CN104066627A - Airbag device - Google Patents

Airbag device Download PDF

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Publication number
CN104066627A
CN104066627A CN201380005572.2A CN201380005572A CN104066627A CN 104066627 A CN104066627 A CN 104066627A CN 201380005572 A CN201380005572 A CN 201380005572A CN 104066627 A CN104066627 A CN 104066627A
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CN
China
Prior art keywords
air bag
shoestring
airbag apparatus
retainer
supporter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201380005572.2A
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Chinese (zh)
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CN104066627B (en
Inventor
林信二
北池丰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Joyson Safety Systems Japan GK
Original Assignee
Takata Corp
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Filing date
Publication date
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Publication of CN104066627A publication Critical patent/CN104066627A/en
Application granted granted Critical
Publication of CN104066627B publication Critical patent/CN104066627B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

Provided is an airbag device in which the fish-mouth phenomenon can be prevented and the weight of a retainer can be reduced. An airbag cover (5) has a plate-shaped part (51), an inner case (52), retaining holes (53), and an interlocking hole (54); a retainer (4) has a supporting body (41) formed into a substantially flat plate shape, and a hook (42) capable of interlocking in the interlocking hole (54) formed in the supporting body (41); an airbag (2) has belt-shaped bodies (21) inserted through the retaining holes (53), attached to the supporting body (41), and formed into annular shapes; a protector cloth (6) has retaining parts (61) for retaining the belt-shaped bodies (21) before the belt-shaped bodies (21) are inserted through the retaining holes (53); and the belt-shaped bodies (21) are retained by the retaining parts (61) so that when an airbag module (11) connected to the supporting body (41) is fitted with the airbag cover (5), the airbag (2) and an inflator (3) can be pulled out through the retaining holes (53).

Description

Airbag apparatus
Technical field
The present invention relates to airbag apparatus, particularly relate to the weight-saving airbag apparatus that can realize airbag apparatus.
Background technology
In the vehicles such as automobile, carrying airbag apparatus becomes universal phenomenon gradually, and this airbag apparatus for expanding air bag to launch and absorbing the impact to occupant's generation in the time that when collision etc. is urgent in car.Such airbag apparatus generally has: air bag, the folded and expansion of expanding when urgent conventionally time; Charging blower, to this air bag supply gas; Retainer, fixing above-mentioned air bag and above-mentioned charging blower; And air cell covering, cover above-mentioned air bag.
And, when urgent in the time of vehicle collision etc., make above-mentioned air bag expand from above-mentioned charging blower to above-mentioned air bag supply gas, above-mentioned air cell covering cracking and above-mentioned air bag is emitted and the expansion of expanding in car.Particularly, in the situation that co-pilot seat is used airbag apparatus, the expansion of expanding in the space being surrounded by instrument carrier panel, windshield (front windshield glass) and occupant of above-mentioned air bag.
In addition, above-mentioned retainer is made up of metallic material mostly, the impact (for example,, with reference to patent documentation 1) of expanding while launching or when occupant's impact airbag can bear air bag.In the airbag apparatus of recording at patent documentation 1, the retainer of metal sheet system is fixed on a part for instrument carrier panel by hold-down bolt.
In addition, in order to realize the lightweight of retainer, also having proposed to make a part for retainer is plastic structure (for example,, with reference to patent documentation 2).In the airbag apparatus of recording at patent documentation 2, making to keep the retainer bottom of charging blower is metal system, and making to keep the retainer top of air bag is synthetic resin system.Retainer top is fixed on by bolt in retainer bottom, and retainer top is fixed by projection being embedded in to air cell covering (lid).By such structure, realize lightweight by retainer top, by retainer bottom impact-absorbing.
As mentioned above, retainer is with respect to instrument carrier panel, air cell covering, mostly be fixed by the attaching parts such as rivet, bolt or by chimeric being fixed of projection is positioned, but in recent years, as recorded in patent documentation 3, by making to be disposed at, the hook of retainer engages in the mode that can relatively move with the peristome that is formed at air cell covering (lid) and the structure that retainer is positioned to floating type is increased.By such structure, can alleviate the impact of air bag, and assembling operation is improved.
Patent documentation 1: TOHKEMY 2001-97162 communique
Patent documentation 2: TOHKEMY 2000-326813 communique
Patent documentation 3: No. 3822578 communique of Japanese Patent
Summary of the invention
Above-mentioned retainer has the box shape of the rectangle of upper opening, and is fixed with charging blower and air bag in bottom.Therefore, expand while launching at air bag, the air bag that has been supplied to gas from charging blower is from the expansion of expanding of the bottom side of retainer, and pushes the side wall portion of retainer.Consequently, the peristome on retainer top is deformed into circular.In addition, air cell covering (lid), generally by forming synthetic resin, therefore easily deforms, even if surrounded the side wall portion of retainer by air cell covering (lid), also cannot suppress the distortion of the peristome on retainer top.
Generally speaking, the distortion of this retainer is called to " fish mouth (shedding deformation) phenomenon ", in the design of retainer, needs fish mouth phenomenon countermeasure.In existing metal retainer, as fish mouth phenomenon countermeasure, by thickening thickness of slab, appending strengthening part or increase solder joint number, improve intensity, the rigidity of retainer.But such fish mouth phenomenon countermeasure exists the weight of retainer is increased and the weight-saving problem of obstruction airbag apparatus.
In addition, for lightweight, also studied and adopted resin, only passed through the metal retainer of bending/stretch process, but in the situation that having considered fish mouth countermeasure, in these retainers, had the problem that undercapacity and practical application are more difficult.
The present invention makes in view of such problem points, and its object is to provide a kind of weight-saving airbag apparatus that can prevent fish mouth phenomenon and can realize retainer.
According to the present invention, a kind of airbag apparatus is provided, have: air bag, the folded and expansion of expanding when urgent conventionally time, charging blower, to this air bag supply gas, retainer, fixing above-mentioned air bag and above-mentioned charging blower, air cell covering, receives above-mentioned air bag, and protecting cloth, keep the folded state of above-mentioned air bag, above-mentioned airbag apparatus to be characterised in that, above-mentioned air cell covering has: plate-like portion, forms automobile interior face, inner housing, be disposed at the back side of this plate-like portion and form above-mentioned air bag expansion launch path, and multiple retaining holes, be formed at this inner housing and can keep above-mentioned retainer, above-mentioned retainer has and is formed as the roughly supporter of writing board shape, above-mentioned air bag has and is inserted through above-mentioned retaining hole and is installed on above-mentioned supporter and is formed as the shoestring of ring-type, above-mentioned protecting cloth has the above-mentioned retaining hole of subtend and inserts the maintaining part that previous above-mentioned shoestring keeps, above-mentioned shoestring can be held in above-mentioned maintaining part from the mode of above-mentioned retaining hole pull-out in the time that air bag module is assembled in to above-mentioned air cell covering, above-mentioned air bag module is by being formed by connecting above-mentioned air bag and above-mentioned charging blower and above-mentioned supporter.
The mode that above-mentioned shoestring also can be disposed at the position of above-mentioned retaining hole with front end is held in above-mentioned maintaining part under folding state.In addition, above-mentioned maintaining part can be formed by the slit that is formed at above-mentioned protecting cloth, and the surperficial tape member that can be sutured in above-mentioned protecting cloth by both ends forms, and also can be formed by the attachment that above-mentioned protecting cloth and above-mentioned shoestring can be engaged.
Above-mentioned airbag apparatus also can have the temporary fixed unit that carries out the location of above-mentioned air bag module in the time that above-mentioned air bag module is assembled in to above-mentioned air cell covering.And, above-mentioned temporary fixed unit can be by being formed at the engaging hole of above-mentioned inner housing and being formed at above-mentioned supporter and can forming with the hook of above-mentioned engaging hole engaging, can be formed by the lug boss that is formed at the notch of above-mentioned inner housing and be formed at above-mentioned supporter and can be inserted through above-mentioned notch, also can be by being formed at the inner side of above-mentioned air cell covering and can forming with the rib of above-mentioned air bag module engaging.
Above-mentioned shoestring can be made up of the base cloth for air bag, can be formed by the ribbon for seatbelt, can be formed by lamellar metal, also can bear the lamination coating or the resin material that launch the intensity of the power that produces and impact by the expansion of above-mentioned air bag and form by having.
Above-mentioned shoestring has the lug that forms the portion that grips, and the direction that this lug can be outstanding along the front end from above-mentioned shoestring forms, and also can form along the direction from the front end of above-mentioned shoestring turns back.In addition, above-mentioned retaining hole also can have the extension forming along the bearing of trend incised notch of above-mentioned lug.
Invention effect
According to above-mentioned airbag apparatus of the present invention, by forming retainer by the supporter of writing board shape roughly, the retainer side wall portion that can make the reason that becomes fish mouth phenomenon does not exist and prevents the generation of fish mouth phenomenon.In addition, retainer does not have side wall portion and has the required MIN area of installation of charging blower, shoestring, therefore can realize the lightweight of retainer, and then can realize the lightweight of airbag apparatus.
In addition; by by inserting into the shoestring before retaining hole (; shoestring before assembling) maintaining part that keeps is formed at protecting cloth; can not make shoestring sagging from the air bag module before air cell covering assembling; shoestring can not be made dirty, hook or be held down; make air bag module be formed as compact packaging style, and can easily process air bag module.And shoestring, forming from the mode of retaining hole pull-out, therefore also can improve operability when air bag module is assembled in to air cell covering.
In addition, folding maintenance of mode by the front-end configuration with shoestring in the position of retaining hole, air bag after can making shoestring and folding is close to and the front end of shoestring is positioned, can make air bag module be formed as compact packaging style, and can easily shoestring be pulled out from retaining hole.
In addition, by forming engaging portion by slit, tape member or attachment, can easily form engaging portion.
In addition, by the temporary fixed unit of configuration air bag module, can easily shoestring be disposed to the position that can pull out from retaining hole, and can improve operability when air bag module is assembled in to air cell covering.
In addition, by utilizing hook, lug boss or rib to form temporary fixed unit, can easily form temporary fixed unit, can easily air bag module be temporarily fixed on to air cell covering.
In addition, by forming shoestring by the predetermined material such as base cloth, ribbon, can easily form to have and can bear the shoestring that launches the intensity of the power that produces and impact by the expansion of air bag.
In addition, by forming lug at shoestring, can easily shoestring be pulled out from retaining hole.And, by forming extension in retaining hole, can increase the gap between retaining hole and the leading section of lug, can easily grip lug.
Brief description of the drawings
Fig. 1 is the block diagram that represents the airbag apparatus of the first embodiment of the present invention.
Fig. 2 is the fragmentary detail view of the airbag apparatus shown in Fig. 1, is (A) junction surface of air bag and shoestring, is (B) upward view of airbag apparatus, is (C) birds-eye view of retainer.
Fig. 3 is the lateral plan of the air bag module of the airbag apparatus shown in presentation graphs 1, (A) state before the maintenance of expression shoestring, (B) state after the maintenance of expression shoestring.
Fig. 4 is the figure that represents the assembling procedure of air bag module, (A) represents the first operation, (B) represents the second operation, (C) represents the 3rd operation.
Fig. 5 is the lateral plan that represents the air bag module of the airbag apparatus of the second embodiment of the present invention, (A) state before the maintenance of expression shoestring, (B) state after the maintenance of expression shoestring.
Fig. 6 is the lateral plan that represents the air bag module of the airbag apparatus of the 3rd embodiment of the present invention, (A) state before the maintenance of expression shoestring, (B) state after the maintenance of expression shoestring.
Fig. 7 is the figure that represents the airbag apparatus of the 4th embodiment of the present invention, (A) represents the lateral plan of air bag module, (B) represents the upward view of airbag apparatus.
Fig. 8 is the figure that represents the airbag apparatus of other embodiments of the present invention, (A) represents the 5th embodiment, (B) represents the 6th embodiment.
Fig. 9 is the figure that represents the shoestring of the airbag apparatus of other embodiments of the present invention, (A) represent the 7th embodiment, (B) represent the 8th embodiment, (C) represent the 9th embodiment, (D) represent the tenth embodiment.
Figure 10 is the figure that represents the air cell covering of the airbag apparatus of other embodiments of the present invention, (A) represents the 11 embodiment, (B) represents the 12 embodiment.
Detailed description of the invention
Below, utilize Fig. 1~Figure 10, the embodiment of airbag apparatus of the present invention is described.At this, Fig. 1 is the block diagram that represents the airbag apparatus of the first embodiment of the present invention.Fig. 2 is the fragmentary detail view of the airbag apparatus shown in Fig. 1, is (A) junction surface of air bag and shoestring, is (B) upward view of airbag apparatus, is (C) birds-eye view of retainer.Fig. 3 is the lateral plan of the air bag module of the airbag apparatus shown in presentation graphs 1, (A) state before the maintenance of expression shoestring, (B) state after the maintenance of expression shoestring.
As shown in FIG. 1 to 3, the airbag apparatus 1 of the first embodiment of the present invention has: air bag 2 folded and that expand and launch when urgent conventionally time; To the charging blower 3 of air bag 2 supply gas; The retainer 4 of fixation balloon 2 and charging blower 3; The air cell covering 5 of storage air bag 2; And the protecting cloth 6 that the folded state of air bag 2 is kept, air cell covering 5 has: the plate-like portion 51 that forms automobile interior face; The expansion that is disposed at the back side of plate-like portion 51 and forms air bag 2 launches the inner housing 52 of path; Be formed at multiple retaining holes 53 that inner housing 52 also can keep retainer 4; And being formed at the engaging hole 54 of inner housing 52, retainer 4 has: be formed as the roughly supporter 41 of writing board shape; And be formed at supporter 41 and can with the hook 42 of engaging hole 54 engagings; air bag 2 has retaining hole of being inserted through 53 and is installed on supporter 41 and is formed as the shoestring 21 of ring-type; protecting cloth 6 has the maintaining part 61 keeping being inserted through retaining hole 53 shoestring 21 before; shoestring 21 is held in maintaining part 61 in the mode that can pull out from retaining hole 53 in the time that air bag module 11 is assembled in to air cell covering 5, and this air bag module 11 is by making air bag 2 and charging blower 3 be formed by connecting with supporter 41.
Above-mentioned airbag apparatus 1 is for example co-pilot seat airbag apparatus, is installed on the instrument carrier panel (not shown) in the front surface configuration of co-pilot seat.Therefore, the surface of air cell covering 5 (plate-like portion 51) forms a part for instrument carrier panel, forms a part for automobile interior face.In addition, airbag apparatus 1 has the fixing bracket 7 of using of air bag that is fixed on the lower surface of retainer 4 by attaching partss such as bolt/nut.By being fixed on the reinforcement inner structure of waiting for bus by fixing such air bag with bracket 7, airbag apparatus 1 is fixed on vehicle body.In addition,, in Fig. 2 (B), for convenience of explanation, omit the fixing figure with bracket 7 of plate-like portion 51 and air bag.
As shown in Fig. 2 (B), above-mentioned charging blower 3 is the gas generators that produce the gas of supplying with to air bag 2, for example, form the roughly profile of circular plate shape.Charging blower 3 is embedded in the peristome forming in the substantial middle portion of the supporter 41 of formation retainer 4, clamp supporter 41 by flange part 31 and the clasp (not shown) of the inner side that is disposed at air bag 2, be fixed on retainer 4 by the attaching partss such as bolt/nut 32.A part (for example, bolt) for attaching parts 32 also can be integrally formed in clasp.In addition, at this, illustrate the situation of the charging blower 3 of dish-type, but also can use the structure of the column type of the profile that forms substantial cylindrical shape.
In addition, charging blower 3 is connected with not shown ECU (electronic control unit), the instrumentation value based on acceleration pick-up etc. and being controlled.When ECU perception or foresee the collision of vehicle, while promptly slowing down, charging blower 3 is lighted a fire by the spark current from ECU, makes the medicament burning of the inside that is stored in charging blower 3 and produces gas, to air bag 2 supply gas.
As Fig. 2 (A) and (B), above-mentioned air bag 2 has the peristome 22 of inserting for charging blower 3, is clamped in clasp and forms between the supporter 41 of retainer 4, is fixed on retainer 4 by attaching parts 32.Be formed with the aperture 23 inserting for attaching parts 32 in the periphery of the peristome 22 of air bag 2.In addition,, in Fig. 2 (A), for convenience of explanation, air bag 2 only illustrates near of base end part (connecting portion being connected with charging blower 3), omits other parts.In addition, air bag 2 is fixed on retainer 4 with folded state conventionally time, is kept the folded state of air bag 2 by protecting cloth 6 (also referred to as package panel, packing sheet).
As Fig. 3 (A) and (B), above-mentioned protecting cloth 6 for example configures in the surperficial mode that covers the air bag 2 after folded.Protecting cloth 6 is for example fixed in the following way: make a part of engaging of the attaching parts 32 of one end and fixation balloon 2, cover the surface of the air bag 2 after folded, make a part of engaging of the other end and attaching parts 32.Protecting cloth 6 can be the shape that only covers the outer peripheral face (all sides) of the air bag 2 after folded, can be also the outer peripheral face of air bag 2 and the shape of both ends of the surface covering after folded.In addition, protecting cloth 6 is not limited to the overall writing board shape of the outer peripheral face that can cover air bag 2, also can be made up of two banded parts of the part that only can cover the outer peripheral face of air bag 2.
As shown in Fig. 1 and Fig. 2 (B), above-mentioned air cell covering 5 is to make plate-like portion 51 and inner housing 52 form the resin forming product forming.Plate-like portion 51 and inner housing 52 can form by injection moulding, also can be by deposited inner housing 52 back side in plate-like portion 51 is formed integratedly.In addition, the structure of air cell covering 5 and shape are not limited to graphic structure and shape, can suitably use the structure and the shape that used all the time.
Plate-like portion 51 is for example the parts that form a part for the automobile interior faces such as instrument carrier panel.In the region of inner side of inner housing 52 that is positioned at plate-like portion 51, the shape that will ftracture while launching is formed with the tear line (not shown) that is formed as thin-walled accordingly with expanding at air bag 2.Tear line is for example formed as roughly H word shape, and plate-like portion 51 crackings are an opposite house portion, centered by hinge part (not shown), split around.In addition the mode that, tear line for example also can singly be opened with a portion is formed as roughly " コ " font.
In addition, the mode that air cell covering 5 can be fixed on to form respectively with the instrument carrier panel of vehicle instrument carrier panel forms, and also can form with the instrument carrier panel of vehicle.In the situation that air cell covering 5 is made as to embedded type with respect to instrument carrier panel, the periphery of plate-like portion 51 forms in the mode of the peristome that can be installed on instrument carrier panel, and is configured for the pin, the snap-latch piece that are fixed on instrument carrier panel.In addition, air cell covering 5 is being made as one-piece type in the situation that with respect to instrument carrier panel, plate-like portion 51 forms instrument carrier panel.So, by air cell covering 5 is made as to embedded type or one-piece type, can be corresponding to the form of various airbag apparatus.
Inner housing 52 is made up of rectangular the wall of erectting the tubular at the back side of being located at plate-like portion 51.Particularly, inner housing 52 has a pair of the first wall 52a relative on the roughly fore-and-aft direction of vehicle and a pair of the second wall 52b relative on the roughly left and right directions of vehicle.Generally speaking, the first wall 52a is a pair of wall that forms the length direction of inner housing 52, and the second wall 52b is a pair of wall that forms the Width of inner housing 52.
Hinge part is made up of plate-like portion 51 and the connecting portion of inner housing 52, for example, form by a part for inner housing 52 being formed as to the part that thin-walled forms.As shown in Figure 1, also can configure in the periphery of hinge part the strengthening part 55 of multiple thin-walleds.So, by configuration strengthening part 55, the dispersing or alleviate the impact while cracking of the door portion can suppress plate-like portion 51 and ftracture time.In addition, in the case of by deposited inner housing 52 in plate-like portion 51 and making a part (door portion) cracking of plate-like portion 51 and launching, also can form hinge part by the roughly U word shape portion of the deposited part that is formed at inner housing 52.
As shown in Figure 1, inner housing 52 has the multiple retaining holes 53 for keeping retainer 4.For example respectively form two retaining holes 53 at a pair of the first wall 52a that forms inner housing 52.In addition, for example respectively form a retaining hole 53 at a pair of the second wall 52b that forms inner housing 52., retaining hole 53 be formed on the roughly fore-and-aft direction of vehicle relatively or form inner housing 52 length direction a pair of the first wall 52a and on the roughly left and right directions of vehicle relatively or form a pair of second wall 52b of the Width of inner housing 52.
The shape of retaining hole 53 and the shoestring 21 of inserting accordingly, for example, is formed as left and right directions slotted hole.In addition, retaining hole 53 has the shape that shoestring 21 can be held in to easy fit shape.Particularly, retaining hole 53 has gap in the heavy wall direction of shoestring 21.By forming this gap, can make shoestring 21 (being retainer 4) move on the expansion expansion direction of air bag 2, can alleviate the impact that air bag 2 expands while expansion.
In addition, as shown in Figure 1, inner housing 52 has the engaging hole 54 that retainer 4 engagings is become to easy fit shape.Such engaging hole 54 forms a part for the temporary fixed unit of air bag module 11, and engaging is formed at the hook 42 of supporter 41.Engaging hole 54 is for example formed at the pars intermedia of the retaining hole 53 forming at the first wall 52a.The gap in engaging hole 54 is for example formed as the size roughly equal with the gap of retaining hole 53.By forming such gap, can make hook 42 move on the expansion expansion direction of air bag 2, can avoid hindering the float function of shoestring 21 and supporter 41.In addition,, the in the situation that of not needing temporary fixed unit in the time of assembling air bag module 11, also can omit engaging hole 54.
As shown in Fig. 2 (A)~(C), above-mentioned retainer 4 has the roughly supporter 41 of writing board shape.Supporter 41 is for example formed as having the writing board shape of the area in the peristome that can be accommodated in inner housing 52, has: the peristome 43 for charging blower that charging blower 3 is inserted through to central portion; Be formed at the periphery of charging blower peristome 43 fixed orifice 44 for charging blower of fixing charging blower 3; And be formed at the fixed orifice 45 for shoestring of both ends fixing shoestring 21.Supporter 41 can be oblong shape, can be rectangular shape, can be elliptical shape, can be also that other are polygon-shaped.In addition, supporter 41 can be metal system, can be also resin, but for lightweight, is preferably made as resin.
As shown in Fig. 2 (B), charging blower 3 is inserted in peristome 43 for charging blower, and the attaching parts 32 that is fixed on the flange part 31 of charging blower 3 is inserted through fixed orifice 44 for charging blower.In addition, the attaching parts 46 (for example, bolt/nut, rivet etc.) that shoestring 21 is fixed on to supporter 41 is inserted through fixed orifice 45 for shoestring.In addition, the fixing means of shoestring 21 is not limited to graphic method, for example, also can the lower surface of supporter 41 form can engaging shoestring 21 jut, after shoestring 21 is inserted through to jut, is inserted through jut and carries out anticreep (with reference to Fig. 8) with bracket 7 plate-shaped members such as grade fixing air bag.
As shown in Fig. 2 (C) and Fig. 3, the side surface part (end on vehicle fore-and-aft direction) on the length direction of supporter 41 is erect and is provided with a pair of hook 42.Hook 42 for example by a part for supporter 41 is extended upward than the upper surface of supporter 41 and make its leading section downward U-shaped turning back form.Degree of depth basis and the position relationship in the engaging hole 54 of inner housing 52 of hook 42 are set.Hook 42 for example forms with supporter 41, in resinous situation, forms by injection moulding, in metal situation, forms by pressure forming.Such hook 42 forms a part for the temporary fixed unit of air bag module 11, therefore can be formed as compared with existing clamping hooked structure weak in intensity, can realize lightweight.In addition,, the in the situation that of not needing temporary fixed unit in the time of assembling air bag module 11, also can similarly omit hook 42 with engaging hole 54.
As shown in Fig. 2 (A), shoestring 21 has the roughly T word shape that has possessed two arm 21a and a shank 21b, and arm 21a and shank 21b are formed as band shape.But such structure is only an example, can suitably change according to conditions such as the intensity of the configuration of the shape of supporter 41, retaining hole 53, shoestring 21, shoestring 21 also can separate three strip-shaped members that form by arm 21a and shank 21b and form.
Being inserted through with arm 21a the retaining hole 53, the shank 21b that form at the first wall 52a is inserted through the mode of retaining hole 53 forming at the second wall 52b and is configured.By so shoestring 21 being connected with the first wall 52a and the second wall 52b, can make gap in the first wall 52a and the second wall 52b, between retainer 4 and air cell covering 5 (inner housing 52) reduce, can suppress the air bag 2 that air bag 2 expands while expansion and expose to outside.
In addition, be formed with the fixing hole 21c that uses in the end of arm 21a and shank 21b.After the end of arm 21a and shank 21b is inserted through retaining hole 53, with each fixing overlapping by the hole 21c mode consistent with the shoestring fixed orifice 45 of supporter 41, and connected by attaching parts 46.By such processing, shoestring 21 can form the annulus that is inserted through retaining hole 53, and makes supporter 41 be held in inner housing 52 (air cell covering 5).In addition, be formed with lug 21d in one end (front end) of shoestring 21 (arm 21a and shank 21b).When lug 21d is formed in the assembling operation of air bag module for the portion that grips of the outside pull-out shoestring 21 from retaining hole 53.
Shoestring 21 is for example by forming below: for the base cloth of air bag 2; For the ribbon of seatbelt; Lamellar metal; Or have and can bear by air bag 2 expand lamination coating or the resin material of the intensity of launching the power that produces and impact.That is, shoestring 21 has the flexibility of the degree that can be formed as ring-type, and has can bear by air bag 2 and expand and launch the power that produces and the intensity of impact.Generally speaking,, if for the base cloth of air bag 2, for the ribbon of seatbelt, easily meet these conditions, easily obtain.The in the situation that of fabric, the lamination coatings such as these base cloths, ribbon, also can be overlapping multiple and form a shoestring 21.
Particularly, shoestring 21 is in view of not seen by occupant, (for example can divert the fragment, off gauge of the base cloth that produces, ribbon in the manufacturing process of air bag, seat safety belt apparatus, product, the product bursting at the seams in end etc. that outward appearance is bad), also can make the generation of waste material reduce.
In addition, as shown in Fig. 2 (A), shoestring 21 is sutured in air bag 2.Particularly, shoestring 21 is connected in the base end part of air bag 2 by suturing part 21e.Because attaching parts 46 is inserted through the assembly portion of shoestring 21, therefore need to form suturing part 21e to avoid the mode of attaching parts 46.At this, utilize the assembly portion of shoestring 21 to sew up, but also arm 21a and shank 21b can be sutured in respectively to air bag 2.
So, by one end of shoestring 21 (arm 21a and shank 21b) is connected with air bag 2, can in the time manufacturing airbag apparatus 1, air bag 2 and shoestring 21 be processed as a part, can easily process to the assembling operation of supporter 41.In addition, above-mentioned shoestring 21 is only an example to the joint method of air bag 2, also can replace sew up and engage by lining cement.
In addition, as shown in Figure 1, for example, for retainer 4 being fixed on to the fixing back side that is installed on retainer 4 (supporter 41) with bracket 7 of air bag of not shown car inner structure (, reinforcement etc.).Air bag is fixing is for example fixed on retainer 4 (supporter 41) by attaching parts 32 with bracket 7 together with charging blower 3.Air bag is fixing can be formed as left and right monomer with bracket 7, also can be formed as left-right integrated.In addition, air bag is fixing is not limited to graphic structure and shape with bracket 7, according to the size of retainer 4, material, the suitably change with the condition such as the position relationship of be connected car inner structure.
Above-mentioned airbag apparatus 1 as shown in Figure 3, is at least produced on retainer 4 (supporter 41) and is fixed with the air bag module 11 of the state of air bag 2 and charging blower 3 in Fabrication procedure.Now, in order to maintain the folded state of air bag 2, protecting cloth 6 is covered in the surface of air bag 2.Protecting cloth 6 has subtend retaining hole 53 and inserts the maintaining part 61 that previous shoestring 21 keeps, and maintaining part 61 is formed by the slit 62 that is formed at protecting cloth 6.In addition, air bag module 11 also can have the fixing bracket 7 of using of air bag.
As shown in Fig. 3 (A), under the state before the maintenance of shoestring 21, in shoestring 21 from the sagging state of air bag module 11.Therefore,, when carrying, when assembling operation, become that shoestring 21 is made dirty under this state, hook or the reason that is held down.In addition, in the time that air bag module 11 is assembled in to air cell covering 5, sagging shoestring 21 must be inserted through to retaining hole 53, become the reason that operability reduces.
Therefore, in the present embodiment, as shown in Fig. 3 (B), by folding a part for shoestring 21 and be inserted in the slit 62 of protecting cloth 6, make shoestring 21 be held in maintaining part 61.Now, the mode that shoestring 21 is disposed at the position of retaining hole 53 with lug 21d is held in maintaining part 61 under folding state.By such structure, can not make shoestring 21 sagging from air bag module 11, and be formed as compact packaging style, can easily process air bag module 11.
At this, Fig. 4 is the figure that represents the assembling procedure of air bag module, (A) represents the first operation, (B) represents the second operation, (C) represents the 3rd operation.In each figure, in order easily to understand summary of the invention, shoestring 21 entirety are tinted and illustrated.In addition, for convenience of explanation, omit the figure of the plate-like portion 51 of air cell covering 5.
The first operation shown in Fig. 4 (A) is the operation that air bag module 11 is temporarily fixed on to air cell covering 5.Particularly, air bag module 11 is inserted in to the inside of inner housing 52, makes the hook 42 and 54 engagings of engaging hole of retainer 4.Now, as shown in the figure, engaging is disposed at towards the position of retaining hole 53 in the front end (lug 21d) of the shoestring 21 of maintaining part 61.
The second operation shown in Fig. 4 (B) is the operation that pulls out shoestring 21 from retaining hole 53.Particularly, grip the lug 21d of shoestring 21 from the outside of retaining hole 53, and pull out to the outside of inner housing 52.So, in the present embodiment, shoestring 21 forms in the mode that can pull out from retaining hole 53 simply, therefore can improve operability when air bag module 11 is assembled in to air cell covering 5.
The 3rd operation shown in Fig. 4 (C) is the operation that shoestring 21 is fixed on to supporter 41.Particularly, be that the fixing of shoestring 21 is inserted through to attaching parts 46 and the operation that is fixed with hole 21c.For example, as shown in Fig. 4 (A), in the case of inserting bolt 46a (attaching parts 46) from the interior side direction supporter 41 of air bag 2, as shown in Fig. 4 (C), around hanging the leading section of shoestring 21 and making bolt 46a insert the fixing hole 21c that uses, nut 46b (attaching parts 46) and bolt 46a are screwed togather, thereby shoestring 21 is fixed on to supporter 41.
According to the airbag apparatus 1 of the first above-mentioned embodiment, by forming retainer 4 by the supporter 41 of writing board shape roughly, the retainer side wall portion that can make the reason that becomes fish mouth phenomenon does not exist and prevents the generation of fish mouth phenomenon.In addition, retainer 4 does not have side wall portion and has the required MIN area of installation of charging blower 3, shoestring 21, therefore can realize the lightweight of retainer 4, and then can realize the lightweight of airbag apparatus 1.
The airbag apparatus 1 of other embodiments of the present invention then, is described with reference to Fig. 5~Fig. 8.At this, Fig. 5 is the lateral plan that represents the air bag module of the airbag apparatus of the second embodiment of the present invention, (A) state before the maintenance of expression shoestring, (B) state after the maintenance of expression shoestring.Fig. 6 is the lateral plan that represents the air bag module of the airbag apparatus of the 3rd embodiment of the present invention, (A) state before the maintenance of expression shoestring, (B) state after the maintenance of expression shoestring.Fig. 7 is the figure that represents the airbag apparatus of the 4th embodiment of the present invention, (A) represents the lateral plan of air bag module, (B) represents the upward view of airbag apparatus.Fig. 8 is the figure that represents the airbag apparatus of other embodiments of the present invention, (A) represents the 5th embodiment, (B) represents the 6th embodiment.In addition,, in each figure, the constructional delails identical with the airbag apparatus 1 of above-mentioned the first embodiment marked to identical Reference numeral and the repetitive description thereof will be omitted.
Fig. 5 (A) and (B) shown in the second embodiment in, the surperficial tape member 63 that maintaining part 61 is sutured in protecting cloth 6 by both ends forms.Even by so tape member 63 being disposed to the surface of protecting cloth 6, also can form gap folding sagging shoestring 21 and that insert.In the first embodiment, there is air bag 2 in the inside of slit 62, therefore consider according to the collapsed shape of air bag 2 situation that shoestring 21 is inserted of being difficult to.On the other hand, in the second embodiment, shoestring 21 is inserted between protecting cloth 6 and tape member 63, therefore can bring impact to the collapsed shape of air bag 2 etc., can easily shoestring 21 be inserted.
In addition, in the second embodiment, except the both ends of suture zone parts 63, can also sew up top, and the space of inserting shoestring 21 is formed as bag-shaped.In this case, by the degree of depth of regulation bags, can be only make lug 21d be disposed at the position of retaining hole 53 by shoestring 21 being inserted into depths, can realize the high efficiency of operation.
Fig. 6 (A) and (B) shown in the 3rd embodiment in, maintaining part 61 is formed by the face fastener 64 of the surface configuration at protecting cloth 6 and shoestring 21.Particularly, as shown in Fig. 6 (A), there is first surface fastener 64a in the surface configuration of protecting cloth 6, have second fastener 64b in the internal surface configurations of shoestring 21.First surface fastener 64a and second fastener 64b make either party be configured to convex, make the opposing party be configured to matrix in the mode that can connect.By such face fastener 64 (first surface fastener 64a and second fastener 64b), shoestring 21 can be held in to the surface of protecting cloth 6.In addition, face fastener 64 can engage by lining cement, also can engage by sewing up.
And shoestring 21 also can have the 3rd fastener 64c and the fourth face fastener 64d of the outside face that is disposed at shoestring 21.The 3rd fastener 64c and fourth face fastener 64d make either party be configured to convex, make the opposing party be configured to matrix in the mode that can connect.Only by above-mentioned face fastener 64 (first surface fastener 64a and second fastener 64b), may there is following situation: the position of the lug 21d of leading section is unstable, in the time making hook 42 with 54 engaging of engaging hole, lug 21d does not expose from retaining hole 53.Under these circumstances, configure the 3rd fastener 64c and fourth face fastener 64d, the leading section of shoestring 21 is fixed on to a part for shoestring 21, thereby can makes the position stability of lug 21d.
In addition, above-mentioned face fastener 64 is examples for the attachment that protecting cloth 6 and shoestring 21 can be engaged, also can replace face fastener 64 and uses lining cement, the adhesive tape etc. with the bonding force that can peel.
Fig. 7 (A) and (B) shown in the configuration of having changed shoestring 21 and hook 42 of the 4th embodiment.Particularly, as shown in Fig. 7 (A), shoestring 21 is disposed at the side surface part (end of vehicle fore-and-aft direction) on the length direction of supporter 41, and hook 42 is disposed at the side surface part (end of left and right vehicle wheel direction) on the Width of supporter 41.In other words, as shown in Fig. 7 (B), retaining hole 53 is formed at a pair of the first wall 52a (forming a pair of wall of the length direction of inner housing 52) relative on the roughly fore-and-aft direction of vehicle, and engaging hole 54 is formed at a pair of the second wall 52b (forming a pair of wall of the Width of inner housing 52) relative on the roughly left and right directions of vehicle.
According to the 4th such embodiment, by making hook 42 and 54 engagings of engaging hole, can carry out air bag module 11 temporary fixedly, and shoestring 21 is pulled out and is fixed on supporter 41 from retaining hole 53, play the effect same with the airbag apparatus 1 of the first above-mentioned embodiment.In addition, can utilize shoestring 21 to reduce gap in the first wall 52a, between retainer 4 and air cell covering 5 (inner housing 52), can utilize hook 42 to reduce gap in the second wall 52b, between retainer 4 and air cell covering 5 (inner housing 52), also can suppress the air bag 2 that air bag 2 expands while expansion and expose to outside.
In addition, in the 4th above-mentioned embodiment, adopt the slit 62 shown in the first embodiment as maintaining part 61, but also can form maintaining part 61 by the face fastener 64 shown in the tape member 63 shown in the second embodiment, the 3rd embodiment.
The 6th embodiment shown in the 5th embodiment shown in Fig. 8 (A) and Fig. 8 (B) has changed the structure of temporary fixed unit.Particularly, the temporary fixed unit that the 5th embodiment and the 6th embodiment are recorded relates to the temporary fixed unit that can replace hook 42 and engaging hole 54.In addition, in the airbag apparatus 1 of the 5th embodiment and the 6th embodiment, the fixing means in the airbag apparatus 1 of the fixing means of shoestring 21 and the first embodiment is different, and first therefore the fixing means of shoestring 21 be described.
As Fig. 8 (A) and (B), retainer 4 has and is formed at the lower surface of supporter 41 projection 47 of one end that can engaging shoestring 21.Projection 47 is for example can make each shoestring 21 form with the mode of the outer edge engaging of supporter 41 individually.Projection 47 can form with supporter 41 by injection moulding, also can form through hole and resin or metal pin are inserted in to through hole and are fixed from upper surface side at supporter 41 in advance.In addition, projection 47 is not limited to cylindrical shape, can be prism shape, can be to be also bent into hook-shaped shape.
In addition, retainer 4 has the confinement plate 48 of being inserted and form the anti-falling piece of shoestring 21 by projection 47.Confinement plate 48 for example forms with bracket 7 by a pair of air bag of the left and right sides configuration at charging blower 3 is fixing, and air bag is fixed and be fixed on retainer 4 with bracket 7 by attaching parts 32 together with charging blower 3.Air bag is fixing has the through hole 71 that confession projection 47 is inserted with bracket 7 (confinement plate 48), and through hole 71 has been inserted through the projection 47 of shoestring 21 and has inserted, and is fixed on retainer 4 by attaching parts 32.Therefore, it is fixing with between bracket 7 that the shoestring 21 after being inserted by projection 47 is clamped in supporter 41 and air bag, and air bag is fixing brings into play function as the anti-falling piece of shoestring 21 with bracket 7.
In addition, the structure of confinement plate 48 is not limited to graphic structure, can suitably change according to the configuration of projection 47 shape of bracket, can form respectively with the fixing bracket 7 of using of air bag, also can form etc. with bracket 7 by the air bag of roughly U word shape that forms pair of right and left bracket is fixing, can carry out various changes.
The 5th embodiment shown in Fig. 8 (A) have be formed at air cell covering 5 inner side and can with the rib 56 of air bag module 11 engagings.Such rib 56 forms temporary fixed unit when air bag module 11 is assembled in to air cell covering 5.For example, rib 56 is formed at the inside face (inner side of the first wall 52a or the second wall 52b) of inner housing 52, has the shape of the gap engaging between air bag 2 and the supporter 41 of the air bag module 11 can and being inserted in inner housing 52.In addition, the assembling operation of air bag module 11 can carry out under graphic state, also can under the state after the reversion up and down that makes figure, carry out.In addition,, in Fig. 8 (A), dot the state keeping before shoestring 21 is pulled out.
In addition, rib 56 is not limited to graphic structure, for example, can be disposed at retaining hole 53 top and can with the structure of side surface part engaging of air bag 2 that forms air bag module 11, can be also formed at plate-like portion 51 and can with the structure of top butt of air bag 2 that forms air bag module 11.
The 6th embodiment shown in Fig. 8 (B) has the lug boss 49 that can be inserted through the notch 57 forming at inner housing 52 and the notch 57 forming at supporter 41.Such lug boss 49 and notch 57 form temporary fixed unit when air bag module 11 is assembled in to air cell covering 5.Lug boss 49 for example can with the peripheral part from supporter 41, to side, outstanding mode forms, and also can as hook 42, on the position different from the level attitude of supporter 41, step be set and form.In addition, the in the situation that of making lug boss 49 with notch 57 engaging lug boss 49 is inserted through to notch 57, notch 57 is formed as the shape the lug 21d of the shoestring 21 as being held in air bag module 11 and the position consistency of retaining hole 53.
Then,, with reference to Fig. 9~Figure 10, the airbag apparatus 1 of other embodiments of the present invention is described.At this, Fig. 9 is the figure that represents the shoestring of the airbag apparatus of other embodiments of the present invention, (A) represents the 7th embodiment, (B) represents the 8th embodiment, (C) represent the 9th embodiment, (D) represent the tenth embodiment.Figure 10 is the figure that represents the air cell covering of the airbag apparatus of other embodiments of the present invention, (A) represents the 11 embodiment, (B) represents the 12 embodiment.In addition,, in each figure, the constructional delails identical with the airbag apparatus 1 of above-mentioned embodiment marked to identical Reference numeral and the repetitive description thereof will be omitted.
Shoestring 21 in the 7th embodiment that Fig. 9 (A) records is by the both sides bending of lug 21d is sewed up, thereby forms kink 21f and form lug 21d.According to such structure, can lug 21d be stretched laterally by the tension force of kink 21f, lug 21d can be formed as to three-dimensional shape, can easily grip.In addition, in Fig. 9 (A)~(C), left figure represents birds-eye view, and right figure represents lateral plan.
Shoestring 21 in the 8th embodiment that Fig. 9 (B) records is cut into the shape of lug 21d by a part for shoestring 21 and the leading section bending of shoestring 21 is sewed up, thereby forms kink 21f and form lug 21d.According to such structure, can lug 21d be stretched laterally by the tension force of kink 21f, lug 21d can be formed as to three-dimensional shape, can easily grip.
Shoestring 21 in the 9th embodiment that Fig. 9 (C) records makes lug 21d form along the direction after the leading section of shoestring 21 is turned back.Lug 21d can form respectively with shoestring 21, also the lug 21d of the leading section that is formed at shoestring 21 can be turned back and sews up.According to such structure, in the time that shoestring 21 is inserted in to maintaining part 61 foldedly, can make the edge engaging of lug 21d and maintaining part 61 (slit 62, tape member 63), can easily position.In addition, by protecting cloth 6 is disposed between shoestring 21 and lug 21d, can push laterally lug 21d, can easily grip.
As mentioned above, shoestring 21 has the lug 21d that forms the portion that grips, and the direction that lug 21d can be outstanding along the front end from shoestring 21 forms, and also can form along the direction from the front end of shoestring 21 turns back.In addition, in the 9th embodiment shown in Fig. 9 (C), although not shown, also can form in the edge of maintaining part 61 (slit 62, tape member 63) recess with lug 21d engaging.By forming such recess, can easily carry out the location of lug 21d.
Shoestring 21 in the tenth embodiment that Fig. 9 (D) records for example, by by stacked multiple base cloths and sew up form shoestring 21 in the situation that, avoids making in the front and back of fold line L the location overlap of lignilite 21g.According to such structure, in the time that shoestring 21 is inserted in to maintaining part 61 foldedly, lignilite 21g, not across fold line L, therefore can easily fold, and lignilite 21g is not overlapping, therefore can realize the miniaturization of collapsed shape.In addition, lug 21d can not affect to the insertion of maintaining part 61,, as long as the mode becoming one with multiple base cloths is sewed up, can be therefore any lignilite 21g.
Air cell covering 5 in the 11 embodiment that Figure 10 (A) records has formed along the bearing of trend of lug 21d and has excised a part and the extension 53a of formation in a part for retaining hole 53.By forming extension 53a, retaining hole 53 has roughly T word shape.According to such structure, by forming extension 53a, can increase the gap between retaining hole 53 and the leading section of lug 21d, can easily grip lug 21d.
Air cell covering 5 in the 12 embodiment that Figure 10 (B) records has formed the extension 53a same with the 11 embodiment for the lug 21d in the 9th embodiment shown in Fig. 9 (C).According to such structure, also can increase the gap between retaining hole 53 and the leading section of lug 21d, can easily grip lug 21d.
In the above-described embodiment, the situation that the present invention is applicable to co-pilot seat airbag apparatus has been described, but as long as adopting the airbag apparatus of same structure, also go for airbag device for driver's seat, side air bag device, curtain airbag, knee airbag device, pedestrian airbag apparatus etc.
The present invention is not limited to above-mentioned embodiment, for example, the fixing means of the shoestring 21 in the 5th embodiment and the 6th embodiment can be also the fixing means of the first embodiment record etc., in the scope that does not depart from aim of the present invention, can carry out various changes, this is natural.

Claims (8)

1. an airbag apparatus, has: air bag, the folded and expansion of expanding when urgent conventionally time; Charging blower, to described air bag supply gas; Retainer, fixing described air bag and described charging blower; Air cell covering, receives described air bag; And protecting cloth, keep the folded state of described air bag,
Described airbag apparatus is characterised in that,
Described air cell covering has: plate-like portion, forms automobile interior face; Inner housing, be disposed at the back side of described plate-like portion and form described air bag expansion launch path; And multiple retaining holes, be formed at described inner housing and can keep described retainer,
Described retainer has and is formed as the roughly supporter of writing board shape,
Described air bag has and is inserted through described retaining hole and is installed on described supporter and is formed as the shoestring of ring-type,
Described protecting cloth has the maintaining part keeping being inserted through described retaining hole described shoestring before,
Described shoestring to be can be held in described maintaining part from the mode of described retaining hole pull-out in the time that air bag module is assembled in to described air cell covering, and described air bag module is by being formed by connecting described air bag and described charging blower and described supporter.
2. airbag apparatus according to claim 1, is characterized in that,
Described shoestring is disposed at the position of described retaining hole mode with front end is held in described maintaining part under folding state.
3. airbag apparatus according to claim 1, is characterized in that,
Described maintaining part is sutured in the surperficial tape member of described protecting cloth, maybe the attachment of described protecting cloth and described shoestring joint can be formed by the slit, the both ends that are formed at described protecting cloth.
4. airbag apparatus according to claim 1, is characterized in that,
Described airbag apparatus has the temporary fixed unit that carries out the location of described air bag module in the time that described air bag module is assembled in to described air cell covering.
5. airbag apparatus according to claim 4, is characterized in that,
Described temporary fixed unit by be formed at the engaging hole of described inner housing and be formed at described supporter and can with the hook of described engaging hole engaging, be formed at the notch of described inner housing and be formed at described supporter and can be inserted through the lug boss of described notch or be formed at described air cell covering inner side and can form with the rib of described air bag module engaging.
6. airbag apparatus according to claim 1, is characterized in that,
Described shoestring is by the base cloth for air bag, ribbon, lamellar metal for seatbelt or have and can bear the lamination coating or the resin material that launch the intensity of the power that produces and impact by the expansion of described air bag and form.
7. airbag apparatus according to claim 1, is characterized in that,
Described shoestring has the lug that forms the portion that grips, and described lug is along forming or form along the direction from the front end of described shoestring turns back from the outstanding direction of the front end of described shoestring.
8. airbag apparatus according to claim 7, is characterized in that,
Described retaining hole has the extension forming along a bearing of trend excision part for described lug.
CN201380005572.2A 2012-01-30 2013-01-21 Airbag apparatus Expired - Fee Related CN104066627B (en)

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JP6311548B2 (en) * 2014-09-17 2018-04-18 豊田合成株式会社 Airbag device for passenger seat
CN211280937U (en) * 2019-09-27 2020-08-18 奥托立夫开发公司 Airbag module

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