Occupant protection device

Abstract

The present invention relates to an occupant protection device, and provides an occupant protection device capable of improving the occupant protection function. The airbag (121) of the occupant protection device (101) is connected from behind the head of the occupant (P) through the front of the shoulder and the side of the thigh, and is connected at the lower part of the lower limbs, and is deployed in an inverted V shape to surround the occupant (P). Therefore, it is possible to cope with various collision types such as front collision and side collision, thereby improving the protection function for the occupant (P). In addition, tension is applied in the direction opposite to the side where the occupant (P) falls at the top and bottom, so that the impact itself applied to the occupant (P) can be alleviated, thereby improving the occupant protection function.

Description

Technical Field

[0001] The invention relates to an occupant protection device. Background Art

[0002] In order to protect passengers from collisions, etc., vehicles such as automobiles use seat belt devices and air bag devices.

[0003] As such an airbag device, there is a front airbag that deploys from the front side to the rear of the occupant. The front airbag deploys when the vehicle is hit from the front, for example, to block and support the occupant who is about to move forward in a frontal collision (frontal collision), thereby protecting the occupant.

[0004] In addition, there are curtain airbags for preventing collisions from the side of the vehicle. The curtain airbags are deployed in the front-rear direction along the inner side of the vehicle. For example, when a collision occurs from the side of the vehicle, the curtain airbags are deployed to block and support the occupants who are about to move outward in the vehicle width direction in a side collision (side collision) and protect them.

[0005] On the other hand, in the event of a side collision, the occupants of seats on the far side farther from the side contacted by the collision object (near side) will move significantly toward the near side due to inertia, so the far side airbag deployed between the driver's seat and the front passenger seat should also be considered.

[0006] However, unlike a near-side deployed airbag, a typical far-side airbag is not adjacent to a supporting object such as a side door. Therefore, even if it is inflated and deployed, the occupant may fall down due to the impact when the occupant is blocked, and the occupant may not be fully restrained.

[0007] Therefore, a side airbag device is provided in which a small airbag is deployed on the far side and a seat belt is tensioned outside the small airbag to support the airbag (see Patent Document 1).

[0008] Prior art literature

[0009] Patent Literature

[0010] Patent Document 1: Japanese Patent Application Publication No. 2014-012495 Summary of the invention

[0011] Problems to be solved by the invention

[0012] However, in the case of a collision with a vehicle, it is necessary to consider various collision forms from various directions, such as rolling, deflection and other complex movements. In order to cope with various collision forms, there is a problem of high cost. In addition, if multiple local restraints are performed like the above-mentioned existing airbag device, it is possible that a large force will be concentrated on a specific part.

[0013] The present invention has been made to solve such conventional problems, and an object of the present invention is to provide an occupant protection device that can cope with various types of collisions and mitigate the impact itself applied to the occupant, thereby improving the occupant protection function.

[0014] Means of solving problems

[0015] The occupant protection device of the present invention protects occupants sitting on vehicle seats, and is characterized in that the occupant protection device comprises: an airbag, at least a portion of which is rod-shaped, which is deployed laterally on the shoulders in a manner connecting the upper and lower parts of the shoulders of the occupant sitting on the seat, and when the deployment is completed, it becomes a roughly straight line shape inclined upward toward the left and right center parts of the seat.

[0016] In addition, optionally, the lower portion of the airbag is stored in the lower portion of the seat cushion of the seat, and the upper portion is stored in the upper portion of the seat back, and the airbag is deployed from the side of the legs or waist of the occupant to the front of the shoulder.

[0017] In addition, optionally, the airbags are arranged on the left and right sides of the seat, and the left and right airbags are connected behind or above the occupant's head.

[0018] In addition, optionally, a lower portion of the airbag is deployed forward or downward of the seat.

[0019] In addition, optionally, there is an airbag guide portion for guiding the lower portion of the airbag to deploy forward or downward of the seat when the airbag is deployed.

[0020] In addition, optionally, it has: a collision type detection device, which detects or predicts the collision type of the vehicle; and a deployment type control unit, when the collision type detection device detects that the collision type is a side collision, the airbag is deployed more outward than the shoulder of the occupant.

[0021] Effects of the Invention

[0022] According to the present invention, it is possible to provide an occupant protection device that can cope with various types of collisions and mitigate the impact itself applied to the occupant, thereby improving the occupant protection function. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a cross-sectional view showing an example of a vehicle having an occupant protection device according to an embodiment of the present invention;

[0024] Figure 2 1 is a diagram showing a stowed state and a deployed state of an airbag according to an embodiment of the present invention;

[0025] 3 (a)-(d) are diagrams showing the state of the airbag during deployment in an embodiment of the present invention;

[0026] Figure 4 The diagrams show the stowed state and the deployed state of an airbag having different deployment shapes during a side collision.

[0027] Explanation of symbols

[0028] 1 vehicle; 3 floor; 4 roof; 10 seat; 10A storage portion; 11 seat cushion; 11a, 11b, 11c storage portions; 12 seat back; 12a, 12b, 12c storage portions; 13 headrest; 101, 102 occupant protection device; 111, 112 gas generator; 121, 122 airbag; 131 guide path DETAILED DESCRIPTION

[0029] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0030] First, the structure of a vehicle having an occupant protection device according to an embodiment of the present invention will be described. Figure 1 2 is a cross-sectional view showing a vehicle having an occupant protection device according to an embodiment of the present invention. Figure 2 3(a) to (d) are diagrams showing the state of the airbag during deployment in the embodiment of the present invention.

[0031] (Configuration of Vehicle 1)

[0032] like Figure 1 As shown, the passenger compartment of the vehicle 1 is provided with a floor 3 at the lower part and a roof 4 at the upper part. In addition, a seat 10 is arranged on the floor 3.

[0033] The seat 10 is a seat for the passenger P of the vehicle 1. The seat 10 includes a seat cushion 11 (seat portion) for supporting the thighs of the passenger P from the buttocks, a seat back 12 (backrest portion) for being tilted, and a headrest 13 (headrest portion) for supporting the head of the passenger P.

[0034] The seat 10 is provided with a storage portion 10A for storing an airbag 121 described later. The storage portion 10A is composed of storage portions 12a, 12b, 12c of the seat back 12 and storage portions 11a, 11b, 11c of the seat cushion 11.

[0035] The storage portion 12a of the seat back 12 is provided from the upper end to the lower end along the left side portion of the seat back 12. In addition, the storage portion 12b of the seat back 12 is provided from the upper end to the lower end along the right side portion of the seat back 12. In addition, the storage portion 12c of the seat back 12 is provided along the upper portion of the seat back 12. Furthermore, the storage portion 12b of the seat back 12 is connected to the storage portion 12c, and the storage portion 12c is connected to the storage portion 12a.

[0036] The storage portion 11 a , the storage portion 11 b , and the storage portion 11 c of the seat cushion 11 are provided below a seat surface (seat seat surface) of the seat cushion 11 .

[0037] The storage portion 11a of the seat cushion 11 is provided along the left side of the seat cushion 11 from the rear to the front, and extends rearward to the upper end of the seat cushion 11. The storage portion 11b of the seat cushion 11 is provided to cross the interior of the seat cushion 11 from left to right.

[0038] In addition, the storage portion 11 c of the seat cushion 11 is provided along the right side portion of the seat cushion 11 from the rear toward the front, and further, extends rearward to the upper end of the seat cushion 11 .

[0039] Furthermore, the storage portion 11 a of the seat cushion 11 is connected to the storage portion 11 b , and the storage portion 11 b is connected to the storage portion 11 c .

[0040] Furthermore, the storage portion 12 a of the seat back 12 is connected to the storage portion 11 a of the seat cushion 11 , and the storage portion 11 c of the seat cushion 11 is connected to the storage portion 12 b of the seat back 12 .

[0041] Therefore, the storage portion 10A of the seat 10 is connected in order from the storage portion 12a of the seat back 12 to the storage portion 11a, storage portion 11b, storage portion 11c of the seat cushion 11, storage portion 12b, storage portion 12c and storage portion 12a of the seat back 12.

[0042] Furthermore, the seat cushion 11 of the seat 10 is provided with a guide path 131 for guiding the deployment direction of the airbag 121 stored in the storage portion 11 b of the seat cushion 11 when deployed.

[0043] The guide path 131 is a passage extending from the storage portion 11b of the seat cushion 11 toward the lower side and obliquely forward side of the vehicle 1, and is set to have a larger width toward the front end. In addition, the front end portion of the guide path 131 extends to the vicinity of the lower portion of the seat cushion 11. Moreover, at the lower portion of the seat cushion 11, the vicinity of the front end portion of the guide path 131 can be broken when the airbag 121 is deployed, and the airbag 121 can protrude to the outside.

[0044] (Configuration of Occupant Protection Device 101)

[0045] Next, the configuration of the occupant protection device in the embodiment of the present invention will be described. The occupant protection device in the present embodiment is controlled by an airbag deployment control unit (ACU), a vehicle control unit (ECU), and the like.

[0046] The occupant protection device 101 includes a gas generator 111 and an airbag 121 .

[0047] (Gas generator 111)

[0048] If a collision or collision prediction of the vehicle 1 is detected, the gas generator 111 ignites gunpowder according to a signal sent from the abnormality detection unit or the ECU, generates gas by a chemical reaction caused by combustion, and presses the gas into the airbag 121. That is, the gas generator 111 supplies gas to the airbag 121. In addition, the gas generator 111 is provided inside the rear of the seat cushion 11 of the seat 10. That is, the gas generator 111 is provided below the seat back 12.

[0049] The gas generator 111 presses gas into the airbag 121 from a position of the storage portion 11a of the seat cushion 11 close to the storage portion 12a of the seat back 12 and from a position of the storage portion 11c of the seat cushion 11 close to the storage portion 12b of the seat back 12. Alternatively, the gas may be pressed into the introduction position from a higher position, i.e., a predetermined position of the storage portions 12a and 12b of the seat back 12, depending on the inflow state of the gas.

[0050] (Airbag 121)

[0051] The airbag 121 is a bag body into which gas is compressed by the gas generator 111 , and is folded into a small size when not in operation.

[0052] Specifically, the airbag 121 is stored in the storage portion 10A of the seat 10. That is, the airbag 121 is stored in the storage portions 12a, 12b, 12c of the seat back 12 and the storage portions 11a, 11b, 11c of the seat cushion 11. Therefore, the airbag 121 is disposed on both sides of the seat 10 and in the upper and lower parts.

[0053] Thus, the airbag 121 is arranged from the upper part of the seat back 12 along the side wall to the lower part, enters the rear side of the seat cushion 11 from the lower part of the seat back 12, and faces forward at the side of the seat cushion 11. Furthermore, the airbag 121 crosses the inside of the seat cushion 11 to the opposite side, is arranged at the rear from the opposite side, and enters the side of the lower part of the seat back 12. In addition, the airbag 121 passes from the lower part of the seat back 12 through the side toward the upper part, and then connects to the original position along the upper part of the seat back 12, forming a ring shape.

[0054] Therefore, the airbag 121 is arranged from the top of the seat back 12 along the side to the bottom of the seat surface (seat seat surface) of the seat cushion 11. In addition, the airbag portion arranged on one side of the seat 10 communicates with the airbag portion arranged on the other side of the seat 10 at the top and bottom.

[0055] In the present embodiment, the airbag 121 is disposed from above the seat back 12 , but may be disposed from a headrest.

[0056] In addition, for the convenience of the following description, the respective parts of the airbag 121 stored in the storage portion 12a of the seat back 12, the storage portions 11a, 11b, 11c of the seat cushion 11, and the storage portions 12b, 12c of the seat back 12 are respectively referred to as airbags 121a, 121b, 121c, 121d, 121e, 121f. In addition, the airbag 121 is continuously connected in a circular ring shape, and these respective parts are provided only for the convenience of description, and do not strictly indicate their positions, but indicate the parts stored in the approximate range of each storage portion.

[0057] In addition, as described above, when the airbag 121 is inflated by the input of gas, the airbag 121c, which is mainly accommodated in the accommodation portion 11b of the seat cushion 11, is guided downward and forward along the guide path 131. That is, the guide path 131 functions as an airbag guide. In addition, the guidance of the airbag 121c is not limited to this, and for example, the airbag 121c may be guided downward and forward using a guiding gas generator, or the airbag 121c may be guided by stretching it using a winding mechanism or the like, or by a hydraulic mechanism.

[0058] When the airbag 121 is inflated and deployed, the airbags 121a and 121e protrude outward from the side of the seat back 12, and the airbag 121f protrudes upward from the upper part of the seat back 12. The airbags 121a and 121e are deployed in a substantially rod-like shape. The airbags 121b and 121d protrude outward from the side of the seat cushion 11.

[0059] Thus, the airbag 121a and the airbag 121e are deployed to the side of the shoulder in a manner connecting the upper and lower parts of the shoulder of the occupant. In addition, the airbags 121b, 121a and the airbags 121d, 121e are deployed from the side of the leg or waist of the occupant to the front of the shoulder. In addition, when the deployment is completed, it will become a roughly straight line shape inclined upward toward the left and right center of the seat 10, and the details will be described later. Therefore, when the airbag 121 is inflated and deployed, the airbag 121 restrains the occupant P in an inverted V shape.

[0060] In the present embodiment, the airbag 121 protrudes outward, but the present invention is not limited thereto. For example, the airbags 121a, 121e, and 121f may protrude forward of the seat back 12, and the airbags 121b and 121d may protrude upward of the seat cushion 11.

[0061] (Operation of the Occupant Protection Device 101)

[0062] Next, the operation of the occupant protection device 101 when the vehicle 1 collides with a collision object will be described.

[0063] In such an occupant protection device 101 , when a collision or a prediction of a collision with the vehicle 1 is detected, the gas generator 111 is operated, and gas is injected into the airbag 121 by the gas generator 111 .

[0064] When the gas generator 111 presses gas into the airbag 121, the gas is firstly pressed into the airbags 121b and 121d, which are accommodated in the accommodation portions 11a and 11c of the seat cushion 11, and then the gas is pressed from the airbags 121b and 121d into the airbags 121a and 121e accommodated in the accommodation portions 12a and 12b of the seat back 12. Thus, the airbags 121b and 121d of the airbag 121 expand and jump out to both sides of the seat cushion 11 and are deployed, and at the same time, the airbags 121a and 121e also expand and jump out to both sides of the seat back 12 and are deployed.

[0065] Then, gas is injected from the airbags 121a and 121e in the airbag 121 into the airbag 121f stored in the storage portion 12c provided on the upper portion of the seat back 12. As a result, the airbag 121f also expands, jumps out above the seat back 12, and deploys behind the occupant P in a state connected to the airbags 121a and 121e.

[0066] Alternatively, an upper holding portion may be provided behind or above the head of the occupant P (above the shoulders and inward in the left-right direction), that is, near the upper center of the seat back 12, to hold the airbag 121f. Thus, the airbag 121 is fixed at the upper portion.

[0067] On the other hand, gas is also pressed from the airbags 121b and 121d of the airbag 121 into the portion of the airbag 121c that is accommodated in the accommodation portion 11b that crosses the inside of the seat cushion 11. Furthermore, if the airbag 121c expands, it cannot be completely accommodated in the accommodation portion 11b of the seat cushion 11, but is guided downward and forward along the guide path 131.

[0068] As a result, the distance from airbag 121f to airbag 121c becomes longer, and airbags 121a, 121b and airbags 121e, 121d are pulled downward and forward. Therefore, airbags 121a, 121b and airbags 121e, 121d become linear, and airbag 121 becomes an inverted V shape with the rear of the head of the occupant P as the vertex.

[0069] Here, the process of deployment of the airbag 121 guided by the guide path 131 will be described in detail.

[0070] As shown in Fig. 3, when the gas is pressed into the airbag 121 by the gas generator 111, the gas is first pressed into the airbags 121b and 121d, and then into the airbag 121c. Furthermore, when the airbag 121c is inflated, as shown in Fig. 3(b), it cannot be completely stored in the storage portion 11b of the seat cushion 11, but is guided slightly downward and forward along the guide path 131.

[0071] Furthermore, when the gas is pressed into the airbag 121c, as shown in FIG3(c), the airbag 121c further expands and is further guided downward and forward along the guide path 131. In addition, at this time, the gas is also input into the airbags 121a and 121e, and the airbags 121a and 121e below also jump out from the seat cushion 11 and deploy.

[0072] Then, if the gas is further pressed into the airbag 121 c , the airbag 121 c expands to the maximum extent and is guided to the lowermost and frontmost part of the guide path 131 , as shown in FIG. 3( d ) .

[0073] In this way, the airbag 121 c which has become the lower portion of the airbag 121 is guided by the guide path 131 and deployed forward and downward of the seat 10 .

[0074] As described above, the airbag 121 extends from behind the head of the occupant P through the front of the shoulder and the side of the thigh, and is connected to the lower part of the lower limbs, and is deployed in an inverted V shape to surround the occupant P. Therefore, it can cope with various collision types such as front collision and side collision, thereby improving the protection function for the occupant P.

[0075] In addition, in the airbag 121, even if the occupant P wants to move to the outside, the airbag 121 on the left or right side where the occupant P falls (for example, airbags 121a, 121b or airbags 121e, 121d) will be pulled in the opposite direction by the airbag 121 on the other left or right side (for example, airbags 121e, 121d or airbags 121a, 121b), thereby obtaining sufficient reaction force.

[0076] Next, an occupant protection device that changes the deployment shape of an airbag during a side collision will be described.

[0077] in addition, Figure 4 The diagrams show the stowed state and the deployed state of an airbag, which have different deployment shapes during a side collision.

[0078] The seat 10 of this embodiment is the same as the seat 10 of the above embodiment. Specifically, the seat 10 has a storage portion 10A for storing the airbag 122 , and the storage portion 10A is composed of the storage portions 12a, 12b, 12c of the seat back 12 and the storage portions 11a, 11b, 11c of the seat cushion 11 .

[0079] In addition, the seat cushion 11 is also provided with a guide path 131 for guiding the airbag 122 during deployment, similarly to the above-described embodiment.

[0080] (Configuration of Occupant Protection Device 102)

[0081] The occupant protection device 102 in the present embodiment includes a gas generator 112 , an airbag 122 , and an ECU.

[0082] Here, the ECU included in the occupant protection device 102 refers to a unit having the following functions: a function as a collision form detection device that detects or predicts the collision form of the vehicle 1; and a function as a deployment form control unit that controls the deployment form of the airbag 122 when the predicted collision form is detected to be a side collision. Therefore, the occupant protection device 102 has an ECU separately, and the occupant protection device 102 may only have the function as a collision form detection device and the function as a deployment form control unit.

[0083] (Gas generator 112)

[0084] The gas generator 112 , similar to the gas generator 111 described above, generates gas based on detection of a collision of the vehicle 1 or a prediction of a collision, and presses the gas into the airbag 122 .

[0085] (Airbag 122)

[0086] The airbag 122 is similar to the airbag 121 and is stored in a ring-shaped bag inside the seat 10. Specifically, the airbag 122 is stored in the storage portion 12a of the seat back 12, the storage portions 11a, 11b, 11c of the seat cushion 11, and the storage portions 12b, 12c of the seat back 12.

[0087] In addition, in the present embodiment, for the sake of convenience of explanation, the parts of the airbag 122 accommodated in the storage portion 12a of the seat back 12, the storage portions 11a, 11b, 11c of the seat cushion 11, and the storage portions 12b, 12c of the seat back 12 are also respectively designated as airbags 122a, 122b, 122c, 122d, 122e, 122f.

[0088] In such an occupant protection device 102, when a collision or collision prediction of the vehicle 1 is detected, it is determined whether it is a side collision. If it is determined not to be a side collision, that is, a front collision or a rear collision, the airbag 122 is deployed around the seat 10 in the same manner as the deployment of the airbag 121 described above.

[0089] On the other hand, even when it is determined to be a side collision, the occupant protection device 102 deploys the airbag 122 halfway in the same manner as the deployment of the airbag 121 described above.

[0090] That is, the occupant protection device 102 operates the gas generator 112 , and the gas generator 112 presses the gas into the airbag 122 .

[0091] Specifically, when the gas generator 112 is operated, the gas is pressed into the airbags 122b and 122d from the gas generator 112, and then the gas is pressed into the airbags 122a and 122e from the airbags 122b and 122d. As a result, the airbags 122b and 122d of the airbag 122 expand and jump out to both sides of the seat cushion 11 and deploy, and at the same time, the airbags 122a and 122e also expand and jump out to both sides of the seat back 12 and deploy.

[0092] Then, gas is injected into the airbag 122f from the airbags 122a and 122e in the airbag 122. As a result, the airbag 122f also expands, jumps out above the seat back 12, and deploys behind the occupant P in a state where the airbags 122a and 122e are linked.

[0093] Meanwhile, gas is injected into the airbag 122c from the airbags 122b and 122d of the airbag 122. When the airbag 122c expands, it cannot be completely stored in the storage portion 11b of the seat cushion 11, but moves downward and forward along the guide path 131.

[0094] Up to this point, the same operations as those in the above-mentioned embodiment are performed.

[0095] Here, if a side collision is detected, the movement of the airbag 122c is restricted and the airbag 122c does not move forward compared to the case of a front collision or a rear collision.

[0096] For example, a tether or the like may be provided in the airbag 122c in advance to limit the forward movement of the airbag 122c. Furthermore, the tether may be cut when the collision of the vehicle 1 is a frontal collision or a rear collision. Alternatively, an elastic body such as rubber may be provided. Alternatively, a stopper may be provided in the middle of the guide path 131, and the stopper may be released when a frontal collision or a rear collision occurs.

[0097] Furthermore, the guide path 131 may be changed. That is, a second guide path that does not extend further forward than the guide path 131 may be provided separately from the guide path 131 of the present embodiment, and the vehicle may be guided to the second guide path in the event of a side collision.

[0098] Thus, since the airbag 122c does not move forward as in a frontal collision or a rear collision, the airbags 122a, 122b and the airbags 122e, 122d do not move in front of the occupant P but remain deployed at the sides. Therefore, the occupant P can be optimally protected in a side collision.

[0099] In addition, the airbags 121a and 121e may be restricted from moving forward by tethers or the like. Thus, in the event of a side collision, the deployment positions of the airbags 121a, 121b, 121e, and 121d can be maintained at the sides of the occupant P; in the event of a frontal collision or a rear collision, the tethers are cut to expose the airbags 121a, 121b, 121e, and 121d to the front of the shoulders of the occupant P, thereby preventing the occupant P from moving forward.

[0100] In addition, in the case of a side collision, the left-right distance of the airbag 121c can be shortened. For example, a portion of the airbag 121c can be stretched approximately in the center of the airbag 121c. Thus, even in the case of a side collision, the tension of the airbags 121a, 121b and the airbags 121e, 121d can be increased.

[0101] Furthermore, when the second guide path is provided, the tension can also be increased by extending the second guide path downward.

[0102] As described above, the airbags 121 and 122 of the occupant protection devices 101 and 102 in the present embodiment are connected from the rear of the head of the occupant P through the front of the shoulder and the side of the thigh, and are connected at the lower part of the lower limbs, and are deployed in an inverted V shape to surround the occupant P, so that it can cope with various collision forms such as front collision and side collision, thereby improving the protection function for the occupant P. In addition, tension is applied in the direction opposite to the side where the occupant P falls at the top and bottom, so that the impact itself applied to the occupant P can be alleviated, thereby improving the protection function for the occupant.

Claims

1. An occupant protection device for protecting an occupant sitting on a vehicle seat, wherein: The occupant protection device comprises: The airbag, at least a portion of which is in the shape of a rod, is deployed laterally to the shoulder in a manner connecting the upper and lower parts of the shoulder of the occupant sitting on the seat. When the airbag is deployed, it becomes a substantially straight line shape that is inclined upward toward the left-right center of the seat. The seat cushion includes a storage portion disposed below the seat surface of the seat cushion and traversing the interior of the seat cushion from left to right. The lower portion of the airbag is stored in the storage portion and extends laterally from the first side portion of the seat cushion to the second side portion of the seat cushion.

2. The occupant protection device according to claim 1, wherein: The airbag has a lower portion stored in a lower portion of a seat cushion of the seat and an upper portion stored in an upper portion of a seat back, and is deployed from the side of the legs or waist of the occupant to the front of the shoulder.

3. The occupant protection device according to claim 1, wherein: The airbags are arranged on the left and right sides of the seat, and the left and right airbags are connected behind or above the head of the occupant.

4. The occupant protection device according to claim 2, wherein: The airbags are arranged on the left and right sides of the seat, and the left and right airbags are connected behind or above the head of the occupant.

5. The occupant protection device according to any one of claims 1 to 4, wherein: The lower portion of the airbag is deployed forward or downward of the seat.

6. The occupant protection device according to claim 5, wherein: An airbag guide portion is provided for guiding a lower portion of the airbag to be deployed forward or downward of the seat when the airbag is deployed.

7. The occupant protection device according to any one of claims 1 to 4, comprising: a collision form detection device for detecting or predicting a collision form of the vehicle; as well as The deployment type control unit deploys the airbag above and outward from the shoulder of the occupant when the collision type detection device detects that the collision type is a side collision.

8. The occupant protection device according to claim 5, comprising: a collision form detection device for detecting or predicting a collision form of the vehicle; as well as The deployment type control unit deploys the airbag above and outward from the shoulder of the occupant when the collision type detection device detects that the collision type is a side collision.

9. The occupant protection device according to claim 6, comprising: a collision form detection device for detecting or predicting a collision form of the vehicle; as well as The deployment type control unit deploys the airbag above and outward from the shoulder of the occupant when the collision type detection device detects that the collision type is a side collision.

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