Airbag, airbag device, and safety seat

Abstract

The utility model discloses a safety air bag, a safety air bag device and a safety seat. The safety air bag is provided with an inflation state and a folding device. The safety air bag comprises a bag body and an air inlet channel. The bag body is provided with a bag cavity, an air bag air inlet communicated with the bag cavity and a separation part for separating the bag cavity; a first cavity and a second cavity are formed in the two sides of the separation part respectively; the air inlet channel is communicated with the first cavity and the second cavity; the first cavity is communicated with the air inlet of the air bag, and the second cavity is communicated with the air inlet of the air bag through the first cavity, so that the first cavity and the second cavity are sequentially expanded in an inflation state. According to the technical scheme, the possibility that passengers are injured when the safety air bag is started can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to children's articles technical field, especially a kind of safety air bag, safety air bag device and safety seat. BACKGROUND

[0002] At present, more and more safety air bag devices are configured on safety seats of vehicles, so that when the vehicle is in a collision accident, the safety air bag device is inflated to protect the passengers. However, the safety air bag device in the related art is inflated and deployed instantaneously during the starting process. At this time, a large deployment impact force is easily generated, which may cause harm to the passengers. SUMMARY

[0003] The main purpose of the utility model is to provide a safety air bag, which aims to reduce the possibility of causing harm to passengers during starting.

[0004] To achieve the above-mentioned purpose, the safety air bag provided by the utility model has an inflated state and a folded state, and comprises:

[0005] a bag body having a bag cavity, an air bag inlet communicating with the bag cavity, and a partition portion separating the bag cavity; the partition portion forms a first cavity and a second cavity on both sides, respectively; and an air inlet channel communicating the first cavity and the second cavity;

[0006] The first cavity communicates with the air bag inlet, and the second cavity communicates with the air bag inlet through the first cavity, so that the first cavity and the second cavity are sequentially deployed in the inflated state.

[0007] Optionally, the first cavity and the second cavity are arranged in a first direction as a whole; in the first direction, the bag body has a corresponding air inlet end and a fixed end, the air bag inlet is located at the air inlet end, the first cavity is located at a position close to the air inlet end relative to the second cavity, and the second cavity is located at a position close to the fixed end relative to the first cavity.

[0008] Part of the partition portion is arranged to extend in the first direction to separate the first cavity and the second cavity in the inflated state, so that the first cavity and the second cavity in the inflated state can be close to each other side by side.

[0009] Optionally, the length of the partition portion arranged to extend in the first direction is not less than 0.5 cm.

[0010] Optionally, the length of the partition portion arranged to extend in the first direction is between 1-5 cm.

[0011] Optionally, in a second direction perpendicular to the first direction, the partition is located in the middle of the capsule body, and the air inlet channel is provided with two partitions symmetrically arranged on both sides of the partition.

[0012] Alternatively, the partition is provided with a plurality of partitions, and the plurality of partitions are arranged in a second direction perpendicular to the first direction.

[0013] Optionally, in the first direction, the distance between the partition and the fixed end is greater than the distance between the partition and the air inlet end.

[0014] Optionally, the partition is a suture provided on the capsule body, and the suture connects and fixes two inner walls of the capsule cavity, and the suture extends along an ellipse as a whole.

[0015] Optionally, the capsule body is provided with a fixed mounting portion on one side close to the fixed end, and a constraint suture is arranged at a position close to the fixed mounting portion, the fixed mounting portion is located between the constraint suture and the fixed end, and the constraint suture connects and fixes two inner walls of the capsule cavity to be flat in the inflated state.

[0016] The utility model also proposes a kind of safety air bag device, comprising:

[0017] Air bag box has accommodating cavity and the accommodating cavity opening of the accommodating cavity exposed outward;

[0018] The safety air bag bag as described above;And

[0019] Inflating unit, with the air bag air inlet is communicated to inflate the safety air bag bag;

[0020] In the folded state, part of the safety air bag bag is accommodated in the accommodating cavity;

[0021] In the inflated state, the safety air bag bag at least partially accommodated in the accommodating cavity is inflated and extended outward from the accommodating cavity opening.

[0022] Optionally, the capsule body has corresponding air inlet end and fixed end, the air bag air inlet is located at the air inlet end, the first cavity is located at the position close to the air inlet end relative to the second cavity, and the second cavity is located at the position close to the fixed end relative to the first cavity;The fixed end is fixed outside the air bag box, and the air inlet end is located in the accommodating cavity;In the folded state, the capsule body surrounding the first cavity is located in the accommodating cavity as a whole, and the capsule body surrounding the second cavity is at least partially located outside the accommodating cavity.

[0023] Optionally, the airbag box has a front side wall and a rear side wall arranged oppositely, and in the folded state, the airbag body exposed outside the accommodating cavity is located at the side of the rear side wall;

[0024] In the inflated state, the inflated first cavity is located above the airbag box as a whole, the inflated second cavity is located at the side of the rear side wall as a whole, and part of the second cavity extends upward to be arranged in parallel with the second cavity.

[0025] Optionally, in the inflated state, the partition is located above the airbag box as a whole and at the side of the rear side wall;

[0026] The partition, the airbag body partially surrounding the first cavity, and the airbag body partially surrounding the second cavity form an accommodating surface for accommodating the head of a child.

[0027] Optionally, the airbag box has a box body and a support body arranged below the box body, the accommodating cavity is arranged in the box body, and the inflation unit comprises a gas cylinder arranged in the support body.

[0028] The utility model also provides a safety seat, which comprises:

[0029] A seat body, and

[0030] The safety airbag device as described above, the airbag box of the safety airbag device is connected to the seat body and located at the front side of the seat body or at least one of the left and right sides of the seat body.

[0031] The safety airbag bag of the technical scheme of the utility model separates the cavity into a first cavity and a second cavity through a partition, the first cavity is communicated with the air inlet of the safety airbag bag, the second cavity is communicated with the first cavity through an air inlet channel, and the second cavity is further communicated with the air inlet through the first cavity, so that the first cavity and the second cavity can be unfolded in sequence when the safety airbag bag is inflated. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structures shown in these drawings without creative labor.

[0033] Figure 1 Structure diagram of an embodiment of the safety seat of the utility model;

[0034] Figure 2 For Figure 1 The schematic diagram of the safety seat in the airbag bag in the inflated state;

[0035] Figure 3 For Figure 2 The perspective view of the safety airbag device;

[0036] Figure 4 For Figure 3 The cross-sectional view of the safety airbag device;

[0037] Figure 5 The exploded structure diagram of the airbag bag and the inflating unit of the safety airbag device of the utility model;

[0038] Figure 6 The assembly diagram of the airbag bag, the inflating unit and the airbag box of the safety airbag device of the utility model;

[0039] Figure 7 For Figure 6 The folding line distribution diagram of the airbag bag in the safety airbag device;

[0040] Figure 8 For Figure 7 The schematic diagram of the airbag bag in the safety airbag device after folding;

[0041] Figure 9 For Figure 8 The schematic diagram of the fixed end of the airbag bag in the safety airbag device fixed to the airbag box;

[0042] Figure 10 For Figure 9 The folding schematic diagram of the airbag bag in the safety airbag device;

[0043] Figure 11 For Figure 10 The rolling schematic diagram of the airbag bag in the safety airbag device;

[0044] Figure 12 For Figure 11 The other rolling schematic diagram of the airbag bag in the safety airbag device.

[0045] Explanation of the drawing reference:

[0046] 100, safety seat; 30, seat body; 10, airbag device; 11, airbag case; 111, accommodating cavity; 112, accommodating cavity opening; 113, front side wall; 114, rear side wall; 115, case body; 116, support body; 13, inflator unit; 131, gas cylinder; 131a, gas cylinder gas outlet; 15, airbag bag; 150, bag body; 1501, bag cavity; 1503, gas inlet passage; 151, gas inlet end; 151a, airbag gas inlet; 152, fixed end; 152a, fixed mounting portion; 153, partition portion; 1531, suture line; 154, first cavity; 155, second cavity; 15a, restraint suture line; 15b, primary folding line; 15c, secondary folding line; 156, first winding portion; 157, second winding portion; 159, receiving surface; 17, wrapping sleeve; 18, first clamping member; 19, second clamping member.

[0047] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0049] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0050] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0051] In addition, the descriptions involving "first", "second", etc. in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions, for example, "A and / or B" includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope claimed by the present application.

[0052] Please refer to Figure 1 and Figure 2 , the present application proposes a kind of air bag device 10, which can be applied to safety seat 100.

[0053] In an embodiment of the present application, the safety seat 100 can include a seat body 30 and an air bag device 10. Wherein, the seat body 30 can be installed in a vehicle or the like vehicle to be occupied by the occupant. And the air bag device 10 can be arranged on the seat body 30 to be activated to protect the occupant when the vehicle or the like vehicle is in a collision accident.

[0054] Further, when the installation seat 100 is in a normal use arrangement state, the seat body 30 can be defined to have a front-back direction. Wherein, the side of the seat body 30 towards the occupant is the front side. At this time, the air bag device 10 can be arranged on the front side of the seat body 30. Of course, in some embodiments, the air bag device 10 can also be arranged on at least one of the left side and the right side of the seat body 30. It can be seen that the present application does not limit the installation mode of the air bag device 10 on the seat body 30.

[0055] Please refer to Figure 3 , Figure 4 and Figure 9 In an embodiment of the present application, the air bag device 10 can include an air bag box 11, an inflator unit 13 and an air bag bag 15; the air bag box 11 has a containing cavity 111 and a containing cavity opening 112 exposed to the outside of the containing cavity 111; the air bag bag 15 has a folded state, in the folded state, part of the air bag bag 15 is accommodated in the containing cavity 111; the inflator unit 13 communicates with the air bag bag 15 to inflate the air bag bag 15.

[0056] The airbag box 11 can be used to form a receiving cavity 111 to accommodate the inflator unit 13 and the airbag cushion 15, so that the airbag device 10 can be assembled as a whole. Meanwhile, the airbag box 11 can also be used to connect with the seat body 30 as described above, so as to realize the installation of the airbag device 10 on the seat body 30. In order to facilitate the assembly and inflation of the airbag cushion 15, the receiving cavity opening 112 of the airbag box 11 can be arranged at the upper end of the airbag box 11 and upwardly arranged, and the lower end of the airbag box 11 can be fixedly connected to the seat body 30, or can be rotatably connected to the seat body 30 around a rotation axis parallel to the left-right direction. In other embodiments, the inflator unit 13 can also be not installed in the receiving cavity 111, but arranged outside the airbag box 11 or on the seat body 30.

[0057] The inflator unit 13 can be used to inflate the airbag cushion 15, so that the airbag cushion 15 can also have an inflated state. In order to simplify the structure of the inflator unit 13 and improve the convenience of arrangement, the inflator unit 13 can include a gas cylinder 131, which can be used to store high-pressure gas, and the gas cylinder outlet 131a of the gas cylinder 131 has an open state and a closed state. When the vehicle or other vehicle does not occur in a collision accident, the gas cylinder outlet 131a can be closed to enclose the high-pressure gas in the gas cylinder 131; when the vehicle or other vehicle occurs in a collision accident, the gas cylinder outlet 131a can be opened, so that the high-pressure gas can be sprayed from the gas cylinder outlet 131a to inflate the airbag cushion 15. In order to facilitate the assembly and improve the compactness of the structure, the gas cylinder 131 can be arranged in the up-down direction, and the gas cylinder outlet 131a can be arranged at the upper end of the gas cylinder 131.

[0058] The airbag cushion 15 in the inflated state can be inflated and extended outwardly from the receiving cavity opening 112, so as to realize the protection of the occupant.

[0059] Please refer to Figures 3 to 6 In an embodiment of the present application, the airbag cushion 15 includes a bag body 150 and an air inlet passage 1503, the bag body 150 has a bag cavity 1501, an airbag air inlet 151a communicating with the bag cavity 1501, and a partition 153 separating the bag cavity 1501; the partition 153 forms a first cavity 154 and a second cavity 155 on both sides thereof; the air inlet passage 1503 communicates the first cavity 154 and the second cavity 155; the first cavity 154 communicates with the airbag air inlet 151a, and the second cavity 155 communicates with the airbag air inlet 151a through the first cavity 154, so that the first cavity 154 and the second cavity 155 are unfolded in sequence in the inflated state.

[0060] The partition 153 can divide the capsule cavity 1501 into the first cavity 154 and the second cavity 155 arranged in sequence along the flow direction of the inflation airflow, so that the inflating unit 13 can first inflate the first cavity 154 and then inflate the second cavity 155 when inflating the safety airbag bag 15, thereby realizing the sequential inflation of the first cavity 154 and the second cavity 155. The partition 153 can be formed by the suture 1531 arranged on the capsule 150 as described below, and can also be formed by an adhesive layer arranged in the capsule 150. The structure of the partition 153 is not limited in the present application, as long as the capsule cavity 1501 can be divided.

[0061] The safety airbag bag 15 of the technical scheme of the utility model divides the capsule cavity 1501 into the first cavity 154 and the second cavity 155 through the partition 153, the first cavity 154 is communicated with the airbag inlet 151a of the safety airbag bag 15, the second cavity 155 is communicated with the first cavity 154 through the inlet channel 1503, and is further communicated with the airbag inlet 151a through the first cavity 154, so that the first cavity 154 and the second cavity 155 can be unfolded in sequence when the safety airbag bag 15 is inflated. That is, the first cavity 154 is filled first, and then the second cavity 155 is filled. At this time, the overall instantaneous inflation of the safety airbag bag 15 can be avoided, and a large impact force on the occupant is avoided, thereby reducing the possibility of injury to the occupant when the safety airbag bag 15 is started.

[0062] Please refer to Figures 4 to 6 In an embodiment of the present application, the first cavity 154 and the second cavity 155 are arranged in the first direction as a whole; in the first direction, the capsule 150 has a corresponding inlet end 151 and a fixed end 152, the airbag inlet 151a is located at the inlet end 151, the first cavity 154 is located at a position close to the inlet end 151 relative to the second cavity 155, and the second cavity 155 is located at a position close to the fixed end 152 relative to the first cavity 154; part of the partition 153 is arranged in the first direction to separate the first cavity 154 and the second cavity 155 in the inflation state, so that the first cavity 154 and the second cavity 155 in the inflation state can be arranged side by side.

[0063] The airbag bag 15 in the unfolded state can have a length direction and a width direction. The length direction can be a first direction, and the width direction can be a second direction. The gas inlet end 151 and the fixed end 152 can be two ends of the airbag bag 15 in the length direction. The gas inlet end 151 can be sleeved on one end of the gas cylinder 131 of the inflator 13 having a gas cylinder gas outlet 131a, and is clamped and fixed by the first clamping member 18 and the gas cylinder 131 to realize quick and stable connection between the gas inlet end 151 and the gas cylinder 131. The fixed end 152 can be connected to the airbag box 11 through the fixed mounting portion 152a as described below. In addition, in the direction from the middle part to the two ends of the airbag bag 15, the width dimensions of the gas inlet end 151 and the fixed end 152 can be tapered to facilitate the positioning and installation of the gas inlet end 151 and the fixed end 152. Of course, the width dimensions of the gas inlet end 151 and the fixed end 152 and the width dimension of the middle part of the airbag bag 15 can also be equal.

[0064] In the present embodiment, the first cavity 154 is arranged close to the gas inlet end 151 relative to the second cavity 155, and the second cavity 155 is arranged close to the fixed end 152 relative to the first cavity 154, so that the inflator 13 can improve the sequential inflation effect of the first cavity 154 and the second cavity 155 when inflating the airbag bag 15. Further, the partial partition portion 153 is arranged to extend along the first direction, so that the first cavity 154 and the second cavity 155 in the inflated state can be arranged side by side. At this time, when the cavity accommodating opening 112 of the airbag box 11 is arranged upward, the part of the bag body 150 surrounding the first cavity 154 can be inflated and unfolded upward, and the part surrounding the second cavity 155 can be inflated and unfolded downward, so that the possibility of forming an unfolding impact toward the head of the occupant can be reduced. Therefore, the airbag bag 15 in the inflated and unfolded state can better protect the occupant.

[0065] In an embodiment of the present application, the length of the partition portion 153 arranged to extend along the first direction is not less than 0.5 cm.

[0066] In the present embodiment, the extension dimension of the partition portion 153 in the first direction is arranged to be not less than 0.5 cm, which can improve the side-by-side effect of the first cavity 154 and the second cavity 155 in the inflated state.

[0067] Further, in order to balance the size of the capsule cavity 1501 and the effect of the first cavity 154 and the second cavity 155 being close to each other in the inflated state, the length of the separation portion 153 in the first direction is between 1-5cm, for example, 1cm, 1.5cm, 2cm, 2.5cm, 3cm, 3.5cm, 4cm, 4.5cm or 5cm, of course, any value in the above interval is also possible.

[0068] For reference Figure 4 and Figure 5 In an embodiment of the present application, in the second direction perpendicular to the first direction, the separation portion 153 is located in the middle of the capsule 150, and the air inlet channel 1503 is provided on both sides of the separation portion 153.

[0069] In the embodiment, the separation portion 153 is arranged in the middle of the capsule 150, which facilitates the separation of the capsule cavity 1501 into the first cavity 154 and the second cavity 155 that meet the size requirements. Further, the air inlet channel 1503 is arranged on both sides of the separation portion 153, which is beneficial to improve the uniformity of inflation on both sides of the capsule 150 in the width direction, so that the capsule 150 can be uniformly inflated and expanded to provide more effective protection for the occupant.

[0070] Of course, the present application is not limited to this, in an embodiment of the present application, the separation portion 153 can be provided with multiple separation portions 153, and the multiple separation portions 153 are arranged in the second direction perpendicular to the first direction, and the air inlet channel 1503 can also be formed between the adjacent two separation portions 153.

[0071] For reference Figure 5 In an embodiment of the present application, in the first direction, the distance between the separation portion 153 and the fixed end 152 is greater than the distance between the separation portion 153 and the air inlet end 151.

[0072] In the embodiment, the distance between the separation portion 153 and the fixed end 152 is greater than the distance between the separation portion 153 and the air inlet end 151, so that the volume of the second cavity 155 can be greater than the volume of the first cavity 154. At this time, when the first cavity 154 is rapidly filled and expanded, the volume of the first cavity 154 is relatively small and will not be too close to the occupant, especially the head of the occupant, thereby reducing the possibility of impact damage to the occupant.

[0073] For reference Figure 5 In an embodiment of the present application, the separation portion 153 is a suture 1531 arranged in the capsule 150, and the suture 1531 connects and fixes the two inner walls of the capsule cavity 1501, and the suture 1531 is arranged in an overall elliptical shape.

[0074] In the embodiment, the partition 153 is formed in the form of a suture 1531, so that the partition 153 can be formed by a simple sewing process after the completion of the manufacture of the capsule 150, thereby facilitating the processing of the partition 153. Further, the suture 1531 is arranged in an overall elliptical shape, which facilitates the formation of the first cavity 154 and the second cavity 155 on both sides of the partition 153 in the first direction and the formation of the air inlet channel 1503 on both sides of the partition 153 in the third direction.

[0075] For reference Figure 4 and Figure 5 In an embodiment of the present application, the capsule 150 is provided with a fixed mounting portion 152a on one side close to the fixed end 152, and a constraint suture 15a is arranged at a position close to the fixed mounting portion 152a. The fixed mounting portion 152a is located between the constraint suture 15a and the fixed end 152, and the constraint suture 15a connects and fixes the two inner walls of the capsule cavity 1501 to constrain the position of the constraint suture 15a to be flat in the inflated state.

[0076] In the embodiment, the fixed mounting portion 152a can be used to connect and fix the airbag box 11, so that the first cavity 154 and the second cavity 155 form the parallel closing effect as described above after the airbag 15 is inflated. Further, the arrangement of the constraint suture 15a allows the bottom of the second cavity 155 to be constrained, reducing the transition and expansion of the part of the capsule 150 that encloses the second cavity 155 downward to cause excessive compression to the occupant. The constraint suture 15a can be arranged in an open circular shape, and the opening can be arranged towards the fixed end 152, so that the capsule 150 can form a flat shape in this part. Of course, the constraint suture 15a can also be arranged in a circular or other shape. In addition, the fixed mounting portion 152a can be in the form of a mounting hole that is not communicated with the capsule cavity 1501 on the inner side of the airbag 15. At this time, please refer to Figures 5 to 9 , the fixed end 152 can be sleeved on the outside of the airbag box 11 through the mounting hole from the lower end of the airbag box 11, and clamped and fixed by the second clamping member 19 such as a clamp in cooperation with the airbag box 11, to realize the quick and stable installation between the fixed end 152 and the airbag box 11.

[0077] For reference Figures 6 to 11 In an embodiment of the present application, the fixed end 152 is fixed outside the airbag box 11, and the air inlet end 151 is located in the containing cavity 111; in the folded state, the capsule 150 that encloses the first cavity 154 is located entirely in the containing cavity 111, and the capsule 150 that encloses the second cavity 155 is at least partially located outside the containing cavity 111.

[0078] In the embodiment, the fixed end 152 is fixed outside the airbag box 11, and can be connected through the fixed mounting portion 152a as introduced above, so that the convenience of connecting the fixed end 152 can be improved. Further, the airbag body 150 surrounding the first cavity 154 is located entirely in the accommodating cavity 111, and the airbag body 150 surrounding the second cavity 155 is located at least partially outside the accommodating cavity 111, so that the parts of the airbag body 150 surrounding the first cavity 154 and the second cavity 155 can be conveniently stretched and unfolded from the accommodating cavity opening 112 of the airbag box 11 after inflation.

[0079] For reference Figure 4 , and Figures 9 to 12 In an embodiment of the present application, the airbag box 11 has a front side wall 113 and a rear side wall 114 arranged oppositely, and in the folded state, the airbag body 150 exposed outside the accommodating cavity 111 is located on the side where the rear side wall 114 is located; in the inflated state, the inflated first cavity 154 is located entirely above the airbag box 11, the inflated second cavity 155 is located entirely on the side where the rear side wall 114 is located, and part of the second cavity 155 extends upward to be arranged in parallel with the second cavity 155.

[0080] The front side wall 113 is the side wall of the airbag box 11 away from the occupant sitting on the seat body 30. The rear side wall 114 is the side wall of the airbag box 11 close to the occupant sitting on the seat body 30.

[0081] In the embodiment, the airbag body 150 exposed outside the accommodating cavity 111 in the folded state is arranged on the side where the rear side wall 114 is located, so that the inflated and unfolded second cavity 155 can be directed towards the side where the occupant sitting on the seat body 30, so as to protect the occupant. Further, in the inflated state, the inflated first cavity 154 is located entirely above the airbag box 11, the inflated second cavity 155 is located entirely on the side where the rear side wall 114 is located, and part of the second cavity 155 extends upward to be arranged in parallel with the second cavity 155, so that the first cavity 154 can be inflated and unfolded upward, and the second cavity 155 can be inflated and unfolded downward, thereby facilitating to reduce the impact damage of the airbag to the head of the occupant after inflation and unfolding as introduced above.

[0082] For reference Figure 4 In an embodiment of the present application, in the inflated state, the partition portion 153 is located entirely above the airbag box 11 and on the side where the rear side wall 114 is located; the partition portion 153, the airbag body 150 surrounding part of the first cavity 154, and the airbag body 150 surrounding part of the second cavity 155 form a receiving surface 159 for receiving the head of the child.

[0083] In the embodiment, in the inflated state, the partition 153 is located above the air bag box 11 as a whole and on the side where the rear side wall 114 is located, facilitating the formation of the first cavity 154 and the second cavity 155 in the front-rear direction to be in the side-by-side and close-together form as introduced above. Moreover, at this time, an outward convex arc-shaped receiving surface 159 can be formed by the partition 153, the bag body 150 that partially surrounds the first cavity 154, and the bag body 150 that partially surrounds the second cavity 155, so as to effectively receive and protect the child's head by the receiving surface 159.

[0084] For reference Figure 4 In an embodiment of the present application, the air bag box 11 has a box body 115 and a support body 116 arranged below the box body 115, the accommodating cavity 111 is arranged in the box body 115, and the gas cylinder 131 in the inflation unit 13 is arranged in the support body 116.

[0085] In the embodiment, the air bag box 11 is arranged to include the box body 115 and the support body 116, so that the accommodating cavity 111 structure is conveniently formed by the box body 115, and the support body 116 can conveniently provide the mounting portion 152a with the installation of the sleeve as introduced above from bottom to top. At the same time, the support body 116 can also provide the gas cylinder 131 in the inflation unit 13 with a mounting position, so as to stably install the gas cylinder 131 on the air bag box 11 in a compact manner.

[0086] For reference Figures 5 to 12In an embodiment of the present application, the folding and accommodating manner of the airbag bag 15 can be as follows: the left portion of the airbag bag 15 is folded for the first time along the first folding line 15b towards the right side, and then is folded for the second time along the second folding line 15c towards the left side. At this time, the first folding line 15b intersects the second folding line 15c away from the center line of the airbag bag 15. Similarly, the right portion of the airbag bag 15 can be folded in the same manner. That is, the right portion of the airbag bag 15 is folded for the first time along the first folding line 15b towards the left side, and then is folded for the second time along the second folding line 15c towards the right side. In this way, the preliminary folding of the airbag bag 15 in the left-right direction is completed. Then, the fixed end 152 of the airbag bag 15 can be sleeved from the lower end of the airbag box 11 upwards through the fixed mounting portion 152a in the form of a mounting hole, and is clamped and fixed by the second clamping member 19 such as a clamp. Then, the airbag bag 15 can be folded in the front-rear direction to form a first winding portion 156 and a second winding portion 157; the winding length of the first winding portion 156 is greater than that of the second winding portion 157. At this time, the first winding portion 156 can be folded and wound towards the rear to complete the first winding. Then, the second winding portion 157 can be folded towards the front and attached to the upper side of the first winding portion 156, and the first winding portion 156 is driven to fold and wind towards the front, so that the first winding portion 156 and the second winding portion 157 are accommodated in the accommodating cavity 111 and located above the gas cylinder 131, and the second winding is completed. Finally, the wrapping sleeve 17 can be sleeved on the outside of the airbag box 11, and the accommodating cavity opening 112 is covered. At this time, by using the above-mentioned folding and accommodating manner, the volume of the airbag bag 15 after folding can be small, and the airbag bag 15 can be conveniently accommodated. The inflation sequence of the first cavity 154 and the second cavity 155 in the airbag bag 15 can be better controlled, and the required shape of the airbag bag 15 after inflation and unfolding can be formed.

[0087] The above description is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields based on the inventive concept of the present application and the content of the specification and drawings are included in the patent protection scope of the present application.

Claims

1. An airbag bag, having an inflatable state and a folded state, characterized in that, include: The sac body has a sac cavity, an air inlet communicating with the sac cavity, and a partition separating the sac cavity; The partition portion forms a first cavity and a second cavity on both sides, respectively; And an air intake channel, connecting the first cavity and the second cavity; The first cavity is connected to the air inlet of the airbag, and the second cavity is connected to the air inlet of the airbag through the first cavity, so that the first cavity and the second cavity unfold sequentially when inflated.

2. The airbag bag as described in claim 1, characterized in that, The first cavity and the second cavity are arranged along a first direction; in the first direction, the bladder has a corresponding air inlet end and a fixed end, the air inlet of the air bladder is located at the air inlet end, the first cavity is located near the air inlet end relative to the second cavity, and the second cavity is located near the fixed end relative to the first cavity. The partition extends along a first direction to separate the first cavity and the second cavity in the inflated state, so that the first cavity and the second cavity in the inflated state can be placed side by side.

3. The airbag bag as described in claim 2, characterized in that, The length of the partition extending along the first direction is not less than 0.5 cm.

4. The airbag bag as described in claim 3, characterized in that, The length of the partition extending along the first direction is between 1 and 5 cm.

5. The airbag bag as described in claim 2, characterized in that, In a second direction perpendicular to the first direction, the partition is located in the middle of the bladder, and two air intake channels are provided and symmetrically arranged on both sides of the partition; Alternatively, multiple partitions may be provided, and the multiple partitions may be arranged as a whole along a second direction perpendicular to the first direction, with the air intake channel formed between two adjacent partitions.

6. The airbag bag as described in claim 2, characterized in that, In the first direction, the distance between the partition and the fixed end is greater than the distance between the partition and the air intake end.

7. The airbag as described in any one of claims 1 to 6, characterized in that, The dividing part is a suture line provided on the cyst body. The suture line connects and fixes the two inner walls of the cyst cavity. The suture line extends in an elliptical shape as a whole.

8. The airbag bag as described in claim 2, characterized in that, A fixing and mounting part is provided on the side of the bladder near the fixed end. A restraining suture is provided on the bladder near the fixing and mounting part. The fixing and mounting part is located between the restraining suture and the fixed end. The restraining suture connects and fixes the two inner walls of the bladder cavity so that the position of the restraining suture is flat in the inflated state.

9. An airbag device, characterized in that, include: An airbag box having a receiving cavity and a receiving cavity opening that exposes the receiving cavity to the outside; The airbag as described in any one of claims 1 to 8; as well as An inflation unit is connected to the airbag inlet to inflate the safety airbag. In the folded state, a portion of the airbag is housed within the receiving cavity; In the inflated state, the airbag, which is at least partially contained within the receiving cavity, expands outward from the opening of the receiving cavity.

10. The airbag device as described in claim 9, characterized in that, The bladder has a corresponding air inlet and a fixed end. The air inlet is located at the air inlet. The first cavity is located near the air inlet relative to the second cavity, and the second cavity is located near the fixed end relative to the first cavity. The fixed end is fixed outside the air bladder box, and the air inlet is located inside the receiving cavity. In the folded state, the entire bladder forming the first cavity is located inside the receiving cavity, and at least a portion of the bladder forming the second cavity is located outside the receiving cavity.

11. The airbag device as claimed in claim 10, characterized in that, The airbag box has a front sidewall and a rear sidewall that are arranged opposite to each other. In the folded state, the airbag body exposed outside the receiving cavity is located on the side where the rear sidewall is located. In the inflated state, the expanded first cavity is located above the airbag box, and the expanded second cavity is located on the side where the rear sidewall is located, with a portion of the second cavity extending upwards to be arranged side by side with the second cavity.

12. The airbag device as claimed in claim 11, characterized in that, In the inflated state, the partition is located entirely above the airbag box and on the side where the rear sidewall is located; The partition, the sac that partially forms the first cavity, and the sac that partially forms the second cavity form a receiving surface for receiving the child's head.

13. The airbag device as described in claim 10, characterized in that, The airbag box has a box body and a support body disposed below the box body, the receiving cavity is disposed in the box body, and the inflation unit includes an air cylinder disposed in the support body.

14. A child safety seat, characterized in that, include: The seat body, and The airbag device as described in any one of claims 9 to 13, wherein the airbag housing of the airbag device is connected to the seat body and is located on the front side of the seat body, or on at least one of the left and right sides of the seat body.

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