Child car safety seat and airbag package

Abstract

The child car safety seat comprises a seat body (1) and an airbag package (2) provided in the seat body (1), the airbag package (2) comprising an airbag shell (21), a high-pressure gas cylinder housing (22) placed in the airbag shell (21), a high-pressure gas cylinder (23) placed in the high-pressure gas cylinder housing (22), and an airbag (24), the high-pressure gas cylinder (23) having an exhaust port (230) having a closed state and an open state, The airbag (24) has a cavity (240) and an inlet (241) communicating with the outlet (230) of the high-pressure gas cylinder (23), and the airbag (24) has a folded state and an inflated state, and when folded, the airbag (24) is at least partially folded and placed inside the airbag shell (21), and when inflated, the outlet (230) of the high-pressure gas cylinder (23) is open, allowing gas to enter the cavity (240) and cause the airbag (24) to break through the airbag shell (21). At the same time, an airbag package is disclosed that has a simple structure, occupies a small space when folded, and firmly supports and protects a child's head when inflated, providing high safety.

Description

[Technical Field]

[0001] The present invention relates to the technical field of children's products, and more particularly to child car safety seats and airbag packages. [Background technology]

[0002] A child car safety seat is a specially designed seat for children that is installed inside the car and can effectively improve the safety of children inside the car. Currently, child car safety seats have become a necessity for children traveling in cars, ensuring their safety while driving and ensuring their comfort while riding. When in use, the seat body is fixed to the car seat, and the child sits in the seat body and is restrained by the seat belt. However, in the event of a car collision, the inertial force caused by the strong impact can cause the child's upper body to fly forward, hitting the front seat and potentially causing injury.

[0003] To improve safety, some child car safety seats are equipped with airbag devices, which are usually installed on both sides of the seat body. When the car is running normally, the airbag device is in a deflated state and stored inside the seat body. When the car crashes, the airbag device inflates and projects out of the seat body to protect the child's body. However, such airbag devices still provide insufficient protection for the child's head, and the inflated airbag device cannot firmly support and protect the child's head. In addition, conventional airbag devices usually have a complex structure, and the installation structure between the airbag device and the seat body is also complex, making the process cumbersome. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION An object of the present invention is to provide a child car safety seat with high safety in order to solve the problems existing in the prior art. [Means for solving the problem]

[0005] In order to achieve the above objectives, the technical solutions adopted in the present invention include: A child car safety seat having a seat body to which an airbag package for protecting a child's safety in the event of a car collision is connected, The airbag package includes: an airbag shell having an airbag chamber; a high-pressure gas cylinder having an exhaust port and storing high-pressure gas, the exhaust port of the high-pressure gas cylinder having a closed state and an open state, the high-pressure gas being trapped inside the high-pressure gas cylinder when the exhaust port of the high-pressure gas cylinder is in the closed state, and the high-pressure gas being ejected from the exhaust port of the high-pressure gas cylinder when the exhaust port of the high-pressure gas cylinder is in the open state; a high-pressure gas cylinder housing placed in the airbag shell and housing the high-pressure gas cylinder; an airbag having a cavity and an air intake port that communicate with each other, the air intake port of the airbag communicating with the exhaust port of the high-pressure gas cylinder and fixedly connected to the high-pressure gas cylinder housing and / or the exhaust port of the high-pressure gas cylinder, the airbag having a folded state and an inflated state, when the airbag is in the folded state, at least a part of the airbag is folded and placed inside the airbag shell and the exhaust port of the high-pressure gas cylinder is in a closed state, and when the airbag is inflated, the exhaust port of the high-pressure gas cylinder is in an open state, and the high-pressure gas enters the cavity from the exhaust port of the high-pressure gas cylinder through the air intake port of the airbag, thereby causing at least a part of the airbag to break through the airbag shell and enter the outside of the airbag shell.

[0006] Preferably, when the airbag is inflated, the cross section of the airbag has an inverted "C" shape, with one end of the inverted "C" shape being the airbag intake port and the other end being fixedly connected to the high-pressure gas cylinder housing. The inverted "C" shape of the airbag can firmly support the child's head, reduce the impact force, and improve safety.

[0007] More preferably, the airbag package further comprises a first string having one end connected to the other end of the airbag and the other end fixedly connected to the high-pressure gas cylinder housing, the first string ensuring that the airbag assumes an inverted "C" shape when inflated and preventing the other end of the airbag from curling upward.

[0008] More preferably, the airbag package further comprises at least one second string, one end of which is fixedly connected to a center of the airbag and the other end of which is fixedly connected to the high-pressure gas cylinder housing, the second string being located within the airbag shell when the airbag is in a folded state, and being in a taut state and at least a portion of which is located outside the airbag shell when the airbag is in an inflated state. The provision of the second string can ensure that the entire airbag has excellent tensile support when the airbag is in an inflated state.

[0009] In one specific embodiment, two second strings are provided, and the two second strings are provided to cross each other or to be parallel to each other.

[0010] More preferably, the cavity includes a first cavity, one end of which forms an air intake port of the airbag, and a second cavity, one end of which is fixed to the high-pressure gas cylinder housing, and the other end of the first cavity and the other end of the second cavity are connected via an airflow channel.

[0011] Even more preferably, the airbag package further comprises at least one second string, one end of which is fixedly connected to the airbag on the outer wall of the airflow channel and the other end of which is fixedly connected to the high-pressure gas cylinder housing, the second string being located within the airbag shell when the airbag is in a folded state, and being in a taut state and at least a portion of which is located outside the airbag shell when the airbag is in an inflated state.

[0012] Preferably, the seat body is provided with a seat belt component, which includes shoulder belts and a central buckle provided on both the left and right sides, the lower part of the central buckle being directly or indirectly connected to the seat body, one end of each of the shoulder belts on both sides being connected to the seat body, the other end of each of the shoulder belts on both sides being detachably connected to the central buckle, and the lower part of the high-pressure gas cylinder housing being provided behind the central buckle.

[0013] More preferably, the high-pressure gas cylinder housing has engagement portions on both the left and right sides of the upper part thereof, which engage with the shoulder belts on the corresponding sides, and when the seat belt component is in a tensioned state, the shoulder belts on both sides are pressed against the engagement portions on the corresponding sides, thereby forming a three-point restraint structure for the high-pressure gas cylinder housing. In the event of a car collision, the high-pressure gas cylinder housing moves forward, and after inflating the airbag, it can increase the distance from the child and firmly support and protect the child's head.

[0014] More preferably, the engagement portion is a guide groove recessed inward from the front surface of the high-pressure gas cylinder container, the guide groove extending obliquely in the vertical direction, and both ends of the guide groove in the longitudinal direction each penetrating into a corresponding end of the high-pressure gas cylinder container.

[0015] In a specific embodiment, the seat belt component further includes a crotch belt having one end connected to the seat body and the other end connected to the central buckle, i.e., the central buckle is attached to the seat body by a soft connection.

[0016] Preferably, the lower end of the high-pressure gas cylinder container is connected to the crotch belt.

[0017] In another specific embodiment, the lower part of the central buckle is rotatably connected to the seat body via a rotating shaft, and the rotating shaft extends in the left-right direction, i.e., the central buckle is hard-connected to the seat body.

[0018] When the airbag is in a folded state, at least a portion of the high-pressure gas cylinder housing, at least a portion of the airbag, and at least a portion of the high-pressure gas cylinder are located within the airbag chamber of the airbag shell, so that the overall volume of the airbag package is small and it occupies a small space.

[0019] Preferably, when the vehicle is running normally, the exhaust port of the high-pressure gas cylinder is in a closed state, and when the vehicle is crashed, the exhaust port of the high-pressure gas cylinder is automatically triggered to be in an open state.

[0020] Another object of the present invention is to provide an airbag package that is simple in structure, safe and reliable in order to solve the problems existing in the prior art.

[0021] In order to achieve the above objectives, the technical solutions adopted in the present invention include: 1. An airbag package comprising: an airbag shell having an airbag chamber; a high-pressure gas cylinder having an exhaust port and storing high-pressure gas, the exhaust port of the high-pressure gas cylinder having a closed state and an open state, the high-pressure gas being trapped inside the high-pressure gas cylinder when the exhaust port of the high-pressure gas cylinder is in the closed state, and the high-pressure gas being ejected from the exhaust port of the high-pressure gas cylinder when the exhaust port of the high-pressure gas cylinder is in the open state; a high-pressure gas cylinder housing placed in the airbag shell and housing the high-pressure gas cylinder; an airbag having a cavity and an air intake port that communicate with each other, the air intake port of the airbag communicating with the exhaust port of the high-pressure gas cylinder and fixedly connected to the high-pressure gas cylinder housing and / or the exhaust port of the high-pressure gas cylinder, the airbag having a folded state and an inflated state, when the airbag is in the folded state, at least a part of the airbag is folded and placed inside the airbag shell and the exhaust port of the high-pressure gas cylinder is in a closed state, and when the airbag is inflated, the exhaust port of the high-pressure gas cylinder is in an open state, and the high-pressure gas enters the cavity from the exhaust port of the high-pressure gas cylinder through the air intake port of the airbag, thereby causing at least a part of the airbag to break through the airbag shell and enter the outside of the airbag shell.

[0022] Preferably, when the airbag is inflated, the cross section of the airbag has an inverted "C" shape, with one end of the inverted "C" shape being the airbag intake port and the other end being fixedly connected to the high-pressure gas cylinder housing. The inverted "C" shape of the airbag can firmly support the child's head, reduce the impact force, and improve safety.

[0023] More preferably, the airbag package further comprises a first string having one end connected to the other end of the airbag and the other end fixedly connected to the high-pressure gas cylinder housing, the first string ensuring that the airbag assumes an inverted "C" shape when inflated and preventing the other end of the airbag from curling upward.

[0024] More preferably, the airbag package further comprises at least one second string, one end of which is fixedly connected to a center of the airbag and the other end of which is fixedly connected to the high-pressure gas cylinder housing, the second string being located within the airbag shell when the airbag is in a folded state, and being in a taut state and at least a portion of which is located outside the airbag shell when the airbag is in an inflated state. The provision of the second string can ensure that the entire airbag has excellent tensile support when the airbag is in an inflated state.

[0025] In one specific embodiment, two second strings are provided, and the two second strings are provided to cross each other or to be parallel to each other.

[0026] More preferably, the cavity includes a first cavity, one end of which forms an air intake port of the airbag, and a second cavity, one end of which is fixed to the high-pressure gas cylinder housing, and the other end of the first cavity and the other end of the second cavity are connected via an airflow channel.

[0027] Even more preferably, the airbag package further comprises at least one second string, one end of which is fixedly connected to the airbag on the outer wall of the airflow channel and the other end of which is fixedly connected to the high-pressure gas cylinder housing, the second string being located within the airbag shell when the airbag is in a folded state, and being in a taut state and at least a portion of which is located outside the airbag shell when the airbag is in an inflated state. The provision of the second string can ensure that the entire airbag has excellent tensile support when the airbag is in an inflated state.

[0028] When the airbag is in a folded state, at least a portion of the high-pressure gas cylinder housing, at least a portion of the airbag, and at least a portion of the high-pressure gas cylinder are located within the airbag chamber of the airbag shell, so that the overall volume of the airbag package is small and it occupies a small space. [Effects of the Invention]

[0029] By applying the above technical solutions, the present invention has the following advantages over the prior art:

[0030] In the present invention, by providing an airbag package in a child car safety seat, the structure of the airbag package is simple and stable, and when folded, the overall structure is compact and occupies a small space, and when inflated, the airbag firmly supports and protects the child's head, preventing or reducing injuries to the child's head and further improving safety. The installation structure between the airbag package and the seat body is simple, reducing the difficulty of installation. [Brief explanation of the drawings]

[0031] [Figure 1] 1 is a schematic front view of a child car safety seat when the airbag of the first embodiment is in a folded state. FIG. [Figure 2]FIG. 2 is a schematic cross-sectional view taken along line AA in FIG. [Figure 3] 1 is a schematic plan view of a child car safety seat when the airbag of the first embodiment is in a folded state. FIG. [Figure 4] FIG. 1 is a schematic front view of the child car safety seat of the first embodiment when the airbag is inflated (the two second cords are arranged to cross each other). [Figure 5] FIG. 2 is a schematic front view 2 of the child car safety seat of the first embodiment when the airbag is inflated (the two second cords are arranged in parallel); [Figure 6] FIG. 5 is a schematic cross-sectional view of BB in FIG. [Figure 7] 1 is a schematic cross-sectional view of the airbag of the first embodiment in a folded state. [Figure 8] 1 is a schematic cross-sectional view of the airbag of the first embodiment being converted from a folded state to an inflated state. FIG. [Figure 9] 1 is a schematic cross-sectional view of the airbag of the first embodiment in an inflated state. FIG. [Figure 10] 1 is a schematic front view of the airbag of the first embodiment in an inflated state. FIG. [Figure 11] FIG. 10 is a schematic cross-sectional view of the airbag of the second embodiment in an inflated state. DETAILED DESCRIPTION OF THE INVENTION

[0032] The technical solutions of the present invention will be described below clearly and completely with reference to the drawings, and of course, the described embodiments are not all embodiments but only some embodiments of the present invention. Based on the embodiments of the present invention, any other embodiments that can be obtained by those skilled in the art without any creative work fall within the protection scope of the present invention.

[0033] In describing the present invention, the directions such as "front," "rear," "left," "right," "up," and "down" mentioned are all defined with reference to the seat body facing the direction of travel of the vehicle. That is, as shown in FIG. 2, the right side in the drawing is "front," the left side in the drawing is "rear," the upper side in the drawing is "up," the lower side in the drawing is "down," and the directions perpendicular to the viewing angle in the drawing are "left" and "right." The definitions of the above directions are merely intended to facilitate and simplify the description of the present invention, and do not indicate or suggest that the designated devices or elements must be constructed or operated in a particular orientation, and therefore should not be understood to limit the present invention.

[0034] Example 1 The child car safety seat, as shown in Figures 1 and 3 to 5, comprises a seat body 1 attached to a car seat for a child to sit in, and an airbag package 2 provided on the seat body 1 to protect the child's body in the event of a car collision.

[0035] The seat main body 1 is provided with a seat belt component 10, which, as shown in FIGS. 1, 4, and 5, specifically includes a shoulder belt, a crotch belt 103, and a central buckle 104. The shoulder belts are provided on both the left and right sides, namely, a left shoulder belt 101 and a right shoulder belt 102. The upper ends of the left shoulder belt 101 and the right shoulder belt 102 are fixedly connected to the upper left and right sides of the seat main body 1, respectively. The lower end of the crotch belt 103 is connected to the seat main body 1, and the lower end of the crotch belt 103 is positioned between the child's legs. The central buckle 104 is connected to the upper end of the crotch belt 103, and the lower ends of the left shoulder belt 101 and the right shoulder belt 102 are both detachably connected to the central buckle 104.

[0036] The seat belt component 10 has a tensioned state and a slack state. When a child sits in the seat body 1, the left shoulder belt 101 and the right shoulder belt 102 are connected to the crotch belt 103 by the center buckle 104, and the seat belt component 10 is in a tensioned state, effectively restraining the child and ensuring the safety of the child.

[0037] The airbag package 2 is installed in the seat belt component 10. Specifically, as shown in Figures 7 to 9, the airbag package 2 is installed behind the central buckle 104, and the lower part of the airbag package 2 is connected to the crotch belt 103. Installing the airbag package 2 in the seat belt component 10 can improve the convenience of installation and use.

[0038] The airbag package 2 will be specifically described in detail below.

[0039] As shown in Figures 7 to 10, the airbag package 2 comprises an airbag shell 21, a high-pressure gas cylinder housing 22, a high-pressure gas cylinder 23, and an airbag 24. The airbag shell 21 has an airbag chamber 210 inside, the high-pressure gas cylinder housing 22 is provided within the airbag chamber 210, the high-pressure gas cylinder 23 is housed within the high-pressure gas cylinder housing 22, the airbag 24 is in communication with the high-pressure gas cylinder 23, and at least a portion of the airbag 24 is located within the airbag chamber 210.

[0040] 7, the high-pressure gas cylinder housing 22 is provided behind the central buckle 104, and the lower part of the high-pressure gas cylinder housing 22 is detachably connected to the crotch belt 103. In this embodiment, the lower part of the high-pressure gas cylinder housing 22 and the crotch belt 103 are connected by a thread, which simplifies the structure and makes installation easy.

[0041] High-pressure gas is stored in the high-pressure gas cylinder 23. As shown in Figure 7, the high-pressure gas cylinder 23 has an outlet port 230 that can be opened and closed, and the outlet port 230 is located at the top of the high-pressure gas cylinder 23. The outlet port 230 of the high-pressure gas cylinder 23 has a closed state and an open state, and when the outlet port 230 of the high-pressure gas cylinder 23 is in the closed state, the high-pressure gas is confined inside the high-pressure gas cylinder 23, and when the outlet port 230 of the high-pressure gas cylinder 23 is in the open state, the high-pressure gas can be sprayed from the outlet port 230 of the high-pressure gas cylinder 23.

[0042] The airbag 24 is the main component that plays a protective role in the airbag package 2, and has a cavity 240 inside the airbag 24. The airbag 24 is provided with an air intake 241, and the cavity 240 and the air intake 241 are connected to each other. The air intake 241 of the airbag 24 is connected to the exhaust port 230 of the high-pressure gas cylinder 23, and the air intake 241 of the airbag 24 is fixedly connected to the high-pressure gas cylinder housing 22 and / or the exhaust port 230 of the high-pressure gas cylinder 23. Specifically, as shown in Figures 8 and 9, the cavity 240 has a first cavity 2401 and a second cavity 2402, and has an opening at one end of the first cavity 2401, i.e., an air intake port for the airbag 24 is formed at one end of the first cavity 2401, one end of the second cavity 2402 is fixed to the high-pressure gas cylinder housing 22, and the other end of the first cavity 2401 and the other end of the second cavity 2402 are connected via a narrow airflow channel 2403. In this embodiment, the intake port 241 of the airbag 24 is fixedly connected to the high-pressure gas cylinder housing 22, i.e., the opening at one end of the first cavity 2401 is fixedly connected to the high-pressure gas cylinder housing 22, and the opening at one end of the first cavity 2401 covers the exhaust port 230 of the high-pressure gas cylinder 23 inside, thereby connecting the intake port 241 of the airbag 24 and the exhaust port 230 of the high-pressure gas cylinder 23 to each other.

[0043] The airbag 24 has a folded state and an inflated state. As shown in Figures 7 to 10, when the airbag 24 is in the folded state, at least a portion of the airbag 24 is folded and placed inside the airbag shell 21, and at this time, the exhaust port 230 of the high-pressure gas cylinder 23 is closed. When the airbag 24 is in the inflated state, the exhaust port 230 of the high-pressure gas cylinder 23 is open, and the high-pressure gas stored in the high-pressure gas cylinder 23 flows from the exhaust port 230 of the high-pressure gas cylinder 23 through the inlet port 241 of the airbag 24 into the first cavity 2401 and then through the airflow channel 2403 into the second cavity 2402, causing the airbag 24 to inflate as a whole, and at least a portion of the airbag 24 to break through the airbag shell 21 and protrude outside the airbag shell 21.

[0044] Specifically, when the airbag 24 is in a folded state, at least a portion of the airbag 24 is located within the airbag chamber 210, so the overall volume of the airbag package 2 is small and the space it occupies is small. In this embodiment, as shown in Fig. 7, when the airbag 24 is in a folded state, the entire airbag 24 is folded and placed within the high-pressure gas cylinder housing 22, and is located above the high-pressure gas cylinder 23.

[0045] When the airbag 24 is inflated, as shown in FIG. 9, the cross section of the airbag 24 in the vertical direction has an inverted "C" shape, one end of the inverted "C" shape of the airbag 24 is the air intake port 241 of the airbag 24, the other end of the inverted "C" shape of the airbag 24 is fixedly connected to the high-pressure gas cylinder housing 22, and the opening of the inverted "C" shape of the airbag 24 faces the seat body 1. When a car crashes and a child's head is thrust forward, the middle part of the inverted "C" shape of the airbag 24 firmly supports the child's head, reducing the impact force and improving safety.

[0046] In order to ensure that the airbag 24 forms an inverted "C" shape when inflated and that the inverted "C" structure is stable, the airbag package 2 further includes a first string 25 and a second string 26, which are used to fixedly connect the airbag 24 to the high-pressure gas cylinder housing 22, as shown in FIG. 9 .

[0047] Specifically, one end of the first string 25 is fixedly connected to the other end of the airbag 24, and the other end is fixedly connected to the high-pressure gas cylinder housing 22, and the fixed connection point between the other end of the first string 25 and the high-pressure gas cylinder housing 22 is located on the outer wall of the high-pressure gas cylinder housing 22 and faces the seat body 1. The provision of the first string 25 ensures that the airbag 24 assumes an inverted "C" shape when inflated, and prevents the other end of the airbag 24 from curling upward after inflation.

[0048] One end of the second string 26 is fixedly connected to the center of the airbag 24 and the other end is fixedly connected to the high-pressure gas cylinder housing 22. In this embodiment, one end of the second string 26 is fixedly connected to the airbag 24 on the outer wall of the airflow channel 2403, and the connection point between the other end of the second string 26 and the high-pressure gas cylinder housing 22 is located on the inner wall of the high-pressure gas cylinder housing 22. At least one second string 26 is provided. In this embodiment, as shown in FIG. 4, two second strings 26 are provided. One end of each of the two second strings 26 is fixedly connected to the center of the airbag 24 and the other end of each of the two second strings 26 is fixedly connected to the high-pressure gas cylinder housing 22. The two second strings 26 cross each other, which more uniformly distributes the force applied to the airbag 24 when inflated and reduces the amount of lateral movement during a collision. Of course, as shown in FIG. 5, two second strings 26 may be provided parallel to each other. When the airbag 24 is in a folded state, the second string 26 is located inside the airbag shell 21 and is in a loose state, and when the airbag 24 is in an inflated state, the second string 26 is in a taut state and the upper part of the second string 24 is located outside the airbag shell 21. By providing the second string 26, it is ensured that the entire airbag 24 has excellent tensile support when the airbag 24 is in an inflated state, thereby improving safety.

[0049] 10, the high-pressure gas cylinder housing 22 is provided with engaging portions 220 on both the left and right sides of the upper part thereof, and the engaging portions 220 can be engaged with the corresponding shoulder belts. When the seat belt component 10 is in a tensioned state, the left shoulder belt 101 and the right shoulder belt 102 are pressed against the corresponding engaging portions 220, respectively. At the same time, the lower part of the high-pressure gas cylinder housing 22 is located behind the central buckle 104. Therefore, the left shoulder belt 101, the right shoulder belt 102, and the central buckle 104 form a three-point restraint structure for the high-pressure gas cylinder housing 22, i.e., the airbag package 2, which constantly maintains an appropriate distance between the airbag package 2 and the child's body and can firmly support and protect the child's head after the airbag 24 is inflated.

[0050] Specifically, as shown in Figure 10, the engagement portion 220 is a guide groove recessed inward from the front surface of the high-pressure gas cylinder housing 22, and the guide groove extends obliquely in the vertical direction, with both ends of the guide groove in the longitudinal direction each penetrating into a corresponding end of the high-pressure gas cylinder housing 22.

[0051] The operation process of the airbag package 2 of this embodiment will now be described in detail.

[0052] 7, when the car is running normally, the child sits in the seat body 1, and at this time, the exhaust port 230 of the high-pressure gas cylinder 23 is closed, and the airbag 24 is folded and stored in the airbag shell 21, so that the overall volume is small and does not affect the normal use of the seat belt component 10. At this time, the seat belt component 10 is in a tensioned state, and the left shoulder belt 101 and the right shoulder belt 102 are each pressed against the engaging portion 220 on one side of the high-pressure gas cylinder housing 22.

[0053] As shown in Figure 8, when a vehicle crashes, the exhaust port 230 of the high-pressure gas cylinder 23 is automatically triggered to open, and the high-pressure gas stored in the high-pressure gas cylinder 23 enters the cavity 240 through the exhaust port 230 of the high-pressure gas cylinder 23. The airbag 24 begins to inflate and breaks through the top of the airbag shell 21, forming an inverted "C" shape with the cooperation of the first string 25 and the second string 26, as shown in Figure 9. The engagement of the left shoulder belt 101 and the right shoulder belt 102 with the high-pressure gas cylinder housing 22 prevents the high-pressure gas cylinder housing 22 from driving the airbag 24 forward, maintaining an appropriate distance between the airbag package 2 and the child's body. At this time, when the child's head tilts forward, it comes into contact with the surface of the airbag 24, acting as a cushion, thereby avoiding or reducing injury to the child's head and further improving safety.

[0054] Example 2 In this embodiment, the seat belt component 10 does not have a crotch belt 103, and the lower part of the central buckle 104 is rotatably connected to the seat main body 1 via a rotating shaft 105, which extends in the left-right direction. In this way, the central buckle 104 can rotate forward or backward relative to the seat main body 1 around the rotating shaft 105.

[0055] When a child needs to sit in the child car safety seat or when a child needs to be removed from the child car safety seat, the central buckle 104 is rotated forward relative to the seat body 1, thereby increasing the space between the central buckle 104 and the seat body 1 so that the child can sit in the child car safety seat or be removed from the child car safety seat.

[0056] After the child sits in the child car safety seat, the central buckle 104 is rotated backward relative to the seat body 1 to tension the seat belt component 10, and at the same time, an appropriate distance is maintained between the airbag package 2 and the child's body so that when the car collides and the child's head tilts forward, it comes into contact with the surface of the airbag 24 and acts as a cushion.

[0057] The above examples are merely for the purpose of illustrating the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand and practice the contents of the present invention, but are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made substantially in accordance with the idea of ​​the present invention shall be included in the scope of protection of the present invention. [Explanation of symbols]

[0058] 1. Seat body 10. Seat belt components 101, left shoulder belt 102, right shoulder belt 103. Crotch belt 104, central buckle 105, rotating shaft 2. Airbag package 21. Airbag shell 210, airbag chamber 22. High-pressure gas cylinder container 220, engagement portion 23. High-pressure gas cylinder 230, exhaust port 24. Airbags 240, cavity 2401, first cavity 2402, second cavity 2403, Airflow Channel 241. Air intake 25. First string 26. Second string

Claims

1. A child car safety seat having a seat body to which an airbag package for protecting a child's safety in the event of a car collision is connected, an airbag shell having an airbag chamber; a high-pressure gas cylinder having an exhaust port and storing high-pressure gas, the exhaust port of the high-pressure gas cylinder having a closed state and an open state, the high-pressure gas being trapped inside the high-pressure gas cylinder when the exhaust port of the high-pressure gas cylinder is in the closed state, and the high-pressure gas being ejected from the exhaust port of the high-pressure gas cylinder when the exhaust port of the high-pressure gas cylinder is in the open state; a high-pressure gas cylinder housing placed in the airbag shell and housing the high-pressure gas cylinder; an airbag having a cavity and an air inlet that communicate with each other, the air inlet of the airbag communicating with an outlet of the high-pressure gas cylinder and fixedly connected to the high-pressure gas cylinder housing and / or the outlet of the high-pressure gas cylinder, the airbag having a folded state and an inflated state, when the airbag is in the folded state, at least a part of the airbag is folded and placed in the airbag shell and the outlet of the high-pressure gas cylinder is in a closed state, and when the airbag is inflated, the outlet of the high-pressure gas cylinder is in an open state, and the high-pressure gas enters the cavity from the outlet of the high-pressure gas cylinder through the air inlet of the airbag, so that at least a part of the airbag breaks through the airbag shell and enters the outside of the airbag shell. A child car safety seat characterized by the above.

2. When the airbag is inflated, the cross section of the airbag has an inverted "C" shape, one end of which is an air intake port of the airbag and the other end of which is fixedly connected to the high-pressure gas cylinder housing.

2. A child car safety seat according to claim 1.

3. The airbag package further includes a first string having one end connected to the other end of the airbag and the other end fixedly connected to the high-pressure gas cylinder housing.

3. A child car safety seat according to claim 2.

4. The airbag package further includes at least one second string, one end of which is fixedly connected to a center portion of the airbag and the other end of which is fixedly connected to the high-pressure gas cylinder housing, the second string being located within the airbag shell when the airbag is in a folded state, and being in a taut state and at least a portion of which is located outside the airbag shell when the airbag is in an inflated state.

3. A child car safety seat according to claim 2.

5. Two second strings are provided, and the two second strings are provided crossing or parallel to each other.

5. A child car safety seat according to claim 4.

6. The cavity includes a first cavity having one end forming an air intake port of the airbag and a second cavity having one end fixed to the high-pressure gas cylinder housing, and the other end of the first cavity and the other end of the second cavity communicate with each other via an airflow channel.

3. A child car safety seat according to claim 2.

7. The airbag package further includes at least one second string, one end of which is fixedly connected to the airbag on the outer wall of the airflow channel and the other end of which is fixedly connected to the high-pressure gas cylinder housing, the second string being located within the airbag shell when the airbag is in a folded state, and being in a taut state and at least a portion of which is located outside the airbag shell when the airbag is in an inflated state.

7. A child car safety seat according to claim 6.

8. The seat body is provided with a seat belt component, which includes shoulder belts and a central buckle provided on both the left and right sides, the lower part of the central buckle being directly or indirectly connected to the seat body, one end of each of the shoulder belts on both sides being connected to the seat body, the other end of each of the shoulder belts on both sides being detachably connected to the central buckle, and the lower part of the high-pressure gas cylinder container being provided behind the central buckle.

2. A child car safety seat according to claim 1.

9. The upper left and right sides of the high-pressure gas cylinder housing are provided with engagement portions that engage with the corresponding shoulder belts on the left and right sides, and when the seat belt component is in a tensioned state, the shoulder belts on both sides are pressed against the engagement portions on the corresponding sides.

9. A child car safety seat according to claim 8.

10. The engaging portion is a guide groove recessed inward from the front surface of the high-pressure gas cylinder housing, and the guide groove extends obliquely in the vertical direction, and both ends in the length direction of the guide groove each penetrate into a corresponding end of the high-pressure gas cylinder housing.

10. A child car safety seat according to claim 9.

11. The seat belt component further includes a crotch belt having one end connected to the seat body and the other end connected to the central buckle.

9. A child car safety seat according to claim 8.

12. The lower end of the high-pressure gas cylinder container is connected to the crotch belt.

12. A child car safety seat according to claim 11.

13. A lower portion of the central buckle is rotatably connected to the seat body via a rotary shaft, and the rotary shaft extends in the left-right direction.

9. A child car safety seat according to claim 8.

14. When the airbag is in a folded state, at least a portion of the high-pressure gas cylinder housing, at least a portion of the airbag, and at least a portion of the high-pressure gas cylinder are located within an airbag chamber of the airbag shell.

2. A child car safety seat according to claim 1.

15. When the car is running normally, the exhaust port of the high-pressure gas cylinder is in a closed state, and when the car is hit, the exhaust port of the high-pressure gas cylinder is automatically triggered to be in an open state.

2. A child car safety seat according to claim 1.

16. 1. An airbag package comprising: an airbag shell having an airbag chamber; a high-pressure gas cylinder having an exhaust port and storing high-pressure gas, the exhaust port of the high-pressure gas cylinder having a closed state and an open state, the high-pressure gas being trapped inside the high-pressure gas cylinder when the exhaust port of the high-pressure gas cylinder is in the closed state, and the high-pressure gas being ejected from the exhaust port of the high-pressure gas cylinder when the exhaust port of the high-pressure gas cylinder is in the open state; a high-pressure gas cylinder housing placed in the airbag shell and housing the high-pressure gas cylinder; an airbag having a cavity and an air inlet that communicate with each other, the air inlet of the airbag communicating with an outlet of the high-pressure gas cylinder and fixedly connected to the high-pressure gas cylinder housing and / or the outlet of the high-pressure gas cylinder, the airbag having a folded state and an inflated state, when the airbag is in the folded state, at least a part of the airbag is folded and placed in the airbag shell and the outlet of the high-pressure gas cylinder is in a closed state, and when the airbag is inflated, the outlet of the high-pressure gas cylinder is in an open state, and the high-pressure gas enters the cavity from the outlet of the high-pressure gas cylinder through the air inlet of the airbag, so that at least a part of the airbag breaks through the airbag shell and enters the outside of the airbag shell. An airbag package characterized by:

17. When the airbag is inflated, the cross section of the airbag has an inverted "C" shape, one end of which is an air intake port of the airbag and the other end of which is fixedly connected to the high-pressure gas cylinder housing.

17. The airbag package of claim 16.

18. The airbag package further includes a first string having one end connected to the other end of the airbag and the other end fixedly connected to the high-pressure gas cylinder housing.

18. The airbag package of claim 17.

19. The airbag package further includes at least one second string, one end of which is fixedly connected to a center portion of the airbag and the other end of which is fixedly connected to the high-pressure gas cylinder housing, the second string being located within the airbag shell when the airbag is in a folded state, and being in a taut state and at least a portion of which is located outside the airbag shell when the airbag is in an inflated state.

18. The airbag package of claim 17.

20. Two second strings are provided, and the two second strings are provided crossing or parallel to each other.

20. The airbag package of claim 19.

21. The cavity includes a first cavity having one end forming an air intake port of the airbag and a second cavity having one end fixed to the high-pressure gas cylinder housing, and the other end of the first cavity and the other end of the second cavity communicate with each other via an airflow channel.

18. A child car safety seat according to claim 17.

22. The airbag package further includes at least one second string, one end of which is fixedly connected to the airbag on the outer wall of the airflow channel and the other end of which is fixedly connected to the high-pressure gas cylinder housing, the second string being located within the airbag shell when the airbag is in a folded state, and being in a taut state and at least a portion of which is located outside the airbag shell when the airbag is in an inflated state.

22. The airbag package of claim 21.

23. When the airbag is in a folded state, at least a portion of the high-pressure gas cylinder housing, at least a portion of the airbag, and at least a portion of the high-pressure gas cylinder are located within an airbag chamber of the airbag shell.

17. The airbag package of claim 16.

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