CN101384454B - Air bag and air bag system - Google Patents
Air bag and air bag system Download PDFInfo
- Publication number
- CN101384454B CN101384454B CN2007800051425A CN200780005142A CN101384454B CN 101384454 B CN101384454 B CN 101384454B CN 2007800051425 A CN2007800051425 A CN 2007800051425A CN 200780005142 A CN200780005142 A CN 200780005142A CN 101384454 B CN101384454 B CN 101384454B
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- CN
- China
- Prior art keywords
- air bag
- extractor vent
- gas
- air extractor
- cover
- 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.)
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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
- B60R21/2338—Tethers
-
- 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
-
- 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
- B60R21/2346—Soft diffusers
-
- 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
- B60R2021/23324—Inner walls crating separate compartments, e.g. communicating with vents
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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
- B60R21/2338—Tethers
- B60R2021/23382—Internal tether means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
An air bag having a vent hole covered with a lid member from the inside of the air bag wherein the vent hole is closed by the lid member or covered to have a small opening in the initial expansion stage of the air bag, and when the pressure in the air bag is boosted, the lid member is pushed out smoothly from the vent hole by gas pressure in the air bag and the vent hole is opened or covered with the lid member to have a large opening. An air bag system equipped with that air bag is also provided. The rear panel (14) of the air bag (10) is provided with a vent hole (18) which is covered with the lid member (60) from the inside of the air bag (10). An inflator (36) is arranged in an inflator opening (16) in the center of the rear panel (14). End portion of the lid member (60) on the central side of the rear panel (14) is coupled with the rear panel (14) through a patch cloth (61) on the periphery of the opening (16). End portion of the lid member (60) closer to the outer circumferential side of the rear panel (14) than the vent hole (18) is not coupled with the rear panel (14).
Description
Technical field
The present invention relates to following a kind of air bag, it comprises: air extractor vent, flow out from air bag inside to the air bag outside by making gas, and the occupant is flexibly blocked by air bag; And cover, the inboard covering air extractor vent from air bag flows out from described air extractor vent with restriction gas.And, the invention still further relates to airbag apparatus with this air bag.
Background technology
As everyone knows, air extractor vent is set on air bag, when automotive occupant etc. is absorbed in the air bag of expansion, gas is flowed out via this air extractor vent from air bag is inner, thereby utilize air bag flexibly to block this automotive occupant etc. and retrain.
In TOHKEMY 2005-199987 communique, put down in writing the air bag that covers air extractor vent from the air bag inboard by cover.In above-mentioned communique, ratio air extractor vent in this cover is fixed on the air bag near the end of charging blower one side (air bag center side), and between front (occupant's opposite face) that is sandwiched in this air bag on the peripheral part of end at air bag of the opposite side of this air extractor vent (air bag outer circumferential side) and back, and by tearing mode and the above-mentioned part stitching of seam can remove joint with charging blower.
In the air bag of above-mentioned communique, the expansion initial stage that expands by the gas from charging blower at this air bag is removed to utilize and is torn seam with the state that the front and the back of air bag engages with cover, becomes the overlapping state of cover and air extractor vent.Thus, restriction gas flows out from this air extractor vent, and air bag inside becomes high pressure rapidly, and air bag expands rapidly.
Then, when air bag is inner when surpassing authorized pressure, tear seam and break, separate the front and back of air bag, and remove the engagement state of above-mentioned part and cover, and cover is extruded outside air bag from air extractor vent by the gaseous tension in the air bag.Thus, air extractor vent is opened, and during air bag after automotive occupant is absorbed in expansion, gas flows out from air bag is inner via this air extractor vent, can flexibly block this automotive occupant by air bag thus and retrain.
Patent documentation 1: TOHKEMY 2005-199987 communique
In the air bag of above-mentioned TOHKEMY 2005-199987 communique, because cover is fixed on the air bag by tearing seam, thereby the problem that exists cover successfully to extrude from air extractor vent.
Summary of the invention
The object of the present invention is to provide a kind of air bag and airbag apparatus with this air bag, covering the air bag of air extractor vent from the air bag inboard by cover, by cover air extractor vent is closed or become little aperture in the expansion initial stage of air bag, when the pressure in the air bag raise, cover was successfully extruded from air extractor vent by the gaseous tension in the air bag and air extractor vent is opened or is become big aperture.
The air bag that the gas by from charging blower of first viewpoint of the present invention expands, have air extractor vent and cover, this cover is configured in the inboard of this air bag, to cover this air extractor vent, it is characterized in that, the engaged at end of one side of the close above-mentioned charging blower of the above-mentioned air extractor vent of ratio in this cover is on air bag, and the end that is in an opposite side with this charging blower across this air extractor vent does not engage with air bag; In the expansion initial stage that air bag expands by the gas from charging blower ejection, this cover was because should be inboard overlapping with above-mentioned air extractor vent from this air bag from the gas of charging blower ejection, this air extractor vent is closed or becomes little aperture; Then, raise by the pressure in the air bag, this cover is extruded outside air bag from this air extractor vent by air bag gas inside pressure, this air extractor vent is opened or is become big aperture.
In a mode of the present invention, the internal separation that is provided with in this air bag this air bag is the interior sheet of the first central Room with second Room that surrounds this first Room; Sheet is provided with the interconnecting part that is used to be communicated with this first Room and second Room in this; The following formation of this air bag: expanded in this first Room, then gas flows out from this first Room to second Room via this interconnecting part, is expanded in this second Room; Above-mentioned air extractor vent is used to be communicated with this second Room and air bag outside; The following formation of this interconnecting part: make gas from this first Room in this air extractor vent flows out to this air bag.
In another way of the present invention, in this air bag, be provided with interior airbag; Airbag is provided with connection and is somebody's turn to do the inner and air bag in-to-in interconnecting part of interior airbag in this; The following formation of this air bag: at first import gas in the airbag in this and make that airbag expands in this, then gas flows out to air bag is inner via this interconnecting part airbag inside in this, and the remainder of this air bag is expanded; The following formation of this interconnecting part: make gas in this airbag inside in this air extractor vent flows out to this air bag.
In another way of the present invention, in this air bag, be provided with gas emission direction limiting part, this gas emission direction limiting part will be limited in from this charging blower on the direction of above-mentioned air extractor vent from the direction of this charging blower ejection gas.
In another way of the present invention, on the air bag medial surface that is in an opposite side across above-mentioned air extractor vent, be provided with the insertion section of above-mentioned cover with above-mentioned charging blower; In this cover, be inserted in this insertion section across the end that this air extractor vent is in an opposite side with this charging blower.
In another way of the present invention, above-mentioned air bag has left half side gasbag that expands in occupant's left forward side and the right half gasbag that expands in occupant's right forward side, is respectively equipped with above-mentioned air extractor vent on this left half side gasbag and right half gasbag.
The airbag apparatus of second viewpoint of the present invention comprises the air bag of first viewpoint and to the charging blower of this air bag supply gas.
This charging blower can be provided with in the mode towards above-mentioned air extractor vent ejection gas.
In air bag of the present invention and airbag apparatus, in the expansion initial stage that air bag expands by the gas from charging blower ejection, cover is pressed in by the gas from this charging blower ejection on the medial surface of this air bag and becomes the state overlapping with air extractor vent.Thus, this air extractor vent is closed or is become little aperture.Therefore, can limit gas and flow out from this air extractor vent, air bag expands rapidly.
In addition, in the present invention, the engaged at end of close charging blower one side of the ratio air extractor vent in the cover is on air bag.That is, this cover is bonded on the air bag at the upstream side of the gas emission direction of charging blower.Therefore, can also prevent that this cover from rolling from air extractor vent because of the ejection gas from charging blower.
Then, raise by the pressure in the air bag, this cover is extruded outside air bag from this air extractor vent by air bag gas inside pressure, and this air extractor vent is opened or become big aperture thus.Therefore, when the occupant was absorbed in the air bag of this expansion, gas flowed out outside air bag from this air extractor vent.Consequently, the occupant is flexibly blocked by air bag and is restrained.
In the present invention, because cover is bonded on the air bag by tearing seam etc., thereby successfully extruded from air extractor vent by the gaseous tension in the air bag.
In a mode of the present invention, owing to be divided into first Room and second Room that surrounds this first Room of the central authorities of this air bag in the air bag by interior sheet, air extractor vent is used to be communicated with this second Room and air bag outside, gas flows out along the direction towards air extractor vent from the interconnecting part that is communicated with this first Room and second Room, thereby in the expansion initial stage of air bag (second Room), cover is pressed in by this eluting gas pressure on the medial surface of air bag and air extractor vent is sealed.
In another way of the present invention, because gas flows out along the direction towards air extractor vent from the interconnecting part that is configured in the interior airbag in the air bag, thereby in the expansion initial stage of air bag, cover is pressed in by this eluting gas pressure on the medial surface of air bag and air extractor vent is sealed.
In another way of the present invention owing to utilize gas emission direction limiting part that gas is sprayed to air extractor vent from charging blower, so cover be pressed on the medial surface of air bag by gas from this charging blower ejection, thereby to the good sealing effect of air extractor vent.
In another way of the present invention, because the pressure in air bag fully raise before cover is extruded from air extractor vent, cover is inserted in the insertion section always, thereby can prevent that cover from rolling from the air extractor vent changing of the relative positions or cover, has improved the leak tightness to each air extractor vent.
In the present invention, also can adjust the time that air extractor vent is opened by length, width, the ventilation hole size of selecting cover.
Description of drawings
Among Fig. 1, Fig. 1 a is the block diagram of the air bag in the embodiment, and Fig. 1 b is provided in a side of the longitudinal sectional view of the airbag apparatus on the vehicle.
Horizontal cross when Fig. 2 is the airbag inflation of Fig. 1.
Horizontal cross when Fig. 3 is the airbag inflation of Fig. 1.
Horizontal cross when Fig. 4 is the airbag inflation of Fig. 1.
Horizontal cross when Fig. 5 is the airbag inflation of Fig. 1.
Fig. 6 is the air bag in the embodiment and the cutaway view of airbag apparatus.
Fig. 7 is the air bag of Fig. 6 and the airbag apparatus cutaway view when blocking the occupant.
Fig. 8 is the air bag of Fig. 6 and the exploded perspective view of airbag apparatus.
Fig. 9 is the birds-eye view of rear panel of the air bag of Fig. 6.
Figure 10 is the birds-eye view of the rear panel of the air bag in the embodiment.
Figure 11 is the air bag in the embodiment and the cutaway view of airbag apparatus.
Figure 12 is the air bag of Figure 11 and the airbag apparatus cutaway view when blocking the occupant.
Figure 13 is the air bag in the embodiment and the cutaway view of airbag apparatus.
Figure 14 is the air bag of Figure 13 and the airbag apparatus cutaway view when blocking the occupant.
Figure 15 is the birds-eye view of rear panel of the air bag of Figure 13.
Figure 16 is the block diagram from the opposite unilateral observation of occupant time of two air bags.
Figure 17 is the cutaway view along the XVII-XVII line of Figure 16.
Figure 18 is the cutaway view along the XVIII-XVIII line of Figure 17.
Figure 19 is the block diagram from occupant's unilateral observation time of two air bags.
The specific embodiment
Below, with reference to the description of drawings embodiments of the present invention.
Fig. 1 a is the air bag in the embodiment and the block diagram of airbag apparatus; Fig. 1 b is the vertical sectional view of this air bag and airbag apparatus.Wherein, Fig. 1 a, Fig. 1 b represent the state behind the airbag inflation.Fig. 2 to Fig. 5 is respectively that expansion initial stage, expansion mid-term stage, expansion later stage and the occupant of this air bag of expression is absorbed in the horizontal cross of the state of this air bag.
In this embodiment, air bag 100 is front passenger's seat air bags of automobile.
This front passenger's seat is accommodated in the shell 101 after being folded with air bag 100, expands by charging blower 102.This front passenger's seat is located on the instrument carrier panel 103 with air bag 100.Top with lid 104 covering shells 101.105 expression Windshield.
In this embodiment, in this air bag 100, be provided with the little interior airbag 140 of this air bag of volume ratio 100.Airbag 140 is configured in the base end side (side opposite with the occupant during expansion) of this air bag 100 in being somebody's turn to do, and is provided with charging blower 102 in this in the airbag 140.In this, be respectively equipped with the inside that is communicated with airbag 140 in this and the in-to-in connected entrance 141 of air bag 100 on the left and right side of airbag 140.
Be respectively equipped with air extractor vent 110 on the left and right side of this front passenger's seat with air bag 100, cover 120 covers on each air extractor vent 110 from the inboard of this air bag 100.Each cover 120 crosses this air extractor vent 110 ground at the roughly fore-and-aft direction of air bag 100 (direction that connects occupant side and a side opposite with this occupant) and extends, and the end of an opposite side with this occupant is being sewn to by seam 121 on the side (medial surface) of air bag 100 than the base end side of air extractor vent 110 near air bags 100.The end of the occupant side of each cover extends to than the side (occupant one side) of air extractor vent 110 near the front end of air bag 100.The end of this occupant side of each cover 120 and up and down side edge part all do not engage with air bag 100.
When the collision happens of the airbag apparatus that said structure is installed etc. under the situation, charging blower 102 actions and to air bag 100 in, spray gas.Air bag 100 expands to push open by this gas and covers 104, and in the indoor expansion of car.
In this air bag 100, in at first will importing in the airbag 140 and make that airbag 140 expands in this from the gas of charging blower 102, then gas flow in the air bag 100 in interior airbag 140 by each connected entrance 141 of airbag in this 140, and the remainder of air bag 100 is expanded.At this moment, from the gas of airbag in this 140 by each connected entrance 141 to the left and right the left and right side of air bag 100 (that is, to) flow in the air bag 100.Therefore, as shown in Figure 2 to Figure 3, the cover 120 that covers each air extractor vent 110 from the inboard of this air bag 100 is pressed in from these connected entrance 141 effluent airs on the medial surface of air bag 100 and with air extractor vent 110 sealings.
Consequently, the pressure in air bag 100 does not have the fully expansion initial stage of rising, and restriction gas flows out from each air extractor vent 110, reaches pressure in the height in the air bag 100 rapidly, and air bag 100 expands rapidly.
In addition, since in each cover 120 than each air extractor vent 110 (promptly near a side of the cardinal extremity of air bags 100, the upstream side of the air-flow that flows out from each connected entrance 141) is bonded on the side of this air bag 100, thereby can prevents that also each cover 120 from rolling from each air extractor vent 110 because of this eluting gas pressure.
Then, raise by the pressure in the air bag 100, as shown in Figure 4, each cover 120 is extruded outside air bag 100 from each air extractor vent 110 by air bag 100 gas inside pressure, and each air extractor vent 110 is opened thus.Therefore, when the occupant was absorbed in the air bag 100 of this expansion, gas flowed out outside air bag 100 from each air extractor vent 110, and the occupant is flexibly blocked by this air bag 100 and be restrained.
In addition, in this air bag 100,, thereby can successfully be extruded by the gaseous tensions in the air bag 100 from each air extractor vent 110 because each cover 120 is bonded on the air bag 100 by tearing seam etc.
Fig. 6 and Fig. 7 are the air bag in the embodiment and the cutaway view of airbag apparatus; Fig. 8 is the exploded perspective view of this air bag and airbag apparatus; Fig. 9 is the birds-eye view of the rear panel of this air bag.Wherein, Fig. 6 represents that the occupant is absorbed in air bag state before, and Fig. 7 represents that the occupant is absorbed in air bag state afterwards.
In this embodiment, air bag 10 is driver-seat airbags of vehicle.
This air bag 10 comprises: the anter 12 that constitutes occupant's opposite face; Constitute the rear panel 14 of the outside face of a side opposite with this occupant's opposite face; With the internal separation of this air bag 10 be first Room 1 and second Room 2 as sheet 22A, 22B in first and second of internal part; Be used to be communicated with the exterior air extractor vent 18 of this second Room 2 and air bag 10; Cover the covers 60 of these air extractor vents 18 etc. from air bag 10 inside.
This anter 12, rear panel 14 and first, second interior sheet 22A, 22B are formed by weaving cotton cloth of circle respectively.The diameter of this anter 12 and rear panel 14 are roughly the same, and its outer peripheral edges portion sews up by seam 15 each other and forms the bag shape.This seam 15 is carried out around setting with circular along the periphery of anter 12 and rear panel 14.This seam 15 is formed by suture etc., but is not limited thereto.
On this rear panel 14, be provided with charging blower opening 16 and above-mentioned air extractor vent 18.This opening 16 is configured in the central authorities of rear panel 14.On the circumference of this opening 16, the sticking patch cloth 61 of being weaved cotton cloth and being formed by annular arrangement is installed from the outside of air bag 10.The seam of this sticking patch cloth 61 and rear panel 15 is sewed up in label 62 (Fig. 9) expression.This seam 62 is carried out around setting with circular along the periphery of this sticking patch cloth 61.Around opening 16, be provided with the screw jack 20 that connects this sticking patch cloth 61 and rear panel 14.
In this embodiment, on this rear panel 14, be provided with two air extractor vents 18.Above-mentioned two air extractor vents 18 are positioned at a reciprocal side across the opening 16 of these rear panel 14 central authorities.
On above-mentioned air extractor vent 18, from the superimposed cover 60 of inboard difference of air bag 10.In this embodiment, each cover 60 is a strip-shaped parts, crosses each air extractor vent 18 ground along the radial direction of rear panel 14 and extends.
As shown in Figure 9, in this embodiment, each cover 60 fuses with above-mentioned sticking patch cloth 61, and the end (base end side) of each rear panel 14 center side links to each other with this sticking patch cloth 61.That is, in this embodiment, the base end side of each cover 60 is being bonded on the rear panel 14 by this sticking patch cloth 61 respectively than the side (that is charging blower 36 1 sides described later) of each air extractor vent 18 near rear panel 14 central authorities.
As shown in the figure, each cover 60 extends to than the side of each air extractor vent 18 near the periphery of rear panel 14.In addition, each cover 60 can have also that each front is walked around the sidepiece of air bag 10 and the length that reaches to the front 12 medial surface.The front of each cover 60 and a pair of side edge part that extends along the radial direction of rear panel 14 all do not engage with rear panel 14 (and anter 12).
Be provided with in above-mentioned first sheet 22B in the sheet 22A and second in the inside of this air bag 10.Roughly configuration with one heart of sheet 22A, 22B and anter 12 and rear panel 14 is sewed up by the seam 23B as first engaging gear between its outer peripheral edges portion in this first and second.The inside of air bag 10 is divided into first Room 1 and second Room 2 that surrounds this first Room 1 of central authorities by sheet 22A, 22B in this first and second.First Room 1 is the inboard of interior sheet 22A, 22B.Each air extractor vent 18 is configured in the zone of this second Room 2 of encirclement in the rear panel 14.
In this first and second, be respectively equipped with connected entrance 27,28 on sheet 22A, the 22B as the interconnecting part that is communicated with first Room 1 and second Room 2.In this embodiment, in second of rear panel 14 1 sides the connected entrance 28 of sheet 22B be configured in this in second among sheet 22B, when air bag 10 expands on the radial direction of this air bag 10 position relative with each air extractor vent 18.
As shown in Figure 8, in this embodiment, be provided with 4 connected entrances 28 on the sheet 22B in second, wherein 2 connected entrances 28 are relative with each air extractor vent 18, and the part except that air extractor vent 18 of remaining 2 connected entrance and rear panel 14 relatively is configured.
In addition, sticking patch that reinforcement uses etc. also can be installed on the circumference of opening 24, connected entrance 27,28 and air extractor vent 18.
Central authorities at the retainer 30 that is used to install this air bag 10 are provided with charging blower installing port 32, are provided with screw jack 34 around it.
The roughly cylindrical shape of charging blower 36 is provided with gas vent 36a on the lateral circle surface of its cylinder axis direction front.In this embodiment, the circumferencial direction equal intervals of charging blower 36 be provided with four above-mentioned gas ejiction opening 36a.Charging blower 36 sprays gas from above-mentioned gas ejiction opening 36a to the radiation direction.The outstanding fixedly flange 38 of charging blower that is provided for of lateral circle surface from the centre portion (than the side of this gas vent 36a) of the cylinder axis direction of this charging blower 36 near the rear end.On this flange 38, be provided with screw jack 40.This front of this charging blower 36 is inlaid on the charging blower installing port 32.
When being installed to air bag 10 on the retainer 30, make the charging blower of sheet 22B in second superimposed with the circumference of the charging blower usefulness opening 16 of rear panel 14 with the circumference of opening 24, and superimposed with the circumference of the charging blower installing port 32 of retainer 30.Then, the thru-bolt 44 of pressure ring 42 is passed each screw jack 26,20,34,40 of sheet 22B, rear panel 14, retainer 30 and flange 38 in second, and at its front end fastening nut 46, thereby the second interior sheet 22B, rear panel 14 and charging blower 36 are fixed on the retainer 30.
Thus, the charging blower of the second interior sheet 22B is connected on the charging blower usefulness circumference of opening 16 of rear panel 14 with the circumference of opening 24, and outer peripheral edges portion of sheet 22A, 22B is connected with each other in first and second, and the central portion of the first interior sheet 22A is connected on the anter 12.
Then, folded airbag 10, and installed module cover 48 constitutes airbag apparatus thus to cover the folded formation of this air bag 10 on retainer 30.Wherein, also can be before air bag 10 be installed to retainer 30 folded airbag 10 in advance.This airbag apparatus is located on the automobile steering wheel 50.
When the collision happens of the airbag apparatus that said structure is installed etc. under the situation, charging blower 36 actions and to air bag 10 in, spray gas.Push module cage 48 open by this gas expansion, air bag 10 is in the indoor expansion of car.
In this air bag 10, at first supply with in first Room 1 from the gas of charging blower 36 and expanded in this first Room 1, then gas flows out from first Room 1 to second Room 2 via connected entrance 27,28, is expanded in second Room 2.
In this air bag 10, because the front of each cover 60 does not engage with air bag 10 (rear panel 14), thereby flow out and stage of being expanded in second Room 2 from first Room 1 to second Room 2 at gas, gaseous tension in second Room 2 is insufficient, thereby the possibility that exists each cover 60 to separate with each air extractor vent 18, but because the gas that passes the connected entrance 28 relative with each air extractor vent 18 is in each air extractor vent 18 flows out to second Room 2, thereby each cover 60 is pressed on each air extractor vent 18 by this eluting gas pressure and with each air extractor vent 18 sealing.
In addition, since in each cover 60 than each air extractor vent 18 (promptly near a side of air bag 14 central authorities, the upstream side of the air-flow that flows out from each connected entrance 28) is bonded on this rear panel 14, thereby can prevents that also each cover 60 from rolling from each air extractor vent 18 because of this eluting gas pressure.
In this air bag 10,, and directly be not communicated with, thereby very rapidly expand with air extractor vent 18 because this first Room 1 is littler with air bag 10 whole specific volumes mutually.And as mentioned above, in the initial stage that expands in second Room 2, air extractor vent 18 is in sealing state, limits second Room, 2 interior gases thus and flows out to the air bag outside by this air extractor vent 18, and second Room 2 also becomes high interior the pressure rapidly.Consequently, air bag 10 whole premature inflations.
Then, raise by the pressure in the air bag 10, as shown in Figure 7, each cover 60 is extruded outside air bag 10 from each air extractor vent 18 by air bag 10 gas inside pressure, and each air extractor vent 18 is opened thus.Consequently, when the occupant was absorbed in the air bag 10 of this expansion, gas flowed out to the outside of air bag 10 from this air extractor vent 18, and the occupant is flexibly blocked by this air bag 10 and restrained thus.
In addition, in this air bag 10, because the front of each cover 60 do not engage with air bag 10, thereby when the gaseous tension in the air bag 10 fully raise, each cover 60 was successfully extruded from each air extractor vent 18 by these air bag 10 interior gaseous tensions.
In the embodiment of this Figure 10, cover each air extractor vent 18 by the cover 60A that was arranged in 61 minutes with sticking patch cloth.Each cover 60A is a strip-shaped parts, crosses each air extractor vent 18 ground along the radial direction of rear panel 14 and extends.In this embodiment, the end that is in rear panel 14 center side (base end side) of each cover 60A is being bonded on the rear panel 14 by seam 63 than the side (being charging blower 36 1 sides) of each air extractor vent 18 near the central authorities of this rear panel 14.
Each cover 60A extends to than the side of each air extractor vent 18 near the periphery of this rear panel 14.The end that is in these rear panel 14 outer circumferential sides of each cover 60A and a pair of side edge part that extends along the radial direction of this rear panel 14 all do not engage with rear panel 14.
Other structures of this embodiment are identical with the embodiment of above-mentioned Fig. 6 to Fig. 9, and in Figure 10, the label identical with Fig. 6 to Fig. 9 represented identical part.
In this embodiment, each cover 60A also with the air bag 10 of Fig. 6 to Fig. 9 in each cover 60 move in the same manner.
Figure 11 and Figure 12 are the air bag of another embodiment and the cutaway view of airbag apparatus.Wherein, Figure 11 represents the state before the occupant is absorbed in air bag, and Figure 12 represents the state after the occupant is absorbed in air bag.
The air bag 10A of this embodiment forms following structure: in the air bag 10 of above-mentioned Fig. 6 to Fig. 9, replace by interior sheet 22A, 22B the internal separation of this air bag 10 for first Room 1 of central authorities with surround second Room 2 of this first Room 1, airbag 70 in being provided with.
Should in the charging blower of airbag 70 (in Figure 11, Figure 12, omit label with the charging blower of rear panel 14 central authorities of the circumference of opening and air bag 10A with opening 16, with reference to Fig. 8) circumference superimposed, by pressure ring 42 they are fixed on the charging blower mounting hole 32 (equally with reference to Fig. 8) of retainer 30.Then, charging blower 36 is configured in this in airbag 70 with opening via above-mentioned charging blower.
Other structures of this embodiment are identical with the embodiment of above-mentioned Fig. 6 to Fig. 9, and in Figure 11, Figure 12, the label identical with Fig. 6 to Fig. 9 represented identical part.
In the airbag apparatus of the air bag 10A with said structure, when working under the situation when charging blower 36 vehicle collisions etc., this air bag 10A at first inwardly supplies with in the airbag 70 and makes from the gas of charging blower 36 that airbag 70 expands in this, then gas via connected entrance 71 from this in airbag 70 in air bag 10A, flow out, the remainder (overall volume of air bag 10A deduct behind the volume of airbag 70 in this and the volume part that obtains) of this air bag 10A is expanded.
Similarly, in this air bag 10A, owing to the stage of in air bag 10A, flowing out the remainder expansion that makes air bag 10A at gas from interior airbag 70, gaseous tension in this air bag 10A is insufficient, thereby the possibility that exists each cover 60 to separate with each air extractor vent 18, but owing to flow out in the air bag 10A towards each air extractor vent 18 by the gas of the connected entrance 71 relative with each air extractor vent 18, thereby each cover 60 is pressed on each air extractor vent 18 by this eluting gas pressure and with air extractor vent 18 sealings.
In addition, in this embodiment, similarly, since in each cover 60 than each air extractor vent 18 (promptly near a side of air bag 14 central authorities, the upstream side of the air-flow that flows out from each connected entrance 71) be bonded on this rear panel 14, thereby each cover 60 can not rolled from each air extractor vent 18 because of this eluting gas pressure.
In this air bag 10A, similarly, specific volume is littler mutually with air bag 10A integral body owing to be somebody's turn to do interior airbag 70, and directly is not communicated with air extractor vent 18, thereby very rapidly expands.And as mentioned above, in the initial stage that the remainder of air bag 10A expands, air extractor vent 18 is in sealing state, and the gas that limits thus in the air bag 10A flows out to air bag is outside via this air extractor vent 18, and the remainder of air bag 10A also becomes rapidly presses in high.Consequently, the whole premature inflation of air bag 10A.
Then, raise by the pressure in the air bag 10A, as shown in figure 12, each cover 60 is extruded outside air bag 10A from each air extractor vent 18 by air bag 10A gas inside pressure, and each air extractor vent 18 is opened thus.Consequently, during air bag 10A after the occupant is absorbed in expansion, gas flows out to the outside of air bag 10A from this air extractor vent 18, and the occupant is flexibly blocked by this air bag 10A and restrained.
In addition, in this air bag 10A, similarly, because the front of each cover 60 do not engage with air bag 10A, thereby when the gaseous tension in the air bag 10A fully raise, each cover 60 was successfully extruded from each air extractor vent 18 by the gaseous tension in this air bag 10A.
Figure 13 and Figure 14 are the air bag in the embodiment and the cutaway view of airbag apparatus; Figure 15 is the birds-eye view of the rear panel of this air bag.Wherein, Figure 13 represents that the occupant is absorbed in air bag state before, and Figure 14 represents that the occupant is absorbed in air bag state afterwards.
As shown in figure 15, in this embodiment, this insertion section 80 is formed by the little cloth sheet that roughly is rectangle.Two opposite side parts of rectangular little cloth sheet are sewn on the rear panel 14 by seam 81.The front of cover 60 is passed between cloth sheet and this back plate 14 slidably from remaining two opposite side of cloth sheet.
Other structures of this air bag 10B are identical with the embodiment of above-mentioned Fig. 6 to Fig. 9, and in Figure 13 to Figure 15, the label identical with Fig. 6 to Fig. 9 represented identical part.And also the airbag apparatus with Fig. 6 to Fig. 9 is identical to have the manner of execution of airbag apparatus of this air bag 10B.
In this air bag 10B, because the pressure in this air bag 10B fully raise before each cover 60 is extruded from air extractor vent 18, the front of each cover 60 is inserted in the insertion section 80 always, thereby can prevent that each cover 60 from rolling from the front of air extractor vent 18 changing of the relative positions or each cover 60, improved the leak tightness of each air extractor vent 18.
The respective embodiments described above are an example of the present invention, and the present invention is not limited to the respective embodiments described above.
In the respective embodiments described above, make the connected entrance of the interior airbag that is located in the air bag, interior sheet relative with air extractor vent, so that from the gas of charging blower ejection towards air extractor vent, but also can in the air bag that interior airbag, interior sheet etc. are not set, gas emission direction limiting part be set, will being limited on the direction of air extractor vent, or be arranged to make direction to be direction charging blower itself towards air extractor vent from this charging blower ejection gas from the direction that charging blower sprays gas.
With reference to Figure 16 to Figure 19 two air bags of embodiments of the present invention are described.
Figure 16 be under the state that this pair air bag 210 expands from the unilateral observation opposite with the occupant to block diagram; Figure 17 is the cutaway view along the XVII-XVII line of Figure 16; Figure 18 is the cutaway view along the XVIII-XVIII line of Figure 17; Figure 19 is the block diagram during from occupant's unilateral observation air bag 210.
This air bag 210 is provided in a side of the air bag of the airbag device for front passenger's seat on the Automobile instrument.Below, sometimes left half side gasbag and right half gasbag are called air bag respectively simply.
The interconnecting part 216 that is communicated with between left half side gasbag 214 that this air bag 210 is included in the right half gasbag 212 that the right side in occupant the place ahead expands, expand in the left side in occupant the place ahead and the base end side with this right half gasbag 212 and left half side gasbag 214.Each air bag 212,214 is all to expanding away from this interconnecting part 216 and towards occupant's direction.
In this air bag 210, engage the centre portion of the expansion direction of the centre portion of expansion direction of right half gasbags 212 and left half side gasbag 214 by seam 252.
In this embodiment, this air bag 210 constitutes shell by sheet 218,220,222,224,226,228.
Sheet 218 (back in sheet) constitutes the opposite face between the air bag of base end side of each air bag 212,214 and the occupant side of interconnecting part 216.Sheet 220 (back outer plate) constitutes a side opposite with opposite face of each air bag 212,214, and constitutes a side opposite with the occupant of interconnecting part 216.
Sheet 222,224 (sheet in preceding) constitutes the opposite face between each air bag 212,214.
Sheet 226,228 (preceding outer plate) constitutes the face of an opposite side with this opposite face of each air bag 212,214.
The seam (lignilite) of interior sheet 218 in above-mentioned back and back outer plate 220 is sewed up in label 230 expressions; Label 232,234 represents to sew up the seam of interior sheet 218 in above-mentioned back and preceding interior sheet 222,224 respectively; Label 236,238 represents to sew up the seam of above-mentioned back outer plate 220 and preceding outer plate 226,228 respectively.
On preceding outer plate 226,228, be respectively equipped with air extractor vent 227.
As shown in figure 16, suturing part 244, the 246 outstanding tongue-shaped connecting portions 248,250 that are provided with of interior sheet 218 and preceding interior sheet 222,224 will be sewed up between this connecting portion 248,250 by seam 252 from the back.
On the back outer plate 220 of the lateral surface that constitutes interconnecting part 216, be provided with a pair of slit 254,254 that is used to insert charging blower.Bar-shaped charging blower 256 is inserted in this slit 254,254 and is configured.
On the right flank of the left surface of left half side gasbag 214 and right half gasbag 216, be respectively equipped with air extractor vent 227, cover 270 covered on each air extractor vent 227 from the inboard of each air bag 214,216.Each cover 270 crosses this air extractor vent 227 ground and extends on the roughly fore-and-aft direction of each air bag 212,214 (direction that connects occupant side and a side opposite with this occupant), the end of a side opposite with this occupant is being sewn to by seam 271 on each air bag 212,214 than the side of air extractor vent 227 near cardinal extremities.The end of the occupant side of each cover 270 extends to than the side (occupant side) of air extractor vent 227 near the front end of each air bag 212,214.The end of this occupant side of each cover 270 and up and down side edge part all do not engage with each air bag 212,214.
When the collision happens of the airbag apparatus that said structure is installed etc. under the situation, charging blower 256 actions and to air bag 210 in, spray gas.Push lid open by this gas expansion, make air bag 210 thus in the indoor expansion of car.
When air bag 210 expanded, the cover 270 that covers each air extractor vent 227 from the inboard of each air bag 212,214 was crushed on the medial surface of each air bag 212,214 and with air extractor vent 227 sealings.
Consequently, in the expansion initial stage, restriction gas flows out from each air extractor vent 227, becomes high interior the pressure in the air bag 210 rapidly, and air bag 200 expands rapidly.
In addition and since in this cover 270 than each air extractor vent 227 near a side engagement of cardinal extremities on the side of above-mentioned each air bag 212,214, thereby can prevent each cover 270 and roll from each air extractor vent 227.
Then, raise by the pressure in the air bag 210, each cover 270 is extruded outside air bag 210 from each air extractor vent 227 by air bag 210 gas inside pressure, and each air extractor vent 227 is opened thus.Therefore, when the occupant was absorbed in air bag 210 after this expansion, gas flows out outside air bag 210 from each air extractor vent 227, and was restrained so the occupant is flexibly blocked by this air bag 210.
In addition, when this air bag 210 expands, even air bag 212 or 214 expands earlier therein, under the situation of another air bag 214 or 212 after expansions, owing to connect by seam 252 between the centre portion of right half gasbag 212 and left half side gasbag 214, thereby after beginning expansion, the air bag that begins to expand earlier begins to expansion direction pulling another air bag in the stage expansion delay of comparing the initial stage.Thus, each air bag 212,214 smooth and left and right sides approximate equality ground expansion from the expansion initial stage.
Under air bag 210 expands the state that finishes, between the leading section of right half gasbag 212 and left half side gasbag 214, be formed with spatial portion 213, this spatial portion 213 opens wide to the occupant.Then, the right half gasbag 212 of expansion blocks occupant's right chest, and the left half side gasbag 214 of expansion blocks occupant's left chest, and is relative with spatial portion 213 near the breastbone.Antagonistic force when therefore, being applied near the breastbone supporting air bag diminishes.
The aperture area of length that in the present invention, can be by selecting cover, width, air extractor vent is adjusted the time that air extractor vent is opened.Diameter at air extractor vent is under the situation of 30～60mm, and the ratio air extractor vent of cover is preferably about 4～7 times of air extractor vent diameter near the length of occupant side.And the width of cover is preferably about 2～4 times of air extractor vent diameter.
In the present invention, cover also can be following structure: before more than the specified degree, cover air extractor vent at airbag inflation partly; When airbag inflation is above to specified degree, make this air extractor vent become big aperture.
In the respective embodiments described above, air extractor vent forms the circular open shape, but the shape of air extractor vent is not limited thereto, and can form different shapes such as slit-shaped.
In the respective embodiments described above, on air bag, be provided with 2 air extractor vents, also can only be provided with 1 or be provided with more than 3.
And, in the present invention, except the air extractor vent that is provided with cover, also can be provided with the open type air extractor vent that always is in open mode.
In addition, the Japanese patent application (Japanese Patent Application 2006-032702) that the application proposed based on February 9th, 2006, and quote its full content.
Claims (7)
1. air bag that expands by gas from charging blower, it has air extractor vent and cover, and this cover is configured in the inboard of described air bag, and covering described air extractor vent, described air bag is characterised in that,
The described air extractor vent of ratio in the described cover, and does not engage with air bag across the end that described air extractor vent is in an opposite side with described charging blower on air bag near the engaged at end of described charging blower one side;
In the expansion initial stage that air bag expands by the gas from charging blower ejection, described cover is overlapping from the inboard and the described air extractor vent of described air bag by described gas from the charging blower ejection, described air extractor vent is closed or becomes little aperture;
Then, raise by the pressure in the air bag, described cover is extruded outside air bag from described air extractor vent by air bag gas inside pressure, described air extractor vent is opened or is become big aperture;
On the air bag medial surface that is in an opposite side across described air extractor vent, be provided with the insertion section of described cover with described charging blower;
In the described cover, be inserted in the described insertion section across the end that described air extractor vent is in an opposite side with described charging blower.
2. air bag as claimed in claim 1 is characterized in that, the internal separation that is provided with in described air bag described air bag is the interior sheet of the first central Room with second Room that surrounds described first Room;
In described, be provided with the interconnecting part that is used to be communicated with described first Room and second Room on the sheet;
The following formation of described air bag: expanded in described first Room, then gas flows out from described first Room to second Room via described interconnecting part, is expanded in described second Room;
Described air extractor vent is used to be communicated with described second Room and air bag outside;
The following formation of described interconnecting part: it is described second indoor that gas is flowed out to towards described air extractor vent from described first Room.
3. air bag as claimed in claim 1 is characterized in that, is provided with interior airbag in described air bag;
In described, be provided with on the airbag be communicated with described in airbag inside and air bag in-to-in interconnecting part;
The following formation of described air bag: at first in described, import gas in the airbag and make described in airbag expand, then gas flows out to air bag is inner via described interconnecting part airbag inside in described, makes the remainder expansion of described air bag thus;
The following formation of described interconnecting part: make gas in described airbag inside in described air extractor vent flows out to described air bag.
4. air bag as claimed in claim 1, it is characterized in that, be provided with gas emission direction limiting part in described air bag, this gas emission direction limiting part will be limited in from described charging blower on the direction of described air extractor vent from the direction of the gas of described charging blower ejection.
5. air bag as claimed in claim 1, it is characterized in that, described air bag has left half side gasbag that expands in occupant's left forward side and the right half gasbag that expands in occupant's right forward side, is respectively equipped with described air extractor vent on described left half side gasbag and right half gasbag.
6. airbag apparatus, it comprises the described air bag of claim 1 and to the charging blower of described air bag supply gas.
7. airbag apparatus as claimed in claim 6 is characterized in that, described charging blower is provided with in the mode towards described air extractor vent ejection gas.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP032702/2006 | 2006-02-09 | ||
| JP2006032702A JP2009113502A (en) | 2006-02-09 | 2006-02-09 | Air bag and air bag device |
| PCT/JP2007/051906 WO2007091511A1 (en) | 2006-02-09 | 2007-02-05 | Air bag and air bag system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101384454A CN101384454A (en) | 2009-03-11 |
| CN101384454B true CN101384454B (en) | 2011-03-02 |
Family
ID=38345110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800051425A Expired - Fee Related CN101384454B (en) | 2006-02-09 | 2007-02-05 | Air bag and air bag system |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2009113502A (en) |
| CN (1) | CN101384454B (en) |
| WO (1) | WO2007091511A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3960550B1 (en) * | 2019-04-25 | 2024-03-13 | Autoliv Development AB | Driver airbag device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1513707A (en) * | 2002-11-06 | 2004-07-21 | 奥托里夫发展有限公司 | Improvement of safety air bag or related safety air bag device |
| CN1537753A (en) * | 2003-04-15 | 2004-10-20 | ���＼�й�ҵ��ʽ���� | Air bag system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0352265U (en) * | 1989-09-29 | 1991-05-21 | ||
| JPH08268214A (en) * | 1995-03-28 | 1996-10-15 | Takata Kk | Air bag |
| JP3760423B2 (en) * | 1996-08-30 | 2006-03-29 | 本田技研工業株式会社 | Airbag device for vehicle |
| JP4423738B2 (en) * | 2000-03-31 | 2010-03-03 | タカタ株式会社 | Airbag |
| JP4363179B2 (en) * | 2003-01-23 | 2009-11-11 | タカタ株式会社 | Air bag and air bag device |
| JP4380315B2 (en) * | 2003-04-03 | 2009-12-09 | タカタ株式会社 | Air bag, air bag device and vehicle |
-
2006
- 2006-02-09 JP JP2006032702A patent/JP2009113502A/en not_active Withdrawn
-
2007
- 2007-02-05 WO PCT/JP2007/051906 patent/WO2007091511A1/en active Application Filing
- 2007-02-05 CN CN2007800051425A patent/CN101384454B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1513707A (en) * | 2002-11-06 | 2004-07-21 | 奥托里夫发展有限公司 | Improvement of safety air bag or related safety air bag device |
| CN1537753A (en) * | 2003-04-15 | 2004-10-20 | ���＼�й�ҵ��ʽ���� | Air bag system |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2004-256091A 2004.09.16 |
| JP特开2004-314933A 2004.11.11 |
| JP特开平10-71923A 1998.03.17 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009113502A (en) | 2009-05-28 |
| WO2007091511A1 (en) | 2007-08-16 |
| CN101384454A (en) | 2009-03-11 |
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Application publication date: 20090311 Assignee: TAKATA (SHANGHAI) AUTOMOTIVE COMPONENT CO.,LTD. Assignor: Takata Corp. Contract record no.: 2013990000810 Denomination of invention: Air bag and air bag apparatus Granted publication date: 20110302 License type: Exclusive License Record date: 20131202 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180613 Address after: Tokyo, Japan Patentee after: Joyson Safety Systems Japan Co.,Ltd. Address before: Tokyo, Japan Patentee before: Takata Corp. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110302 Termination date: 20220205 |