CN1915713A - Dash board with integrated safety airbag cover - Google Patents
Dash board with integrated safety airbag cover Download PDFInfo
- Publication number
- CN1915713A CN1915713A CNA2005101067090A CN200510106709A CN1915713A CN 1915713 A CN1915713 A CN 1915713A CN A2005101067090 A CNA2005101067090 A CN A2005101067090A CN 200510106709 A CN200510106709 A CN 200510106709A CN 1915713 A CN1915713 A CN 1915713A
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- reinforcement
- air bag
- stiffened panel
- bag cover
- cover
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Abstract
A meter panel with integrated cover of safety air bag is disclosed. When the safety air bag is expanded, its cover is separated from the reinforced panel. It the reinforced panel, said cover and the adjacent region of reinforced panel are reinforced by the metallic sheet which has opening, shaping bosses and locating bosses. The process for preparing the reinforced panel is also disclosed.
Description
Invention field
The present invention relates in passenger vehicle inside and the power actuated vehicle fixedly protection system of front stall occupant.
Background of invention
Safety air bag is a vital part in the motor vehicle occupant comprehensive protector.The safety air bag that is used for the front stall passenger protection is usually located at instrument face plate inside, is positioned as close to when vehicle generation front shock, be occupant's the head position of safety strap.From the angle of safety air bag work, air bag cover must reliably and easily be opened under the expansion pressure effect, thereby for air-bag deployment allows open walk in the occupant space, and can not cause the damage of safety air bag.Do not allow any meeting to cause occupant part or fragment injured or that air bag damages from air bag cover or instrument face plate parts, to come off.Under the acceptable cost, need absolute functional reliability.Simple requiring safety air bag usually is invisible before expansion because of aesthetic reasons, and air bag cover should combine together with instrument face plate on profile, height and surface or be formed naturally a global facility.
The existing structure that has the instrument face plate of air bag cover is divided into two kinds of fundamental types usually:
A) air bag cover is that a separate part and its are not the parts of stiffened panel fully.Air bag cover just with suitable manner on the position of safety air bag opening part physical fixation in the instrument face plate, and when air-bag deployment, arrange or slip off.This type be the more complicated structure of representative usually, and it has more relatively parts.
B) integrated safety airbag cover is an integral part of stiffened panel, thereby it at first must be when air-bag deployment, owing to be subjected to the effect of swelling gasbag pressure, and separate from instrument face plate with its most of border, arrange and make safety air bag to go out then.Air bag cover can be integral design and swing aside as a whole (typically to the windscreen glass swinging), also can be two-piece design, and every half block air bag cover is to the one side oscillation.Such air bag cover and instrument face plate form one, and making may be with the better simply structure of less component set-up, but air bag cover and its have sizable mechanical load on every side.
Owing to make air bag cover from the crack that stiffened panel is separated, will be accurately along extending by groove or the defined airbag cover of perforation line border, so integrated safety airbag cover and adjacent stiffened panel to have reinforcement be necessary.The crack will be not bifurcated or depart from the airbag cover boundary line and extend, cause safety air bag to damage or the injured fragment of occupant to avoid forming any meeting.But the part on air bag cover border remains with stiffened panel and links to each other, and it is as the hinge of air bag cover.Reinforcement can be region-wide, strengthens the adjacent part of whole air bag cover and stiffened panel; Also can be part, near the part the part of the airbag cover that only tightens security and the hinge.
Being connected of reinforcement and air bag cover and stiffened panel can realize with two kinds of diverse ways: can be by reinforcement being pressed into the back side of air bag cover and stiffened panel, thus make reinforcement become an integral part of stiffened panel and air bag cover; Also can pass through to use machanical fastener, thereby reinforcement remains independent parts.The well-distributed opening uses with forced reinforcement usually on the reinforcement, and opening is dimensioned to the thermoplastic material of stiffened panel is penetrated in the reinforcement well.
Forced reinforcement, simultaneously, the reinforcement of air bag cover and adjacent stiffened panel can be by perforated sheet (referring to for example DE 4437773, US 5564733, JP2000318557, US 6565115), metallic grid (referring to US 5382047), fabric is (referring to DE 19962551, GB 2359283), knitted fibers or reticulated (referring to DE 19935625), fiber or yarn etc. are made, that is to say, anyly be suitable for being connected on air bag cover and the stiffened panel, be suitable for as the safety air bag cover hinge simultaneously, softness, flexible and strong design.
The material coefficient of thermal expansion of stiffened panel and air bag cover usually on the order of magnitude greater than the het expansion of reinforcement material, two kinds of materials overlap the non-constants of tack on surface simultaneously.Except that air bag cover and the unacceptable distortion of the frequent generation of stiffened panel, any variation of temperature all can cause producing very big internal stress between reinforcement, stiffened panel and air bag cover, this reinforcement that next can cause being connected on air bag cover and the stiffened panel lost efficacy.Owing to multiple reason, stiffened panel comprises air bag cover, and rigidity can not be consistent everywhere, thereby also inconsistent at its het expansion of diverse location.Evenly on the perforated sheet reinforcement surface more or less uniform rigidity and the irregularity in het expansion and stiffened panel and the air bag cover not too mate, it is with under the safety air bag extreme load effect of expanding, the bearing resistance of reinforcement and air bag cover and adjacent area junction worsens, and has aggravated to expand and be out of shape the fault that causes.Because reinforcement is very limited to the forced Joint strenght of stiffened panel and air bag cover, therefore, through regular meeting reinforcement takes place and separate or peel off the danger that causes safety air bag to damage from air bag cover and stiffened panel material.In addition, the surface that reinforcement is pressed into complete stiffened panel means extra production operation, and it makes the production of instrument face plate expensive more.
Summary of the invention
The present invention relates to structure with the instrument face plate of integrated safety airbag cover, by a single-piece air bag cover that is attached in the stiffened panel that is included in the instrument face plate, thereby on its shape, height and surface, formed a global facility with instrument face plate.
The part of stiffened panel wall thickness reduces or groove or perforation line occur along the air bag cover border, increase with the stiffened panel wall thickness of next-door neighbour's air bag cover, all deficiency so that air bag cover separates from stiffened panel reliably, and does not form fragment so that correctly extend in the crack.Practical experience shows, at least the base portion of air bag cover, safety air bag cover hinge connecting bridge, and the part of adjacent stiffened panel must be strengthened with crash-resistant reinforcement, for example by having the reinforcement that the projection and the sheetmetal of opening are made, improving bending stiffness and integraty, with and with air bag cover and stiffened panel bonded assembly intensity.When air-bag deployment, as the result of safety air bag pressure expansion, this single-piece air bag cover separates from stiffened panel with most of border, then along the join domain that constitutes the safety air bag cover hinge to the windscreen glass swinging.When air bag cover was only vertically acting under the safety air bag pressure expansion effect of safety air bag cap surface with its boundary separation, extreme load was born on air bag cover and border thereof.
The present invention mainly is a kind of principle: be attached to based on the air bag cover in the instrument face plate of stiffened panel, and the adjacent part of hinge connecting bridge and stiffened panel, strengthen by inner sheet metal reinforcement, wherein the sheet metal reinforcement has-a little openings and moulding projection, wherein when making stiffened panel, this reinforced sheet is inserted in the empty injection molding, and it is reinforced the thermoplastic material parcel of panel behind matched moulds.
Stiffened panel comprises integrated safety airbag cover and interior metal reinforcement, makes by injecting forming thermoplastic material in metal die.At first, reinforcement is inserted in the empty mould, behind the mould matched moulds, the thermoplastic melt of injection requirement is with complete filling mould shape chamber, and the parcel reinforcement.This method that reinforcement is connected to the plastic safety airbag cover is obtaining aspect the best quality of connection and capacity rating the method that reinforcement is pressed into gradually the stiffened panel and the air bag cover back side that is better than using so far.Whole parts are made in the single step operation of stiffened panel manufacturing fully, thereby productive costs is low as much as possible.In order to prevent that in the injection of plastic melt process reinforcement departs from its accurate position, reinforcement can have a lot of positioning boss, is used for making reinforcement reliably to locate at mould.
Owing to multiple reason, the rigidity of instrument face plate (comprising air bag cover) can not be consistent everywhere, so rigidity also can not be consistent everywhere on all surfaces of reinforcement.This can be by opening suitable dimension and opening is distributed unevenly realize on reinforcement, and further by adopting the moulding projection and realizing by designing correct reinforcement overall dimensions and exterior contour.The layout of reinforcement split shed and size, the size of moulding projection and position, and the exterior profile of reinforcement all is the result who trades off between space condition (stiffened panel and air bag cover design) and ask for something, these requirements comprise to be made because the residualinternal stress minimum that difference caused between reinforcement material and the stiffened panel material heat expansion, prevent the distortion of the meeting threat safety air bag normal function that the generation of air bag cover and near zone thereof is not expected, separate to reach subsequently outwards meeting with stresses in the process of swing at last at air bag cover, with the release fragment that prevents that air bag cover and near zone thereof from splitting and not expected.This technical scheme that is attached to the air bag cover in the instrument face plate has realized minimum number of components, minimum productive costs, has had and safety air bag does not take place damage and stop air bag cover or stiffened panel to produce the desirable safety air bag function of fragment as far as possible.
Description of drawings
Fig. 1 has represented to have the instrument face plate that comprises stiffened panel (2) of integrated safety airbag cover (1).
Fig. 2 represented to tighten security sheet metal reinforcement (4), the hinge connecting bridge (3) of airbag cover (1) and the adjacent area of stiffened panel (2).
Fig. 3 has represented that is parallel to a longitudinal direction of car axis, passes the cutaway view of air bag cover (1), and hinge connecting bridge (3) links to each other with the adjacent area of stiffened panel (2).
The specific embodiment
The stiffened panel 2 of band integrated safety airbag cover 1, comprise a metal reinforcement 4, this panel by the polypropylene-base material by making in injection moulding to one metal die, wherein in manufacturing process, at first this reinforcement 4 is inserted in the cavity of stiffened panel 2 moulds, the material parcel of the stiffened panel 2 that reinforcement 4 is melted behind matched moulds, this material is full of the entire die cavity.
Therefore, pressing mold sheet metal reinforcement 4 is not only at two part 4a, has opening 7 and moulding projection 8a on the 4b, 8b, and have positioning boss 9a, 9b, 9c so that reinforcement 4 is fixed on position correct in the injection mould, to end in the injection melt process, reinforcement 4 departs from its accurate desired location.For this reinforcement design, positioning boss 9a, 9b, 9c have three kinds of different patterns: edge positioning boss 9a is bandy that is stamped on reinforcement 4 edges, also has spherical positioning boss 9b and the beans shape positioning boss 9c that extrudes by pressing mold along reinforced region.The needs that they flow in mould according to melt, uneven distribution on reinforcement 4 surfaces.
Integrated safety airbag cover 1 is roughly rectangle, so just becomes the part of stiffened panel 2.When air-bag deployment, it must be along its most of border from stiffened panel 2 separates, then around the connecting bridge swing that constitutes hinge connecting bridge 3.The base portion of air bag cover 1, hinge connecting bridge 3, adjacent part with stiffened panel 2, strengthening toughness sheet metal reinforcement 4 by inside strengthens, wherein the sheet metal reinforcement has the moulding projection 8a of uneven distribution, 8b and opening 7, to improve bending stiffness and integraty, and with the Joint strenght of air bag cover 1 and stiffened panel 2, with only when the air-bag deployment under the expansion pressure effect at safety air bag, controlled fracture extension is provided, air bag cover 1 is correctly separated from stiffened panel 2, and do not produce any residue or fragment.
The edge-punching of air bag cover 1.Reinforcement 4 is the independent pressing mold sheetmetals of a slice, is made of two parts: 4a and 4b, and these two parts interconnect by bridging part 4c, and bridging part 4c strengthens constituting the connecting bridge of the air bag cover 1 hinge connecting bridge 3 on the reinforced panel 2.Bridging part 4c must have enough elasticity and rupture to prevent reinforcement 4 adjacent part from air bag cover 1 or stiffened panel 2 when the air-bag deployment, and bridging part 4c must have enough intensity to separate and outwards damage during swing at air bag cover to prevent it simultaneously.
A part 4a of reinforcement 4 is the shape (being parallel to windshield) of elongation, on the length of (approximately twice) connecting bridge length, be fixed in the stiffened panel 2, this connecting bridge is the hinge connecting bridge 3 of air bag cover 1 just, and on its width, adopt maximum clearance envelope to air flue, the power of bearing is delivered in stiffened panel 2 the best parts with hinge connecting bridge 3 by air bag cover 1 near windshield.This part 4a of stiffened panel is positioned at its back side, also by as the muscle that supports outstanding flange-around the framework 5 of air bag cover 1 perimeter, strengthens with the structures of plastics stiffened panel 2 itself.Another part 4b of reinforcement 4 is fixed in the air bag cover 1.It does not extend to around the defiber on air bag cover 1 border, the major part of airbag cover 1 but it tightens security.The profile of this part 4b of reinforcement 4 is consistent with the boundary shape of air bag cover 1, but at a distance of certain distance, has more complicated shape, opening and moulding projection with uneven distribution are optimised, so that because the internal stress minimum that reinforcement 4 and basis material thermal dilation difference cause, to obtain the rigidity and the intensity of maximum air bag cover 1.This particular design is characterised in that the little corner 6 of the extension that is similar to the wing.
Except that opening 7, in the elongated portion 4a of reinforcement 4, also have U-shape projection 8a, form two wide tees in its surface, this has strengthened this part vertical and horizontal bending stiffness of stiffened panel 2.
Except that opening 7, in another part 4b of reinforcement 4, also have similar U-shape projection 8b, the airbag cover 1 that tightens security forms two wide U-words of opening that intersection is opposite.Flat circular zone in the middle of the 4a, 4b each several part does not have opening, and this zone and reinforcement 4 are used for automation mechanized operation.
The present invention relates to the production of motor vehicle interiors plastic components, this car is equipped with the fixing protection system of occupant that comprises safety air bag.
Description of reference numerals:
1 air bag cover
2 stiffened panel
3 chain connection parts
4 reinforcements
4a strengthens the reinforcement part of stiffened panel
The tighten security reinforcement part of airbag cover of 4b
4c strengthens the reinforcement part of hinge connecting bridge, bridging part
5 frameworks around the safety air bag cover gab
The extension corner of reinforcement part in 6 air bag covers
7 reinforcement openings
8a strengthens the moulding projection of the reinforcement part of stiffened panel
The tighten security moulding projection of reinforcement part of airbag cover of 8b
9a regulates the edge positioning boss of reinforcement in mold cavity
9b regulates the spherical positioning boss of reinforcement in mold cavity
9c regulates the beans shape positioning boss of reinforcement in mold cavity
Claims (5)
1. instrument face plate that has integrated safety airbag cover (1), be arranged on the plastics stiffened panel (2), it is characterized in that, air bag cover (1) is strengthened by inner sheet metal reinforcement (4) with the adjacent part of hinge connecting bridge (3) and stiffened panel (2), this reinforcement (4) has some openings (7) and projection (8a, 8b), wherein reinforcement (4) is wrapped in the material of reinforced element (2).
2. instrument face plate according to claim 1 is characterized in that, opening (7) is at the lip-deep skewness of reinforcement (4).
3. instrument face plate according to claim 1 is characterized in that, (8a is 8b) at the lip-deep skewness of reinforcement (4) for projection.
4. instrument face plate according to claim 1 is characterized in that, have on reinforcement (4) surface a plurality of positioning boss (9a, 9b, 9c), the skewness of positioning boss wherein.
5. the manufacture method of instrument face plate according to claim 1, it is characterized in that, plastics stiffened panel (2) and air bag cover (1) are made simultaneously by injection-molded, wherein at first reinforcement (4) is inserted in the mould of stiffened panel (2) of a sky, behind matched moulds, it is filled the material parcel of the stiffened panel (2) of entire die die cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101067090A CN1915713A (en) | 2005-08-17 | 2005-08-17 | Dash board with integrated safety airbag cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101067090A CN1915713A (en) | 2005-08-17 | 2005-08-17 | Dash board with integrated safety airbag cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1915713A true CN1915713A (en) | 2007-02-21 |
Family
ID=37736833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101067090A Pending CN1915713A (en) | 2005-08-17 | 2005-08-17 | Dash board with integrated safety airbag cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1915713A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101462527B (en) * | 2007-12-18 | 2012-01-11 | 通用汽车环球科技运作公司 | Supplemental inflatable restraint system with hush panel housing |
| CN101445091B (en) * | 2007-11-28 | 2012-05-23 | 现代摩比斯株式会社 | Vehicular air bag door |
| CN102555972A (en) * | 2011-08-31 | 2012-07-11 | 延锋伟世通汽车饰件系统有限公司 | Automobile air bag fixing and reinforcing structure |
| CN107270053A (en) * | 2017-07-19 | 2017-10-20 | 环球智达科技（北京）有限公司 | A kind of television stand and its manufacture method |
| CN110024201A (en) * | 2016-11-29 | 2019-07-16 | 三星Sdi株式会社 | Secondary cell |
| CN115285060A (en) * | 2022-08-04 | 2022-11-04 | 上海延锋金桥汽车饰件系统有限公司 | Airbag door structure |
-
2005
- 2005-08-17 CN CNA2005101067090A patent/CN1915713A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445091B (en) * | 2007-11-28 | 2012-05-23 | 现代摩比斯株式会社 | Vehicular air bag door |
| CN101462527B (en) * | 2007-12-18 | 2012-01-11 | 通用汽车环球科技运作公司 | Supplemental inflatable restraint system with hush panel housing |
| CN102555972A (en) * | 2011-08-31 | 2012-07-11 | 延锋伟世通汽车饰件系统有限公司 | Automobile air bag fixing and reinforcing structure |
| CN102555972B (en) * | 2011-08-31 | 2014-04-16 | 延锋伟世通汽车饰件系统有限公司 | Automobile air bag fixing and reinforcing structure |
| CN110024201A (en) * | 2016-11-29 | 2019-07-16 | 三星Sdi株式会社 | Secondary cell |
| CN110024201B (en) * | 2016-11-29 | 2022-09-20 | 三星Sdi株式会社 | Secondary battery |
| CN107270053A (en) * | 2017-07-19 | 2017-10-20 | 环球智达科技（北京）有限公司 | A kind of television stand and its manufacture method |
| CN115285060A (en) * | 2022-08-04 | 2022-11-04 | 上海延锋金桥汽车饰件系统有限公司 | Airbag door structure |
| CN115285060B (en) * | 2022-08-04 | 2023-06-23 | 上海延锋金桥汽车饰件系统有限公司 | Airbag door structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |