Cushion safety air bag

Abstract

The utility model relates to a seat cushion safety air bag which is used on a seat of a vehicle and comprises an air bag air bag with an inner cavity, a generator is arranged in the inner cavity of the air bag air bag, at least part of the generator extends out of the inner cavity and is fixed with the seat, and the air bag air bag has a folded state and an unfolded state. The generator is used for inflating the airbag and switching the airbag from a folded state to an unfolded state when a vehicle is collided; the end, away from a backrest of the seat, of the air bag serves as the front end, the end, close to the backrest of the seat, of the air bag serves as the rear end, when the air bag is in the folding state, the front end of the air bag is provided with a folding structure, and the folding structure is arranged to be unfolded along with gradual inflation of the air bag. Therefore, the air bag is in an unfolded state with the front portion higher than the rear portion.

Description

Technical Field

[0001] The utility model relates to the technical field of airbags, and more specifically to a seat cushion airbag. Background Art

[0002] The seat cushion airbag is installed between the seat pan skeleton and the seat cushion (i.e., the foaming layer) of the seat. When a vehicle collision occurs, the seat cushion airbag will be detonated and bulge upward to support the foaming layer, preventing the occupant from diving, thereby avoiding the injury caused by the contact between the pelvic region of the occupant and the skeleton metal part of the seat.

[0003] Currently, some vehicles are equipped with zero-gravity seats, which are mainly divided into semi-basin scenarios and full-basin scenarios. The full-basin scenario means that the entire seat pan skeleton of the seat is a metal part, that is, the seat cushion airbag is entirely supported by the metal part, while the semi-basin scenario means that part of the seat pan skeleton is a metal part and the other part is a suspension spring, that is, the front end of the seat cushion airbag is supported by the metal part and the rear end is supported by the suspension spring. Due to the elasticity of the suspension spring, when the seat cushion airbag is detonated, the suspension spring will deform under the pressure of the seat cushion airbag, and the rear end of the seat cushion airbag will sink along with the deformation of the suspension spring. At the same time, since the metal part supporting the front end of the airbag hardly deforms, the front end of the airbag will not sink. After being subjected to the pressure of the occupant's thigh, the gas at the front end of the airbag will flow towards the rear end of the airbag that is hardly under pressure, causing the front end of the airbag to be punctured (i.e., there is almost no gas at the front end), while there is an excess of gas at the rear end. The seat cushion airbag will present a posture of "higher at the rear and lower at the front". At this time, the resistance of the occupant moving forward is reduced, and the pelvic region is more likely to contact the skeleton metal part, resulting in an increase in the injury value of the occupant and an increase in the risk of diving. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a seat cushion airbag that presents a posture of higher at the front and lower at the rear after being inflated and deployed to prevent the occupant from diving.

[0005] Based on the above purpose, the utility model provides a seat cushion airbag for a vehicle seat, including an airbag with an inner cavity. A generator is arranged in the inner cavity of the airbag. At least part of the generator extends out of the inner cavity and is fixed to the seat. The airbag has a folded state and a deployed state. The generator is used to inflate the airbag and switch it from the folded state to the deployed state when a vehicle collision occurs; taking the end of the airbag away from the backrest of the seat as the front end and the end of the airbag close to the backrest of the seat as the rear end. When the airbag is in the folded state, its front end has a folding structure, and the folding structure is arranged to unfold as the airbag is gradually inflated, so that the airbag forms a deployed state of higher at the front and lower at the rear.

[0006] Further, the folding structure has a plurality of folding parts, and each folding part is fixed together by a pre-fixing structure, and the pre-fixing structure is arranged to break as the airbag gradually inflates, so that each folding part is disconnected.

[0007] Further, at least one connecting band is provided on the airbag for fixedly connecting with the seat.

[0008] Further, the airbag includes an airbag main piece and an airbag side piece, and the airbag main piece and the airbag side piece are fixedly connected; the seat cushion airbag further includes a protective piece, and the protective piece is fixed at the bottom of the airbag for protecting the airbag.

[0009] Further, both the airbag main piece and the airbag side piece are formed by folding and are complementary in shape, so that the airbag is formed into a closed cut piece structure.

[0010] Further, the airbag main piece includes two opposite main piece cantilever parts and a main piece connecting part connected between the two main piece cantilever parts, the airbag side piece includes two opposite side piece cantilever parts and a side piece connecting part connected between the two side piece cantilever parts, the two side piece cantilever parts are respectively located on both sides of the airbag main piece, and the top and bottom of each side piece cantilever part are respectively fixedly connected with the two main piece cantilever parts, the side piece connecting part is located at the free end of the main piece cantilever part, and the top and bottom of the side piece connecting part are respectively fixedly connected with the free ends of the two main piece cantilever parts.

[0011] Further, the main piece connecting part forms the front end of the airbag, and the side piece connecting part forms the rear end of the airbag.

[0012] Further, one of the two main piece cantilever parts forms the top of the airbag, and the other forms the bottom of the airbag.

[0013] Further, the airbag main piece is formed by folding one of the main piece cantilever parts around a first folding line relative to the main piece connecting part and folding the other main piece cantilever part around a second folding line relative to the main piece connecting part.

[0014] Further, the airbag side piece is formed by folding one of the side piece cantilever parts around a third folding line relative to the side piece connecting part and folding the other side piece cantilever part around a fourth folding line relative to the side piece connecting part.

[0015] Further, the height of the side piece connecting part is less than or equal to the height of the side piece cantilever part.

[0016] Further, a first exhaust hole is provided on the main airbag sheet; the first exhaust hole is configured to discharge gas in the early stage of inflation of the airbag and stop exhausting when the airbag is completely deployed and blocked by the seat.

[0017] Further, a second exhaust hole is provided on the main airbag sheet, and the second exhaust hole is configured to always discharge the gas in the inner cavity of the airbag.

[0018] For the seat cushion airbag according to the embodiment of the present invention, the front end of the airbag has a folding structure, so that the airbag forms a posture with a higher front and a lower rear after inflation, avoiding the front end of the airbag from being punctured. Thus, during the process of lifting the legs and buttocks of the occupant within a certain range, a better supporting force is given to the legs, effectively preventing the occupant from diving. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic structural diagram of the seat cushion airbag after inflation according to the embodiment of the present invention;

[0020] Figure 2A FIG. is a schematic structural diagram of the seat cushion airbag with the first folding structure before inflation according to the embodiment of the present invention;

[0021] Figure 2B FIG. is a schematic structural diagram of the seat cushion airbag with the second folding structure before inflation according to the embodiment of the present invention;

[0022] Figure 2C FIG. is a schematic structural diagram of the seat cushion airbag with the third folding structure before inflation according to the embodiment of the present invention;

[0023] Figure 2D FIG. is a schematic structural diagram of the seat cushion airbag with the fourth folding structure before inflation according to the embodiment of the present invention;

[0024] Figure 2E FIG. is a schematic structural diagram of the seat cushion airbag with the fifth folding structure before inflation according to the embodiment of the present invention;

[0025] Figure 2F FIG. is a schematic structural diagram of the seat cushion airbag with the sixth folding structure before inflation according to the embodiment of the present invention;

[0026] Figure 3 FIG. is a cross-sectional view of the seat according to the embodiment of the present invention when the seat cushion airbag is in a folded state;

[0027] Figure 4 FIG. is a cross-sectional view of the seat according to the embodiment of the present invention when the seat cushion airbag is in a deployed state;

[0028] Figure 5A Structural schematic diagram of a seat cushion airbag without a folding structure before inflation according to an embodiment of the present invention;

[0029] Figure 5B For Figure 5A Explosion diagram of the seat cushion airbag;

[0030] Figure 6 Structural schematic diagram of the main airbag sheet after deployment according to an embodiment of the present invention;

[0031] Figure 7A First structural schematic diagram of the side airbag sheet after deployment according to an embodiment of the present invention;

[0032] Figure 7B Second structural schematic diagram of the side airbag sheet after deployment according to an embodiment of the present invention;

[0033] Figure 7C Third structural schematic diagram of the side airbag sheet after deployment according to an embodiment of the present invention;

[0034] Figure 7D Fourth structural schematic diagram of the side airbag sheet after deployment according to an embodiment of the present invention. Detailed implementation manners

[0035] The following combines the accompanying drawings to give a preferred embodiment of the present invention and describes it in detail.

[0036] As Figure 1 、 Figure 2A 、 Figure 2B 、 Figure 2C 、 Figure 2D 、 Figure 2E And Figure 2F shown, an embodiment of the present invention provides a seat cushion airbag for a vehicle seat. The seat cushion airbag includes an airbag 100 with an inner cavity. As Figure 3 And Figure 4 shown, the seat includes a seat pan skeleton 510, and a foam layer is coated on the outside of the seat pan skeleton 510. The airbag 100 is arranged between the seat pan skeleton 510 and the foam layer 520. A generator 400 is arranged in the inner cavity of the airbag 100. At least part of the generator 400 extends out of the inner cavity and is fixed to the seat pan skeleton 510 of the seat. One end of the airbag 100 away from the backrest of the seat is used as the front end ( Figure 1 the right end in Figure 1At the left end (middle left end), when the vehicle does not collide, the generator will not be detonated, and the airbag 100 will be in a folded state (i.e., non-inflated state). At this time, the front end of the airbag 100 has a folding structure 110. After the vehicle collides, the generator will be detonated, causing the airbag 100 to gradually inflate. During the inflation process, since there is no folding at the rear end and there is a folding structure at the front end, the folding structure 110 at the front end will unfold as the airbag 100 gradually inflates, thereby making the front end higher than the rear end and causing the airbag 100 to form an unfolded posture with the front higher and the rear lower as shown in Figure 1 and Figure 4 . This supports and lifts the foaming layer 520, causing the foaming layer 520 to also present a posture with the front higher and the rear lower. As a result, the occupant can be lifted, and the forward movement of the occupant can be blocked, preventing the occupant from diving and avoiding contact between the pelvic region and the skeleton metal parts, which may cause harm to the occupant.

[0037] The front end of the airbag 100 can be folded in any suitable manner to form a folding structure of any suitable shape. For example, the middle part of the front end can be stuffed inward towards the tail end to form a folding structure 110 as shown in Figure 2A . The folding structure 110 includes a first folding part 111 and a second folding part 112, and there is a gap between the first folding part 111 and the second folding part 112; or the front end of the airbag 100 can be stuffed inward towards the tail end and then pulled outward in the opposite direction to form a toothed folding structure 110 as shown in Figure 2B . It includes three folding parts, and there is a gap between any two adjacent folding parts; or the front end of the airbag 100 can be folded upward (or downward) to form a folding structure 110 as shown in Figure 2C . It has two folding parts, one folding part is the body of the airbag 100, and the other folding part is folded above (or below) the body, and there is a gap between the two folding parts; or the front end of the airbag 100 can be folded upward (or downward) multiple times to form a Z-shaped folding structure as shown in Figure 2D ; or first stuff the front end of the airbag 100 inward towards the tail end, then pull it outward in the opposite direction, and then fold it upward (or downward) to form a folding structure 110 as shown in Figure 2E ; or the front end of the airbag 100 can be rolled up (or down) to form a curled folding structure as shown in Figure 2F .

[0038] In some embodiments, the folding portions of the folding structure 110 can be fixed together by a pre-fixing structure (such as pre-stitches). The pre-fixing structure is arranged to fix the folding portions of the folding structure 110 together before the airbag 100 is inflated, and break as the airbag 100 is gradually inflated, so that the folding portions of the folding structure 110 are disengaged from each other. In this way, the airbag 100 can be fully deployed after inflation and form a posture with a higher front and a lower rear. Due to the action of the pre-fixing structure 170, the front end of the airbag 100 will be delayed in deployment, thereby controlling the deployment posture of the airbag 100.

[0039] In some embodiments, at least one connecting strap 200 (such as two) can be provided on the airbag 100 for fixedly connecting with the seat basin frame 510 to prevent the airbag 100 from slipping before inflation and increase its stability.

[0040] As Figure 5A and Figure 5B shown, in some embodiments, the airbag 100 can include an airbag main piece 120 and an airbag side piece 130. The airbag main piece 120 and the airbag side piece 130 are fixedly connected to form an airbag 100 with an inner cavity.

[0041] In some embodiments, the seat cushion airbag may further include a protective piece 300. The protective piece 300 is fixed to the bottom of the airbag 100 and is also fixedly connected to the seat basin frame 510 to prevent friction and damage between the airbag 100 and the seat basin frame 510, playing a protective role. The connecting strap 200 can be fixed on the protective piece 300 or formed integrally with the protective piece 300. Exemplarily, the two connecting straps 200 extend outward from both sides of one end of the protective piece 300. The two connecting straps 200 are used for fixedly connecting with the seat basin frame 510, and the end of the protective piece 300 away from the two connecting straps 200 is also fixedly connected to the seat basin frame 510, thereby preventing the protective piece 300 from slipping before the airbag 100 is inflated and increasing the stability of the seat cushion airbag. As Figure 5B shown, each connecting strap 200 is provided with a connection point with the seat basin frame 510, and two connection points are also provided on the protective piece 300, respectively located at two corners on the end away from the connecting strap 310.

[0042] In some embodiments, both the main airbag piece 120 and the side airbag piece 130 can be formed by folding and are complementary in shape (e.g., both are U-shaped), that is, the side airbag piece 130 can exactly fill the gap of the main airbag piece 120, so that the airbag 100 formed after the main airbag piece 120 and the side airbag piece 130 are fixed is a closed cut piece structure without openings around the circumference. The main airbag piece 120 includes two opposite main piece cantilever portions 121 and a main piece connecting portion 122 connected between the two main piece cantilever portions 121. The side airbag piece 130 includes two opposite side piece cantilever portions 131 and a side piece connecting portion 132 connected between the two side piece cantilever portions 131. The two side piece cantilever portions 131 are respectively located on both sides of the main airbag piece 120, and the top and bottom of each side piece cantilever portion 131 are respectively fixedly connected to the two main piece cantilever portions 121. The side piece connecting portion 132 is located at the free ends of the main piece cantilever portions 121, and the top and bottom of the side piece connecting portion 132 are respectively fixedly connected to the free ends of the two main piece cantilever portions 121; the main piece connecting portion 122 forms the front end of the airbag 100, and the side piece connecting portion 132 forms the rear end of the airbag 100.

[0043] In some embodiments, the main airbag piece 120 and the side airbag piece 130 can be sewn together to achieve fixation, Figure 5B The dotted line in is the sewing line.

[0044] In some embodiments, one of the two main piece cantilever portions 121 can form the top of the airbag 100, and the other can form the bottom of the airbag 100. The protection piece 300 can be fixedly connected to the main piece cantilever portion 121 that forms the bottom of the airbag 100. Specifically, the protection piece 300 and the airbag 100 can also be sewn together.

[0045] In some embodiments, the main airbag piece 120 can be formed by folding a piece of cloth. As Figure 6 shown, when unfolded, the main piece connecting portion 122 is located between the two main piece cantilever portions 121. The left main piece cantilever portion 121 can be folded relative to the main piece connecting portion 122 around the first folding line P1 in the direction of the paper surface inward to be substantially perpendicular to the main piece connecting portion 122. The right main piece cantilever portion 121 can be folded relative to the main piece connecting portion 122 around the second folding line P2 in the direction of the paper surface inward to be substantially parallel to the left main piece cantilever portion 121 to form a U-shaped structure as Figure 5B shown. The first folding line P1 and the second folding line P2 are respectively the two boundary lines of the main piece connecting portion 122.

[0046] In some embodiments, a first exhaust hole 140 may be provided on the airbag main piece 120. The first exhaust hole 140 is used to communicate with the outside and the inner cavity of the airbag 100, so that the gas in the inner cavity of the airbag 100 can be discharged from the first exhaust hole 140, thereby adjusting the stiffness and deployment time of the airbag 100, buffering the detonation force of the buffer generator 400, and avoiding excessive detonation force that may cause negative effects on the occupant. The first exhaust hole 140 may be provided at the front end of the airbag 100 (e.g., on the main piece connection portion 122). In the early stage of inflation of the airbag 100, exhaust can be carried out through the first exhaust hole 140. As the airbag 100 is gradually inflated, the front end of the airbag 100 will bulge upward and contact the seat pan skeleton 510 or the foam layer 520, and the first exhaust hole 140 will be blocked and exhaust will stop. Therefore, the first exhaust hole 140 only exhausts in the initial stage of inflation and will not exhaust after the airbag 100 is fully deployed.

[0047] In some embodiments, a second exhaust hole 150 may be provided on the airbag main piece 120. The second exhaust hole 150 may be provided on the main piece cantilever portion 121 that forms the bottom of the airbag 100. The second exhaust hole 150 is used to communicate with the outside and the inner cavity of the airbag 100, so that the gas in the inner cavity of the airbag 100 can be discharged from the second exhaust hole 150. The second exhaust hole 150 will not be blocked when the airbag 100 is folded or deployed, so it can exhaust continuously. Since the protection piece 300 is fixedly connected to the bottom of the airbag 100 and will cover the bottom of the airbag 100, in order to exhaust smoothly, a through hole for exhaust needs to be opened on the protection piece 300, and this through hole is aligned with the second exhaust hole 150.

[0048] In some embodiments, a cut 160 may be opened on the main piece cantilever portion 121 that forms the bottom of the airbag 100, for putting the generator 400 into the inner cavity of the airbag 100 or taking it out of the inner cavity of the airbag 100 through the cut 160, so as to realize the installation and disassembly of the generator 400. Two through holes 170 may be provided on the main piece cantilever portion 121 that forms the bottom of the airbag 100. Two stud bolts (not shown in the figure) may be provided on the generator 400. The two stud bolts respectively pass through the two through holes 170 and pass through the protection piece 300 and then are fixedly connected to the seat pan skeleton 510.

[0049] In some embodiments, an installation groove 511 (as Figure 3 shown) may be provided on the seat pan skeleton 510, and the generator 400 may be fixed in the installation groove 511.

[0050] As Figure 7A 、 Figure 7B 、 Figure 7C and Figure 7DAs shown, in some embodiments, the airbag side piece 130 can be formed by folding a piece of cloth. When the airbag side piece 130 is deployed, the side piece connection part 132 is located between the two side piece cantilever parts 131. The left side piece cantilever part 131 can be folded relative to the side piece connection part 132 around the third folding line P3 inward (or outward) toward the paper surface to be substantially perpendicular to the side piece connection part 132. The right side piece cantilever part 131 can be folded relative to the side piece connection part 121 around the fourth folding line P4 inward (or outward) toward the paper surface to be substantially perpendicular to the side piece connection part 132. Thus, an airbag side piece 130 substantially in a U shape can be obtained. The side piece connection part 132 is formed as the rear end of the airbag 100, and the height of the side piece connection part 132 can be set to be less than the height of the side piece cantilever part 131, so that the front end of the airbag 100 is higher than the rear end of the airbag 100. In this way, after being detonated, the airbag 100 will present a posture with the front end high and the rear end low. The shape of the airbag side piece 130 after deployment can be any suitable shape, as long as it is ensured that both ends are high and the middle is low. For example, the shapes shown in Figure 7A - 7D can all be used.

[0051] In some embodiments, when the airbag 100 has a folding structure 110, it can also adopt the structure shown in Figure 5B , that is, it includes an airbag main piece 120 and an airbag side piece 130. Its folding structure 110 can be formed on the main piece connection part 122 of the airbag main piece 120. At this time, the height of the side piece connection part 132 of the airbag side piece 130 can be set to be less than or equal to the height of the side piece cantilever part 131.

[0052] For the seat cushion airbag in the embodiment of the present utility model, the front end of the airbag 100 has a folding structure 110, so that the airbag 100 forms a posture with the front end high and the rear end low after being inflated, avoiding the front end of the airbag 100 from piercing through, and thus giving better support force to the legs during the process of lifting the legs and the buttocks of the occupant, effectively preventing the occupant from diving.

[0053] It should be noted that the present utility model (such as the utility model concept, etc.) has been described in the specification of this patent document and / or illustrated in the figures according to exemplary embodiments; the embodiments of the present utility model are presented by way of example only and are not intended to limit the scope of the present utility model. The structure and / or arrangement of the elements of the utility model concept embodied in the present utility model as described in the specification and / or illustrated in the figures are merely illustrative. Although the exemplary embodiments of the present utility model have been described in detail in this patent document, it is readily understood by those of ordinary skill in the art that equivalents, modifications, variations, etc. of the subject matter of the exemplary embodiments and alternative embodiments are possible and are considered to be within the scope of the present utility model; all such subject matter (such as modifications, variations, embodiments, combinations, equivalents, etc.) is intended to be included within the scope of the present utility model. It should also be noted that various / other modifications, variations, substitutions, equivalents, alterations, omissions, etc. can be made in the configuration and / or arrangement of the exemplary embodiments (such as in terms of concept, design, structure, device, form, assembly, construction, means, function, system, process / method, steps, order of process / method steps, operation, operating conditions, performance, materials, composition, combination, etc.) without departing from the scope of the present utility model; all such subject matter (such as modifications, variations, embodiments, combinations, equivalents, etc.) is intended to be included within the scope of the present utility model. The scope of the present utility model is not intended to be limited to the subject matter described in the specification and / or figures of this patent document (such as details, structure, function, materials, behavior, steps, order, system, results, etc.). Considering that the claims of this patent document will be properly construed to cover the full scope of the subject matter of the present utility model (such as including any and all such modifications, variations, embodiments, combinations, equivalents, etc.); it should be understood that the terms used in this patent document are for the purpose of describing the subject matter of the exemplary embodiments and not as a limitation on the scope of the present utility model.

[0054] It should also be noted that, according to exemplary embodiments, the present utility model may include conventional technologies (such as technologies implemented and / or integrated in exemplary embodiments, modifications, variations, combinations, equivalents), or may include any other applicable technologies (present and / or future) having the ability to perform the functions and processes / operations described in the specification and / or illustrated in the figures. All such technologies (such as technologies implemented in the form of embodiments, modifications, variations, combinations, equivalents, etc.) are considered to be within the scope of the present utility model of this patent document.

Claims

1. A seat cushion airbag, used on a vehicle seat, characterized in that: It includes an airbag with an inner cavity, in which a generator is provided, the generator at least partially extends out of the inner cavity and is fixed to the seat, the airbag has a folded state and an unfolded state, the generator is used to inflate the airbag and switch from the folded state to the unfolded state when a vehicle collision occurs; the end of the airbag away from the seat back is used as the front end, and the end of the airbag close to the seat back is used as the rear end, when the airbag is in the folded state, its front end has a folding structure, and the folding structure is configured to unfold as the airbag is gradually inflated, so that the airbag forms an unfolded state with a high front and a low rear.

2. The seat cushion airbag according to claim 1, characterized in that: The folding structure has a plurality of folding parts, each folding part is fixed together by a pre-fixing structure, and the pre-fixing structure is configured to break as the airbag is gradually inflated so as to disconnect each folding part.

3. The seat cushion airbag according to claim 1, characterized in that: The airbag is provided with at least one connecting belt for fixedly connecting with the seat.

4. The seat cushion airbag according to claim 1, characterized in that: The airbag includes an airbag main panel and airbag side panels, which are fixedly connected; the seat cushion airbag also includes a protective panel, which is fixed to the bottom of the airbag to protect the airbag.

5. The seat cushion airbag according to claim 4, characterized in that: The airbag main panel and the airbag side panel are both configured to be formed by folding and have complementary shapes, so that the airbag is formed into a closed panel structure.

6. The seat cushion airbag according to claim 5, characterized in that: The airbag main panel includes two opposite main panel cantilever portions and a main panel connecting portion connected between the two main panel cantilever portions, the airbag side panel includes two opposite side panel cantilever portions and a side panel connecting portion connected between the two side panel cantilever portions, the two side panel cantilever portions are respectively located on both sides of the airbag main panel, and the top and bottom of each side panel cantilever portion are respectively fixedly connected to the two main panel cantilever portions, the side panel connecting portion is located at the free end of the main panel cantilever portion, and the top and bottom of the side panel connecting portion are respectively fixedly connected to the free ends of the two main panel cantilever portions.

7. The seat cushion airbag according to claim 6, characterized in that: The main panel connecting portion is formed as a front end of the airbag bag, and the side panel connecting portion is formed as a rear end of the airbag bag.

8. The seat cushion airbag according to claim 6, characterized in that: One of the two main piece cantilever parts forms the top of the airbag bag, and the other forms the bottom of the airbag bag.

9. The seat cushion airbag according to claim 6, characterized in that: The airbag main panel is configured to be formed by folding one main panel cantilever portion relative to the main panel connecting portion around a first folding line and folding the other main panel cantilever portion relative to the main panel connecting portion around a second folding line.

10. The seat cushion airbag according to claim 6, characterized in that: The airbag side panel is provided so as to be formed by folding one of the side panel cantilever portions relative to the side panel connecting portion about a third folding line and folding the other side panel cantilever portion relative to the side panel connecting portion about a fourth folding line.

11. The seat cushion airbag according to claim 6, characterized in that: The height of the side piece connecting portion is less than or equal to the height of the side piece cantilever portion.

12. The seat cushion airbag according to claim 4, characterized in that: The airbag main plate is provided with a first exhaust hole; the first exhaust hole is configured to exhaust gas in the early stage of inflation of the airbag and stop exhausting gas when the airbag is blocked by the seat after the airbag is fully deployed.

13. The seat cushion airbag according to claim 4, characterized in that: The airbag main sheet is provided with a second exhaust hole, and the second exhaust hole is configured to always exhaust the gas in the inner cavity of the airbag.

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