MXPA97007386A - Gas generator apparatus for air bag device and method for inflating the bag of a - Google Patents

Abstract

The present invention relates to a gas generating apparatus for an air bag device, comprising: a first chamber accommodating a combustible fluid, and provided with a first exhaust opening which is in communication with an air bag; chamber that is larger than the second chamber, which accommodates at least one of a combustible fluid and an inert fluid, a first occluding member for occluding the first exhaust opening, an ignition device for igniting the combustible fluid in the first chamber; where it is ignited when a portion of the fuel fluid in the first one, thereby discharging the fluid that is in the first and second chamber through the first exhaust opening to inflate the bag of ai

Description

GAS GENERATOR APPARATUS FOR AIR BAG DEVICE AND METHOD FOR INFLATING THE AIR BAG TECHNICAL FIELD The present invention relates to a gas generating apparatus for an air bag apparatus mounted on a vehicle or the like for charging a gas, at collision moment of the vehicle, in an air pocket interposed between a passenger and an interior member of the vehicle's camera, in such a way that inflates the air bag, thus protecting the passenger of the vehicle. BACKGROUND OF THE INVENTION Conventionally, in the gas generating apparatus for the air bag apparatus, an inert gas, for example, compressed nitrogen or argon, is used. Japanese Patent Application of Public Disclosure No. 5-278554 discloses an apparatus using a fuel gas mixture. In this apparatus, the combustible gas mixture accommodated in a pressure vessel is ignited from its one-sided surface, and when the gas pressure increases due to an increase in temperature by combustion, the pressure breaks the surface of the other end. of the pressure vessel, which allows the combustion gas to flow from there into the interior of the air bag to inflate it. However, in the initial state in which the fuel gas mixture is ignited in the conventional apparatus disclosed in Japanese Patent Application Public Disclosure No. 5-278554, between the whole gas contained in the pressure vessel, only the burns the gas that is next to the ignition, and the gas contained in the other extreme surface tends not to burn. Therefore, it is difficult to effectively use the entire fuel gas mixture, or it takes a long time to increase the pressure inside the pressure vessel. As a result, the problem arises that the time period of the initial response is lengthened. Furthermore, in the gas generating apparatus for the air bag apparatus, it is necessary that the speed of the initial response of the air bag apparatus at the time of operation be high, and it is also necessary that a period of time necessary to complete the inflation of the airbag in different ways, in accordance with a volume of the airbag and the speed that are determined for the type of vehicle in view of a size and shape of the vehicle. Moreover, in the conventional apparatus presented in the aforementioned publication, the airbag is inflated by the ignition of the gas mixture, and an inflation characteristic until the completion of the inflation operation follows a previously designated characteristic. Therefore, the characteristic is fixed at the design stage. However, the inflation characteristic should not necessarily be limited to only one value in view of the various conditions, for example, degree of a collision, position of a seated passenger, physical difference between passengers, and the like. For this reason, an air bag apparatus must be provided in which a degree of freedom is ensured at the time of operation of the air bag apparatus, so that the inflation characteristic can be varied appropriately, in accordance with the conditions mentioned above. Therefore, a main objective of the present invention is to provide a gas generating apparatus for an air bag apparatus in which a mixture of fluids (hereinafter referred to as a "combustion fluid mixture") is generated afterwards. that a mixture of burned combustion fluid is fed effectively and rapidly into the air bag, and in which a period of time required to complete inflation of the air bag can be modified through a simple structure. In addition, another object of the invention is to perform an inflation characteristic that corresponds to several conditions at the time of operation of the air bag apparatus. Additionally, another object of the invention is to realize a gas generating apparatus for an air bag apparatus with a simple structure in which the mixture of combustion fluid can be burned quickly, and only the combustion fluid mixture can be fed rapidly into the air pocket and from there, the response speed is high, by dividing a combustion chamber into a first chamber and a second chamber. A further object of the present invention is to control the direction of the fluid flowing through a third vent opening from a first chamber into a second chamber, when the mixture of combustion fluid contained in the first chamber is ignited and the ignited combustion fluid mixture is introduced into the second chamber. Still another object of the invention is to control the communication between the first chamber and the second chamber, in accordance with a given condition, and to control the inflation state of the airbag. Still another object of the invention is to control the amount of combustion fluid mixture introduced into the air bag with respect to the given condition, in such a way as to control the inflation state of the air bag. DESCRIPTION OF THE INVENTION i In accordance with claim 1, there is provided a gas generating apparatus for an air bag apparatus, comprising: a first chamber housing a combustible fluid and provided with a first vent opening communicating with an airbag; a second chamber that is larger than the first chamber and that houses a fuel fluid or an inert fluid, or both; a first occlusion member for covering the first ventilation opening; an ignition mechanism to ignite the fuel fluid contained in the first chamber; wherein at least a portion of the fuel fluid contained in the first chamber is burned, thereby discharging the fluid contained in the first and second chambers through the first vent to inflate the air bag. With the above arrangement, the chamber for housing the fuel fluid is divided into the first and second chambers, and the fuel fluid is ignited in the first chamber provided with the first vent opening communicating with the air bag. Therefore, it is possible to rapidly break the first occlusion member, and discharge the combustion fluid mixture into this first chamber. Thus, the time period of the initial response in which the airbag begins to inflate can be shortened. Because the first camera is smaller than the second camera, this effect improves more. According to claim 2, in addition to claim 1, the gas generating apparatus for the air bag apparatus further includes a second vent opening for communicating the first and second chambers with each other, and a second occlusion member for Covering the second vent opening, where the fuel fluid contained in the first chamber burns, the first chamber closes substantially. With this arrangement, when the fuel fluid contained in the first chamber is burned, because the first chamber is substantially closed, a pressure within the first chamber can be reliably increased by combustion. Therefore, the first occlusion member can be broken reliably and rapidly, and the time period of the initial response in which the airbag begins to inflate can be shortened. In this case, it should be noted that the expression in the sense that the first chamber is "substantially closed" means that the first chamber is closed to such an extent that a pressure increase necessary to break the first occlusion member is not prevented. . According to claim 3, in addition to claim 2, the second occlusion member is provided outside the first chamber. With the arrangement, it is possible to easily assemble the second occlusion member. In accordance with claim 4, in addition to claim 2, the second occlusion member is provided within the first chamber. With this arrangement, it is possible to control a direction of the pressure to break the second occlusion member. According to claim 5, in addition to claim 2, the second occlusion member is formed to break more easily with a pressure of the second chamber than by a pressure of the first chamber. With this arrangement, when the fluid in the second chamber burns or expands after the discharge of the fluid contained in the first chamber into the air bag is initiated, the second occlusion member is broken. Therefore, the first occlusion member is broken reliably and quickly to shorten the time period of the initial response in which the airbag begins to inflate. In addition, because the fluid contained in the second chamber is discharged after the fluid contained in the first chamber, it is possible to reliably burn or expand the fluid contained in the second chamber. According to claim 6, in addition to any of claims 2 to 5, the first chamber includes a third vent opening communicating with the second chamber, the third vent having an opening area smaller than that of the second chamber. ventilation opening or a length greater than that of the second ventilation opening, or both. With this arrangement, when the fuel fluid contained in the first chamber is ignited, the mixture of combustion fluid generated is introduced into the second chamber from the third ventilation opening. Therefore, it is possible to burn or expand the fluid contained in the second chamber with the simple structure. According to claim 7, in addition to claim 6, the third vent opening is formed in a side wall of the first chamber. With this arrangement, it is possible to burn the fluid contained in the second chamber with the simple structure. According to claim 8, in addition to claim 6, the third vent opening is formed in the second occlusion member. With this arrangement, it is possible to burn the fluid contained in the second chamber also with a simple structure. According to claim 10, in addition to any of claims 1 to 9, the first occlusion member is broken by an increase in pressure within the first chamber. With this arrangement, the combustion fluid mixture can be rapidly supplied to the air bag. According to claim 11, in addition to any of claims 1 to 10, the second occlusion member is broken by a difference between a pressure within the first chamber and a pressure within the second chamber. With this arrangement, the combustion fluid mixture can be rapidly supplied to the air bag. According to claim 12, in addition to claim 1, the first chamber is provided at one end thereof with the first ventilation opening, and the other end of the first chamber acquires a narrow cylindrical shape and opens inside the second camera. With this arrangement, it is possible to provide a inexpensive gas generating apparatus with a simple structure without using a second occlusion member. According to claim 13, in addition to any of claims 1 to 12, the first chamber is provided, on an end surface thereof where the first vent is provided, with a gas diffuser member having several holes fluid diffusers directed in a radial direction. With this provision,. it is possible to weaken the inertial force caused by the fluid expelled from the first ventilation opening. According to claim 14, in addition to any of claims 1 to 13, the first chamber or the second chamber, or both, includes an oxidant, or the oxidant and an inert gas. With this arrangement, it is possible to use a fuel fluid that is easy to handle and obtain. According to claim 15, in addition to claim 1, the gas generating apparatus further includes a third vent opening for communicating the first and second chambers together, and a control mechanism for controlling the communication of the third chamber. Ventilation opening and inflation of the airbag. With this arrangement, it is possible to vary the flow velocity of the combustion fluid mixture into the interior of the air bag. According to claim 16, in addition to claim 15, the control mechanism includes a closing member for closing the third ventilation opening between its fully open state and its minimum opening area, the closure member retaining the third opening of ventilation in the completely open state in a normal state, closes the third ventilation opening, in such a way that assumes the minimum opening area, when the car collides at high speed and, in other cases, it works so that the third ventilation opening assume a predetermined opening area between the fully open state and the minimum opening area, in accordance with a degree of car collision. With this arrangement, the inflation feature of the airbag can be controlled by controlling the combustion of the second chamber. In accordance with claim 17, in addition to claim 15, the control mechanism includes an inertially moving member mounted within the first chamber and capable of moving in an axial direction of the first chamber, the inertially moving member lowering a volume of the first chamber in accordance with a degree of collision at the time of the automobile collision. With this arrangement, it is possible to vary the time period of the initial response of the airbag. According to claim 18, in addition to claim 17, the inertially moving member is biased in one direction to maximize the volume of the first chamber. According to claim 19, in addition to claim 17 or 18, the first chamber is provided in such a manner that it extends into the interior of the second chamber in its axial direction. According to claim 20, in addition to claim 17 or 18, the first chamber is provided to be understood towards the interior of the second chamber in a direction substantially perpendicular to the axial direction of the second chamber. According to claim 21, as well as in addition to any of claims 17 to 20, the third ventilation opening is provided in plural in a side wall of the first chamber at a predetermined distance one from the other in a longitudinal direction of the first chamber, the inertially moving member closes the previously determined number of the third ventilation openings in accordance with a degree of collision.

According to claim 22, in addition to claim 21, the inertially moving member maximizes the volume of the first chamber, and is predisposed in a position to open all the third ventilation openings. According to claim 23, in addition to claim 21 or 22, the third ventilation opening comprises a slot portion formed in such a way that it extends in a longitudinal direction of the first chamber. According to claim 24, in addition to claim 1, the gas generating apparatus additionally includes a discharge mechanism provided between the first vent opening and the air bag for discharging gas to the outside, and a control mechanism for controlling the communication between the discharge mechanism and the outside in accordance with a previously determined condition, wherein the control mechanism controls the inflation of the airbag. With this arrangement, it is possible to provide an inflation feature corresponding to various conditions at the time of operation of the gas generating apparatus, by discharging a portion of the combustion fluid mixture out of the gas generating apparatus. According to claim 25, in addition to claim 24, the gas generating apparatus additionally includes a discharge port, wherein the control mechanism includes a gate mechanism for adjusting the discharge port between its fully open state and its state. completely closed, the gate member maintains the fully open state of the discharge port in a normal state, completely closes the discharge port when the car collides at high speed and, in other cases, adjusts to place the discharge port in a state open previously determined between the fully open state and the fully closed state, in accordance with a degree of car collision. Also with this arrangement, it is possible to provide the inflation feature corresponding to various conditions at the time of operation of the gas generating apparatus. According to claim 26, in addition to claim 1, the ignition mechanism includes a portion. of ignition extending into the interior of the first chamber, the first chamber being provided with an interior wall surface thereof close to the ignition portion with a convex portion. With this arrangement, the time period of the initial response of the airbag can be shortened by the convex portion. According to claim 27, there is provided a gas generating apparatus for an air bag apparatus, comprising: a first chamber housing a fuel fluid and provided with a first vent opening communicating with an air bag; a second chamber that is larger than the first chamber and that houses a fuel fluid or an inert fluid, or both; a first occlusion member for closing the first vent opening; a second vent opening for communicating the first and second chambers together; a second occlusion member for closing the second vent opening; a third ventilation opening for communicating the first and second chamber to each other, the third ventilation opening having a cut-off area smaller than that of the second ventilation opening or a length greater than that of the second ventilation opening, or both; and an ignition mechanism to ignite the fuel fluid contained in the first chamber; wherein at least a portion of the fuel fluid contained in the first chamber is burned by the ignition mechanism, the fluid contained in the second chamber is burned or expanded, or both, by the third vent, a fluid contained in the first chamber is discharged from the first ventilation opening, and the fluid contained in the second chamber is discharged from the first ventilation opening through at least the second ventilation opening, thus inflating the air bag. With this arrangement, the chamber housing the fuel fluid is divided into the first and second chambers, and the fuel fluid housed in the first chamber having the first vent opening communicating with the air bag, rapidly breaking, is ignited, therefore, the first occlusion member to discharge the combustion fluid mixture generated within the first chamber. Therefore, it is possible to shorten the time period of the initial response in which the bag begins to inflate. This effect is further improved because the first chamber is formed smaller than the second chamber. In addition, a portion of the combustion fluid mixture created in the first chamber is introduced into the second chamber through the third vent opening. Therefore, the fluid contained in the second chamber can be burned or expanded with a simple structure. In addition, the fluid contained in the second chamber is discharged after it enters the first chamber and, therefore, the fluid can be reliably burned or expanded. According to claim 28, in addition to claim 27, the third vent opening is formed in the central axis of the second chamber. With this arrangement, the fuel fluid contained in the second chamber can be burned or expanded at high speed, which makes it possible to accelerate the pressure increase within the second chamber. According to claim 29, in addition to claim 27, the third vent opening is formed at a location offset from the central axis of the second chamber. With this arrangement, it is possible to retard the combustion rate or the inflation rate of the fuel fluid contained in the first chamber, and to retard the increase in pressure within the second chamber. According to claim 30, in addition to claim 27, the longitudinal axis of the third ventilation opening is parallel to the central axis of the second chamber. With this arrangement, it is possible to control the combustion rate of the fuel fluid contained in the second chamber or the increase in pressure within the second chamber. According to claim 31, in addition to claim 27, the longitudinal axis of the third vent opening is directed in a direction intersecting the central axis of the second chamber. With this arrangement, it is possible to control, to some degree, the combustion rate of the fuel fluid contained in the second chamber or the increase in pressure within the second chamber. According to claim 32, in addition to claim 27, the second chamber acquires a cylindrical shape, and the longitudinal axis of the third ventilation opening is directed in a circular direction of the second chamber. With this arrangement, it is possible to control, to some degree, the combustion rate of the fuel fluid contained in the second chamber or the increase in pressure within the second chamber. According to claim 33, in addition to claim 27, the third ventilation opening is provided in plural, the axes of the third ventilation openings are directed regularly or irregularly in multiple directions. With this arrangement, it is possible to control in a varied manner the combustion rate of the fuel fluid contained in the second chamber or the increase in pressure inside the second chamber. According to claim 34, in addition to any of claims 27 to 33, the gas generating apparatus further includes a diverting mechanism of the flow path to deflect an outflow direction of a fluid expelled from the first chamber. to the second chamber, through the third ventilation opening. With this arrangement, it is possible to control the combustion rate of the fuel fluid contained in the second chamber or the increase in pressure within the second chamber. In accordance with claim 35, in addition to claim 34, the diverting mechanism of the flow path is selected from at least one projection, a plate, a screen and a metal wire provided in the first chamber or in the second chamber, or both. With this arrangement, it is possible to control the combustion rate of the fuel fluid contained in the second chamber or the increase in pressure inside the second chamber.

According to claim 36, in addition to any of claims 27 to 35, a sum of the areas in section of the third ventilation openings in a range of 0.10 m to 20 mm is adjusted. With this arrangement, the combustion rate of the fuel fluid contained in the chamber can be controlled as effectively as possible. According to claim 37, in addition to any of claims 27 to 36, a length of the third vent opening is adjusted in a range of 0.2 mm to 100 mm. With this arrangement, the combustion rate of the fuel fluid contained in the chamber can be controlled as effectively as possible. According to claim 38, in addition to 27, the gas generating apparatus further includes combustion gas cooling mechanisms for cooling a fluid expelled from the first chamber to the second chamber through the third vent opening. With this arrangement, it is possible to control the combustion rate of the fuel fluid contained in the second chamber or the pressure increase within the second chamber, and decrease the temperature of the combustion fluid mixture. According to claim 39, in addition to claim 38, the combustion gas cooling mechanism is selected from at least one projection, a plate, a screen and a metal wire provided in the first chamber or in the second chamber, or both. With this arrangement, it is possible to control the combustion rate of the fuel fluid contained in the second chamber or the pressure increase within the second chamber, and to effectively decrease the temperature of the combustion fluid mixture. According to claim 40, in addition to any of claims 27 to 39, the second vent opening is adjusted to open when a predetermined period of time has elapsed after the ignition mechanism operates. With this arrangement, it is possible to quickly introduce the gas into the air bag. According to claim 41, in addition to claim 40, the second occlusion member is broken when a pressure within the first chamber reaches a predetermined value. With this arrangement, it is possible-to begin to quickly introduce the fluid into the air bag. According to claim 42, in addition to claim 41, the second first chamber is mechanically broken. With this arrangement, it is possible to begin to quickly introduce the fluid into the air bag. According to claim 43, there is provided a gas generating apparatus for an air bag apparatus, comprising: a first chamber housing a combustible fluid and having a first vent opening; and a second chamber having second and third ventilation openings; wherein a portion of the combustion product created in the first chamber is passed through the third ventilation opening and is introduced into the second chamber, a combustion product created in the second chamber is introduced from the second opening of the second chamber. ventilation into the interior of the first chamber, and combustion products created in the first and second chambers are discharged from the first ventilation opening. With this arrangement, the chamber housing the fuel fluid is divided into the first and second chambers, and the combustion product is created in the first chamber having the first vent opening communicating with the air bag. Therefore, it is possible to quickly break the first occlusion member, and quickly discharge the combustion product in this first chamber. As a result, it is possible to shorten the time period of the initial response in which the airbag begins to inflate. In addition, a portion of the combustion product created in the first chamber is introduced from the third ventilation opening into the interior of the second chamber. Therefore, the fluid contained in the second chamber can be burned with the simple structure. Moreover, the fluid contained in the second chamber is discharged after which inside the first chamber, the fluid can be burned reliably.

According to claim 44, there is provided a gas generating apparatus for an air bag apparatus, comprising: at least two chambers capable of communicating with each other; a fluid housed in each of the chambers; wherein the fluid housed in at least one of the chambers is combustible fluid, one of the two chambers ignites the combustible fluid, and both fluids are discharged from the chamber that ignites the combustible fluid. With this arrangement, the fluid can be quickly introduced into the air bag. According to claim 45, there is provided a method for inflating an air bag comprising a first chamber and a second chamber for burning a fuel fluid housed in at least the first chamber to inflate the air bag by a fluid mixture. whose pressure increases by a rise in temperature due to combustion, the method comprising the steps of: igniting the combustible fluid in the first chamber; introducing, in the second chamber, at least a portion of a mixture of combustion fluid created in the ignition step; introducing, in the air bag, at least a portion of the combustion fluid mixture generated in the ignition step; and introducing at least a portion of the combustion fluid mixture into the second chamber from the second chamber through the first chamber into the interior of the air bag. With this method, fluid can be quickly introduced into the air pocket. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view of a gas generating apparatus according to a first embodiment; Fig. 2 is a graph showing a relationship between a fluid pressure and time in a condition in which a first chamber and a second chamber are independent of each other according to the first embodiment; Fig. 3 is a partial sectional view showing a modification of the first chamber and a second occlusion member according to the first embodiment; Fig. 4 is a partial sectional view showing another modification of the first chamber and the second occlusion member according to the first embodiment; Fig. 5 is a partial sectional view showing another modification of the first chamber and the second occlusion member according to the first embodiment; Fig. 6 is a partial sectional view of a gas generating apparatus for an air bag apparatus according to a second embodiment of the invention; Fig. 7 is a sectional view of a gas generating apparatus for an air bag apparatus in accordance with a third embodiment of the invention; Fig. 8 is a sectional view of a gas generating apparatus for an air bag apparatus according to a fifth embodiment of the invention; Fig. 9 is a sectional view of a gas generating apparatus for an air bag apparatus according to a sixth embodiment of the invention; FIG. 10 is a front elevated view of a third vent opening of the gas generating apparatus for the air bag apparatus viewed from the side of the second occlusion member; Fig. 12 is a perspective view of a flow chart of the diverter mechanism contained in the gas generating apparatus for the air bag apparatus; Fig. 13 is a sectional view of an air bag apparatus according to a ninth embodiment of the invention; Fig. 14 is a front elevated view of a flow chart of the diverter mechanism contained in the gas generating apparatus for the air bag apparatus; Fig. 15 is a sectional view of an air bag apparatus according to a tenth embodiment of the invention; Fig. 16 is a sectional view of an air bag apparatus according to a thirteenth embodiment of the invention; Fig. 17 is a partial sectional view of an air bag apparatus for an air bag apparatus according to a fifteenth embodiment of the invention; Fig. 18 is a partial sectional view showing one embodiment of the gas generating apparatus for the air bag apparatus at the time of operation of an automobile; Fig. 19 is a partial sectional view of a gas generating apparatus for an air bag apparatus according to a sixteenth embodiment of the invention; Fig. 20 is a partial sectional view showing a mode of the gas generating apparatus for the air bag apparatus at the time of collision of an automobile; Fig. 21 is a partial sectional view of a gas generating apparatus for an air bag apparatus according to the seventeenth embodiment of the invention; and Fig. 22 is a partial sectional view of a gas generating apparatus in accordance with a eighteenth embodiment of the invention; Fig. 23 is a partial sectional view showing a mode of the gas generating apparatus for the air bag apparatus at the time of operation of an automobile. PREFERRED EMBODIMENTS (First Form of Embodiment) A first embodiment of the present invention will be explained with reference to the drawings. Fig. Shows an arrangement of a gas generating apparatus according to the first embodiment of the invention. In Fig. 1, a reference number 1 denotes the entire gas generating apparatus. A reference number 2 denotes a cylindrical modular box with a square bottom that forms a profile of the gas generating apparatus 1. An airbag 3 is mounted on the modular box 2 which includes several fluid supply ports 4. The airbag 3 is bent in a normal condition. A gas generating apparatus 100 for the air bag apparatus is inserted into the module case 2, such that it closes the second one by sealing. The gas generating apparatus 100 for the air bag apparatus includes a second chamber 5 which forms a pressure vessel which houses a mixture of combustible fluid 7. The second chamber 5 is provided at its end 5a with a fluid loading opening. 6 for charging the fuel fluid mixture 7. The fluid loading opening 6 is sealed after charging the fluid. A reference number 8 denotes a first ventilation opening formed in the other end 5b of the second chamber 5. A reference numeral 9 denotes a first chamber mounted on the inner side of the other end 5b of the second chamber 5 through welding , screw or the like, to surround the first ventilation opening 8. The first chamber 9 and the second chamber 5 are separated by a partition wall 9a. The partition wall 9a includes a third ventilation opening 10 comprising a plurality of ventilation openings and a second ventilation opening 11. A first occlusion member 13 closes the first ventilation opening 8, and a second occlusion member 12 closes the second vent opening 11. An ignition 14 is provided in such a way that its ignition portion 14a is located within the first chamber 9. In the present embodiment, the ignition 14 and the first occlusion member 13 can be parts separated. A destructive pressure of the first occlusion member 13 is adjusted such that the second is destroyed or broken when a pressure in the first chamber 9 reaches a level twice as high as the initial pressure. The ignition 14 ignites the combustion fluid mixture inside the first chamber 9 upon receiving the signal from a shock sensor or a deceleration sensor, which are not shown. A diffuser 15 is mounted on the outer side of the other end 5b of the second chamber 5, in such a way that it surrounds the first ventilation opening 8, and is provided with a plurality of fluid diffusing orifices 16. In this case, the mechanism to ignite the mixture of combustion fluid 7 inside the first chamber 9 can be a detonator. A mixture including an inert fluid, a fuel fluid and an oxidant fluid is used as the fuel fluid mixture 7. A preferred inert fluid is nitrogen, argon, helium or a mixture thereof. The fuel fluid can be hydrogen, lower hydrocarbon, lower alcohol, lower ether or a mixture thereof. A preferable oxidant fluid is oxygen. Air may be used as a mixture of inert fluid and oxidant fluid. As the fuel fluid mixture 7, a fuel fluid can be used that does not include an inert fluid, but that includes a small amount of fuel fluid and oxidant fluid in an amount sufficiently greater than the amount needed to burn the fuel fluid. In addition, the fuel fluid mixture 7 can be composed of a compound that is brought to the fuel range just before or simultaneously with ignition of the fuel fluid. In this case, just before the fuel fluid is ignited, or simultaneously to the same, the oxidant fluid or a mixture of the oxidant fluid and the inert fluid is mixed with combustible fluid. In addition, the fuel fluid mixture 7 may be a mixture of gas or a liquid mixture. In the embodiments of the present invention, it is noted that the mixture of combustion fluid is housed in both the first and second chambers, but a fuel fluid housed in one of the chambers that does not ignite may not necessarily be the mixture of combustion fluid. In that case, a mixture of fluid may not include a combustible fluid, whose amount is so small that the concentration thereof is equal to or less than the limit of combustion. In this case, in order to prevent the fluid contained in each of the chambers from mixing, an occlusion member is also mounted in the third ventilation opening. As a mechanism for breaking the occlusion member provided in the third ventilation opening, any rupture mechanism, for example, a piston or the like, and mechanisms using a pressure difference can be used. Next, the operation of the first embodiment described above will be explained. In the drawings, it should be noted that any part denoted by the same number indicates the same element. When a vehicle decelerates rapidly due to a collision or the like, the ignition 14 turns on the fuel fluid mixture 7 inside the first chamber 9 by the shock sensor signal or the deceleration sensor. By this, the combustion fluid mixture is burned within the first chamber 9, the temperature of the fluid rises due to burning and, as a result, the pressure inside the first chamber 9 increases. When the pressure within the the first chamber 9 reaches a level twice as high as the initial pressure, a fragile portion of the first occlusion member 13 is broken, and the combustion fluid mixture is introduced from the first chamber 9 through the first ventilation opening 8. , the diffuser 15, the modular box 2 towards the interior of the air bag 3. In the present, the term "combustion fluid mixture" means a mixture of fluid that is created by burning the fuel fluid mixture 7. During that time, on the one hand, at least a portion of the combustion fluid mixture within the first chamber 9 is passed through the third ventilation opening 10 and is introduced into the second chamber 5 to start burning r the fuel fluid mixture 7 within the first chamber 5. On the other hand, the pressure inside the. first chamber 9 decreases rapidly because the combustion fluid mixture flows outwards due to the destruction of the first occlusion member 13. For this reason, the pressure difference between the second chamber 5 and the first chamber 9 increases. If the difference of pressure reaches a predetermined value, the fragile portion of the second first chamber 12 is broken. By this, the mixture of combustion fluid inside the second chamber 5 passes to the second ventilation opening 11, and is introduced into the air through the first chamber 9, the diffuser 15 and the modular box 2. The pressure inside the second chamber 5 decreases once because the combustion fluid mixture flows outwardly from the second ventilation opening 11. However, because the combustible fluid that has not yet been burned inside the second chamber 5 is subsequently burned, the pressure inside the second chamber 5 is balanced or slightly increased to supply the combustion fluid mixture to the air bag 3 until the combustible fluid contained in the second chamber 5 burns completely. If it is desired to accelerate combustion within the second chamber 5, the second occlusion member 12 can be adjusted to break in a condition where the pressure within the first chamber 9 is greater than a pressure inside the second chamber 5. This is, the second first chamber 12 can be broken before or simultaneously with the destruction of the. first occlusion member 13. The second first chamber 12 can be broken using a pressure difference between the first and second chambers, or it can be broken mechanically upon receipt of a signal from an external sensor (not shown). Fig. 2 shows a modification in the increase in pressure as time passes within the first chamber 9 and the second chamber 5 in accordance with the first embodiment. In Fig. 2, a curve A indicates an increase in pressure within the first chamber 9, and a curve B indicates an increase in pressure within the second chamber 5. The increase in pressure in the first and second chambers 9 and 5 shown in Fig. 2 was measured independently in a condition in which both the first occlusion member 13 and the second occlusion member 12 were adjusted not to break and a volume in the first chamber is substantially adjusted to one tenth of a volume of the second chamber 5. As is apparent in the comparison between the point P and the point Q in Fig. 2, the time required to reach the destruction pressure previously determined in the first chamber 9 having a smaller volume than the second chamber 5 is smaller, in (tQ-tP), than the time required to reach the destruction pressure previously determined in the second chamber 5. J 3 shows a modification of the first chamber 9 and the occlusion member 12 of conformity with the first embodiment. A second occlusion member 120 is provided to a partition wall 90a of a first chamber 90 on the interior side and is joined (not shown) to the partition wall 90a at an exterior peripheral portion of the occlusion member 120. A second Vent opening 110 of partition wall 90a is composed of several small diameter openings. That is, when a pressure inside the first chamber 90 is greater than a pressure inside the second chamber 5, the pressure is received by the second ventilation opening 110 having a small diameter and, therefore, a higher pressure can be adjusted. destructive of the occlusion member 120. On the contrary, when the pressure inside the second chamber 5 is greater than inside the first chamber 90, the pressure is received by the opening with the largest diameter and, therefore, can be adjusted a lower destructive pressure of the second occlusion member 120. Other arrangements are the same as those shown in Fig. 1. Fig. 4, on the one hand when the fuel fluid mixture 7 inside the first chamber 90 is ignited by the ignition 14, increase the pressure inside the first chamber. At that time, because the second occlusion member 120 receives the pressure through the second vent opening having a small diameter, the second occlusion member 120 is not broken by the pressure inside the second chamber, whose pressure is less than within the first chamber 90. On the other hand, if the first occlusion member 113 is broken by the pressure increase within the first chamber 90, the pressure within the first chamber 90 rapidly decreases. Therefore, the second occlusion member 120 receives the pressure from the second ventilation opening 110 and, thereafter, the second occlusion member 120 breaks easily. As described above, in accordance with the arrangement shown in Fig. 3, it is possible to break the second occlusion member 12 simultaneously to or just after the destruction of the first occlusion member 13, and quickly introduce the combustion fluid mixture into of the second chamber 5 in the air bag. Fig. 4 shows a further modification of the first chamber 9 and the second occlusion member 12. In Fig. 4, a first chamber 91 is formed by a partition wall 91a. The partition wall 91a is provided with a second ventilation opening 111 comprising an opening Illa having a small diameter, formed on an outer side of the partition wall 91 a and a sphere portion 111 b having a larger diameter formed on the interior side of the partition wall 91 a. A second occlusion member 120 is attached to the partition wall 91a, such that it covers the sphere portion 111b. Other arrangements are the same as those shown in Fig. 1. Fig. 4, when the mixture of combustible fluid 7 inside the first chamber 91 is ignited by the ignition 14, the pressure inside the first chamber 91 increases. at that time, because the second occlusion member 120 is pushed against the sphere portion 111b, the second occlusion member 120 is not broken. When the first occlusion member 13 is broken by the pressure increase within the first chamber 91, the pressure within the first chamber 91 rapidly decreases. Therefore, the pressure within the second chamber 5 increases relative to the pressure inside the first chamber 91 and the second occlusion member 120 receives pressure from the side of the sphere portion 111b and, therefore, the second member Occlusion 120 breaks easily. As described, in accordance with the arrangement shown in Fig. 4, it is possible to break the second occlusion member 120 simultaneously to or just after the destruction of the first occlusion member 13. Furthermore, it is possible to quickly introduce the fluid mixture of combustion inside the second chamber 5 towards the interior of the air bag. Fig. 5 shows a further modification of the first chamber 9 and the second occlusion member 12 of the first embodiment. A second occlusion member 121 is attached to the first chamber 9, such that it closes the second ventilation opening 11, and is formed in its central portion with an opening 121a having a small diameter. Other arrangements are the same as those shown in Fig. 1. The arrangement shown in Fig. 5 performs the same function and provides the same effect as the arrangement shown in Fig. 1, except that the opening 121a having a diameter Small formed in the second occlusion member 121 functions as the third ventilation opening 10. In the present modification, instead of providing the third ventilation opening, the opening 121a is provided in the second occlusion member 121. But instead of providing the opening 121a, a clearance may be formed, like the third ventilation opening, in a portion of a joint between the second occlusion member 121 and a separation wall 93a. In the above-described first embodiment, when igniting the first chamber that is substantially closed and that is smaller than the second chamber, the combustion rate is accelerated, the first occlusion member is broken rapidly, and the period of the initial response in which the airbag starts to inflate. However, by providing a convex portion on a surface of the inner wall near the ignition portion 14a of the first chamber, it is possible to further accelerate the speed of the initial response. (Second Embodiment) Next, a second embodiment of the present invention will be explained. Fig. 6 shows an arrangement of a gas generating apparatus for an air bag apparatus of the second embodiment. In the second embodiment, unlike the first embodiment, a first chamber 94 has an elongated and narrow cylindrical shape, that end portion of the first chamber 94 that is opposite from the first ventilation opening 8 is not provided with a second occlusion member, but is open, and the first occlusion member 13 is attached to the outside of the first ventilation opening 8. Other arrangements are the same as those of the first embodiment shown in Fig. 1 .

In Fig. 6, when the fuel fluid mixture 7 inside the first chamber 94 is lit by the ignition 14 and burns, the mixture of combustion fluid within the first chamber 94 ignites, at its open end, the fuel fluid mixture 7 within the second chamber 5. The pressure within the first chamber 94 increases to break the first occlusion member 13, and the mixture of combustion fluid contained in the first chamber 94, and then the mixture of combustion fluid contained in the second chamber 5 are introduced into the air bag from the first vent opening 8 through the diffuser orifices of fluid 16 of the diffuser 15. In this way, even if there is no second occlusion member, in accordance also with the second embodiment, the same effect as the first chamber 9 can be obtained in the first embodiment giving Cylindrical shape, elongated and narrow to the first chamber 94. In the second embodiment, by adjusting a length and a diameter of the first chamber 94 to certain values, it is possible to vary the rupture velocity of the first occlusion member 13, and the velocity for introducing the combustion fluid mixture into the second chamber 5. In both the first and second embodiments, it is preferable to provide mechanisms for confining the first occlusion member 13 broken, or mechanisms for holding the first occlusion member 13 broken.

Figs. 7 to 16 show the third to ninth embodiments. These embodiments include structures for controlling in various ways the expansion characteristic of the air bag. In each of the third to ninth embodiments, which will be described later, the basic arrangement is the same as in the first embodiment, and the same reference numbers are assigned to the same parts. (Third Embodiment) Fig. 7 shows an arrangement of an air bag according to the third embodiment. A reference number 20 denotes the entire air bag apparatus. The reference number 2 denotes a modular box forming a profile of the air bag apparatus 20. An air bag is mounted on the modular box 2 which is provided with several fluid supply ports 4. A reference number 100 denotes a gas generating apparatus for the air bag apparatus. A reference number 5 denotes a second cylindrical chamber. The second chamber 5 includes a central axis C, a long axis L and a short axis S. A reference number 6 denotes an opening for charging fluid to charge the fuel fluid mixture 7 in the gas generating apparatus 100 for the apparatus of airbag. The opening for charging fluid 6 is closed after charging the fuel fluid mixture 7. A reference number 8 denotes a first vent opening. A reference number 9 denotes a first chamber provided on a side opposite the opening for charging fluid 6 of the second chamber 5. A reference number 11 denotes a second ventilation opening. A reference number 12 denotes a second occlusion member mounted on the partition wall 9a, such that it closes the second ventilation opening 11. A reference number 13 denotes a first occlusion member for closing the first ventilation opening 8. The first occlusion member 13 is formed integrally with the ignition 14. A reference numeral 14a denotes a portion of the ignition 14, the ignition portion being located in the first chamber 9. It should be noted that the ignition 14 and the first ignition member 14 Occlusion 13 can be separate pieces. The mechanism for igniting the mixture of combustion fluid 7 within the first chamber 9 can be a detonator. In the third embodiment, the center of the second occlusion member 12 is aligned with the central axis C of the second chamber, and a single third ventilation opening 22 is provided in the center of the second occlusion member 12. The second member of occlusion 12 is broken by the difference between a pressure within the first chamber 9 and a pressure within the second chamber 5, simultaneously to or after opening the first occlusion member 13. Instead, the first occlusion member 13 can be mechanically opened with a piston or the like, after a predetermined period of time elapses. When the fuel fluid mixture 7 contained in the first chamber 9 is burned, the first chamber 9 closes substantially. The expression in the sense that the first chamber "substantially closes" means that the first chamber closes to such an extent that no increase in pressure is necessary that is necessary to break the first occlusion member 13. Therefore, no the time period of the initial response is delayed. It should be noted that this fact also applies to fourth through fourteenth embodiments, which will be described later. In comparison with the second ventilation opening 11, the third ventilation opening 2 has a smaller or smaller cross-sectional area, or both. Even if the third vent opening 22 is composed of several openings, it is preferable that a sum of cut areas of the various openings be smaller than a transverse area of the second vent opening.

On the one hand, it is preferable that the third ventilation opening 22 be adjusted to have a cross-sectional area in a range of 0.10 to 20 mm2, and a length in a range of 0.2 to 100 mm. If the third vent opening 22 has a cross-sectional area less than 0.10 mm2 and a length greater than 100 mm, it is difficult to introduce the combustion fluid mixture generated in the first chamber 9 into the second chamber 5. On the other hand, if the third vent opening 22 has a cross-sectional area greater than 20 mm2, and a length of less than 0.2 mm, a quantity of combustion fluid mixture expelled from the first chamber 9 into the interior of the second chamber 5 increases excessively when the pressure inside the first chamber 9 increases by the operation of the gas generating apparatus. This is not preferable because the pressure inside the first chamber 9 does not increase. In the third ventilation opening 22, WHEN the cross-sectional area thereof is large, the length is preferably large, and when the cross-sectional area is small, the length is preferably short. In such an arrangement, when the vehicle decelerates rapidly due to collision or the like, the ignition 14. ignites the fuel fluid mixture 7 within the first chamber 9 by a signal from the shock sensor or the deceleration sensor. A pressure inside the first chamber 9 increases by the heat generated due to a combustion of the fuel fluid mixture 7, so that the first occlusion member 13 is broken. In addition, the combustion fluid mixture is introduced from the first vent opening 8 towards the interior of the air bag 3 through the diffuser 15 and the modular case 2. Meanwhile, at least a portion of the combustion fluid mixture inside the first chamber 9 is introduced, from the third ventilation opening 22 provided in the central axis C and the long axis L of the second chamber 5, towards the interior of the second chamber 5 towards the central axis C and the long axis L. The mixture of introduced combustion fluid ignites the mixing of fuel fluid inside the second chamber 5. In this third embodiment, the combustion fluid mixture diffuses rapidly and efficiently into the interior of the second chamber 5 and, therefore, , it is possible to quickly burn the fuel fluid mixture 7 into the second chamber 5. Therefore, a shorter period of time required to complete inflation of the airbag can be adjusted. In this case, if the opening axis of the third ventilation opening 22 is parallel to the central axis C, the axis should not necessarily be located on the central axis C. In such a case, in comparison with a case in which the third opening of ventilation 22 is located in the central axis C of the second chamber 5, the expulsion of the combustion fluid mixture into the interior of the second chamber 5 is restricted and, therefore, the fuel fluid mixture 7 which is found on the side of the second chamber 5 can be burned in a delayed manner. Therefore, a longer period of time required to complete inflation of the airbag can be adjusted.

(Fourth Form of Embodiment) Fig. 8 shows an arrangement of a gas generating apparatus according to the fourth embodiment. The same reference numbers are assigned to the same elements as in the third embodiment. A reference numeral 25 denotes a gas generating apparatus in the fourth embodiment. In the fourth embodiment, the second ventilation opening 11 of the partition wall 9a is provided on the entire surface of the wall with several third ventilation openings 26 by a mechanical perforation. It is also possible to provide the third ventilation openings 26 by making, at least a portion of the partition wall 9a, with a porous material, for example, sintered metal. The third ventilation openings 26 can be provided not only in the partition wall 9a, but also in the second occlusion member 12. In that arrangement, when the vehicle decelerates rapidly due to a collision or the like, the mixture of combustion fluid is introduced from the first chamber 9 into the interior of the air bag 3. as in the third embodiment. Meanwhile, at least a portion of the combustion fluid mixture inside the first chamber 9 is expelled in a direction perpendicular to the central axis C of the second chamber 5 through the various third ventilation openings 26. By a fluid mixture of combustion, the mixture of combustible fluid 7 inside the second chamber 5 begins to burn. In the present embodiment, because the dispersion of the combustion fluid mixture towards the central axis C is restricted, the fuel fluid mixture 7 on the side of the second chamber can be burned in a delayed manner. Therefore, in this case, a longer period of time required to complete the inflation of the air bag 3 can be adjusted. (Fifth Form of Embodiment) Fig. 9 shows an arrangement of an air bag apparatus in accordance with the fifth embodiment. The same reference numbers are assigned to the same elements of the third embodiment. A reference number 27 denotes an air bag apparatus of the fifth embodiment. According to this fifth embodiment, three ventilation pipes 28a as third ventilation opening 28 are provided at equal distances on the partition wall 9a, in such a way that the guide end openings 28b of the ventilation pipes 28a are directed in circular direction to the partition wall 9a, as shown in Fig. 10. With this arrangement, when the vehicle decelerates rapidly due to a collision or the like, the combustion fluid mixture is introduced from the first chamber 9 to the air bag 3. Meanwhile, at least a portion of the mixture of fuel fluid 7 held in the first chamber 9 was introduced into the second silage chamber 5 in its syringe direction through the third ventilation openings 28. In the present form of realization, because the dispersion of the mixture of the synergy fluid to the sentral axis C is restricted, the mixture of the synergistic fluid 7 That it is ensued on the side of the second chamber 5 can be burned in a delayed manner. Therefore, in this case, a longer period of time required to inflate the airbag 3 can be adjusted. It should be noted that the number of sites of the air vent vents 28 should not be limited to three, and may be proportionate. in any number of sites. In the present embodiment, vent tubes 28a are provided. However, the vent tubes 28a can be omitted by arranging the air vent openings 28 in such a manner that the axes of their openings expel the mixture of the symotrust fluid in a syringe direction. (Sixth Embodiment) Fig. 11 shows an arrangement of a sonic air bag apparatus are the sixth embodiment. The same referensia numbers are assigned to the same elements of the third form of realization. A referensia number 31 denotes a sonic air bag apparatus are the sixth form of realization. In this embodiment, the second vent opening 11 is latched on the long axis L and the sentral axis C of the second chamber 5. The third vent opening 22 is provided in the direction of the second ossification member 12 which saw the second opening of ventilation 11. In this case, a messanism of diverting tray 33 of flow is arranged on the side of the second chamber 5 or of the terrestrial ventilation opening 22. As shown in FIG. 12, the mesanism of deviation of the trajectory of flow 33 comprises a cirsular metal plate 331 are smaller diameter than the second venting opening 11, and three leg members 332 disposed on a surface of the sirsular metal plate 331. The members of pta 332 extend to the outside, and their end portions are more bent outwards, in parallel they are respects the sirsular metal plate 331. These pawl members 332 are joined by the wall of separation 9a to horsajadas of the second ossification member 12. With this arrangement, the vehicle is quickly stripped due to a solidation or the like, the mixture of symombing fluid was introduced into the second chamber 5 through the third ventilation opening 22 which is located in the central axis C and in the long axis L of the second chamber 5. The combustion fluid mixture is expelled towards the central axis C and the long axis L of the second chamber 5. The mixture of smashing fluid shosa is there the metal plate 331 there, and the flow tray is deflected. That is, the mixture of the synergy fluid is guided to the long axis S of the second chamber 5. In the present sixth embodiment, the dispersion of the combustion fluid mixture is restricted and, therefore, the mixture of fuel fluid 7 which is on the side of the second chamber 5 can be burned in a delayed manner. Therefore, in this case, a longer period of time required to complete inflation of the air bag 3 can be adjusted. (Seventh Form of Embodiment) Fig. 13 shows an arrangement of an air bag apparatus in accordance with the seventh embodiment of the invention. The same reference numbers are assigned to the same elements of the third embodiment. A reference number 40 denotes an air bag apparatus of the present embodiment. The center of the occlusion member 12 is located on the central axis C and the long axis L of the second chamber 5, and the third ventilation opening 22 is provided therein. flow path deflection mechanism 36 is disposed near the third vent opening 22 on the side of the second samara 5. The diversion mesanism of the flow path 36 comprises a ring member 361, a siren member 362 and an arm 363 is shown in Fig. 14. The diameter of ring member 361 is substantially equal in length to the supporting axis S of the second chamber 5. The siren member 362 is located at the end of the ring member 361 by arms 363. The diverting mesanism of the flow tray 36 is disposed and joined opposite an upper wall of the first chamber 9, and the symmetrical member 362 is arranged in such a way as to oppose the third air opening 22. It is preferable that the syringe member 262 be smaller than the second ventilation aperture 11. With this arrangement, the vehicle is quickly stripped due to a solidation or the like, the messl The combustion fluid contained in the first chamber 9 was introduced into the air bag 3 as in the embodiment embodiment. At least a portion of the mixture of sombustine fluid held in the first chamber 9 was introduced to the second silane chamber 5 through the third ventilation opening which is located in the central axis C and the long axis L of the second one. Samara 5. The mixture of combustion fluid is expelled towards the central axis of the second chamber 5, and collides against the circular member 362 of the deflection mechanism of the flow path 36, so that the flow path is deflected. That is, the combustion fluid mixture is guided in a short axis direction S of the second chamber 5. In the present seventh embodiment, the dispersion of the fluid mixture is restricted and, therefore, the mixture of fuel fluid 7 on the side of the second chamber can be burned in a delayed manner. Therefore, in this case, a longer period of time required to complete the inflation of the air bag 3 can be adjusted. (Eighth Embodiment) Fig. 15 shows an arrangement of an air bag apparatus in accordance with the eighth embodiment of the invention. The same referensia numbers are assigned to the same elements of the third form of realization. A referensia number 50 denotes an air bag apparatus of the present embodiment. In this form of realization, there are arranged in the second chamber 5 a plurality of separation pans 52 which operate as a deviation mesonism from the flow path at a constant distance from each other in the direction of the long axis L of the second chamber 5. The separation plates 52 separate the the second chamber 5 in several combustion blocks bl, b2, b3, b4 and b5. The separation plates 52 are formed with communication holes 53 to communicate the combustion blocks bl a b5 with each other. The commutating holes 53 are formed in such a way that they are sompensed in a dorsal direction from the side of the separating plasters 52, and the adsorbing somersaffing orifices 53 also sompensed together. With this arrangement, if the vehicle is rapidly stripped due to a solidation or the like, the mixture of sombustine fluid held in the first chamber 9 was introduced into the air bag 3. In the meantime, at least one portion of the fluid mixture The second samara 5 was inserted through the third vent opening 22. The mixture of the symombing fluid comprises the mixture of non-combustible fluid contained in the second chamber 5. In the present embodiment, the second chamber 5 it separates into several blocks of sombustión bl, a b5 by means of the several separation plates 52. In addition, the combustion blocks bl a b5 are somunized in zigzag through the somunisation orifisium 53. Therefore, the flow tray is diverted within the second samara 5 and, as a result, sustainably increases the length of the flow tray within the second samara. In addition, the separating plasters 52 can also operate as cooling members for the mixture of sombustive fluid which cool the mixture of high-temperature sombusting fluid expelled from the first chamber towards the second chamber.

At least two of the communicating holes 53 can be arranged on the same subtraction line. In addition, the communicating orifices 53, arranged on the same subtracted line, can also be arranged on the sentral axis C of the second samara 5. In these cases, the period of time required to burn the fluid mixture can be shortened in this order. combustion within the second chamber 5. In addition, at least one of the separation plates 52 can be formed with several communication holes 53. (Ninth Embodiment) Fig. 16 shows an arrangement of an air bag apparatus according to the ninth embodiment of the invention. The same reference numbers are assigned to the same elements of the third embodiment. A referensia number 65 denotes an air bag apparatus of the present embodiment. In this embodiment, a cover body (or dome body) 66, formed of metal mesh, is mounted around a guide end of the second chamber 9 projecting to the second chamber 5. The cover body 66 is mounted in the separating wall 9a of the first chamber 9 by welding or the like. With this arrangement, when the vehicle is decelerated rapidly due to a collision or the like, the mixture of combustion fluid contained in the first chamber 9 is introduced into the air bag 3. Meanwhile, at least a portion of the fluid mixture of sombustión was introduced to the second chamber 5 through the terrestrial vent opening 22, which is formed in the second ossification member. The mixture of the synergy fluid comprises the mixture of the non-combustible fluid contained in the second chamber 5. In this case, the following steps are taken. First, the lid body 66 is mounted in an outlet of the first chamber 9 on the side of the second chamber 5 and, therefore, the mixture of the flammable fluid 7 burns inside the lid body 66. Second, the entire chamber of combustible fluid 7 maintained in the second chamber 9 is burned from below. Therefore, the flashiness of the mixture of the fuel fluid 7 within the second chamber 5 can be appropriately delayed to lengthen the combustion time. In addition, the lid body 66 can also function as a cooling member for the mixture of sombustine fluid which cools the mixture of high temperature sombusting fluid extruded from the first chamber to the second chamber. In each of the sixth to eighteenth embodiments, the flow path deflection mechanism and the cooling member of the symotrusion fluid mixture of these embodiments can be used in combination, and can be provided in either the first or second sámara, or in both cameras. In addition, the lid body 66 can be a metallic wire. It is preferable that the metallic wire 71 is made of a material that does not burn, and that has a sufficient diameter so that it does not melt or burn. The metal wire can be mounted only close to the first chamber 9 or the third ventilation opening 22, or it can be provided to cover the entire interior space of the second chamber 5, or to have a uniform or arbitrary density gradient. Additionally, as a cooling member of the combustion fluid mixture, a material which prevents a latent heat by endothermic effect or change in phase can be arranged in the first chamber 9 and in the second chamber 5. Examples of the material are calcium hydroxide, magnesium hydroxide, sodium sarbonate hydrate. These materials absorb salor from the mezsla mix of high temperature sombustine fluid to generate gas and, therefore, work to decrease the temperature of the mixture of sombustión fluid. Examples of other means for cooling the temperature of the combustion fluid mixture are a filter 72, made of metal mesh, the modular box 2 and the diffuser 15. An endothermic material can be added to these media. Figs. 17 to 23 show the tenth to thirteenth embodiments. These embodiments include mechanisms for controlling the inflation status of the airbag in accordance with various conditions., for example, a position of a seated passenger, a body difference, and the like. (Bad Form of Realization) Figs. 17 and 18 show an arrangement of a gas generating apparatus for the air bag apparatus in accordance with the tenth embodiment. This gas generating apparatus is arranged in such a way that a longitudinal axis thereof is directed vertically to a resorption direction of the vehicle. In Fig. 17, a reference number 155 denotes a gas generating apparatus that includes a first chamber 155A having a small volume and a second chamber 155B having a large volume. A reference number 1515 denotes a diffuser having several fluid diffuser ports 1516. The first samara 155A includes a first vent opening 101, a first integrally-proportioned ossification member 102 is mounted on the sual 103, for sawing the first venting aperture 101. The first 103 includes a portion 103a in the first samara 155A. The ignition 103 shows the mixture of the synergy fluid within the first chamber 155A upon receiving a signal from the ignition syringe, which is not shown. The teach 103 and the first ossification member 102 may be separate parts. The first and second chambers 155A and 155B are separated by a partition wall 104. The partition wall 104 is provided at its central portion with a second ventilation opening 105. A reference number 106 denotes a third ventilation opening for introducing a mixture. of combustion fluid in the second chamber 155B. The second vent opening 105 is serrated by a second ossification member 107 on the side of the second chamber 105A. The third vent opening 106 is capable of opening or closing through a sealing member 108 which constitutes a member that moves inertially on the side of the second chamber 155B. As shown in Fig. 18, the sealing member 108 is formed substantially L-shaped, and one end thereof is pivotally supported by the partition wall 104 through a rotating bolt 126, such that the sealing member 108 can rotate about the rotary bolt 126. It should be noted that the shape of the sealing member 108 is not limited to the L-shape, and the shape can be changed in various ways only if it has the same mechanism. As shown in FIG. 18, a first and a second capper pins 127 and 128 are mounted on the partition wall 104 on opposite sides of the third ventilation opening 106, respectively. A range or range of movement of the obturator member 108 is limited by the stopper pins 127 and 128. More specifically, as shown in Fig. 18, the obturator member 108 is put in a stasis at its central portion of a lateral end against the First capper pin 127, and displaced, from a position in which shutter member 108 completely opens the third vent opening 106, had a sersana diress to the latter. If the terrestrial vent opening 106 is completely serrated, the mixture of sombusting fluid can not be introduced into the second chamber 155B. Therefore, a minimum opening area is secured by using the second plugging pin 128 so that the sealing member 108 can not completely close the third venting opening 106. A fixing pin 129 for sheet spring is also mounted on the wall of the opening. Separation 104 is shown in Fig. 18. A leaf spring 130 is interposed between the fixing pin 129 for leaf spring 129 and the sealing member 108, so that the sealing member 108 is normally in a stannate are the first pin capping 127 to maintain the third vent opening 106 in its fully open state. Furthermore, in order to prevent slackening or loosening of the sealing member 108, each of the pins 127, 128 and 129 is provided with a space, to such an extent that the movement of the sealing member 108 is not impeded, and in which a ring-shaped obturator supporting plate 121 is mounted.

The operation of the tenth embodiment will be described with reference to Fig. 18. When the car collides, an inertial force is applied to the obturator member 108, which is a velocity and a driving direction. By the inertial force, the sealing member 108 moves in a direction to decrease the opening area of the third ventilation opening 106 (in the direction of the flesha A of FIG. 18) around the rotating pin 126. On the one hand , in a manner that is simultaneously simultaneous, the teach-in 103 shows the mixture of the synergy fluid held in the first chamber 155A upon receiving a signal from a teaching syringe that is not shown. A pressure within the first chamber 155A is rapidly increased by the heat generated from combustion, to rupture the first occlusion member 102. Thereafter, the mixture of the synergy fluid within the first chamber 155A is passed through the first chamber 155A. the vent opening 101 and the diffuser 1515 and is inserted into the air bag that is not shown. On the other hand, at least a portion of the combustion fluid mixture generated in the first chamber 155A is passed through the third vent opening 106 which is reduced by the shutter member 108, and is introduced into the first chamber 155B. The second occlusion member 107 is broken by a pressure difference between the first and second chambers 155A and 155B and then, the mixture of combustion fluid within the second chamber 155B is passed through the second vent opening 105, the first vent opening 101 and the diffuser 1515, and introduced into the air bag. In this way, the shape of the sonformity is the dimas, the shutter member 108 controls the opening area of the third venting aperture 106 of the sonformity are the velosity of the car's release, to vary the velocity that increases the pressure within the the first samara 155A, thus checking the inflated state of the airbag. Therefore, it is possible to inflate and haser to the air bag of soundness with the speed of the solution. (Nth Form of Realization) Fig. Shows a layout of a gas generating apparatus for an air bag apparatus according to the tenth embodiment. The gas generating apparatus is arranged in such a way that its longitudinal direction is parallel to the resorption direction of the automobile. In Fig. 19, a referensia number 165 denotes the gas generating apparatus that includes a first samara 165A having a small volume and a second samara 165B having a large volume. A diffuser 1615 includes several fluid ejection ports. The first samara 165A includes a first venting opening 211. A first ossification member 212 integrally provided is an array 213 is mounted on the first vent opening 211 to close the latter. The ignition 213 includes a portion of the ignition 213a and is inserted into the vent opening 211, such that the ignition portion 213a is located within the first chamber 165A. The teach 2113 shows the mixture of the synergy fluid within the first samara 165A upon receiving a signal from a siren of 1624. The first chamber 165A includes a bottom wall that is located within the second samara 165B, and the bottom wall is The shape is a nozzle 214 which serves as a ventilation opening. Mounted in the first chamber 165A is a separation member 216 which cooperates with a leaf spring 215 to form an inertially moving member. The separating member 216 is soup-shaped, and is capable of sliding within the first samara 165A. The separating member 216 is provided in its sentral portion with a lower surface of a second venting opening 217 that is unisex is the nozzle 214. The second venting opening 217 is serrated by the second occlusion member 218. separation 216 further includes a third ventilation opening 219. Inside the first chamber 165A, the leaf spring 215 is arranged on the side of the second ventilation opening 217. Next, the operation of the eleventh embodiment with referensia to Fig. 29 will be explained. At the moment of the soldering of the automobile, a force inertial is applied to the separating member 216 in the resorption direction. The separating member 216 moves to the set 213 by the inertial force that corresponds to a degree of the solidation while squeezing the leaf spring 215, thereby reducing the volume of the first samara 165A. Substantially simultaneously, the serving portion 213 shows the mixture of the synergistic fluid within the first samara 165A by a subsequent signal from the sirsuite of 1624. At that time, because a volume of the mixture of the synfuelous fluid was redistributed within of the first samara 165A, the veil that increases the pressure in the first samara 165A increases rapidly. As a result, the first ossification member 212 breaks more quickly. The mixture of combustion fluid within the first chamber 165A is passed through the first vent 211 and the diffuser 1615, and introduced into the air bag that is not shown. In the meantime, at least one portion of the mixture of sombust fluid within the first samara 165A was passed through the third vent opening 219 and introduced into the second chamber 165B. The mixture of sombustine fluid shows the mixture of combustible fluid within the first chamber 165B. As a result, the second ossification member 218 is broken by a pressure difference generated between the first samara 165A and the second samara 165B. The combustion fluid mixture is passed from the second vent opening 217 through the first vent opening 211 and the diffuser 1615, and is introduced into the air bag. Thus, in accordance with the eleventh embodiment, the response time required to initiate inflation of the air bag can be controlled by reducing the volume of the first chamber 165A accordingly a degree of collision. (Twelfth Form of Realization) Fig. 21 shows a disposition of a gas generating apparatus for a air bag apparatus of sonicity with the twelfth embodiment. The gas generating apparatus is arranged in such a way that its longitudinal direction is vertically directed to the resorption direction of the automobile. In Fig. 21, the gas generating apparatus 175 includes a first chamber 175A having a small volume and a second chamber 175A having a larger volume. A diffuser 1715 includes a plurality of fluid ejection ports 1716. The gas generating apparatus 175 is provided at one end with a second vent opening 321 that is serrated by a second ossification member 322. The first vent port 323 is provided with a first ossification member 324. The first ossification member 324 integrally formed is an array 311. The array 311 includes an array portion 311a that is delivered within the first chamber 175A. The set 311 is arranged to expose the fuel fluid mixture within the first chamber 175A upon receiving a signal from a siren of set 1734. The first samara 175A is disposed along a leading axis of the gas generating apparatus 175. First samara 175A is provided on its periphery wall with several air vent openings 312 directed towards the longitudinal direction of the second chamber 175B. Mounted in the first samara 175A there is a separating member 314 which serves as a sheet spring 313 for casting an inertially moving member. The separation member 314 is cup-shaped, and is capable of sliding within the first chamber 175A. The leaf spring 313 is disposed on the side of the one shown 311, and the separating member 314 is pushed and biased by the leaf spring 313, and fitted in the first chamber 175A. There, the separating member 314 is pressed into the peripheral wall of the second chamber 175B so that the separating member 314 does not move in a normal sonde. When a collision speed of the automobile is high and the separating member 314 is moved to minimize the volume of the first samara 175A, it is adjusted in such a way that the opening area of one of the venting openings 312 is secured at a previously determined value. The operation of the second form of realization will be broken down to sontinuasión. At the moment of the soldering of the automobile, an inertial force is aplimated to the separation member 314 in the resorption direction. The separating member 314 is moved to the selected one by the inertial force which corresponds to a degree of the soli? C while squeezing the leaf spring 313, thereby reducing the volume of the first chamber 175A thus the opening areas of the terrasses vent openings 312 which are latched to corresponding positions of separating member 314. Substantially simultaneously, the insulated portion 311a ignites the mixture of the synergistic fluid within the first chamber 175A by a subsequent signal from the sirsuite of set 1734. At this time, because a volume of the fuel fluid mixture within the first chamber 175A is redrawn, the rate of increase in pressure in the first chamber 175A increases rapidly. As a result, the first occlusion member 324 breaks more quickly. The mixture of combustion fluid within the first chamber 175A is passed through the first vent 323, and introduced into the air bag that is not shown. In the meantime, at least one portion of the mixture of sombust fluid within the first chamber 175A was passed through the third vent opening 312 and introduced into the second chamber 175B. The mixture of the synergy fluid comprises the mixture of the synergistic fluid within the second chamber 175B. A pressure within the second chamber 175B is increased by the sombust, and by adding the pressure to a predetermined level, the second ossification member 322 is broken. A mixture of the sombustine fluid generated in the second chamber 175B is passed through. the second vent opening 321 and inserted into the air bag. In this way, the sonosity is the second form of realization, both the volume of the first chamber 175A as the opening area of the ventilation openings 312 simultaneously decrease of sonicity are a degree of collision, thus controlling both the state of the sombustión in all the apparatus and the sarasteristisa of inflation of the airbag. In this embodiment, the various venting openings 26 312 are mounted separately to the first chamber 175A. Therefore, by varying its opening areas step by step, the inflation velocity of the air bag is step by step. Alternatively, a single vent opening 312 may be provided and formed in the form of a groove. In this case, the opening area can be varied continuously, thus controlling the inflation speed of the airbag continuously. (Thirteenth Embodiment) Fig. 22 shows a disposition of a gas generating apparatus for an air bag apparatus in accordance with the thirteenth embodiment. The gas generating apparatus is arranged in such a way that its longitudinal direction is directed vertically with respect to the resorption direction of the automobile. In Fig. 22, a referensia number 185 denotes a gas generating apparatus that includes a first chamber 185A having a small volume and a second chamber 185B having a large volume. volume. A reference number 1815 denotes a diffuser mounted at one end of the second chamber 185B. The diffuser 1815 includes several fluid ejection ports 1816. The first chamber 185A includes a first vent opening 711 and a separator wall 704. The separator wall 704 includes a second vent opening 712 and a third vent opening 713. The second vent opening 712 is closed by an occlusion member 1714. A bushing 732 is fixed to a sentral portion of an upper plate 731 of the diffuser 1815, and at least one fluid dessirga orifisio 733 is formed around the hub 732. The bushing 732 is mounted on an inner side of the top plate 731 and, as shown in Fig. 23, the plate of sieve is provided. of a sealing member 734 that may be rotated about the sentral portion of the upper plate 731 by inertial force. The sealing member 734 is provided with a plating material, and is provided on opposite sides of the fluid recessing orifisium rotating shaft 735 which are aligned with the fluid reloading orifices 733 of the upper platen 731. In a normal state, the Fluid dessugaring orifisions 735 of sealing member 734 are aligned are the fluid desorbing orifisions 733 of upper plate 731 to maintain a fully open state. The normal position is maintained by a stopper pin 735 and a pin 737 for a leaf spring. An array 715 is inserted into the bushing 732 of an upper plate 731, while leaving a small free spacing between them. The first ossification member 716 saw the first vent opening 711 of the first chamber 185A. The instruction 715 includes a teaching portion 715a within the first samara 185A. The display 715 is shown to a teaching wrist that is not shown, and shows the mixture of combustible fluid within the first chamber 185A by a subsequent signal from the firing syringe. In continuation, the operation of the desimotersera form of realization will be explained. At the moment of the soldering of the car, the gas generating apparatus is operated, the shutter member 734 is rotated (moved) (in direction of the flesha B of Fig. 23) in a spring of a spring force Reed 738 are a hit (or inertial force). As the sealing member 734 is moved, all or a portion of the fluid reloading orifices 733 of the upper plate 731 of the diffuser 1815 that had been opened per full are closed. More specifically, when the stroke is equal to or greater than a predetermined set value, the shutter member 734 moves until the movement is restrained by the stopper pin 736. That is, the fluid reloading orifices 733 of the top plate 731. they are completely serrated, and the mixture of sombustine fluid was introduced from the first venting opening 1816 to the air bag. When the stroke is less than the previously determined set value, the amount of movement of the sealing member 734 varies accordingly. Because the fluid dessirga orifisiums 733 of the upper plate 731 and the fluid recessing orifisions 735 of the sealing member 734 are not aligned, the fluid reloading orifices 733 of the upper plate 731 are partially opened. Therefore, the fluid, in a sanctity corresponding to the opening areas, is dislodged in an air bag unit, thus adjusting the sanctity of fluid to inflate the air pocket. At the time when the first ossification member 716 is opened, the array 715 is pushed to the upper plate 731 of the diffuser 1815 by the mixture of high pressure symotrusion fluid to spread the bushing 732 out, and is supported. An opening of the hub 732 is spread outwardly by the insertion of the ignition 715 of sonicity and, therefore, the rotation of the sealing member 734 is prevented and the sada opening area is maintained and one of the orifices of fluid dessarga 733. In accordance with the thirteenth form of embodiment, the upper plate 731 of the diffuser 1815 is provided with a sealing member 734 which is capable of controlling the aperture area of the desripga orifices of fluid 733 of sonification are a degree of dissolution, and the mixture of symombing fluid is relieved selesively, thereby checking the state of inflation of the air bag. Although the obturator member is rotated (or moved) of a sonformity it is a blow (or inertial force) in the present embodiment, the shutter member 734 can be rotated (or moved) by an elastomeric rotation mechanism. In this case, the mesosis of rotasión can be a mesanismo that detests a solisión of the automobile and rotates to the obturador member 734 of sonformidad they are the magnitude of the blow of the solisión. Alternatively, the mesanism may be a mesanism that previously detests the state of the passenger (that is, state a position of the passenger, if the passenger is an adult or a child), in such a way that rotates the obturator member 734 of sonformity they are the state. POSSIBILITY OF INDUSTRIAL UTILIZATION As it is apparent from the previously disassembled embodiments, the air bag apparatus of the present invention is of sonformity, it is possible to efffectively and quickly supply a mixture of sombustine fluid which is generated after a mixture of Fuel fluid burns sufficiently, and a period of time to complete the inflation of the airbag can be varied by varying ways with a simple structure. In addition, the present invention can provide an inflation sarasteristisa that sorresponde to several sondisiones at the time of the operation of the air bag apparatus.

Claims (45)

1. CLAIMS 1. A gas generating apparatus for an air bag apparatus comprising; a first chamber housing a fuel fluid and provided with a first vent opening communicating with an air bag; a second chamber that is larger than the first chamber and that houses a fuel fluid or an inert fluid; a first occlusion member for closing the first vent opening; and ignition mechanism to ignite the combustible fluid in the first chamber; wherein at least a portion of the fuel fluid contained in the first chamber is burnt, thereby discharging the fluid in the first and second chambers through the first vent opening to inflate the air bag. 2. A gas generating apparatus for an air bag apparatus according to claim 1, further including a second vent opening for communicating the first and second chambers together, and a second occlusion member for closing the second aperture. of ventilation, where the fuel fluid contained in the first chamber is burned, the first chamber being sustainably serrated. 3. A gas generator apparatus for a sonic air bag apparatus is claim 2, wherein the second occlusion member is provided outside of the first chamber. 4. A gas generating apparatus for an air bag apparatus according to claim 2, wherein the second ossusion member is provided within the first chamber. 5. A gas generator apparatus for a sonic air bag apparatus is claim 2, wherein the second ossusion member is formed to break more readily by a subsequent pressure of the second chamber than by a pressure from the first chamber. camera. 6. A gas generating apparatus for a sonic air bag apparatus is any of claims 2 to 5, wherein the first samara includes a third vent opening communicating with the second chamber, having the third vent opening. an opening area smaller than that of the second vent opening or a length greater than that of the second vent opening, or both. 7. A gas generating apparatus for a sonic air bag apparatus is claim 6, wherein the third vent opening is formed in a side wall of the first samara. 8. A gas generating apparatus for a sonic air bag apparatus is claim 6, wherein the terrestrial vent opening is formed in the second ossification member. 9. A gas generating apparatus for a sonicity air bag apparatus is claim 6, wherein the terrestrial vent opening is a free spasm formed between the second first chamber and the first chamber. 10. A gas generating apparatus for an air bag apparatus according to any of claims 1 to 9, wherein the first ossusion member is broken by an increase in pressure in the first chamber. 11. A gas generating apparatus for a sonic air bag apparatus is any of claims 1 to 10, wherein the second ossusion member ruptures within the first chamber and a pressure within the second chamber. 12. A gas generator apparatus for a sonicity air bag apparatus is claim 1, wherein the first chamber is provided at one end thereof with the first vent opening, and the other end of the chamber acquires a silíndrisa form, elongated and stress, and opens inside the second samara. 13. A gas generating apparatus for a sonic air bag apparatus is any of claims 1 to 12, wherein the first chamber is provided, on an extreme surface thereof to which the first ventilation opening is provided. , a gas diffuser member having several fluid diffuser orifices directed in a radial direction. 14. A gas generator apparatus for a sonicity air bag apparatus are any of claims 1 to 13, wherein the first samara or the second chamber, or both, includes an oxidant, or the oxidant and an inert gas. 15. A gas generator apparatus for a sonic air bag apparatus is claim 1, which additionally includes a third vent opening for communicating the first and second chambers together, and a sonar mechanism for monitoring a state of somunisasión of the third ventilation opening and a state of inflation of the airbag. 16. A gas generating apparatus for a sonic air bag apparatus is claim 15, wherein the control mechanism includes a shutter member for sawing the third vent opening between its fully open state and its minimum opening area, the shutter member maintains the terrestrial vent opening in the fully opened state in a normal state, saw the terrestrial vent opening, in such a way as to assume the minimum opening area suando the automobile shosa at high velocity and, in other cases, It functions to make the third vent opening assume a predetermined opening area between the fully open state and the minimum aperture area of the sonicity are a degree of compliance of the automobile. 17. A gas generating apparatus for an air bag apparatus according to claim 15, wherein the sonar mesanism includes a member that moves inertially mounted within the first chamber and moves in an axial direction of the chamber. First sámara, decreasing the member that moves inersially a volume of the first sámara of sonformidad are a degree of solisión at the moment of the solisión of the automobile. 18. A gas generating apparatus for a sonic air bag apparatus is claim 17, wherein the inertially moving member is deflected in a direction to maximize the volume of the first samara. 19. A gas generating apparatus for a sonic air bag apparatus is claim 17 or 18, wherein the first chamber is provided to extend into the second chamber in its axial direction.20. A gas generating apparatus for an air bag apparatus according to claim 17 or 18, wherein the first chamber is provided to extend in the second chamber in a direction substantially perpendicular to the axial direction of the second chamber. 21. A gas generator apparatus for a sonicity air bag apparatus are any of claims 17 to 20, wherein the terrestrial venting aperture is provided in plural in a side wall of the first samara at a previously determined distance one. from another in a longitudinal direction of the first chamber, the inertially moving member closes the previously determined number of third ventilation openings, in accordance therewith is a degree of compliance. 22. A gas generating apparatus for an air bag apparatus according to claim 21, wherein the inersially moving member maximizes the volume of the first chamber, and is predisposed in a position to open all the third openings of the chamber. ventilation. 23. A gas generating apparatus for a compliant air bag apparatus is claim 21 or 22, wherein the terrestrial vent aperture comprises a slot portion formed such that it extends in a longitudinal direction of the first chamber. . 24. A gas generating apparatus for a conventional air bag apparatus is claim 1, which additionally includes a desanga mesanism provided between the first vent opening and the air bag, for discharging gas to the outside, and a mechanism of sontrol to sontrolar a state of somunisation between the mechanism of dessarga and the outside, of sonformity are a previously determined sounding, in which the sonan mesanism is the state of inflation of the air bag. 25. A gas generating device for an air bag device of conformity are the claim 24, which additionally includes a port of dessarga, where the sonar mesanism includes a sealing mechanism to adjust the port of dessarga between its state completely open and its state completely serrated, the shutter member maintains the fully open state of the discharge port in a normal state, closes the discharge port completely when the car collides at high speed and, in other cases, adjusts to solosar to the port of dessarga in a previously determined open state, between the fully open state and the completely closed state, of sonformity are a degree of solidation of the automobile. 26. A gas generating apparatus for a sound bagging apparatus is claim 1, wherein the teaching mesanism includes a teaching portion extending into the first chamber, the first chamber being provided on a wall surface. inside of it, near the ignition portion with a sonvexa porsión. 27. A gas generating apparatus for an air bag apparatus comprising; a first chamber housing a fuel fluid and provided with a first vent opening communicating with an air bag; a second chamber that is larger than the first chamber and that houses a non-combustible fluid or an inert fluid; a first oslusion member for sawing the first vent opening; and a second vent opening for communicating the first chamber and the second chamber together; a second occlusion member for sawing the second venting opening; a third venting opening for somunating the first samara and the second samara together, the third venting opening having a smaller area than the venting opening or a length greater than that of the second venting opening, or both bland; and ignition timing to ignite the combustible fluid in the first samara; where at least one porsión of the combustible fluid in the first samara is burned by the mesanismo of, a fluid in the second chamber is burned or expanded, or both are bland, by means of the terrestrial vent opening, a fluid contained in the first chamber is discharged from the first ventilation opening, and the fluid contained in the second chamber is discharged from the first vent opening, through at least the second vent opening, thus inflating the air bag. 28. A gas generating apparatus for a sonic air bag apparatus is claim 27, wherein the terrestrial vent opening is formed in the sentral axis of the second chamber. 29. A gas generating apparatus for a sonic air bag apparatus is claim 27, wherein the terrestrial vent aperture is formed at a site offset from the sentral axis of the second chamber. 30. A gas generating apparatus for a sonic air bag apparatus is claim 27, wherein the longitudinal axis of the third vent opening is parallel to the sentral axis of the second chamber. 31. A gas generator apparatus for a sonic air bag apparatus is claim 27, wherein the longitudinal axis of the third vent opening is directed in a direction that intersperses the sentral axis of the second chamber. 32. A gas generating apparatus for an air bag apparatus in accordance with claim 27, wherein the second chamber acquires a silyar shape, and the longitudinal axis of the third vent opening is directed in the circular direction of the second chamber. . 33. A gas generating apparatus for a sonic air bag apparatus is claim 27, wherein the terrestrial venting aperture is provided in plural, the longitudinal axes of the venting vents are regularly directed, or irregularly directed in multiple diressions. 34. A gas generating apparatus for a sonic air bag apparatus is any of claims 27 to 33, which further includes a deflection mechanism of the flow tray to deflect a flow direction of an expelled fluid from the first samara to the second samara through the terrestrial vent opening. 35. A gas generator apparatus for a sonic air bag apparatus is claim 34, wherein the deviation mesanism of the flow path is selected from at least one projection, one plate, one maya and one wire. metal provided in the first chamber or in the second chamber, or both. 36. A gas generating apparatus for a sonic air bag apparatus is any one of claims 25 to 35, wherein a sum of soled areas of the venting openings is adjusted to a range of O.lOmm2 to 20. mm2 37. A gas generating apparatus for a sonic air bag apparatus is any one of claims 27 to 36, wherein a length of the venting aperture is adjusted in a range of 0.2 mm to 100 mm. 38. A gas generating apparatus for an air bag apparatus in accordance with claim 27, which additionally includes mesanismos of cooling of gas of sombustión, to cool a fluid expelled from the first samara to the second samara through the tersera Ventilation opening. 39. A gas generating apparatus for an air bag apparatus in accordance with claim 38, wherein the cooling mesanism of the flame gas is selesioned from at least one portion, plate, mesh and metal wire. proportionate in the first samara or in the second samara, or in both. 40. A gas generating apparatus for a sonicity air bag apparatus is any one of claims 27 to 39, wherein the second ventilation opening is adjusted to open when a predetermined period of time has elapsed after the operation of the ventilator is operated. ignition mechanism. 41. A gas generating apparatus for an air bag apparatus according to claim 40, wherein the second occlusion member is broken when a pressure within the first samara reaches a predetermined value. 42. A gas generating apparatus for a sonic air bag apparatus is claim 40, wherein the second ossusion member is broken mesially. 43. A gas generating apparatus for an air bag apparatus that is somprendered: a first samara which houses a non-combustible fluid and which has a first vent opening; and a second samara having a second vent opening and a terse vent opening; wherein a portion of the prod from the sombustión sreada in the first chamber is passed through the third ventilation opening and is introduced into the second chamber, and the products of combustion created in the first and second chambers are discharged from the first ventilation opening. 44. A gas generating apparatus for an air bag apparatus comprising: at least two chambers that can communicate with each other; and a fluid housed in at least one of the samaras is a non-combustible fluid, one of the two chambers provides the fuel fluid, and both fluids are discharged from the samara that the fuel fluid is provided with. 45. A method of inflation of an air bag that shadows a first samara and a second samara for burning a non-combustible fluid housed in at least the first samara for inflating the air bag is a mixture of fluid its pressure is raised by a increase in temperature due to the shading, the method comprising the steps of: turning on the fuel fluid contained in the first chamber; introducing, in the second chamber, at least one portion of a mixture of combustion fluid created in the training step; introducing, in the air bag, at least one portion of the mixture of sombustine fluid oreated in the training step; and introducing at least a portion of the combustion fluid mixture into the second chamber from the second chamber through the first chamber into the interior of the air bag.
2. EXCERPT OF THE INVENTION The present invention relates to a gas generating apparatus for an air bag apparatus mounted on a vehicle or the like to protect a passenger from the vehicle by charging gas into an air pocket interposed between the passenger and a passenger. inner member of the vehicle's camera, in such a way that the airbag inflates at the moment of a vehicle solidation. The gas generating apparatus for the air bag apparatus includes a first chamber 9 which houses a fuel fluid 7, and which is provided with a first vent opening 8 which is directed to the first chamber or; a first flux member 31 for sawing the first vent opening 8; and a teaching step 14 to teach the combustible fluid contained in the first chamber 9. By burning at least a portion of the combustible fluid 7 within the first chamber 9, the fluid contained in the first and second chamber 9 and 5 is discharged through the first venting opening 8 for inflating the air bag
3. 3. Therefore, the first ossusion member breaks rapidly to discharge a mixture of the combustible fluid in the first chamber, it is possible to boost the response time period inisial to start inflating the air bag.