CN102774346B - Air bag device - Google Patents
Air bag device Download PDFInfo
- Publication number
- CN102774346B CN102774346B CN201210047408.5A CN201210047408A CN102774346B CN 102774346 B CN102774346 B CN 102774346B CN 201210047408 A CN201210047408 A CN 201210047408A CN 102774346 B CN102774346 B CN 102774346B
- Authority
- CN
- China
- Prior art keywords
- tether
- cut
- pneumatic cushion
- buffering pneumatic
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/239—Inflatable members characterised by their venting means
-
- 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
- B60R21/2334—Expansion control features
- B60R21/2338—Tethers
-
- 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
- B60R2021/2395—Inflatable members characterised by their venting means comprising means to control the venting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
The invention provides when a kind of buffering pneumatic cushion has just started to launch and prevent that gas discharging from maintaining expansion pressure, emission gases after buffering pneumatic cushion expand into prescribed level, reduces occupant's head and the air bag device of cervical injuries. For this reason, the air bag device of embodiment of the present invention comprises: buffering pneumatic cushion, and the fashionable expansion of described gas flow, is formed with above and under the pressure of inflow gas, opens the cut that makes above-mentioned gas discharge; Cover the venting stopple of cut; Be attached to the tether of described venting stopple; Be combined in described tether, the damaged constraint of removing tether in the time that buffering pneumatic cushion expand into prescribed level, so that venting stopple moves under the gas pressure of cut discharge, the gas generator of open above-mentioned cut.
Description
Technical field
The present invention relates to a kind of air bag device, particularly, buffering pneumatic cushion prevents while just having started to launch that gas discharging from maintaining expansion pressure, and emission gases after buffering pneumatic cushion expand into prescribed level reduces passenger's head and the air bag device of cervical injuries.
Background technology
Generally, air bag device is automobile while having an accident, and the gas that inflator produces flows into buffering pneumatic cushion, buffering pneumatic cushion is expanded and launch, protection passenger's device.
Recently, often there is occupant and lie prone after buffering pneumatic cushion, because the expansion pressure of buffering pneumatic cushion is too large, give occupant's head and the case that neck damages. Especially, the relevant regulation of commodity of air bag device has been formulated in North America, and whether the expansion pressure of strictly assessing buffering pneumatic cushion causes occupant's head and cervical injuries.
Therefore, need a kind of buffering pneumatic cushion to prevent that gas discharging from maintaining expansion pressure while just having started to launch, the lie prone emission gases in an instant of buffering pneumatic cushion of occupant, reduces passenger's head and the air bag device of cervical injuries.
Summary of the invention
The technical task that the present invention need to solve is to provide when buffering pneumatic cushion has just started to launch and prevents that gas discharging from maintaining expansion pressure, and emission gases after buffering pneumatic cushion expand into prescribed level reduces occupant's head and the air bag device of cervical injuries.
The problem that the present invention need to solve is not limited only to above-mentioned problem, practitioner should from record below, fully can understand other not mentioned to problem.
In order to solve above-mentioned technical task, the air bag device of embodiment of the present invention comprises, buffering pneumatic cushion, and the fashionable expansion of above-mentioned buffering pneumatic cushion gas flow, is formed with above and under the pressure of inflow gas, opens the cut that makes above-mentioned gas discharge; Cover the venting stopple of cut; Be attached to the tether (tether) of venting stopple; Be combined in tether, the damaged constraint of removing tether in the time that buffering pneumatic cushion expand into prescribed level, so that venting stopple moves under the gas pressure of cut discharge, the gas generator of open above-mentioned cut.
The details of other embodiments are included in description and accompanying drawing.
Air bag device of the present invention, venting stopple is blocked the cut of buffering pneumatic cushion under the state of tether (tether) constraint, gas generator breakage in the time that buffering pneumatic cushion expand into prescribed level, remove the constraint to tether, so venting stopple moves under the open gas pressure of cut, open cut. Therefore, buffering pneumatic cushion prevents while just having started to launch that gas discharging from maintaining expansion pressure, and emission gases after buffering pneumatic cushion expand into prescribed level reduces occupant's head and cervical injuries.
Effect of the present invention is not limited only to above-mentioned effect, practitioner should from record below, fully can understand other not mentioned to effect.
Brief description of the drawings
Fig. 1 is the air bag device figure of embodiment of the present invention;
Fig. 2 is the working state figure of the air bag device of embodiment of the present invention;
Fig. 3 is the significant points plane of the air bag device of embodiment of the present invention;
Fig. 4 is the sectional view cutting along the A-A line of Fig. 3.
Main description of reference numerals
10: air cell covering 20: inflator (inflator)
30: buffering pneumatic cushion 35: cut
40: venting stopple 50: tether
54: the second tethers of 52: the first tethers
60: gas generator 70: support
75: intercommunicating pore.
Detailed description of the invention
With reference to the explanation of the drawings and specific embodiments, will most clearly understand excellent feature of the present invention and its implementation. But the present invention is not limited in the embodiment introducing below, can also there is the embodiment of other forms. The present embodiment, just in order more completely to introduce the present invention, helps the practitioner who grasps general knowledge in this technical field to more clearly understand category of the present invention, and category of the present invention is as the criterion with the scope described in claim. In entire description, identical reference marks represents identical inscape.
Below, describe the air bag device of present embodiment in detail with reference to accompanying drawing.
Fig. 1 is the air bag device figure of embodiment of the present invention, the air bag device working state figure that Fig. 2 is embodiment of the present invention.
As depicted in figs. 1 and 2, the air bag device of embodiment of the present invention comprises, air cell covering 10, inflator 20 and buffering pneumatic cushion 30.
Air cell covering 10 is received buffering pneumatic cushion 30, is fixed on car body.
Inflator 20 is fixed on air cell covering 10, is connected with buffering pneumatic cushion 30. Inflator 20 produces gas in the time that automobile has an accident, to buffering pneumatic cushion 30 air feed.
Which floor buffering pneumatic cushion 30 has been folded into and has been accommodated in air cell covering 10, and the fashionable expansion of gas flow producing when inflator 20 launches, the occupant on protection co-pilot seat.
Buffering pneumatic cushion 30 is made up of three cut-parts (panel). That is, buffering pneumatic cushion 30 comprises, contact occupant's plate umpire sheet 32, is attached to respectively the side panel 34 of plate umpire sheet 32 both sides.
On side panel 34, be formed with cross cut 35. Cut 35 is opened under the gas pressure that flow into buffering pneumatic cushion 30 inside from inflator 20, makes above-mentioned gas be discharged into the outside of buffering pneumatic cushion 30.
In order to maintain expansion pressure, buffering pneumatic cushion 30 should not pass through cut 35 emission gases in the time just starting to expand, when occupant's head touches buffering pneumatic cushion 30 in a flash, by cut 35 emission gases, in case the excessive expansion pressure of buffering pneumatic cushion 3 causes occupant's head and cervical injuries.
Therefore, the air bag device of embodiment of the present invention also comprises, covers the venting stopple 40 of cut 35; Be connected to the tether 50 of venting stopple 40; Be connected to tether 50, gas damaged occurs in the time that buffering pneumatic cushion 30 expand into prescribed level, remove the gas generator 60 of the constraint to tether 50. At this, gas generator 60 is by the control signal of the ECUs (not shown) such as ACU (AirbagControlUnit) or ECU (ElectronicControlUnit), after buffering pneumatic cushion 30 expand into prescribed level, produce gas, and quilt is damaged under its gas pressure. What the head that above-mentioned ECU is preferably configured to occupant touched buffering pneumatic cushion 30 sends detonator signal to gas generator 60 in an instant, produces gas damaged so that occupant's head touches the gas generator in a flash 60 of buffering pneumatic cushion 30.
Venting stopple 40 is arranged in the outside of buffering pneumatic cushion 30, covers cut 35. When gas generator 60 is damaged while removing the constraint to tether 50, the gas pressure discharging from cut 35, move the outside of buffering pneumatic cushion 10, open cut 35.
Buffering pneumatic cushion 30 is to make by soft material, and the support 70 of cut 35 is supported in the medial surface arrangement of the buffering pneumatic cushion 30 corresponding with cut 35, in case cut 35 enters the inside of buffering pneumatic cushion 30.
On support 70, form a plurality of intercommunicating pores 75, the gas that flow into buffering pneumatic cushion 30 inside is transported to cut 35 by intercommunicating pore 75. Support 70 is by a plurality of membrane support cut 35 between intercommunicating pore 75, in case cut 35 and venting stopple 40 enter the inside of buffering pneumatic cushion 30.
Tether 50 connects between venting stopple 40 and gas generator 60, can be in the inside and outside movement of buffering pneumatic cushion 30.
Gas generator 60 is connected to air cell covering 10. Gas generation medium is contained in the inside of gas generator 60, in the time that buffering pneumatic cushion 30 expand into prescribed level, receives the signal gas generation medium of ECU and blasts, the inner gas that occurs. Now, the position that gas generator 60 connects tether 50 is damaged and come off under gas pressure, removes the constraint to tether 50.
As mentioned above, in the time that the constraint of tether 50 is disengaged, the outside that the gas pressure discharging from cut 35 is transferred air plug 40 and moved buffering pneumatic cushion 30, open cut 35, is discharged into outside so flow into the gas of buffering pneumatic cushion 30 inside by cut 35.
Fig. 3 is the plane of the air bag device significant points of embodiment of the present invention, and Fig. 4 is the sectional view cutting along the A-A line of Fig. 3.
As shown in Figure 3 and Figure 4, tether 50 comprises, connects the first tether 52 of support 70 and the second tether 54 through support 70 outsides.
The first tether 52 is connected to the central portion of venting stopple 40, is connected to gas generator 60 after running through cut 35 through the intercommunicating pore 75 of support 70. The first tether 52, in the time running through cut 35, connects the position of right-angled intersection, through cut 35 center. Also can be through the intercommunicating pore 75 of support 70 central authorities, through support 70 center while running through support 70.
The second tether 54 has many tethers. The second tether 54 in present embodiment has four, is arranged in respectively the first tether 52 up and down, is connected to venting stopple 40. The second tether 54 can pass through the surrounding of cut 35 and the outer rear flank of support 70 successively, is connected to gas generator 60. Support 70 is arranged between many second tethers 54, to be not mutually wound around between many second tethers 54.
The first tether 52 and the second tether 54, passing after buffering pneumatic cushion 30 and support 70, connect into one in the inside of buffering pneumatic cushion 30, are connected to gas generator 60. In present embodiment, the first tether 52 runs through cut 35 center, is connected to gas generator 60 through the intercommunicating pore 75 of support 70. Many the second tethers 54, through the surrounding of cut 35 and the outside of support 70, are connected to the first tether 52.
Introduce the effect of the air bag device of the embodiment of the present invention of said structure below.
First, when automobile has an accident, the gas occurring in inflator 20 flows into the inside of buffering pneumatic cushion 30, and buffering pneumatic cushion 30 starts the expansion of expanding thus. Before buffering pneumatic cushion 30 expand into prescribed level, venting stopple 40 cut 35 in the constraint lower block of tether 50. Therefore, the gas that flow into buffering pneumatic cushion 30 inside can not be discharged into by cut 35 outside of buffering pneumatic cushion 30, so buffering pneumatic cushion 30 can maintain the required suitable pressure of protection occupant in the time just starting to launch.
Buffering pneumatic cushion 30 expand into prescribed level, and occupant's head touches buffering pneumatic cushion 30 in a flash, and gas occurs in the inside of receiving the signal gas generator 60 of ECU. Damaged under gas generator 60 gas pressure therein, remove the constraint to tether 50.
As mentioned above, tether 50 is from gas generator 60 separates, and as shown in Figure 2, the outside that venting stopple 40 moves buffering pneumatic cushion 30 under the gas pressure discharging by cut 35, opens cut 35. Therefore, flow into the gas of buffering pneumatic cushion 30 inside, be discharged into the outside of buffering pneumatic cushion 30 by cut 35. Therefore, occupant's head touches after buffering pneumatic cushion 30, and the pressure drop of buffering pneumatic cushion 30 prevents occupant's head and the injury that neck causes to layback under the pressure of buffering pneumatic cushion 30.
Those skilled in the art is to be understood that under the condition that does not change technological thought of the present invention or essential feature can adopt other detailed description of the invention. Therefore, just for example, the present invention is not only defined in above-described embodiment to the above embodiments. Should be interpreted as being included in scope of the present invention from all changes of equivalents or the mode of change.
Claims (7)
1. an air bag device, is characterized in that, comprising:
Buffering pneumatic cushion, described buffering pneumatic cushion is when the fashionable expansion of gas flow, forms under the pressure of inflow gas to some extent and opens the cut that makes above-mentioned gas discharge;
Venting stopple, described venting stopple covers cut;
Tether, described tether is attached to venting stopple; And
Gas generator, described gas generator is combined in tether, and the constraint to described tether is removed in breakage in the time that buffering pneumatic cushion expand into prescribed level, so that venting stopple moves under the gas pressure of cut discharge, open described cut;
Be arranged in the inside of buffering pneumatic cushion, support the support of cut;
On described support, be formed with intercommunicating pore, to the gas that flow into buffering pneumatic cushion inside is transported to cut.
2. air bag device according to claim 1, is characterized in that, described tether comprises, connects the first tether of support and the second tether through support outside.
3. air bag device according to claim 2, is characterized in that, described the second tether has many, and above-mentioned support is arranged between many second tethers.
4. air bag device according to claim 1, is characterized in that, described cut is cross.
5. air bag device according to claim 2, is characterized in that, described the first tether connects cut, and the second tether is walked around cut around.
6. air bag device according to claim 2, is characterized in that, described the first tether and the second tether synthesize one in the internal junction of buffering pneumatic cushion, are connected to gas generator.
7. air bag device according to claim 1, is characterized in that, also comprises: the air cell covering of storage buffering pneumatic cushion, gas generator is connected to air cell covering.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020110044624A KR20120126646A (en) | 2011-05-12 | 2011-05-12 | An airbag apparatus |
| KR10-2011-0044624 | 2011-05-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102774346A CN102774346A (en) | 2012-11-14 |
| CN102774346B true CN102774346B (en) | 2016-05-04 |
Family
ID=47119516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210047408.5A Expired - Fee Related CN102774346B (en) | 2011-05-12 | 2012-02-28 | Air bag device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20120126646A (en) |
| CN (1) | CN102774346B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102216133B1 (en) * | 2014-08-14 | 2021-02-16 | 현대모비스 주식회사 | Passenger Airbag of Vehicle |
| KR102195362B1 (en) * | 2014-08-14 | 2020-12-24 | 현대모비스 주식회사 | Airbag Of Vehicle |
| CN105946780B (en) * | 2016-05-13 | 2019-02-12 | 大连理工大学 | U-shaped safety air bag |
| JP6876817B2 (en) * | 2017-10-05 | 2021-05-26 | オートリブ ディベロップメント エービー | Airbag device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3741580A (en) * | 1971-08-27 | 1973-06-26 | Gen Motors Corp | Occupant restraint system |
| DE19703820A1 (en) * | 1997-02-01 | 1998-08-06 | Wolfgang Dr Ing Mueller | Pressure levelling device for release of airbag |
| CN101084141A (en) * | 2004-10-06 | 2007-12-05 | 奥托里夫Asp股份有限公司 | Airbag cushions with optional venting for out-of-position conditions |
| CN101284518A (en) * | 2008-05-24 | 2008-10-15 | 锦州锦恒汽车安全系统有限公司 | Exhaust adjustable airbag device |
| CN101389510A (en) * | 2006-02-27 | 2009-03-18 | 马自达汽车株式会社 | Airbag device |
| CN201296225Y (en) * | 2008-10-04 | 2009-08-26 | 叶宏武 | Gasbag capable of automatically opening an exhaust vent along with pressure |
-
2011
- 2011-05-12 KR KR1020110044624A patent/KR20120126646A/en not_active Withdrawn
-
2012
- 2012-02-28 CN CN201210047408.5A patent/CN102774346B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3741580A (en) * | 1971-08-27 | 1973-06-26 | Gen Motors Corp | Occupant restraint system |
| DE19703820A1 (en) * | 1997-02-01 | 1998-08-06 | Wolfgang Dr Ing Mueller | Pressure levelling device for release of airbag |
| CN101084141A (en) * | 2004-10-06 | 2007-12-05 | 奥托里夫Asp股份有限公司 | Airbag cushions with optional venting for out-of-position conditions |
| CN101389510A (en) * | 2006-02-27 | 2009-03-18 | 马自达汽车株式会社 | Airbag device |
| CN101284518A (en) * | 2008-05-24 | 2008-10-15 | 锦州锦恒汽车安全系统有限公司 | Exhaust adjustable airbag device |
| CN201296225Y (en) * | 2008-10-04 | 2009-08-26 | 叶宏武 | Gasbag capable of automatically opening an exhaust vent along with pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20120126646A (en) | 2012-11-21 |
| CN102774346A (en) | 2012-11-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |