CN104401286B - Airbag apparatus - Google Patents

Abstract

The present invention relates to a kind of airbag apparatus, it utilizes the bulge of the air bag of expansion gas expansion, is divided into upstream side bulge and downstream bulge by partition member.Partition member forms following strips when the expansion with bulge is with plane tensioning, i.e. the length along long side direction is longer than the length along the short side direction orthogonal with this long side direction.Supplying the Primary closure during expansion gas to bulge, the interior pressure regulator valve opened during this supply, it is arranged on partition member, and there is the inner opening portion of the slit-shaped extending along short side direction and be arranged on a pair of valve body closer to each other/detached around inner opening portion.

Description

Airbag apparatus

The application is to be that July 26, Application No. 201110210767.3, invention and created name in 2011 are the applying date The divisional application of the application of " airbag apparatus ".

Technical field

The present invention relates to a kind of airbag apparatus, its in the case of impact being applied to vehicle because of collision, by making air bag Expand, protection passenger avoids being impacted by this.

Background technology

Avoid the device being impacted by this, air bag as protection passenger in the case that vehicle is applied because of collision with impact Device is effective.This airbag apparatus have the air bag being formed as bag-shaped and supply expansion gas into this air bag Inflator.

As a kind of mode of this airbag apparatus, there is the side of the impact that protection passenger avoids being subject to be caused by side crash etc. Side air bag device.In this side air bag device, above-mentioned air bag is assembled together with inflator with folded state To in the backrest of such as seat.In this side air bag device, if from side to composition side portion of vehicle Part (Vehicular side body), such as side door apply impact, then expansion gas supplies to inside air bag from inflator.Swollen using this Swollen gas makes airbag inflation launch, and in the state of a part is retained in backrest, ejects from seat.This air bag In small space between passenger on occupying seat and Vehicular side body, forwards expand and launch.Expand expansion Air bag constrains passenger, apparatus with shock absorbing simultaneously in passenger and the Vehicular side body entering to in-car between, and protection passenger avoids being subject to To above-mentioned impact.

As a kind of mode of above-mentioned side air bag device, the type that existing inside air bag is not separated is (hereinafter referred to as For " prior art 1 ").

In addition, in Japanese Unexamined Patent Publication 10-67297 publication, as the other modes of side air bag device, carrying Go out in lattice setting pressure regulator valve (pressure-control valve) that air bag is divided into top air bag and lower airbag, and utilize this pressure regulation The effect of valve makes the type (hereinafter referred to as " prior art 2 ") that lower airbag is prior to top airbag inflation.Additionally, component names Noun in bracket represents component names used in above-mentioned publication below.Side air bag dress in the prior art 2 In putting, air bag is expanded to the height of occupant waist first, is then expanded to chest level.Therefore, it can carry out more efficient rushing Hit absorption.

In side air bag device, because of the impact from side, Vehicular side body enters to in-car, and air bag is by this car Body sidepiece presses to passenger.With this pressing, passenger is withstood shocks load by air bag.This load bears pressure by passenger from air bag The product representation intrinsic pressure with above-mentioned air bag of the compression area of air bag side of the area of power, i.e. passenger.Avoid being subject to from protection passenger Impact angle it is desirable to this load reaches setting after Vehicular side body initially enters at short notice, then, with Vehicular side body Inlet (stroke) unrelated, be maintained setting.

But, in above-mentioned prior art 1, because the increase of the inlet with Vehicular side body, intrinsic pressure and compression area Increase, thus the carrying out that enter with Vehicular side body of the load that is subject to from air bag of passenger and be gradually increased.If Vehicular side body is not Enter certain degree, then load is not up to setting.And, load also continues to increase after reaching setting, finally surpasses Cross setting.As a result, before load reaches setting, not starting passenger is sufficiently protected by impact.Carrying After lotus reaches setting, passenger passes through air bag and is subject to the load more than setting.

On the other hand, in technical scheme 2, the specific configuration of pressure regulator valve is unclear.Therefore, passenger is from carrying that air bag is subject to The ambiguity Chu of the inlet of lotus and Vehicular side body.

And, become the structure of complexity although the raising of load character can be realized by making pressure regulator valve, but in this feelings Under condition, can be with the cost increase of airbag apparatus.

This problem is more than above-mentioned side air bag device, is equally possible and sends out on other kinds of airbag apparatus Raw.

Content of the invention

It is an object of the invention to provide the structure of simple cheap can be utilized, improve and the load that passenger bears is made by air bag The airbag apparatus of the characteristic of lotus.

To achieve these goals, according to the 1st aspect of the present invention, airbag apparatus are characterised by having：Air bag, its Plane with being formed before gas supply in expansion, and expanded by being supplied to expansion gas；Bulge, it is arranged on air bag On；Partition member, bulge is at least divided into upstream side bulge and downstream bulge by it；And pressure regulator valve, its to Bulge supplies the initial stage valve closing during expansion gas, limits expansion gas from upstream side bulge downstream side bulge Circulation, during this supply, interior midway starts valve opening and lifts restrictions, partition member with bulge expansion and with Plane tensioning forms strip, and it is longer than the length along the short side direction orthogonal with this long side direction along the length of long side direction Degree.Pressure regulator valve has：The inner opening portion of slit-shaped, it is arranged on partition member, and the short side direction along partition member extends； And a pair of valve body, it is arranged on around inner opening portion, optionally closer to each other/to separate.

According to the 2nd aspect of the present invention, airbag apparatus are characterised by having：Air bag, it supplies in expansion gas Formed plane before, and the supply by expansion gas and expand；Bulge, it forms on air bag；Partition member, its Bulge is at least divided into upstream side bulge and downstream bulge；And pressure regulator valve, it is supplying expansion to bulge With the initial stage valve closing during gas, limit the circulation from upstream side bulge downstream side bulge for the expansion gas, from this confession Start valve opening to the midway of period, lift restrictions, pressure regulator valve has：The inner opening portion of slit-shaped, it forms on partition member； And a pair of valve body, it is arranged on around inner opening portion, and optionally closer to each other/to separate, partition member has each other Opposite opposed end, and by turning back along broken line, thus becoming the doubling making opposed end be located at approximating position State, the partition member of doubled state, so that broken line state positioned at upstream side compared with opposed end, configuration is in unexpansive exhibition In the bulge of open state, and be combined with air bag with the both ends along broken line direction in two opposed ends.

According to the 3rd aspect of the present invention, provide a kind of using airbag restraint and protect and ride on vehicle seat The airbag apparatus of passenger.Vehicle seat comprises backrest and is arranged at a pair collateral support of backrest both sides, respectively Collateral support prominent to the front of the vehicles, have foremost simultaneously.Side air bag device is housed in the one of backrest Sidepiece.Air bag has bulge, and it utilizes corresponding to the impact applying from vehicle seat side from inflator supply Expanding gas, forwards launch to expand in the side of vehicle seat.Bulge is divided into many by plane partition member Individual position, it includes at least the upstream side bulge being supplied to expansion gas, and adjacent with the front side of upstream side bulge, And it is supplied to the downstream bulge of expansion gas via upstream side bulge.Pressure regulator valve is arranged on partition member.Pressure regulation Valve has：Peristome, it makes connection between upstream side bulge and downstream bulge；And so that peristome is optionally opened A pair of the valve body closing.Two valve body of pressure regulator valve, when upstream side bulge expands and before constraint passenger, are expanded by upstream side Expansion gas in portion presses and contacts with each other, and so that peristome is closed, when upstream side bulge expands and constrains passenger, profit With the external force applying with this constraint, separated from one another by partition member bending, peristome is opened.Peristome is arranged For, upstream side bulge launch expand in the state of, positioned at the collateral support on vehicle seat foremost forwards Leave the position of 85mm, and from rearward leaving foremost the region between the position of 15mm.

According to the 4th aspect of the present invention, a kind of utilization airbag restraint is provided and protects carriage on vehicle seat The side air bag device of passenger.Air bag has bulge, and it is using corresponding to rushing of applying from vehicle seat side The expansion gas hitting and supplying, forwards launches to expand in the side of vehicle seat.Bulge is by plane separation Part is divided into multiple positions, and it includes at least the upstream side bulge being supplied to expansion gas, and expands with upstream side The front side in portion is adjacent, and is supplied to the downstream bulge of expansion gas via upstream side bulge.Partition member sets Put pressure regulator valve.Pressure regulator valve has：Peristome, it forms the slit-shaped of the width extension along vehicle seat, makes upstream Connect between side bulge and downstream bulge；And make a pair of valve body that peristome is optionally opened and closed.Pressure regulator valve Two valve body, when upstream side bulge expands and before constraint passenger, are pressed by the expansion gas in the bulge of upstream side Press and contact with each other, so that peristome is closed, when upstream side bulge expands and constrains passenger, using apply with this constraint External force, separated from one another by partition member bending, so that peristome is opened.The bulge of swelling state is being provided with partition member Position, and on the section orthogonal with fore-and-aft direction, has length along the vertical direction with respect to the width along vehicle seat Outer shape in the range of 1.1 to 5.0 for the length ratio in degree direction.

Brief description

Fig. 1 is in the 1st embodiment that the present invention is embodied as side air bag device, will be provided with this side peace The side view that the seat of full airbag apparatus is represented together with passenger.

Fig. 2 is to represent in the 1st embodiment, the normal cross-section of the position relationship of seat, passenger and Vehicular side body Figure.

Fig. 3 is to represent that, in the 1st embodiment, the vertical view of the position relationship of seat, passenger and Vehicular side body is cutd open Face figure.

Fig. 4 is in the 1st embodiment, by the air bag module in the resettlement section being assembled in backrest and Vehicular side body one Act the partial top profile representing.

Fig. 5 is in the 1st embodiment, by air bag for unexpansive deployed condition air bag module and seat and passenger The partial side elevation view representing together.

Fig. 6 represents in the 1st embodiment, by the air bag of the unexpansive deployed condition of Fig. 5 by vehicle-width direction The air bag module of centre partial cut, the cross-sectional side view representing together with seat and passenger.

Fig. 7 is to represent in the 1st embodiment, observes, from tiltedly rear, the air bag module that air bag is unexpansive deployed condition The state on top part oblique view.

Fig. 8 represents the fragmentary cross-sectional view of the profile construction of the partition member of 8-8 line etc. along Fig. 5.

Fig. 9 is to represent in the 1st embodiment, and airbag inflation and partition member are with the air bag module of plane tensioning The profilograph of cage structure.

Figure 10 A is the figure representing the 1st embodiment, is the pressure regulator valve part nearby on the partition member represent flexion Part oblique view.

Figure 10 B is the figure representing the 1st embodiment, is to represent near with the pressure regulator valve on the partition member of plane tensioning Partial part oblique view.

Figure 11 A is the explanatory diagram of the action of pressure regulator valve representing the 1st embodiment.

Figure 11 B is the explanatory diagram of the action of pressure regulator valve representing the 1st embodiment.

Figure 11 C is the explanatory diagram of the action of pressure regulator valve representing the 1st embodiment.

Figure 12 is to represent in the 1st embodiment, using the Vehicular side body entering to in-car side during air bag pressing passenger Intrinsic pressure, compression area and load each variation pattern performance plot.

Figure 13 represents the state from Fig. 4, and air bag a part is retained in backrest and swollen from seat ejection The partial top profile of the state of swollen expansion.

Figure 14 is the figure representing the 2nd embodiment embodying the present invention, be by the air bag of unexpansive deployed condition by The air bag module of the middle body cut-out of vehicle-width direction, the cross-sectional side view representing together with seat and passenger.

Figure 15 represents the fragmentary cross-sectional view of the profile construction of the partition member of 15-15 line etc. along Figure 14.

Figure 16 is to represent in the 2nd embodiment, with part near the pressure regulator valve on the partition member of plane tensioning Part oblique view.

Figure 17 A is the explanatory diagram of the action of pressure regulator valve representing the 2nd embodiment.

Figure 17 B is the explanatory diagram of the action of pressure regulator valve representing the 2nd embodiment.

Figure 17 C is the explanatory diagram of the action of pressure regulator valve representing the 2nd embodiment.

Figure 18 is the figure of the 3rd embodiment representing and realizing the present invention, is by vehicle width by the air bag of unexpansive expansion The air bag module of the middle body cut-out in direction, the cross-sectional side view representing together with seat and passenger.

Figure 19 is to represent in the 3rd embodiment, from tiltedly the air bag mould that forward observation air bag is unexpansive deployed condition The part oblique view of the state on the top of block.

Figure 20 is the fragmentary cross-sectional view of the profile construction representing the partition member of 20-20 line etc. along Figure 18.

Figure 21 is to represent in the 3rd embodiment, with part near the pressure regulator valve on the partition member of plane tensioning Part oblique view.

Figure 22 A is the explanatory diagram of the action of pressure regulator valve representing the 3rd embodiment.

Figure 22 B is the explanatory diagram of the action of pressure regulator valve representing the 3rd embodiment.

Figure 22 C is the explanatory diagram of the action of pressure regulator valve representing the 3rd embodiment.

Figure 23 is the figure representing the 4th embodiment embodying the present invention, is by vehicle by the air bag of unexpansive expansion The air bag module of the middle body cut-out of width, the cross-sectional side view representing together with seat and passenger.

Figure 24 is the fragmentary cross-sectional view of the profile construction representing the partition member of 24-24 line etc. along Figure 23.

Figure 25 is to represent in the 4th embodiment, with part near the pressure regulator valve on the partition member of plane tensioning Part oblique view.

Figure 26 A is the explanatory diagram of the action of pressure regulator valve representing the 4th embodiment.

Figure 26 B is the explanatory diagram of the action of pressure regulator valve representing the 4th embodiment.

Figure 26 C is the explanatory diagram of the action of pressure regulator valve representing the 4th embodiment.

Figure 27 is for illustrating to set the outer joint portion of the partition member in the 5th embodiment embodying the present invention When condition figure, be to represent the air bag module that the air bag of unexpansive deployed condition is cut off by vehicle-width direction middle body Cross-sectional side view.

Figure 28 is to represent in the 5th embodiment, and the air bag of unexpansive deployed condition is by the central part of vehicle-width direction The cross-sectional side view of the disconnected air bag module of cutting.

Figure 29 is the figure representing the 6th embodiment embodying the present invention, be by the air bag of unexpansive deployed condition by The cross-sectional side view that the air bag module of vehicle-width direction middle body cut-out is represented together with seat and passenger.

Figure 30 is to represent in the 6th embodiment, observes, from tiltedly rear, the air bag mould that air bag is unexpansive deployed condition The part oblique view of the state on the top of block.

Figure 31 is the fragmentary cross-sectional view of the profile construction representing the partition member of 31-31 line etc. along Figure 29.

Figure 32 is the fragmentary cross-sectional view of the profile construction representing the partition member of 32-32 line etc. along Figure 29.

Figure 33 is to represent in the 6th embodiment, with part near the pressure regulator valve on the partition member of plane tensioning Part oblique view.

Figure 34 is to represent in the 6th embodiment, and airbag inflation and partition member are with the air bag module of plane tensioning In-built profilograph.

Figure 35 is to be schematically illustrated in the 6th embodiment, and the upstream side bulge internal pressure-regulating valve in expansion cuts out The top plan view of state.

Figure 36 is to be schematically illustrated in the 6th embodiment, the reversion of two valve body and in the bulge of downstream valve closing The top plan view of state.

Figure 37 is to be schematically illustrated in the 6th embodiment, makes pressure regulator valve in downstream due to the external force with passenger restraint The top plan view of the state opened in the bulge of side.

Figure 38 is the figure of the 7th embodiment representing and realizing the present invention, is by vehicle by the air bag of unexpansive deployed condition The air bag module of width middle body cut-out, the cross-sectional side view representing together with seat and passenger.

Figure 39 A is the fragmentary cross-sectional view of the profile construction representing the partition member of 39A-39A line etc. along Figure 38.

Figure 39 B is the fragmentary cross-sectional view of the profile construction representing the partition member of 39B-39B line etc. along Figure 38.

Figure 40 is to represent in the 7th embodiment, with part near the pressure regulator valve on the partition member of plane tensioning Part oblique view.

Figure 41 A is the part oblique view of another that represents the partition member being made up of the 1st embodiment piece of cloth piece.

Figure 41 B is the part oblique view of another that represents the partition member being made up of the 1st embodiment piece of cloth piece.

Figure 42 is to represent another of the pressure regulator valve of partition member being made up of the 6th embodiment piece of cloth piece partly oblique View.

Figure 43 A is to represent to apply the present invention to the different types of side air bag device with the 1st to the 5th embodiment The side view of another.

Figure 43 B is to represent to apply the present invention to the different types of side air bag device with the 1st to the 5th embodiment The side view of another.

Figure 44 A is to represent equally to apply the present invention to the different types of side air bag with the 1st to the 5th embodiment The side view of another of device.

Figure 44 B is to represent equally to apply the present invention to the different types of side air bag with the 1st to the 5th embodiment The side view of another of device.

Figure 45 A is to represent equally to apply the present invention to the different types of side air bag with the 1st to the 5th embodiment The side view of another of device.

Figure 45 B is to represent equally to apply the present invention to the different types of side air bag with the 1st to the 5th embodiment The side view of another of device.

Figure 46 is to represent the figure of another that applies the present invention to air bag device for knee protection, is will to be provided with this air bag Control stick the partial side elevation view that represents together with passenger's lower limb of neighbouring part.

Figure 47 is to represent in another example of Figure 46, and air bag is the front view of the air bag module of unexpansive deployed condition.

Figure 48 is the figure of another of the outer joint portion representing the partition member in the 5th embodiment, is to represent unexpansive The cross-sectional side view of the air bag module that the air bag of deployed condition is cut off by vehicle-width direction middle body.

Figure 49 is to represent in the 8th embodiment realizing the present invention, will be provided with the vehicle seat of side air bag device The side view that chair is represented together with passenger.

Figure 50 is to represent that, in the 8th embodiment, the vertical view of the position relationship of seat, passenger and Vehicular side body is cutd open Face figure.

Figure 51 is to represent that a part is retained in backrest air bag, and ejects from seat and launch the shape expanding The partial top profile of state.

Figure 52 is the air bag module being cut off the air bag of unexpansive deployed condition by vehicle-width direction middle body, with car The cross-sectional side view that seat and passenger represent together.

Figure 53 is the figure representing the 8th embodiment, is the part stravismus of part near the pressure regulator valve representing on partition member Figure.

Figure 54 is to represent in the 9th embodiment, the schematic diagram of modeled upstream side bulge as ellipsoid.

Figure 55 is to represent in the 9th embodiment, with regard to the pass of the ratio of the outer shape of bulge, tension force and Tension Difference The performance plot of system.

Specific embodiment

(the 1st embodiment)

Below, referring to figs. 1 to Figure 13, for the 1st reality that the present invention is embodied as vehicle side air bag device The mode of applying illustrates.

Additionally, in following record, using the direction of advance of vehicle as front, the direction of retreat of vehicle is entered as rear Row explanation.In addition, the above-below direction in following records represents the above-below direction of vehicle, left and right directions represents the vehicle width of vehicle Direction, and left and right directions when advancing with vehicle is consistent.

As shown in Figures 2 and 3, on vehicle 10, attached in the in-car side (right side of Fig. 2, the upside of Fig. 3) of Vehicular side body 11 Nearly configuration seat 12.Here, so-called Vehicular side body 11 refers to be configured at the vehicle component parts of the sidepiece of vehicle 10, its Mainly be equivalent to car door, pillar.For example, corresponding with front stall Vehicular side body 11 is Qianmen, center pillar (B post).In addition, and back seat Corresponding Vehicular side body 11 is the rear portion at side door (back door), C post, the front portion of tyre gaiter, rear side post.

Seat 12 is configured to, and has Chain cushion (with regard to portions) 13 and backrest (backrest) 14, this backrest 14 erect from the rear side of above-mentioned Chain cushion 13, and using tilt adjusting mechanism (diagram is omitted) adjustment angle of inclination.

Below, the internal structure for the sidepiece outside the car on backrest 14 illustrates.

It is configured as the seat frame of its skeleton in backrest 14.A part for seat frame is as shown in figure 4, configure (in the diagram for downside) part outside the car in backrest 14, this part (hereinafter referred to as " side frame part 15 ") is passed through will Metallic plate bending machining and formed.In the front side of the seat frame comprising side frame part 15, configuration is by polyurethane foam etc. The seat cushion 16 that elastomeric material is constituted.In addition, the backboard 17 of hard that formed by synthetic resin etc. of rear side configuration in seat frame. And, seat cushion 16 is coated by epidermis, but omits the diagram of this epidermis in the diagram.Also identical for Figure 13 described later.

In seat cushion 16, outside the car of side frame part 15 near arrange resettlement section 18.The position of resettlement section 18 is to take one's seat Near the rear ramp of the passenger P on seat 12 (with reference to Fig. 3).Air bag module AM, this gas is assembled in this resettlement section 18 Capsule modules A M constitutes the major part of side air bag device.

Outside the car of resettlement section 18 and front side corner, extend slit 19 to outside oblique front truck.On front side of seat cushion 16 Corner 16C and slit 19 clamped by position (position being surrounded by the frame of double dot dash line in the diagram), constitute using described later Air bag 40 and rupture fracture reservations 21.

It is assembled in the air bag module AM in above-mentioned backrest 14, there is inflator assemblies 30 and air bag 40 as main structure Become part.

Below, this two component parts are illustrated respectively.Here, in the 1st embodiment, with regard to air bag mould When block AM and its component parts refer to " above-below direction " " fore-and-aft direction ", as shown in figure 1, the backrest 14 with seat 12 On the basis of.The direction that backrest 14 is erected as " above-below direction ", using the thickness direction of backrest 14 as " front and back To ".Typically, since backrest 14 is used with a certain amount of state of tilted rearward, so " above-below direction " is not strictly Vertical direction, but tilt a certain amount of.Similarly, " fore-and-aft direction " is not strictly horizontal direction, but tilts a certain amount of.

<Inflator assemblies 30>

As shown in Figures 4 and 5, inflator assemblies 30 are configured to, and have the inflator 31 as gas generating source and installation Keeper 32 in this inflator 31 outside.In the 1st embodiment, as inflator 31, using the class being referred to as thermomotive Type.Inflator 31 is generally a cylindrical shape, houses the gas producing agent (diagram is omitted) producing expanding gas inside it.Filling One end (being bottom in the 1st embodiment) of the long side direction of mechanism of qi 31, connects conduct and sends to this inflator 31 The wire harness (diagram is slightly) of the additional distribution of control signal.

And, as inflator 31 it is also possible to replace the thermomotive using above-mentioned gas producing agent, and use following classes Type：Destroy the dividing plate of the gases at high pressure air accumulator being filled with gases at high pressure using gunpowder so as to spray gas (mixed type).

On the other hand, keeper 32 is components described below：Work as bubbler, and also have above-mentioned inflator 31 It is fastened to the function on side frame part 15 together with air bag 40.The major part of keeper 32 is by carrying out example by sheet materials such as metallic plates It is shaped generally as tubular as bending machining.Window portion 33 is arranged on keeper 32, a large amount of expansions spraying from inflator 31 are used Gas, is sprayed to the outside of keeper 32 by this window portion 33.

On keeper 32, as the latch for printed circuit for being installed on above-mentioned side frame part 15, fixing many spiral shells Bolt 34.In other words, it is that many bolts 34 are fixed on inflator 31 indirectly via keeper 32.

Additionally, inflator assemblies 30 can also be to make inflator 31 and the integral part of structure of keeper 32.

<Air bag 40>

As shown in Figure 1 to Figure 3, air bag 40 vehicle 10 traveling process medium made due to side crash impact from side apply When on Vehicular side body 11, accept the supply of expansion gas G from inflator 31.Accept the air bag of this expansion gas G supply 40, in the state of the part (rear portion) making its own is retained in above-mentioned resettlement section 18, from this resettlement section 18 to before substantially Side ejects, and is launched by expanding between the upper part of the body and Vehicular side body 11 of the passenger P being seated on seat 12, and protection is taken advantage of The upper part of the body of objective P avoids being impacted by above-mentioned side crash.

Fig. 5 is that unfilled for air bag 40 expansion gas G is expanded into plane state (hereinafter referred to as " unexpansive exhibition Open state ") air bag module AM, represent together with passenger P and seat 12.In addition, Fig. 6 is to represent air bag module AM Internal structure, by the air bag 40 of the unexpansive deployed condition of Fig. 5 by vehicle-width direction middle body cut-out air bag mould Block AM, is represented together with seat 12 and passenger P.The position being surrounded by big round frame W of single dotted broken line in Fig. 6, enlarged representation The position being surrounded by little round frame W.

As shown in Figures 5 and 6, air bag 40 is set in it by making 1 piece of pieces of cloth 41 (also referred to as base fabric, filler rod cloth etc.) edge Broken line 42 doubling of middle body, vehicle-width direction overlap, by make this intersection become bag-shaped in the way of combine and shape Become.Here, in order to distinguish two parts of the above-mentioned coincidence of air bag 40, the part positioned at in-car side is referred to as cloth portion 43 (reference Fig. 6), the part outside car is referred to as cloth portion 44 (with reference to Fig. 5).

Additionally, in the 1st embodiment, by pieces of cloth 41 doubling in the way of making broken line 42 be located at air bag 40 front end, but Can be according to making broken line 42 be located at the mode of another end, such as rearward end by pieces of cloth 41 doubling.In addition, air bag 40 can also It is made up of the two pieces of pieces of cloth split along broken line 42.In this case, air bag 40 is by making two pieces of pieces of cloth in vehicle-width direction Overlap, so that this two pieces of pieces of cloth is combined in its circumference and be formed as bag-shaped.Additionally, air bag 40 can also be by more than or equal to three pieces Pieces of cloth constitute.

As described above, becoming plane air bag 40 to be also referred to as " planar air bag " in unexpansive deployed condition.

On air bag 40, the outer shape in two pieces of cloth portions 43,44, is the symmetrical pass of line each other with broken line 42 as axis of symmetry System.The form and dimension in each cloth portion 43,44 is set as so that air bag 40 expands exhibition between seat 12 and Vehicular side body 11 When opening, can take up the region corresponding with the upper part of the body of the passenger P being seated on this seat 12.

As above-mentioned cloth portion 43,44, use intensity height and the material that there is flexibility and easily fold, such as polyethylene Class, the fabric of the formation such as polyamide-based.

The above-mentioned combination in two cloth portions 43,44, realizes being arranged at the periphery joint portion 45 of its circumference.Real the 1st Apply in mode, periphery joint portion 45 pass through by the circumference in two cloth portions 43,44 except posterior end portion and leading section (broken line 42 neighbouring part) part sewing i.e. with suture suture and formed.

With regard to this sewing, accompanying drawing such as Fig. 5 to Fig. 7, Fig. 9, Figure 10 and Figure 14, Figure 16, Figure 18, Figure 19, Figure 21, In Figure 23, Figure 25, Figure 27, Figure 28, Figure 41 A, Figure 41 B, Figure 47 and Figure 48, by 2 kinds of line style performance sewing parts.A kind of line style is The line (one kind of dotted line) that the thick line of certain length is represented with intermittently arranging, this represents becomes the outer of the cloth portion suturing object The state (with reference to Fig. 5 etc.) of the suture of side (between non-cloth portion).Another kind of line style makes to represent with a little arranging at certain intervals Line (one kind of dotted line), this represents the state of the suture of inner side (between cloth portion) in cloth portion becoming suture object (with reference to Fig. 6 Deng).That is, show the figure of sewing in the way of the latter, represent the profile construction along the section through sewing part.

As shown in Figures 5 and 6, between two cloth portions 43,44, and the space being surrounded by periphery joint portion 45 is (with periphery Joint portion 45 is in a ratio of the space of inner side), become the upper part of the body in passenger P by using expansion gas G (with reference to Fig. 1 etc.) Expand near outside, thus for protecting it to avoid the bulge 46 being impacted above the waist.

Additionally, periphery joint portion 45 can also by from using above-mentioned suture suture different by way of, such as using viscous Connect the bonding of agent and formed.This point is also identical for outer joint portion 54,55 described later and interior joint portion 63.

The attitude to tilt in the way of lower the closer to front side for the above-mentioned inflator assemblies 30, rear end in air bag 40 for the configuration Bottom.And, the bolt 34 of keeper 32 is inserted in the cloth portion 43 of in-car side (with reference to Fig. 4).By inserting in this manner Enter, so that inflatable component 30 engages with respect to the state that air bag 40 positions.In addition, the rear portion lower end of air bag 40 is with respect to inflation group The bottom of part 30, the connector 37 using ring-type is engaged with airtight conditions.

The bulge 46 of air bag 40 is divided into by partition member 50：Start to be supplied to the expansion gas from inflator 31 most The upstream side bulge 47 of body G；And it is supplied to the downstream bulge 48 of expansion gas G via upstream side bulge 47. Partition member 50 has the structure identical structure with commonly referred to frenulum, using with the cloth portion 43 of air bag 40,44 identical materials Material is formed.

Fig. 7 represents the part from the top tiltedly the air bag module AM that rear observation air bag 40 is unexpansive deployed condition State, Fig. 8 represents the profile construction of the 8-8 line along Fig. 5.In this Fig. 8, each component omission thickness represents, and interior combination Portion 63 is represented with zigzag.This point is also identical in Figure 15, Figure 20 and Figure 24 described later.Fig. 9 represents that air bag 40 expands and makes point Every part 50 with the internal structure of the air bag module AM of plane tensioning.In addition, Figure 10 A represents the partition member 50 of flexion A part, Figure 10 B represents with the mid portion P1 of the partition member 50 of plane tensioning and its neighbouring part.As this Fig. 7 extremely Shown in Figure 10 A, Figure 10 B, partition member 50 passes through to turn back along substantially vertically extending broken line 51, so that opposite phase End 52,53 is become positioned at approximating doubled state.The partition member 50 of this doubled state, so that broken line 51 and two Opposed end 52,53 compares the state positioned at upstream side, configuration (with reference to Fig. 8) in the bulge 46 of unexpansive deployed condition.

Above-mentioned partition member 50 becomes strip when the expansion with bulge 46 is with plane tensioning, i.e. make edge Length L1 in the direction (hereinafter referred to as " long side direction ") of broken line 51, is longer than the direction (hereinafter referred to as " minor face orthogonal with broken line 51 Direction ") length L2 (with reference to Fig. 6, Fig. 9).

The partition member 50 of doubled state respectively at two opposed ends 52,53, by along roughly vertical direction (long side Direction) the outer joint portion 54,55 that extends, be combined with two cloth portions 43,44 of air bag 40.Two outer joint portions 54,55 are expanding When portion 46 expands, in the position of the side at the middle part becoming on fore-and-aft direction of the upper part of the body of passenger P, and corresponding to partition member The cloth portion 43,44 of 50 each opposed end 52,53 combines (with reference to Fig. 3).

Thus, partition member 50 by lodge between the cloth portion 44 outside the in-car side cloth portion 43 of air bag 40 and car.Separate Part 50 state for doubling (with reference to Fig. 7, Fig. 8) when bulge 46 is unexpansive.In addition, partition member 50 is swollen in bulge 46 When swollen, become the state (with reference to Fig. 9, Figure 10 B) with plane tensioning in vehicle-width direction, limit the vehicle of this bulge 46 The thickness of width.

In addition, the partition member 50 of doubled state is at the both ends in the direction (long side direction) along broken line 51, with air bag 40 In conjunction with.That is, the upper end of partition member 50 of doubled state and bottom pass through above-mentioned periphery joint portion 45 (with reference to Fig. 6, Fig. 7, Fig. 9), be combined with the upper end in two cloth portions 43,44 of air bag 40 and bottom, sew together.

As shown in Figures 5 and 6, by above-mentioned partition member 50, bulge 46 is divided into the upstream side bulge of rear side 47 and the downstream bulge 48 of front side, above-mentioned upstream side bulge 47 constitutes the latter half of bulge 46, and configures inflation Thermomechanical components 30, above-mentioned downstream bulge 48 constitutes the first half of this bulge 46, and does not configure inflator assemblies 30.

In the 1st embodiment, partition member 50 as shown in Figure 10 A, 10B, by the direction along broken line 51 i.e. generally under 2 parts 56,57 that direction (long side direction) arranges are constituted.On upper and lower two parts 56,57, so that its end 58,59 The state that ora terminalis 58E, 59E are in alignment with each other, makes end 58,59 overlap with banding.Upper and lower two parts 56,57 are forming band respectively Boundary portion office between a pair of coincidence part 61 of shape and other positions (hereinafter referred to as " non-coincidence portion 62 "), by folding The interior joint portion 63 that the direction (short side direction) that line 51 is substantially orthogonal extends combines.This boundary member is from above-mentioned ora terminalis 58E, 59E At a distance from.

Set up separately in the substantially central portion of above-mentioned partition member 50 and put pressure regulator valve 70.Pressure regulator valve 70 is supplying to bulge 46 Expand the Primary closure during using the supply of gas G, limit expansion gas G from upstream side bulge 47 downstream side bulge 48 circulations, from the beginning of the midway during this supply, the external force valve opening that applied using the constraint with passenger, release above-mentioned limit System.

Below, the structure for this pressure regulator valve 70 illustrates, and above-mentioned interior joint portion 63 is in one part (in the 1st enforcement The part of broken line 51 is crossed in mode) place's releasing combination.In other words, the side between two coincidence parts 61 and non-coincidence portion 62 Boundary partly goes up, and at the part crossing over broken line 51, is not provided with the interior joint portion 63 making upper and lower two parts 56,57 combine.Above-mentioned The part being not provided with interior joint portion 63 combines the position being released from, and extends along short side direction, constituting makes upstream side bulge 47 The inner opening portion 71 of the slit-shaped connecting with downstream bulge 48.

The part corresponding with inner opening portion 71 (part nearby) of coincidence part 61, constitutes a pair of valve body 73,74.More accurate Really say, valve body 73 is constituted by the part between inner opening portion 71 and ora terminalis 58E, by between this peristome 71 and ora terminalis 59E Part constitute valve body 74.By making two valve body 73,74 in its at least a portion, such as leading section 73T, 74T each other Contact, thus limit the circulation (reference picture 11B) of the gas G of the expansion between two valve body 73,74.In addition, by making valve The overall of body 73 leaves from the entirety of valve body 74, and expansion gas G can be made to circulate between two valve body 73,74 (reference picture 11C).

Additionally, as described above, there are two coincidence parts 61 of two valve body 73,74 before bulge 46 expansion, joining Put in upstream side bulge 47.

And, two coincidence parts 61 boundary portion office between non-coincidence portion 62, upward or lower section is (real the 1st Apply in mode is top) bending, overlapping with non-coincidence portion 62.Additionally, two coincidence parts 61 of the banding of bending, along interior combination The both ends in the direction (short side direction) in portion 63, by above-mentioned joint portion 54,55 cloth portion 43,44 corresponding with air bag 40 and point Combine every part 50 (non-coincidence portion 62), sew (with reference to Fig. 6, Fig. 8) together.

As shown in figure 4, having the air bag 40 and inflator assemblies 30 above-mentioned air bag module AM as main composition part, lead to Cross and so that the air bag 40 (with reference to Fig. 5) of unexpansive deployed condition is folded, become compressive state (hereinafter referred to as " collecting state ").This It is in order that air bag module AM, with respect to the resettlement section 18 of limited size on backrest 14, becomes the structure being suitable for housing.

The air bag module AM of above-mentioned collecting state, so that inflator assemblies 30 are located at rear side, and makes the big portion of air bag 40 Divide the state being located at front side, configuration is in the resettlement section 18 of backrest 14.And, as described above, extend from keeper 32 and Bolt 34 in insertion air bag 40 (cloth portion 43) is inserted in side frame part 15, and is fastened by nut 36.By this fastening, fill Mechanism of qi assembly 30 is fixed on side frame part 15 together with air bag 40.

Additionally, inflator assemblies 30 can also be fixed on vehicle 10 using the method different from above-mentioned bolt 34 and nut 36 On (side frame part 15).

As shown in figure 1, side air bag is in addition to above-mentioned air bag module AM, also there is shock transducer 75 and control Device 76.Shock transducer 75 is made up of acceleration transducer etc., and the Vehicular side body 11 being arranged on vehicle 10 is (with reference to Fig. 2 and figure 3), on etc., detection is applied to the impact this Vehicular side body 11 from side.Control device 76 is according to from shock transducer 75 Detection signal, controls the action of inflator 31.

As described above, constituting the side air bag device of the 1st embodiment.Below, this side air bag is filled The representative action pattern put, reference picture 11A to 11C illustrates.This Figure 11 A to Figure 11 C shows schematically pressure regulator valve 70 Form time dependent situation after expansion gas G supply starts, omits for thin portion and simplifies.In addition, Figure 12 represents The pressure (intrinsic pressure) with gas G for the expansion in each bulge 47,48 in upstream side and downstream, each bulge 47,48 of passenger P The load that the compression area of side and passenger P are subject to from air bag 40, corresponding to the Vehicular side body being entered to in-car side due to impact 11 inlet and how to change.Load is by intrinsic pressure and compression area product representation.

In this side air bag device, when impact not being applied to vehicle 10 from side due to side crash, not from control Device 76 processed exports the actuating signal for making its action to inflator 31, thus not from inflator 31 to bulge 46 (upstream Side bulge 47) supply expansion gas G.Air bag 40 continues to be housed in collecting together with inflator assemblies 30 with collecting state In portion 18 (with reference to Fig. 4).Now, in air bag 40, two cloth portions 43,44 are closer to each other.Partition member 50 becomes makes broken line 51 The doubled state positioned at upstream compared with opposed end 52,53.Two valve body 73,74 overlap in upstream side bulge 47. The inlet (stroke) of Vehicular side body 11 is " 0 ".Intrinsic pressure all very low (the substantially atmospheric pressure) of each bulge 47,48, compression face Long-pending and load is " 0 ".

On the other hand, if during the traveling of vehicle 10, it is applied more than to Vehicular side body 11 due to side crash or waits In the impact of setting, this impact is detected by shock transducer 75, then according to this detection signal, from control device 76 to inflation Machine 31 exports the actuating signal for making its action.Using the inlet of Vehicular side body 11 now as ST0.With this actuating signal Corresponding, in inflator 31, gas producing agent produces the expansion gas G of High Temperature High Pressure.This expansion gas G supplies first To upstream side bulge 47, this upstream side bulge 47 starts to expand.

In bulge 46, the partition member 50 of doubled state so that broken line 51 compared with opposed end 52,53 positioned at upper The state configuration of trip side.And, this partition member 50 at each opposed end 52,53, by outer joint portion 54,55 and air bag 40 Corresponding cloth portion 43,44 combine (with reference to Fig. 7, Fig. 8).In addition, partition member 50 is respectively at the two ends in the direction along broken line 51 Portion (upper end and bottom), is combined (with reference to Fig. 6, Fig. 7) by periphery joint portion 45 with two cloth portions 43,44.Therefore, if Upstream side bulge 47 is made to start to expand in the manner described above, then the partition member 50 of doubled state is stretched.For lattice Part 50, applies tension force along the direction (long side direction) of broken line 51 or orthogonal to that direction (short side direction), partition member 50 becomes For flat state (with reference to Fig. 9).

But, on partition member 50, it is not that it integrally equably becomes tensioning state.This is because, according to above-mentioned Partition member 50 and cloth portion 43,44 combinations, vertical section when upstream side bulge 47 expands is as shown in figure 9, be upper and lower Nearby part curvature is larger at both ends, the less longitudinally long substantially elliptical of other parts curvature.Because being this irregular The section of shape (non-circular), so in the top P2 and bottom P3 of partition member 50, and the part (mid portion between it P1) compare, be not easily susceptible to stretch.Therefore, the top P2 and bottom P3 of partition member 50, becomes general plane in mid portion P1 During the tensioning state of shape, still in broken line 51 compared with opposed end 52,53 flexion positioned at upstream side (simply than doubling The state that state is slightly opened) (reference picture 11A).

With respect to two valve body 73,74 positioned at upstream side bulge 47, from the two of its overlapping direction (thickness direction) Side applies internal pressure PI.This intrinsic pressure PI does not have bulge 46 so high when passenger P is constrained.Two valve body 73,74 utilize this interior PI is snugly into each other in entire surface for pressure, becomes and limits the self-enclosed shape that expansion gas G circulates between two valve body 73,74 State.Additionally, the coincidence part 61 being bent and overlapping with the non-coincidence portion 62 of partition member 50, non-heavy to this using intrinsic pressure PI Conjunction portion 62 presses (reference picture 11A).Due to these situations, two valve bodies 73,74 are more prone to close.

Here, as shown in figure 9, partition member 50 is formed as, long side direction (roughly vertical direction) is than short side direction more Long (L1>L2).Thus, in the above-mentioned mid portion P1 of partition member 50, easily short side direction is applied to be better than to long side direction Tension force.In the 1st embodiment, because inner opening portion 71 applies this short side direction extension compared with high tension along easy, Inner opening portion 71 easily closes.

But although having the strong or weak relation of above-mentioned tension force, but because in the long side side that inner opening portion 71 will be made to open To also applying tension force, so inner opening portion 71 might not reliably close, inner opening portion 71 is likely to open.But, even if In this case, two valve body 73,74 are also at least closed in itself leading section 73T, 74T.This is because, even if by making Mid portion P1 tensioning and make inner opening portion 71 tension, apply to make the active force that it opens, this active force is also in inner opening portion Maximum at 71, it is gradually reduced with leaving from inner opening portion 71, at leading section 73T, 74T of two valve body 73,74 Little.

Additionally, in the 1st embodiment, to the coincidence part 61 of non-coincidence portion 62 bending, in the direction along interior joint portion 63 The both ends of (short side direction), are combined (reference picture with cloth portion 43,44 by outer joint portion 54,55 together with opposed end 52,53 10B).Therefore, when upstream side bulge 47 expands, it is not only the mid portion P1 to partition member 50 and applies short side direction relatively Strong tension force, also applies the stronger tension force of the direction to coincidence part 61.

If two valve body 73,74 at least contact with each other in a part, pressure regulator valve 70 becomes the state of valve closing, upstream Expansion gas G in side bulge 47 is limited by two valve body 73,74 and inner opening portion 71 downstream side bulge 48 outflows.

By above-mentioned restriction, store expansion gas G in upstream side bulge 47, after exceeding inlet ST0, only go up The intrinsic pressure of trip side bulge 47 begins to ramp up.

In the 1st embodiment, because bulge 46 is divided into upstream side bulge 47 and downstream by partition member 50 Bulge 48, so the volume of upstream side bulge 47, in the case of not separated less than bulge 46 (prior art 1 and this Kind of situation is suitable) its bulge volume.Therefore, the situation that the intrinsic pressure and bulge 46 of upstream side bulge 47 is not separated Under compare beginning rapid increase, and rise get Geng Gao.Especially, the expansion gas G in upstream side bulge 47 allows only two Circulate between individual valve body 73,74, without flowing to downstream bulge 48 between two valve body 73,74.Therefore, Because of the above-mentioned outflow of expansion gas G, and the intrinsic pressure rate of climb of upstream side bulge 47 will be made to reduce.

And, now, air bag 40 (bulge 46) is not also contacted with passenger P, and therefore, compression area and load are all still protected Hold as " 0 ".

And, by the above-mentioned expansion of upstream side bulge 47, with contrary with the order that this upstream side bulge 47 folds Order release folded state.If upstream side bulge 47 releases folded state (expansion) while expanding, seat leans on The seat cushion 16 of the back of the body 14 is pressed by air bag 40, in fracture reservations 21 (with reference to Fig. 4) place's fracture.Air bag 40 as shown in figure 13, will A part of (parts near inflator assemblies 30) are retained in the state in backrest 14, by the position of fracture, from this seat Chair back 14 ejects.

Then, it is supplied to the upstream side bulge 47 of expansion gas G as shown in Figures 2 and 3, in Vehicular side body 11 with just Seat in the passenger P on seat 12 the upper part of the body latter half of between, forwards release folded state while expansion.

When the inlet of Vehicular side body 11 reaches ST1, then due to this Vehicular side body 11, bulge 46 starts to press passenger P The upper part of the body.Because bulge 46 only has upstream side bulge 47 to expand, passenger P bears the pressure of bulge 46, While making the position of contact only have upstream side bulge 47.Therefore, passenger P bears the area on the surface of the pressure of bulge 46 (compression area of upstream side bulge 47 side), (upstream side is swollen with the area on the surface of the pressure bearing upstream side bulge 47 The compression area in swollen portion 47) identical, all less.But, the compression area of this upstream side bulge 47 is with corresponding to side crash Impact Vehicular side body 11 enters to in-car side carrying out, i.e. inlet increase and increase.

The shock loading that passenger P is subject to by bulge 46, increases also with compression area and intrinsic pressure increase.As above Described, because the intrinsic pressure relatively early of upstream side bulge 47 begins to ramp up, load starts increased inlet ST1, and swollen Swollen portion 46 by separate in the case of (prior art 1) load start increase inlet ST10 compare less.In other words, with In the case that bulge 46 no separates, (prior art 1) is compared, and load is regularly starting to increase earlier, corresponding to amount ahead of time Ground, reaches the setting β (with reference to Figure 12) being impacted for protecting passenger's P upper part of the body to avoid.

In the state of two valve body 73,74 are close to (closing) with its entire surface, continue upward in trip side bulge 47 Supply expansion gas G, on the other hand, when the inlet of Vehicular side body 11 reaches ST2, applies using from this Vehicular side body 11 External force, the intrinsic pressure of upstream side bulge 47 rise to value α, then pressure regulator valve 70 starts valve opening.

That is, from the beginning of the midway supplying the period with gas G for the expansion to bulge 46, with the external force of the constraint to passenger Increase, bulge 46 is pressed and deforms, the tension variation that lattice 50 bears.In addition, with the above-mentioned deformation of bulge 46, Upstream side bulge 47 intrinsic pressure further up, downstream side bulge 47 is pressed the mid portion P1 of partition member 50 (reference picture 11B), the tension variation that this mid portion P1 bears.Further, since rise is above-mentioned intrinsic pressure, partition member 50 Top P2 and bottom P3 is pressed, and deforms in the way of downstream side bulge 48 expands.As described above, top P2 and bottom P3 Before passenger restraint, become and make broken line 51 flexion (reference picture 11A) positioned at upstream side compared with end 52,53.Taking advantage of During visitor's constraint, top P2 and bottom P3 is deformed into the shape that the shape before passenger restraint (double dot dash line of reference picture 11B) inverts Shape.Due to this change of shape (reversion) of top P2 and bottom P3, tension variation is easily occurred on mid portion P1.And And, due to this tension variation, allow the deformation in the inner opening portion 71 positioned at mid portion P1, allow positioned at this mid portion P1's The action of valve body 73,74.

Now, by the above-mentioned reversion of top P2 and bottom P3, on partition member 50, the region of bearing tension force is vertically Directional Extension.Upper side member 56 tension force upward for partition member 50 is stronger, for lower side member 57 downward Tension force stronger.Due to the change of both tension force, inner opening portion 71 tension along the vertical direction of slit-shaped, it is easily opened.

On the other hand, coincidence part 61 is overlapping with non-coincidence portion 62, at the both ends in the direction along interior joint portion 63, by outer Joint portion 54,55 is combined with the cloth portion 43,44 of air bag 40.Therefore, the part close to outer joint portion 54,55 on coincidence part 61, Maintain the power of coincidence status very strong.But, this power reduces with leaving from outer joint portion 54,55, along interior joint portion 63 Direction middle body, that is, minimum at two valve body 73,74.Therefore, the coincidence part 61 being stretched along the vertical direction, only exists Valve body 73,74 and its neighbouring part deform along the vertical direction.

If inner opening portion 71 opens to a certain degree along the vertical direction, at coincidence part 61, only to bear upstream side swollen At two valve body 73,74 of high internal pressure PI in swollen portion 47, through inner opening portion 71, downstream side bulge 48 is forced out (instead Turn).When the width W1 of the above-below direction in this inner opening portion 71 is narrower, leading section 73T, 74T contact with each other, two valve body 73rd, 74 close (reference picture 11B) in leading section 73T, 74T.The above-mentioned width W1 in inner opening portion 71 for this state is less than each valve body Continue in a period of the aggregate value (=2 W2) of the width W2 (reference picture 11C) in portion 73,74.

And, if the width W1 in inner opening portion 71 is more than this aggregate value (=2 W2), then leading section 73T, 73T separates (reference picture 11C).Pressure regulator valve 70 becomes the state of valve opening, and above-mentioned restriction is released from.By this restriction cancellation, upstream side bulge Expansion gas G in 47 can pass sequentially through between inner opening portion 71 and two valve body 73,74, downstream side bulge 48 Flow out.

By this expansion outflow of gas G, the intrinsic pressure of upstream side bulge 47 starts and is changed into reducing from rising.But It is that, because Vehicular side body 11 still continues to enter to in-car side, bulge 46 presses passenger P in upstream side bulge 47, so Passenger P is continued to increase with the compression area of upstream side bulge 47.

In addition, after inlet ST2, making downstream bulge 48 start to expand due to expansion gas G, this downstream Side bulge 48 intrinsic pressure, begin to ramp up therewith.In addition, being slightly later than intrinsic pressure rising, inlet reaches ST3, but by in-car The Vehicular side body 11 that side enters, on the basis of upstream side bulge 47, downstream bulge 48 is contacted with passenger P and it is pressed Pressure, this passenger P is subject to the area (compression area of downstream bulge 48 side) in the face of pressure of downstream bulge 48 to start Increase.

Additionally, being pressed in inlet (stroke) in the intrinsic pressure and downstream bulge 48 of upstream side bulge 47 to reach ST4 Later equal.

As described above, after pressure regulator valve 70 opens (inlet is ST2), the intrinsic pressure reduction of upstream side bulge 47, with When downstream bulge 48 intrinsic pressure rising.In addition, the compression area of upstream side bulge 47 side of passenger P and downstream are swollen The compression area of swollen portion 48 side has time difference and increases.Therefore, after inlet reaches ST2, passenger P is from whole bulge 46 load being subject to, the load being subject to from upstream side bulge 47 and the load that is subject to from downstream bulge 48 total, It is less than and is only made up of air bag a bulge and is not provided with the maximum of the situation (prior art 1) of pressure regulator valve, and become holding The value (setting β) of constant.

In addition, the initial stage during expansion is with gas G supply, the load that passenger P is subject to from bulge 46 increased in early stage Plus, then this load maintains essentially in relatively low setting β.Therefore, the amount of energy of bulge 46, with only by one expand The amount of energy of portion's composition air bag and the situation (prior art 1) being not provided with pressure regulator valve is same degree.1st embodiment Stroke-load character, for prior art 1, is equivalent to the second half section to bulge supply expansion gas during The higher region of load (part Q being represented with upper right oblique line), transfers to the relatively low area of the load of front half section during this supply In the way of domain (part R so that bottom right oblique line represents).Part Q is different with part R shape, but area is roughly the same each other.

By the above-mentioned expansion of downstream bulge 48, with the order contrary with the order that this downstream bulge 48 folds Release folded state.Downstream bulge 48 between the first half (chest PT) of Vehicular side body 11 and the upper part of the body of passenger P, to Front releases (expansion) folded state.

Thus, air bag 40 is between the upper part of the body of passenger P and the Vehicular side body 11 entering to in-car side.By this air bag 40 Press to inside vehicle-width direction and constrain above the waist.And, by Vehicular side body 11 to upper part of the body transmission from side Impact, relaxed by air bag 40, and protect this upper part of the body.

Here, from side, the resistance to impact in the case of impact is applied to the upper part of the body of passenger P, generally latter half of excellent In first half.This is because latter half of have spine, portion is connected rib with spine behind, in contrast, the front portion of rib not with The position that above-mentioned spine so has intensity connects.Therefore, launch it is desirable to act on passenger from side with the expansion of air bag 40 The bulge 46 of the upper part of the body of P intrinsic pressure, first half be less than latter half of.

In the first embodiment, bulge 46 is for fore-and-aft direction, so that partition member 50 is positioned at upper for this point The first half of half body and latter half of between the mode of the vicinity of boundary member expand.Expand in the bulge 46 of air bag 40 and launch In the state of, upstream side bulge 47 is located near side latter half of above the waist, and downstream bulge 48 is located at first half Side is nearby (with reference to Fig. 3).Therefore, caused by air bag 40 the passenger P constraint initial stage, passenger P above the waist in resistance to impact Latter half of higher than first half, the upstream side bulge 47 being pressed within rising in early stage presses.In addition, at this constraint initial stage, taking advantage of Objective P above the waist in the relatively low first half of resistance to impact, be pressed within the downstream bulge 48 not having upstream side bulge 47 high by Pressure.

According to the 1st embodiment of detailed description above, following effect can be obtained.

(1) using when the expansion with bulge 46 is with plane tensioning, length L1 of long side direction is longer than minor face The partition member 50 (Fig. 9) of the strip of length L2 in direction.By being arranged on partition member 50 and extend along short side direction The inner opening portion 71 of slit-shaped and be arranged on inner opening portion 71 surrounding closer to each other/detached a pair of valve body 73,74, structure Become pressure regulator valve 70 (Figure 10).

Therefore, when upstream side bulge 47 expands, on partition member 50, using compared with long side direction to minor face side Make pressure regulator valve 70 valve closing to the higher tension force applying, expansion in upstream side bulge 47 can be limited with gas G downstream Side bulge 48 flows out.

In addition, when the external force with passenger restraint is applied on bulge 46, it is possible to use on upstream side bulge 47 The intrinsic pressure of liter makes partition member 50 deform and make tension variation.In addition, between passenger P and Vehicular side body 11 (car door guard plate), Air bag 40 deforms, and is deformed by air bag 40 itself, can make the tension variation applying to partition member 50.By this lattice The change of the tension force of part 50, can allow the deformation in inner opening portion 71 and the action of two valve body 73,74.By making inner opening Portion 71 opens, intrinsic pressure using upstream side bulge 47, and two valve body 73,74 are passed through its inner opening portion 71, and downstream side is swollen Swollen portion 48 extrudes and so that it is inverted, and can release above-mentioned restriction by making leading section 73T, 74T separate, make expansion gas G from Downstream side bulge 48 flows out upstream side bulge 47.

Thus, according to the 1st embodiment, it is possible to use inner opening portion 71, a pair of valve body 73,74 are this simple and cheap Structure, realize to bulge 46 supply the period with gas G for the expansion initial stage valve closing, the midway valve opening during this supply Pressure regulator valve 70.Can by the action of this pressure regulator valve 70, the load that makes to make the upper part of the body of passenger P be subject to by air bag 40 Characteristic, for reaching setting β at short notice, is then maintained setting β, and suitably constrains and protect passenger P this suitably Characteristic.

(2) two valve body 73,74 configure at upstream side bulge 47 (Fig. 8) before bulge 46 expands.

Therefore, it can when upstream side bulge 47 expands, and before passenger restraint in the state of, swollen using this upstream side The intrinsic pressure PI in swollen portion 47 makes two valve body 73,74 snugly into each other, realizes self-styled closed state (Figure 11 A).

Furthermore it is possible to when air bag 40 enters row constraint to passenger, make coincidence part 61 only anti-at two valve body 73,74 Turn, by inner opening portion 71 by its downstream side bulge 48 extrude (Figure 11 B), make pressure regulator valve 70 valve opening (Figure 11 C).

(3) turned back along broken line 51 by making partition member 50, partition member 50 becomes end 52,53 relatively towards each other Positioned at approximating doubled state.The partition member 50 of this doubled state is so that broken line 51 position compared with opposed end 52,53 State in upstream configures in the bulge 46 of unexpansive deployed condition.Additionally, partition member 50 is in each opposed end 52,53 By outer joint portion 54,55, cloth portion corresponding with air bag 40 43,44 combines at place, simultaneously in long side direction (generally lower section To) both ends, be combined with above-mentioned two cloth portion 43,44 by periphery joint portion 45, that is, together sew (Fig. 6, Figure 10).

Therefore, when upstream side bulge 47 expands, the top P2 and bottom P2 of partition member 50 become flexion, That is, broken line 51 compared with opposed end 52,53 positioned at upstream side (Figure 11 A).In addition, being applied in the external force with passenger restraint When on bulge 46, it is folding using intrinsic pressure PI, above-mentioned top P2 and bottom P3 change (reversion) that upstream side bulge 47 rises Line 51 shape positioned at downstream compared with opposed end 52,53, i.e. the shape contrary with before passenger restraint (Figure 11 B).Pass through This change of shape, easily makes the tension force that partition member 50 (mid portion P1) is subject to produce and changes, can allow inner opening portion 71 Deformation and valve body 73,74 action.

Now, by the above-mentioned reversion of top P2 and bottom P3, can make the region of bearing tension force on partition member 50 to The both direction of long side direction (above-below direction) expands, inner opening portion 71 and two valve body 73,74 are stretched in the direction and It is made to open (making pressure regulator valve 70 valve opening).

Especially, in the 1st embodiment, be combined with the self-enclosed function phase of above-mentioned (2), pressure regulator valve can be realized simultaneously Expansion when sealing raising during 70 valve closing and valve opening is improved with the circulation of gas G.

(4) so that two parts 56,57 ora terminalis 58E, 59E alignment state, make two parts 56,57 end 58, 59 overlap as banding.Additionally, the interior knot by using the boundary member being arranged between two coincidence parts 61 and non-coincidence portion 62 Conjunction portion 63, makes two parts 56,57 combine, thus forming partition member 50.Make two by the part in interior joint portion 63 The combination of part 56,57 releases, thus forming inner opening portion 71.At two coincidence parts 61 position corresponding with inner opening portion 71 (part nearby) is set as two valve body 73,74 (Figure 10).

Therefore, by making the boundary member between the non-coincidence portion 62 of two parts 56,57 and two coincidence parts 61, to stay The combinations of states of a part, can once form partition member 50, inner opening portion 71 and two valve body 73,74.Can not enter The special operation of row is to form inner opening portion 71 and two valve body 73,74.

Especially, two valve body 73,74 are integrally formed with partition member 50.More precisely, valve body 73 with Part 56 is integrally formed, and another valve body 74 and part 57 are integrally formed.Therefore, with two valve body 73,74 by with separation The situation that the independent part of part 50 (part 56,57) is constituted is compared, it is possible to reduce number of components.Furthermore it is possible to not enter to exercise The operation that this part and partition member 50 (part 56,57) combine.

(the 2nd embodiment)

Below, with reference to Figure 14 to Figure 17, the 2nd embodiment realizing the present invention is illustrated.

In the 2nd embodiment, as shown in Figure 14 to Figure 16, comprise a pair of coincidence part 61 of two valve body 73,74, Bulge 46 configures in downstream bulge 48 before expanding, and this respect is different from the 1st embodiment.Therefore, for real with the 1st Apply mode identical position and part, labelling identical label detailed.Additionally, it is big by single dotted broken line in Figure 14 The position that round frame X is surrounded, the position that enlarged representation is surrounded by little round frame X.

In this case, comprise two valve body 73,74 coincidence part 61 carry out slightly different with the 1st embodiment Action.

Partition member 50, before to bulge 46 supply expansion with gas G, becomes broken line 51 and opposed end 52,53 phases Than the doubled state (with reference to Figure 14, Figure 15) positioned at upstream.

If making upstream side bulge 47 start to expand by supplying expansion gas G to bulge 46, doubling shape The partition member 50 of state is stretched as shown in FIG. 16 and 17, thus applying along long side direction or short side direction to partition member 50 Tension force.Using this tension force, at partition member 50, mid portion P1 becomes the tensioning state of roughly planar, but top P2 and under Portion P3 becomes the flexion making broken line 51 positioned at upstream compared with opposed end 52,53.

Here, meeting L1>On the partition member 50 of the relation of L2, easily (orthogonal with broken line 51 to short side direction Direction) apply to be better than the tension force in long side direction (along the direction of broken line 51).Therefore, along short side direction extend inner opening portion 71 by Easily close in the strong or weak relation of mentioned strain.

In addition, when upstream side bulge 47 expands, more than applying to be better than long side along short side direction to partition member 50 The tension force in direction, to two coincidence parts 61 comprising two valve body 73,74, also applies to be better than long side direction along short side direction Tension force.Using this tension force, two valve body 73,74, with its whole surface state snugly into each other, become repression of swelling gas G Leakage sealing state.Therefore, the expansion gas G in upstream side bulge 47 not easily passs through inner opening portion 71 and two valves Between body 73,74, downstream side bulge 48 flows out.

And, in the 2nd embodiment, two valve body 73,74 started positioned at downstream before bulge 46 expansion In bulge 48.Therefore, different from the 1st embodiment, upstream side bulge 47 intrinsic pressure from its overlapping direction (thickness direction) Both sides be applied in two valve body 73,74, two valve body 73,74 will not become self-styled closed state.Further, since this is interior Pressure, the coincidence part 61 comprising two valve body 73,74 also will not be pressed by the non-coincidence portion 62 of partition member 50.

In the state of pressure regulator valve 70 valve closing, continue upward supply expansion gas G in trip side bulge 47, the opposing party Face, as seen in this fig. 17b, if applying the external force with passenger restraint and making bulge 46 be pressed deformation, partition member 50 The tension variation born.In addition, with the above-mentioned deformation of bulge 46, the intrinsic pressure PI of upstream side bulge 47 is further up. The mid portion P1 of partition member 50 is pressed, the tension variation that this mid portion P1 bears.

Further, since the above-mentioned intrinsic pressure PI rising, the top P2 and bottom P3 of partition member 50 are pressed and with downward The mode that trip side bulge 48 side bloats deforms (solid line of reference picture 17B).That is, top P2 and bottom P3 is deformed into from passenger about The shape that above-mentioned flexion (double dot dash line of reference picture 17B) before bundle inverts, at mid portion P1, tension force is susceptible to Change, thus allow the deformation in inner opening portion 71 and the action of two valve body 73,74 simultaneously.

But, when above-mentioned mid portion P1 deforms, at both ends, two fixing coincidence parts 61 are also pressed, except Position outside two ends, deforms in the way of downstream side bulge 48 side is protruded.Because this deformation direction and two valves The thickness direction of body 73,74 is identical, so compared with the direction that along the plane direction is separated from one another, two valve body 73,74 are difficult Through-thickness moves.Therefore, when the external force applying with passenger restraint is less, two valve body 73,74 remain tight each other The state of patch, plays high leakproofness.

If increased with the external force that passenger restraint applies, by the above-mentioned reversion of top P2 and bottom P3, separating The region applying tension force on part 50 expands to the both direction of long side direction (above-below direction).Upside for partition member 50 Part 56, tension force upwards is stronger, and for lower side member 57, downward tension force is stronger.Due to the change of both tension force, slit The inner opening portion 71 of shape is stretched along the vertical direction and is easily opened.

Width W1 with the above-below direction in inner opening portion 71 increases, and upside valve body 73 is as shown in arrow AU by upward Stretching.The part close to outer joint portion 54,55 on coincidence part 61, maintains the power of coincidence status stronger.But, this power with Leave from outer joint portion 54,55 and reduce, in the middle body in the direction along interior joint portion 63, that is, at two valve body 73,74 Minimum.Therefore, the coincidence part 61 vertically being stretched valve body 73,74 and its near part, along side separated from one another To the deformation of i.e. above-below direction, the lap of two valve body 73,74 gradually decreases.

And, as shown in Figure 17 C, forwards side tilts (toppling over) to the valve body 74 of at least side (such as downside) in a large number, Become the state of pressure regulator valve 70 valve opening.Expansion in upstream side bulge 47 gas G, as shown in arrow in Figure 17 C, by interior Forwards flow between peristome 71 and two valve body 73,74, and downstream side bulge 48 flows out.

Therefore, according to the 2nd embodiment, following effect can also be obtained in addition to above-mentioned (1), (3), (4).

(5) a pair of coincidence part 61 is arranged on partition member 50, it extends along short side direction respectively and becomes banding, and The expansion anteposition of bulge 46 in downstream bulge 48, the position corresponding with inner opening portion 71 on two coincidence parts 61 It is set as two valve body 73,74.Two coincidence parts 61 are curved along the boundary member in the non-coincidence portion 62 with partition member 50 Folding, makes two coincidence parts 61 cloth portion 43,44 corresponding with air bag 40 combination (Figure 16) along the both ends of short side direction.

Therefore, when upstream side bulge 47 expands, not only partition member 50, to two coincidence parts 61 also along short side direction Apply to be better than the tension force of long side direction, two valve body 73,74 can be made snugly into each other with its whole surface, and become close Envelope state.In addition, in the passenger P constraint being caused by bulge 46, maintaining two valve body 73,74 to be to be close to state up to companion Apply larger external force with this constraint, such that it is able to play high leakproofness.

Therefore, the side air bag device of the 2nd embodiment, from initial stage of passenger restraint in a period of longer, Requirement makes pressure regulator valve 70 valve closing especially effective in the case of maintaining high leakproofness.

(the 3rd embodiment)

Below, for the 3rd embodiment embodying the present invention, illustrate with reference to Figure 18 to Figure 22.

In the 3rd embodiment, as shown in Figure 18 to Figure 20, turned back by the broken line 51 extending along long side direction, that This opposite opposed end 52,53 is located adjacent to the partition member 50 of the doubled state of position, so that broken line 51 and opposed end 52nd, 53 compare the state positioned at downstream, configuration is in the bulge 46 of unexpansive deployed condition.

Structure in addition to the foregoing is identical with the 1st embodiment.Therefore, for the 1st embodiment identical position And part labelling identical label, omit detailed description.And, use the position that big round frame Y of single dotted broken line is surrounded in Figure 18, The position that enlarged representation is surrounded with little round frame Y.

In this case, partition member 50, before to bulge 46 supply expansion with gas G, becomes broken line 51 and phase End 52,53 is compared with the doubled state (with reference to Figure 18 to Figure 20) positioned at downstream.

As shown in Figure 21 and Figure 22, if making upstream side bulge 47 open by supplying expansion gas G to bulge 46 Begin to expand, then the partition member 50 of doubled state is stretched, this partition member 50 is applied to open along long side direction or short side direction Power.Due to this stretching, on partition member 50, mid portion P1 becomes the tensioning state of roughly planar, but top P2 and under Portion P3 becomes the flexion making broken line 51 positioned at downstream compared with opposed end 52,53.

For two valve body 73,74 positioned at upstream side bulge 47, from the both sides of its overlapping direction (thickness direction) Apply internal pressure PI.It is high when this intrinsic pressure PI does not have bulge 46 that passenger P is constrained.Two valve body 73,74 because of this intrinsic pressure PI with Entire surface is snugly into each other, becomes and limits the self-styled closed state that expansion gas G circulates between two valve body 73,74.Additionally, The coincidence part 61 being bent and overlapping with the non-coincidence portion 62 of partition member 50 is pressed (ginseng because of intrinsic pressure PI by this non-coincidence portion 62 According to Figure 22 A), two valve body 73,74 are more prone to close.

Here, the 3rd embodiment also identically with the 1st embodiment, is meeting L1>The strip of the relation of L2 point On part 50, inner opening portion 71 extends (with reference to Figure 21) along short side direction.On the other hand, on this partition member 50, easily Short side direction is applied to be better than with the tension force of long side direction.Therefore, because the strong or weak relation of mentioned strain, inner opening portion 71 easily closes Close.

In addition, when upstream side bulge 47 expands, also applying short for the coincidence part 61 comprising two valve body 73,74 Edge direction is better than the tension force of long side direction.Using this tension force, make two valve body 73,74 snugly into each other with its entire surface, thus Become the sealing state of repression of swelling gas G leakage.Therefore, the expansion gas G in upstream side bulge 47 not easily passs through Between inner opening portion 71 and two valve body 73,74, downstream side bulge 48 flows out.

In the state of pressure regulator valve 70 valve closing, continue upward supply expansion gas G in trip side bulge 47, the opposing party Face, if applying the external force with passenger restraint and making bulge 46 be pressed deformation, the tension force that partition member 50 bears becomes Change.In addition, with the deformation of bulge 46, the intrinsic pressure PI of upstream side bulge 47 is further up.The centre of partition member 50 Part P1 is pressed, the tension variation that this mid portion P1 bears.

On the other hand, the top P2 and bottom P3 of partition member 50 is pressed, and is bloated with downstream side bulge 48 side Mode deforms.Top P2 and bottom P3, before as mentioned above to passenger restraint, becomes and makes broken line 51 compared with opposed end 52,53 Flexion positioned at downstream.In passenger restraint, top P2 and bottom P3 become with passenger restraint before same tendency shape Shape.Therefore, compared with above-mentioned 1st embodiment, the tension force of mid portion P1 that caused by the change of shape of partition member 50 Change is less.Therefore, it is difficult to allow the deformation in inner opening portion 71 or the action of two valve body 73,74.

Now, different from the 1st embodiment, because top P2 and bottom P3 does not invert, partition member 50 bears The region of tension force expands along long side direction (above-below direction), is difficult to cause towards two sides along this long side direction (above-below direction) To tension force become strong.Therefore, easily make inner opening portion 71 and valve body 73,74 be maintained the state of closing, easily maintain sealing Property.

Then, identical with the 1st embodiment.That is, with the upper side member 56 downstream side bulge 48 of partition member 50 Side deforms, and tension force upward increases.With lower side member 57 downstream side bulge 48 side deformation, tension force downward Increase.Due to the change of both tension force, the inner opening portion 71 of slit-shaped is stretched along the vertical direction and opens (reference picture 22B).

If inner opening portion 71 opens to a certain degree along the vertical direction, on coincidence part 61, only swollen by upstream side At two valve body 73,74 of relatively high internal pressure PI in swollen portion 47, extruded through inner opening portion 71 by downstream side bulge 48 and Reversion (reference picture 22B).

And, if the width W1 in inner opening portion 71 is more than 2 W2, then leading section 73T, 74T separates (reference picture 22C). If pressure regulator valve 70 becomes the state of valve opening, the expansion gas G in upstream side bulge 47 can pass sequentially through inner opening Between portion 71 and two valve body 73,74, downstream side bulge 48 flows out.

Therefore, according to the 3rd embodiment, in addition to above-mentioned (1), (2), (4), following effects can also be obtained.

(6) broken line 51 passing through to extend partition member 50 along long side direction is turned back, and partition member 50 becomes toward each other Opposed end 52,53 be located at position closer to each other doubled state.The partition member 50 of this doubled state with broken line with relative The state positioned at downstream is compared in end 52,53, and configuration is on the bulge 46 of unexpansive deployed condition.Additionally, lattice 50 exists Each opposed end 52,53 passes through outer joint portion 54,55 cloth portion 43,44 corresponding with air bag 40 and combines, simultaneously in long side direction The both ends of (roughly vertical direction), are combined (Figure 18, Figure 21) by periphery joint portion 45 with this two cloth portion 43,44.

Therefore, when bulge 46 expands, the top P2 and bottom P3 of partition member 50 become broken line 51 and opposed end 52nd, 53 compare the flexion (Figure 22 A) positioned at downstream.In addition, being applied on bulge 46 in the external force with passenger restraint When, due to upstream side bulge 47 rise intrinsic pressure, top P2 and bottom P3 becomes broken line 52 position compared with opposed end 52,53 In the shape in downstream, that is, with passenger restraint before same tendency shape.Compared with the 1st and the 2nd embodiment, it is possible to reduce by upper The tension variation of the mid portion P1 that the change of shape of portion P2 and bottom P3 causes, allows the deformation in inner opening portion 71 or two The action of valve body 73,74 and be difficult to carry out.Inner opening portion 71 and two valve body 73,74 are maintained the state of closing, hold Easily maintain sealing.Therefore, maintain upstream side bulge 47 intrinsic pressure for high pressure after, be readily available and make upstream side bulge The 47 expansion gas G characteristic that downstream side bulge 48 flows out.

(the 4th embodiment)

Below, for the 4th embodiment embodying the present invention, illustrate with reference to Figure 23 to Figure 26 C.

In the 4th embodiment, as shown in Figure 23 and Figure 24, the coincidence part 61 comprising two valve body 73,74 is expanding Portion 46 configures in downstream bulge 48 before expanding, and this point is different from the 3rd embodiment.Therefore, for the 3rd embodiment party Formula identical position and part labelling identical label, detailed.Additionally, using big round frame Z of single dotted broken line in Figure 23 The position surrounding, the position that enlarged representation is surrounded with little round frame Z.

In this case, partition member 50, before to bulge 46 supply expansion with gas G, becomes broken line 51 and phase End 52,53 is compared with the doubled state (with reference to Figure 23, Figure 24) positioned at downstream.

If making upstream side bulge 47 start to expand by supplying expansion gas G to bulge 46, doubled state Partition member 50 be stretched, along long side direction or short side direction, tension force is applied to this partition member 50.Due to this stretching, dividing On part 50, mid portion P1 becomes the tensioning state (with reference to Figure 25) of roughly planar, but top P2 and bottom P3 becomes Make broken line 51 flexion (reference picture 26A) positioned at downstream compared with opposed end 52,53.

Here, in the 4th embodiment, two valve body 73,74 expand anteposition in bulge 46 and expand in downstream In portion 48.Therefore, different from the 3rd embodiment, upstream side bulge 47 intrinsic pressure with respect to two valve body 73,74, from weight The both sides of folded direction (thickness direction) apply thereon, and two valve body 73,74 do not become self-styled closed state.Further, since should Intrinsic pressure, the coincidence part 61 comprising two valve body 73,74 also will not be pressed by the non-coincidence portion 62 of partition member 50.

But, meeting L1>On the partition member 50 of the strip of the relation of L2, because inner opening portion 71 is along short side direction Extend, so easily applying to be better than the tension force of long side direction to short side direction, inner opening portion 71 easily closes.

On this basis, for the coincidence part 61 comprising two valve body 73,74, also apply short side direction and be better than long side side To tension force.Due to this tension force, two valve body 73,74 are snugly into each other with its entire surface, become repression of swelling gas G leakage Sealing state.Therefore, the expansion gas G in upstream side bulge 47 not easily passs through inner opening portion 71 and two valve body 73rd, between 74 and downstream side bulge 48 flows out.

On the other hand, if applying the external force with passenger restraint and making bulge 46 be pressed deformation, to lattice The tension variation that part 50 applies.In addition, with the above-mentioned deformation of bulge 46, the intrinsic pressure PI of upstream side bulge 47 goes up further Rise.The mid portion P1 of partition member 50 is pressed, the tension variation that this mid portion P1 bears.

In addition, the top P2 and bottom P3 of partition member 50 are pressed, in the way of downstream side bulge 48 side bloats Deformation (reference picture 26B).Top P2 and bottom P3, before as mentioned above to passenger restraint, becomes and makes broken line 51 and opposed end 52nd, 53 compare the flexion (reference picture 26A) positioned at downstream.In passenger restraint, top P2 and bottom P3 becomes and takes advantage of The shape of same tendency before visitor's constraint.Therefore, compared with the 2nd embodiment, caused by the change of shape of top P2 and bottom P3 The tension force of mid portion P1 change less, be difficult to the action allowing the deformation in inner opening portion 71 or two valve body 73,74.

Now, because top P2 and bottom P3 does not invert, on partition member 50, the region of bearing tension force is along long side side Expand to (above-below direction), be difficult to cause the tension force towards the both direction along this long side direction (above-below direction) to increase.Therefore, Easily make inner opening portion 71 and valve body 73,74 be maintained the state of closing, easily maintain sealing.

In addition, with the deformation of above-mentioned mid portion P1, at both ends, two fixing coincidence parts 61 are also pressed, So that in the position in addition to both ends, the mode that downstream side bulge 48 expands deforms.Because this deformation direction and two The thickness direction of valve body 73,74 is identical, so two valve body 73,74 are compared with direction separated from one another in the surface direction, It is difficult through-thickness to move.Therefore, when the external force of adjoint passenger restraint applying is less, two valve body 73,74 maintain each other The state being close to, plays high leakproofness.

Then, identical with the 2nd embodiment.That is, if increased with the external force that passenger restraint applies, with respect to separation The upper side member 56 of part 50, tension force upward increases, and for lower side member 57, tension force downward increases. Therefore, the inner opening portion 71 of slit-shaped is stretched along the vertical direction and opens (reference picture 26B).

Width W1 with the above-below direction in inner opening portion 71 increases, and the valve body 73 of upside is stretched upward, downside Valve body 74 stretched downwards.Coincidence part 61 valve body 73,74 and its near part deform along the vertical direction, two valves The lap of body 73,74 gradually decreases.

And, if be applied on bulge 46 with the larger external force of passenger restraint, make this big quantitative change of bulge 46 Shape, then, as shown in Figure 26 C, forwards side tilts (toppling over) valve body 74 of at least side in a large number, and pressure regulator valve 70 becomes valve opening State.Expansion in upstream side bulge 47 gas G, as shown in arrow in Figure 26, through inner opening portion 71 and two valve bodies Forwards flow in portion 73,74, trip side bulge 48 flows out finally down.

Therefore, according to the 4th embodiment, can obtain and above-mentioned (1), (4) to (6) identical effect.Especially, In 4 embodiments, because compared with the 3rd embodiment, two valve body 73,74 are difficult action, so being readily available will be upper Trip side bulge 47 intrinsic pressure be maintained high pressure compared with the 3rd embodiment after, make the expansion gas of upstream side bulge 47 The body G characteristic that downstream side bulge 48 flows out.

Additionally, in the case that the cloth portion 43,44 of air bag 40 is compared with suture used in periphery joint portion 45, the former Excellent heat resistance.On the other hand, the expansion gas G of high temperature is sprayed from inflator 31.Accordingly, as air bag 40, and by one Block or two clothes 31 near inflator near suture and compare, do not suture and use piece of cloth portion 31 near inflator near The method of doubling, good in terms of thermostability.

But, in this case, using the structure of the 1st and the 3rd embodiment in the 1st to the 4th embodiment, from system More difficult for the angle made.This is because air bag 40 is made up of piece of cloth portion, the sequence of operation arranging each joint portion must adopt The order of outer joint portion 54,55 → interior joint portion, 63 → periphery joint portion 54.In addition to operation is sequentially carried out with this, so that weight Conjunction portion 61 is located at the mode of upstream side bulge 47, is configured outer joint portion 54,55 and the operation of interior joint portion 63 is very tired Difficult.As a result, the structure of the 2nd and the 4th embodiment of downstream bulge 48 must be located at using coincidence part 61.Therefore, may be used To say, compared with the 1st and the 3rd embodiment that the 2nd and the 4th embodiment is located at upstream side bulge 47 with coincidence part 61, manufacture Simply there is advantage.

(the 5th embodiment)

Below, for the 5th embodiment embodying the present invention, illustrate with reference to Fig. 6, Figure 27 and Figure 28.

Air bag 40 is briefly mentioned above, by by a pair of cloth portion 43,44 using the circumference setting along this cloth portion 43,44 periphery Joint portion 45 combines and is formed as bag-shaped.In addition, briefly mentioned above, partition member 50 passes through the forward position in expansion with gas G supply Long side direction extend broken line 51 turn back, become end 52,53 relatively towards each other closer to each other and position doubling shape State.Additionally, partition member 50 is combined with cloth portion 43,44 by outer joint portion 54,55 at each opposed end 52,53, along length The situation that the both ends of edge direction are combined with two cloth portions 43,44 by periphery joint portion 45 is also briefly mentioned above.And, aftermentioned In explanation, the part being only in a ratio of in-car side to the middle body with vehicle-width direction on air bag 40 illustrates, for car The part in outside is also identical.

Here, in the outer joint portion being combined the opposed end 52 of above-mentioned partition member 50 with the cloth portion 43 of air bag 40 54, in the case of extending parallel to broken line 51 (with reference to Fig. 6 etc.), the interval D 1 of outer joint portion 54 and broken line 51, comprise broken line 51 and the cross part 51C of periphery joint portion 45, all identical in any position of long side direction.

On the other hand, partition member 50 is with the expansion of bulge 46, be tensioned become with its expansion direction (front ( Substantially right side in Fig. 6)) orthogonal plane.The opposed end 52 of partition member 50 passes through outer joint portion 54 and air bag 40 Cloth portion 43 combines, and on the other hand, the return portion of partition member 50 only passes through periphery joint portion 45 at the both ends of long side direction Be combined with above-mentioned cloth portion 43.Therefore, when partition member 50 is as mentioned above with plane tensioning, along the broken line 51 of partition member 50 The part turned back, moves to being stretched along outer joint portion 54 side of bulge 46 expansion direction.Return portion and cloth portion 43 Joint portion, i.e. the cross part 51C of broken line 51 and periphery joint portion 46, also identically with the position outside return portion, in such as Fig. 6 Shown in arrow A1, outside joint portion 54 side is stretched and moves.Position in addition to return portion is not directly tied with cloth portion 43 Close, do not limit movement.But, in the joint portion (cross part of broken line 51 and periphery joint portion 45 of return portion and cloth portion 43 51C) place, periphery joint portion 45 limits the movement of this cross part 51C.Therefore, cross part 51C and the position in addition to return portion Put difference, force to be stretched and apply very big load on this cross part 51C.

Now, outer joint portion 54 is parallel with broken line 51, as shown in fig. 6, broken line 51 is very big with the interval D 1 of outer joint portion 54. Thus, from outer joint portion 54 rearward leave above-mentioned cross part 51 farther out amount of movement (amount being stretched) larger, with its companion With the pulling force acting on this cross part 51C increases.As a result, concentrating in above-mentioned cross part 51C upper stress, may apply very big Load.For this point, by increasing reinforcement cloth etc., cross part 51C can be carried out strengthening solving, but strengthen cloth and need Being separately provided, needing to strengthen the operation that cloth is combined with air bag 40, thus leading to cost increase.

Therefore, in the 5th embodiment, can be by the outer joint portion 54 making opposed end 52 and cloth portion 43 combination Shape is tried every possible means and is tackled.

Outer joint portion 54 is set to, and makes the interval D 1 of this outer joint portion 54 and broken line 51, in the week with this outer joint portion 54 At the cross part 54C of edge joint portion 45, less than the mid portion along long side direction.

More specifically, as shown in figure 27, in the imaginary airbag apparatus extending parallel to broken line 51 in outer joint portion 54, Point A to point D defines in the following manner.

Point A：The position that outer joint portion 54 is intersected with periphery joint portion 45.

Point B：The position that broken line 51 is intersected with periphery joint portion 45.

Point C：By point B, and the position that the line segment S1 orthogonal with broken line 51 is intersected with outer joint portion 54.

Point D：On outer joint portion 54, and leave and above-mentioned line segment S1 identical to close to pressure regulator valve 70 side from above-mentioned point C The position of length.

Because periphery joint portion 45 is arranged on two positions up and down in cloth portion 43, above-mentioned point A to point D exists up and down Two groups.Additionally, every group of point A to point D is with the interior joint portion 63 of pressure regulator valve 70 as axis of symmetry, positioned at substantially each other in line symmetrical relationss Position.Therefore, here, in any group of, all jointly point of use A extremely expressions of point D.

In each group, the part (54S in outer joint portion 54, periphery joint portion 45 and point D being connected：With reference to Figure 28) setting In the position meeting following conditions.

Condition：By the line segment S2 connecting point A and point D, by the line segment S3 of point B and point D connection and periphery joint portion 45 In the region Z1 (region of labelling site in Figure 27) surrounding, compared with line segment S2, it is arranged on line segment S3 side.

In order to meet above-mentioned condition, in the 5th embodiment, as shown in figure 28, part 54S in outer joint portion 54 becomes Linear along line segment S3.Therefore, part 54S in outer joint portion 54 is obliquely intersected with broken line 51.

Additionally, in the 5th embodiment, in outer joint portion 54, the point D of the point D of one group of upside and one group of downside is connected Part 54M, become linear in the way of parallel with broken line 51.

In addition, the above-mentioned change of the shape with outer joint portion 54, the shape of the periphery 50C of partition member 50 also changes. The periphery 50C of partition member 50 be located at from outer joint portion 54 at a distance from position.In periphery 50C and outer joint portion 54 The corresponding position of part 54S, obliquely intersect with broken line 51, the position corresponding with part 54M is parallel with broken line 51.

Structure in addition to the foregoing is identical with the 1st embodiment.Therefore, for the 1st embodiment identical position And part labelling identical label, detailed.

In the 5th embodiment, different from the 1st to the 4th embodiment by being changed to the shape of outer joint portion 54 Shape, makes the interval D 1 of outer joint portion 54 and broken line 51, at the cross part 54C with periphery joint portion 45 for this outer joint portion 54, Less than the mid portion along long side direction.Compared with the situation (with reference to Fig. 6) parallel with broken line 51 with outer joint portion 54, cross part The interval D 1 of 51C and cross part 54C reduces.

Therefore, lattice 50 with bulge 46 expansion, when tensioning becomes orthogonal with its expansion direction plane, The outside joint portion of cross part 51C 54 side is stretched and the amount of movement, reduces as indicated by arrow a 1.Adjoint therewith, act on intersection The pulling force of portion 51C reduces, and the stress concentration with respect to cross part 51C is alleviated.Reduce applying at above-mentioned cross part 51C very big The probability of load.

Especially, in the 5th embodiment, part 54S in outer joint portion 54 becomes linear along line segment S3, intersects The interval D 1 of portion 54C and broken line 51 is close to the minima in possible range.Therefore, the outside joint portion of cross part 51C 54 side quilt Stretching and the amount of movement, furtherly, be the pulling force acting on this cross part 54C close to minima, thus obtain alleviation this The good result of the stress concentration at cross part 51C.Be difficult to apply very big load in above-mentioned cross part 51C, from without plus The additive method of strong this cross part 51C.

Therefore, according to the 5th embodiment, except above-mentioned (1) is to (4), following effect can also be obtained.

(7) part 54S in outer joint portion 54 connecting periphery joint portion 45 and point D, by by point A and point D connection In line segment S2, the region Z1 that the line segment S3 of point B and point D connection and periphery joint portion 45 are surrounded, it is arranged at compared with line segment S2 Line segment S3 side.By using this structure, the interval D 1 of outer joint portion 54 and broken line 51, in outer joint portion 54 and periphery joint portion At 45 cross part 54C, it is set to be less than mid portion (part 54M etc. the) (figure of the long side direction along partition member 50 28).

Therefore, compared with parallel with broken line 51 with the entirety of outer joint portion 54 situation (Fig. 6 etc.), broken line 51 can be reduced It is stretched and the amount of movement with the outside joint portion of cross part 51C 54 of periphery joint portion 45, be furtherly to act on this intersection The pulling force of portion 51C, thus alleviate the stress concentration in this cross part 51C.

(8) by making part 54S being connected the cross part 54C and point D with periphery joint portion 45 in outer joint portion 54, shape Become along the line segment S3 of point B and point D connection is linear, such that it is able to make intersecting of outer joint portion 54 and periphery joint portion 45 Portion 54C and the interval D 1 of broken line 51, close to the minima (Figure 28) of possible range.

Therefore, so that broken line 51 and the outside joint portion of cross part 51C 54 of periphery joint portion 45 is stretched and the amount of movement, enter One step says the pulling force being to act on this cross part 51C close to minima, the stress concentration of this cross part 51C that can be eased Good result.

As a result, can reduce using the single method strengthening the reinforcement cross part 51C such as cloth, or according to circumstances do not consider This method.In the latter case it is not necessary to independent prepare to strengthen cloth, or enter the work being about to strengthen that cloth is combined with air bag 40 Industry, can suppress cost increase.

(the 6th embodiment)

Below, for the 6th embodiment embodying the present invention, illustrate with reference to Figure 29 to Figure 37.

As shown in figure 34, when becoming flat state, along length L1 in the direction of broken line 51, it is longer than side orthogonal with broken line 51 To length L2 partition member 50, in the 6th embodiment, by two parts 81 arranging in the vehicle width direction, 82 structures Become.As shown in Figure 29 to Figure 33, on two parts 81,82, so that what ora terminalis 83E, 84E of its end 83,84 were in alignment with each other State, makes end 83,84 overlap as the elongated banding of above-below direction.Two parts 81,82 pass through coincidence part 61 in banding with Boundary member between other parts (non-coincidence portion) is bonded to each other with the linear interior joint portion 63 extending along the vertical direction.Interior Joint portion 63 is from ora terminalis 83E, 84E of above-mentioned two part 81,82 at a distance from as broken line 51.Therefore, interior combination Portion 63 is arranged on broken line 51.

Pressure regulator valve 70 is arranged on above-mentioned partition member 50.More specifically, above-mentioned interior joint portion 63 one part ( It is the middle body of above-below direction in 6th embodiment) release combination.In the middle body of above-below direction, it is not provided with making two The interior joint portion 63 that part 81,82 combines.Releasing the position composition combining makes upstream side bulge 47 and downstream bulge 48 The inner opening portion 71 of the slit-shaped of connection.

Part corresponding with inner opening portion 71 on coincidence part 61 (near part, more precisely inner opening portion Part between 71 and ora terminalis 83E, 84E) constitute a pair of valve body 78,79.At a part of place, there is a pair of valve body 78,79 Coincidence part 61, is configured at upstream side bulge 47 before bulge 46 expands.In addition, inner opening portion 71 and two valve body 78, The 79 mid portion P1 being located at partition member 50.

And, at the both ends in the direction along interior joint portion 63, that is, upper end and bottom, pass through the coincidence part 61 of banding Above-mentioned periphery joint portion 45, identically with the partition member 50 of doubled state, overlapping with two cloth portions 43,44 of air bag 40 and tie Close, sew together.And, different from the 1st embodiment and the 2nd embodiment, coincidence part 61 is not rolled over to non-coincidence portion lateral bending.

Other structures are identical with the 1st embodiment.Therefore, to the labelling phases such as the 1st embodiment identical position, part Same label, detailed.

In the side air bag device of the 6th embodiment, if because side crash makes vehicle be impacted, from inflator 31 Supply expansion gas, then upstream side bulge 47 starts to expand.

In bulge 46, the partition member 50 of doubled state so that broken line 51 (interior joint portion 63) and opposed end 52, 53 compare the state configuration positioned at upstream side.And, this partition member 50, at two opposed ends 52,53, passes through outer respectively Joint portion 54,55 and cloth portion corresponding with air bag 40 43,44 combine.In addition, partition member 50 is along broken line 51 (interior combination Portion 63) the both ends (upper end and bottom) in direction on, be combined with two cloth portions 43,44 by periphery joint portion 45 respectively (with reference to Figure 30, Figure 31).Therefore, if upstream side bulge 47 starts to expand in the manner described above, the separation of doubled state Part 50 is stretched.To partition member 50, apply tension force along the direction of broken line 51 (interior joint portion 63) or orthogonal to that direction (with reference to Figure 34).

By this tension force, at partition member 50, mid portion P1 becomes the tensioning state (reference picture of roughly planar 33), top P2 and bottom P3 becomes makes broken line 51 (the interior joint portion 61) flexing positioned at upstream side compared with opposed end 52,53 State.

Here, in the 6th embodiment, meeting L1>On the partition member 50 of L2 relation, inner opening portion 71 is along broken line The direction setting (with reference to Figure 34) of 51 (interior joint portions 63).On the other hand, on this partition member 50, easily to short side direction (direction orthogonal with broken line 51) applies to be better than the tension force in long side direction (along the direction of broken line 51).Therefore, because above-mentioned opens The strong or weak relation of power, may make inner opening portion 71 open.

But, as shown in figure 35, for the coincidence part 61 comprising two valve body 78,79 positioned at upstream side bulge 47 For, rise the intrinsic pressure PI of upstream side bulge 47 with the supply of expansion gas G, from this overlapping direction of coincidence part 61 Both sides (vehicle-width direction both sides) apply.Two valve body 78,79 become self-styled closed state snugly into each other.Partition member 50 In the position in addition to pressure regulator valve 70, bulge 46 is divided into upstream side bulge 47 and downstream bulge 48 completely. Therefore, the expansion gas G in upstream side bulge 47, is limited through two valve body 78,79 and inner opening portion 71 And other positions, downstream side bulge 48 flow out.

If making upstream side bulge 47 be expanded with expansion with the supply of gas G, by the upstream increasing The intrinsic pressure PI of side bulge 47, as shown in figure 36, coincidence part 61 passes through inner opening portion 71 downstream side only at valve body 78,79 Bulge 48 side is pushed out.That is, valve body 78,79 reversion.Now, even if by making partition member 50 with plane tensioning, interior Peristome 71 is stretched and expands to vehicle-width direction, and two valve body 78,79 also contact in its leading section 78T, 79T and tie up Hold the state of closure.That is, by partition member 50 tensioning, inner opening 71 and valve body 78,79 applying are made with the power that it is opened. This power is maximum at inner opening portion 71, reduces with leaving from this inner opening portion 71, reaches minimum in valve body 78,79. As a result, pressure regulator valve 70 maintains closed valve state, thus the expansion gas G persistently limiting in upstream side bulge 47 passes through interior opening Downstream side bulge 48 flows out for oral area 71 and two valve body 78,79.

Additionally, as shown in figure 37, if when passenger P constrains, apply the external force being caused by the Vehicular side body 11 entering, make Bulge 46 is pressed (shriveling) outside car and deforms, then the tension force being applied on partition member 50 reduces.By this fall Low, the tension force being applied in inner opening portion 71 reduces.In addition, upstream side bulge is made by the above-mentioned deformation with bulge 46 47 intrinsic pressure further up, the mid portion P1 of partition member 50 is downstream pressed side bulge 48 side, makes this pars intermedia Divide the tension variation that P1 is subject to.Further, since rise is above-mentioned intrinsic pressure, the top P2 and bottom P3 of partition member 50 are pressed, Deform in the way of downstream side bulge 48 side is heaved.That is, top P2 and bottom P3 be deformed into above-mentioned before passenger restraint , thus easily there is tension variation in mid portion P1 in the shape of flexion reversion.Inner opening portion 71 is easily deformed, valve body 78th, 79 easy action.

In this condition, by the intrinsic pressure above-mentioned rising of upstream side bulge 47, inner opening portion 71 is opened.Separately Outward, valve body 79 and valve body 78 detached direction (outside car and in-car side) displacement to each other.If by the position of both Move, leading section 79T, 78T are separated from one another, make pressure regulator valve 70 become the state of valve opening, then the expansion gas of upstream side bulge 47 Body G as shown in arrow in Figure 37, by between inner opening portion 71 and two valve body 78,79 downstream side bulge 48 flow out.

With regard to the expansion in each bulge 47,48 pressure (intrinsic pressure) of gas G, each bulge 47 of passenger P, 48 sides The load that compression area, passenger P are subject to from air bag 40, corresponding to the entrance of the Vehicular side body 11 being entered to in-car due to impact How amount changes, roughly the same with the situation of explanation in the 1st embodiment (with reference to Figure 12).

Therefore, according to the 6th embodiment, can obtain and above-mentioned 1st embodiment identical effect.

In addition, in the 6th embodiment, because meeting L1>On the partition member 50 of the relation of L2, (interior along broken line 51 Joint portion 63) setting inner opening portion 71, so cannot expect as set along the direction being substantially orthogonal with broken line 51 (interior joint portion 63) The 1st embodiment putting inner opening portion 71 is the same, and stronger tension force is born in the direction along inner opening portion 71.

But, in the 6th embodiment, comprise the coincidence part 61 of two valve body 78,79, join before bulge 46 expands Put in upstream side bulge 47, this point is identical with the 1st embodiment.Therefore, it can two of the overlapping direction from coincidence part 61 The intrinsic pressure PI of side applying upstream side bulge 47.As a result, two valve body 78,79 can be made snugly into each other, realize limit The self-styled closed state that expansion processed gas G circulates between two valve body 78,79, limits the expansion in upstream side bulge 47 With gas G, downstream side bulge 48 flows out.

(the 7th embodiment)

Below, for the 7th embodiment embodying the present invention, illustrate with reference to Figure 38 to Figure 40.

In the 7th embodiment, the coincidence part 61 comprising two valve body 78,79 is configured before bulge 46 expands In downstream bulge 48, only this point is different from the 6th embodiment.Therefore, for the 6th embodiment identical position and Part labelling identical label, detailed.

In this case, comprise two valve body 78,79 coincidence part 61 carry out multiple different from the 6th embodiment Action.

Partition member 50 to bulge 46 supply expansion with gas G before, become make broken line 51 (interior joint portion 63) with Opposed end 52,53 compares the doubled state (with reference to Figure 38, Figure 39 A, Figure 39 B) positioned at upstream.

If making upstream side bulge 47 start to expand by supplying expansion gas G to bulge 46, in doubling shape Apply tension force along the direction of broken line 51 (interior joint portion 63) or orthogonal to that direction on the partition member 50 of state.Due to this Power, on partition member 50, mid portion P1 becomes the tensioning state (with reference to Figure 40) of roughly planar, top P2 and bottom P3 Become and make broken line 51 (the interior joint portion 63) flexion positioned at upstream side compared with opposed end 52,53.

Here, meeting L1>On the partition member 50 of the relation of L2, easily with respect to short side direction (with broken line 51 just The direction handed over) and apply to be better than the tension force in long side direction (along the direction of broken line 51).Therefore, along broken line 51 (interior joint portion 63) The inner opening portion 71 that direction extends, opens because of the strong or weak relation of mentioned strain.

But, at least leading section 78T, 79T of two valve body 78,79 become the state contacting with each other and closing.This is Because even if becoming plane and so that inner opening portion 71 is stretched by making partition member 50 tensioning, applying the power making it open, This power is also maximum in inner opening portion 71, reduces with leaving from inner opening portion 71, minimum in leading section 78T, 79T.Its As a result, the expansion limiting in upstream side bulge 47 is passed through between inner opening portion 71 and two valve body 78,79 with gas G, to Downstream bulge 48 flows out.

Additionally, because two valve body 78,79 are located at downstream bulge 48, the expansion of upstream side bulge 47 is used The pressure of gas G applies it is impossible to expect that two valve body 78,79 become self-styled closed state from the both sides of two valve body 78,79.

In two valve body 78,79 at least in the state of leading section 78T, 79T closure, if continue upward trip side expanded Supply expansion gas G in portion 47, on the other hand, applies the external force with passenger restraint and makes bulge 46 be pressed deformation, The tension variation then applying to partition member 50.In addition, with bulge 46 above-mentioned deformation, upstream side bulge 47 intrinsic pressure Further up, the mid portion P1 of partition member 50 is pressed by downstream side bulge 48 side, so that this mid portion P1 is born Tension variation, simultaneously the top P2 and bottom P3 of partition member 50 be pressed, with the side that downstream side bulge 48 side is heaved Formula deforms.That is, top P2 and bottom P3 is deformed into the shape that the above-mentioned flexion (with reference to Figure 38) before passenger restraint inverts , easily there is tension variation in mid portion P1 in shape.Thus allowing the deformation in inner opening portion 71 or the action of valve body 78,79.

In this condition, if inner opening portion 71 is opened, and two valve body 78,79 become the state opened, then Above-mentioned restriction is released from.By this releasing, from upstream side bulge 47, downstream side bulge 48 flows out expansion gas G.

Therefore, according to the 7th embodiment, can obtain and above-mentioned 1st embodiment identical effect.But, overlapping Portion 61 is configured in the 7th embodiment of downstream bulge 48, compared with the 6th embodiment, because being difficult in coincidence part 61 Apply tension force, so sealing substantially reduces.

Additionally, by interior joint portion 63 along broken line 51 direction setting above-mentioned 6th and the 7th embodiment, with interior joint portion 63, along compared with above-mentioned 1st and the 2nd embodiment of the direction setting that broken line 51 is substantially orthogonal, have excellent at the aspect of manufacturing cost Gesture.This is because, in the 1st and the 2nd embodiment, work not as broken line 51 in interior joint portion 63, on the other hand, the 6th And the 7th in embodiment, work as broken line 51 in interior joint portion 63.

Specifically, in the 1st and the 2nd embodiment, in order to obtain the partition member 50 of doubled state, two portions are made In the state of ora terminalis 58E, 59E alignment of part 56,57, end 58,59 is made to overlap as banding.By non-coincidence portion 62 with overlap Boundary member between portion 61 carries out the operation (joint portion 63 in setting) of two parts 56,57 combination, forms partition member 50. Then, need by this partition member 50 along broken line 51 doubling operation.But, in the 6th and the 7th embodiment, by carrying out The combination operation (joint portion 63 in setting) of two parts 81,82 outside in-car side and car, forms along interior joint portion 63 (broken line 51) partition member 50 of the state of doubling.Do not need the operation of partition member 50 doubling, correspondingly, it is possible to reduce side is pacified The number of working processes of full airbag apparatus, suppresses manufacturing cost.

In addition, in the case that the cloth portion 43,44 by air bag 40 is compared with the suture using at periphery joint portion 45, front The thermostability of person is more preferable.On the other hand, spray high-temperature expansion gas G from inflator 31.Accordingly, as air bag 40, and by one Block or two pieces of pieces of cloth sutures near inflator 31 are compared, and do not suture and the side by the doubling near inflator 31 of piece of cloth piece Method, more preferable in terms of thermostability.

But, in this case, the structure of the 1st and the 6th embodiment in application the 1st to the 7th embodiment, from More difficult for the angle manufacturing.This is because, the order of the operation of each joint portion, because air bag 40 is made up of piece of cloth piece, is set It is necessary for the order of outer joint portion 54,55 → interior joint portion, 63 → periphery joint portion 45.Except carrying out operation in the order described above Outside, the operation of outer joint portion 54,55 and interior joint portion 63 to be configured, so that coincidence part 61 is located at upstream side bulge 47, all extremely difficult.As a result, the knot of the 2nd and the 7th embodiment of downstream bulge 48 must be located at using coincidence part 61 Structure.Therefore, compared with the 1st and the 6th embodiment that the 2nd and the 7th embodiment is located at upstream side bulge 47 with coincidence part 61, because Easy to manufacture and there is advantage.

Additionally, the present invention can be embodied as other embodiment as follows.

<The item common with the 6th and the 7th embodiment>

As the coincidence part 61 of banding with the combination of air bag 40 it may be considered that following two.

One kind is so that coincidence part 61 is bent to non-coincidence portion, and in the direction (roughly vertical direction) along interior joint portion 63 Both ends, be combined with two cloth portions 43,44 by periphery joint portion 45.This is knot used in the 6th and the 7th embodiment Conjunction mode.

Another kind is so that coincidence part 61 is bent to non-coincidence portion, in the direction (roughly vertical direction) along interior joint portion 63 The both ends of coincidence part 61, are combined with two cloth portions 43,44 of air bag 40 together with non-coincidence portion.This is real with the 1st and the 2nd Apply the close combination of mode used in mode.If making in this way, to be not only the non-coincidence of partition member 50 Portion, also applies the tension force along broken line 51 (interior joint portion 63) direction to coincidence part 61, so two valve body 78,79 are difficult to beat Open, thus improving sealing.

<The item common with all embodiments>

The upper side member 56 of the partition member 50 of each embodiment is it is also possible to be partitioned into two pieces along broken line 51.Equally Ground, lower side member 57 can also be divided into two pieces along broken line 51.

In each embodiment, the opposed end 52 of partition member 50 can be swollen in upstream side with the cloth portion 43 of air bag 40 Combine it is also possible to combine in downstream bulge 48 in swollen portion 47.Similarly, the opposed end 53 of partition member 50 and air bag 40 cloth portion 44 can combine it is also possible to combine in downstream bulge 48 in upstream side bulge 47.

Alternatively, it is also possible to make one of opposed end 52,53 combine in upstream side bulge 47, and make another Combine in downstream bulge 48.

In each embodiment, inner opening portion 71 and interior joint portion 63 are not limited to orthogonal with the broken line 51 of partition member 50 Direction it is also possible to along obliquely intersect with it direction setting.

Air bag 40 can be its substantially overall structure being made up of bulge 46 or a part has and do not supplied To expansion with gas G the structure in non-bloating unexpansive portion.

In the 1st embodiment, as shown in Figure 41 A, Figure 41 B, as partition member 50, it is possible to use by a portion The structure that part 86 (pieces of cloth) is constituted.In this case, by part 86 along broken line 85 doubling.In the partition member from doubled state 50 broken line 85 at a distance from position setting in joint portion 63.The part being clamped with broken line 85 by interior joint portion 63 is made to become For forming a pair of coincidence part 61 of banding.Additionally, on the broken line 85 of this two coincidence parts 61, at least with inner opening portion 71 phase Corresponding position cuts open slit 87.Make valve body by becoming the part between inner opening portion 71 and slit 87 in two coincidence parts 61 Portion 73,74.

Change same as described above can be carried out for the 2nd to the 5th embodiment.

On coincidence part 61, the part that works as two valve body 73,74, is corresponding with inner opening portion 71 Partly (more precisely the part near inner opening portion 71, is the part between inner opening portion 71 and ora terminalis 58E, 59E).Cause This, as long as at least leading section 73T, 74T can contact and close in two valve body 73,74 when upstream side bulge 47 expands Close it is also possible to change the state of the not part corresponding with inner opening portion 71 (non-part nearby) on coincidence part 61.For example, for On coincidence part 61 not for the part corresponding with inner opening portion 71 (nearby non-part), can partially or entirely combine.Make For this associated methods, can be suture or bonding.By changing in the manner described above, can only make coincidence part 61 The upper part corresponding with inner opening portion 71 is as two valve body 73,74 actions, thus suppression is not corresponding partly unnecessary The phenomenon of action, for example, agitate the phenomenon of sound.

In addition it is also possible at least a portion of the position corresponding with inner opening portion 71 does not cut open on coincidence part 61 Grooving.

Partition member 50 and two valve body 73,74 can also be made up of part different from each other.

Broken line 51 on the partition member 50 of doubled state is it is also possible to tilt a certain amount of along the vertical direction.

In above-mentioned 1st to the 7th embodiment, to protect the side substitute of the chest PT of the main body as passenger P It is illustrated as a example bag apparatus, but the present invention can also be applied to comprise this chest PT and protect other positions of passenger P to be subject to Side air bag device to impacts such as side crash.Below, application examples is illustrated.And, Figure 43 A to Figure 45 B, respectively Show schematically the configuration status of the partition member 50 grade part on the bulge 46 of air bag 40, thin portion is all omitted or letter Change.Additionally, the position of each in figure labelling site is partition member.

《The side air bag device at the position to head PH scope for the chest PT of protection passenger P》

In such side air bag device, as shown in Figure 43 A, on being carried to vehicle and expand shape Under state, the bulge 46 of air bag 40 becomes and can expand near the side of chest PT to head PH and vertically extending Elongated shape.In the case of the application present invention in this side air bag device, bulge 46 can be by having pressure regulator valve (diagram is slightly) and the partition member 50 extending along roughly vertical direction, is separated into former and later two parts.On bulge 46, point Become upstream side bulge 88 every the rear side of part 50, front side becomes downstream bulge 89.In this case, partition member 50 vertically extend, but the direction that this partition member 50 extends is it is also possible to the requirement performance corresponding to air bag 40 changes.Point It can be the structure tilting with vertical direction every part 50.At this moment, partition member 50 and vertical curve angulation (inclination angle Degree) can there are multiple changes.

In addition, as shown in Figure 43 B, partition member can be disposed in parallel on the fore-and-aft direction of above-mentioned bulge 46 each other from Two positions opened.In order to distinguish two partition members, by the referred to as partition member 50F positioned at front side, being referred to as positioned at rear side Partition member 50R.In this case, bulge 56 is divided into rear, central, first three part by two partition members 50R, 50F. If on the basis of the partition member 50R of rear side, " afterwards ", portion became upstream side bulge 91, and it is swollen that " central " portion becomes downstream Swollen portion 92.In addition, if on the basis of the partition member 50F of front side, then " central " portion becomes upstream side bulge 93, " front " portion Become downstream bulge 94.From inflator 31 spray expansion with gas G with upstream side bulge 91, partition member 50R, The sequential flowing of trip side bulge 92 (upstream side bulge 93), partition member 50F and downstream bulge 94.Though in addition, not Diagram, but partition member can also be disposed in parallel on the fore-and-aft direction of bulge 46 away from each other more than or equal to 3 positions Put.

《The side air bag device at the position of waist PP to chest PT (shoulder PS) scope of protection passenger P》

In such airbag apparatus, as shown in Figure 44 A, on being carried to vehicle and in the state of expansion, gas The bulge 46 of capsule 40 becomes and can expand near the side of waist PP to chest PT (shoulder PS) and along the vertical direction thin Long shape.Bulge 46 is divided into upper and lower two positions by lattice 95 and check-valves 96.Lattice 95 can be by air bag 40 Two cloth portions 43,44 between the frenulum setting up pieces of cloth and formed constitute it is also possible to by making two cloth portions 43,44 contact with each other In the state of suture the seam that combines to form and constitute.

Inflator 31 is configured at the position being in a ratio of upside with lattice 95.Check-valves 96 are allowed from inflator 31 ejection Expansion gas flows to the position of downside from the position of lattice 95 upside, and limits it and flow to opposite direction.Lattice 95 The position of upside expands in the side of such as chest PT and shoulder PS, and the position of lattice 95 downside is in the side of such as waist PP Side expands.

In the case of the application present invention in this side air bag device, as shown in this Figure 44 A, upside position is permissible Extend along roughly vertical direction, and before and after's two parts are separated further into by the partition member 50U with pressure regulator valve (diagram is slightly). In addition, the position of downside can extend along roughly vertical direction, and enter one by the partition member 50L with pressure regulator valve (diagram is slightly) Step is divided into before and after's two parts.In this case, at the position of lattice 95 upside, make the part on rear side of partition member 50U Become upstream side bulge 97, and make the part of front side become downstream bulge 98.In addition, the portion in lattice 95 downside Position, makes the part on rear side of partition member 50L become upstream side bulge 99, and makes the part of front side become downstream bulge 100.

Additionally, although not shown, but partition member 50U, 50L can be provided only on lattice 95 upside position it is also possible to It is provided only on lower position.

As the variation of above-mentioned Figure 44 A, as shown in Figure 44 B, the position of lattice 95 upside, can replace along generally The partition member 50U that lower direction extends, is divided into upper and lower two parts by the partition member 50H extending along substantially fore-and-aft direction.? In this case, the part on the downside of partition member 50H becomes the upstream side bulge 101 of protection chest PT, and upper portion becomes The downstream bulge 102 of protection shoulder PS.

Additionally, although not shown, but the position of lattice 95 downside, the lattice extending along roughly vertical direction can be replaced Part 50L, is divided into upper and lower two parts by the partition member extending along substantially fore-and-aft direction.In this case, on partition member The part of side becomes the upstream side bulge of the first half of protection waist PP, and lower portion becomes the lower half of protection waist PP Downstream bulge.

As shown in Figure 45 A, bulge 46 can utilize in the front of inflator 31, and along this inflator 31 along substantially The lattice 103 that above-below direction extends, is roughly divided into former and later two parts.Lattice 103 and above-mentioned lattice 95 (reference picture 44A, Figure 44 B) in the same manner, can be made up of the frenulum set up pieces of cloth and formed between two cloth portions 43,44 of air bag 40, Can be constituted by suturing, in the state of so that two cloth portions 43,44 is contacted with each other, the seam combining to form.

The position of lattice 103 rear side becomes the inflator resettlement section 104 housing inflator 31.Lattice 103 front side Position becomes the protection portion 105 at the position in the range of the shoulder PS to waist PP of protection passenger P.Protection portion 105 can be by having Pressure regulator valve (not shown), and respectively along a pair of partition member 50U, 50L up and down that substantially fore-and-aft direction extends be divided into upper, in Centre, lower three parts.In this case, if on the basis of the partition member 50U of upside, " on " to become upstream side swollen in portion Swollen portion 106, " central " portion becomes downstream bulge 107.In addition, if on the basis of the partition member 50L of downside, then D score Portion becomes upstream side bulge 108, and " central " portion becomes downstream bulge 107.

From inflator 31 spray expansion with gas G successively via inflator resettlement section 104, upstream side bulge 106 and Partition member 50U, supplies to downstream bulge 107, meanwhile, successively via inflator resettlement section 104, upstream side bulge 108 and partition member 50L supply to downstream bulge 107.Thus, expansion gas is supplied to downstream by two paths Bulge 107.

In addition, although not shown but it is also possible to be not provided with lattice 103, bulge 46 by having pressure regulator valve (diagram is slightly), and The partition member extending along substantially fore-and-aft direction is divided into upper and lower two parts.Lower portion becomes and starts most to be supplied to Protect the upstream side bulge of waist PP from the expansion gas of inflator 31, upper portion becomes via upstream side bulge It is supplied to expansion gas and protect the downstream bulge of chest PT (shoulder PS).

The shape of partition member 50 is not limited to be formed linear it is also possible to constitute non-linear shape.There is pressure regulator valve (figure Show slightly) partition member 50, such as it is also possible to form L-shaped shape shown in Figure 45 B.In this case, bulge 46 can be by Partition member 50 is substantially divided into three parts along the vertical direction.The part of the oblique back upper place of partition member 50 becomes upstream side and expands Portion 111, the part of this oblique back lower place of partition member 50 becomes upstream side bulge 112, is become by the part that partition member 50 surrounds For downstream bulge 113.

In addition, although not shown, but partition member 50 can also form semicircle.

Additionally, the thought that above-mentioned change further relates to can be appropriately used for protecting side air bag device, the protection of chest PT Chest to head PH side air bag device, protection waist PP to chest PT (shoulder PS) side air bag device, The various air bags of the side air bag device of protection waist PP to head PH.

The present invention can also be applied to different types of airbag apparatus with side air bag device.

As one of example, there is the airbag device for protecting knee 120 shown in Figure 46 and Figure 47.As Figure 46 institute Show, the front lower place that airbag device for protecting knee 120 passes through in the lower limb of the passenger P being seated at seat (diagram is slightly) is swollen Swollen, protection is from calf PD of this passenger P to the position of knee PK.Airbag device for protecting knee 120 is housed in and for example arranges In the resettlement section 122 of steering column 121 lower section.Additionally, the co-pilot seat that this resettlement section 122 can also be arranged on the dash panel is taken advantage of The front lower place of visitor.

If detect impact, airbag device for protecting knee 120 are applied to vehicle by frontal collisions from front Air bag 123 start to expand using expansion gas, eject rearward from resettlement section 122, passenger P and steering column 121 it Between, passenger P two lower limb calf PD to the region of knee PK in expand launch.

In the case of another example, as shown in figure 47, the air bag 123 of airbag device for protecting knee 120, will in front and back a pair Cloth portion 123A is formed by being arranged at the periphery joint portion 124 of its circumference and being combined into banding.The bulge 125 of air bag 123 Have and house the inflator resettlement section 126 of inflator assemblies 30, protect the upstream side bulge 127 of knee PK, inflator is received Expansion in appearance portion 126 gas G to the upstream side bulge 127 guiding a pair of gas passage 128 and be located at upstream side swollen The downstream bulge 129 in the downstream in swollen portion 127.Inflator resettlement section 126 is formed at the bottom of bulge 125, upstream side Bulge 127 is formed at the top of bulge 125.Downstream bulge 129 is formed at upstream side bulge 127 and inflator Between resettlement section 126.Two gas passages 128 are formed at the downstream bulge of vehicle-width direction (left and right directions of Figure 47) 129 both sides.Inflator resettlement section 126 and two gas passages 128 and downstream bulge 129 are by with front being in-between The lattice 131 of substantially U-shaped setting separates.Lattice 131 is with above-mentioned lattice 95,103 likewise it is possible to by air bag The frenulum setting up pieces of cloth formation between 123 former and later two cloth portions 123A constitutes it is also possible to by making former and later two cloth portions 123A Suture in the state of contacting with each other, that is, the seam being combined into is constituted.

Partition member 50 is set between upstream side bulge 127 and downstream bulge 129.Partition member 50 becomes With bulge 125 expansion and during plane tensioning, making the length along long side direction (left and right directions of Figure 47), be longer than with The strip of the length of the orthogonal short side direction of this long side direction.

Partition member 50 is constituted by two parts 56,57 along the direction of broken line 51 being vehicle-width direction arrangement.Two The interior joint portion 63 that individual part 56,57 passes through to extend along the direction being substantially orthogonal with broken line 51 is combined.In the portion crossing broken line 51 Point, it is not provided with the interior joint portion 63 making two parts 56,57 combine.In the part being not provided with interior joint portion 63 as mentioned above, that is, Release the position combining, constitute the inner opening portion of the slit-shaped making upstream side bulge 127 connect with downstream bulge 129 71.

Additionally, in Figure 47, partition member 50 becomes doubled state, so that broken line 51 position compared with opposed end 52,53 State in upstream side (upside of Figure 47) configures in the bulge 125 of unexpansive deployed condition.Two opposed ends 52,53 Combined with corresponding cloth portion 123A by outer joint portion 54,55.Partition member 50 is along the two of the direction (long side direction) of broken line 51 End (the left and right both ends of Figure 47), is combined with two cloth portion 123A by a part (upper end) for above-mentioned lattice 131, that is, Sew together.

Become said structure by making airbag device for protecting knee 120, then the expansion gas G spraying from inflator 31 Supplied to upstream side bulge 127 by two gas supply parts 128.Due to this expansion gas G, upstream side bulge 127 Start to expand.Deformed, intrinsic pressure rising by making upstream side bulge 127 be pressed with the external force that passenger restraint applies, adjust Pressure valve 70 valve opening, the expansion gas G in upstream side bulge 127 is supplied to downstream bulge 129.Expand in upstream side After portion 127, downstream bulge 129 expands.As a result, can be using the intrinsic pressure relatively early upstream side bulge 127 rising in morning The higher knee PK of resistance to impact in phase constraint and protection passenger's P lower limb, using being later than the intrinsic pressure rising of upstream side bulge 127 Downstream bulge 179 constrain and protect poor calf PD of resistance to impact.

As another example of the 5th embodiment, as shown in figure 48, can be changed to, making will in outer joint portion 54 The shape of part 54S of periphery joint portion 45 and point D connection, becomes convex to point C compared with the line segment S3 connecting point B and point D The arc-shaped rising.

So, the cross part 54C of outer joint portion 54 and periphery joint portion 45, with the interval D 1 of broken line 51 also close to may The minima of scope.

Therefore, broken line 51 and the outside joint portion of cross part 51C 54 side of periphery joint portion 45 are stretched and the amount of movement, enter One step say be act on the pulling force of cross part 51C at minima, this cross part 51C that can be eased stress concentration good Good effect, obtains and above-mentioned (8) identical effect.

Additionally, Figure 48 is merely represented in the part being in a ratio of in-car side on air bag 40 with the middle body of vehicle-width direction, But it is also identical for the part outside car.

On outer joint portion 54,55, by part 54M of one group of the one group of point D connection of point D and downside in upside, such as Figure 48 Shown it is also possible to form following arc-shapeds, its by apart from this two point D more remote and more from broken line 51 away from the way of raised.

Can also be to tie by the line segment S2 connecting point A and point D, by the line segment S3 of point B and point D connection and periphery Conjunction portion 45 surround region Z1 in, compared with above-mentioned line segment S2 positioned at above-mentioned line segment S3 side be condition, change outer joint portion 54 in The position of part 54S that periphery joint portion 54 and point D are connected.

In another example of the 5th embodiment and above-mentioned Figure 48, the periphery 50C of partition member 50 is not necessarily intended to edge Outer joint portion 54,55.Accordingly, as partition member 50, it is possible to use (periphery 50C becomes with the 1st embodiment identical structure Linear for a word).

In the respective embodiments described above, inflator assemblies 30 can also be arranged on the outside of air bag 40.In this situation Under, inflator 31 and upstream side bulge 47,88,91,93,97,99,101,106,108,111,112,127 can also pass through Pipeline connects, and is derived from the expansion gas G of inflator 31 via the supply of this pipeline.

In the respective embodiments described above it is also possible to replace the backrest 14 of seat 12, set in Vehicular side body 11 Put resettlement section 18, air bag module AM is set herein.

(the 8th embodiment)

Below, for the 8th embodiment embodying the present invention, by with the difference of the 1st embodiment centered on, ginseng Illustrate to Figure 53 according to Figure 49.

In order to the feature of the 8th embodiment is described, the structure for backrest 14 illustrates.As Figure 49 and Figure 50 institute Show, backrest 14 has seat back main body 22 and be arranged at this seat back main body 22 in the vehicle width direction two A pair collateral support part 23 of side.Seat back main body 22 tilted rearward, from Backside support passenger P.Two collateral support parts 23 from Seat back main body 22 forwards projects, and restriction is seated on Chain cushion 13 and leans on the passenger P's of seat back main body 22 The motion of vehicle-width direction.

In above-mentioned air bag 40, inner opening portion 71 is set to as shown in figure 49, expands expansion in upstream side bulge 47 Under state, the 23F foremost of the collateral support part 23 on seat 12 forwards leaves the position of 85mm and from foremost 23F rearward leaves in the region Z2 between the position of 15mm.Here the 23F foremost of so-called collateral support part 23, is seat Most positions are forwards projected from seat back main body 22 on backrest 14.Configuration at the above-mentioned position in inner opening portion 71, leads to Cross when bulge 46 expands, in the position of the side becoming fore-and-aft direction pars intermedia of the upper part of the body (such as chest PT) of passenger P Put, each opposed end 52,53 of partition member 50 is combined with corresponding balloon portion 43,44 by two outer joint portions 54,55 And realize (with reference to Figure 50).

If in the state of upstream side bulge 47 expands expansion, inner opening portion 71 is located at the front of above range, then In the case that there is barrier in the front of upstream side bulge 47, the expansion of upstream side bulge 47 launches to be hampered by barrier Hinder.In addition, if in the state of upstream side bulge 47 expands expansion, inner opening portion 71 is located at the rear of above range, then Upstream side bulge 47 may be difficult to make the sidepiece of backrest 14 to destroy and forwards eject.

Air bag 40 expands expansion in the way of shown in Figure 11 A to Figure 11 C.Expanding the initial stage launched, by upstream The above-mentioned expansion of side bulge 47, it will folded state is released with the order contrary with this upstream side bulge 47 fold sequence. If upstream side bulge 47 releases (expansion) folded state while expanding, the sidepiece of backrest 14 is pressed by air bag 40 Press and destroy, the seat cushion 16 of backrest 14 is extruded by air bag 40 simultaneously, in fracture reservations (with reference to Fig. 3) place's fracture.

Here, in the present embodiment, inner opening portion 71 is located at in the state of expanding expansion in above-mentioned bulge 47 Mode in the Z2 of region is arranged.In other words, inner opening portion 71 is rearward left from the 23F foremost of collateral support part 23 with being located at Mode in front of the position of 15mm is arranged.Thus, being not susceptible to may in the case of inner opening portion 71 is located at above-mentioned zone Z2 rear The phenomenon occurring, i.e. upstream side bulge 47 is difficult to make the sidepiece of backrest 14 to destroy and forwards eject.

And, air bag 40 is as shown in figure 51, lean on a part (inflator assemblies 30 near part) is retained in seat In the state of in the back of the body 14, eject through the position destroyed from this backrest 14.

Then, it is supplied to the upstream side bulge 47 of expansion gas G as shown in figure 50, in Vehicular side body 11 and just Seat in the passenger P on seat 12 the upper part of the body (chest PT etc.) latter half of between forwards release folded state, Launch.

Here, in the present embodiment, inner opening portion 71 according to upstream side bulge 47 expand launch in the state of Mode in the Z2 of region is arranged.In other words, inner opening portion 71 is with positioned at the 23F foremost from Vehicular side body 23 forwards The mode leaving the rear of the position of 85mm is arranged.Thus, it is not likely to produce inner opening portion 71 and be located at the feelings in front of above-mentioned zone Z2 Under condition it may happen that phenomenon, i.e. in the case of having barrier in front of upstream side bulge 47, upstream side bulge 47 swollen Swollen expansion is hindered by barrier.

Finally, air bag 40 completes to expand in the way of shown in Figure 49 and 50 and launches.Additionally, the expansion of air bag 40 launches process In stroke, as shown in figure 12 with the intrinsic pressure, compression area of air bag 40 and the relation of load.

According to the 8th embodiment described in detail above, on the basis of the effect being obtained by the 1st embodiment, can also obtain To following peculiar effects.

The bulge 46 of air bag 40 be divided into by laminar partition member 50 be supplied to expansion gas upstream side swollen Swollen portion 47 is adjacent with the front side of upstream side bulge 47 and downstream of be supplied to expansion gas via upstream side bulge 47 Bulge 48.Setting inner opening portion 71 and pressure regulator valve 70 at this partition member 50, above-mentioned inner opening portion 71 makes upstream side expand Connect between portion 47 and downstream bulge 48, above-mentioned pressure regulator valve 70 makes inner opening portion 71 be opened and closed by a pair of valve body 73,74. Use following structures as two valve body 73,74, it is when upstream side bulge 47 expands and before constraint passenger P, upper Expansion gas G in trip side bulge 47 presses and contacts with each other, so that inner opening portion 71 closes, expands in upstream side When portion 47 expands and constrains passenger P, using the external force that applies with above-mentioned constraint, bent by partition member 50 and each other from Open, inner opening portion 71 is opened.Additionally, inner opening portion 71 is set to, in the state of launching making upstream side bulge 47 expand, It is located at the position forwards leaving 85mm from the 23F foremost of collateral support part 23, and rearward leave 15mm's from 23F foremost In region Z2 between position (Figure 49).

Therefore, it can to make lattice 50 be located at by upstream side bulge 47 passenger P is entered during row constraint from side be subject to by The position of pressure, easily will be transferred to partition member 50 with the external force of passenger P constraint.Partition member 50 is easily made to bend and make two Individual valve body 73,74 away from each other (easily by pressure regulator valve 70 valve opening), such that it is able to make inner opening portion 71 suitably open, by air bag 40 intrinsic pressure is adjusted to suitable value.

In addition, being located in front of above-mentioned zone Z2 with expanding inner opening portion 71 in the state of expansion in upstream side bulge 47 Situation is different, even if there is barrier it is also possible to unimpeded make upstream side bulge 47 in the front of upstream side bulge 47 Expand and launch.In addition, being located at above-mentioned zone Z2 rear with inner opening portion 71 in the state of upstream side bulge 47 expansion expansion Situation different, upstream side bulge 47 can make the sidepiece of backrest 14 destroy, make this upstream side bulge 47 from seat Backrest 14 forwards ejects.

(the 9th embodiment)

Below, for the 9th embodiment embodying the present invention, centered on the aspect different from the 1st embodiment, Illustrate with reference to Fig. 9, Figure 54 and Figure 55.

In the 9th embodiment, as shown in figure 55, the bulge 46 of swelling state has following outer shape：It is being provided with The position of partition member 50, that is, on the section orthogonal with fore-and-aft direction, size L3 along the vertical direction with along seat 12 The ratio of size L4 of width is 1.1 to 5.0.

In above-mentioned air bag 40, when upstream side bulge 47 expands, partition member 50 forward side expands and becomes oval The first half of body.Thus, as shown in figure 54, upstream side bulge 47 can be modeled as longitudinal long ellipsoid and consider.This Outward, in Figure 54 the positional representation of labelling site in the bulge 46 of swelling state, setting partition member 50 position with front The orthogonal section CS of rear direction.

The upper and lower of the outer shape of bulge 46 on this ellipsoidal major diameter (length of major axis) and above-mentioned section CS To length L3 quite, corresponding with length L1 of above-mentioned partition member 50 long side direction.In addition, ellipsoidal minor axis (short axle Length) in vehicle seat in bulge 46 outer shape in the part that extends in the vehicle width direction, with above-mentioned section CS Length L4 of chair 12 width is quite, corresponding with short side direction length L2 of above-mentioned partition member 50.

In addition, the outer shape on above-mentioned section CS can be by ratio (L3/L4) table of above-mentioned length L3 and length L4 Existing.Ratio (L3/L4) if greater than 1.0, then becomes longitudinally long outer shape.

Here, when the expansion with upstream side bulge 47 makes partition member 50 to bend planar tensioning, to this The position that partition member 50 is provided with inner opening portion 71 applies tension force.By in this tension force, the definition along short-axis direction applying is horizontal stroke To tension force, it is longitudinal tension force along the definition that long axis direction applies.

There is dependency relation between the difference (Tension Difference) of this two horizontal tensions and longitudinal tension force and ratio (L3/L4).Figure 55 expressions, remaining constant value (250mm) by making length L3, and make length L4 change and so that ratio (L3/L4) is changed In the case of, how mentioned strain difference changes corresponding to this ratio (L3/L4).

Can get following conclusions from above-mentioned Figure 55.

When ratio (L3/L4) is " 1.0 ", when that is, outer shape is circular, two tension force (tension force) of transverse direction and longitudinal direction Mutually the same, the difference of two tension force is " 0 ", and inner opening portion 71 is easily opened.The difference of mentioned strain is little in ratio (L3/L4) In or be equal to " 1.6 " region in, increase with the increase of this ratio (L3/L4), ratio (L3/L4) be " 1.6 " when Greatly, it is more than in ratio (L3/L4) in the region of " 1.6 ", reduce with the increase of this ratio (L3/L4).If this tension force Difference is very big, then make the power that inner opening portion 71 closes much be better than the power making it open, thus inner opening portion 71 easily closes.? When ratio (L3/L4) is " 1.6 ", the difference of tension force is maximum, and inner opening portion 71 is easiest to close.Think and in ratio (L3/L4) be In the range of " 1.1 " to " 5.0 ", the difference of tension force is the size that can make inner opening portion 71 closure.

On the other hand, if due to side crash etc., Vehicular side body 11 enters to in-car side, then pass through this Vehicular side body 11, swollen The bulge 46 of swollen state is pressed by the upper part of the body (chest PT etc.) of passenger P, makes this upper part of the body (chest PT etc.) restrained.

Now, the external force due to applying with passenger restraint, bulge 46 is pressed and deforms.Accompany with this, for Partition member 50, applies stronger tension force in the width of seat 12 and reduces, and the tension force that above-below direction applies increases. By the change of this two tension force, the difference of the tension force of both direction reduces, curved by partition member 50 two valve body 73,74 Bent and away from each other, inner opening portion 71 is opened.

Additionally, make the inner opening portion 71 of closure open required adjoint passenger restraint and be applied to bulge 46 external force and There is dependency relation between above-mentioned ratio (L3/L4).

Increase (outer shape on above-mentioned section CS for the bulge 46 is longer along the vertical direction) with ratio (L3/L4), In order that the inner opening portion 71 of closure opens, need to apply larger external force with passenger restraint to bulge 46.But, if Apply very big external force in bulge 46, be then applied to the upper part of the body (the such as chest of passenger P in passenger restraint from air bag 40 PT load) also increases.According to experiment, if ratio (L3/L4) be less than or equal to " 5.0 ", even if apply external force it is also possible to The load that passenger P is subject to is made to be in permissible range.That is, ratio (L3/L4) is the difference of tension force when " 5.0 " and this ratio (L3/L4) identical for the difference of tension force when above-mentioned " 1.1 ".

If it is considered that above-mentioned situation, then before passenger restraint, inner opening portion 71 is closed, to passenger P during suppression passenger restraint Apply excessive load, and from the viewpoint of so that inner opening portion 71 is opened, ratio (L3/L4) is the value in the range of 1.1 to 5.0 This point is critically important.Preferably this ratio (L3/L4) is 1.2 to 4.5, particularly preferred 1.4 to 2.0.With the upper part of the body of passenger P (mainly chest PT) is protection object, on the side air bag device of the shorter present embodiment of length L3, ratio (L3/ L4) it is set to " 1.6 ".

Below, the effect for present embodiment illustrates.

During air bag 40 expands expansion, as shown in Figure 11 C, add up to if the width W1 in inner opening portion 71 is more than this Value (=2 W2), then leading section 73T, 74T separation.Pressure regulator valve 70 becomes the state of valve opening, and above-mentioned circulation limits and is released from.Logical Cross this restriction cancellation, the expansion gas G in upstream side bulge 47 can be made to pass sequentially through inner opening portion 71 and two valve bodies Flow out to bulge 48 between portion 73,74.

Here, as described above, increasing (the outer shape edge of the bulge 46 on section CS with ratio (L3/L4) Above-below direction is longer), need very big external force for making inner opening portion 71 open.But, if applying very big on bulge 46 External force, then during passenger restraint from air bag 40 be applied to the upper part of the body (such as chest PT) of passenger P load also very big.

With regard to this point, if ratio (L3/L4) is less than or equal to " 5.0 ", even if applying external force, passenger P is subject to Load is also in permissible range.In the present embodiment, ratio (L3/L4) is set to be less than the 1.6 of 5.0.Therefore, by right The above-mentioned suitable setting of ratio (L3/L4), can suppress to make inner opening portion 71 open the excessive situation of required external force.Its knot Really, when appropriately sized external force being applied on bulge 46 with passenger restraint, the difference of above-mentioned longitudinal and horizontal tension force Value reduces, and inner opening portion 71 opens.When inner opening portion 71 opens, excessive load will not be applied to passenger.

According to the 9th embodiment described in detail above, on the basis of according to the available effect of the 1st embodiment, also Following distinctive effect can be obtained.

The bulge 46 of air bag 40, by laminar partition member 50, is divided into the upstream side being supplied to expansion gas G Bulge 47 and adjacent with the front side of upstream side bulge 47 and be supplied under expansion gas via upstream side bulge 47 Trip side bulge 48.Inner opening portion 71 and pressure regulator valve 70 are provided with this partition member 50, above-mentioned inner opening portion 71 is formed along car The slit-shaped that the width of seat 12 extends, makes upstream side bulge 47 and downstream bulge 48 connect, above-mentioned pressure regulation Valve 70 has a pair of the valve body 73,74 making inner opening portion 71 be opened and closed.Following structures can be used as two valve body 73,74 (Figure 11 A), i.e. when upstream side bulge 47 expands and before constraint passenger P, by the bulge gas in upstream side bulge 47 Body G presses and contacts with each other, and so that inner opening portion 71 is closed.In addition, following structures can be used as two valve body 73,74 (Figure 11 C), i.e. when upstream side bulge 47 expands and before constraint passenger P, by the bulge gas in upstream side bulge 47 Body G presses and contacts with each other, and so that inner opening portion 71 is closed, when upstream side bulge 47 expands and constrains passenger P, by adjoint The external force that this constraint applies, is bent by partition member 50 and away from each other, inner opening portion 71 is opened.Additionally, swelling state Bulge 46 there are following outer shape, i.e. in the position being provided with partition member 50, and the section CS orthogonal with fore-and-aft direction On, make the length (L4) of the length (L3) of above-below direction and the width of seat 12 ratio (L3/L4) be 1.1 to 5.0 (with reference to Figure 54).

Therefore, it can, before passenger restraint, make inner opening portion 71 close using being better than longitudinal horizontal tension force, thus only Make the intrinsic pressure rising of upstream side bulge 47.Furthermore it is possible in passenger restraint, excessive load not being applied to passenger P and opens Inner opening portion 71, makes the intrinsic pressure reduction of upstream side bulge 47, makes the intrinsic pressure rising of downstream bulge 48 simultaneously.Thus, may be used So that inner opening portion 71 suitably closes, suitably adjustment upstream side bulge 47 and downstream bulge 48 are respective intrinsic pressure.

Additionally, the 8th and the 9th embodiment can be embodied as the other embodiment of described below.

<With regard to partition member 50>

The upper side member 56 of partition member 50 can be divided into two parts along broken line 51.Similarly, lower side member 57 Two parts can be divided into along broken line 51.

The opposed end 52 of partition member 50 can be combined with the cloth portion 43 of air bag 40 in upstream side bulge 47, Can combine in downstream bulge 48.Similarly, the opposed end 53 of partition member 50 can be in upstream side bulge 47 Interior be combined with the cloth portion 44 of air bag 40 it is also possible in downstream bulge 48 combine.

Alternatively, it is also possible to make one of opposed end 52,53 combine in upstream side bulge 47, and make another Combine in downstream bulge 48.

Inner opening portion 71 and interior joint portion 63, are not limited to along the direction orthogonal with the broken line 51 of partition member 50, permissible Along tilting the direction intersected with it, the direction setting it is also possible to along broken line 51 is set.

As partition member 50, it is possible to use the structure being made up of single part (pieces of cloth).

On coincidence part 61, work as two valve body 73,74 is the part corresponding with inner opening portion 71 (more precisely the neighbouring part in inner opening portion 71, is the part between inner opening portion 71 and ora terminalis 58E, 59E).Therefore, exist When upstream side bulge 47 expands, if two valve body 73,74 at least leading section 73T, 74T contact and close, overlapping It is also possible to change the form of not corresponding with inner opening portion 71 part (non-part nearby) in portion 61.For example, for coincidence part 61 On not for the part corresponding with inner opening portion 71 (nearby non-part), can be combined with a part or whole part.As this combination Method, can suture it is also possible to bonding.By changing in the manner described above, only make relative with inner opening portion 71 on coincidence part 61 The part answered, as two valve body 73,74 actions, suppresses not corresponding part to carry out the phenomenon of waste motion, such as fluctuation Phenomenon.

In addition it is also possible at least a portion of the position corresponding with inner opening portion 71 does not cut open on coincidence part 61 Grooving.

Partition member 50 and two valve body 73,74 can also be made up of part different from each other.

The broken line 51 of the partition member 50 of doubled state can be a certain amount of with above-below direction inclination.

Release the position of the combination between two interior joint portions 63, be not necessarily positioned to the part across broken line 51, The position deviateed from broken line 51 can be arranged on to the direction orthogonal with this broken line 51.

The position of the combination between two interior joint portions 63 of releasing can arrange multiple.

Comprise a pair of coincidence part 63 of two valve body 73,74, upstream side can be replaced before the expansion of bulge 46 Bulge 47, and it is arranged on downstream bulge 48.

Turned back by the broken line 51 extending along long side direction and end 52,53 is close to becoming doubling relatively towards each other The partition member 50 of state, can be so that broken line 51 state positioned at downstream compared with opposed end 52,53 configures non-swollen On the bulge 46 of swollen deployed condition.In this case it is also possible to the coincidence part 61 of two valve body 73,74 will be comprised, Bulge 46 configures on downstream bulge 48 before expanding.

<With regard to bulge 46>

Air bag 40 can be its substantially overall structure as shown in above-mentioned embodiment, being made up of bulge 46, also may be used To be to have in a part not to be supplied to expansion gas G and non-bloating unexpansive portion.

Bulge 46 can be divided into three with upper bit by partition member.In this case, for bulge 46 On across partition member and expansion two adjacent positions of the flow direction of gas G, the part positioned at upstream side is upstream side Bulge, the part positioned at downstream is downstream bulge.And, in this two upstream side bulges and downstream bulge Between partition member setting pressure regulator valve.

For the bulge 46 of swelling state, it is provided with the section CS orthogonal with fore-and-aft direction of the position of partition member 50 Outer shape it is also possible to be changed for condition with ratio (L3/L4) for 1.1 to 5.0.

<With regard to inflator assemblies 30>

Inflator assemblies 30 can be arranged on the outside of air bag 40.In this case, inflator 31 is swollen with upstream side Swollen portion 47 is connected by pipeline, can supply the expansion gas G from inflator 31 swollen to upstream side via this pipeline Swollen portion 47.

<Protection object with regard to side air bag device>

In the above-described embodiment, to protect the side air bag device of the upper part of the body (such as chest PT) of passenger P As a example illustrate, but the present invention can also be applied to protect other positions such as chest PT of passenger P to the position of head, waist Each position such as portion to the position of chest (shoulder), the position of waist to head is subject to the airbag apparatus of the impacts such as side crash.

<Other>

Present invention could apply to following side air bag devices, it is with towards before backrest 14 and vehicle The attitude in the direction of Fang Butong, such as side configures on the vehicle of seat 12, right from side (fore-and-aft direction of vehicle) In the case that this seat 12 applies impact, protection passenger P is subject to above-mentioned impact.

Additionally, protection object increases along the vertical direction with air bag module AM and so that length L3 is increased, adjoint therewith, ratio (L3/L4) it is more than preferred value.For example, on the side air bag device at the protection position to chest (shoulder) for the waist, than Value (L3/L4) can also be set greater than about the value " 4.3 " of above-mentioned embodiment.

In the vehicle of side air bag device of the application present invention, it is not limited to home vehicle, also comprise various industry cars ?.

The invention is not restricted to vehicle it is also possible to be applied to the side of setting on other vehicle seats such as aircraft, ship Side air bag device.

Claims (2)

1. a kind of side air bag device, it is constrained and is protected using air bag (40) and rides on vehicle seat (12) Passenger (P),

It is characterized in that,

Above-mentioned vehicle seat (12) comprises backrest (14) and is arranged at above-mentioned backrest (14) both sides for a pair Collateral support part (23), each collateral support part (23) is prominent to the front of the vehicles, and has (23F) foremost,

Said apparatus are contained in a sidepiece of above-mentioned backrest (14),

Above-mentioned air bag (40) has bulge (46), and it is using corresponding to applying from the side of above-mentioned vehicle seat (12) Impact and the expansion that supplies from inflator (31), with gas (G), forwards launches in the side of above-mentioned vehicle seat (12) Expand,

Above-mentioned bulge (46) is divided into multiple positions by laminar partition member (50), and it includes at least and is supplied to above-mentioned expansion With the upstream side bulge (47) of gas (G) and adjacent with the front side of above-mentioned upstream side bulge (47) and via on above-mentioned Trip side bulge (47) is supplied to the downstream bulge (48) of expansion gas (G),

In above-mentioned partition member (50) upper setting pressure regulator valve (70),

Above-mentioned pressure regulator valve (70) has：Peristome (71), it makes above-mentioned upstream side bulge (47) and above-mentioned downstream bulge (48) connect between；And make a pair of valve body that above-mentioned peristome (71) is optionally opened and closed,

Two valve body (78,79) of above-mentioned pressure regulator valve (70), when expanding in above-mentioned upstream side bulge (47) and constrain above-mentioned Before passenger (P), contacted with each other by expansion gas (G) pressing in above-mentioned upstream side bulge (47), by above-mentioned peristome (71) close, when above-mentioned upstream side bulge (47) expands and constrains above-mentioned passenger (P), apply using with this constraint External force, separated from one another by above-mentioned partition member (50) bending, above-mentioned peristome (71) is opened,

Above-mentioned peristome (71) is set to, and in the state of above-mentioned upstream side bulge (47) launches to expand, it is located at from above-mentioned (23F) foremost of the above-mentioned collateral support part (23) on vehicle seat (12) forwards leaves the position of 85mm and from upper State (23F) foremost rearward to leave in the region between the position of 15mm.

2. side air bag device as claimed in claim 1 it is characterised in that

Above-mentioned partition member (50), by making end overlap as banding, and non-in the state of the ora terminalis alignment of two parts Boundary portion office between coincidence part (62) and coincidence part (61) makes both parts be combined and is formed,

Above-mentioned peristome (71) releases combination by a part for the bound fraction to above-mentioned two part and is formed,

The upper position corresponding with above-mentioned peristome (71) of above-mentioned coincidence part (61) becomes above-mentioned two valve body (78,79).