JP2010115960A - Airbag device between vehicle seats - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an airbag device between vehicle seats capable of effectively suppressing displacement of a seated passenger in a seat in a vehicle width direction with an airbag expanded between the seats arranged in the vehicle width direction. <P>SOLUTION: A rear seat far side airbag device 10 includes: a retractable arm rest 20 which takes a storage position stored in a storage concave part 22 between a pair of right/left seats 12, 14 and a usage position extending in a vehicle anteroposterior direction between the seats 12, 14; an airbag 24 provided in a seat back 16A of the retractable arm rest 20 and a center seat 16 and expanded between the right/left seats 12, 14 by receiving gas supply; and a rear side fixing part 28 which connects a vehicle front end part of the airbag 24 with a front side fixing part 26 in the storage concave part 22, and fixes the vehicle rear end part of the airbag 24 with the upper end side of the storage concave part in the seat back. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an inter-seat airbag device for a vehicle.

From the seat back or seat cushion of the central seat located in the center of the rear seat in the vehicle width direction, the airbag is inflated and deployed between the seats located on the left and right of the central seat, and the seat located on the left and right of the central seat in the airbag A technique for receiving a seated occupant is known (for example, see Patent Document 1). In this technique, a strap is stretched between the left and right tip portions of the deployed airbag and the rear seat, thereby suppressing displacement of the airbag. In addition, a technique for deploying an airbag on a central seat of a rear seat is known (see, for example, Patent Document 2).
JP 2008-137458 A JP 2008-1000060 A

  However, in the conventional technology as described above, the airbag deployed on the center seat sufficiently prevents the seated occupant on the outer side in the vehicle width direction of the center seat from moving to the opposite side in the vehicle width direction. There is room for improvement in this regard.

  In consideration of the above-described facts, the present invention can effectively suppress displacement in the vehicle width direction of a seated occupant to a seat by an airbag deployed between seats arranged in parallel in the vehicle width direction. It is an object to obtain an inter-seat airbag device.

  The inter-seat airbag device for a vehicle according to claim 1 is provided between the left and right seats integrally formed side by side in the vehicle width direction, and is stored in a storage recess formed in the seat back. A retractable armrest that can take a position and a use position extending in the vehicle front-rear direction between the seats, and an upper side of the armrest that is provided in the armrest and the seat back and is located at the use position after receiving gas supply And an airbag that is deployed on the front side of the storage recess, a front-side fixing portion that fixes a vehicle front end portion of the airbag to a portion of the armrest that is located on the vehicle front end side at the use position, and A rear side fixing portion that fixes a rear end portion of the vehicle to an upper end side of the storage recess in the seat back.

  In the inter-seat airbag device according to claim 1, for example, when a side collision to the applied vehicle is detected or predicted, gas is supplied to the airbag. Then, the airbag is inflated and deployed above the armrest located at the use position and in front of the storage recess (seat back), that is, between the left and right seats.

  Here, in the inter-seat airbag apparatus for a vehicle, the front end portion of the airbag is fixed at the front end portion of the armrest located at the use position, and the rear end portion of the airbag is in the seat back. Since the rear fixing portion is fixed on the upper end side of the storage recess, a tension line that connects the front fixing portion and the rear fixing portion is formed in the airbag. In the inter-seat airbag apparatus for a vehicle, the airbag is deployed in a state where a part of the rear end side is held between the side walls of the storage recess. Accordingly, the airbag deployed between the left and right seats can secure a support reaction force in the vehicle width direction, and can effectively suppress displacement of the seated occupant in the vehicle width direction. .

  Thus, in the inter-seat airbag device according to claim 1, the airbag deployed between the seats arranged in parallel in the vehicle width direction effectively displaces the seated occupant in the seat in the vehicle width direction. Can be suppressed.

  According to a second aspect of the present invention, there is provided an inter-seat airbag apparatus for a vehicle according to the first aspect, wherein the inflator for supplying gas to the airbag is provided in the airbag. The lower portion in the seat back is fixed to the vehicle body in a posture along the vehicle width direction.

  In the inter-seat airbag device according to claim 2, since the inflator elongated in the vehicle width direction in the airbag is fixed to the vehicle body, the airbag is more resistant to the load acting in the vehicle width direction. Stable deployment. Therefore, the occupant restraint by the airbag is also improved.

  The inter-seat airbag device for a vehicle according to a third aspect of the present invention is the inter-seat airbag device for a vehicle according to the first or second aspect, wherein the airbag is opposed in the vehicle width direction in a deployed state. It has a wall part which connects a pair of side wall part and is stretched linearly between the fixing | fixed part to the said armrest and the fixing | fixed part to the said seat back.

  In the inter-seat airbag device according to claim 3, since the wall portion of the airbag is tensioned along the above-described tear line, the tear line is formed only on the side wall portion of the airbag. The airbag is more stably deployed against a load acting in the vehicle width direction. Therefore, the occupant restraint by the airbag is also improved.

  The inter-seat airbag device for a vehicle according to a fourth aspect of the present invention is the inter-seat airbag device for a vehicle according to any one of the first to third aspects, wherein the armrest is located at a retracted position. Applied to a rear seat in which the space between the left and right seats is a central seat, and gas is supplied to the airbag when the armrest is in a use position or when there is no seated occupant in the central seat. To be allowed.

  In the inter-seat airbag device according to claim 4, when the armrest is located at the use position, or when a seated occupant is not present in the central seat, for example, when a side collision or the like is detected or predicted, Gas is supplied, and the airbag is deployed between the seats located on both sides of the central seat in the vehicle width direction (on the central seat). In the latter case, the armrest may be deployed from the storage position to the use position by the deployment pressure of the airbag.

  As described above, the inter-seat airbag apparatus for a vehicle according to the present invention effectively displaces a seated occupant in the vehicle width direction by the airbag deployed between the seats arranged in parallel in the vehicle width direction. It has an excellent effect that it can be suppressed.

  A rear seat far-side airbag device 10 as an inter-seat airbag device for a vehicle according to an embodiment of the present invention will be described with reference to FIGS. Note that the arrows FR, UP, RH, and LH, which are appropriately shown in each drawing, face the front direction (traveling direction), the upward direction, and the front side of the automobile to which the rear-seat far-side airbag device 10 is applied, respectively. The right side and the left side (one in the vehicle width direction and the other) are shown. First, the outline | summary of the structure used as the premise of application of the rear seat far side airbag apparatus 10 in a motor vehicle is demonstrated, and suppose that the rear seat far side airbag apparatus 10 is demonstrated.

  FIG. 4 is a perspective view of the rear seat 11 to which the rear seat far-side airbag device 10 is applied. As shown in this figure, the rear seat 11 is a three-seat seat (so-called bench seat) in which a central seat 16 is provided between a right seat 12 and a left seat 14. Although not shown, the right seat 12, the left seat 14, and the center seat 16 are provided with seat belt devices for seated passengers.

  Further, side airbag devices 18 are respectively provided on both outer sides of the rear seat 11 in the vehicle width direction. The side airbag device 18 is embedded in the right side portion of the seat back 12A of the right seat 12 and the left side portion of the seat back 14A of the left seat 14, and the right seat is detected when a side collision of the automobile is detected or predicted. 12. A side airbag (not shown) is inflated and deployed on the outer side of the left seat 14 with respect to the seated occupant in the vehicle width direction.

  Further, the rear seat 11 is provided with a retractable armrest 20. The retractable armrest 20 can take a storage position stored in a storage recess 22 formed in the seat back 16A of the center seat 16 and a use position extending in the vehicle front-rear direction on the seat cushion 16B of the center seat 16. It is configured. Specifically, the retractable armrest 20 is supported so as to be rotatable around the rotation shaft 20A along the vehicle width direction with respect to the seat back 16A at the lower end portion at the retracted position. The retractable armrest 20 is angularly displaced to the use position side by pulling the upper end side at the retracted position downward in the front of the vehicle.

  The retractable armrest 20 located at the retracted position constitutes a part of the seat back 16 </ b> A of the central seat 16. Further, when the retractable armrest 20 is located at the use position, the retractable armrest 20 is dimensioned so that the seated occupant of the right seat 12 and the left seat 14 can take a posture suitable for placing the arm (elbow) located on the inner side in the vehicle width direction. The shape is determined.

  The far-seat airbag device 10 for the rear seat is provided between the retractable armrest 20 and the seat back 16A of the central seat 16 (the bottom of the storage recess 22), and as shown in FIG. The airbag 24 is deployed on the central seat 16 in a predetermined case. This will be specifically described below.

  As shown in FIGS. 1 and 2, the airbag 24 is substantially rectangular in a side view deployed in the storage recess 22 and in a side view deployed in front of the seat back 16 </ b> A of the central seat 16. The triangular portion is developed in a substantially trapezoidal shape as viewed from the side. In this embodiment, the airbag 24 has a pair of left and right side wall portions 24A opposed to each other in the vehicle width direction, and a top wall portion 24B that connects the upper edges of the side wall portions 24A over the entire length. The central seat 16 is unfolded and exposed in front of the seat back 16A.

  In the airbag 24, the front lower end 24C of the top wall 24B is fixed in the vicinity of the end of the retractable armrest 20 on the side opposite to the rotating shaft 20A. More specifically, the front lower end 24 </ b> C of the top wall 24 </ b> B is fixed to the front fixing part 26 that is the front end of the top wall 20 </ b> B at the use position in the retractable armrest 20 by, for example, fastening. On the other hand, the rear upper end portion 24D of the top wall portion 24B of the airbag 24 is located in the vicinity of the front end side portion of the upper wall 22A of the storage recess 22 of the central seat 16 on the rear fixing portion 28 set on the seat back frame 32. For example, it is fixed by fastening or the like.

  Therefore, when not in use, the airbag 24 is bent along the top wall 20B of the retractable armrest 20 and the bottom wall 22B of the retractable recess 22 as shown in FIG. 3 (when the retractable armrest 20 is located at the retracted position). (Substantially folded). An inflator 30 is disposed in the vicinity of the bent portion (folded portion) in the airbag 24. 2 and 3, the inflator 30 is located behind the end of the retractable armrest 20 on the rotating shaft 20A side and in the seat back 16A of the center seat 16 (the vehicle rear of the bottom wall 22B of the storage recess 22). It is buried in.

  The inflator 30 has a substantially cylindrical appearance, and has an attitude in which the axis (longitudinal) direction substantially coincides with the vehicle width direction, directly or via a bracket or the like on the seat back frame 32 of the seat back 16A. It is fixed. The seat back frame 32 as a vehicle body also functions as a reaction force support surface on the back side when the airbag 24 is inflated and deployed. Further, a support plate 34 that functions as a reaction force support surface on the lower surface side when the airbag 24 is inflated and deployed is embedded in the retractable armrest 20.

  Further, as shown in FIG. 4, airbags 24 are deployed outside the top wall 20B of the retractable armrest 20 and the top wall 22A and the bottom wall 22B of the storage recess 22 in the seat back 16A of the center seat 16. Air bag doors 36, 37, and 38 are formed for this purpose.

  The airbag door 36 of the retractable armrest 20 is located in the vicinity of both side edges of the top wall 20B in the vehicle width direction with the tearing of the tear line 40 formed on the top wall 20B so as to form a substantially H shape in plan view. It has a pair of left and right side doors 36A that are deployed outward in the vehicle width direction as hinge portions. In addition, the airbag door 36 is located in the vicinity of the front edge of the vehicle on the top wall 20B with the tearing of the tear line 40 formed along both side edges in the vehicle width direction in front of the side door 36A on the top wall 20B. It has a front door 36B that is deployed on the front side of the vehicle as a hinge portion. In this embodiment, the front side fixing portion 26 to which the front lower end portion 24C of the airbag 24 is fixed is set to the front door 36B. In addition, the front side fixing | fixed part 26 may be provided in parts other than the airbag door 36 in the top wall 20B, and the airbag door 36 is good also as a structure which does not have the front door 36B.

  The airbag door 38 on the bottom wall 22B of the storage recess 22 of the seat back 16A has a vehicle on the bottom wall 22B as the tear line 42 formed on the bottom wall 22B forms a substantially H shape when viewed from the front. It is composed of left and right doors that are developed outward in the vehicle width direction with the vicinity of both side edges in the width direction as hinge portions. Further, the airbag door 37 on the upper wall 22A of the storage recess 22 of the seat back 16A has an upper wall 22A along with the tearing of the tear line 44 formed on the upper wall 22A so as to form a substantially H shape in bottom view. The left and right doors are developed to the outside in the vehicle width direction with hinges in the vicinity of both side edges in the vehicle width direction.

  Further, as shown in FIG. 3, the rear-seat far-side airbag device 10 includes an ECU 46 as a control device that controls the operation of the inflator 30. The ECU 46 is electrically connected to the armrest position sensor 48 for detecting whether the position of the retractable armrest 20 is the storage position or the use position, the side collision sensor 50 for detecting a side collision of the automobile, and the inflator 30. It is connected to the. The ECU 46 receives a signal corresponding to the retractable armrest 20 being located at the use position from the armrest position sensor 48 when a signal corresponding to the side collision occurring in the vehicle is input from the side collision sensor 50. The inflator 30 is operated on the condition that

  Note that the ECU 46 may be configured to operate the inflator 30 on condition that a seated occupant is present on at least one of the right seat 12 and the left seat 14, for example. In this case, for example, a seating presence signal from the seating sensor of the left seat 14, a buckle coupling signal from the buckle sensor of the seat belt device, or the like can be used as the operating condition of the inflator 30. In this embodiment, the ECU 46 also has a function of controlling the operation of the side airbag device 18 and can be regarded as a control device for handling a side collision.

  Next, the operation of this embodiment will be described.

  In the rear-seat far-side airbag device 10 having the above-described configuration, the airbag 24 is normally housed in the retractable armrest 20 and the seat back 16A of the central seat 16 as shown in FIGS. In this state, the retractable armrest 20 can be stored in the storage recess 22 and the retractable armrest 20 can be taken out from the storage recess 22 to the use position.

  When a side collision to the vehicle is detected or predicted based on a signal from the side collision sensor 50, the ECU 46 determines whether or not the retractable armrest 20 is located at the use position. When it is determined that the retractable armrest 20 is not located at the use position, the ECU 46 operates only the inflators of the left and right side airbag devices 18 without operating the inflators 30. Thereby, the seated occupants of the right seat 12 and the left seat 14 are protected against interference with the interior of the vehicle interior by the side airbag in which the side airbag device 18 is deployed.

  On the other hand, when it is determined that the retractable armrest 20 is located at the use position, the ECU 46 operates the inflators of the left and right side airbag devices 18 and the inflator 30. Thereby, the seated occupants of the right seat 12 and the left seat 14 are protected against interference with the interior of the vehicle interior by the side airbag in which the side airbag device 18 is deployed. Further, in the rear seat far-side airbag device 10, the gas generated by the inflator 30 is supplied to the airbag 24 by operating the inflator 30. As a result, the airbag 24 is inflated between the retractable armrest 20 and the front of the seat back 16A, that is, between the right seat 12 and the left seat 14, while the airbag doors 36 to 38 are deployed by the deployment pressure. ,Be expanded.

  Here, in the far-side airbag device 10 for the rear seat, the front lower end 24C of the airbag 24 is fixed to the retractable armrest 20 located at the use position in the front fixing portion 26, and the rear upper end 24D is rearward. Since the side fixing portion 28 is fixed to the storage recess 22 in the seat back 16A, the tension line TL (see FIG. 5) is placed at a favorable position connecting the front fixing portion 26 and the rear fixing portion 28 to the deployed airbag 24. 2) is formed. For this reason, the deployed airbag 24 is not easily displaced with respect to the load in the vehicle width direction.

  Furthermore, since the airbag 24 is deployed in a state in which a part of the rear end side is held by the pair of side walls 22C of the storage recess 22, it is more difficult to be displaced by the load in the vehicle width direction. That is, when the airbag 24 supports the seated occupant of the right seat 12 and the left seat 14 in the vehicle width direction, the reaction force is effectively supported.

  Therefore, in the far-side airbag device 10 for the rear seat, the airbag 24 firmly receives the seated occupant of the right seat 12 and the left seat 14 and effectively suppresses the movement of the occupant in the vehicle width direction. Can do. Thereby, in the far side airbag device 10 for the rear seat, the airbag 24 suppresses the anti-collision side of the right seat 12 and the left seat 14 from moving inward in the vehicle width direction. Further, the airbag 24 prevents the collision-side seated occupant protected by the side airbag device 18 from moving back inward in the vehicle width direction in the initial stage of the side collision.

  Moreover, in the far-seat airbag device 10 for the rear seat, since the inflator 30 is fixed to the seat back frame 32 in a posture along the vehicle width direction, the airbag 24 is stable against a load in the vehicle width direction. It is unfolded and is less likely to be displaced with respect to the load in the vehicle width direction. Further, since the top wall 24B is positioned along the tension line TL, the airbag 24 is more stably deployed with respect to the load in the width direction, and is less likely to be displaced with respect to the load in the vehicle width direction.

  As a result, in the far-side airbag device 10 for the rear seat, the seats of the right seat 12 and the left seat 14 are more firmly received by the airbag 24, and the movement of the passenger to the inside in the vehicle width direction is more effectively suppressed. can do. That is, in the rear seat far-side airbag device 10, the restraining performance of the seated occupant of the right seat 12 and the left seat 14 by the airbag 24 is improved.

  Next, another embodiment of the present invention will be described. Note that parts and portions that are basically the same as those in the first embodiment or the previous configuration are denoted by the same reference numerals as those in the first embodiment or the previous configuration, and description thereof is omitted.

(Second Embodiment)
FIG. 5 shows a rear-seat far-side airbag device 60 according to the second embodiment in a perspective view corresponding to FIG. As shown in this figure, the rear-seat far-side airbag device 60 according to the first embodiment is provided with an airbag 62 that is deployed in a substantially rectangular shape in a side view instead of the airbag 24. It differs from the rear seat far-side airbag device 10.

  The airbag 62 has an inner cloth 64 as a wall portion that bisects the internal space so as to bridge the front fixing portion 26 to which the front lower end portion 62B is fixed and the rear upper end portion 62C rear fixing portion 28. ing. That is, the inner cloth 64 is configured to span the entire length along the diagonal line (tension line TL) between the pair of left and right side wall portions 62A facing the airbag 62 in the vehicle width direction. The inner cloth 64 is formed with a communication hole 66 that communicates the divided space in the airbag 62. Other configurations in the rear-seat far-side airbag device 60 are the same as the corresponding configurations of the rear-seat far-side airbag device 10 including a portion not shown.

  Therefore, the rear seat far-side airbag device 60 according to the second embodiment also obtains the same effect by the same operation as that of the rear seat far-side airbag device 10 according to the first embodiment. be able to. Further, in the rear-seat far-side airbag device 60, since a deployment portion is further present in front of the inner cloth 64 positioned along the tension line TL in the airbag 62, the vehicle width of the right seat 12 and the left seat 14 is increased. Wide movement limit range.

(Third embodiment)
FIG. 6 shows a rear side far-side airbag device 70 according to the third embodiment in a side view corresponding to FIG. As shown in this figure, the far-seat airbag device 70 for the rear seat includes an airbag 72 that does not have the top wall portion 24B (inner cloth 64) deployed along the tension line TL, instead of the airbag 24. In the point provided, it differs from the far side airbag apparatus 10 for rear seats which concerns on 1st Embodiment.

  The airbag 72 has a pair of left and right side wall portions 72A opposed to each other in the vehicle width direction, and a top wall portion 72B that spans the entire length of the upper edge of the side wall portion 72A above the retractable armrest 20 and the central seat 16. The seat back 16A is deployed and exposed. The top wall portion 72B is in front of the tension line TL connecting the front side fixing portion 26 to which the front lower end portion 72C is fixed and the rear side fixing portion 28 to which the rear upper end portion 72D is fixed in the deployed state of the airbag 72. It is set as the structure located in. Other configurations of the rear-seat far-side airbag device 70 are the same as the corresponding configurations of the rear-seat far-side airbag device 10 including portions not shown.

  Therefore, the rear-seat far-side airbag device 70 according to the third embodiment is basically the same except for the operational effects of the top wall portion 24B (inner cloth 64) being deployed along the tension line TL. In addition, the same effect can be obtained by the same operation as that of the rear-seat far-side airbag device 10 according to the first embodiment. That is, also in the rear seat far-side airbag device 70, the tension line TL is formed on the pair of left and right side wall portions 72A, so that the airbag 72 is not easily displaced with respect to the load in the vehicle width direction. An effect of suppressing movement in the vehicle width direction can be obtained.

(Fourth embodiment)
FIG. 7 shows a rear-seat far-side airbag device 80 according to the fourth embodiment in a side view corresponding to FIG. As shown in this figure, the rear-seat far-side airbag device 80 includes an airbag 84 that bridges the front-side fixing portion 26 and the rear-side fixing portion 28 via a strap 82 instead of the airbag 24. Thus, the rear seat farside airbag apparatus 10 according to the first embodiment is different.

  The airbag 84 has a side view shape similar to that of the airbag 24, and is slightly smaller than the airbag 24. The strap 82 is fixed to the top wall portion 84A of the airbag 84 by sewing or the like, the front end 82A is fixed to the front side fixing portion 26, and the rear end 82B is fixed to the rear side fixing portion 28. Therefore, in this embodiment, the strap 82 corresponds to the wall portion of the present invention. Other configurations in the rear-seat far-side airbag device 80 are the same as the corresponding configurations of the rear-seat far-side airbag device 10 including a portion not shown.

  Therefore, the rear seat far-side airbag device 80 according to the fourth embodiment also obtains the same effect by the same operation as the rear seat far-side airbag device 10 according to the first embodiment. be able to. That is, the airbag in the present invention includes not only a bag portion to be inflated and deployed, but also a non-inflated tension structure provided in the bag portion.

  In the fourth embodiment, the strap 82 includes a portion that connects the front end portion of the airbag 84 and the front fixing portion 26, and a portion that connects the rear end portion of the airbag 84 and the rear fixing portion 28. It may be divided into two parts. In this case, the shape of the airbag 84 is not limited to a configuration that is substantially trapezoidal (the exposed portion is substantially triangular) in side view.

  Further, in each of the above-described embodiments, the ECU 46 shows an example in which the operating condition of the inflator 30 is that the retractable armrest 20 is located at the use position. However, the present invention is not limited to this, for example, the center seat The inflator 30 may be configured to operate on the condition that it is determined that there is no seated person on the central seat 16 based on a signal from a seating sensor for detecting the presence or absence of seating on the center seat 16. In this case, the retractable armrest 20 positioned at the storage position may be moved to the use position by the deployment pressure of the airbag 24 or the like.

  In the above-described embodiment, an example in which the three-seat rear seat 11 Japanese invention is applied is shown, but the present invention is not limited to this, and the rear seat fur is placed between the left and right seats in the two-seat rear seat. You may apply the side airbag apparatus 10 grade | etc.,.

It is a perspective view showing typically the operation state of the far seat air bag device for backseats concerning a 1st embodiment of the present invention. It is a sectional side view which shows typically the operating state of the far side airbag apparatus for rear seats concerning the 1st Embodiment of this invention. It is a sectional side view which shows typically the non-operation state of the far side airbag apparatus for rear seats concerning the 1st Embodiment of this invention. 1 is a perspective view showing a rear seat, to which a rear seat far-side airbag device according to a first embodiment of the present invention is applied. It is a perspective view which shows typically the operation state of the far side airbag apparatus for rear seats which concerns on the 2nd Embodiment of this invention. It is a sectional side view which shows typically the operating state of the far side airbag apparatus for rear seats which concerns on the 3rd Embodiment of this invention. It is a sectional side view which shows typically the operation state of the far side airbag apparatus for rear seats which concerns on the 4th Embodiment of this invention.

Explanation of symbols

10 Far-side airbag device for rear seats (inter-seat airbag device for vehicles)
11 Rear seat (rear seat)
12 Right seat (left and right seats)
14 Left seat (left and right seats)
16 Central seat (central seat)
16A Seat back 20 Retractable armrest (armrest)
22 Storage recess 24 Airbag 24A Side wall 24B Top wall (wall)
26 Front side fixing part 28 Rear side fixing part 30 Inflator 32 Seat back frame (vehicle body)
60/70/80 Far-seat airbag device for rear seat 62/72/84 Airbag 62A / 72A Side wall 64 Inner cloth (wall)
82 Strap (wall)

Claims (4)

A storage position provided between the left and right seats integrally formed side by side in the vehicle width direction and housed in a storage recess formed in the seat back, and a use position extending in the vehicle front-rear direction between the seats Retractable armrest that can take
An airbag that is provided in the armrest and the seat back, and is deployed on the upper side of the armrest located at the use position by receiving gas supply and on the front side of the storage recess;
A front side fixing portion that fixes the vehicle front end portion of the airbag to a portion located on the vehicle front end side at the use position in the armrest;
A rear-side fixing portion that fixes a vehicle rear end portion of the airbag to an upper end side of the storage recess in the seat back;
A vehicle-to-seat airbag apparatus comprising:   The space between the vehicle seats according to claim 1, wherein an inflator provided in the airbag and configured to supply gas to the airbag is fixed to the vehicle body in a posture along a vehicle width direction at a lower portion in the seat back. Airbag device.   The airbag has a wall portion that, in a deployed state, connects a pair of side wall portions facing each other in the vehicle width direction and is linearly stretched between a fixing portion to the armrest and a fixing portion to the seat back. The inter-seat airbag device for a vehicle according to claim 1 or 2. When the armrest is located in the retracted position, it is applied to a rear seat where the space between the left and right seats is a central seat,
Any one of claims 1 to 3, wherein gas is allowed to be supplied to the airbag when the armrest is in a use position or when there is no seated occupant in the central seat. The inter-seat airbag device for a vehicle according to claim 1.

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