CN1762742A - Head protection airbag device - Google Patents

Abstract

A head protecting airbag apparatus is disclosed which is folded to be installed in a housing portion of an automobile, in which an inflation gas discharged from an inflator to the front and rear sides of the automobile is guided obliquely downward into an inflation shielding portion of an airbag main body through an air inlet portion of the airbag main body and an inlet side portion of a deflector.

Description

Head portion protecting air bag apparatus

Technical field

The present invention relates to a kind of airbag apparatus, comprise air bag and aerator, airbag fold holds in the position to be contained in automobile, thereby by expanding gas is flowed into wherein, stretches out with the expansion of expanding from holding the position, and aerator is used for providing expanding gas to air bag.

Background technology

Routinely; as aforesaid head portion protecting air bag apparatus; a kind of like this head portion protecting air bag apparatus is arranged, wherein, at the air bag longitudinal middle part; expanding gas from the tubular inflating device of arranging along automobile longitudinal; turn to downwards through the metal diffuser, so that the expanding gas that so turns to can flow to air bag, then; make the expanding gas that flows to air bag like this be assigned to the front and back (for example, referring to JP-A-2003-146174) of air bag.

In addition, a kind of like this airbag apparatus is arranged, wherein air bag comprises tube-like interface portion, fastening by means of clip, interface portion is installed on the aerator and is attached thereto connect, be used for making expanding gas can flow to air bag (for example, referring to JP-A-2003-11768) from aerator.

Yet the diffuser that is suitable for making the expanding gas from the aerator of arranging along automobile longitudinal to turn to downwards needs bending, and is provided with relief port in its side, and these truths make the shape of diffuser become complicated, thereby its productive costs is increased.

In addition, in the above-mentioned connection structure of only utilizing clip that interface portion is connected with aerator, for example, under the situation that aerator output increases with bag volume, just have a kind of risk, that is, interface portion breaks away from from aerator when triggering aerator, therefore, still remaining to be improved aspect the raising Joint strenght.

Summary of the invention

To propose the present invention in order addressing the above problem, and to the purpose of this invention is to provide a kind of head portion protecting air bag apparatus, the expanding gas that need not to import from the air bag longitudinal middle part turns to downwards.

Another object of the present invention is, a kind of airbag apparatus is provided, even only utilizing clip with under air bag interface portion and the situation that aerator is connected, this airbag apparatus also can strengthen Joint strenght.

According to the present invention, a kind of head portion protecting air bag apparatus that is installed in automotive window top is provided, comprising:

Aerator has relief port, along vertical release expanding gas of described automobile;

Air bag, folding and be suitable for launching to cover described vehicle window inboard downwards when described expanding gas flows to wherein, described air bag comprises air bag main body and flexible fluid-directing cloth,

Wherein, described air bag main body comprises

The expansion shield portion flows to wherein by described expanding gas and to expand, with the described inboard of the described vehicle window of screening, and

The air inlet oral area is connected with described aerator, protrudes upward near described expansion shield portion upper angled the part its front end and rear end,

Wherein, described flow-guiding cloth comprises

Be arranged in the tubular import sidepiece to be connected in the described air inlet oral area, and be arranged in the outlet sidepiece that is positioned near the position of described air inlet oral area on the described expansion shield portion with described aerator,

Described import sidepiece is suitable for the described expanding gas that guiding is downwards emitted from described aerator, and

Described outlet sidepiece comprises first air gate and second air gate, and above-mentioned air gate is suitable for allowing the described expanding gas that flows out from described import sidepiece, at described automobile longitudinal, along described expansion shield portion, flows to front side and rear side.

In head portion protecting air bag apparatus of the present invention, because expanding gas longitudinally discharges, just can simplify the gas turns unit of aerator, as diffuser, thereby productive costs is minimized.Further, because the gas from relief port discharges can not blow to over against the part of the flow-guiding cloth import sidepiece of this relief port, in contrast with the right angle, blow out but gas guided to become to be tilted to down, therefore can reduce the damage that relevant portion is caused by expanding gas.In addition, because make the admission port portion of air bag main body be positioned at the outside of this relevant portion, so that this part is supported, so, just can further reduce the damage that relevant portion is caused by expanding gas.

In addition, in order to reduce the damage of the suturing part of contrast a little less than the other parts, preferably, by the suturing part that forms with lignilite, the described import sidepiece of described flow-guiding cloth is formed tubulose by a slice cloth, and, wherein, described suturing part is arranged as not over against described relief port.

In addition, preferably, the connecting portion between the venting side of described expansion shield portion and described air bag main body air inlet oral area, perhaps near the part described connecting portion is fixed on the vehicle body of described automobile.By adopting this structure, can obtain aforementioned flow-guiding cloth with the failure-free mode and support effect at air inlet oral area place.

According to the present invention, a kind of airbag apparatus is provided, comprising: air bag, fold and be contained in automobile and hold the position, flow to wherein by expanding gas, it is stretched out from the position, described accommodation section, launch to expand; And

Aerator is used to described air bag that described expanding gas is provided;

Wherein, described air bag comprises tubular interface portion, by fastening, should tubular interface portion be assemblied on the described aerator and be attached thereto and connect by clip, and allowing entering described air bag from the described expanding gas of described aerator, and

Wherein, described interface portion has salient, and when described interface portion was connected with described aerator, this salient was arranged on the position more forward than described clip, and described salient stops described interface portion to break away from from described aerator.

In airbag apparatus of the present invention, passing through fastening clip, to be assemblied in interface portion on the aerator with after aerator is connected, even under these circumstances, promptly, make interface portion be subjected to unexpected and violent promotion, attempt to make under its situation about breaking away from from airbag inflator at the airbag inflation initial stage, salient is stuck between clip and the aerator as chock, plays the effect that stops clip and interface portion to break away from from aerator.Thus, compare, can strengthen the Joint strenght of interface portion and aerator with the correlation technique airbag apparatus that this salient is not set.

Therefore, in airbag apparatus of the present invention,, promptly utilize under the situation that clip is connected to each other air bag interface portion and aerator, also can strengthen Joint strenght even adopting the situation of following structure.

In addition, in airbag apparatus of the present invention, can only salient be set on interface portion, therefore, such salient can easily be provided, and need not employed airbag design in the correlation technique airbag apparatus is carried out big change.

Further, in the airbag apparatus of configuration as mentioned above, preferably, salient is provided with the suturing part that utilizes lignilite to form.In the airbag apparatus of configuration like this,, can more easily provide salient because only need to utilize lignilite on the air bag of correlation technique, to form suturing part.

In addition, in the airbag apparatus of configuration as mentioned above, can adopt such structure, wherein, the position of described interface portion is set on described air bag, hollow or tubing are set, and

By changing the weaving structure of described hollow or tubing, the thickness of described lug boss is increased, described lug boss is set.

It should be noted that, though above described by interior pipe being set in the position that interface portion is set, interface portion is formed double-decker, even under the situation of using this air bag, by lug boss is set on inner pipe, also can form salient, and further, can and on the interior pipe lug boss be set all on the position that constitutes the interface portion outer circumferential side on the air bag, form salient.

Description of drawings

Fig. 1 is the front schematic view of the first embodiment of the invention head portion protecting air bag apparatus that obtains when the inboard is watched;

Fig. 2 is the partial enlarged drawing that the aerator position is set in this first embodiment airbag apparatus;

Fig. 3 is the front elevation that this first embodiment flow-guiding cloth is shown;

Fig. 4 is schematic amplification view, illustrates between the air bag main body of this first embodiment airbag apparatus and the aerator near the connection location;

Fig. 5 is the local amplification view that the aerator position is set in the second embodiment airbag apparatus;

Fig. 6 is schematic amplification view, illustrates near the interface portion and the connection location between the aerator of this second embodiment airbag apparatus;

Fig. 7 is the front elevation that the flat of this second embodiment air bag is shown;

Fig. 8 illustrates the air bag of this second embodiment and the front elevation of interior pipe;

Fig. 9 is the front elevation that pipe in another form is shown;

Figure 10 is the cutaway view that the interior pipe shown in Fig. 9 is provided with the position of salient;

Figure 11 is a scheme drawing, and a part of weaving structure of interior pipe shown in Fig. 9 is shown.

The specific embodiment

(first embodiment)

With reference to the accompanying drawings first embodiment of the present invention is described.Head portion protecting air bag apparatus is contained on the automobile V, begins along holding the position that the RR of roof rail portion on car door and vehicle window W1, W2, W3 top extends to form from the FP of front pillar portion so that it is installed in the car inboard.Should be noted that this automobile disposes like this, between FP of front pillar portion and the RP of rear pillar portion, the first center pillar portion P1 and the second center pillar portion P2 are set, make their above-below direction extensions basically.

As shown in Figure 1 and Figure 2; head-protecting airbag M1 is configured to comprise:air bag 12;aerator 34;mounting bracket 31,38; hold-downbolt 32,39, and comprise theclip 40 thatair bag 12 is connected withaerator 34, and when being installed in automobile V and going up; covering under the state of head portion protecting air bag apparatus M1 inboard withairbag cover 10, it is being contained in holds in the position.Under the situation of present embodiment,airbag cover 10 is provided with the post that covers front pillar portion FP inboard and decorates 4 lower edge side position, and the lower edge side position that covers theinside ceiling panel 5 of roof rail portion RR inboard.

Post decorate 4 and insideceiling panel 5 make by synthetic resin, and use unshowned fabricated section, install them on the inboard as the inner panel of FP of front pillar portion and roof rail portion RRplace vehicle body 1 side component.Like this, these lower edge side positions are configured to, whenair bag 12 expands and launches, open, so thatair bag 12 can stretch out from its lower edge side to the car inboard.

As shown in Figure 1, under the state that has foldedair bag 12,air bag 12 is contained in holds in the position, this holds the position and begins to extend along the RR of roof rail portion from the FP of front pillar portion, cross over the first center pillar portion P1 and the second center pillar portion P2, extend near the part that is positioned at the RP of the rear pillar portion top.Thereby, shown in long and two-short dash line among Fig. 1,air bag 12 can cover respectively with the lower part when being configured to expansion and expansion, be positioned at the car inboard of vehicle window W1, the W2 of first center pillar portion P1 front and back vertically, and the car inboard of the vehicle window W3 between the second center pillar portion P2 and vehicle window W3, and cover the car inboard of the first center pillar portion P1 and the second center pillar portion P2.

In addition, as shown in Figure 1 and Figure 4,air bag 12 is provided with air bagmain body 13 and flow-guiding cloth 27.Air bagmain body 13 comprises:expansion shield portion 15, and when by flowing into that wherein expanding gas makes its expansion and when launching,expansion shield portion 15 can cover the car inboard of center pillar portion P1, P2 and vehicle window W1, W2, W3; Air inlet oral area 26 is connected it withaerator 34, provide expanding gas with the medium position toexpansion shield portion 15, and the medium position ofexpansion shield portion 15 does not comprise its leading section and rearward end; And a plurality ofinstallation portions 29, hereinair bag 12 is installed to automobileV vehicle body 1 side.

Air bagmain body 13 is made for flexible bags, and weaves through hollow or tubulose with polyamide thread etc. and to form.Should be noted that when being made into thatexpansion shield portion 15, air inlet oral area 26 andinstallation portion 29 are with air bagmain body 13 whole making when utilizing hollow or tubulose to weave.In addition, finish weave after, on the outside face of air bagmain body 13, apply smears such as silicone resin, to improve resistance to effect of heat.

As shown in Figure 4,expansion shield portion 15 is provided with: bulge, and this bulge just expands when the expanding gas fromaerator 34 flows into; And the unexpansive portion that is positioned at the bulge periphery.Should be noted thatinstallation portion 29 forms the part of unexpansive portion.

Air inlet oral area 26 is arranged in the longitudinal middle part position basically along air bagmain body 13 upper limbs, and forms to tilt to protrude upward.Specifically describe and to be exactly, shown in long and two-short dash line among Fig. 4, air inlet oral area 26 is formed linearity, relatively vertically become the inclination that (is approximately 30 degree the present embodiment) from 15 degree to 45 degree simultaneously, and its distal portion installs to agley on the automobile V.

The position that is woven into cloth remaining after hollow or the tubular form by air bagmain body 13 forms flow-guiding cloth 27, and flow-guiding cloth 27 comprises tubulose import sidepiece 27a and outlet sidepiece 27f, import sidepiece 27a is arranged as along air inlet oral area 26 inner inclination, to contact substantially with air inlet oral area 26, and outlet sidepiece 27f is connected with import sidepiece 27a, admitting from import sidepiece 27a effluent air, thereby the gas that guiding is admitted enters expansion shield portion 15.Outlet sidepiece 27f comprises the second air gate 27c that gas is flowed forward, and the first air gate 27b that gas is flowed backward.

As shown in Figure 3, by will folding up along fold line 27d with respect to a slice cloth that fold line 27d laterally is mutually symmetrical, and the cloth of locating so to fold at suturing part 28 (27e) partly unites by a seam, thereby forms flow-guiding cloth 27.

A plurality of (in the present embodiment being 7)installation portion 29 is set, and the outer peripheral edges portion position of air bagmain body 13 upper limb sides protruded upward wheninstallation portion 29 was launched from expanding along air bag main body 13.Especially, the connecting portion place between vertical front side of air inlet oral area 26 and expanding gas shield portion 15 (release gas side) forms installation portion 29.Mounting bracket 31 is fixed on eachinstallation portion 29, so thatair bag 12 is installed on the inner panel, and on eachinstallation portion 29, forms mounting hole, thereby hold-downbolt 32 can be passed wherein.Then, utilize hold-downbolt 32, eachinstallation portion 29 is fixed on the inner panel thatvehicle body 1 side made by metal sheet withmounting bracket 31.

As Fig. 1, Fig. 2 and shown in Figure 4,aerator 34 is included as themain part 35 that foldingair bag 12 provides expanding gas, and guiding is from the diffuser 36 of the expanding gas ofmain part 35 releases.

Main part 35 roughly forms cylindric, and comprises head 35a, and expanding gas discharges from here.

Diffuser 36 roughly forms short metallic cylinder, and fixes by the root side to diffuser 36, and its distal portion withmain part 35 is connected, to cover head 35a.In diffuser 36, make relief port 36a at its terminal part opening.By air inlet oral area 26 and import sidepiece 27a,interface portion 25 is formed double-decker,interface portion 25 is assemblied on the diffuser 36, and utilizes theclip 40 that nearposition interface portion 25 rear ends, assembles, diffuser 36 is connected withair bag 12.

Fix and be connected under the situation ofmain part 35 distal portion at diffuser 36, utilizemounting bracket 38 and hold-downbolt 39, withaerator 34 along on the inner panel that vertically is installed invehicle body 1 of automobile V.

Clip 40 is configured to comprise: the main part 40a that can be assemblied in the roughly circular arc on theinterface portion 25; And bolt 40c and nut constitute the securing device of fastening main part 40a end.

Next, first installation of embodiment head portion protecting air bag apparatus M1 on automobile V described.At first, by flow-guiding cloth 27 is inserted air inlet oral areas 26, and make suturing part 27e be positioned rear side, suturing part 27e formsair bag 12 not over against the 36a of venting portion herein, thereafter,air bag 12 is folded up.Should be noted that far-end thermal welding with the import sidepiece 27a of flow-guiding cloth 27 is on air inlet oral area 26, with coupled.Particularly, under the also unexpanded flattened state ofair bag 12,, make its lower edge side,air bag 12 is folded into corrugated near its upper limb side by forming recessed in succession and protruding.Then, after so folding, with unshowned windingmaterial air bag 12 is twined, scatter to avoid its folded state in the desired location, and, mountingbracket 31 is installed in respectively on theinstallation portion 29 in advance.In addition, also mountingbracket 38 is installed on theaerator 34 in advance.

Then, with on it theinterface portion 25 ofassembly ring 40 be assemblied on the diffuser 36 ofaerator 34, flow-guiding cloth 27 is mediate, fastening by means ofclip 40 couples together diffuser 36 andair bag 12, thereby forms airbag assembly.

, as shown in Figure 1 and Figure 2, mountingbracket 31,38 be arranged in the installation site of automobileV vehicle body 1 side on, withbolt 32,39 itself and inner panel fixed then, thereby airbag assembly is installed on thevehicle body 1 thereafter.At this moment, make theinterface portion 25 that is provided with air inlet oral area 26 and import sidepiece 27a in its distal portion bending, and with theexpansion shield portion 15 ofaerator 34 and theair bag 12 vertical layout along automobile V.Arrange the remainder ofinterface portion 25 like this, makeexpansion shield portion 15 andaerator 34 be connected to each other in the bevelled mode.

After airbag apparatus M1 is installed on the automobile V, when triggeringaerator 34, expanding gas G from aerator 34 can be flowed out from the relief port 36a of diffuser 36, import sidepiece 27a and the first air gate 27b and the second air gate 27c via flow-guiding cloth 27, enterexpansion shield portion 15, flowing to the front and back side ofexpansion shield portion 15, thereby air bagmain body 13 begins to expand, and that launches simultaneously to form as previously mentioned is folding.So, air bagmain body 13 disconnects unshowned winding material, and further push open and be equipped with front pillar and decorate 4 and theairbag cover 10 ofinside ceiling panel 5 lower edges, so that it can stretch out downwards from holding the position, thereby air bagmain body 13 is expanded greatly, to cover the inboard of vehicle window W1, W2, W3 and center pillar portion P1, P2, shown in long and two-short dash line among Fig. 1.

In addition, in the airbag apparatus M1 of first embodiment, because make expanding gas G be discharged into automobile V front side from the relief port 36a of diffuser 36, so playing the diffuser 36 of expanding gas steering hardware effect can form as the short cylinder in the first embodiment situation, and can simplify the structure of diffuser 36, thereby productive costs is reduced.In addition, because be tilted to down the guiding expanding gas, so can reduce owing to the gas G from relief port 36a directly blows to the damage that the import sidepiece 27a of flow-guiding cloth 27 produces by the air inlet oral area 26 of the import sidepiece 27a of flow-guiding cloth 27 and air bag main body 13.In addition, because the place ahead of inlet side 27a is arranged to be in contact with it basically along air inlet oral area 26, and the front side root (with expansion shield portion 15 bonded assembly parts) of air inlet oral area 26 and vehicle body 1 fixed, just support the import sidepiece 27a of flow-guiding cloth 27 in the failure-free mode by air inlet oral area 26, thereby can further reduce the damage that causes by gas G, just can not occur destroying the situation of flow-guiding cloth 27 normal conditions yet, thereby gas G is longitudinally flowed in the failure-free mode by gas G.

In addition, because suturing part 27e is over against relief port 36a, thus the situation that gas G directly blows to suturing part 27e can not appear, thus can reduce the damage of suturing part 27e.

It should be noted that; although in the head portion protecting air bag apparatus M1 of first embodiment; the front side of flow-guiding cloth 27 import sidepiece 27a (aerator 34 gas G discharge side) is arranged to contact with the front interior of air bagmain body 13 air inlet oral areas 26; because gas G makes import sidepiece 27a and air inlet oral area 26 produce press contacts, so remain with the gap in corresponding position between import sidepiece 27a and the air inlet oral area 26.In addition, althoughinstallation portion 29 is arranged on the connecting portion place between air inlet oral area 26 front sides and theexpansion shield portion 15, as long asinstallation portion 29 enough is close to the support effect that keeps aforementioned import sidepiece 27a each other with air inlet oral area 26, also can makeinstallation portion 29 be set to leave air inlet oral area 26.

In addition, although gas G is discharged forward from aerator 34, gas G is discharged backward.In the case, according to these discussion in first embodiment, the position of can reverse in the horizontal flow-guiding cloth and air inlet oral area.

(second embodiment)

With reference to the accompanying drawings second embodiment of the present invention is described.According to the head portion protecting air bag apparatus M2 of second embodiment, to be installed on the automobile V, as shown in fig. 1 with the similar form of first embodiment.

As Fig. 7, shown in Figure 8,air bag 112 is provided with:main part 113, and whenair bag 112 was finished it and expand to be launched,main part 113 can cover the inboard of center pillar portion P1, P2 and vehicle window W1, W2, W3;Interface portion 125, it is connected withaerator 134, entersmain part 113 inside so that expanding gas to be provided; And a plurality ofinstallation portions 129, theair bag 112 that is used for holding position P is installed tovehicle body 101 sides of automobile V.Under the situation of present embodiment,interface portion 125 forms double-decker, and it is provided withmain part 113 integrally formedperipheral parts 126, andpipe 127 in being provided with, andinterior pipe 127 forms the body that separates withmain part 113.

Main part 113 is made for flexible bags, and weaves through hollow or tubulose with polyamide thread etc. and to form.Should be noted that when utilizing hollow or tubulose to weave to be made into theperipheral part 126 ofinterface portion 125 andinstallation portion 129 are with air bagmain body portion 113 whole making.In addition, finish weave after, on the outside face ofmain part 113, apply smears such as silicone resin, to improve resistance to effect of heat.

As Fig. 7, shown in Figure 9, air bagmain body portion 113 is provided with:gas flow portion 115 is suitable for making its expansion by the expanding gas that flows out fromaerator 134, therebyinner wall part 115a andoutside wall portions 115b is separated from each other; Andnon-pneumatic flow portion 120, it forms like this, andinner wall part 115a andoutside wall portions 115b are linked together, thereby stops expanding gas to flow into wherein.It should be noted that, although under the situation of second embodiment,main part 113 is configured to comprise thecloth 124 that separates withmain part 113, and this cloth is sewn to the front ofmain part 113, but the position of thiscloth 124 also can be weaved withmain part 113 whole formation by hollow or tubulose.

Bulge 117 and afterexpansion portion 118 beforegas flow portion 115 comprises, when expanding gas flows togas flow portion 115, precedingbulge 117 is suitable for expanding and launches to cover vehicle window W1 inboard in the front chair side, afterexpansion portion 118 is suitable for expanding and launches to cover vehicle window W2 inboard in the back seat side, andgas flow portion 115 also comprises airsupply duct portion 116, airsupply duct portion 116 is arranged to the longitudinal extension along automobile V, so that can enter front and back bulge 117,118 from the expanding gas ofinterface portion 125.

The outerperipheral edges portion 121 thatnon-pneumatic flow portion 120 compriseslimited section 122, plate-like portion 123 and is arranged to center on gas communication portion 115.A plurality of positions in front and back bulge 117,118 are provided withlimited section 122, make its wire extension along the vertical direction, the thickness of bulge 117,118 before and after limiting by this way, its thickness also can locally not increased when two bulges are all finished its expansion, thereby can keep its tabular profile.Theselimited sections 122 form T shape or reversed J shape, make their outerperipheral edges portion 121 beginning vertical extent frommain part 113 lower edge 113b sides, and itself and outerperipheral edges portion 121 are separated.Bulge 117,118 is divided into a plurality of vertically extendingvertical air chamber 117a, 118a separately before and after should be noted that.Plate-like portion 123 forms the rectangular plate shape profile, and is arranged on the below of the airsupply duct portion 116 between the bulge 117,118 of front and back.

In the longitudinal middle part position, perhaps under the situation of second embodiment, theperipheral part 126 that constitutesinterface portion 125 is arranged inmain part 113 upper limb 113a sides in the position above precedingbulge 117 rear ends, and forms it into and protrude upward.Particularly,peripheral part 126 roughly forms L shaped, and it comprises the 116 upwardly extendingvertical tube 126a of portion from air supply duct portion, and comprises thehorizontal tube section 126b that extends back from the 126a of vertical tube portion upper end, and makes the open rearward end ofhorizontal tube section 126b.

In addition, constitute theinterior pipe 127 of perimembranous in theinterface portion 125, side, position remaining aftermain part 113 is made into hollow or tubulose forms, andinterior pipe 127 comprises:horizontal tube section 127a is arranged in thehorizontal tube section 126a ofperipheral part 126; And the 127b of vertical tube portion, its front end fromhorizontal tube section 127a extends downwardly into the airsupply duct portion 116 that reaches.Air extractor duct 127c, 127d are in the following manner at the lower end opening of the 127b of vertical tube portion, when the 127b of vertical tube portion is arranged in the zone of airsupply duct portion 116 ofmain part 113,pipe 127 is located in theperipheral part 126 in this moment, makes expanding gas to tilt by this air extractor duct and down flows out forwards, backwards.Then, wheninterface portion 125 is connected withdiffuser 136, in the position thanclip 140levelling pipe 127a more backward,form suturing part 128 with lignilite, it plays the effect of the lug boss of the salient 125a that constitutes interface portion 125.Thissuturing part 128 forms around the whole periphery ofhorizontal tube section 127a, its surface fromhorizontal tube section 127a is protruded, and setting is used forstoping interface portion 125 to break away from fromdiffuser 136.

Then,interface portion 125 is assemblied on thediffuser 136 ofaerator 134, makesrelief port 136a be arranged near the upper position of the 127b of vertical tube portion, hereinafter will be described diffuser 136.Underinterface portion 125 is assemblied in state on thediffuser 136,,interface portion 125 is connected withdiffuser 136 by fastening metal integratedcircuit board hoop 140.

A plurality of (under the situation of present embodiment being 7)installation portion 129 is set, outerperipheral edges portion 121 positions on the upper limb 113a side during frommain part 113 expansion expansion and the position on thecloth 124, installation portion protrudes upward.Be used for the mountingbracket 131 thatair bag 112 is installed on theinner panel 102 is fixed on eachinstallation portion 129, and form mountinghole 129a on eachinstallation portion 129, hold-down bolt 132 can pass wherein.Then, holding P place, position, eachinstallation portion 129 is fixed on the metal sheetinner panel 102 ofvehicle body 101 sides with mountingbracket 131 with hold-down bolt 132.

As shown in Figure 5,aerator 134 comprises:main part 135, and it provides expanding gas for foldingair bag 112; Anddiffuser 136, the expanding gas that its guiding discharges frommain part 135.

Main part 135 is substantially shaped as cylindric, and compriseshead 135a in its distal side.In addition, inhead 135a,form relief port 135b, make it be suitable for discharging expanding gas (referring to Fig. 6).

Diffuser 136 is formed by columnar metal pipe material haply, makes its far-end sealing, and by fixing to coverhead 135a indiffuser 136 root sides, the far-end ofdiffuser 136 withmain part 135 is connected.Ondiffuser 136 distal side lower surfaces, V is vertical along automobile, opens tworelief port 136a continuously.Theinterface portion 125 ofair bag 112 is assemblied on thediffuser 136, and utilizes nearinterface portion 125 rear ends position to be assembled to clip 140 on theinterface portion 125,diffuser 136 is connected withair bag 112.

Fixdiffuser 136 and make its with state that the far-end ofmain part 113 is connected under, utilize mountingbracket 138 and hold-down bolt 139,aerator 134 vertically is installed on theinner panel 102 ofvehicle body 101 along automobile V.

Clip 140 comprises: themain part 140a that can be assemblied in the circular arc basically on theinterface portion 125, be formed on protrudingpinna 140b, the 140b ofmain part 140a end, and as thebolt 140c and thenut 140d of the securing device of the 140b of fastening lug portion,140b.In clip 140,main part 140a is arranged around the periphery that is assemblied in theinterface portion 125 on thediffuser 136, andbolt 140c and thenut 140d that is arranged on one of protrudingpinna 140b be fastened, bymain part 140a is fastened ondiffuser 136 sides, therebyinterface portion 125 is connected withdiffuser 136.

Next, second installation of embodiment head portion protecting air bag apparatus M2 on automobile V described.At first, makeair bag 112 in theperipheral part 126, subsequently, the air bag of so making 112 is folded up byinterior pipe 127 is insertedinto.Pipe 127 thermal weldings are onperipheral part 126 in should be noted that.Particularly, under the also unexpanded flattened state ofair bag 112, by forming recessed in succession and protruding,air bag 112 is folded into corrugated, the lower edge 113b side that makesmain part 113 is near its upper limb 113a side, shown in long and two-short dash line among Fig. 7.Then, after so folding, with unshowned windingmaterial air bag 112 is wound up, scatter to avoid folded state, and mountingbracket 131 is installed on theinstallation portion 129 separately in advance in the pre-position.In addition,clip 140 is installed in advance oninterface portion 125, make its installation site be positioned at than the salient 125a on theinterface portion 125 more forward (main part 113 sides) locate, and mountingbracket 138 is installed on theaerator 134 in advance.

Then, with on it theinterface portion 125 ofassembly ring 140 be assemblied on thediffuser 136 ofaerator 134, inpipe 127 mediate,bolt 140c andnut 140d thereof byfastening clip 140, themain part 140a offastening clip 140,diffuser 136 andair bag 112 are coupled together, thereby make airbag assembly.

, mounting bracket 131,138 be arranged in the holding position P on ofauto body 101 sides,, thereby airbag assembly be installed on thevehicle body 101 with itself andinner panel 102 is fastening with bolt 132,139 thereafter.Subsequently, unshowned lead is connected withaerator 134, this lead extends from predetermined aerator operation control unit comes, post decoration 4 and inside ceiling panel 5 (referring to Fig. 1) are fixedly mounted on thevehicle body 101, and then post is decorated 6,7,8 (referring to Fig. 1) be installed on thevehicle body 101, thereby airbag apparatus M2 can be installed on the automobile V.

Thereafter, on automobile V, install after the airbag apparatus M2, under the situation that triggersaerator 134, expanding gas G fromaerator 134, eachrelief port 136a fromdiffuser 136, viainterface portion 125, the airsupply duct portion 116 of supplygas flow portion 115, and eachvertical air chamber 117a, 118a of bulge 117,118 before and after the expanding gas G that provides so further continues to flow into, shown in long and two-short dash line among Fig. 7, thereby themain part 113 ofair bag 112 begins to expand, and that launches simultaneously to form as described above folds.Then,main part 113 disconnects unshowned winding material, and further push open and be provided with front pillar and decorate 4 and the airbag cover 10 (referring to Fig. 1) ofinside ceiling panel 5 lower edges, to stretch out downwards from holding position P, therebymain part 113 is expand on a large scale cover the degree of vehicle window W1, W2, W3 and center pillar portion P1, P2 inboard, shown in long and two-short dash line among Fig. 1.

In addition, in the airbag apparatus M2 of second embodiment, because onair bag 112interface portion 125, form salient 125a (suturingpart 128 of interior pipe 127) thanclip 140 position more backward, to stopinterface portion 125 to break away from from thediffuser 136 ofaerator 134, to be assemblied ininterface portion 125 onaerator 134diffusers 136 byfastening clip 140 with afterdiffuser 136 is connected, even under the following situation, for example, at the initial stage thatair bag 112 expands, promote theinterface portion 125 ofair bag 112 suddenly and fiercely, it is tending towards under the situation ofdiffuser 136 disengagings, salient 125a (suturing part 128) is stuck betweenaerator 134 and thediffuser 136, thereby play the effect of chock, it stopsclip 140 andinterface portion 125 to break away from from diffuser 136.Therefore, compare, can improve the Joint strenght ofinterface portion 125 andaerator 134 with the correlation technique airbag apparatus situation that this salient is not set.

Therefore, in the airbag apparatus M2 of second embodiment, even theinterface portion 125 ofair bag 112 be configured to utilizeclip 140 and with situation that aerator 134 is connected under, also can improve Joint strenght.

In addition, in the airbag apparatus M2 of second embodiment, can only formsuturing part 128 on theinterior pipe 127 that formsinterface portion 125, the preparation of salient 125a is just handled than being easier to like this, and need not big change is carried out in the design of the air bag that uses in the correlation technique airbag apparatus.Particularly, in the airbag apparatus M2 of second embodiment, becauseform suturing part 128 oninterior pipe 127, andinterior pipe 127 is what to separate withmain part 113, so employed air bag can also use as usual in the correlation technique airbag apparatus.

In addition, in the airbag apparatus M2 of second embodiment,, can only on the air bag of correlation technique, utilize lignilite to form suturing part, so the preparation of salient can be more prone to handle because salient 125a is provided with thesuturing part 128 that forms with lignilite.

In addition, the structure shown in Fig. 9, Figure 10 can be used as interior pipe 142.To aforementioned in pipe 127 similar, interior pipe 142 is weaved by hollow or tubulose and is made, and is provided with: horizontal tube section 142a, it is arranged in the horizontal tube section 126b of peripheral part 126; The 142b of vertical tube portion, its front end from horizontal tube section 142a extends the air supply duct portion 116 that reaches downwards; And air gate 142c, 142d, be arranged on the lower end of the 142b of vertical tube portion.In addition, on horizontal tube section 142a, near the position horizontal tube section 142a rear end forms lug boss 143, and it constitutes salient, is suitable for stoping interface portion 125 to break away from from diffuser 136.Under the situation of second embodiment, weave when being shaped at hollow or tubulose, by changing the thickness of the position weaving structure that lug boss 143 will be set, make its thickness increase that lug boss 143 is set.Particularly, pipe 142 in the structure like this makes the weaving structure that lug boss 143 positions are set, and as shown in figure 11, knitted by 3 * 3 satin and to form, and its thickness is thicker than other positions of horizontal tube section 142a that 1 * 1 plain weave forms.Adopting under the situation of so constructing, when when weave formation with hollow or tubulose in, managing 142, can form lug boss with interior pipe 142, thereby can omit the operation of independent formation lug boss.

It should be noted that; in the head portion protecting air bag apparatus M2 of second embodiment; wherein used such air bag; pipe 127 (142) in the position that interfaceportion 125 is set is provided with; therebyinterface portion 125 is formed double-decker, and the lug boss 128 (143) that will constitute salient 125a be arranged on the pipe 127 (142).Certainly, airbag apparatus of the present invention also can be applied to such airbag apparatus, and wherein the air bag of Cai Yonging has the single layer structure interface portion that interior pipe is not set.Further, interface portion forms under the double-deck situation in air bag, can adopt such configuration, wherein, constitutes at air bag on the position and interior pipe of interface portion outer circumferential side, all forms the lug boss that constitutes salient.In addition, in second embodiment,, its whole periphery that centers onhorizontal tube section 127a, the 142a of interior pipe 127,142 is provided with continuously, also lug boss can be set discontinuously although lug boss 127 (128), 143 is configured to.

In addition, although in conjunction with head portion protecting air bag apparatus as an example second embodiment is described, can uses airbag apparatus of the present invention and be not limited thereto, therefore, the present invention can be applied to lateral gasbag device etc.

Claims (6)

1. head portion protecting air bag apparatus that is installed in automotive window top comprises:

Aerator has relief port, along vertical release expanding gas of described automobile;

Air bag, folding and be suitable for launching to cover described vehicle window inboard downwards when described expanding gas flows to wherein, described air bag comprises air bag main body and flexible fluid-directing cloth,

Wherein, described air bag main body comprises

The expansion shield portion flows to wherein by described expanding gas and to expand, with the described inboard of the described vehicle window of screening, and

The air inlet oral area is connected with described aerator, protrudes upward near described expansion shield portion upper angled the part its front end and rear end,

Wherein, described flow-guiding cloth comprises

Be arranged in the tubular import sidepiece to be connected in the described air inlet oral area, and be arranged in the outlet sidepiece that is positioned near the position of described air inlet oral area on the described expansion shield portion with described aerator,

Described import sidepiece is suitable for the described expanding gas that guiding is downwards emitted from described aerator, and

Described outlet sidepiece comprises first air gate and second air gate, and above-mentioned air gate is suitable for allowing the described expanding gas that flows out from described import sidepiece, at described automobile longitudinal, along described expansion shield portion, flows to front side and rear side.

2. head portion protecting air bag apparatus according to claim 1 wherein, by the suturing part that forms with lignilite, the described import sidepiece of described flow-guiding cloth is formed tubulose by a slice cloth, and wherein, described suturing part is arranged as not over against described relief port.

3. head airbag fender guard according to claim 1, wherein, the connecting portion between the venting side of described expansion shield portion and described air bag main body air inlet oral area, perhaps near the part described connecting portion is fixed on the vehicle body of described automobile.

4. airbag apparatus comprises:

Air bag folds and is contained in automobile and holds the position, flows to wherein by expanding gas, and it is stretched out from the position, described accommodation section, launches to expand; And

Aerator is used to described air bag that described expanding gas is provided;

Wherein, described air bag comprises tubular interface portion, by fastening, should tubular interface portion be assemblied on the described aerator and be attached thereto and connect by clip, and allowing entering described air bag from the described expanding gas of described aerator, and

Wherein, described interface portion has salient, and when described interface portion was connected with described aerator, this salient was arranged on the position more forward than described clip, and described salient stops described interface portion to break away from from described aerator.

5. airbag apparatus according to claim 4, wherein, described salient is provided with the suturing part that utilizes lignilite to form.

6. airbag apparatus according to claim 4 wherein, is provided with the position of described interface portion on described air bag, hollow or tubing are set, and

By changing the weaving structure of described hollow or tubing, the thickness of described lug boss is increased, described lug boss is set.

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