JP3812228B2 - Vehicle occupant protection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to an occupant protection device such as an airbag for protecting an occupant when an impact is applied to the vehicle, and more particularly, to protect the occupant's head and prevent the occupant from jumping out of the vehicle. It belongs to the technical field of curtain airbags deployed along side windows.
[0002]
[Prior art]
  Conventionally, as an occupant protection device for this type of vehicle, as disclosed in, for example, Japanese Patent Laid-Open No. 10-166888, an airbag that is long in the front-rear direction is folded from the front pillar of the vehicle to the roof side frame. It is known that the airbag is stored and deployed in a curtain shape downward along the side window when an impact acts on the side of the vehicle.
[0003]
  In the above, the front end portion of the airbag is connected to the lower side of the front pillar of the vehicle, while the rear end portion is connected to the upper side of the quarter pillar, and the airbag extends from the front end portion to the rear end portion. The airbag is divided into a plurality of sachets (inflatable portions) extending substantially in the vertical direction. The sachets are expanded in a cylindrical shape when the airbag is deployed, so that the airbag is deployed in a curtain shape as a whole. . And since the plurality of sachets are inflated in this way, the length of the entire airbag is reduced in the front-rear direction, so that the tension acts naturally in the front-rear direction to restrain the occupant's head and the like. It has become.
[0004]
  Furthermore, in the above-mentioned conventional one, the diameter of the plurality of pouches located on the rear side of the center pillar of the vehicle is particularly large, which makes it possible to, for example, the head of an occupant who is going outside the passenger compartment. When the portion is restrained by the airbag, the large-diameter sachet is caught by the center pillar to restrict the displacement of the airbag, so that the occupant restraint can be further enhanced.
[0005]
[Problems to be solved by the invention]
  However, the conventional curtain airbag is sewn to divide the airbag into a plurality of sachets, and sufficient cushioning performance cannot be obtained in the vicinity of the seam, so the overall protection performance of the passenger is reduced. There is a problem of doing. In addition, since the strength of the airbag decreases as the number of seams increases, there is a possibility that the airbag may be broken during deployment and the occupant cannot be protected.
[0006]
  Moreover, in addition to the operation of sewing the airbag, measures such as applying a sealing agent to suppress gas leakage from the seam are required, and these operations require a lot of labor and time. Therefore, the increase in manufacturing cost is remarkable.
[0007]
  The present invention has been made in view of such various points, and an object of the present invention is to deploy the airbag in a curtain airbag that is deployed so as to cover the inside of the side window when an impact is applied to the vehicle. At times, the structure for stretching in the front-rear direction is devised, and while securing the occupant's restraint, the seam of the airbag is reduced to improve the protection performance and reduce the cost.
[0008]
[Means for Solving the Problems]
  In order to achieve the above object, according to the solution of the present invention, the front and rear of the lower portion of the airbagAt least oneedgeThe carA connection member connected to the body was provided, and a slack absorbing mechanism for absorbing slack of the connection member as the airbag was deployed was attached to at least one of the connection members.
[0009]
  Specifically, according to the first aspect of the present invention, front and rear pillars are disposed in front and rear of a side window of a vehicle, respectively, and roof side rails extending in the front-rear direction so as to connect the upper ends of both pillars are provided. Within the range from the front pillar through the roof side rail to the rear pillar.Folded and storedAirbag,in frontThe vehicle occupant protection device is assumed to be deployed so as to cover the inside of the side window. And the upper edge of the airbagTheAt least fixed to the roof side railYouOn the other hand, the front end of the lower part of the airbag is connected to the vehicle body in front of the side window.ReamKnotMaterialProvided,thisConnecting partMaterialA slack absorbing mechanism that absorbs slack of the connecting member as the airbag is deployed is attached.
[0010]
  With the above-described configuration, the airbag stored in the roof side rail of the vehicle mainly expands downward so as to cover the inside of the side window when an impact is applied to the side portion of the vehicle. At this time, the folded airbag moves from the upper side to the lower side as a whole, and along with this, the slack of the connecting member fixed to the lower part of the airbag is absorbed by the slack absorbing mechanism., DBy pulling the airbag back and forth, sufficient tension can be applied. This eliminates the need to divide the airbag into a plurality of sachets as in the past, so that the seam of the portion in contact with the occupant can be reduced to improve the protection performance, and the seam of the airbag as a whole is reduced. Thus, cost reduction can be achieved.
[0011]
  Further, the slack absorbing mechanism is provided at the front end of the airbag, and is provided at an inflating portion that is inflated when the airbag is deployed, and at a rear side of the inflating portion of the airbag, and penetrates the airbag left and right. An end portion on the airbag side of the connecting member extending so as to be wound from one of the left and right sides in front of the inflatable portion in the deployed state of the airbag. It is fixed so that it wraps around the inflatable part on the opposite side after being turned forward on the opposite side through.
[0012]
  As a result, when the inflated portion of the end portion of the airbag is inflated when the airbag is deployed, the end portion of the connecting member is largely wound by the inflating portion. Absorbing can apply sufficient tension to the airbag. Further, since the tensile force from the connecting member to the airbag acts in a distributed manner around the inflating portion, it is possible to avoid load concentration and prevent the airbag from being damaged.
[0013]
  In invention of Claim 2,In the occupant protection device having the same premise configuration as that of the first aspect of the present invention, a slack absorbing mechanism similar to the above is attached to a connecting member that connects the rear end of the lower part of the airbag to the rear vehicle body. The effect similar to that of the invention of claim 1 is obtained.
[0014]
  According to a third aspect of the present invention, the front and rear connecting members are provided so as to connect the front and rear end portions of the lower portion of the airbag to the front and rear bodies of the side windows, respectively, and the front and rear ends of the airbag. Both of them are provided with an inflating portion that inflates when deployed. And of the front side and the rear side connecting member, the one where the slack absorbing mechanism is not provided.The end of the connecting member on the airbag side is fixed to a portion of the inflatable portion that expands at least in the left-right direction. As a result, when the inflating portion provided at the end of the airbag is inflated, the end of the connecting member fixed to the inflating portion is displaced at least in the left-right direction. The length of the lip becomes shorter and the slack is absorbed.
[0015]
  In the invention of claim 4,Front and rear connecting members are provided so as to connect the front and rear end portions of the lower part of the airbag to the front and rear vehicle bodies from the side windows, respectively, and a slack absorbing mechanism is provided among the front and rear connecting members. Who is notBetween the connecting member and the car bodyAnd another slack absorbing mechanism that absorbs slack of the connecting member as the airbag is deployed.Shall be provided. This wayAnotherSince there is no need to process the airbag to provide a slack absorbing mechanism, the processing does not increase the seam of the airbag or complicate the structure of the airbag. Can prevent declines and cost increases.
[0016]
  Claim5In this invention, the end of the connecting member on the airbag side is sewn to the airbag at the seam of the airbag or in the vicinity of the seam. By so doing, the cushioning performance of the airbag is originally low in the vicinity of the seam. Therefore, even if the end portion of the connecting member is sewn in the vicinity of the airbag, the cushioning performance of the airbag does not deteriorate. Furthermore, if the connecting members are sewn together at the seam of the airbag, it is possible to avoid a reduction in the strength of the airbag due to sewing.
[0017]
  Claim6In the invention of, CommunicatingWhen the airbag is stored, the binding member is stored between the pillar and the interior member of the pillar. By carrying out like this, a connection member is concealed by an interior member, and merchantability improves.
[0018]
  Claim7In this invention, the vehicle has a plurality of seats in the front-rear direction, and is disposed from the front pillar disposed in front of the front seat and from the substantially lateral side to the rear of the rear seat positioned behind the front seat. The front pillar is the front pillar, the rear pillar is the quarter pillar, and the airbag covers the side window disposed between the front pillar and the quarter pillar. Shall be deployed. As a result, the airbag becomes extremely long in the front side direction of the vehicle, and the restraining property in the left-right direction naturally decreases, so that the slack of the connecting member is absorbed and the tension in the front-rear direction is applied to the airbag. It is extremely effective in enhancing the restraint of the passenger.
[0019]
  In the invention according to claim 8, the inflating part and the hole part of the airbag are provided so as to be located inside the side window in the deployed state of the airbag.
[0020]
  Further, the invention of claim 9 is the occupant protection device having the same precondition as the inventions of claims 1 and 2, wherein the upper end edge of the airbag is fixed to at least the roof side rail, while the lower portion of the airbag A front connection member that connects the front end of the airbag to the vehicle body ahead of the side window, and a rear connection member that connects the rear end of the lower portion of the airbag to the vehicle body behind the side window, At least one of the rear connecting members is disposed such that the end portion on the airbag side is positioned higher than the end portion on the vehicle body side when the airbag is stored, and at least one of the connecting members is attached to the at least one connecting member. Install a slack absorbing mechanism that absorbs the slack as it expands. And the slack absorbing mechanism is provided between the at least one connecting member and the vehicle body, and when the end of the connecting member on the airbag side moves downward as the airbag is deployed, the connecting member It is assumed that a guide member is provided for guiding the guide so as to be bent.
[0021]
  That is, the airbag-side end of the at least one connecting member is located above the vehicle-body-side end when the airbag is stored, and moves downward as the airbag is deployed. In the unfolded state, the distance between the both end portions of the connecting member is shorter than in the retracted state, resulting in slack. On the other hand, in the present invention, when the airbag-side end portion of the connecting member moves downward as the airbag is deployed, the connecting member is bent by being guided by the guide member. Can absorb the slack.
[0022]
  According to the tenth aspect of the present invention, the guide member according to the ninth aspect of the present invention is provided with a bank portion that presses the connecting member toward the inside of the vehicle interior when the airbag is deployed. Thus, in a state where the airbag is deployed, the connecting member is pressed and bent by the bank portion in the middle thereof, thereby absorbing the slack of the connecting member. Moreover, since the whole airbag is urged | biased toward the vehicle interior via a connection member, a passenger | crew's restraint property can be improved further.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0024]
  (Embodiment 1)
  FIG. 1 shows a curtain airbag device (occupant protection device) A according to Embodiment 1 of the present invention. The curtain airbag device A is disposed on the right side body of the three-box type passenger vehicle 1 and is deployed as shown in the figure when an impact of a predetermined magnitude or larger is applied to the right side surface of the vehicle 1. Is to protect. Although not shown, this curtain airbag device A is also disposed on the left side body of the vehicle.
[0025]
  A front pillar 2, a center pillar 3, and a quarter pillar 4 that are connected to a bonnet (not shown) are arranged in order from the front side (left side in the figure) on the right side body of the vehicle 1. A roof side rail 5 extending in the front-rear direction is installed so as to connect the upper ends of 3 and the quarter pillar 4. A front door 6 and a front side window 7 are disposed between the front pillar 2 and the center pillar 3, and a rear door 8 and a rear side window 9 are disposed between the center pillar 3 and the quarter pillar 4, respectively. .
[0026]
  As shown in FIG. 2, the airbag 10 is folded and stored in a range extending from the front end portion of the roof side rail 5 to the quarter pillar 4. The airbag 10 is formed by sewing two sheets together at the peripheral portion into a large bag shape. When viewed from the side in the deployed state shown in FIG. 1, the airbag 10 is long in the front-rear direction and has a front end edge portion. While the shape extends substantially straight in the vertical direction, the rear end edge portion is an inclined portion that extends to the rear side as it goes downward. And the opening part is provided in the lower end part of this inclination part, and resin-made hoses 11 are inserted in this opening part in the airtight state. The hose 11 is connected to a cylindrical tubular inflator 12 containing an ignition part and an explosive, and is disposed inside the airbag 10 so as to extend to the front end along the upper edge. Further, a plurality of gas supply holes are provided in the middle of the hose 11 so that the high-pressure gas from the inflator 12 is uniformly supplied into the airbag 10 from the supply holes of the hose 11. .
[0027]
  In addition, six attachment fittings 13, 13,... Are disposed on the upper edge portion of the airbag 10 at a substantially constant interval from the front end portion to the rear end portion. As shown in detail in FIG. 3, each of the mounting brackets 13 is formed, for example, by bending a steel plate so as to sandwich the upper end edge of the airbag 10 and the hose 11, and the inner panel 5 a of the roof side rail 5 by the bolt 14. It is concluded to. That is, the airbag 10 has an upper end edge fixed to the roof side rail 5 by the mounting brackets 13, 13,..., And folded between the roof side rail 5 and the roof trim 16. It is stored. In the figure, reference numeral 17 denotes a seaming welt that covers the joint flanges of the roof inner panel 5a and the roof outer panel 5b. The seaming welt 17 is engaged with the edge of the roof trim 16. A protrusion 17a to be held is provided.
[0028]
  When an impact acts on the right side surface of the vehicle 1 and an ignition signal is input to the inflator 12 from a sensor (not shown), the airbag inflated by the high-pressure gas supplied from the inflator 12 is shown in FIGS. As also shown, the roof trim 16 is pushed open and deployed downward to restrain and protect the passenger's head of the vehicle 1 and to prevent the passenger from jumping out of the vehicle. As shown in FIGS. 1 and 5, a non-inflatable region 10 a sewed together so as not to inflate the left and right seats of the airbag 10 is provided slightly behind the central portion of the airbag 10. Yes. As described above, by providing the non-inflatable region in the portion that does not contact the occupant, the volume of the airbag 10 can be suppressed, the time required for deployment can be shortened, and the entire apparatus can be downsized.
[0029]
  In general, when the airbag 10 that is long in the front and rear direction greatly expands in the left-right direction when deployed, the airbag 10 may be deployed toward the occupant and contact the occupant. By providing the non-inflatable region 10a as described above, it is possible to appropriately suppress the inflation of the airbag 10 in the left-right direction and to avoid such an adverse effect.
[0030]
  On the other hand, tethers 18 and 19 (front and rear connecting members) for pulling the airbag 10 in the deployed state in the front-rear direction are disposed at the front and rear end portions on the lower side of the airbag 10, respectively. That is, one end portion of the front tether 18 is attached to the front end portion of the airbag 10, and the other end portion of the front tether 18 is fixed to the lower end side of the front pillar 2. Specifically, as shown in FIG. 6, the pillar side end of the front tether 18 is fixed to the buckle 20, and the buckle 20 is attached to the collar 21 so as to be rotatable around the bolt 22, and The bolt 22 is fixed to the inner surface of the inner panel 2a of the front pillar 2. Thus, the front tether 18 is arranged along the front pillar 2 as shown in FIG. 2 in the retracted state of the airbag 10, while the end on the airbag 10 side is lowered downward as the airbag 10 is deployed. By moving, it rotates around the bolt 22 and extends in the forward direction as shown in FIGS.
[0031]
  One mounting bracket 13 is disposed in the middle of the inclined portion at the rear end of the airbag 10, and the front tether is disposed near the lower end of the inclined portion, that is, the opening where the hose 11 is inserted. One end of the rear tether 19 shorter than 18 is sewn. The other end portion of the rear tether 19 is fixed to the lower end side of the quarter pillar 4 via the buckle 20 in the same manner as the front tether 18. In the retracted state of the airbag 10 shown in FIG. 2, the front tether 18 is housed inside the pillar trim 23 as shown in FIG. 7, and similarly, the mounting bracket 13 and the rear tether 19 at the rear end of the airbag 10. Is also housed inside the pillar trim, which improves the appearance and improves the merchantability.
[0032]
  In FIG. 7, reference numeral 2 b denotes a pillar outer panel that constitutes the closed pillar-shaped front pillar 2 together with the pillar inner panel 2 a, and a front window 25 is supported on the pillar outer panel 2 b via a seal member 24. Reference numeral 26 denotes a seaming welt that covers the joint flange portion of the pillar inner panel 2a and the pillar outer panel 2b. The seaming welt 26 has a protrusion that engages and holds the edge of the pillar trim 23. 26a is provided.
[0033]
  By the way, although the airbag 10 of this embodiment is long as mentioned above, it is not divided into a plurality of small bags as in the conventional curtain airbag, but as one large bag-like one as a whole. Yes. Therefore, when the storage state shown in FIG. 2 is shifted to the deployed state shown in FIG. 1, the length of the airbag 10 itself in the front-rear direction is not so short, but rather, the front tether 18 is slackened. If the tension in the front-rear direction of 10 becomes insufficient and the vehicle body receives an impact or subsequently rolls over, there is a possibility that the occupant will displace the airbag 10 outward from the vehicle and jump out of the vehicle from the side window. there were.
[0034]
  Therefore, in this embodiment, although it is a characteristic part of the present invention, the connection structure between the front tether 18 and the front end of the airbag 10 is devised, and the slack of the front tether 18 is absorbed as the airbag 10 is deployed. Thus, sufficient tension is applied to the airbag 10. With this configuration, even when the vehicle body receives an impact as described above or rolls over after that, the airbag 10 in which sufficient tension acts in the front-rear direction causes the occupant to enter the passenger compartment. Can be protected to stay,CrewThe protection performance can be improved.
[0035]
  Specifically, as shown in FIGS. 1 and 8, a hole 10 b that penetrates the airbag 10 left and right is provided on the front end side of the airbag 10. The end portion of the front tether 18 on the airbag 10 side extends so as to wind from the front right side of the inflatable portion 10c on the front side of the hole portion 10b, and passes through the hole portion 10b on the opposite left side. And then wound around the left inflatable portion 10c and stitched together at the seam 10d of the airbag 10. In other words, the front end portion of the airbag 10 is provided with an inflatable portion 10c that expands when the airbag 10 is deployed, and the through-hole portion 10b is provided behind the inflatable portion 10c (a portion closer to the center of the airbag 10). The end of the front tether 18 on the side of the airbag 10 is fixed to the front end edge of the airbag 10 after about one turn around the inflating portion 10c.
[0036]
  With such a configuration, when the stored airbag 10 is deployed, the inflated portion 10c at the front end thereof is inflated, and as shown in FIG. 8, the end of the front tether 18 is largely wound around the inflatable portion 10c. Once taken, the slack will be absorbed. As a result, even if the front tether 18 has a large slack, it can be absorbed without deficiency, and a sufficient tension can be applied to the airbag 10. Further, the load from the front tether 18 is dispersed around the inflating portion 10c, and the reliability of the airbag 10 is improved. The hole 10b and the inflating portion 10c of the airbag and the attachment structure of the front tether 18 to the airbag 10b correspond to the slack absorbing mechanism S that absorbs the slack of the tether 18 as the airbag 10 is deployed.
[0037]
  Therefore, according to the occupant protection device A for a vehicle according to this embodiment, for example, when another vehicle collides with the right side surface of the vehicle 1 and an impact greater than or equal to a predetermined level acts, it responds to an input from the sensor. The ignition part of the inflator 12 ignites, the explosive burns at high speed, and a large amount of gas generated at that time is supplied to the airbag 10 by the hose 11. The airbag 10 is rapidly inflated and deployed downward from the roof side rail 5 and covers the inside of the front and rear side windows 7 and 9 so that the occupant can be protected.
[0038]
  At this time, the inflatable portion 10c at the front end of the airbag 10 expands in a substantially cylindrical shape by supplying high-pressure gas, and the end of the front tether 18 is largely wound, so that the slack of the tether 18 is absorbed. 10 has a sufficient longitudinal tension. Thereby, even if the airbag 10 is not divided into a plurality of small bags as in the conventional curtain airbag, the restraint of the occupant can be ensured.
[0039]
  And since the airbag 10 is not divided | segmented, the seam of the part which contacts a passenger | crew can be eliminated, and, thereby, the protection performance of the airbag 10 can be improved as a whole. Further, since the airbag 10 is not sewn to divide it, and it is not necessary to seal the sewn portion, labor and time required for these operations can be saved, and the manufacturing cost can be greatly reduced. it can.
[0040]
  The airbag 10 in this embodiment is deployed so as to cover both the front and rear side windows 7 and 9 including not only the front seat but also the rear seat of the vehicle. The direction is less constrained. Therefore, the effect of the present invention that the slackness of the tether 18 can be absorbed with a simple configuration as described above, and the longitudinal tension can be sufficiently applied to the airbag 10 that is extremely long in the front-rear direction is very effective. Become a thing.
[0041]
  Furthermore, in this embodiment, since the end edge portion of the front tether 18 is sewn together by the seam 10d of the airbag 10, the number of sewing points does not increase and the strength of the airbag does not decrease.
[0042]
  In the above-described embodiment, the end portion of the front tether 18 on the airbag 10 side is wound around the inflatable portion 10c, and then the end edge portion is sewn together with the seam of the airbag 10. It is not limited. That is, the edge of the front tether 18 does not necessarily have to be sewn near the seam of the airbag 10..
[0043]
  (Embodiment 2)
  FIGS. 9-11 shows embodiment which applied the curtain airbag apparatus A of this invention to the wagon type vehicle 30. FIG. In the curtain airbag device A according to the second embodiment, the schematic configuration of the airbag 10 and the mounting structure of the front tether 18 are the same as those of the first embodiment. The description thereof is omitted. The curtain airbag device A according to the second embodiment is characterized in that the airbag 10 is deployed between the rear tether 19 attached to the rear end of the airbag 10 and the rear pillar 31 of the vehicle 1. A slack absorbing mechanism S ′ for absorbing the slack of the rear tether 19 is provided.
[0044]
  Specifically, as shown in FIG. 10, in the retracted state of the airbag 10, the airbag 10 is folded and stored between the roof side rail 5 and the roof trim 16 in the same manner as in the first embodiment. Similarly, the rear tether 19 is housed between the rear pillar 31 and the pillar trim 32. Further, in this state, the end of the rear tether 19 on the airbag 10 side is positioned above the end of the rear pillar 31 side.
[0045]
  The pillar trim 32 includes a front frame member 33 and a rear panel member 34. That is, although not shown in detail, the frame member 33 is fixed to the inner panel of the rear pillar 31 with bolts, and gently protrudes from the upper side to the lower side toward the vehicle interior, and protrudes toward the vehicle interior toward the lower end side thereof. In addition to having the bank portion 33a to be operated, the airbag portion 10 has high rigidity enough to counter the deployment force of the airbag 10. The panel member 34 is held along the inner side of the rear pillar 31 by engaging the front end portion thereof with the rear end edge portion of the frame member 33.
[0046]
  When high pressure gas is supplied from the inflator 12 and the airbag 10 is deployed as shown in FIG. 11, the airbag 10 pushes and opens the roof trim 16 as shown by the phantom line in FIG. When inflated indoors, the rear tether 19 attached to the lower portion of the airbag 10 also pushes and opens the panel member 34 of the pillar trim 32 and moves downward. At this time, the rear tether 19 always moves downward along the frame member 33. Therefore, the rear tether 19 is pressed toward the vehicle interior as the airbag 10 is deployed, and the solid line in FIG. As shown, when the airbag 10 is fully deployed, it is pressed toward the vehicle interior by the bank portion 33a of the frame member 33 and is bent into a substantially L shape.
[0047]
  Therefore, in this embodiment, the rear tether 19 is projected toward the vehicle interior along the frame member 33 by utilizing the force that the airbag 10 is inflated and deployed downward, so that the rear tether 19 is loosened. Can be absorbed and given sufficient tension. Thereby, the same effect as the said Embodiment 1 is obtained, and while protecting the passenger | crew's restraint property by the airbag 10, the protection performance of this airbag 10 can be improved and cost reduction can be aimed at. Further, by urging the airbag 10 toward the vehicle interior via the rear tether 19, the passenger's protection performance by the airbag can be further enhanced.
[0048]
  The frame member 33 corresponds to a guide member that guides the rear tether 19 when the airbag 10 is deployed. The frame member 33, the bank portion 33a on the lower end side thereof, and the like The slack absorbing mechanism S ′ is constituted by the arrangement of the rear tether 19. According to the slack absorbing mechanism S ′, there is no need to provide the hole 10b or the like in the airbag 10 unlike the slack absorbing mechanism S provided at the front end of the airbag 10. Therefore, the seam of the airbag is not necessary. Can be avoided, and the structure of the airbag can be complicated.
[0049]
  The present invention is not limited to the above-described embodiments, but includes other various embodiments. That is, in the first embodiment, the slack absorbing mechanism S for absorbing the slack of the tether is provided on the front side of the airbag 10, and in the second embodiment, a slack absorbing mechanism S ′ different from that is provided on the rear side of the airbag 10. However, the present invention is not limited to this, and any slack absorbing mechanism S, S ′ can be applied to both the front side and the rear side of the airbag.
[0050]
【The invention's effect】
  As explained above, claim 1And claim 2According to the vehicle occupant protection device of the invention, in the curtain airbag device in which the airbag is deployed so as to cover the inside of the lower side window from the roof side rail when an impact acts on the side portion of the vehicle. Lower part of the airbagThe carConnect to the bodyReamWhile arranging the tie member, DBy attaching a slack absorbing mechanism that absorbs slack in the connecting member as the airbag develops, DBy pulling the airbag in the front-rear direction, sufficient tension can be applied, which eliminates the need to divide the airbag into multiple sachets, reducing the seam of the airbag, improving protection performance and reducing costs Can be achieved.
[0051]
  In addition, since the inflated portion of the end portion of the airbag is inflated and the end portion of the connecting member is wound up by the inflating portion, even if the connecting member is largely loosened, it is absorbed without deficiency, and the airbag Sufficient tension can be applied. Also, the reliability of the airbag can be improved by dispersing the load from the connecting member to the airbag.
[0052]
  Claim3According to the invention, the inflating portion of the end portion of the airbag is inflated, and the end portion of the connecting member fixed to the inflating portion is displaced at least in the left-right direction, thereby absorbing the slack of the connecting member, Sufficient tension can be applied to the airbag.
[0053]
  According to the invention of claim 4, Another slack absorption mechanismBy providing it between the connecting member and the car body,ItAirbagSet inIt is possible to reliably prevent deterioration of the protection performance when.
[0054]
  Claim5According to the invention, by sewing the end of the connecting member on the airbag side in the vicinity of the seam of the airbag, it is possible to avoid a decrease in cushioning performance, and further, if the sewing is performed together at the seam of the airbag, A reduction in strength can also be avoided.
[0055]
  Claim6According to the invention, the connecting member can be concealed by the interior member, and the merchantability can be improved.
[0056]
  Claim7According to the invention, in the airbag that is extremely long in the front and rear direction so that the front and rear passengers of the vehicle can be protected together, it is extremely possible to absorb the slack of the connecting member and to apply the longitudinal tension to the airbag. validate.
[0057]
  According to the invention of claim 9, when the airbag side end portion of the connecting member moves downward with the deployment of the airbag, the connecting member is guided to be bent to absorb slack, Sufficient tension can be applied to the airbag.
[0058]
  According to the invention of claim 10, the connecting member can be pressed toward the vehicle interior by the bank portion with the airbag deployed, and the entire airbag can be folded via the connecting member. By energizing the passenger compartment, the restraint of the occupant can be further enhanced.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a deployed state of a curtain airbag device according to Embodiment 1 of the present invention.
FIG. 2 is a view corresponding to FIG. 1 and showing a stored state of the airbag.
3 is a cross-sectional view taken along line III-III in FIG. 2, showing a structure for fixing an airbag to a roof side rail.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a cross-sectional view taken along the line VV in FIG.
FIG. 6 is a partially enlarged view showing a structure for attaching a front tether to a front pillar.
7 is a cross-sectional view taken along line VII-VII in FIG.
8 is a cross-sectional view taken along line VIII-VIII in FIG.
FIG. 9 is a view corresponding to FIG. 1 according to Embodiment 2 of the present invention.
FIG. 10 is a perspective view showing an arrangement configuration of a rear tether stored in a rear pillar of the vehicle in a state where the airbag is stored.
FIG. 11 is a view corresponding to FIG. 11 showing a state where the airbag is deployed.
[Explanation of symbols]
A curtain airbag device
S, S 'slack absorption mechanism
1 vehicle
2 Front pillar (front pillar)
4 Quarter pillar (rear pillar)
5 Roof side rail
7,9 Side window
10 Airbag
10b hole
10c Expansion part
18 Front tether (front connecting member)
19 Rear tether (rear connecting member)
30 vehicles
31 Rear pillar (rear pillar)
33 Frame member (guide member)
33a Bank

Claims (10)

Front and rear pillars are arranged in front and rear of the side window of the vehicle, respectively, and roof side rails extending in the front-rear direction so as to connect the upper ends of both pillars are provided,
An air bag stored in folded within leading to side pillar after through the roof side rail from the front pillar, the occupant protection apparatus for a vehicle so as to expand to cover the inside of the front SL side window,
While the upper end edge of the airbag is fixed to at least the roof side rail,
The consolidated member you connected to the vehicle body in the front is also provided through a side window the front end of the lower portion of the airbag,
The front Killen binding member has slack absorbing mechanism is mounted to absorb the slack of the connecting member with the deployment of the airbag,
The slack absorbing mechanism is
An inflatable portion provided at a front end of the airbag and inflated when the airbag is deployed;
Provided at a site on the rear side of the inflatable portion of the airbag, and having a hole portion penetrating the airbag left and right;
An end portion of the connecting member on the airbag side extends so as to wrap from the left or right side of the inflating portion in front of the inflated portion in the deployed state of the airbag, and passes through the hole portion toward the front side on the opposite side. A vehicle occupant protection device, wherein the vehicle occupant protection device is fixed so as to be wound around the inflatable portion on the opposite side . Front and rear pillars are arranged in front and rear of the side window of the vehicle, respectively, and roof side rails extending in the front-rear direction so as to connect the upper ends of both pillars are provided,
In the vehicle occupant protection device, in which the airbag folded and stored in the range from the front pillar through the roof side rail to the rear pillar is deployed so as to cover the inside of the side window,
While the upper end edge of the airbag is fixed to at least the roof side rail,
A connecting member that connects the rear end of the lower portion of the airbag to the vehicle body behind the side window is provided,
The connection member is attached with a slack absorbing mechanism that absorbs slack of the connection member as the airbag is deployed.
The slack absorbing mechanism is
An inflatable portion provided at a rear end of the airbag, and inflated when the airbag is deployed;
Provided in a portion on the front side of the inflatable portion of the airbag, and having a hole portion penetrating the airbag left and right;
An end portion of the connecting member on the airbag side extends so as to wrap around the inflatable portion from either the left or right side of the inflated portion when the airbag is deployed, and passes through the hole portion toward the rear on the opposite side. A vehicle occupant protection device, wherein the vehicle occupant protection device is fixed so as to be wound around the inflatable portion on the opposite side . In either claim 1 or 2 ,
Front and rear connecting members are provided so as to connect the front and rear ends of the lower part of the airbag to the front and rear vehicle bodies than the side windows, respectively.
Both the front end and the rear end of the airbag are provided with an inflating portion that inflates when the airbag is deployed,
Wherein one of the front and rear connecting members, characterized in that the end portion of the air bag-side coupling member which is not provided with the slack absorbing mechanism is fixed to a portion that is inflated at least in the lateral direction in the inflated portion A vehicle occupant protection device. In either claim 1 or 2 ,
Front and rear connecting members are provided so as to connect the front and rear ends of the lower part of the airbag to the front and rear vehicle bodies than the side windows, respectively.
Of the front and rear connecting members, another slack absorbing mechanism that absorbs the slack of the connecting member when the airbag is deployed between the connecting member that is not provided with the slack absorbing mechanism and the vehicle body. occupant protection device for a vehicle, characterized in that is provided. In either claim 1 or 2 ,
An occupant protection device for a vehicle , wherein an end portion of the connecting member on the airbag side is sewn to the airbag at or near the seam of the airbag . In either claim 1 or 2 ,
The occupant protection device for a vehicle, wherein the connecting member is housed between the pillar and an interior member of the pillar when the airbag is stored . In either claim 1 or 2 ,
The vehicle has a plurality of seats in the front-rear direction, a front pillar disposed in front of the front seat, and a quarter pillar disposed from substantially the side of the rear seat located behind the front seat to the rear. Prepared,
The front pillar is the front pillar,
The rear pillar is the quarter pillar,
The vehicle occupant protection device according to claim 1, wherein the airbag is deployed so as to cover a side window disposed between the front pillar and the quarter pillar . In either claim 1 or 2 ,
An occupant protection device for a vehicle, wherein an inflatable portion and a hole portion of the airbag are provided so as to be positioned inside the side window when the airbag is deployed . Front and rear pillars are arranged in front and rear of the side window of the vehicle, respectively, and roof side rails extending in the front-rear direction so as to connect the upper ends of both pillars are provided,
In the vehicle occupant protection device, in which the airbag folded and stored in the range from the front pillar through the roof side rail to the rear pillar is deployed so as to cover the inside of the side window,
While the upper end edge of the airbag is fixed to at least the roof side rail,
A front connecting member that connects the front end of the lower portion of the airbag to the vehicle body ahead of the side window;
A rear connecting member that connects a rear end of the lower portion of the airbag to a vehicle body behind the side window;
At least one of the front-side and rear-side connecting members is disposed so that an end portion on the airbag side is positioned higher than an end portion on the vehicle body side when the airbag is stored, and is slackened as the airbag is deployed. A slack absorbing mechanism that absorbs
The slack absorbing mechanism is provided between the at least one connecting member and the vehicle body, and when the end of the connecting member on the airbag side moves downward as the airbag is deployed, the connecting member An occupant protection device for a vehicle, comprising a guide member that guides the vehicle so as to be bent . In claim 9,
An occupant protection device for a vehicle, wherein the guide member is provided with a bank portion that presses the connecting member toward the inside of the vehicle interior when the airbag is deployed.

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