Safety air bag, safety belt assembly and vehicle

Abstract

The utility model discloses a safety air bag, a safety belt assembly and a vehicle, the safety air bag comprises an air bag box used for being connected with a safety belt connector located on the front side of a passenger; the air bag body is installed in the air bag box, the air bag body has a storage state in which the air bag body is stored in the air bag box and an unfolding state in which the air bag body is popped out of the air bag box, and the air bag body comprises a first air bag part and a second air bag part which are connected; in the unfolded state, the second air bag part is located above the first air bag part, the first air bag part is suitable for being supported on the legs of a passenger, and the second air bag part is suitable for protecting the head of the passenger. According to the safety air bag provided by the embodiment of the utility model, when a vehicle is impacted and a passenger flaps forwards, the safety air bag is quickly inflated and expanded from the air bag box to the front side of the body of the passenger, so that additional buffering and protection are provided for the head and the neck of the passenger.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a safety airbag, a safety belt assembly and a vehicle. Background Art

[0002] With the development of the automobile industry, vehicle safety performance has received more and more attention. Traditional vehicle safety measures mainly rely on passive safety equipment, such as conventional airbags and three-point seat belts, which provide protection for vehicle occupants in the event of a collision.

[0003] With the continuous upgrading of automobile technology, zero-gravity seats are now widely used. When the occupants are in a rear-lying position, if a collision occurs, traditional airbags and traditional seat belts cannot effectively protect the occupants. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an airbag, when a vehicle is hit, the occupant will fall forward under the action of the seat belt, and the airbag will quickly inflate from the airbag box toward the front side of the occupant's body to provide additional cushioning and protection for the occupant's head and neck.

[0005] The airbag according to the embodiment of the utility model includes: an airbag box, which is used to be connected to a seat belt connector located on the front side of an occupant; an airbag body, which is installed in the airbag box, and the airbag body has a storage state stored in the airbag box and a deployment state popped out from the airbag box, the airbag body includes a first airbag part and a second airbag part that are connected, and in the deployed state, the second airbag part is located above the first airbag part, the first airbag part is suitable for supporting on the legs of the occupant, and the second airbag part is suitable for protecting the head of the occupant.

[0006] According to the airbag of the embodiment of the utility model, the seat belt connector is used to connect the seat belt that protects the occupant, and the seat belt connector is located in front of the occupant, and the airbag box is also installed in front of the seat belt connector. When a collision occurs, the airbag body pops out from the airbag box, and the first airbag part and the second airbag part can protect different positions of the occupant such as the head and neck, thereby improving the safety of the occupant.

[0007] According to the airbag of the embodiment of the utility model, the interior of the first airbag part is a first cavity, the interior of the second airbag part is a second cavity, a first pull strap is connected between the front and rear inner walls of the connection between the first cavity and the second cavity, and a second pull strap is connected to the front and rear inner walls of the second cavity.

[0008] According to the airbag of the embodiment of the utility model, the first drawstring is located at the middle position of the first cavity along the lateral direction of the vehicle, and the second drawstring is located at the middle position of the second cavity along the lateral direction of the vehicle.

[0009] According to the airbag of the embodiment of the utility model, the surface of the first pull strap faces the up-down direction of the vehicle, the surface of the second pull strap faces the lateral sides of the vehicle, and the first pull strap is perpendicular to the second pull strap.

[0010] According to the airbag of the embodiment of the utility model, the width of the first airbag portion along the transverse direction of the vehicle is smaller than the width of the second airbag portion along the transverse direction of the vehicle, and the width of the first airbag portion along the longitudinal direction of the vehicle is smaller than the width of the second airbag portion along the longitudinal direction of the vehicle.

[0011] According to the safety airbag of the embodiment of the present utility model, when the airbag body is in the deployed state, the height of the second airbag portion in the vehicle height direction is greater than the height of the first airbag portion.

[0012] The utility model embodiment discloses a safety belt assembly, including a seven-point safety belt and the above-mentioned airbag, wherein the seven-point safety belt includes a first safety belt structure and a second safety belt structure; the first safety belt structure includes two shoulder safety belts, and the two shoulder safety belts are restrained on both sides of the shoulders of the occupant; the second safety belt structure includes a safety belt connector and a crotch safety belt, two waist safety belts and two front safety belts selectively plugged with the safety belt connector respectively, the safety belt connector is suitable for being installed on the front side of the abdomen of the occupant, the two waist safety belts are suitable for being restrained on both sides of the waist of the occupant, the two front safety belts are suitable for being restrained on both sides of the front of the occupant respectively, the crotch safety belt is suitable for being restrained between the legs of the occupant, and the airbag box is integrated on the front side of the safety belt connector.

[0013] The seat belt assembly according to the embodiment of the utility model combines a seven-point seat belt with an airbag. Firstly, the seven-point seat belt restrains and protects the body of the occupant to prevent the occupant from being thrown out or changing position too much when the vehicle is hit. The airbag is connected to the front side of the seat belt connector of the seven-point seat belt, and when the impact reaches a certain level, the airbag pops out from the front side of the occupant's body and deploys to cushion and protect the occupant's body.

[0014] According to the airbag of the embodiment of the utility model, the seat belt connector is constructed as a polygonal structure, which includes at least five connecting parts, and the five connecting parts are respectively used to connect one end of the waist seat belt, the front seat belt and the crotch seat belt.

[0015] According to the safety airbag of the embodiment of the utility model, the airbag box is constructed in a polygonal shape and has the same shape as the safety belt connector.

[0016] A vehicle according to an embodiment of the utility model includes the above-mentioned safety belt assembly.

[0017] The advantages of the vehicle described above over the prior art and the advantages of the seat belt assembly described above over the prior art are the same and will not be elaborated herein.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a schematic structural diagram of the airbag of an embodiment of the utility model;

[0021] Figure 2 This is a side perspective view of the airbag of the utility model embodiment Figure 1 ;

[0022] Figure 3 This is a side perspective view of the airbag of the utility model embodiment Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the structure of the connection between the safety belt and the safety belt connector of the embodiment of the utility model Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the structure of the connection between the safety belt and the safety belt connector of the embodiment of the utility model Figure 2 ;

[0025] Figure 6 It is a schematic diagram of the structure of the connection between the safety belt, the seat and the safety belt connector of the embodiment of the utility model;

[0026] Figure 7 It is a structural schematic diagram of a seat in an embodiment of the utility model;

[0027] Figure 8 This is a partial structural diagram of a seat in an embodiment of the utility model. Figure 1 ;

[0028] Fig. 9 This is a partial structural diagram of a seat in an embodiment of the utility model. Figure 2 .

[0029] Reference numerals:

[0030] Airbag body 1, first airbag part 11, first cavity 111, second airbag part 12, second cavity 121, air leakage hole 13, airbag box 14, first drawstring 2, second drawstring 3,

[0031] Seat belt connector 4, seven-point seat belt 5, shoulder seat belt 51, front seat belt 52, waist seat belt 53, hip seat belt 54,

[0032] The seat 6 , the first retractor 61 , the second retractor 62 , the first latching member 63 , the second guide member 64 , the first guide member 65 , the guide hole 651 , the storage box 66 , the third retractor 67 , and the fourth retractor 68 . DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] Reference below Figure 1-Figure 9 Describing the airbag of the embodiment of the utility model, when the vehicle is hit, the occupant will fall forward due to the action of the seat belt. At this time, the airbag quickly inflates from the seat belt connector 4 and the airbag box 14 located in front of the occupant's body toward the front of the occupant's body, providing additional cushioning and protection for the occupant's head and neck.

[0035] like Figure 1-9 As shown, the safety airbag according to the embodiment of the utility model comprises: an airbag box 14 and an airbag body 1 .

[0036] Among them, the airbag box 14 is used to connect to the seat belt connector 4 located on the front side of the occupant, and the airbag body 1 is installed in the airbag box 14. The airbag body 1 has a storage state stored in the airbag box 14 and a deployment state popped out from the airbag box 14. The airbag body 1 includes a first airbag part 11 and a second airbag part 12 that are connected. In the deployed state, the second airbag part 12 is located above the first airbag part 11. The first airbag part 11 is suitable for supporting the legs of the occupant, and the second airbag part 12 is suitable for protecting the head of the occupant.

[0037] In practice, the seat belt connector 4 is located in front of the occupant, the seat belt is connected to the seat belt connector 4 and is used to restrain the occupant, and the airbag box 14 is used to connect with the seat belt connector 4 and is located in front of the occupant. When the vehicle collides, the airbag body 1 in the airbag box 14 is deployed along the front of the occupant to better protect the occupant, and when the occupant's seat is adjusted backward, the airbag body 1 is still deployed along the front of the occupant, and the protection effect of the airbag body 1 on the occupant will not be affected by the change in the occupant's position.

[0038] Specifically, when the occupant is in a lying position, the seat is facing backward and the occupant is more comfortable, but it is not a lying position with the occupant 180 degrees to the horizontal plane. Therefore, when the airbag body 1 in the airbag box 14 is deployed, it is overall toward the front of the occupant and tilted upward, and after deployment, it may include a connected first airbag portion 11 and a second airbag portion 12. That is to say, after the airbag body 1 is deployed at the airbag box 14, it is toward the front of the occupant and while deploying toward the leg position, it also deploys toward the top of the occupant. The first airbag portion 11 can support the occupant's legs and the second airbag portion 12 at the same time. The second airbag portion 12 is deployed upward along the first airbag portion 11, and the positions of the seat belt connector 4 and the airbag box 14 vary with the occupant's sitting posture. The airbag body 1 pops out of the airbag box 14 to protect the occupant's body front and the occupant's head.

[0039] Therefore, the airbag in the embodiment of the utility model is an embrace-type airbag. When the vehicle collides, the airbag body 1 pops out from the airbag box 14 located in front of the occupant, and different parts of the airbag body 1 can protect different parts of the occupant's body. For example, the first airbag part 11 and the second airbag part 12 can protect different parts of the occupant's head, neck, chest, etc., thereby improving the safety of the occupant.

[0040] In some embodiments, the interior of the first airbag portion 11 is a first cavity 111, the interior of the second airbag portion 12 is a second cavity 121, a first pull strap 2 is connected between the front and rear inner walls of the connection between the first cavity 111 and the second cavity 121, and a second pull strap 3 is connected to the front and rear inner walls of the second cavity 121.

[0041] In practice, the first airbag portion 11 is deployed along the front side of the occupant toward the legs and above the legs, and the second airbag portion 12 is deployed along the front side of the occupant toward above the first airbag portion 11. In addition, a first pull strap 2 is provided at the connection between the first cavity 111 and the second cavity 121, and a second pull strap 3 is provided on the front and rear walls of the second cavity 121, and the first pull strap 2 and the second pull strap 3 both extend toward the front side of the occupant. That is to say, when the airbag body 1 is deployed, driven by the first pull strap 2 and the second pull strap 3, the airbag body 1 is deployed along the front side, and the length of the first pull strap 2 determines the length of the first airbag portion 11 deployed toward the front, and the length of the second pull strap 3 determines the length of the second airbag portion 12 deployed toward the front.

[0042] Moreover, the first drawstring 2 is not completely blocked at the connection between the first cavity 111 and the second cavity 121, but is only partially set at the connection between the first cavity 111 and the second cavity 121, that is, the first cavity 111 and the second cavity 121 remain connected, so the first cavity 111 can expand the second cavity 121 while expanding upwards. Specifically, after the vehicle detects a collision signal that the airbag needs to be expanded, the airbag controller of the vehicle will send an ignition signal to ignite the gas generator, which can be set in the airbag box 14. The gas generator generates gas, which first fills the first cavity 111 of the first airbag part 11, and continues to fill the second cavity 121 as the first cavity 111 is filled, so that the airbag body 1 is expanded.

[0043] Thus, the first airbag portion 11 is deployed above the front side of the occupant, and the deployment length toward the front side of the occupant is controlled by the first strap 2. After the first airbag portion 11 is full, it can drive the second airbag portion 12 to deploy upward, and the deployment length of the second airbag portion 12 in front of the occupant can also be controlled by the second strap 3, and the entire airbag body 1 is deployed upward along the legs in front of the occupant. The second airbag portion 12 can provide better protection and cushioning for the entire front side of the occupant's body, and the first airbag portion 11 supports and protects the occupant's legs.

[0044] In some embodiments, the first pull belt 2 is located at a middle position of the first cavity 111 along the transverse direction of the vehicle, and the second pull belt 3 is located at a middle position of the second cavity 121 along the transverse direction of the vehicle.

[0045] That is to say, the first pull strap 2 is located at the connection between the first cavity 111 and the second cavity 121 and is arranged in the middle position along the transverse direction of the vehicle, so that the connection between the first airbag part 11 and the second airbag part 12 and along the transverse direction of the vehicle can be uniformly stressed without being offset. At the same time, the second airbag part 12 is also uniformly stressed along the transverse direction of the vehicle without being offset. Therefore, the combination of the first pull strap 2 and the second pull strap 3 can reasonably control the deployment length and force direction of the airbag body 1, so that the first airbag part 11 is evenly arranged on the two legs of the occupant, so that the first airbag part 11 can evenly protect and support both legs, and in the transverse direction of the vehicle, the second airbag part 12 is evenly deployed on both sides of the second pull strap 3, and the occupant's head can be located in the middle position of the second airbag part 12 to prevent the position displacement between the head and the airbag body 1, which can have a better protection effect on the occupant's head.

[0046] In some embodiments, the first pull strap 2 has a pull strap surface facing up and down of the vehicle, the second pull strap 3 has a pull strap surface facing both lateral sides of the vehicle, and the first pull strap 2 and the second pull strap 3 are perpendicular.

[0047] In practice, the surface of the first drawstring 2 faces the up-down direction of the vehicle, the airbag body 1 is provided with a first cavity 111 at a position below the first drawstring 2, and a second cavity 121 at a position above the first drawstring 2, that is, the surface of the first drawstring 2 faces the up-down direction of the vehicle, which can make the space at the connection between the first cavity 111 and the second cavity 121 larger, and the first drawstring 2 does not completely separate the first cavity 111 and the second cavity 121, which is also convenient for the gas to continue to inflate the second cavity 121 after inflating the first cavity 111; the surface of the second drawstring 3 faces the two sides of the vehicle in the transverse direction, that is, the second airbag part 12 can be divided into left and right parts by the second drawstring 3, and the second drawstring 3 is located in the middle position of the second airbag part 12 along the transverse direction of the vehicle, then after the second drawstring 3 divides the second cavity 121 into left and right parts, and the position of the second drawstring 3 makes the second airbag part 12 along the transverse direction of the vehicle and the middle position of the second airbag part 12 is provided with a groove on the side facing the occupant, which is convenient for adapting to the face and head of the occupant, and has a good buffering effect on the head and face.

[0048] In some embodiments, the width of the first airbag portion 11 in the vehicle transverse direction is smaller than the width of the second airbag portion 12 in the vehicle transverse direction, and the width of the first airbag portion 11 in the vehicle longitudinal direction is smaller than the width of the second airbag portion 12 in the vehicle longitudinal direction.

[0049] In practice, the first airbag portion 11 is used to support the second airbag portion 12, and the first airbag portion 11 is located above the legs of the occupant, and the space between the legs of the occupant and the head of the occupant is relatively large, that is to say, the first airbag portion 11 can be supported on the legs and can support the second airbag portion 12, and the second airbag portion 12 also needs to be close to the entire chest of the occupant and the head, neck and other positions, so that the width of the first airbag portion 11 along the transverse and longitudinal directions of the vehicle is smaller than that of the second airbag portion 12. The second airbag portion 12 is set to have a wider width along the transverse and longitudinal directions of the vehicle, which can fully protect the front side of the occupant's body, and can also better protect and cushion the head, neck, face, chest and other positions.

[0050] In some embodiments, when the airbag body 1 is in the deployed state, the height of the second airbag portion 12 in the vehicle height direction is greater than the height of the first airbag portion 11 .

[0051] Specifically, the second airbag portion 12 is arranged higher, that is, at least the distance from the waist to the head of the occupant. The first airbag portion 11 is deployed toward the legs of the occupant and upward at the same time, providing support and protection for the legs of the occupant. At the same time, when the first airbag portion 11 is supported on the legs of the occupant, when the gas fills the first airbag portion 11, the second airbag portion 12 can be quickly filled with the support of the first airbag portion 11. The second airbag portion 12 is deployed upward and close to the body and head of the occupant. At this time, the front side of the occupant's body can embrace the entire airbag body 1, and the second airbag portion 12 can effectively protect the chest, head and neck of the occupant.

[0052] In addition, it should be noted that the airbag body 1 has an air leakage hole 13 on each side along the lateral direction of the vehicle. When the occupant falls forward on the airbag body 1, the air leakage hole 13 slowly leaks air outward to ensure that the occupant is stably protected; the air leakage holes 13 are arranged on both sides of the airbag body 1 along the lateral direction of the vehicle to avoid being directly opposite to the occupant, preventing the airbag body 1 from facing the occupant's body when deflated at the air leakage holes 13, thereby reducing the occupant's comfort; and the transition area between the first airbag portion 11 and the second airbag portion 12 forms a curved transition, so that when inflating, the first airbag portion 11 can be filled and then the second airbag portion 12 can be filled relatively quickly.

[0053] The utility model embodiment discloses a safety belt assembly, combined with Figure 4-Figure 6 As shown, the safety belt assembly includes a seven-point safety belt 5 and the above-mentioned airbag, and the seven-point safety belt 5 includes a first safety belt structure and a second safety belt structure; the first safety belt structure includes two shoulder safety belts 51, and the two shoulder safety belts 51 are restrained on both sides of the shoulders of the occupant. By adding two shoulder safety belts 51, the occupants in the car can be restrained more effectively and the force of the safety belt on the occupants can be further dispersed, avoiding excessive force on a certain contact part of the occupant.

[0054] The second safety belt structure includes a safety belt connector 4 and a crotch safety belt 54, two lap safety belts 53 and two front safety belts 52 which are selectively plugged into the safety belt connector 4. The safety belt connector 4 is suitable for being installed on the front side of the abdomen of the occupant. The two lap safety belts 53 are suitable for being restrained on both sides of the waist of the occupant. The two front safety belts 52 are suitable for being restrained on both sides of the front of the occupant respectively. The crotch safety belt 54 is suitable for being restrained between the legs of the occupant. The airbag box 14 is connected to the front side of the safety belt connector 4.

[0055] In practice, combined Figure 7 As shown, the first safety belt structure also includes a first retractor 61 and two first latches 63, and the two shoulder safety belts 51 are respectively distributed in a one-to-one correspondence with the two first latches 63; wherein, the first retractor 61 and the first latch 63 are both suitable for being installed on the backrest of the seat 6, one end of the shoulder safety belt 51 is retracted on the first retractor 61, and the other end is suitable for passing forward from the upper part of the corresponding shoulder around the shoulder to the lower part of the shoulder to be plugged into the first latch 63, so that the two shoulder safety belts 51 can restrain and protect the shoulders of the occupants, thereby improving the safety of the occupants.

[0056] Furthermore, the first safety belt structure further includes a first guide member 65, which is installed at a position of the seat back 6 corresponding to the neck of the occupant, and the first guide member 65 is provided with two guide holes 651, and the two shoulder safety belts 51 are passed from the first retractor 61 to the first guide member 65 and respectively led out from the two guide holes 651 toward the shoulders on both sides, wherein, Figure 7 The seat belts in the figure are only schematic diagrams and do not represent the number of seat belts. The two shoulder seat belts 51 can be smoothly pulled out or retracted through the first guide member 65, and the positions of the two shoulder seat belts 51 are also made more stable, thereby preventing the occupants from making large position changes and improving the stability and safety of the upper side of the occupants' bodies.

[0057] The second safety belt structure also includes a second retractor 62, which is suitable for being installed on the backrest of the seat 6; wherein, one end of the two front safety belts 52 are respectively retracted on the second retractor 62, and the other ends of the two front safety belts 52 are suitable for respectively passing forward from the shoulders of the occupant on both sides and downwardly plugging into the safety belt connector 4, and the two front safety belts 52 can be used to restrain the entire upper body of the occupant through the second retractor 62, thereby ensuring the stability and safety of the entire upper body of the occupant.

[0058] Furthermore, the second safety belt structure also includes two second guide members 64, which are suitable for being installed at positions corresponding to the seat back 6 and above the shoulders of the occupants on both sides, and the two front safety belts 52 are respectively passed through the two second guide members 64 in a one-to-one correspondence. The two front safety belts 52 can be smoothly pulled out or retracted through the second guide members 64.

[0059] Furthermore, combined Figure 8 and Fig. 9 As shown, the second safety belt structure also includes a third retractor 67, which is suitable for being installed on the seat cushion of the seat 6, one end of the two waist safety belts 53 is respectively retracted on the third retractor 67, and the other end of the two waist safety belts 53 is suitable for being respectively passed around the waist from both sides of the occupant to the front and plugged into the safety belt connector 4; and / or, the second safety belt structure also includes a fourth retractor 68, which is suitable for being installed on the seat cushion, one end of the crotch safety belt 54 is retracted on the fourth retractor 68, and the other end of the crotch safety belt 54 is suitable for being plugged into the safety belt connector 4 from between the legs of the occupant.

[0060] Therefore, the seven-point safety belt 5 used in the embodiment of the utility model can provide good protection for the upper body, shoulders, waist, spine, etc. of the occupant, and improve the safety of the occupant when the vehicle is hit; and the crotch safety belt 54, the two waist safety belts 53 and the two front safety belts 52 are all connected to different surfaces of the safety belt connector 4, and the safety belt connector 4 can be connected to both the safety belt and the airbag box 14. The airbag body 1 is normally in the airbag box 14, and when the vehicle is hit, the airbag body 1 pops up and unfolds from the front side of the occupant to form an embrace-type airbag body 1. That is to say, on the basis of the seven-point safety belt 5, with the front embrace airbag body 1, when a collision occurs, the occupant will have a forward posture under the action of the seven-point safety belt 5, and will not have a large displacement in other directions. At this time, the airbag body 1 is rapidly inflated to provide additional cushioning and protection for the head and neck of the occupant, that is to say, the airbag body 1 combined with the seven-point safety belt 5 can have a good protection effect on the occupant.

[0061] In some embodiments, the seat belt connector 4 is constructed as a polygonal structure, which includes at least five connecting parts, and the five connecting parts are respectively used to connect one end of the waist seat belt 53, the front seat belt 52 and the crotch seat belt 54.

[0062] As in practice, the cross-section of the seat belt connector 4 is a pentagonal structure, and five connecting parts can be set on the faces corresponding to the five sides of the pentagonal structure, and these five connecting parts correspond to one end of a crotch seat belt 54, two waist seat belts 53 and two front seat belts 52 respectively. The seat belt connector 4 is set on the front side of the occupant's body to facilitate the connection of the crotch seat belt 54, two waist seat belts 53 and two front seat belts 52, and also to facilitate the integrated setting of the airbag box 14, so that the airbag body 1 pops out from the airbag box 14 on the front side of the occupant's body.

[0063] Of course, the cross-section of the seat belt connector 4 is not limited to being set as a pentagonal structure, and can also be set as a hexagonal structure, a heptagonal structure or other structures that are convenient for setting five connecting parts, as long as the crotch seat belt 54, two waist seat belts 53 and two front seat belts 52 can be connected to different positions of the seat belt connector 4 and the airbag box 14 can be connected to the front side of the seat belt connector 4.

[0064] For example, the airbag box 14 is located in front of the seat belt connector 4 to form a two-layer structure, that is, the front layer is the airbag box 14 and the back layer is the seat belt connector 4, so that the connection of the seat belt and the storage and ejection of the airbag body 1 do not affect each other.

[0065] In some embodiments, the airbag box 14 is configured in a polygonal shape and has the same shape as the seat belt connector 4 .

[0066] In practice, the structure of the airbag box 14 is set to be the same as the shape of the seat belt connector 4, which improves the integrity of the airbag box 14 and the seat belt connector 4 and also makes the airbag box 14 and the seat belt connector 4 more integrated after being connected. The airbag box 14 and the seat belt connector 4 occupy the same area on the front side of the occupant's abdomen along the lateral direction of the vehicle, saving space on the front side of the occupant's abdomen along the lateral direction of the vehicle, and facilitating the protection of the front side of the occupant's body after the airbag body 1 is deployed.

[0067] In addition, a storage box 66 can be provided on the side of the seat 6. After the seat belt connector 4 and the air bag box 14 are provided as a whole, the whole structure formed by the seat belt connector 4 and the air bag box 14 is placed in the storage box 66 on the side of the seat 6, and the seat belt connector 4 and the air bag box 14 can be retracted together at the third retractor 67 through a waist seat belt 53, that is, a waist seat belt 53 can always be connected to a connecting portion of the seat belt connector 4, which is equivalent to a waist seat belt 53 always being connected to the seat belt connector 4 and the air bag box 14. Then, when in use, the seat belt connector 4 and the air bag box 14 are taken out of the storage box 66. The seat belt connector 4 and the airbag box 14 are pulled out and one end is pulled out along one side of the third retractor 67. At this time, it is only necessary to continue to connect another waist seat belt 53, two front seat belts 52 and one crotch seat belt 54 to the other four connecting parts of the seat belt connector 4, so that the seat belt connector 4 and the airbag box 14 can be pulled to the front side of the occupant's body, and the seat belt connector 4 and the airbag box 14 are retracted on the third retractor 67, so as to be connected to the seat 6, so as to avoid the seat belt connector 4 and the airbag box 14 being placed in other positions and difficult to take out when in use, and to make the seat belt connector 4 and the airbag box 14 always as a whole with the seat 6, so as to facilitate the protection of the occupant by the seat belt and the airbag body 1.

[0068] The utility model embodiment also discloses a vehicle, including the above-mentioned safety belt assembly. When the occupant is in a lying state, the occupant is restrained and protected by the seven-point safety belt 5. When the vehicle is hit, the occupant will fall forward under the action of the seven-point safety belt 5. At this time, the airbag is rapidly inflated from the airbag box 14 located in front of the occupant's body toward the front of the occupant's body, providing additional cushioning and protection for the occupant's head and neck.

[0069] In addition, the embodiment of the utility model is further provided with a safety detection system based on the seat belt assembly and the airbag. For example, the seat 6 includes a seat back occupant detection sensor and a seat back angle measurement sensor. The vehicle is also provided with a seat belt unfastened reminder system and an in-vehicle occupant detection camera.

[0070] When the vehicle is initially started, the vehicle is in gear "on". When the vehicle speed is > 0, and the occupants are in a normal sitting position, they need to wear the four-point safety belts. If the four-point safety belts are not worn, the vehicle starts to give sound and light reminders until the occupants fasten their safety belts. The four-point safety belts, namely the two front safety belts 52 and the two waist safety belts 53 mentioned above, can protect the occupants in a normal sitting position.

[0071] During the operation of the vehicle, the occupant changes from a sitting position to a lying position, and the system continuously detects. When the seat back occupant detection sensor detects that there is an occupant sitting, and the in-vehicle occupant monitoring camera determines that the occupant is in a lying position, and the seat back angle measurement sensor detects that the seat back angle is greater than a preset angle (such as 35 degrees), where the seat back angle is the angle between the seat back and the vertical direction of the vehicle, the system determines that the occupant is in a lying position. Multi-dimensional judgment can ensure the stability of the system. When the system determines that the occupant is in a lying position, the system pops up the shoulder safety belt 51 and the hip safety belt 54, and prompts the occupant to fasten the seven-point safety belt 5. If the occupant does not fasten the seven-point safety belt 5, the system will continue to prompt for more than 2s to ensure that the occupant is in a safe state.

[0072] When the front camera and radar of the vehicle detect that the vehicle is in a dangerous state, the AEB (automatic emergency braking system) is activated, and the system continues to detect whether there is a collision signal. If so, the airbag body 1 in the airbag box 14 in the front will pop out quickly and be located in front of the occupant. The airbag body 1 explodes forward and upward, and the length of the explosion in front of the occupant is adjusted by the first and second straps 2 and 3. During the collision, the occupant is restrained by the seven-point seat belt 5 and rotates forward, and the airbag body 1 protects the head and neck.

[0073] 1. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0074] 2. In the description of the present utility model, "first feature" and "second feature" may include one or more of these features.

[0075] 3. In the description of this utility model, "plurality" means two or more.

[0076] 4. In the description of the present invention, a first feature “above” or “below” a second feature may include that the first and second features are directly in contact, or may include that the first and second features are not in direct contact but are in contact via another feature between them.

[0077] 5. In the description of the present utility model, the first feature “above”, “above” and “on” the second feature includes the first feature being directly above and diagonally above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0079] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A safety airbag, characterized in that: include: An airbag box, the airbag box being used to be connected to a seat belt connector located on the front side of the occupant; An airbag body, wherein the airbag body is installed in the airbag box, and the airbag body has a storage state in the airbag box and a deployment state in which the airbag body pops out from the airbag box. The airbag body includes a first airbag portion and a second airbag portion that are connected. In the deployment state, the second airbag portion is located above the first airbag portion. The first airbag portion is suitable for supporting the legs of an occupant, and the second airbag portion is suitable for protecting the head of the occupant.

2. The airbag according to claim 1, characterized in that: The interior of the first airbag portion is a first cavity, the interior of the second airbag portion is a second cavity, a first drawstring is connected between the front and rear inner walls of the connection between the first cavity and the second cavity, and a second drawstring is connected to the front and rear inner walls of the second cavity.

3. The airbag according to claim 2, characterized in that: The first drawstring is located at a middle position of the first cavity along the transverse direction of the vehicle, and the second drawstring is located at a middle position of the second cavity along the transverse direction of the vehicle.

4. The airbag according to claim 3, characterized in that: The surface of the first pull strap faces the up-down direction of the vehicle, the surface of the second pull strap faces the lateral sides of the vehicle, and the first pull strap is perpendicular to the second pull strap.

5. The airbag according to claim 1, characterized in that: The width of the first airbag portion in the vehicle transverse direction is smaller than the width of the second airbag portion in the vehicle transverse direction, and the width of the first airbag portion in the vehicle longitudinal direction is smaller than the width of the second airbag portion in the vehicle longitudinal direction.

6. The airbag according to claim 1, characterized in that: When the airbag body is in a deployed state, a height of the second airbag portion in a vehicle height direction is greater than a height of the first airbag portion.

7. A seat belt assembly, characterized in that: A seven-point safety belt and an airbag according to any one of claims 1 to 6, wherein the seven-point safety belt comprises a first safety belt structure and a second safety belt structure; The first safety belt structure includes two shoulder safety belts, and the two shoulder safety belts are restrained on both sides of the occupant's shoulders; The second safety belt structure includes a safety belt connector and a crotch safety belt, two waist safety belts and two front safety belts which are selectively plugged into the safety belt connector respectively. The safety belt connector is suitable for being installed on the front side of the abdomen of the occupant. The two waist safety belts are suitable for being restrained on both sides of the waist of the occupant. The two front safety belts are suitable for being restrained on both sides of the front of the occupant respectively. The crotch safety belt is suitable for being restrained between the legs of the occupant. The airbag box is integrated on the front side of the safety belt connector.

8. The seat belt assembly according to claim 7, characterized in that: The seat belt connector is constructed as a polygonal structure, which includes at least five connecting parts, and the five connecting parts are respectively used to connect one end of the waist seat belt, the front seat belt and the crotch seat belt.

9. The safety belt assembly according to claim 7, characterized in that: The airbag box is configured in a polygonal shape and has the same shape as the seat belt connector.

10. A vehicle, characterized in that: A safety belt assembly comprising any one of claims 7 to 9.

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