CN104228748A - side airbag apparatus - Google Patents
side airbag apparatus Download PDFInfo
- Publication number
- CN104228748A CN104228748A CN201410256727.6A CN201410256727A CN104228748A CN 104228748 A CN104228748 A CN 104228748A CN 201410256727 A CN201410256727 A CN 201410256727A CN 104228748 A CN104228748 A CN 104228748A
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- Prior art keywords
- mentioned
- air bag
- expansion
- folding
- expansion chamber
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/237—Inflatable members characterised by the way they are folded
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
- B60R2021/23146—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection seat mounted
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/2334—Expansion control features
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
A side airbag apparatus is disclosed. According to the side airbag apparatus, a folded portion of a top side in the unfolding direction of the airbag can be freely unfolded. The side airbag apparatus comprises a gas generator assembly (30) and an airbag (40). The gas generator assembly (30) is arranged in the vicinity of a side of the chest region of a passenger sitting in a vehicle seat, to eject inflation gas in response to impact applied from a lateral direction of a vehicle. The airbag (40) has folded portions (66, 68, 69, 72 and 73) which are acceptedin when the airbag is in a folded condition, and unfolded and filled between a region which extends from the chest area to the head of the passenger and applied to a side wall of the vehicle through the inflation gas from the inflator assembly (30). The folded portions (68 and 72) of the top side of the airbag (40) with respect to an unfolding direction are folded back inwards the vehicle (front side of Figure 12(a)).
Description
Technical field
The present invention relates to a kind of side air bag device; it can when being applied with impact from side to vehicle because of side collision etc.; be seated at vehicle seat used on occupant and vehicle sidewall portion chien shih airbag deployment and expand, thus the position of protection from the chest of occupant to head is not hit.
Background technology
As protection be seated at vehicle seat used on the upper part of the body of occupant by the device of impact caused by side collision etc., well-known have a kind of side air bag device comprising air bag and charging blower.In this side air bag device, air bag is together accommodated in vehicle seat used back of seat (backrest) with folding state and charging blower.And, when applying to impact to the sidewall portion of vehicle, such as side car door etc. from side because of side collision etc., supply expansion gas from charging blower to air bag.Airbag deployment also expands, so that by its part, the state stayed in back of seat bloats from vehicle seat used.Afterwards, launch in the narrow space of air bag also between occupant and sidewall portion and expand.This air bag is the upper part of the body of occupant restraint between the upper part of the body and the sidewall portion entered inside car gradually of occupant, and relax by sidewall portion be delivered to the above-mentioned upper part of the body, from the impact of side.
As a technical scheme of above-mentioned side air bag device, such as, there is the technical scheme described in patent documentation 1.In this side air bag device, charging blower to be configured in back of seat and be seated at vehicle seat used on occupant chest side near.And during according to the impact caused by side collision etc. from charging blower ejection expansion gas, this expansion gas flows with front upward in the air bag of folded state.Air bag under the effect of this expansion gas, from be seated at vehicle seat used on occupant chest to the position and the sidewall portion of vehicle of head towards the front of vehicle and above launch and expand.
In addition, record in patent documentation 2 and a kind ofly retrain and protect the side air bag device at the position different from above-mentioned position of the upper part of the body of occupant.
In any one side air bag device described in above-mentioned patent documentation 1 and patent documentation 2, under the state of airbag fold, as expansion direction top, the folding part of upper end all turns back.
Patent documentation 1: Japanese Unexamined Patent Publication 2007-203939 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2010-070178 publication
Summary of the invention
the problem that invention will solve
But, in the side air bag device described in patent documentation 1 and patent documentation 2, supply expansion gas and air bag is expanded time, this air bag turn back, the folding part of upper end launches sometimes outside car.In this case, the folding part of the upper end of air bag releasing turn back state (expansion) process in be likely contacted with the sidewall portion of vehicle, and hinder it to launch smoothly because of friction.
To launch toward the front from rear utilizing expansion gas and the air bag expanded, when the top as its expansion direction, the folding part of front end turn back, also can produce the problems referred to above as described above.
Namely the present invention completes in view of such actual conditions, its object is to, and provides a kind of side air bag device that the folding part on the top of the expansion direction of air bag can be made to launch swimmingly.
for the scheme of dealing with problems
The side air bag device solving above-mentioned problem comprises: charging blower, its be configured in be seated at vehicle seat used on occupant chest side near, it sprays expansion gas when vehicle side is subject to impacting; And air bag, it is formed with multiple folding part, for this air bag is stored in a folded state, under the effect of the expansion gas of above-mentioned charging blower, at the position from chest to head of above-mentioned occupant with launch between the sidewall portion of vehicle and expand, wherein, turn back in the folding part on the top of the expansion direction of above-mentioned air bag inside car.
Adopt said structure, when applying to impact to vehicle from side because of side impact etc., from charging blower ejection expansion gas.Supply this expansion gas from the folding part of the side close to charging blower towards the folding part of the side away from this charging blower, folding part removes according to this order that (expansion) is folding to be expanded.And when expansion gas being supplied to the folding part on top of expansion direction of air bag, this folding part is removed the state that (expansion) turn back inside car and is expanded.In this expansion and when expanding, the folding part on above-mentioned top can not be contacted with the sidewall portion of vehicle, not easily cause to hinder because of the friction between this sidewall portion and launch smoothly.
Preferably, in above-mentioned side air bag device, above-mentioned air bag be folded to form multiple folding part from the top to the bottom at least partially, and above-mentioned air bag carry out upward from below at least partially launch and expand; Turn back inside car as the folding part on the top of expansion direction in the folding part of the upper end of above-mentioned air bag.
Adopt said structure, the folding part folding part supply upward from below at least partially of the expansion gas gushed out from charging blower when vehicle side is subject to impacting.Air bag is under the effect of this expansion gas, and folding part upward, folding part from below removes that (expansion) is folding to be expanded according to priority.And, expansion gas is supplied to the top of the expansion direction as air bag, the folding part of upper end time, the state (expansion) of turning back inside car is removed in this folding part.When this expansion, the folding part of upper end can not be contacted with the sidewall portion of vehicle, not easily causes and hinders launch smoothly because the friction harm between this sidewall portion.
Preferably, in above-mentioned side air bag device, above-mentioned air bag is divided into the rear expansion chamber being positioned at front expansion chamber on front side of this zoning wall and being positioned on rear side of this zoning wall by the zoning wall extended along roughly vertical direction; Above-mentioned charging blower is configured in the bottom of above-mentioned rear expansion chamber; The position being in the head side of above-mentioned occupant in above-mentioned zoning wall is provided with the upper communication hole making to be communicated with between above-mentioned rear expansion chamber and above-mentioned front expansion chamber; The position being in the chest side of above-mentioned occupant in above-mentioned zoning wall is provided with the lower communication hole making to be communicated with between above-mentioned rear expansion chamber and above-mentioned front expansion chamber; The region on front side of above-mentioned zoning wall of being positioned in above-mentioned air bag folding from the top to the bottom folds at rear, direction according to the method to the folding rolled folding of equidirectional in the past, and the region be positioned on rear side of above-mentioned zoning wall in above-mentioned air bag folding from the top to the bottom folds at rear, direction according to the corrugated method for folding alternately changing folding direction in the past.
Adopt said structure, a part for the expansion gas gushed out from charging blower when vehicle side is subject to impacting flows with front upward in rear expansion chamber.Launch toward the front under the effect of this expansion gas than zoning wall corrugated folding part rearward and expand.At this, corrugated folding have be easy to remove the such feature of folded state.Therefore, promptly launch toward the front than zoning wall corrugated folding part rearward in the chest of occupant, the side, rear portion of head and expand, promptly retrain and protect the above-mentioned position of occupant.
Flow upward in rear expansion chamber and the part that arrives the expansion gas at the position of the side, rear portion of the chest being in occupant flowed into by lower communication hole before expansion chamber bottom in.In addition, flowing and arrive the part being in the expansion gas at the position of the side, rear portion of the head of occupant above this lower communication hole not by lower communication hole but in rear expansion chamber, before being flowed into by upper communication hole expansion chamber top in.Launch toward the front under the effect of above-mentioned expansion gas than the part of zoning wall rolled folding on the front and expand.At this, rolled folding has the sidewall portion be easy to along vehicle and launches such feature.Therefore, forwards launch and expand in the chest of occupant, the anterior side of head along the sidewall portion of vehicle than the part of zoning wall rolled folding on the front, reliably retrain and protect the above-mentioned position of occupant.
Preferably, in above-mentioned side air bag device, at least bottom of above-mentioned air bag is folded to form multiple folding part in rear, direction in the past, and above-mentioned expansion and expansion are carried out from the rear to the front at least bottom of above-mentioned air bag; Turn back inside car as the folding part on the top of expansion direction in the folding part of the lower front part of above-mentioned air bag.
Adopt said structure, supplying toward the front from the rear of the bottom of air bag at least partially of the expansion gas gushed out from charging blower when vehicle side is subject to impacting.In the bottom of air bag, under the effect of this expansion gas, from the folding part at rear, folding part is toward the front removed folding (expansion) according to priority gradually.And, expansion gas is supplied to the top of the expansion direction as air bag, the folding part of lower front part time, the state (expansion) of turning back inside car is removed in this folding part.When this expansion, above-mentioned folding part can not be contacted with the sidewall portion of vehicle, not easily causes and launches smoothly because the friction between this sidewall portion hinders.
Preferably, in above-mentioned side air bag device, above-mentioned air bag is divided into the rear expansion chamber being positioned at front expansion chamber on front side of this zoning wall and being positioned on rear side of this zoning wall by the zoning wall extended along roughly vertical direction; Above-mentioned charging blower is configured in the bottom of above-mentioned rear expansion chamber; The position being in the chest side of above-mentioned occupant in above-mentioned zoning wall is provided with the lower communication hole making to be communicated with between above-mentioned rear expansion chamber and above-mentioned front expansion chamber; Turn back with the state of intersecting with above-mentioned zoning wall in the folding part of the lower front part of above-mentioned air bag.
Adopt said structure, flowing toward the front from the rear of the bottom of rear expansion chamber at least partially of the expansion gas gushed out from charging blower when vehicle side is subject to impacting.The bottom of rear expansion chamber under the effect of this expansion gas from the folding part at rear folding part toward the front remove folding (expansion) gradually according to priority.And, expansion gas make the top of the expansion direction as air bag, the demi-inflation being in zoning wall rear in the folding part of lower front part.
In addition, a part for the expansion gas gushed out from charging blower flows upward in rear expansion chamber.When expansion gas flows upward and arrives the position of the chest side being in occupant in rear expansion chamber, flow to the part being positioned at zoning wall front in the folding part of above-mentioned lower front part by lower communication hole.Utilize this expansion gas, remove the state (expansion) of turning back inside car above-mentioned folding part.Now, the part being arranged in zoning wall rear taking the lead in as described above starting to expand is utilized to push the part being positioned at zoning wall front of above-mentioned folding part, therefore, it is possible to promptly launch.
the effect of invention
Adopt above-mentioned side air bag device, owing to turning back in the folding part on the top of the expansion direction by air bag inside car, therefore, it is possible to make this folding part launch swimmingly.
Accompanying drawing explanation
Fig. 1 is the figure of the embodiment representing side air bag device, is the lateral plan that will be provided with the vehicle seat used of this device and together represent with air bag and occupant.
Fig. 2 represents in an embodiment, the vertical view cutaway drawing of the position relationship between vehicle seat used, air bag, occupant and sidewall portion.
Fig. 3 represents in an embodiment, the front sectional view of the position relationship between vehicle seat used, air bag, occupant and sidewall portion.
Fig. 4 represents in an embodiment, is incorporated with the in-built partial cross-sectional top view of the sidepiece of the back of seat of air bag component.
Fig. 5 represents that, in an embodiment, air bag is set to the lateral plan of the air bag component of unexpansive deployed condition.
Fig. 6 is the vertical view cutaway drawing of the schematic configuration of the inside of the air bag representing an embodiment.
Fig. 7 is by the internal structure of the air bag component of Fig. 5 and occupant and the vehicle seat used side partial cross-sectional together represented.
Fig. 8 represents in an embodiment, the lateral plan of the state before the airbag fold of air bag component.
Fig. 9 is (a) of the figure of the air bag component in the midway stage of the airbag fold representing an embodiment, Fig. 9 is lateral plan, the back view that (b) of Fig. 9 observes from the left of above-mentioned Fig. 9 (a).
Figure 10 is (a) of the figure of the air bag component in the midway stage of the airbag fold representing an embodiment, Figure 10 is lateral plan, the back view that (b) of Figure 10 observes from the left of above-mentioned Figure 10 (a).
Figure 11 is (a) of the figure of the air bag component in the midway stage of the airbag fold representing an embodiment, Figure 11 is lateral plan, the back view that (b) of Figure 11 observes from the left of above-mentioned Figure 11 (a).
Figure 12 is the figure of the air bag component in the midway stage of the airbag fold representing an embodiment, (a) of Figure 12 from the lateral plan of the back side of Figure 11 (a), the back view that (b) of Figure 12 observes from the right of above-mentioned Figure 12 (a).
Figure 13 is (a) of the figure of the air bag component in the midway stage of the airbag fold representing an embodiment, Figure 13 is lateral plan, and (b) of Figure 13 is the A-A line cutaway view of above-mentioned Figure 13 (a).
Figure 14 is (a) of the figure of the air bag component in the midway stage of the airbag fold representing an embodiment, Figure 14 is lateral plan, and (b) of Figure 14 is the B-B line cutaway view of above-mentioned Figure 14 (a).
Figure 15 be represent an embodiment airbag fold and be set to the figure of the air bag component of storage form, (a) of Figure 15 is lateral plan, and (b) of Figure 15 is the C-C line cutaway view of above-mentioned Figure 15 (a).
Figure 16 represents that its part is stayed in back of seat by the air bag of Fig. 4 to launch from vehicle seat used bloating and the partial cross-sectional top view of state after expanding.
Figure 17 is the lateral plan of the position relationship between the broken line of the air bag representing an embodiment and folding part.
The figure that Figure 18 and Figure 11 (b) is corresponding, be represent the folding part of the 1st tip side (upper end side) fold in mode different from the embodiment described above after the back view of variation of air bag.
description of reference numerals
10, vehicle; 11, sidewall portion; 12, vehicle seat used; 31, charging blower; 40, air bag; 46, rear expansion chamber; 47, front expansion chamber; 50, zoning wall; 54, upper communication hole; 55, lower communication hole; 66,68,69,72,73, folding part; P, occupant; PH, head; PT, chest; Z1, Z2, region.
Detailed description of the invention
Below, an embodiment of side air bag device is described with reference to Fig. 1 ~ Figure 17.
It should be noted that, in the following description, the working direction of vehicle is recited as front, with it for forward and backward, the upper and lower, left and right of benchmark regulation.In addition, in the various figures, " front " represents vehicle front side, and " afterwards " represents vehicle rear-side, and " interior " represents vehicle interior side, and " outward " represents vehicle outside.Vehicle interior side is the side near its middle position with regard to vehicle-width direction, and vehicle outside is the side away from above-mentioned middle position.
In addition, be set to the occupant (adult) with standard physique with the attitude predetermined (regular attitude) be seated at vehicle seat used on.
As shown in FIG. 1 to 3, vehicle seat used 12 are configured with near inside car in vehicle 10, sidewall portion 11.At this, sidewall portion 11 refers to the vehicle constituting member of the sidepiece being configured in vehicle 10, and mainly car door, pillar etc. are equivalent to this vehicle constituting member.Such as, corresponding with front-row seats sidewall portion 11 is driver door, center pillar (B pillar) etc.In addition, corresponding with back seat sidewall portion 11 is the front portion, rear quarter panel etc. of the rear portion of side car door (tail gate), C pillar, tire installing space (Japanese: タ イ ヤ Ha ウ ス).
Vehicle seat used 12 comprise seat cushion (seat portion) 13 and back of seat (backrest) 14, and this back of seat 14 erects from the rear side of this seat cushion 13 and can utilize Slope angle adjustment mechanism (omitting diagram) adjustment angle of inclination.Vehicle seat used 12 are configured in vehicle 10 with back of seat 14 attitude toward the front.Such configuration vehicle seat used 12 Width consistent with vehicle-width direction.
Back of seat 14 comprises seat back main body 15 and is located at a pair side electrode support 16 of both sides of Width of this seat back main body 15.Seat back main body 15 rolls tiltedly backward, from the upper part of the body of rear side supporting occupant P.Two-side supporting portion 16 forwards gives prominence to from seat back main body 15, for limiting the upper part of the body action being in the vehicle width direction sitting in and seat cushion 13 leaning on the occupant P of seat back main body 15.
Then, internal structure in back of seat 14, that comprise the car lateral side of the side electrode support 16 outside car is described.
The seat frame becoming its skeleton is configured with in back of seat 14.As shown in Figure 4, a part for seat frame is configured in the car Outboard Sections in back of seat 14, and this part (hereinafter referred to as " side frame member 17 ") is formed by carrying out bending machining to metal sheet.The seat buffer portion 18 be made up of isocyanurate foam elastomeric material is configured with in the front side of the seat frame comprising side frame member 17.In addition, the back board 19 of the hard formed by synthetic resin etc. is configured with at the rear side of seat frame.In addition, seat buffer portion 18 is covered by covering, but eliminates the diagram of this covering in the diagram.Figure 16 described later too.
In seat buffer portion 18, near outside the car of side frame member 17, be provided with incorporating section 21.The position of incorporating section 21 be the above-below direction of back of seat 14 centre portion and near the oblique rear of the occupant P that is seated at vehicle seat used 12 (with reference to Fig. 2).The air bag component AM of the main portion becoming side air bag device is incorporated with in this incorporating section 21.
Slit 22 outside the car being in incorporating section 21 and the bight being in the front side of incorporating section 21 extend outside oblique front truck.The fracture reservations 23 occurring because of air bag 40 described later to rupture are formed by the position (with the position that the frame of long and two-short dash line surrounds in Fig. 4) that the bight 18c of the front side of seat buffer portion 18 and slit 22 clip.
The air bag component AM be enclosed in above-mentioned back of seat 14 comprises inflator assemblies 30 and air bag 40 as main member of formation.Then, these member of formation are described respectively.
inflator assemblies 30
Inflator assemblies 30 comprise as gas producer charging blower 31 and cover the steady arm (retainer) 32 of this charging blower 31.In the present embodiment, the type being referred to as firework type is adopted as charging blower 31.Charging blower 31, in roughly cylindric, contains the gas producing agent (omitting diagram) for generation of expansion gas therein.
In addition, as charging blower 31, also can adopt and utilize gunpowder etc. to make to be filled with the partition wall fracture of the high-pressure gas tank of high pressure gas and type (mixed type) that expansion gas spray, substitute the firework type adopting above-mentioned gas generation agent.
On the other hand, steady arm 32 plays function as the diffuser controlling expansion gas emission direction, and have the component above-mentioned charging blower 31 being fastened on together with air bag 40 function on above-mentioned side frame member 17.The major part of steady arm 32 is formed as the roughly tubular extended along roughly vertical direction by carrying out bending machining etc. to sheet materials such as metal sheets.In steady arm 32, be provided with the interconnecting part (omit diagram) making to be communicated with inside and outside it, the great majority of the expansion gas gushed out from charging blower 31 are ejected into the outside of steady arm 32 by this interconnecting part.
Steady arm 32 is fixed with bolt 34, as the fixture structural unit for being arranged on by steady arm 32 on above-mentioned side frame member 17.
In addition, inflator assemblies 30 also can be that charging blower 31 is integrated with steady arm 32 one-tenth.
air bag 40
As shown in long and two-short dash line in Fig. 1 ~ Fig. 3, when being applied with impact because of side collision etc. from side offside wall portion 11 when vehicle 10 driving process is medium, air bag 40 receives the expansion gas from charging blower 31 supply and launches and expand, and bloats toward the front from this back of seat 14 with the state part of himself stayed in above-mentioned back of seat 14.
Fig. 5 represents that air bag 40 does not fill expansion gas and with the air bag component AM under the state of plane expansion (hereinafter referred to as " unexpansive deployed condition ").In addition, occupant P and vehicle seat used 12 together represents with by the air bag component AM of the air bag 40 of the unexpansive deployed condition in Fig. 5 after the middle body of vehicle-width direction cuts off to represent the internal structure of air bag component AM by Fig. 7.
As shown in Fig. 5 ~ Fig. 7, by 1 pieces of cloth (being also referred to as base fabric, panel cloth etc.) are overlapped in the vehicle width direction along broken line 42 doubling being set in its middle body, the part of this coincidence is combined into bag-shaped, thus forms air bag 40.At this, in order to distinguish air bag 40 above-mentioned coincidence after two parts, the part be positioned at inside car is called cloth portion 43, the part be positioned at outside car is called cloth portion 44.Each cloth portion 43,44 is in shape elongated in the vertical direction for fore-and-aft direction.
In addition, in the present embodiment, broken line 42 is positioned at the rearward end ground doubling pieces of cloth of air bag 40, but also can be that broken line 42 is positioned at the ground doubling pieces of cloth such as other ends, such as leading section, upper end, bottom.In addition, air bag 40 also can be made up of two pieces of cloth be divided into along above-mentioned broken line 42.In this case, by two pieces of cloth are overlapped in the vehicle width direction, two pieces of cloth are combined into bag-shaped, thus form air bag 40.Further, air bag 40 also can be made up of more than 3 pieces of cloth.
In air bag 40, the outer shape in two cloth portions 43,44 is take broken line 42 as the relation of axis of symmetry ground line symmetry each other.Shape, the size in each cloth portion 43,44 are set to: air bag 40 launches and after expanding between vehicle seat used 12 and sidewall portion 11, can occupy and in the upper part of the body being seated at this occupant P on vehicle seat used 12, corresponding to the position of head PH from chest PT region (Fig. 1 ~ Fig. 3).As shown in Figure 7, the front end 40a that air bag 40 is formed as the position of the head PH side being in occupant P is positioned at the front end 40b position on the front than the position being in chest PT side.
As above-mentioned two cloth portions 43,44, working strength is higher and have flexibility and the weaving cotton cloth etc. of being formed such as material, such as polyester line, the polyamide thread that can easily fold is comparatively applicable.
Above-mentioned combination between two cloth portions 43,44 carries out at periphery joint portion 45 place of the circumference being located at them.In the present embodiment, periphery joint portion 45 major part by make (with suture) two cloth portion 43,44 circumference in, part except rearward end (the neighbouring part of broken line 42) and being formed.This utilization is made and formed this point is also same for outer joint portion 52 described later and interior joint portion 53.
Make about above-mentioned, in Fig. 5, Fig. 7 ~ Figure 15 and Figure 17, utilize the line of 3 types to show and make part.The line of the 1st type is by the line (one of dotted line) that shows of the thick line intermittent arrangement of constant length ground, for such line shown with the state (the periphery joint portion 45 etc. with reference in Fig. 5) of observing sutured portion from side.The line of the 2nd type is by the line (one of dotted line) of the fine rule intermittent arrangement ground performance of constant length (length longer than general dotted line), for such line shown with the state (the interior joint portion 53 etc. with reference in Fig. 5) directly cannot seeing the suture of (hiding) between cloth portion 43,44.The line of the 3rd type is the line (one of dotted line) showed with point being separated constant interval arrangement, for the cross section (periphery joint portion 45 etc. with reference in Fig. 7) of such line shown with the suture in stitching cloth portion 43,44.
As shown in Fig. 5 ~ Fig. 7; launched and expand in the side of the upper part of the body of occupant P by the space that periphery joint portion 45 surrounds under the effect of expansion gas between two cloth portions 43,44, thus to become for retraining the bulge protecting it not to be hit to the position of head PH from chest PT.
In addition, the periphery joint portion 45 bonding formation that also can utilize the means different from the stitching using above-mentioned suture to carry out, such as utilize lining cement to carry out.Also bonding formation this point can be utilized also to be same for outer joint portion 52 described later and interior joint portion 53.
In air bag 40 and at the centre portion of fore-and-aft direction, be provided with the zoning wall 50 extended along roughly vertical direction, air bag 40 be separated into than zoning wall 50 rearward side rear expansion chamber 46 and than expansion chamber 47 before the forward side of this zoning wall 50.Zoning wall 50 has the structure same with being commonly referred to as the parts that retrain frenulum (Japanese: テ ザ ー).
zoning wall 50
Zoning wall 50 comprises a pair pieces of cloth 51, and these a pair pieces of cloth 51 and material of having flexibility and can easily folding higher by intensity, such as same with above-mentioned cloth portion 43,44 etc. to weave cotton cloth etc. are formed.Two pieces of cloth 51 are in band shape elongated in the vertical direction.Each pieces of cloth 51 utilize the relative part be incorporated into along the outer joint portion 52 that ora terminalis extends in roughly vertical direction thereafter in two cloth portions 43,44 of air bag 40.After air bag 40 expands, the position that be in fore-and-aft direction pars intermedia side of two outer joint portions 52 in the upper part of the body of occupant P is incorporated into the part corresponding with the rearward end of pieces of cloth 51 in cloth portion 43,44.Two pieces of cloth 51 utilize the front-end edge along them extend in roughly vertical direction in joint portion 53 be combined with each other.
Like this, the zoning wall 50 be made up of a pair pieces of cloth 51 is erected between cloth portion 43 inside the car in air bag 40 and the cloth portion 44 outside car.Zoning wall 50 becomes the state (with reference to Fig. 5, Fig. 7) overlapped in the vehicle width direction when the unexpansive expansion of air bag 40.In addition, zoning wall 50, along with the state (with reference to Fig. 6) being expanded into tensioning in the vehicle width direction of air bag 40, limits the thickness (expanded thickness) of the vehicle-width direction of this air bag 40.
The upper communication hole 54 that in zoning wall 50, air bag 40 is in the side of the head PH of occupant P position after expanding is communicated with between expansion chamber 46 and front expansion chamber 47 after being provided with and making.In addition, the lower communication hole 55 that in zoning wall 50, air bag 40 is in the side of the chest PT of occupant P position after expanding is communicated with between expansion chamber 46 and front expansion chamber 47 after being provided with and making.More particularly, combination is removed respectively in end and these two positions, bottom thereon in above-mentioned interior joint portion 53.Do not arrange in the upper end of above-below direction and bottom and make joint portion 53 in two pieces of cloth 51 combinations.In the upper end of interior joint portion 53, to relieve combination position forms upper communication hole 54, and in the bottom of this interior joint portion 53, to relieve combination position forms above-mentioned lower communication hole 55.Upper communication hole 54 and lower communication hole 55 are closed under the state of two pieces of cloth 51 overlaps, to expand and the state of zoning wall 50 tensioning is in the vehicle width direction opened at air bag 40.
Under the state that air bag 40 is in unexpansive deployed condition, under state that namely pieces of cloth 51 of zoning wall 50 overlap, the lower-upper length L1 of lower communication hole 55 is formed be longer than the lower-upper length L2 of upper communication hole 54.Utilize this structure, the aperture area of the lower communication hole 55 after air bag 40 expands is set the aperture area being greater than upper communication hole 54.
And the major part of above-mentioned inflator assemblies 30 is housed in the rear end lower of rear expansion chamber 46 with the attitude extended along roughly vertical direction.The bolt 34 of steady arm 32 is through the cloth portion 43 inside the car of air bag 40.Utilize this to run through, inflator assemblies 30 can be locking with the state of locating relative to air bag 40.
Further, the cloth portion 44 outside car is in the front portion of front expansion chamber 47 and be have deflation hole 56 between above-mentioned upper communication hole 54 and lower communication hole 55.In cloth portion 44, suture is utilized to carry out making and be provided with rib 57 around deflation hole 56.Rib 57, for strengthening the deflation hole 56 in cloth portion 44 around, suppresses this part to ftracture, burst at the seams.
In addition, as (a) of Fig. 4 and Figure 15, Figure 15 (b) shown in, the air bag component AM as main member of formation with inflator assemblies 30 and air bag 40 becomes compact form (hereinafter referred to as " storage form ") by folded airbag 40.This is to air bag component AM be made the assembly being applicable to storage for the incorporating section 21 that is restricted relative to size in back of seat 14.
By such as folding the air bag 40 of unexpansive deployed condition shown in Fig. 8 ~ Figure 15, storage form can be obtained.Then, the operation of folded airbag 40 is described, in this explanation, needs the position, folding direction etc. of specifying the position of broken line 42,61,64,67,71,74,75, folding position.Therefore, when specifying the position of above-mentioned broken line, folding the position at position, with each portion of inflator assemblies 30 for benchmark appointment air bag 40.With regard to the direction (roughly vertical direction) of the axis AL along inflator assemblies 30, the one end close to inflator assemblies 30 is called " the 1st cardinal extremity ", the one end away from inflator assemblies 30 is called " the 1st top ".Under the state that the air bag 40 of unexpansive deployed condition is arranged on vehicle seat used 12, above-mentioned 1st cardinal extremity is equivalent to the lower end of this air bag 40, and above-mentioned 1st top is equivalent to the upper end of this air bag 40.
The direction (roughly fore-and-aft direction) orthogonal with the axis AL of inflator assemblies 30 is also same.One end close to inflator assemblies 30 is called " the 2nd cardinal extremity ", the one end away from inflator assemblies 30 is called " the 2nd top ".Under the state that the air bag 40 of unexpansive deployed condition is arranged on vehicle seat used 12, above-mentioned 2nd cardinal extremity is equivalent to the rear end of this air bag 40, and above-mentioned 2nd top is equivalent to the front end of this air bag 40.
In addition, when specifying folding direction, being assumed to air bag 40 and being arranged on vehicle seat used 12, use the word of " outside car " and " inside car ".
Fig. 8 represents the state of the air bag 40 of the unexpansive deployed condition of the attitude that the axis AL that observation is set to broken line 42 and inflator assemblies 30 outside car extends along the vertical direction.In this air bag 40, be set with the broken line 61 orthogonal with broken line 42 from the position that inflator assemblies 30 leaves some to the 1st tip side (upper end side in Fig. 8).As shown by the arrows in Figure 8, in air bag 40, than above-mentioned broken line 61 by the part 62 of the 1st tip side (upper end side in Fig. 8) along this broken line 61 outside car (side at the moment in Fig. 8) turn back.Utilize this to turn back, the part of above-mentioned part 62 with in air bag 40, more overlapping by a part for the part 63 of the 1st base end side (lower end side in Fig. 8) than broken line 61.Air bag 40 becomes (a) of Fig. 9, the form shown in (b) of Fig. 9.
Then, in above-mentioned part 62, set broken line 64 from above-mentioned broken line 61 abreast to the position that the 1st tip side (lower end side in (a) of Fig. 9) is left and this broken line 61.As in (a) of this Fig. 9 shown in arrow, in above-mentioned part 62, than above-mentioned broken line 64 by the part 65 of the 1st tip side (lower end side in (a) of Fig. 9) along this broken line 64 outside car (side at the moment in (a) of Fig. 9) turn back.Utilize this to turn back, a part for above-mentioned part 65 is overlapping with a part for the part (hereinafter referred to as " folding part 66 ") clipped by broken line 61 and broken line 64 in air bag 40.Air bag 40 becomes (a) of Figure 10, the form shown in (b) of Figure 10.
Then, in above-mentioned part 65, be set with broken line 67 from above-mentioned broken line 64 abreast to the position that the 1st tip side (upper end side in (a) of Figure 10) is left and this broken line 64.As in (a) of this Figure 10 shown in arrow, in part 65, turn back along this broken line 67 (inboard in (a) of Figure 10) inside car than the part (hereinafter referred to as " folding part 68 ") of broken line 67 by the 1st tip side (upper end side in (a) of Figure 10).Utilize this to turn back, the major part of above-mentioned folding part 68 is overlapping with a part for the part (hereinafter referred to as " folding part 69 ") clipped by broken line 64 and broken line 67 in air bag 40.Air bag 40 becomes (a) of Figure 11, the form shown in (b) of Figure 11.
(b) of (a) of Figure 12, Figure 12 represents the state of above-mentioned air bag 40 of observing (a) of Figure 11, (b) of Figure 11 inside dorsal part, i.e. car.As (a) of this Figure 12, Figure 12 (b) shown in, the above-mentioned part 63 being accommodated with inflator assemblies 30 in air bag 40 is set with broken line 71.This broken line 71 is set the 2nd tip side (front) with regard to the expansion direction of air bag 40, namely orthogonal with the axis AL of inflator assemblies 30 direction.At this, broken line 71 is set as tilting relative to axis AL.As in (a) of Figure 12 shown in arrow, in above-mentioned part 63, than above-mentioned broken line 71 by the part (hereinafter referred to as " folding part 72 ") of the 2nd tip side (the oblique lower left side in (a) of Figure 12) along this broken line 71 inside car (side at the moment in (a) of Figure 12) turn back.Utilize this to turn back, folding part 72 with in part 63, the part of part (hereinafter referred to as " folding part 73 ") of being surrounded by broken line 71, broken line 42 and broken line 61 is overlapping.As (a) of Figure 13, Figure 13 (b) shown in, air bag 40 becomes folding part 69,68,66,73,72 outside car towards the intermediary that car is overlapping medially.
Then, as (a) of Figure 13, Figure 13 (b) shown in, with regard to the direction that the axis AL with inflator assemblies 30 is orthogonal, respectively with above-mentioned broken line 42 (axis AL) be abreast set with broken line 74 than zoning wall 50 (outer joint portion 52) by multiple positions of the region Z1 of the 2nd tip side (front) at above-mentioned mesomorphic air bag 40.And above-mentioned zone Z1 utilizes along each broken line 74 to the folding rolled folding of equidirectional, folding from the 2nd tip side (front) towards the 2nd base end side (rear end side).Utilize this to fold, air bag 40 becomes (a) of Figure 14, the form shown in (b) of Figure 14.
Then, as (a) of Figure 14, Figure 14 (b) shown in, with regard to the direction orthogonal with axis AL, rolled folding above-mentioned air bag 40 be set with broken line 75 abreast with above-mentioned broken line 42 (axis AL) than zoning wall 50 (outer joint portion 52) respectively by multiple positions of the region Z2 of the 2nd base end side (rear end side).And above-mentioned zone Z2 utilization alternately changes along each broken line 75 fold with turning back direction corrugated folding and folds from the 2nd tip side (front) towards the 2nd base end side (rear end side).Utilize this to fold, air bag 40 becomes (a) of Figure 15, the storage form shown in (b) of Figure 15.
Like this, no matter the folded and air bag component AM being in storage form of air bag 40 is in the direction (roughly vertical direction) of the axis AL along inflator assemblies 30, or on the direction (roughly fore-and-aft direction) that the axis AL with inflator assemblies 30 is orthogonal, its size all diminishes, even if thus become the assembly being also applicable to storage for the narrow incorporating section 21 of back of seat 14.
As shown in Figure 4, in the air bag component AM being set to storage form, self-align device 32 extends and has run through the bolt 34 of air bag 40 (cloth portion 43), through side frame member 17.And, by being tightened on this bolt 34 by nut 35, make inflator assemblies 30 be fixed on side frame member 17 together with air bag 40.
In addition, inflator assemblies 30 also can utilize the component different with nut 35 from above-mentioned bolt 34 to be fixed on side frame member 17.
As shown in Figure 1, side air bag device, except comprising above-mentioned air bag component AM (with reference to Fig. 2), also comprises shock transducer 81 and control setup 82.Shock transducer 81 is made up of acceleration pick-up etc., and it is located at the sidewall portion 11 (with reference to Fig. 2) etc. of vehicle 10, for detecting from side the impact that this sidewall portion 11 applies.Control setup 82 controls the work of charging blower 31 based on the detection signal from shock transducer 81.
Further, vehicle 10 is equipped with for the occupant P be seated on vehicle seat used 12 being constrained in this seat safety belt apparatus on vehicle seat used 12, but in Fig. 1 etc., eliminates the diagram of this seat safety belt apparatus.
Then, the effect of the side air bag device of the present embodiment formed as described above is described.
In this side air bag device, when not applying to impact to the sidewall portion 11 of vehicle 10 from side because of side collision etc., not exporting the working signal for making this charging blower 31 work from control setup 82 to charging blower 31, not supplying expansion gas from this charging blower 31 to air bag 40.Air bag component AM continues to be accommodated in incorporating section 21 (with reference to Fig. 4) with storage form.
Relative to this, in the driving process of vehicle, apply the impact of more than specified value from side offside wall portion 11 because of side collision etc., when detecting this situation by shock transducer 81, to export the working signal for making this charging blower 31 work from control setup 82 to charging blower 31 based on this detection signal.In charging blower 31, gas producing agent produces the expansion gas of high pressure according to this working signal, and sprays this expansion gas.The expansion gas gushed out is fed into air bag 40 by the interconnecting part of steady arm 32.At this, the zoning wall 50 that the pars intermedia of its fore-and-aft direction is located at by air bag 40 is divided into rear expansion chamber 46 and front expansion chamber 47, and the rear end lower in this rear expansion chamber 46 is configured with inflator assemblies 30.Therefore, the rear end lower in rear expansion chamber 46 is fed into from the expansion gas of charging blower 31.
As shown in figure 17, this expansion gas flows in rear expansion chamber 46 from the folding part 73 of the side close to inflator assemblies 30 towards the ground, folding part 68,72 of the side away from this inflator assemblies 30.Change a kind of expression, expansion gas flows in rear expansion chamber 46 upward from the folding part 73 of the 1st base end side (lower end side) expansion direction towards the ground, folding part 68 of the 1st tip side (upper end side).In addition, expansion gas forwards flows in rear expansion chamber 46 from the folding part 73 of the 2nd base end side (rear end side) expansion direction towards the ground, folding part 72 of the 2nd tip side (front).The folding part 73 of the 1st base end side and the 2nd base end side is the folding part containing inflator assemblies 30.
When the expansion gas forwards flowed towards the ground, folding part 72 of the 2nd tip side from the 2nd base end side arrives zoning wall 50, change flow direction upward along this zoning wall 50, collaborate with the expansion gas originally just flowed upward.
Utilize above-mentioned expansion gas upward, it is folding while expand that rear expansion chamber 46 removes upward (expansion) from below in order.
In addition, utilize above-mentioned expansion gas toward the front, removing (expansion) than zoning wall 50 corrugated folding region Z2 rearward (with reference to Figure 14) toward the front in order from rear and fold while expand in air bag 40.
Air bag 40 is upward as described above, front is launched and in the process expanded, the seat buffer portion 18 of back of seat 14 is pressed by air bag 40, fracture reservations 23 place fracture in the diagram.As shown in figure 16, air bag 40 is so that by the rearward end of himself and inflator assemblies 30, the state together stayed in incorporating section 21 bloats from back of seat 14 to the roughly front of vehicle 10.
Above-mentioned expansion gas make in the folding part 72 of the 2nd tip side (front), than zoning wall 50 demi-inflation rearward.
At this, corrugated folding have be easy to remove the such feature of folded state.Therefore, promptly launch toward the front than zoning wall 50 corrugated folding region Z2 rearward and expand.
In addition, the volume of rear expansion chamber 46 is less than volume when air bag 40 is not separated by zoning wall 50, this air bag 40.In addition, the expanded thickness on the vehicle-width direction of rear expansion chamber 46 is less than the expanded thickness on vehicle-width direction when air bag 40 is not separated, this air bag 40.Therefore, even if rear expansion chamber 46 is also easy to pass through to launch and expand in narrow gap.
As shown in Fig. 7 and Figure 17, flow upward in rear expansion chamber 46 and the part reaching the expansion gas of the side, rear portion of the chest PT of occupant P flow into by lower communication hole 55 before expansion chamber 47 bottom in.In addition, not by lower communication hole 55 in rear expansion chamber 46 above this lower communication hole 55 flowing and the part that reaches the expansion gas of the side, rear portion of the head PH of occupant P flow into by upper communication hole 54 before expansion chamber 47 top in.Now, the aperture area due to lower communication hole 55 is greater than the aperture area of upper communication hole 54, therefore, compared with upper communication hole 54, has a large amount of expansion gas to flow in lower communication hole 55.
The part being flow into the expansion gas of front expansion chamber 47 by lower communication hole 55 change with below upward towards.In addition, the part being flow into the expansion gas of front expansion chamber 47 by upper communication hole 54 change downwards towards.
Under the effect of these expansion gases, the part after the rolled folding in the front of zoning wall 50 is launched toward the front in the anterior side of chest PT, head PH and expands.Now, as described above, expansion gas is different with the flow in upper communication hole 54 at lower communication hole 55, therefore, not easily cause the anterior side being predefined in head PH to launch and the position of expanding is launched prior to other positions, the particularly side of chest PT and expanded, namely not easily cause and to launch before the position by the narrow gaps between the shoulder PS of occupant P and the sidewall portion 11 of vehicle and to expand.The anterior side being predefined in head PH is launched and the position of expanding is launched after the position that have passed the narrow gaps between shoulder PS and sidewall portion 11 and expands.Its result, not easily causes the generation of following phenomenon, and the side of namely in air bag 40, to be predefined in occupant P head PH is launched and the position of expanding becomes the expansion and the expansion that are difficult to be hindered other positions by the position of above-mentioned narrow gaps.Air bag 40 launches in the side from the chest PT of occupant P to the position of head PH and expands.
In addition, rolled folding has the sidewall portion 11 be easy to along vehicle 10 and launches such feature.Therefore, the part of the rolled folding in the front of zoning wall 50 is forwards launched in the chest PT of occupant P, the anterior side of head PH along the sidewall portion 11 of vehicle and expands.
Flow into front expansion chamber 47 by lower communication hole 55 and change downwards towards expansion gas be fed in the folding part 72 of the 2nd tip side (front) be positioned at the part in zoning wall 50 front time, remove (expansion) this folding part 72 state of turning back inside car.When this expansion, folding part 72 does not contact with the sidewall portion 11 of vehicle, not easily causes the generation of following situation, namely launches smoothly because the friction between folding part 72 and this sidewall portion 11 hinders.In addition, the part be positioned on front side of zoning wall 50 in folding part 72 is pushed, therefore, it is possible to promptly launch by the part be positioned on rear side of zoning wall 50 taking the lead in as described above starting expanding.
When a part for the expansion gas flowed upward in rear expansion chamber 46 arrives the folding part 68 of the 1st tip side (upper end side), remove the state turned back in (expansion) this folding part 68 inside car.When this expansion, folding part 68 does not contact with the sidewall portion 11 of vehicle 10, not easily causes the generation of following situation, is namely hindered by the friction between folding part 68 and this sidewall portion 11 and launches smoothly.
As shown in Figure 7, after air bag 40 completes and launches and expand, the front end 40a being in the position of the head PH side of occupant P is positioned at the front end 40b position on the front than the position being in chest PT side.Therefore, be positioned at the position identical with the front end 40b of air bag 40 compared to the front end 40a at position of the head PH side being in occupant P or be positioned at the mode at rear of front end 40b of air bag 40, in air bag 40 launch in the side of head PH and the region of expanding is expanded in front.
In addition, assuming that upper communication hole 54 is positioned on the folding part different from the folding part 68 of topmost, such as folding part 69, then expansion gas flow into front expansion chamber 47 by upper communication hole 54 and this front expansion chamber 47 is expanded, thus likely hinders expansion that after this carry out, folding part 68 and expansion.
In this, in the present embodiment, because upper communication hole 54 is arranged in the folding part 68 of topmost, therefore, in the process that this folding part 68 is launched, the expansion gas in rear expansion chamber 46 flow into front expansion chamber 47 by upper communication hole 54.Thus, the expansion and the expansion that hinder folding part 68 because of upper communication hole 54 is not easily caused.
As shown in long and two-short dash line in Fig. 2 and Fig. 3, to launch as described above and the air bag 40 expanded directly pushes and retrains this occupant P between occupant P and the sidewall portion 11 entered inside car gradually inside car, and relax the impact from side being delivered to occupant P by sidewall portion 11.
In addition, by upper communication hole 54 flow into front expansion chamber 47 top and change downwards towards expansion gas to be discharged to the outside (than side by vehicle, cloth portion 44) of air bag 40 by deflation hole 56.Utilize the internal drop caused by the discharge of this expansion gas low, the impact from side being delivered to occupant P by sidewall portion 11 can be relaxed.In addition, the top of front expansion chamber 47 is made to launch as described above and the expansion gas expanded is discharged from deflation hole 56, therefore, it is possible to suppress the lower flow be positioned at below deflation hole 56 of this expansion gas expansion chamber 47 forward.Its result, can suppress the bottom of front expansion chamber 47 launch because of excessive pressure in the side of chest PT and expand.
Adopt the above present embodiment described in detail, following effect can be obtained.
(1) the expansion gas from charging blower 31 is being utilized air bag 40 to be launched the position from the chest PT of the occupant P be seated on vehicle seat used 12 to head PH and the sidewall portion 11 of vehicle 10 and in the side air bag device expanded, (Figure 12) is turned back in the folding part 68,72 on the top of the expansion direction of air bag 40 inside car.
Therefore, it is possible to suppress folding part 68,72 to be contacted with the sidewall portion 11 of vehicle 10 when state (expansion) is turned back in releasing, this folding part 68,72 is launched swimmingly.
(2) formed ground, multiple folding part 66,68,69,73 from top folded airbag 40 downward, and air bag 40 is carried out launch and expand (Figure 17) upward from below.And, using the folding part ground to car inside turn back ((a) of Figure 11, (b) of Figure 11) of the folding part 68 of the upper end of air bag 40 as the top of expansion direction.
Therefore, in the structure turned back in the folding part 68 of the upper end of air bag 40 inside car, the effect of above-mentioned (1) can be obtained.
(3) utilize the zoning wall 50 extended along roughly vertical direction to be divided into by air bag 40 than expansion chamber 47 before this forward side of zoning wall 50 and the rear expansion chamber 46 than this zoning wall 50 side rearward, configure charging blower 31 in the bottom of rear expansion chamber 46.The upper communication hole 54 that the position being in the head PH side of occupant P in zoning wall 50 is communicated with between expansion chamber 46 and front expansion chamber 47 after arranging and making, further, the lower communication hole 55 (Fig. 7) that the position being in the chest PT side of occupant P in zoning wall 50 is communicated with between expansion chamber 46 and front expansion chamber 47 after arranging and making.By by from top downward folded airbag 40 and in multiple folding parts 66,68,69,73 of being formed, the region Z1 of side more forward than zoning wall 50 utilizes rolled folding to fold ((a) of Figure 13, (b) of Figure 13) from front towards rear, by by from top downward folded airbag 40 and in multiple folding parts 66,68,69,73 of being formed, utilize corrugated folding to fold from front towards rear ((a) of Figure 14, (b) of Figure 14) than the region Z2 of zoning wall 50 side rearward.
Therefore, it is possible to make the chest PT of corrugated folding part at occupant P at the rear of zoning wall 50, the side, rear portion of head PH promptly launches toward the front and expands, thus promptly retrain and protect the above-mentioned position of occupant P.In addition, the part of the rolled folding in the front of zoning wall 50 can be made forwards to launch in the chest PT of occupant P, the anterior side of head PH along the sidewall portion 11 of vehicle and expand, reliably retrain and protect the above-mentioned position of occupant P.
(4) form ground, folding part 72,73 from front towards the bottom of rear folded airbag 40, and make the bottom of air bag 40 carry out toward the front from rear launching and expanding.And, using the folding part ground to car inside turn back ((a) of Figure 12) of the folding part 72 of the lower front part of air bag 40 as the top of expansion direction.
Therefore, in the structure turned back in the folding part 72 of the lower front part of air bag 40 inside car, the effect of above-mentioned (1) can be obtained.
(5) utilize the zoning wall 50 extended along roughly vertical direction to be divided into by air bag 40 than expansion chamber 47 before this forward side of zoning wall 50 and the rear expansion chamber 46 than this zoning wall 50 side rearward, configure charging blower 31 in the bottom of rear expansion chamber 46.The lower communication hole 55 (Fig. 7) that the position being in the chest PT side of occupant P in zoning wall 50 is communicated with between expansion chamber 46 and front expansion chamber 47 after arranging and making.Further, ((a) of Figure 12) is turned back with the state of intersecting with zoning wall 50 (outer joint portion 52) in the folding part 72 of the lower front part of air bag 40.
Therefore, it is possible to utilize the part being positioned at zoning wall 50 front taking the lead in starting in the folding part 72 of rear portion pushing lower front part that expand, zoning wall 50, can promptly launch.
In addition, above-mentioned embodiment also can be implemented as variation after change as follows.
The aperture area of lower communication hole 55 also can be set to the size identical with the aperture area of upper communication hole 54.In this case, also the effect same with above-mentioned embodiment can be obtained.
Deflation hole 56 also can be formed as shape, the such as slit-shaped different from circle.
Also can not use steady arm 32 and charging blower 31 is directly installed on side frame member 17.
Air bag 40 also can be that it roughly overallly expands as above-mentioned embodiment, but also can have in a part and be not supplied to expansion gas and the unexpansive portion that can not expand.
A part for folding part 68 in (a) of Figure 10, the 1st tip side (upper end side) also can be turned back further inside car.Figure 18 represents an one example.In this case, such as, in the folding part 68 of (a) of Figure 10, be set with broken line 77 from broken line 67 abreast to the position that the 1st tip side (upper end side in (a) of Figure 10) is left and this broken line 67.As shown in (a) of this Figure 10, in above-mentioned folding part 68, turn back along this broken line 77 (inboard in (a) of Figure 10) inside car than the part (hereinafter referred to as " folding part 78 ") of above-mentioned broken line 77 by the 1st tip side (upper end side in (a) of Figure 10).Utilize this to turn back, the major part of above-mentioned folding part 78 is overlapping with the major part of the part (hereinafter referred to as " folding part 79 ") clipped by broken line 67 and broken line 77 in air bag 40.
Even if under these circumstances, state that (expansion) turn back inside car is removed while when expanding in the folding part 78 being positioned at the 1st tip side (upper end side), this folding part 78 also can not be contacted with the sidewall portion 11 of vehicle 10, not easily causes and launches smoothly because the friction between this sidewall portion 11 hinders.
The bottom of air bag 40 folds more than twice from front towards rear with also can forming more than 3 folding parts.
Air bag 40 from the 2nd tip side (front) towards the folding bottom being not limited to this air bag 40 of the 2nd base end side (rear end side), also can carry out in the part of the top side comprising this bottom.
Also any one folding from the 1st tip side (upper end side) towards the 1st base end side (lower end side) of air bag 40 and folding from the 2nd tip side (front) towards the 2nd base end side (rear end side) can be omitted.
Zoning wall 50 also can be made up of 1 pieces of cloth.
Also can substitute the back of seat 14 of vehicle seat used 12, and the position being equivalent to incorporating section 21 is set in sidewall portion 11, load air bag component AM herein.
The vehicle applying above-mentioned side air bag device is not limited to family car, also comprises various industrial vehicle.
Claims (5)
1. a side air bag device, it comprises:
Charging blower, its be configured in be seated at vehicle seat used on occupant chest side near, it sprays expansion gas when vehicle side is subject to impacting; And
Air bag, it is formed with multiple folding part, for being stored in a folded state by this air bag, under the effect of the expansion gas of above-mentioned charging blower, at the position from chest to head of above-mentioned occupant with launch between the sidewall portion of vehicle and expand, the feature of this side air bag device is
Turn back in the folding part on the top of the expansion direction of above-mentioned air bag inside car.
2. side air bag device according to claim 1, wherein,
Above-mentioned air bag be folded to form multiple folding part from the top to the bottom at least partially, and above-mentioned air bag carry out upward from below at least partially launch and expand,
Turn back inside car as the folding part on the top of expansion direction in the folding part of the upper end of above-mentioned air bag.
3. side air bag device according to claim 2, wherein,
Above-mentioned air bag is divided into the rear expansion chamber being positioned at front expansion chamber on front side of this zoning wall and being positioned on rear side of this zoning wall by the zoning wall extended along roughly vertical direction,
Above-mentioned charging blower is configured in the bottom of above-mentioned rear expansion chamber,
The position being in the head side of above-mentioned occupant in above-mentioned zoning wall is provided with the upper communication hole making to be communicated with between above-mentioned rear expansion chamber and above-mentioned front expansion chamber,
The position being in the chest side of above-mentioned occupant in above-mentioned zoning wall is provided with the lower communication hole making to be communicated with between above-mentioned rear expansion chamber and above-mentioned front expansion chamber,
The region on front side of above-mentioned zoning wall of being positioned in above-mentioned air bag folding from the top to the bottom folds at rear, direction according to the method to the folding rolled folding of equidirectional in the past, and the region be positioned on rear side of above-mentioned zoning wall in above-mentioned air bag folding from the top to the bottom folds at rear, direction according to the corrugated method for folding alternately changing folding direction in the past.
4. the side air bag device according to any one of claims 1 to 3, wherein,
At least bottom of above-mentioned air bag is folded to form multiple folding part in rear, direction in the past, and above-mentioned expansion and expansion are carried out from the rear to the front at least bottom of above-mentioned air bag,
Turn back inside car as the folding part on the top of expansion direction in the folding part of the lower front part of above-mentioned air bag.
5. side air bag device according to claim 4, wherein,
Above-mentioned air bag is divided into the rear expansion chamber being positioned at front expansion chamber on front side of this zoning wall and being positioned on rear side of this zoning wall by the zoning wall extended along roughly vertical direction,
Above-mentioned charging blower is configured in the bottom of above-mentioned rear expansion chamber,
The position being in the chest side of above-mentioned occupant in above-mentioned zoning wall is provided with the lower communication hole making to be communicated with between above-mentioned rear expansion chamber and above-mentioned front expansion chamber,
Turn back with the state of intersecting with above-mentioned zoning wall in the folding part of the lower front part of above-mentioned air bag.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-121870 | 2013-06-10 | ||
| JP2013121870A JP6067490B2 (en) | 2013-06-10 | 2013-06-10 | Side airbag device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104228748A true CN104228748A (en) | 2014-12-24 |
| CN104228748B CN104228748B (en) | 2017-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410256727.6A Expired - Fee Related CN104228748B (en) | 2013-06-10 | 2014-06-10 | Side air bag device |
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| Country | Link |
|---|---|
| JP (1) | JP6067490B2 (en) |
| CN (1) | CN104228748B (en) |
| DE (1) | DE102014008599A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110603174A (en) * | 2017-05-17 | 2019-12-20 | 奥托立夫开发公司 | Side airbag device |
| CN112339697A (en) * | 2019-08-07 | 2021-02-09 | 奥托立夫开发公司 | Airbag device |
| CN112572339A (en) * | 2019-09-27 | 2021-03-30 | 现代摩比斯株式会社 | Folding method of side airbag apparatus and side airbag apparatus |
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| CN114379498A (en) * | 2020-10-22 | 2022-04-22 | 丰田自动车株式会社 | Occupant protection device |
| CN114379502A (en) * | 2021-12-30 | 2022-04-22 | 宁波均胜汽车安全系统有限公司 | Seat side airbag device and bag |
| US11358555B2 (en) | 2018-10-03 | 2022-06-14 | Autoliv Development Ab | Vehicle seat |
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| JP6278025B2 (en) | 2015-10-26 | 2018-02-14 | トヨタ自動車株式会社 | Side airbag device for vehicle and method for folding side airbag |
| JP6551196B2 (en) | 2015-11-30 | 2019-07-31 | 豊田合成株式会社 | Far-side airbag device and airbag folding method |
| US11351948B2 (en) * | 2018-04-05 | 2022-06-07 | Autoliv Development Ab | Side airbag device and vehicle seat provided with same |
| JP6973343B2 (en) | 2018-09-26 | 2021-11-24 | 豊田合成株式会社 | Side airbag device |
| EP4147918A4 (en) * | 2020-04-09 | 2024-05-01 | Autoliv Development AB | Side airbag device |
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| US11904787B1 (en) * | 2023-01-03 | 2024-02-20 | GM Global Technology Operations LLC | Forward mount compact passenger airbag module with passive gas modulation |
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| CN110603174A (en) * | 2017-05-17 | 2019-12-20 | 奥托立夫开发公司 | Side airbag device |
| US11358555B2 (en) | 2018-10-03 | 2022-06-14 | Autoliv Development Ab | Vehicle seat |
| CN112339697A (en) * | 2019-08-07 | 2021-02-09 | 奥托立夫开发公司 | Airbag device |
| CN112572339A (en) * | 2019-09-27 | 2021-03-30 | 现代摩比斯株式会社 | Folding method of side airbag apparatus and side airbag apparatus |
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| CN113548005A (en) * | 2020-04-06 | 2021-10-26 | 现代摩比斯株式会社 | Side airbag device and folding method thereof |
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| CN114379502A (en) * | 2021-12-30 | 2022-04-22 | 宁波均胜汽车安全系统有限公司 | Seat side airbag device and bag |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014008599A1 (en) | 2014-12-11 |
| CN104228748B (en) | 2017-07-18 |
| JP2014237411A (en) | 2014-12-18 |
| JP6067490B2 (en) | 2017-01-25 |
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