Airbag system, airbag control method, seat and vehicle

Abstract

The invention discloses an air bag system, an air bag control method, a seat and a vehicle, and relates to the technical field of vehicles. The first end of the first elastic belt is fixed to the first side of the seat, and a first locking piece is arranged at the second end of the first elastic belt; the first end of the second elastic belt is fixed to the second side of the seat, a second locking piece is arranged at the second end of the second elastic belt, and the first side is opposite to the second side; the first retractable part is arranged in the channel, and the first end of the first retractable part is connected with the second end of the first elastic band; the second retractable part is arranged in the channel, and the first end of the second retractable part is connected with the second end of the second elastic band; when the first retractable part and the second retractable part are pulled, the first elastic belt and the second elastic belt are driven to move oppositely until the first locking part and the second locking part are locked with each other.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, specifically relating to an airbag system, an airbag control method, a seat, and a vehicle. Background Technology

[0002] As automotive technology continues to develop, people have increasingly higher demands for vehicle safety and comfort. However, existing vehicle safety systems still have shortcomings in certain situations, especially when occupants are resting in non-standard positions (such as a reclining position), where these problems are particularly prominent.

[0003] In modern cars, with the widespread adoption of comfort features such as zero-gravity seats, it has become increasingly common for occupants to recline while driving or resting. However, in this posture, traditional airbag systems have significant shortcomings. The lack of effective integration between the airbag and occupant restraint devices makes occupants more susceptible to displacement due to inertia during a collision, increasing the risk of injury.

[0004] Therefore, there is an urgent need for an improved airbag system design to enhance the safety and protection of occupants in a reclining position. Summary of the Invention

[0005] This application aims to provide an airbag system, airbag control method, seat, and vehicle, which at least solves the problem that when the occupant is in a lying position, the insufficient restraint of traditional airbags causes the occupant to easily shift due to inertia during a collision.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows: In a first aspect, embodiments of this application propose an airbag system, the airbag system comprising: The airbag body has an internal channel; A first elastic band, the first end of which is fixed to the first side of the seat, and a first locking element is provided on the second end of the first elastic band; The second elastic band has a first end fixed to the second side of the seat, and a second locking element is provided on the second end of the second elastic band, with the first side and the second side facing each other. A first retractable member is disposed within the channel, and a first end of the first retractable member is connected to a second end of a first elastic band. The second retractable member is disposed in the channel, and the first end of the second retractable member is connected to the second end of the second elastic band. When the first retractable member and the second retractable member are subjected to tension, they drive the first elastic band and the second elastic band to move toward each other until the first locking member and the second locking member lock each other.

[0007] Optionally, the airbag system further includes: The first pretensioner is connected to the second end of the first retractable member; The second pretensioner is connected to the second end of the second retractable member; When the first pretensioner applies a tension in the first direction to the first retractable member, the first retractable member contracts in the first direction to drive the first elastic band to pass through the channel in the first direction until the first locking member locks to the second locking member. The first direction is the direction from the first side to the second side. When the second pretensioner applies a tension in the second direction to the second retractable member, the second retractable member contracts in the second direction to drive the second elastic band to pass through the channel in the second direction until the second locking member locks to the first locking member. The second direction is opposite to the first direction.

[0008] Optionally, the airbag system further includes: A first-stage gas generator is used to inflate a first volume of gas into the airbag body at a first inflation rate. The second-stage gas generator is used to replenish gas into the airbag body at a second inflation speed, so that the gas volume of the airbag body reaches a second gas volume, and the second inflation speed is greater than the first inflation speed.

[0009] Optionally, the first side of the seat has a first storage space for accommodating the first elastic band; A second storage space is provided on the second side of the seat to accommodate the second elastic band.

[0010] Optionally, the headrest, the backrest frame of the seat, or the sides of the seat cushion may have storage spaces for accommodating the airbag body.

[0011] Secondly, embodiments of this application propose an airbag control method, the method comprising: Determine whether a vehicle collision was avoidable; If it is determined that a vehicle collision is unavoidable, the first-stage gas generator is controlled to inflate the airbag body with a first volume of gas at a first inflation rate. When a vehicle collision occurs, the first pretensioner pulls the first retractable member and the second pretensioner pulls the second retractable member, thereby causing the first elastic band and the second elastic band to move towards each other until the first locking member and the second locking member lock each other.

[0012] Optionally, in the event of a vehicle collision, in addition to controlling the first pretensioner to pull the first retractable member and controlling the second pretensioner to pull the second retractable member, the method further includes: When a vehicle collision occurs, the second-stage gas generator is controlled to replenish gas into the airbag body at a second inflation rate, so that the gas volume of the airbag body reaches the second gas volume; the first inflation rate is less than the second inflation rate.

[0013] Optionally, determining whether a vehicle collision is avoidable includes: Acquire environmental information about the vehicle's surroundings from multiple sensors; Based on the environmental information, the probability of a vehicle collision and the estimated time of the collision are calculated. Based on the probability of a collision and the estimated time of the collision, it is determined whether the collision can be avoided.

[0014] Thirdly, embodiments of this application provide a seat, including a headrest, a backrest frame, a cover, and a seat cushion, and the seat also includes an airbag system as described in the first aspect.

[0015] Fourthly, embodiments of this application propose a vehicle comprising the airbag system described in the first aspect and the seat described in the third aspect.

[0016] In the embodiments of this application, a channel is provided on the airbag body, and a bidirectional retractable first retractable member and a second retractable member are inserted into the channel. When a vehicle collision occurs, the airbag is rapidly inflated and deployed, and a pulling force is applied to the first retractable member and the second retractable member, causing the first retractable member and the second retractable member to contract in the channel along the direction of the pulling force. This causes the first elastic band and the second elastic band to enter the channel and lock together with each other when they are close to each other through the first locking member and the second locking member.

[0017] This design, combining an airbag system with a locking mechanism, offers significant advantages in passive safety for occupants in a reclining position. When a collision occurs, the airbag inflates rapidly, providing necessary cushioning and support for the occupant. Simultaneously, the locking function of the elastic band ensures the occupant remains in a relatively fixed position during the collision, preventing significant displacement due to inertia and thus avoiding secondary collisions with rigid components within the vehicle. This design not only enhances the protective effect of the airbags but also strengthens the safety of occupants in a reclining position, providing more comprehensive and reliable passive safety protection.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a first airbag system provided in an embodiment of this application; Figure 2This is a diagram of a seat provided in one embodiment of this application; Figure 3 This is an overall diagram of an airbag system provided in one embodiment of this application; Figure 4 This is a schematic diagram of the structure of a second airbag system provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a third airbag system provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a fourth airbag system provided in an embodiment of this application; Figure 7 This is a flowchart illustrating an airbag control method provided in this application; Figure 8 This is a schematic diagram of the frame of an airbag control device according to an embodiment of this application.

[0020] Reference numerals: 1. Airbag body; 2. Channel; 3. First elastic band; 4. Second elastic band; 5. First locking element; 6. Second locking element; 7. First retractable element; 8. Second retractable element; 9. First pretensioner; 10. Second pretensioner; 11. First-stage gas generator; 12. Second gas generator. Detailed Implementation

[0021] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0023] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] The following is combined with Figures 1-8 This application describes an airbag system, an airbag control method, a seat, and a vehicle according to embodiments thereof.

[0026] Figure 1 This is a schematic diagram of the structure of a first airbag system provided in an embodiment of this application. Figure 2 This is a diagram of a seat provided in one embodiment of this application. Figure 3 This is a diagram showing the deployment effect of an airbag system provided in one embodiment of this application.

[0027] like Figure 1 As shown, one embodiment of this application provides an airbag system, the airbag system comprising: Airbag body 1, channel 2, first elastic band 3, second elastic band 4, first locking element 5, second locking element 6, first retractable element 7, second retractable element 8, this airbag system is used in Figure 2 The airbag system deployment effect on the seat shown is as follows: Figure 3 As shown.

[0028] The airbag body 1 has a channel 2 pre-sewn into key constraint areas (such as the chest, abdomen, and thighs). A first elastic band 3 has its first end fixed to a first side of the seat, and a first locking element 5 is provided on its second end. A second elastic band 4 has its first end fixed to a second side of the seat, and a second locking element 6 is provided on its second end. The first and second sides are opposite each other. A first retractable member 7 is disposed within the channel 2 of the airbag body 1, with its first end connected to the second end of the first elastic band 3. A second retractable member 8 is disposed within the channel 2, with its first end connected to the second end of the second elastic band 4. The first and second retractable members 7 and 8 can move within the channel 2 of the airbag body 1 along the direction of the applied tension.

[0029] Specifically, when the airbag system is not activated, the first retractable component 7 and the second retractable component 8 are in a relaxed state inside the channel 2, and the first elastic band 3 and the second elastic band 4 are folded and stored inside the seat, without contacting the occupant's body, thus ensuring comfort.

[0030] When a collision is confirmed, the second end of the first retractable member 7 (i.e. the other end of the first end of the first retractable member 7) and the second end of the second retractable member 8 (i.e. the other end of the first end of the second retractable member 8) will be subjected to opposite pulling forces. The first retractable member 7 will contract in the channel 2 of the airbag body 1 along the direction of the pulling force, so as to drive the first elastic band 3 to pass into the channel 2 of the airbag body 1 and move along the channel 2. Similarly, the second retractable member 8 will contract in the channel 2 of the airbag body 1 along the direction of the pulling force, so as to drive the second elastic band 4 to pass into the channel 2 of the airbag body 1 and move along the channel 2.

[0031] As the first elastic band 3 and the second elastic band 4 move toward each other along the channel 2, the first locking member 5 and the second locking member 6 will gradually approach each other within the channel 2. When they approach each other, the first locking member 5 and the second locking member 6 will lock each other.

[0032] The first locking member 5 and the second locking member 6 can be locked by means of snap-fit ​​or magnetic attraction.

[0033] By using the technical solution of the above embodiments, a channel is provided on the airbag body, and a bidirectional retractable first retractable member and a second retractable member are inserted into the channel. When a vehicle collision occurs, the airbag can be rapidly inflated and deployed. At the same time, a pulling force is applied to the first retractable member and the second retractable member, causing the first retractable member and the second retractable member to contract in the channel along the direction of the pulling force. This causes the first elastic band and the second elastic band to enter the channel and lock together with each other when they are close to each other through the first locking member and the second locking member.

[0034] This design, combining an airbag system with a locking mechanism, offers significant advantages in passive safety for occupants in a reclining position. When a collision occurs, the airbag inflates rapidly, providing necessary cushioning and support for the occupant. Simultaneously, the locking function of the elastic band ensures the occupant remains in a relatively fixed position during the collision, preventing significant displacement due to inertia and thus avoiding secondary collisions with rigid components within the vehicle. This design not only enhances the protective effect of the airbags but also strengthens the safety of occupants in a reclining position, providing more comprehensive and reliable passive safety protection.

[0035] This design, which combines airbag inflation with elastic band locking, dynamically enhances the restraint of the airbag system, enabling more effective management of collision energy, reducing peak deceleration of the occupant's body, and significantly lowering the risk of serious injury.

[0036] In conjunction with the technical solutions of the above embodiments, this application also provides another airbag system. Figure 4 This is a schematic diagram of the structure of a second airbag system provided in an embodiment of this application.

[0037] like Figure 4 As shown, in addition to the airbag body 1, channel 2, first elastic band 3, second elastic band 4, first locking member 5, second locking member 6, first retractable member 7, and second retractable member 8 described in the above embodiments, the airbag system also includes: a first pretensioner 9 and a second pretensioner 10.

[0038] The first pretensioner 9 is connected to the second end of the first retractable member 7, and the second pretensioner 10 is connected to the second end of the second retractable member 8.

[0039] The second end of the first retractable member 7 is movably connected to the first pretensioner 9. When the first pretensioner 9 applies a tension in the first direction to the first retractable member 7, the first retractable member 7 retracts along the first direction and is housed inside the first pretensioner 9, so that the first elastic band 3 passes into the channel 2 along the first direction until the first locking member 7 locks to the second locking member 8, and the first retractable member 7 stops retracting. The first direction is the direction from the first side to the second side. Similarly, the second end of the second retractable member 8 is movably connected to the second pretensioner 10. When the second pretensioner 10 applies a tension in the second direction to the second retractable member 8, the second retractable member 8 retracts along the second direction and is housed inside the second pretensioner 10, so that the second elastic band 4 passes into the channel 2 along the second direction until the second locking member locks to the first locking member, and the second retractable member 8 stops retracting. The second direction is opposite to the first direction.

[0040] In conjunction with the technical solutions of the above embodiments, this application also provides another airbag system. Figure 5This is a schematic diagram of the structure of a third airbag system provided in an embodiment of this application, with reference to... Figure 5 In addition to the airbag body 1, channel 2, first elastic band 3, second elastic band 4, first locking member 5, second locking member 6, first retractable member 7, and second retractable member 8 in the above embodiments, the airbag system also includes: a first-stage gas generator 11 and a second-stage gas generator 12.

[0041] The first-stage gas generator 11 and the second-stage gas generator 12 are cold-burning gas generators. The first-stage gas generator 11 is used to fill the airbag body 1 with a first volume of gas at a first inflation speed when a first inflation command is received. The second-stage gas generator 12 is used to supplement the airbag body 1 with gas at a second inflation speed when a second inflation command is received, so that the gas volume of the airbag body reaches a second gas volume, and the second inflation speed is greater than the first inflation speed.

[0042] In conjunction with the technical solutions of the above embodiments, this application also provides another airbag system. In addition to the airbag body 1, channel 2, first elastic band 3, second elastic band 4, first locking member 5, second locking member 6, first retractable member 7, and second retractable member 8 of the above embodiments, the airbag system has a first storage space on the first side of the seat for accommodating the first elastic band 3; and a second storage space on the second side of the seat for accommodating the second elastic band 4.

[0043] In conjunction with the technical solutions of the above embodiments, this application also provides another airbag system. In traditional automobiles, when occupants are resting and not wearing traditional seat belts, the protective effect of airbags is greatly reduced when occupants are in a reclining or other non-standard posture. For example, traditional front and side airbags may not effectively cover critical areas such as the occupant's chest and abdomen, resulting in these areas not being adequately protected during a collision. Furthermore, the deployment direction and force of the airbags may not be suitable for occupants in non-standard postures, and may even cause secondary injuries.

[0044] Based on this, in the airbag system provided in this embodiment, the airbag body 1 of the airbag system is housed in the headrest of the seat, inside the backrest frame of the seat, or in the storage space opened on both sides of the seat cushion.

[0045] The airbag body 1 is shaped like a one-piece "airbag suit." When not deployed, it is cleverly folded and stored inside the headrest, backrest frame, and side panels of the seat cushion. When the occupant is resting, the airbag body 1 is pulled out and covers the body. The coverage area of ​​the airbag body 1 includes: an upper body wrap extending from the shoulders (covering the chest, abdomen, and back), arm wraps, hip and thigh wraps, and calf and foot wraps. These parts are connected by multiple internal channels 2 to form a single unit that can inflate simultaneously.

[0046] Figure 6 This is a schematic diagram of the structure of a fourth airbag system provided in an embodiment of this application, with reference to... Figure 6 To further enhance the restraint force of the airbag body on the occupant, multiple locking devices, including a first elastic band 3, a second elastic band 4, a first locking element 5, a second locking element 6, a first retractable element 7, a second retractable element 8, a first pretensioner 9, and a second pretensioner 10, are installed in multiple channels of the airbag system. This improves the restraint force, prevents excessive displacement of the occupant in a lying position during a collision, and enhances the airbag system's ability to protect various parts of the occupant's body.

[0047] In this embodiment, the airbag body 1 of the airbag system can cover the entire body of the occupant below the head, forming a complete protection system. At the same time, the elastic band in the channel 2 is completely hidden under normal conditions and only intervenes at the moment of final collision, maximizing the occupant's comfort experience in zero gravity posture. It truly achieves the effect of providing the occupant with the highest level of safety and comfort when the occupant is in a reclining position and not wearing a seat belt.

[0048] In addition, the airbag system of this application also includes elastic webbing and guide rings built into the seat cover to ensure that the airbag body 1 can deploy along the correct path when the occupant pulls it out.

[0049] Figure 7 This is a flowchart illustrating an airbag control method provided in this application. (Refer to...) Figure 7 Considering the significant shortcomings of current automotive safety systems in handling occupants in a reclining position, particularly regarding airbag protection range and integration with active safety systems, these issues not only affect the quality of occupant rest but may also reduce occupant safety in a collision. Therefore, this application also provides an airbag control method, comprising steps S11 to S13: Step S11: Determine whether the vehicle collision is avoidable; Step S12: If it is determined that a vehicle collision is unavoidable, control the first-stage gas generator to inflate the airbag body with a first volume of gas at a first inflation rate. Step S13: When a vehicle collision occurs, control the first pretensioner to pull the first retractable member and control the second pretensioner to pull the second retractable member, so as to drive the first elastic band and the second elastic band to move towards each other until the first locking member and the second locking member lock each other.

[0050] In this embodiment, the airbag control method is applied to the airbag system. After the occupant pulls out the airbag body 1 and covers his body, the vehicle's central processing unit (ECU) obtains real-time environmental information of the environment in front of and around the vehicle, and uses a fusion algorithm to predict whether the vehicle may cause a collision and determine whether the collision can be avoided. If the collision is determined to be avoidable, the vehicle's automatic emergency braking system is activated to avoid the collision.

[0051] If a collision is determined to be unavoidable, a command is issued to control the first-stage gas generator 11 of the airbag system in the passive safety system to inflate a first volume of gas into the airbag body 1 at a first inflation rate. This process is performed before the vehicle collision occurs. By pre-inflating the airbag body 1 before the collision, the time required for the airbag body 1 to go from a completely uninflated state to full deployment during the collision is reduced, thereby protecting the occupants more promptly.

[0052] The first volume of gas is the first inflation speed, which can be calculated based on the estimated time of the collision and the current time, as well as the first gas volume, to ensure that the process of inflating the first volume of gas into the airbag body 1 is completed before the estimated time of the vehicle collision arrives.

[0053] Through the technical solution described in the above embodiments, this method of combining airbags with the locking mechanism of elastic bands has significant advantages in addressing passive safety issues related to occupants in a reclining position. When a collision is unavoidable, the airbag inflates and deploys, providing necessary cushioning and support for the occupants in advance. During the collision, the locking function of the elastic bands ensures that the occupants maintain a relatively fixed position during the collision, preventing large displacements due to inertia and thus avoiding secondary collisions between the occupants and rigid components inside the vehicle. This method improves the protective effect of the airbags and enhances the safety of occupants in a reclining position, providing more comprehensive and reliable passive safety protection.

[0054] In conjunction with the technical solutions of the above embodiments, this application also provides another airbag control method, in which the step S11 of "determining whether a vehicle collision is avoidable" includes steps S11-1 to S11-3: Step S11-1: Obtain environmental information about the vehicle's surroundings from multiple sensors. Step S11-2: Calculate the probability of a vehicle collision and the estimated time of the collision based on the environmental information; Step S11-3: Based on the probability of a vehicle collision and the estimated time of the collision, determine whether the vehicle collision is avoidable.

[0055] In this embodiment, the multiple sensors include at least vehicle-mounted millimeter-wave radar, cameras, and lidar. These sensors monitor the environment in front of and around the vehicle in real time to obtain environmental information. Each sensor then transmits this environmental information to the central processing unit (ECU), which uses a fusion algorithm to fuse the environmental information detected by each sensor to obtain comprehensive information about the vehicle's surrounding environment. The ECU analyzes this comprehensive information, such as calculating the relative speed, acceleration, motion state, and distance between the vehicle and surrounding vehicles or obstacles, and estimating the probability and estimated time of a collision. If the vehicle has sufficient braking distance or avoidance space to avoid a collision, the probability of a collision is considered low, and the ECU triggers active safety systems (such as automatic emergency braking and lane keeping assist) to avoid the collision.

[0056] For example, if a vehicle is traveling at 60 km / h and there is an obstacle 60 meters ahead, and the vehicle's braking deceleration is 5 m / s², then the estimated braking time is approximately 3.6 seconds, and the braking distance is approximately 28 meters, which is enough to stop the vehicle before a collision. Therefore, it is determined that the vehicle has sufficient braking distance to avoid a collision.

[0057] If a vehicle is traveling at 80 km / h and there is an obstacle 45 meters ahead, and the vehicle's braking deceleration is 5 m / s², the braking distance is approximately 50 meters (greater than 45 meters). This means that the collision cannot be directly avoided through automatic emergency braking. In this case, the ECU also needs to consider whether the vehicle can avoid the collision by changing lanes. If the time required for the vehicle to change lanes is approximately 2 seconds, the calculated avoidance space based on the vehicle's speed is approximately 40 meters (less than 45 meters). Therefore, the vehicle has sufficient avoidance space to avoid a collision.

[0058] However, if there is insufficient space or braking distance to allow the vehicle to take effective braking or evasive action within a limited time, then a collision is considered inevitable, and steps S12 and S13 need to be performed.

[0059] To further prevent excessive displacement of occupants within the airbag system, thus failing to effectively restrain them, it is also necessary to control the first pretensioner 9 in each channel 2 of the airbag system to pull the first retractable member 7 and control the second pretensioner 10 to pull the second retractable member 8 during a collision. The first retractable member 7 and the second retractable member 8 can be soft ropes, which drive the first elastic band 3 and the second elastic band 4 to move in opposite directions. The first elastic band 3 and the second elastic band 4 can be high-strength webbing.

[0060] During the opposing motion, the first retractable member 7 and the second retractable member 8 rapidly contract, thereby pulling the first elastic band 3 connected to the first retractable member 7 out of the first storage space and rapidly tensioning it, and pulling the second elastic band 4 connected to the second retractable member 8 out of the second storage space and rapidly tensioning it. When the first retractable member 7 and the second retractable member 8 meet, they are locked to each other by the first locking member 5 and the second locking member 6 to constrain and fix the airbag system. When the first elastic band 3 and the second elastic band 4 in the multiple channels 2 are locked by the locking members, the entire airbag system is tensioned by these elastic bands, like a "skeleton", which strengthens the overall structure and constraint of the airbag system and can more effectively prevent the occupant from excessive displacement within the airbag system.

[0061] In conjunction with the technical solutions of the above embodiments, this application also provides another airbag control method. In this method, when a vehicle collision occurs, in addition to controlling the first pretensioner 9 to pull the first retractable member 7 and controlling the second pretensioner 10 to pull the second retractable member 8, the method further includes: Step S21: When a vehicle collision occurs, the second-stage gas generator is controlled to replenish gas into the airbag body at a second inflation speed so that the gas volume of the airbag body reaches the second gas volume; the first inflation speed is less than the second inflation speed.

[0062] In this embodiment, a two-stage inflation method is adopted. The first-stage gas generator is used to pre-inflate the airbag body 1 with a first volume of gas at a first inflation speed according to the pre-inflation command of the ECU when it is confirmed that the collision is unavoidable, so that the airbag body 1 can be initially deployed and formed at a relatively gentle speed. The second-stage gas generator is used to rapidly replenish a large amount of gas into the airbag body 1 at a second inflation speed according to the main inflation command of the ECU at the moment the collision is confirmed to have occurred, until the gas volume of the airbag body reaches the second gas volume, so that the airbag reaches the design pressure and volume.

[0063] This dual-stage inflation protection strategy of "pre-inflation + main inflation" solves the inherent shortcomings of insufficient restraint of traditional flexible airbags by using pre-inflation to achieve early containment and active reinforcement before the moment of collision (main inflation and elastic band locking in the channel), providing restraint performance comparable to seat belts.

[0064] Figure 8 This is a schematic diagram of the frame of an airbag control device according to an embodiment of this application, with reference to... Figure 8 An embodiment of this application also provides an airbag control device, which includes: The judgment module 11 is used to determine whether a vehicle collision is avoidable; The first gas control module 12 is used to control the first-stage gas generator to inflate a first volume of gas into the airbag body at a first inflation rate when it is determined that a collision of the vehicle is unavoidable. The elastic band control module 13 is used to control the first pretensioner to pull the first retractable member and control the second pretensioner to pull the second retractable member when a vehicle collision occurs, so as to drive the first elastic band and the second elastic band to move towards each other until the first locking member and the second locking member lock each other.

[0065] Optionally, in the event of a vehicle collision, in addition to controlling the first pretensioner to pull the first retractable member and controlling the second pretensioner to pull the second retractable member, the device further includes: The first gas control module is used to control the second-stage gas generator to replenish gas into the airbag body at a second inflation speed when a vehicle collision occurs, so that the gas volume of the airbag body reaches the second gas volume; the first inflation speed is less than the second inflation speed.

[0066] Optionally, the determination module 11 specifically includes: An environmental information acquisition unit is used to acquire environmental information about the vehicle's surroundings from multiple sensors. The calculation unit is used to calculate the probability of a vehicle collision and the estimated time of the collision based on the environmental information. The judgment unit is used to determine whether a vehicle collision is avoidable based on the probability of the vehicle colliding and the estimated time of the collision.

[0067] In addition, this application also proposes a seat, which is a zero-gravity seat with multi-directional adjustment function, allowing the occupant to enter a comfortable reclining position. The seat includes a headrest, a backrest frame, a cover, and a seat cushion. The seat also includes an airbag system as described in the above embodiments.

[0068] In addition, this application also proposes a vehicle that includes the airbag system and the seat described in the above embodiments.

[0069] The airbag control device in this application embodiment can be a device, or it can be a component, integrated circuit, or chip in a terminal. The device can be a mobile electronic device or a non-mobile electronic device. For example, mobile electronic devices can be mobile phones, tablets, laptops, PDAs, in-vehicle electronic devices, wearable devices, ultra-mobile personal computers (UMPCs), netbooks, or personal digital assistants (PDAs), etc., while non-mobile electronic devices can be servers, network attached storage (NAS), personal computers (PCs), televisions (TVs), ATMs, or self-service machines, etc. This application embodiment does not impose specific limitations.

[0070] The airbag control device in this application embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit the specific operating system used.

[0071] The airbag control device provided in this application embodiment can achieve... Figure 7 The various processes implemented by the airbag control device in the illustrated method embodiment will not be described again here to avoid repetition.

[0072] In addition, this application embodiment also provides an electronic device. It should be noted that the electronic device in this application embodiment includes the mobile electronic device and non-mobile electronic device described above.

[0073] The electronic device includes, but is not limited to, components such as: radio frequency unit, network module, audio output unit, input unit, sensor, display unit, user input unit, interface unit, memory, and processor.

[0074] Those skilled in the art will understand that electronic devices may also include a power supply (such as a battery) that powers the various components. The power supply can be connected to the processor logic through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The structure of the electronic device does not constitute a limitation on the electronic device. Electronic devices may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements, which will not be elaborated further here. The electronic device 600 includes a memory 610 and a processor 620. The memory 610 and the processor 620 are connected via a bus. The memory 610 stores a computer program that can run on the processor 620 to implement the steps in the airbag control method disclosed in the above embodiments of this application.

[0075] As the apparatus is basically similar to the method embodiment, it is described in a relatively simple way. For relevant details, please refer to the description of the method embodiment.

[0076] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0077] Those skilled in the art will understand that embodiments of this application can be provided as methods, apparatus, or computer program products. Therefore, embodiments of this application can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects.

[0078] Furthermore, this application embodiment also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described airbag control method embodiment and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0079] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0080] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described airbag control method embodiments and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0081] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0082] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0083] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0084] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

[0085] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An airbag system, characterized in that, The airbag system includes: The airbag body has an internal channel; A first elastic band, the first end of which is fixed to the first side of the seat, and a first locking element is provided on the second end of the first elastic band; The second elastic band has a first end fixed to the second side of the seat, and a second locking element is provided on the second end of the second elastic band, with the first side and the second side facing each other. A first retractable member is disposed within the channel, and a first end of the first retractable member is connected to a second end of a first elastic band. The second retractable member is disposed in the channel, and the first end of the second retractable member is connected to the second end of the second elastic band. When the first retractable member and the second retractable member are subjected to tension, they drive the first elastic band and the second elastic band to move toward each other until the first locking member and the second locking member lock each other.

2. The airbag system according to claim 1, characterized in that, The airbag system also includes: The first pretensioner is connected to the second end of the first retractable member; The second pretensioner is connected to the second end of the second retractable member; When the first pretensioner applies a tension in the first direction to the first retractable member, the first retractable member contracts in the first direction to drive the first elastic band to pass through the channel in the first direction until the first locking member locks to the second locking member. The first direction is the direction from the first side to the second side. When the second pretensioner applies a tension in the second direction to the second retractable member, the second retractable member contracts in the second direction to drive the second elastic band to pass through the channel in the second direction until the second locking member locks to the first locking member. The second direction is opposite to the first direction.

3. The airbag system according to claim 1, characterized in that, The airbag system also includes: A first-stage gas generator is used to inflate a first volume of gas into the airbag body at a first inflation rate. The second-stage gas generator is used to replenish gas into the airbag body at a second inflation speed, so that the gas volume of the airbag body reaches a second gas volume, and the second inflation speed is greater than the first inflation speed.

4. The airbag system according to claim 1, characterized in that, The seat has a first storage space on its first side for accommodating the first elastic band; A second storage space is provided on the second side of the seat to accommodate the second elastic band.

5. The airbag system according to any one of claims 1-4, characterized in that, The headrest, the backrest frame of the seat, or the sides of the seat cushion of the seat have storage spaces for accommodating the airbag body.

6. An airbag control method, characterized in that, The method includes: Determine whether a vehicle collision was avoidable; If it is determined that a vehicle collision is unavoidable, the first-stage gas generator is controlled to inflate the airbag body with a first volume of gas at a first inflation rate. When a vehicle collision occurs, the first pretensioner pulls the first retractable member and the second pretensioner pulls the second retractable member, thereby causing the first elastic band and the second elastic band to move towards each other until the first locking member and the second locking member lock each other.

7. The airbag control method according to claim 6, characterized in that, In the event of a vehicle collision, in addition to controlling the first pretensioner to pull the first retractable member and controlling the second pretensioner to pull the second retractable member, the system also includes: When a vehicle collision occurs, the second-stage gas generator is controlled to replenish gas into the airbag body at a second inflation rate, so that the gas volume of the airbag body reaches the second gas volume; the first inflation rate is less than the second inflation rate.

8. The airbag control method according to claim 6 or 7, characterized in that, The determination of whether a vehicle collision is avoidable includes: Acquire environmental information about the vehicle's surroundings from multiple sensors; Based on the environmental information, the probability of a vehicle collision and the estimated time of the collision are calculated. Based on the probability of a collision and the estimated time of the collision, it is determined whether the collision can be avoided.

9. A seat, comprising a headrest, a backrest frame, a fabric cover, and a seat cushion, characterized in that, The seat also includes an airbag system as described in any one of claims 1-5.

10. A vehicle comprising an airbag system according to any one of claims 1-5 and a seat according to claim 9.

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