JP2009166680A - Airbag device for side impact - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an airbag device for side impact capable of enhancing the constraint performance by holding an airbag at a deployed and inflated position while constraining an occupant in a wide area. <P>SOLUTION: The airbag device for side impact feeds gas G for inflation from an inflator 26 to an airbag 27 fixed to a base end 27B during the side impact of a vehicle in which a plurality of rear seats 15 are juxtaposed in the vehicle width direction, and deploys and inflates the airbag 27 between the adjacent rear seats 15 in a bag shape to restrain an occupant. A retraction device 29 is provided forward of a fore end 27T in the deploying direction of the airbag 27, a front end 28F of a strap 28 formed of a non-extensible woven textile is connected to the retraction device 29, and a rear end 28R is connected to the fore end 27T. When the airbag 27 is deployed and inflated, the strap 28 is retracted by the retraction device 29 and tightened to give the tension to the airbag 27 and to regulate the displacement in the vehicle width direction, and the airbag 27 is held at the deployed and inflated position. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  In the present invention, when a vehicle having a plurality of seats arranged side by side in the vehicle width direction is subjected to an impact from the side due to a side collision, an inflation fluid such as an inflation gas is supplied from an inflation fluid generating source such as an inflator. The present invention relates to a side-impact airbag device that is supplied to a bag, and the airbag is deployed and inflated between adjacent seats to restrain an occupant.

  For vehicles with multiple seats arranged side by side in the vehicle width direction, when an impact is applied to a body side part such as a door due to a side collision, the passenger on the side close to the body side part (side collision side) must be protected. Of course, it is also important to protect the occupant on the side farther from the body side part (opposite side), and a side impact airbag device is effective as a means for protecting the passenger. As one aspect of this side-impact airbag device, an inflation gas is supplied from an inflator to an airbag fixed at the base end in response to an impact applied to the vehicle from the side by a side impact, and the airbag is There are some which expand and inflate between seats adjacent to each other in the direction, that is, near the center in the vehicle width direction. According to the airbag device for a side collision, the occupant on the opposite side can be received by the airbag, and interference with the occupant or interior product on the side collision side can be suppressed.

  In the above-described type of side-impact airbag device, the deployed and inflated airbag is in a so-called cantilever state in which only the proximal end portion is fixed. For this reason, it is important to prevent the airbag from being displaced from the deployed and inflated position even when a load applied to the side collision side of the occupant on the opposite side is applied to the airbag.

In this regard, for example, Patent Document 1 describes an occupant protection device that uses a pair of braided pipes that are expanded by gas generated from a gas generator. Each braided tube is stored in a storage position on a side portion of the seat in a bent state. In this retracted position, both ends of each braided tube are fixed to the front end of the side surface of the seat and the upper end of the side surface of the backrest. And if the impact by a side collision is detected, gas will be supplied to each braided pipe from a gas generator, and the braided pipe will expand. Each braided tube becomes thicker and shorter as it expands and is pulled out of the retracted position, and the front end of the seat and the upper end of the backrest are connected obliquely to restrict lateral displacement of the occupant. Since each braided pipe is fixed to the seat at both ends thereof, it is difficult to displace from the expanded position even when the load of the occupant on the opposite side is applied.
Japanese National Patent Publication No. 10-501799

  However, although the protective device described in Patent Document 1 can suppress the displacement of the braided pipe, the braided pipe has a tubular shape. The possible area is narrow. For this reason, the occupant on the opposite side cannot be received by the wide surface of the braided tube, and there is a possibility that the occupant cannot be restrained as intended.

  The present invention has been made in view of such circumstances, and its purpose is to hold the airbag in a deployed and inflated position while restraining an occupant in a wide area, and further improve restraint performance. An object of the present invention is to provide a side-impact airbag device that can be used.

  In order to achieve the above object, an invention according to claim 1 is directed to an inflation fluid generating source in an airbag fixed at a base end portion in a side collision of a vehicle in which a plurality of seats are arranged in parallel in the vehicle width direction. A side-impact airbag device that restrains an occupant by deploying and inflating the airbag between adjacent seats to restrain the occupant, and when the airbag is deployed and inflated, When the airbag is at least partially in contact with the airbag, it is tensioned between a location in front of the tip in the deployment direction of the airbag and a location in the rear of the tip or tip. The gist is to provide a displacement restricting member for restricting displacement in the vehicle width direction.

  According to said structure, when the impact by a side collision is added with respect to a vehicle from the side, the passenger | crew on the other side collision side will fall into the side collision side across the airbag. On the other hand, in response to the impact, inflation fluid is supplied from the inflation fluid generation source to the airbag, and the airbag is deployed and inflated between adjacent seats. The load accompanying the fall of the occupant on the opposite side acts on the airbag.

  Here, the deployed and inflated airbag is in a so-called cantilever state, which is fixed only at the base end. Therefore, if no measures are taken, the air bag may be displaced to the side collision side when the load from the occupant is applied as described above.

  However, in the first aspect of the present invention, the displacement regulating member is tensioned between a location in front of the tip in the deployment direction of the deployed airbag and a location in the rear of the tip or the tip. It is done. When at least a part of the tensioned displacement regulating member comes into contact with the airbag, the movement of the airbag is restricted in another place in addition to the base end portion which is a fixed end. Therefore, even if the passenger's load is applied, the airbag is not easily displaced in the vehicle width direction including the side collision side, and is held at the deployed and inflated position. The occupant is restrained by receiving the same load more reliably by the airbag than when no measures are taken.

In addition, since the airbag becomes a bag shape when deployed and inflated, it is possible to receive and restrain an occupant in a wider area than those that are deployed and inflated in a tubular shape.
As the displacement regulating member, for example, a non-stretchable strap can be used as in the invention described in claim 2. By using such a strap, the strap is difficult to stretch when tensioned, so that the airbag can be reliably held at the deployed and inflated position through restraint of the portion of the airbag that contacts the strap.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the displacement regulating member may be located at a position where the displacement regulating member is released from the seating area of the occupant in a relaxed state when the airbag is not deployed. The gist is that it is being arranged.

  If the displacement restricting member is wired in the above-described manner, the displacement restricting member is unlikely to obstruct the occupant taking the seating posture when the impact due to the side collision is not applied to the vehicle and the airbag does not inflate.

  According to a fourth aspect of the present invention, in the third aspect of the invention, the displacement regulating member is embedded in the vicinity of the surface of the interior product of the vehicle, and the exterior of the interior product is expanded when the airbag is deployed and inflated. The gist is that they are nervous.

  According to said structure, when the impact by a side collision is not added to a vehicle and an airbag does not inflate, a displacement control member cannot be exposed from the interior goods of a vehicle, and appearance is not impaired. Further, when an impact due to a side collision is applied to the vehicle and the airbag is deployed and inflated, the displacement restricting member comes out of the interior product and is tensioned to restrict the displacement of the airbag.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the airbag is provided in front of the tip in the deployment direction of the airbag, and the airbag is expanded and inflated. The gist of the present invention is to further include a retracting device that retracts the displacement regulating member.

  According to the above configuration, when the airbag is deployed and inflated, the retracting device is operated, so that the displacement regulating member is pulled and tensioned, and tension is applied to the airbag to pull it forward in the deployment direction. This tension ensures that the airbag is held at the deployed and inflated position.

  According to the airbag apparatus for a side collision of the present invention, the airbag is deployed and inflated in a bag shape at the time of a side collision of the vehicle, and the displacement regulating member is tensioned to regulate the displacement of the airbag in the vehicle width direction. The airbag can be held in the deployed and inflated position while restraining the occupant in a wide area, and the restraint performance can be further improved.

Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
In the following description, the forward direction of the vehicle will be described as the front (front of the vehicle), and the reverse direction of the vehicle will be described as the rear (rear of the vehicle). Further, in the following description, the vertical direction means the vertical direction of the vehicle, and the horizontal direction is the vehicle width direction of the vehicle and coincides with the horizontal direction when the vehicle moves forward.

  As shown in at least one of FIGS. 1 and 2, a plurality of seats are arranged in the vehicle interior (inside the vehicle compartment 11). These seats are arranged side by side in the vehicle width direction in a pair of front seats (driver seat 12 and passenger seat 13) arranged in parallel in the vehicle width direction at the front portion in the passenger compartment 11. And a pair of rear seats 14,15. Each of the driver's seat 12 and the passenger seat 13 includes a seat portion 16 disposed substantially horizontally and a backrest portion 17 disposed on the rear side of the seat portion 16. A center console 18 extending in the vehicle front-rear direction is provided between the seat 16 of the driver seat 12 and the seat 16 of the passenger seat 13. The center console 18 is provided with operation portions such as a shift lever and a side brake lever, and is provided with a storage space such as a cup holder, an ashtray, and an accessory case.

  The left and right rear seats 14 and 15 are also provided with a seat portion 21 and a backrest portion 22 in the same manner as the driver seat 12 and the like. Between both the seat parts 21, the intermediate part 23 which has the length comparable as the length in the vehicle front-back direction of the seat part 21 is provided. Further, an extended portion 24 extending upward from the rear end portion of the intermediate portion 23 is provided between the backrest portions 22. An accommodating portion 25 is provided on the upper portion of the extending portion 24.

  In the vehicle of this embodiment, when a side impact is applied to the vehicle from the side, a side collision air is provided as a means for protecting the passenger P on the rear side (this will be described later) on the opposite side. Equipped with a bag device. Next, this apparatus will be described.

  As shown in at least one of FIG. 3 and FIG. 4, an airbag module AM that forms a main part of the side-impact airbag device is accommodated in the accommodating portion 25. The airbag module AM includes an inflation fluid generation source and an airbag 27. The expansion fluid generation source includes an inflator 26 that generates an expansion gas G as an expansion fluid.

  There are a plurality of types of inflators 26 due to differences in the manner of generation of the expansion gas G. Here, an inflator 26 called a pyrotype is used. Inside this type of inflator 26, a gas generating agent (not shown) that generates the expansion gas G is accommodated. The inflator 26 is provided with a plurality of gas ejection holes 26A (see FIG. 4) through which the expansion gas G generated by the gas generating agent is ejected, and a harness serving as a control signal application wiring to the inflator 26 (Not shown) is connected. The inflator 26 is fixed to the inner wall or the like of the housing portion 25.

  As the inflator 26, a type different from the above pyro type may be used. Such types include stored gas types in which the bulkhead of a high-pressure gas cylinder filled with high-pressure gas is ruptured with explosives and the like, and an expansion gas G is ejected, or a hybrid type in which both a pyro type and a stored gas type are combined. Is mentioned.

  Moreover, the airbag 27 which comprises the airbag module AM with the said inflator 26 is accommodated in the accommodating part 25 in the state made compact by folding.

  The airbag 27 has a high strength and is flexible and can be easily folded. For example, a woven fabric formed of polyester yarn, polyamide yarn, or the like is used as the base fabric 30. Is formed into a predetermined bag shape by, for example, sewing the peripheral edge portion thereof with a sewing thread. In addition, the thick broken line in FIG. 4 has shown the sewing part by a sewing thread | yarn. The airbag 27 is fixed to the inner wall or the like of the housing portion 25 with the rear end at the upper end as a base end portion 27B. The airbag 27 has a size and shape that can protect the occupant P of the rear seats 14 and 15 from the side when the deployment and inflation are completed (see FIG. 3). This size is smaller than the size at which the airbag 27 comes into contact with the interior product in the passenger compartment 11, for example, the roof panel RP, the intermediate portion 23, etc., when deployment and inflation are completed (see FIG. 6).

  Further, as shown in at least one of FIGS. 5 and 6, the vehicle uses a strap 28 as a displacement regulating member that regulates displacement in the vehicle width direction of the airbag 27 that is deployed and inflated at the time of the side collision. The strap 28 is formed of a material having flexibility and non-stretchability. As such a material, for example, a closely woven fabric is suitable.

  The displacement restriction by the strap 28 is such that when the airbag 27 is deployed and inflated, with at least a portion of the strap 28 in contact with the airbag 27, a location ahead of the tip 27T in the deployment direction of the airbag 27, It is carried out by tensioning between the tip 27T or a location behind the tip 27T. Here, the rear part of the center console 18 is set as the former part, and the tip 27T of the airbag 27 is set as the latter part.

  The rear end portion 28R of the strap 28 is fixed in the vicinity of the front end 27T of the airbag 27 by means such as sewing and bonding. As described above, since the airbag 27 is accommodated in the accommodating portion 25 when the airbag 27 is not inflated, the rear end portion 28R of the strap 28 is also accommodated in the accommodating portion 25 when the airbag 27 is not inflated. (See FIG. 5). Further, the front end portion 28 </ b> F of the strap 28 is connected to a retracting device 29 built in the rear portion of the center console 18. The retracting device 29 has a known mechanism for retracting the strap 28 when the airbag 27 is deployed and inflated, and a portion of the strap 28 protruding backward from the retracting device 29 is defined in the airbag 27. Adjust and hold the appropriate length to apply tension.

  When the airbag 27 is not deployed and inflated, the strap 28 is arranged at a position where the strap 28 is loosened and is out of the seating area A of the occupant P (see FIG. 5). Here, the seating area A is a space occupied when the occupant P takes a sitting posture (when seated on the rear seats 14 and 15). In FIG. 5, the space surrounded by the two-dot chain line corresponds to the seating region A. The strap 28 is embedded in the vicinity of each surface of the center console 18, the floor carpet 19, the intermediate portion 23, and the extending portion 24, which are interior parts of the vehicle, as the above-described portions. More specifically, in the center console 18, the strap 28 is disposed in the center console 18 at a location close to the surface thereof. The same applies to the intermediate portion 23 and the extending portion 24. Further, with respect to the floor carpet 19, the strap 28 is disposed between the floor of the vehicle and the floor carpet 19. The strap 28 is covered with the floor carpet 19, and is in the same state as being buried near the surface of the floor carpet 19. In the following description, when there is no need to particularly distinguish the center console 18, the floor carpet 19, the intermediate portion 23, and the extended portion 24, they may be simply referred to as “interior products”. In the surface portion of each interior part, the vicinity of the strap 28 is formed with a lower strength than the other surface portions, and when the tension by the tensioning strap 28 is applied, the strap 28 breaks relatively easily. Jumping out from the interior is allowed.

  The side airbag device includes an impact sensor 31 and a control device 32 in addition to the inflator 26 and the airbag 27 described above. The impact sensor 31 includes an acceleration sensor or the like, and is provided on the body side portion 33 (see FIG. 2) of the vehicle. Here, the body side portion 33 refers to a member disposed on the side portion of the vehicle, and mainly corresponds to a door, a pillar, and the like. The impact sensor 31 detects an impact applied to the body side portion 33 from the side. The control device 32 controls each operation of the inflator 26 and the retracting device 29 based on the detection signal from the impact sensor 31.

  As described above, the side airbag device of the present embodiment is configured. In this side-impact airbag device, if the impact sensor 31 does not detect that an impact of a predetermined value or more has been applied to any of the body side portions 33, the control device 32 controls each of the inflator 26 and the retracting device 29. On the other hand, a command signal for operating them is not output. Therefore, the inflator 26 does not generate the expansion gas G by the gas generating agent. Further, the retracting device 29 does not retract the strap 28. In the relaxed state, the strap 28 is near each surface of the interior parts of the vehicle (the center console 18, the floor carpet 19, the intermediate portion 23, and the extending portion 24) that are located at positions away from the seating area A of the occupant P. Continue to be buried. Therefore, the strap 28 cannot be exposed from each of the above interior parts and is not visually recognized by the passenger P. Further, the strap 28 does not touch the occupant P taking a sitting posture.

  By the way, in the situation where the occupant P is seated in the left and right rear seats 14 and 15, when an impact due to a side collision is applied to one body side portion 33, the opposite side collision side with the airbag 27 interposed therebetween. Passenger P tries to fall into the side collision. Here, “side collision side” and “opposite side collision side” are words for distinguishing the rear seats 14 and 15 in the vehicle width direction and the occupant P seated on the rear seats 14 and 15. . The “side collision side” refers to a side close to the body side part 33 to which an impact due to a side collision is applied, and the “opposite side collision side” refers to a side far from the body side part 33.

  On the other hand, when an impact of a predetermined value or more is applied to the body side portion 33 and this is detected by the impact sensor 31, a command signal for operating the inflator 26 is sent from the control device 32 to the inflator 26 based on the detection signal. Is output. In response to the command signal, the inflator 26 generates a high-temperature and high-pressure expansion gas G by the gas generating agent and ejects it from the gas ejection hole 26A. By supplying the inflation gas G to the airbag 27, the airbag 27 starts to be inflated while eliminating the folding. The airbag 27 exits forward from the housing portion 25 with a part (base end portion 27 </ b> B) remaining in the housing portion 25. After that, the supply of the inflation gas G is continued for a certain period, so that the airbag 27 is deployed and inflated toward the front lower side through the gap between the two passengers P, as shown in FIG. 3 and FIG. Become a shape. The space above the seat 21 in the left and right rear seats 14, 15 is partitioned by the airbag 27 to the left and right. In other words, the airbag 27 is interposed between the occupants P seated on the left and right rear seats 14 and 15. A load accompanying the fall of the occupant P on the opposite side of the airbag 27 acts on the airbag 27 from the side.

  Here, the deployed and inflated airbag 27 is in a so-called cantilever state that is fixed only at the base end portion 27B. Therefore, if no measures are taken, when the load from the occupant P acts as described above, the airbag 27 may be displaced to the side collision side.

  In this regard, in the present embodiment, a command signal for operating the pull-in device 29 is output from the control device 32 to the pull-in device 29 based on the detection signal from the impact sensor 31. In response to this command signal, the pulling device 29 operates to pull the strap 28. With this pull-in, the strap 28 is pulled forward, the vicinity of the strap 28 in the surface portion of each interior product is broken, and the strap 28 jumps out of each interior product through the broken portion. The pull-in is performed until the strap 28 is tensioned to an appropriate length for applying tension to the deployed and inflated airbag 27. When this tension is applied, the strap 28 itself is difficult to stretch. This tensioned strap 28 provides the airbag 27 with a tension that pulls the airbag 27 forward (diagonally forward and downward). The airbag 27 is restrained from movement by the strap 28 in the vicinity of the distal end 27T in addition to the base end portion 27B (rear upper end) that is a fixed end, and is held in a deployed and inflated position. Further, the airbag 27 is formed into a bag shape when deployed and inflated. For this reason, the occupant P is received and restrained by the airbag 27 in a wider area as compared with the one that expands and expands into a tubular shape (Patent Document 1 corresponds to this). As a result, even if the above-mentioned load of the occupant P is applied, the airbag 27 is less likely to displace to the side collision side, and the same load is more reliably received than when no measures are taken. The applied impact is reduced.

  In the above embodiment, the case where the airbag 27 is deployed and inflated between the two passengers P sitting on the left and right rear seats 14 and 15 has been described. Even in the case where the occupant P is seated only in 15), the same action as in the above embodiment is performed. Further, even in a layout in which the rear-seat 15 (or 14) on the side collision side is tilted and a space of a predetermined volume such as a space for loading luggage is formed above it, the same as in the above embodiment Is performed. In this case, interference between the luggage and the occupant P on the opposite side is suppressed.

According to the embodiment described in detail above, the following effects can be obtained.
(1) As the airbag 27, an airbag 27 that expands and inflates in a bag shape between the adjacent rear seats 14 and 15 (near the side of the occupant P) is used. Further, when the airbag 27 is inflated and inflated, at least a part of the strap 28 is in contact with the airbag 27 (the rear end 28R is fixed to the airbag 27), and the strap 28 is deployed in the direction in which the airbag 27 is deployed. Tension is made between a position ahead of the tip 27T and the tip 27T. With this strap 28, tension is applied to the airbag 27 to pull it forward in the deployment direction, and displacement of the airbag 27 in the vehicle width direction is restricted, so that the airbag 27 is held at the deployed and inflated position. Can do. The load on the side collision side of the occupant P on the opposite side caused by the side collision can be reliably received in a wide area by the airbag 27 that is deployed and inflated in a bag shape. The occupant restraint performance can be further improved as compared with Patent Document 1 in which the braided tube is expanded and expanded into a tubular shape.

  (2) The strap 28 is made of a non-stretch woven fabric. Therefore, the strap 28 is not easily stretched when being tensioned, and appropriately applies tension to the airbag 27. As a result, the airbag 27 can be reliably held at the deployed and inflated position through restraint of the portion (tip 27T) where the strap 28 contacts in the airbag 27.

  (3) When the airbag 27 is not inflated and inflated, the strap 28 is relaxed, and is routed to a place deviated from the seating area A of the occupant P (see the two-dot chain line in FIG. 5). For this reason, it is possible to prevent the strap 28 from interfering with the occupant P taking the sitting posture when the impact due to the side collision is not applied to the vehicle and the airbag 27 is not inflated.

  (4) The strap 28 is embedded in the vicinity of the surface of each interior product (intermediate portion 23, extension portion 24, etc.) of the vehicle, and the strap 28 is brought out of each interior product when the airbag 27 is deployed and inflated. I try to let them. Therefore, when the impact due to the side collision is not applied to the vehicle and the airbag 27 does not inflate, the appearance of the appearance can be suppressed from being exposed without causing the strap 28 to be exposed from the interior parts of the vehicle.

  (5) A retracting device 29 for retracting the strap 28 when the airbag 27 is deployed is provided in front of the distal end 27T in the deployment direction of the airbag 27. Therefore, by operating the retracting device 29 when the airbag 27 is deployed and inflated, the strap 28 can be retracted, and the strap 28 can be tensioned to an appropriate length to apply tension to the airbag 27. By pulling the airbag 27 forward in the deployment direction, the airbag 27 can be reliably held at the deployed and inflated position.

Note that the present invention can be embodied in another embodiment described below.
<About strap 28>
-As shown with a dashed-two dotted line in FIG. 4, you may change the fixing position of the rear-end part 28R of the strap 28 with respect to the airbag 27 to the deployment direction back rather than the front-end | tip 27T. In this case, the rear end portion 28 </ b> R of the strap 28 is fixed to one side surface of the airbag 27.

Two straps 28 may be used, and the rear end portion 28 </ b> R of each strap 28 may be fixed to both side surfaces of the airbag 27.
As shown in FIG. 7, the rear end portion 28 </ b> R of the strap 28 is replaced with the distal end 27 </ b> T of the airbag 27, and is fixed to the base end portion 27 </ b> B or the vicinity thereof (structure in the vicinity of the airbag 27). When the airbag 27 is deployed and inflated, the lower end portion 27L of the airbag 27 is arranged below the airbag 27 by tensioning the rear half of the strap 28 along the upper edge portion 27U of the airbag 27. You may make it press on goods, for example, the intermediate part 23. FIG.

  Due to the friction between the lower edge portion 27L and the intermediate portion 23 due to the pressing, the lower edge portion 27L is difficult to move in the vehicle width direction. In addition to the base end portion 27B that is a fixed end, the airbag 27 is also restrained in movement at the upper edge portion 27U and the lower edge portion 27L. For this reason, the displacement of the airbag 27 in the vehicle width direction can be regulated by the strap 28, and the airbag 27 can be held at the deployed and inflated position, and the same operations and effects as in the above embodiment can be obtained.

  The fixing location of the front end portion 28F of the strap 28 may be changed to a location different from the retracting device 29 on the condition that “the location in front of the tip 27T in the deployment direction of the airbag 27”. For example, the front end portion 23F of the intermediate portion 23 shown in FIG. In this case, the function of adjusting the length of the strap 28 by the retracting device 29 is lost, but when the airbag 27 is deployed and inflated, the strap 28 is tensioned along the upper edge portion 27U of the airbag 27 to It is possible to apply a downward force to. Accordingly, in this case as well, as in FIG. 7, the lower edge portion 27L of the airbag 27 can be pressed against the interior product (intermediate portion 23) of the vehicle to restrict the displacement of the airbag 27 in the vehicle width direction.

  Although not shown, the front end portion 28F of the strap 28 is fixed to the roof panel RP, which is an interior product above the airbag 27, and the rear portion of the strap 28 is fixed to the airbag 27 when the airbag 27 is deployed and inflated. The upper edge portion 27U of the airbag 27 may be pressed against the roof panel RP by tensioning along the lower edge portion 27L.

  Friction between the upper edge portion 27U and the roof panel RP accompanying this pressing makes the upper edge portion 27U difficult to move in the vehicle width direction. In addition to the base end portion 27B that is a fixed end, the airbag 27 is also restrained in movement at the upper edge portion 27U and the lower edge portion 27L. For this reason, the displacement of the airbag 27 in the vehicle width direction can be regulated by the strap 28, and the airbag 27 can be held at the deployed and inflated position, and the same operations and effects as in the above embodiment can be obtained.

A member having a form different from that of the strap 28 may be used as the displacement restricting member.
<Expansion fluid generation source and expansion fluid>
A fluid other than the expansion gas G may be used as the expansion fluid. In connection with this, you may use what has a structure different from the said inflator 26 as an expansion | swelling fluid generation | occurrence | production source.

<Regarding Arrangement Position of Airbag 27 and Inflator 26>
-You may arrange | position the airbag 27 and the inflator 26 in the location different from the said upper end part of the extension part 24, for example, a lower end part. Further, the airbag 27 and the inflator 26 may be disposed at a location different from the extending portion 24 and at a location where the position does not change when the airbag 27 is deployed and inflated. For example, the roof panel RP, the intermediate portion 23, the center console 18 and the like can be cited as the above-mentioned places. With this change, the deployment direction of the airbag 27 is different. For example, when the airbag 27 and the inflator 26 are arranged in the center console 18, the airbag 27 is deployed and inflated obliquely rearward and upward.

  However, when the airbag 27 is arranged in the extended portion 24 as in the above embodiment, the following advantages are obtained as compared with the case where the airbag 27 is arranged in another location. Compared to the case where the airbag 27 is disposed on the roof panel RP or the like, the airbag 27 can be disposed near the occupant P seated on the left and right rear seats 14 and 15, and is closer to the occupant P when the vehicle collides. The airbag 27 can be deployed and inflated from the location, and the occupant P can be protected quickly.

<Regarding the location of the retractor 29>
-With the said change of the arrangement location of the airbag 27 and the inflator 26, you may change the arrangement location of the drawing-in apparatus 29 as needed. For example, when the airbag 27 and the inflator 26 are disposed in the center console 18, the retracting device 29 may be disposed in the extending portion 24. In addition, the retracting device 29 may be disposed on a roof panel RP that is an interior product of the vehicle.

<Applicable range of side airbag device>
The side airbag device of the present invention can be applied not only to the rear seats 14 and 15 of the vehicle but also to the front seats (the driver seat 12 and the passenger seat 13). That is, the airbag 27 can be deployed and inflated between the passenger P sitting on the driver seat 12 and the passenger seat 13 adjacent to the driver seat 12 in the vehicle width direction to protect the passenger P. In this case, the accommodating portion 25 in which the airbag module AM is accommodated may be provided, for example, inside the center cluster panel that is disposed in the center portion of the instrument panel in the vehicle width direction. In short, the side airbag device may be any device that deploys and inflates an airbag between adjacent seats.

  The side airbag device according to the present invention is a vehicle that does not have the intermediate portion 23 and the extended portion 24 between the left and right rear seats 14, 15, that is, the vehicle in which the left and right rear seats 14, 15 are adjacent to each other. It is also applicable to. In this case, it is desirable to accommodate the airbag 27 at a location near one of the rear seats 14 (or 15) and the other rear seat 15 (14).

  The side airbag device of the present invention can be applied to a vehicle in which three or more seats are arranged in the vehicle width direction. Even in this case, the airbag is deployed and inflated in a bag shape between adjacent seats when the vehicle collides.

In addition, the technical ideas that can be grasped from the respective embodiments will be described together with their effects.
(A) In the side collision airbag device according to any one of claims 1 to 5, the displacement regulating member is fixed at a position forward of the tip of the airbag at one end thereof. The lower edge portion of the airbag is fixed at or near the base end portion of the airbag at the end, and is tensioned along the upper edge portion of the airbag when the airbag is deployed and inflated. Is pressed onto the interior of the vehicle.

  According to the above configuration, the displacement regulating member is tensioned along the upper edge portion of the airbag when the airbag is deployed and inflated. A downward force is applied to the airbag by the tensioned displacement regulating member, and the lower edge of the airbag is pressed against the interior of the vehicle. Therefore, the airbag is in a state in which movement is restricted at the upper edge portion and the lower edge portion in addition to the base end portion which is a fixed end. In this manner, the displacement of the airbag in the vehicle width direction can be regulated by the displacement regulating member.

  (B) In the side airbag device according to any one of claims 1 to 5, the displacement restricting member is fixed at a position in front of the front end of the airbag at one end thereof. The upper edge portion of the airbag is fixed at or near the base end portion of the airbag at the end portion, and is tensioned along the lower edge portion of the airbag when the airbag is deployed and inflated. Press against the roof panel of the vehicle.

  According to the above configuration, the displacement regulating member is tensioned along the lower edge of the airbag when the airbag is deployed and inflated. Due to this strained displacement regulating member, an upward force acts on the airbag, and the upper edge of the airbag is pressed against the roof panel. Therefore, the airbag is in a state in which movement is restricted at the lower edge portion and the upper edge portion in addition to the base end portion which is a fixed end. In this manner, the displacement of the airbag in the vehicle width direction can be regulated by the displacement regulating member.

The partial perspective view which shows the airbag apparatus for side collision in one Embodiment which actualized this invention with the seat of a vehicle. The schematic top view of the airbag apparatus for a side collision and a seat similarly. The general | schematic front sectional view of the airbag apparatus for side impacts similarly, and a seat. The partially broken side view which shows the airbag module in the embodiment. In the same embodiment, the schematic side view which shows the airbag apparatus for side collision at the time of a non-side collision with the seat of a vehicle. In the same embodiment, the schematic side view which shows the airbag apparatus for side collision at the time of a side collision with the seat of a vehicle. The schematic side view which shows another embodiment of the airbag apparatus for side collisions. The schematic side view which shows another embodiment of the airbag apparatus for side collision similarly.

Explanation of symbols

  12 ... Driver's seat (seat), 13 ... Passenger seat (seat), 14, 15 ... Rear seat (seat), 18 ... Center console (interior), 19 ... Floor carpet (interior), 23 ... Middle part (interior) Product), 24 ... extension portion (interior product), 26 ... inflator (inflation fluid generation source), 27 ... air bag, 27B ... base end portion, 27T ... tip, 28 ... strap (displacement regulating member), 29 ... retracting Device, A ... Seating area, G ... Expansion gas (expansion fluid), P ... Crew.

Claims (5)

In the event of a side collision of a vehicle in which a plurality of seats are arranged side by side in the vehicle width direction, inflation fluid is supplied from an inflation fluid generation source to an airbag fixed at the base end, and the airbag is formed in a bag shape between adjacent seats A side-impact airbag device that is deployed and inflated to restrain an occupant,
When the airbag is deployed and inflated, with at least a part of the airbag in contact with the airbag, a location in front of the tip in the deployment direction of the airbag and a location in front of the tip or in the rear of the tip A side-impact airbag device comprising a displacement regulating member that regulates displacement of the airbag in the vehicle width direction by tensioning between the airbags. The side impact airbag device according to claim 1, wherein the displacement regulating member includes a non-stretchable strap. The side-impact airbag device according to claim 1 or 2, wherein the displacement regulating member is arranged at a position where the displacement regulating member is released from a seating area of the occupant in a relaxed state when the airbag is not deployed and inflated. The side collision air according to claim 3, wherein the displacement regulating member is embedded in the vicinity of the surface of the interior product of the vehicle, and is tensioned to the outside of the interior product when the airbag is deployed and inflated. Bag device. The side collision according to any one of claims 1 to 4, further comprising a retracting device that is provided in front of the tip in the deployment direction of the airbag and that retracts the displacement regulating member when the airbag is deployed and inflated. Air bag device.

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