CN110228441A - Gas generator and its manufacturing method and air bag - Google Patents
Gas generator and its manufacturing method and air bag Download PDFInfo
- Publication number
- CN110228441A CN110228441A CN201910551711.0A CN201910551711A CN110228441A CN 110228441 A CN110228441 A CN 110228441A CN 201910551711 A CN201910551711 A CN 201910551711A CN 110228441 A CN110228441 A CN 110228441A
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- China
- Prior art keywords
- packing
- coyote hole
- shell
- quick
- partition member
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 241000282470 Canis latrans Species 0.000 claims abstract description 96
- 238000012856 packing Methods 0.000 claims abstract description 81
- 238000005192 partition Methods 0.000 claims abstract description 53
- 239000000203 mixture Substances 0.000 claims abstract description 27
- 230000004888 barrier function Effects 0.000 claims description 32
- 238000001746 injection moulding Methods 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 229920000034 Plastomer Polymers 0.000 claims 1
- 239000007789 gas Substances 0.000 description 82
- 239000003380 propellant Substances 0.000 description 15
- 239000003814 drug Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003721 gunpowder Substances 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
- B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/276—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means to vent the inflation fluid source, e.g. in case of overpressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R2021/26011—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using a filter through which the inflation gas passes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R2021/26029—Ignitors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
- B60R21/264—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic
- B60R21/2644—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
- B60R2021/2648—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder comprising a plurality of combustion chambers or sub-chambers
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
The present invention relates to a kind of gas generator and its manufacturing method and the air bag including such gas generator.The gas generator includes shell, and the shell has exhaust outlet, filter is received in the shell, the shell and the filter jointly limit the charging room for receiving gas generant composition in accordance.The charging room is divided into the be arranged side by side on the axial direction of shell first packing coyote hole and the second packing coyote hole by partition member, the first packing coyote hole is equipped with the first cartridge igniter, the second packing coyote hole is equipped with the second cartridge igniter, second packing coyote hole can be with the first packing coyote hole unilaterally connected, the gas that can be generated in the first packing coyote hole can be discharged by the filter from the exhaust outlet, and the gas that can be generated in the second packing coyote hole can successively be discharged by the first packing coyote hole and by the filter from the exhaust outlet.Flexible gas output ratio may be implemented in the gas generator, and compact-sized, number of parts is few.
Description
Technical field
The present invention relates to a kind of gas generator, a kind of air bags and one kind for motor vehicle for manufacturing gas
The method of generator.
Background technique
Gas generator is widely used in security technology area, is especially applied in air bag.In addition, for example
It can also apply in belt with pre-load device.Air bag for motor vehicle generally includes gas generator and sends out with gas
The expandable airbag of raw device connection.When emergency occurs in operation for motor vehicle, such as collides or overturn, gas occurs
Device can be triggered and to generate a large amount of gas rapidly, and gas is filled into expandable airbag, and the airbag of expansion rises
To the effect of protection vehicle occupant.
In some gas generators, gas can be generated and gas generant composition in accordance point is quick-fried, this gas generator can be with
Referred to as firework type gas generator.In some gas generators, ignition charge can be arranged around igniter, wherein
Ignition charge can be ignited device and light, and the ignition charge then to burn leads to lighting and burning for gas generant composition in accordance.Ignition charge can be with production
Gas medicine in the same manner or is differently composed.Such as ignition charge can have better inflammability than gas generant composition in accordance.Occur in some gases
In device, it can be generated largely by mixing at least two components and by the chemical reaction of these back to back components
Gas.
Known single-stage gas generator and double-stage air generator in practice.Single-stage gas generator includes a powder charge
Room and a quick-fried device of point.When the quick-fried device of point is activated, it is received in the indoor gas generant composition in accordance of powder charge and is disposably all lighted.Twin-stage
Gas generator includes two packing coyote holes and two quick-fried devices of point, and one of packing coyote hole and one of quick-fried device of point form the
Level-one, another packing coyote hole and another quick-fried device of point form the second level.The first order and the second level can be quick-fried by point simultaneously, can also
It to be staggered in time is put quick-fried.Such as being equipped with there is the motor vehicle of the air bag of double-stage air generator to collide
In the case where, it, can be with time point gas explosion body generator if the very violent or to be protected occupant's physique of collision is larger
The first order and the second level；Conversely, can only be put quick-fried when the less violent or to be protected occupant's physique of collision is smaller
One of the first order and the second level, or be staggered the in time quick-fried first order in place and the second level.
One kind having tubular shell by practicing known double-stage air generator, and filter is received in the housing, shell with
Filter jointly limits charging room, a lesser tubular shell is arranged in the charging room, in the lesser tubular shell
The first packing coyote hole is limited between the biggish tubular shell of gas generator, limits second in the lesser tubular shell
Dispense coyote hole.Since the second packing coyote hole is nested in the first gun propellant separated loading charge chamber interior and due to needing to set in the first gun propellant separated loading charge room
A little quick-fried device is set, the volume of the second packing coyote hole is restricted.It is common in the first packing coyote hole and the second packing in practice
The output ratio of volumetric ratio between the coyote hole first order and the second level in other words is about 8:2.However in the design of air bag
It may expect different output ratios, such as 7:3 or 6:4.Such output ratio is realized in this double-stage air generator is
More difficult.
Patent document US8696023B2 discloses a kind of double-stage air generator comprising the first order and the second level, every grade of packet
Include oneself filter and exhaust outlet.This gas generator number of parts is more, and housing parts needs design more complexly, is not easy
Assembly, and can influence each other between two-stage, so that not pressing defined delay time there may be two-stage successively puts quick-fried wind
Danger.
Summary of the invention
From the prior art, the object of the present invention is to propose a kind of gas generator, a kind of safety for motor vehicle
Air bag and a kind of method for manufacturing gas generator, wherein gas generator structure is simple, can be neatly realized not
Same output ratio, and reliable operation.
By the first aspect of the present invention, it is proposed that a kind of gas generator, the gas generator include shell, the shell
With exhaust outlet, filter is received in the shell, the shell and the filter, which are jointly limited, produces gas for receiving
The charging room of medicine, the charging room are divided into the first gun propellant separated loading charge being arranged side by side on the axial direction of shell by partition member
Room and the second packing coyote hole, the first packing coyote hole are equipped with the first cartridge igniter, and the second packing coyote hole is equipped with the
Two cartridge igniters, the second packing coyote hole can be generated with the first packing coyote hole unilaterally connected in the first packing coyote hole
Gas can be discharged from the exhaust outlet by the filter, and the gas that can be generated in the second packing coyote hole can successively pass through the
One dispenses coyote hole and is discharged by the filter from the exhaust outlet.
In pressing gas generator of the invention, for the two-stage of gas generator, using common filter and jointly
Exhaust outlet, the number of parts of gas generator is less, and the shell of gas generator can be designed relatively simply.In addition,
It can be to avoid detrimental effect of the first order to work first to the second level lingeringly to work.In addition, passing through two gun propellant separated loading charges
Room is arranged side by side in the axial direction, and required output ratio can be neatly realized.
In the sense of the invention, ignition charge can be understood as the medicament directly acted on igniter；Gas generant composition in accordance can be with
The medicament that the ignition charge for being understood as to be burned is lighted；And cartridge igniter can be understood as the container for receiving ignition charge.
Ignition charge in terms of its ingredient and/or physical aspect can it is identical as gas generant composition in accordance ground or be differently composed.Such as point
Gunpowder can be identical as gas generant composition in accordance ingredient but finer, and therefore has better inflammability.
In the case where single-stage gas generator, ignition charge usually can have better inflammability than gas generant composition in accordance.Double
In the case where grade gas generator, the ignition charge of the first order usually can have better inflammability than gas generant composition in accordance；If second
Grade is designed to lingeringly trigger than the first order, then burning in the first stage can lead to the ignition charge of the second level at work
The inflammability of the ignition charge of the second level can be improved in the heating of cylinder, this heat up, it is thus possible to, the ignition charge of the second level can
To be constituted identically as gas generant composition in accordance, this can be advantageous in terms of cost.
In some embodiments, the partition member can have at least one penetrating part, and the penetrating part is equipped
Unidirectional barriers, the barriers can uniaxially end the air-flow from the first packing coyote hole to the second packing coyote hole.
In some embodiments, the penetrating part is configured to the through-hole of multiple distribution settings.In other implementation
In mode, the partition member can have gap between edge and the internal diameter of filter.
In some embodiments, the barriers are configured to the component of planar, it is preferable that the barriers setting
Partition member direction first dispense coyote hole side on, wherein the indoor pressure of the first gun propellant separated loading charge be more than second dispense
When the indoor pressure of medicine, the direction first that the barriers can be pressed in partition member dispense on the side of coyote hole and to
The penetrating part can be closed, in the indoor pressure of the first gun propellant separated loading charge pressure indoor lower than the second gun propellant separated loading charge, the barriers
It can be lifted from the side that the direction first of partition member dispenses coyote hole and so as to discharge the penetrating part.In other reality
It applies in mode, the barriers are configured to check valve.In other embodiment, the barriers are configured to soft
Property diaphragm, the partial region of the diaphragm is pasted on partition member, and the other movable region overlay of the diaphragm
The penetrating part.
In some embodiments, the barriers can have planar matrix and setting in the base for receiving
First opening of the first cartridge igniter and setting in the base for receiving the second of the second cartridge igniter to be open, described the
One opening and second opening at least one of equipped with guide edge.
In some embodiments, the partition member can be configured to cup part.
In some embodiments, the partition member can be pressed on the first cartridge igniter and the second cartridge igniter.
In some embodiments, the partition member can either directly or indirectly be pressed in its open side by the shell
Tightly.
In some embodiments, the gas generator may include the charging room for closing the cup part
Lid.
In some embodiments, the peripheral wall of the partition member at least partially can have gap with filter.
In some embodiments, the partition member can have protrusion, the direction of first cartridge igniter the
The end of two packing coyote holes is inserted in the recess portion of protrusion back side.
In some embodiments, first cartridge igniter and the second cartridge igniter can be arranged side by side at first point
In charging room.
In some embodiments, first cartridge igniter and the second cartridge igniter deviate from the second gun propellant separated loading charge at them
A little quick-fried device is respectively equipped on the end of room.
In some embodiments, the end that the direction second of the first cartridge igniter dispenses coyote hole is sealed by partition member
It closes.
In some embodiments, the end that the direction second of the second cartridge igniter dispenses coyote hole is passed through across partition member
Into the second gun propellant separated loading charge room.
In some embodiments, second cartridge igniter can be in the region for the end that it dispenses coyote hole towards second
In there is shoulder, the partition member is supported on the shoulder.
In some embodiments, the quick-fried device of each point can integrate in the quick-fried device module of a point, it is preferable that the quick-fried device of point
Module further includes the axial projections for the first cartridge igniter and the axial projections for the second cartridge igniter.
In some embodiments, the shell can have tubular protrusion, and the quick-fried device module of point can be pressed into institute
It states in tubular protrusion.In some embodiments, first cartridge igniter and the second cartridge igniter can be pressed into accordingly
In axial projections.
In some embodiments, the quick-fried device of each point can integrate in the quick-fried device module of a point, it is preferable that the quick-fried device of point
Module may include frame element, and the quick-fried device of each point can be by forming one, the modeling with frame element with plastic material injection molding
Expect that material forms injection molding body, the quick-fried device module of point has annular groove, and the annular groove is limited by frame element and inside on the outside
Side is limited by injection molding body, and the annular groove receives the tubular protrusion stretched out inwardly from the shell of gas generator.
In some embodiments, the frame element can have a bottom and first barrel, described
First barrel has the first ring shoulder, and the injection molding body has the second ring shoulder, and the first ring shoulder and the second ring shoulder are jointly
The slot bottom of the annular groove is formed, the first ring shoulder and the second ring shoulder are either directly or indirectly supported in the tubular protrusion.
In some embodiments, the quick-fried device module of the point further includes two the second barrels, second cylindrical portion
Divide and limits one of axial projections respectively.
In some embodiments, sealing ring can be set in the annular groove.
In some embodiments, carrying on the back with the first barrel in the bottom can be set in the ontology of the quick-fried device of point
From side on and surround with being injection molding body portion, there are two through-hole, the leads of the quick-fried device of point to pass through institute for the bottom tool
State through-hole.
In some embodiments, the injection molding body may include: one it is being received in the first barrel and with
The first cylindrical sections that the bottom and/or the first barrel are integrally connected, two be respectively received in the one of the bottom
The second cylindrical sections in a through-hole and two it is being respectively received in second barrel of the frame element and
And the third cylindrical sections being integrally connected with the bottom and/or the second barrel.
In some embodiments, the shell may include first shell component and second shell component.In some realities
It applies in mode, the first shell component is configured to cup part, and the second shell component is configured to cover
Shape component.
In some embodiments, the first shell component can have tubular protrusion device.In some embodiments,
The second shell component can have the exhaust outlet.
In some embodiments, two ends of the filter can be supported on the bottom and of first shell component
On the bottom of two housing parts.
In some embodiments, the first end towards first shell component of the filter can be with first shell
The bottom of component is separated by a distance, wherein the first shell component has multiple protrusions radially extending inwardly, the filter
First end be supported in the radial projection.
By the second aspect of the present invention, it is proposed that a kind of air bag for motor vehicle, the air bag includes can quilt
The airbag of inflation, the air bag include by gas generator of the invention, and the airbag can be with the gas generator
Exhaust outlet connection.
By the third aspect of the present invention, it is proposed that a method of for manufacturing gas generator, the method includes following
Step:
First shell component is provided, the first shell component has tubular protrusion；
The quick-fried device module of one point is pressed into the tubular protrusion, the quick-fried device module of point includes being used for the first ignition charge
The quick-fried device of point and the quick-fried device of point for the second cartridge igniter and the axial projections for the first cartridge igniter of cylinder and it is used for second
The axial projections of cartridge igniter；
First cartridge igniter and the second cartridge igniter are pressed into corresponding axial projections respectively with their first end
On；
Filter is encased in first shell component；
Ignition charge is loaded in the first cartridge igniter；
Dress fills out ignition charge in the second cartridge igniter；
Gas generant composition in accordance is loaded in the first gun propellant separated loading charge room；
Barriers are installed；
Partition member is installed；
Gas generant composition in accordance is loaded in the second gun propellant separated loading charge room；
Second shell component is pressed on first shell component, and second shell component and first shell component are connected
It connects.
In some embodiments, after loading gas generant composition in accordance in the second gun propellant separated loading charge room, and by second shell component
Before being pressed on first shell component, powder charge chamber cap closing the second packing coyote hole can be used.
In some embodiments, the step " installation barriers " may include: by barriers at first and second points
It is sleeved on the first and second cartridge igniters on the region of the end of direction the second packing coyote hole of grain.
In some embodiments, the step " installation partition member " may include: press fitting partition member, so that described
The end that the direction second of first cartridge igniter dispenses coyote hole is inserted in the recess portion of protrusion back side, and makes the separation
Component is supported on the shoulder.
Herein it is noted that the technical characteristic recorded in this application can be arbitrarily combined with each other, as long as they are not
It is conflicting.All technically feasible feature combinations are all the technology contents recorded in this application.
Detailed description of the invention
The present invention is further illustrated referring to specific embodiment with reference to the accompanying drawing.Schematical Brief Description Of Drawings
It is as follows:
Fig. 1 is the longitudinal section view by the gas generator of first embodiment of the invention；
Fig. 2 is the perspective view by the partition member of the gas generator of Fig. 1；
Fig. 3 is the perspective view by the barriers of the gas generator of Fig. 1；
Fig. 4 is the longitudinal section view by the gas generator of second embodiment of the present invention；And
Fig. 5 is the longitudinal section view by the gas generator of third embodiment of the present invention.
Specific embodiment
Illustrate the gas generator for pressing first embodiment of the invention with reference to Fig. 1~3 first below, wherein Fig. 1 is this
The longitudinal section view of gas generator, Fig. 2 is the perspective view of the partition member of the gas generator, and Fig. 3 is that the gas occurs
The perspective view of the barriers of device.
The gas generator includes shell, filter 3 is received in the shell, filter is normally constructed to tubular
's.The shell and the filter jointly limit the charging room 20 for receiving gas generant composition in accordance.The shell includes first shell
Body component 1 and second shell component 2, wherein the first shell component 1 is configured to cup part, and the second shell
Component 2 is configured to cover shape component.The first shell component 1 has tubular protrusion 7, and the second shell component 2 has
Exhaust outlet 6, the exhaust outlet are for example configured to slot or gas vent.Two ends of the filter 3 are supported on
On the bottom of one housing parts 1 and the bottom of second shell component 2.
The charging room 20 is divided into the first gun propellant separated loading charge being arranged side by side on the axial direction of shell by partition member 15
The packing of room 20a and second coyote hole 20b, the first packing coyote hole 20a are equipped with the first cartridge igniter 11, second packing
Coyote hole 20b is equipped with the second cartridge igniter 13.Second packing coyote hole 20b can dispense coyote hole 20a unilaterally connected with described first,
Wherein, as shown in Fig. 2, the partition member 15 has the through-hole 23 of multiple distribution settings, these through-holes can be by as shown in Figure 3
Barriers 16 uniaxially end.Therefore, the gas that can be generated in the second packing coyote hole 20b can successively pass through the first gun propellant separated loading charge
Room 20a and the gas that is discharged, but can generate in the first packing coyote hole 20a from the exhaust outlet 6 by the filter 3
It cannot oppositely enter in the second packing coyote hole 20b.
Partition member 15 can be configured to cup part.Partition member 15 can have opening 21, for so that lattice
Part 15 can be attached on an end of second point grain 13 with 21 sets of the opening.Optionally, second cartridge igniter 13 can
To have shoulder in the region of the end, the partition member 15 can be supported on the shoulder.Partition member 15 can be with
With protrusion 22, partition member 15 can be so fitted on an end of the first cartridge igniter 11, so that the first igniting
The end of cylindrantherae 11 is inserted in the recess portion of 22 back side of protrusion.Partition member 15 can be equipped with powder charge chamber cap 17, be used for
Close the second packing coyote hole 20b in other words of charging room 20.
As shown in figure 3, the barriers 16 are configured to the component of planar, the barriers 16 rest on lattice
The direction first of part 15 dispenses on the side of coyote hole 20a.The barriers 16 can have the matrix of planar and be arranged in matrix
In for receive the first cartridge igniter 11 first be open 24 and setting in the base for receiving the second cartridge igniter
13 the second opening 25, second opening 25 can be equipped with guide edge 26.Pressure in the first packing coyote hole 20a is super
When crossing the pressure in the second packing coyote hole 20b, the direction first that the barriers 16 are pressed in partition member 15 dispenses coyote hole
On the side of 20a and to close the through-hole 23.Pressure in the first packing coyote hole 20a is lower than the second packing coyote hole
When pressure in 20b, the barriers lifted from the side that the direction first of partition member 15 dispenses coyote hole 20a and to
Discharge the through-hole 23.
First cartridge igniter 11 and the second cartridge igniter 13 are arranged side by side in the first packing coyote hole 20a, described
First cartridge igniter 11 and the second cartridge igniter 13 are a little quick-fried in being respectively equipped on the end of the second packing coyote hole 20b for they
Device 12,14, the end that the direction second of the first cartridge igniter 11 dispenses coyote hole 20b are closed by partition member 15, the second igniting
The end that the direction second of cylindrantherae 13 dispenses coyote hole 20b passes through partition member 15 and is passed into the second packing coyote hole 20b.
The quick-fried device 12,14 of each point can integrate in the quick-fried device module of a point.The quick-fried device module of point includes frame element 8,
For the quick-fried device 12,14 of each point by forming one with plastic material injection molding and frame element 8, the plastic material forms injection molding body 18.
The quick-fried device module of point has annular groove, and the annular groove is limited and by the first barrel 9 of frame element 8 in inside on the outside
It is limited by the first cylindrical sections of injection molding body 18, the annular groove receives the tubular protrusion stretched out inwardly from the shell of gas generator
7, the especially described quick-fried device module of point can be pressed into tubular protrusion 7.
First barrel 9 has the first ring shoulder, and the first cylindrical sections of the injection molding body 18 have the second ring shoulder,
The first ring shoulder and the second ring shoulder are collectively form the slot bottom of the annular groove, the first ring shoulder and the second ring shoulder directly or
It is supported in tubular protrusion 7 indirectly.Sealing ring 19 can be set in the annular groove.
The quick-fried device module of point further includes for the axial projections of the first cartridge igniter 11 and for the second cartridge igniter 13
Axial projections.First cartridge igniter 11 and the second cartridge igniter 13 can be pressed into corresponding axial projections.Two
Axial projections can be limited by corresponding second barrel 10 of frame element 8, and second barrel 10 is arranged in institute
It states on the side opposite with the first barrel 9 of the bottom of frame element 8.
Frame element 8 can for example be made of metal or ceramics, can be put into togerther injection molding with quick-fried device 12,14 is put
It is molded in mold.Injection molding body 18 may include the through-hole of first cylindrical sections, two bottoms in frame element 8
The second cylindrical sections and two third cylindrical sections limited by the second barrel 10 in region.Second barrel 10
It can be the component part of the one of frame element 8, or be mounted on as individual component, be for example fitted in frame element 8
On.
Fig. 4 is the longitudinal section view by the gas generator of second embodiment of the present invention.By Fig. 4 embodiment with
Be by the main distinction of the embodiment of Fig. 1~3: filter 3 has reduced height；Partition member 15 is without such as Fig. 1 and 2
Shown in protrusion 22；The peripheral wall of the partition member 15 locally has gap with filter 3.Here, the filter 3
First end towards first shell component 1 and first shell component 1 bottom separated by a distance, wherein the first shell
Component 1 has multiple protrusions 5 radially extending inwardly, and the first end of the filter 3 is supported in the radial projection 5.
It in other respects, can be with the explanation of reference pair Fig. 1~3.
Fig. 5 be by the longitudinal section view of the gas generator of third embodiment of the present invention, the embodiment with by Fig. 1
The main distinction of embodiment is a little quick-fried device module.In embodiment shown in Fig. 5, the axial projections of quick-fried device module are put only
It is surrounded on Partial Height by the second barrel 10 of frame element, in other words, is existed by the injection molding body 18 that injected plastics material is formed
Exceed the second barrel 10 of frame element in the region of axial projections.It in other respects, can be with the explanation of reference pair Fig. 1.
It can easily be assembled by the gas generator of Fig. 1~5, can especially follow the steps below assembly:
First shell component 1 is provided, the first shell component has tubular protrusion 7；
The quick-fried device module of one point is pressed into tubular protrusion 7, the quick-fried device module of point includes being used for the first cartridge igniter
The quick-fried device 12 of 11 point and the quick-fried device 14 of point for the second cartridge igniter 13 and for the first cartridge igniter 11 axial projections and
Axial projections for the second cartridge igniter 13；
First cartridge igniter 11 and the second cartridge igniter 13 are pressed into corresponding axial direction respectively with their first end
In protrusion；
Filter 3 is encased in first shell component 1；
Ignition charge is loaded in the first cartridge igniter 11；
Ignition charge is loaded in the second cartridge igniter 13；
Gas generant composition in accordance is loaded in the first packing coyote hole 20a；
Install barriers 16, wherein by barriers 16 the first and second cartridge igniters 11,13 direction the second gun propellant separated loading charge
It is sleeved on the region of the end of room 20b on the first and second cartridge igniters 11,13；
Partition member 15 is installed；
Gas generant composition in accordance is loaded in the second packing coyote hole 20b；
With second packing of the closing of powder charge chamber cap 17 coyote hole 20b；
Second shell component 2 is pressed on first shell component 1, and by second shell component 2 and first shell portion
Part 1 connects.
It can according to need by the gas generator of Fig. 1~5 and activated with simultaneously or being in time staggered at work
Two-stage, or only activate wherein level-one.The first order for example including the first cartridge igniter 11 and first point of quick-fried device 12 can be first
Work, the second level then including the second cartridge igniter 13 and the quick-fried device 14 of second point can lingeringly work, to suit the requirements
Then real estate anger body, generated gas pass through exhaust outlet 6 and are for example filled into the airbag of unshowned air bag.It is described
Exhaust outlet 6 can be closed temporarily, these exhaust outlets 6 can be released when the indoor pressure of powder charge reaches scheduled threshold value
It puts.
In the above-described embodiment, the ignition charge in cartridge igniter can it is identical as the gas generant composition in accordance in charging room ground or
It is differently composed, such as ignition charge can have better inflammability than gas generant composition in accordance.It is possible that for example in cartridge igniter 13
In, placing in the region adjacent with quick-fried device 14 is put has preferable flammable ignition charge, and in remaining area of cartridge igniter 13
Ignition charge identical with gas generant composition in accordance is placed in domain.In addition it is also possible that the ignition charge in entire second cartridge igniter 13 can
To be constituted identically as the gas generant composition in accordance in the first packing coyote hole.For example, including the second cartridge igniter 13 and putting accordingly quick-fried
The second level of device 14 is designed to than including the first cartridge igniter 11 and putting the feelings that the first order of quick-fried device 12 lingeringly triggers accordingly
Under condition, burning in the first stage will lead to the heating of the second cartridge igniter 13, and the second cartridge igniter can be improved in this heating
The inflammability of ignition charge in 13, then with first packing coyote hole in gas generant composition in accordance it is identical constitute, in the second ignition charge
Ignition charge in cylinder 13 can be put quick-fried device 14 at elevated temperatures and reliably be lighted.In the case, in the second ignition charge
Ignition charge in cylinder 13 is referred to as " gas generant composition in accordance ".
Finally, it is noted that above-mentioned specific embodiment is used only for understanding the present invention, without to protection of the invention
Range is construed as limiting.To those skilled in the art, modification can be made on the basis of specific embodiment, these are repaired
Change without departure from protection scope of the present invention.
Claims (10)
1. a kind of gas generator, the gas generator includes shell, and the shell has exhaust outlet (6), in the shell
Middle receiving filter (3), the shell and the filter jointly limit the charging room (20) for receiving gas generant composition in accordance, special
Sign is that the charging room is divided into the be arranged side by side on the axial direction of shell first packing coyote hole by partition member (15)
(20a) and the second packing coyote hole (20b), first packing coyote hole (20a) are equipped the first cartridge igniter (11), and described second
Packing coyote hole (20b) is equipped the second cartridge igniter (13), and the second packing coyote hole (20b) can be with the first packing coyote hole
(20a) unilaterally connected, the gas that can be generated in the first packing coyote hole (20a) can pass through the filter (3) from the exhaust
Mouth (6) discharge, the gas that can be generated in the second packing coyote hole (20b) can successively pass through the first packing coyote hole (20a) and pass through
The filter (3) is discharged from the exhaust outlet (6).
2. gas generator according to claim 1, which is characterized in that the partition member (15) is worn at least one
Logical portion, the penetrating part are equipped unidirectional barriers (16), and the barriers can uniaxially end from the first packing coyote hole
The air-flow of (20a) to the second packing coyote hole (20b)；
Preferably, the penetrating part is configured to the through-hole (23) of multiple distribution settings；
Preferably, the barriers (16) are configured to the component of planar, and the barriers rest on the direction of partition member (15)
On the side of first packing coyote hole (20a), wherein the pressure in the first packing coyote hole (20a) is more than the second packing coyote hole
When pressure in (20b), the barriers can be pressed in the side of the first packing coyote hole (20a) of direction of partition member (15)
Above and so as to close the penetrating part, in the pressure in the first packing coyote hole (20a) lower than in the second packing coyote hole (20b)
Pressure when, the barriers can from partition member (15) direction first packing coyote hole (20a) side on lift and from
And the penetrating part can be discharged；
Preferably, the barriers (16) have planar matrix and setting in the base for receive the first cartridge igniter
(11) second for receiving the second cartridge igniter (13) of the first opening (24) and setting in the base is open (25), institute
State the first opening and second opening at least one of be equipped with guide edge (26).
3. gas generator according to any one of claim 1 to 2, which is characterized in that partition member (15) structure
Cause cup part；And/or
The partition member (15) is pressed on the first cartridge igniter (11) and the second cartridge igniter (13)；And/or
The partition member (15) is either directly or indirectly compressed in its open side by the shell；And/or
The gas generator includes the powder charge chamber cap (17) for closing the cup part；And/or
The peripheral wall of the partition member at least partially has gap with filter (3).
4. gas generator according to any one of claim 1 to 3, which is characterized in that partition member (15) tool
Have protrusion (22), the end of the second packing coyote hole (20b) of direction of first cartridge igniter (11) is inserted in protrusion
(22) in the recess portion of back side；And/or
First cartridge igniter (11) and the second cartridge igniter (13) are arranged side by side in the first packing coyote hole (20a), institute
State the first cartridge igniter (11) and the second cartridge igniter (13) distinguishing on the end of the second packing coyote hole (20b) at them
Equipped with quick-fried device (12,14) is put, the end of the second packing coyote hole (20b) of direction of the first cartridge igniter (11) passes through partition member
(15) it closes, the end of the second packing coyote hole (20b) of direction of the second cartridge igniter (13) passes through partition member (15) and is passed into
In second packing coyote hole (20b)；And/or
Second cartridge igniter (13) has shoulder in its region towards the end of the second packing coyote hole (20b), described
Partition member (15) is supported on the shoulder；And/or
The quick-fried device of each point (12,14) is integrated in the quick-fried device module of a point, and the quick-fried device module of point includes frame element (8), each point
For quick-fried device (12,14) by forming one with plastic material injection molding and frame element (8), the plastic material forms injection molding body
(18), the quick-fried device module of the point has annular groove, and the annular groove is limited and in inside by frame element (8) by injection molding body on the outside
(18) it limits, the annular groove receives the tubular protrusion (7) stretched out inwardly from the shell of gas generator；
Preferably, the quick-fried device module of the point is pressed on the tubular protrusion (7).
5. gas generator according to any one of claim 1 to 4, which is characterized in that the frame element (8) has
One bottom and first barrel (9), first barrel (9) have the first ring shoulder, the injection molding body (18)
With the second ring shoulder, the first ring shoulder and the second ring shoulder are collectively form the slot bottom of the annular groove, the first ring shoulder and
Two ring shoulders are either directly or indirectly supported on the tubular protrusion (7)；And/or
Sealing ring (19) are set in the annular groove；And/or
The quick-fried device module of point further includes for the axial projections of the first cartridge igniter (11) and for the second cartridge igniter (13)
Axial projections；And/or
The quick-fried device module of point further includes two the second barrels (10), and second barrel limits one of them respectively
Axial projections；And/or
First cartridge igniter (11) and the second cartridge igniter (13) are pressed into corresponding axial projections；And/or
The ontology of the quick-fried device of point (12,14) is arranged on the side of the bottom deviated from the first barrel and is infused
Plastomer (18) partly surrounds, and there are two through-hole, the leads (12a, 14a) of the quick-fried device of point to pass through described logical for the bottom tool
Hole；And/or
The injection molding body include: one it is being received in the first barrel (9) and with the bottom and/or the first cylindrical portion
The first cylindrical sections for being divided to (9) to be integrally connected, two the second column areas being respectively received in a through-hole of the bottom
Section and two it is being respectively received in second barrel (10) of the frame element (8) and with the bottom
And/or the second third cylindrical sections that is integrally connected of barrel (10).
6. gas generator according to any one of claim 1 to 5, which is characterized in that the shell includes first shell
Body component (1) and second shell component (2)；And/or
The first shell component (1) is configured to cup part, and the second shell component (2) is configured to cover shape component；
And/or
The second shell component (2) has the exhaust outlet (6)；And/or
Two ends of the filter (3) are supported on the bottom of first shell component (1) and the bottom of second shell component (2)
On；And/or
The first end towards first shell component (1) of the filter (3) and the bottom of first shell component (1) separate away from
There are multiple protrusions (5) radially extending inwardly from, wherein the first shell component (1), the first of the filter (3)
End is supported on the radial projection (5).
7. a kind of air bag for motor vehicle, the air bag includes the airbag that can be inflated, which is characterized in that described
Air bag includes according to claim 1 to described in any item gas generators among 6, and the airbag can be sent out with the gas
Exhaust outlet (6) connection of raw device.
8. a kind of for manufacturing according to claim 1 to the method for described in any item gas generators among 6, feature exists
In the described method comprises the following steps:
It provides first shell component (1), the first shell component has tubular protrusion (7)；
The quick-fried device module of one point is pressed on the tubular protrusion (7), the quick-fried device module of point includes being used for the first ignition charge
Cylinder (11) the quick-fried device of point (12) and for the second cartridge igniter (13) the quick-fried device of point (14) and be used for the first cartridge igniter (11)
Axial projections and be used for the second cartridge igniter (13) axial projections；
First cartridge igniter (11) and the second cartridge igniter (13) are pressed into corresponding axial direction respectively with their first end
In protrusion；
Filter (3) is encased in first shell component (1)；
Ignition charge is loaded in the first cartridge igniter (11)；
Ignition charge is loaded in the second cartridge igniter (13)；
Gas generant composition in accordance is loaded in the first packing coyote hole (20a)；
It installs barriers (16)；
It installs partition member (15)；
Gas generant composition in accordance is loaded in the second packing coyote hole (20b)；
Second shell component (2) is pressed on first shell component (1), and by second shell component (2) and first shell
Component (1) connection.
9. according to the method described in claim 8, it is characterized in that, second packing coyote hole (20b) in filling gas generant composition in accordance after,
And before second shell component (2) is pressed on first shell component (1), with the second packing of powder charge chamber cap (17) closing
Coyote hole (20b)；And/or
The step " installation barriers (16) " includes: the court by barriers (16) in the first and second cartridge igniters (11,13)
It is sleeved on the first and second cartridge igniters (11,13) on the region of the end of the second packing coyote hole (20b).
10. method according to claim 8 or claim 9, which is characterized in that
Second cartridge igniter (13) has shoulder in its region towards the end of the second packing coyote hole (20b), described
Partition member (15) has protrusion (22)；
The step " installation partition member (15) " includes: press fitting partition member (15), so that first cartridge igniter (11)
The end of the second packing coyote hole (20b) of direction be inserted in the recess portion of protrusion (22) back side, and make the lattice
Part (15) is supported on the shoulder.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910551711.0A CN110228441B (en) | 2019-06-25 | 2019-06-25 | Gas generator, method for manufacturing the same, and airbag |
| PCT/CN2020/091975 WO2020259157A1 (en) | 2019-06-25 | 2020-05-25 | Gas generator and manufacturing method therefor, and safety airbag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910551711.0A CN110228441B (en) | 2019-06-25 | 2019-06-25 | Gas generator, method for manufacturing the same, and airbag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110228441A true CN110228441A (en) | 2019-09-13 |
| CN110228441B CN110228441B (en) | 2024-04-16 |
Family
ID=67857330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910551711.0A Active CN110228441B (en) | 2019-06-25 | 2019-06-25 | Gas generator, method for manufacturing the same, and airbag |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110228441B (en) |
| WO (1) | WO2020259157A1 (en) |
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| CN112124245A (en) * | 2020-09-25 | 2020-12-25 | 均胜汽车安全系统(湖州)有限公司 | Bipolar gas generator for pyrotechnic safety airbag |
| WO2020259157A1 (en) * | 2019-06-25 | 2020-12-30 | 延锋汽车智能安全系统有限责任公司 | Gas generator and manufacturing method therefor, and safety airbag |
| CN112172734A (en) * | 2020-09-25 | 2021-01-05 | 均胜汽车安全系统(湖州)有限公司 | Gas generator for small injection molding type safety air bag |
| CN114312652A (en) * | 2020-09-28 | 2022-04-12 | 均胜汽车安全系统(湖州)有限公司 | Three-stage pyrotechnic gas generator |
| US20220268558A1 (en) * | 2019-07-12 | 2022-08-25 | Daicel Corporation | Gas generator |
| US11603072B2 (en) * | 2021-08-06 | 2023-03-14 | Autoliv Asp, Inc. | Dual stage inflator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102021123691A1 (en) * | 2021-09-14 | 2023-03-16 | Zf Airbag Germany Gmbh | GAS GENERATOR FOR A VEHICLE SECURITY SYSTEM, GAS BAG MODULE AND VEHICLE SECURITY SYSTEM AND METHOD OF OPERATING AN GAS GENERATOR |
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Also Published As
| Publication number | Publication date |
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| WO2020259157A1 (en) | 2020-12-30 |
| CN110228441B (en) | 2024-04-16 |
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