Safety air bag system and vehicle

Abstract

The invention provides a safety air bag system and a vehicle. The safety air bag system comprises a steering wheel and a safety air bag installed on the steering wheel. The steering wheel comprises a peripheral rim, a central wheel disc and a spoke, and the peripheral rim is provided with a notch; one end of the spoke is connected to the peripheral rim, and the other end of the spoke is connected to the central wheel disc; the safety air bag comprises a main air bag body and a supporting air bag body, and the main air bag body and the supporting air bag body both have a folded state and an inflated state after expansion. A front side and a rear side are defined, the side facing a front windshield of the vehicle is the front side, the side opposite to the front side is the rear side, and in the inflation state, the supporting air bag is supported on the front side of the steering wheel, and the main air bag is supported on the rear side of the steering wheel. The safety air bag system is directly supported by means of the steering wheel without an instrument surface and the like, a driver can be better protected, and the safety coefficient is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle safety technology, and in particular to an airbag system and a vehicle. Background Art

[0002] Traditional steering wheels are usually round, and include spokes and a rim surrounding the spokes. With the development of intelligent driving vehicle technology, the size of the front entertainment display screen is required to be larger and larger. The spokes of traditional steering wheels often block the display screen, resulting in asymmetrical half-width steering wheels. Accordingly, an airbag installed on the spokes of an asymmetrical steering wheel is designed.

[0003] like Figure 1 As shown, Figure 1 The present invention is a structural schematic diagram of a safety airbag device, which is suitable for special-shaped steering wheels.

[0004] Figure 1 The figure shows an airbag device with a small supporting cavity 1'. After the airbag device is triggered, the small supporting cavity 1' of the airbag will be supported on the instrument surface 2' of the car. However, the height of the car steering wheel is often adjustable, that is, as the height of the car steering wheel increases, the small supporting cavity 1' may not contact the instrument surface 2' and cannot play a supporting role; as the height of the car steering wheel decreases, the small supporting cavity 1' will interfere with the instrument surface 2'. The existence of the above situations makes it difficult for the airbag to protect the driver. Summary of the invention

[0005] The purpose of the present application is to provide an airbag system and a vehicle, wherein the airbag system can support the supporting airbag of the airbag on the steering wheel in an inflated state, thereby better protecting the passengers.

[0006] In order to solve the above technical problems, the present application provides an airbag system, the airbag system comprising a steering wheel and an airbag installed on the steering wheel;

[0007] The steering wheel comprises an outer rim, a central wheel disc and spokes, wherein the outer rim has a notch; one end of the spoke is connected to the outer rim, and the other end of the spoke is connected to the central wheel disc;

[0008] The safety airbag comprises a main airbag and a support airbag, wherein both the main airbag and the support airbag have a folded state and an inflated state after expansion;

[0009] The front side and the rear side are defined, the side facing the windshield of the vehicle is the front side, and the side opposite to the front side is the rear side. In the inflated state, the support airbag is supported on the front side of the steering wheel, and the main airbag is supported on the rear side of the steering wheel.

[0010] Optionally, the steering wheel includes two spokes, and the supporting airbag is provided as one;

[0011] Or, the steering wheel includes three spokes, one of which is a lower spoke, and the lower spoke is located below the steering wheel opposite to the notch; the airbag system includes two support airbags, and in the inflated state, the two support airbags are distributed on both sides of the lower spoke.

[0012] Optionally, the steering wheel comprises two spokes, the lower portion of the main airbag has a first opening; the upper portion of the support airbag has a second opening corresponding to the first opening; the main airbag and the support airbag are sewn into a whole through the first opening and the second opening;

[0013] Or, the steering wheel includes three spokes, the two support air bags are respectively the first support air bag and the second support air bag, the steering wheel includes three spokes, the lower part of the main air bag has a third opening and a fourth opening which are independent of each other, the upper part of the first support air bag has a fifth opening corresponding to the third opening, and the second support air bag has a sixth opening corresponding to the fourth opening; the main air bag and the first support air bag are sewn into a whole through the third opening and the fifth opening, and the main air bag and the second support air bag are sewn into a whole through the fourth opening and the sixth opening.

[0014] Optionally, the supporting air bag is arranged on a side away from the notch;

[0015] The steering wheel comprises two spokes, and one side of the support air bag is supported on the left side of the outer rim in the inflated state, and the other side is supported on the right side of the outer rim;

[0016] Alternatively, the steering wheel includes three spokes, and the first support airbag and the second support airbag are respectively supported on the left and right sides of the outer rim in the inflated state.

[0017] Optionally, the main airbag comprises an upper main airbag fabric piece and a lower main airbag fabric piece which are sewn to each other.

[0018] Optionally, the support airbag comprises an upper support airbag fabric piece and a lower support airbag fabric piece which are sewn to each other.

[0019] Optionally, the upper main airbag fabric panel and the lower main airbag fabric panel are both circular fabric panels.

[0020] Optionally, the upper supporting airbag fabric piece and the lower supporting airbag fabric piece are both square fabric pieces.

[0021] Optionally, the main airbag can be folded into a layered structure in the folded state, and the support airbag is folded under the main airbag;

[0022] The steering wheel comprises two spokes, and the left and right parts of the support airbag are folded on the main airbag respectively;

[0023] Alternatively, the steering wheel includes three spokes, and the first support airbag and the second support airbag are folded on the main airbag respectively.

[0024] Optionally, the sewn portions of the main airbag and the support airbag form a communication channel in the inflated state.

[0025] The present application also provides a vehicle, comprising the safety airbag system described in any one of the above items.

[0026] In the present application, the airbag system includes a steering wheel and an airbag, and the airbag includes a main airbag and a support airbag. The main airbag and the support airbag will expand when inflated. The main airbag is supported on the front side of the steering wheel when inflated, and the support airbag is supported on the rear side of the steering wheel when inflated. In this way, the airbag is no longer supported by the instrument surface, but can be supported and fixed only by cooperating with the steering wheel, which is more stable and improves the safety factor.

[0027] The vehicle provided in the present application includes the airbag system described in any one of the above items and has the same technical effect as the above airbag system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of an airbag system;

[0029] Figure 2 This is a schematic diagram of the structure of the airbag system in Example 1 of the present application;

[0030] Figure 3 for Figure 2 A schematic diagram of the structure from another perspective;

[0031] Figure 4 for Figure 2 Schematic diagram of the structure of the steering wheel;

[0032] Figure 5 for Figure 2 Schematic diagram of the sewing of the airbag;

[0033] Figure 6 for Figure 2 A schematic diagram of the structure of the central airbag viewed from the rear side to the front side of the steering wheel;

[0034] Figure 7 for Figure 5Schematic diagram of the shape of the middle and lower main airbag fabric;

[0035] Figure 8 for Figure 5 Schematic diagram of the shape of the middle and upper supporting air bag fabric piece;

[0036] Fig. 9 for Figure 2 A cross-sectional view of the middle airbag in an inflated state;

[0037] Fig.10 for Figure 2 Schematic diagram of the airbag in the folded state;

[0038] Fig.11 A side view of the airbag system in Embodiment 1 of the present application;

[0039] Fig.12 This is a schematic diagram of the structure of the airbag system in the second embodiment of the present application;

[0040] Fig.13 for Fig.11 A schematic diagram of the structure from another perspective;

[0041] Fig.14 for Fig.11 Schematic diagram of the structure of the steering wheel;

[0042] Fig.15 for Fig.12 Schematic diagram of the sewing of the airbag;

[0043] Fig.16 for Fig.15 Schematic diagram of the shape of the middle and lower main airbag fabric;

[0044] Fig.17 for Fig.15 A schematic diagram of the shape of the upper supporting air bag fabric piece of the first supporting air bag;

[0045] Fig.18 for Fig.15 A schematic diagram of the shape of the upper supporting air bag fabric piece of the second supporting air bag;

[0046] Fig.19 for Fig.12 A cross-sectional view of the middle airbag in an inflated state;

[0047] Fig. 20 for Fig.12 Schematic diagram of the airbag in the folded state.

[0048] The following are the descriptions of the reference numerals:

[0049] 1'-support small cavity; 2'-instrument surface;

[0050] 1-steering wheel; 11-outer rim; 11a-notch; 12-center wheel disc; 13-spoke; 131-lower spoke;

[0051] 2-safety airbag; 21-main airbag; 21a-first opening; 21b-third opening; 21c-fourth opening; 211-upper main airbag fabric; 212-lower main airbag fabric; 22-support airbag; 22a-second opening; 221-first support airbag; 221a-fifth opening; 222-second support airbag; 222a-sixth opening; 223-upper support airbag fabric; 224-lower support airbag fabric;

[0052] 3-Connecting channels;

[0053] 4- Gas generator. DETAILED DESCRIPTION

[0054] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the embodiments of the present application, the terms "first" and "second" are mainly used to distinguish the same or similar features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0055] There are two embodiments in this application. Embodiment 1 is an airbag system for a special-shaped steering wheel with two spokes, and embodiment 2 is an airbag system for a special-shaped steering wheel with three spokes. The front and rear directions in this application are defined as the direction relative to the front windshield of the vehicle. The direction toward the front windshield is the front, and the direction away from the front windshield of the vehicle is the rear. The front and rear directions can be referred to Fig.11 understand.

[0056] Embodiment 1

[0057] Please refer to Figures 2 to 4 , Figure 2 Schematic diagram of the structure of the airbag system in the first embodiment of the present application. Figure 2 The airbag 2 is in a triggered and expanded state; Figure 3 for Figure 2 A schematic diagram of the structure from another perspective, which is a perspective viewed from bottom to top; Figure 4 for Figure 2 A schematic structural diagram of the steering wheel 1.

[0058] Depend on Figure 1 , 2It can be seen that the airbag system in this embodiment includes a steering wheel 1 and an airbag 2. Specifically, the steering wheel 1 in this embodiment is a two-spoke special-shaped steering wheel, and the steering wheel 1 is provided with two spokes 13. The steering wheel 1 includes an outer rim 11, a central wheel disc 12 and spokes 13. The outer rim 11 has a notch 11a, that is, the outer rim 11 is not a complete circle. When the steering wheel 1 does not rotate (that is, when the steering wheel 1 is returned to the center), the notch 11a is located above the top of the outer rim 11. One end of the spoke 13 is connected to the outer rim 11, and the other end is connected to the central wheel disc 12. In the first embodiment, the two spokes 13 are both arranged on the upper part of the outer rim 11, and one is distributed on the left side and the other is distributed on the right side. In this way, the steering wheel 1 will not easily block the instrument surface in the car, and the visual field space occupied is small. Correspondingly, for this steering wheel 1, the airbag 2 equipped therewith is also improved accordingly in this embodiment.

[0059] The airbag 2 includes a main airbag 21 and a support airbag 22, both of which have a folded state and an inflated state after expansion. When there is no risk of collision, the main airbag 21 and the support airbag 22 are folded in the steering wheel 1, which is convenient for storage and saves space; when there is a risk of collision, the gas generator 4 equipped with the airbag 2 will explode, so that the main airbag 21 and the support airbag 22 are inflated. In the inflated state, the main airbag 21 expands to form a large cavity, which is supported on the rear side of the steering wheel 1 and is used to contact the passengers, and plays a role of protecting and buffering the drivers and other passengers, and preventing the heads of the passengers from directly colliding with hard objects; the support airbag 22 expands to form a small cavity, which is supported on the front side of the steering wheel 1, and plays a role of supporting the entire airbag 2. The airbag 2 does not rely on the instrument surface to achieve positioning and support, and can better protect the driver.

[0060] like Figures 2 to 10 As shown, it is not difficult to see that for the steering wheel 1 in the first embodiment of the present application, the distribution position of the spokes 13 will not affect the expansion of the support airbag 22. The spokes 13 in this embodiment are only arranged on the left and right sides of the steering wheel 1 near the top, and the support airbag 22 is located below the spokes 13. The support airbag 22 can be set as a complete structure without avoiding the spokes 13. When the support airbag 22 is inflated and expands through the steering wheel 1 to reach the front side of the steering wheel 1, a complete inverted T-shaped cavity structure can be formed. At the same time, the inverted T-shaped cavity formed by the expansion of the support airbag 22 can press the outer rim 11 of the steering wheel 1, and press against the outer rim 11 from front to back, which makes up for the problem of uneven support force caused by the missing top of the steering wheel 1, which is conducive to the expected deployment of the airbag and improves the stability of the inflated airbag 2.

[0061] Look again Figures 5 to 10 Understand, please Figure 5 for Figure 2 A schematic diagram of the sewing of the middle airbag 2; Figure 6 for Figure 2 A schematic structural diagram of the middle airbag 2 viewed from the rear side to the front side of the steering wheel 1; Figure 7 for Figure 5 A schematic diagram of the shape of the middle and lower main air bag fabric sheet 212; Figure 8 for Figure 5 A schematic diagram of the shape of the middle upper supporting air bag fabric piece 223; Fig. 9 for Figure 2 A cross-sectional view of the airbag 2 in an inflated state; Fig.10 for Figure 2 Schematic diagram of the airbag 2 in the folded state.

[0062] A first opening 21a is provided below the main airbag 21, and correspondingly, a second opening 22a is provided above the support airbag 22. The first opening 21a and the second opening 22a correspond to each other and can both be set as square openings. The main airbag 21 and the support airbag 22 are sewn together as a whole through the first opening 21a and the second opening 22a. In this way, a short cavity can be formed at the connection, and at the same time, it can be ensured that only one gas generator 4 is provided, and the airflow enters the main airbag 21 to inflate the main airbag 21, and then enters the support airbag 22 to inflate the support airbag 22.

[0063] Combination Figure 2 and Fig.10 It can be seen that the support airbag 22 in the first embodiment of the present application should be arranged on the side of the steering wheel 1 away from the notch 11a. Specifically, in the folded state, the main airbag 21 and the support airbag 22 are both arranged in the steering wheel 1. At this time, the main airbag 21 is folded and compressed, and the support airbag 22 is arranged on the side of the main airbag 21 away from the notch 11a instead of the center of the main airbag 21. In this way, the support airbag 22 can expand and extend from the lower side of the steering wheel 1 after expansion, and one side of the support airbag 22 is supported on the lower left side of the outer rim 11, and the other side is supported on the lower right side of the outer rim 11. In this way, it will not be stuck by the spokes 13, and will not be unable to achieve support due to the notch 11a after expansion. The left and right directions in the present application can be defined based on the driver and other passengers. When the passengers face the windshield, the left and right of the passengers are the left and right described in this embodiment. It can be seen Figure 2 The middle is a perspective of the steering wheel 1 viewed from the front side of the vehicle, Figure 2 The left and right directions are exactly opposite to the left and right directions of the passengers, but the left and right directions in both perspectives are the width directions of the vehicle.

[0064] In this embodiment, the main air bag 21 includes an upper main air bag fabric sheet 211 and a lower main air bag fabric sheet 212 (shown in FIG. Figure 5), wherein the first opening 21a is provided on the lower main airbag fabric sheet 212, and the main airbag 21 forms a large cavity structure when inflated. Specifically, the large cavity formed by the expansion of the main airbag is located between the steering wheel 1 and the passenger. The main airbag 21 is provided as an upper main airbag fabric sheet 211 and a lower main airbag fabric sheet 212 sewn together, and the size of the fabric sheet during cutting will be correspondingly reduced, and space arrangement is convenient.

[0065] Accordingly, the support airbag 22 includes an upper support airbag fabric piece 223 and a lower support airbag fabric piece 224 sewn together, wherein the second opening 22a is provided on the upper support airbag fabric piece 223 so as to be sewn with the lower main airbag fabric piece 212. Similarly, by configuring the support airbag 22 as an upper support airbag fabric piece 223 and a lower support airbag fabric piece 224 sewn together, the size of the fabric piece during cutting can be reduced, and it is also easy to arrange in space.

[0066] like Fig.10 As shown, the connecting and sewing parts of the main airbag 21 and the support airbag 22 form a connecting channel 3. In the inflated state, the connecting channel 3 will expand into a small cavity, which is conducive to the support airbag 22 passing through the space between the spoke 13 and the outer rim 11 and extending to the front side of the steering wheel 1. The gas generator 4 is arranged in the steering wheel 1 and connected to the airbag 2. In this way, when a collision occurs, after the gas generator 4 is detonated, the airflow enters the airbag 2. The setting of the connecting channel 3 is conducive to the airflow to enter the main airbag 21 of the airbag 2 first, and slow down the speed of the airflow entering the support airbag 22. The main airbag 21 is filled as soon as possible to establish a protective barrier as soon as possible, so as to achieve better protection for the passengers; the opening speed of the support airbag 22 is slightly slower than that of the main airbag 21. After the main airbag 21 is filled, the airflow is more likely to flow to the support airbag 22, so that the support airbag 22 is fully inflated and expanded to play a supporting role.

[0067] Combination Figure 7 and Figure 6 It can be seen that the upper main airbag cloth piece 211 and the lower main airbag cloth piece 212 are both circular cloth pieces. In this way, the upper main airbag cloth piece 211 and the lower main airbag cloth piece 212 are sewn together to form a complete main airbag 21. The large cavity formed after the main airbag 21 is inflated is spherical, which will fit the head better and be more comfortable when cushioning.

[0068] Combination Figure 6 and Figure 8 It can be seen that the upper supporting airbag cloth piece 223 and the lower supporting airbag cloth piece 224 are both square cloth pieces. In this way, the upper supporting airbag cloth piece 223 and the lower supporting airbag cloth piece 224 are sewn together to form a complete supporting airbag 22. The small cavity formed after the supporting airbag 22 is inflated is a cylindrical structure, which is convenient for realizing the supporting function.

[0069] refer to Fig.10 The main airbag 21 is folded into a layered structure in the folded state, and the supporting airbag 22 is folded under the main airbag 21, and the left side is folded first and then the right side, or the right side is folded first and then the left side. In this way, the space utilization rate can be improved and the space can be saved. At the same time, such a structure also facilitates the expansion of the safety airbag 2 and facilitates the passage of airflow.

[0070] The specific sewing method and folding method of the airbag 2 of this embodiment are as follows:

[0071] S1, first align the first opening 21a of the lower main airbag fabric sheet 212 and the second opening 22a of the upper support airbag fabric sheet 223, and sew the lower main airbag fabric sheet 212 and the upper support airbag fabric sheet 223 together along the opening;

[0072] S2, aligning the upper main airbag fabric sheet 211 and the lower main airbag fabric sheet 212, and sewing them along the circular edge line;

[0073] S3, align the lower supporting airbag fabric piece 224 and the upper supporting airbag fabric piece 223, and sew them along the square edge line, and the airbag 1 is sewn;

[0074] S4, fold the main airbag 21 into a layered structure, and fold the support airbag 22 left to right (as shown in FIG. Fig.10 ), and finally seal it on the steering wheel 1.

[0075] Please refer to Fig.11 , Fig.11 It is a side view of the airbag system in the first embodiment of the present application.

[0076] Thus, when danger occurs, the gas generator 4 explodes (shown in FIG. Fig.11 ), the airflow mainly enters the main airbag 21 to inflate the main airbag 21, and part of the airflow enters the support airbag 22. After the support airbag 22 is inflated, it hooks the right and left sides of the steering wheel 1 to support the main airbag 21, thereby protecting the passengers.

[0077] Embodiment 2

[0078] Please refer to Figure 12 to Figure 14 , Fig.12 This is a schematic diagram of the structure of the airbag system in the second embodiment of the present application; Fig.13 for Fig.11 A schematic diagram of the structure from another perspective, which is a perspective viewed from bottom to top; Fig.14 for Fig.11 A schematic structural diagram of the steering wheel 1.

[0079] The principles of the second embodiment are the same as those of the first embodiment, and the similarities are not repeated here. The difference is that the steering wheel 1 in this embodiment is specifically a three-spoke special-shaped steering wheel, and is provided with three spokes 13. In this embodiment, two spokes 13 are provided at the upper part of the outer rim 11, and one is distributed on the left side and the other is distributed on the right side, which corresponds to the first embodiment, and the remaining other spoke 13 is provided below the notch 11a, which is the lower spoke 131.

[0080] Accordingly, if Fig.12 As shown, because the distribution position of the lower spoke 131 will affect the expansion of the support airbag 22, the support airbag 22 cannot be set as a complete structure, and needs to be set away from the lower spoke 131. In this case, two independent support airbags 22 can be set, namely the first support airbag 221 and the second support airbag 222. When the two support airbags 22 are inflated and pass through the steering wheel 1 to the front side of the steering wheel 1, two L-shaped cavity structures can be formed, such as Fig.19 At the same time, the L-shaped cavity formed by the expansion of the support airbag 22 can press the outer rim 11 of the steering wheel 1 to make up for the uneven support force caused by the missing top of the steering wheel 1, which is conducive to the airbag as expected and improves the stability of the inflated airbag 2.

[0081] Look again Figures 15 to 20 , Fig.15 for Fig.12 A schematic diagram of the sewing of the middle airbag 2; Fig.16 for Fig.15 A schematic diagram of the shape of the middle and lower main air bag fabric sheet 212; Fig.17 for Fig.15 A schematic diagram of the shape of the upper supporting air bag fabric piece 223 of the first supporting air bag 221; Fig.18 for Fig.15 A schematic diagram of the shape of the upper supporting air bag fabric piece 223 of the second supporting air bag 222; Fig.19 for Fig.12 A cross-sectional view of the airbag 2 in an inflated state; Fig. 20 for Fig.12 Schematic diagram of the airbag 2 in the folded state.

[0082] In this embodiment, the lower part of the main airbag 21, i.e., the lower main airbag fabric sheet 212, is provided with a third opening 21b and a fourth opening 21c. The upper part of the first support airbag 221, i.e., the upper support airbag fabric sheet 223 on the left, is provided with a fifth opening 221a. The third opening 21b and the fifth opening 221a correspond to each other and can both be set as square openings. The upper part of the second support airbag 222, i.e., the upper support airbag fabric sheet 223 on the right, is provided with a sixth opening 222a. The fourth opening 21c and the sixth opening 222a correspond to each other and can both be set as square openings. The main airbag 21 and the first support airbag 221 are sewn together as a whole through the third opening 21b and the fifth opening 221a. The main airbag 21 and the second support airbag 222 are sewn together as a whole through the fourth opening 21c and the sixth opening 222a.

[0083] refer to Fig. 20 The main airbag 21 is folded into a layered structure in the folded state, and the two support airbags 22 (the first support airbag 221 and the second support airbag 222) are folded under the main airbag 21, and there is a gap between the two support airbags 22, which can be used to avoid the lower spoke 131 in the inflated state.

[0084] The specific sewing method and folding method of the airbag 2 of this embodiment are as follows:

[0085] S1, align the third opening 21b of the lower main airbag fabric sheet 212 with the fifth opening 221a of the upper support airbag fabric sheet 223 of the first support airbag 221, and sew the lower main airbag fabric sheet 212 and the upper support airbag fabric sheet 223 of the first support airbag 221 together along the opening;

[0086] S2, aligning the lower supporting airbag fabric piece 224 of the first supporting airbag 221 with the upper supporting airbag fabric piece 223 of the first supporting airbag 221, and sewing them together along their edge lines;

[0087] S3, align the fourth opening 21c of the lower main airbag fabric sheet 212 with the sixth opening 222a of the upper supporting airbag fabric sheet 223 of the second supporting airbag 222, and sew the lower main airbag fabric sheet 212 and the upper supporting airbag fabric sheet 223 of the second supporting airbag 222 together along the opening;

[0088] S4, aligning the lower supporting air bag fabric piece 224 of the second supporting air bag 222 and the upper supporting air bag fabric piece 223 of the second supporting air bag 222, and sewing them together along their edge lines;

[0089] S5, aligning the upper main airbag fabric piece 211 and the lower main airbag fabric piece 212, and sewing them along the circular edge line;

[0090] S6, fold the main airbag 21 into a layered structure, and fold the first support airbag 221 and the second support airbag 222 left and right (as shown in FIG. Fig. 20 ), and finally seal it on the steering wheel 1.

[0091] In this way, when the vehicle is in danger of collision, the gas generator 4 explodes, and the airflow first enters the main airbag 21 to inflate the main airbag 21, and then enters the first support airbag 221 and the second support airbag 222, so that the first support airbag 221 inflates and hooks the left side of the steering wheel 1, and the second support airbag 222 inflates and hooks the right side of the steering wheel 1, so as to stabilize the entire airbag 2 to protect the occupants.

[0092] An embodiment of the present application also provides a vehicle, which includes the airbag system described in any one of the above items and has the same technical effects as the above airbag system, which will not be repeated here.

[0093] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An airbag system, characterized in that: Comprising a steering wheel (1) and a safety airbag (2) mounted on the steering wheel (1); The steering wheel (1) comprises an outer rim (11), a central wheel disc (12) and spokes (13); the outer rim (11) has a notch (11a); one end of the spoke (13) is connected to the outer rim (11), and the other end of the spoke (13) is connected to the central wheel disc (12); The safety airbag (2) comprises a main airbag (21) and a support airbag (22), wherein the main airbag (21) and the support airbag (22) both have a folded state and an inflated state after expansion; A front side and a rear side are defined, the side facing the front windshield of the vehicle is the front side, and the side opposite to the front side is the rear side. In the inflated state, the support airbag (22) is supported on the front side of the steering wheel (1), and the main airbag (21) is supported on the rear side of the steering wheel (1).

2. The airbag system according to claim 1, characterized in that: The steering wheel (1) comprises two spokes (13), and the supporting air bag (22) is provided as one; Alternatively, the steering wheel (1) comprises three spokes (13), one of the spokes (13) being a lower spoke (131), and the lower spoke (131) being located below the steering wheel (1) and opposite to the notch (11a); and the airbag system comprises two support airbags (22), and in an inflated state, the two support airbags (22) are distributed on both sides of the lower spoke (131).

3. The airbag system according to claim 2, characterized in that: The steering wheel (1) comprises two spokes (13); the main air bag (21) has a first opening (21a) at its lower portion; the support air bag (22) has a second opening (22a) corresponding to the first opening (21a) at its upper portion; the main air bag (21) and the support air bag (22) are sewn together into a whole via the first opening (21a) and the second opening (22a); Alternatively, the steering wheel (1) comprises three spokes (13), the two support air bags (22) are respectively a first support air bag (221) and a second support air bag (222), the lower portion of the main air bag (21) has a third opening (21b) and a fourth opening (21c) which are independent of each other, the upper portion of the first support air bag (221) has a fifth opening (221a) corresponding to the third opening (21b), and the second support air bag (222) has a sixth opening (222a) corresponding to the fourth opening (21c); the main air bag (21) and the first support air bag (221) are sewn into a whole through the third opening (21b) and the fifth opening (221a), and the main air bag (21) and the second support air bag (222) are sewn into a whole through the fourth opening (21c) and the sixth opening (222a).

4. The airbag system according to claim 3, characterized in that: The supporting air bag (22) is arranged on a side away from the notch (11a); The steering wheel (1) comprises two spokes (13); in the inflated state, one side of the support air bag (22) is supported on the left side of the outer rim (11), and the other side is supported on the right side of the outer rim (11); Alternatively, the steering wheel (1) comprises three spokes (13), and the first supporting air bag (221) and the second supporting air bag (222) are respectively supported on the left side and the right side of the outer rim (11) in the inflated state.

5. The airbag system according to any one of claims 1 to 4, characterized in that: The main air bag (21) comprises an upper main air bag fabric sheet (211) and a lower main air bag fabric sheet (212) which are sewn together. And / or, the support air bag (22) comprises two pieces of upper support air bag cloth piece (223) and lower support air bag cloth piece (224) sewn to each other.

6. The airbag system according to claim 5, characterized in that: The upper main air bag fabric piece (211) and the lower main air bag fabric piece (212) are both circular fabric pieces.

7. The airbag system according to claim 5, characterized in that: The upper supporting air bag cloth piece (223) and the lower supporting air bag cloth piece (224) are both square cloth pieces.

8. The airbag system according to claim 5, characterized in that: The main air bag (21) can be folded into a layered structure in the folded state, and the support air bag (22) is folded below the main air bag (21); The steering wheel (1) comprises two spokes (13), and the left and right parts of the support air bag (22) are folded on the main air bag (21) respectively; Alternatively, the steering wheel (1) comprises three spokes (13), and the first supporting air bag (221) and the second supporting air bag (222) are respectively folded on the main air bag (21).

9. The airbag system according to any one of claims 1 to 4, characterized in that: The sewn portions of the main air bag (21) and the support air bag (22) form a communication channel (3) in the inflated state.

10. A vehicle, characterized in that: An airbag system comprising any one of claims 1-9.

Images