Safety air bag assembly and child safety seat

Abstract

The invention discloses a safety air bag assembly and a child safety seat, the safety air bag assembly comprises an air bag and an air bag seat, the air bag has a storage state and an expansion state, the air bag seat comprises a shell with a containing cavity, and a release opening communicated with the containing cavity is formed in the top of the shell; 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] The present invention relates to the technical field of children's products, and in particular to an airbag assembly and a child safety seat. Background Art

[0002] Child safety seats can effectively protect the safety of children in a car while driving, and are necessary devices when traveling with children. Some child car safety seats are equipped with airbag devices, which include airbags with a stowed state and an inflated state and an airbag seat for placing the airbag. When the car is driving normally, the airbag is in the stowed state and accommodated in the airbag seat. When the car collides, the airbag will inflate and rush out of the airbag seat, and block the front of the child's body to support the child and reduce the impact load on the child. In the prior art, after the airbag is inflated, the bottom of the airbag has no support or the support is unstable, so the airbag is easy to shake and the position is unstable, so it cannot provide all-round protection for the child, and there are still many safety hazards during the driving of the vehicle. Summary of the invention

[0003] The purpose of the present invention is to provide a child safety seat with good airbag protection effect in view of the deficiencies in the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A safety airbag assembly comprises an airbag and an airbag seat, wherein the airbag has a storage state and an expansion state, the airbag seat comprises a shell having a receiving cavity, and a release port communicating with the receiving cavity is formed on the top of the shell; in the storage state, the airbag is folded in the receiving cavity; in the expansion state, the airbag expands outward from the release port;

[0006] The airbag seat further comprises a supporting portion which is arranged on the housing and along the edge of the release port, and the supporting portion is used for supporting the airbag in an expanded state.

[0007] In some embodiments, the shell includes a plurality of side walls surrounding the accommodating cavity, the support portion is disposed on the side walls, and at least the top of the support portion forms a support surface, and the support surface is used to support the airbag in an expanded state;

[0008] The supporting surface is extended in the thickness direction of the side wall by a length greater than the thickness of the side wall.

[0009] In some embodiments, the side wall has an inner wall surface surrounding the accommodating cavity and an outer wall surface arranged opposite to the inner wall surface, and in the thickness direction of the side wall, the support surface is formed by extending outward from the inner wall surface.

[0010] In some embodiments, the support portion is disposed on the top of the side wall, 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 side wall and close to 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.

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

[0013] Alternatively, the side wall is in a plate shape as a whole, and the support portion is also in a plate shape as a whole and extends in a direction perpendicular to the side wall.

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

[0015] In some embodiments, the side wall includes a front side wall, a rear side wall, and a connecting side wall connecting the front side wall and the rear side wall, which are relatively arranged on both sides of the accommodating cavity; the supporting part is arranged on the front side wall and the rear side wall.

[0016] In some embodiments, the airbag assembly further includes a protective cover covering the outside of the airbag seat, and the airbag seat is further provided with a hook for fixing the protective cover; the hook is provided on the support portion, and a gap space is formed between the hook and the side wall;

[0017] The hook includes a main body and a hook portion arranged 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 to one side of the side wall.

[0018] In some embodiments, the airbag assembly further comprises a covering body; when the airbag is in a stowed state, the covering body covers the release port position and covers the support surface; when the airbag is inflated, the covering body moves away from the release port and the support surface.

[0019] In some embodiments, when the airbag is in an inflated state, 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 at a position of the airbag close to 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, an extension length of the support surface in a direction of the thickness of the side wall is at least twice the thickness of the side wall.

[0021] In some embodiments, in the front-to-back direction, the shell has a front side wall and a rear side wall that are arranged opposite to each other, and the size of the accommodating cavity increases as it moves away from the front side wall.

[0022] The present invention also provides a child safety seat, comprising a seat body and an airbag assembly as described in any one of the above items; the airbag assembly is arranged on the seat body, the airbag assembly includes the airbag seat, the seat body includes a seat and a backrest arranged 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, the present invention has the following advantages compared with the prior art: when the airbag of the child safety seat of the present invention is in an 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 provide all-round protection for the child's head, chest and other parts, thereby improving the protection effect of the child safety seat and the safety performance during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Attached Figure 1 is a front view schematic diagram of the child safety seat of this embodiment (the airbag is in the stowed state);

[0025] Attached Figure 2 is a schematic top view of the child safety seat of this embodiment (the airbag is in the stowed state);

[0026] Attached Figure 3 is a side view schematic diagram of the child safety seat of this embodiment (the airbag is in the stowed state);

[0027] Attached Figure 4 For attachment Figure 1 A schematic cross-sectional view along line AA;

[0028] Attached Figure 5 For attachment Figure 4 A partial enlarged schematic diagram in the middle;

[0029] Attached Figure 6 is a front view schematic diagram of the child safety seat of this embodiment (the airbag is in an expanded state);

[0030] Attached Figure 7 is a schematic top view of the child safety seat of this embodiment (the airbag is in an expanded state);

[0031] Attached Figure 8 is a schematic side view of the child safety seat of this embodiment (the airbag is in an expanded state);

[0032] Attached Fig. 9 For attachment Figure 6 A schematic cross-sectional view along line AA;

[0033] Attached Fig.10 is a three-dimensional schematic diagram of the airbag assembly of this embodiment (the airbag is in the stowed state);

[0034] Attached Fig.11 is a front view schematic diagram of the airbag assembly of this embodiment (the airbag is in the stowed state);

[0035] Attached Fig.12 For attachment Fig.11 A schematic cross-sectional view along line AA;

[0036] Attached Fig.13 is a front view schematic diagram of the airbag assembly of this embodiment (the airbag is in an expanded state);

[0037] Attached Fig.14 For attachment Fig.13 A schematic cross-sectional view along line AA;

[0038] Attached Fig.15 is one of the three-dimensional schematic diagrams of the airbag seat of this embodiment;

[0039] Attached Fig.16 The second is a three-dimensional schematic diagram of the airbag seat of this embodiment;

[0040] Attached Fig.17 is a bottom view schematic diagram of the airbag seat of this embodiment;

[0041] Attached Fig.18 For attachment Fig.17 Schematic cross-sectional view along line AA.

[0042] Among them: 11, base; 12, seat; 13, backrest; 14, headrest; 21, shoulder strap; 22, waist belt; 23, connecting belt; 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 member; 313, support part; 313a, support surface; 314, hook; 32, airbag; 33, gas generating device; 34, covering body; 4, rotating shaft. DETAILED DESCRIPTION

[0043] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0044] Example 1

[0045] like Figure 1 to Figure 4 , Figure 6 to Figure 9 As shown, the child safety seat of the present invention comprises a seat body, a safety belt assembly and a safety airbag assembly.

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

[0047] The safety belt assembly is arranged on the seat body. In this embodiment, Figure 1 As shown, the safety belt assembly includes a shoulder strap 21, a waist belt 22, a connecting belt 23 and a central buckle. The central buckle includes a buckle seat 24 and a buckle, the buckle seat is connected to the connecting belt 23, the buckle is connected to the shoulder strap 21 and the waist belt 22, and the buckle seat 24 and the buckle are detachably connected. The shoulder strap 21 and the waist belt 22 can be one belt, in which case the two share a buckle. The shoulder strap 21 and the waist belt 22 can also be two independent belts, in which case the shoulder strap 21 and the waist belt 22 are each provided with a buckle to be detachably connected to the buckle seat 23.

[0048] In other embodiments, the connecting belt 23 may not be provided, so that the buckle seat 24 is directly connected to the seat 12 or to the airbag assembly.

[0049] The safety belt assembly has a tensioned state and a loosened state. When a child sits on the seat body, the buckle is connected to the buckle seat 23, so that the safety belt assembly is in a tensioned state, thereby effectively restraining the child to provide safety protection for the child. Figure 1 to Figure 4 , Figure 6 to Figure 9 shown.

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

[0051] The airbag 32 has a stowed state and an expanded state. The gas generator 33 is used to inflate the airbag 32 . The airbag 32 has an air inlet, which is connected to the gas generator 33 .

[0052] The airbag seat 31 has a receiving cavity, which is used to place all or part of the gas generating device 33 and the airbag 32 in the storage state. The top of the airbag seat 31 is provided with a release port 3114, which is connected to the receiving cavity. After the airbag 32 is inflated, it rushes out of the receiving cavity from the release port 3114.

[0053] When the airbag 32 is in an expanded state, the cross-sectional shape of the airbag 32 along the vertical direction is an inverted "C" shape, one end of the inverted "C" shape of the airbag 32 is an air inlet of the airbag 32, and the other end of the inverted "C" shape of the airbag 32 is fixedly connected to the rear of the airbag seat 31, and the opening of the inverted "C" shape of the airbag 32 faces the seat body, such as Fig. 9 and Fig.14 When a car collides and causes the child's head to rush forward, the middle part of the reverse "C"-shaped airbag 32 can provide good support for the child's head, thereby reducing the impact force and improving safety.

[0054] When the car is driving normally, the child sits on the seat body, and the safety belt assembly is in a tensioned state to restrain the child. The airbag 32 is in a storage state and is accommodated in the accommodating cavity of the airbag seat 31, and the shoulder belt 21 is pressed on the side of the airbag seat 31 away from the backrest 13.

[0055] When the car collides, the gas generating device 33 inflates the airbag 32, causing the airbag 32 to expand and rush out of the accommodating cavity from the release port 3114. When the airbag 32 expands, it pushes the shoulder belt 21 to move to the left or right side of the airbag seat 31, so that the part of the shoulder belt 21 pressed on the airbag seat 31 is separated from the airbag seat 31.

[0056] In this way, when the airbag 32 starts to inflate, the cooperation between the shoulder strap 21 and the airbag seat 31 can prevent the airbag seat 31 from driving the airbag 32 forward, and the inflated airbag 32 can maintain a proper distance from the child's body to support the child's head. During the inflation of the airbag 32, the shoulder strap 21 can slip off the airbag seat 31, so that the shoulder strap 21 will not affect the inflation of the airbag 32, so that the airbag 32 can expand in a set shape after inflation to support and protect the child.

[0057] Specifically, a guide surface 3111a is provided on the side of the airbag seat 31 away from the backrest 13, and the guide surface 3111a is tilted from the front to the back toward the left side or the right side of the airbag seat 31. When the seat belt assembly is in a tensioned state and the airbag 32 is in a stored state, the shoulder belt 21 is pressed against the guide surface 3111a. When the airbag 32 is in an expanded state, the shoulder belt 21 moves along the guide surface 3111a toward the left side or the right side of the airbag seat 31 and is separated from the guide surface 3111a.

[0058] In this embodiment, two shoulder belts 21 and waist belts 22 are provided, and the shoulder belts 21 and waist belts 22 are respectively provided on the left and right sides of the seat body in a one-to-one correspondence, and the two shoulder belts 21 are simultaneously located on the left and right sides of the airbag seat 31. When the safety belt assembly is in a tensioned state and the airbag 32 is in a stored state, the shoulder belts 21 on both sides are respectively pressed against the left and right side parts of the airbag seat 31 on the side away from the backrest 13. When the airbag 32 expands, the airbag 32 extends to the left and right sides of the child safety seat, and the left and right sides of the airbag 32 respectively press against the shoulder belts 21 on the corresponding side, so that the shoulder belts 21 on both sides move to the outside of the airbag seat 31, thereby sliding off the airbag seat 31.

[0059] Correspondingly, the guide surfaces 3111a are respectively arranged on the left and right sides of the airbag seat 31 away from the backrest 13, and the distance between the left and right guide surfaces 3111a increases gradually from front to back. When the seat belt assembly is in a tensioned state and the airbag 32 is in a stowed state, the shoulder belts 21 on both sides are respectively pressed on the guide surfaces 3111a on the corresponding side. When the airbag 32 is in an expanded state, the shoulder belts 21 on both sides are separated from the guide surfaces 3111a.

[0060] The accommodating cavity of the airbag seat 31 has a plurality of side walls arranged around it, and the side walls specifically include a front side wall 3112, a rear side wall 3113 and a connecting side wall 3111. The front side wall 3112 is located in front of the accommodating cavity. The front side wall 3112 can be a plane, a curved surface, or a combination of multiple surfaces. The rear side wall 3113 is located at the rear of the accommodating cavity, that is, facing the side of the child's body. The rear side wall 3113 is a plane, so that it can be placed in front of the child's chest to improve comfort. The front and rear ends of the connecting side walls 3111 on the left and right sides are respectively connected to the front side wall 3112 and the rear side wall 3113, that is, the connecting side walls 3111 on the left and right sides respectively form the left and right walls of the accommodating cavity. The size of the front side wall 3112 in the left and right directions is smaller than the size of the rear side wall 3113 in the left and right directions, so that the connecting side walls 3111 on the left and right sides are arranged tilted from front to back, and the distance between the connecting side walls 3111 on the left and right sides gradually increases from front to back. The guiding surface 311 is disposed on a side of the connecting side wall 3111 facing away from the accommodating cavity.

[0061] In this embodiment, if Figure 6 and Fig.15 As shown, the connecting side wall 3111 on each side is bent as a whole and arched toward the accommodating cavity, and the guide surface 3111a is the front surface of the connecting side wall 3111, which is correspondingly in the form of a curved surface. When the safety belt assembly is in a tensioned state and the airbag 32 is in a stored state, the shoulder straps 21 on both sides are pressed on the front surface of the connecting side wall 3111 on the corresponding side. This arrangement allows the shoulder straps 21 to be better pressed on the connecting side wall 3111 when the airbag 32 is not inflated; and during the inflation of the airbag 32, it is easy for the shoulder straps 21 to slip off the connecting side wall 3111.

[0062] In other embodiments, a groove is provided on each side of the connecting side wall 3111, which is concave backward from the front surface of the connecting side wall 3111. The groove passes through the upper and lower end surfaces of the connecting side wall 3111, and the bottom of the groove forms a guide surface 3111a. When the safety belt assembly is in a tensioned state and the airbag 32 is in a stored state, the shoulder straps 21 on both sides are pressed into the grooves on the corresponding side. The groove is provided on the connecting side wall 3111, so that the shoulder straps 21 can be better pressed on the connecting side wall 3111 when the airbag 32 is not inflated.

[0063] A transition section is provided between one end of the groove near the outside and the front surface connected to the side wall 3111. The transition section is a slope extending obliquely from the inside to the outside and from the back to the front. The provision of the transition section facilitates the shoulder strap 21 to be disengaged from the groove during the inflation of the airbag 32.

[0064] The groove bottom of the groove may be a plane, or the groove bottom of the groove may be a curved surface concave toward the accommodating cavity.

[0065] Alternatively, the front surface of the connecting side wall 3111 on each side is a smooth and continuous plane, and the front surface of the connecting side wall 3111 forms a guide surface 3111a. When the safety belt assembly is in a tensioned state and the airbag 32 is in a stored state, the shoulder straps 21 on both sides are pressed against the front surface of the connecting side wall 3111 on the corresponding side. This arrangement makes it easier for the shoulder straps 21 to slip off the connecting side wall 3111 during the inflation of the airbag 32.

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

[0067] The airbag seat 31 also has a support portion 313, which is arranged on the shell 311 and along the edge of the release port 3114. The support portion 313 is used to support the airbag 32 in an inflated state, so that the position of the airbag 32 is stable, thereby preventing the airbag 32 from shaking and moving downward, so that the airbag 32 can better provide all-round protection for the child's head, chest and other parts, thereby improving the protection effect of the child safety seat and the safety performance during use.

[0068] Specifically, the support portion 313 is arranged 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, which supports the airbag 32 in the inflated state through the support surface 313a. The length of the support surface 313a extending in the direction of the side wall thickness is greater than the thickness of the side wall on which the support portion 313 is set. Preferably, the extension length of the support surface 313 in the direction of the side wall thickness is at least twice the thickness of the side wall, and the support surface 313a is located at a position of the airbag 32 close to the air inlet.

[0069] The side wall has an inner wall surface surrounding the accommodating cavity and an outer wall surface arranged opposite to the inner wall surface. In the thickness direction of the side wall, the support surface 313 is formed by extending outward from the inner wall surface.

[0070] In a specific embodiment, a portion of the side wall located at the top forms a support portion 313 , and a top surface of the support portion 313 forms a support surface 313 a .

[0071] In another specific embodiment, the support portion 313 is arranged on the outer wall surface of the side wall and close to 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 a support surface 313a.

[0072] In the above two embodiments, the cross-sectional size of the support portion 313 gradually increases from the edge of the release port 3114 extending away from the side wall, that is, the cross-sectional size of the support portion 313 in the up-down direction forms a triangular structure.

[0073] The side wall may be plate-shaped as a whole, and the support portion 313 may also be plate-shaped as a whole, and the extension direction of the support portion 313 is perpendicular to the extension direction of the side wall, that is, the support portion 313 and the side wall on which it is disposed form an inverted L-shaped structure, such as Fig.12 , Fig.14 and Fig.15 shown.

[0074] The supporting surface 313a may be a flat surface or an upwardly convex curved surface.

[0075] In this embodiment, the front side wall 3112 and the rear side wall 3113 are both provided with support parts 313. After the support parts 313 are provided on the front side wall 3112, when the airbag 32 is inflated, the support parts 313 can prevent the airbag from moving forward and downward, so that the airbag 32 can maintain a suitable distance from the child's body after being inflated, so that the airbag 32 can better provide all-round protection for the child's head, chest and other parts.

[0076] When the airbag 32 is in the stored state, the covering body 34 covers the release port 3114 and the support surface 313a. Figure 4 and Fig.12The release port 3114 can be blocked by the covering body 34, and the support surface 313a can be protected to prevent the airbag 32 from being damaged by the wear of the support surface 313a. When the airbag 32 is inflated, the airbag 32 breaks through the covering body 34, so that the covering body 34 leaves the release port 3114 and the support surface 313a, as shown in FIG. Fig. 9 and Fig.14 shown.

[0077] The protective cover is arranged on the outside of the airbag seat 31, and the protective cover is generally made of cloth, so as to improve the comfort of the child safety seat when in use. Fig.15 and Fig.18 As shown, the airbag seat 31 is also provided with a hook 314 for fixing the sheath, and the hook 314 is provided on the support portion 313, and a gap space is formed between the hook 314 and the side wall. The hook 314 includes a main body and a hook portion 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 portion extends or bends from the lower end of the hook to one side of the accommodating cavity.

[0078] When the seat belt assembly is in a tensioned state, the buckle seat 24 is located in front of the airbag seat 32, and the joint position of the shoulder belt 21 and the connecting belt 23, that is, 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 to 9 In this way, when the car collides, the buckle seat 24 can also prevent the airbag seat 31 from moving forward, which can avoid the airbag 32 being far away from the child after inflation and failing to provide good support and protection for the child.

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

[0080] Preferably, both are arranged on the seat 12 so as to be relatively movable, so that when a child enters or exits the child safety seat, both can be moved in a direction away from the seating space of the child safety seat, thereby facilitating the child's entry or exit.

[0081] The buckle seat 24 and the support member 312 can move relative to the seat 12 in the following manner: both are rotatably arranged on the seat 12 via a rigid rotating shaft extending in the left-right direction. Alternatively, the support member 312 is rotatably arranged on the seat 12 via a rigid rotating shaft extending in the left-right direction, and the buckle seat 24 is connected to the seat 12 via a connecting belt 23.

[0082] The connection between the buckle seat 24 and the seat 12 and the connection between the support member 312 and the seat 12 can overlap, such as 4 and Figure 5As shown, the support member 312 is rotatably arranged on the seat 12 via the rotating shaft 4 extending in the left-right direction, the connecting belt 23 is sleeved on the rotating shaft 4, and the buckle seat 24 is connected to the connecting belt 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 arranged at different positions.

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

[0084] Preferably, the buckle seat 24 is arranged on the seat 12 so as to be relatively movable, which also facilitates children to get in and out of the child safety seat.

[0085] The buckle seat 24 can be rotatably disposed on the seat 12 via a rigid rotating shaft extending in the left-right direction, or can be connected to the seat 12 via a connecting belt 24 .

[0086] In yet 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] Preferably, the support member 312 is relatively movably disposed on the seat 12 , which also facilitates children to get in and out of the child safety seat.

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

[0089] Example 2

[0090] In this embodiment, the safety belt assembly is in a tensioned state, the airbag 32 is in a stored state and is contained in the accommodating cavity of the airbag seat 31, and the shoulder belts 21 on both sides are located behind the guide surface 3111a. That is, during the use of the child safety seat, the shoulder belts 21 on both sides are always separated from the guide surface 3111a, so that the safety belt assembly will 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 the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An airbag assembly, characterized in that: The invention comprises an airbag and an airbag seat, wherein the airbag has a storage state and an expansion state, the airbag seat comprises a shell having a receiving cavity, and a release port communicating with the receiving cavity is formed on the top of the shell; in the storage state, the airbag is folded in the receiving cavity; in the expansion state, the airbag expands outward from the release port; The airbag seat further comprises a supporting portion which is arranged on the housing and along the edge of the release port, and the supporting portion is used for supporting the airbag in an expanded state.

2. The airbag assembly according to claim 1, characterized in that: The shell includes a plurality of side walls surrounding the accommodating cavity, the support portion is arranged on the side wall, at least the top of the support portion forms a support surface, and the support surface is used to support the airbag in an expanded state; The supporting surface is extended in the thickness direction of the side wall by a length greater than the thickness of the side wall.

3. The airbag assembly according to claim 2, characterized in that: The side wall comprises an inner wall surface surrounding the accommodating cavity and an outer wall surface arranged opposite to the inner wall surface. In the thickness direction of the side wall, the support surface is formed by extending outward from the inner wall surface.

4. The airbag assembly according to claim 2, characterized in that: The support portion is arranged 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 arranged on the outer wall surface of the side wall and close to the top of the side wall, and the top surface of the support portion is connected with 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: The cross-sectional size of the support portion gradually increases as it moves away from the side wall along the opening direction of the release port; Alternatively, the side wall is in a plate shape as a whole, and the support portion is also in a plate shape as a whole and extends in a direction perpendicular to the side wall.

7. The airbag assembly according to any one of claims 1 to 5, characterized in that: The support surface is a plane, or the support surface is an upwardly convex curved surface.

8. The airbag assembly according to any one of claims 2 to 5, characterized in that: The side walls include a front side wall, a rear side wall, and a connecting side wall connecting the front side wall and the rear side wall, which are relatively arranged on both sides of the accommodating cavity; the supporting part is arranged on the front side wall and the rear side wall.

9. The airbag assembly according to claim 2, characterized in that: The safety airbag assembly further comprises a protective cover covering the outside of the airbag seat, and the airbag seat is further provided with a hook for fixing the protective cover; the hook is provided on the supporting portion and forms a gap space with the side wall; The hook includes a main body and a hook portion arranged 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 to one side of the side wall.

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

11. The airbag assembly according to claim 2, characterized in that: When the airbag is in an expanded state, 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 at a position of the airbag close to the air inlet, and the other end of the inverted "C" shape is fixedly connected to the rear of the airbag seat.

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

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

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

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