WO2001074633A1 - Generateur de gaz - Google Patents

Generateur de gaz Download PDF

Info

Publication number
WO2001074633A1
WO2001074633A1 PCT/JP2001/002857 JP0102857W WO0174633A1 WO 2001074633 A1 WO2001074633 A1 WO 2001074633A1 JP 0102857 W JP0102857 W JP 0102857W WO 0174633 A1 WO0174633 A1 WO 0174633A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
housing
filter
gas passage
chamber
Prior art date
Application number
PCT/JP2001/002857
Other languages
English (en)
Japanese (ja)
Inventor
Takeshi Ishida
Yoshiyuki Kishino
Masahiro Yoshida
Original Assignee
Nippon Kayaku Kabushiki-Kaisha
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Kayaku Kabushiki-Kaisha filed Critical Nippon Kayaku Kabushiki-Kaisha
Priority to AU2001248738A priority Critical patent/AU2001248738A1/en
Priority to JP2001572341A priority patent/JP4813735B2/ja
Publication of WO2001074633A1 publication Critical patent/WO2001074633A1/fr

Links

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

Definitions

  • the present invention relates to a gas generator suitable for inflating and deploying an airbag for side collision or for a passenger seat.
  • FIG. 5 An example of a gas generator for inflating and deploying a side collision or passenger airbag is shown in FIG.
  • the gas generator shown in FIG. 5 mainly inflates and deploys an airbag for side collision, and has a long cylindrical housing 51. Inside the housing 51, a combustion chamber 53 and a cooling filtration chamber 54 are formed in the axial direction of the housing 51 by a partition ring member 52. The inside of the combustion chamber 53 is loaded with a gas generating agent 55 that generates high-temperature gas by combustion, and the cooling filtration chamber 54 is a cylindrical filter that collects and cools high-temperature gas slag. Materials 56 are installed. Further, an ignition means 57 for injecting a flame into the combustion chamber 53 is mounted on the shaft end of the housing 51.
  • the ignition means 57 is energized and ignited by a collision signal from a collision sensor, a flame is ejected into the combustion chamber 53, and the gas generating agent 55 is ignited and burned, thereby producing a large amount of gas. Generates hot gas rapidly.
  • the high-temperature gas generated in the combustion chamber 53 ruptures the rupture plate 58 of the partition ring member 52 at a predetermined internal pressure of the combustion chamber 53, passes through the partition ring member 52, and passes through the filter material of the cooling filtration chamber 54. 5 6 Spilled inside. Then, the high-temperature gas flows into the filter material 56, where it is collected and cooled, and is discharged from the gas discharge holes 51 a of the housing 51 into the airbag.
  • the airbag is inflated and deployed rapidly by a large amount of clean gas released from each gas discharge hole 51a.
  • the conventional gas generator In the conventional gas generator, after the rupture plate 58 is ruptured at a predetermined internal pressure of the combustion chamber 52, the high-temperature gas generated in the combustion chamber 53 flows out into the space inside the filter material 56. Therefore, the high-temperature gas flows intensively from the part of the filter material 56 on the side of the partition ring material 52, and it is necessary to increase the strength of the filter material 56 in this part. Luther material 5 6 cannot be used effectively. For this reason, in the conventional gas generator, it is necessary to increase the size of the filter material 56 in order to sufficiently collect and cool the slag of the hot gas, and as a result, the gas generator becomes large-sized and heavy. .
  • An object of the present invention is to provide a gas generator that can effectively use the entire filter material and that can be reduced in size and weight. Disclosure of the invention
  • the gas generator (Claim 1) of the present invention includes a long cylindrical housing. Inside the housing, a combustion chamber, a cylindrical filter material, and a gas passage chamber are provided sequentially in the axial direction. A gas generating agent is loaded in the combustion chamber, and a plurality of gas discharge holes communicating with the air bag are opened in the gas passage chamber.
  • the housing is equipped with ignition means for igniting and burning the gas generating agent in the combustion chamber.
  • the combustion chamber, the cylindrical filter agent, and the gas passage chamber can be communicated with the same diameter, which is the diameter of the nozzle.
  • the hot gas generated in the combustion chamber, Te Hirogatsu the entire combustion chamber, also c will flow from the entire axial end of the filter material in the filter material, the hot gas throughout in the filter material Flow, here sura After being collected and cooled, it is discharged into the gas passage chamber as clean gas. This makes it possible to effectively collect and cool the slag of the hot gas by effectively using the entire filter material.
  • the slag can be collected and cooled by using the entire filter material effectively, high-temperature gas can be collected and cooled.
  • the slag collection and cooling effects of the filter material can be secured.
  • the effect of the slag collection and cooling is due to the thickness of the filter material through which the hot gas passes, and by securing the thickness by the length of the filter material, the filter material can be reduced in diameter. Can be something. Therefore, it is possible to reduce the size and weight of the gas generator.
  • the gas generator (Claim 2) of the present invention includes a long cylindrical housing. Inside the housing, a combustion chamber, a cylindrical filter material, and a gas passage chamber are provided sequentially in the axial direction. A gas generating agent is loaded in the combustion chamber, and a plurality of gas discharge holes communicating with the airbag are opened in the gas passage chamber.
  • the housing is equipped with ignition means for igniting and burning the gas generating agent in the combustion chamber.
  • the rupture plate seals a portion of each gas discharge hole in the gas passage chamber from the gas generating agent.
  • the combustion chamber, the cylindrical filter material, and the gas passage chamber can be communicated with the same diameter, which is the inner diameter of the housing. Therefore, the high-temperature gas generated in the combustion chamber spreads throughout the combustion chamber and flows into the finoletter material from the entire shaft end of the filter material c. After passing through the slag, it is collected and cooled, and is discharged as clean gas into the gas passage chamber. This makes it possible to effectively use the entire filter material to collect hot gas slag and Cooling can be sufficiently performed.
  • the clean gas that has flowed into the gas passage chamber is homogenized in the gas passage chamber until the rupture plate ruptures, and when the rupture plate ruptures, is discharged from each gas discharge hole into the airbag.
  • the amount of gas discharged from each gas discharge hole into the airbag can be made uniform.
  • the gas generating agent is sealed from the gas discharge holes, it is possible to prevent the gas generating agent from being deteriorated due to moisture absorption or the like.
  • the slag can be collected and cooled by using the entire filter material effectively, high-temperature gas can be collected and cooled.
  • the effect of the slag collection and cooling is due to the thickness of the filter material through which the high-temperature gas passes.By securing the thickness by the length of the filter material, the filter material can be reduced in diameter. it can. Therefore, it is possible to reduce the size and weight of the gas generator.
  • the gas passage chamber is provided with a partition member and a filter side communicating with the filter material and an opening of each gas discharge hole. And the gas discharge side.
  • each gas discharge hole is sealed from the filter side of the gas passage chamber.
  • each gas discharge hole can be sealed from one side of the filter of the gas passage chamber only by mounting the partition member, whose opening hole is closed by the rupture plate, in the housing.
  • gas generators that inflate and deploy airbags for side collisions have small diameter housings, so it is difficult to attach a rupture plate to the inner periphery of the housing and close each gas discharge hole. Becomes Therefore, Each gas discharge hole is sealed from the filter side of the gas passage chamber by a simple operation of mounting the cutting member in the housing.
  • the clean gas that has flowed out of the filter material is homogenized on the filter side of the gas passage chamber, and when the rupture plate that closes the opening of the partition member ruptures, the gas from the gas discharge side of the gas passage chamber It is discharged into the airbag through each gas discharge hole.
  • the other shaft end of the housing has a hemispherical shape that protrudes outside the housing and is closed.
  • a discharge hole is formed in a hemispherical part.
  • the gas passage chamber is divided into a filter side and a gas discharge side by contacting the partition member with a hemispherical portion from the filter material side.
  • the partitioning member can be positioned by inserting it into the housing and abutting on the hemispherical portion. Therefore, each gas discharge hole can be sealed from the filter side of the gas passage chamber by a simple operation.
  • the gas generator according to Claim 3 or Claim 4 is provided with a filter at one side of the gas passage chamber. It is provided with a filter supporting material that supports one material to the combustion chamber side in a biasable manner.
  • FIG. 1 is a sectional view showing an example of the gas generator of the present invention.
  • FIG. 2 is a sectional view taken along line AA of FIG.
  • FIG. 3 is a sectional view taken along line BB of FIG.
  • FIG. 4 is a sectional view of a main part showing a modification of the gas generator of the present invention.
  • FIG. 5 is a cross-sectional view showing a conventional gas generator.
  • the gas generator S shown in FIGS. 1 and 2 mainly inflates and deploys an air bag for side collision, and has a long cylindrical housing 1, a cylindrical filter material 2, and a housing 1.
  • the gas passage chamber 4 ⁇ is divided into a filter side C and a gas discharge side D by a partition member 16, and the finoletter side C and the gas discharge side D of the partition member 16 are communicated.
  • a filter-one support member 18 for supporting the filter material 2 is provided on one filter side C of the gas passage chamber 4.
  • the housing 1 is composed of an outer cylinder 7 whose one end is closed, and a holder 8 that closes the opening 9 of the outer cylinder 7.
  • the housing 1 has a sealed space P formed by fitting the holder 8 into the opening 9 in the outer cylinder 7 and drawing around the outer periphery of the opening 9 of the outer cylinder 7. It is a structure to do.
  • an annular projection 9a is formed by projecting the opening side 9 of the outer cylindrical member 7 into the annular groove 10 ° of the holder 8.
  • the annular protrusion 9a is fitted along the shape of the annular groove 10 to fit the elastic ring 11 in the annular groove 10 into elastic contact with the ⁇ -shaped groove 10.
  • the outer cylinder 7 is preferably formed of a steel material such as stainless steel having excellent heat resistance and pressure resistance.
  • the bottom 12 of the outer tube 7 is formed in a hemispherical shape that protrudes outward in the axial direction of the housing 1 so as not to protrude from the outer periphery of the outer tube 7.
  • a hemispherical bottom 12 is integrally formed by performing a deep drawing press working on a steel plate such as stainless steel.
  • the outer cylinder 7 has a plurality of gas discharge holes 7a communicating the sealed space P and the inside of the airbag.
  • Each gas discharge hole 7a is formed in a hemispherical portion that is the bottom 12 of the outer member 7, and is opened into the gas passage chamber 4 at predetermined intervals around the hemisphere (see FIG. 2). .
  • the holder 8 is preferably formed of a steel material such as stainless steel having excellent heat resistance and pressure resistance.
  • the filter material 2 is formed into a column shape by, for example, an aggregate of a knitted metal net, a plain woven metal net, and a crimp woven metal wire.
  • the finale letter material 2 is inserted closely into the inner periphery of the housing 1, and is arranged at a middle portion of the housing 1 in the axial direction.
  • the combustion chamber 3 is formed between the shaft end 2a of the filter material 2 on the holder 8 side and the holder 8 on one shaft end side of the housing 1. Further, a gas passage chamber 4 is formed between the other shaft end 2 b of the filter material 2 and the bottom 12 of the outer cylindrical member 7 on the other shaft end side of the housing 1.
  • the combustion chamber 3, the columnar filter material 2, and the gas passage chamber 4 are communicated in the axial direction of the housing 1 with the same diameter as the inside diameter of the housing 1.
  • the filter material 2 is positioned at a middle position of the housing 1 by drawing around the outer periphery of the outer cylinder 7.
  • two annular projections 31 and 32 are formed by projecting the outer cylinder 7 into the combustion chamber 3 and the gas passage chamber 4.
  • the annular projection 31 is in contact with the filter material 2 while deforming the shaft end 2a side of the filter material.
  • the annular protrusion 32 is in contact with the shaft end 2 b of the filter material 2.
  • the luter member 2 is supported so as to be sandwiched by the respective annular projections 31 and 32, and is positioned at a middle position of the housing 1.
  • the gas generating agent 5 generates a high-temperature gas by combustion.
  • the gas generating agent 5 is charged over the entire inside of the combustion chamber 3 in a state of being in contact with the shaft end 2a of the filter material.
  • a gas generating agent containing a nitrogen-containing organic compound such as a tetrazole or an azodicarbonamide having little toxicity before and after combustion as a fuel component can be used.
  • the gas generating agent 5 is protected by the cushion material 25.
  • the cushion material 25 is mounted between the gas generating agent 5 in the combustion chamber 3 and the pressing member 26 of the holder 8 to prevent the gas generating agent 5 from being powdered due to vibration. Further, the cushion material 25 is provided with a cross-shaped notch for transmitting the power of the flame from the ignition means 6 to the gas generating agent 5 without delay. It is preferable that the cushion material 25 be formed using a flexible material such as silicone rubber or silicon foam.
  • the ignition means 6 is composed of only an igniter that energizes and ignites, and is attached to the holder 8 from inside the housing 1. Further, the ignition means 6 protrudes toward the combustion chamber 3 and is in contact with the cushion material 25 through the holding material 26. The ignition means 6 is energized and fired based on a collision signal from a collision sensor, and ejects a flame into the combustion chamber 3 to forcibly ignite and burn the gas generating agent 5 in the combustion chamber 3.
  • a partition member 16 In the gas passage chamber 4 of the housing 1, a partition member 16, a rupture plate 17 and a filter support member 18 are mounted.
  • the partition member 16 is fitted into the gas passage chamber 4 in close contact with the inner periphery of the outer tubular member 7.
  • the partition member 16 is in contact with a hemispherical portion, which is the bottom 12 of the outer cylinder member 7, and is positioned on the filter material 2 side from each gas discharge hole 7a.
  • the partition member 16 converts the gas passage chamber 4 ⁇ into the finoletter material 2. It is divided into a continuous filter side C and a gas discharge side D where each gas discharge hole 7a opens.
  • the partition member 16 has an opening hole 19 communicating the filter side C and the gas discharge side D of the gas passage chamber 4.
  • a seal ring 20 is attached to the outer periphery of the partition member 16 so as to be in elastic contact with the inner periphery of the outer tubular member 7. Further, the partition member 16 is provided with a finoletter support member 18 described later on the filter side C, and by restricting the movement of the filter support member 18, the finoletter support member 18 is interposed. It also plays a role in regulating the movement of the filter material 2.
  • the rupture plate 17 is adhered to the partition member 16 from the gas discharge side D of the gas passage chamber 4 to close the opening hole 19 of the partition member 16. Thus, the rupture plate 17 seals each gas discharge hole 7 a from the filter side C of the gas passage chamber 4.
  • the rupture plate 17 is formed of, for example, a metal foil such as aluminum, and is ruptured at a predetermined internal pressure of the housing 1 to communicate each gas discharge hole 7 a to the filter side C of the gas passage chamber 4.
  • the filter support member 18 is formed in a circular plate shape, and is fitted on the inner periphery of the outer cylinder 7 on the filter side C of the gas passage chamber 4. This filter support member 18 is in contact with the partition member 16.
  • the filter support member 18 is formed with a hemispherical panel panel 21 that projects toward the filter member 2 of the gas passage chamber 4 and abuts against the shaft end 2 b of the filter member 2. .
  • the plate spring 21 has a plurality of gas passage holes 21 a communicating the filter material 2 and the opening holes 19 of the partition member 16. Each gas passage hole 21a opens over the hemispherical shape of the leaf spring 21 [see FIG. 3].
  • the filter support member 18 is preferably formed at low cost by pressing a punched metal plate having a plurality of gas passage holes 21a.
  • the filter support 18 is now separated from the filter material by the leaf spring 21. 2 to prevent the filter material 2 from jumping out to the gas passage chamber 4 side. Next, the operation of the gas generator S will be described.
  • the gas generator S When the collision sensor detects the collision of the vehicle, the gas generator S energizes and ignites the ignition means 6. The flame of the igniting means 6 ruptures and opens the cushion material 25, and then squirts into the combustion chamber 3 to forcibly ignite and burn the gas generating agent 5, thereby generating a high-temperature gas.
  • the high-temperature gas generated in the combustion chamber 3 spreads throughout the combustion chamber 3 and flows into the filter material 2 from the entire shaft end 2 a of the finale letter material 2. Then, the high-temperature gas flows through the entire inside of the filter material 2, and then, through slag collection and cooling, flows out of the entire shaft end 2 b of the filter material 2 to the filter side C of the gas passage chamber 4. At this time, the high-temperature gas is communicated with the combustion chamber 3, the cylindrical filter material 2 and the gas passage chamber 4 as the same diameter as the inner diameter of the housing 1 so that the high-temperature gas flows in the radial direction and circumferential direction of the filter material 2. It flows over the entire direction.
  • the clean gas flowing into the gas passage chamber 4 spreads through the gas passage holes 21a of the filter support member 18 to the whole of the filter side C, where it is made uniform.
  • the internal pressure of the combustion chamber 3, the filter material 2 and the filter side C of the gas passage chamber 4 increases as the amount of gas generated by the combustion of the gas generating agent 5 increases. rises. Then, the finole letter material 2 is affected by the internal pressure of the combustion chamber 3 and the high-temperature gas flowing through the filter material 2 to the gas passage chamber 4 side, so that a force to move to the gas passage chamber 4 side is exerted. . At this time, the movement of the filter material 2 is restricted by the partition member 16 that abuts the filter support member 18 and the filter support member 18 and divides the gas passage chamber 4 into two chambers.
  • the finoleta material 2 is moved to the gas passage chamber 4 under the influence of the maximum pressure from the combustion chamber 3 side and the large amount of high-temperature gas flowing through the filter material 2 to the gas passage chamber 4 side.
  • the power to work works.
  • the axial movement of the filter supporting member 18 is regulated by the partition member 16, so that the leaf spring 21 of the filter supporting member 18 elastically moves with the movement of the filter member 2. It is deformed and urges the filter material 2 toward the combustion chamber 3 by a panel force.
  • the filter support member 18 restricts the filter material 2 from jumping out to the gas passage chamber 4 side.
  • the high-temperature gas generated in the combustion chamber 3 can flow over the entirety of the filter material 2, so that the entire filter material 2 can be effectively used. Slag collection and cooling of hot gas can be performed in + minutes.
  • the slag can be collected and cooled by effectively using the entire filter material 2, so that the length of the filter material 2 is adjusted even if the housing 1 has a small diameter.
  • the effect of the slag collection and cooling is due to the thickness of the filter material 2 through which the high-temperature gas passes, and by securing the thickness by the length of the filter material 2, the filter material 2 Fill without reducing the effectiveness of slag collection and cooling Tar material 2 can be made small. Therefore, the size and weight of the gas generator S can be reduced.
  • each gas discharge hole 7 a can be easily moved from the filter side C of the gas passage chamber 4 by a simple operation. Can be sealed.
  • the housing 1 of the gas generator for inflating and deploying the airbag for side collision has an extremely small diameter. Therefore, it is very difficult to attach the rupture plate 17 to the inner periphery of the housing 1 in order to seal each gas discharge hole 7a from the gas passage chamber 4, and a complicated operation is required.
  • a partition member 16 having the opening hole 19 closed with a rupture plate 17 is prepared, and the partition member 16 is inserted from the opening side 9 of the outer member 7.
  • the partition member 16 can be positioned by simply abutting the hemispherical portion that is the bottom 12 of the outer cylindrical member 7, and each gas discharge hole 7 a can be sealed from the filter side C of the gas passage chamber 4. .
  • the rupture plate 17 is adhered to the inner periphery of the housing 1 to seal each gas discharge hole 7 a from the gas passage chamber 4. That is, a means for sealing each gas discharge hole 7a from the gas passage chamber 4 is appropriately selected according to the diameter of the housing 1.
  • the filter support member 18 can prevent the filter material 2 from jumping out, it is possible to inflate and deploy the airbag with an appropriate rise in the inner temperature without changing the volume of the combustion chamber 3.
  • the partition member 16 is positioned by making the bottom 12 of the outer cylindrical member 7 into a hemispherical shape.
  • the present invention is not limited to this.
  • the configuration shown in FIG. 4 can be adopted.
  • the bottom 12 of the outer cylinder 7 is formed into a bottomed cylindrical shape, and drawing is performed around the outer periphery of the outer cylinder 7 to form an annular projection 35, and the annular projection 35 is formed.
  • the partition member 16 can be positioned by being fitted into the groove 36.
  • FIG. 4 (a) the bottom 12 of the outer cylinder 7 is formed into a bottomed cylindrical shape, and drawing is performed around the outer periphery of the outer cylinder 7 to form an annular projection 35, and the annular projection 35 is formed.
  • the bottom 12 of the outer cylinder 7 is flattened and the vicinity of the bottom 12 of the outer cylinder 7 is curved 46 compared to the one shown in FIG. It is. Then, a gas release hole 7a is formed in the curved surface shape 4'6 of the outer cylindrical member 7.
  • the bottom 12 side of the outer tubular member 7 can be formed into various shapes in addition to those shown in FIGS.
  • the annular projection 32 can prevent the filter material 2 from jumping out to the gas passage chamber 4 side, it is not necessary to provide the filter support member 18. Further, it is preferable that the length of the gas passage chamber 4 in the axial direction and the like of the housing 1 be minimized from the viewpoint of reducing the size of the gas generator S for side collision. For this reason, the thickness of the partition member 16 is set to the minimum thickness at which the seal ring 20 can be mounted, and the size of the gas generator is reduced. Further, by setting the thickness of the partition member 16 to a certain value, the partition member 16 can stably contact the hemispherical portion of the outer cylinder member 7.
  • the partition member 16 is press-fitted into the outer periphery of the outer cylindrical member 7 so that the filter side of the gas passage chamber 4 and the gas discharge side D can be sealed, the use of the seal ring 20 is unnecessary. Thereby, the thickness of the partition member 16 can be reduced.
  • the partition member 16 makes the seal ring 20 elastically contact the hemispherical portion of the outer tube 7, thereby reducing the gas.
  • a structure that seals the filter side C and the gas discharge side D of the passage chamber 4 can also be adopted.
  • the filter supporting member 18 may have a configuration in which the leaf spring 21 is made rigid, the movement of the filter forest 2 is regulated by the rigidity, and the filter material 2 is held on the combustion chamber 3 side.
  • Wire mesh support material It is formed from a wire mesh coarser than the filter material 2 and a crimp-woven metal wire.
  • the wire mesh supporting material supports the filter material 2 in the same manner as the filter supporting material 18 and regulates the filter material 2 from jumping out to the gas passage chamber 4 side.
  • the partition member 16 comes into contact with the inner periphery of the outer cylinder 7 and is positioned at a boundary between the inner periphery of the outer cylinder 7 and the hemispherical shape. .
  • the partition member 16 can be stably positioned by the hemispherical shape and the inner circumference of the outer cylindrical member 7.
  • the inner diameter becomes smaller toward the outside of the axis, the movement of the partition member 16 to the outside of the axis can be firmly restricted. This effect is the same in (b) of FIG.
  • the side collision airbag is inflated and deployed.
  • the invention is not limited to this, and the passenger side airbag incorporated in the instrument panel is inflated and deployed. It can be applied to anything.
  • the gas generator that inflates and deploys the airbag for the passenger seat usually has a long cylindrical housing, and by applying the structure shown in Figs. 1 to 3 to the airbag, Can be appropriately expanded and deployed. Further, the gas generator S of the present invention can be applied to a device that operates a seat belt pretensioner. The seatbelt pretensioner tightens the seatbelt with gas introduced from a gas generator.
  • the gas generator S of the present invention can be applied to an air belt for protecting a passenger by introducing gas into the seat belt ⁇ ⁇ ⁇ .
  • each gas discharge hole 7a is opened in the housing 1 so as to be orthogonal to the axial direction of the housing 1 as shown in FIGS. 1 and 4. , Through the housing 1 in the axial direction It is also possible to open the housing 1 so that Industrial applicability
  • the gas generator of this invention slag collection and cooling of a high temperature gas can be fully performed, using the whole filter material effectively. Further, the filter material can be made small in diameter so as not to reduce the effects of slag collection and cooling by the filter material. This makes it possible to reduce the size and weight of the gas generator.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un générateur de gaz (S) qui comprend un boîtier cylindrique allongé (1) dans lequel une chambre de combustion (3), un élément de filtre cylindrique (2), et une chambre d'écoulement des gaz (4) sont disposés en série dans l'ordre indiqué. La chambre de combustion (3) est remplie d'un agent générateur de gaz (5), et plusieurs orifices de décharge des gaz (7a) sont ménagés dans la chambre d'écoulement des gaz (4) pour communiquer avec un coussin d'air. Un moyen d'allumage (6) est installé dans le boîtier (1) pour allumer et brûler l'agent générateur de gaz (5) dans la chambre de combustion (3).
PCT/JP2001/002857 2000-04-03 2001-04-02 Generateur de gaz WO2001074633A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001248738A AU2001248738A1 (en) 2000-04-03 2001-04-02 Gas generator
JP2001572341A JP4813735B2 (ja) 2000-04-03 2001-04-02 ガス発生器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000-100200 2000-04-03
JP2000100200 2000-04-03

Publications (1)

Publication Number Publication Date
WO2001074633A1 true WO2001074633A1 (fr) 2001-10-11

Family

ID=18614435

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/002857 WO2001074633A1 (fr) 2000-04-03 2001-04-02 Generateur de gaz

Country Status (4)

Country Link
JP (1) JP4813735B2 (fr)
AU (1) AU2001248738A1 (fr)
TW (1) TW495452B (fr)
WO (1) WO2001074633A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004080767A1 (fr) * 2003-03-12 2004-09-23 Nippon Kayaku Kabushiki Kaisha Generateur de gaz
JP2007514610A (ja) * 2003-12-17 2007-06-07 オートモーティブ システムズ ラボラトリィ、 インク． インフレーター
JP2008247301A (ja) * 2007-03-30 2008-10-16 Toyoda Gosei Co Ltd ガス発生器
US7681915B2 (en) 2003-12-24 2010-03-23 Nippon Kayaku Kabushiki Kaisha Partitioning method for pipe material, pipe material manufactured by the method, and gas generator
US7721652B2 (en) 2004-03-02 2010-05-25 Nippon Kayaku Kabushiki Kaisha Gas generator
JP2020500770A (ja) * 2016-12-02 2020-01-16 ティーアールダブリュー・エアバッグ・システムズ・ゲーエムベーハー インフレータ、エアバッグモジュール及びモータ車両安全システム

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5166634A (fr) * 1974-08-20 1976-06-09 Nissan Motor
JPH0752745A (ja) * 1993-08-20 1995-02-28 Nippon Oil & Fats Co Ltd ガス発生器
JPH0752748A (ja) * 1993-08-23 1995-02-28 Nippon Oil & Fats Co Ltd 冷却捕集フィルタ及びそれを用いたガス発生器
JP3016432U (ja) * 1995-03-31 1995-10-03 日本化薬株式会社 小型ガス発生器
JPH08268209A (ja) * 1995-03-31 1996-10-15 Nippon Kayaku Co Ltd ガス発生器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0958394A (ja) * 1995-08-29 1997-03-04 Matsushita Electric Ind Co Ltd エアバッグ装置用ガス発生装置
JPH09323614A (ja) * 1996-06-07 1997-12-16 Honda Motor Co Ltd エアバッグ用インフレータ
US5763817A (en) * 1996-08-14 1998-06-09 Bendix-Atlantic Inflator Company Center gas fill inflator
EP0978424B1 (fr) * 1998-08-04 2003-06-18 TRW Airbag Systems GmbH Générateur de gaz avec injection de liquide contrôlable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5166634A (fr) * 1974-08-20 1976-06-09 Nissan Motor
JPH0752745A (ja) * 1993-08-20 1995-02-28 Nippon Oil & Fats Co Ltd ガス発生器
JPH0752748A (ja) * 1993-08-23 1995-02-28 Nippon Oil & Fats Co Ltd 冷却捕集フィルタ及びそれを用いたガス発生器
JP3016432U (ja) * 1995-03-31 1995-10-03 日本化薬株式会社 小型ガス発生器
JPH08268209A (ja) * 1995-03-31 1996-10-15 Nippon Kayaku Co Ltd ガス発生器

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004080767A1 (fr) * 2003-03-12 2004-09-23 Nippon Kayaku Kabushiki Kaisha Generateur de gaz
JP2007514610A (ja) * 2003-12-17 2007-06-07 オートモーティブ システムズ ラボラトリィ、 インク． インフレーター
JP4856550B2 (ja) * 2003-12-17 2012-01-18 オートモーティブ システムズ ラボラトリィ、 インク． インフレーター
US7681915B2 (en) 2003-12-24 2010-03-23 Nippon Kayaku Kabushiki Kaisha Partitioning method for pipe material, pipe material manufactured by the method, and gas generator
US7721652B2 (en) 2004-03-02 2010-05-25 Nippon Kayaku Kabushiki Kaisha Gas generator
JP2008247301A (ja) * 2007-03-30 2008-10-16 Toyoda Gosei Co Ltd ガス発生器
JP2020500770A (ja) * 2016-12-02 2020-01-16 ティーアールダブリュー・エアバッグ・システムズ・ゲーエムベーハー インフレータ、エアバッグモジュール及びモータ車両安全システム

Also Published As

Publication number Publication date
JP4813735B2 (ja) 2011-11-09
TW495452B (en) 2002-07-21
JPWO2001074633A1 (ja) 2004-01-15
AU2001248738A1 (en) 2001-10-15

Similar Documents

Publication Publication Date Title
KR100479307B1 (ko) 차량 탑승자용 안전 구속 시스템의 에어백 팽창 장치
JP5624019B2 (ja) 出力適応型インフレータ
US7267365B2 (en) Inflator
KR100459589B1 (ko) 가스 발생기
US7950693B2 (en) Dual stage inflator
EP1658204B1 (fr) Dispositif de gonflage pyrotechnique pour parer les chocs lateraux
WO2000032446A1 (fr) Generateur de gaz de coussin d'air et dispositif de coussin d'air
US7178831B2 (en) Gas generator
JPH1178766A (ja) エアバッグ用ガス発生器
WO2001042061A1 (fr) Generateur de gaz
JP4813735B2 (ja) ガス発生器
JP3891932B2 (ja) ガス発生器
JP2004359031A (ja) 多段着火式ガス発生器
JPH0840180A (ja) 乗物搭乗者用の膨張可能な拘束具の膨張装置
JP2001130368A (ja) エアバッグ用ガス発生器
WO2001074631A1 (fr) Generateur de gaz
JP4633918B2 (ja) ガス発生器
WO2001072560A1 (fr) Générateur de gaz
WO2001074632A1 (fr) Generateur de gaz
JP2002362299A (ja) ガス発生器
WO2002036394A1 (fr) Generateur de gaz
JP2008179347A (ja) ハイブリッドばねを有するガス生成装置
JP2002362298A (ja) ガス発生器及びそれに用いるフィルター材
JP2003002153A (ja) ガス発生器
JP2001106015A (ja) エアバッグ用ガス発生器及びエアバッグ装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
WWE Wipo information: entry into national phase

Ref document number: 2001572341

Country of ref document: JP