Seat airbag and seat

Abstract

The application discloses a seat airbag and a seat, which comprise a gas generator and a gas bag, the gas outlet of the gas generator is inserted into the gas bag and fixed on the side of a seat back frame, the gas bag comprises a first section in communication with the gas generator and a second section in communication with the inside of the first section, when the gas generator inflates the first section, the first section extends along the seat cushion and / or in the direction away from the seat cushion, the seat airbag further comprises a first pulling part, the first end of the first pulling part is connected with the seat back frame, and the second end is connected with one end of the second section away from the first section, after the gas generated by the gas generator rushes into the second section, the second section extends along the width direction of the seat back frame under the action of the first pulling part. The application solves the problem that the airbag in the prior art cannot fully extend along the width direction of the seat when being expanded under the impact of the gas.

Description

Technical Field

[0001] This invention relates to the field of airbag technology, specifically to a seat airbag and a seat. Background Technology

[0002] In the existing technology, some cars have small tables or displays installed on the back of the front seats. In the event of a frontal collision, rear passengers may be injured by the impact force when they hit the small tables or displays. For example, if the small tables are opened, they may cause injury to rear passengers.

[0003] In existing multi-segment airbag technology, when the gas generator is detonated, the gas rushes into the multi-segment airbag randomly, causing it to be subjected to forces in different directions and extend in different directions. For example, when an airbag consists of two segments, the first segment can extend forward and backward towards the vehicle, while the second segment can extend along the width of the rear seats between the front and rear seats to protect rear passengers. During the gas impact, gas enters the second segment, inflating it. Because the direction of the gas entering the second segment is uncontrollable, it is impacted towards the rear seats, preventing it from extending completely along the width of the rear seats. This undoubtedly makes it difficult for the second segment of the airbag to reach the rear passengers, failing to provide comprehensive protection, especially for their heads.

[0004] Therefore, a new technological solution is needed. Summary of the Invention

[0005] In view of this, embodiments of the present invention provide a seat airbag and a seat, to at least solve the problem in the prior art that the airbag cannot extend sufficiently along the width direction of the seat when deployed due to gas impact.

[0006] The embodiments of the present invention provide the following technical solutions:

[0007] This invention provides a seat airbag, including a gas generator and a gas bag. The outlet of the gas generator is inserted into the gas bag and fixed to the side of the seat back frame. The gas bag includes a first section communicating with the gas generator and a second section communicating with the first section. When the gas generator inflates the first section, the first section extends along the seat cushion and / or away from the seat cushion. The seat airbag further includes:

[0008] A first pulling part, a first end of which is connected to the seat back frame, and a second end of which is connected to the end of the second section away from the first section, the first pulling part being used to extend the second section along the width direction of the seat back frame;

[0009] Wherein, after the gas generated by the gas generator rushes into the second section, the second section extends along the width direction of the seat back frame under the action of the first pulling part.

[0010] Furthermore, after the first and second sections of the gasbag are inflated, the gasbag covers at least the side of the seat and part of the back of the seat.

[0011] Furthermore, the seat back frame includes:

[0012] A sliding part is provided on the seat back frame;

[0013] The first end of the first pulling part is connected to the seat back frame through the sliding part, and the first end of the first pulling part can move along the width direction of the seat back frame through the sliding part.

[0014] Furthermore, the first end of the first pulling part is provided with a through hole;

[0015] The sliding part includes:

[0016] A sliding rod is provided on the seat back frame along the width direction of the seat back frame, and the sliding rod is slidably sleeved in the through hole at the first end of the first pulling part;

[0017] During the inflation process of the second section, the first end of the first pulling part moves along the slide bar so that the second section extends along the width direction of the seat back frame.

[0018] Furthermore, the seat airbag also includes:

[0019] The second pulling part has a first end connected to the first end of the first section and a second end connected to the seat back frame.

[0020] Furthermore, the seat airbag also includes:

[0021] The third traction part has a first end connected to the second end of the first section, and the second end of the third traction part is connected to the gas generator or the seat back frame, for maintaining stability after the first section is unfolded.

[0022] Furthermore, the seat airbag also includes:

[0023] An air guide bag is disposed within the first section and communicates with the gas generator. The air guide bag is used to move the first section away from the interior of the seat back frame more quickly.

[0024] Furthermore, the air-conducting bag includes:

[0025] At least two air vents are provided at the first end and the second end of the air vent bag, respectively, to inflate the first section and the second section, wherein the second end of the air vent bag is the end closer to the second section.

[0026] Furthermore, the gas bag also includes:

[0027] The third section is located at the end of the second section away from the first section and is connected to the second section;

[0028] In this process, after the second section is inflated, the third section is inflated and extends in a direction perpendicular to the seat back frame to cooperate with the second section and the first section to wrap around the seat.

[0029] Furthermore, the seat airbag also includes:

[0030] The fourth traction part has a first end connected to the third section and a second end connected to the seat back frame, which is used to maintain the stability of the posture of the third section.

[0031] This invention also provides a seat, comprising:

[0032] Seat body;

[0033] The seat airbag as described above is installed at one end of the seat body near the door or at one end of the seat body near the center of the vehicle.

[0034] Compared with the prior art, the beneficial effects that the at least one technical solution adopted in the embodiments of the present invention can achieve include at least:

[0035] The present invention discloses a seat airbag that, when the second section is inflated by the gas generator, uses a first pulling part to pull the second section, thereby enabling the second section to move along the width direction of the seat back frame. This increases the contact area with the rear seat occupants after the second section is deployed, and prevents the second section from deviating too much from the width direction of the seat back frame after inflation. This solves the problem in the prior art where airbags cannot fully extend along the width direction of the seat due to gas impact during deployment. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a front view of a seat airbag according to an embodiment of the present invention;

[0038] Figure 2 This is a front view of the first section of a seat airbag deployed according to an embodiment of the present invention;

[0039] Figure 3 This is a front view of a seat airbag according to an embodiment of the present invention, showing the simultaneous deployment of the first and second sections of the airbag.

[0040] Figure 4 This is a top view of the simultaneous deployment of the first and second sections of a seat airbag according to an embodiment of the present invention.

[0041] Figure 5 This is a side view of a seat airbag according to an embodiment of the present invention, showing the simultaneous deployment of the first and second sections.

[0042] Figure 6 This is a schematic diagram showing the connection between the gas bag and the gas generator in an embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram showing the connection between the first pulling part and the sliding part in an embodiment of the present invention;

[0044] Figure 8 This is a schematic diagram of the structure of the air-guiding bag according to an embodiment of the present invention;

[0045] Figure 9 This is a schematic diagram of a seat airbag having a third section according to an embodiment of the present invention.

[0046] The reference numerals in the drawings of this invention are as follows:

[0047] 10. Gas generator;

[0048] 20. Gas bag; 21. First section; 22. Second section; 23. Third section;

[0049] 30. Seat backrest frame; 31. Sliding part; 311. Slide rod; 312. Slider; 313. Slide rail;

[0050] 40. First pulling part; 41. Through hole;

[0051] 50. Second traction section;

[0052] 60. Third traction section;

[0053] 70. Air duct bag; 71. Air duct hole;

[0054] 80. Fourth traction section. Detailed Implementation

[0055] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0056] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0057] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0058] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0059] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0060] Some cars have small tables installed on the back of the front seats. When the small tables are open, in the event of a frontal collision, the rear passengers will lean forward and may hit the small tables, causing injury, such as the rear passengers being injured by the small tables or screens.

[0061] Based on this, the embodiments of this specification propose a processing solution: such as Figure 1 As shown, a seat airbag of the present invention connects the first end of the first pulling part 40 to the seat back frame 30 and the second end to the end of the second section 22 away from the first section 21. Thus, when the second section 22 is inflated, the second section 22 can extend along the width direction of the seat back frame 30 under the pulling of the first pulling part 40, avoiding the second section 22 from extending towards the rear seat. This solves the problem in the prior art that the airbag cannot fully extend along the width direction of the seat when it is deployed due to the impact of gas.

[0062] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0063] Example 1

[0064] like Figures 1-5 As shown, an embodiment of the present invention provides a seat airbag, including a gas generator 10 and a gas bag 20. The gas outlet of the gas generator 10 is inserted into the gas bag 20 and fixed to the side of the seat back frame 30. The gas bag 20 includes a first section 21 communicating with the gas generator 10 and a second section 22 communicating with the first section 21. When the gas generator 10 inflates the first section 21, the first section 21 extends along the seat cushion and / or away from the seat cushion.

[0065] The first section 21 extends in the length direction of the seat cushion, which refers to the length of the seat cushion from the front to the rear of the vehicle or from the rear to the front of the vehicle when the seat cushion is installed on the vehicle.

[0066] The first section 21 and the second section 22 are two independent air bags, and the interior of the first section 21 is connected to the interior of the second section 22, such as through an air hole.

[0067] The method of inserting the gas outlet of the gas generator 10 into the gas bag 20 is the same as that in the prior art, and will not be described again here.

[0068] The gas generator 10 can be fixed to the side of the seat back frame 30 using fastening elements such as straps.

[0069] When the gas generator 10 is detonated, the gas generated by the gas generator 10 first enters the first section 21, so that the first section 21 extends along the seat cushion and / or away from the seat cushion. After the first section 21 extends to a certain extent, the gas enters the second section 22.

[0070] For example, when the first section 21 extends along the seat cushion and / or away from the seat cushion, the first section 21 extends simultaneously towards the front and rear of the vehicle to protect the occupants in the seat.

[0071] Specifically, when the airbag deploys, the first section 21 expands and deploys first. After the first section 21 breaks through the weakening line on the side of the seat, it drives the second section 22 away from the seat. The first section 21 is in the side airbag state after deployment, and the second section 22 is in the seat back airbag state after deployment.

[0072] The seat airbag also includes a first traction part 40, the first end of which is connected to the seat back frame 30, and the second end of which is connected to the end of the second section 22 away from the first section 21. The first traction part 40 is used to extend the second section 22 along the width direction of the seat back frame 30. After the gas generated by the gas generator 10 rushes into the second section 22, the second section 22 extends along the width direction of the seat back frame 30 under the action of the first traction part 40.

[0073] The first traction part 40 is made of a soft material, such as cloth.

[0074] In some embodiments, the first tensioning portion 40 may also be made of an elastic material, such as rubber.

[0075] Specifically, after the first section 21 unfolds, the second section 22 is moved by the first section 21 to the rear side of the seat back frame 30. At this time, gas enters the second section 22 to cause it to unfold. Since the gas enters the second section 22 in a random direction, such as... Figure 4 As shown, when the second section 22 is not pulled by the first pulling part 40, the second section 22 receives impact forces from multiple directions, which would cause the second section 22 to extend in a direction perpendicular to the seat back frame 30. In this application, the second section 22 is pulled by the first pulling part 40, so that the second section 22 does not extend in a direction perpendicular to the seat back frame 30 under the pulling force applied by the first pulling part 40, but extends in the width direction of the seat back frame 30, thereby increasing the contact area between the second section 22 and the occupant on the seat behind the seat back frame 30, and preventing the second section 22 of the airbag 20 from extending to the seat behind the seat back frame 30, which would prevent the occupant from contacting the second section 22.

[0076] The function of the first traction part 40 is to limit the extension of the second section 22 toward the rear of the seat back frame 30 when the second section 22 is inflated.

[0077] When the first section 21 and the second section 22 of the gasbag 20 are inflated, the gasbag 20 covers at least the side of the seat and part of the back of the seat, wherein the back of the seat is the side facing the rear seat.

[0078] For example, after both the first section 21 and the second section 22 are inflated, the gas bag 20 takes on an L-shaped structure.

[0079] Preferably, after the first section 21 and the second section 22 of the gas bladder 20 are inflated, the gas bladder 20 completely covers the sides and back of the seat.

[0080] In some of these embodiments, the first end of the first tensioning part 40 is fixedly connected to the seat back frame 30, and when the second section 22 is fully extended, the first tensioning part 40 is taut to maintain the stability of the posture of the second section 22.

[0081] For example, the first pulling part 40 can be a pulling strap.

[0082] In some of these embodiments, the first end of the first traction portion 40 is slidably connected to the seat back frame 30.

[0083] Specifically, such as Figure 2 As shown, the seat back frame 30 includes a sliding part 31, which is disposed on the seat back frame 30; wherein, the first end of the first pulling part 40 is connected to the seat back frame 30 through the sliding part 31, and the first end of the first pulling part 40 can move along the width direction of the seat back frame 30 through the sliding part 31.

[0084] When the second section 22 is inflated and extended, the first pulling part 40 is limited by its own length and will not extend with the second section 22. At this time, the second end of the first pulling part 40 moves with the extension of the second section 22, while the first end of the first pulling part 40 can move along the width direction of the seat back frame 30 through the sliding part 31. At the same time, due to the length limitation of the first pulling part 40, the second section 22 can also move completely along the width direction of the seat back frame 30, so that the second section 22 will not extend to the rear seat.

[0085] For example, the first end of the first pulling part 40 can move along the width direction of the seat back frame 30 via the sliding part 31, which can be the first end of the first pulling part 40 moving from the first edge position of the seat back frame 30 to the middle position or from the middle position to the second edge position via the sliding part 31.

[0086] When the first end of the first pulling part 40 is slidably connected to the seat back frame 30, the length of the first pulling part 40 is such that when the second section 22 is stretched open, it can move completely along the width direction of the seat back frame 30 without extending to the rear seats.

[0087] Furthermore, such as Figure 3 , 4 As shown in Figure 6, the first end of the first pulling part 40 is provided with a through hole 41; the sliding part 31 includes a slide rod 311, which is disposed on the seat back frame 30 along the width direction of the seat back frame 30, and the slide rod 311 is slidably sleeved in the through hole 41 at the first end of the first pulling part 40; wherein, during the inflation of the second section 22, the first end of the first pulling part 40 moves along the slide rod 311 so that the second section 22 extends along the width direction of the seat back frame 30.

[0088] The first pulling part 40 can be configured as a pull strap made of fabric, and the through hole 41 can be formed by the rolled edge of the end of the pull strap.

[0089] The slide bar 311 can be an existing structure of the seat back frame 30, or it can be a structure added to the seat back frame 30 later.

[0090] When the second section 22 extends and causes the first end of the first pulling part 40 to slide on the slide bar 311, the first end of the first pulling part 40 can slide from the first edge position of the slide bar 311 to the middle position, or from the middle position to the second edge position.

[0091] For example, at the initial stage of the deployment of the second section 22, the first end of the first pulling part 40 can slide from the first position to the second position, and throughout the entire deployment process of the second section 22, the first end of the first pulling part 40 can move back and forth between the first position and the second position to control the second section 22 to move closer to the seat back and unfold in the vehicle width direction. The first position can be the side of the slide rod 311 closer to the first section 21, and the second position can be the side of the slide rod 311 away from the first section 21.

[0092] In some embodiments, in order to increase the sliding ability between the first pulling part 40 and the slide bar 311, a lubrication layer, such as a lubricant or a lubricating coating, may be provided on the slide bar 311.

[0093] Preferably, the slide bar 311 is an existing structure on the seat back frame 30. By reusing the existing structure on the seat back frame 30, modifications to the seat back frame 30 are reduced, and the installation difficulty is also reduced.

[0094] In some of these embodiments, when the first end of the first pulling part 40 is slidably connected to the seat back frame 30, the second end of the first pulling part 40 is fixedly connected to the second section 22, the first end of the first pulling part 40 is fixedly connected to the sliding part 31, and the sliding part 31 is slidably connected to the seat back frame 30.

[0095] Preferably, such as Figure 7 As shown, the sliding part 31 includes a slider 312, which cooperates with and is slidably connected to the slide rail 313 provided on the seat back frame 30, so that the first end of the first pulling part 40 can be slidably moved along the width direction of the seat back frame 30 through the sliding part 31.

[0096] For example, the slider 312 can be slidably mounted on the slide rail 313 provided on the seat back frame 30.

[0097] The slide rail 313 can be an existing structure of the seat back frame 30, or it can be a slide rail 313 added to the seat back frame 30.

[0098] In some embodiments, the seat airbag further includes a second traction portion 50, the first end of which is connected to the first end of the first segment 21, and the second end of which is connected to the seat back frame 30.

[0099] The first end of the first segment 21 can be the upper end of the first segment 21.

[0100] For example, the first end of the second traction part 50 is connected to the side of the upper end of the first section 21 away from the second section 22, so as to maintain the stability of the posture of the first section 21 after inflation.

[0101] The second pulling part 50 is used to pull the first section 21 and to maintain the stability of the first section 21's posture when the first section 21 is inflated.

[0102] The second pulling part 50 can be a pull belt, which can be made of cloth or elastic fabric.

[0103] In some embodiments, the seat airbag further includes a third traction section 60, the first end of which is connected to the second end of the first section 21, and the second end of which is connected to the gas generator 10 or the seat back frame 30, for maintaining stability after the first section 21 is deployed.

[0104] The third pulling part 60 can be a pull belt, which can be made of fabric.

[0105] The second end of the third pulling part 60 can be connected to the gas generator 10 by bolts or to the mounting bracket of the gas generator 10.

[0106] In some embodiments, there may be multiple third pulling parts 60 to maintain the stability of the posture of the first segment 21.

[0107] In some of these embodiments, such as Figure 8 As shown, the seat airbag also includes an air duct 70, which is disposed within the first section 21 and communicates with the gas generator 10. The air duct 70 is used to move the first section 21 away from the interior of the seat back frame 30 more quickly.

[0108] The gas guide bag 70 is used to prevent the high-temperature gas generated by the gas generator 10 from directly impacting the gas bag 20, and is also used for diversion.

[0109] Furthermore, the air guide bag 70 includes at least two air guide holes 71, which are respectively disposed at the first end and the second end of the air guide bag 70 to inflate the first section 21 and the second section 22 respectively, wherein the second end of the air guide bag 70 is the end closer to the second section 22.

[0110] Specifically, the air guide hole 71 provided at the first end of the air guide bag 70 is used to guide the airflow to the first section 21 so that the first section 21 expands and extends; the air guide hole 71 provided at the second end of the air guide bag 70 is used to guide the airflow to the second section 22 so that the second section 22 expands and extends rapidly.

[0111] In some of these embodiments, such as Figure 9 As shown, the gas bag 20 also includes a third section 23, which is located at the end of the second section 22 away from the first section 21 and is connected to the second section 22; wherein, after the second section 22 is inflated, the third section 23 is inflated and extends in a direction perpendicular to the seat back frame 30 to cooperate with the second section 22 and the first section 21 to wrap the seat.

[0112] Specifically, after the third section 23 is inflated, the first section 21, the second section 22, and the third section 23 together form a "U", "H" or "h" shape to wrap around the seat and protect the safety of the occupants.

[0113] Furthermore, the seat airbag also includes a fourth traction part 80, the first end of which is connected to the third section 23 and the second end of which is connected to the seat back frame 30, for maintaining the stability of the posture of the third section 23.

[0114] In some embodiments, the fourth traction portion 80 is slidably disposed on the seat back frame 30 via other sliding structures, so that the third section 23 extends along the seat cushion and / or away from the seat cushion, so that the gas bag 20 can be in the form of a "U", "H" or "h" shape.

[0115] The fourth pulling part 80 can be a pull belt, which can be made of fabric.

[0116] In some embodiments, there may be multiple fourth pulling parts 80 to maintain the stability of the posture of the third segment 23.

[0117] An embodiment of the present invention provides a seat airbag in which the side airbag and the rear seat airbag are integrated, thereby preventing rear passengers from colliding with the small table or screen behind the seat, effectively protecting the safety of rear passengers. The first pulling part can also limit the contact area of ​​the passenger's head and the effective thickness of the second section 22.

[0118] Example 2

[0119] This invention provides a seat, including a seat body and a seat airbag as described in any of Embodiment 1, wherein the seat airbag is installed at one end of the seat body near the door or at one end of the seat body near the center of the vehicle.

[0120] By installing the seat airbag on the side of the seat body closer to the door and on the side of the seat body closer to the center of the vehicle, the flexibility of seat airbag installation can be increased.

[0121] In this specification, the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, for the product embodiments described later, since they correspond to the methods, the descriptions are relatively simple, and the relevant parts can be referred to the descriptions in the system embodiments.

[0122] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A seat airbag, comprising a gas generator and a gas bag, wherein the outlet of the gas generator is inserted into the gas bag and fixed to the side of the seat back frame, the gas bag comprising a first section communicating with the gas generator and a second section communicating with the first section, characterized in that, When the gas generator inflates the first section, the first section extends along the seat cushion and / or away from the seat cushion, and the seat airbag further includes: The first pulling part has a first end connected to the seat back frame and a second end connected to the end of the second section away from the first section. The first pulling part is used to extend the second section along the rear width direction of the seat back frame. The first section is in a side airbag state after being deployed, and the second section is in a seat back airbag state after being deployed. A sliding part is provided on the seat back frame; Wherein, the first end of the first pulling part is connected to the seat back frame through the sliding part, and the first end of the first pulling part can move along the width direction of the seat back frame through the sliding part; Wherein, after the gas generated by the gas generator rushes into the second section, the second section extends along the width direction of the seat back frame under the action of the first pulling part.

2. The seat airbag according to claim 1, characterized in that, After the first and second sections of the gasbag are inflated, the gasbag covers at least the side of the seat and part of the back of the seat.

3. The seat airbag according to claim 1, characterized in that, The first end of the first pulling part is provided with a through hole; The sliding part includes: A sliding rod is provided on the seat back frame along the width direction of the seat back frame, and the sliding rod is slidably sleeved in the through hole at the first end of the first pulling part; During the inflation process of the second section, the first end of the first pulling part moves along the slide bar so that the second section extends along the width direction of the seat back frame.

4. The seat airbag according to claim 1, characterized in that, Also includes: The second pulling part has a first end connected to the first end of the first section and a second end connected to the seat back frame.

5. The seat airbag according to claim 1, characterized in that, Also includes: The third traction part has a first end connected to the second end of the first section, and the second end of the third traction part is connected to the gas generator or the seat back frame, for maintaining stability after the first section is unfolded.

6. The seat airbag according to claim 1, characterized in that, Also includes: An air guide bag is disposed within the first section and communicates with the gas generator. The air guide bag is used to move the first section away from the interior of the seat back frame more quickly.

7. The seat airbag according to claim 6, characterized in that, The air-conducting bag includes: At least two air vents are provided at the first end and the second end of the air vent bag, respectively, to inflate the first section and the second section, wherein the second end of the air vent bag is the end closer to the second section.

8. The seat airbag according to claim 1, characterized in that, The gas bag also includes: The third section is located at the end of the second section away from the first section and is connected to the second section; In this process, after the second section is inflated, the third section is inflated and extends in a direction perpendicular to the seat back frame to cooperate with the second section and the first section to wrap around the seat.

9. The seat airbag according to claim 8, characterized in that, Also includes: The fourth traction part has a first end connected to the third section and a second end connected to the seat back frame, which is used to maintain the stability of the posture of the third section.

10. A type of seat, characterized in that, include: Seat body; The seat airbag as described in any one of claims 1 to 9 is installed at one end of the seat body near the door or at one end of the seat body near the center of the vehicle.

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