Automobile energy absorption device, automobile body frame and automobile

Abstract

This utility model discloses an automotive energy-absorbing device, a vehicle body frame, and a vehicle. The automotive energy-absorbing device is installed between a crash beam and a longitudinal beam, and includes a telescopic energy-absorbing box and a drive assembly. One end of the telescopic energy-absorbing box is connected to the crash beam, and the other end is connected to the drive assembly. The end of the drive assembly away from the telescopic energy-absorbing box is connected to the longitudinal beam. After receiving a collision risk signal, the drive assembly controls the length of the telescopic energy-absorbing box in the longitudinal beam direction. In this embodiment, when a collision between the vehicle and an obstacle is detected, the drive assembly controls the telescopic energy-absorbing box to lengthen in the longitudinal beam direction. When the obstacle collides with the vehicle, the obstacle first contacts the crash beam, causing the crash beam to deform. Then, the telescopic energy-absorbing box undergoes crush deformation. By increasing the deformation space of the vehicle when the obstacle collides with the vehicle, the risk of injury to the occupants during a high-speed collision is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle body structure, and in particular to an energy-absorbing device for automobiles, a vehicle body frame, and a vehicle. Background Technology

[0002] When a vehicle collides, it typically absorbs energy through the deformation of structures such as crash beams, energy-absorbing boxes, and longitudinal beams, thereby reducing the extent of damage to the vehicle. However, the collision speed and angle of a vehicle are highly variable, while the energy-absorbing space provided by crash beams, energy-absorbing boxes, and longitudinal beams is limited and cannot cope with different collision situations.

[0003] Currently, energy-absorbing boxes are typically connected to pneumatic systems, and collision sensors and relative velocity sensors are installed on the vehicle. When a collision occurs, the collision intensity and relative velocity are obtained, and the pressure relief valve of the pneumatic system is adjusted according to the collision intensity and relative velocity to regulate the compression reaction force and adapt to different collision situations. However, as the compression reaction force increases, the acceleration of the vehicle and occupants also increases, resulting in greater inertia for the occupants during the collision, which in turn increases the risk of injury to the occupants. Utility Model Content

[0004] This invention provides an energy-absorbing device for automobiles, which aims to at least solve the problem of the high risk of injury to automobile occupants in automobile collisions in the prior art.

[0005] In a first aspect, this utility model provides an automotive energy-absorbing device installed between a crash beam and a longitudinal beam, the automotive energy-absorbing device including a telescopic energy-absorbing box and a drive assembly;

[0006] One end of the telescopic energy-absorbing box is connected to the anti-collision beam, and the other end of the telescopic energy-absorbing box is connected to the drive assembly. The end of the drive assembly away from the telescopic energy-absorbing box is connected to the longitudinal beam. After receiving a collision risk signal, the drive assembly controls the length of the telescopic energy-absorbing box in the direction of the longitudinal beam.

[0007] Optionally, the telescopic energy-absorbing box includes at least two sub-energy-absorbing boxes that are slidably connected to each other. After receiving a collision risk signal, the drive assembly controls the telescopic movement of the sub-energy-absorbing boxes in the longitudinal beam direction to adjust the length of the sub-energy-absorbing boxes in the longitudinal beam direction.

[0008] Optionally, the vehicle energy absorption device further includes a detection element that detects the vehicle's status. The drive assembly includes an extender and a controller. One end of the extender is connected to the sub-energy absorption box, and the other end of the extender is connected to the longitudinal beam. The controller is connected to the extender and the detection element. When the controller determines that the vehicle has a collision risk based on the status, it controls the extender to adjust the degree of extension and retraction of the sub-energy absorption box in the longitudinal beam direction, thereby adjusting the length of the telescopic energy absorption box in the longitudinal beam direction.

[0009] Optionally, the extender includes an extender rod and a pusher. One end of the extender rod is connected to the end of the sub-energy-absorbing box near the longitudinal beam, and the other end of the extender rod is connected to the pusher. The pusher is mounted on the longitudinal beam and pushes the extender rod to slide in the direction of the longitudinal beam.

[0010] Optionally, the sub-energy-absorbing box is cylindrical, and when multiple sub-energy-absorbing boxes are in an extended state, the ends of the multiple sub-energy-absorbing boxes are sequentially snapped together;

[0011] One end of the extension rod is connected to the sub-energy-absorbing box located in the first inner layer, and the transverse cross-sectional dimension of the extension rod is smaller than the inner diameter of the sub-energy-absorbing box located in the second inner layer.

[0012] Optionally, the actuator includes a hydraulic cylinder, a hydraulic hose, and a hydraulic pump. One end of the hydraulic cylinder is connected to the extension rod, and the other end of the hydraulic cylinder is connected to the hydraulic hose. The end of the hydraulic hose away from the hydraulic cylinder is connected to the hydraulic pump. When the controller determines that the vehicle has a collision risk based on the state, it controls the start and stop of the hydraulic pump.

[0013] Optionally, the actuator further includes a pressure relief tank and a pressure relief valve. The pressure relief tank is connected to the hydraulic cylinder, and the pressure relief valve is installed between the hydraulic cylinder and the pressure relief tank. The controller can control the opening and closing of the pressure relief valve.

[0014] Optionally, it also includes an energy-absorbing box mounting plate, one side of which is connected to the drive assembly, and the other side of which is connected to the sub-energy-absorbing box located in the outer first layer.

[0015] Secondly, embodiments of the present invention provide a vehicle body frame, including a crash beam, longitudinal beams, and an automotive energy absorption device as described above, installed between the crash beam and the longitudinal beams.

[0016] Thirdly, this utility model embodiment provides a vehicle including the body frame described in the previous item.

[0017] In this embodiment of the invention, when a collision between the vehicle and an obstacle is detected, the drive assembly controls the length of the telescopic energy-absorbing box to change, making its dimension longer in the longitudinal beam direction. This causes the anti-collision beam to move away from the vehicle. When the obstacle collides with the vehicle, the obstacle first contacts the anti-collision beam, causing the anti-collision beam to deform. Then, the telescopic energy-absorbing box undergoes crush deformation under the action of the obstacle and the anti-collision beam, absorbing energy and reducing the impact force of the obstacle on the vehicle, thereby reducing the degree of damage to the vehicle. By controlling the length of the telescopic energy-absorbing box, the deformation space of the vehicle when the obstacle collides with the vehicle is increased, reducing the risk of injury to the occupants due to the large inertia during the collision when the vehicle and obstacle collide at high speeds.

[0018] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this utility model more obvious and easy to understand, the following are specific embodiments of this utility model. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of the automotive energy absorption device provided in this embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the automotive energy-absorbing device structure when the telescopic energy-absorbing box is in the extended state in this embodiment of the utility model.

[0022] Figure 3 This is a schematic diagram of the drive assembly structure when the telescopic energy-absorbing box is in the extended state in an embodiment of this utility model;

[0023] Figure 4 This is a schematic diagram of the drive component structure when the telescopic energy-absorbing box is in the shortened state in an embodiment of this utility model.

[0024] Figure label:

[0025] 1-Anti-collision beam; 2-Longitudinal beam; 3-Telescopic energy-absorbing box; 31-First energy-absorbing box; 32-Second energy-absorbing box; 33-Third energy-absorbing box; 4-Drive assembly; 41-Extender; 411-Extend rod; 412-Pusher; 4121-Hydraulic cylinder; 4122-Hydraulic oil pipe; 4123-Hydraulic pump; 4124-Pressure relief tank; 4125-Pressure relief valve; 42-Controller; 5-Energy-absorbing box mounting plate. Detailed Implementation

[0026] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0027] Currently, energy-absorbing boxes are typically connected to pneumatic systems, and collision sensors and relative velocity sensors are installed on the vehicle. When a collision occurs, the collision intensity and relative velocity are acquired. Based on these parameters, the pressure relief valve of the pneumatic system is adjusted to regulate the compression reaction force, adapting to different collision scenarios. However, as the compression reaction force increases, the acceleration of the vehicle and occupants also increases, resulting in greater inertia for the occupants during the collision, thus increasing the risk of injury. To address these issues, this invention provides an automotive energy-absorbing device.

[0028] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0029] A schematic diagram of the automotive energy absorption device provided in this embodiment of the utility model is shown below. Figure 1 As shown. The vehicle energy absorption device is installed between the anti-collision beam 1 and the longitudinal beam 2. The vehicle energy absorption device includes a telescopic energy absorption box 3 and a drive assembly 4.

[0030] One end of the telescopic energy-absorbing box 3 is connected to the anti-collision beam 1, and the other end of the telescopic energy-absorbing box 3 is connected to the drive component 4. The end of the drive component 4 away from the telescopic energy-absorbing box 3 is connected to the longitudinal beam 2. After receiving the collision risk signal, the drive component 4 controls the length of the telescopic energy-absorbing box 3 in the direction of the longitudinal beam 2.

[0031] After the length of the telescopic energy-absorbing box 3 is changed by the drive component 4, the end of the telescopic energy-absorbing box 3 away from the drive component 4 is connected to the anti-collision beam 1. Under the action of the telescopic energy-absorbing box 3, the anti-collision beam 1 extends out of the vehicle body, thereby increasing the overall length of the vehicle body. This increases the deformation space of the vehicle when it collides with an obstacle.

[0032] In this embodiment of the invention, when a collision between the vehicle and an obstacle is detected, the drive component 4 controls the length of the telescopic energy-absorbing box 3 to change, making its dimension longer in the direction of the longitudinal beam 2. This causes the anti-collision beam 1 to move away from the vehicle. When the obstacle collides with the vehicle, the obstacle first contacts the anti-collision beam 1, causing the anti-collision beam 1 to deform. Then, the telescopic energy-absorbing box 3 undergoes crush deformation under the action of the obstacle and the anti-collision beam 1, absorbing energy and reducing the impact force of the obstacle on the vehicle, thereby reducing the degree of damage to the vehicle. By controlling the length of the telescopic energy-absorbing box 3, the deformation space of the vehicle when the obstacle collides with the vehicle is increased, reducing the risk of injury to the occupants due to the large inertia during the collision when the vehicle and obstacle collide at high speeds.

[0033] The anti-collision beam 1 is an important component of the automotive passive safety system. Automobiles typically have a front anti-collision beam 1 and a rear anti-collision beam 1, which are located on the frame structure at the front and rear of the vehicle, respectively. They are used to absorb energy and disperse the impact force to the vehicle body structure during a collision, thereby protecting the vehicle structure, reducing maintenance costs, preventing deformation of the passenger compartment, and protecting the safety of the occupants.

[0034] The longitudinal beam 2 is divided into a front longitudinal beam 2 and a rear longitudinal beam 2. The front longitudinal beam 2 is located below the engine compartment of the vehicle, extending from the front bumper to the front of the passenger compartment. The rear longitudinal beam 2 is located below the trunk, extending from the bottom of the trunk to the rear of the vehicle. In a collision, the longitudinal beams 2 can absorb and disperse the impact force, protecting the safety of the occupants. In this embodiment, energy-absorbing devices are installed between the front bumper beam 1 and the front longitudinal beam 2, and between the rear bumper beam 1 and the rear longitudinal beam 2. This allows the vehicle to increase its deformation space when colliding with obstacles in front or behind by controlling the length of the telescopic energy-absorbing box 3, thereby reducing the risk of injury to the occupants during the collision.

[0035] refer to Figure 2 In some embodiments, the telescopic energy-absorbing box 3 includes at least two sub-energy-absorbing boxes that are slidably connected to each other. After receiving a collision risk signal, the drive component 4 controls the telescopic movement of the sub-energy-absorbing boxes in the direction of the longitudinal beam 2 to adjust the length of the sub-energy-absorbing boxes in the direction of the longitudinal beam 2.

[0036] In this embodiment of the utility model, three sub-energy-absorbing boxes are provided, which are arranged sequentially from the direction near the anti-collision beam 1 to the direction near the longitudinal beam 2 as the first energy-absorbing box 31, the second energy-absorbing box 32, and the third energy-absorbing box 33. The cross-sectional dimensions of the first energy-absorbing box 31, the second energy-absorbing box 32, and the third energy-absorbing box 33 decrease sequentially. The second energy-absorbing box 32 is located between the first energy-absorbing box 31 and the third energy-absorbing box 33. The end of the first energy-absorbing box 31 away from the longitudinal beam 2 is fixedly connected to the anti-collision beam 1, and the end of the third energy-absorbing box 33 away from the anti-collision beam 1 is connected to the drive assembly 4.

[0037] When the drive assembly 4 detects a collision risk, the drive assembly 4 drives the first energy-absorbing box 31 and the second energy-absorbing box 32 to slide away from the longitudinal beam 2. Then, the first energy-absorbing box 31 pushes the anti-collision beam 1 to extend outside the vehicle body, increasing the overall length of the vehicle body. This increases the deformation space of the vehicle body when it collides with an obstacle, allowing the telescopic energy-absorbing box 3 to absorb more collision energy, thereby reducing the impact force transmitted to the passenger compartment and reducing the risk of injury to the occupants in a collision.

[0038] refer to Figure 2 In some embodiments, the vehicle energy absorption device further includes a detection element that detects the vehicle's state. The drive assembly 4 includes an extender 41 and a controller 42. One end of the extender 41 is connected to the sub-energy absorption box, and the other end of the extender 41 is connected to the longitudinal beam 2. The controller 42 is connected to the extender 41 and the detection element. When the controller 42 determines that the vehicle has a collision risk based on the vehicle's state, it controls the extender 41 to adjust the degree of extension and retraction of the sub-energy absorption box in the direction of the longitudinal beam 2, so as to adjust the length of the telescopic energy absorption box 3 in the direction of the longitudinal beam 2.

[0039] In this embodiment of the invention, the detection component is a vehicle perception system composed of radar, cameras, etc. The vehicle perception system can detect obstacles such as cars, trees, guardrails, and concrete blocks. When an obstacle is detected, it detects the distance and relative speed between the vehicle and the obstacle. Based on the relative distance and relative speed, it determines whether the vehicle will collide with the object in front. Specifically, when the radar and cameras on the vehicle detect obstacles such as cars, trees, guardrails, and concrete blocks around the vehicle, it obtains the current vehicle speed and the distance between the obstacle and the vehicle. For example, if the vehicle perception system detects a water truck 30 meters ahead of the vehicle, and the vehicle speed is 100 km / h, the vehicle will need to travel at least 40 meters to stop. Therefore, there is a risk of collision between the vehicle and the water truck. In this case, the vehicle perception system will issue a collision risk signal. Furthermore, after the vehicle perception system issues a collision risk signal, it will activate the automatic emergency braking system, and the vehicle will begin to decelerate. Therefore, the collision speed between the vehicle and the object in front is often much lower than the initial relative speed. For example, when the vehicle perception system detects an obstacle, if the relative speed between the vehicle and the vehicle in front is 80 km / h, the collision speed between the vehicle and the vehicle in front will be less than 80 km / h due to the emergency braking system. It could be a medium-speed collision of 30 km / h or a low-speed collision of 10 km / h.

[0040] When the vehicle perception system determines that the vehicle has a collision risk, the controller 42 controls the start and stop of the extender 41, thereby adjusting the length of the telescopic energy-absorbing box 3 in the direction of the longitudinal beam 2.

[0041] When the vehicle perception system determines that the vehicle has a collision risk and the collision speed is less than 15 km / h, it is determined to be a low-speed collision. At this time, the controller 42 will trigger the extension 41 to work. The extension 41 controls the first energy-absorbing box 31 to extend out of the vehicle body. The length of the first energy-absorbing box 31 is 50mm to 150mm, which increases the overall length of the vehicle body to a certain extent, and thus increases the deformation space of the vehicle body when it collides with an obstacle.

[0042] When the vehicle perception system determines that the vehicle has a collision risk and the collision speed is between 15 km / h and 40 km / h, it is classified as a medium-speed collision. At this time, the controller 42 triggers the extender 41 to work. The extender 41 controls the first energy-absorbing box 31 and the second energy-absorbing box 32 to extend outside the vehicle body. The length of the second energy-absorbing box 32 is 100mm to 150mm. Therefore, under medium-speed collision, the total length of the extendable energy-absorbing box 3 extending outside the vehicle is 150mm to 300mm, thereby further increasing the overall length of the vehicle body, and further increasing the deformation space of the vehicle body when it collides with an obstacle.

[0043] When the vehicle perception system determines that the vehicle has a collision risk and the collision speed is greater than 40 km / h, it is determined to be a high-speed collision. At this time, the controller 42 triggers the extender 41 to work. The extender 41 controls the first energy-absorbing box 31, the second energy-absorbing box 32, and the third energy-absorbing box 33 to extend outside the vehicle body. The length of the third energy-absorbing box 33 is 100mm to 150mm. Therefore, under medium-speed collision, the total length of the extendable energy-absorbing box 3 extending outside the vehicle is 250mm to 450mm, thereby maximizing the overall length of the vehicle body and thus maximizing the deformation space of the vehicle body when it collides with the obstacle, so that the extendable energy-absorbing box 3 can absorb as much collision energy as possible.

[0044] Optionally, in some embodiments, the detection element can also be a radar sensor. A radar sensor detects the distance, speed, and angle of objects in front by emitting and receiving millimeter wave or laser signals, and monitors the relative speed and direction changes of the vehicle in real time. Compared with a camera, a radar sensor is not affected by adverse weather conditions such as light, rain, snow, and fog, and can work normally in these environments. A camera can capture rich color and texture information, and it is also less expensive and easier to integrate. In practical applications, those skilled in the art can select different detection elements or combine multiple detection elements according to specific needs. The type of detection element is not limited here.

[0045] refer to Figure 2 and Figure 3 In some embodiments, the extender 41 includes an extender 411 and a pusher 412. One end of the extender 411 is connected to the end of the sub-energy-absorbing box near the longitudinal beam 2, and the other end of the extender 411 is connected to the pusher 412. The pusher 412 is mounted on the longitudinal beam 2 and pushes the extender 411 to slide in the direction of the longitudinal beam 2.

[0046] When the controller 42 triggers the extension 41 to work, the pusher 412 is activated. The pusher 412 controls the extension rod 411 to slide in the direction of the longitudinal beam 2, thereby causing the extension rod 411 to push the sub-energy-absorbing box to move away from the longitudinal beam 2.

[0047] refer to Figure 2 and Figure 3 In some embodiments, the sub-energy-absorbing boxes are cylindrical, and when multiple sub-energy-absorbing boxes are in an extended state, their ends are sequentially snapped together. One end of the extension rod 411 is connected to the sub-energy-absorbing box located in the first inner layer, and the transverse cross-sectional dimension of the extension rod 411 is smaller than the inner diameter of the sub-energy-absorbing box located in the second inner layer.

[0048] In this embodiment of the invention, the first energy-absorbing box 31 near the longitudinal beam 2 and the second energy-absorbing box 32 away from the longitudinal beam 2 are provided with matching snap-fit ​​rings. Similarly, the second energy-absorbing box 32 near the longitudinal beam 2 and the third energy-absorbing box 33 away from the longitudinal beam 2 are also provided with matching snap-fit ​​rings. After the extension rod 411 pushes the first energy-absorbing box 31 a certain distance away from the longitudinal beam 2, the end of the first energy-absorbing box 31 near the longitudinal beam 2 engages with the end of the second energy-absorbing box 32 away from the longitudinal beam 2. At this time, the extension rod 411... Continue pushing the first energy-absorbing box 31 away from the longitudinal beam 2. The first energy-absorbing box 31 drives the second energy-absorbing box 32 to start moving. Similarly, after the extension rod 411 pushes the first energy-absorbing box 31 away from the longitudinal beam 2 to move a certain distance again, the end of the second energy-absorbing box 32 near the longitudinal beam 2 is engaged with the end of the third energy-absorbing box 33 away from the longitudinal beam 2. At this time, when the extension rod 411 continues to push the first energy-absorbing box 31 away from the longitudinal beam 2, the first energy-absorbing box 31 drives the third energy-absorbing box 33 to start moving.

[0049] Optionally, in some embodiments, the cross-sectional dimension of the sub-energy-absorbing box near the anti-collision beam 1 is smaller than the cross-sectional dimension away from the anti-collision beam 1, and the cross-sectional dimension of the first energy-absorbing box 31 near the longitudinal beam 2 is larger than the cross-sectional dimension of the second energy-absorbing box 32 away from the longitudinal beam 2, and the cross-sectional dimension of the second energy-absorbing box 32 near the longitudinal beam 2 is larger than the cross-sectional dimension of the third energy-absorbing box 33 away from the longitudinal beam 2. After the extension rod 411 pushes the first energy-absorbing box 31 to move a certain distance away from the longitudinal beam 2, since the cross-sectional dimension of the first energy-absorbing box 31 near the longitudinal beam 2 is larger than the cross-sectional dimension of the second energy-absorbing box 32 away from the longitudinal beam 2, the first energy-absorbing box 31 and the second energy-absorbing box 32... The two energy-absorbing boxes 32 are engaged. At this time, the extension rod 411 continues to push the first energy-absorbing box 31 to move away from the longitudinal beam 2. The first energy-absorbing box 31 drives the second energy-absorbing box 32 to start moving. Similarly, after the extension rod 411 pushes the first energy-absorbing box 31 to move away from the longitudinal beam 2 again to a certain distance, since the cross-sectional dimension of the second energy-absorbing box 32 at the end near the longitudinal beam 2 is larger than the cross-sectional dimension of the third energy-absorbing box 33 at the end away from the longitudinal beam 2, the second energy-absorbing box 32 and the third energy-absorbing box 33 are engaged. At this time, when the extension rod 411 continues to push the first energy-absorbing box 31 to move away from the longitudinal beam 2, the first energy-absorbing box 31 drives the third energy-absorbing box 33 to start moving.

[0050] refer to Figure 3 and Figure 4 In some embodiments, the actuator 412 includes a hydraulic cylinder 4121, a hydraulic hose 4122, and a hydraulic pump 4123. One end of the hydraulic cylinder 4121 is connected to the extension rod 411, and the other end of the hydraulic cylinder 4121 is connected to the hydraulic hose 4122. The end of the hydraulic hose 4122 away from the hydraulic cylinder 4121 is connected to the hydraulic pump 4123. When the controller 42 determines that the vehicle has a collision risk based on the vehicle status, it controls the start and stop of the hydraulic pump 4123.

[0051] When a collision risk is determined to be present in the vehicle, the controller 42 activates the hydraulic pump 4123. The hydraulic pump 4123 draws hydraulic oil from the oil tank and delivers it to the hydraulic cylinder 4121 through the hydraulic oil pipe 4122. After the hydraulic oil enters the hydraulic cylinder 4121, it pushes the extension rod 411 to slide in the direction of the longitudinal beam 2, thereby adjusting the length of the telescopic energy-absorbing box 3 in the direction of the longitudinal beam 2.

[0052] Optionally, in some embodiments, the actuator 412 includes a cylinder, an air pipe, an air tank, a solenoid valve, and an air compressor. One end of the cylinder is connected to the extension rod 411, and the other end of the cylinder is connected to the air pipe. The end of the air pipe away from the cylinder is connected to the air tank, which is connected to the air compressor. The solenoid valve is installed at one end of the air pipe. When the controller 42 determines that the vehicle has a collision risk based on the vehicle's condition, it controls the opening and closing of the solenoid valve. The air compressor compresses atmospheric air and stores it in the air tank. When the controller determines that the vehicle has a collision risk, it opens the solenoid valve, and compressed air enters the cylinder through the air pipe. The compressed air pushes the extension rod 411 to slide in the direction of the longitudinal beam 2, thereby adjusting the length of the telescopic energy-absorbing box 3 in the direction of the longitudinal beam 2.

[0053] refer to Figure 3 and Figure 4 In some embodiments, the actuator 412 further includes a pressure relief tank 4124 and a pressure relief valve 4125. The pressure relief tank 4124 is connected to the hydraulic cylinder 4121, and the pressure relief valve 4125 is installed between the hydraulic cylinder 4121 and the pressure relief tank 4124. The controller 42 can control the opening and closing of the pressure relief valve 4125.

[0054] When a collision occurs, the hydraulic pump 4123 operates. The first energy-absorbing box 31, after being compressed, cannot move due to the support of the extension rod 411; it can only be crushed and deformed to absorb energy. Once the first energy-absorbing box 31 is fully deformed, the second energy-absorbing box 32 begins to deform and absorb energy. However, because one end of the extension rod 411 is located near the anti-collision end of the second energy-absorbing box 32, it cannot deform. At this point, the second energy-absorbing box 32, after being compressed, drives the extension rod 411 away from the anti-collision beam. The movement in the direction of 1 causes the liquid pressure in the hydraulic cylinder 4121 to increase. When the pressure reaches a certain level, the controller 42 opens the pressure relief valve 4125. At this time, the hydraulic oil in the hydraulic cylinder 4121 is discharged into the pressure relief tank 4124. The liquid pressure in the hydraulic cylinder 4121 remains unchanged. The second energy-absorbing box 32 is crushed and deformed, and continues to push the extension rod 411 to move away from the anti-collision beam 1 until the first energy-absorbing box 31, the second energy-absorbing box 32, and the third energy-absorbing box 33 are all crushed and deformed.

[0055] refer to Figure 2 and Figure 4In some embodiments, the automotive energy absorption device further includes an energy absorption box mounting plate 5, one side of which is connected to the drive assembly 4, and the other side of which is connected to the sub-energy absorption box located in the outer first layer.

[0056] The energy-absorbing box 3 is fixed in a fixed position at the end away from the anti-collision beam 1 by means of the energy-absorbing box mounting plate 5.

[0057] refer to Figure 2 and Figure 4 In some embodiments, one end of the energy-absorbing box mounting plate 5 is connected to the hydraulic cylinder 4121, and a through hole is opened on the surface of the end of the energy-absorbing box mounting plate 5 near the sub-energy-absorbing box. The extension rod 411 passes through the through hole, so that the energy-absorbing box mounting plate 5 plays a guiding role for the extension rod 411.

[0058] Secondly, this utility model also discloses a vehicle body frame, which includes a crash beam 1, a longitudinal beam 2, and an energy-absorbing device installed between the crash beam 1 and the longitudinal beam 2. The energy-absorbing device includes a telescopic energy-absorbing box 3 and a drive assembly 4. One end of the telescopic energy-absorbing box 3 is connected to the crash beam 1, and the other end of the telescopic energy-absorbing box 3 is connected to the drive assembly 4. The end of the drive assembly 4 away from the telescopic energy-absorbing box 3 is connected to the longitudinal beam 2. After receiving a collision risk signal, the drive assembly 4 controls the length of the telescopic energy-absorbing box 3 in the direction of the longitudinal beam 2.

[0059] Since the vehicle body frame includes the aforementioned energy-absorbing device, it also possesses the beneficial effects of the aforementioned energy-absorbing device, which will not be elaborated here.

[0060] Thirdly, this utility model also discloses a vehicle, which includes a body frame. The body frame includes a crash beam 1, longitudinal beams 2, and an energy-absorbing device installed between the crash beam 1 and the longitudinal beams 2. The energy-absorbing device includes a telescopic energy-absorbing box 3 and a drive assembly 4. One end of the telescopic energy-absorbing box 3 is connected to the crash beam 1, and the other end of the telescopic energy-absorbing box 3 is connected to the drive assembly 4. The end of the drive assembly 4 away from the telescopic energy-absorbing box 3 is connected to the longitudinal beam 2. After receiving a collision risk signal, the drive assembly 4 controls the length of the telescopic energy-absorbing box 3 in the direction of the longitudinal beam 2.

[0061] Since the vehicle includes the aforementioned energy-absorbing device, it also possesses the beneficial effects of the aforementioned energy-absorbing device, which will not be elaborated here.

[0062] 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. Unless otherwise specified, 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.

[0063] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. In the description of this specification, the reference to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., means that the 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. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0064] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention 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 the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. An energy-absorbing device for automobiles, characterized in that, Installed between the anti-collision beam and the longitudinal beam, the automotive energy absorption device includes a telescopic energy absorption box, a drive assembly, and a detection component; One end of the telescopic energy-absorbing box is connected to the anti-collision beam, and the other end of the telescopic energy-absorbing box is connected to the drive assembly. The end of the drive assembly away from the telescopic energy-absorbing box is connected to the longitudinal beam. The detection element detects the state of the vehicle. After receiving the collision risk signal emitted by the detection element, the drive assembly controls the length of the telescopic energy-absorbing box in the longitudinal beam direction. The telescopic energy-absorbing box includes at least two sub-energy-absorbing boxes that are slidably connected to each other. After receiving a collision risk signal, the drive assembly controls the telescopic movement of the sub-energy-absorbing boxes in the longitudinal beam direction to adjust the length of the sub-energy-absorbing boxes in the longitudinal beam direction.

2. The automotive energy absorption device according to claim 1, characterized in that, The drive assembly includes an extender and a controller. One end of the extender is connected to the sub-energy-absorbing box, and the other end of the extender is connected to the longitudinal beam. The controller is connected to the extender and the detection element. When the controller determines that the vehicle has a collision risk based on the state, it controls the extender to adjust the degree of extension and retraction of the sub-energy-absorbing box in the longitudinal beam direction, so as to adjust the length of the telescopic energy-absorbing box in the longitudinal beam direction.

3. The automotive energy absorption device according to claim 2, characterized in that, The extender includes an extender rod and a pusher. One end of the extender rod is connected to the end of the sub-energy-absorbing box near the longitudinal beam, and the other end of the extender rod is connected to the pusher. The pusher is mounted on the longitudinal beam and pushes the extender rod to slide in the direction of the longitudinal beam.

4. The automotive energy absorption device according to claim 3, characterized in that, The sub-energy-absorbing box is cylindrical, and when multiple sub-energy-absorbing boxes are in an extended state, the ends of the multiple sub-energy-absorbing boxes are sequentially snapped together. One end of the extension rod is connected to the sub-energy-absorbing box located in the first inner layer, and the transverse cross-sectional dimension of the extension rod is smaller than the inner diameter of the sub-energy-absorbing box located in the second inner layer.

5. The automotive energy absorption device according to claim 4, characterized in that, The actuator includes a hydraulic cylinder, a hydraulic hose, and a hydraulic pump. One end of the hydraulic cylinder is connected to the extension rod, and the other end of the hydraulic cylinder is connected to the hydraulic hose. The end of the hydraulic hose away from the hydraulic cylinder is connected to the hydraulic pump. When the controller determines that the vehicle has a collision risk based on the state, it controls the start and stop of the hydraulic pump.

6. The automotive energy absorption device according to claim 5, characterized in that, The actuator also includes a pressure relief tank and a pressure relief valve. The pressure relief tank is connected to the hydraulic cylinder, and the pressure relief valve is installed between the hydraulic cylinder and the pressure relief tank. The controller can control the opening and closing of the pressure relief valve.

7. The automotive energy absorption device according to claim 6, characterized in that, It also includes an energy-absorbing box mounting plate, one side of which is connected to the drive assembly, and the other side of which is connected to the sub-energy-absorbing box located in the outer first layer.

8. A vehicle frame, characterized in that, The vehicle includes a crash beam, a longitudinal beam, and an energy-absorbing device for automobiles as described in any one of claims 1 to 7, which is installed between the crash beam and the longitudinal beam.

9. A vehicle, characterized in that, Including the vehicle frame as described in claim 8.

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