Airbag device for a seat and airbag system

Abstract

This invention discloses a safety airbag device and system for vehicle seats, relating to the field of vehicle safety technology. One specific embodiment of the airbag device includes: an airbag and a gas generator for inflating the airbag; when the airbag device is installed in a vehicle seat, the airbag and the gas generator are distributed on both sides of the seat frame based on a communicating space formed in the seat frame, the communicating space being used to allow gas output from the gas generator to enter the airbag. This embodiment arranges the airbag and gas generator on both sides of the seat frame, reducing the space occupied and stabilizing the airbag's deployment posture.

Description

Technical Field

[0001] This invention relates to the field of vehicle safety technology, and more particularly to airbag devices and airbag systems for seats. Background Technology

[0002] Vehicles use airbags to maximize the protection of occupants seated in a collision; for example, airbags are installed in the vehicle's seat frame. In existing seat frame airbags, because there is no installation space on the occupant side of the seat frame, the airbag and inflator are installed together on the occupant-free side of the seat frame, taking up a lot of space, making airbag deployment difficult, and resulting in unstable posture. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a safety airbag device and a safety airbag system for a seat, which arranges the airbag and gas generator on both sides of the seat frame to reduce the space occupied and stabilize the deployment posture of the airbag.

[0004] To achieve the above objectives, according to one aspect of the present invention, a safety airbag device for a seat is provided.

[0005] The airbag device for a seat according to an embodiment of the present invention includes: an airbag and a gas generator for inflating the airbag; when the airbag device is installed in a vehicle seat, the airbag and the gas generator are distributed on both sides of the seat frame based on a communicating space opened in the seat frame, the communicating space being used to allow gas output by the gas generator to enter the airbag.

[0006] Optionally, the airbag is located on the occupant side of the seat frame, and the gas generator is installed on the occupant-away side of the seat frame; or, the airbag is located on the occupant-away side of the seat frame, and the gas generator is installed on the occupant-away side of the seat frame.

[0007] Optionally, the airbag device further includes: an air guide tube passing through the communicating space; and a first end of the air guide tube connected to the air outlet of the gas generator, and a second end connected to the air bag.

[0008] Optionally, the air guide tube is straight, and the outlet of the gas generator is aligned with the communicating space; or, the air guide tube includes: a straight portion passing through the communicating space and a vertical portion connecting the straight portion; the extending direction of the vertical portion is perpendicular to the extending direction of the straight portion; and the outer end of the vertical portion is the first end, and the outer end of the straight portion is the second end.

[0009] Optionally, the air inlet of the air bag covers and fixes the second end of the air guide tube; or, a portion of the air bag near the air inlet passes through the communicating space and covers the air guide tube, and is fixed to the first end of the air guide tube; and the air bag is also fixed to the second end of the air guide tube.

[0010] Optionally, the gas generator is interference-fitted or threaded to the first end of the gas guide tube; or, the gas bag is fixed to the second end of the gas guide tube by a clamp, or the gas bag is fixed to the first and second ends of the gas guide tube by a clamp.

[0011] Optionally, the communicating space includes: a through hole for the air guide tube to pass through, and a slot for the uninflated air bag to pass through to install the airbag device; and the slot communicates with the through hole.

[0012] Optionally, part or all of the uninflated airbag is arranged in a folded or flat manner on one side of the seat frame; or, the seat frame has at least one mounting hole for the gas generator.

[0013] Optionally, the seat frame is: a side panel frame, a backrest frame, a seat basin frame, or a headrest frame; when the seat frame is a side panel frame, the air bag is located on the side of the side panel frame closer to the occupant, and the gas generator is installed on the side of the side panel frame farther from the occupant; or, the air bag is located on the side of the side panel frame farther from the occupant, and the gas generator is installed on the side of the side panel frame closer to the occupant; and, when the seat frame is a backrest frame, a seat basin frame, or a headrest frame, the air bag is located on the side of the backrest frame, the seat basin frame, or the headrest frame closer to the occupant, and the gas generator is installed on the side of the backrest frame, the seat basin frame, or the headrest frame farther from the occupant.

[0014] To achieve the above objectives, according to another aspect of the present invention, a safety airbag device for a seat is provided.

[0015] An embodiment of the present invention provides a safety airbag device for a seat, comprising: an airbag and a gas generator for inflating the airbag; when the safety airbag device is installed in a vehicle seat, the airbag and the gas generator are distributed on both sides of the side panel frame based on a communicating space formed in the side panel frame of the seat, the communicating space being used to allow gas output by the gas generator to enter the airbag.

[0016] To achieve the above objectives, according to another aspect of the present invention, a safety airbag system for a seat is provided.

[0017] The airbag system for a vehicle seat according to an embodiment of the present invention includes: a first airbag device installed on a first side panel of a vehicle seat, and a second airbag device installed on a second side panel of the vehicle seat; each of the first and second airbag devices includes: an airbag and a gas generator for inflating the airbag; when the first and second airbag devices are installed on the vehicle seat: the airbag and gas generator of the first airbag device are distributed on both sides of the frame of the first side panel based on a first communicating space opened on the frame of the first side panel; the airbag and gas generator of the second airbag device are distributed on both sides of the frame of the second side panel based on a second communicating space opened on the frame of the second side panel; and the airbag of the first and second airbag devices are located near the occupant side for wrapping and / or clamping the occupant after deployment; the gas generator of the first and second airbag devices is installed away from the occupant side.

[0018] Optionally, the airbag of the first airbag device is supported by the first side panel and deploys towards the occupant and the front of the vehicle; the airbag of the second airbag device is supported by the second side panel and deploys towards the occupant and the front of the vehicle; and the airbags of the first airbag device and the airbags of the second airbag device form a triangular area that wraps around and / or clamps the occupant after deployment.

[0019] Optionally, each of the first and second airbag devices, after deployment, includes: an inner cavity for clamping the occupant and an outer cavity for preventing the occupant from leaning forward; the inner cavity is located between the outer cavity and the occupant, and the outer cavity is located between the inner cavity and the vehicle seat; and the minimum distance between the outer cavity of the first airbag device and the outer cavity of the second airbag device is less than a preset distance threshold, and the minimum distance between the inner cavity of the first airbag device and the inner cavity of the second airbag device is less than or equal to two-thirds of the width of the seat back.

[0020] To achieve the above objectives, according to another aspect of the present invention, a vehicle is provided.

[0021] The vehicle in this embodiment of the invention includes the above-described airbag device or airbag system for a seat.

[0022] According to the technical solution of the present invention, one embodiment of the invention has the following advantages or beneficial effects: The airbags and gas generators are arranged on both sides of the seat frame based on the connecting space opened in the seat frame. The separate arrangement of the airbags and gas generators reduces the installation space occupied by the airbags in actual working conditions compared to their centralized arrangement. When the airbags deploy, they are supported by the seat frame and are not affected by the gas generator, resulting in a stable deployment posture. The embodiments of the present invention also provide an airbag system installed on the two side panels of the vehicle seat. When the two airbags located on both sides of the occupant deploy, they can clamp the occupant to reduce or avoid injury from a vehicle collision, and are applicable to scenarios such as zero-gravity seats.

[0023] The further effects of the aforementioned unconventional alternative methods will be explained below in conjunction with specific implementation methods. Attached Figure Description

[0024] The accompanying drawings are provided to better understand the invention and are not intended to unduly limit the scope of the invention. Wherein: Figure 1 This is a schematic diagram of the installation position of the airbag device for the seat in an embodiment of the present invention; Figure 2 This is a first schematic diagram of a safety airbag device for a seat in an embodiment of the present invention; Figure 3 This is a second schematic diagram of a safety airbag device for a seat in an embodiment of the present invention; Figure 4 This is a third schematic diagram of a safety airbag device for a seat in an embodiment of the present invention; Figure 5 This is a fourth schematic diagram of a safety airbag device for a seat in an embodiment of the present invention; Figure 6 This is a fifth schematic diagram of a safety airbag device for a seat in an embodiment of the present invention; Figure 7 This is a schematic diagram of a safety airbag system for a seat in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures: 10: Air bag; 20: Gas generator; 30: Communicating space; 31: Through hole; 32: Groove; 33: Gas generator mounting part; 34: Gas generator mounting hole; 35: Clamp; 40: Air duct; 41: Straight part; 42: Vertical part; 43: First end; 44: Second end; 50: Seat frame; 51: Side panel; 52: Headrest; 53: Backrest; 54: Seat basin; 60: First side panel; 61: Second side panel; 62: Inner cavity; 63: Outer cavity. Detailed Implementation

[0026] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These details should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0027] It should be noted that the terms "set", "install", and "connect" in the following instructions can refer to a fixed fit between two objects or a non-fixed fit (such as a sliding connection); they can refer to a detachable fit (such as a bolt and nut connection) or a non-detachable fit (such as welding); they can refer to a direct fit or an indirect fit mediated by a third object.

[0028] In the description of this specification, unless otherwise expressly defined, "above" or "below" a second target can include direct contact between the first and second targets, or contact between the first and second targets through another target. "Above," "on top of," and "over" a second target includes the first target being directly above or diagonally above the second target, or simply indicates that the height of the first target is greater than that of the second target. "Below," "below," and "under" a second target includes the first target being directly below or diagonally below the second target, or simply indicates that the height of the first target is less than that of the second target.

[0029] In the description of this manual, the term "up" refers to the direction from the vehicle floor to the vehicle roof, and "down" is the opposite of "up". "Forward" refers to the direction away from the seat back within the seating space (i.e., the space where the seat accommodates the occupants), and "rear" is the opposite of "forward".

[0030] Furthermore, the terms "first" and "second" are used only for descriptive distinction and have no specific meaning. Where there is no conflict, embodiments of the present invention and the technical features thereof can be combined with each other.

[0031] Figure 1 This is a schematic diagram of the installation position of the airbag device for the seat in an embodiment of the present invention. Figure 2 This is a first schematic diagram of a safety airbag device for a seat in an embodiment of the present invention. Please refer to [link / reference]. Figure 1 , 2 .

[0032] The airbag device for a seat according to an embodiment of the present invention includes an airbag 10 and a gas generator 20 for inflating the airbag 10. The gas generator 20 can be any type of gas generator, such as a pyrotechnic gas generator, a gas storage gas generator, a hybrid gas generator (combining pyrotechnic and gas storage gas generators), etc.

[0033] The vehicle seat may include a headrest 52, a backrest 53, side panels 51, and a seat 54. The side panels 51 are located on both sides of the backrest 53 and may or may not be on the same plane as the backrest 53. Each of these components may include a frame, foam, or upholstery. In this embodiment of the invention, the airbag device can be installed in the frame of the headrest 52, backrest 53, side panels 51, and seat 54, for example, the headrest frame, backrest frame, side panel frame, and seat 54 frame, collectively referred to as the seat frame 50. The following explanation uses the case where the airbag device is installed in the side panel frame as an example.

[0034] When an airbag device is installed in a vehicle seat to protect the occupants, the airbag 10 and the gas generator 20 are distributed on both sides of the seat frame 50 based on the communication space 30 opened in the seat frame 50. The communication space 30 is used to allow the gas output by the gas generator 20 to enter the airbag 10.

[0035] In some embodiments, the airbags 10 are located on the occupant side of the seat frame, for example, all airbags 10 are located on the occupant side of the seat frame 50, or the main body of the airbags 10 (including most of the airbags) is located on the occupant side of the seat frame 50; the gas generator 20 is installed on the occupant side of the seat frame 50. In other embodiments, the airbags 10 are located on the occupant side of the seat frame 50, for example, all airbags 10 are located on the occupant side of the seat frame 50, or the main body of the airbags 10 is located on the occupant side of the seat frame 50, while the gas generator 20 is installed on the occupant side of the seat frame 50. As an alternative, some or all of the uninflated airbags 10 can be arranged in a folded or flat manner on one side of the seat frame 50; the folding method can be rolling, Z-folding, or a combination of both. Tear lines can be provided in the foam and skin to facilitate the deployment of the airbags 10. For example, the seat frame 50 may have at least one mounting hole 34 (e.g., threaded hole) for a gas generator 20 for mounting with a corresponding mounting element 33 (e.g., bolt).

[0036] Optionally, the airbag device may further include: an air duct 40 passing through the communicating space 30, the air duct 40 may have two ends, a first end 43 being one end connected to the air outlet of the gas generator 20, and a second end 44 being the other end, which may be connected to the airbag 10. For example, the first end 43 of the air duct 40 may be connected to the air outlet of the gas generator 20 in any applicable manner, for example... Figure 3The threaded connection shown Figure 4 The interference fit is shown. The air guide tube 40 can be made of metal or high-temperature resistant resin, etc.

[0037] In one embodiment, the air duct 40 is straight. Preferably, the outlet of the gas generator 20 is aligned with the communicating space 30. For example, the gas generator 20 has 8 to 10 outlet holes, with at least three outlet holes aligned with the communicating space 30. In this way, the gas emitted by the gas generator 20 can directly enter the air bag 10, thereby improving the inflation efficiency. A straight air duct can be found in [reference needed]. Figure 5 Straight air ducts can be made of rigid materials such as metal and resin, or they can be made of soft fabric.

[0038] In another embodiment, the air duct 40 includes: a straight portion 41 passing through the communicating space 30 and a vertical portion 42 connecting the straight portion 41. The extending direction of the vertical portion 42 is perpendicular to the extending direction of the straight portion 41. The outer end of the vertical portion 42 (the inner end is the connection end between the vertical portion 42 and the straight portion 41, and the outer end is the other end) is the first end 43 of the air duct 40, and the outer end of the straight portion 41 is the second end 44 of the air duct 40. For example, the air duct 40 in this embodiment is L-shaped. See [reference needed]. Figures 2 to 4 The air duct 40 in this embodiment can be made of rigid materials such as metal or resin.

[0039] For example, the air bag 10 has two fixing methods. In the first fixing method, the air inlet of the air bag 10 covers and fixes the second end 44 of the air guide tube 40. The fixing method can be a clamp 35. The entire air bag 10 is located on the opposite side of the gas generator 20. See [reference needed]. Figure 2 , Figure 4 and Figure 5 In the second fixing method, the portion of the air bag 10 near the air inlet passes through the communicating space 30 and covers the air guide tube 40. The end of this portion of the air bag covers and fixes the first end 43 of the air guide tube 40. The fixing method can be a clamp 35. It can be understood that the inner side of the first end 43 of the air guide tube 40 is connected to the air outlet of the gas generator 20. Additionally, another portion of the air bag, besides the above-mentioned portion, is fixed to the second end 44 of the air guide tube 40. The fixing method can also be a clamp 35. See [link to relevant documentation]. Figure 6 .

[0040] In one embodiment, see Figure 1The connecting space 30 includes a through hole 31 for the air duct 40 to pass through. Based on this structure, when installing an airbag device, the air duct 40 can be installed through the through hole 31, and then the gas generator 20 and the airbag 10 can be installed on both sides of the air duct 40. In another embodiment, in addition to the through hole 31, the connecting space 30 also includes a groove 32 for the uninflated airbag 10 to pass through for airbag device installation; this groove 32 connects to the through hole 31. Based on this structure, when installing an integrated airbag device (the air duct 40, gas generator 20, and airbag 10 are already connected), the airbag 10 can pass from one side of the seat frame 50 through the groove 32 to the other side, then the air duct 40 is installed in the through hole 31, and subsequently the gas generator 20 is fixed to the seat frame 50. It is understood that the connecting space can be any other suitable shape, such as any shape capable of installing the air duct.

[0041] For example, the seat frame 50 described above can be a side panel frame, a backrest frame, a seat frame, or a headrest frame. When the seat frame 50 is a side panel frame, the air bag is located on the side of the side panel frame closer to the occupant, and the gas generator is installed on the side of the side panel frame furthest from the occupant; or, the air bag is located on the side of the side panel frame furthest from the occupant, and the gas generator is installed on the side of the side panel frame closer to the occupant. When the seat frame 50 is a backrest frame, a seat frame, or a headrest frame, the air bag 10 is located on the side of the backrest frame, seat frame, or headrest frame closer to the occupant, and the gas generator 20 is installed on the side of the backrest frame, seat frame, or headrest frame furthest from the occupant; of course, in some scenarios, the air bag 10 may also be located on the side of the backrest frame, seat frame, or headrest frame furthest from the occupant, and the gas generator 20 may be installed on the side of the backrest frame, seat frame, or headrest frame closer to the occupant. For example, for an airbag device installed in the headrest frame, a smaller airbag 10 can be placed on the side of the headrest frame closer to the occupant. When the vehicle is rear-ended, the airbag 10 deploys to enhance the protection of the occupant's head.

[0042] In one embodiment, when the airbag 10 is installed on the occupant side of the seat frame 50, the deployed airbag 10 can proactively push the occupant to a safe location during a pre-collision event, for example, pushing the occupant away from the door when a collision is imminent. Optionally, when the airbag 10 is installed on the occupant-free side of the seat frame 50, an elastic guide plate can be fixed between the airbag 10 and the foam on the occupant-free side of the seat frame 50. Figures 1 to 7 (Not shown) to reduce the friction between the airbag 10 and the foam when the airbag 10 deploys, so as to prevent the foam from squeezing the airbag 10 and to allow the airbag 10 to deploy smoothly according to the designed shape. For example, the elastic guide plate can be fixed to the seat frame 50 by means of cable ties or the like.

[0043] This invention also provides an airbag device for a vehicle seat, comprising: an airbag 10 and a gas generator 20 for inflating the airbag 10. When the airbag device is installed in a vehicle seat, the airbag 10 and the gas generator 20 are distributed on both sides of the side panel frame based on a communicating space 30 formed in the side panel frame of the seat. The communicating space 30 allows gas output from the gas generator 20 to enter the airbag 10. The airbag device of this embodiment may also have any of the previously described technical features.

[0044] In this way, by arranging the airbag and gas generator on both sides of the seat frame based on the connecting space opened on the seat frame, the separate arrangement of the airbag and gas generator will reduce the space occupied by the airbag installation in actual working conditions compared to the centralized arrangement; when the airbag is deployed, it is supported by the seat frame and is not affected by the gas generator, so the deployment posture is stable.

[0045] Figure 7 This is a schematic diagram of a safety airbag system for a car seat in an embodiment of the present invention. See also: Figure 7 .

[0046] The airbag system for a vehicle seat according to an embodiment of the present invention includes: a first airbag device installed on a first side panel 60 in the vehicle seat and a second airbag device installed on a second side panel 61 in the vehicle seat. The first side panel 60 and the second side panel 61 are side panels on the left and right sides of the same seat.

[0047] Each of the first and second airbag devices includes: an airbag 10 and a gas generator 20 for inflating the airbag 10. When the first and second airbag devices are installed in a vehicle seat: the airbag 10 and gas generator 20 of the first airbag device are distributed on both sides of the frame of the first side panel based on a first connecting space formed on the frame of the first side panel; the airbag 10 and gas generator 20 of the second airbag device are distributed on both sides of the frame of the second side panel based on a second connecting space formed on the frame of the second side panel. It is understood that the first connecting space is used to allow gas output from the gas generator 20 of the first airbag device to enter the airbag 10 of the first airbag device, and the second connecting space is used to allow gas output from the gas generator 20 of the second airbag device to enter the airbag 10 of the second airbag device.

[0048] The airbags 10 of the first and second airbag devices are located on the side panel near the occupant, for wrapping and / or clamping the occupant after deployment; the gas generators 20 of the first and second airbag devices are mounted on the side panel away from the occupant. The airbag device of this embodiment may also have any of the previously described technical features.

[0049] In one embodiment, the airbag 10 of the first airbag device is supported by the first side panel 60 and deploys towards the occupant and the front of the vehicle, while the airbag 10 of the second airbag device is supported by the second side panel 61 and deploys towards the occupant and the front of the vehicle; after deployment, the airbags 10 of the first and second airbag devices form a triangular area that wraps around and / or clamps the occupant (see...). Figure 7 (The triangular area in the middle).

[0050] As an optional embodiment, each airbag 10 in the first and second airbag devices, after deployment, includes: an inner cavity 62 for clamping the occupant and an outer cavity 63 for preventing the occupant from leaning forward. The inner cavity 62 is stacked on the occupant-facing surface of the outer cavity 63, with the inner cavity 62 located between the outer cavity 63 and the occupant, and the outer cavity 63 located between the inner cavity 62 and the vehicle seat. Preferably, the minimum distance between the outer cavities 63 of the first and second airbag devices is less than a preset distance threshold, thereby causing the outer cavities 63 of the two airbag devices to surround the occupant to prevent the body from leaning forward. The above distance threshold can be set as needed, for example, set to 1 cm, and the minimum distance between the outer cavities 63 can be zero.

[0051] Optionally, the minimum distance between the inner cavity 62 of the first airbag device and the inner cavity 62 of the second airbag device may be less than or equal to two-thirds of the width of the seat back, so that the inner cavity 62 can clamp the occupant. Exemplarily, the inner cavity 62 and outer cavity 63 of the above airbag system abut against the occupant's body with appropriate rigidity, thickness and size, clamping and stabilizing the occupant's body from all sides.

[0052] According to the above technical solution, when the two airbags located on both sides of the occupant are deployed, they can clamp the occupant to reduce or avoid injury to the occupant in a vehicle collision. This solution is applicable to both conventional seat scenarios and zero-gravity seat scenarios.

[0053] It is understood that the driver airbag in this embodiment of the invention may also include a sensor for sensing that a collision is about to occur and a controller for controlling the activation of the gas generator 20.

[0054] This specification also provides a vehicle that includes the airbag device or airbag system for the seat described in the above embodiments.

[0055] Those skilled in the art should understand that the embodiments described in the specification are all preferred embodiments, and the components involved are not necessarily necessary for implementing the present invention.

[0056] According to the technical solution of the present invention, the airbags and gas generators are arranged on both sides of the seat frame based on the communicating space opened in the seat frame. Compared with the centralized arrangement of the airbags and gas generators, the separate arrangement of the airbags and gas generators reduces the space occupied by the airbags in actual working conditions. When the airbags are deployed, they are supported by the seat frame and are not affected by the gas generators, resulting in a stable deployment posture. The present invention also provides an airbag system installed on the two side panels of the vehicle seat. When the two airbags located on both sides of the occupant are deployed, they can clamp the occupant to reduce or avoid injury to the occupant in a vehicle collision, which is applicable to scenarios such as zero-gravity seats.

[0057] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A safety airbag device for a car seat, comprising: An air bag (10) and a gas generator (20) for inflating the air bag (10); characterized in that, When the airbag device is installed in a vehicle seat, the airbag (10) and the gas generator (20) are distributed on both sides of the seat frame (50) based on a communication space (30) opened on the seat frame (50), and the communication space (30) is used to allow the gas output by the gas generator (20) to enter the airbag (10).

2. The airbag device according to claim 1, characterized in that, The air bag (10) is located on the occupant side of the seat frame (50), and the gas generator (20) is installed on the occupant side of the seat frame (50); or, The air bag (10) is located on the side of the seat frame (50) away from the occupant, and the gas generator (20) is installed on the side of the seat frame (50) closer to the occupant.

3. The airbag device according to claim 1, characterized in that, The airbag device further includes: an air duct (40) passing through the communicating space (30); and, The first end (43) of the air guide tube (40) is connected to the air outlet of the gas generator (20), and the second end (44) is connected to the air bag (10).

4. The airbag device according to claim 3, characterized in that, The air guide tube (40) is straight, and the air outlet of the gas generator (20) is aligned with the communicating space (30); Alternatively, the air duct (40) may include: a straight portion (41) passing through the communicating space (30) and a vertical portion (42) connecting the straight portion (41); the extending direction of the vertical portion (42) is perpendicular to the extending direction of the straight portion (41); and the outer end of the vertical portion (42) is the first end (43), and the outer end of the straight portion (41) is the second end (44).

5. The airbag device according to claim 4, characterized in that, The air inlet of the air bag (10) covers and secures the second end (44) of the air guide tube (40); or, The portion of the air bag (10) near the air inlet passes through the communicating space (30) and covers the air guide tube (40), and is fixed to the first end (43) of the air guide tube (40); and the air bag (10) is also fixed to the second end (44) of the air guide tube (40).

6. The airbag device according to claim 5, characterized in that, The gas generator (20) is interference-fitted or threaded to the first end (43) of the gas guide pipe (40); or, The air bag (10) is fixed to the second end (44) of the air guide tube (40) by a clamp (35), or the air bag (10) is fixed to the first end (43) and the second end (44) of the air guide tube (40) by a clamp (35).

7. The airbag device according to claim 3, characterized in that, The communicating space (30) includes: a through hole (31) for the air duct (40) to pass through, and a slot (32) for the uninflated airbag (10) to pass through to install the airbag device; and, The groove (32) is connected to the through hole (31).

8. The airbag device according to claim 1, characterized in that, The uninflated airbag (10) is partially or entirely arranged in a folded or flat manner on one side of the seat frame (50); or, The seat frame (50) has at least one mounting hole (34) for the gas generator (20).

9. The airbag device according to claim 1, characterized in that, The seat frame (50) is: side panel frame, backrest frame, seat frame or headrest frame; When the seat frame (50) is a side panel frame, the air bag (10) is located on the occupant side of the side panel frame, and the gas generator (20) is installed on the occupant side of the side panel frame; or, the air bag (10) is located on the occupant side of the side panel frame, and the gas generator (20) is installed on the occupant side of the side panel frame; and, When the seat frame (50) is a backrest frame, a seat basin frame, or a headrest frame, the air bag (10) is located on the side of the backrest frame, the seat basin frame, or the headrest frame closer to the occupant, and the gas generator (20) is installed on the side of the backrest frame, the seat basin frame, or the headrest frame away from the occupant.

10. An airbag device for a car seat, comprising: An air bag (10) and a gas generator (20) for inflating the air bag (10); characterized in that, When the airbag device is installed in a vehicle seat, the airbag (10) and the gas generator (20) are distributed on both sides of the side panel frame based on the communication space (30) opened on the side panel frame of the seat. The communication space (30) is used to allow the gas output by the gas generator (20) to enter the airbag (10).

11. A safety airbag system for a car seat, characterized in that, include: A first airbag device installed in the first side panel (60) of the vehicle seat, and a second airbag device installed in the second side panel (61) of the vehicle seat; Either the first airbag device or the second airbag device includes: an airbag (10) and a gas generator (20) for inflating the airbag (10); When the first airbag device and the second airbag device are installed in the vehicle seat: the airbag (10) and gas generator (20) of the first airbag device are distributed on both sides of the frame of the first side panel (60) based on a first connecting space opened on the frame of the first side panel; the airbag (10) and gas generator (20) of the second airbag device are distributed on both sides of the frame of the second side panel based on a second connecting space opened on the frame of the second side panel; and, The airbags (10) of the first airbag device and the airbags (10) of the second airbag device are located near the occupant side for wrapping and / or clamping the occupant after deployment; the gas generators (20) of the first airbag device and the gas generators (20) of the second airbag device are installed away from the occupant side.

12. The airbag system according to claim 11, characterized in that, The airbag (10) of the first airbag device is supported by the first side plate (60) and deploys towards the occupant and the front of the vehicle; the airbag (10) of the second airbag device is supported by the second side plate (61) and deploys towards the occupant and the front of the vehicle; and, The airbags (10) of the first airbag device and the airbags (10) of the second airbag device form a triangular area that wraps around and / or clamps the occupant after deployment.

13. The airbag system according to claim 11, characterized in that, Each of the first and second airbag devices, when deployed, includes an inner cavity (62) for clamping the occupant and an outer cavity (63) for preventing the occupant from leaning forward. The inner cavity (62) is located between the outer cavity (63) and the occupant, and the outer cavity (63) is located between the inner cavity (62) and the vehicle seat; and, The minimum distance between the outer cavity (63) of the first airbag device and the outer cavity (63) of the second airbag device is less than a preset distance threshold, and the minimum distance between the inner cavity (62) of the first airbag device and the inner cavity (62) of the second airbag device is less than or equal to two-thirds of the width of the seat back.

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