CN105555619B - Two-chamber cell-type airbag - Google Patents
Two-chamber cell-type airbag Download PDFInfo
- Publication number
- CN105555619B CN105555619B CN201480050175.1A CN201480050175A CN105555619B CN 105555619 B CN105555619 B CN 105555619B CN 201480050175 A CN201480050175 A CN 201480050175A CN 105555619 B CN105555619 B CN 105555619B
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- China
- Prior art keywords
- air bag
- separator
- limb
- shell
- gas
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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
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
-
- 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
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
- B60R2021/23324—Inner walls crating separate compartments, e.g. communicating with vents
-
- 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
- B60R21/23—Inflatable members
- B60R21/239—Inflatable members characterised by their venting means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
A kind of air bag, comprising: shell limits the inside of air bag；And separator, it is located in the inside, so as to the inside is divided into first chamber and second chamber.The separator includes body part and is attached at least one limb of the body part along edge.The separator is attached to shell, to be formed gas-tight seal between shell and body part and form gas flow channel between at least one described limb and shell.
Description
Cross reference to related applications
The U.S. Provisional Application No.61/865 submitted this application claims on August 12nd, 2014,095 priority, the U.S.
The complete disclosure of provisional application is incorporated to by reference herein.
Technical field
Embodiment described herein being related to a kind of airbag, the airbag in such as head-on crash or
It is filled with a gas during the emergency of side collision.More specifically, embodiment described herein be related to a kind of following passenger's peace
Full air bag: the airbag include the inside of air bag is divided into the separator of multiple chambers and be used to control chamber it
Between gas flowing room between aerating system.
Background technique
When vehicle airbag system is activated, expanding gas normally enters the first chamber of vehicle occupant safety air bag
Room then proceeds to the other chamber of the one or more being in fluid communication with first chamber.In certain situations, it is desirable to limit gas
Body from second chamber to first chamber in reflux, which filled from first chamber.This facilitate passenger with
The pressure in second chamber is maintained during the part contact of the airbag exterior of second chamber, to facilitate relatively longer
Period in buffering and protect passenger.Airflow control mechanism should be able to realize filled rapidly from first chamber second chamber (and
Any other chamber).In addition, the airflow control mechanism should also be to gas backstreaming shape in order to maintain the pressure in second chamber
Condition or the buffer brake difference for being intended to that gas is promoted to return in first chamber are promptly responded, this by take movement with incite somebody to action
The reflux is restricted to desired degree to carry out.
In view of these requirements, the improved method and machine of the gas flowing between the chamber for controlling air bag
Structure, there is constant demands.
Summary of the invention
Embodiment described herein one aspect, provide a kind of air bag.The air bag includes: shell,
The housing defining the inside of air bag；And separator, which is located in the inside, so that the inside to be divided into
First chamber and second chamber.The separator includes body part and is attached at least one valve of the body part along edge
Piece.The separator is attached to shell, gas-tight seal to be formed between shell and body part, and at least one described valve
Gas flow channel is formed between piece and shell.
Embodiment described herein other side, provide a kind of separator for air bag.The separation
Device includes body part, which has the first side, second side opposite with the first side and opening, which allows
Fluid communication between first side and second side.Hollow member is around the opening and is fixed to body part, so as at this
It is formed between component and body part gas-tight seal.The component is constructed such that: in response to the pressure ratio on wherein the first side
The big pressure difference of pressure in second side, the wall of the component are forced to separate, to allow to pass through the component to second from the first side
The transfer gas of side.The component is also configured such that: big in response to the pressure on the first side of pressure ratio in wherein second side
Pressure difference, the wall of the component are forced to contact with each other, to limit the transfer gas from second side by the component to the first side.
Detailed description of the invention
Fig. 1 be according to embodiment described herein passenger-side air bag (in swelling state) schematic perspective
Figure, which includes air bag separator and flow control valve mechanism.
Fig. 2 is the perspective view of a part of the air bag of Fig. 1, show including according to embodiment described herein valve
The air bag interior dividers of mechanism.
Fig. 2A is the perspective view of the valve embodiment of Fig. 2, and it is in the open state to show the valve.
Fig. 2 B is the perspective view of the valve embodiment of Fig. 2, shows the valve and is in close state.
Fig. 3 is the schematic plan view that could attach to the alternate embodiment of the separator inside air bag.
Fig. 4 A is the exploded view of separator embodiment shown in Fig. 3.
The side view of Fig. 4 B separator embodiment shown in assembled state, Fig. 3 the and Fig. 4 A.
Fig. 5 is another schematic plan view of separator embodiment shown in Fig. 3.
Fig. 6 is schematic side elevation of the Fig. 3 to separator shown in fig. 5 and valve, and wherein the valve is shown at opening
State.
Fig. 7 is schematic side elevation of the Fig. 3 to separator shown in fig. 5 and valve, and wherein the valve is shown at closing
State.
Another side view of Fig. 8 separator and valve embodiment shown in assembled state, Fig. 4 A.
Fig. 9 is the side view of Fig. 8, shows a part of the separator in folded state.
Figure 10 is the view of Fig. 9, shows the opening in separator, which allows upper chamber and the cavity of resorption of air bag
Flowing between room.
Figure 11 is according to the schematic of the passenger-side air bag of alternate embodiment described herein (in swelling state)
Perspective view, the passenger-side air bag include air bag separator and multiple flow control valves.
Figure 12 A is the front schematic view of embodiment shown in Figure 11, and it is in the open state to show the valve.
Figure 12 B is the front schematic view of embodiment shown in Figure 11, shows the valve and is in close state.
Figure 12 C in flattening or extension state, be incorporated into Figure 11 to Figure 12 B air bag embodiment in point
Every the plan view of device.
Figure 13 is the passenger-side air bag according to another alternate embodiment described herein (in swelling state)
Perspective schematic view, the passenger-side air bag include air bag separator and multiple flow control valves.
The separator of Figure 13 A in flattening or extension state, the air bag embodiment for being incorporated into Figure 13
Plan view, it also shows the separator flap portion that should be attached to air bag shell.
Figure 14 shows the cross-sectional plan views of embodiment shown in Figure 11 to Figure 12 B.
Figure 15 is the passenger-side air bag according to another alternate embodiment described herein (in swelling state)
Cross-sectional plan views, the passenger-side air bag include air bag separator and multiple flow control valves.
The separator of Figure 15 A in flattening or extension state, the air bag embodiment for being incorporated into Figure 15
Plan view.
Figure 16 is the enlarged view of a part of cross section shown in Figure 14.
Figure 17 is the passenger-side air bag according to another alternate embodiment described herein (in swelling state)
The cross-sectional plan views of a part, which includes air bag separator and multiple flow control valve mechanisms.
Figure 18 is the passenger-side air bag according to another alternate embodiment described herein (in swelling state)
The cross-sectional side view of a part, which includes air bag separator and at least one flow control valve.
Figure 19 is the passenger-side air bag according to another alternate embodiment described herein (in swelling state)
The diagrammatic cross-sectional view of a part, which includes air bag separator and multiple flow control valves.
Figure 19 A is the passenger-side air including air bag separator according to another alternate embodiment described herein
The diagrammatic cross-sectional view of a part of air bag (being in swelling state).
Figure 19 B is the diagrammatic cross-sectional view of Figure 19 A, shows the contact in response to occupant with air bag and is in and closes
The separator of closed state is open.
Figure 20 be include air bag according to an embodiment of the invention vehicle occupant protection system view.
Specific embodiment
In the description of several diagrams of all attached drawings, identical appended drawing reference indicates identical component.Though in addition,
Target value so is listed for the size of each feature described herein, it will be appreciated that, these values can be due to such as manufacturing
The factor of tolerance and slightly change, and these variation also embodiment described herein desired extent in.
The embodiment of the present invention is described below with reference to the accompanying drawings.Those skilled in the art will appreciate that being suitable for retouching herein
Airbag design, construction and many aspects of operation for the embodiment of the present invention stated.For example, United States Patent (USP) No.68886857,
No.7857347, No.8128124 and No.8322748 describe many such aspects, and their full content is by drawing
With but will not be incorporated herein in a restricted way.
Fig. 1 is the view of one embodiment of passenger-side air bag 10 (in swelling state).Substitute shown in FIG. 1
Capsule embodiment has the shell formed by three panels, and three panels are combined with each other to limit the inside of air bag.Tool
Body, the air bag by main panel 12, right side (when the air bag from seating position) panel 16 and with right side
The opposite formation of Left-Hand Panel 14 of panel 16.Each of side panel 14,16 is general plane (when air bag 10 expands
When).Left panel is connected with right panel and surrounds air bag 10 by main panel 12 wraps up (wraps around).As a result, interarea
The right hand edge of plate 12 is whole to be arrived along the connection of seam 72 (for example, by sewing up, suturing, viscosity is attached or other suitable modes)
Right panel 16, and main panel 12 left edge it is whole along the connection of seam 70 (for example, by sewing up, suturing or other are suitable
Mode) arrive left panel 14.
Main panel 12 has preceding collision side 20 and rear expansion side 22.Side panel 14,16 and main panel 12 be also combined with each other with
Mouth (mouth) 22a of air bag is limited, gas is injected into air bag by this mouthful of 22a.Surrounding air bag 10
After package, the end of main panel 12 combines at rear expansion side.In addition, expansion side 22 has slit (not shown) afterwards, this is narrow
Seam is dimensioned to receive expander (not shown), and may also include hole (not shown), which is dimensioned to receive spiral shell
Bolt (or other suitable fasteners), the bolt are configured to air bag 10 being fixed to body of a motor car (or other devices).
Define that the part of one or more panels in the panel 12,14,16 of upper chamber 102 (being hereinafter more fully described) may be used also
Inside it to include one or more ventilating part (not shown), with during passenger and air bag contact with each other by gas from
Upper chamber discharges in a controlled manner.
With reference to Fig. 1 and Fig. 2, separator 100 is sewed up along its periphery or is attached in another appropriate manner substitute
The inner surface of capsule main panel, air bag left panel and air bag right panel.Separator 100 has body part 100p, should
Body part 100p includes the first side 100a and second side 100b opposite with the first side.Separator 100 is attached to panel
Inner surface, it is gas-tight seal to be formed between separator and the panel being attached separator.Separator 100 will be in air bag
Part is first chamber or upper chamber 102 and second chamber or lower chambers 104.Panel 12,14 and 16 and separator 100 can
It is formed in known manner by costive or other suitable gas impermeable materials.
In the embodiments described herein, which is configured to by the way that expanding gas is received upper chamber 102
It is interior and be filled.A part of this gas is then transferred to lower chambers 104.Therefore, upper chamber 102 become air bag compared with
High pressure region, and lower chambers 104 are lower pressure regions.In alternative embodiments, the air bag can be configured to pass through by
Expanding gas is received in lower chambers 104 and is filled.A part of this gas is then transferred in upper chamber 102 to complete
The expansion of air bag.Therefore, in these embodiments, lower chambers 104 become the higher pressure area of air bag, and epicoele
Room 102 is lower pressure region.
Aerating system between room is additionally provided, to allow gas from the chamber of elevated pressures (in this embodiment for upper chamber
102) it is flowed into the chamber (being in this embodiment lower chambers 104) of lower pressure, and also limitation is from lower chambers 104 to epicoele
Reflux in room 102.In one embodiment, aerating system is that valve system 112 (schematically shows in fig. 1 and 2 between the room
Form out), which is incorporated into separator 100 or is operatively connected to separator 100, for controlling
Gas flowing between upper chamber processed and lower chambers.Valve 112 can have it is any amount of be suitble to controlled with manner described herein
The structure of gas flowing in air bag inside.
Can by control it is described opening 112a size and the valve structure snd size come control from upper chamber 102 to
Gas flow rate (flow rate) in lower chambers 104.In the embodiments described herein, which is check valve or check-valves,
It is configured to limitation gas and returns to the indoor reflux of epicoele from lower chambers.For this purpose, in a particular embodiment, which is configured to ring
It should be intended between lower chambers and upper chamber in the direction opposite with air bag filling direction (that is, from second chamber
Direction into first chamber) on push gas pressure difference generation and close.The response valve is in the closing of this pressure difference
Help to maintain pressure lasting for a long time in lower chambers.
In the embodiment shown in Fig. 2 to Fig. 2 B, which includes opening 112a, and opening 112a is provided as running
Fluid communication (that is, fluid communication between the first side of separator and second side) between upper chamber 102 and lower chambers 104.
The first end 113a of the hollow member 113 made of the material for the shape for being configured to pipe or column is stitched along the periphery of opening 112a
Separator 100 is closed or is attached in another appropriate manner, to surround or around opening 112a and in component 113 and described
It is formed between body portion gas-tight seal.Therefore, any gas in lower chambers 104 is flow to from upper chamber 102 by the 112a that is open
Body all passes through hollow member 113 and flow in lower chambers along the hollow member 113 via opening 195, and opening 195 is formed in
In the component free or the second end 113b not being attached.Component 113 is configured to respond to be greater than in wherein epicoele chamber pressure
The pressure difference of cavity of resorption chamber pressure and open and gas be quickly transferred to lower chambers 104 from upper chamber 102.Fig. 2A shows place
In this embodiment of the valve of opening state, wherein gas flows through component 113 along arrow " A " and enters in lower chambers 104, thus
It expands the pipe structure and maintains the opening state of the valve.In an illustrated embodiment, component 113 is generally cylindrical.So
And component 113 can have suitable or desired any cross sectional shape for specifically applying.In one embodiment, structure
Part 113 is separately formed with body part 100p, and is then attached together using any suitable method.Alternatively, component
113 can be formed integrally as single piece with the body part.
Generally, buffer brake difference is defined as pushing up gas from the side that second chamber returns in first chamber
Pressure difference, the gas are received in second chamber from first chamber.Component 113 is also configured in response to its middle and lower chamber pressure
It is poor greater than the buffer brake of epicoele chamber pressure and close, to limit the transfer gas for returning to upper chamber 102 from lower chambers 104.For
This, the length L of the component 113 extended from the separator is set ruler for the diameter of opening 112a or other related sizes
It is very little, so that the higher relative pressure gas in lower chambers 104 pushes (the arrow B in such as Fig. 2 B on the outer surface of the component
It is shown), the opposite wall so as to cause the component collapses towards each other and contacts with each other, and causes the material of the component 113 inside
It folds and gathers, so that the gas flow channel that the component provides in its open configuration to be closed to and be generated the closing shape of the valve
State passes through the component to the reflux in chamber 102 to limit gas.This makes it possible within the time of an elongated segment in the second chamber
Raised pressure is maintained in room 104.The component also has the sufficient length L for the size of opening 112a, to ensure
The wall of the component is collapsed or is closed, without forcing the component from the cavity of resorption of separator 100 due to drive-type buffer brake difference
Room side is entered in the upper chamber side of the separator by the 112a that is open.Fig. 2 B is shown in response on the ratio in lower chambers 104
Higher pressure in chamber 102 and this embodiment of the valve being in close state.
By providing the size of the component 113 and the 112a that is open as described herein, but also the size of the component can
It is optimised, to minimize the quantity of material for being used for the component, to minimize influence of the scantling to the response valve time.It can be with
Pass through the best ruler for analyzing or making to determine valve member 113 and the 112a that is open by testing repeatedly with test by known method
It is very little.
In a particular embodiment, when the separator due to airbag cushion and when full extension or extension, for having
The round separator opening 112a for the diameter for (containing boundary value) within the scope of 5mm to 10mm, the size L is in 20mm to 50mm's
(contain boundary value) in range.
As the pressure difference between described two chambers increases, the pressure for making valve material close the flow channel also increases
Greatly, so that the check-valves remains turned-off, even if it is also such for having relatively high pressure difference between the chamber.
Component 113 can be formed by material identical with any panel in separator 100 or panel 12,14,16, or
Component 113 can be formed by any other suitable gas impermeable material or a variety of gas impermeable materials.Component 113 is also configured to relatively
It is flexible, so that it can respond rapidly to the pressure difference between upper chamber as described above and lower chambers.
Fig. 3 to Figure 10 shows another embodiment of air bag chamber separator 200 and relevant valve 212.Herein
In embodiment, the separator and valve system are by costive or two general " t "-shaped parts of other suitable gas impermeable materials
214 and 216 form.The top section of " T " word of each material pieces (is 214a for material pieces 214, for material pieces
It is 216a for 216) form the attachment part of separator body part 200p and the separator, and the bar of each material pieces or bottom
Portion part (being 214b for material pieces 214, be 216b for material pieces 216) forms component 230, the component 230
It limits gas flow channel and extends from separator body part 200p.
Material pieces 214 and 216 be cut into identical size and it is mutually adjacent position so that their neighboring phase
Mutually alignment, as shown in Figure 4 B.Material pieces 214 and 216 are sutured to each other then along the first seam 220a and the second seam 220b
Or be otherwise suitably attached, it is gas-tight seal to be formed along these seams.Such as Fig. 4 B as it can be seen that the first seam 220a and
Each of two seam 220b extend each along the outer edge of the valve portion 214b and 216b of the part, and also along from valve portion
The bottom margin of the top section 214a and 216a of " T " word that the every side divided extends extend.
After along seam attachment, remaining top section not being attached of " T " word can be separated from each other simultaneously
It is unfolded or extends laterally, as shown in Fig. 3, Fig. 5 and Fig. 9 to Figure 10, forms the body part 200p of separator.These material pieces
The periphery for not suturing or not being attached or edge 290 and 292 then can be attached to previously described formation air bag appearance
Each panel 12,14 and 16, it is gas-tight seal to be formed between the top section and the exterior panel of " T " word.It is logical
The exterior panel for being attached to air bag in this way is crossed, the connected top section for being somebody's turn to do " T " word is combined with each other to be formed
Similar to the separator 200 of aforementioned separator 100.By the way that this separator 200 is attached to exterior panel, form as previously described
Air bag upper chamber 102 and lower chambers 104.Furthermore it is possible to see, the fabric pieces 214 and 216 between the seam
The non-attachment part in center is combined with each other and is formed the valve opening 212a of substantially " eyelet " shape, and valve opening 212a leads to analogous shape
Seal in part 230, it includes by the bar or bottom part interconnected of " T " word of material pieces 214 and 216 that this, which seals part 230,
The flow channel 231 that 214b and 216b is limited.Flow channel 231 allows the fluid between upper chamber 102 and lower chambers 104 to connect
It is logical.
The operation of valve 212 is substantially identical as the operation of valve 112 described hereinbefore with reference to Fig. 1 to Fig. 2 B.It can pass through
The structure snd size of the size and the valve that control opening 212a are controlled from upper chamber 102 to the gas in lower chambers 104
Flow velocity.Similar to valve embodiment 112 above-mentioned, valve 212 is check valve or check-valves, is configured to limitation gas from lower chambers
104 return to the reflux in upper chamber 102.In addition to this, which is also structured in response to becoming between lower chambers and upper chamber
Gas is pushed on the opposite direction of Yu Yu air bag filling direction (that is, direction in from second chamber to first chamber)
The generation of the pressure difference of body and close, so as to maintain pressure lasting for a long time in lower chambers.
Any gas that opening 212a enters in lower chambers 104, which is flowed through, from upper chamber 102 passes through the channel 231 simultaneously
It is flowed along channel 231, thus by being left in the free end for sealing part 230 or the opening 233 not being attached in end.Opening 233
It is configured to respond to be greater than the pressure difference of cavity of resorption chamber pressure in wherein epicoele chamber pressure and open and quickly by gas from epicoele
Room 102 is transferred to lower chambers 104.Fig. 6 shows this embodiment of the valve in the open state, and wherein gas is along arrow " A "
It flows through and seals part 230 and enter in lower chambers 104, therefore this is made to enclose the opening state that seal structure expands and maintains the valve.
It is also structured to be greater than the air bag of epicoele chamber pressure in response to its middle and lower chamber pressure moreover, sealing part 230
Pressure difference and close and limit the transfer gas returned in upper chamber 102 from lower chambers 104.For this purpose, sealing the length L ' of part 230
It is sized by the cross-sectional area or other relative dimensions relative to opening 212a, so that higher in lower chambers 104
Relative pressure gas pushes on the outer surface for sealing part, collapses and phase mutual connection towards each other so as to cause the wall for sealing part
Touching, and cause this to seal the material of part 230 and be folded inward and gather, so that this is sealed the gas that part provides in its open configuration
The closed state of the valve is closed and generated to body flow channel, seals part to the reflux in upper chamber 102 to limit gas by this.
This makes it possible to maintain raised pressure in second chamber 104 within the time of an elongated segment.
This seals part also and has the sufficient length L ' for the size of opening 212a, to ensure that this seals the wall of part
It collapses or is closed toward each other, without compeling due to drive-type pressure difference (driving pressure differential)
Make this seal part to enter in the upper chamber side of the separator from the lower chambers side of separator 200 by opening 212a.Fig. 7 is shown
This embodiment for the valve being in close state in response to higher pressure in the ratio upper chamber 102 in lower chambers 104.
By to bottom part 214b's and 216b needed for the desired cross-sectional area and length L ' for providing channel 231
Size is provided, also allows for optimizing the size for sealing part, the quantity of material of part is sealed for this to minimize, thus most
It is small to have changed the influence of the size for sealing part to the response valve time.Base portion can be determined by analysis or by repetition test
Divide the optimum size of 214b and 216b.
In one embodiment, when the separator due to airbag cushion and when full extension or extension, for having
In 20mm2To 30mm2The channel 231 for the cross-sectional area for (containing boundary value) in range, model of the size L ' in 20mm to 50mm
In enclosing.
As the pressure difference between described two chambers increases, the pressure for making valve material close the flow channel also increases
Greatly, so that the check-valves remains off, even if it is also such for having relatively high pressure difference between the chamber.
In an alternative embodiment, air bag chamber separator 200 and valve 212 are formed by single continuous material part,
Rather than it is formed by two sseparated sheet materials.
With reference to figures 11 to Figure 17, in another embodiment, separator 300 has body part 300p, the body part
The non-attachment part 313 and 315 that 300p has attachment part 310 and is formed together with the attachment part 310.Attachment part
310 are attached to the panel 12,14 and 16 of the outside or shell to form air bag, with as previously mentioned separator and panel it
Between formed it is gas-tight seal.Non- attachment part 313 and 315 is not attached to any panel in panel 12,14 and 16, thus not attached
Socket part provide point between 313,315 and the part opposite with non-attachment part 313 and 315 of panel 12,14,16 opening 320 and
322, the opening 320 and 322 allows the fluid communication between upper chamber 102 and lower chambers 104.
In addition, additionally provide valve system 312 and 321 (schematically showing in Figure 11 to Figure 12 B), with allow gas from
Upper chamber flows into lower chambers, and also limits from lower chambers 104 to the reflux in upper chamber 102.It can be open by control
320 and 322 size and the structure snd size of the valve are controlled from upper chamber 102 to the gas flow rate in lower chambers 104.?
In embodiment as described herein, these valves are check valve or check-valves, are configured to limitation gas from lower chambers and return to epicoele
Reflux in room.In addition to this, in a particular embodiment, these valves are also structured in response between lower chambers and upper chamber
It is intended to push on the direction (that is, in direction for from second chamber returning to first chamber) opposite with air bag filling direction
The generation of the buffer brake difference of gas and close, thus, it is possible to pressure lasting for a long time is maintained in lower chambers.
With reference to figures 11 to Figure 12 C, in one embodiment, the first end 312a of the limb 312b of material is open along formation
The neighboring of the non-attachment part 313 of the separator of 320 side is integrally formed or is stitched into body part 300p
Or it is attached to body part 300p in another appropriate manner, it is gas-tight seal to be formed between the limb and body part.And
And the first end 321a of the limb 321b of material along formed opening 322 side non-attachment part 315 neighboring with
Separator 300 is integrally formed or is stitched into or be attached in another appropriate manner separator 300, in the limb and
It is formed between body part gas-tight seal.In an illustrated embodiment, limb 312b and 321b is rectangle, but is answered according to specific
It is required that, it is possible to use other shapes.There is limb 312b length L1 and width w1, limb 321b to have length L2 and width
w2.Figure 12 C shows Figure 11 to Figure 12 B for being attached with limb 312b and 321b as described in flattening or extension state
Separator 300 plan view.
When separator 300 is attached to the panel to form air bag shell along attachment part 310, from upper chamber 102
Any gas being flowed into lower chambers 104 by opening 320 and 322 will all flow through opening 320 and flow through opening 322, this is opened
Mouth 320 is defined by the limb 312b on side and the airbag panel on the other side 14, and the opening 322 is by the limb on side
Airbag panel 16 on 321b and the other side defines.The gas will be responsive to wherein epicoele chamber pressure and be greater than cavity of resorption chamber pressure
Pressure difference and along be attached to these opening limb 312b and 321b flow.
Figure 12 A schematically shows the embodiment of valve 312 and 321 in the open state, and wherein gas is along arrow " A "
It flows through opening 320 and 322 and enters in lower chambers 104, so that limb 312b and 321b be pushed open to side and maintain the valve
Opening state.Moreover, limb 312b and 321b are configured to respond to be greater than the safety of epicoele chamber pressure in its middle and lower chamber pressure
Gasbag pressure is poor and closes and limits the transfer gas for returning to upper chamber 102 from lower chambers 104.For this purpose, limb 312b and 321b
Length L1 and L2 be respectively relative to be set with the relative dimensions of limb 312b and the 321b corresponding opening 320 and 322 coupled
Scale cun, so that the higher relative pressure gas in lower chambers 104 pushes on the inner surface 312s and 321s of these limbs,
So as to cause limb 312b and 321b towards its respective 320 and 322 movement of opening and also towards the exterior face of air bag
The corresponding panel of plate 12,14 and 16 is mobile, contacts until being formed between these limbs and the outer wall of air bag.This contact
Formed gas-tight seal at each opening 320 and 322, it is limited from lower chambers 104 to the reflux in upper chamber 102.This makes
Raised pressure can be maintained within the period of an elongated segment in second chamber 104 by obtaining.
Limb 312 and 321 is also respectively provided with sufficient length L1 and L2 for its respective opening 320 and 322,
To ensure that these limbs contact separator and the wall as described above, without forcing these valves due to drive-type pressure difference
Piece is entered in the upper chamber side 102 of separator 300 by its respective opening.Figure 12 B is shown in response in lower chambers 104
This embodiment for these valves being in close state than higher pressure in upper chamber 102, wherein higher gas pressure exists
Apply the power indicated by arrow " B " on the inner surface of limb 312b and 321b.
By providing the size of limb 312 and 321 as described herein, the size for optimizing the limb is also allowed for,
To minimize the quantity of material for being used for the limb, to minimize influence of the size of the limb to the response valve time.It can
To determine the optimum size of the valve flap by analysis or by repetition test.
In one embodiment, when the separator due to airbag cushion and when full extension or extension, for each
With in 20mm2To 30mm2The opening 320 and 322 of the cross-sectional area of (contain boundary value) in range, size L1 in Figure 12 A and
L2 is in the range of 20mm to 50mm.
As the pressure difference between described two chambers increases, the pressure for making valve material close the flow channel also increases
Greatly, so that the check-valves remains off, even if it is also such for having relatively high pressure difference between the chamber.
Limb 312b and 321b can be by materials identical with any panel in body part 300p or panel 12,14,16
Material is formed or the limb can be formed by any other suitable gas impermeable material or a variety of gas impermeable materials.Limb 312
Also be configured to 321 it is relatively flexible, so as to the limb 312 and 321 can respond rapidly in upper chamber as described above and under
Pressure difference between chamber.
Figure 14 shows the plane sectional view of embodiment shown in Figure 11 to Figure 12 B.
Figure 15 shows the plan view of another embodiment similar to embodiment shown in Figure 14.In Figure 15, along
The side edge of separator 300 is formed with multiple openings 320,320 ', 322 and 322 ', and each opening is equipped with and described just now
Relevant check-valves.Figure 15 A shows the plan view of the separator 300 of Figure 15 in flattening or extension state.Figure 16 is figure
The enlarged drawing of a part in section shown in 14, wherein the valve is shown at opening state.
With reference to Figure 13 and Figure 13 A, in a particular embodiment, the rectangle limb 312b ' similar with limb shown in Figure 11 and
321b ' is respectively provided with respective width w1 ' and w2 ', width w1 ' and w2 ' be dimensioned with provide side section 312w and
321w, when the separator is attached to the panel to form air bag shell, the side section 312w and 321w is extended beyond out
Each end of mouth 320 and 322 is Chong Die with each end of opening 320 and 322.That is, limb 312b ' is along limb broad-ruler
The part of very little w1 ' is directly attached to side panel 14, in order to provide limb 312b ' attachment part 312w and in the shell and every
It is formed between the flap portion of a attachment gas-tight seal.When separator body part 300p and flap portion 312w are attached to and to be formed
When the panel of air bag shell, the flap portion of these attachments is Chong Die with the end of opening 320 or extends beyond opening 320
End.In addition, limb 321b ' is attached to side panel 16 along the part of limb width dimensions w2 ', in order to provide limb 321b '
Attachment part 321w.The panel of air bag shell is formed when separator body part 300p and flap portion 321w are attached to
When, the flap portion of these attachments is Chong Die with the end of opening 322 or extends beyond the end of opening 322.It can be according to specific
The requirement of application carrys out the length of regulation limb attachment part 312w and 321w.Figure 13 A is shown is attached with limb as described
The plan view of the separator 300 of Figure 13 in flattening or extension state of 312b and 321b, further it is shown that the part of limb
312w and 321w, these parts 312w and 321w are attached to the relevant panel in airbag panel 14 and 16, so that described
These parts of limb are Chong Die with the end of opening 320 and 322.
The overlapping or other material provided by the extension side of limb 312b helps to prevent two phases of limb 312b
Anti- side edge 312r in response between lower chambers and upper chamber be intended to from lower chambers 104 towards upper chamber 102 push gas
The pressure difference of body and be pushed through the opening 320 or contacted with the formation of the relevant edge of the opening.Moreover, prolonging by limb 321b
The overlapping for stretching side offer helps to prevent two opposite side edge 321r of limb 321b ' in response to lower chambers and upper chamber
Between be intended to from lower chambers 104 towards upper chamber 102 push gas pressure difference and be pushed through the opening 322 or with this
The relevant edge of opening forms contact.
In another specific embodiment shown in Figure 17, previously described valve 312 is shown at closed state, such as
Figure 12 B is visible.However, the surface of the limb 312b contacted with airbag panel 14 and the air bag contacted with limb 312b
One or two in the inner surface of panel 14 is coated with the layer 800 of silica gel or similar material, to facilitate in the limb
It is formed between the contact surface of air bag side panel and remains gas-tight seal.
With reference to Figure 18, in another particular embodiment, air bag 510 includes separator 500 and at least one opening
512a and relevant check-valves 555 according to embodiment described herein.Separator 500 be attached to airbag panel 512,
514,516 inner surface, to form curved or wavy surface 500s, the surface 500s has to be extended in all directions
And the flat adjacent with the alternating on front side of air bag in the leading edge 500e of 520 connections extended downwardly is terminated at,
In, one or more check-valves (not shown) are located at desired position (multiple positions) along the separator.However, will separate
Any position needed for the seam that device 500 is connected to air bag main panel and side panel can have the requirement for specific application
And/or construction.For effective operation of valve embodiment above-mentioned, it is expected that valve opening 112a and the limb is attached to separation
The seam of device is arranged along the relatively flat part of separator.The design parameter of the valve (multiple valves) and it is attached to air bag face
The shape of the separator 500 of plate 512,514,516 can be optimised, so that one or more parts of air bag are in substitute
It expands before the other parts of capsule and/or deflection or in the desired manner in response to each position of Vehicular occupant in air bag
Shock on outside.
Figure 19 shows the cross-sectional perspective view of another air bag embodiment, shows along separator 300 and is dividing
Every the part of the air bag of 300 lower section of device.In this embodiment, which is attached to form peace along attachment part 510
The full outside of air bag or the panel 512,514 and 516 of shell, to form gas between separator and the panel as previously mentioned
Sealing.Separator 300 has body part 300p and the side opening 320 and 322 including describing above with reference to Figure 11 to Figure 14.
In addition, another opening 324 is formed between separator and main airbag panel 512, the preceding collision side 520 with air bag
Relatively.Opening 324 also has the check-valves according to one of embodiment described herein for being operatively connected to the opening.
Figure 19 A (is according to the passenger-side air bag including air bag separator of another alternate embodiment
Swelling state) a part diagrammatic cross-sectional view.With reference to Figure 19 A, separator 700 is attached to shape along attachment part 700
At the outside of air bag or the panel 712,714,716 of shell, with the shape between separator and the panel as previously mentioned
At gas-tight seal.In this embodiment, the separator be attached to front panel and the part 700e adjacent with front panel relative to
The plane of the front panel is tilted or is angularly oriented.In the specific embodiment shown in Figure 19 A, when air bag is in expansion
When state, the part 700e of the separator 700 adjacent with front panel 712 D5 (vehicle taken a seat from neighbouring front panel in downward direction
The angle observation of occupant) on tilt or angled.However, separator part 700e is also alternatively in upward direction (with side
The direction opposite to D5) on tilt or angled.
In a particular embodiment, the inclination of separator part 700e or the change of orientation direction start at the L8 of position, should
Position L8 is that air bag is attached to (or being configured to be attached to by air bag) vehicle will expand on air bag
The position (being indicated by the plane P7 in Figure 18 A) that gas accommodates therein is to before being attached to air bag for separator 700
Panel 712 is simultaneously attached to the three of the preceding seam 700s distance L9 for colliding side 720 (in the position, occupant will contact with front panel)
/ bis-.In addition, with 324 similar openings 724 of opening shown in Figure 19 be located at the separator and main airbag panel 712 it
Between, it is opposite with the preceding collision side 720 of air bag.
During the expansion of air bag, expanding gas is flowed into chamber 102, then passes through opening 724 from chamber 102
Into in chamber 104.The gradient of separator part 700e and opening 724 size (especially the opening towards plane
The size that the side of P7 upwardly extends) it is defined as so that the opening connecing in response to vehicle occupant and air bag front panel 712
It touches and shrinks and be then closed.That is, due to occupant contact and the pressure that applies on the X of direction towards the forefront side of the opening
Edge 724a pushes front panel 712, and pushes the seam 700s in the X direction simultaneously, thus reduces what gas can flow through
Opening 724 effective width 724m and limit by opening 724 gas flowing.In an illustrated embodiment, effective width
724m is measured as the horizontal distance from seam 700s to edge 724a.Under enough occupant's contact pressures, contact surface 720
It is further pushed with seam 700s, is opened until front panel 712 contacts the edge 724s of the opening and extended this in the X direction
Mouthful and the opening is completely covered, this close the opening and limit between lower chambers and upper chamber in response to subsequent trend
The opposite side of Yu Yu air bag filling direction push up gas buffer brake difference and from lower chambers 104 to upper chamber
Gas backstreaming in 102.Figure 19 B shows the embodiment of Figure 19 A, and wherein the opening 724 is in response to occupant 777 and air bag
Contact and be in close state.Therefore, the size of the opening corresponds directly to contact of the occupant with air bag and reduces, and
Then the opening is closed.This embodiment eliminates the demands to the limb of the opening is closed in response to buffer brake difference, as long as
Occupant is maintained against pressure on the front panel.It, can be by analyzing or making by known method for specifically applying
The size for most preferably tilting down gradient and opening 724 of separator part 700e is determined by testing repeatedly with test.
In alternative embodiments, inclined separator part 700e and relevant opening 724 can be with shapes in the separator
At other opening and valve system (not shown) be used in combination, to allow and limit the flowing between chamber 102 and 104.
In the embodiments described herein, according to the requirement of specific application, for example, according to the expectation of air bag fill when
Between, position (multiple positions) (if present) that should be first filled before filling other positions on the inside of air bag and other
(or multiple types) any amount of check valve of relevant factor, any desired type can in any suitable position
It is incorporated into relevant separator at (multiple positions).
Referring now to Figure 20, the embodiment 10 of air bag described herein can be incorporated into air bag system 900
In.Air bag system 900 includes at least one gas source 915 (for example, as it is known that aerator or gas generation system) and root
According to embodiment described herein air bag 10.The air bag is operatively connected to gas source, so as to
Gas generation system activate when with gas fluid communication.Air bag system 900 may also comprise collision accident sensor 910
(or communicating).Collision accident sensor 910 includes known crash sensor algorithm, and the algorithm is for example in collision accident
Promote the actuating of air bag system 900 via the activation of gas source 915.
Referring again to Figure 20, air bag system 900 also can be incorporated into widely more complicated vehicle occupant and protect system
In system 800, which includes the other element of such as safety belt assembly 850.Figure 20 shows this protection
The schematic diagram of one exemplary embodiments of system.Safety belt assembly 850 includes safety belt shell 852 and extends from shell 852
Safety belt 860.Safety belt retractor mechanism 854 (for example, spring-loaded mechanism) can be connected to the end of safety belt.Separately
Outside, it is known that safety belt pretensioner 856 can be connected to safety belt retractor mechanism 854, to activate the receipts in collision accident
Hui Qi mechanism.In United States Patent (USP) No.5,743,480, No.5,553,803, No.5,667,161, No.5,451,008, No.4,
The typical safety belt that describing in 558,832 and No.4,597,546 can be used in combination with safety belt embodiment of the invention is received
Hui Qi mechanism, above-mentioned document are incorporated to by reference herein.In United States Patent (USP) No.6,505,790 and No.6,419,177
In describe the schematic example for the typical preloader that safety belt embodiment of the invention can be in combination, above-mentioned document is herein
It is incorporated to by reference.
Safety belt assembly 850 also may include collision accident sensor 850 (for example, inertial sensor or accelerometer),
Or communicated with collision accident sensor 850, the collision accident sensor 850 includes known crash sensor algorithm, described
Algorithm for example promotes the cause of safety belt pretensioner 856 via the activation for the pyrotechnics device for igniting (not shown) being integrated in preloader
It is dynamic.The United States Patent (USP) No.6,505,790 and No.6,419,177 being incorporated to by reference before are provided to be caused by this method
The schematic example of dynamic preloader.
Reference of the position of element or orientation, such as "upper", "lower" etc. are referred to herein swollen when being installed in the vehicle
The feature of swollen air bag.It should be noted that the orientation of various elements can be different according to other exemplary embodiments and such
Variation is intended to be covered by the disclosure.
It should be noted that the air bag of external dimensions having the same and structure can be used for a variety of applications, because due to
In terms of air bag performance characteristic caused by design requirement variation can by modify air bag internal structure (for example,
Change the position of separator, change the flow behavior for the various valve systems for connecting upper chamber with lower chambers and change upper chamber and leads to
Gas position and characteristic) Lai Shixian.It is provided using this ability of common external structure in airbag design and manufacturer
The degree of consistency in face.
It will be appreciated that the foregoing description of various embodiments is only used for the purpose of signal.Therefore, for disclosed herein each
Structurally and operationally feature is susceptible to a variety of remodeling to kind, these remodeling are all without departing from scope of the appended claims.
Claims (7)
1. a kind of air bag, comprising:
Shell, the shell limit the inside of the air bag；With
Separator, the separator is located in the inside, to be divided into the inside when the air bag is activated
Upper chamber and lower chambers, the separator include body part, first edge, second edge and third edge, first side
Edge and the second edge are separated from each other and opposite each other, and the separator further includes described along the separator
Three edges are attached at least one limb of the body part, and the separator is attached to the shell, so that described first
Edge and the second edge are entirely attached to the shell, to form gas between the shell and the body part
It seals and forms gas flow channel between at least one described limb and the shell,
Wherein, the upper chamber and the lower chambers are configured to contact when the air bag is completely expanded with occupant,
Wherein, the separator is attached to the shell, so that: at least one described limb is in the bottom chamber, also,
In response to the big pressure difference of the indoor pressure of epicoele described in the wherein pressure ratio of the bottom chamber, at least one described limb quilt
It forces and is contacted with the shell, the transfer gas of the flow channel to the upper chamber is passed through from the lower chambers with limitation.
2. air bag according to claim 1, wherein the body part includes multiple limbs, each equal edge of limb
Edge relevant to the limb be attached to the body part, and wherein, the separator is attached to the shell, so as to
It is formed between the shell and the relevant edge of the body part gas-tight seal and in the shell and described more
Relevant gas flow channel is formed between each limb in a limb.
3. air bag according to claim 2, wherein the separator is attached to the shell, so as to described more
It is logical that gas flowing is formed between the part in the left side of the formation air bag of the first limb and the shell in a limb
Road, and the shape between the part on the right side of the formation of the second limb in the multiple limb and the shell air bag
At gas flow channel.
4. air bag according to claim 3, wherein the separator is attached to the shell, so as to described more
Gas stream is formed between the part of the preceding collision side of the formation air bag of third limb and the shell in a limb
Dynamic channel.
5. air bag according to claim 2, wherein a part of quilt of at least one limb in the multiple limb
It is directly attached to the shell, it is gas-tight seal to be formed between the shell and attached flap portion.
6. a kind of vehicle occupant protection system, the vehicle occupant protection system includes substitute according to claim 1
Capsule.
7. a kind of vehicle, the vehicle includes air bag according to claim 1.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361865095P | 2013-08-12 | 2013-08-12 | |
| US61/865,095 | 2013-08-12 | ||
| PCT/US2014/050780 WO2015023700A1 (en) | 2013-08-12 | 2014-08-12 | Dual chambered passenger airbag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105555619A CN105555619A (en) | 2016-05-04 |
| CN105555619B true CN105555619B (en) | 2019-05-28 |
Family
ID=52468640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480050175.1A Active CN105555619B (en) | 2013-08-12 | 2014-08-12 | Two-chamber cell-type airbag |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6625054B2 (en) |
| CN (1) | CN105555619B (en) |
| DE (1) | DE112014003724T5 (en) |
| WO (1) | WO2015023700A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016153262A (en) * | 2015-02-20 | 2016-08-25 | オートリブ ディベロップメント エービー | Air bag device |
| JP6815518B2 (en) * | 2017-08-02 | 2021-01-20 | オートリブ ディベロップメント エービー | Vehicle side airbag device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6439605B2 (en) * | 1999-12-08 | 2002-08-27 | Takata Corporation | Air bag and air bag device |
| CN1483611A (en) * | 2002-08-07 | 2004-03-24 | ������������ʽ���� | Air sag for air sag assembly |
| DE102006014823A1 (en) * | 2006-03-29 | 2007-10-04 | Autoliv Development Ab | Air bag arrangement for use in vehicle for protecting passenger during collision, has tube section pivoted such that effective length of tube section is shortened in assembled condition of airbag arrangement |
| CN101184654A (en) * | 2005-12-16 | 2008-05-21 | 丰田自动车株式会社 | Airbag apparatus with T-shaped airbags |
| US7731232B2 (en) * | 2006-12-18 | 2010-06-08 | Honda Motor Co., Ltd. | Vehicle airbag device |
| CN102216126A (en) * | 2008-12-29 | 2011-10-12 | 本田技研工业株式会社 | Side airbag device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004059085A1 (en) * | 2004-12-02 | 2006-06-08 | Takata-Petri Ag | Airbag for an airbag module of a motor vehicle |
| DE102005034250A1 (en) * | 2005-07-18 | 2007-02-01 | Takata-Petri (Ulm) Gmbh | Airbag for a vehicle occupant restraint system |
| KR100980931B1 (en) * | 2007-12-15 | 2010-09-07 | 기아자동차주식회사 | Airbag Cushion Structure with Variable Inner Vent Hole |
-
2014
- 2014-08-12 WO PCT/US2014/050780 patent/WO2015023700A1/en active Application Filing
- 2014-08-12 CN CN201480050175.1A patent/CN105555619B/en active Active
- 2014-08-12 JP JP2016533502A patent/JP6625054B2/en not_active Expired - Fee Related
- 2014-08-12 DE DE112014003724.9T patent/DE112014003724T5/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6439605B2 (en) * | 1999-12-08 | 2002-08-27 | Takata Corporation | Air bag and air bag device |
| CN1483611A (en) * | 2002-08-07 | 2004-03-24 | ������������ʽ���� | Air sag for air sag assembly |
| CN101184654A (en) * | 2005-12-16 | 2008-05-21 | 丰田自动车株式会社 | Airbag apparatus with T-shaped airbags |
| DE102006014823A1 (en) * | 2006-03-29 | 2007-10-04 | Autoliv Development Ab | Air bag arrangement for use in vehicle for protecting passenger during collision, has tube section pivoted such that effective length of tube section is shortened in assembled condition of airbag arrangement |
| US7731232B2 (en) * | 2006-12-18 | 2010-06-08 | Honda Motor Co., Ltd. | Vehicle airbag device |
| CN102216126A (en) * | 2008-12-29 | 2011-10-12 | 本田技研工业株式会社 | Side airbag device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016531041A (en) | 2016-10-06 |
| DE112014003724T5 (en) | 2016-05-25 |
| CN105555619A (en) | 2016-05-04 |
| WO2015023700A1 (en) | 2015-02-19 |
| JP6625054B2 (en) | 2019-12-25 |
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