JP2006248372A - Gas generator for air bag - Google Patents
Gas generator for air bag Download PDFInfo
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- JP2006248372A JP2006248372A JP2005067383A JP2005067383A JP2006248372A JP 2006248372 A JP2006248372 A JP 2006248372A JP 2005067383 A JP2005067383 A JP 2005067383A JP 2005067383 A JP2005067383 A JP 2005067383A JP 2006248372 A JP2006248372 A JP 2006248372A
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- Prior art keywords
- combustion chamber
- cup member
- gas
- igniter
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000002485 combustion reaction Methods 0.000 claims abstract description 62
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 abstract description 43
- 239000000567 combustion gas Substances 0.000 abstract description 8
- 239000003795 chemical substances by application Substances 0.000 description 10
- 239000002826 coolant Substances 0.000 description 4
- 239000013585 weight reducing agent Substances 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
- B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/263—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a variable source, e.g. plural stage or controlled output
- B60R2021/2633—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a variable source, e.g. plural stage or controlled output with a plurality of inflation levels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
- B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
- B60R2021/2648—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder comprising a plurality of combustion chambers or sub-chambers
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
Description
本発明は、自動車の乗員拘束装置に使用できるエアバッグ用ガス発生器に関する。 The present invention relates to a gas generator for an air bag that can be used in an occupant restraint device for an automobile.
自動車の乗員拘束装置に使用するエアバッグ用ガス発生器には、自動車メーカーからの小型化と軽量化の要請がある。このような小型化と軽量化の要請に応える方法としては、エアバッグ用ガス発生器として要求される性能及び品質を維持した上で、構造を簡略化して部品点数を削減することが効果的である。 There is a request from an automobile manufacturer to reduce the size and weight of an air bag gas generator used in an automobile occupant restraint system. As a method to meet the demands for miniaturization and weight reduction, it is effective to simplify the structure and reduce the number of parts while maintaining the performance and quality required for an air bag gas generator. is there.
特許文献１の図１には、第一室３４が第二室８２を内包したエアバッグインフレータが示されている。第二室８２のガス出口オリフィス104は、絶縁遮壁剤106で覆われており、第二室８２内から所定圧がかかったときに開いたり、破れたりする。 FIG. 1 of Patent Document 1 shows an airbag inflator in which the first chamber 34 includes the second chamber 82. The gas outlet orifice 104 of the second chamber 82 is covered with an insulating wall barrier 106 and opens or breaks when a predetermined pressure is applied from the second chamber 82.
特許文献２の図１には、固定隔壁で分離された第１燃焼室200と第２燃焼室180を有するインフレータ１０が示されている。第１燃焼室200内の点火カップ220は、点火剤222の燃焼生成物に押されて軸方向にスライドすることが記載されている。 FIG. 1 of Patent Document 2 shows an inflator 10 having a first combustion chamber 200 and a second combustion chamber 180 separated by a fixed partition wall. It is described that the ignition cup 220 in the first combustion chamber 200 is pushed by the combustion product of the igniter 222 and slides in the axial direction.
特許文献３の図１には、２つの燃焼室５ａ、５ｂを有するエアバッグ用ガス発生器が示されている。
特許文献２、３のインフレータは構造が複雑で、軽量化の要請に充分に応えることができない。特許文献１のインフレータは、特許文献２、３のインフレータと比べると構造は簡単であるが、第２燃焼室は固定部材と絶縁部材により、第１燃焼室と分離されている。 The inflators of Patent Documents 2 and 3 have a complicated structure and cannot sufficiently meet the demand for weight reduction. The inflator of Patent Document 1 is simpler in structure than the inflators of Patent Documents 2 and 3, but the second combustion chamber is separated from the first combustion chamber by a fixing member and an insulating member.
本発明は、高い性能及び品質を維持したまま、構造を簡略化することで全体として軽量化でき、製造工程も簡略化できるエアバッグ用ガス発生器を提供することを課題とする。 An object of the present invention is to provide a gas generator for an air bag that can be lightened as a whole by simplifying the structure while maintaining high performance and quality, and that can simplify the manufacturing process.
本発明は、課題の解決手段として、
ガス排出口を有するハウジング内に、それぞれ独自のガス発生剤及び点火手段が配置された第１燃焼室と第２燃焼室を有しており、
前記第２燃焼室が、前記ハウジング内に配置されたカップ部材で第１燃焼室と分離され、前記カップ部材内には第２ガス発生剤と第２点火手段が配置されており、
前記カップ部材が前記第２点火手段の作動により移動して、前記第２燃焼室で発生したガスの排出経路を形成するものである、エアバッグ用ガス発生器を提供する。
As a means for solving the problems, the present invention
A first combustion chamber and a second combustion chamber each having a unique gas generating agent and ignition means disposed in a housing having a gas discharge port;
The second combustion chamber is separated from the first combustion chamber by a cup member disposed in the housing, and a second gas generating agent and a second ignition means are disposed in the cup member.
An airbag gas generator is provided in which the cup member is moved by the operation of the second ignition means to form a discharge path for the gas generated in the second combustion chamber.
第２燃焼室を形成するカップ部材で第１燃焼室と第２燃焼室を分離するものであるが、第２燃焼室が移動できるようにすることで、第２燃焼室の固定作業が不要となるほか、固定に必要な部材も不要にできる。 The first combustion chamber and the second combustion chamber are separated by a cup member that forms the second combustion chamber, but fixing the second combustion chamber is unnecessary by allowing the second combustion chamber to move. In addition, members necessary for fixing can be eliminated.
カップ部材は、第１燃焼室と第２燃焼室を分離するものであるから、第１燃焼室内のガス発生剤（第１ガス発生剤）の燃焼により生成された燃焼生成物により、第２燃焼室内の第２ガス発生剤が着火燃焼することを防止する機能を有するものである。なお、このような着火防止機能を高めるため、軽量化の課題を解決できる範囲内でカップ部材の材質や厚みを調整したり、カップ部材の周囲に不燃性の断熱部材を配置してもよい。 Since the cup member separates the first combustion chamber and the second combustion chamber, the second combustion is caused by the combustion product generated by the combustion of the gas generating agent (first gas generating agent) in the first combustion chamber. The second gas generating agent in the room has a function of preventing ignition and combustion. In order to enhance such an ignition prevention function, the material and thickness of the cup member may be adjusted within a range in which the problem of weight reduction can be solved, or a nonflammable heat insulating member may be disposed around the cup member.
本発明は、課題の他の解決手段として、 前記カップ部材が、ハウジング内に圧入され、下端部に閉塞状態の貫通孔を有するものであり、前記貫通孔が、前記カップ部材が第２点火手段の作動により移動したときに開放され、第２燃焼室で発生したガスの排出経路を形成するものである、請求項１記載のエアバッグ用ガス発生器を提供する。 According to another aspect of the present invention, the cup member is press-fitted into a housing and has a closed through hole at a lower end, and the through hole is a second ignition means. The gas generator for an air bag according to claim 1, which is opened when moved by the operation of, and forms a discharge path for the gas generated in the second combustion chamber.
このようにカップ部材に貫通孔を設けることにより、第２点火手段が作動したときのガス排出経路の形成が容易になる。 By providing the through hole in the cup member in this manner, it is easy to form a gas discharge path when the second ignition means is activated.
本発明は、課題の他の解決手段として、第２点火手段が第２点火器と第２点火器カラーとの組み合わせからなるものであり、前記第２点火器カラーにカップ部材の開口部側が嵌め込まれることで、前記カップ部材が位置決めされ、かつ前記カップ部材の貫通孔が閉塞されている、請求項２記載のエアバッグ用ガス発生器を提供する。 In another aspect of the present invention, the second igniter comprises a combination of a second igniter and a second igniter collar, and the opening side of the cup member is fitted into the second igniter collar. Thus, the airbag gas generator according to claim 2, wherein the cup member is positioned and a through hole of the cup member is closed.
このように第２点火器カラーを利用することで、カップ部材の位置決めができると共に、第２点火手段の作動前に貫通孔を閉塞できる。本発明では、カップ部材は、第２点火手段の作動により移動するものであるため、ハウジング等に固定する必要はない。 Thus, by using the second igniter collar, the cup member can be positioned and the through hole can be closed before the second ignition means is actuated. In the present invention, since the cup member is moved by the operation of the second ignition means, it is not necessary to fix it to the housing or the like.
本発明は、課題の他の解決手段として、カップ部材の開口部周縁がハウジング底面に当接され、前記カップ部材天井面と前記ハウジング天井面との間に間隙が存在しており、第２点火手段の作動により、前記カップ部材天井面が前記ハウジング天井面に当接するように上昇して、第２燃焼室で発生したガスの排出経路を形成するものである、請求項１〜３のいずれかに記載のエアバッグ用ガス発生器を提供する。 According to another aspect of the present invention, the peripheral edge of the opening of the cup member is in contact with the bottom surface of the housing, and there is a gap between the ceiling surface of the cup member and the ceiling surface of the housing. The operation of the means causes the cup member ceiling surface to rise so as to abut against the housing ceiling surface to form a discharge path for gas generated in the second combustion chamber. The gas generator for airbags as described in 1. is provided.
カップ部材の移動状態が限定されることにより、カップ部材の移動により、ガス発生器によるガス排出動作を阻害することがなくなる。 By limiting the movement state of the cup member, the movement of the cup member does not hinder the gas discharge operation by the gas generator.
本発明は、課題の他の解決手段として、第２燃焼室が第１燃焼室内にあり、第１燃焼室内には、第１点火器と第１点火器カラーとの組み合わせからなる第１点火手段が配置されており、前記第１点火器カラーと第２点火器カラーの間にカップ部材の周面の一部が挟まれている、請求項１〜４のいずれかに記載のエアバッグ用ガス発生器を提供する。 As another means for solving the problem, the present invention has a second combustion chamber in the first combustion chamber, and the first combustion chamber has a first ignition means comprising a combination of a first igniter and a first igniter collar. The gas for airbags in any one of Claims 1-4 by which one part of the surrounding surface of the cup member is pinched | interposed between the said 1st igniter collar and the 2nd igniter collar. Provide a generator.
このようにしてカップ部材を挟み込むことで、作動前にカップ部材が移動することの防止作用が高められる。 By sandwiching the cup member in this way, the effect of preventing the cup member from moving before operation is enhanced.
本発明のエアバッグ用ガス発生器は、構造が簡略化されているため、製造工程も簡略化でき、全体を軽量化できる。 Since the structure of the gas generator for an air bag according to the present invention is simplified, the manufacturing process can be simplified, and the overall weight can be reduced.
図１により、本発明の実施の形態を説明する。図１は、エアバッグ用ガス発生器の軸方向断面図である。 An embodiment of the present invention will be described with reference to FIG. FIG. 1 is an axial sectional view of a gas generator for an air bag.
エアバッグ用ガス発生器１０は、ディフューザシェル１２とクロージャシェル１３とが接合一体化されたハウジング１１により、外殻が形成されている。ディフューザシェル１２とクロージャシェル１３は、接合部において溶接されている。 In the gas generator 10 for an airbag, an outer shell is formed by a housing 11 in which a diffuser shell 12 and a closure shell 13 are joined and integrated. The diffuser shell 12 and the closure shell 13 are welded at the joint.
ディフューザシェル１２の周面には、複数のガス排出口１４が設けられており、ガス排出口１４は、アルミニウム又はステンレスからなるシールテープ１５で内側から閉塞されている。 A plurality of gas discharge ports 14 are provided on the peripheral surface of the diffuser shell 12, and the gas discharge ports 14 are closed from the inside with a seal tape 15 made of aluminum or stainless steel.
クロージャシェル１３の底面には２つの穴が設けられ、それぞれに第１点火手段２１と第２点火手段２５が、外部雰囲気からの湿気の侵入が防止できるように嵌め込まれている。 Two holes are provided in the bottom surface of the closure shell 13, and the first ignition means 21 and the second ignition means 25 are fitted in the respective holes so as to prevent moisture from entering from the outside atmosphere.
第１点火手段２１は、第１点火器カラー２２に固定された第１点火器２３を有しており、第１点火器２３から延ばされた２本の導電ピン２４の部分に、リードワイヤを有するコネクタが嵌め込まれ、バッテリーに接続される。 The first igniting means 21 has a first igniter 23 fixed to the first igniter collar 22, and a lead wire is connected to a portion of the two conductive pins 24 extended from the first igniter 23. Is inserted and connected to the battery.
第２点火手段２５は、第２点火器カラー２６に固定された第２点火器２７を有しており、第２点火器２７から延ばされた２本の導電ピン２８の部分に、リードワイヤを有するコネクタが嵌め込まれ、バッテリーに接続される。第２点火器カラー２６は、大径部２６ａと小径部２６ｂとを有している。 The second igniting means 25 has a second igniter 27 fixed to the second igniter collar 26, and a lead wire is formed on the two conductive pins 28 extending from the second igniter 27. Is inserted and connected to the battery. The second igniter collar 26 has a large diameter portion 26a and a small diameter portion 26b.
ハウジング１１内には、第１燃焼室３１と第２燃焼室３５が設けられており、第２燃焼室３５はカップ部材４１により第１燃焼室３１と分離されている。図１では、第２燃焼室３５は第１燃焼室３１に内包された状態であるが、第１燃焼室３１と第２燃焼室３５が隣接する状態であってもよい。第１燃焼室３１内には図示していない第１ガス発生剤が充填され、第２燃焼室３５内には図示していない第２ガス発生剤が充填されている。 A first combustion chamber 31 and a second combustion chamber 35 are provided in the housing 11, and the second combustion chamber 35 is separated from the first combustion chamber 31 by a cup member 41. In FIG. 1, the second combustion chamber 35 is included in the first combustion chamber 31, but the first combustion chamber 31 and the second combustion chamber 35 may be adjacent to each other. The first combustion chamber 31 is filled with a first gas generating agent (not shown), and the second combustion chamber 35 is filled with a second gas generating agent (not shown).
第２燃焼室３５を形成するカップ部材４１は、カップ部材４１の内径よりも大きな外径を有する第２点火器カラー２６の大径部２６ａに圧入されている。このようにカップ部材４１を大径部２６ａに圧入することで、カップ部材４１の位置決めがされ、軸方向及び半径方向への移動が阻止される。 The cup member 41 that forms the second combustion chamber 35 is press-fitted into the large-diameter portion 26 a of the second igniter collar 26 that has an outer diameter larger than the inner diameter of the cup member 41. Thus, the cup member 41 is positioned by press-fitting the cup member 41 into the large-diameter portion 26a, and movement in the axial direction and the radial direction is prevented.
更にカップ部材４１の周面の一部は、第２点火器カラー２６と第１点火器カラー２１に挟み込まれた状態になっているため、作動前にカップ部材４１が半径方向及び軸方向に移動し難くなる。その他、必要に応じて、カップ部材４１の開口部周縁の全部又は一部をかしめて、第１点火器カラー２６に固定することもできる。 Furthermore, since a part of the peripheral surface of the cup member 41 is sandwiched between the second igniter collar 26 and the first igniter collar 21, the cup member 41 moves in the radial direction and the axial direction before operation. It becomes difficult to do. In addition, if necessary, all or part of the periphery of the opening of the cup member 41 may be caulked and fixed to the first igniter collar 26.
カップ部材４１の開口部周縁はクロージャシェル１３の底面１３ａに当接されており、天井面４３とディフューザシェル１２の天井面１２ａとの間には間隙が存在している。 The peripheral edge of the opening of the cup member 41 is in contact with the bottom surface 13 a of the closure shell 13, and a gap exists between the ceiling surface 43 and the ceiling surface 12 a of the diffuser shell 12.
カップ部材４１は、開口部に近い周面に複数の貫通孔４２を有しており、複数の貫通孔４２は、第２点火器カラー２６の大径部２６ａの周面に当接された状態になっているため、閉塞状態にある。 The cup member 41 has a plurality of through holes 42 on the peripheral surface close to the opening, and the plurality of through holes 42 are in contact with the peripheral surface of the large-diameter portion 26 a of the second igniter collar 26. Because it is, it is in a closed state.
第１燃焼室３１内には、第１ガス発生剤の充填量に応じて、第１燃焼室３１の容積を調整するためのリテーナ３２が嵌め込まれている。リテーナ３２は、カップ部材４１の天井面４３と正対する部分に穴３３を有している、前記の穴３３の径はカップ部材４１の外径よりも充分に大きくなるように設定されている。 A retainer 32 for adjusting the volume of the first combustion chamber 31 is fitted in the first combustion chamber 31 in accordance with the filling amount of the first gas generating agent. The retainer 32 has a hole 33 at a portion facing the ceiling surface 43 of the cup member 41, and the diameter of the hole 33 is set to be sufficiently larger than the outer diameter of the cup member 41.
第１燃焼室３１の外側には、燃焼ガスの濾過及び冷却機能を有する筒状のクーラントフィルタ４５が配置されており、クーラントフィルタ４５の外周面とガス排出口１４及びシールテープ１５の間には間隙が設けられている。 A cylindrical coolant filter 45 having a function of filtering and cooling combustion gas is disposed outside the first combustion chamber 31, and between the outer peripheral surface of the coolant filter 45 and the gas discharge port 14 and the seal tape 15. A gap is provided.
次に、図１のエアバッグ用ガス発生器を自動車のエアバッグシステムに適用した場合のの動作を説明する。なお、第１点火器２３と第２点火器２７は、衝突時において自動車が受ける衝撃の程度に応じて、第１点火器２３のみが作動する場合、第１点火器２３が先に作動して第２点火器２７が遅れて作動する場合、第１点火器２３と第２点火器２７が同時に作動する場合があるが、以下においては、第１点火器２３が先に作動して第２点火器２７が遅れて作動する場合について説明する。 Next, the operation when the gas generator for an air bag of FIG. 1 is applied to an air bag system of an automobile will be described. The first igniter 23 and the second igniter 27 are configured so that the first igniter 23 operates first when only the first igniter 23 operates according to the degree of impact received by the automobile at the time of the collision. When the second igniter 27 operates with a delay, the first igniter 23 and the second igniter 27 may operate at the same time. However, in the following, the first igniter 23 operates first and the second ignition The case where the device 27 operates with a delay will be described.
自動車が衝突して衝撃を受けたとき、コントロールユニットからの作動信号を受け、第１点火器２３が作動点火して第１ガス発生剤を燃焼させ、高温の燃焼ガスを発生させる。燃焼ガスは、クーラントフィルタ４５を通って濾過及び冷却された後、シールテープ１５を破り、ガス排出口１４から排出され、エアバッグを膨張させる。このとき、第２燃焼室３５はカップ部材４１で囲まれ、貫通孔４２は閉塞状態にあるため、第１燃焼室３１で発生した燃焼ガスが第２燃焼室３５内に流入することがない。 When the automobile collides and receives an impact, the operation signal from the control unit is received, and the first igniter 23 is activated and ignited to combust the first gas generating agent and generate high-temperature combustion gas. The combustion gas is filtered and cooled through the coolant filter 45, then breaks the seal tape 15, is discharged from the gas discharge port 14, and inflates the airbag. At this time, since the second combustion chamber 35 is surrounded by the cup member 41 and the through hole 42 is in a closed state, the combustion gas generated in the first combustion chamber 31 does not flow into the second combustion chamber 35.
僅かに遅れて第２点火器２７が作動点火して第２ガス発生剤を燃焼させ、高温の燃焼ガスを発生させる。そして、高温の燃焼ガスに押圧され、第１燃焼室３５を形成するカップ部材４１が上昇し、その天井面４３が穴３３を通り、ディフューザシェル天井面１２ａに当接した状態になる。 The second igniter 27 is activated and ignited with a slight delay to burn the second gas generating agent and generate high-temperature combustion gas. Then, the cup member 41 forming the first combustion chamber 35 is pushed up by the high-temperature combustion gas, and the ceiling surface 43 passes through the hole 33 and comes into contact with the diffuser shell ceiling surface 12a.
このとき、貫通孔４２も上昇して、大径部２６ａに当接した状態から、小径部２６ｂと正対する状態になる。このため、貫通孔４２と小径部２６ｂの周面との間には、大径部２６ａと小径部２６ｂとの径の差に相当する隙間が存在することになり、貫通孔４２は閉塞状態から脱し、開放状態となるから、ガス排出経路が確保できる。 At this time, the through hole 42 is also lifted, and is brought into a state of facing the small diameter portion 26b from the state in contact with the large diameter portion 26a. For this reason, a gap corresponding to the difference in diameter between the large-diameter portion 26a and the small-diameter portion 26b exists between the through-hole 42 and the peripheral surface of the small-diameter portion 26b. Since it is removed and opened, a gas discharge path can be secured.
なお、カップ部材４１の天井面４３とディフューザシェル１２の天井面１２ａとの間隔と、カップ部材４１の高さを調整することにより、貫通孔４２を設けていない場合でも、カップ部材４１の開口部周縁が第２点火器カラー２６の小径部２６ｂに正対するように上昇するようにすれば、ガス排出経路は確保できる。 Even if the through hole 42 is not provided by adjusting the distance between the ceiling surface 43 of the cup member 41 and the ceiling surface 12a of the diffuser shell 12 and the height of the cup member 41, the opening of the cup member 41 is provided. If the periphery rises so as to face the small diameter portion 26b of the second igniter collar 26, a gas discharge path can be secured.
その後、第２燃焼室３５内の燃焼ガスは、貫通孔４２を通って流出し、クーラントフィルタ４５を通って濾過及び冷却された後、ガス排出口１４から排出され、更にエアバッグを膨張させる。 Thereafter, the combustion gas in the second combustion chamber 35 flows out through the through hole 42, is filtered and cooled through the coolant filter 45, is discharged from the gas discharge port 14, and further inflates the airbag.
１０ エアバッグ用ガス発生器
１１ ハウジング
１４ ガス排出口
２２ 第１点火器カラー
２３ 第１点火器
２６ 第２点火器カラー
２７ 第２点火器
３１ 第１燃焼室
３５ 第２燃焼室
４１ カップ部材
４２ 貫通孔
DESCRIPTION OF SYMBOLS 10 Gas generator for airbags 11 Housing 14 Gas exhaust port 22 1st igniter collar 23 1st igniter 26 2nd igniter collar 27 2nd igniter 31 1st combustion chamber 35 2nd combustion chamber 41 Cup member 42 Through Hole
Claims (5)
前記第２燃焼室が、前記ハウジング内に配置されたカップ部材で第１燃焼室と分離され、前記カップ部材内には第２ガス発生剤と第２点火手段が配置されており、
前記カップ部材が前記第２点火手段の作動により移動して、前記第２燃焼室で発生したガスの排出経路を形成するものである、エアバッグ用ガス発生器。 A first combustion chamber and a second combustion chamber each having a unique gas generating agent and ignition means disposed in a housing having a gas discharge port;
The second combustion chamber is separated from the first combustion chamber by a cup member disposed in the housing, and a second gas generating agent and a second ignition means are disposed in the cup member.
A gas generator for an air bag, wherein the cup member is moved by the operation of the second ignition means to form a discharge path for the gas generated in the second combustion chamber.
前記貫通孔が、前記カップ部材が第２点火手段の作動により移動したときに開放され、第２燃焼室で発生したガスの排出経路を形成するものである、請求項１記載のエアバッグ用ガス発生器。 The cup member is press-fitted into the housing and has a closed through hole at the lower end,
The airbag gas according to claim 1, wherein the through hole is opened when the cup member is moved by the operation of the second ignition means, and forms a discharge path for the gas generated in the second combustion chamber. Generator.
The second combustion chamber is in the first combustion chamber, and in the first combustion chamber, a first ignition means comprising a combination of a first igniter and a first igniter collar is disposed, and the first igniter collar The gas generator for airbags in any one of Claims 1-4 with which a part of peripheral surface of the cup member is pinched | interposed between the 2nd igniter collar.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005067383A JP4584742B2 (en) | 2005-03-10 | 2005-03-10 | Gas generator for airbag |
| DE102006011016.1A DE102006011016B4 (en) | 2005-03-10 | 2006-03-09 | Gas generator for an airbag |
| US11/370,867 US7487995B2 (en) | 2005-03-10 | 2006-03-09 | Gas generator for air bag |
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| JP2005067383A JP4584742B2 (en) | 2005-03-10 | 2005-03-10 | Gas generator for airbag |
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| JP2006248372A true JP2006248372A (en) | 2006-09-21 |
| JP4584742B2 JP4584742B2 (en) | 2010-11-24 |
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| JP2005067383A Expired - Fee Related JP4584742B2 (en) | 2005-03-10 | 2005-03-10 | Gas generator for airbag |
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| DE (1) | DE102006011016B4 (en) |
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| US8409496B2 (en) | 2009-09-14 | 2013-04-02 | United Technologies Corporation | Superplastic forming high strength L12 aluminum alloys |
| US8409497B2 (en) | 2009-10-16 | 2013-04-02 | United Technologies Corporation | Hot and cold rolling high strength L12 aluminum alloys |
| US8728389B2 (en) | 2009-09-01 | 2014-05-20 | United Technologies Corporation | Fabrication of L12 aluminum alloy tanks and other vessels by roll forming, spin forming, and friction stir welding |
| US8778099B2 (en) | 2008-12-09 | 2014-07-15 | United Technologies Corporation | Conversion process for heat treatable L12 aluminum alloys |
| US8778098B2 (en) | 2008-12-09 | 2014-07-15 | United Technologies Corporation | Method for producing high strength aluminum alloy powder containing L12 intermetallic dispersoids |
| US9127334B2 (en) | 2009-05-07 | 2015-09-08 | United Technologies Corporation | Direct forging and rolling of L12 aluminum alloys for armor applications |
| US9194027B2 (en) | 2009-10-14 | 2015-11-24 | United Technologies Corporation | Method of forming high strength aluminum alloy parts containing L12 intermetallic dispersoids by ring rolling |
| JP2015232864A (en) * | 2014-06-11 | 2015-12-24 | 株式会社ダイセル | Smoke screen generator and method of using same |
| US9611522B2 (en) | 2009-05-06 | 2017-04-04 | United Technologies Corporation | Spray deposition of L12 aluminum alloys |
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| DE102008049652B4 (en) | 2008-09-30 | 2023-12-14 | Zf Airbag Germany Gmbh | Gas generator with movable overflow opening |
| DE202019105183U1 (en) | 2019-09-18 | 2019-10-29 | Dimitri Mirnyj | A plastic bag for an airbag system |
| DE102019131394A1 (en) * | 2019-11-21 | 2021-05-27 | Zf Airbag Germany Gmbh | GAS GENERATOR FOR A VEHICLE SAFETY SYSTEM, METHOD FOR OPERATING A GAS GENERATOR |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8778099B2 (en) | 2008-12-09 | 2014-07-15 | United Technologies Corporation | Conversion process for heat treatable L12 aluminum alloys |
| US8778098B2 (en) | 2008-12-09 | 2014-07-15 | United Technologies Corporation | Method for producing high strength aluminum alloy powder containing L12 intermetallic dispersoids |
| US9611522B2 (en) | 2009-05-06 | 2017-04-04 | United Technologies Corporation | Spray deposition of L12 aluminum alloys |
| US9127334B2 (en) | 2009-05-07 | 2015-09-08 | United Technologies Corporation | Direct forging and rolling of L12 aluminum alloys for armor applications |
| US8728389B2 (en) | 2009-09-01 | 2014-05-20 | United Technologies Corporation | Fabrication of L12 aluminum alloy tanks and other vessels by roll forming, spin forming, and friction stir welding |
| US8409496B2 (en) | 2009-09-14 | 2013-04-02 | United Technologies Corporation | Superplastic forming high strength L12 aluminum alloys |
| US9194027B2 (en) | 2009-10-14 | 2015-11-24 | United Technologies Corporation | Method of forming high strength aluminum alloy parts containing L12 intermetallic dispersoids by ring rolling |
| US8409497B2 (en) | 2009-10-16 | 2013-04-02 | United Technologies Corporation | Hot and cold rolling high strength L12 aluminum alloys |
| JP2015232864A (en) * | 2014-06-11 | 2015-12-24 | 株式会社ダイセル | Smoke screen generator and method of using same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4584742B2 (en) | 2010-11-24 |
| DE102006011016B4 (en) | 2021-05-20 |
| DE102006011016A1 (en) | 2006-09-14 |
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