JP2019108041A - Rear seat far side airbag device - Google Patents

Abstract

To improve occupant restraint performance with a far side airbag.SOLUTION: A vehicle seat 12 to which a rear seat far side airbag device 10 is applied includes: a seat cushion 14 disposed with the vehicle width direction as the longitudinal direction and having seat surfaces formed on both left and right sides in the vehicle width direction; and an inflator 34 that generates gas. Further, a far side airbag 32, which is inflated and deployed upward by supplying gas, is provided at the approximate center of the seat cushion 14 in the vehicle width direction. Additionally, straps 36A, 36B, 36C, and 36D are respectively connected on the upper end of the far side airbag 32, in the inflated and deployed state in the vehicle vertical direction, and a seat cushion frame 20 positioned below the buttocks L of an occupant P seated on the seat surfaces formed on both sides in the vehicle width direction of the far side airbag 32 and on both sides in the vehicle width direction of the seat cushion 14.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rear seat far side airbag device.

  In the rear seat far side airbag device described in Patent Document 1 below, the rear tray is disposed on the rear side of the rear seat seat bag, and a recess is formed at the center in the vehicle width direction of the rear tray. The rear seat central airbag (far side airbag) is accommodated in the recess, and when the rear seat central airbag inflates and deploys, the seat surface from the seat back of the rear seat at the central position of the left and right seats of the rear seat It is configured to form a wall-like body. As a result, a seated occupant who is about to move toward the center of the rear seat in the vehicle width direction due to the impact of a side collision of the vehicle is restrained by the rear seat central airbag.

JP 2008-100604 A

  According to the above-mentioned prior art, the rear seat central airbag is pushed down by the weight of the seated occupant who tries to move the rear seat to the center side in the vehicle width direction due to the impact of the side collision of the vehicle, and the occupant may not be restrained sufficiently. is there.

  An object of the present invention is, in consideration of the above-mentioned fact, to obtain a rear-seat far-side airbag device capable of exhibiting an occupant restraining performance by the far-side airbag.

  A rear-seat far-side airbag device according to the present invention according to the first aspect of the present invention includes a seat for a seat which is disposed with the vehicle width direction as a longitudinal direction and seat surfaces are formed on both left and right sides in the vehicle width direction; An inflator that is provided on the vehicle seat and generates gas when activated, and an inflator that is provided approximately at the center in the vehicle width direction of the seat cushion and that is inflated and deployed above the seat by being supplied with the gas A seat positioned at a bag, an upper end portion in the vehicle vertical direction of the fur-side airbag in an inflated and deployed state, both sides in the vehicle width direction of the far-side airbag, and a lower side of the buttocks of an occupant seated on the seat. A cushion frame and at least one strap for connecting the cushion frame to each other.

  In the first aspect of the present invention, for example, when a side collision of the vehicle is detected, the inflator operates to generate gas, and the gas is supplied to the far-side airbag provided approximately at the center in the vehicle width direction of the seat cushion. Supplied. As a result, the far side airbag inflates and deploys to the seat upper side.

  The upper end of the far side airbag in the vehicle vertical direction and at least one seat cushion frame positioned on both sides in the vehicle width direction of the far side airbag and below the buttocks of the occupant seated on the seat surface Each is connected by a strap. As a result, the movement of the far side airbag from the position in the inflated and deployed state in the vehicle width direction is suppressed, and the side fall of the far side airbag is suppressed. As a result, the far-side airbag can sufficiently restrain an occupant moving toward the center in the vehicle width direction.

  Furthermore, when the occupant seated on the seat surface of the vehicle seat moves toward the far side airbag due to the impact of the side collision, the buttocks and thighs of the occupant hit the straps. A tensile force is applied to the upper end portion of the far side airbag from the strap toward the outside in the vehicle width direction and toward the occupant (in the direction opposite to the movement direction of the occupant). As a result, the occupant restraining performance by the far side airbag is further improved.

  According to the first aspect of the present invention, when the occupant is restrained by the far side airbag, it is possible to suppress the sideways fall of the far side airbag and to exhibit the occupant's restraint performance by the far side airbag. In addition, when the occupant seated on the seat surface of the vehicle seat moves toward the far side airbag due to the impact of the side collision, the superior effect of further improving the occupant restraint performance by the far side airbag can be obtained.

FIG. 2 is a front view showing a vehicle seat provided with a rear seat far side airbag device according to the present embodiment in a state where the rear seat far side airbag device is activated. FIG. 6 is a side view of the vehicle seat in a state in which the rear-seat far-side airbag device shown in FIG. 1 is activated as viewed from the left side in the seat width direction. (A) is a plan view of the vehicle seat in a state before the rear-seat far-side airbag device shown in FIG. 1 is activated, and (B) is a front view of the rear-seat far-side airbag device operated FIG. 3 is a partial enlarged cross-sectional view partially showing a cross section taken along line 3-3 of FIG. 2 in the state of FIG. (A) is a partial front view showing a seat on the right side in the seat width direction of the vehicle seat in a state where the rear seat far side airbag device shown in FIG. 1 is activated, and (B) is shown in FIG. In the rear-seat far-side airbag device, a partial front view corresponding to FIG. 4A showing a state in which the occupant sitting in the seat on the right side in the seat width direction of the vehicle seat moves toward the far-side airbag due to a side collision impact. FIG. (A) is a partial front view corresponding to FIG. 4 (A) which shows the vehicle seat provided with the backseat far-side airbag apparatus as a comparative example in the state which the backseat far-side airbag apparatus operated. (B), in the rear-seat far-side airbag device shown in FIG. 5 (A), the occupant sitting in the seat on the right in the seat width direction of the vehicle seat moves toward the far-side airbag by the impact of a side collision It is a partial front view corresponding to FIG. 4 (B) which shows the state which was carried out.

  Hereinafter, the rear seat far side airbag device 10 according to the embodiment of the present invention will be described using FIGS. 1 to 5. In addition, the arrow FR suitably shown in these figures has shown the vehicle front side, the arrow UP has shown the vehicle upper side, and arrow RH has shown the vehicle right side. In the following description, when simply using front and rear, upper and lower, and left and right directions, unless otherwise noted, the left and the right in the front and rear directions of the vehicle, up and down in the vehicle vertical direction, and the traveling direction are indicated. Further, the seat longitudinal direction of the vehicle seat 12 coincides with the vehicle longitudinal direction, and the seat width direction of the vehicle seat 12 coincides with the vehicle lateral direction. In the present embodiment, the direction of the vehicle and the direction of the seat are the same unless otherwise noted.

(overall structure)
The rear-seat fur-side airbag device 10 according to the present embodiment is provided on a vehicle seat 12 and includes a far-side airbag 32 (hereinafter, also simply referred to as "airbag 32"), an inflator 34, and a strap 36. The main part is composed of

(Vehicle seat 12)
The vehicle seat 12 is a rear seat of the vehicle, and is supported by the seat cushion 14 supporting the buttocks L and the thigh D of the seated occupant and supported by the rear end of the seat cushion 14 in a tiltable manner. And a headrest 18 provided at the upper end of the seatback 16 to support the head H of the occupant (see FIG. 1).

  Further, the above-described seat cushion 14 is constituted by a seat cushion frame 20 (hereinafter simply referred to as "frame 20") which is a framework member, and a seat cushion pad 22 supported by the frame 20. The surface of the cushion pad 22 is covered by a skin material (not shown). As shown in FIG. 3A, the seat cushion 14 is integrally formed with a right seating surface 14A, a central seating surface 14B, and a left seating surface 14C in this order from the right side to the left side in the vehicle width direction. , Three people can be seated. The right side seating surface 14A and the left side seating surface 14C correspond to "seating surfaces formed on both left and right sides in the vehicle width direction" in the present invention.

  As an example, the frame 20 is made of metal such as aluminum, has a substantially rectangular frame shape in plan view, and has the vehicle width direction as the longitudinal direction. Moreover, it has the leg part 24 extended to the vehicle lower side from the four corners of this flame | frame 20, This leg part 24 is being fixed to the floor panel which is not shown in figure (refer FIG. 2).

  Further, as shown in FIG. 3A, the upper surface of the seat cushion 14 is provided with a first cleavage portion 26 which is broken and cleaved by the action of the inflation pressure when the air bag 32 described later is inflated. It is done. Furthermore, the upper surface of the seat cushion 14 is broken by the application of pressure from the strap 36 when the strap 36 described later is pulled upward as the airbag 32 inflates upward. A second cleavage portion 28 to be cleaved is formed. Specifically, the first cleavage portion 26 is formed at a substantially central portion in the vehicle width direction of the seat cushion 14 along the longitudinal direction of the vehicle. In addition, the second cleavage portion 28 includes a pair of front cleavage portions 28A and 28B extending substantially in the vehicle width direction from the portion on the vehicle front side from the center in the vehicle longitudinal direction of the first cleavage portion 26; It is comprised by a pair of back cleavage parts 28C and 28D which extend toward a vehicle width direction both sides from the part by the side of the vehicles back from the center of the vehicles longitudinal direction of cleavage part 26. In addition, what is necessary is just to set the 2nd cleavage part 28 suitably with the fixed position of the strap 36 mentioned later.

  Supplementally, in each drawing, a dummy (doll) for a collision test is shown seated on the right side seating surface 14A of the seat cushion 14 of the vehicle seat 12 as a model of an occupant to be protected. The dummy is seated in a standard seating posture determined by the collision test method, and the vehicle seat 12 is located at a reference setting position corresponding to the seating posture. Hereinafter, the dummy is regarded as an occupant and is referred to as “occupant P”.

(Rear seat far side airbag device 10)
The rear-seat far-side airbag device 10 is a device for protecting an occupant on the opposite side to the collision side at the time of a side collision of the vehicle. As described above, the rear-seat far-side airbag device 10 supplies gas to the inside of the airbag 32 and the airbag 32 disposed in the vehicle width direction central portion (central seating surface 14B) of the seat cushion 14. An inflator 34 and a strap 36 bridged between the air bag 32 and the frame 20 are configured as main parts. Hereinafter, each component will be described.

  (Far-side airbag 32)

  As shown in FIG. 3 (B), the airbag 32 is modularized (unitized) with the inflator 34 and the strap 36, and the opening is directed to the vehicle upper side in the state of being folded with the strap 36. It is housed in a box-like module case 38. As one example, the module case 38 is formed of a metal plate or the like, and is in the form of a box without an upper surface. Further, in a posture in which the longitudinal direction substantially coincides with the longitudinal direction of the vehicle, it is fixed directly or via a bracket or the like to the upper side of the frame 20 located on the lower side of the central seating surface 14B. The module case 38 may be fixed to the lower side of the frame 20 located on the vehicle lower side of the central seating surface 14B.

  The air bag 32 inflates and deploys from the approximate center in the vehicle width direction of the seat cushion 14 to the vehicle upper side (seat upper side) by the pressure of the gas generated from the inflator 34 (see FIG. 1). Note that the front and rear, upper and lower directions of the airbag 32 described in the following description indicate directions in a state in which the airbag 32 inflates and deploys, unless otherwise specified. I do.

  The air bag 32 is formed in a bag shape by sewing one or a plurality of base cloths formed by cutting a nylon or polyester cloth material, for example. The method of manufacturing the air bag 32 is not limited to sewing, and may be manufactured by, for example, a bag weaving method (so-called OPW method) using an automatic loom.

  Further, as shown in FIG. 2, the airbag 32 is formed to have a substantially rectangular shape elongated along the vertical direction of the vehicle when the inflated and deployed state is viewed along the vehicle width direction. Through the head H, the shoulder S and the buttock L of P, the thigh D is formed in a size that can be restrained.

  (Inflator 34)

  The inflator 34 is a so-called cylinder type inflator as shown in FIG. 1 and FIG. 3B, and is accommodated at the lower end portion inside the air bag 32. The inflator 34 is formed in a cylindrical shape, and is disposed in a state in which the axial direction (longitudinal direction) is along the vehicle longitudinal direction of the seat cushion 14. As an example, a stud bolt (not shown) protrudes from the outer peripheral portion of the inflator 34 toward the lower side of the vehicle, and this stud bolt is used for the base cloth of the air bag 32 and the bottom surface of the module case 38 and the frame 20 (or It penetrates a bracket etc., and the nut which is not illustrated on the tip side is screwed together. Thereby, the inflator 34 is fixed to the frame 20 which constitutes the vehicle seat 12 together with the air bag 32.

  As shown in FIG. 1, the above-described inflator 34 is electrically connected to an ECU 40 mounted on a vehicle (in a broad sense, an element to be grasped as a “control unit”). The ECU 40 is electrically connected to a side collision sensor 42 for detecting a side collision of the vehicle and a seating position sensor 44 for sensing whether the occupant is sitting on the central seating surface 14B of the seat cushion 14 or not. There is. The ECU 40, the side collision sensor 42, and the seating position sensor 44 are components of the rear seat far side airbag device 10.

  When a signal corresponding to the occurrence of a side collision in the vehicle is input from the side collision sensor 42, the ECU 40 receives a signal from the seating position sensor 44 that the occupant is not seated on the central seating surface 14B. Is operated, the inflator 34 is operated.

  (Strap 36)

  As shown in FIGS. 1 and 2, in the present embodiment, the upper end portion of the airbag 32 in the vehicle vertical direction, both sides of the airbag 32 in the vehicle width direction, the right seating surface 14A and the left seating surface 14C When P is seated, the frame 20 located below the buttocks L of the occupant P is connected by a plurality of straps 36. Specifically, from the pair of straps 36A and 36B supporting the front side of the airbag 32 in the vehicle longitudinal direction and the pair of straps 36C and 36D supporting the rear side of the airbag 32 in the vehicle longitudinal direction It is configured. In addition, the straps 36A, 36B, 36C, 36D are each formed in a long strip shape from a flexible and hard-to-stretch material.

  As shown in FIGS. 1 and 2, the strap 36A is disposed along the right side in the vehicle width direction of the airbag 32 and the front side in the vehicle longitudinal direction. The strap 36A is fixed to the left side surface in the vehicle width direction and the upper end portion beyond the upper end (apex) of the airbag 32 at one end portion in the longitudinal direction. In addition, the other end of the strap 36A is fixed to the front end of the frame 20 located on the lower side of the right side seating surface 14A of the seat cushion 14 in the vehicle longitudinal direction. On the other hand, the strap 36B is disposed along the left side in the vehicle width direction of the airbag 32 and the front side in the vehicle longitudinal direction. The strap 36B is fixed to the right side surface in the vehicle width direction and the upper end portion beyond the upper end (apex) of the airbag 32 at one end in the longitudinal direction. The other end of the strap 36B is fixed to the front end of the frame 20 located below the left seating surface 14C of the seat cushion 14 in the vehicle longitudinal direction. That is, the front side of the air bag 32 in the vehicle longitudinal direction is supported by the pair of straps 36A and 36B.

  Further, as shown in FIGS. 1 and 2, the strap 36C is disposed along the right side in the vehicle width direction of the airbag 32 and the rear side in the vehicle longitudinal direction. One end of the strap 36C in the longitudinal direction is fixed to the left side surface and the upper end in the vehicle width direction beyond the upper end (apex) of the airbag 32. Further, the other end of the strap 36C is fixed to the rear end of the frame 20 located below the right side seating surface 14A of the seat cushion 14 in the vehicle longitudinal direction. On the other hand, the strap 36D is disposed along the left side in the vehicle width direction of the airbag 32 and the rear side in the vehicle longitudinal direction. In the strap 36D, one end in the longitudinal direction is fixed to the right side surface and the upper end in the vehicle width direction beyond the upper end (apex) of the airbag 32. Further, the other end of the strap 36D is fixed to the rear end of the frame 20 located below the left seating surface 14C of the seat cushion 14 in the vehicle longitudinal direction. That is, the rear side of the air bag 32 in the vehicle longitudinal direction is supported by the pair of straps 36C and 36D.

  As described above, by connecting the upper end portion of the airbag 32 and the frame 20 of the seat cushion 14 positioned on both sides in the vehicle width direction of the airbag 32 by the straps 36A, 36B, 36C, and 36D, Movement in the vehicle width direction is restricted.

  Further, as one example, one ends of the straps 36A, 36B, 36C, 36D are each fixed to the airbag 32 by sewing. Further, the other ends of the straps 36A, 36B, 36C, 36D are respectively fastened to the frame 20 by bolts and nuts (not shown). In addition, the fixing method to the airbag 32 of the strap 36 and the flame | frame 20 can be suitably changed not only in the above.

  As shown in FIG. 3A, in a state before the air bag 32 inflates and deploys, the air bag 32 and the strap 36 are covered with an unshown skin of the seat cushion 14. Then, as shown in FIG. 1, in the inflated and deployed state of the air bag 32, the air bag 32 breaks the first cleavage portion 26 and protrudes upward of the seat cushion 14, and the right seating surface 14A and the left seating surface 14C. And so as to divide in the longitudinal direction of the vehicle. On the other hand, the strap 36 breaks the second cleavage portion 28, and the strap 36 is pulled out to the upper side of the seat cushion 14. Specifically, the lower end in the longitudinal direction of the strap 36 is disposed inside the seat cushion 14, and the strap 36 is drawn to the upper side of the seat cushion 14 from the middle to the upper end in the longitudinal direction. Further, from the middle to the upper end in the longitudinal direction of the strap 36, the vehicle width at the buttock L of the occupant P in a front view when the occupant P sits on the right seat 14A or the left seat 14C of the seat cushion 14 It is set so as to form a substantially straight line from the vicinity of the direction inner side surface to the upper end portion of the air bag 32.

(Action and effect)
Next, the operation and effects of the present embodiment will be described.

  In the rear-seat far-side airbag device 10 configured as described above, the ECU 40 detects a side collision of the vehicle based on the signal from the side collision sensor 42, and on the central seating surface 14B based on the signal from the seating position sensor 44. When it is detected that the occupant is not seated, the ECU operates the inflator. Then, the gas ejected from the inflator 34 is supplied into the air bag 32, and the air bag 32 inflates and deploys from the substantially central portion of the central seating surface 14B of the seat cushion 14 to the seat upper side. Then, the air bag 32 is erected so as to divide the right side seating surface 14A and the left side seating surface 14C along the longitudinal direction of the vehicle. Thus, the air bag 32 faces the thigh D from the inside in the vehicle width direction via the head H, the shoulder S and the heel L of the occupant P.

  Here, FIG. 5A shows a rear-seat fur-side airbag device 70 that does not have the strap 36 described above. Moreover, arrow W shown to FIG. 5 (B) has shown direction of the collision load input from the vehicle width direction left side with respect to the sheet | seat 72 for vehicles. Further, the seating position of the occupant P indicated by a two-dot chain line in FIG. 5B indicates the seating position of the occupant P before the collision load due to the side collision is input. Further, the seating position of the occupant P indicated by a solid line in FIG. 5B indicates the seating position in a state where the body of the occupant P has moved to the center in the vehicle width direction after the collision load due to the side collision is input. . Further, an arrow Q shown in FIG. 5B indicates the direction of the load input from the body of the occupant P to the air bag 74. As shown in this figure, when a collision load is input to the vehicle seat 72 from the left side in the vehicle width direction, for example, the body of the occupant P seated on the right side in the vehicle width direction of the air bag 74 And move from the seating position before the collision to the center in the vehicle width direction. Then, a load to the left in the vehicle width direction is input to the air bag 74 from the body of the occupant P, and the air bag 74 falls sideways.

  On the other hand, in the present embodiment, as shown in FIGS. 1 and 2, at the upper end portion of the airbag 32 in the vehicle vertical direction, one end portion in the longitudinal direction of the straps 36A, 36B, 36C, 36D is Each is fixed. On the other hand, when the occupant P is seated on the seating surfaces (right seating surface 14A and left seating surface 14C) disposed on both sides of the airbag 32 in the vehicle width direction, the other end is below the heel portion L of the occupant P. It is each fixed to the flame | frame 20 located in the side. Thus, the movement of the airbag 32 in the vehicle width direction is restricted, and the sideways fall of the airbag 32 is suppressed. As a result, the restraint performance of the occupant P by the airbag 32 can be improved.

  In addition, as shown in FIG. 4B, when the occupant P seated on the right side seating surface 14A or the left side seating surface 14C of the vehicle seat 12 moves toward the airbag 32 due to a side collision, the buttocks L of the occupant And the thigh D strike the strap 36. Then, as shown by the arrow R in FIG. 4B, the upper end portion of the airbag 32 faces from the strap 36 outward in the vehicle width direction and toward the occupant (in the direction opposite to the movement direction of the occupant) A tensile force is applied. As a result, the occupant restraining performance by the air bag 32 can be further improved.

  Furthermore, as shown in FIG. 1 and FIG. 2, in the present embodiment, the straps 36A, 36B, 36C, 36D are all disposed along one of the side surfaces of the airbag 32 in the vehicle width direction. The end fixed to the air bag 32 is the upper end of the side opposite to the side where the straps 36A, 36B, 36C, 36D are disposed beyond the upper end (apex) of the air bag 32. It is fixed to As a result, the restraint force of the occupant P by the air bag 32 is increased.

  In order to supplement the effect, for example, the case where the buttocks L of the occupant P seated on the right side seating surface 14A of the vehicle seat 12 hits the strap 36A due to the impact of the side collision will be described. As shown in FIG. 1, the strap 36A is disposed along the right side in the vehicle width direction of the airbag 32 and along the front side in the vehicle longitudinal direction, and one end in the longitudinal direction is the upper end of the airbag 32. It is fixed to the left side and the upper end in the vehicle width direction beyond the (apex). Therefore, when the heel portion L of the occupant P hits the strap 36A from the right side in the vehicle width direction, the component in the vehicle upward direction and the component in the vehicle width direction at the one end of the strap 36A fixed to the airbag 32 As a result, a tensile force is generated on the right side in the vehicle width direction and in the upper direction of the vehicle (see an arrow R shown in FIG. 4B). On the other hand, for example, when one end of the strap 36A is fixed to the upper end of the right side surface of the airbag 32 in the vehicle width direction, the component of the vehicle downward and the vehicle width are one end of the strap 36A. The right component in the direction is combined to provide a tensile force to the right in the vehicle width direction and the downward direction of the vehicle, so the downward component of the vehicle suppresses the deployment of the airbag 32 to the upper side of the vehicle. Ru.

  That is, by fixing one end portion in the longitudinal direction of the strap 36A to the left side surface in the vehicle width direction beyond the upper end (apex) of the airbag 32, compared with the configuration fixed to the right side surface in the vehicle width direction, A tensile force can be generated at the strap 36A that does not prevent the deployment of the air bag 32 and increases the reaction force that the occupant P receives from the air bag 32. Thus, the restraint force of the occupant P by the air bag 32 can be increased.

  Further, in the present embodiment, the front side in the vehicle longitudinal direction of the airbag 32 is supported by the pair of straps 36A and 36B, and the rear side in the vehicle longitudinal direction of the airbag 32 is supported by the pair of straps 36C and 36D. . As a result, both sides of the airbag 32 in the vehicle longitudinal direction are stably supported, so the straps 36A, 36B, 36C, and 36D favorably maintain the inflated position of the airbag 32.

  Furthermore, in the present embodiment, the air bag 32 is provided substantially at the center in the vehicle width direction of the seat cushion 14 and inflates and deploys from the upper surface of the seat cushion to the vehicle upper side. For this reason, the restraining force of the buttocks L of the occupant P is improved as compared with the configuration in which the far-side airbag is provided on the seat back 16 of the vehicle seat 12. As a result, the impact of the side collision of the vehicle causes the buttocks L of the occupant P to move largely, and interference with the unillustrated seat belt of the vehicle seat 12 is suppressed. As a result, the passenger protection performance at the time of a side collision of the vehicle is improved.

  (Supplementary explanation of the present embodiment)

  In the present embodiment, the air bag 32 and the frame 20 of the seat cushion 14 are connected by four straps 36A, 36B, 36C, 36D, but the present invention is not limited to this. For example, a pair of straps 36A and 36B for supporting the front side in the vehicle longitudinal direction of the air bag 32 may be one strap, and a pair of straps 36C for supporting the rear side in the vehicle longitudinal direction of the air bag 32; The 36D may be configured as a single strap, in which two straps can support the airbag 32 on both sides in the vehicle longitudinal direction. Further, in this configuration, as an example, both ends in the lengthwise direction of each strap are fixed to the frame 20 of the seat cushion 14 and the center in the lengthwise direction is fixed to the upper end of the airbag 32. .

  Further, the airbag 32 may be supported by a single strap. As an example, both ends in the longitudinal direction of the strap are fixed to both ends in the vehicle width direction of the frame 20 of the seat cushion 14 and to the central portion in the longitudinal direction of the vehicle, and the central portion in the longitudinal direction of the strap is A configuration is conceivable in which the upper end portion of the airbag 32 and the central portion in the longitudinal direction of the vehicle are fixed. Also by the said structure, it is suppressed that the said airbag 32 is moved to the vehicle width direction at the time of inflation deployment of the airbag 32. FIG.

  Alternatively, one end of one strap in the longitudinal direction is fixed to the front end of the frame 20 of the seat cushion 14 in the vehicle longitudinal direction and the lower side of the right seat 14A, and the other end of the strap is the seat cushion 14 The rear end of the frame 20 in the longitudinal direction of the vehicle and the lower side of the left seating surface 14C may be fixed, and the central portion in the lengthwise direction of the strap may be fixed to the upper end of the airbag 32. That is, a single strap may be disposed to cross the seat cushion 14 while inclining with respect to the longitudinal direction of the vehicle in plan view. Also by the said structure, it is suppressed that the said airbag 32 is moved to the vehicle width direction at the time of inflation deployment of the airbag 32. FIG.

  In the present embodiment, the configuration has been described in which the rear-seat far-side airbag device 10 is applied to a three-seat vehicle seat 12 having a seat surface at the center on both the left and right sides in the vehicle width direction. Is not limited to this. For example, the present invention can be applied to a two-seat vehicle seat that does not have a seat at the center in the vehicle width direction.

10 Rear Seat Far Side Airbag Device 12 Vehicle Seat 14 Seat Cushion 34 Inflator 32 Far Side Airbag 14A Right Seat (Seat)
14B Left Seat (seat)
20 seat cushion frame 36 strap P passenger

Claims (1)

A vehicle seat including a seat cushion which is disposed with the vehicle width direction as a longitudinal direction and has seat surfaces formed on both left and right sides in the vehicle width direction;
An inflator that is provided on the vehicle seat and generates gas by being activated;
A far-side airbag provided substantially at the center in the vehicle width direction of the seat cushion, and inflated and deployed upward by the supply of the gas.
A seat cushion frame positioned on the vehicle upper end portion of the far side airbag in the inflated and deployed state, and on both sides of the far side airbag in the vehicle width direction and below the buttocks of an occupant seated on the seat surface; , At least one strap connecting each,
Rear-seat far-side airbag device with a.