CN108704403A - A kind of filtering core for air bag gas filtering - Google Patents
A kind of filtering core for air bag gas filtering Download PDFInfo
- Publication number
- CN108704403A CN108704403A CN201810898389.4A CN201810898389A CN108704403A CN 108704403 A CN108704403 A CN 108704403A CN 201810898389 A CN201810898389 A CN 201810898389A CN 108704403 A CN108704403 A CN 108704403A
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- CN
- China
- Prior art keywords
- filtering
- core
- hole
- piece
- oblique hole
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- 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.)
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Links
- 238000001914 filtration Methods 0.000 title claims abstract description 74
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 abstract description 20
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 239000002356 single layer Substances 0.000 abstract description 6
- 230000001788 irregular Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 235000011888 snacks Nutrition 0.000 description 4
- 229940126680 traditional chinese medicines Drugs 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a kind of filtering cores for air bag gas filtering, it includes core piece, and uniformly distributed oblique hole is provided in core on piece, and the opening direction of oblique hole is consistent；The oblique hole both sides be stamped to be formed protrusion connect to form reinforcing rib with core piece.For the present invention in filtering core piece single layer filter, the direction in hole is to favour plate face, is conducive to blocking residue and flame；In filtering core piece multiple filtration, the oblique hole of adjacent layer guides filtering direction presentation is irregular to move towards path by misplacing to arrange, and extends the path of filtering, effectively stops residue and flame, and ensure that the stability and uniformity of output gas flow；And the number of plies of filtering core can be reduced to the greatest extent, and then mitigate the weight of filtering core, reduce manufacturing cost.
Description
Technical field
The present invention relates to the gas filtration of air bag, especially a kind of filtration cores suitable for air bag gas filtering
Body.
Background technology
Steel plate web filter mostly uses VEM used at present（Variable orifice expanded metal lath）,SEM（Single-hole steel plate net）, filter
Operation principle be to pass through explosive and high-temperature gas that the aerogenesis snack made with traditional Chinese medicines inside air-cushion inflator generates when quick-fried
The expanded metal lath of every layer of filter stops residue and flame to realize.
Presently, there are structural disadvantages：1. the opening direction in hole is perpendicular to plate face when single layer filter, and perpendicular to plate face
Filtering direction is consistent, and high-temperature gas can cross from filter hole, causes filtering approach short, is unfavorable for stopping residue and flame；
2. there is gap when multiple filtration between layers so that filtration path is not when high-temperature gas gap migration between adjacent layers
It is restricted, causes output gas flow uneven, unstable；3. the direction of the filtering of roll-forming metapore is perpendicular to plate face, in hole
Jing <1, when 4-8 layer of the number of plies of superposition, the phenomenon that every layer of aperture area will appear part/through-hole in blocks when being superimposed, it may result in this way
Filter approach shortens, and is unfavorable for stopping residue and flame；And in order to realize this function of blocking residue/flame, it needs to reduce aperture
Or increase the superposition number of plies, and then the overall weight of filter is caused to increase, cost increases.
Invention content
The purpose of the present invention is design a kind of filtering for air bag gas filtering reasonable for structure, using effect is good
Core.
The technical scheme is that
A kind of filtering core for air bag gas filtering, it includes core piece, it is characterised in that：It is provided in core on piece
The opening direction of uniformly distributed oblique hole, oblique hole is consistent；The oblique hole both sides be stamped to be formed protrusion with core piece connect
It connects to form reinforcing rib；The hole height of the oblique hole in core on piece is 0.1-3mm；The position of opening from top to bottom
For Heterogeneous Permutation.
Hole shape described further is various shapes, and hole shape is rectangle, triangle, arc or polygon.
A kind of filtering core using made by above-mentioned core piece, it is characterised in that：Single core piece is integrally bent
At multilayer annular shape, the multilayer is two layers or more.
The arrangement of the core piece of the multilayer annular shape is that the core piece position of opening of adjacent layer is Heterogeneous Permutation.
The beneficial effects of the invention are as follows：
1. when filtering core piece single layer filter of the present invention, the opening direction in hole is to favour plate face, the direction of filtering be perpendicular to
Plate face is conducive to blocking residue and flame；2. when filtering core piece multiple filtration, the oblique hole of adjacent layer passes through the arrangement guiding that misplaces
Filtering direction presentation is irregular to move towards path, extends the path of filtering, stops residue and flame, and ensure that output gas flow
Stability and uniformity；Mesh arrange every layer of transformation pass when, pass variation includes but not limited to following：Kong Gao, opening shape
The aperture of shape, aperture position, filtering core is completely covered on filtering direction, avoids the through-hole phenomenon of product, is conducive to resistance
Keep off residue and flame；3. in the natural shaped reinforcing rib of filtering core on piece, effectively carried in terms of the intensity for making filter
It rises.
Description of the drawings
Fig. 1 is the front view of the present invention,
Fig. 2 is A-A side views of the present invention,
Fig. 3 is the partial enlarged view in the portions Fig. 2 A,
Fig. 4 is the structural schematic diagram of annular filter of the present invention,
Fig. 5 is the partial enlarged view in the portions Fig. 4 B,
Fig. 6 is the structural schematic diagram of the hole that trepanning of the present invention is rectangular shape and trepanning tooling, is located at figure top
It is trepanning tooling, lower section is the hole shape being correspondingly formed,
Fig. 7 is the structural schematic diagram that trepanning of the present invention is triangular shaped hole and trepanning tooling, is located at figure top
Be trepanning tooling, lower section is the hole shape being correspondingly formed,
Fig. 8 is the structural schematic diagram of the hole that trepanning of the present invention is arcuate shape and trepanning tooling, is located at figure top
It is trepanning tooling, lower section is the hole shape being correspondingly formed,
Fig. 9 is the structural schematic diagram of the hole that trepanning of the present invention is polygonal shape and trepanning tooling, is located at figure top
Be trepanning tooling, lower section is the hole shape being correspondingly formed.
Specific implementation mode
Embodiment is described in detail in conjunction with the figures above,
Embodiment 1,
A kind of filtering core for air bag gas filtering, it includes core piece 1, is provided in core on piece uniformly distributed oblique
The opening direction in hole 3, oblique hole is consistent；The oblique hole both sides be stamped to be formed protrusion connect to form reinforcement with core piece
Muscle 4；The raised top surface 5 of oblique hole is covered in oblique hole, and the core on piece between adjacent oblique hole has imperforate section 2.
For structure described in the present embodiment when realizing single layer filter, the opening shape for the oblique hole that core on piece opens up is adjustable,
Determine that gas is adjustable by the cross sectional shape of oblique hole, i.e., gas is adjustable by the throughput of oblique hole, is open by adjusting
Shape, gas flow reach adjusting, you can meet different filtration needs；Such as hole shape shown in Fig. 6-9 be rectangle,
Triangle, arc or polygon meet a variety of filtration needs.
For structure described in the present embodiment when realizing single layer filter, core on piece is provided with uniformly distributed oblique hole（Such as Fig. 1）, with hang down
Directly at an angle in the filtering direction of core piece, gas is in filtering, after initially striking the top surface of oblique hole, further along oblique
Change the flow direction of gas to the export direction in hole, residue during this in gas reaches blocking, and has guided the mistake of gas
Filter direction；Gas encounters the top surface of oblique hole in filtering simultaneously, and the two sides of top surface are formed by reinforcing rib, then can have
The intensity of the raising filtering core of effect, so reduce the aerogenesis snack made with traditional Chinese medicines inside air-cushion inflator it is quick-fried when the aerogenesis that generates
Pressure improves the filtering accuracy of filter for the deformation extent of filtering core.
For structure described in the present embodiment when realizing single layer filter, the openings of sizes for the oblique hole that core on piece opens up is adjustable,
The high selectable range in hole of the oblique hole of the present embodiment is in 0.1-3mm, the angular dimension of opening（I.e. between top surface and core piece
Angle）And opening size can influence respectively gas filtering direction and gas by flow, by adjust openings of sizes,
Gas flow and gas flow reach adjusting, that is, meet different filtration needs；It can also be made in same core on piece more
Hole height is planted to meet different filtration needs.
Embodiment 2,
As shown in Figure 4,5, on the basis of embodiment 1, using core piece described in embodiment 1, filtering core is made,
Single core piece is integrally bent into multilayer annular shape, the multilayer is two layers or more；The core of the multilayer annular shape
The arrangement of body piece is the core piece Heterogeneous Permutation of adjacent layer.
Such structure shows：
Structure described in the present embodiment, by the blocking layer by layer of every layer of core piece, is meeting strainability when realizing multiple filtration
Requirement under, the number of plies of filtering core can be reduced to the greatest extent, and then mitigate the weight of filtering core；Meeting intensity filter
Requirement under, the number of plies can be reduced to the greatest extent, reduce plate thickness and increase pass, and then it is good to reach technique realizability, and energy
Enough effectively reduce cost.
Structure described in the present embodiment when realizing multiple filtration, using filtering core on piece open up uniformly distributed oblique hole come
Filter, the opening shape in hole can be unified, can also be a variety of different, in particular by multiple filtration core piece dislocation group
After conjunction, the position of the oblique hole of adjacent layer makes gas to be filtered is needed could be across each oblique by increasingly complex path
Xiang Kong, this ensure that the effect of filtering is such as：Stop residue, blocking flame, the stability and uniformity for ensureing output gas flow；From
Fig. 4 and Fig. 5 can be seen that due to the core piece aperture position dislocation arrangement that the structure of filtering core of the present invention is adjacent layer,
Once gas is passed through from filtering core, gas filtration direction will lead into the second layer by oblique hole, can encounter the nothing of the second layer
Porose area, then oblique hole is found from imperforate section to both sides, gas and changing flow direction is further guided, the filtering approach of gas is extended,
The residue and flame in gas are effectively blocked, while ensure that the stability and uniformity of gas filtration, it is residual in gas
Slag and flame need that repeatedly turnover occurs in core, could finally filter out, thus ensure that filter effect to the greatest extent.
Structure described in the present embodiment can adjust the openings of sizes and shape of oblique hole when realizing multiple filtration so that
The gas flow of every layer of core piece and gas flow are adjustable, and then adjust gas flow and the gas flow of entire filtering core,
Meet different filtration needs.
This invention ensures that air bag aerogenesis snack made with traditional Chinese medicines can effectively filter residue when quick-fried, and then air bag can be prevented breakdown；Simultaneously
Flame can be effectively filtered, and then can prevent air bag from being burnt；The intensity of this filtering core is high, reduces air-cushion inflator
The aerogenesis pressure that internal aerogenesis snack made with traditional Chinese medicines generates when quick-fried for filtering core deformation extent, to ensure the stabilization of filtering accuracy
Property, it ensure that the performance of air bag is stablized.
The above embodiments are merely examples for clarifying the description, and does not limit the embodiments.For institute
For the those of ordinary skill in category field, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments, and obvious variation extended from this or change
It moves within still in the protection domain of the invention.
Claims (4)
1. a kind of filtering core for air bag gas filtering, it includes core piece, it is characterised in that：It is opened in core on piece
There are uniformly distributed oblique hole, the opening direction of oblique hole consistent；The oblique hole both sides be stamped to be formed protrusion with core piece
Connection forms reinforcing rib；The hole height of the oblique hole in core on piece is 0.1-3mm；The trepanning position of core piece from top to bottom
It is set to Heterogeneous Permutation.
2. a kind of filtering core for air bag gas filtering as described in claim 1, it is characterised in that：Oblique hole
Hole shape is various shapes, and hole shape is rectangle, triangle, arc or polygon.
3. the filtering core made by a kind of core piece using described in the claims 1, it is characterised in that：By single core
Piece integrally bends to multilayer annular shape, and the multilayer is two layers or more.
4. a kind of filtering core for air bag gas filtering as claimed in claim 3, it is characterised in that：Described is more
The arrangement of the circular core piece of layer is that the core piece position of opening of adjacent layer is Heterogeneous Permutation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810898389.4A CN108704403A (en) | 2018-08-08 | 2018-08-08 | A kind of filtering core for air bag gas filtering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810898389.4A CN108704403A (en) | 2018-08-08 | 2018-08-08 | A kind of filtering core for air bag gas filtering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108704403A true CN108704403A (en) | 2018-10-26 |
Family
ID=63875738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810898389.4A Pending CN108704403A (en) | 2018-08-08 | 2018-08-08 | A kind of filtering core for air bag gas filtering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108704403A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021021275A1 (en) * | 2019-07-26 | 2021-02-04 | Autoliv Asp, Inc. | Inflator filter for an inflatable airbag system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005212606A (en) * | 2004-01-29 | 2005-08-11 | Chuo Spring Co Ltd | Filtering member for inflator, and method for manufacturing the same |
| CN2933535Y (en) * | 2006-05-11 | 2007-08-15 | 江明贵 | Gas-filtering device |
| JP2008273295A (en) * | 2007-04-26 | 2008-11-13 | Nippon Kayaku Co Ltd | Filter material for gas generator, and gas generator |
| KR20100070523A (en) * | 2008-12-18 | 2010-06-28 | (주) 대아테크 | Filter of inflater of air bag for vehicle |
| JP2016055669A (en) * | 2014-09-05 | 2016-04-21 | 日本ラインツ株式会社 | Filter for inflator of air bag device, inflator of air bag device, and air bag device |
| CN105899411A (en) * | 2014-01-13 | 2016-08-24 | 奥托里夫Asp股份有限公司 | System and method for inflation gas filtration through tortuous flow pathway |
| US20180056924A1 (en) * | 2016-08-24 | 2018-03-01 | Autoliv Asp, Incorporated | Tortuous path filter for airbag inflator |
| CN209188322U (en) * | 2018-08-08 | 2019-08-02 | 新乡市宇航滤器机械有限公司 | A kind of filtering core for air bag gas filtering |
-
2018
- 2018-08-08 CN CN201810898389.4A patent/CN108704403A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005212606A (en) * | 2004-01-29 | 2005-08-11 | Chuo Spring Co Ltd | Filtering member for inflator, and method for manufacturing the same |
| CN2933535Y (en) * | 2006-05-11 | 2007-08-15 | 江明贵 | Gas-filtering device |
| JP2008273295A (en) * | 2007-04-26 | 2008-11-13 | Nippon Kayaku Co Ltd | Filter material for gas generator, and gas generator |
| KR20100070523A (en) * | 2008-12-18 | 2010-06-28 | (주) 대아테크 | Filter of inflater of air bag for vehicle |
| CN105899411A (en) * | 2014-01-13 | 2016-08-24 | 奥托里夫Asp股份有限公司 | System and method for inflation gas filtration through tortuous flow pathway |
| JP2016055669A (en) * | 2014-09-05 | 2016-04-21 | 日本ラインツ株式会社 | Filter for inflator of air bag device, inflator of air bag device, and air bag device |
| US20180056924A1 (en) * | 2016-08-24 | 2018-03-01 | Autoliv Asp, Incorporated | Tortuous path filter for airbag inflator |
| CN209188322U (en) * | 2018-08-08 | 2019-08-02 | 新乡市宇航滤器机械有限公司 | A kind of filtering core for air bag gas filtering |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021021275A1 (en) * | 2019-07-26 | 2021-02-04 | Autoliv Asp, Inc. | Inflator filter for an inflatable airbag system |
| US11154802B2 (en) | 2019-07-26 | 2021-10-26 | Autoliv Asp, Inc. | Inflator filter for an inflatable airbag system |
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