KR102408036B1 - Airbag apparatus - Google Patents

Abstract

An object of the present invention is to provide an airbag device capable of reliably restraining an occupant regardless of the occupant's posture in the seat. An airbag device equipped on a vehicle seat having a seat cushion forming a seat surface and a seatback forming a backrest, comprising: an inflator for generating inflation gas; be prepared The airbag includes a pair of left and right side chambers deployed from the side of the seatback toward the front and an upper chamber deployed above the head of the occupant. The airbag is rolled in a direction intersecting the longitudinal direction in a flattened state before being accommodated or compressed into a folded long rod shape. A folded portion is formed by folding, including at least a portion corresponding to the upper chamber of the long rod-shaped airbag, and the folded portion is accommodated above the seatback.

Description

Airbag device {AIRBAG APPARATUS}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an airbag device equipped on a seat of a vehicle. In particular, it relates to an airbag device capable of reliably restraining an occupant regardless of the occupant's posture sitting in a seat.

It is well known that one or a plurality of airbags are installed in a vehicle to protect occupants in the event of a vehicle breakdown. Airbags are, for example, so-called driver's airbags that inflate near the center of the steering wheel to protect the driver, and a curtain that deploys from the inside of the window of the vehicle downward to protect the occupants in the event of a lateral impact or rollover or rollover accident. There are various types of airbags, such as side airbags deployed between an occupant and a side panel in order to protect occupants in the event of an impact in the lateral direction of the vehicle.

In recent years, it is assumed that passengers take various sitting postures, such as a relaxed posture by reclining the seat greatly with advances in vehicle automatic driving technology, and it is necessary to properly protect the occupants in such a situation.

However, since a well-known side airbag device mounted on a vehicle seat deploys an airbag from one or both of the left and right sides of the seat, it is difficult to properly protect occupants in various postures.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an airbag device capable of reliably restraining an occupant regardless of the occupant's posture.

Means for solving the above problems and their effects will be described below. In addition, in the present invention, when the passenger sits in the seat in the direction of travel in the normal posture, the direction the passenger is facing is 'front' and the opposite direction is 'rear', and when pointing to the coordinate axis, the It is said In addition, when a passenger sits in a seat in a regular posture, the right side of the passenger is referred to as 'right direction' and the left side of the passenger is referred to as 'left direction', and when pointing to the coordinate axis, it is referred to as 'left and right direction'. In addition, when a passenger is seated in a seat in a regular posture, the direction of the head of the passenger is referred to as 'upward' and the direction of the passenger's lumbar region is referred to as 'downward', It is said

In order to achieve the above object, the present invention provides an airbag device equipped on a vehicle seat having a seat cushion forming a seat surface and a seatback forming a backrest, an inflator generating an inflation gas, and at least the inflator accommodated in the seatback. and an airbag deployed by the inflation gas emitted from the airbag. The airbag includes a pair of left and right side chambers deployed from the side of the seatback toward the front, and an upper chamber deployed above the head of the occupant. The airbag is rolled in a direction crossing the longitudinal direction from an unfolded state in a planar shape before being accommodated or compressed into a folded long rod shape. And a folded portion is formed by folding including a portion corresponding to the upper chamber of the long rod-shaped airbag, and the folded portion is accommodated above the seatback. In addition, the 'left and right pair' side chambers do not necessarily have to be formed in a symmetrical shape, but may be formed in an asymmetrical shape.

Here, it is stated that 'a fold is formed by folding including a place corresponding to the upper chamber of the long rod-shaped airbag'. It is intended not to exclude inclusion.

As in the present invention, by including a pair of left and right side chambers that deploy from the side of the seatback toward the front, and an upper chamber that deploys above the head of the occupant, the airbag is deployed in a dome shape and is seated on the seat. It covers the entire upper part from the side of the passenger. As a result, at least the movement of the occupant in the left-right direction, upward, and obliquely upward can be reliably restrained, and it becomes possible to properly protect the occupant from the head to the waist.

In addition, by folding and accommodating the portion corresponding to the long rod-shaped upper chamber of the airbag, the deployment of the folded portion is slightly delayed. That is, the non-folding side chamber is deployed first, and the occupant's lateral movement is quickly restrained. In addition, by folding the part corresponding to the upper chamber, an airbag with sufficient capacity to cover the head of the occupant can be secured above the seatback.

It is preferable that the folding part is deployed so as to cover the upper part of the head of the passenger over the headrest of the vehicle seat.

By deploying the folding portion (upper chamber) over the headrest to cover the top of the passenger's head, the possibility of inflicting damage to the passenger's head can be significantly reduced. For example, when the folded portion is deployed from the front of the headrest, the airbag directly hits the head of the occupant, and there is a risk of head injury and/or neck injury.

When viewed from the rear of the seatback, the folded portion may be formed to be substantially symmetrical left and right.

By folding the airbag symmetrically, it becomes possible to apply the airbag device according to the present invention universally to various seats without being aware of the far side and the near side of the vehicle seat.

When viewed from the rear of the seatback, the folding portion may be formed into an omega (Ω) shape or an inverted omega shape (reverse omega shape). The omega shape or the inverted omega shape will be described in detail with reference to the drawings during the embodiment, which will be briefly described as follows. The airbag compressed in the shape of a rod is disposed approximately along the edge (edge) (left edge, upper edge, accidental part) of the seat back so as to reach the other side from one side of the seat back through the top. At that time, when what extends from the left-right end of the upper portion of the seatback toward the center in the left-right direction is folded back and extended toward the end direction (outward) again, the first folded portion near the center and the first folded A shape having a second folded portion extending from the left and right direction and folded back toward the center near an end portion of the upper portion of the seatback is an omega shape or an inverted omega shape. In addition, the shape in which the first folded part is positioned lower than the second folded part is an omega shape, and the shape in which the first folded part is positioned above the second folded part is an inverted omega shape.

By molding the folding part into an omega shape, when the airbag is deployed, the force of the folding part to deploy upward becomes strong, and even when the headrest is relatively large, it is easy for the airbag (upper chamber) to climb over the headrest and protrude forward. lose

On the other hand, when the airbag is deployed by forming the folding part into an inverted omega shape, the folding part easily deploys in the left-right width direction, and it becomes possible to quickly restrain the movement of the passenger's head in the left-right direction.

When viewed from the rear of the seatback, the folding portion may be formed into an M-shape. The M-shape will be described in detail with reference to the drawings among the embodiments, which will be briefly described as follows. The airbag compressed in the shape of a rod is disposed approximately along the edge of the seatback (left edge, upper edge, and accidental part) so as to reach the other side from one side of the seatback through the top. And a third folded portion extending upward from the left and right ends of the upper portion of the seatback is folded back toward the center or downward, and a fourth folded portion extending downward from the third folded portion and folded back near the center. The shape to have the folded portion is an M-shape.

By forming the folds into an M shape, when the airbag is deployed, the folds become easier to deploy in the left-right width direction, and the movement of the head of the occupant in the left-right direction can be quickly restrained.

When viewed from the rear of the seatback, the folded portion may be formed to be left and right asymmetrical. For example, the foldable portion may be formed into an S-shape or a Z-shape when viewed from the rear of the seatback. The S-shape and the Z-shape will be described in detail with reference to the drawings during the embodiment, which will be briefly described as follows. The airbag compressed in the shape of a rod is disposed approximately along the edge of the seatback (left edge, upper edge, and accidental part) so as to reach the other side from one side of the seatback through the top. And the first end of the seatback is folded back so that the rod-shaped airbag extending from one end (first end) in the left-right direction toward the other end (second end) is rotated toward the first end in the vicinity of the second end. S-shaped and Z-shaped to have a fifth foldable portion and a sixth foldable portion that extends from the fifth foldable portion and is folded back so as to extend from the first end toward the second end again. Also, in the S-shape and the Z-shape, the first end and the second end are opposite to each other.

By forming the folding part asymmetrically like an S-shape or a Z-shape, deployment on the left and right side of the seatback is accelerated and deployment on the other side is delayed. By doing so, it is possible to adequately protect the occupants in the event of a side collision. That is, by using the airbags having different folding directions (S-shape or Z-shape) according to the near side and the far side, it becomes possible to properly protect the occupants in the event of a side collision.

The upper chamber may be configured to deploy from near the rear upper end of the seatback.

Since the upper chamber deploys from near the trailing edge of the top of the seatback so that the upper chamber climbs over the headrest and covers the occupant's head forward, it is possible to avoid direct impact of the airbag on the occupant's head. can

The inflation gas discharged from the inflator may be configured to flow from the side chamber to the upper chamber. In this case, the inflator is preferably connected to each of the pair of left and right side chambers.

By configuring the inflation gas to flow from the side chamber to the upper chamber, it becomes possible to initially deploy the side chamber to quickly restrain the occupant's lateral movement.

Among the long rod-shaped airbags, a lower portion from the folded portion may be accommodated along a longitudinal direction of a side surface of the seatback.

The inflator may be configured to be connected to each of the pair of left and right side chambers.

The inflator may be disposed within a range spanning a chest region, an abdominal region, and a lumbar region of the passenger.

Preferably, a first connecting member for fixing the long rod-shaped airbag to the seatback is provided in at least one of a head region, a chest region, an abdominal region, and a lumbar region of the occupant.

It can be set as the structure provided with the 2nd connection member connected to the end vicinity of the said elongate rod-shaped airbag, and the side part of the said seat cushion.

1 shows a state in which an airbag device according to the present invention is mounted on a vehicle seat, (a) shows a state seen from the side in the left-right direction of the vehicle, and (b) shows a state seen from the front. In addition, it is shown in perspective with respect to a vehicle seat.
Fig. 2 shows the structure of an airbag employed in the airbag device according to the present invention, wherein (a) is a plan view showing the airbag deployed state (state before accommodation), (b) is a rolled state (state at the time of accommodation); ) is a front view showing
Fig. 3 shows the operating state (airbag deployment state) of the airbag device according to the present invention, wherein (a) shows a side view in the vehicle left-right direction, and (b) shows a front view.
4 (a) to (e) are explanatory views showing variations of the airbag device according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a vehicle seat according to an embodiment of the present invention will be described based on the accompanying drawings. In addition, 'before' indicated in each figure is the direction the passenger is facing when seated in the direction of travel in the normal posture, 'rear' is the direction opposite to 'before', and 'in' is the vehicle width direction. The inner side (occupant side) and 'outside' indicate the vehicle width direction outer side (door panel side), respectively.

(Example 1)

1 is a side view (a), a front view (b) showing a state in which an airbag device 1 according to a first embodiment of the present invention is mounted on vehicle seats 2 and 3; It shall be shown through perspective. Fig. 2 shows the structure of the airbag 14 employed in the airbag device 1 according to the first embodiment, wherein (a) is a plan view showing the airbag 14 in a deployed state (state before accommodation), ( b) is a front view showing the rolled state (state at the time of accommodation).

The airbag device 1 according to the present embodiment is equipped on a vehicle seat having a seat cushion 3 forming a seat surface and a seatback 2 forming a backrest. The airbag device 1 is accommodated in the left and right sides of the seatback 2 and includes a pair of inflators 12a and 12b that generate inflation gas, and are accommodated in the seatback 2 in a rolled or folded state and include the inflators 12a and 12b. ) and an airbag 14 deployed by the inflation gas emitted from the airbag 14 . In addition, in the present embodiment, the seat back 2 has a headrest integral type, but it can also be applied to a seat equipped with a headrest as a separate member.

The airbag 14 is deployed from the side of the seatback 2 toward the front, and includes a pair of left and right side chambers 16a and 16b, and a pair of side chambers 16a that restrict movement of at least the shoulder from the occupant's lumbar portion. , 16b) and is configured to include an upper chamber 18 located above the head of the occupant when the airbag 14 is deployed. The side chambers 16a and 16b can be symmetrical. In addition, the upper chamber 18 is located in the longitudinal center of the airbag 14 in the unfolded state before being accommodated (FIG. 2), and is integrally molded with the same fabric as the side chambers 16a and 16b.

The upper chamber 18 of the airbag 14 is in fluid communication with the side chambers 16a, 16b, and the inflation gas discharged from the inflator 12a, 12b flows from the side chambers 16a, 16b to the upper chamber 18 is meant to flow in. And the upper chamber 18 is developed so as to cover the head of the occupant over the headrest from the vicinity of the upper edge of the seatback 2 (FIG. 3).

The airbag device 1 according to the present embodiment is provided with first connecting members (tabs) 22a, 22b, 22c, 22d for fixing the airbag 14 compressed in a rolling shape to the seatback 2 . are doing The first connecting members 22a, 22b, 22c, 22d are disposed one at a time on the upper and lower portions of the inflators 12a and 12b in the left and right side portions of the seat back 2 . Further, the inflators 12a and 12b are introduced from the inflator introduction portions 20a and 20b of the airbag 14 .

By installing the first connecting members 22a, 22b, 22c, and 22d at the upper and lower portions of the inflators 12a and 12b, the vicinity of the place where the greatest pressure is generated in the initial stage of deployment of the airbag 14 (around the inflator) is fixed. This makes the deployment behavior of the airbag 14 stable.

Further, the first connecting member can be provided in the left and right side portions of the seatback 2 from the head region and chest region to the abdomen region and lumbar region of the occupant. In this case, it becomes possible to restrain and protect the entire range of the occupants seated in the seat.

The airbag device 1 according to the present embodiment further has first ends 24a1 and 24b1 connected to the vicinity of the lower end of the airbag 14 in the accommodated state, and second ends 24a2 and 24b2 connected to the side portions of the seat cushion 3 . ), belt-shaped second connection members 24a and 24b are provided on both left and right sides of the sheet. The second connecting members 24a and 24b may be tethers formed of the same material (fabric) as the airbag 14 . Here, the first ends 24a1 and 24b1 of the second connecting members 24a and 24b are connected to the vicinity of the lower ends of the side chambers 16a and 16b in the deployed state.

Fig. 3 shows the operating state (the deployed state of the airbag 14) of the airbag device 1 according to the first embodiment, wherein (a) shows a side view in the vehicle width direction, (b) is a front view It shows what it looks like in

When a vehicle side collision or the like occurs, inflation gas is released from the inflators 12a and 12b, and the airbag 14 is inflated and deployed. When the airbag 14 starts to inflate, the gas first flows into the side chambers 16a and 16b and then into the upper chamber 18 . Then, the side chambers 16a and 16b are deployed from the side of the seatback 2 toward the front, and then the upper chamber 18 located above the head of the occupant is deployed forward over the headrest.

The airbag 14 according to the present embodiment connects a pair of left and right side chambers 16a and 16b for restricting movement of the shoulder from the occupant's waist, and the pair of side chambers 16a and 16b, Since it is comprised so that it may contain the upper chamber 18 located above the head of a person, the airbag 14 deploys in the dome shape, and covers the occupant seated on the seat 3 from the left and right and upper part. As a result, at least the movement of the occupant in the left-right direction, upward, and obliquely upward can be reliably restrained, and it becomes possible to properly protect the occupant from the head to the concave portion.

In addition, since the expansion gas is configured to flow from the side chambers 16a and 16b to the upper chamber 18, the side chambers 16a and 16b are initially deployed to quickly restrict the occupant's lateral movement. have.

The upper chamber 18 deploys near the trailing edge of the top of the seatback 2 . The upper chamber 18 is deployed near the trailing edge of the upper end of the seatback 2, so that the upper chamber 18 is covered from the back to the front of the occupant's back. For this reason, it is avoidable that the upper chamber 18 directly applies an impact to the head of the occupant when the airbag 14 is deployed. In addition, when the seatback and the headrest are configured as separate members, the connecting member 18 extends forward beyond the headrest (over riding) at the upper end of the seatback.

Further, since the airbag 14 is fixed to the seatback 2 by the plurality of first connecting members 22a, 22b, 22c, 22d, when the airbag 14 is deployed, it is positioned between the seatback 2 and the airbag 14. It is possible to reduce the possibility of the occurrence of gaps in the As a result, for example, when an occupant contacts the airbag 14 at the time of a vehicle collision, the occupant can be reliably restrained without protruding from the gap between the airbag 14 and the seatback 2 . can

In addition, since the belt-shaped second connecting members 24a and 24b connecting the vicinity of the lower end of the airbag 14 and the side of the seat cushion 3 are provided, the occupants seated on the seats 2 and 3 are The restraint performance in recessed part vicinity can be improved. That is, when the recessed portion close to the center position of the occupant moves in the direction in which the airbag 14 is pushed down, the airbag 14 is reliably held by the second connecting members 24a and 24b, and the passenger is boarded. It becomes possible to avoid the situation in which the phosphorus protrudes in the horizontal direction.

Further, by connecting the first ends 24a1, 24b1 of the second connecting members 24a, 24b to the vicinity of the front ends of the side chambers 16a, 16b, the deployed posture of the side chambers 16a, 16b is maintained in an appropriate state. can support For example, when the first ends 24a1, 24b1 of the second connecting members 24a, 24b are connected near the rear ends of the side chambers 16a, 16b, when the airbag 14 is deployed, the side chambers 16a, 16b ), a situation in which the movement is not stable is expected due to a rampage in the front part. In this regard, when the first ends 24a1 and 24b1 of the second connecting members 24a and 24b are connected to the vicinity of the front ends of the side chambers 16a and 16b, the posture of the front portion of the deployed side chambers 16a, 16b can be properly held (controlled), and the restraint performance of the occupant is improved.

In the present invention, the folding part 100 is formed by folding the part corresponding to the upper chamber 18 of the long rod-shaped airbag 14, and the folding part 100 is accommodated above the seatback 2 has been A portion of the long rod-shaped airbag 14 that is lower than the folded portion 100 is accommodated along the longitudinal direction of the side surface of the seatback 2 . Moreover, the upper part of the side chambers 16a, 16b may be contained in the folding|folding part 100. As shown in FIG.

By folding and accommodating the upper portion of the long rod-shaped airbag 14 , the deployment of the foldable portion 100 is slightly delayed. That is, the mainly lower side of the side chambers 16a and 16b that are not folded is deployed first, and the lateral movement of the occupant is quickly restrained. In addition, by folding the upper portion of the airbag 14 , an airbag with a capacity sufficient to cover the head of the occupant can be secured above the seatback 2 .

And by unfolding the folding part 100 (upper chamber 18) so as to cover the upper part of the passenger's head over the headrest, the possibility of giving damage to the passenger's head can be significantly reduced. For example, when the folded portion 100 is deployed from the front of the headrest, the airbag 14 directly hits the head of the occupant, and there is a risk of head injury and/or neck injury.

4(a) to (e) are explanatory views showing variations of the folding part 100 of the airbag device according to the present invention, and showing the folding part 100 as viewed from the back of the seatback 2 .

4 (a) and (b) show an example in which the folded portion 100 is molded into an inverted omega shape of the omega shape. In this example, the airbag 14 compressed in the shape of a rod is disposed approximately along the edge (left edge, upper edge, accidental part) of the seatback 2 so as to reach the other side through the top from one side of the seatback 2 . do. At this time, when the rod-shaped airbag 14 extending from the left and right ends of the upper part of the seat back 2 toward the center in the left and right directions is folded back and extended toward the end direction (outside) again, the first Fold-back portions 101L and 101R are formed. Also, second folded portions 102L and 102R extending from the first folded portions 101L and 101R in the left-right direction and folded back toward the center are formed near the end of the upper portion of the seatback 2 .

And the form in which the 1st fold-down parts 101L, 101R is located below the 2nd fold-back parts 102L, 102R is an omega shape (a), Conversely, the 1st fold-down part 101L, 101R is a 2nd form The omega shape (b) is inverted in the form to be positioned above the folded portions 102L and 102R.

As shown in Fig. 4(a), by forming the folded portion 100 into an omega shape, when the airbag 14 is deployed, the force of the folding portions 100 and 18 to deploy upward becomes strong, and the head Even when the rest is relatively large, it is easy for the airbag 14 (upper chamber 18) to climb over the headrest and project forward.

On the other hand, as shown in Fig. 4(b), when the airbag 14 is deployed by forming the folds into an inverted omega shape, the folds 100 and 18 are more likely to be deployed in the left and right width directions, and It becomes possible to quickly constrain the movement of the head in the left and right direction.

4( c ) shows an example in which the folding part 100 is molded into an M-shape. In this example, the airbag 14 compressed in the shape of a rod is disposed approximately along the edge (left edge, upper edge, accidental part) of the seatback 2 so as to reach the other side through the top from one side of the seatback 2 . do. In addition, third folded portions 103L and 103R are formed in which the rod-shaped airbag 14 extending upward from the upper left and right ends of the seatback 2 is folded back toward the center or downward, and further, the third A fourth folded portion 104 that extends downwardly from the folded portions 103L and 103R and is folded back near the center is formed.

As shown in Fig. 4(c), by forming the folded portion 100 into an M-shape, when the airbag 14 is deployed, the folded portion 100 (upper chamber 18) is directed in the left-right width direction. It becomes easy to deploy, and it becomes possible to quickly restrain the movement of the head of a occupant in the left-right direction.

4(a) to 4(c), by folding the portion corresponding to the upper chamber 18 of the airbag 14 symmetrically left and right, the present invention without being aware of the far side and the near side of the vehicle seat It becomes possible to apply the airbag device according to the present invention universally to various seats.

4 (d) and (e) show an example in which the folding part 100 is molded into an S-shape or a Z-shape. In this example, the airbag 14 compressed in the shape of a rod is disposed approximately along the edge (left edge, upper edge, accidental part) of the seatback 2 so as to reach the other side through the top from one side of the seatback 2 . do. And in the case of the S-folding shown in Fig. 4(d), the seat back 2 extends from one end (first end 121) in the upper left-right direction toward the other end (second end 122). A fifth folded portion 105 is formed in which the rod-shaped airbag 14 is folded back toward the first end 121 near the second end 122, and in the fifth folded portion 105 A sixth folded-back portion 106 that extends from the first end 121 to extend back toward the second end 122 is formed. In addition, in the S-shape and the Z-shape, the first end 121 and the second end 122 are opposite to each other.

By forming the folding part 100 asymmetrically, such as an S-shape or a Z-shape, the deployment on the left and right side of the seatback 2 is accelerated, and deployment is delayed on the other side, so for example, the side with faster deployment By arranging it on the near side (door side), it is possible to properly protect the occupants in the event of a side collision. That is, by using the airbags having different folding directions (S-shape or Z-shape) according to the near side and the far side, it becomes possible to appropriately protect the occupants in the event of a side collision.

Although the present invention has been described with reference to Examples, the present invention is not limited to the Examples. That is, it can be suitably changed without deviating from the scope of the technical idea of this invention.

Claims (17)

An airbag device equipped in a vehicle seat having a seat cushion forming a seat surface and a seatback forming a backrest, the airbag device comprising:
an inflator that generates inflation gas;
an airbag accommodated in at least the seatback and deployed by the inflation gas discharged from the inflator;
The airbag includes a pair of left and right side chambers deployed from the side of the seatback toward the front and an upper chamber deployed above the head of the occupant,
The airbag is compressed into a long rod shape that is rolled or folded in a direction crossing the longitudinal direction in a planar shape before being accommodated,
A folding portion is formed by folding at least including a portion corresponding to the upper chamber of the long rod-shaped airbag to secure a capacity to cover the head of the passenger above the seatback, and the folding portion is placed on the upper portion of the seatback accept,
The upper chamber is configured to deploy at the upper rear portion of the seatback, such that the fold is deployed over the headrest to cover the upper portion of the passenger's head, thereby reducing the possibility of inflicting damage to the passenger's head airbag device. According to claim 1,
The airbag device according to claim 1, wherein the folding part is deployed so as to climb over a headrest of the vehicle seat and cover an upper portion of the head of a passenger. 3. The method of claim 2,
The airbag device, characterized in that the folded portion is formed symmetrically when viewed from the rear of the seatback. 4. The method of claim 3,
The airbag device according to claim 1, wherein the folding portion is formed in an omega (Ω) shape when viewed from the rear of the seatback. 4. The method of claim 3,
The airbag device, characterized in that the folded portion is formed in an inverted omega shape when viewed from the rear of the seatback. 4. The method of claim 3,
The airbag device according to claim 1, wherein the folded portion is formed into an M shape when viewed from the rear of the seatback. 3. The method of claim 2,
The airbag device, characterized in that the folded portion is formed asymmetrically when viewed from the rear of the seatback. 8. The method of claim 7,
The airbag device according to claim 1, wherein the folded portion is formed in an S-shape when viewed from the rear of the seatback. 8. The method of claim 7,
The airbag device, characterized in that the folding portion is formed in a Z-shape when viewed from the rear of the seatback. delete 10. The method according to any one of claims 1 to 9,
The airbag device according to claim 1, wherein a lower portion of the long rod-shaped airbag than the folded portion is accommodated in a longitudinal direction of a side surface of the seatback. 12. The method of claim 11,
and the inflation gas discharged from the inflator is configured to flow from the side chamber to the upper chamber. 13. The method of claim 12,
and the inflator is connected to each of the pair of left and right side chambers. 14. The method of claim 13,
The airbag device according to claim 1, wherein the inflator is disposed within a range spanning a chest region, an abdominal region, and a lumbar region of the passenger. 12. The method of claim 11,
and a first connecting member for fixing the long rod-shaped airbag with respect to the seatback is provided in at least one of a head region, a chest region, an abdominal region, and a lumbar region of the occupant. 12. The method of claim 11,
and a second connecting member connected to the vicinity of the end of the long rod-shaped airbag and the side of the seat cushion. A vehicle seat provided with the airbag device according to claim 1.

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