side panel (for example, the side panel 29 in the embodiment) having a plurality of corner portions (for example, the corner portions 63 to 66 in the embodiment). An airbag device (for example, the airbag module 11 in the embodiment), in which the inflatable portion is folded in a vehicle seat (for example, the embodiment). The seat 12 is provided in a seat (for example, the seat cushion 15 in the embodiment), expands upward while extending the side panel at the time of a vehicle collision, and bends to an intermediate portion of the side panel even when the expansion is completed. The main panel extends in an arc shape so as to be folded back from one of the bottom plate portion (for example, the bottom plate portion 35 in the embodiment) and the bottom plate portion. A first curved plate portion (for example, the first curved plate portion 36 in the embodiment) and a second curved plate portion that extends in an arc shape so as to be folded back from the side opposite to the bottom plate portion of the first curved plate portion (for example, The second curved plate portion 37) in the embodiment, and a third curved plate portion (for example, implementation) that extends in an arc shape so as to be folded back from the opposite side of the second curved plate portion to the first curved plate portion. The third curved plate portion 38) in the state and an upper plate portion (for example, the first upper plate portion 39 in the embodiment) extending from the opposite side of the third curved plate portion to the second curved plate portion. , Second upper plate portion 43) and a fourth curved plate portion (for example, the fourth curved plate portion in the embodiment) extending in an arc shape so as to be folded from the other side of the bottom plate portion on the same side as the first curved plate portion. 40), a fifth curved plate portion (for example, the fifth curved plate portion 41 in the embodiment) extending in an arc shape so as to be folded back from the side opposite to the bottom plate portion of the fourth curved plate portion, and the fifth A sixth curved plate portion (for example, the sixth curved plate portion 42 in the embodiment) that extends in an arc shape so as to be folded back from the side opposite to the fourth curved plate portion of the curved plate portion and is connected to the upper plate portion. Pre-shaped into a shape, the side panel has a cylindrical wall (for example, in the embodiment) The wall portion 51 is in a tray shape with one side being a bottom portion (for example, the bottom portion 52 in the embodiment), and the wall portion is a first flat wall plate portion (for example, the first flat wall plate portion 54 in the embodiment). A first curved wall plate portion (for example, the first curved wall plate portion 55 in the embodiment) that is folded in an arc shape from one of the first flat wall plate portions, and the first flat wall plate of the first curved wall plate portion. A second curved wall plate portion (for example, the second curved wall plate portion 56 in the embodiment) that folds in an arc shape from the opposite side of the portion, and the opposite side of the second curved wall plate portion to the first curved wall plate portion. A third curved wall plate portion (for example, the third curved wall plate portion 57 in the embodiment) that folds in a circular arc shape from the opposite side of the third curved wall plate portion from the second curved wall plate portion on the extension line A second flat wall plate portion that extends (for example, the second flat wall plate portion 58 in the embodiment) and the other side of the first flat wall plate portion. A fourth curved wall plate portion (for example, the fourth curved wall plate portion 59 in the embodiment) that folds in an arc shape on the same side as the first curved wall plate portion, and the first flat wall plate portion of the fourth curved wall plate portion. From the opposite side of the fifth curved wall plate part of the fifth curved wall plate part (for example, the fifth curved wall plate part 60 in the embodiment) folded back in an arc from the opposite side to It is preformed in a shape having a sixth curved wall plate portion (for example, the sixth curved wall plate portion 61 in the embodiment) that is folded back into an arc shape and connected to the second flat wall plate portion, and the pair of side panels are The bottom panel is fitted to both side openings of the main panel so that the bottom is on the insertion tip side, the first flat wall plate is on the bottom plate, and the first curved wall plate is on the first curved plate. The second curved wall plate portion is disposed on the second curved plate portion, and the third curved wall plate portion is disposed on the third curved plate portion. , The second flat wall plate portion on the upper plate portion, the fourth curved wall plate portion on the fourth curved plate portion, and the fifth curved wall plate portion on the fifth curved plate portion, the sixth curved wall plate portion to the curved plate portion, that each brought bonded without gaps, the bulging 脹 portion is formed, the direction of bulging 脹 part, brought closer with the upper plate portion, and said bottom plate portion It is characterized in that it is pressed and plastically deformed so that the whole is folded.

請求項１に係る発明によれば、膨脹部の膨張時に、筒状であり開口方向から見て複数の隅部を有する形状をなすメインパネルの両側開口部を覆うように接合されたサイドパネルにおいては、特にその隅部近傍に、メインパネルに対する不確定なズレを生じる可能性があるが、隅部に予め開口を形成しておくことでこのような不確定なズレを吸収することができる。したがって、可塑性材料から形成される膨脹部を安定した膨張形状で膨張させることができる。しかも、サイドパネルの隅部の開口は、膨脹部が乗員からの荷重で変形する場合もメインパネルに対する不確定なズレを吸収でき、膨脹部を安定的に変形させることができる。 According to the first aspect of the present invention, in the side panel joined so as to cover both side openings of the main panel that is cylindrical and has a plurality of corners when viewed from the opening direction when the expansion part is expanded. In particular, there is a possibility that an indefinite shift with respect to the main panel may occur in the vicinity of the corner, but such an indefinite shift can be absorbed by forming an opening in the corner in advance. Therefore, the expansion part formed from a plastic material can be expanded in a stable expansion shape. In addition, the opening at the corner of the side panel can absorb an indefinite shift with respect to the main panel even when the expansion portion is deformed by a load from the occupant, and the expansion portion can be stably deformed.

請求項２に係る発明によれば、膨脹部の膨張時に、筒状であり開口方向から見て複数の隅部を有する形状をなすメインパネルの両側開口部を覆うように接合されたサイドパネルは伸長することになるが、膨脹部の膨張完了状態においてもサイドパネルは中間部に屈曲部を保持することになるため、屈曲部が変形の余裕（弛み）となって、サイドパネルの不確定なズレの発生を防止することができる。したがって、可塑性材料から形成される膨脹部を安定した膨張形状で膨張させることができる。しかも、サイドパネルの屈曲部による変形の余裕は、膨脹部が乗員からの荷重で変形する場合もメインパネルに対する不確定なズレの発生を防止でき、膨脹部を安定的に変形させることができる。 According to the invention of claim 2, when the expansion portion is expanded, the side panel joined so as to cover both side openings of the main panel that is cylindrical and has a plurality of corners when viewed from the opening direction is Although the side panel will hold the bent part in the middle part even in the expansion completion state of the expansion part, the bent part becomes a deformation margin (slack), and the side panel is uncertain. Generation of deviation can be prevented. Therefore, the expansion part formed from a plastic material can be expanded in a stable expansion shape. In addition, the allowance for deformation due to the bent portion of the side panel can prevent uncertain displacement with respect to the main panel even when the expansion portion is deformed by a load from the occupant, and the expansion portion can be stably deformed.

本発明の第１実施形態のエアバッグ装置を図１〜図９を参照して以下に説明する。
図１は、第１実施形態のエアバッグ装置としてのエアバッグモジュール１１が取り付けられる車両用の座席１２を示す分解斜視図で、この座席１２は、車幅方向に離間して設けられて車両前後方向に延在する一対のシートレール１３と、各シートレール１３にスライド可能に設けられたスライダ１４と、これらスライダ１４に支持され略水平に配置されて乗員の主として腰下を支承するシートクッション（座部）１５と、スライダ１４の車両前後方向の後端部に回動可能に設けられ立設状態で乗員の主として背中を支承するシートバック１６と、シートバック１６のシートクッション１５とは反対側に設けられて乗員の主として後頭部を支承するヘッドレスト１７とを有している。 The airbag apparatus of 1st Embodiment of this invention is demonstrated below with reference to FIGS.
FIG. 1 is an exploded perspective view showing a vehicle seat 12 to which an airbag module 11 as an airbag device of the first embodiment is attached. The seat 12 is provided spaced apart in the vehicle width direction and is arranged in front of and behind the vehicle. A pair of seat rails 13 extending in the direction, a slider 14 provided slidably on each seat rail 13, and a seat cushion (supported mainly by the occupant's lower back) supported by the slider 14 and disposed substantially horizontally. A seat back 16, a seat back 16 that is rotatably provided at a rear end of the slider 14 in the vehicle front-rear direction and supports the back of the occupant mainly in the standing state, and the seat cushion 15 opposite to the seat cushion 15. And a headrest 17 that mainly supports the back of the occupant.

シートクッション１５は、各スライダ１４の内側にそれぞれ固定されるパンブラケット２０と、左右のパンブラケット２０同士を結ぶように車幅方向に延在するコネクティングブラケット２１と、両パンブラケット２０の上側に載置されて両パンブラケット２０に固定されるシートパン２２と、シートパン２２の上側に載置されることでシートパン２２に支持されるクッションパッド２３とを有している。クッションパッド２３は、乗員が着座するもので、ウレタンフォームを表皮で覆って形成されている。 The seat cushion 15 is mounted on the upper side of the pan bracket 20 fixed to the inside of each slider 14, the connecting bracket 21 extending in the vehicle width direction so as to connect the left and right pan brackets 20, and both the pan brackets 20. The seat pan 22 is placed and fixed to the both pan brackets 20, and the cushion pad 23 is supported on the seat pan 22 by being placed on the upper side of the seat pan 22. The cushion pad 23 is a seat on which an occupant sits, and is formed by covering urethane foam with a skin.

そして、図２にも示すように、シートクッション１５におけるクッションパッド２３を支持するシートパン２２の中間所定位置に第１実施形態のエアバッグモジュール１１は取り付けられることになる。 As shown in FIG. 2, the airbag module 11 of the first embodiment is attached to an intermediate predetermined position of the seat pan 22 that supports the cushion pad 23 in the seat cushion 15.

エアバッグモジュール１１は、図３に示すように、両端が接合されて筒状をなすメインパネル２６と、このメインパネル２６の内側に接合される補強プレート２７と、メインパネル２６に両側開口部２８を覆うように接合される一対のサイドパネル２９とからなるエアバッグ本体（膨脹部）３０と、図４に示すように、エアバッグ本体３０の外側に接合される、シートパン２２への支持用の取付ブラケット３２と、エアバッグ本体３０と取付ブラケット３２とで保持されてエアバッグ本体３０内にガスを導入可能な略円筒状のインフレータ３３とを有している。 As shown in FIG. 3, the airbag module 11 includes a main panel 26 that is joined at both ends to form a cylindrical shape, a reinforcing plate 27 that is joined to the inside of the main panel 26, and both side openings 28 in the main panel 26. For supporting the seat pan 22 joined to the outside of the airbag body 30 as shown in FIG. 4 and an airbag body (inflatable portion) 30 comprising a pair of side panels 29 joined so as to cover And a substantially cylindrical inflator 33 that is held by the airbag main body 30 and the mounting bracket 32 and can introduce gas into the airbag main body 30.

メインパネル２６は、図３（ａ）に示すように可塑性材料である金属からなる等幅の薄板が曲げ成形され、図３（ｂ）に示すように両端部同士が接合されることで筒状に形成される。つまり、メインパネル２６は、図５（ａ）にも示すように、薄板を、略長方形状の底板部３５と、底板部３５の一方の長辺側の端縁部から折り返すように円弧状に延出する第１湾曲板部３６と、この第１湾曲板部３６の底板部３５とは反対側の端縁部から折り返すように円弧状に延出する第２湾曲板部３７と、この第２湾曲板部３７の第１湾曲板部３６とは反対側の端縁部から折り返すように円弧状に延出する第３湾曲板部３８と、この第３湾曲板部３８の第２湾曲板部３７とは反対側の端縁部からその延長線上に延出する第１上板部３９と、底板部３５の他方の長辺側の端縁部から第１湾曲板部３６と同じ側において折り返すように円弧状に延出する第４湾曲板部４０と、この第４湾曲板部４０の底板部３５とは反対側の端縁部から折り返すように円弧状に延出する第５湾曲板部４１と、この第５湾曲板部４１の第４湾曲板部４０とは反対側の端縁部から折り返すように円弧状に延出する第６湾曲板部４２と、この第６湾曲板部４２の第５湾曲板部４１とは反対側の端縁部からその延長線上に延出する第２上板部４３とを有する形状に形成し、第１上板部３９と第２上板部４３とを重ね合わせ、あるいは突き合わせて接合することで形成される。 As shown in FIG. 3A, the main panel 26 is formed by bending a thin plate of equal width made of a metal that is a plastic material, and both ends are joined together as shown in FIG. 3B. Formed. That is, as shown in FIG. 5 (a), the main panel 26 is formed in an arc shape so that the thin plate is folded back from the substantially rectangular bottom plate portion 35 and the end portion on one long side of the bottom plate portion 35. A first curved plate portion 36 that extends, a second curved plate portion 37 that extends in an arc shape so as to be folded back from an end edge of the first curved plate portion 36 opposite to the bottom plate portion 35, A second curved plate of the third curved plate portion 38; a third curved plate portion 38 that extends in an arc shape so as to be folded back from an end edge of the second curved plate portion 37 opposite to the first curved plate portion 36; On the same side as the first curved plate portion 36 from the first upper plate portion 39 extending on the extension line from the end edge on the side opposite to the portion 37, and the end portion on the other long side of the bottom plate portion 35 The fourth curved plate portion 40 extending in an arc shape so as to be folded back, and the end portion of the fourth curved plate portion 40 opposite to the bottom plate portion 35 is folded back. A fifth curved plate portion 41 extending in an arc shape and a sixth curved plate portion 41 extending in an arc shape so as to be folded back from an end edge of the fifth curved plate portion 41 opposite to the fourth curved plate portion 40. Formed in a shape having a curved plate portion 42 and a second upper plate portion 43 extending on the extension line from the end edge portion of the sixth curved plate portion 42 opposite to the fifth curved plate portion 41, The first upper plate portion 39 and the second upper plate portion 43 are formed by overlapping or butting and joining.

なお、第１上板部３９と第２上板部４３とが接合された状態で、第１湾曲板部３６と第４湾曲板部４０とが鏡面対称をなし、第２湾曲板部３７と第５湾曲板部４１とが鏡面対称をなし、第３湾曲板部３８と第６湾曲板部４２とが鏡面対称をなし、接合された第１上板部３９および第２上板部４３と底板部３５とが平行をなすことになる。また、第１上板部３９と第２上板部４３とが接合された状態で、メインパネル２６は、開口方向から見たときに、複数の第１湾曲板部３６、第３湾曲板部３８、第４湾曲板部４０および第６湾曲板部４２が外側に凸で湾曲する隅部をなし、第１湾曲板部３６、第２湾曲板部３７、第３湾曲板部３８、第４湾曲板部４０、第５湾曲板部４１および第６湾曲板部４２を角とする六角の略多角形状をなしている。 In the state where the first upper plate portion 39 and the second upper plate portion 43 are joined, the first curved plate portion 36 and the fourth curved plate portion 40 are mirror-symmetrical, and the second curved plate portion 37 and The fifth curved plate portion 41 has mirror symmetry, the third curved plate portion 38 and the sixth curved plate portion 42 have mirror symmetry, and the joined first upper plate portion 39 and second upper plate portion 43. The bottom plate portion 35 is in parallel. When the main panel 26 is viewed from the opening direction with the first upper plate portion 39 and the second upper plate portion 43 being joined, the plurality of first curved plate portions 36 and third curved plate portions are provided. 38, the fourth curved plate portion 40 and the sixth curved plate portion 42 form a corner that protrudes outward and curves, and includes a first curved plate portion 36, a second curved plate portion 37, a third curved plate portion 38, and a fourth curved plate portion. The curved plate portion 40, the fifth curved plate portion 41, and the sixth curved plate portion 42 have a hexagonal substantially polygonal shape with corners.

補強プレート２７も、金属からなるもので、メインパネル２６の底板部３５の内面に接合されて底板部３５を補強する。ここで、メインパネル２６の底板部３５には、インフレータ３３を一部収納状態で保持するため外面から半円筒状に凹み内面から半円筒状に突出する収容部４５が形成されており、補強プレート２７にも同様の形状をなして収容部４５を嵌合させる嵌合部４６が形成されている。 The reinforcing plate 27 is also made of metal, and is joined to the inner surface of the bottom plate portion 35 of the main panel 26 to reinforce the bottom plate portion 35. Here, the bottom plate portion 35 of the main panel 26 is formed with a receiving portion 45 that is recessed in a semi-cylindrical shape from the outer surface and protrudes in a semi-cylindrical shape from the inner surface in order to hold the inflator 33 in a partially stored state. 27 is formed with a fitting portion 46 having the same shape and fitting the accommodating portion 45 therein.

サイドパネル２９は、可塑性材料である金属からなる薄板が押し出しおよび打ち抜き成形されて形成されるもので、外周縁部が同一平面に配置されて開口部５０を画成ししかも外周縁部側が外周縁部の全体に対し略垂直をなす筒状の壁部５１とされ、壁部５１の開口部５０とは反対側が底部５２とされたトレイ状をなしている。このサイドパネル２９の壁部５１は、メインパネル２６の開口部２８に接合されるもので、形状をメインパネル２６の開口部２８に合わせている。つまり、壁部５１は、図５（ａ）にも示すように、略長方形状の第１平壁板部５４と、第１平壁板部５４の一方の長辺側の端縁部から円弧状に折り返す第１湾曲壁板部５５と、この第１湾曲壁板部５５の第１平壁板部５４とは反対側の端縁部から円弧状に折り返す第２湾曲壁板部５６と、この第２湾曲壁板部５６の第１湾曲壁板部５５とは反対側の端縁部から円弧状に折り返す第３湾曲壁板部５７と、この第３湾曲壁板部５７の第２湾曲壁板部５６とは反対側の端縁部からその延長線上に延出する第２平壁板部５８と、第１平壁板部５４の他方の端縁部から第１湾曲壁板部５５と同じ側において円弧状に折り返す第４湾曲壁板部５９と、この第４湾曲壁板部５９の第１平壁板部５４とは反対側の端縁部から円弧状に折り返す第５湾曲壁板部６０と、この第５湾曲壁板部６０の第４湾曲壁板部５９とは反対側の端縁部から円弧状に折り返す第６湾曲壁板部６１とを有しており、この第６湾曲壁板部６１の第５湾曲壁板部６０とは反対側の端縁部は第２平壁板部５８の第３湾曲壁板部５７とは反対側につながっている。 The side panel 29 is formed by extruding and punching a thin plate made of a metal that is a plastic material. The outer peripheral edge portion is arranged on the same plane to define the opening 50, and the outer peripheral edge side is the outer peripheral edge. The wall portion 51 has a cylindrical shape that is substantially perpendicular to the entire portion, and has a bottom 52 on the opposite side of the wall portion 51 from the opening 50. The wall portion 51 of the side panel 29 is joined to the opening portion 28 of the main panel 26, and the shape is matched with the opening portion 28 of the main panel 26. That is, as shown in FIG. 5A, the wall portion 51 is formed from a substantially rectangular first flat wall plate portion 54 and an edge portion on one long side of the first flat wall plate portion 54. A first curved wall plate portion 55 that is folded back in an arc shape, and a second curved wall plate portion 56 that is folded back in an arc shape from an edge of the first curved wall plate portion 55 opposite to the first flat wall plate portion 54; A third curved wall plate portion 57 that turns back in an arc shape from an end edge of the second curved wall plate portion 56 opposite to the first curved wall plate portion 55, and a second curved shape of the third curved wall plate portion 57. A second flat wall plate portion 58 extending on an extension line from an end edge opposite to the wall plate portion 56 and a first curved wall plate portion 55 from the other end edge of the first flat wall plate portion 54. A fourth curved wall plate portion 59 that is folded back in an arc shape on the same side, and a fifth curved wall that is folded back in an arc shape from the edge of the fourth curved wall plate portion 59 opposite to the first flat wall plate portion 54. Board part 6 And a sixth curved wall plate portion 61 that is folded back in an arc shape from the edge of the fifth curved wall plate portion 60 opposite to the fourth curved wall plate portion 59. The edge portion of the plate portion 61 opposite to the fifth curved wall plate portion 60 is connected to the opposite side of the second flat wall plate portion 58 to the third curved wall plate portion 57.

このサイドパネル２９も、第１湾曲壁板部５５と第４湾曲壁板部５９とが鏡面対称をなし、第２湾曲壁板部５６と第５湾曲壁板部６０とが鏡面対称をなし、第３湾曲壁板部５７と第６湾曲壁板部６１とが鏡面対称をなし、第１平壁板部５４と、第２平壁板部５８とが平行をなすことになる。また、サイドパネル２９は、開口方向（厚さ方向）から見たときに、第１湾曲壁板部５５、第２湾曲壁板部５６、第３湾曲壁板部５７、第４湾曲壁板部５９、第５湾曲壁板部６０および第６湾曲壁板部６１を角とする六角の略多角形状をなすとともに、底部５２における第１湾曲壁板部５５の内側部分が外側に凸で湾曲する隅部６３を構成し、底部５２における第３湾曲壁板部５７の内側部分が外側に凸で湾曲する隅部６４を構成し、底部５２における第４湾曲壁板部５９の内側部分が外側に凸で湾曲する隅部６５を構成し、底部５２における第６湾曲壁板部６１の内側部分が外側に凸で湾曲する隅部６６を構成することになる。 Also in this side panel 29, the first curved wall plate portion 55 and the fourth curved wall plate portion 59 have mirror symmetry, the second curved wall plate portion 56 and the fifth curved wall plate portion 60 have mirror symmetry, The third curved wall plate portion 57 and the sixth curved wall plate portion 61 are mirror-symmetrical, and the first flat wall plate portion 54 and the second flat wall plate portion 58 are parallel to each other. Further, when viewed from the opening direction (thickness direction), the side panel 29 has a first curved wall plate portion 55, a second curved wall plate portion 56, a third curved wall plate portion 57, and a fourth curved wall plate portion. 59, the hexagonal substantially polygonal shape with the fifth curved wall plate portion 60 and the sixth curved wall plate portion 61 as corners, and the inner portion of the first curved wall plate portion 55 in the bottom portion 52 is convexly curved outward. The corner portion 63 is configured, the inner portion of the third curved wall plate portion 57 in the bottom portion 52 forms a corner portion 64 that is convex and curved outward, and the inner portion of the fourth curved wall plate portion 59 in the bottom portion 52 is outward. A corner 65 that is convex and curved is formed, and an inner portion of the sixth curved wall plate 61 in the bottom 52 forms a corner 66 that is convex and curved outward.

そして、サイドパネル２９の各隅部６３〜６６には、略円形状のスロット穴（開口）７０〜７３がそれぞれ貫通形成されている。なお、スロット穴７０〜７３は、ガスによるエアバッグ本体３０の膨張に影響のない大きさに形成されている。ここで、エアバッグ本体３０の膨張時に、メインパネル２６は、第１湾曲板部３６と第２湾曲板部３７と第３湾曲板部３８とが伸びて図５（ｂ）に示すように略直線状になるとともに、第４湾曲板部４０と第５湾曲板部４１と第６湾曲板部４２とが伸びて略直線状となり、サイドパネル２９も、第１湾曲壁板部５５と第２湾曲壁板部５６と第３湾曲壁板部５７とが伸びて略直線状となり、第４湾曲壁板部５９と第５湾曲壁板部６０と第６湾曲壁板部６１とが伸びて略直線状となる。このとき、サイドパネル２９の各隅部６３〜６６は角度が変化するものの残存し、これら隅部６３〜６６に略円形状のスロット穴７０〜７３がそれぞれ配置されていることになる。メインパネル２６の第１湾曲板部３６、第３湾曲板部３８、第４湾曲板部４０および第６湾曲板部４２も、角度が変化するものの残存する。 Further, substantially circular slot holes (openings) 70 to 73 are formed through the respective corners 63 to 66 of the side panel 29 so as to penetrate therethrough. The slot holes 70 to 73 are formed in a size that does not affect the expansion of the airbag main body 30 by gas. Here, when the airbag body 30 is inflated, the main panel 26 has a first curved plate portion 36, a second curved plate portion 37, and a third curved plate portion 38 that extend as shown in FIG. While becoming linear, the 4th curved board part 40, the 5th curved board part 41, and the 6th curved board part 42 extend, and it becomes substantially linear form, and the side panel 29 also has the 1st curved wall board part 55 and 2nd. The curved wall plate portion 56 and the third curved wall plate portion 57 extend to be substantially linear, and the fourth curved wall plate portion 59, the fifth curved wall plate portion 60, and the sixth curved wall plate portion 61 extend to be approximately. It becomes linear. At this time, the corners 63 to 66 of the side panel 29 remain, although the angles change, and the substantially circular slot holes 70 to 73 are disposed in the corners 63 to 66, respectively. The first curved plate portion 36, the third curved plate portion 38, the fourth curved plate portion 40, and the sixth curved plate portion 42 of the main panel 26 also remain, although their angles change.

上記のサイドパネル２９が、メインパネル２６の両開口部２８に底部５２が挿入先端側となるようにして嵌合され、この状態で、底板部３５に第１平壁板部５４が、第１湾曲板部３６に第１湾曲壁板部５５が、第２湾曲板部３７に第２湾曲壁板部５６が、第３湾曲板部３８に第３湾曲壁板部５７が、第１上板部３９および第２上板部４３に第２平壁板部５８が、第４湾曲板部４０に第４湾曲壁板部５９が、第５湾曲板部４１に第５湾曲壁板部６０が、第６湾曲板部４２に第６湾曲壁板部６１が、それぞれ隙間なく接合させられる。 The side panel 29 is fitted to both the opening portions 28 of the main panel 26 so that the bottom portion 52 is on the insertion tip side. In this state, the first flat wall plate portion 54 is attached to the bottom plate portion 35. The first curved wall plate portion 55 is formed on the curved plate portion 36, the second curved wall plate portion 56 is formed on the second curved plate portion 37, the third curved wall plate portion 57 is formed on the third curved plate portion 38, and the first upper plate. The second flat wall plate portion 58 is formed on the portion 39 and the second upper plate portion 43, the fourth curved wall plate portion 59 is formed on the fourth curved plate portion 40, and the fifth curved wall plate portion 60 is formed on the fifth curved plate portion 41. The sixth curved wall plate portion 61 is joined to the sixth curved plate portion 42 without any gap.

上記のようにしてメインパネル２６の両端部をサイドパネル２９で閉塞して構成される図３（ｂ）に示すエアバッグ本体３０は、メインパネル２６の第１上板部３９および第２上板部４３と、底板部３５とを近接させる方向に全体が折り畳まれるように押圧されて塑性変形させられる（図３（ｃ）に示す状態）。 The airbag main body 30 shown in FIG. 3B configured by closing both ends of the main panel 26 with the side panels 29 as described above includes the first upper plate portion 39 and the second upper plate of the main panel 26. The part 43 and the bottom plate part 35 are pressed and plastically deformed so as to be folded in the direction in which the part 43 and the bottom plate part 35 approach each other (state shown in FIG. 3C).

図４に示すように、取付ブラケット３２には、インフレータ３３を一部収納状態で保持するため上面から半円筒状に凹み下面から半円筒状に突出する収容部７５が形成されている。取付ブラケット３２は、その収容部７５とエアバッグ本体３０の収容部４５とで間にインフレータ３３を収容した状態でエアバッグ本体３０のメインパネル２６の底板部３５の外面に接合される。なお、上記した各部の接合は、例えばミグロウ付け溶接で行われることになる。 As shown in FIG. 4, the mounting bracket 32 is formed with a receiving portion 75 that is recessed in a semi-cylindrical shape from the upper surface and protrudes in a semi-cylindrical shape from the lower surface in order to hold the inflator 33 in a partially stored state. The mounting bracket 32 is joined to the outer surface of the bottom plate portion 35 of the main panel 26 of the airbag body 30 with the inflator 33 being accommodated between the accommodation portion 75 and the accommodation portion 45 of the airbag body 30. In addition, joining of each above-mentioned part will be performed, for example by migrowel welding.

このようにして、エアバッグ本体３０にインフレータ３３および取付ブラケット３２が取り付けられ、また、取付ブラケット３２およびエアバッグ本体３０の一端側が若干折り曲げられ、さらに、防水性のカバー７７で全体が被覆されてエアバッグモジュール１１が形成される。このエアバッグモジュール１１は、図２に示すように、シートクッション１５のシートパン２２の上側の所定位置に、長さ方向を車幅方向に沿わせ且つ前上がりに傾斜した状態で固定され、その上側がクッションパッド２３で覆われる。 In this way, the inflator 33 and the mounting bracket 32 are attached to the airbag main body 30, one end side of the mounting bracket 32 and the airbag main body 30 is slightly bent, and the whole is covered with the waterproof cover 77. The airbag module 11 is formed. As shown in FIG. 2, the airbag module 11 is fixed to a predetermined position on the upper side of the seat pan 22 of the seat cushion 15 in a state where the length direction is along the vehicle width direction and the vehicle is inclined upward. The upper side is covered with a cushion pad 23.

以上のエアバッグモジュール１１においては、車両衝突時に例えば所定以上の重力加速度が検出される等の展開条件が整うとインフレータ３３が点火し、折り畳まれた状態にあったエアバッグ本体３０がインフレータ３３が発生するガスで、図２に二点鎖線で示すように上方やや斜め後ろにカバー７７を破って膨張し、クッションパッド２３を上方に押圧する。すると、クッションパッド２３の中間位置が上側に膨出し膨出部２３ａを形成することになって、座席１２に着座しシートベルトを装着した状態にある乗員の腰下を前側から抑えて腰の前方移動を規制することになる。このとき、インフレータ３３のガス発生終了後に乗員の腰下から大きな荷重がエアバッグ本体３０に加わると、例えば図６に示すように、エアバッグ本体３０が変形して乗員の腰下から加わる荷重を吸収する。 In the airbag module 11 described above, the inflator 33 is ignited when the deployment condition such as, for example, a gravitational acceleration of a predetermined value or more is detected at the time of a vehicle collision, and the airbag body 30 in the folded state is With the generated gas, as shown by a two-dot chain line in FIG. 2, the cover 77 is broken slightly diagonally upward and inflated, and the cushion pad 23 is pressed upward. Then, the middle position of the cushion pad 23 bulges upward to form a bulging portion 23a, and the lower back of the occupant who is seated on the seat 12 and wearing the seat belt is restrained from the front, and the front of the waist The movement will be restricted. At this time, if a large load is applied to the airbag main body 30 from the occupant's lower back after the gas generation of the inflator 33 is finished, for example, as shown in FIG. Absorb.

以上に述べた第１実施形態のエアバッグモジュール１１によれば、エアバッグ本体３０の膨張時に、筒状であり開口方向から見て複数の隅部を有する形状をなすメインパネル２６の両側開口部２８を覆うように接合されたサイドパネル２９においては、特にその隅部６３〜６６の近傍に、メインパネル２６に対する不確定なズレを生じる可能性があるが、隅部６３〜６６に予めスロット穴７０〜７３を形成しておくことでこのような不確定なズレを吸収することができる。したがって、可塑性材料から形成されるエアバッグ本体３０を安定した膨張形状で膨張させることができる。しかも、サイドパネル２９の隅部６３〜６６のスロット穴７０〜７３は、エアバッグ本体３０が乗員からの荷重で変形する場合もメインパネル２６に対する不確定なズレを吸収でき、エアバッグ本体３０を安定的に変形させることができる。 According to the airbag module 11 of the first embodiment described above, when the airbag body 30 is inflated, both side openings of the main panel 26 that are cylindrical and have a plurality of corners when viewed from the opening direction. In the side panel 29 joined so as to cover 28, there is a possibility that an uncertain deviation with respect to the main panel 26 may occur in the vicinity of the corners 63 to 66. By forming 70 to 73, it is possible to absorb such an indefinite shift. Therefore, the airbag main body 30 formed from a plastic material can be inflated in a stable inflated shape. In addition, the slot holes 70 to 73 in the corners 63 to 66 of the side panel 29 can absorb an indefinite shift with respect to the main panel 26 even when the airbag body 30 is deformed by a load from an occupant. It can be stably deformed.

なお、以上の第１実施形態においては、図７に示すように、隅部６３〜６６のスロット穴７０〜７３だけではなく、スロット穴８０をサイドパネル２９の対角線交点部に設ければ、さらに良好な効果が得られる。また、サイドパネル２９の隅部６３〜６６に設ける開口として、円形のスロット穴に限らず、例えば、図８に示すように対角線方向に長い楕円形を含む長穴形状のスロット穴８２〜８５としたり、図９に示すように単に対角線方向に沿うスリット８６〜８９を形成したりすることも可能である。 In the first embodiment described above, as shown in FIG. 7, if not only the slot holes 70 to 73 of the corners 63 to 66 but also the slot holes 80 are provided at the diagonal intersections of the side panels 29, Good effects can be obtained. Further, the openings provided in the corners 63 to 66 of the side panel 29 are not limited to circular slot holes, but, for example, slot holes 82 to 85 having a long hole shape including an ellipse that is long in a diagonal direction as shown in FIG. Alternatively, as shown in FIG. 9, it is possible to simply form slits 86 to 89 along the diagonal direction.

次に、本発明の第２実施形態を主に図１０を参照して以下に第１実施形態との相違部分を中心に説明する。なお、第１実施形態と同様の部分には同一の符号を付しその説明は略す。 Next, a second embodiment of the present invention will be described mainly with reference to FIG. 10 focusing on differences from the first embodiment. In addition, the same code | symbol is attached | subjected to the part similar to 1st Embodiment, and the description is abbreviate | omitted.

第２実施形態においては、図１０に示すように、エアバッグ本体３０が膨張を完了する膨張完了状態においても、サイドパネル２９が中間部に屈曲部９１を保持するように形成されている。つまり、膨張時にメインパネル２６がサイドパネル２９ともに上方に伸長して第２湾曲板部３７および第５湾曲板部４１（ともに図５参照）を直線状にして略角筒状になっても、サイドパネル２９が中間部つまり底部５２に、エアバッグ本体３０内側に凸の屈曲部９１を保持するように形成されている。 In the second embodiment, as shown in FIG. 10, the side panel 29 is formed so as to hold the bent portion 91 at the intermediate portion even when the airbag main body 30 completes inflating. That is, even if the main panel 26 extends upward together with the side panel 29 during expansion and the second curved plate portion 37 and the fifth curved plate portion 41 (both refer to FIG. 5) are linearly formed into a substantially rectangular tube shape, The side panel 29 is formed in the middle portion, that is, the bottom portion 52 so as to hold a bent portion 91 that is convex on the inner side of the airbag body 30.

以上に述べた第２実施形態によれば、エアバッグ本体３０の膨張時に、筒状のメインパネル２６の両側開口部２８を覆うように接合されたサイドパネル２９は伸長することになるが、エアバッグ本体３０の膨張完了状態においてもサイドパネル２９は底部５２に屈曲部９１を保持することになるため、屈曲部９１が変形の余裕（弛み）となって、サイドパネル２９の不確定なズレの発生を防止することができる。つまり、サイドパネル２９のアスペクト比をルーズで膨張を完了するようにすることで、サイドパネル２９の隅部６３〜６６にかかるストレスを緩和し不確定なズレの発生を防止する。したがって、可塑性材料から形成されるエアバッグ本体３０を安定した膨張形状で膨張させることができる。しかも、サイドパネル２９の屈曲部９１による変形の余裕は、エアバッグ本体３０が乗員からの荷重で変形する場合もメインパネル２６に対する不確定なズレの発生を防止でき、エアバッグ本体３０を安定的に変形させることができる。 According to the second embodiment described above, when the airbag main body 30 is inflated, the side panel 29 joined so as to cover both side openings 28 of the cylindrical main panel 26 extends. Since the side panel 29 holds the bent portion 91 at the bottom 52 even when the bag body 30 is completely inflated, the bent portion 91 becomes a deformation allowance (slack), and an indefinite shift of the side panel 29 occurs. Occurrence can be prevented. That is, by completing the expansion with the aspect ratio of the side panel 29 being loose, the stress applied to the corners 63 to 66 of the side panel 29 is alleviated and the occurrence of indefinite deviation is prevented. Therefore, the airbag main body 30 formed from a plastic material can be inflated in a stable inflated shape. In addition, the deformation margin of the side panel 29 due to the bent portion 91 can prevent an indefinite shift with respect to the main panel 26 even when the airbag body 30 is deformed by a load from an occupant, and the airbag body 30 can be made stable. Can be transformed into

なお、上記した第１実施形態においては、サイドパネル２９がエアバッグ本体３０の膨張完了状態に中間部に屈曲部９１を保持する形状としなくとも、隅部６３〜６６のスロット穴７０〜７３でエアバッグ本体３０を安定した膨張形状で膨張させることができることになるが、第１実施形態と第２実施形態とを組み合わせることで、より一層確実に、エアバッグ本体３０を安定した膨張形状で膨張させることができる。 In the first embodiment described above, even if the side panel 29 does not have a shape that holds the bent portion 91 at the intermediate portion when the airbag main body 30 is in an inflated state, the slot holes 70 to 73 in the corner portions 63 to 66 are used. Although the airbag main body 30 can be inflated in a stable inflated shape, the airbag main body 30 is inflated in a stable inflated shape more reliably by combining the first embodiment and the second embodiment. Can be made.

また、上記した第１実施形態および第２実施形態では、図示は略すが、インフレータ３３を駆動するためのエアバッグ制御部が、各座席１２に設けられたエアバッグモジュール１１の各インフレータ３３のそれぞれの駆動条件に、シートベルトのバックルに設けられた着脱センサから出力されるシートベルト着脱検出信号で判断される、対応する座席１２用のシートベルトがバックルに装着状態にあることを含んでいる。つまり、シートベルトが装着されていればエアバッグモジュール１１のエアバッグ本体３０の展開が許容され、シートベルトが装着されていなければエアバッグ本体３０の展開が禁止されることになる。同様に、エアバッグモジュール１１のエアバッグ本体３０の展開を、シートベルトの装着時に作動が許容されシートベルトの未装着時に作動が禁止されるシートベルトプリテンショナと連動させても良い。 In the first and second embodiments described above, although not shown, an airbag control unit for driving the inflator 33 is provided for each inflator 33 of the airbag module 11 provided in each seat 12. This driving condition includes that the corresponding seat belt for the seat 12 determined by the seat belt attachment / detachment detection signal output from the attachment / detachment sensor provided on the buckle of the seat belt is attached to the buckle. That is, when the seat belt is attached, the airbag body 30 of the airbag module 11 is allowed to deploy, and when the seat belt is not attached, the airbag body 30 is prohibited from being deployed. Similarly, the deployment of the airbag body 30 of the airbag module 11 may be interlocked with a seat belt pretensioner that is permitted to operate when the seat belt is attached and prohibited when the seat belt is not attached.

さらに、シートクッション１５内やシートレール１３に設けられる乗員検出装置からの乗員の体格判定信号や着座位置信号などから乗員の体格および着座位置を判定し、その結果に基づいてエアバッグモジュール１１を上下・前後・左右のうちの少なくともいずれか一の方向に移動させるように構成しても良い。
加えて、エアバッグ本体３０を金属以外の可塑性材料である樹脂で形成しても良く、メインパネル２６およびサイドパネル２９のうちの一方を金属、他方を樹脂で形成しても良い。 Furthermore, the occupant's physique and seating position are determined from the occupant's physique determination signal and the seating position signal from the occupant detection device provided in the seat cushion 15 and the seat rail 13, and the airbag module 11 is moved up and down based on the result. -You may comprise so that it may move to at least any one direction of front and rear and right and left.
In addition, the airbag body 30 may be formed of a resin that is a plastic material other than metal, and one of the main panel 26 and the side panel 29 may be formed of metal and the other may be formed of resin.

本発明の第１実施形態のエアバッグ装置が適用された座席を示す分解斜視図である。It is a disassembled perspective view which shows the seat to which the airbag apparatus of 1st Embodiment of this invention was applied. 本発明の第１実施形態のエアバッグ装置が適用された座席の要部を示す側断面図である。It is a sectional side view showing the important section of the seat to which the air bag device of a 1st embodiment of the present invention was applied. 本発明の第１実施形態のエアバッグ装置におけるエアバッグ本体を示す斜視図であって、（ａ）は分解状態を、（ｂ）は組み立て状態を、（ｃ）は組み立て後に折り畳んだ状態を、それぞれ示すものである。BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the airbag main body in the airbag apparatus of 1st Embodiment of this invention, Comprising: (a) is a disassembled state, (b) is an assembled state, (c) is the state folded after assembly, Each is shown. 本発明の第１実施形態のエアバッグ装置を示す側断面図である。1 is a side sectional view showing an airbag apparatus according to a first embodiment of the present invention. 本発明の第１実施形態のエアバッグ装置におけるエアバッグ本体を示す側面図であって、（ａ）は折り畳み前の状態を、（ｂ）は膨張時の状態を、それぞれ示すものである。It is a side view which shows the airbag main body in the airbag apparatus of 1st Embodiment of this invention, Comprising: (a) shows the state before folding, (b) shows the state at the time of expansion | swelling, respectively. 本発明の第１実施形態のエアバッグ装置におけるエアバッグ本体の乗員からの荷重を受けた変形状態を示す斜視図である。It is a perspective view which shows the deformation | transformation state which received the load from the passenger | crew of the airbag main body in the airbag apparatus of 1st Embodiment of this invention. 本発明の第１実施形態のエアバッグ装置におけるエアバッグ本体の変形例の膨張時の状態を示す側面図である。It is a side view which shows the state at the time of expansion | swelling of the modification of the airbag main body in the airbag apparatus of 1st Embodiment of this invention. 本発明の第１実施形態のエアバッグ装置におけるエアバッグ本体の別の変形例の膨張時の状態を示す側面図である。It is a side view which shows the state at the time of expansion | swelling of another modification of the airbag main body in the airbag apparatus of 1st Embodiment of this invention. 本発明の第１実施形態のエアバッグ装置におけるエアバッグ本体のさらに別の変形例の膨張時の状態を示す側面図である。It is a side view which shows the state at the time of the expansion | swelling of another modification of the airbag main body in the airbag apparatus of 1st Embodiment of this invention. 本発明の第２実施形態のエアバッグ装置におけるエアバッグ本体の膨張時の状態を示す正断面図である。It is a front sectional view showing a state at the time of inflation of an airbag body in an airbag device of a second embodiment of the present invention.

Explanation of symbols

１１エアバッグモジュール（エアバッグ装置）
１２座席
１５シートクッション（座部）
２６メインパネル
２８開口部
２９サイドパネル
３０エアバッグ本体（膨脹部）
３６第１湾曲板部（隅部）
３８第３湾曲板部（隅部）
４０第４湾曲板部（隅部）
４２第６湾曲板部（隅部）
６３〜６６隅部
７０〜７３，８２〜８５スロット穴（開口）
８６〜８９スリット（開口）
９１屈曲部

11 Airbag module (airbag device)
12 seats 15 seat cushion (seat)
26 Main panel 28 Opening 29 Side panel 30 Airbag body (inflatable part)
36 First curved plate (corner)
38 Third Curved Plate (Corner)
40 Fourth curved plate (corner)
42 6th curved plate (corner)
63-66 Corner 70-73, 82-85 Slot hole (opening)
86-89 slit (opening)
91 Bend

Claims

An airbag device having an inflatable portion that is provided on a seat portion of a vehicle seat and is formed of a plastic material that inflates upward at the time of a vehicle collision,
The expansion portion is a cylindrical main panel having a plurality of corners when viewed from the opening direction, and a shape having a plurality of corners joined to the main panel so as to cover both side openings. The side panel is formed with an opening at the corner of the side panel,
The main panel includes a bottom plate portion, a first curved plate portion extending in an arc shape so as to be folded back from one of the bottom plate portions, and a circular shape so as to be folded back from the opposite side of the first curved plate portion to the bottom plate portion. A second curved plate portion extending in an arc shape, a third curved plate portion extending in an arc shape so as to be folded back from the side opposite to the first curved plate portion of the second curved plate portion, and the third curved shape An upper plate portion extending on an extension line from the opposite side of the plate portion to the second curved plate portion, and an arc shape extending from the other side of the bottom plate portion on the same side as the first curved plate portion. A fourth curved plate portion, a fifth curved plate portion extending in an arc shape so as to be folded back from the side opposite to the bottom plate portion of the fourth curved plate portion, and the fourth curved plate of the fifth curved plate portion. Pre-shaped into a shape having a sixth curved plate portion that extends in an arc shape so as to be folded back from the opposite side of the plate portion and is connected to the upper plate portion. ,
The side panel has a tray shape in which one side of a cylindrical wall portion is a bottom portion, and the wall portion is folded in an arc shape from one of the first flat wall plate portion and the first flat wall plate portion. A first curved wall plate, a second curved wall plate turned back in an arc from the opposite side of the first curved wall plate to the first flat wall plate, and the second curved wall plate A third curved wall plate portion that is folded in an arc shape from the side opposite to the first curved wall plate portion, and a third curved wall plate portion that extends on the extension line from the opposite side of the second curved wall plate portion. A second flat wall plate portion, a fourth curved wall plate portion folded back in an arc from the other side of the first flat wall plate portion on the same side as the first curved wall plate portion, and the fourth curved wall plate portion. A fifth curved wall plate portion that is folded back in an arc shape from the side opposite to the one flat wall plate portion; and a second curved wall plate portion that is folded back in an arc shape from the side opposite to the fourth curved wall plate portion of the fifth curved wall plate portion. Flat wall board Is pre-molded into a shape having a sixth curved wall plate portion connected to,
The pair of side panels are fitted to both side openings of the main panel so that the bottom part is on the insertion tip side, the first flat wall plate part is attached to the bottom plate part, and the first curved plate part is attached to the first curved plate part. The first curved wall plate portion, the second curved plate portion on the second curved wall plate portion, the third curved plate portion on the third curved wall plate portion, and the upper plate portion on the second flat surface. The fourth curved wall plate portion, the fourth curved wall plate portion on the fourth curved plate portion, the fifth curved wall plate portion on the fifth curved plate portion, and the sixth curved wall plate on the sixth curved plate portion. parts are by respectively brought into joining without a gap, the bulging 脹 portion is formed,
Bulging 脹 portion, said upper plate portion, an air bag device characterized by being pressed by comprising been plastically deformed so that the entire in a direction to close the said bottom plate portion is folded.

A main panel that is formed of a plastic material and has a shape that has a plurality of corners when viewed from the opening direction, and a plurality of corners that are joined to the main panel so as to cover both side openings. An airbag device having an inflatable portion composed of a side panel having a shape,
The expansion portion is provided in a seat portion of a vehicle seat in a folded state, expands upward while extending the side panel at the time of a vehicle collision, and bends to an intermediate portion of the side panel even in the expansion completed state. Part holding,
The main panel includes a bottom plate portion, a first curved plate portion extending in an arc shape so as to be folded back from one of the bottom plate portions, and a circular shape so as to be folded back from the opposite side of the first curved plate portion to the bottom plate portion. A second curved plate portion extending in an arc shape, a third curved plate portion extending in an arc shape so as to be folded back from the side opposite to the first curved plate portion of the second curved plate portion, and the third curved shape An upper plate portion extending on an extension line from the opposite side of the plate portion to the second curved plate portion, and an arc shape extending from the other side of the bottom plate portion on the same side as the first curved plate portion. A fourth curved plate portion, a fifth curved plate portion extending in an arc shape so as to be folded back from the side opposite to the bottom plate portion of the fourth curved plate portion, and the fourth curved plate of the fifth curved plate portion. Pre-shaped into a shape having a sixth curved plate portion that extends in an arc shape so as to be folded back from the opposite side of the plate portion and is connected to the upper plate portion. ,
The side panel has a tray shape in which one side of a cylindrical wall portion is a bottom portion, and the wall portion is folded in an arc shape from one of the first flat wall plate portion and the first flat wall plate portion. A first curved wall plate, a second curved wall plate turned back in an arc from the opposite side of the first curved wall plate to the first flat wall plate, and the second curved wall plate A third curved wall plate portion that is folded in an arc shape from the side opposite to the first curved wall plate portion, and a third curved wall plate portion that extends on the extension line from the opposite side of the second curved wall plate portion. A second flat wall plate portion, a fourth curved wall plate portion folded back in an arc from the other side of the first flat wall plate portion on the same side as the first curved wall plate portion, and the fourth curved wall plate portion. A fifth curved wall plate portion that is folded back in an arc shape from the side opposite to the one flat wall plate portion; and a second curved wall plate portion that is folded back in an arc shape from the side opposite to the fourth curved wall plate portion of the fifth curved wall plate portion. Flat wall board Is pre-molded into a shape having a sixth curved wall plate portion connected to,
The pair of side panels are fitted to both side openings of the main panel so that the bottom part is on the insertion tip side, the first flat wall plate part is attached to the bottom plate part, and the first curved plate part is attached to the first curved plate part. The first curved wall plate portion, the second curved plate portion on the second curved wall plate portion, the third curved plate portion on the third curved wall plate portion, and the upper plate portion on the second flat surface. The fourth curved wall plate portion, the fourth curved wall plate portion on the fourth curved plate portion, the fifth curved wall plate portion on the fifth curved plate portion, and the sixth curved wall plate on the sixth curved plate portion. parts are by respectively brought into joining without a gap, the bulging 脹 portion is formed,
Bulging 脹 portion, said upper plate portion, an air bag device characterized by being pressed by comprising been plastically deformed so that the entire in a direction to close the said bottom plate portion is folded.