CN100404323C - Airbag system - Google Patents

Airbag system Download PDF

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Publication number
CN100404323C
CN100404323C CNB2004101031677A CN200410103167A CN100404323C CN 100404323 C CN100404323 C CN 100404323C CN B2004101031677 A CNB2004101031677 A CN B2004101031677A CN 200410103167 A CN200410103167 A CN 200410103167A CN 100404323 C CN100404323 C CN 100404323C
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CN
China
Prior art keywords
air bag
bulge
airbag apparatus
passenger
base fabric
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Expired - Fee Related
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CNB2004101031677A
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Chinese (zh)
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CN1799904A (en
Inventor
尾藤和彰
林量敏
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Toyoda Gosei Co Ltd
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Toyoda Gosei Co Ltd
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Priority to CNB2004101031677A priority Critical patent/CN100404323C/en
Publication of CN1799904A publication Critical patent/CN1799904A/en
Application granted granted Critical
Publication of CN100404323C publication Critical patent/CN100404323C/en
Expired - Fee Related legal-status Critical Current
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Abstract

The present invention relates to an air bag device which has the structure that when the air bag is expanded, the air bag folded and loaded in an outer case expands toward the rear of a vehicle by gas flowing from an air inlet opening. A through hole is arranged in the air bag which is composed of annular members around the through hole. A lower expansion part of the present invention is provided with the air inlet opening, and an upper expansion part is positioned above the lower expansion part and is connected with the front edge of the lower expansion part. A rear expansion part is connected with the rear of the lower expansion part. The through hole is closed when the air bag is expanded completely.

Description

Airbag apparatus
Present patent application is based on the Japanese patent application with following application number: 2003-196831,2003-323108, and 2003-323117,2003-323122 and 2003-323128, listed Japanese patent application is incorporated this paper by reference into.
Technical field
The present invention relates to a kind ofly to be contained on the instrument carrier panel, be used for the unfolded airbag apparatus of air bag in the enclosure.
Background technology
According to a kind of existing airbag apparatus of said structure, air bag has the through hole (for example seeing JP-A-6-344844) of left and right directions.
But this existing airbag apparatus constitutes: also not closed even the through hole air bag in the air bag is finished when expanding.That is, according to this existing air bag, because the through hole of left and right directions is positioned at centre, its effect of contraction to the passenger is disperseed in passenger's a side when therefore causing air bag to finish expansion.For example, according to this existing airbag apparatus, when head of passenger was run into the other position of the through hole central axis of the air bag of finishing expansion, air bag was recessed greatly to through hole on one side, be out of shape and dwindle the internal diameter of through hole.In addition, when head of passenger was run into position away from the through hole central axis, the recessed amount of air bag reduced.Therefore, according to this existing airbag apparatus, constraint passenger's function is subjected to the influence of passenger figure and attitude, thereby can't stablize the protection passenger.
By the way, protection passenger's airbag apparatus is contained in the instrument carrier panel in vehicle seat the place ahead.During vehicle collision, the air bag and the charging blower that are folded in the shell that constitutes airbag apparatus start.In addition, by the high pressure gas that generate are introduced air bag, air bag expands rapidly, launches to the passenger, thus constraint passenger's inertia motion.
JP-A-11-170955 discloses above-mentioned airbag apparatus.According to this airbag apparatus, reduce the rate of onset that air bag rearward launches with the capsula interna in the air bag.
According to the described airbag apparatus of JP-A-11-170955, the part of air bag need be pressed onto on instrument carrier panel or the Windshield with this capsula interna, and the position that airbag apparatus installs on the vehicle is restricted.
By the way, according to existing airbag apparatus, finish when expand launching at air bag, a bag shape air bag is conical, comprises the vertical passenger's side wall portion on passenger's one side and is the surrounding wall portion (for example seeing JP-A-2002-255004) that taper shape dwindles from the neighboring of passenger's one side wall portion to vehicle front.There was the gas inflow entrance as the horizontal opening face this front portion, surrounding wall portion bottom surface when this air bag was finished the expansion expansion, and the periphery of this gas inflow entrance is contained on the shell.
Behind folded airbag in advance, laterally folded air bag forms left and right sides gauffer and the vertical folding air bag forms the front and back gauffer, and is cased the air bag that folds then, when air bag is folding in advance, passenger's side wall portion top margin and gas inflow entrance are put down on the circumferential part bottom surface over against, passenger's side wall portion folding.
According to this airbag apparatus, when airbag inflation launches, when the expanding gas that flows into from gas inflow entrance is pushed air bag channel part on the instrument carrier panel open, the gauffer that forms during laterally folded and vertical folding air bag is opened, make airbag inflation, launch to rear view of vehicle, at this moment, since passenger's side wall portion top margin position and gas inflow entrance over against, therefore at the initialization phase of expanding gas than the first person who lives in exile in position, passenger's side wall portion base, the pressure of expanding gas upwards thrust with gas inflow entrance over against passenger's side wall portion top margin position, thereby make passenger's side wall portion hold up rapidly.
In addition, when upwards thrusting passenger's side wall portion top margin position, the gauffer that this position forms when also helping to open laterally folded and vertical folding air bag rapidly, therefore passenger's side wall portion can be opened up to such an extent that open very much when the expansion deployment balloon, thereby the periphery that can make passenger's side wall portion and gas inflow entrance is vertical and hold up rapidly, thereby air bag can be opened up to such an extent that open very much, makes pressure not over against the passenger.
But, although according to existing airbag apparatus, air bag is when expanding expansion, and passenger's side wall portion can move, become vertical wide to rear view of vehicle, but as instrument carrier panel is other the obstacle contour with instrument carrier panel arranged, still have room for improvement aspect the air bag collision obstacle of expansion preventing to finish.
By the way, according to existing airbag apparatus, when in the enclosure air bag of expansion unfolded, expanding gas from gas inflow entrance person who lives in exile air bag, push open behind the air bag channel part on the instrument carrier panel to rear view of vehicle expansion deployment balloon.In addition, according to existing airbag apparatus, the one side of folding air bag broadening passenger one side when the passenger stretches out also suppresses its kinematic velocity, makes that pressure was not over against passenger (for example seeing JP-A-2002-255004) when airbag inflation launched.
In addition, according to existing airbag apparatus, vertical during airbag deployment with gas inflow entrance, on this surperficial top of passenger's one side during at folded state and gas inflow entrance over against.Therefore, when airbag inflation launches, should launch in vertical direction on the surface on passenger's one side.But,, reducing should to still have room for improvement aspect the moving velocity on surface on passenger's one side according to existing airbag apparatus.
By the way, a kind of known airbag apparatus uses its place ahead of protected passenger (for example seeing JP-A-11-227553) of the bulge of support air bag.
According to this air bag, the bulge in the zone of protection head of passenger is subjected to this support that comprises the strut member of its place ahead upper gasbag (seeing JP-A-11-227553 Fig. 1).
But; according to this existing airbag apparatus; the bulge of protection head of passenger is subjected to the support of strut member; look strut member elastic performance, have or not strut member passenger chest and belly not to be subjected to supports support; passenger's chest and belly are subjected to the constraint of positioning performance excellent protection bulge; but problem is the constraint that head of passenger is not subjected to the head protection bulge.
Summary of the invention
An object of the present invention is to provide a kind of airbag apparatus, even the passenger figure is different with attitude, its air bag of finishing expansion also can be stablized the protection passenger.
Another object of the present invention provides a kind of airbag apparatus that degree of freedom is very big, can reduce airbag deployment initial velocity of installing on vehicle.
In addition, another object of the present invention provides a kind of airbag apparatus, its air bag that expand to launch can with wide passenger restraint on correct position, even by the instrument carrier panel obstacle contour with the instrument carrier panel end face arranged, can prevent that also air bag from meeting this obstacle.
In addition; another object of the present invention provides a kind of airbag apparatus; when airbag inflation launched, the surface of passenger's one side was the plane in vertical direction and further reduces its moving velocity with left and right directions expansion back when rear view of vehicle moves up and down, thereby accurately protects the passenger.
In addition, another object of the present invention provides a kind of airbag apparatus, and it can retrain head of passenger than passenger's chest and belly better with good positioning performance.
According to first aspect present invention, airbag apparatus comprises folding air bag in the enclosure, and wherein, this air bag has circumferential body portion, and this main part comprises outside cloth sheet and inner cloth sheet; Through hole is opened in the airbag deployment process, and inner cloth sheet partly contacts with each other when air bag is finished expansion then, thereby makes this through hole closed substantially.
According to second aspect present invention, air bag is characterised in that, passenger the place ahead air bag constitutes: expanding gas flows into, makes folding air bag in the enclosure launch to rear view of vehicle during the expansion deployment balloon from gas inflow entrance, the a plurality of bulges that further comprise this airbag apparatus work expansion point, wherein, these bulges comprise: the following bulge of gas inflow entrance is arranged, and the gas inflow entrance periphery of this time bulge is contained on the shell; On the anterior bonded assembly of following bulge top margin up and down bulges bulge and with the back-connected after expansion portion of the rear portion of following bulge and last bulge, make this through hole penetrate on the airbag apparatus left and right directions.
According to airbag apparatus of the present invention, the through hole of air bag penetrates on left and right directions, closure when through hole is finished expansion at air bag.Therefore, prevent that air bag through hole central axis position is more recessed than position around it, the recessed amount of air bag keeps identical everywhere on passenger's one side surface when the passenger runs into air bag.Therefore, no matter which part that the passenger runs into passenger's one side surface of the air bag of finishing expansion can both be stablized the protection passenger.
Therefore, according to airbag apparatus of the present invention,, finish the air bag of expansion and also can stablize the protection passenger even passenger's figure is different with attitude.
In addition, according to airbag apparatus of the present invention, therefore air bag is made of the annular element of the through hole that penetrates about having, and does not directly flow but current downflow and deployment balloon on bladder shape to occupant orientation from gas inflow entrance person who lives in exile's expanding gas in starting stage that airbag inflation launches.Therefore air bag one side expansion broadening on above-below direction moves backward on one side rather than firmly stretches out backward.Therefore speed that passenger's one side surface moves to the passenger can be suppressed and pressure is not concentrated and acted on the passenger, thereby proal passenger can be accurately protected.
In addition, the airbag apparatus of said structure preferably constitutes: the expanding gas that handlebar flows into from gas inflow entrance in the air bag is guided the drainage unit on both sides up and down into.
When airbag apparatus when as above structure is done, into both sides are up and down guided the expanding gas that flows into from gas inflow entrance in the drainage unit.Therefore, air bag can launch widelyer on above-below direction and not exert oneself projection backward.
In addition, the airbag apparatus of said structure preferably constitutes: the expanding gas that flows into from gas inflow entrance downwards than to the upper reaches many.
As airbag apparatus as above structure do, when airbag inflation launched, the following bulge of air bag launched soon than last bulge; when therefore airbag inflation launches; even passenger's belly is near air bag, air bag also can launch rapidly between car body one upper lateral part spare and passenger, thereby can accurately protect the passenger.
According to third aspect present invention; this airbag apparatus is made of the airbag apparatus that is contained on the instrument carrier panel; be the protection passenger; the signal enabling that charging blower sends from acceleration pick-up during according to vehicle collision; with the gas that generates from the Windshield of instrument carrier panel top to the after expansion deployment balloon; the a plurality of bulges that expand when further comprising airbag apparatus work; wherein; air bag is finished and is expanded when launching; these bulges comprise the periphery cloth sheet relative with interior all cloth sheets on interior all cloth sheets and the air bag outer peripheral face on the through hole inner peripheral surface, make through hole penetrate on the above-below direction of airbag apparatus.
Therefore the gas from charging blower inflow air bag flows to the cylindrical shape bulge.In addition, air bag i.e. sequential expansion on the left and right vehicle wheel direction of cylindrical shape bulge along the circumferential direction.At this moment, because through hole is positioned at the air bag inboard, so air bag can expansion greatly on left and right directions, therefore development rate decline downwards.In addition, after air bag is finished expansion, through hole closure, but so active constraint passenger.In addition, because instrument carrier panel and so on is irrelevant with the reduction of development rate, the degree of freedom that therefore is assembled on the vehicle improves.
The gas that cylindrical shape bulge inside has deflector to make at inflator gas spout position to spray into is to the left and right directions deflection of airbag apparatus.
Therefore, the gas deflection device makes the gas deflection to the left and right that sprays into from the inflator gas spout, thus further expansion to the left and right of air bag.Therefore further development rate.
The swell increment of top width limited part confined expansion portion on vehicle-width direction arranged at cylindrical shape bulge top.
Therefore, air bag is finished top width limited part restriction cylindrical shape bulge top width when expanding, and therefore further firmly retrains the passenger.
The bottom width limited part of the swell increment of restricted bulge on vehicle-width direction in the air bag after expansion portion.
Therefore, air bag is finished bottom width limited part restriction cylindrical shape bulge bottom width when expanding, and therefore further firmly retrains the passenger.
The tension force of the outside cloth sheet of warp tension ratio of the inside cloth sheet of formation through hole is little.
A little less than the tension force of inner cloth sheet, therefore the area of contact of each inside portion sheet relative to each other is big, and when the constraint passenger, the shape that prevents swelling gasbag is because of the big large deformation of the slip between the inboard cloth sheet, thereby can further improve constraint passenger's performance.
Through hole is positioned on the instrument carrier panel back.
According to fourth aspect present invention, air bag constitutes: the gas inflow entrance that has its periphery to be contained on the shell on the periphery cloth sheet front flows in the air bag for expanding gas, and during airbag inflation, the lower openings of through hole moves down before air bag is finished expansion.
According to airbag apparatus of the present invention, during airbag inflation, the through hole lower openings broadens, and the following peripheral of through hole is moved the expansion of finishing air bag from top to bottom, even therefore there is the height obstacle identical with the instrument carrier panel end face on the instrument carrier panel side, obstacle also can insert in the following through hole of air bag.That is prevent when, air bag is finished and expanded that obstacle from firmly being pressed to under-vehicle or rear.
In addition, even without obstacle, air bag expanding gas when gas inflow entrance flows into air bag ringwise, therefore expanding gas flows between periphery cloth sheet and interior all cloth sheets to the left and right sides, therefore passenger's side wall portion broadening on left and right directions of periphery cloth sheet moves to rear view of vehicle, therefore even leaning against the seated passenger of backrest at seat is that the correct passenger of sitting posture moves forward, the position that passenger's one side width of air bag broadens on left and right directions also can accurately retrain the passenger and pressure do not concentrated and acted on one's body the passenger.
Therefore, according to airbag apparatus of the present invention, the air bag that expand to launch can constrain in the passenger on wide the tram, even the other obstacle that has up to the instrument carrier panel end face of instrument carrier panel, obstacle also can insert in the through hole and prevent that air bag and obstacle from bumping.
In this case, folded airbag in advance when air bag is in non-expansion state, make the inflection that makes progress of the following peripheral of through hole, gas inflow entrance is positioned on its bottom surface one side, periphery cloth sheet is positioned at the gas inflow entrance top, interior all cloth sheets shakeout on the airbag apparatus left and right directions after inserting therebetween symmetrically, form left and right sides gauffer through folding in advance air bag and make with the gas inflow entrance to be that the fore-and-aft direction width at center reduces with laterally folded step is folding then, gauffer makes the left and right directions width reduce before and after forming with the vertical folding step then, thereby can pack the air bag that is folded in the shell into.
As folded airbag like this, airbag inflation, expanding gas G did not flow to through hole circumference base when through hole was opened, the situation that the via bottoms opening expands during therefore with the not inflection of through hole circumference base relatively, the air bag internal diameter can be opened very greatly, insert in the through hole thereby be convenient to obstacle, air bag can further prevent collision obstacle when finishing expansion and obstacle is pushed to under-vehicle or rear.In addition, back lower place revers turn part expansion is heaved at so folding air bag position above revers turn part, makes the circumference base of through hole move from the top down, thus convenient finishing of expanding.
In addition, when airbag inflation,, through hole circumference base finishes expansion for being moved from top to bottom, use drainage portion as the drainage unit of restriction air-flow G to make expanding gas G flow to the top more or use the method for folding except that above-mentioned revers turn part to make the top margin of passenger's side wall portion fold into the position relative in advance with gas inflow entrance, thereby above the top margin of passenger's side wall portion is positioned at rapidly when airbag inflation and finish expansion.
According to fifth aspect present invention, air bag constitutes: have on the periphery cloth sheet front its periphery install on the shell, for the gas inflow entrance of expanding gas person who lives in exile air bag; The guiding mobile unit on the protection passenger's of periphery cloth sheet passenger side surface during by airbag inflation on the left and right, up and down direction of airbag apparatus broadening, the vertical plane surface that moves to rear view of vehicle constitute.
According to airbag apparatus of the present invention, air bag is made of the annular element that the through hole that penetrates is up and down arranged.That is, when airbag inflation launched, the expanding gas that flows into from gas inflow entrance did not directly flow to occupant orientation but flows and deployment balloon about with bladder shape.Therefore air bag broadens greatly rather than puts forth effort on left and right directions and stretches out backward.Can suppress the speed that passenger's one side surface rearward moves when therefore airbag inflation launches.
In addition, according to airbag apparatus of the present invention, air bag comprises that the passenger side surface was the vertical plane surface that broadens up and down that moves to rear view of vehicle when guiding mobile unit in passenger side surface made airbag inflation.That is, according to airbag apparatus of the present invention, when air bag begins to expand not only at the broadening that also on above-below direction, expands greatly on the left and right directions.Therefore, when airbag inflation launched, the passenger side surface was presented down the plane of left and right sides broadening and is moved to rear view of vehicle.Even proal passenger is met on the passenger side surface, also the passenger can be protected accurately and pressure is not concentrated and acted on one's body the passenger.
Therefore, according to airbag apparatus of the present invention, when airbag inflation launched, the passenger side surface was presented down the plane of left and right sides broadening and is moved to rear view of vehicle, thereby can further suppress moving velocity, accurately protects the passenger.
In addition, although according to airbag apparatus of the present invention, penetrated through via holes is up and down arranged in the air bag, closure when through hole is finished expansion at air bag.Therefore can guarantee certain interior pressure, thereby the air bag of finishing expansion can be stablized the protection passenger.
In a kind of structure of air bag, the guiding mobile unit is formed by airbag fold, air bag is formed with vertical folding is folding by folding and laterally folded thereafter in advance, on the bottom surface of Zhe Die air bag gas inflow entrance is arranged in advance, this moment, air bag was unexpansive, in all cloth sheets be inserted in gas inflow entrance top, periphery cloth sheet upper back covers thereon that left and right symmetrically shakeouts, the top on the passenger side surface of periphery cloth sheet and gas inflow entrance over against.
When air bag was above-mentioned structure, when air bag began to expand, the pressure of the expanding gas that flows into from gas inflow entrance pushed away earlier the top ends on periphery cloth sheet passenger side surface through interior all cloth sheets.In addition since on push away the top ends on passenger side surface, therefore laterally folded and vertical folding gauffer is opened rapidly, air bag launches up and down.
In addition, in a kind of structure of air bag, the guiding mobile unit is made of the drainage unit of the expanding gas that can drainage in the air bag flows into from gas inflow entrance, and the drainage unit is positioned at the gas inflow entrance institute rear forwardly of air bag, the energy drainage, guides expanding gas up and down.
When air bag is above-mentioned structure, current downflow is gone up in the guiding that is positioned at the drainage unit at rear, rear portion after the expanding gas that flows into from gas inflow entrance flows to the left and right with bladder shape, therefore the bulge of air bag broadening up and down, passenger side surface be broadening up and down further.
According to sixth aspect present invention; airbag apparatus is characterised in that the airbag apparatus that is contained in after folding in the instrument carrier panel of passenger-seat the place ahead in the shell, can stretches out to rear view of vehicle from shell when expanding gas flows into wherein; wherein; during airbag inflation on it bulge can protect head of passenger; bulge can be protected passenger's chest belly under it; air bag is finished when expanding, and the passenger who runs into air bag is subjected to the support of vehicle front strut member, and following bulge is littler than the amount of movement of last bulge back to the amount of movement of vehicle front.
In this air bag of the present invention; the following bulge of protection passenger chest belly of finishing the air bag of expansion is subjected to the support of strut member; amount of movement to vehicle front when meeting the passenger is littler than the amount of movement of last bulge back; on the contrary; amount of movement to vehicle front when the passenger is met in this back is bigger than the amount of movement of following bulge, therefore goes up bulge and can softly retrain head of passenger.
Certainly, thus since down the area of bulge back than the big big chest belly of ratio head that can protect the passenger of last bulge, even so little whole chest belly of passenger of also accurately protecting of the amount of moving forward.
Therefore, according to the airbag apparatus of this embodiment, the buffer action of the airbag restraint head of passenger of the expansion of expanding is stronger than constraint passenger's chest belly.
In addition, preferably, the support pouches that strut member is heaved by expanded gas stream constitutes.
According to this structure, bulge under can supporting when expanding gas flows into wherein as the support pouches of strut member, expanding gas can the expanding gas of bulge flows into support pouches with flowing to up and down, compares with the situation that unexpansive strut bar and so on is used as strut member, is convenient to be provided with strut member.
In addition, support pouches is communicated with following bulge, therefore can shared inflow the expanding gas of bulge up and down, charging blower that therefore can shared supply gas, thus prevent that this airbag apparatus component count from increasing.
In addition, preferably, part ringwise when air bag is finished and expanded in such cases, the through hole that penetrates is up and down wherein arranged, comprise preceding bulge, after expansion portion, left bulge and right bulge, base fabric when air bag is finished expansion around the through hole is heaved, thereby through hole closure, wherein, there is its periphery to install to the gas inflow entrance that flows into air bag on the shell, for expanding gas on the preceding bulge, bulge constitutes under bulge and its below by going up above it in after expansion portion, and support pouches is made of preceding bulge and left and right sides bulge.
According to this air bag, as long as make the air bag that annular air-pocket promptly can be made into the bulge up and down that comprises support pouches, so it is easy to make.
Description of drawings
Fig. 1 is the cutaway view of airbag apparatus first embodiment of the present invention on the vehicle fore-and-aft direction;
Fig. 2 is the amplification view of airbag apparatus first embodiment of the present invention on the vehicle fore-and-aft direction;
Fig. 3 is the block diagram of the whole swelling gasbag that uses among first embodiment;
Fig. 4 is the longitudinal sectional view of whole swelling gasbag on the vehicle fore-and-aft direction that uses among first embodiment;
Fig. 5 is the transverse sectional view of whole swelling gasbag on the vehicle fore-and-aft direction of using among first embodiment;
Fig. 6 is the longitudinal sectional view of whole swelling gasbag on fore-and-aft direction that uses among first embodiment;
Fig. 7 is the longitudinal sectional view of drainage portion on fore-and-aft direction of the air bag that uses among first embodiment;
Fig. 8 is the planar view of each parts of the air bag of formation first embodiment use;
Fig. 9 A-9B illustrates the folding step of the air bag of first embodiment use;
Figure 10 A-10C illustrates the folding step of air bag after Fig. 9 step that first embodiment uses;
Figure 11 illustrates the service condition of the airbag apparatus of first embodiment that looks from vehicle one side;
Cutaway view when Figure 12 expands for another embodiment of air bag of the present invention is whole on the vehicle fore-and-aft direction;
Block diagram when Figure 13 expands for air bag second embodiment of the present invention finishes;
Lateral plan when Figure 14 expands for air bag second embodiment of the present invention finishes;
Birds-eye view when Figure 15 expands for air bag second embodiment of the present invention finishes;
Cutaway view when Figure 16 expands for air bag second embodiment of the present invention finishes;
Figure 17 is for to cut open the cutaway view of getting along Figure 15 XVII-XVII line;
Birds-eye view when Figure 18 begins to expand for air bag second embodiment of the present invention;
Figure 19 is for to cut open the cutaway view of getting along Figure 18 XIX-XIX line;
Figure 20 is the expansion drawing of each cloth sheet of air bag second embodiment of the present invention;
Figure 21 is the expansion drawing of each cloth sheet of air bag the 3rd embodiment of the present invention;
Birds-eye view when Figure 22 begins to expand for the air bag that uses each cloth sheet shown in Figure 21;
Figure 23 is the amplification view of Figure 22 charging blower and portion from beginning to end;
Figure 24 is another routine part sectional view of the present invention;
Figure 25 is another routine block diagram of airbag apparatus of the present invention;
Figure 26 is another routine cutaway view of airbag apparatus of the present invention;
Longitudinal sectional view when Figure 27 is assemblied on the vehicle for airbag apparatus the 4th embodiment of the present invention;
Block diagram when Figure 28 A expands for the air bag of airbag apparatus the 4th embodiment use of the present invention is whole; Transverse sectional view when Figure 28 B expands for air bag the 4th embodiment of the present invention is whole;
Figure 29 A and 29B illustrate air bag the 4th embodiment of the present invention folding step in advance; The view of Figure 29 A for looking from gas inflow entrance one side of air bag; The view of Figure 29 B for looking from passenger's side wall portion one side;
Figure 30 illustrates air bag of the present invention the 4th embodiment that is folded in advance;
Figure 31 A-31C illustrates laterally folded step and the vertical folding step of air bag the 4th embodiment of the present invention;
Figure 32 illustrates the service condition of airbag apparatus the 4th embodiment of the present invention;
Figure 33 illustrates the service condition of air bag the 4th embodiment of the present invention behind Figure 32;
Cutaway view when Figure 34 begins to expand for air bag the 4th embodiment of the present invention;
Figure 35 illustrates the service condition of air bag of the present invention the 4th embodiment drainage portion;
Block diagram when Figure 36 expands for the air bag of fifth embodiment of the invention use is whole;
Cutaway view when Figure 37 expands for the air bag of fifth embodiment of the invention use is whole on fore-and-aft direction;
The cutaway view of air bag drainage portion on above-below direction that Figure 38 uses for fifth embodiment of the invention;
Figure 39 is this drainage portion cutaway view on above-below direction that cuts open the air bag of the fifth embodiment of the invention use of getting along XXXIX-XXXIX line among Figure 38;
Figure 40 is the planar view of each parts of the air bag of formation fifth embodiment of the invention use;
Figure 41 illustrates the air bag through folding in advance fifth embodiment of the invention use of looking from gas inflow entrance one side;
Figure 42 illustrates the air bag through folding in advance fifth embodiment of the invention use of looking from passenger's one side;
Figure 43 A and 43B illustrate the folding step of air bag after folding in advance that fifth embodiment of the invention is used;
Figure 44 A and 44C illustrate the folding step of air bag behind Figure 43 A and 43B that fifth embodiment of the invention is used;
Figure 45 is the service condition of airbag apparatus of the present invention the 5th embodiment that looks from rear view of vehicle;
Figure 46 is the service condition of airbag apparatus of the present invention the 5th embodiment that looks from vehicle one side;
Block diagram when Figure 47 expands for air bag the 5th embodiment of the present invention is whole;
According to another embodiment of the present invention
Figure 48 is the planar view of each parts of the air bag of formation this embodiment of the invention use;
Figure 49 is the service condition of this embodiment of airbag apparatus of the present invention of looking from vehicle one side;
The longitudinal sectional view of Figure 50 when to be that this embodiment of air bag is whole expand;
Figure 51 A and 51B for look from gas inflow entrance one side and passenger's one side through folding in advance this embodiment of air bag;
Figure 52 illustrates the laterally folded step of this embodiment of air bag;
Figure 53 A-53C illustrates shown in Figure 52 laterally folded step and vertical folding step after the step; And
Figure 54 illustrates the service condition of the airbag apparatus at this embodiment seat.
The specific embodiment
Below in conjunction with the description of drawings various embodiments of the present invention.
(first embodiment)
The airbag apparatus M that uses according to the passenger-seat of first embodiment of the invention at first is described.As illustrated in fig. 1 and 2, top mount type airbag apparatus 1 is contained in the inside of the top surface side on instrument carrier panel 1 surface.This airbag apparatus M comprises the shell 54 of folded airbag 10, the charging blower 52 to air bag 10 supply expanding gas, interior dress and supporting air bag 10 and charging blower 52, air bag 10 is connected in the retainer 50 on the shell 54 and cover the airbag cover 61 of folded airbag 10.
As illustrated in fig. 1 and 2, airbag cover 61 is made one with instrument carrier panel 1 in this embodiment.Instrument carrier panel 1 comprises bottom that comprises polypropylene and so on hard synthetic resin 2 and the cap rock 3 that is positioned on the back, and this cap rock comprises the froth bed and the skin covering of the surface of polyurathamc of covering bottom 2 outside faces one side and so on.In addition, the part of airbag cover 61 has soft 4 that the soft synthetic resin by olefin type thermoplastic elastic body and so on that replaces bottom 2 is made.Airbag cover 61 includes two air bag channel part 62F and 62B of the thinner wall section 64 of easily breaking on every side.The portion 64 of easily breaking looks from instrument carrier panel 1 top and is H shape, and it constitutes: two air bag channel part 62F and 62B are opened to both sides on former and later two directions by the articulated section 63 that its front-end and back-end form.
In addition, the part of airbag cover 61 has the connecting wall portion 65 that is essentially the square shape that reaches the bottom surface from behind, surrounds air bag channel part 62F and 62B.In the connecting wall 65 on the fore-and-aft direction relative to each other the 65a of wall portion and the desired location of 65b on have a plurality of lockholes 66 to run through.Be inserted with the latch hook 60 that on shell 54, forms in the lockhole 66, thereby lock connecting wall portions 65 with latch hook 60.60 lockings of each latch hook of connecting wall portion 65 usefulness, in order to ensure being connected of connecting wall portion 65 and shell 54, air bag 10 is pushed air bag channel part 62F and 62B open when air bag 10 expansions, can break smoothly with the easy portion 64 of breaking.
In addition, in this embodiment, be arranged on for soft 4 the air bag channel part 62F of airbag cover 61 and 62B back surpass on the forward and backward part of connecting wall portion 65 and near instrument carrier panel 1 back the articulated section 63 of air bag channel part 62F and 62B above on the front and rear part of connecting wall portion 65.
As illustrated in fig. 1 and 2, shell 54 is the shape of being made by metal sheet that is essentially cuboid, there is rectangular aperture 54a on its top, comprises long square plate shape bottom wall portion 55 and is stretched over the side wall portion 59 of airbag cover 61 end faces that are essentially square from bottom wall portion 55 neighborings.Bottom wall portion 55 is the rectangular plate of long limit on left and right directions, and there is the jack 56 that is essentially circular in its central authorities, and the top of charging blower 52 can be inserted to the top side from airbag cover 61 bottom sides.Has assembly opening 57 on the periphery of the jack 56 of bottom wall portion 55 for the bolt 50b insertion of retainer 50.In addition, be fixed with on the bottom wall portion 55 left and right sides bottom surfaces shell 54 is connected to carriage 58 on the car body 6.The nut 58a that each carriage 58 usefulness is tightened on the bolt 7 fixes.Car body 6 has the carriage 6b that stretches out from reinforcement 6a, and bolt 7 screws nut 58a after passing plate 6c, thereby installs carriage 6b.Thereby screwing nut 58a on each bolt 7 just can be fixedly mounted on shell 54 airbag apparatus M on the car body 6.
In addition, the convex ridge 55a to upper process around jack 56 is arranged near jack 56 peripheries of bottom wall portion 55.Convex ridge 55a is positioned on the lower area of retainer 50 bottom 50a, is used for improving the leak tightness of bottom wall portion 55 and the periphery 16 of the gas inflow entrance 17 of air bag 10.
In addition, on the vehicle fore-and-aft direction, have on side wall portion 59 tops of shell 54 a plurality of to the outside of shell 54 and the latch hook 60 of bottom side bending.As mentioned above, locking connecting wall 65 in the lockhole 66 of the connecting wall 65 of each latch hook 60 insertion airbag cover 61.
Dish-type charging blower 52 has and is essentially columnar main part 52a, and many air supply opening 52b are arranged on its top outer peripheral face.Handlebar charging blower 52 is contained in the flange part 52c on the shell 54 on the outer peripheral face of main part 52a.Flange part 52c is the shape of the side's of the being essentially cast (square plate shape) that stretches out from main part 52a outer peripheral face, has assembly opening 52d to run through on its four jiaos.The position of assembly opening 52d is corresponding with the assembly opening 57 of shell 54 bottom wall portion 55, and its internal diameter size is identical with assembly opening 57.
Retainer 50 usefulness metal sheets draw and to form, and what comprise bottom 50a that the jack of shape and shell 54 56 essentially identical holes are arranged on it and be stretched over airbag cover 61 1 side top margins from the neighboring of bottom 50a is the 50c of guiding wall portion of cuboid substantially.50a neighboring, bottom rectangular basically (being essentially square) is fixed with the bolt 50b that stretches out downwards on four jiaos.Behind the assembly opening 52d of the assembly opening 57 of the assembly opening 18 of each bolt 50b insertion air bag 10, the bottom wall portion 55 of shell 54 and the flange part 52 of charging blower 52, screw nut 51, thereby retainer 50 is connected air bag 10 and charging blower 52 on the bottom wall portion 55 of shell 54 in air bag 10.Promptly, when on each bolt 50b, screwing nut 51, the periphery 16 of the gas inflow entrance 17 of air bag 10 is pressed to bottom wall portion 55 by bottom 50a and air bag 10 is connected on the bottom wall portion 55, and the flange part 52c of charging blower 52 is pressed to the periphery of jack 56 and charging blower 52 is connected on the bottom wall portion 55.In addition, the front end of the 50c of guiding wall portion of retainer 50 stretches upwards with charging blower 52 main part 52a end faces contour.The 50c of guiding wall portion is stretched over the top margin of airbag cover 61 1 sides from the outward flange of the bottom 50a that is essentially rectangle.
Shown in Fig. 3-7, air bag 10 is an annular element, and the through hole 11 that runs through along left and right directions is basically arranged on it, finishes expansion when through hole 11 closures.In this embodiment, air bag 10 is its axially shape that is essentially triangular prism on left and right directions when finishing expansion.According to air bag 10, the circumferential body portion 12 of heaving of expanding comprises through hole 11 following bulge 13, last bulge 14 and after expansion portion 15 on every side.On the front end 13c of the bottom surface 13b that descends bulge 13, gas inflow entrance 17 is arranged.Last bulge 14 is positioned at bulge 13 tops down, is connected with the described front portion of bulge down.After expansion portion 15 is connected with the rear portion of following bulge 13 and the rear portion of last bulge 14.In addition, in this embodiment, when air bag 10 launched to expand, the back 15b of after expansion portion 15 constituted the passenger side surface 30 of passenger's one side.
In addition, circumferential body portion 12 comprises and finishes when expanding periphery base fabric 26 (see figure 7)s relative with interior all base fabric 21 at air bag on the side face outside being arranged on interior all base fabrics 21 on the side face within the through hole 11 and being arranged on air bag 10.In addition, base fabric 21 and 26 is softly weaved cotton cloth and is hereinafter described strengthened cloth and constitute by what comprise poly-ester fibres, polyamide fibre and so on, and is the uncoated cloth that is not coated with silicone and so on paint on a kind of its surface.
As shown in Figure 8, interior all base fabrics 21 comprise following portion 22 as the following end face 13a of bulge 13, as last slice portion 23 of the bottom surface 14b of last bulge 14 with as the rear panel portion 24 of face 15a before the after expansion portion 15.In addition, in this embodiment, the global shape of interior all base fabrics 21 is connected with the front 23a of last slice portion 23 by the front 22a of following sheet portion 22 and the back 23b of last slice portion 23 and the top margin 24a of rear panel portion 24 are formed by connecting.
Periphery base fabric 26 comprises following portion 27 as the following bottom surface 13b of bulge 13, as last slice portion 28 of the end face 14a of last bulge 14 with as the rear panel portion 29 of face 15b after the after expansion portion 15.In addition, the global shape of periphery base fabric 26 is connected with the front 28a of last slice portion 28 by the front 27a of following sheet portion 27 and the back 28b of last slice portion 28 and the top margin 29a of rear panel portion 29 are formed by connecting.In addition, the rear panel portion 29 of periphery base fabric 26 constitutes passenger side surface 30.
In addition, it is circular gas inflow entrance 17 that near the part of the periphery base fabric 26 of the air bag 10 front 27a of following sheet portion 27 has the opening that flows into for expanding gas G, and its periphery 16 is connected on the shell 54.Be connected to a plurality of assembly openings 18 on the bottom wall portion 55 of shell 54 at handlebar gas inflow entrance periphery 16 on the periphery 16 of gas inflow entrance 17.On the inner peripheral surface of air bag 10, the periphery 16 of gas inflow entrance and two strengthen that cloth 31 and 32 is sewed together and strengthen covering on cloth 32 end faces do not stitch thereon be used to protect the described reinforcement cloth 33 of making portion.In addition, have in the following portion 27 of periphery base fabric 26 line of centers the right and left by about the basic deflation hole 19 that is symmetrically distributed, be used to discharge unnecessary expanding gas G.
In addition, according to this embodiment, the adjusting portion 35 as air volume regulating device is arranged on the last bulge 14 of air bag 10.Adjusting portion 35 basic left and right symmetrically near the position of the end 14c before the last bulge 14 be distributed in line of centers about on two positions.Make with periphery base fabric 26, connect into ellipse and form each adjusting portion 35 accompanying interior all base fabrics 21 of strengthening cloth 36 and 37 therebetween, and each adjusting portion 35 comprise in all base fabrics 21 and the connecting portion 35a of periphery base fabric 26 and basic around connecting portion 35a be Frusto-conical part 21a and 26a (main part 36b) (seeing Fig. 7 and Fig. 8).Air bag 10 expands when launching, when expanding gas G flows into circumferential body portion 12, periphery base fabric 26 is pulled to outer circumferential side, interior all base fabrics 21 are pulled to inner with close through hole 11, therefore, at adjusting portion 35 places, in the periphery 21a and 26a (base portion 35b) of pulling connecting portion 35a, connecting portion 35a is positioned at the middle part of the above-below direction of bulge 14 on periphery base fabric 26 and interior all base fabrics 21.That is, adjusting portion 35 is by forming (see figure 7) in the zone of drawing back bulge 14 on the above-below direction.Therefore, as shown in Figure 7, air bag 10 expands when launching, by adjusting portion 35, hold before the last bulge 14 near the 14c open area than near holding 13c before the following bulge 13 to open area little, therefore upward the tolerance of bulge 14 is many than inflow for the expanding gas G that flows into from gas inflow entrance 17 tolerance that flows into bulge 13 down.
The following describes the making of air bag 10.In this embodiment, air bag 10 (circumferential body portion 12) is made with the suture 39 of poly-ester fibres and so on and is formed.The base 29b of back 27b that is sewed with sheet portion 27 under the periphery base fabric 26 of strengthening cloth 31 and 32 in advance and rear panel portion 29 is sewn into annular with the suture 39 of poly-ester fibres and so on.At this moment, strengthening cloth 31 and 32 is exposed on the outer peripheral face of periphery base fabric 26.In addition, the back 22b of following sheet portion 22 and the base 24b of rear panel portion 24 are sewn into annular, expose outside on the looping main body 12 in-to-in surfaces of interior all base fabrics 21.In addition, can and strengthen at base fabric 26 forming gas inflow entrance 17 and assembly opening 18 respectively on the cloth 31,32 and 33, or after base fabric 26 and reinforcement cloth 31 and 32 being sewed together and loading onto reinforcement cloth 33, get out gas inflow entrance 17 and assembly opening 18 more together.
Then, the left side 22c of following sheet portion 22 and following sheet portion 27 and 27c and following sheet portion 22 and the right 22d and the 27d of following sheet portion 27 are sewed together respectively; And the right 24d and the 29d of the left side 24c of rear panel portion 24 and 29 and 29c and rear panel portion 24 and 29 be sewed together respectively.Then, about upset base fabric 21 and 26 makes the linear slit of the portion of making not expose on the outer peripheral face of air bag 10.In addition, when inserting reinforcement cloth 35 and 36, make base fabric 21 and 26, form drainage portion 34,34.Then, the right 23d and the 28d of the left side 23c of last slice portion 23 and 28 and 28c and last slice portion 23 and 28 are sewed together respectively, can form the circumferential body 12 (air bag 10) of this embodiment.
The following describes the air bag of as above making 10 is assembled on the vehicle, at first folded airbag 10, make that the bolt 50b on the retainer 50 in the air bag 10 passes each assembly opening 18, in addition, folding air bag 10 usefulness infantees 47 (see figure 2)s of can breaking encase, and prevent that air bag 10 from scattering.When folded airbag 10, through folding step, laterally folded step and vertical folding step in advance and air bag 10 is folded.
In folding step in advance, form shown in Fig. 9 A folded airbag 41 in advance.When folding in advance, air bag 10 (circumferential body portion 12) is in non-expansion state, gas inflow entrance 17 is positioned on the bottom surface, the interior all base fabrics 21 that are inserted in gas inflow entrance 17 tops align with near near the top margin 29a (the top 30a on passenger side surface 30) of the rear panel portion 29 of periphery base fabric 26, and left and right symmetrically shakeouts basically.In this embodiment, substantially, folded airbag 41 afterwards aligns mutually the front end of the top of after expansion portion 15 (the top margin 29a of rear panel portion 29) and following bulge 13 (the front 27a of following sheet portion 27), with formation left and right sides gauffer C1 on the part on expansion top 14, thereby form folded airbag 41 in advance.
In addition, behind folding step in advance, shown in Fig. 9 B and 10, folding with laterally folded step through folding in advance air bag 41, form left and right sides gauffer CH, make with gas inflow entrance 17 to be that the fore-and-aft direction width at center reduces gauffer CV before and after forming with the vertical folding step then, make the left and right directions width reduce, thereby be folded into the air bag that can be loaded in the shell 54.In this embodiment, when carrying out laterally folded step, gas inflow entrance 17 aft section 42 roll fold are arrived gas inflow entrance 17 top positions, make back 41a near gas inflow entrance 17, then, become the folding position, gas inflow entrance 17 the place ahead 43 of wind-box shape, cover back guide portion 42, make front 41b near gas inflow entrance.Carry out the vertical folding step in addition again,, make left and right limit 41c and 41d near gas inflow entrance 17 for the part 44 of this left and right limit 41c and 41d side folds into gas inflow entrance 17 tops with 45 one-tenth wind-box shapes.
In addition, with after the vertical folding step is finished folding of air bag 10 as mentioned above, encase folding air bag 10 with the infantees 4 that can break, thereby prevent that air bag 10 from scattering.
In addition, from above bolt 50b inserted assembly opening 57 in, folding air bag 10 is installed to the top of shell 54 bottom wall portion 55 from opening 54a.Then, the top of charging blower 52 main part 52a is inserted the bottom 50a of jack 56, gas inflow entrance 17 and retainer 50 from the below, and the assembly opening 52d of the flange part 52c of the bolt 50b insertion charging blower 52 that stretches out downwards from bottom wall portion 55.Then, the nut 51 on the bolt 50b that will stretch out at the flange part 52c from charging blower 52 is fastening, can folding air bag 10 and charging blower 52 be connected on shell 54 bottom wall portion 55.
Then, the side wall portion 59 of shell 54 is inserted in the connecting wall portion 65 of the airbag cover 61 in the instrument carrier panel 1 that is contained on the vehicle, each latch hook 60 of shell 54 inserts in the lockhole 66 of connecting wall portion 65, and latch hook 60 is locked in the connecting wall portion 65.In addition, on each carriage 58, bolt on 7 with nut 58a, can be contained in airbag apparatus M on the vehicle.
In addition, when installing to airbag apparatus M on the car two, can fuse air bag 10 and the shell 54 that charging blower 52 is housed earlier, and then when being contained in instrument carrier panel 1 on the vehicle, airbag apparatus M is fixedly connected on the car body 6 with bolt 7.
After airbag apparatus M installed on the vehicle, when the air supply opening 52b of charging blower 52 supply expanding gas G, air bag 10 expanded, and infantees 47 breaks, and the portion of easily breaking 64 of airbag cover 61 breaks, and air bag channel part 62F and 62B open shown in long and two-short dash line among Fig. 1 and 2.In addition, air bag 10 is opened the opening 67 that is generated from the air bag channel part 62f of airbag cover 61 and 62b and is stretched out significantly, and to finish expansion, unnecessary expanding gas G discharges from deflation hole 19.In addition, label W represents Windshield among Fig. 1 and 11.
In addition, although the through hole 11 that runs through substantially on left and right directions is arranged among the airbag apparatus M of this embodiment, closure when through hole 11 is finished expansion at air bag 10.Therefore, prevent that through hole 11 central axis of air bag 10 are neighbouring much more recessed than position around it, the recessed amount of air bag 10 is identical everywhere basically on passenger side surface 30 when the passenger runs into air bag.Therefore, no matter the passenger runs into which position on the passenger side surface 30 of air bag 10, can both stablize the protection passenger.
Therefore, according to the airbag apparatus M of this embodiment,, finish the air bag of expansion and also can stablize the protection passenger even the passenger figure is different with attitude.
In addition, airbag apparatus M according to this embodiment, because air bag 10 is made of the annular element of the through hole 11 that runs through about having, therefore, when air bag 10 begins to expand expansion, the expanding gas G that flows into from gas inflow entrance 17 does not directly flow to occupant orientation, but according to air bag 10 current downflow and broadening (see figure 4) in shape.Therefore, as shown in figure 11, Yi Bian air bag 10 one side expansion broadening on above-below direction moves backward rather than puts forth effort to stretch out backward.Therefore,, can limit the speed that move to the passenger on passenger side surface 30, not apply partial pressure, thereby can accurately protect proal passenger to passenger side in the incipient stage that air bag 10 expands and launches.
In addition, in the airbag apparatus of this embodiment, use is positioned in the adjusting portion 35 in the zone of bulge 14 on the air bag 10, and it is more than the gas flow that flows into last bulge 14 to make gas flow that the expanding gas G that flows into from gas inflow entrance 17 flows into bulge 13 down.Therefore a large amount of gases flow into bulge 13 rear end 13d down.Therefore, when airbag inflation launched, the following bulge 13 of air bag 10 launched soon than last bulge 14; therefore air bag 10 expands when launching; even passenger's belly is near air bag 10, air bag 10 also can launch rapidly between instrument carrier panel 1 that constitutes car body and passenger, thereby can accurately protect the passenger.
In addition, as shown in figure 12, can use air bag 10A, wherein have, make expanding gas G on above-below direction, flow at the cylindrical drainage cloth 70 (drainage unit) of two ends 70a and 70b (two ends on the fore-and-aft direction) opening up and down.When using the air bag 10A of said structure, drainage cloth 70 is guided the expanding gas G that flows into the air bag 10A from gas inflow entrance 17 into both sides up and down.Therefore, expanding the incipient stage, air bag 10A further broadening and rearward outstanding far greatly on above-below direction.
In addition, although embodiment expresses air bag 10 and the 10A that adjusting portion 35 or drainage cloth 70 (drainage unit) are housed respectively, also adjusting portion and drainage cloth can be arranged simultaneously in same air bag certainly.In addition, the drainage unit is not limited to drainage cloth 70, but for example, and the also available frenulum in drainage unit connects into interior all base fabrics 21 and periphery base fabric 26 expanding gas that flows into air bag is guided into the shape on both sides up and down.
In addition, can be contained in airbag apparatus on the bearing circle in the place ahead, vehicle driver seat.Revise example as the air bag 10 that is contained on the bearing circle, the part 11b of the part 11a of bulge 13 under the formation of interior all base fabrics 21 and formation after expansion portion 15 thereof is made, connects into the basic shape of rectangle that is with suture 39.In this case, the air bag 10 of finishing expansion be substantially after expansion portion 15 big, down between bulges 13 and after expansion portion 15 tops apart from little, its axial flat triangular prism shape on this air bag left and right directions.When air bag 10 began to expand, described part 11b was the shape that flattens on above-below direction.Air bag 10 expands when launching, and expanding gas G does not directly flow to passenger side but goes up the current downflow broadening according to air bag 10 shapes (through hole 11).In addition, can limit after expansion portion 15 separate with following bulge 13 and stretch out to rear view of vehicle (passenger's one side) far, thereby further limit the speed of passenger side surface to occupant orientation.Therefore can stablize the protection chaufeur.
(second embodiment)
The following describes second embodiment of airbag apparatus of the present invention.
As shown in figure 14, to be arranged to its position on the floor 212 of vehicle 211 adjustable before and after can be on vehicle heading for the operator's seat 215 that is made of seat portion 213 and back-rest.There is instrument carrier panel 216 in operator's seat 215 the place aheads.Airbag apparatus 221 with air bag 223 is housed in the instrument carrier panel 216, its air bag 223 expand be deployed in instrument carrier panel 216 end faces, between the passenger on 217 inside faces of the Windshield above the instrument carrier panel 216 and the seat 215.
This airbag apparatus 221 comprises the shell 222 that is installed in the instrument carrier panel 216; Thereby be contained in the air bag 223 in the shell 222 foldedly and insert shell 222 bottoms, have the supply high pressure gas to give the charging blower 224 of the air nozzle 224a of air bag expansion deployment balloon 223.In addition, charging blower 224 is when detecting the signal enabling that acceleration pick-up (not shown) that vehicle 211 bumps sends, and high pressure gas are from the charging blower 224 inner air bag inside that flow into.Therefore, air bag 223 expands and launches, and protection is sitting in the passenger on the seat 215.
The following describes the structure of air bag 223.
As finish shown in the planar view of air bag of expansion, air bag 223 has outside cloth sheet 225, comprises the outside cloth sheet 225a in first front that is positioned at vehicle heading the place ahead and that fuse, that rearward the stretch outside cloth sheet 225b in the left side with first front outside cloth sheet 225a the right and left on vehicle-width direction and the right outside cloth sheet 225c.In addition, the back end edge of the left side outside and outside cloth sheet 225b in the right and 225c with the left and right sides side seam of the outside cloth sheet 226 in second front built in, travel forward to limit the passenger.In addition, the base and the top margin of outside cloth sheet 225 inner faces and its shape and outside cloth sheet 225 essentially identical inner cloth sheets 227 are sewed together.Inner cloth sheet 227 constitutes by the inner cloth sheet 227a in first front with the inner cloth sheet 227b in the left side and the right inner cloth sheet 227c that first front inner cloth sheet 227a the right and left fuses.The back end edge of the left side inner and inner cloth sheet 227b in the right and 227c with the left and right sides side seam of its shape and inside, outside cloth sheet 226 essentially identical second fronts, second front cloth sheet 228 built in.In addition, the base and the top margin of outside cloth sheet 226 in second front and the inner cloth sheet 228 in second front also are sewed together.
As shown in figure 16, the base of outside cloth sheet 225b in the left side and the left side inner cloth sheet 227b is sewed together with suture 233, and in addition, the base of the outside cloth sheet 225c in the right and the right inner cloth sheet 227c also is sewed together with suture 233.Equally, the top margin of outside cloth sheet 225b in the left side and the left side inner cloth sheet 227b is sewed together with suture 234, and in addition, the top margin of the outside cloth sheet 225c in the right and the right inner cloth sheet 227c also is sewed together with suture 234.
As shown in figure 17, the base of outside cloth sheet 225a in first front and front inner cloth sheet 227a is sewed together with suture 233, and its top margin is sewed together with suture 234.In addition, the base of outside cloth sheet 226 in second front and the inner cloth sheet 227 in second front also is sewed together with suture 233, and its top margin also is sewed together with suture 234.
As shown in figure 15, air bag 223 is normally finished when expanding, bulge 229 before forming between outside cloth sheet 225a in first front and the first front inner cloth sheet 227a.In addition, form left bulge 230 between outside cloth sheet 225b in the left side and the left side inner cloth sheet 227b, form right bulge 231 between the outside cloth sheet 225c in the right and the right inner cloth sheet 227c.In addition, form after expansion portion 232 between the inner cloth sheet 228 of the outside cloth sheet 226 in second front and second front.
According to this embodiment, preceding bulge 229, left and right sides bulge 230,231 and after expansion portion 232 inside interconnect and total cylindrical bulge B of formation on fore-and-aft direction.The inside of cylindrical bulge B is formed with the through hole H that runs through up and down.
Figure 20 for the outside cloth sheet 226 in outside cloth sheet 225, second front that show to constitute air bag 223, the inner cloth sheet 228 of the inner cloth sheet 227 and second front, be used to reinforce the figure of deployed condition of the protecting cloth 241 of near charging blower jack 225d on the outside cloth sheet 225a of first front reinforcement cloth 235 and protection suture.Strengthen cloth 235 and be used for being formed with on the protecting cloth 241 charging blower jack 235a, 241a.Be formed with deflation hole 225e on the left side and the right outside cloth sheet 225b, the 225c, the final stage gas that expands expansion at air bag 223 is discharged to the outside, thereby air bag 223 shrinks.First front outside cloth sheet 225a, reinforcement cloth 235 and protecting cloth 241 are having screw jack 225f, 235b, 241b separately on four positions of charging blower jack 225d, 235a, 241a.
The following describes the method for making air bag 223 with each cloth sheet shown in Figure 20.
At first, multi-disc is strengthened on the first front outside cloth sheet 225a inside face that cloth 235 (a slice only is shown among Figure 17) is layered in outside cloth sheet 225 (Figure 20 paper upper end), corresponding to charging blower jack 225d.Then protecting cloth 241 is placed on its end face.In addition, cloth sheet 225a, reinforcement cloth 235 and protecting cloth 241 are stitched together mutually with suture E along circular.
Then, stitched together with suture the base E1 ' of base E1 on the central portion bottom of outside cloth sheet 225 shown in Figure 20 and inner cloth sheet 227.Then, stitched together with suture the left side E2 ' of the outside cloth sheet 226 of one side E2 of outside cloth sheet 225 and second front.Stitched together with suture the right E3 ' of the outside cloth sheet 226 of the another side E3 of outside cloth sheet 225 and second front.In addition, stitched together the right E4 ' of the inner cloth sheet 228 of one side E4 of inner cloth sheet 227 and second front respectively with suture, and stitched together the left side E5 ' of the inner cloth sheet 228 of the another side E5 of inner cloth sheet 227 and second front.In addition, stitched together with suture the base E6 ' of the inner cloth sheet 228 of the base E6 of the outside cloth sheet 226 in second front and second front.
About then reversible outer cloth sheet 225, the outside cloth sheet 226 in second front, the inner cloth sheet of the inner cloth sheet 227 and second front 228a.Then, stitched together with suture top margin E8, the E8 ' of top margin E7, the E7 ' of the outside cloth sheet 226 of the outside cloth sheet 225 and second front and the inner cloth sheet 228 of the inner cloth sheet 227 and second front.Thereby make air bag 223.
As shown in figure 17, the air bag of so making 223 is connected on the base plate 222a of shell 222 with charging blower 224.That is, as shown in figure 17, there is the retainer 236 of the jack 236b of charging blower jack 236a and bolt 237 to contact on it with the surface of protecting cloth 241.Charging blower 224 is passed in shell 222 base plate 222a and goes up the assembly opening 222b that forms, and the flange 224b that is fixed on its periphery contacts with the bottom surface of base plate 222a.In addition, the 236b of jack separately of four bolt 237 inserting bolts 237,235b, 241b, 225f and the jack 222c, the 224c that on base plate 222a and flange 224b, form.Tighten the nut on each bolt 237 then, air bag 223 is fixed on the base plate 222a.In addition, although not shown, air bag 223 is contained in the shell 222 with folded state, on instrument carrier panel 216 end faces portion's (not shown) that easily breaks is arranged, and it expands at air bag 223 and breaks, opens when launching.
The following describes the service condition of the airbag apparatus 221 that as above constitutes.
Figure 15 is a birds-eye view of finishing the air bag 223 of expansion, and Figure 17 is for to cut open the cutaway view of getting along Figure 15 XVII-XVII line; Birds-eye view when Figure 18 begins to expand for air bag 223, Figure 19 is for to cut open the cutaway view of getting along Figure 18 XIX-XIX line.Vehicle 211 is during with for example opposite collision happens, and unshowned acceleration pick-up is opened, thereby charging blower 224 starts, and gas sprays into bulges 229 before the air bag 223 from charging blower 224 air nozzle 224a as shown in figure 18.Therefore, at first preceding bulge 229 expands and launches, and shown in arrow among Figure 18,19, gas bulge 229 left and right sides in the past flows into left bulge 230 and right bulge 231, the expansion thereby left bulge 230 and right bulge 231 expand.Gas flows in the after expansion portion 232 from the front of left and right sides bulge 230,231 then, launches after expansion portion 232 to expand.
Air bag 223 is in the final stage that expands and launch, and gas is discharged from deflation hole 225e, and air bag 223 volumes reduce, thereby attenuative effect is at passenger's undue pressure on one's body.
Shown in Figure 13,15, when air bag 223 was normally finished expansion, first front inner cloth sheet 227a contacted with each other with the left side inside cloth sheet 227b and inside, the right cloth sheet 227c of left bulge 230 of formation and right bulge 231 within the preceding bulge 229 of formation; The left side inner cloth sheet 228 in second front inner and the right inner cloth sheet 227b, 227c and formation after expansion portion 232 contacts with each other.Thus, through hole H is closed fully.In addition, at this moment, the major part of through hole H is positioned at instrument carrier panel 216 rears.As shown in figure 14, the leading section of through hole H can stretch out forward from the rear end of instrument carrier panel 216.
The characteristics of above-mentioned airbag apparatus embodiment are as follows.
(1) because through hole H is positioned at air bag 223 inside, the gas of the inflow preceding bulge 229 that at first expands.In the past one after the other expand left and right bulge 230,231, left and right sides broadening air bag simultaneously of bulge 229 gas that flows to left and right sides bulge 230,231 then.Therefore, the speed of rearward launching reduces.In addition, after air bag is finished expansion, through hole H closure, but so active constraint passenger.In addition, the reducing of vehicle parts such as instrument carrier panel 216, Windshield 217 and development rate has nothing to do, so the installation degree of freedom of airbag apparatus on vehicle improves.
When (2) air bag was finished and expanded, through hole H was closed fully, and after expansion portion 232 is subjected to the support of left and right sides bulge 230,231, though therefore air bag finish one of the passenger in back of expanding prick after expansion portion 232 back also can the active constraint passenger.In addition, air bag is finished the back through hole H that expands most of as long as closed (contacting with each other more than the inner cloth sheet Zhou Changdu 50% or 50%), effect when its effect just is equivalent to through hole H all closed (contacting with each other in whole week of inner cloth sheet) substantially, so through hole H need not whole closures.
(3) in addition, even in air bag 223 expansion processes, after expansion portion 232 runs into obstacle accidentally, and still not closed through hole H also can allow 232 distortion of after expansion portion, thus the restriction after expansion portion 232 violent obstacles of pressing.
(4) in addition, have highly and instrument carrier panel 216 identical obstacles even instrument carrier panel 216 rears are accidental, obstacle is only invaded the still not closed through hole H of the air bag 223 that launches downwards, thereby can suppress the influence to obstacle.
(the 3rd embodiment)
The following describes the 3rd embodiment.
Figure 21 is the expansion drawing of each cloth sheet of formation air bag 223; Birds-eye view when Figure 22 begins to expand for air bag 223; Figure 23 is Figure 22 charging blower 224 and from beginning to end 's 244 a amplification view.
According to this embodiment, air bag 223 because of the gas left and right sides deflection of bulge 229 before spraying into from charging blower 224 air nozzle 224a expand, at Width broadening to the left and right.When making air bag 223, the neighboring E9 that strengthens cloth 242 is sewn on outside cloth sheet 225 inside faces with suture as Figure 21.Equally, with suture the neighboring E9 that strengthens cloth 243 is sewn on inner cloth sheet 227 inside faces.Then, as shown in figure 23, make the ellipse district E10 that strengthens cloth 242,243 left and right sides with suture.Therefore, externally form from beginning to end 244 between cloth sheet 225 and the inner cloth sheet 227, respectively form gas passage 245 from beginning to end both sides about in the of 244.
According to this embodiment, from beginning to end 244 and gas passage 245 formation deflector.
According to this embodiment, the gas deflection to the left and right of bulge 229 before spraying into, so left and right sides bulge 230,231 expansion of on vehicle-width direction, expanding, as shown in figure 22, through hole H is further increase on vehicle-width direction.Therefore can further reduce the speed that after expansion portion 232 rearward launches, even the instrument carrier panel rear obstacle at the vehicle-width direction top offset, also can make obstacle invade through hole H.
In addition, the foregoing description can be done following correction.
As shown in figure 24, can be used as deflector to the air flow deflector cloth sheet 246 that is arranged on outside cloth sheet 225a one side of first front at left and right directions upper deflecting air-flow.In addition, can connect the air flow deflector cloth sheet 246 and first front inner cloth sheet 227a.
As shown in figure 25, can be used as the top width limited part to the ribbon frenulum 247 that is connected on left and right sides bulge 230,231 top margins.According to this another embodiment, air bag is finished the expansion passenger when running into after expansion portion 232, and the distortion of air bag top is subjected to further inhibition, thereby improves the passenger restraint performance.Although air bag top development rate is more or less accelerated, through hole H is not closed in expansion process, so effect is similar to first embodiment, can suppress the influence to obstacle.
As shown in figure 26, can be used as the bottom width limited part to the ribbon frenulum 248 that is connected on air bag 223 bases equally.The position of frenulum 248 can be arranged on the front end or rear end of through hole H.When frenulum 248 was arranged on the rear end, frenulum 248 was finished half place of horizontal throw D between swelling state lower gasbag 223 rear ends at instrument carrier panel 216 rear ends and air bag.
According to this another example, the distortion of air bag further is inhibited, and further improves constraint passenger's performance.
In another example shown in Figure 26, inner cloth sheet 227a, the outside cloth sheet of the comparable correspondence of 227b, 227c, 228 length on above- below direction 225a, 225b, 225c, 226 long, thus at least a portion of the contact surface of first front inner cloth sheet 227a, the left side inner cloth sheet 227b, the inner cloth sheet 227c in the right and the inner cloth sheet 228 in second front, form flaccid part.At this moment, the tension force that air bag is finished inner cloth sheet when expanding becomes littler than outside cloth sheet, and the area of contact of inner cloth sheet increases, and air bag is finished when the back passenger of expanding runs into after expansion portion 232 and further effectively suppressed the air bag distortion, thereby improves the passenger restraint performance.
Preceding bulge 229 and after expansion portion 232 all can omit, thereby form the whole cylindrical circular bulge that is made of three bulges.
Although according to the foregoing description, preceding bulge 229, left and right sides bulge 230,231 penetrate on above-below direction with the interface that contacts on after expansion portion 232 inboards, and these contact interfaces also can be in the top closure.
As detailed above, according to the present invention, the installation degree of freedom of airbag apparatus on vehicle improves, and the initial deployment speed of air bag reduces.
(the 4th embodiment)
Shown in Figure 27,28A and 28B, air bag 310 is finished the roughly square prismatic annular element for forwards dwindling from the bottom surface that is made of passenger's one side wall portion 328 when expanding, in addition, there is the through hole 311 that penetrates up and down from front upper part 310a to rear lower 310b its inside when air bag is finished expansion, and through hole 311 is by expansion base fabric 322 closures around it when finishing expansion.That is, according to this air bag 310, the circumferential body portion 312 of heaving of expanding is made of preceding bulge 313, after expansion portion 314, left bulge 315 and right bulge 316 around the through hole 311.
In addition, all base fabrics 322 in the cloth sheet spare of looping main part 312 comprises on through hole 311 inner peripheral surfaces and are finished when expanding the periphery base fabric 326 relative with interior all base fabric 322 at air bag on air bag 310 outer peripheral faces.In addition, interior all base fabrics 322 comprise the first inboard base fabric 323 and the rear rectangle second inboard base fabric 324 that 323d the place ahead, base is recessed greatly.In addition, periphery base fabric 326 comprises that first outside base fabric 327 that 327a the place ahead, base is recessed greatly and rear constitute rectangle second outside base fabric 328 of passenger's side wall portion.Base fabric 323,324,327,328 and hereinafter described strengthen cloth 330,331,322 and made by the soft woven cloth of poly-ester fibres or polyamide fibre and so on is not coated with silicone and so on paint on its surface.The first inboard base fabric 323 comprise in the past bulge 313 back 313b in the back upper place the oblique left bulge 315 that stretches to the left and right sides and inside face 315b, the 316b of right bulge 316.First outside base fabric 327 comprise in the past bulge 313 front 313b in the back upper place the oblique left bulge 315 that stretches to the left and right sides and outside face 315a, the 316a of right bulge 316.The second inboard base fabric 324 becomes the 314 front 314a of after expansion portion, and second outside base fabric 328 becomes the 314 back 314b of after expansion portion.
In addition, preceding bulge 313 front 313a have expanding gas inflow entrance 318 in air bag 310 periphery base fabrics 326 left and right directions centre, and its periphery 317 is contained on the shell 54.Have a plurality of on the periphery 317 of gas inflow entrance 318 periphery 317 assembly openings 319 that install on shell 54 bottom wall portion 55.Periphery 317 is sewed with two and strengthens cloth 330,332 on air bag 310 inner peripheral surfaces, strengthen having on cloth 330 end faces reinforcement cloth 331 of the protection suture portion of not making on it.Each strengthens that gas inflow entrance 318 and assembly opening 319 are also arranged on the cloth 330,331,332.In addition, the deflation hole 320 of discharging excessive expanding gas is arranged on the left and right sides bulge 315 and 316 of periphery base fabric 326.
In addition, air bag 310 has drainage portion 333, shunts expanding gas up and down in the boundary portion of preceding bulge 313 and left and right sides bulge 314 and 315.Drainage portion 333,333 is by interior all base fabrics 322 and periphery base fabric 326 with insert therebetween reinforcement cloth 332 and be sewn into ellipse and form.As shown in figure 35, when 333 pairs of expanding gas of drainage portion carried out drainage, expanding gas G shunted up and down and flows to the rear when back is most of to flow to the top.
In addition, when forming circumferential body portion 312, in this embodiment, circumferential body portion 312 usefulness polyester and so on suture 334 is made and is formed, at first, stitched together the base 323d and the 327d of the first inboard base fabric 323 and first outside base fabric 327, then, stitched together the left side 323b of the left side 324b of the second inboard base fabric 324 and the first inboard base fabric 323, the right 323c of the right 327a of the second inboard base fabric 324 and the first inboard base fabric 323 is stitched together, thereby form all base fabrics 322 in the annular, in addition, stitched together the left side 327b of the left side 328b of second outside base fabric 328 and first outside base fabric 327, the right 327c of the right 328c of second outside base fabric 328 and first outside base fabric 327 is stitched together, thereby forms annular periphery base fabric 327.In addition, be sewed with reinforcement cloth 330 and 332 on first outside base fabric 327 originally.Base fabric 327 and strengthen on the cloth 330,331 and 332 gas inflow entrance 318 and assembly opening 319 being arranged respectively, also can base fabric 327 and strengthen cloth 330,332 stitched together, cover strengthen cloth 331 after, integral body gets out gas inflow entrance 318 and assembly opening 319.
Then, the base 328d of the base 324d of interior all base fabric 322 second inboard base fabrics 324 and periphery base fabric 322 second outside base fabrics 328 is made about upset base fabric 322 and 326 after rising, make the linear slit of the portion of making not expose on air bag 310 outer peripheral faces, in addition, stitched together the top margin 327a of the top margin 323a of the first inboard base fabric 323 and first outside base fabric 327, the top margin 324a and the 328a of the second inboard base fabric and second outside base fabric 328 are stitched together.
In addition, interior all base fabrics 322 and periphery base fabric 326 formation drainage stitched together portion 333,333 o'clock, can form the circular column body 312 (air bag 310) of this embodiment at 316 front end places, left and right sides bulge 315 back.
The following describes the air bag of as above making 310 is installed on the vehicle, at first folded airbag 310, make bolt 50b on its inner retainer 50 pass assembly opening 319 backs and encase folding air bag 310 (see figure 2)s with the infantees 47 that easily break, and prevent that air bag 310 from scattering.In addition, when folded airbag, to carrying out folding after laterally folded step and the vertical folding step through the air bag of folding step in advance.
Forming folded airbag in advance 336 shown in Figure 30 in the folding step in advance.In folding step in advance, at first, as shown in figure 29, air bag 310 (circumferential body portion 312) is in non-expansion state, and gas inflow entrance 318 is positioned on the bottom surface, and interior all base fabrics 322 are inserted in gas inflow entrance 318 tops, and periphery base fabric 326 left and right symmetricallies shakeout.In addition, the circumference base 312a of through hole 311 turned back and formed revers turn part 335 to through hole 311 top side 311b when air bag was finished and expanded as shown in figure 30 this moment.The front, center 336af of base 336a is positioned at gas inflow entrance circumferential part 317 places that pressed down by retainer 50 after the inflection, the inflection amount of the back 312ab of circumference base 312a is bigger than front 312af, make the gauffer of the 336ab of rear portion central authorities revers turn part just open anteposition on the top side of front, center 336af, thereby through hole is opened into circle shown in Figure 33 when air bag 310 expands.
In advance behind the folding step, shown in Figure 31 A and 31B, form left and right sides gauffer CH through folding in advance air bag 336 and make with gas inflow entrance 318 to be that the fore-and-aft direction width at center reduces with laterally folded step is folding, gauffer CV makes the left and right directions width reduce before and after forming with the vertical folding step shown in Figure 31 C then, thereby can pack the air bag that is folded in the shell 54 into.In this embodiment, in laterally folded step, 337 one-tenth wind-box shapes of gas inflow entrance 318 the place ahead parts fold into gas inflow entrance 318 top positions and make front 336b near gas inflow entrance 318.In addition, in the vertical folding step, limit, left and right sides 336c is folded into gas inflow entrance 318 top positions with 336d upper part 338 and 339 one-tenth wind-box shapes, make limit, left and right sides 336c and 336d near gas inflow entrance 318.
In addition,, encase folding air bag 310, prevent that air bag from scattering with the infantees 47 that can break with after the vertical folding step is finished folding of air bag 310 as mentioned above.
Then, from above a folding air bag 310 installed to when each bolt 50b inserted assembly opening 57 above shell 54 bottom wall portion 55.Then, the top of charging blower 52 main part 52a is inserted jack 56, gas inflow entrance 318 and retainer 50 bottom 50a from the below after, the assembly opening 52d of each bolt 50b insertion charging blower 52 flange part 52c that stretch out downwards from bottom wall portion 55.Then, tighten at the nut 51 on the bolt 50b that stretches out from charging blower 52 flange part 52c and can folding air bag 310 and charging blower 52 be contained on shell 54 bottom wall portion 55.
Then, side wall portion 50 insertions of shell 54 are contained in the connecting wall portion 65 of instrument carrier panel 1 airbag cover 61 on the vehicle, the latch hook 60 of shell 54 inserts in the lockhole 66 of connecting wall portions 65, thereby latch hook 60 is locked in the connecting wall portion 65.In addition, on carriage 58, bolt on and 7 can be contained in airbag apparatus M on the vehicle with nut 58a through mounting plate 6c.
In addition, when installing to airbag apparatus M on the car two, can fuse air bag 310 and the shell 54 that charging blower 52 is housed earlier, when instrument carrier panel 1 is contained on the vehicle, airbag apparatus M is fixedly connected on the car body 6 then with bolt 7.
After airbag apparatus M installs on the vehicle, when the air supply opening 52b of charging blower 52 supplies expanding gas G, air bag 310 expands, infantees 47 breaks, airbag cover 61 portion 64 of easily breaking breaks, air bag channel part 62F and 62B open shown in Figure 27 long and two-short dash line, thereby air bag 310 is opened formed opening 59 from the air bag channel part 62F of airbag cover 61 and 62B and significantly stretched out.In addition, finish the unnecessary expanding gas G in the back of expanding and discharge from deflation hole 320, in addition, label W represents Windshield among Figure 27.
This embodiment according to airbag apparatus M, air bag 310 constitutes circumferential body portion 312, air bag is finished the through hole 311 that comprises when expanding from front upper part 310a to rear lower 310b, the gas inflow entrance 318 that flows into air bag for expanding gas G is positioned on the periphery base fabric 326 front 313a of circumferential body portion 312, and its periphery 317 is contained on the shell 54.Therefore, when air bag 310 begins to expand, when the expanding gas G from the charging blower 52 that inserts gas inflow entrance 318 when bulge 313 flows into left and right sides bulge 3145 and 316 to the left and right in the past, vertical folding gauffer CV and laterally folded gauffer CH open, expand into Figure 32,33,34 successively shown in air bag 310A, 310B, 310C, 310D and 310E, air bag opening 311a on through hole 311 bottom surfaces when after expansion portion 314 moves from top to bottom broadens and finishes expansion.
Promptly, according to air bag 310, air bag 310A, 310B, 310C, 310D and 310E shown in Figure 32 and 33, the circumference base 312a of through hole 311 moves from the top down, and in addition, air bag 310 is opened and finished expansion along with the gauffer of revers turn part 335, through hole 311 closures, therefore before through hole 311 closures, even there are height and the identical obstacle B of instrument carrier panel 1 end face 1a in instrument carrier panel 1 place, obstacle B also can insert air bag 310 through holes 311 from the below.That is can be not downwards when, air bag 310 is finished and expanded or to the rear view of vehicle obstacle B that thrusts.
In addition, even without obstacle B, air bag 310 expanding gas G when gas inflow entrance 318 flows into ringwise, therefore, as air bag 310A among Figure 34, shown in 310B and the 310C, expanding gas G is right-hand left flowing between periphery base fabric 326 and interior all base fabrics 322, thereby broadening on left and right directions near the position of passenger's side wall portion 328 and periphery base fabric 326 with it, through hole 311 is opened to rear view of vehicle and is moved simultaneously, therefore, even the passenger leans against the passenger that spinal support promptly correctly is sitting on the seat and moves forward, on passenger's width that the passenger broadens about also can being accurately constrained in, that is, wall portion 328 itself and the first periphery base fabric 327 at wall portion 328 places do not apply focus pressure.
Therefore, passenger-seat airbag apparatus M according to this embodiment, the air bag 310 that expand to launch can usefulness this wide passenger restraint on the tram, even the obstacle B contour with the end face 1a of instrument carrier panel 1 arranged, obstacle B also can insert through hole 311 and prevent air bag collision obstacle B.
In addition, air bag 310 according to this embodiment, when folded airbag, air bag is in non-expansion state, through hole 311 base 311a are folded back to top margin 311b, gas inflow entrance 318 is positioned on the bottom surface, interior all base fabrics 322 insert back periphery base fabrics 326 and are arranged in gas inflow entrance 318 tops, air bag is folded into left and right symmetrically earlier and shakeouts, form left and right sides gauffer CH with laterally folded folded airbag 336 then, make with gas inflow entrance 318 to be that the fore-and-aft direction width at center reduces gauffer CV before and after forming with vertical folding then, make the left and right directions width reduce, thereby can pack the air bag that is folded in the shell 54 into.
When folded airbag 310 like this, air bag 310 expands, expanding gas did not flow to upward revers turn part 335 of through hole 311 circumference base 312a when through hole 311 was opened, the situation that through hole 311 bottom opening 311a expand during therefore with through hole 311 circumference base not inflection of 312a relatively, the air bag internal diameter can be opened very greatly, insert in the through hole 311 thereby be convenient to obstacle, further prevent to finish air bag 310 collision obstacles of expansion and obstacle is pushed to under-vehicle or rear.In addition, the revers turn part 335 that the back lower place is heaved at so folding air bag 310 position above revers turn part 335 expands, and makes the circumference base 312a of through hole 311 move from the top down, thus convenient finishing of expanding.
In addition, as shown in figure 35, this embodiment air bag 310 has the drainage portion 333 as the drainage unit of restriction air-flow G to make expanding gas G shunt up and down when air bag 310 expands and above flowing to more, therefore be convenient to obtain a kind of like this expansion and finish mode, under this mode, it be after expansion portion 314 with the periphery 317 of gas inflow entrance 318 is that center of turn rotates that the circumference base 312a of through hole 311 moves from the top down.In addition, drainage portion 333 can use the frenulum restriction air-flow G of interconnection base fabric 322 and 326, also can use cylindrical drainage cloth steering current G.
In addition, align even when folding in advance, the top margin 328a of passenger's side wall portion 328 folded in advance with gas inflow entrance 318, and air bag constitutes to finish when expanding and places the top margin 328a of passenger's side wall portion 328 back 314b that the top makes after expansion portion 314 when the airbag inflation substantially vertically the time rapidly, mode (after expansion portion 314 rotates mode with the periphery 317 of gas inflow entrance 318 as center of turn) is finished in the expansion of the circumference base 312a of mobile from the top down through hole 311 in the time of also using air bag 310 to expand, and promptly using so in advance, the method for folding of folded airbag also can provide aforesaid way.
In addition, the single or multiple through holes 311 that penetrate can formed by all base fabrics 322 each position in sewing up on the inner peripheral surface of interior all base fabrics 322 on air bag 310 above-below directions.
(the 5th embodiment)
Shown in Figure 36-39, in the process that airbag inflation is finished, be constructed to have substantially the annular element of the through hole 411 that penetrates to the above-below direction of bottom, back 411b at the past top 411a according to the air bag 410 of the 5th embodiment, this annular element is narrow in its anterior side by shape formation and this annular element that expands with the four prisms cylinder shape substantially, this four prisms cylinder has formed the bottom surface by the face 429 in passenger side, air bag is finished expansion, heaving by making around the base fabric 422 and 426 of through hole 411, thus through hole 411 closures.That is,, expand with circumferential body portion 412 bulge 413, after expansion portion 414, left bulge 415 and the right bulge of heaving 416 before being provided with around the through hole 411 according to air bag 410.
In addition, the cloth sheet spare of looping main part 412 constitutes by comprising following part: be arranged in the interior all base fabrics 422 on through hole 411 inner peripheral surfaces; With periphery base fabric 426, this periphery base fabric 426 is disposed on air bag 410 outer peripheral faces, with relative with interior all base fabric 422 when the expansion of finishing air bag.As shown in figure 40, interior all base fabrics 422 form by following structure: be positioned at the bending first inboard base fabric 423 and the second rectangular-shaped inboard base fabric 424 that is positioned on the rear side on the front side.Periphery base fabric 426 forms by following structure: be positioned at bending first outside base fabric 427 on the front side and constitute second outside base fabric 428 of passenger's side surface on rear side.Base fabric 423,424,427 and 428 by comprise poly-ester fibres, polyamide fibre or with it the similar flexible woven cloth make, and base fabric is constructed to uncoated cloth, this uncoated cloth do not use silicone or with it similarly the smears apply.
In addition, the first inboard base fabric 423 is constructed to: by the inner face 415b that constituted left bulge 415 and right bulge 416 and the sidepiece of 416b are set, from the lateral curvature that constituted preceding bulge 413 back 413b, stretch with the both sides to rear side.First outside base fabric 427 is constructed to bending, stretching, by bulge 413 front 413a sidepieces before constitute, the outside face 415a and the 416a sidepiece that have constituted left bulge 415 and right bulge 416 are set to the both sides of rear side.The second inboard base fabric 424 becomes the part that has constituted the 414 front 414a of after expansion portion, and second outside base fabric 428 becomes the part that has constituted the 414 back 414b of after expansion portion.In addition, in this embodiment, when air bag 410 expanded expansion, the back 414b of after expansion portion 414 had constituted passenger side surface 429.
In addition, the anterior 426a sidepiece of air bag 410 periphery base fabrics 426 (front 413a side) is provided with gas inflow entrance 418, and this gas inflow entrance 418 is used for periphery 417 is contained in shell 54, by carrying out opening with the shape of circle so that expanding gas G flow into wherein.Be formed with a plurality of assembly openings 419 on the periphery 417 of gas inflow entrance 418, it is used for inserting the bottom wall portion 55 that wherein gas inflow entrance periphery 417 is installed to shell 54 by the bolt 50b that makes retainer 50.The gas inflow entrance periphery 417 that is positioned at air bag 410 inner peripheral surface sides is sewn, and strengthens cloth 430 and 431 to be provided with two, and in addition, the top surface side of strengthening cloth 431 is provided with the reinforcement cloth of not sewing up, be used to protect suture portion 432.In addition, periphery base fabric 426 has the deflation hole 420 that is used to discharge excessive expanding gas G on the part of a left side and right bulge 415 and 416.
In addition, the air bag 410 of this embodiment is provided with drainage portion 434 (drainage unit), as be used for when airbag inflation launches, moving, with the device GM of the back 414b (passenger side surface 429) of guiding after expansion portion 414.Drainage portion 434 is used on upper and lower direction shunting and flows into the expanding gas G of circumferential body portion 412, and lay respectively in a left side and right bulge 414 and 415 zones, on the position at the rear that is positioned at central authorities on the fore-and-aft direction and be positioned on the above-below direction on the position above central (seeing Figure 36 and 38).Drainage portion 434 separately is by sewing up interior all base fabrics 422 and periphery base fabric 426 for oval and strengthen cloth 435 and 436 and form by inserting, and by the 434a of the portion that interconnects of interior week and periphery base fabric 422 and 426 be positioned at and be essentially Frusto-conical part 422a and 426c (main part 434b) formation (referring to Figure 38-40) around the connecting portion 434a.That is, launch when air bag 410 expands, when expanding gas G flowed into circumferential body portion 412, periphery base fabric 426 was pulled to outer circumferential side, and interior all base fabrics 422 also be pulled in all sides so that through hole 411 closures.Therefore, as shown in figure 38, at the part place that is provided with drainage portion 434, connecting portion 434a is located substantially on the middle body on the left and right directions of left bulge 415 and right bulge 416 respectively, spurs the part 422a and the 426c (main part 434b) that have constituted connecting portion 434a peripheral part on the inner periphery and the outer periphery base fabric 422 and 426 that separates simultaneously.Promptly, formed this form: by connecting portion 434a and main part 434b, separate left and right sides bulge 415 and 416 (seeing Figure 38 and 39) along left and right directions, therefore, air bag 410 according to present embodiment, the expanding gas G that flows into circumferential body portion 412 from gas inflow entrance 418 flows, with shape it is broadened along circumferential body portion 412, the past bulge 413, reach thereafter to a left side and right bulge 415 and 416, and in a left side that separates and right bulge 414 and 415, air-flow is by the connecting portion 434a and the main part 434b of drainage portion 434, on direction up and down, shunt, and flow to after expansion portion 414, on above-below direction, to make its broaden (seeing Figure 39).
The following describes the making of air bag 410.In the situation of this embodiment, air bag 410 (circumferential body portion 412) forms by using polyester line or similar with it suture 438 to make.Stitched together the base 423d and the 427d of the first inboard base fabric 423 and first outside base fabric 427.Then, stitched together the left side 424b of the second inboard base fabric 424 with the limit 423b of the left end side of the first inboard base fabric 423 of bending, and the limit 423c of the right-hand member side of the right 424c of the second inboard base fabric 424 and the first inboard base fabric 423 is stitched together, thereby form the inboard base fabric of sewing up to annular 422.In addition, stitched together the limit 427b of the left end side of the left side 428b of second outside base fabric 428 and first outside base fabric 427, and the limit 427c of the right-hand member side of the right 428c of second outside base fabric 428 and first outside base fabric 427 is stitched together, thereby form the outside base fabric 426 of annular.In addition, will strengthen cloth 430 and 431 in advance is sewn on first outside base fabric 427.On base fabric 427 and reinforcement cloth 430,431 and 432, can be formed with gas inflow entrance 418 and assembly opening 419 respectively, perhaps also can with base fabric 427 and strengthen cloth 430,431 stitched together and install strengthen cloth 432 after, integrally form gas inflow entrance 418 and assembly opening 419 by boring.
Then, the base 428d of the base 424d of interior all base fabric 422 second inboard base fabrics 424 and periphery base fabric 426 second outside base fabrics 428 is sewed together, and upset base fabric 422 and 426, make the linear slit of the portion of making not be exposed on the outer peripheral face of air bag 410.In addition, strengthening base fabric 422 and 426 stitchings, thereby forming drainage portion 434,434 under cloth 435 and 436 states that insert.Then, when the top margin 424a of and second inboard base fabric 424 and second outside base fabric 428 stitched together each other as the top margin 427a of the top margin 423a of the first inboard base fabric 423 and first outside base fabric 427 and 428a are stitched together each other, formed the circumferential body portion 412 (air bag 410) of this embodiment.
The following describes the air bag of as above making 410 is installed on the vehicle, at first, inner retainer 50 is being installed on it so that under the state that bolt 50b stretches out from the assembly opening 419 that separates folded airbag 410, then, encase the air bag 410 that has folded with the infantees 47 that easily breaks.In addition, when folded airbag 410, after carrying out in advance folding step and after carrying out laterally folded step and vertical folding step, folded airbag 410.
In folding step in advance, formed the folded airbag in advance 440 shown in Figure 41 and 42.In folding step in advance, (circumferential body portion 412) is under the unexpansive state at air bag 410, gas inflow entrance 418 is exposed on the bottom surface, interior all base fabrics 422 are placed on the top of gas inflow entrance 418, and the neighbouring part of the upper back 26b of periphery base fabric 426 (neighbouring part of the top margin 428a of second outside base fabric 428) is relatively arranged, thereby is substantially symmetrically shakeout on a left side and right.In addition, air bag 410 according to present embodiment, folded airbag 440 is by following formation in advance: the folding part that has constituted first outside base fabric 427 of a left side and right bulge 415 and 416, make that the whole zone that has formed second outside base fabric 428 on passenger side surface 429 flattens substantially when air bag 410 expands expansion.Definitely say, second outside base fabric 428 (the second inboard base fabric 423) is arranged on the position of contiguous gas inflow entrance 418, with by respectively on the part of first outside base fabric 427 (the first inboard base fabric 423) that has constituted a left side and right bulge 415 and 416 generation gauffer C1 and gauffer C2 fold, gauffer C1 is folded-out, gauffer C2 folded inward.
In advance behind the folding step, shown in Figure 43 A, 43B, 44A, 44B and 44C, through folding in advance air bag 440 is fold to constitute size in the shell 54 of can packing into by following: by laterally folded step, this step is a narrowed width on the fore-and-aft direction at center by making with gas inflow entrance 418 at formation gauffer CH on the left and right directions; And by the vertical folding step, this step is by the narrowed width on making left and right directions at formation gauffer CV on the fore-and-aft direction.In the situation of this embodiment, laterally folded step is finished in this way: by rolling, fold into the position that is positioned over gas inflow entrance 418 tops with the part 441 that will be positioned at gas inflow entrance 418 rears, make its back 440a one side near gas inflow entrance 418, then, the part 443 that will be positioned at gas inflow entrance 418 the place aheads is folded into bellows-shaped, it is placed in the upper side of roll fold portion 442, makes front 449 near gas inflow entrance 418.In addition, the vertical folding step is finished in this way: part 444 and 445 is folded on a left side and the right 440c and the 440d side with bellows-shaped, to be placed on, make a left side and the right 440c and 440d near gas inflow entrance 418 from gas inflow entrance 418 position upward.In this embodiment, by folded airbag 410, when expanding expansion, air bag 410 formed the guiding mobile device GM of the 414 back 414b of after expansion portion (passenger side 429).
In addition, when the vertical folding step has been finished air bag 410 folding after carrying out, as mentioned above, encase the air bag that has folded, make air bag can not scatter with rupturable infantees 47.
Then, from above the bolt 50b that separates inserted assembly opening 57 in, the air bag 410 that has folded is installed on shell 54 bottom wall portion 55 from opening 54a.Then, the top of charging blower 52 main part 52a is inserted the bottom 50a of jack 56, gas inflow entrance 418 and retainer 50 from the below, and inserting the assembly opening 52d of charging blower 52 flange part 52c from bottom wall portion 55 bolt 50b that stretch out to downside, that separate.Then, when nut 51 is secured to when charging blower 52 flange part 52c bolt 50b that stretch out, that separate goes up, on the bottom wall portion 55 that air bag 410 that has folded and charging blower 52 are installed in shell 54.
Then, side wall portion 59 insertions of shell 54 are contained in the connecting wall portion 65 of instrument carrier panel 1 airbag cover 61 on the vehicle, the latch hook that separates 60 of shell 54 inserts in the lockhole 66 of connecting wall portions 65, and the latch hook 60 that separates is locked by connecting wall portion 65.In addition, when bolt 7 was secured to nut 58a on separately the carriage 58 by mounting plate 6c, the airbag apparatus M that is used for passenger seat can be installed in vehicle.
In addition, when being installed to airbag apparatus on the vehicle, can in the following way airbag apparatus M be installed on the vehicle: in advance the airbag cover 61 of the shell 54 that air bag 410 and charging blower 52 are housed with instrument carrier panel 1 fused, and when instrument carrier panel 1 is installed, airbag apparatus M is fixedly connected on the car body side 6 by using bolt 7.
After airbag apparatus M was installed on the vehicle, when the air supply opening 52b from charging blower 52 supplied expanding gas G, air bag 410 expanded, so that infantees 47 breaks, and the portion of easily breaking 64 of airbag cover 61 is broken, and air bag channel part 62F and 62B are opened, shown in Figure 46 long and two-short dash line.In addition, air bag 410 stretches out significantly from the air bag channel part 62F that opened airbag cover 61 and the opening 67 of 62B, with finish expand and unnecessary expanding gas G from the discharge of deflation hole 320.In addition, label W represents Windshield among Figure 46.
In addition, according to the airbag apparatus M of this embodiment, air bag 410 is constructed to be equipped with the annular element of the through hole 411 that penetrates basically on above-below direction.That is, be inflated when launching at air bag 410, the gas G that flows into from gas inflow entrance 418 is directly to passenger side 429 1 side flow, but flows with the shape along air bag 410 (circumferential body portion 412) broaden on left and right directions (referring to Figure 37).Therefore, be limited under the state that rear side significantly stretches out, air bag 410 is remarkable broadening on left and right directions, shown in Figure 45 long and two-short dash line.Therefore, when air bag 410 expanded with expansion, the passenger side surface speed of side shifting backward was restricted.
In addition, airbag apparatus M according to this embodiment, at swelling gasbag so that it is when launching, passenger side surface 429 is constructed to make that the rear side of the relative vehicle of airbag apparatus M is removable, it is configured to by following basically: aspect is substantially vertically also reaching broadening on the left and right directions on the above-below direction, and by the guiding mobile unit GM of passenger side 429 is set.Say that definitely according to the airbag apparatus M of this embodiment, guiding mobile unit GM is by with air bag 410 be arranged on drainage portion (drainage unit) 434,434 folding being configured on the air bag 410.
Airbag apparatus M according to this embodiment, the part of air bag 410 be set at the gas inflow entrance 418 that is arranged in folded airbag 440 in advance over against the position, this part has constituted the neighbouring part of the top margin 428a of the second periphery base fabric 28, and the second periphery base fabric has constituted passenger side surface 429 (referring to Figure 42).Therefore, in the starting stage of airbag inflation, be positioned at the expanding gas G that the part 429a of neighbouring part on the top on passenger side surface 429 flows into by gas inflow entrance 418 earlier pressure, shift upside (referring to Figure 46) onto through on all base fabrics 422.In addition, push away on the part 429a of the neighbouring part on the top by will being positioned at passenger side surface 429, laterally folded and gauffer vertical folding is opened rapidly.In addition, airbag apparatus M according to this embodiment, because in the zone of the left side of air bag 410 and right bulge 415 and 416, be provided with the drainage portion 434 that is used on above-below direction, expanding gas G being carried out drainage, 434, therefore the expanding gas G that flows into from gas inflow entrance 418, with shape it is broadened along circumferential body portion 412, the past bulge 413, reach thereafter to a left side and right bulge 415 and 416, and in a left side that separates and right bulge 415 and 416, air-flow is shunted on above-below direction by drainage portion 434, and flow to after expansion portion 414, on above-below direction, to make its broaden (referring to Figure 39).Therefore, airbag apparatus M according to this embodiment, at swelling gasbag so that the starting stage of its expansion, air bag 410 is not only on the left and right directions, also expand on above-below direction with remarkable broadening, so passenger side surface 429 (second outside base fabric 428 and the part that is positioned at first outside base fabric 427 of a left side and right bulge 415 and 416, this part has constituted peripheral part of second outside base fabric 428) by basic comprising aspect and moving to rear view of vehicle, this aspect is at broadening (ginseng Figure 46) on the above-below direction and on the left and right directions.Therefore, even meet proal passenger, also can accurately protect the passenger, and not make pressure fully act on passenger side when passenger side surface 429.
Therefore; the airbag apparatus M that is used for the passenger according to present embodiment; when air bag 410 expands with expansion; the face that has constituted passenger side by basically vertically aspect, form at broadening structure up and down and on the left and right directions; and, protect the passenger thereby stablize by further limiting under its state that moves, making air bag 410 to move to rear view of vehicle.
In addition, according to the airbag apparatus M of present embodiment, even when air bag 410 is configured to comprise the through hole 411 that penetrates substantially on above-below direction, through hole 411 is finished when expanding at air bag 410 and is closed.Therefore, the internal pressure be scheduled to can be guaranteed, the protection passenger can be stablized by the air bag 410 of finishing expansion.
Particularly, air bag 410 according to the airbag apparatus M of this embodiment, folded airbag 440 is by following formation in advance: partially folded by first outside base fabric 427 that constitutes a left side and right bulge 415 and 416, make that the whole zone that constitutes second outside base fabric 428 on passenger side surface 429 flattens substantially when air bag 410 expands with expansion.Therefore, when air bag 410 expands with expansion, compare with the situation of folding second outside base fabric 428, move to passenger side under the state of broadening on the above-below direction and on the left and right directions easily on passenger side surface 429, and can further limit the moving velocity of passenger side surface 429 to passenger side.
In addition, air bag 410 according to this embodiment, as the drainage unit, drainage portion 434 be arranged on from a left side and right bulge 15 and 16 fore-and-aft direction on mediad after, and the position on the mediad from the above-below direction, this drainage portion 434 sews up by interior all side base fabric 422 and periphery base fabric 426 and circularly constitutes, therefore flow into the expanding gas of a left side and right bulge 415 and 416 by drainage, with part place in vicinity after expansion portion 414, broadening on above-below direction, in addition, the amount of expanding gas person who lives in exile bottom in after expansion portion 414 is bigger than the amount that flows into the top.Therefore, more expanding gas G flows to and has constituted the part at the rear portion 41 of folded airbag 440 in advance, and therefore, the rear lower 410b of air bag 410 can launch rapidly.
When do not consider above-mentioned this time, drainage portion 434 can be configured to be arranged on the position behind the mediad in a left side and right bulge 415 and 416 zones, that the past and rear make progress.When drainage portion 434 was arranged on this position, the expanding gas that flows into a left side and right bulge 415 and 416 was by drainage, with broadening at the part place of close after expansion portion 414, on above-below direction, therefore, broadening after expansion portion 414 on above-below direction effectively.In addition, drainage portion 434 can be configured to be arranged in a left side and right bulge 415 and 416 zones, the position from the mediad of above-below direction.When drainage portion 434 was set at such position, in after expansion portion 414, the amount that expanding gas G flows into the bottom was bigger than the amount that flows into the top.Therefore, more expanding gas G flows to and has constituted the part at the rear portion 41 of folded airbag 440 in advance.In addition, when not considering this point, drainage portion can be constructed to be arranged in a close left side and right bulge 10 and 16 zones, the position of the central authorities of above-below direction, in addition, and the adjacent portion office on the border of bulge 13 and a left side and right bulge 415 and 416 before also can being configured to be arranged on.In addition, the shape of drainage unit also is not limited to above-mentioned.For example, the frenulum that connects interior all base fabrics 422 and periphery base fabric 426 can be set and constitute the drainage unit.
In addition, although air bag 410 according to this embodiment, the guiding mobile unit GM on passenger side surface 429 is made of the drainage portion 434 (drainage unit) on the folding and air bag 410 of air bag 410, but the air bag with structure that the drainage unit is not set also can be used for air bag 470 for example shown in Figure 47.
Air bag 470 is constructed to circularize part when airbag inflation is finished, this annular element has the basic through hole 471 that penetrates on along in the past top to the above-below direction of bottom, back, and air bag finishes when expanding and heaves by the base fabric 482 and 486 around the through hole, thus through hole 471 closures.In addition, identical with above-mentioned air bag 410, according to air bag 470, expanding forms by following structure with the circumferential body portion 472 of heaving: bulge 473, after expansion portion 474, left bulge 475 and right bulge 476 before being provided with around the through hole 471.
Identical with above-mentioned air bag 410, as shown in figure 48, circumferential body portion 472 is made of interior all base fabrics 482 and periphery base fabric 486.In all base fabrics 482 comprise and be positioned at the first inboard base fabric 483 on the front side, crooked and be positioned at the second inboard base fabric 484 on the rear side, rectangle.Periphery base fabric 486 comprises and is positioned at first outside base fabric 487 on the front side, crooked and is positioned at second outside base fabric 488 on the rear side, that constitute the passenger side surface.
In addition, the back sidepiece that the first inboard base fabric 483 is constructed to have formed from it preceding bulge 473 stretches to the left and right sides, by the inner face sidepiece that has formed a left side and right bulge 475 and 476 is set.First outside base fabric 487 is configured to form from it the front sidepiece both sides stretching, extension to the left and right of preceding bulge 473, by the outside sidepiece that has formed left bulge 475 and right bulge 476 is set.The second inboard base fabric 484 becomes the front face of after expansion portion 474, and second outside base fabric 488 becomes the rear face of after expansion portion 474.In addition, air bag 470 expands when launching, and the back of after expansion portion 474 (second outside base fabric 488) constitutes passenger side surface 489.
In addition, identical with above-mentioned air bag 410, air bag 470 comprises gas inflow entrance 478 and assembly opening 479; And identical with above-mentioned air bag 410, the gas inflow entrance periphery 477 on the inner peripheral surface of air bag 470 is provided with two and strengthens cloth 490,491 and the reinforcement cloth 492 of portion is made in protection.In addition, have deflation hole 480 on the periphery base fabric 486.
Identical with above-mentioned air bag 410, the air bag 470 of present embodiment forms by using suture to make.In addition, identical with above-mentioned air bag 410, the air bag 470 of this embodiment behind folding step in advance, carry out laterally folded step and vertical folding step after, fold.
In folding step in advance, air bag 470 (circumferential body portion 472) is under the non-expansion state, gas inflow entrance 478 is positioned on the bottom surface, interior all base fabrics 472 are inserted into gas inflow entrance 478 tops, the neighbouring part of the upper back of periphery base fabric 476 (the top margin 488a of second outside base fabric 488) is correspondingly thereto arranged, thereby is shakeout symmetrically on a left side and right.
But, in above-mentioned air bag 410, that the top margin 427a of first outside base fabric 427 is formed upward is crooked, to be stretched over the adjacent portion office of central authorities, and according to the air bag 470 of this embodiment, the top margin 87a of first outside base fabric 487 is formed point-blank, to increase the volume (referring to Figure 40 and 48) of after expansion portion 474 tops.That is, compare relative longer with above-mentioned air bag 410 from the distance at the top margin 428a center of gas inflow entrance 478 to second outside base fabrics 428.Therefore, identical with above-mentioned air bag 410, when folded airbag 470, by second outside base fabric 488 (the second inboard base fabric 484) being folded near gas inflow entrance 478 places, and the gauffer by making folded inward simply, to make it fold into through hole 471 be on the left side center, first outside base fabric 487 and right bulge 485 and 486, gas inflow entrance 478 is not positioned at the adjacent portion office of the top margin 488a of second outside base fabric 488 (passenger's guide surface 489), and the neighbouring part that is positioned at the basic central authorities from the above-below direction of passenger side bottom surface 489 downwards.
Therefore, the folded-out gauffer C3 and the gauffer C4 of folded inward are on the part of a left side that comprises first outside base fabric 487 (the first inboard base fabric 483) and right bulge 475 and 476, stretch upwards in front and back, thereby gas inflow entrance 478 is near top margin 488a side, with with the neighbouring part of the upper end 489a on passenger side surface 489 over against, folded-out gauffer C5 is positioned at the adjacent portion office of the base 488b of second outside base fabric 488 (the second inboard base fabric 484) on left and right directions, with gas inflow entrance 478 sides that base 488b is turned back, thereby be folded into folded airbag 495 in advance.When carrying out folding in advance, catch first outside base fabric, 487 top margin 487a to be close to the position behind the contiguous position 488c of the central authorities of left and right directions at the contiguous position 487c and second outside base fabric, the 488 base 488b of the central authorities on the left and right directions, on fore-and-aft direction, draw back and grabbed position 487c and 488c, so that it is separated from each other (Figure 48).In addition, at this moment, preferably make the quilt of second outside base fabric 488 grab the base 488a of position 488c as far as possible, thereby the whole zone of second outside base fabric 488 that constitutes passenger side surface 489 is flattened substantially near second outside base fabric 488.
Identical with above-mentioned air bag 410 (folded airbag 440 in advance), with laterally folded step and the folding aforementioned folded airbag in advance 495 of vertical folding step.Promptly, in laterally folded step, produce gauffer CH roll fold in advance after the gas inflow entrance 478 rear parts 496 of folded airbag 495 along left and right directions, produce the folding 497 one-tenth bellows-shaped of gas inflow entrance 478 the place ahead parts of gauffer CH along left and right directions, in the vertical folding step, along fore-and-aft direction gauffer CV folding part 498 and 499 one-tenth wind-box shapes through a laterally folded left side and right both sides.In the air bag 470 of this embodiment,, formed the guiding mobile unit GM of the after expansion 474 back 474b of portion (passenger side surface 489) when air bag 470 expands expansion by folded airbag 470.
State in the use in addition in the airbag apparatus of air bag 470 of structure, air bag 470 is the annular element that the through hole 471 that the below upwards penetrates is wherein arranged basically, therefore air bag 470 expands when launching, the gas G that flows into from gas inflow entrance 478 is directly to passenger side surface 489 1 side flow, but temporarily flows on left and right directions along air bag 470 (circumferential body portion 472) shape.Therefore, significantly stretch out under the state that is restricted to rear side at it, air bag 470 remarkable broadening on left and right directions, and air bag 470 expand when launching passenger side surface 489 backward moving velocity be restricted.In addition, the neighbouring part of the top margin 488a of the second periphery base fabric 488 on the formation passenger side surface 489 of air bag 470 in folded airbag 495 in advance with gas inflow entrance 478 over against.Therefore, when air bag 470 begins to expand, by the pressure of the expanding gas G that flows into from gas inflow entrance 478, through interior all base fabrics 482, the adjacent portion 489a on the top on passenger side surface 489 earlier by on push away (referring to Figure 49).In addition, by on push away the adjacent portion 489a on the top on passenger side surface 489, laterally folded and vertical folding gauffer is opened rapidly.Therefore, in this airbag apparatus that uses air bag 470, air bag 470 not only on the left and right directions, remarkable expansion broadening on above-below direction also, therefore, when air bag begins to expand expansion, passenger side surface 489 (second outside base fabric 488 and be positioned at a left side and right bulge 475 and 476 sides, formed around second outside base fabric 488 first outside base fabric 487 partly) move (Figure 49) by forming on above-below direction and the left and right directions substantially the plane of broadening to rear view of vehicle.Therefore, even meet proal passenger, also can accurately protect the passenger, and pressure can not acted on one's body the passenger fully when passenger side surface 489.
In addition, in the air bag 410 or 470 of this embodiment, the through hole 411 that single or multiple belows basically upwards penetrate or 471 can partly form by all base fabrics 422 in sewing up or 482 each position.
(the 6th embodiment)
Shown in Figure 54, the air bag of the 4th embodiment can be used for the 6th embodiment.
Air bag 510 has drainage portion 533 near preceding bulge 513 and left and right sides bulge 514 and 515 boundaries, shunt expanding gas on above-below direction.Drainage portion 533 is by inserting reinforcement cloth 532 therebetween, interior all base fabrics 522 and periphery base fabric 526 sewed up ovalisation form.
In addition, shown in Figure 54, air bag is finished when expanding, and the top side that constitutes the after expansion portion 514 of the anterior 528 back 514b of passenger side constitutes the last bulge 535 of protection passenger P head PH, and its bottom side constitutes the following bulge 536 of the chest belly PB of protection passenger P.In addition, air bag is finished when expanding, and preceding bulge 513, left and right sides bulge 515 and 516 are positioned at the vehicle front of bulge 536 down, thereby constitutes as supporting the support pouches 537 of the strut member of bulge 536 down.In addition, because last bulge 535 is positioned at passenger's side wall portion 528 top margin 528a one side, so the area of its back 535a is littler than following bulge 536 back 536a.
According to support pouches 537, the air bag 510 that is contained on the vehicle is finished when expanding, look from the side, left and right sides bulge 515 and 516 top 515c and 516c from after forward to the front lower place bending, preceding bulge 513 is positioned at the 514 top 514c of after expansion portion below, when the after expansion portion 514 that therefore finishes expansion was pressed towards the place ahead, last bulge 535 was not subjected to support pouches 537 to support and forwards move, but bulge 536 is subjected to support pouches 537 supports and can't forwards moves down.
In addition, because circumferential body portion 512 finishes through hole 511 closures when expanding, outside face is from bulge 536 is to the tension force raising of support pouches 537 down, even the back 536a of bulge 536 is pressed towards the place ahead down, back 536a is more difficult recessed, thereby can't forwards move.
The following describes an air bag 510 and be assembled on the vehicle, at first folded airbag 510, make that the bolt 50b on the retainer 50 in the air bag 510 passes assembly opening 519, and folding air bag 510 usefulness infantees 47 (see figure 2)s of can breaking encase, and prevent that air bag 510 from scattering.In addition, when folded airbag, folding air bag after folding step and laterally folded step and vertical folding step in advance.
In folding step in advance, form shown in Figure 51 A and the 51B folded airbag 539 in advance.When folding in advance, air bag 510 (circumferential body portion 512) is in non-expansion state, and by all base fabrics 522 in inserting, gas inflow entrance 518 is positioned on the bottom surface, and periphery base fabric 526 is positioned at gas inflow entrance 518 tops.At this moment, air bag 510 is finished near the upper back 526a (passenger's side wall portion 528 top margin 528a) of periphery base fabric 526 when expanding over against gas inflow entrance 518.In addition, near triangular in shape folding on the second inboard base fabric 524 passenger's side wall portion 528 top margin 528a, near the gas inflow entrance 518 of first outside base fabric 527 about portion fold into that the back left and right symmetrically shakeouts air bag 539 on the gas inflow entrance 518.
Behind folding step in advance, in the shell 54 of packing into, shown in Figure 52 A, 52B, 52C, 53A and 53B, when folding folding in advance air bag 539, form left and right sides gauffer CH with laterally folded step, make with gas inflow entrance 518 to be that the fore-and-aft direction width at center reduces, gauffer CV before and after forming with the vertical folding step then makes the left and right directions width reduce.In this embodiment, roll fold back 539b, the one-tenth wind-box shape installs to gas inflow entrance 518 tops near front 539a is folded into gas inflow entrance 518.In addition, in the vertical folding step, become limit, the left and right sides 539c wind-box shape to install to gas inflow entrance 518 tops near folding into gas inflow entrance 518 with 539d.
In addition,, encase folding air bag 510, prevent that air bag 510 from scattering with the infantees 47 that can break with after the vertical folding step is finished folding of air bag 510 as mentioned above.
In addition, insert assembly opening 57, simultaneously folding air bag 510 is installed to shell 54 bottom wall portion 55 tops from the top bolt 50b.Then, insert jack 56, gas inflow entrance 518 and retainer 50 bottom 50a, and the bolt 50b that stretches out downwards from bottom wall portion 55 is inserted the assembly opening 52d of charging blower 52 flange part 52c from the below the top of charging blower 52 main part 52a.Then, tighten the nut 51 on the bolt 50b that stretches out from charging blower 52 flange part 52c, can folding air bag 510 and charging blower 52 be contained on shell 54 bottom wall portion 55.
Then, side wall portion 50 insertions of shell 54 are contained in the connecting wall portion 57 of instrument carrier panel 1 airbag cover 61 on the vehicle, the latch hook 60 of shell 54 inserts in the lockhole 66 of connecting wall portions 57, and latch hook 60 is locked in the connecting wall portion 57.In addition, on carriage 58, bolt on and 7 can the airbag apparatus M that the passenger uses be contained on the vehicle with nut 58a through mounting plate 6c.
In addition, when installing to airbag apparatus M on the car two, can fit together the airbag cover 61 of the shell 54 that air bag 510 and charging blower 52 are housed earlier, when instrument carrier panel 1 is contained on the vehicle, airbag apparatus M is fixedly connected on the car body 6 then with bolt 7 with instrument carrier panel.
After airbag apparatus M installs on the vehicle, when the air supply opening 52b of charging blower 52 supplies expanding gas G, air bag 510 expands, infantees 47 breaks, airbag cover 61 portion 64 of easily breaking breaks, air bag channel part 62F and 62B open shown in Figure 54 long and two-short dash line, so air bag 510 is opened formed opening from the air bag channel part 62F of airbag cover 61 and 62B and flicked out.In addition, air bag is finished expansion, and unnecessary expanding gas G discharges from deflation hole 520.In addition, label W represents Windshield among Figure 54.
In addition; according to this embodiment airbag apparatus M; air bag 510 is finished the back of expanding and is supported the following bulge 536 that is used to protect passenger P chest belly PB with strut member 537; when meeting passenger P; following bulge 536 is littler than the amount of movement of last bulge 535 back 535a to the amount of movement that vehicle front moves; on the contrary, the amount of movement that moves to vehicle front when last bulge 535 is met passenger P is bigger than following bulge 536, therefore can softly retrain passenger P head PH.
Certainly, following bulge 536 can be protected the chest belly PB of passenger P, and the area of back 536a is more roomy than the back 535a of last bulge 535, even the little chest belly PB that also can accurately protect passenger P of the amount of moving forward.
Therefore, according to the airbag apparatus M of this embodiment, the buffer action of the air bag 510 constraint passenger P heads of the expansion of expanding is stronger than the chest belly of constraint passenger P.
In addition, because the support pouches 537 that the strut member of this embodiment is heaved by expanding gas G air-flow constitutes, therefore expanding gas G can flow into support pouches 537 with the expanding gas of bulge 535 about flowing to and 536, compare with the situation that unexpansive strut bar and so on is used as strut member, be convenient to be provided with strut member 537.
In this embodiment, support pouches 537 is communicated with following bulge 536, therefore can shared inflow bulge 535 and 536 expanding gas G up and down, charging blower 52 that therefore can shared supply gas G prevents that component count from increasing.
In addition, according to this embodiment, part ringwise when air bag 510 is finished and expanded, the through hole 511 that penetrates is up and down wherein arranged, bulge 513 before comprising, left side bulge 515, after expansion portion 514 and right bulge 516, base fabric 522 when air bag is finished expansion around the through hole is heaved, thereby through hole 511 closures, there is its periphery 517 to install on the shell 54 on the preceding bulge 513, for the gas inflow entrance 518 of expanding gas G inflow air bag, preceding bulge 513 and left and right sides bulge 515 and 516 constitute the last bulge 535 of after expansion portions 514 tops and downward following bulge 536 and support pouches 537.
That is, as long as make the air bag 510 of part ringwise, promptly can be made into and comprise bulge 535 up and down and 536 and the air bag 510 of support pouches 537, so it is easy to make.
In addition, according to this annular air-pocket 510, air bag begins to expand wherein through hole 511 when launching, when expanding gas G flows into from gas inflow entrance 518, when through hole 511 is opened, expanding gas G flows into the right and left broadening passenger side wall portion 528 between periphery base fabric 526 and the interior all base fabrics 522, position on left and right directions the broadening close of periphery base fabric 526 with passenger's side wall portion, move to rear view of vehicle, therefore, even the passenger who is seated moves forward, the passenger side that the passenger is broadened on left and right directions by its width also partly is the accurate constraint of wall portion 528 itself or wall portion 528 places, the first periphery base fabric 527, and is not subjected to the effect of focus pressure.
In addition, by all base fabrics 522 each position in sewing up, the single or multiple through holes 511 that penetrate can formed on the inner peripheral surface of interior all base fabrics 522 on air bag 510 above-below directions.

Claims (19)

1. an airbag apparatus comprises folding air bag in the enclosure, wherein:
This air bag has circumferential body portion, and this main part comprises periphery base fabric and interior all base fabrics;
Through hole is opened in the airbag deployment process; And
All base fabrics partly contact with each other in air bag is finished under the state of expansion, thereby make this through hole closed substantially,
Wherein, the tension force of the warp tension ratio periphery base fabric of interior all base fabrics of formation through hole is little.
2. airbag apparatus according to claim 1 further comprises a plurality of bulges that expand when airbag apparatus starts, and wherein, these bulges comprise:
Be provided with the following bulge of gas inflow entrance, this time bulge is connected with shell at its periphery place;
Last bulge is arranged on down the bulge top, thereby is communicated with in its front portion with following bulge; And
After expansion portion is connected with the rear portion of following bulge and the rear portion of last bulge, and through hole is applied on the airbag apparatus left and right directions substantially.
3. airbag apparatus according to claim 2, wherein, air bag is provided with guides the expanding gas that flows into from gas inflow entrance into its inner drainage unit on both sides up and down.
4. airbag apparatus according to claim 2, wherein, the expanding gas that flows into from gas inflow entrance downwards than to the upper reaches many.
5. airbag apparatus according to claim 1 further comprises a plurality of bulges that expand when airbag apparatus starts, wherein:
All base fabrics are arranged on the through hole inner peripheral surface in described,
Described periphery base fabric is arranged on the air bag outer peripheral face, and is relative with interior all base fabrics when air bag is finished expansion, makes that through hole is applied on the above-below direction of airbag apparatus substantially.
6. airbag apparatus according to claim 5, wherein, cylindrical shape bulge inside is provided with deflector near the inflator gas spout, makes the left and right directions deflection to airbag apparatus of the gas that sprays into.
7. airbag apparatus according to claim 5, wherein, the top of cylindrical shape bulge is provided with the top width limited part, is used for the swell increment of confined expansion portion on vehicle-width direction.
8. airbag apparatus according to claim 7 wherein, is provided with the bottom width limited part in air bag after expansion portion, be used for the swell increment of confined expansion portion on vehicle-width direction.
9. airbag apparatus according to claim 5, wherein, through hole is positioned at the instrument carrier panel back.
10. airbag apparatus according to claim 5, wherein, periphery base fabric front is provided with its periphery and shell bonded assembly gas inflow entrance, and this gas inflow entrance is open, and expanding gas is flowed in the air bag; And
During airbag inflation, the lower openings of through hole is moved down into downside before air bag is finished expansion.
11. airbag apparatus according to claim 10, wherein, under the unexpansive state of air bag, folded airbag in advance makes the inflection that makes progress of the following peripheral of through hole,
Make gas inflow entrance be positioned at its bottom surface one side,
By all base fabrics in inserting, on the airbag apparatus left and right directions, launch flatly symmetrically, thereby make the periphery base fabric be positioned at the gas inflow entrance top; And
The folding mode of air bag is, laterally folded air bag forms the left and right directions gauffer, make with the gas inflow entrance to be that the fore-and-aft direction width dimensions at center reduces, the vertical folding air bag forms the fore-and-aft direction gauffer then, make the left and right directions width dimensions reduce, thereby airbag fold is become size in the shell of can packing into.
12. airbag apparatus according to claim 5, wherein, periphery base fabric front is provided with its periphery and shell bonded assembly gas inflow entrance, and this gas inflow entrance is open, makes the gas inflow entrance of expanding gas inflow air bag, and
The guiding mobile unit on the protection passenger's of periphery base fabric passenger side surface is vertically an aspect roughly, at the broadening up and down and on the left and right directions of airbag apparatus, and can move to rear view of vehicle when airbag inflation.
13. airbag apparatus according to claim 12, the guiding mobile unit is formed by airbag fold, wherein:
Air bag is to form with laterally folded and vertical folding process thereafter is folding through folding in advance, and
Under the unexpansive state of air bag, the bottom surface of Zhe Die air bag is provided with gas inflow entrance in advance, interior all base fabrics are inserted in the gas inflow entrance top, the periphery base fabric is established thereon near the upper back, form the shape that basic left and right symmetrically launches flatly, relative near the top on the passenger side surface of periphery base fabric with gas inflow entrance.
14. airbag apparatus according to claim 12, wherein, the guiding mobile unit is made of the drainage unit of the expanding gas that is arranged in the air bag and can drainage flows into from gas inflow entrance, and
The drainage unit is positioned at the rear of the air bag front portion of gas inflow entrance one side, and energy drainage expanding gas flows it along the vertical direction.
15. airbag apparatus according to claim 1 wherein, when airbag inflation launches, launches to rear view of vehicle by means of the expanding gas that flows into from gas inflow entrance.
16. airbag apparatus according to claim 1, wherein, this airbag apparatus is arranged on the passenger the place ahead that is sitting on the seat.
17. airbag apparatus according to claim 5; wherein, this airbag apparatus is for the protection passenger, when vehicle collision; charging blower makes air bag launch to after expansion from the Windshield of instrument carrier panel top according to the signal enabling that sends from acceleration pick-up with the gas that generates.
18. airbag apparatus according to claim 1, wherein, this airbag apparatus is contained on the instrument carrier panel.
19. airbag apparatus according to claim 1, wherein,
The periphery base fabric of this air bag and the shape of interior all base fabrics are basic identical, and they are stitched together mutually,
This air bag also has all base fabrics (228) and front periphery base fabric (226) in the front, and the end side seam of they and periphery base fabric and interior all base fabrics is in the same place,
Wherein, this air bag comprises first bulge (230) and second bulge (231) and the 3rd bulge (232) at least, this first bulge (230) and second bulge (231) are formed between periphery base fabric and the interior all base fabrics, the 3rd bulge (232) is formed in the front between all base fabrics and front periphery base fabric
When airbag inflation, at first gas flows into first bulge and second bulge, and first bulge is expanded and relative with second bulge, and gas flows into the 3rd bulge through first bulge and second bulge then.
CNB2004101031677A 2004-12-31 2004-12-31 Airbag system Expired - Fee Related CN100404323C (en)

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CN107745692B (en) * 2017-10-12 2023-12-01 延锋汽车智能安全系统有限责任公司 Safety airbag with wrap angle connection
CN109001411B (en) * 2018-10-08 2020-12-11 山东中衡环境检测有限公司 Accurate river water quality underwater monitoring device
CN109187905B (en) * 2018-10-08 2020-12-25 杭州诺普泰克仪器仪表有限公司 River course quality of water risk on-line monitoring device
CN109342677B (en) * 2018-10-08 2021-01-26 南京师范大学 Accurate river course water quality monitoring equipment
CN109001412B (en) * 2018-10-08 2021-01-05 山东久力工贸集团有限公司 River course quality of water is monitoring devices under water
CN109001413B (en) * 2018-10-08 2020-12-18 赵春华 River water quality underwater on-line monitoring device
JP7243557B2 (en) * 2018-10-22 2023-03-22 豊田合成株式会社 passenger protection device
JP7215453B2 (en) * 2020-03-31 2023-01-31 豊田合成株式会社 Airbag device for driver's seat

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