Vehicle safety device
By installing stacked telescopic airbags and sensor systems on vehicles, active collision protection, automatic righting after rollover, and buoyancy in water are achieved, solving the problem of insufficient passive protection in existing vehicles and improving vehicle safety and self-rescue capabilities.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 郑凯
- Filing Date
- 2026-04-08
- Publication Date
- 2026-05-15
AI Technical Summary
Existing vehicle safety technologies mainly rely on passive protection, which cannot actively protect the occupants and vehicle body before a collision, and cannot automatically right themselves after a collision, leading to the expansion of potential hazards, especially in cases where electric vehicle batteries collide and catch fire, doors are deformed and cannot be opened, or the vehicle rolls over and cannot save itself.
The vehicle employs stacked telescopic airbags installed in multiple locations on the vehicle body. Combined with distance sensors, speed sensors, and a control module, it detects the distance and speed between the vehicle body and objects, predicts collision risks, actively inflates for protection, automatically rights the vehicle when it rolls over, and provides buoyancy when it falls into water, thus achieving both active and passive protection for the vehicle.
It can actively absorb energy before a collision, provide cushioning during a collision, automatically right itself when overturned, and maintain balance when falling into water, thereby improving the safety of the vehicle and its occupants and reducing collision injuries and the risk of overturning.
Smart Images
Figure CN122034889A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vehicle safety technology, and more specifically to safety devices for active protection of vehicles. Background Technology
[0002] With the booming development of the automotive industry, its safety has received increasing attention. Vehicle driving safety is not only related to the life and property safety of drivers and passengers, but also directly affects road traffic order and public safety, and has become one of the core indicators of vehicle technology research and development and industrial upgrading. Traditional vehicle safety technology mainly focuses on passive safety, reducing the injury to occupants after a collision by optimizing the vehicle body structure and equipping it with seat belts, airbags, and other devices. However, with the continuous growth of vehicle ownership and the increasingly complex road traffic environment, relying solely on passive protection is no longer sufficient to meet the ever-increasing safety requirements of vehicles.
[0003] Current vehicle airbags deploy after a collision to protect occupants, but they cannot actively protect occupants or the vehicle body before a collision. If protection is only implemented after the collision, the damage may have already occurred, and the protection may be ineffective. Therefore, active protection mechanisms are needed in vehicles. Examples include battery deformation and fire in electric vehicles; doors or the vehicle body deforming and preventing occupants from opening them; and impact forces causing injury or death. Furthermore, current vehicles cannot automatically right themselves after a collision and rollover, requiring rescue. After a rollover, trapped occupants are in a highly dangerous situation, as the vehicle may catch fire or even explode at any time. Therefore, there is an urgent need for vehicles to automatically right themselves to facilitate escape. Summary of the Invention
[0004] The purpose of this invention is to solve the above-mentioned technical problems and provide a vehicle safety device.
[0005] To achieve the above objectives, the present invention employs the following technical solution: The vehicle safety device includes a vehicle body and multiple stacked telescopic airbags installed on the vehicle body. The vehicle body has multiple airbag mounting points, and the multiple stacked telescopic airbags are installed at corresponding airbag mounting points. The stacked telescopic airbags are inflated and extend to the outside of the vehicle body to protect the vehicle.
[0006] Furthermore, distance sensors are installed in six directions—front, rear, left, right, up, and down—of the vehicle body. These distance sensors are used to detect the distance between the vehicle body and objects. A speed sensor and a control module are installed inside the vehicle body. An inflation device is installed inside the vehicle body, and the inflation device is connected to a stacked telescopic airbag via an air tube to inflate the stacked telescopic airbag. The detection signals from the distance sensor and speed sensor are encoded and transmitted to the control module, which controls the inflation device to inflate the stacked telescopic airbag.
[0007] Furthermore, the stacked telescopic airbag includes a bag and a contraction spring located inside the bag. The spiral steel wire of the contraction spring is attached and fixed to the inner wall of the bag. An outer end plate is fixedly connected to the outer end of the bag facing the vehicle body, and an inner end plate is fixedly connected to the inner end of the bag facing the vehicle body. The inner end plate is fixed to the vehicle body. One end of the contraction spring is fixed to the outer end plate, and the other end of the contraction spring is fixed to the inner end plate. The contraction spring is in a contracted state in its natural state. After the bag is inflated, it extends against the elastic force of the contraction spring. An air pipe connector is connected to the inner end plate, and the air pipe connector is connected to the inflation device through an air pipe.
[0008] Furthermore, the diameter of the stacked telescopic airbag when fully extended is 10-12cm, the length of the stacked telescopic airbag after contraction is 6-8cm, and the length of the stacked telescopic airbag after full extension is 120-200cm.
[0009] On the other hand, this application provides a vehicle safety protection method, which uses the above-mentioned vehicle safety device to detect the distance between the vehicle body and an external object in the first corresponding direction through a distance sensor on the vehicle body. The method determines the different states of the vehicle body through the detection signals of different distance sensors, and controls the inflation or deflation of the stacked telescopic airbags according to the different states of the vehicle body, so that the stacked telescopic airbags in different positions perform matching protection operations on the vehicle body.
[0010] Furthermore, when the control module receives that the distance between the vehicle body and the object in the first corresponding direction is less than the first threshold, and the approach speed between the vehicle body and the object in the corresponding direction is greater than the preset speed, it determines that the object in the first corresponding direction will collide with the vehicle body. The control module controls the inflation device to inflate the stacked telescopic airbag in the first corresponding direction, so that the stacked telescopic airbag at the front of the vehicle body extends outward to perform active collision avoidance. The approach speed V1 is determined as follows: V1 = (L2 - L1) / t; Where L2 is the distance between the object in the first corresponding direction and the vehicle body as measured by the distance sensor in the first corresponding direction at the first moment, L1 is the distance between the object in the first corresponding direction and the vehicle body as measured by the distance sensor in the first corresponding direction after the time interval t at the first moment when L2 is detected, and t is the time interval between the distance sensor in the first corresponding direction detecting the object's distance from L2 and L1.
[0011] Furthermore, when the control module receives a distance sensor on one side of the vehicle body from an object that is less than a second threshold, and a bottom sensor detects a distance greater than a third threshold from the object, it determines that the vehicle body has rolled over. The control module controls the inflation of the stacked telescopic airbags at the upper edge of the door frame in the second corresponding direction of the vehicle body. The inflated telescopic airbags extend and lift the door frame of the vehicle body away from the ground, causing the upper side of the door frame of the vehicle body to rise upwards. Then, under the action of gravity, the vehicle body flips over and rights itself. The second corresponding direction is the side where the distance between the vehicle body and the object is less than the second threshold.
[0012] Furthermore, when the control module detects and determines that the vehicle body has rolled over, it controls all the stacked telescopic airbags on the vehicle body to inflate and extend, providing cushioning protection around the vehicle body.
[0013] Furthermore, when the control module receives a distance less than a fourth threshold between the top sensor of the vehicle body and an object in the opposite direction, and a distance greater than a third threshold between the bottom sensor and the object in the opposite direction, it determines that the vehicle body has overturned. It receives the distance to the object in the opposite direction detected by the side sensor of the vehicle body, determines the openness of both sides of the vehicle body, and selects the side with the longer lateral distance as the landing side for the righting operation. That is, the side with the open lateral distance is taken as the landing position of the vehicle body after righting. The control system controls the stacked telescopic airbags on the roof away from the landing side to inflate and extend, causing the top of the vehicle body to lift off the ground towards the landing side, thus causing the vehicle body to flip back to the overturned state. Then, the stacked telescopic airbags on the upper edge of the door frame on the side of the vehicle body in contact with the ground inflate and extend, causing the upper side of the door frame to lift upwards, flipping the vehicle body towards the righting landing side to the righted state.
[0014] Furthermore, after the vehicle body is uprighted, the control system controls the gas in the stacked telescopic airbag to be discharged, and the contraction spring in the stacked telescopic airbag rebounds, causing the stacked telescopic airbag to contract into the vehicle body.
[0015] Furthermore, the vehicle body is equipped with a water immersion sensor. When the control module receives a water immersion signal from the water immersion sensor, it determines that the vehicle body is in a state of being submerged in water. The control module sends a control signal to inflate and extend the stacked telescopic airbags at the front, rear, and side door sills of the vehicle body. The inflation of the stacked telescopic airbags provides buoyancy so that the vehicle body floats on the water surface. By controlling the amount of inflation of the stacked telescopic airbags at different positions at the front, rear, and sides of the vehicle body, the buoyancy in different directions is controlled to maintain the balance of the vehicle body.
[0016] The vehicle safety device provided by this invention has the following beneficial effects: by controlling the inflation of the stacked telescopic airbags, the airbags inflate and deploy before the vehicle collides with an object, absorbing the collision energy and achieving active collision protection for the vehicle, reducing the impact of the collision; and during the collision, the airbags inflate and deploy, absorbing part of the collision energy and achieving passive protection; simultaneously, controlling the inflation and deflation of the stacked telescopic airbags allows the vehicle to reset and save itself; when the vehicle falls into water, the inflation of the stacked telescopic airbags provides buoyancy, causing the vehicle to float, and controlling the expansion and contraction of different airbags helps the vehicle maintain balance in the water. Attached Figure Description
[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of the vehicle safety device provided by the present invention; Figure 2 A top view schematic diagram of the vehicle safety device provided by the present invention; Figure 3 This is a side view structural diagram of the vehicle safety device provided by the present invention; Figure 4 This is a partial structural diagram of the junction between the stacked telescopic airbag and the vehicle body in the vehicle safety device provided by the present invention. Figure 5 A schematic diagram of the stacked telescopic airbag in the extended state of the vehicle safety device provided by the present invention. Figure 6 This is a control schematic diagram of the control module in the vehicle safety device provided by the present invention; Figure 7 This is a schematic diagram of a vehicle rollover righting method provided by the present invention. Figure 8 This is a schematic diagram illustrating the overturning and righting process in a vehicle safety protection method provided by the present invention; Figure 9 This is a schematic diagram illustrating the protection method for vehicles in a water-falling state, as provided by the present invention.
[0018] The numbers in the diagram are as follows: 1. Vehicle body; 11. First airbag mounting point; 12. Second airbag mounting point; 13. Third airbag mounting point; 14. Fourth airbag mounting point; 15. Fifth airbag mounting point; 16. Sixth airbag mounting point; 2. Stacked telescopic airbag; 21. Airbag bag; 22. Contraction spring; 23. Outer end plate; 24. Inner end plate; 25. Air pipe connector. Detailed Implementation
[0019] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] It should be noted that in the embodiments of the present invention, all directional indications (such as up-down-left-right-forward-backward...) are only used to explain the relative positional relationship and movement between the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.
[0022] like Figures 1-6 As shown, the vehicle safety device includes a vehicle body 1 and multiple stacked telescopic airbags 2 mounted on the vehicle body 1. The stacked telescopic airbags 2 can be installed in the vehicle body 1 during vehicle production, or they can be installed in the vehicle body 1 after production is completed by modifying the vehicle body 1. A row of first airbag mounting points 11 is provided at the bottom door sills on both sides of the vehicle body 1, and a row of second airbag mounting points 12 is provided along the upper edge of the door frame of the vehicle body 1. Airbags are also provided along the sides of the roof of the vehicle body 1. The third airbag mounting point 13 and the fourth airbag mounting point 14 are provided. The fifth airbag mounting point 15 is provided at the front bumper of the vehicle body 1, and the sixth airbag mounting point 16 is provided at the rear bumper of the vehicle body 1. The first airbag mounting point 11, the second airbag mounting point 12, the third airbag mounting point 13, the fourth airbag mounting point 14, the fifth airbag mounting point 15 and the sixth airbag mounting point 16 are all equipped with stacked telescopic airbags 2. The stacked telescopic airbags 2 are inflated and extend to the outside of the vehicle body to protect the vehicle.
[0023] By employing the above technical solution, the stacked telescopic airbags 2 are inflated and deployed before the vehicle body 1 collides with an object, absorbing collision energy and achieving active collision safety protection. During the collision, they inflate and deploy, absorbing some of the collision energy and providing passive protection. Simultaneously, the stacked telescopic airbags 2 are inflated and retracted to enable vehicle self-rescue. When the vehicle falls into water, the stacked telescopic airbags 2 inflate to provide buoyancy, and the expansion and contraction of different airbags are controlled to achieve vehicle balance in the water. The stacked telescopic airbags 2 have a stacked structure, allowing them to extend and retract by controlling inflation. Furthermore, the multiple installation points of different stacked telescopic airbags 2 work together to facilitate control and adjustment of the vehicle's attitude.
[0024] Specifically, distance sensors are installed in six directions (front, rear, left, right, top, and bottom) of the vehicle body 1. These distance sensors are used to detect the distance between the vehicle body and objects. A speed sensor and a control module are installed inside the vehicle body 1. An inflation device is installed inside the vehicle body 1, and this device is connected to the stacked telescopic airbags 2 via air tubes to inflate the stacked telescopic airbags 2. The signals detected by the distance and speed sensors are encoded and transmitted to the control module, which controls the inflation device to inflate the stacked telescopic airbags 2. By detecting the distance information between the vehicle body 1 and surrounding objects through distance sensors in different directions, and analyzing this information in the control module, the relative state between the vehicle body 1 and surrounding objects can be determined. This allows for the determination of different states of the vehicle body 1, such as whether a collision is imminent, whether a collision has occurred, whether the vehicle body 1 has rolled over, or whether the vehicle body 1 has rolled backward. This allows for the control of inflating or retracting the stacked telescopic airbags 2 to control the protective actions of the vehicle body 1. The inflation or retraction of the stacked telescopic airbags 2 is controlled by the inflation device. Specifically, a distance sensor for measuring objects at the front end of the vehicle body 1 is provided, a distance sensor for measuring objects at the rear end of the vehicle body 1 is provided at the rear end of the vehicle body 1, a top distance sensor is provided at the top of the vehicle body 1, a bottom distance sensor is provided at the bottom of the vehicle body 1, and lateral distance sensors are provided on the left and right sides of the vehicle body 1. In order to improve the measurement accuracy, multiple distance sensors are provided in each direction of the vehicle body 1.
[0025] Specifically, the stacked telescopic airbag 2 includes a bag 21 and a contraction spring 22 located inside the bag 21. The spiral steel wire of the contraction spring 22 is attached to the inner wall of the bag 21. An outer end plate 23 is fixedly connected to the outer end of the bag 21 facing the vehicle body 1, and an inner end plate 24 is fixedly connected to the inner end of the bag 21 facing the vehicle body 1. The inner end plate 24 is fixed to the vehicle body 1. One end of the contraction spring 22 is fixed to the outer end plate 23, and the other end of the contraction spring 22 is fixed to the inner end plate 24. The contraction spring 22 is in a contracted state in its natural state. After the bag 21 is inflated, it extends against the elastic force of the contraction spring 22. An air pipe connector 25 is connected to the inner end plate 24, and the air pipe connector 25 is connected to the inflation device through an air pipe. The stacked telescopic airbag 2 uses a contraction spring 22 to provide contraction force, allowing it to remain retracted after the internal gas is expelled, facilitating its storage in the vehicle body 1. Inflation overcomes the contraction spring 22's force, extending the airbag for protection or support. The internal contraction spring 22 provides both contraction force and support for the airbag 21, maintaining its structural stability. The stacked telescopic airbag 2, through the combined action of the spiral contraction spring 22 and the airbag 21, forms a spiral, retractable, and foldable airbag structure. This allows it to automatically retract and reset after inflation, achieving reuse and avoiding the cumbersome process of replacing a single-use airbag with a new one. Specifically, the air pipe connected to the air pipe connector 25 is equipped with a solenoid valve to control the flow of the air, facilitating inflation of different airbags 21.
[0026] Preferred, such as Figure 4 and Figure 5 As shown, the stacked telescopic airbag 2 has a diameter D of 10-12 cm when fully extended, where D is the radial dimension of the stacked telescopic airbag 2. The retracted length of the stacked telescopic airbag 2 is 6-8 cm, and the fully extended length H is 120-200 cm, where H is the dimension of the outer contour of the stacked telescopic airbag 2 in the telescopic direction. The diameter D and length H are perpendicular to each other. Using a smaller diameter and retracted length facilitates arrangement and installation. It should be noted that those skilled in the art can adapt the size of the stacked telescopic airbag 2 to different vehicle models.
[0027] In one embodiment, this application provides a vehicle safety protection method, employing the aforementioned vehicle safety device. Distance sensors on the vehicle body 1 in a first corresponding direction detect the distance between the vehicle body 1 and external objects in that first corresponding direction. For example, a distance sensor at the front of the vehicle body 1 detects the distance between the vehicle body 1 and objects in front, a distance sensor at the rear of the vehicle body 1 detects the distance between the vehicle body 1 and objects behind, a distance sensor at the top of the vehicle body 1 detects the distance between the vehicle body 1 and objects at the top, a distance sensor at the bottom of the vehicle body 1 detects the distance between the vehicle body 1 and objects under the vehicle, and distance sensors on the left and right sides of the vehicle body 1 detect the distance between the vehicle body 1 and objects on either side. The detection signals from different distance sensors determine the different states of the vehicle body 1. Based on the different states of the vehicle body 1, the method controls the inflation or deflation of the stacked telescopic airbags 2, so that the stacked telescopic airbags 2 at different positions provide matched protection for the vehicle body 1.
[0028] Specifically, when the control module receives that the distance between the vehicle body 1 and the object in the first corresponding direction is less than the first threshold, and the approach speed of the vehicle body 1 and the object in the corresponding direction is greater than the preset speed, it determines that the object in the first corresponding direction will have a risk of collision with the vehicle body 1. The control module controls the inflation device to inflate the stacked telescopic airbag 2 in the first corresponding direction, so that the stacked telescopic airbag 2 at the front end of the vehicle body 1 extends outward to perform active collision avoidance. The approach speed V1 is determined as follows: V1 = (L2 - L1) / t; Where L2 is the distance between the object in the first corresponding direction and the vehicle body 1 measured by the distance sensor in the first corresponding direction at the first moment, L1 is the distance between the object in the first corresponding direction and the vehicle body 1 measured by the distance sensor in the first corresponding direction after the time interval t at the first moment of L2 detection, and t is the time interval between the distance of the object detected by the distance sensor in the first corresponding direction and L2 and L1. By judging the collision state of the vehicle body 1, the stacked telescopic airbag 2 is inflated before the collision occurs to provide active anti-collision protection for the vehicle body 1 and improve the active safety performance of the vehicle; if there is an object approaching in front of the vehicle body 1 and there is a risk of collision, the stacked telescopic airbag 2 in the fifth airbag installation point 15 is inflated to protect the front end of the vehicle body 1; when there is an object approaching behind the vehicle body 1 and there is a risk of collision, the stacked telescopic airbag 2 in the sixth airbag installation point 16 is inflated to protect the rear end of the vehicle body 1.
[0029] Specifically, when the control module receives a distance sensor on one side of the vehicle body 1 that is less than a second threshold and a bottom sensor that detects a distance greater than a third threshold, it determines that the vehicle body 1 has overturned. like Figure 7As shown, the control module inflates the stacked telescopic airbags 2 located on the upper edge of the door frame in the second corresponding direction of the vehicle body 1. The inflated airbags 2 extend and lift the door frame of the vehicle body 1 away from the ground, causing the upper side of the door frame to rise upwards. Then, under the influence of gravity, the vehicle body 1 flips over and rights itself. The second corresponding direction refers to the side where the distance between the vehicle body 1 and the object is less than a second threshold. The rollover state of the vehicle body 1 is determined by the detection information from the distance sensor, and the module controls the inflating of the stacked telescopic airbags 2 on the side corresponding to the third airbag mounting point 13 or the fourth airbag mounting point 14 of the vehicle body 1. The inflated airbags 2 extend and lift one side of the vehicle body 1 upwards, causing the vehicle body 1 to rotate and right itself.
[0030] Specifically, when the control module detects and determines that the vehicle body 1 has rolled over, it controls all the stacked telescopic airbags 2 on the vehicle body 1 to inflate and extend, providing cushioning protection around the vehicle body 1. When the vehicle rolls over, the stacked telescopic airbags 2 inflate and extend, so that the stacked telescopic airbags 2 surround the vehicle body 1. During the rollover, the vehicle body 1 is cushioned and protected by the stacked telescopic airbags 2, improving the safety of the vehicle and its occupants.
[0031] Specifically, such as Figure 8 As shown, when the control module receives a distance less than the fourth threshold between the top sensor of vehicle body 1 and the object in the opposite direction, and a distance greater than the third threshold detected by the bottom sensor, it determines that vehicle body 1 has overturned; it receives the distance of the object in the opposite direction detected by the side sensor of vehicle body 1, determines the openness of both sides of vehicle body 1, and selects the side with the longer lateral distance of vehicle body 1 as the landing side for the righting operation, that is, the side of vehicle body 1 with the open lateral distance is taken as the landing position of vehicle body 1 after righting. The control system controls the stacked telescopic airbag 2 on the roof away from the landing side to inflate and extend, so that the top of vehicle body 1 is lifted off the ground towards the landing side, thereby causing vehicle body 1 to rotate 90° to the side-overturned state; then the stacked telescopic airbag 2 on the upper edge of the door frame on the side of vehicle body 1 in contact with the ground inflates and extends, so that the upper side of the door frame of vehicle body 1 is lifted upward, and vehicle body 1 is rotated towards the righting landing side to the righting state. The system determines the overturned state of vehicle body 1 based on the detection information from the distance sensor, and controls the inflation of the stacked telescopic airbag 2 at the third airbag mounting point 13 or the fourth airbag mounting point 14 at the top. The inflated telescopic airbag 2 extends and lifts vehicle body 1 to the side, causing vehicle body 1 to flip back to the overturned state. Then, the system controls the inflation of the lateral stacked telescopic airbag 2 to lift and flip vehicle body 1, causing vehicle body 1 to continuously rotate back to the upright state.
[0032] Specifically, after the vehicle body 1 is uprighted, the control system controls the gas in the stacked telescopic airbag 2 to be released, and the contraction spring 22 in the stacked telescopic airbag 2 rebounds, causing the stacked telescopic airbag 2 to contract into the vehicle body 1. After use, the stacked telescopic airbag 2 contracts into the vehicle body 1, thus allowing the stacked telescopic airbag 2 to be used repeatedly.
[0033] Specifically, such as Figure 9 As shown, a water immersion sensor is installed on the vehicle body 1. When the control module receives a water immersion signal from the sensor, it determines that the vehicle body 1 is in a submerged state. The control module then sends a control signal to inflate and extend the stacked telescopic airbags 2 at the front, rear, and side door sills of the vehicle body 1. The inflation of the stacked telescopic airbags 2 provides buoyancy, allowing the vehicle body 1 to float on the water surface. By controlling the inflation amount of the stacked telescopic airbags 2 at different positions on the front, rear, and sides of the vehicle body 1, the buoyancy in different directions is controlled to maintain the balance of the vehicle body 1. By determining that the vehicle body 1 is in a submerged state, the control module controls the inflation device to inflate the stacked telescopic airbags 2 at the first airbag mounting point 11, the fifth airbag mounting point 15, and the sixth airbag mounting point 16 to provide buoyancy, preventing the vehicle from sinking and providing more rescue time for people trapped inside the vehicle. At the same time, it controls the expansion and contraction of the stacked telescopic airbags 2 at the left, right, front, and rear to maintain the vehicle's balance in the water and prevent the vehicle from capsizing.
[0034] The parts not covered in this technical solution can be implemented using existing technologies.
[0035] The foregoing has shown and described the basic principles, main features, and characteristics of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention includes the appended claims and their equivalents.
Claims
1. A vehicle safety device, characterized in that: The vehicle includes a vehicle body (1) and multiple stacked telescopic airbags (2) installed on the vehicle body (1). Multiple airbag mounting points are provided on the vehicle body (1), and multiple stacked telescopic airbags (2) are installed at corresponding airbag mounting points. The stacked telescopic airbags (2) are inflated and extend to the outside of the vehicle body (1) to protect the vehicle.
2. The vehicle safety device according to claim 1, characterized in that: Distance sensors are provided in the front, rear, left, right, up, and down directions of the vehicle body (1). The distance sensors are used to detect the distance between the vehicle body and objects. A speed sensor and a control module are provided inside the vehicle body (1). An inflation device is provided inside the vehicle body (1). The inflation device is connected to the stacked telescopic airbag (2) through an air pipe to inflate the stacked telescopic airbag (2). The detection signals from the distance sensor and the speed sensor are encoded and transmitted to the control module. The control module controls the inflation device to inflate the stacked telescopic airbag (2).
3. The vehicle safety device according to claim 2, characterized in that: The stacked telescopic airbag (2) includes a bag (21) and a contraction spring (22) located inside the bag (21). The spiral steel wire of the contraction spring (22) is attached to the inner wall of the bag (21). An outer end plate (23) is fixedly connected to the outer side of the bag (21) facing the vehicle body (1), and an inner end plate (24) is fixedly connected to the inner side of the bag (21) facing the vehicle body (1). The inner end plate (24) is fixed to the vehicle body (1). One end of the contraction spring (22) is fixed to the outer end plate (23), and the other end of the contraction spring (22) is fixed to the inner end plate (24). The contraction spring (22) is in a contracted state in its natural state. After the bag (21) is inflated, it extends against the elastic force of the contraction spring (22). An air pipe connector (25) is connected to the inner end plate (24), and the air pipe connector (25) is connected to the inflation device through an air pipe.
4. The vehicle safety device according to claim 3, characterized in that: The diameter of the stacked telescopic airbag (2) when fully extended is 10-12cm, the length of the stacked telescopic airbag (2) after contraction is 6-8cm, and the length of the stacked telescopic airbag (2) after fully extended is 120-200cm.
5. A vehicle safety protection method, employing the vehicle safety device as described in claim 3, characterized in that: The distance between the vehicle body (1) and the external object in the first corresponding direction is detected by the distance sensor on the vehicle body (1). The vehicle body (1) is in different states by the detection signals of different distance sensors. The stacked telescopic airbags (2) are inflated or deflated according to the different states of the vehicle body (1), so that the stacked telescopic airbags (2) in different positions perform matching protection operations on the vehicle body (1).
6. A vehicle safety protection method according to claim 2, characterized in that: When the control module receives that the distance between the vehicle body (1) and the object in the first corresponding direction is less than the first threshold, and the approach speed of the vehicle body (1) and the object in the corresponding direction is greater than the preset speed, it determines that the object in the first corresponding direction will have a collision risk with the vehicle body (1). The control module controls the inflation device to inflate the stacked telescopic airbag (2) in the first corresponding direction, so that the stacked telescopic airbag (2) at the front end of the vehicle body (1) extends outward to perform active collision avoidance. The approach speed V1 is determined as follows: V1 = (L2 - L1) / t; Where L2 is the distance between the object in the first corresponding direction and the vehicle body (1) measured by the distance sensor in the first corresponding direction at the first moment, L1 is the distance between the object in the first corresponding direction and the vehicle body (1) measured by the distance sensor in the first corresponding direction after the time interval t at the first moment when L2 is detected, and t is the time interval between the distance sensor in the first corresponding direction detecting the object's distance from L2 and L1.
7. A vehicle safety protection method according to claim 5, characterized in that: When the control module receives a distance sensor on one side of the vehicle body (1) that is less than the second threshold and the bottom sensor detects that the distance between the sensor and the object is greater than the third threshold, it determines that the vehicle body (1) has overturned. The control module controls the inflation of the stacked telescopic airbag (2) at the upper edge of the door frame in the second corresponding direction of the vehicle body (1). The stacked telescopic airbag (2) inflates and extends to lift the door frame of the vehicle body (1) away from the ground, so that the upper side of the door frame of the vehicle body (1) is lifted up. Then, under the action of gravity, the vehicle body (1) flips and straightens. The second corresponding direction is the side where the distance between the vehicle body (1) and the object is less than the second threshold.
8. A vehicle safety protection method according to claim 7, characterized in that: When the control module detects and determines that the vehicle body (1) has rolled over, it controls all the stacked telescopic airbags (2) of the vehicle body (1) to inflate and extend, providing buffer protection around the vehicle body (1).
9. A vehicle safety protection method according to claim 7, characterized in that: When the control module receives a distance less than the fourth threshold between the top sensor of the vehicle body (1) and the relative object, and a distance greater than the third threshold detected by the bottom sensor, it determines that the vehicle body (1) has overturned; it receives the distance of the relative object detected by the side sensor of the vehicle body (1), determines the openness of both sides of the vehicle body (1), and selects the side with the longer lateral distance of the vehicle body (1) as the landing side for the righting operation, that is, the side of the vehicle body (1) with the open lateral distance is taken as the landing position of the vehicle body (1) after righting, and the control system controls the stacked telescopic air on the roof away from the landing side. The airbag (2) inflates and extends, causing the top of the vehicle body (1) to lift off the ground towards the landing side, thereby causing the vehicle body (1) to flip back to the side-flipped state; then the stacked telescopic airbag (2) on the upper edge of the door frame on the side of the vehicle body (1) in contact with the ground inflates and extends, causing the upper side of the door frame of the vehicle body (1) to lift upward, turning the vehicle body (1) towards the landing side to the upright state; after the vehicle body (1) is uprighted, the control system controls the gas in the stacked telescopic airbag (2) to be discharged, and the contraction spring (22) in the stacked telescopic airbag (2) rebounds, causing the stacked telescopic airbag (2) to contract into the vehicle body (1).
10. A vehicle safety protection method according to claim 5, characterized in that: A water immersion sensor is installed on the vehicle body (1). When the control module receives a water immersion signal from the water immersion sensor, it determines that the vehicle body (1) is in a state of being submerged in water. The control module sends a control signal to control the stacked telescopic airbags (2) at the front, rear and side door sills of the vehicle body (1) to inflate and extend. The inflated stacked telescopic airbags (2) provide buoyancy so that the vehicle body (1) floats on the water surface. The buoyancy in different directions is controlled by controlling the amount of inflation of the stacked telescopic airbags (2) at different positions on the front, rear and sides of the vehicle body (1), so as to keep the vehicle body (1) in balance.