CN104442680B - Air bag device - Google Patents

Abstract

An air bag device comprises an air bag which expands through reception of expanding gas and an inflator which is roughly shaped as a cylinder. The inflator is used for supplying the expanding gas to the air bag. The air bag comprises an air bag body and an reinforcement cloth arranged in the air bag body, the reinforcement cloth is arranged to cover the outer periphery of the inflator, the reinforcement cloth is formed by at least folding a sheet-shaped reinforcement cloth in two, and a folding line used for folding the reinforcement cloth is used as a reinforcement folding line and is separated from the inflator; a front face part and a rear face part are parts, extending to the two sides of the reinforcement cloth from the reinforcement folding line, of the reinforcement cloth; a separating part is used for separating the expanding gas and therefore the expanding gas is allowed to flow out, the separating part is arranged on main body side edges of parts, extending beyond the reinforcement folding line, of the front face part and the rear face part; gap side edges of the parts, extending beyond the reinforcement folding line, of the front face part and the rear face par are separated from the main body expansion part of the air bag, and the gap side edges are connected with each other.

Description

Airbag apparatus

Technical field

The present invention relates to a kind of airbag apparatus, it is arranged on automobile, and be suitable to from generally cylindrical aerator receive Expanding gas and the air bag that expands.

Background technology

Generally, the air bag for being connected with generally cylindrical aerator has airbag body and is arranged on inside airbag body Strengthen cloth (for example, with reference to patent documentation 1).Airbag body has：Main body bulge, it is swollen by receiving expanding gas wherein It is swollen, so that face wall is separated from one another with back face wall；And the connection oral area of tubulose, it is connected with aerator, make expanding gas from Aerator flows into main body bulge.Connection oral area has vertical pipe portion and horizontal pipe portion, the vertical pipe portion and main body bulge phase Connection, to be approximately perpendicular to the connection oral area, the horizontal pipe portion is connected with vertical pipe portion, to be approximately perpendicular to the vertical duct Portion, and, by the way that aerator is inserted, horizontal pipe portion is also connected with aerator, the connection oral area is with L-type bending peace It is mounted on automobile.Arrange in the inner circumferential side of connection oral area and strengthen cloth, to cover the outer of aerator between face wall and back face wall Week.The reinforcement cloth is formed by following manner：Doubling lamellar strengthens cloth material, afterwards, its predetermined circumference is sutured, to expand to main body Portion guides expanding gas.

[patent documentation 1] JP 2011-201518 A ([0041] section, Figure 14 and Figure 18)

However, in this conventional balloon device, the reinforcement cloth of air bag is obtained by following manner：In the horizontal stroke of connection oral area The upper edge being spaced apart with main body bulge in pipe portion, forms fold line, and doubling lamellar strengthens cloth material, afterwards, vertical Suture zone is set near aerator leading edge separately in pipe portion.

In addition, by vertical pipe portion, expanding gas are provided to main body bulge from the horizontal pipe portion of connection oral area, from filling Transversely pipe portion is flowed axially through to contact the leading edge of vertical pipe portion the expanding gas of gas device, afterwards the vertically axial direction of pipe portion Flow to main body bulge.However, in the conventional balloon device, strengthen cloth suture zone be suitable to be arranged in vertical pipe portion with it is swollen The edge of flatulence body contact.

Therefore, the suture zone presence for strengthening cloth is destroyed and is caused risk of breakage because of the high-temperature expansion gas, thus is drawn Send out the temperature resistance problem for strengthening cloth.

So as to, it is to solve problem above, it is an object of the invention to provide a kind of head portion protecting air bag apparatus, wherein, can To simply increase the thermostability of the reinforcement cloth being arranged in air bag connecting portion.

The content of the invention

(1) according to an aspect of the present invention, a kind of airbag apparatus include：Air bag, it is applied to by receiving swollen wherein Flatulence body and expand；And generally cylindrical aerator, it is used to provide expanding gas to air bag.The air bag includes air bag sheet Body and the reinforcement cloth being arranged on inside airbag body.The airbag body includes：Main body bulge, by receiving swollen wherein Flatulence body and expand so that the face wall of airbag body is separated from one another with back face wall；And tubulose connection oral area, itself and aerator It is connected so that expanding gas flow into main body bulge from aerator.Connection oral area includes：Vertical pipe portion, it expands with main body Portion is connected, to be approximately perpendicular to main body bulge；And horizontal pipe portion, it is connected with vertical pipe portion, to be approximately perpendicular to Vertical pipe portion, and, by the way that aerator is inserted in horizontal pipe portion, make horizontal pipe portion also be connected with aerator, connect oral area It is arranged on automobile with L-type bending state.Strengthen cloth to be set to cover the periphery of aerator in the inner circumferential side of connection oral area.Should add Strong cloth is formed by being at least folded to form lamellar reinforcement cloth material.It is spaced apart with aerator in the vertical pipe portion of connection oral area Edge, generally vertically the axial direction of pipe portion, is provided for folding the fold line for strengthening cloth material, used as reinforcement fold line.Front Portion and back part are to strengthen being extended to from reinforcement fold line in cloth strengthening the part of cloth both sides, and are separately positioned on connection oral area The inner circumferential side of face wall and back face wall.Separated part is used to separate expanding gas to allow expanding gas to flow out, the separated part arrangement In the main body side edge from face portion and back part that fold line extends is strengthened.Extend from reinforcement fold line With main body bulge separately, the interval lateral edges are coupled each other the interval lateral edges of face portion and back part.

According to the airbag apparatus of the present embodiment, in the vertical pipe portion of connection oral area with the edge at aerator interval and Approximately along the axial direction of vertical pipe portion, the reinforcement fold line for strengthening cloth material for doubling is formed, so as to cloth will be strengthened company is arranged on The inside of interface portion.That is, the expanding gas discharged from aerator connect in oral area along the inflow axially forward of horizontal pipe portion, with And, this flowing is smooth transfer, because even expanding gas are contacted with cloth is strengthened, this region does not suture section and only adds Strong fold line, therefore the rupture for suturing section itself will not occur.Therefore, expanding gas can be by separated part to main body bulge stream It is dynamic, thus improve the thermostability for strengthening cloth.

On the other hand, in cloth is strengthened, it is possible to reduce the caused infringement because of the high-temperature expansion gas, this is because, although By suture etc., the face portion extended from reinforcement fold line and the interval side being spaced apart with main body bulge in back part Edge is coupled each other, and the expanding gas perpendicular contact such as in fold line is strengthened will not occur in the region, and, additionally, swollen Flatulence body flows to main body bulge by separated part from fold line is strengthened, so discharge pressure also is difficult to consumingly put on this Place.

Additionally, strengthen the reinforcement fold line that cloth has the reinforcement cloth material for being arranged only at precalculated position, and without additionally making With being used to improve the part of its thermostability, thus, strengthen cloth and obtain simple construction.

Therefore, according to the airbag apparatus of the present embodiment, the reinforcement cloth being arranged in air bag connection oral area can be simply increased Thermostability.

(2) in the airbag apparatus according to construction (1), first pass through along the fold line doubling for being approximately perpendicular to reinforcement fold line Strengthen cloth material, to form duplex, afterwards, strengthen fold line by arranging on duplex, so as to form reinforcement cloth.

According to (2) constructed above, because strengthen cloth being made up of the duplex obtained from reinforcement cloth material, even if expanding gas are damaged Do harm to positioned at the reinforcement cloth material for strengthening cloth inner circumferential side, in the reinforcement cloth material for strengthening cloth outer circumferential side the face wall of airbag body can have been protected And back face wall so as to do not damaged by expanding gas, thus further improve the thermostability for strengthening cloth.

(3) according to construction (1) or (2) airbag apparatus in, strengthen cloth face portion and back part have it is substantially rectangular Tabular, and be set to exceed vertical pipe portion together with fold line is strengthened, extend to main body bulge.Strengthen cloth to further include： Transverse pipe covering part, it is arranged in the horizontal pipe portion of connection oral area；Vertical duct covering part, it is arranged in the vertical of connection oral area In pipe portion；Extension, it is arranged in the main body bulge side for strengthening cloth；And slit, it is arranged on transverse pipe covering part and prolongs Between extending portion, and from wherein with strengthen extending to the vicinity of vertical duct covering part at fold line ora terminalis separately.By will just The outer peripheral edge faced the wall and meditated and the outer peripheral edge of back face wall are sutured to each other, and form connection oral area.Outer peripheral edge and back face wall when face wall Outer peripheral edge when being sutured to each other, by the way that the interval lateral edges of the face portion and back part of strengthening cloth are sutured to each other, meanwhile, will be narrow The periphery of seam is sutured to each other, and will strengthen cloth with this and is arranged on inside connection oral area.

According to (3) constructed above, because, when the outer peripheral edge of the face wall and back face wall that form connection oral area is sutured to each other When, by the way that the interval lateral edges of face portion and back part are sutured to each other, meanwhile, the periphery of slit is sutured to each other so that by Strengthen the inside that cloth material is arranged on connection oral area of strengthening of cloth composition, thus it can be prevented that the position deviation for strengthening cloth.

In addition, because strengthening cloth has predetermined slit, when aerator inserts the horizontal pipe portion of connection oral area, by narrow Seam, the transverse pipe covering part for strengthening cloth may move, be sewed with the main body dilation of extension from.Therefore, it can steady Ground enters to be about to the operation that aerator is connected to connection oral area, and the operation includes the installation operation of attachment means (such as folder), with Aerator is connected to into connection oral area.

(4) according in the airbag apparatus of any one in construction (1) to (3), inner tube is arranged on reinforcement cloth and air bag sheet Between body, to guide the vertical pipe portion from connection oral area to flow into the expanding gas of main body bulge, by this way so that expansion Gas is being approximately perpendicular to vertical pipe portion axially direction top set into two strands for being separated from each other.By the pipe of at least doubling lamellar Cloth material, formed inner tube, inner tube is arranged as, in inner tube for being divided into expanding gas in two strands of flow path, with even On interface portion edge separately, arrange for the fold line of folded tube cloth material, as pipe fold line, and, from pipe in inner tube The outer circumferential side for being partially disposed on reinforcement cloth that fold line extends to both sides, therefore, respectively become the front for being arranged on airbag body The face portion of wall inner circumferential side and it is arranged on the back part of back face wall inner circumferential side.

According to above-mentioned construction (4), though the main body bulge of airbag body be set to it is swollen by supplying in the longitudinal direction Flatulence body and expand, inner tube allow expanding gas be smoothly introduced into main body bulge, thus make main body bulge expand.In addition, Inner tube itself be also configured as wherein will from connection oral area vertical pipe portion receive expanding gas region (i.e. be connected oral area phase The edge at interval) it is not provided with suturing section, but pipe fold line is disposed with, fold the pipe cloth for formed inner tube along the pipe fold line Material.Therefore, it can, by only pipe fold line being arranged in into the so simple structure arrangement in precalculated position, improve the heat-resisting of inner tube Property.

In the airbag apparatus according to construction (4), inner tube includes：Inlet side, it is arranged on the inside of connection oral area；With And two pipe-type outlet sidepieces, it, with forked branch, and is arranged at the position of pipe fold line from the end of inlet side.Prolong Stretch pipe portion and be sewn at least one outlet sides, to guide expanding gas G.Guan Bucai is made up of duplex, and the duplex includes The inner peripheral portion for being arranged in inner tube inner circumferential side and the peripheral part for being arranged in the inner peripheral portion outer circumferential side, and, extend pipe portion and be seamed to Peripheral part, and, the suture section for having sutured is covered by inner peripheral portion.

When extension pipe portion is sutured with the outlet sides of inner tube and is connected, suture section is covered by the inner peripheral portion of bimetallic tube cloth material Lid, which thereby enhances the thermostability of suture section.

Certainly, inner tube itself is also made up of duplex, and the duplex is obtained by Guan Bucai, and the duplex prolongs from inlet side Outlet sides are extended, the thermostability of inner tube is thus further increased.

Description of the drawings

Fig. 1 is the vehicle front-viewing figure from the observation of automotive interior side, wherein being provided with head according to an embodiment of the invention Protect airbag apparatus in portion；

Fig. 2 is triggering according to the schematic amplification front view near aerator during the present embodiment airbag apparatus；

Fig. 3 is the profile along Fig. 2 section lines III-III, illustrates the airbag apparatus according to the present embodiment；

Fig. 4 is the profile along Fig. 2 section lines IV-IV, illustrates the airbag apparatus according to the present embodiment；

Fig. 5 is the front view for illustrating the air bag used according to the present embodiment airbag apparatus；

Fig. 6 is the front view for illustrating the component parts according to the present embodiment air bag；

Fig. 7 A to Fig. 7 C illustrate the manufacturing step of the reinforcement cloth according to used by the present embodiment air bag；

Fig. 8 A to Fig. 8 D illustrate the manufacturing step of the inner tube according to used by the present embodiment air bag；

Fig. 9 A and Fig. 9 B illustrates the manufacture process according to the present embodiment air bag；

Figure 10 A to Figure 10 C illustrate the manufacture process according to the present embodiment air bag after Fig. 9 manufacture processes；And

Figure 11 A to Figure 11 D diagrams by by aerator etc. be connected according to the present embodiment air bag and manufacturing can install air bag The process of body, the airbag body is mountable in automobile.

Specific embodiment

With reference now to accompanying drawing, embodiments of the invention are described.As shown in figure 1, according to the airbag apparatus of the present embodiment For head portion protecting air bag apparatus S, and with head-protecting airbag (also referred to as curtain type gas bag, hereinafter referred to as air bag) 30, fill Gas device 20 (it is used to discharge expanding gas), airbag cover 11 and mounting bracket 13.The air bag 30 is folded into and is stored in automobile V Inner side, in the top edge WU of the window being arranged side by side on fore-and-aft direction positioned at the side of front stall and back seat (side window) W1 and W2, Coverage extends to the top of rear pillar RP from the lower limb of front pillar FP through center pillar CP tops.

As shown in Figures 2 to 4, aerator 20 is column type, and it has generally cylindrical and inserts in connection oral area 33, following article Described, the connection oral area 33 is arranged in air bag 30 to receive expanding gas G wherein, so as to be connected with air bag 30.Inflation Device 20 includes：Main body 21 containing chemical substance and igniter, the chemical substance burns to produce expanding gas G；And by Bubbler 22 made by metallic plate.Main body 21 is clamped by bubbler 22 in its close end 21a, and with multiple gases Outlet 21c, for discharging expanding gas at its small diameter distal portion 21b.Bubbler 22 is arranged as, and makes to be discharged from gas The expanding gas G of mouth 21c is arranged as towards the flow export 22a of distal portion 21b end face flowing out from it, and is located at downside from it Flow export 22b flows out, and, at the bottom of its proximally-located portion 21a side, bubbler 22 has mounting bracket portion 22c, is used for Aerator 20 is attached to into the inner panel 2 of automobile V vehicle bodies 1.Installing hole 22d is formed with mounting bracket portion 22c, by the installing hole 22d insertions are applied to the bolt 24 for being attached to inner panel 2.Additionally, mounting bracket portion 22c is fixed by using bolt 24, The adjacent upper part of center pillar CP, aerator 20 is installed and fixed to the inner panel 2 of roof cant rail RR, while by the following of headliner 5 Edge 5a is covered (see Fig. 1).In addition, in the (described below) of horizontal pipe portion 35 of the insertion connection oral area 33 of aerator 20, and, pass through As the folder 26 of attachment means, horizontal pipe portion 35 is extruded to clamp aerator 20, so as to by aerator 20 and horizontal pipe portion 35 It is connected.

Additionally, the scheduled control device by detecting automobile V side collisions, triggers aerator 20.

Each mounting bracket 13 is installed and fixed the (described below) of installation portion 60 of air bag 30 to interior by installation bolt 14 Plate 2.Each installation bolt 14 is fastened to being provided with each screwed hole of nut etc. of inner panel 2.

As shown in figure 1, airbag cover 11 by the front post ornament 4 being arranged on front pillar FP lower limb 4a and be arranged in car The lower limb 5a of the headliner 5 on top beam of laterally RR is constituted.

As shown in Figure 1 and Figure 5, air bag 30 has：Airbag body 31, it is applied to expansion to cover window W1 and W2；Arrange Inner tube 63 inside airbag body 31；And reinforcement cloth 81.

As shown in Fig. 1, Fig. 5 and Figure 11, airbag body 31 is by from the reception expanding gas G of aerator 20 from rugosity State is launched, and afterwards, airbag body 31 expands to cover window W1 and window W2, center pillar CP and the in-car side of rear pillar RP.If Fig. 2 is to figure Shown in 5, airbag body 31 has：Gas inflow part 32, the gas inflow part 32 receives expanding gas G, to promote as front The car medial wall 32a of wall is separated from one another with the car lateral wall 32b as back face wall, wherein, car medial wall 32a and car lateral wall 32b is relative to each other；And non-inflow part 45, wherein car medial wall 32a and car lateral wall 32b keeps being bonded to each other, so as to not permit Perhaps expanding gas G is flowed into.

Gas inflow part 32 has：Main body bulge 37, it covers the car of window W1 and window W2, center pillar CP and rear pillar RP Inner side；And tubulose connection oral area 33, it is connected with aerator 20, so that expanding gas G is swollen from the inflow of aerator 20 main body In swollen portion 37.

Connection oral area 33 is set to from the fore-and-aft direction middle part of main body bulge 37 upwardly.Connection oral area 33 has： Vertical pipe portion 34, it is connected with main body bulge 37, and the vertical pipe portion 34 is from the projection of main body bulge 37 being approximately perpendicular to Main body bulge 37；And horizontal pipe portion 35, it is connected with vertical pipe portion 34, and the horizontal pipe portion 35 is from the upper of vertical pipe portion 34 Hold to rearward projection to be approximately perpendicular to vertical pipe portion 34, also, by the opening 35c insertion inflations from the rear end of horizontal pipe portion 35 Device 20, makes the horizontal pipe portion 35 also be connected with aerator 20.Therefore, connect oral area 33 and be formed as L-shaped, and with this bending state In automobile V.

Additionally, main body bulge 37 has：Front bulge 39, arranges the front bulge 39 to cover window after expansion is completed The in-car side of W1；Afterwards bulge 40, arrange the rear bulge 40 to cover the in-car side of window W2；And feed path portion 38, its The side of top edge 31 of airbag body 31 is arranged on, to have tubulose along the longitudinal direction.Additionally, feed path portion 38 is in its front and back It is connected with oral area 33 is connected to center, therefore, using inner tube 63, feed path portion 38 becomes suitable for from connection oral area 33 Forward bulge 39 and rear bulge 40 supply the part of expanding gas G.

Further, according to the present embodiment, airbag body 31 is made up of three parts as its component, i.e.,：Non- inflow part 45 (described below) of installation portion 60；Connection oral area cloth material 52 (see Fig. 2, Fig. 3, Fig. 6, Figure 10 A and Figure 10 B), its company of composition The car medial wall 32a and car lateral wall 32b of interface portion 33；And two-layer weave portion 47, it is constituted for main body bulge 37 Region, formed by two-layer weave.The two-layer weave portion 47 passes through two-layer weave shape with yarn (such as polyamide or polyester) Into, and with the bag body 48 of gas inflow part 32 is constituted, expanded by wherein receiving expanding gas G, to cause in-car Side wall 32a is separated from one another with car lateral wall 32b；And closure 49, it surrounds gas inflow part 32 and arranges.Connection oral area cloth material 52 (52I, 52O) and installation portion 60 (being still described below), strengthen cloth material 90, Guan Bucai 70 and extension cloth material 78 by knitting Make fabric (such as polyamide) formation.

Non- inflow part 45 is made up of circumference 46 and installation portion 60.Circumference 46 is formed around gas inflow part 32, And, the top edge 46a of circumference 46 is arranged as the top edge 31a towards airbag body 31, and top edge 46a is by two-layer weave The closure 49 and capsule in portion 47 (it is formed by two-layer weave) forms suturing part 55 and constitutes, by connecting oral area cloth material 52 Form the capsule and form suturing part 55 Deng suturing integral.

In addition, closure 49 on it has towards the top edge 31a sides of airbag body 31 front side closure 49a and on Rear side closure 49b, the separating part 50 as peristome is provided therebetween.As shown in Fig. 3 and Fig. 9, in separating part 50 Peripheral region, by connect suturing part 57, by connection oral area cloth material 52 (52I, 52O) extension 52c be sutured in in-car respectively Side wall 32a and car lateral wall 32b.

As shown in Fig. 2, Fig. 3 and Fig. 9, connecting oral area cloth material 52I, 52O is used to form the car medial wall of connection oral area 33 32a and car lateral wall 32b, and, each connection oral area cloth material has：Suitably form vertical pipe section 52a of vertical pipe portion 34； Suitably form horizontal pipe section 52b of horizontal pipe portion 35；And extension 52c, it is sewn on main body bulge 37, that is, separates In portion 50.Between horizontal pipe section 52b and extension 52c, the slit 52d of forward direction extension, slit 52d cloth are formed in It is set to the opening 35c towards horizontal pipe portion 35.

Additionally, the leading edge suturing part 55a and back edge suturing part 55b of suturing part 55 are formed by capsule, by separating part 50 Together with being sutured to each other with the car medial wall 32a and car lateral wall 32b of connection oral area 33.Leading edge suturing part 55a is from upper front side Closure 49a extends back, and together with car medial wall 32a is sutured to each other with car lateral wall 32b, it is located at such area Domain：Through separating part 50, from the leading edge 34a of the vertical pipe portion 34 of connection oral area 33 top edge of horizontal pipe portion 35 is extended to 35a (see Fig. 5).Back edge suturing part 55b extends forward from upper rear side closure 49b, and by car medial wall 32a and car lateral wall 32b is sutured to each other together, and it is located at such region：Through separating part 50, from after the vertical pipe portion 34 of connection oral area 33 Edge 34b extends to the lower limb 35b (i.e. the periphery of slit 52d) of horizontal pipe portion 35, referring to Fig. 9.

On the other hand, according to the present embodiment, capsule forms the leading edge suturing part 55a and back edge suturing part of suturing part 55 55b will also strengthen cloth 81 and inner tube 63 is sutured to each other.

As shown in figure 5, multiple (being in the present embodiment six) installation portions 60 are formed, with from the top edge of circumference 46 Upwardly, the installation portion 60 is located at the top edge 31a of airbag body 31 46a.Each installation portion 60 is formed with installing hole 60a, Installing hole 60a is used to insert installation bolt 14.As mentioned above, it is adaptable to which the mounting bracket 13 for being attached to the inner panel 2 of vehicle body 1 is consolidated Due to each installation portion 60, and, the installation bolt 14 through each installing hole 60a insertions is anchored on each screwed hole of inner panel 2, knot Really, each installation portion 60 is fixed to into inner panel 2.

The cloth material suture of chorista will be formed as by Woven fabric (such as polyamide), so as to make the installation for being located at front end Portion 60F is formed in the leading edge 46c of the circumference 46 that airbag body 31 is formed at by two-layer weave.Additionally, installation portion 60F The adjacent bottom portions of front pillar FP are fixed on, and are configured to so that after air bag 30 completes expansion, stronger tension force is applied to and air bag On 30 lower limb 31b connected line, especially, be applied to the installation portion 60F that is spaced apart from front pillar FP and installation portion 60 (60B, See Fig. 1) on, thus enhance air bag 30 and limit ability of the passenger to car medial displacement.

In addition, installation portion 60S is set, positioned at from front side number second, to be seamed to the cloth material for installation portion 60F.

Between the car medial wall 32a and car lateral wall 32b being made up of connection oral area cloth material 52I, 52O, in connection oral area On 33 inner circumferential side, arrange and strengthen cloth 81, to cover the periphery of aerator 20.

As shown in Figure 6 and Figure 7, using the substantially rectangular tabular of two panels and for the reinforcement cloth material 90 of piece shape, overlapped each other Duplex 92 is formed, and, original half is made by folded double body 92, formed and strengthen cloth 81.By folded double Body 92 and produce fold line be set to strengthen fold line 91, positioned at connection oral area 33 vertical pipe portion 34 in between aerator 20 The edge for separating, i.e., positioned at its leading edge 34a, the reinforcement fold line 91 is along the above-below direction as the axial direction of vertical pipe portion 34 VD Arrange, as shown in Figure 2 and Figure 5.On the other hand, as shown in figures 7 a and 7b, duplex 92 has laterally long generally rectangular plate Shape, also, along the overlap fold line 93 with the reinforcement perpendicular setting of fold line 91, the substantially rectangular tabular of large-size is added Strong cloth material 90 doubling, so as to form the duplex 92.In addition, according to the present embodiment, as shown in Fig. 7 A to Fig. 7 C, folding along overlapping Line 93 and reinforcement fold line 91, twice doubling strengthens cloth material 90, so as to be formed cloth 81 is strengthened.

As shown in Fig. 2, Fig. 3 and Fig. 7, cloth 81 is strengthened in adjustment, so as to wherein extend to both sides from reinforcement fold line 91 Part respectively becomes in-car sidepiece 81a (as its face portion) and car lateral part 81b (as back part), is separately positioned on connection In oral area 33 as face wall car medial wall 32a (connection oral area cloth material 52I) inner circumferential side and be arranged on as back face wall Car lateral wall 32b (connection oral area cloth material 52O) inner circumferential side.

Additionally, strengthen cloth 81 being configured to, separated part 81d is used to separate expanding gas G to allow expanding gas G to flow out main body Bulge 37, separated part 81d arrangement is in the car on main body lateral edges (lower limb) 81c of sidepiece 81a and car lateral part 81b, The main body lateral edges (lower limb) 81c stretches out and is arranged towards main body bulge 37 from fold line 91 is strengthened.In addition, at interval Lateral edges 81e sides (top edge 35a of the side to the horizontal pipe portion 35 of connection oral area 33), arrange top edge suturing part 87, So that together with in-car sidepiece 81a is sutured to each other with interval lateral edges (top edge) 81e of car lateral part 81b, the interval side Edge 81e extends and with main body bulge 37 separately from fold line 91 is strengthened.According to the present embodiment, the structure of top edge suturing part 87 Into the leading edge suturing part 55a for being sutured to each other connection oral area cloth material 52I and 52O, therefore, strengthen cloth 81 and be arranged so that interval Lateral edges (top edge) 81e respectively be connected oral area cloth material 52I and 52O and be stitched together.

In addition, according to the present embodiment, the in-car sidepiece 81a and car lateral part 81b for strengthening cloth 81 has substantially rectangular tabular, And be set to extend to main body bulge 37 beyond vertical pipe portion 34 together with fold line 91 is strengthened.Additionally, strengthen cloth 81 having Have：Transverse pipe covering part 84, it is arranged in the horizontal pipe portion 35 of connection oral area 33；Vertical duct covering part 83, its company of being arranged in In the vertical pipe portion 34 of interface portion 33；And extension 85, it is arranged towards main body bulge 37.Slit 86 is formed in laterally Between pipe covering part 84 and extension 85, to extend forward from ora terminalis (back edge) 81f with reinforcement fold line 91 separately.It is narrow Seam 86 is set to extend to region adjacent with back edge 34b of vertical pipe portion 34 in vertical duct covering part 83.

Further, by arranging back edge suturing part 88, by in-car sidepiece 81a and car lateral part 81b around slit 86 It is sutured to each other together.According to the present embodiment, back edge suturing part 88 is configured to be sutured to each other connection oral area cloth material 52I, 52O Back edge suturing part 55b, therefore, will strengthen cloth 81 be arranged so that the periphery of slit 86 respectively be connected oral area cloth material 52I, 52O is stitched together.

That is, as described above, when outside connection oral area cloth material 52I (as the car medial wall 32a of connection oral area 33) (suturing part 55 is formed when periphery is sutured to each other with the outer peripheral edge for being connected oral area cloth material 52O (as car lateral wall 32b) in suture capsule When), the interval lateral edges 81e of in-car sidepiece 81a and car lateral part 81b for strengthening cloth 81 is sutured to each other, while by slit 86 Periphery be sutured to each other, thereby so that strengthen cloth 81 be arranged on connection oral area 33 inside.

As shown in Figures 2 to 5, inner tube 63 is arranged between reinforcement cloth 81 and airbag body 31, and inner tube 63 guides swollen Flatulence body G is flowed in main body bulge 37 from the vertical pipe portion 34 of connection oral area 33, and by this way, expanding gas G is branched into Two strands for being separated from each other in the longitudinal direction, to be approximately perpendicular to the axial VD of vertical pipe portion 34, afterwards, expanding gas G supplies To front bulge 39 and rear bulge 40.

As shown in Fig. 5, Fig. 6 and Fig. 8, along pipe fold line 75, the duplex that two panels Guan Bucai 70 is overlapped each other 74 pairs Roll over, thereby formed inner tube 63.Pipe fold line 75 is arranged in and is connected on the lower limb 63c that is spaced apart of oral area 33, be used for will be swollen Flatulence body G is divided in the flow path of inner tube 63 for two strands.Additionally, inner tube 63 is configured to so as to prolong to both sides from pipe fold line 75 Stretch be partially disposed on strengthen cloth 81 outer circumferential side, therefore, respectively become in-car sidepiece 63a (as the face portion of inner tube 63) with And car lateral part 63b (as the back part of inner tube 63), be separately positioned on airbag body 31 car medial wall 32a inner circumferential sides and Car lateral wall 32b inner circumferential sides.

Inner tube 63 has：Inlet side 64, it is arranged on the inside of connection oral area 33；And two outlet sides 65,66, It is in along the longitudinal direction Y-shaped branch from the lower end 64a of inlet side 64, and is arranged in the position of pipe fold line 75, i.e. It is arranged in the position in feed path portion 38.

As shown in figure 8, the fold line 73 of above-below direction extension is formed in by the centre in the fore-and-aft directions of Guan Bucai 70, Will the doublings of Guan Bucai 70 with bar shaped (elongated in fore-and-aft direction), duplex 74 is consequently formed, afterwards, by duplex 74 The centre of above-below direction is formed in the pipe fold line 75 of fore-and-aft direction extension, and the doubling duplex 74 thereby, is formed according to this The inner tube 63 of embodiment.Therefore, it is made up of duplex 74 according to the inner tube 63 of the present embodiment, the duplex includes：Inner peripheral portion 71, It is arranged in the inner circumferential side of inner tube 63；And peripheral part 72, when by forming pipe 75 doubling of fold line, the peripheral part 72 is arranged In the outer circumferential side of inner peripheral portion 71.

On the other hand, Guan Bucai 70 has：Vertical pipe section 70a and horizontal pipe section 70b, its profile is corresponded respectively to The vertical pipe portion 34 and horizontal pipe portion 35 of connection oral area 33, when inner tube 63 is formed with, inlet side 64 is arranged in the connector In portion 33；Feed path section 70c, its profile is corresponding to the feed path portion 38 for being disposed with outlet sides 65,66；And it is additional Slit 70d, it corresponds to slit 52d and slit 86.

Additionally, according to the present embodiment, the extension pipe portion 77 for guiding expanding gas G backward is sutured in the outlet of inner tube 63 Sidepiece 66.

Extend pipe portion 77 to be formed by following manner：In the above-below direction centre for extending pipe portion cloth material 78, along front and back To the fold line 79 for extending, the extension pipe portion cloth material 78 of doubling rectangular plate-like, additionally, will be positioned at the leading edge of extension pipe portion cloth material 78 Suture section 78a, be placed on before the duplex 74 of formed inner tube 63 inner circumferential of suture section 72a for being located at the rear edge of peripheral part 72 On side, suture section 72a and suture section 78a are sutured to each other afterwards.It is double to be formed when making Guan Bucai 70 fold along fold line 73 During layer body 74, adjustment extends suture section 78a of pipe portion 77 so that its inner circumferential side is covered by inner peripheral portion 71.

When doubling is carried out along pipe fold line 75 in the state of extension pipe portion 77 is sutured, from pipe fold line 75 in inner tube 63 The part extended to both sides respectively becomes in-car sidepiece 63a and car lateral part 63b, and, form suturing part 55 using capsule Leading edge suturing part 55a and back edge suturing part 55b, by in-car sidepiece 63a and car lateral part 63b and reinforcement cloth 81 and connector Portion cloth material 52 is stitched together.

The manufacture process of the air bag 30 according to the present embodiment is described below.First, two-layer weave portion 47 is formed, and As shown in fig. 9 a and fig. 9b, connection suturing part 57 is set using stitching thread 95, so as to oral area cloth material will be connected in separating part 50 52I, 52O are sutured in car medial wall 32a and car lateral wall 32b.

Subsequently, as shown in Figure 8 A to 8 D, pipe portion cloth material 78 will be extended to be sewn in Guan Bucai 70 and inner tube 63, with And, prepare the extension pipe portion 77 folded by forming predetermined fold line 73 and pipe fold line 75.Afterwards, such as Fig. 9 B and Figure 10 A It is shown, by inner tube 63 and the extension pipe portion 77 feed path portion 28 being arranged in airbag body 33 and the area for connecting oral area 33 Domain.

Additionally, as shown in Fig. 7 A to Fig. 7 C, it is right twice by forming predetermined overlap fold line 93 and strengthening fold line 91 Folding strengthens cloth material 90, thereby prepares to form reinforcement cloth 81, afterwards, as shown in figs. 10 a and 10b, is located at from connection oral area 33 The region that region inside airbag body 31 is adjacent into main body bulge 37, arrangement strengthens cloth 81.Afterwards, using suture Line 95, arranges leading edge suturing part 55a and back edge suturing part 55b that capsule forms suturing part 55, by connection oral area cloth material 52I It is stitched together with 52O, reinforcement cloth 81, inner tube 63 and extension pipe portion 77.

Additionally, as shown in Figure 10 B and Figure 10 C, installation portion 60 is sewn to into presumptive area, air bag 30 is consequently formed.

Next, as seen in figs. 11a and 11b, air bag 30 is folded, the use adhesive tape 97 that can rupture wraps up the air bag for having folded 30, to prevent air bag 30 from scattering from this folded state, afterwards, mounting bracket 13 is attached to into installation portion 60.Additionally, such as Figure 11 C With shown in Figure 11 D, through the opening 35c of the horizontal pipe portion 35 of connection oral area 33, aerator 20 is inserted and is located in reinforcement cloth 81 The inner circumferential side of the transverse pipe covering part 84 inside horizontal pipe portion 35, and, folder 26 is fastened with from the periphery of horizontal pipe portion 35 Lateral aerator 20 is extruded so that aerator 20 is connected with horizontal pipe portion 35, thus assembles air bag component 99.

In the case of air bag component assembled as described above 99, each installation portion 60 for being provided with mounting bracket 13 is arranged in car Each installed position on the inner panel 2 of body 1, installation bolt 14 is inserted by each installing hole 60a, afterwards, is fastened on respective In screwed hole, and, mounting bracket portion 22c is fixed by bolt 24, aerator 20 is fixed to by inner panel 2 with this, thus, will Air bag component 99 is attached to vehicle body 1.Afterwards, the lead (not shown) for triggering aerator is connected with aerator 20, and this draws Line extends from the scheduled control device installed in vehicle body V.Subsequently, when front post ornament 4 and headliner 5 are attached to car During body 1, and, when center pillar decoration 7 and rear pillar decoration 8 are also attached to vehicle body 1, head portion protecting air bag apparatus S may be installed On automobile V.

If triggering aerator 20 after head portion protecting air bag apparatus S is installed to automobile V, expanding gas G is from aerator The gas discharge outlet 21c of 20 main body 21 is discharged, and the flow export 22a and 22b through bubbler 22 is flowed in connection oral area 33, Thus main body bulge 37 is flowed to.Specifically, as shown in Figures 2 to 4, expanding gas G through bubbler 22 flow export 22a and 22b towards the inner circumferential side for strengthening cloth 81 is flowed out, and afterwards, the outlet sides of inner tube 63 is flowed into by strengthening separated part 81d of cloth 81 65th, 66 and pipe portion 77 is extended, thus, expanding gas G flows into the front bulge 39 of main body bulge 37 and rear bulge 40. Therefore, air bag 30 is pushed and opens airbag cover 11, and afterwards, as shown in double dot dash line in Fig. 1, air bag 30 launches and expands, to cover The in-car side of lid window W1 and window W2, center pillar CP and rear pillar RP.

In this case, according to the head portion protecting air bag apparatus S of the present embodiment, as shown in Figures 2 to 4, in connection oral area In 33 vertical pipe portion 34 with the leading edge 34a separately of aerator 20 on, and, the axial VD's along vertical pipe portion 34 On above-below direction, the reinforcement fold line 91 for strengthening cloth material 90 for doubling is formed, thus, cloth 81 will be strengthened and be arranged on connection oral area 33 inside.That is, with this construction, along the axial LD of horizontal pipe portion 35, in forward direction, from the swollen of the discharge of aerator 20 Flatulence body G flows forwardly into the inside of connection oral area 33, and, this flowing of expanding gas G is smoothly shifted, this is because Although expanding gas G is contacted with cloth 81 is strengthened, this region only has strengthens fold line 91 not with suture section, thus will not send out Life is for the infringement of suture section.Therefore, expanding gas G may pass through separated part 81d and flow towards main body bulge 37, thus be lifted Strengthen the thermostability of cloth 81.

On the other hand, in cloth 81 is strengthened, it is possible to reduce the infringement caused because expanding gas G has high temperature, this is Because, although using leading edge suturing part 55a, from the in-car sidepiece 81a that reinforcement fold line 91 extends (as face portion) Join each other with interval lateral edges (top edge) 81e mutually separated with main body bulge 37 in car lateral part 81b (as back part) Knot, but, the expanding gas G perpendicular contacts as strengthened occurring on fold line 91 will not occur in above-mentioned zone, also, it is logical Separated part 81d is crossed, expanding gas G also can flow to main body bulge 37 from fold line 91 is strengthened, so also being difficult to make discharge pressure Put on fiercely herein.

Additionally, strengthening cloth 81 has the reinforcement fold line 91 for strengthening cloth material 90 being arranged only on leading edge 81g, and, Thus the reinforcement cloth 81, can be strengthened cloth 81 and obtain simple structure without extra using being used to improve the part of its thermostability etc. Make.

Therefore, according to the head portion protecting air bag apparatus S of the present embodiment, can plain mode improve and be arranged on the connection of air bag 30 The thermostability of the reinforcement cloth 81 in oral area 33.

Further, according to the head portion protecting air bag apparatus S of the present embodiment, as shown in Fig. 7 A to 7C, first pass through edge and substantially hang down Straight in the fold line 93 for strengthening fold line 91, doubling strengthens cloth material 90 to form duplex 92, the setting on duplex 92 afterwards Strengthen fold line 91, so as to be formed cloth 81 is strengthened.

Therefore, according to the present embodiment, because strengthen cloth 81 being made up of the duplex 92 obtained from reinforcement cloth material 90, even if swollen Flatulence body G is compromised positioned at reinforcement cloth material 90A (see Fig. 3) for strengthening the inner circumferential side of cloth 81, in the reinforcement cloth for strengthening the outer circumferential side of cloth 81 Material 90B can protect car medial wall 32a (as face wall) and car lateral wall 32b (as back face wall) in airbag body 31, It is not damaged by expanding gas G, thus further improve the thermostability for strengthening cloth 81.

Additionally, according to the head portion protecting air bag apparatus S of the present embodiment, strengthening the in-car sidepiece 81a and car lateral part of cloth 81 81b has substantially rectangular tabular, and is set to extend to main body bulge beyond vertical pipe portion 34 together with fold line 91 is strengthened 37.Additionally, in-car sidepiece 81a and car lateral part 81b have：Transverse pipe covering part 84, it is arranged in the horizontal of connection oral area 33 In pipe portion 35；Vertical duct covering part 83, it is arranged in the vertical pipe portion 34 of connection oral area 33；Extension 85, it is towards main body Bulge 37 is arranged；And slit 86, it is arranged between transverse pipe covering part 84 and extension 85, with from strengthen fold line 91 ora terminalis (back edge) 81f separately are extended near vertical duct covering part 83.In addition, by using as the in-car of face wall The outer peripheral edge of side wall 32a (connection oral area cloth material 52I) is with the car lateral wall 32b's (being connected oral area cloth material 52O) as back face wall Outer peripheral edge is sutured to each other, and forms connection oral area 33, also, when the outer peripheral edge and the outer peripheral edge of car lateral wall 32b of car medial wall 32a When being sutured to each other, by by strengthen cloth 81 in-car sidepiece 81a and car lateral part 81b interval lateral edges (top edge) 81e that This suture, meanwhile, the periphery of slit 86 is sutured to each other, arranged inside connection oral area 33 with this and strengthen cloth 81.

Therefore, according to the present embodiment, because by by the interval lateral edges 81e of in-car sidepiece 81a and car lateral part 81b It is sutured to each other, meanwhile, the periphery of slit 86 is sutured to each other, the reinforcement cloth material 90 for constituting reinforcement cloth 81 is arranged on into connection oral area 33 inside, so, when the outer peripheral edge for forming the car medial wall 32a and car lateral wall 32b that connect oral area 33 is sutured to each other, The position skew for strengthening cloth 81 can be prevented.

In addition, because strengthening cloth 81 has predetermined slit 86, when aerator 20 is inserted into the transverse pipe of connection oral area 33 During portion 35, by slit 86, the transverse pipe covering part 84 for strengthening cloth 81 may move, to expand with the main body for being sewed with extension 85 Portion 37 separates.Therefore, it can smoothly enter to be about to the operation that aerator 20 is connected to connection oral area 33, including installing and connecting apparatus The operation of (such as folder 26).

Additionally, according to the head portion protecting air bag apparatus S of the present embodiment, inner tube 63 is arranged on reinforcement cloth 81 and airbag body 31 Between, to guide the vertical pipe portion 34 from connection oral area 33 to flow into the expanding gas G in main body bulge 37, by this way, Expanding gas G is set to be approximately perpendicular to the fore-and-aft direction top set of the axial direction of vertical pipe portion 34 VD into two strands for being separated from each other.Such as Fig. 5 And shown in Fig. 8, by forming pipe fold line 75, doubling lamellar Guan Bucai 70, with formed inner tube 63.Inner tube 63 is arranged to, and makes The pipe fold line 75 that folded tube cloth material 70 must be used for is arranged in and is connected the lower limb 63c separately of oral area 33, positioned at inner tube It is used in the longitudinal direction branch into expanding gas G in two strands of flow path (feed path portion) 38, additionally, inner tube in 63 What is extended from pipe fold line 75 to both sides in 63 is partially disposed on the outer circumferential side for strengthening cloth 81, thus, respectively becomes and is arranged in gas In-car sidepiece 63a and car lateral part 63b on the inner circumferential side of the car medial wall 32a and car lateral wall 32b of capsule body 31.

Therefore, according to the head portion protecting air bag apparatus S of the present embodiment, even if the main body bulge 37 of airbag body 31 is arranged To be expanded by bulge 39 forward and rear bulge 40 (arranging in fore-and-aft direction) supply expanding gas G, inner tube 63 is allowed Expanding gas G is smoothly introduced into front bulge 39 and rear bulge 40, thus expands main body bulge 37.In addition, inner tube 63 itself are also configured as, wherein for receive from the vertical pipe portion 34 of connection oral area 33 expanding gas G region (i.e. be connected oral area 33 lower limbs 63 separately) it is not provided with suturing section, but it is disposed with for the pipe of folded tube cloth material 70 (its formed inner tube 63) Fold line 75.Therefore, by only pipe fold line 75 being arranged on lower limb 63c into so simple structure arrangement, can improve The thermostability of inner tube 63.

In addition, according to the present embodiment, inner tube 63 has tubular inlet sidepiece 64 and two pipe-type outlet sidepieces 65,66, should Tubular inlet sidepiece 64 is arranged on the inside of connection oral area 33, and two pipe-type outlet sidepieces 65,66 are from the end of inlet side 64 Portion (lower end) 64a is arranged at the position of pipe fold line 75 with forked branch, and, for rearward guiding expansion gas The tubulose of body G extends the outlet sides 66 that pipe portion 77 is sewn to inner tube 63.Additionally, inner tube 63 is configured to so that Guan Bucai 70 by Duplex 74 is constituted, and the duplex 74 includes being arranged in the inner peripheral portion 71 of the inner circumferential side of inner tube 63 and is arranged in the periphery of inner peripheral portion 71 The peripheral part 72 of side, extend pipe portion 77 be seamed to peripheral part 72, and, covered with inner peripheral portion 71 sutured suture section 72a, 78a。

Therefore, even if inner tube 63 is configured to, extend pipe portion 77 suture and be connected with outlet sides 66, suture section 72a and Suture section 78a is covered by the inner peripheral portion 71 of bimetallic tube cloth material 70, is which thereby enhanced suture section 72a and is sutured the heat-resisting of section 78a Property.

Certainly, inner tube 63 its own be also made up of duplex 74, the duplex 74 is obtained from Guan Bucai 70, from inlet side 64 extend to outlet sides 65,66, thus further increase its thermostability.

On the other hand, in the inner tube 63 according to the present embodiment, although extending pipe portion 772 is sewn to rear outlet sides 66 On, according to the arrangement of expansion arc, extend pipe portion 77 only can suture and be connected with front outlet sides 65, or, extending pipe portion 77 can Suture and be connected with front outlet sides 65, rear outlet sides 66.

Additionally, when extension pipe portion is arranged on the outlet sides of inner tube, Guan Bucai 70 can be used to improve heat-resisting by containing The coating fabric of the coating of property is formed, and, extension cloth material 78 can be formed by uncoated fabric.

Further, although the present embodiment has illustrated the construction that inner tube 63 is provided with air bag 30, the present invention Can be applicable to that there is the air bag being constructed such that：Inner tube 63 is not provided with inside connection oral area 33, but is arranged and is strengthened cloth 81.

Additionally, although the present embodiment has illustrated head portion protecting air bag apparatus S, the present invention can be real in the following cases Apply：Air bag has the connection oral area from main body bulge projection, and, air bag is also bent to L-shaped so that connection oral area is being installed Bent with L-shaped to during automobile, to form vertical pipe portion and horizontal pipe portion, therefore, even if not being curtain type gas bag, the present invention can be answered In such as pedestrian protection airbag etc..

In addition, the connection oral area of air bag of the invention can from main body bulge simply linearly to project, therefore, Connection oral area can be bent when automobile is attached to L-shaped, to form vertical pipe portion and horizontal pipe portion.

Additionally, in the present embodiment, using back edge suturing part 55b and 88, by strengthen cloth 81 in-car sidepiece 81a and The outer peripheral edge of slit 86 of car lateral part 81b is stitched together with airbag body 31, although the present embodiment has illustrated above-mentioned feelings Condition, the width dimensions in the longitudinal direction of vertical duct covering part 83 can be set as, and from fold line 91 is strengthened vertical duct is extended to Size value near back edge 34b in portion 34 so that the back edge in vertical duct covering part 83 with reinforcement fold line 91 separately 81 are not sewn on airbag body 31.

Claims (10)

1. a kind of airbag apparatus, including air bag and generally cylindrical aerator, the air bag is suitable to by receiving expansion wherein Gas and expand, and, the aerator is used to supply the expanding gas to the air bag；

Wherein, the air bag includes airbag body and the reinforcement cloth being arranged on inside the airbag body,

The airbag body includes the connection oral area of main body bulge and tubulose, and the main body bulge is by receiving wherein institute State expanding gas and expand, so that the face wall of the airbag body is separated from one another with the back face wall of the airbag body, and, The connection oral area is connected with the aerator so that the expanding gas flow into the main body bulge from the aerator It is interior,

The connection oral area includes vertical pipe portion and horizontal pipe portion, and the vertical pipe portion is connected with the main body bulge, with The main body bulge is approximately perpendicular to, and, the horizontal pipe portion is connected with the vertical pipe portion, to be approximately perpendicular to Vertical pipe portion is stated, by the way that the aerator is inserted in the horizontal pipe portion, the horizontal pipe portion is also connected with the aerator Connect, the connection oral area is arranged on automobile with L-shaped bending state, and

The cloth of strengthening is set to cover the periphery of the aerator in the inner circumferential side of the connection oral area,

Characterized in that,

The reinforcement cloth is formed by the reinforcement cloth material of at least doubling lamellar,

On the edge separated with the aerator in the described vertical pipe portion of the connection oral area, and, approximately along institute The axial direction of vertical pipe portion is stated, is provided for folding the fold line of the reinforcement cloth material, as reinforcement fold line；

Face portion and back part are to extend to the part of the reinforcement cloth both sides from the reinforcement fold line in the reinforcement cloth, with And, it is separately positioned on the inner circumferential side of the back face wall of the face wall and the connection oral area of the connection oral area；

Separated part, it is used to separating the expanding gas to allow the expanding gas to flow out, and the separated part is arranged in from described Strengthen the main body side edge in the face portion and the back part that fold line extends；And

The face portion extended from the reinforcement fold line and the interval lateral edges of the back part are swollen with the main body Swollen portion is spaced apart, and the interval lateral edges are coupled each other.

2. airbag apparatus according to claim 1, wherein, first along the fold line for being approximately perpendicular to the reinforcement fold line Strengthen cloth material described in doubling, form duplex, afterwards, the reinforcement fold line is set on the duplex, thereby, form institute State reinforcement cloth.

3. airbag apparatus according to claim 1, wherein, the face portion and the back part for strengthening cloth has Substantially rectangular tabular, and, it is set to cross the vertical pipe portion, extend to the master together with the reinforcement fold line Volume expansion portion；

Wherein, the reinforcement cloth is further included：

Transverse pipe covering part, it is arranged in the described horizontal pipe portion of the connection oral area；

Vertical duct covering part, it is arranged in the described vertical pipe portion of the connection oral area；

Extension, it is arranged in the main body bulge side of the reinforcement cloth；And

Slit, it is arranged between the transverse pipe covering part and the extension, and, the slit is from the extension The ora terminalis separated with the reinforcement fold line extends to the vicinity of the vertical duct covering part,

Wherein, by by it is described connection oral area face wall outer peripheral edge and the connection oral area back face wall outer peripheral edge each other Suture, forms the connection oral area；And

When the outer peripheral edge of the back face wall of the outer peripheral edge and the connection oral area of the face wall of the connection oral area is sutured to each other, lead to Cross and be sutured to each other the face portion of reinforcement cloth and the interval lateral edges of the back part, meanwhile, will be described narrow The periphery of seam is sutured to each other, and the reinforcement cloth is arranged on into the inside of the connection oral area.

4. airbag apparatus according to claim 2, wherein, the face portion and the back part for strengthening cloth has Substantially rectangular tabular, and, it is set to cross the vertical pipe portion, extend to the master together with the reinforcement fold line Volume expansion portion；

Wherein, the reinforcement cloth is further included：

Transverse pipe covering part, it is arranged in the described horizontal pipe portion of the connection oral area；

Vertical duct covering part, it is arranged in the described vertical pipe portion of the connection oral area；

Extension, it is arranged in the main body bulge side of the reinforcement cloth；And

Slit, it is arranged between the transverse pipe covering part and the extension, and, the slit is from the extension The ora terminalis separated with the reinforcement fold line extends to the vicinity of the vertical duct covering part,

Wherein, by by it is described connection oral area face wall outer peripheral edge and the connection oral area back face wall outer peripheral edge each other Suture, forms the connection oral area；And

When the outer peripheral edge of the back face wall of the outer peripheral edge and the connection oral area of the face wall of the connection oral area is sutured to each other, lead to Cross and be sutured to each other the face portion of reinforcement cloth and the interval lateral edges of the back part, meanwhile, will be described narrow The periphery of seam is sutured to each other, and the reinforcement cloth is arranged on into the inside of the connection oral area.

5. airbag apparatus according to claim 1, wherein, inner tube be arranged on the reinforcement cloth and the airbag body it Between, to guide the described vertical pipe portion from the connection oral area to flow into the expanding gas of the main body bulge, with this Mode so that the expanding gas be approximately perpendicular to the vertical pipe portion axially direction top set become be separated from each other two Stock；

Wherein, said inner tube is formed by the Guan Bucai of at least doubling lamellar, and, said inner tube is arranged as：

In said inner tube for the expanding gas to be divided in two strands of flow path, it is being spaced apart with the connection oral area Edge on, the fold line for folding the Guan Bucai is arranged, as pipe fold line；And

The outer circumferential side for being partially disposed on the reinforcement cloth of both sides is extended in said inner tube from the pipe fold line, and, by This respectively becomes the face portion of the inner circumferential side of the face wall for being arranged on the airbag body and is arranged on airbag body The back part of the inner circumferential side of the back face wall.

6. airbag apparatus according to claim 2, wherein, inner tube be arranged on the reinforcement cloth and the airbag body it Between, to guide the described vertical pipe portion from the connection oral area to flow into the expanding gas of the main body bulge, with this Mode so that the expanding gas be approximately perpendicular to the vertical pipe portion axially direction top set become be separated from each other two Stock；

Wherein, said inner tube is formed by the Guan Bucai of at least doubling lamellar, and, said inner tube is arranged as：

In said inner tube for the expanding gas to be divided in two strands of flow path, it is being spaced apart with the connection oral area Edge on, the fold line for folding the Guan Bucai is arranged, as pipe fold line；And

The outer circumferential side for being partially disposed on the reinforcement cloth of both sides is extended in said inner tube from the pipe fold line, and, by This respectively becomes the face portion of the inner circumferential side of the face wall for being arranged on the airbag body and is arranged on the airbag body The back part of the inner circumferential side of back face wall.

7. airbag apparatus according to claim 3, wherein, inner tube be arranged on the reinforcement cloth and the airbag body it Between, to guide the described vertical pipe portion from the connection oral area to flow into the expanding gas of the main body bulge, with this Mode so that the expanding gas be approximately perpendicular to the vertical pipe portion axially direction top set become be separated from each other two Stock；

Wherein, said inner tube is formed by the Guan Bucai of at least doubling lamellar, and, said inner tube is arranged as：

In said inner tube for the expanding gas to be divided in two strands of flow path, it is being spaced apart with the connection oral area Edge on, the fold line for folding the Guan Bucai is arranged, as pipe fold line；And

The outer circumferential side for being partially disposed on the reinforcement cloth of both sides is extended in said inner tube from the pipe fold line, and, by This respectively becomes the face portion of the inner circumferential side of the face wall of the airbag body for being arranged on the airbag body and is arranged on The back part of the inner circumferential side of the back face wall of the airbag body.

8. airbag apparatus according to claim 4, wherein, inner tube be arranged on the reinforcement cloth and the airbag body it Between, to guide the described vertical pipe portion from the connection oral area to flow into the expanding gas of the main body bulge, with this Mode so that the expanding gas be approximately perpendicular to the vertical pipe portion axially direction top set become be separated from each other two Stock；

Wherein, said inner tube is formed by the Guan Bucai of at least doubling lamellar, and, said inner tube is arranged as：

In said inner tube for the expanding gas to be divided in two strands of flow path, it is being spaced with the connection oral area On the edge opened, the fold line for folding the Guan Bucai is arranged, as pipe fold line；And

The outer circumferential side for being partially disposed on the reinforcement cloth of both sides is extended in said inner tube from the pipe fold line, and, by This respectively becomes the face portion of the inner circumferential side of the face wall of the airbag body for being arranged on the airbag body and is arranged on The back part of the inner circumferential side of the back face wall of the airbag body.

9. airbag apparatus according to claim 6, wherein, said inner tube includes the outlet side of inlet side and two tubuloses Portion, the inlet side be arranged on it is described connection oral area in, and, the outlet sides from the end of the inlet side with point Dichotomy, and be arranged at the position of the pipe fold line；And

The extension pipe portion for guiding the expanding gas is sutured in outlet sides described at least one,

Wherein, the Guan Bucai is made up of the duplex, and the duplex includes being arranged in the interior of the inner circumferential side of said inner tube All portions and be arranged in the inner peripheral portion outer circumferential side peripheral part, and, it is described extension pipe portion be sutured in the peripheral part, And, the suture section for having sutured is covered by the inner peripheral portion.

10. airbag apparatus according to claim 8, wherein, said inner tube includes the outlet of inlet side and two tubuloses Sidepiece, the inlet side be arranged on it is described connection oral area in, and, the outlet sides from the end of the inlet side with Forked branch, and be arranged at the position of the pipe fold line；And

The extension pipe portion for guiding the expanding gas is sutured in outlet sides described at least one,

Wherein, the Guan Bucai is made up of the duplex, and the duplex includes being arranged in the interior of the inner circumferential side of said inner tube All portions and be arranged in the inner peripheral portion outer circumferential side peripheral part, and, it is described extension pipe portion be sutured in the peripheral part, And, the suture section for having sutured is covered by the inner peripheral portion.