Safety air bag assembly and child safety seat

Abstract

The utility model discloses a supplementary restraint system subassembly and child safety seat, supplementary restraint system subassembly includes gasbag and gasbag seat, said gasbag has the storage state and the expansion state, said gasbag seat includes the casing that has the accommodation cavity, the top of casing forms with the release mouth of accommodation cavity intercommunication; in the storage state, the air bag is folded in the accommodating cavity; in the expansion state, the air bag expands outwards from the release opening; the air bag seat is further provided with a supporting part which is arranged on the shell and arranged along the edge of the release opening, and the supporting part is used for supporting the air bag in the expanded state. According to the child safety seat, when the air bag is in the inflated state, the air bag can be supported through the supporting part, so that the position of the air bag is stable, the air bag can be prevented from shaking and moving downwards, and the air bag can better protect the head, the chest and other parts of a child in all directions; the protection effect of the child safety seat and the safety performance during use can be improved.

Description

Technical Field

[0001] This utility model relates to the field of children's products technology, specifically to an airbag assembly and a child safety seat. Background Technology

[0002] Child safety seats effectively protect children while traveling in vehicles and are an essential device for families with children. Some child car seats are equipped with airbag systems, which consist of an airbag in both deployed and inflated states, and an airbag housing. When the car is moving normally, the airbag is deployed and housed in the airbag housing. In the event of a collision, the airbag inflates and extends beyond the airbag housing, acting as a shield to support the child and reduce the impact load. However, in current technology, when the airbag inflates, the bottom of the airbag is either unsupported or unstable. This allows the airbag to wobble and become unstable, failing to provide comprehensive protection for the child and leaving many safety hazards during vehicle travel. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a child safety seat with good airbag protection.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An airbag assembly includes an airbag and an airbag seat. The airbag has a retracted state and an inflated state. The airbag seat includes a housing with a receiving cavity, and the top of the housing forms a release port communicating with the receiving cavity. In the retracted state, the airbag is folded into the receiving cavity. In the inflated state, the airbag expands outward from the release port.

[0006] The airbag seat also has a support portion disposed on the housing and disposed along the edge of the release port, the support portion being used to support the airbag in the inflated state.

[0007] In some embodiments, the housing includes a plurality of sidewalls surrounding the accommodating cavity, the support portion is disposed on the sidewalls, and at least the top of the support portion forms a support surface, the support surface being used to support the airbag in the inflated state;

[0008] The length of the support surface extending in the thickness direction of the sidewall is greater than the thickness of the sidewall.

[0009] In some embodiments, the sidewall has an inner wall surface that surrounds the accommodating cavity and an outer wall surface that is disposed opposite to the inner wall surface, and the supporting surface extends outward from the inner wall surface in the thickness direction of the sidewall.

[0010] In some embodiments, the support portion is disposed on the top of the sidewall, and the top surface of the support portion forms the support surface.

[0011] In some embodiments, the support portion is disposed on the outer wall surface of the sidewall and near the top of the sidewall, and the top surface of the support portion is connected to the top surface of the sidewall so that the top surface of the support portion and the top surface of the sidewall together form the support surface.

[0012] In some embodiments, the cross-sectional dimension of the support gradually increases as it moves away from the sidewall along the opening direction of the release port;

[0013] Alternatively, the sidewall may be plate-shaped as a whole, and the support may also be plate-shaped as a whole and extend in a direction perpendicular to the sidewall.

[0014] In some embodiments, the supporting surface is a plane, or the supporting surface is an upwardly convex arc surface.

[0015] In some embodiments, the sidewall includes a front sidewall, a rear sidewall, and a connecting sidewall that are disposed opposite to each other on both sides of the accommodating cavity; the supporting portion is provided on both the front sidewall and the rear sidewall.

[0016] In some embodiments, the airbag assembly further includes a protective sleeve covering the outside of the airbag seat, and the airbag seat is also provided with hooks for fixing the protective sleeve; the hooks are provided on the support portion and form a gap space between them and the side wall;

[0017] The hook includes a main body and a hook portion disposed at the lower end of the main body. The main body extends downward from the support portion, and the hook portion extends or bends from the lower end of the main body toward one side of the side wall.

[0018] In some embodiments, the airbag assembly further includes a cover; when the airbag is in a retracted state, the cover covers the release port and the support surface; when the airbag is inflated, the cover moves away from the release port and the support surface.

[0019] In some embodiments, when the airbag is inflated, the cross-sectional shape of the airbag is an inverted "C" shape, one end of the inverted "C" shape of the airbag is the air inlet of the airbag, the support surface is located on the airbag near the air inlet, and the other end of the inverted "C" shape is fixedly connected to the rear of the airbag seat.

[0020] In some embodiments, the extension length of the support surface in the sidewall thickness direction is at least twice the sidewall thickness.

[0021] In some embodiments, the housing has a front sidewall and a rear sidewall disposed opposite to each other in the front-rear direction, and the size of the accommodating cavity increases as one moves away from the front sidewall.

[0022] This utility model also provides a child safety seat, including a seat body and an airbag assembly as described in any of the above claims; the airbag assembly is disposed on the seat body, the airbag assembly includes the airbag seat, the seat body includes a seat and a backrest disposed on the seat, and the bottom of the airbag seat is rotatably mounted on the seat.

[0023] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: When the airbag of the child safety seat of this utility model is in the inflated state, the airbag can be supported by the support part, so that the position of the airbag is stable, thereby preventing the airbag from shaking and moving downward, so that the airbag can better protect the child's head and chest and other parts in all directions, which can improve the protective effect of the child safety seat and the safety performance during use. Attached Figure Description

[0024] Appendix Figure 1 This is a front view of the child safety seat in this embodiment (with the airbag in the retracted state);

[0025] Appendix Figure 2 This is a top view of the child safety seat in this embodiment (with the airbag in the retracted state);

[0026] Appendix Figure 3 This is a side view of the child safety seat in this embodiment (with the airbag in the retracted state);

[0027] Appendix Figure 4 For the appendix Figure 1 sectional view along line AA;

[0028] Appendix Figure 5 For the appendix Figure 4 Enlarged view of a portion of point A in the middle;

[0029] Appendix Figure 6 This is a front view of the child safety seat in this embodiment (with the airbag inflated);

[0030] Appendix Figure 7 This is a top view of the child safety seat in this embodiment (with the airbag inflated).

[0031] Appendix Figure 8 This is a side view of the child safety seat in this embodiment (with the airbag inflated);

[0032] Appendix Figure 9 For the appendix Figure 6sectional view along line AA;

[0033] Appendix Figure 10 This is a three-dimensional schematic diagram of the airbag assembly in this embodiment (the airbag is in a retracted state);

[0034] Appendix Figure 11 This is a front view of the airbag assembly in this embodiment (the airbag is in a retracted state);

[0035] Appendix Figure 12 For the appendix Figure 11 sectional view along line AA;

[0036] Appendix Figure 13 This is a front view of the airbag assembly in this embodiment (the airbag is inflated);

[0037] Appendix Figure 14 For the appendix Figure 13 sectional view along line AA;

[0038] Appendix Figure 15 This is one of the three-dimensional schematic diagrams of the airbag seat in this embodiment;

[0039] Appendix Figure 16 This is a second three-dimensional schematic diagram of the airbag seat in this embodiment;

[0040] Appendix Figure 17 This is a bottom view of the airbag seat in this embodiment;

[0041] Appendix Figure 18 For the appendix Figure 17 Schematic diagram of cross section along line AA.

[0042] The components are as follows: 11. Base; 12. Seat; 13. Backrest; 14. Headrest; 21. Shoulder strap; 22. Waist belt; 23. Connecting strap; 24. Buckle seat; 31. Airbag seat; 311. Shell; 3111. Connecting side wall; 3111a. Guide surface; 3112. Front side wall; 3113. Rear side wall; 3114. Release port; 312. Support component; 313. Support part; 313a. Support surface; 314. Hook; 32. Airbag; 33. Gas generating device; 34. Cover body; 4. Rotating shaft. Detailed Implementation

[0043] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0044] Example 1

[0045] like Figures 1-4 , Figures 6-9 As shown, the child safety seat of this utility model includes a seat body, a seat belt assembly, and an airbag assembly.

[0046] like Figures 1-4 , Figures 6-9 As shown, the seat body includes a base 11, a seat 12 disposed on the base 11, a backrest 13 connected to or integrally disposed with the seat 12, and a headrest 14 disposed on the backrest 13. The headrest 14 can be fixedly disposed on the backrest 13, or the headrest 14 can be slidably disposed on the backrest 13, so that the height of the headrest 14 on the backrest 13 can be adjusted as needed.

[0047] The seatbelt assembly is mounted on the seat body, as in this embodiment, such as Figure 1 As shown, the seatbelt assembly includes a shoulder strap 21, a lap belt 22, a connecting strap 23, and a central buckle. The central buckle includes a buckle seat 24 and a buckle. The buckle seat is connected to the connecting strap 23, and the buckle is connected to both the shoulder strap 21 and the lap belt 22. The buckle seat 24 and the buckle are detachably connected. The shoulder strap 21 and the lap belt 22 can be a single strap, in which case they share a single buckle. Alternatively, the shoulder strap 21 and the lap belt 22 can be two independent straps, in which case each strap has a buckle for detachable connection to the buckle seat 23.

[0048] In other embodiments, the connecting strap 23 may be omitted, allowing the buckle seat 24 to be directly connected to the seat 12 or to the airbag assembly.

[0049] The seatbelt assembly has a tensioned state and a relaxed state. When a child is seated in the seat, the buckle engages with the buckle seat 23, putting the seatbelt assembly in the tensioned state, thereby effectively restraining the child and providing safety protection, such as... Figures 1-4 , Figures 6-9 As shown.

[0050] like Figures 10-18 As shown, the airbag assembly includes an airbag seat 31, an airbag 32, a gas generating device 33, a covering 34, and a protective sleeve.

[0051] The airbag 32 has a collapsed state and an inflated state. The gas generating device 33 is used to inflate the airbag 32, and the airbag 32 has an air inlet that is connected to the gas generating device 33.

[0052] The airbag seat 31 has a receiving cavity for housing all or part of the gas generating device 33 and the airbag 32 in a stored state. The top of the airbag seat 31 is provided with a release port 3114, which communicates with the receiving cavity. After the airbag 32 is inflated, it bursts out from the release port 3114 to the outside of the receiving cavity.

[0053] When the airbag 32 is inflated, its cross-sectional shape along the vertical direction is an inverted "C". One end of the inverted "C" shape is the air inlet, and the other end is fixedly connected to the rear of the airbag seat 31. The opening of the inverted "C" shape faces the seat body. Figure 9 and Figure 14 As shown. When a car collision causes a child's head to move forward, the central part of the inverted "C"-shaped airbag 32 can provide good support for the child's head, reducing the impact force and improving safety.

[0054] When the car is in normal driving, the child is sitting in the seat body, and the seat belt assembly is in a tensile state to restrain the child. The airbag 32 is in a retracted state and is housed in the receiving cavity of the airbag seat 31, and the shoulder strap 21 is pressed against the side of the airbag seat 31 away from the backrest 13.

[0055] When a car collision occurs, the gas generating device 33 inflates the airbag 32, causing the airbag 32 to expand and burst out of the release port 3114 into the outside of the containment cavity. When the airbag 32 expands, it pushes the shoulder strap 21 to move to the left or right side of the airbag seat 31, thereby causing the part of the shoulder strap 21 that is pressed against the airbag seat 31 to detach from the airbag seat 31.

[0056] In this way, at the instant the airbag 32 begins to inflate, the cooperation between the shoulder strap 21 and the airbag seat 31 prevents the airbag seat 31 from pulling the airbag 32 forward. This ensures that the inflated airbag 32 maintains an appropriate distance from the child's body to support the child's head. Furthermore, during the inflation process, the shoulder strap 21 can slip off the airbag seat 31, preventing it from interfering with the inflation of the airbag 32. This allows the airbag 32 to inflate according to its intended shape to support and protect the child.

[0057] Specifically, the airbag seat 31 has a guide surface 3111a on the side opposite to the backrest 13. The guide surface 3111a is inclined from front to back towards the left or right side of the airbag seat 31. When the seat belt assembly is in tension and the airbag 32 is in the retracted state, the shoulder strap 21 is pressed against the guide surface 3111a. When the airbag 32 is inflated, the shoulder strap 21 moves along the guide surface 3111a towards the left or right side of the airbag seat 31 and disengages from the guide surface 3111a.

[0058] In this embodiment, two shoulder straps 21 and two waist belts 22 are provided, one on each side of the seat body. Both shoulder straps 21 are located on the left and right sides of the airbag seat 31. When the seatbelt assembly is in tension and the airbag 32 is in retracted position, the shoulder straps 21 press against the left and right sides of the airbag seat 31 on the side opposite to the backrest 13. When the airbag 32 inflates, it extends to the left and right sides of the child safety seat, with each side abutting against the corresponding shoulder strap 21, causing both shoulder straps 21 to move outwards from the airbag seat 31 and slide off.

[0059] Correspondingly, guide surfaces 3111a are respectively provided on the left and right sides of the airbag seat 31 on the side away from the backrest 13, and the distance between the guide surfaces 3111a on the left and right sides gradually increases from front to back. When the seat belt assembly is in the tensioned state and the airbag 32 is in the retracted state, the shoulder straps 21 on both sides are pressed against the guide surface 3111a on the corresponding side. When the airbag 32 is in the inflated state, the shoulder straps 21 on both sides are disengaged from the guide surface 3111a.

[0060] The accommodating cavity of the airbag seat 31 has multiple sidewalls surrounding it. Specifically, the sidewalls include a front sidewall 3112, a rear sidewall 3113, and connecting sidewalls 3111. The front sidewall 3112 is located at the front of the accommodating cavity and can be flat, curved, or formed by a combination of multiple surfaces. The rear sidewall 3113 is located at the rear of the accommodating cavity, facing the child's body. The rear sidewall 3113 is flat, allowing it to fit snugly against the child's chest for improved comfort. The front and rear ends of the connecting sidewalls 3111 on both sides are connected to the front sidewall 3112 and the rear sidewall 3113, respectively, forming the left and right sidewalls of the accommodating cavity. The front sidewall 3112 is smaller in the left-right direction than the rear sidewall 3113, causing the connecting sidewalls 3111 to be angled from front to back, with the distance between the left and right connecting sidewalls 3111 gradually increasing from front to back. The guide surface 311 is located on the side of the connecting sidewall 3111 that is away from the receiving cavity.

[0061] In this embodiment, such as Figure 6 and Figure 15 As shown, the connecting sidewall 3111 on each side is curved and arched towards the receiving cavity. The guide surface 3111a is the front surface of the connecting sidewall 3111, and is correspondingly curved. When the seat belt assembly is in tension and the airbag 32 is in the retracted state, the shoulder straps 21 on both sides are pressed against the front surface of the corresponding connecting sidewall 3111. This arrangement allows the shoulder straps 21 to be better pressed against the connecting sidewall 3111 when the airbag 32 is not inflated; while during the inflation of the airbag 32, it is easy for the shoulder straps 21 to slip off the connecting sidewall 3111.

[0062] In other embodiments, each connecting sidewall 3111 has a recessed groove extending rearward from its front surface, penetrating the upper and lower end faces of the connecting sidewall 3111. The bottom of the groove forms a guide surface 3111a. When the seatbelt assembly is in tension and the airbag 32 is in retracted state, the shoulder straps 21 on both sides are pressed into the corresponding grooves. The grooves on the connecting sidewall 3111 allow the shoulder straps 21 to be better pressed against the connecting sidewall 3111 when the airbag 32 is not inflated.

[0063] A transition section is provided between the outer end of the groove and the front surface of the connecting sidewall 3111. The transition section is an inclined surface that extends from the inside to the outside and from the back to the front. The transition section facilitates the removal of the shoulder strap 21 from the groove during the inflation of the airbag 32.

[0064] The bottom of the groove can be a flat surface. Alternatively, the bottom of the groove can be a curved surface that is concave towards the receiving cavity.

[0065] Alternatively, the front surface of each connecting sidewall 3111 can be a smooth, continuous plane, forming a guide surface 3111a. When the seatbelt assembly is in tension and the airbag 32 is in retracted position, the shoulder straps 21 on both sides are pressed against the front surface of the corresponding connecting sidewall 3111. This arrangement makes it easier for the shoulder straps 21 to slip off the connecting sidewall 3111 during the inflation of the airbag 32.

[0066] In this embodiment, the airbag seat 31 includes a housing 311 and a support member 312 disposed at the bottom of the housing 311 and supporting the housing 311. The accommodating cavity is disposed in the housing 311, and the corresponding guide surface 3111a is also disposed in the housing 311.

[0067] The airbag seat 31 also has a support part 313, which is disposed in the housing 311 and along the edge of the release port 3114. The support part 313 is used to support the airbag 32 in the inflated state, so that the position of the airbag 32 is stable, thereby preventing the airbag 32 from shaking or moving downward, so that the airbag 32 can better protect the child's head and chest, etc., and improve the protective effect and safety performance of the child safety seat.

[0068] Specifically, the support portion 313 is disposed on the side wall of the accommodating cavity of the airbag seat 31, and at least the top of the support portion 313 forms a support surface 313a. The airbag 32 in the inflated state is supported by the support surface 313a. The length of the support surface 313a extending in the side wall thickness direction is greater than the thickness of the side wall on which the support portion 313 is disposed. Preferably, the length of the support surface 313 extending in the side wall thickness direction is at least twice the thickness of the side wall. The support surface 313a is located near the air inlet of the airbag 32.

[0069] The sidewall has an inner wall surface that forms the accommodating cavity and an outer wall surface that is opposite to the inner wall surface. In the thickness direction of the sidewall, the support surface 313 extends outward from the inner wall surface.

[0070] In one specific embodiment, a portion of the sidewall at the top forms a support portion 313, and the top surface of the support portion 313 forms a support surface 313a.

[0071] In another specific embodiment, the support portion 313 is disposed on the outer wall surface of the side wall and near the top of the side wall. The top surface of the support portion 313 is connected to the top surface of the side wall, so that the top surface of the support portion 313 and the top surface of the side wall together form the support surface 313a.

[0072] In the two embodiments described above, the cross-sectional dimensions of the support portion 313 gradually increase from the edge of the release port 3114 away from the side wall, that is, the cross-section of the support portion 313 in the vertical direction forms a triangular structure.

[0073] The sidewall can be plate-shaped as a whole, and the support 313 can also be plate-shaped as a whole. The extending direction of the support 313 is perpendicular to the extending direction of the sidewall, meaning that the support 313 and the sidewall on which it is located form an inverted L-shaped structure. Figure 12 , Figure 14 and Figure 15 As shown.

[0074] The supporting surface 313a can be a plane or an upwardly convex arc surface.

[0075] In this embodiment, support portions 313 are provided on both the front sidewall 3112 and the rear sidewall 3113. With the support portions 313 on the front sidewall 3112, when the airbag 32 inflates, the support portions 313 prevent the airbag from moving forward and downward, ensuring that the inflated airbag 32 maintains a suitable distance from the child's body, thus allowing the airbag 32 to provide better all-around protection for the child's head and chest.

[0076] When the airbag 32 is in the retracted state, the cover 34 covers the release port 3114 and the support surface 313a, as shown. Figure 4 and Figure 12As shown. The cover 34 can seal the release port 3114 and protect the support surface 313a to prevent damage to the airbag 32 due to wear of the support surface 313a. When the airbag 32 inflates, it breaks through the cover 34, causing the cover 34 to separate from the release port 3114 and the support surface 313a, as shown. Figure 9 and Figure 14 As shown.

[0077] The protective cover is placed over the airbag seat 31, and is typically made of cloth to improve the comfort of the child safety seat during use. Figure 15 and Figure 18 As shown, the airbag seat 31 is also provided with a hook 314 for fixing the protective sleeve. The hook 314 is provided on the support part 313 and forms a gap space between it and the side wall. The hook 314 includes a main body and a hook part provided at the lower end of the main body. The main body extends downward from the outer end of the support surface 313a, and the hook part extends or bends from the lower end of the hook towards the receiving cavity side.

[0078] When the seatbelt assembly is in tension, the buckle seat 24 is located in front of the airbag seat 32. The engagement position of the shoulder strap 21 and the connecting strap 23, i.e., the connection position of the buckle seat 23 and the buckle, corresponds to the position of the support member 312 in the height direction of the airbag seat 31. Figures 1-9 As shown. In this way, when a car collision occurs, the buckle seat 24 can also prevent the airbag seat 31 from moving forward, which can prevent the airbag 32 from being too far away from the child after inflation and thus failing to provide good support and protection for the child.

[0079] In one embodiment, the latch seat 24 and the support member 312 are independently disposed on the seat 12.

[0080] Preferably, both can be positioned on the seat 12 with relative movement, so that when a child gets in or out of the child safety seat, both can move away from the child safety seat in the seating space, thus facilitating the child's entry and exit.

[0081] The movement of the latch seat 24 and the support member 312 relative to the seat 12 can be as follows: both are rotatably mounted on the seat 12 via a rigid pivot extending in the left-right direction. Alternatively, the support member 312 is rotatably mounted on the seat 12 via a rigid pivot extending in the left-right direction, and the latch seat 24 is connected to the seat 12 via a connecting strap 23.

[0082] The connection points of the latch seat 24 and the seat 12, and the connection points of the support member 312 and the seat 12, can overlap, such as 4 and Figure 5As shown, the support member 312 is rotatably mounted on the seat 12 via a pivot 4 extending in the left-right direction. The connecting strap 23 is sleeved on the pivot 4, and the buckle seat 24 is connected to the connecting strap 23. The connection between the buckle seat 24 and the seat 12, and the connection between the support member 312 and the seat 12, can also be located at different positions.

[0083] In another embodiment, the latch seat 24 is disposed on the seat 12, and the support member 312 is disposed on the latch seat 24.

[0084] The preferred buckle seat 24 can be relatively movable on the seat 12, which also makes it easy for children to get in and out of the child safety seat.

[0085] The latch seat 24 can be rotatably mounted on the seat 12 via a rigid pivot extending in the left-right direction, or it can be connected to the seat 12 via a connecting strap 24.

[0086] In another embodiment, the support member 312 is disposed on the seat 12, and the buckle seat 24 is disposed on the support member 312.

[0087] The preferred support 312 can be relatively movable on the seat 12, which also makes it easy for children to get in and out of the child safety seat.

[0088] The support member 312 can be rotatably mounted on the seat 12 via a rigid pivot extending in the left-right direction, or it can be connected to the seat 12 via a soft webbing.

[0089] Example 2

[0090] In this embodiment, the seat belt assembly is in a tensioned state, the airbag 32 is in a retracted state and housed in the receiving cavity of the airbag seat 31, and the shoulder straps 21 on both sides are located behind the guide surface 3111a. That is, during the use of the child safety seat, the shoulder straps 21 on both sides are always detached from the guide surface 3111a, so that the seat belt assembly does not affect the inflation of the airbag 32. The rest is the same as in Embodiment 1.

[0091] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An airbag assembly, characterized in that: The device includes an airbag and an airbag seat. The airbag has a retracted state and an inflated state. The airbag seat includes a shell with a receiving cavity, and the top of the shell forms a release port communicating with the receiving cavity. In the retracted state, the airbag is folded into the receiving cavity. In the inflated state, the airbag expands outward from the release port. The airbag seat also has a support portion disposed on the housing and disposed along the edge of the release port, the support portion being used to support the airbag in the inflated state.

2. The airbag assembly according to claim 1, characterized in that: The housing includes a plurality of sidewalls surrounding the accommodating cavity, and the support portion is disposed on the sidewalls. At least the top of the support portion forms a support surface, and the support surface is used to support the airbag in the inflated state. The length of the support surface extending in the thickness direction of the sidewall is greater than the thickness of the sidewall.

3. The airbag assembly according to claim 2, characterized in that: The sidewall has an inner wall surface that surrounds the accommodating cavity and an outer wall surface that is opposite to the inner wall surface. In the thickness direction of the sidewall, the supporting surface extends outward from the inner wall surface.

4. The airbag assembly according to claim 2, characterized in that: The support portion is disposed on the top of the side wall, and the top surface of the support portion forms the support surface.

5. The airbag assembly according to claim 2, characterized in that: The support portion is disposed on the outer wall surface of the side wall and near the top of the side wall, and the top surface of the support portion is connected to the top surface of the side wall so that the top surface of the support portion and the top surface of the side wall together form the support surface.

6. The airbag assembly according to claim 4 or 5, characterized in that: As the distance from the sidewall increases along the opening direction of the release port, the cross-sectional dimension of the support gradually increases; Alternatively, the sidewall may be plate-shaped as a whole, and the support may also be plate-shaped as a whole and extend in a direction perpendicular to the sidewall.

7. The airbag assembly according to any one of claims 2 to 5, characterized in that: The supporting surface is a plane, or the supporting surface is an upwardly convex arc surface.

8. The airbag assembly according to any one of claims 2 to 5, characterized in that: The sidewalls include a front sidewall, a rear sidewall, and a connecting sidewall that are disposed opposite to each other on both sides of the accommodating cavity; the supporting portion is provided on both the front sidewall and the rear sidewall.

9. The airbag assembly according to claim 2, characterized in that: The airbag assembly also includes a protective sleeve covering the outside of the airbag seat, and the airbag seat is also provided with hooks for fixing the protective sleeve; the hooks are provided on the support portion and form a gap space between them and the side wall; The hook includes a main body and a hook portion disposed at the lower end of the main body. The main body extends downward from the support portion, and the hook portion extends or bends from the lower end of the main body toward one side of the side wall.

10. The airbag assembly according to claim 2, characterized in that: The airbag assembly also includes a cover; when the airbag is in the retracted state, the cover covers the release port and the support surface; when the airbag is inflated, the cover moves away from the release port and the support surface.

11. The airbag assembly according to claim 2, characterized in that: When the airbag is inflated, the cross-sectional shape of the airbag is an inverted "C" shape. One end of the inverted "C" shape of the airbag is the air inlet of the airbag. The support surface is located on the airbag near the air inlet. The other end of the inverted "C" shape of the airbag is fixedly connected to the rear of the airbag seat.

12. The airbag assembly according to claim 2, characterized in that: The length of the support surface extending in the sidewall thickness direction is at least twice the thickness of the sidewall.

13. The airbag assembly according to claim 1, characterized in that: In the front-rear direction, the housing has a front sidewall and a rear sidewall that are arranged opposite to each other, and the size of the accommodating cavity increases as one moves away from the front sidewall.

14. A child safety seat, characterized in that: The device includes a seat body and an airbag assembly as described in any one of claims 1 to 13; the airbag assembly is disposed on the seat body, the airbag assembly includes the airbag seat, the seat body includes a seat and a backrest disposed on the seat, and the bottom of the airbag seat is rotatably mounted on the seat.

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