CN101374699A - Pedestrian airbag apparatus - Google Patents
Pedestrian airbag apparatus Download PDFInfo
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- CN101374699A CN101374699A CNA2007800032176A CN200780003217A CN101374699A CN 101374699 A CN101374699 A CN 101374699A CN A2007800032176 A CNA2007800032176 A CN A2007800032176A CN 200780003217 A CN200780003217 A CN 200780003217A CN 101374699 A CN101374699 A CN 101374699A
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- covering part
- air bag
- tether
- shell
- car
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Abstract
A pedestrian airbag apparatus where portions of an airbag is connected to a case by tethers, the portions being portions which, during inflation of the airbag, expand along the outer surface of a vehicle body while spreading around the case, wherein deformation of the air bag such as warpage is suppressed from occurring in the air bag by tension of the tethers. Both ends of a cowl cover part (5a) of the air bag (5) are connected to the case (8) by the tethers (30). One end of each tether (30) is connected to a position in the middle between that area (R) of the cowl cover part (5a) which faces the case (8) and the endmost part on the left end side or the right end side of the cowl cover part (5a), and the other end of each tether (30) is connected to an end wall (8d) on the corresponding left or right side of the case (8).
Description
Technical field
The present invention relates to a kind of pedestrian airbag apparatus, it has the air bag that expands and launch along the outside face of car body, relate more specifically to a kind ofly be provided with air bag and hold the airbag apparatus of the shell of this air bag, the part of expansion around above-mentioned shell is connected with above-mentioned shell by tether during expansion in the above-mentioned air bag.
Background technology
Known a kind of pedestrian airbag apparatus, it is provided with and encloses near expand the portion air bag before the car body and block (pedestrian, bicycle occupants or the like) such as pedestrians by air bag.A kind of as this pedestrian airbag apparatus, known a kind of airbag apparatus, its air bag hold in the enclosure and when expanding air bag in the mode of expansion around shell along the car body outwardly deploying.
Described a kind of airbag apparatus in the TOHKEMY 2004-299442 communique, part in its air bag, expansion around shell when expanding expansion is connected with shell by tether, shakes when airbag inflation launches to suppress this part.
In the pedestrian airbag apparatus of above-mentioned communique; air bag is the parts that roughly are U word shape, its have enclose before the car body air plate on the width over sides of car body direction, expand launch before enclose air plate protection portion and be connected with the two ends of preceding enclosing air plate and respectively along the expand car post protection portion of expansion of the left and right sides A car post of car body.
Before be fixed on the shell near enclosing central authorities on the bearing of trend of air plate protection portion.The width of this shell on the width over sides of car body direction be less than the width that preceding encloses air plate protection portion, and when airbag inflation, both end sides on the preceding bearing of trend that encloses air plate protection portion and connected car post protection portion are respectively to launch to the mode of shell side side's expansion.
In above-mentioned communique, the both end sides on the preceding bearing of trend that encloses air plate protection portion is connected with shell by tether respectively, can suppress the shake of these parts when airbag inflation launches.
Patent documentation 1: TOHKEMY 2004-299442 communique
Above-mentioned spy opens in the 2004-299442 communique, shown in Figure 10 as communique, and an end of each tether is connected with the portion foremost of the bearing of trend both end sides of preceding enclosing air plate protection portion respectively.Therefore; when airbag inflation launches; shown in Figure 13 as communique; before enclose air plate protection portion the bearing of trend both end sides portion foremost (promptly; under the swelling state, the preceding bearing of trend both sides end face that encloses air plate) stretched to the air bag lower face side by the tension force of each tether; therefore, be easy to generate the moment that its both end sides is involved in the air bag lower face side in the both end sides of preceding enclosing the bearing of trend of air plate protection portion.So the risk of existence is possible produce distortion such as warpage, middle folding preceding enclosing in the air plate protection portion.
Summary of the invention
The purpose of this invention is to provide a kind of pedestrian airbag apparatus, in its air bag, when expanding, be connected by tether on this shell with the mode of expansion around shell part along the car body outwardly deploying, can suppress distortion such as air bag generation warpage by the tension force of this tether.
Pedestrian airbag apparatus of the present invention comprises the air bag that expands and launch along the car body outside face, the charging blower that holds the shell of this air bag and be used to make this airbag inflation, this air bag when expanding with from the mode of this shell expansion around this shell along the car body outwardly deploying, in this air bag, the part of expanding around this shell under the swelling state is connected with this shell by tether, it is characterized in that, one end of this tether is connected with following position in the air bag, under the state of this airbag inflation, above-mentioned position than above-mentioned air bag with the relative opposed area of this shell near front from the predetermined extended direction of this shell extension, and than the portion foremost of this predetermined extended direction base end side near this predetermined extended direction, the other end of this tether is connected with this shell.
In this air bag, can be at least at following binding site place by car body outside face side and with this car body outside face side opposite side combination of the portion made from this air bag, under the state of this airbag inflation, above-mentioned binding site than above-mentioned air bag with the relative opposed area of this shell near from the front of the predetermined extended direction of this shell extension and than the base end side of close this predetermined extended direction of portion foremost of this predetermined extended direction, an above-mentioned end of above-mentioned tether is by combining with the car body outside face side of this air bag with above-mentioned this shared portion of making of portion of making.
An above-mentioned end of this tether can combine with the car body outside face side of air bag by the portion of making of annular arrangement.
Above-mentioned air bag can comprise along the trailing edge of the car bonnet of car body on the width over sides of car body direction, launch before the car post covering part of enclosing covering part and roughly on above-below direction, launching along the A car post of car body, the lower end of this car post covering part with before enclose covering part and be connected, on the intersection bight of preceding enclosing covering part and car post covering part, be provided for being connected the link that encloses covering part and car post covering part before above-mentioned.
Above-mentioned air bag can comprise along the trailing edge of the car bonnet of described car body on the width over sides of car body direction, launch before the car post covering part of enclosing covering part and roughly on above-below direction, launching along the A car post of car body, the lower end of above-mentioned car post covering part with before enclose covering part and be connected, be provided with first tether and second tether as above-mentioned tether, one end of above-mentioned first tether is connected with the following connection location that before encloses in the covering part, under the state that preceding encloses the covering part expansion, above-mentioned connection location than enclose before above-mentioned covering part with the relative opposed area of shell near front from the predetermined extended direction of shell extension, and than the portion foremost of predetermined extended direction base end side near the predetermined extended direction, the other end of tether is connected with shell, middle part on the above-below direction of the upper end of second tether and car post covering part is connected, and the lower end of second tether is connected with shell.
Can on the intersection bight of preceding enclosing covering part and car post covering part, be provided for being connected the link that encloses covering part and car post covering part before above-mentioned.
Description of drawings
Fig. 1 is the block diagram that is provided with the automobile of pedestrian airbag apparatus according to an embodiment of the present invention.
Fig. 2 is the block diagram of automobile when its airbag inflation of Fig. 1.
Fig. 3 is the section-drawing along the III-III line of Fig. 1.
Fig. 4 is the planar view of the air bag after expanding.
Fig. 5 is the section-drawing along the V-V line of Fig. 4.
Fig. 6 is the section-drawing along the VI-VI line of Fig. 4.
Fig. 7 is the section-drawing along the VII-VII line of Fig. 4.
Fig. 8 is the section-drawing along the VIII-VIII line of Fig. 4.
Fig. 9 is the section-drawing along the IX-IX line of Fig. 4.
Figure 10 is the section-drawing along the X-X line of Fig. 4.
Figure 11 is the block diagram that is provided with the automobile of the pedestrian airbag apparatus of another embodiment according to the present invention.
Figure 12 is the planar view of pedestrian airbag apparatus when its airbag inflation of another embodiment according to the present invention.
Figure 13 is the planar view of pedestrian airbag apparatus when its airbag inflation of another embodiment according to the present invention.
Figure 14 is the planar view of pedestrian airbag apparatus when its airbag inflation of another embodiment according to the present invention.
The specific embodiment
In pedestrian airbag apparatus of the present invention, because when expanding, being connected with shell by tether with the mode of expansion around the shell part along the car body outwardly deploying in the air bag, so can when airbag inflation launches, suppress the shake of this part.
In the present invention, one end of tether is connected with following position in the air bag, under the state of this airbag inflation, above-mentioned position than air bag with the relative opposed area of this shell near from the front of the predetermined extended direction of this shell extension and than the base end side of close this predetermined extended direction of portion foremost of this predetermined extended direction, that is, be connected in portion foremost and air bag on this predetermined extended direction of air bag with the midway location between the relative opposed area of shell.
Correspondingly, when airbag inflation launches, portion foremost on this predetermined extended direction of this air bag (promptly, side end face on this predetermined extended direction under the swelling state, air bag) is difficult for being stretched to the air bag lower face side by the tension force of each tether, therefore, the front in this predetermined extended direction of air bag is difficult for the moment that generation is involved in this front the air bag lower face side.So, can prevent from or suppress to produce on this air bag distortion such as warpage, middle folding.
In addition, for example, as above-mentioned TOHKEMY 2004-299442 communique, extending on the width over sides of car body direction and the width over sides of car body direction both end sides of air bag expands in the mode to the expansion of shell side side respectively under the situation about launching at this air bag, above-mentioned " be connected with the following position in the air bag; under the state of this airbag inflation, above-mentioned position than air bag with the relative opposed area of this shell near front from the predetermined extended direction of this shell extension; and than the base end side of close this predetermined extended direction of portion foremost of this predetermined extended direction " in " position " be meant: air bag is at the distolateral portion foremost of width over sides of car body direction one and the shell midway location between the distolateral end of this width over sides of car body direction one, and air bag in another distolateral portion foremost of width over sides of car body direction and shell the midway location between another distolateral end of this width over sides of car body direction.
Become excessive in order air bag inside to be separated into a plurality of chambers or to prevent or suppress balloon thickness, in air bag, at least utilize the portion of making that the car body outside face side of air bag and a side opposite with this car body outside face side are combined in the portion foremost of the predetermined extended direction of this air bag with midway location place between this air bag opposed area relative with shell, in this case, can be as claim 2 by one end of tether being sewn on the air bag with the above-mentioned shared portion of making of portion of making.
According to this structure, can once carry out the installation with tether of making of air bag, can make the operation of making of air bag become easy thus.
In this case, tether is sewn on the air bag, can improves the anchoring strength of tether and air bag by making with the portion of making of annular arrangement.
In an embodiment of the present invention, air bag comprise along the trailing edge of the car bonnet of car body on the width over sides of car body direction, launch before enclose covering part and from this before enclose the car post covering part that covering part is launched upward along A car post, on the intersection bight of preceding enclosing covering part and car post covering part, be provided for being connected the link that encloses covering part and car post covering part before above-mentioned.Can suppress this car post covering part by this link shakes when the airbag inflation.
In another embodiment of the present invention, air bag comprise along the trailing edge of the car bonnet of car body on the width over sides of car body direction, launch before enclose covering part and from this before enclose the car post covering part that covering part is launched upward along A car post, and be provided with and connect second tether that encloses first tether of covering part and shell and be connected this car post covering part and shell before this.When airbag inflation, can suppress to enclose the shake of covering part before this by first tether, and can suppress the shake of car post covering part by second tether.
In addition, in this embodiment, because the upper end of described second tether is not to be connected with the portion foremost of the upper end side of car post covering part, but be connected with middle part on its above-below direction, so when airbag inflation, the portion foremost of the upper end side of car post covering part is difficult for being stretched to the air bag lower face side by the tension force of second tether, therefore, is difficult for the moment that generation is involved in this upper end side the air bag lower face side in the upper end side of car post covering part.Thus, can prevent from or suppress to produce distortion such as warpage, middle folding on its car post covering part.
In this case, except this second tether, the link that can on car post covering part and the intersection bight of before enclosing covering part, be used to be connected above-mentioned car post covering part and before enclose covering part.According to this structure, can further suppress the shake of car post covering part when airbag inflation.
Below, with reference to description of drawings an embodiment of the present invention.Fig. 1 is the block diagram that is provided with the automobile of pedestrian airbag apparatus according to an embodiment of the present invention, Fig. 2 is the block diagram of automobile when its airbag inflation of Fig. 1, Fig. 3 is the section-drawing along the III-III line of Fig. 1, Fig. 4 is the planar view of the air bag that expands, and Fig. 5 to Figure 10 is the section-drawing along the V-V line of Fig. 4 to the X-X line.Below " left and right directions " in the explanation is meant the width over sides of car body direction.
Although automobile shown in Figure 11 is a four-door sedan, the invention is not restricted to specific vehicle type.Pedestrian airbag apparatus 4 is installed in the rear portion of car bonnet 3.As shown in Figure 2, when the air bag 5 of pedestrian airbag apparatus 4 expanded, preceding air plate 2, Windshield 6 and at least a portion left and right sides A car post 7 of enclosing covered by air bag 5.
As shown in Figure 3, the air bag that pedestrian airbag apparatus 4 comprises the shell 8 that is used to hold the air bag 5 after folding, a pair of charging blower 9 (9L, 9R) that is used to air bag 5 is expanded, sealing car bonnet 3 is by with the lid 10 of opening 3a, tether 30 etc., wherein, will be connected with shell 8 with the mode of expansion around shell 8 part (enclosing the left and right sides both end sides of covering part 5a before described later) in the air bag 5, when expanding by tether 30 along the car body outwardly deploying.
In this embodiment, the folded formation of air bag 5 extends to its left end side from the right-hand member side of shell 8 always.In addition, each charging blower 9 is configured in the inside of air bag 5.
From the outstanding respectively thru-bolt 9c that is provided with of each charging blower 9 (or be installed on each charging blower 9 charging blower support (not shown)).Each thru-bolt 9c is inserted into the bolt-inserting hole on the lower surface (hypopleurite 12 described later) that is located at air bag 5 and reaches the outside of air bag 5.Each thru-bolt 9c inserts the bolt-inserting hole (omission label) on the bottom surface 8a that is located at shell 8, and from the inboard fastening nut 9d of this bottom surface 8a, thereby the lower surface of each charging blower 9 and air bag 5 is fixed on the 8a of bottom surface.
The car body trailing edge side of lid 10 is fixed on the car body by the trailing edge side of hinge (not shown) at the opening 3a of car bonnet 3, and when air bag 5 expands, rotates backward shown in the arrow theta of Fig. 3 and open.The front edge side of lid 10 for example is fixed on the car body at the front edge side of opening 3a by fastening mechanism (not shown) such as clasps.This following formation of fastening mechanism is when lid 10 is promoted by air bag 5 and when opening, removes the fastening of this fastening mechanism.
The structure of air bag 5 is described below with reference to Fig. 4 to Figure 10.
The stretch ratio of this elastic adhesive S is preferably about 200%.Although can adopt various adhesivess such as silicon class adhesives, polyurethane binding as this elastic adhesive S, but when the air bag medial surface silicon-coating class material of sheet 11,12, the preferred silicon class adhesives that adopts is as elastic adhesive S, when applying polyurethane material, preferably adopt polyurethane binding as elastic adhesive S.
Preferred this elastic adhesive S along the circumference of sheet 11,12 cross over 5 to 15mm width with 0.01 to 0.05g/cm
2Coated weight apply.
In preceding enclosing covering part 5a, the epipleurite 11 of air bag 5 and hypopleurite 12 are made portion 14 and wire by annular arrangement and are made portion 15,16,15 and combine near the middle part of sheet 11,12.Wire is made portion 15,16,15 and is extended along the width over sides of car body direction in the central authorities that preceding enclose covering part 5a.These wire are made portion 15,16,15 general arrangement shape in alignment each other.In addition, make portion 16 and near the bearing of trend that preceding encloses covering part 5a is middle, extend setting, make portion 15,15 and extend setting on the left side and the right side of the portion of making 16 respectively.It is disconnected from each other that these make portion 15,16,15.
According to this structure, the inside of enclosing covering part 5a before the air bag 5 is made portion 15,16,15 with respect to wire and is separated into chamber 17 that is in the car body front side and the chamber 18 that is in the car body rear side.
Dispose annular arrangement in each end that wire is made portion 15,16,15 and made portion 14. Sheet 11,12 is made portion 15 and middle zone of making between the portion 16 is not sewn in each left and right sides wire, thereby constitutes the interconnecting part 19 that chamber 17,18 is communicated with.
In this embodiment, in order to limit the thickness of air bag 5 under swelling state, sheet 11,12 is made portion 20,21 and is combined by making annular arrangement that portion 15 separates with wire.As shown in Figure 4, each annular arrangement is made portion 20 and is configured in and makes portion 15 than wire and enclose before more approaching on the position of left and right sides both end sides of covering part 5a, and each annular arrangement is made portion 21 and made portion 15 more near car post covering part 5b one side than wire.
Although it is not shown, but and the joint portion between the circumference of sheet 11,12 in the same manner, make in the joint portion that portion 14,20,21 combines togather sheet 11,12 making portion 15,16 and annular arrangement by each linearity, can on the air bag medial surface of sheet 11,12, apply elastic adhesive S in advance, by this elastic adhesive S that sheet 11,12 is bonding, and by respectively making portion's 14,15,16,20,21 stitchings.
As shown in Figure 4, in this air bag 5, preceding enclose covering part 5a under its swelling state at the width of described width over sides of car body direction (left and right directions) greater than the width of shell 8 on this width over sides of car body direction.Enclosing covering part 5a before being somebody's turn to do is fixed on the bottom surface 8a of shell 8 by each charging blower 9 as mentioned above at the lower surface (hypopleurite 12) of its bearing of trend center side, when air bag 5 expanded, preceding left and right sides both end sides (and each car post covering part 5b) of enclosing covering part 5a was launched in the mode of launching to these shell 8 side direction respectively.
Part left and right sides both end sides, that launch to shell 8 side direction when expanding that above-mentioned tether 30 will before enclose covering part 5a respectively is connected with shell 8.In this embodiment, as Fig. 8 and shown in Figure 10, one of each tether 30 is distolaterally made on the lower surface that portion 20 is sewn to hypopleurite 12 by annular arrangement.
As shown in drawings, each annular arrangement is made portion 20, distolateral and joint portion hypopleurite 12 that is each tether 30 is configured on the following position: preceding enclosing under the state that covering part 5a expands, above-mentioned position than the relative opposed area R (the dotted line institute enclosed areas of expression shell 8 among Fig. 4) of the same shell 8 that before encloses covering part 5a near should before enclose covering part 5a left and right sides both end sides, and ratio before encloses the portion foremost (periphery is made portion 13) of this left and right sides both end sides of covering part 5a near the bearing of trend medial side of enclosing covering part 5a before being somebody's turn to do, that is, the left end of this opposed area R (the left side end wall 8d of shell 8) and before enclose the left end side of covering part 5a periphery make midway location between the portion 13, and the right-hand member of this opposed area R (the right side end wall 8d of shell 8) and before enclose the right-hand member side of covering part 5a periphery make midway location between the portion 13.
Among the present invention, should " midway location " be meant following position: under the state that air bag 5 expands, be respectively 100% if establish the distance of making the distance of portion 13 and making portion 13 to the periphery that before encloses the right-hand member side of covering part 5a from right side end wall 8d from left side end wall 8d to the periphery that before encloses the left end side of covering part 5a, then 30 30 be respectively 10-80%, be in particular 20-60% with the distance of the joint portion (the right circles annular is made portion 20) of hypopleurite 12 with the distance of the joint portion (the left circles annular is made portion 20) of hypopleurite 12 and from right side end wall 8d to the right side tether from left side end wall 8d to the left side tether.
In this embodiment, distolateral when being connected with air bag 5 when with each tether 30 is stitched into one on the distolateral superimposed predetermined formation position of making portion 20 at annular arrangement of epipleurite 11, hypopleurite 12 and tether 30 and with them.When this tether 30 is installed, also can on the distolateral opposite face relative of tether 30 1, apply elastic adhesive S with hypopleurite 12, utilize this elastic adhesive S distolateral bonding with tether 30, and utilize annular arrangement to make portion 20 and sew up with hypopleurite 12.
As shown in figure 10, another of each tether 30 is distolateral is fixed on the left and right sides end wall 8d of shell 8 by fixed partss such as bolt 31 respectively.
To shown in Figure 6, each charging blower 9 (9L, 9R) is configured in the chamber 17 as Fig. 4.As shown in Figure 4, wherein the charging blower 9L of a side is configured to make portion 16 with respect to the wire of the central authorities that preceding enclose covering part 5a and makes portion's 15 adjacency with the wire in left side, and the charging blower 9R of opposite side is configured to make portion's 15 adjacency with the wire on right side.
In this embodiment, each charging blower 9L, 9R are cylindric and are made as from the distolateral gas ejection 9a of portion of one to radiation direction ejection gas.
To make the middle part of length direction of portion 15 relative with the wire of adjacency respectively for the gas ejection 9a of portion of each charging blower 9L, 9R.That is, each gas ejection 9a of portion is positioned at the car body front side of approximate mid-section that each wire is made the length direction of portion 15.
Be used for being connected with charging blower control circuit (not shown) respectively to the initiator (not shown) live wire bundle 9b of each charging blower 9L, 9R.The initiator of each charging blower 9L, 9R starts based on the actuation signal from this charging blower control circuit, so that each charging blower 9L, 9R ejection gas.
Although not shown, be equipped with in the automobile 1 of this pedestrian airbag apparatus 4 and be provided with various types of sensors, these sensors are used to detect automobile 1 have been waited with pedestrian and has bumped or predict that this automobile will bump with pedestrian etc.In addition, detecting sensor and prediction sensor also can be set simultaneously.The initiator that above-mentioned charging blower control circuit starts each charging blower 9L, 9R based on detection signal or prediction signal from these sensors.
How the pedestrian airbag apparatus that this structure below will be described starts.
Waited and bumped or predict under the situation that automobile 1 will bump with pedestrian etc. detecting automobile 1 by the sensor with pedestrian, actuation signal is inputed to the initiator of each charging blower 9L, 9R based on above-mentioned detection signal or prediction signal from above-mentioned charging blower control circuit, thereby start above-mentioned initiator, from each charging blower 9L, 9R ejection gas.Then, air bag 5 expands by the gas from each charging blower 9L, 9R, pushes open to cover 10 and as illustrated in fig. 2 along the outwardly deploying of car body.
In this pedestrian airbag apparatus 4, owing to be connected with shell 8 by tether 30 respectively with the left and right sides both end sides of enclosing covering part 5a to the mode of shell 8 sides expansion before the car body outwardly deploying in the air bag 5, when expanding, so when air bag 5 expands expansion, enclose the left and right sides both end sides of covering part 5a and the shake of each car post covering part 5b before this and be suppressed.
As mentioned above, because each tether 30 is configured on the following position with the joint portion of before enclosing covering part 5a, this position than the opposed area R relative that before encloses covering part 5a with shell 8 near should before enclose covering part 5a left and right sides both end sides, and than the portion foremost of the left and right sides both end sides of enclosing covering part 5a before this near should before enclose covering part 5a the bearing of trend medial side, so when air bag 5 expands expansion, before enclose covering part 5a left and right sides both end sides portion foremost (promptly, before enclose the left and right sides end face of covering part 5a under swelling state) be difficult for being stretched to the air bag lower face side by the tension force of tether 30, thereby be difficult for producing the moment that the left and right sides both end sides that will before enclose covering part 5a is involved in the air bag lower face side in the left and right sides both end sides of preceding enclosing covering part 5a.Thus, can suppress distortion such as warpage, middle folding.
In this embodiment, the portion of making 20 that utilization combines the epipleurite 11 and the hypopleurite 12 of air bag 5 is with distolateral being sewn onto on the hypopleurite 12 of each tether 30, so can once finish the installation with each tether 3 of making of air bag 5, therefore can easily be used to form the operation of making of air bag 5.
In addition, in this embodiment, because distolaterally the making portion 20 by annular arrangement and sew up with hypopleurite 12 of each tether 30, so improved the anchoring strength of each tether 30 with hypopleurite 12.
In this embodiment, utilize annular arrangement to make portion 14,20,21 and wire and make portion 15,16, and make portion 15,16 by wire and form chamber 17,18 epipleurite 11 of air bag 5 and hypopleurite 12 thickness in conjunction with confined expansion the time.Therefore, air bag 5 is simple in structure.
In addition, in this embodiment, because the gas ejection 9a of portion of each charging blower 9L, 9R is relative with the middle part that wire is made portion 15, so by applying the application force that makes sheet 11,12 disconnected from each other to sheet 11,12 from the gaseous tension of each charging blower 9L, 9R ejection, the middle part that this application force is made portion 15 in wire becomes big, can suppress pressure thus and concentrate on the both end sides that wire is made portion 15.Therefore, can promote wire to make the combination between the sheet 11,12 at end place of portion 15.The end of making portion 16 for wire too.
In addition, owing to being provided with annular arrangement, the end of making portion 15,16 in wire makes portion 14, so the combination between the sheet 11,12 is very firm.
Above-mentioned embodiment is represented an example of the present invention, the invention is not restricted to above embodiment.
For example, although the structure of above-mentioned embodiment be by an air bag 5 from left side to the right side of above-mentioned car body cover above-mentioned car body before enclose 2 periphery and left and right sides A car post 7,7, also can be to cover above-mentioned part by a plurality of air bags.For example in the embodiment of Figure 11, be provided with a pair of air bag 5L, 5R, it constitutes, and encloses 2 left half side (and periphery) and left side A car post 7 before covering by one of them air bag 5L, encloses 2 right half side (and periphery) and right side A car post 7 before covering by another air bag 5R.
Certainly, also can be provided with three with upper gasbag.Air bag also can be arranged to cover and enclose 2 peripheries and left and right sides A car post 7,7 parts in addition before above-mentioned.
In the above-described embodiment, be stitched together though a distolateral annular arrangement that also is the epipleurite 11 and the hypopleurite 12 of air bag 5 are sewed up in utilization of each tether 30 is made portion 20, each tether 30 also can be mounted to annular arrangement and make portion 20 part in addition.And, tether 30 also can by not and shared other portions of making of the portion of making between the sheet 11,12 install.
In the above-described embodiment, preceding one of the covering part 5a that encloses distolaterally distolaterally is connected with shell 8 by a tether respectively with another, also can be connected with shell 8 by two above tethers.
Figure 12 is the planar view of pedestrian airbag apparatus when its airbag inflation of another embodiment according to the present invention.
Same in the pedestrian airbag apparatus 4A of this embodiment, air bag 5A roughly is U word shape, before having, it encloses covering part 5a and car post covering part 5b, 5b, wherein, enclosing covering part 5a before above-mentioned launches in the trailing edge expansion of width over sides of car body direction (left and right directions) upper edge car bonnet 3, to enclose 2 and the bottom of Windshield 6 before the covering body, the lower edge of above-mentioned car post covering part 5b, 5b is connected with the left and right end portions of preceding enclosing covering part 5a respectively, and upwards expands along the A car post 7 of above-mentioned car body and to launch.(above-mentioned car body (precedingly enclose 2, Windshield 6, car bonnet 3, A car post 7 or the like) is not shown in Figure 12.See Fig. 1 and 2.)
In this embodiment, each car post covering part 5b has when expanding and can cover near the above-below direction length the upper end of A car post 7.
As shown in the figure, equally in this air bag 5A, enclose the width of covering part 5a on width over sides of car body direction (left and right directions) greater than the width of shell 8 on the width over sides of car body direction before under the swelling state.Before enclose the bearing of trend center side of covering part 5a lower surface (hypopleurite 12) be fixed on the bottom surface 8a of shell 8 by each charging blower 9, and when air bag 5A expanded, preceding left and right sides both end sides and connected respectively each car post covering part 5b that encloses covering part 5a launched in the mode of expanding to shell 8 sides respectively.
In this embodiment, be provided with the first tether 30A and the second tether 30B as tether, the left and right sides both end sides and shell 8, the second tether 30B that enclose covering part 5a before wherein the first tether 30A is used to connect are used to connect each car post covering part 5b and shell 8.
Promptly, under the state that preceding encloses covering part 5a expansion, one of each tether 30A distolaterally is sewn to following position: this position than the opposed area R (in Figure 12 dotted line institute enclosed areas of expression shell 8) relative that before encloses covering part 5a with shell 8 near should before enclose covering part 5a left and right sides both end sides, and ratio before encloses the portion foremost (periphery is made portion 13) of the left and right sides both end sides of covering part 5a near the bearing of trend medial side of enclosing covering part 5a before being somebody's turn to do, that is, respectively by annular arrangement make left end (the left side end wall 8d of shell 8) that portion 20 is sewn onto this opposed area R and before enclose the left end side of covering part 5a periphery make midway location between the portion 13, and the right-hand member of this opposed area R (the right side end wall 8d of shell 8) and before enclose the right-hand member side of covering part 5a periphery make midway location place between the portion 13.
And another of each tether 30A be distolateral to be seamed to by fixed parts (not shown) such as bolts on the left and right sides end wall 8d of shell 8.
The car body outside face side (hypopleurite 12) at the middle part on the above-below direction of each car post covering part 5b of distolateral and the expansion of each second tether 30B is connected.In this embodiment, each second tether 30B this one distolateral by not be used for being seamed to hypopleurite 12 with constituting the shared portion of the making (not shown) of the epipleurite 11 of each car post covering part 5b outside face and the portion of making (for example periphery is made portion 13, annular arrangement is made portion 21 etc.) that hypopleurite 12 is stitched together.
Above-mentioned one distolateral suture location ratio in hypopleurite 12 of sewing up with hypopleurite 12 of each second tether 30B constitutes the most peripheral close inboard (car post covering part 5b is in the medial side of its bearing of trend and Width) of the part of each car post covering part 5b.
Another of the second tether 30B is distolateral to be fixed to the left and right sides both end sides of left and right sides end wall 8d, front wall portion 8b or their intersection bight respectively by fixed parts (not shown) such as bolts.Yet, be used for each second tether 30B and shell 8 bonded assembly connection locations are not limited thereto.
In addition, in this embodiment, each car post covering part 5b with before enclose intersecting of covering part 5a and be provided with on the bight and be used for they are carried out bonded assembly link 40.
As shown in the figure, in this embodiment, each link 40 is a kind of triangle sheet components, these leg-of-mutton adjacent both sides respectively with car post covering part 5b with before enclose covering part 5a and be connected.Each link 40 can with the setting of the epipleurite 11 and/or the hypopleurite 12 of the outside face that constitutes air bag 5A with fusing, or can with epipleurite 11 and hypopleurite 12 split settings.In this case, each link 40 can be made portion 13 etc. by the periphery that sheet 11,12 is stitched together and sew up, or by not sewing up with the above-mentioned shared portion of making of portion of making.
The shape of each link 40 is not limited thereto, can be to connect car post covering part 5b and the preceding lifting rope shape parts that enclose between the covering part 5a, perhaps also can be that its two ends are respectively with each car post covering part 5b with before enclose tubular part or the pouch shape parts that covering part 5a is communicated with.
Other structures of pedestrian airbag apparatus 4A are identical with the pedestrian airbag apparatus 4 shown in above-mentioned Fig. 1 to 10, and in Figure 12, and represent with identical reference number in the element components identical shown in Fig. 1 to 10.And the action of the pedestrian airbag apparatus 4A also pedestrian airbag apparatus 4 with Fig. 1 to 10 is identical.
Among this pedestrian airbag apparatus 4A, the left and right sides both end sides of enclosing covering part 5a among the air bag 5A, when expanding before launching in the mode of expanding to the left and right from shell 8 is connected with shell 8 by the first tether 30A respectively, and with this before enclose covering part 5a each car post covering part 5b of left and right sides both end sides bonded assembly also be connected with shell 8 respectively by the second tether 30B.Therefore, when air bag 5A expands, enclose the left and right sides both end sides of covering part 5a and the shake of each car post covering part 5b before can suppressing.
In this embodiment, each second tether 30B is connected in the outside face of each car post covering part 5b, on the position of most peripheral near inboard (bearing of trend of this car post covering part 5b and the medial side of Width) than this car post covering part 5b.Therefore, when air bag 5A expands expansion, the most peripheral of each car post covering part 5b (promptly, the side end face of each car post covering part 5b under the swelling state) is difficult for being stretched to the air bag lower face side, thereby is difficult on the most peripheral of this car post covering part 5b, producing the moment that this most peripheral is involved in the air bag lower face side by the pulling force of the second tether 30B.Thus, distortion such as also suppressed warpage, middle folding to occur on the above-mentioned car post covering part, reverse.
In addition, in this embodiment, owing to be provided with on the bight and be used for they are carried out bonded assembly link 40 with before enclosing intersecting of covering part 5a at each car post covering part 5b, so when air bag 5A expands, further suppressed the shake of each car post covering part 5b.
In the above-described embodiment, each car post covering part 5b is connected with shell 8 by one second tether 30B respectively, but also can be connected with shell 8 by two above tethers.
In the above-mentioned embodiment, except the both end sides of preceding enclosing covering part 5a, each car post covering part 5b also is connected with shell 8 by tether, but also can other positions beyond the above-mentioned position be connected on the shell 8 by tether.
In the above-mentioned embodiment, though be provided with each car post covering part 5b and the shell 8 bonded assemblys second tether 30B, and be provided with and be used for they are carried out bonded assembly link 40 with the bight that intersects of before enclosing covering part 5a at each car post covering part 5b, but in the present invention, in the above-mentioned parts any can only be set on car post covering part also.Figure 13 is the planar view of pedestrian airbag apparatus under its airbag inflation state, wherein only is provided with link 40 on car post covering part; Figure 14 is the planar view of pedestrian airbag apparatus under its airbag inflation state, wherein only is provided with the second tether 30B on car post covering part.
Specifically, the structure of the air bag 5B of the pedestrian airbag apparatus 4B of Figure 13 is that the air bag 5A from above-mentioned Figure 12 has omitted with car post covering part 5b and the shell 8 bonded assemblys second tether 30B (that is, only be provided with on the car post covering part 5b be used for car post covering part 5b and the structure of before enclosing covering part 5a bonded assembly link 40).In this embodiment, as tether, only be provided with will preceding enclose covering part 5a left and right sides both end sides respectively with shell 8 bonded assembly tethers 30 (being equivalent to the first tether 30A in the embodiment of Figure 12).
On the contrary, the structure of the air bag 5C of the pedestrian airbag apparatus 4C of Figure 14 be the air bag 5A from above-mentioned Figure 12 omitted be used for car post covering part 5b with before enclose covering part 5a bonded assembly link 40 (that is, on car post covering part 5b, only be provided with car post covering part 5b and the shell 8 bonded assemblys second tether 30B structure).
Other structures of the embodiment of Figure 13 and Figure 14 are identical with the embodiment of Figure 12, and represent and the element components identical shown in Figure 12 with identical label in Figure 13 and Figure 14.
With the same each car post covering part 5b of embodiment of Figure 13 and Figure 14 on only be provided with under the situation of the link 40 or the second tether 30B, when air bag 5B, 5C expand, can suppress the shake of each car post covering part 5b equally.
The application is based on Japanese patent application (Japanese Patent Application 2006-8862) that proposed on January 17th, 2006 and the Japanese patent application (Japanese Patent Application 2006-77016) that proposed on March 20th, 2006, and quotes its full text.
Claims (9)
1. pedestrian airbag apparatus, it comprises along the air bag of car body outside face expansion expansion, the charging blower that holds the shell of described air bag and be used to make described airbag inflation, described air bag when expanding with from the mode of described shell expansion around this shell along described car body outwardly deploying, the part of expanding around described shell in the described air bag, under swelling state is connected with described shell by tether, it is characterized in that
One end of described tether is connected with following position in the described air bag, under the state of described airbag inflation, described position than described air bag with the relative opposed area of described shell near from the front of the predetermined extended direction of described shell extension and than the portion foremost of described predetermined extended direction base end side near this predetermined extended direction;
The other end of described tether is connected with described shell.
2. pedestrian airbag apparatus as claimed in claim 1 is characterized in that,
In the described air bag, at least at following binding site place by the portion made from the car body outside face side of described air bag and a side combination opposite with this car body outside face side, wherein, under the state of described airbag inflation, described binding site than described air bag with the relative opposed area of described shell near from the front of the predetermined extended direction of described shell extension and than the portion foremost of described predetermined extended direction base end side near this predetermined extended direction;
A described end of described tether is by combining with the car body outside face side of described air bag with described this shared portion of making of portion of making.
3. pedestrian airbag apparatus as claimed in claim 2 is characterized in that,
A described end of described tether combines with the car body outside face side of described air bag by the described portion of making of annular arrangement.
4. pedestrian airbag apparatus as claimed in claim 1 is characterized in that, described air bag comprises:
Along the trailing edge of the car bonnet of described car body on the width over sides of car body direction, launch before enclose covering part; And
Along the car post covering part that the A car post of described car body roughly launches on above-below direction, its lower end with described before enclose covering part and be connected;
Before described, enclose and be provided for being connected the link that encloses covering part and described car post covering part before described on the intersection bight of covering part and described car post covering part.
5. pedestrian airbag apparatus as claimed in claim 1 is characterized in that, described air bag comprises:
Along the trailing edge of the car bonnet of described car body on the width over sides of car body direction, launch before enclose covering part; And
Along the car post covering part that the A car post of car body roughly launches on above-below direction, its lower end with described before enclose covering part and be connected;
Be provided with first tether and second tether as described tether;
One end of described first tether is connected in the following connection location that encloses before described in the covering part, before described, enclose under the state that covering part expands, described connection location than enclose before described covering part with the relative opposed area of described shell near from the front of the predetermined extended direction of described shell extension and than the portion foremost of described predetermined extended direction base end side near described predetermined extended direction;
The other end of described tether is connected with described shell;
Middle part on the above-below direction of the upper end of described second tether and described car post covering part is connected;
The lower end of described second tether is connected with described shell.
6. pedestrian airbag apparatus as claimed in claim 5 is characterized in that,
Before described, enclose and be provided for being connected the link that encloses covering part and described car post covering part before described on the intersection bight of covering part and described car post covering part.
7. pedestrian airbag apparatus as claimed in claim 4 is characterized in that,
Enclose covering part before described and have the width that extends to the right side from the left side of car body.
8. pedestrian airbag apparatus as claimed in claim 5 is characterized in that,
Enclose covering part before described and have the width that extends to the right side from the left side of car body.
9. pedestrian airbag apparatus as claimed in claim 1 is characterized in that,
Described shell has left and right sides end wall;
The end of described tether is connected with described end wall.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006008862 | 2006-01-17 | ||
| JP008862/2006 | 2006-01-17 | ||
| JP077016/2006 | 2006-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101374699A true CN101374699A (en) | 2009-02-25 |
Family
ID=40448274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800032176A Pending CN101374699A (en) | 2006-01-17 | 2007-01-09 | Pedestrian airbag apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101374699A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416920A (en) * | 2011-10-19 | 2012-04-18 | 湖南大学 | Pedestrian head injury protection system based on H-shaped safety air bag |
| CN103129509A (en) * | 2011-11-29 | 2013-06-05 | 沃尔沃汽车公司 | Pedestrian protection airbag |
| CN103338982A (en) * | 2011-01-27 | 2013-10-02 | 高田股份公司 | Airbag arrangement for a motor vehicle |
| CN105473390A (en) * | 2013-08-28 | 2016-04-06 | 奥托立夫开发公司 | A method of packaging an air-bag |
| CN107000673A (en) * | 2014-12-22 | 2017-08-01 | 高田株式会社 | Pedestrian airbag apparatus and automobile |
-
2007
- 2007-01-09 CN CNA2007800032176A patent/CN101374699A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103338982A (en) * | 2011-01-27 | 2013-10-02 | 高田股份公司 | Airbag arrangement for a motor vehicle |
| US9073513B2 (en) | 2011-01-27 | 2015-07-07 | Takata AG | Gas bag arrangements for a motor vehicle |
| CN103338982B (en) * | 2011-01-27 | 2016-09-07 | 高田股份公司 | Airbag apparatus for motor vehicles |
| US9994191B2 (en) | 2011-01-27 | 2018-06-12 | Takata AG | Gas bag arrangement for a motor vehicle |
| CN102416920A (en) * | 2011-10-19 | 2012-04-18 | 湖南大学 | Pedestrian head injury protection system based on H-shaped safety air bag |
| CN103129509A (en) * | 2011-11-29 | 2013-06-05 | 沃尔沃汽车公司 | Pedestrian protection airbag |
| CN103129509B (en) * | 2011-11-29 | 2016-08-17 | 沃尔沃汽车公司 | Pedestrian protection airbag |
| CN105473390A (en) * | 2013-08-28 | 2016-04-06 | 奥托立夫开发公司 | A method of packaging an air-bag |
| US9809190B2 (en) | 2013-08-28 | 2017-11-07 | Autoliv Development Ab | Method of packaging an air-bag |
| CN107000673A (en) * | 2014-12-22 | 2017-08-01 | 高田株式会社 | Pedestrian airbag apparatus and automobile |
| CN107000673B (en) * | 2014-12-22 | 2019-10-22 | 均胜安全系统日本株式会社 | Pedestrian airbag apparatus and automobile |
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Open date: 20090225 |