Vehicle collision protection structure and vehicle body

Abstract

The application relates to the automobile technical field and provides a vehicle collision protection structure and a vehicle body, which are used for solving the problem of collision damage when a vehicle collides with other objects head-on. The vehicle collision protection structure comprises a vehicle front collision cross beam, a vehicle front bumper, a guide support and a safety airbag. The vehicle front collision cross beam is connected with the safety airbag through the guide support, the vehicle front collision cross beam is welded with the guide support through a vehicle support, and the safety airbag is ignited from the position between the vehicle front bumper and the guide support in response to a radar signal of the vehicle radar device.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and in particular to a vehicle collision protection structure and a vehicle body. Background Technology

[0002] With the development of automotive technology, vehicles are being used more and more widely in people's daily lives. As one of the main components of passive safety systems, airbags have also received widespread attention. Airbags are mainly used to protect the driver's safety when a vehicle is involved in a frontal collision.

[0003] Currently, in order to reduce the risk of frontal collisions, in addition to installing airbags inside vehicles, the width and length of the vehicle collision beam have been increased. The vehicle collision beam is installed inside the vehicle bumper, which is a safety device used to absorb and mitigate external impact forces and protect the front and rear of the vehicle. The vehicle collision beam is a safety device used to absorb collision energy when the vehicle is involved in a collision. When a vehicle collides with other objects, by increasing the area of ​​the vehicle collision beam, the vehicle can absorb more collision energy, thereby reducing the damage to the vehicle during the collision. However, the vehicle collision beam is made of metal. Increasing the area of ​​the vehicle collision beam will significantly increase the weight of the vehicle collision beam, which will not achieve the goal of vehicle lightweighting.

[0004] Therefore, while maintaining the vehicle's lightweight design, how to reduce the risk of a frontal collision has become a problem that needs to be solved. Summary of the Invention

[0005] This application provides a vehicle collision protection structure and a vehicle body, which can trigger the airbags in the passive safety protection system in advance while maintaining the vehicle's lightweight design, thereby reducing the risk of the vehicle during a collision.

[0006] In a first aspect, this application provides a vehicle collision protection structure, the vehicle protection structure comprising: a vehicle front collision beam, a vehicle front bumper, a guide bracket, and an airbag, the vehicle front collision beam and the airbag being connected via the guide bracket, the vehicle front collision beam and the guide bracket being welded together via a vehicle bracket, and the airbag being deployed from a position between the vehicle front bumper and the guide bracket in response to a radar signal from the vehicle radar device.

[0007] In one possible design, an initiation position device is provided between the vehicle's front bumper and the airbag, wherein the initiation position device is used to determine the preset initiation position of the airbag.

[0008] In one possible design, the airbag is folded in a roll-up manner and secured by multiple airbag mounting brackets, each of which is fixed to a generator mounting plate.

[0009] In one possible design, the generator includes a clamp, a generator mounting plate, a positioning pin, and a fixing bolt. The clamp secures the generator to the generator mounting plate, and the fixing bolt and the positioning pin secure the generator mounting plate to the guide bracket.

[0010] In one possible design, the airbag fixing bracket includes a positioning plate, a fixing plate, a flat washer, a spring washer, and a screw. The positioning plate is fixed between the fixing plate and the flat washer, such that the flat washer and the spring washer are between the screw and the positioning plate, preventing the screw from coming loose.

[0011] In one possible design, the vehicle's front collision beam has two recessed structures, which allow the front collision beam structure to buffer and absorb impact force through deformation when subjected to a collision.

[0012] In one possible design, the guide bracket is an obtuse-angle bracket, and the generator mounting plate is installed at the obtuse-angle recess of the guide bracket, so that the vehicle can deploy the airbag at the preset detonation position via the generator before the vehicle is determined to be in a collision.

[0013] Secondly, this application also provides a vehicle collision protection method, the method comprising:

[0014] Acquire vehicle driving information, wherein the vehicle driving information includes the vehicle speed change value and the distance between the vehicle and the obstacle directly in front;

[0015] Detect whether the change in vehicle speed within the specified interval exceeds a preset vehicle speed change threshold;

[0016] If so, a safety airbag deployment signal is triggered to the generator connected to the airbag, and the generator is controlled to detonate the airbag.

[0017] In one possible design, detecting whether the vehicle speed change value within the interval exceeds a preset vehicle speed change threshold further includes:

[0018] If not, the airbag is kept in an undeployed state.

[0019] Thirdly, embodiments of this application provide a vehicle body, the vehicle body including: an automotive anti-collision beam structure as described in the first aspect is connected to the vehicle body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the airbag deployment provided in the embodiments of this application;

[0021] Figure 2 This is a schematic diagram of a vehicle collision protection structure provided in an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the external force decomposition of the vehicle front collision beam provided in the embodiments of this application;

[0023] Figure 4 This is a schematic diagram of the airbag 22 provided in the embodiment of this application being rolled up and folded.

[0024] Figure 5 This is a schematic diagram of the connection between the airbag 22 and the airbag mounting bracket provided in the embodiments of this application;

[0025] Figure 6 This is a schematic diagram of the front view of the generator's composition structure provided in the embodiments of this application;

[0026] Figure 7 This is a schematic diagram of the top view of the generator's structural components provided in the embodiments of this application;

[0027] Figure 8 This is a schematic diagram of the cross-sectional structure of the airbag fixation bracket provided in the embodiments of this application;

[0028] Figure 9 This is a schematic diagram of the front view of the airbag fixing bracket provided in the embodiment of this application;

[0029] Figure 10 This is a flowchart of a vehicle collision protection method provided in an embodiment of this application. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. However, the exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the figures denote the same or similar structures, and therefore repeated descriptions of them will be omitted. Terms describing position and direction in the present invention are illustrative based on the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of the present invention. The accompanying drawings of the present invention are for illustrative purposes only and do not represent actual proportions.

[0031] In existing technology, to reduce the risks associated with a frontal collision, airbags are installed inside the vehicle. A schematic diagram of the airbag deployment is shown below. Figure 1 As shown, when a vehicle collides with an object at a speed of V, the airbags deployed on the vehicle's steering control system are used to ensure the driver's safety. Improving the vehicle's body structure and increasing the size of the front collision beam increases the collision overlap, resulting in a significant increase in weight. However, since the collision beam is made of metal, increasing its area will significantly increase its weight, failing to achieve the goal of vehicle lightweighting. Therefore, while maintaining vehicle lightweighting, how to reduce the risk of frontal collisions has become a problem that needs to be solved.

[0032] To address the aforementioned issues, this application provides a vehicle collision protection structure for triggering an airbag located within the front bumper of the vehicle before a collision occurs, thereby reducing the risk associated with a vehicle collision.

[0033] This application provides a vehicle collision protection structure, please refer to [link / reference]. Figure 2 The vehicle collision protection structure includes a front bumper 21, an airbag 22, a front collision beam 23, and a guide bracket 24. The front collision beam 23 and the airbag 22 are connected by the guide bracket 24, which is welded to the front collision beam 23 by a vehicle bracket. The airbag 22 is deployed from the position between the front bumper 21 and the guide bracket 24 in response to the radar signal of the vehicle radar device.

[0034] When the front bumper 21 of the vehicle is impacted by an external force, the force is first applied to the front bumper 21, which then distributes the force to the energy-absorbing boxes on both sides of the vehicle before transmitting it to the front collision beam 23 behind the front bumper 21. The front collision beam 23 is used to ensure the torsional stiffness of the frame and to withstand longitudinal loads, ensuring that it has sufficient strength and stiffness to withstand the load caused by the external impact and the impact from the vehicle wheels. Furthermore, when the external force increases further, the front collision beam 23 has two concave structures that decompose the received external force. A schematic diagram of the force decomposition of the front collision beam is shown below. Figure 3 As shown, in Figure 3 In the process, after the front collision beam 23 receives the external force transmitted by the front bumper 21, due to the concave structure of the front collision beam 23, the external force will extend to both sides of the front collision beam 23. Therefore, the front collision beam 23 can decompose and transfer the external force to the vehicle body by deforming and absorbing the impact force when it is hit by a collision, thereby reducing the impact force when the vehicle is involved in a frontal collision and thus preventing the front collision beam 23 from collapsing further.

[0035] It should be noted that the front collision beam 23 is connected to the vehicle body by riveting, but it can also be connected by bolt fastening, gluing, welding, etc. The connection method between the front collision beam 23 and the vehicle body can be selected according to the actual situation, and no specific limitation is made here.

[0036] Since the present application embodiment is designed to trigger the deployment of the airbag 22 in the passive safety system before a frontal collision occurs, an airbag 22 deployment position device is provided between the airbag 22 and the front bumper 21 of the vehicle. This deployment position device is used to determine the preset deployment position of the airbag 22.

[0037] The airbag 22 is secured by multiple airbag mounting brackets and folds in a roll-up manner. A schematic diagram of the roll-up folding of the airbag 22 is shown below. Figure 4 As shown, according to Figure 4 The folding design helps save space and facilitates the rapid deployment of the airbag 22. A schematic diagram of the connection between the airbag 22 and the airbag mounting bracket is shown below. Figure 5 As shown, in Figure 5 There are four airbag mounting brackets for fixing the roll-up folding airbag 22. A generator is also connected to the airbag 22 for detonating the airbag 22.

[0038] The generator described above is fixed on the guide bracket 24. The generator's components include: clamps, a generator fixing plate, positioning pins, and fixing bolts. A schematic diagram of the generator's components is shown in the front view. Figure 6 As shown, in Figure 6 In the middle, the generator is fixed to the generator mounting plate by two metal clamps, and then the generator mounting plate is fixed to the guide bracket 24 by fixing bolts and positioning pins. The schematic diagram of the generator's composition structure is shown in the bottom view. Figure 7 As shown above, Figure 2 The circle below the airbag is Figure 7 Cross-sectional view of the clamp of the generator.

[0039] The above description shows that the generator is connected to the guide bracket 24 via a generator mounting plate. Since the airbag is fixed to the vehicle body via the airbag mounting bracket when not in use, a schematic cross-sectional view of the airbag mounting bracket's structure is shown below. Figure 8 As shown, in Figure 8The airbag fixing bracket includes a positioning plate, a fixing plate, a flat washer, a spring washer, and a screw. The screw can be an M6 screw. The positioning plate is located between the fixing plate and the flat washer, and the spring washer is located between the flat washer and the screw. This makes the airbag fixed by the screw more stable according to the bracket and prevents the airbag fixing bracket from loosening due to the screw coming off.

[0040] A schematic diagram of the front view of the airbag fixation bracket is shown below. Figure 9 As shown, in Figure 9 In this case, the screws for the airbag fixing bracket are M6 screws. Other screws used for fixing can also be used instead, which will not be discussed in detail here.

[0041] It should be noted that the guide bracket 24 is an obtuse-angle bracket. The generator mounting plate is installed at the obtuse-angle recess of the guide bracket 24. Before the vehicle determines that a collision will occur based on radar signals, the vehicle can activate the airbag 22 through the generator, so that the vehicle can reduce the injury to the driver and the vehicle when a collision occurs.

[0042] Based on the above structure, the airbag 22 is placed between the front bumper 21 and the front collision beam 23 of the vehicle. Before a collision is determined, the airbag generator can be activated by radar signal, so that the airbag can be deployed at a preset position, thereby reducing the risk of the vehicle in the event of a collision.

[0043] In addition, this application also provides a vehicle collision protection method.

[0044] Figure 10 This is a flowchart of a vehicle collision protection method provided in an embodiment of this application.

[0045] like Figure 10 As shown, the vehicle collision protection method proposed in this application includes the following steps:

[0046] Step S1001: Obtain vehicle driving information, wherein the vehicle driving information is the vehicle speed change value and the distance between the vehicle and the obstacle directly in front;

[0047] To determine whether a vehicle will collide with an obstacle in front of it before a collision occurs, the obstacle can be a pedestrian or another vehicle, and can be stationary or moving (this is not a specific limitation). First, it is necessary to obtain the vehicle's driving information, which includes the vehicle's speed change value and the distance between the vehicle and the obstacle directly in front. Based on the vehicle's speed change value and the distance, the relative motion between the vehicle and the obstacle can be determined, which is helpful in determining whether the vehicle and the obstacle have collided.

[0048] Step S1002: Detect whether the vehicle speed change value within the interval exceeds a preset vehicle speed change threshold;

[0049] After determining the vehicle's driving information, it is necessary to detect whether the vehicle's speed change value within the interval exceeds a preset vehicle speed threshold. This preset vehicle speed threshold is the minimum speed change threshold at which the vehicle collides with the obstacle ahead within the interval. In this embodiment, the collision is determined by the movement between the vehicle and the obstacle ahead. The specific calculation process is not described in detail here.

[0050] Step S1003: If yes, then trigger the sending of an airbag deployment signal to the generator connected to the airbag, and control the generator to detonate the airbag.

[0051] When the vehicle speed change exceeds a preset vehicle speed change threshold, the vehicle's radar device will send a vehicle radar signal to the generator connected to the airbag and control the generator to deploy the airbag, thereby triggering the airbag in the passive safety system before a collision occurs, reducing the risk of a collision.

[0052] After step S1002, step S1004 is also included: if not, the airbag is controlled to be in an undeployed state.

[0053] When the vehicle speed change value is lower than the preset vehicle speed change threshold, it means that the vehicle will not collide with the obstacle in front within the interval distance. Therefore, the airbags remain in an undeployed state.

[0054] According to the first inventive concept, this application provides a vehicle collision protection structure, the vehicle protection structure including: a vehicle front collision beam, a vehicle front bumper, a guide bracket and an airbag, the vehicle front collision beam and the airbag are connected by the guide bracket, the vehicle front collision beam and the guide bracket are welded by a vehicle bracket, and the airbag is detonated from the position between the vehicle front bumper and the guide bracket in response to the radar signal of the vehicle radar device.

[0055] According to the second inventive concept, the vehicle protection structure includes: an initiation position device disposed between the vehicle front bumper and the airbag, wherein the initiation position device is used to determine the preset initiation position of the airbag.

[0056] According to the third inventive concept, the vehicle protection structure includes: the airbag is folded in a roll-up manner and fixed by multiple airbag mounting brackets, and each airbag mounting bracket is fixed to the generator mounting plate.

[0057] According to the fourth inventive concept, the vehicle protection structure includes: the generator includes a clamp, a generator fixing plate, a positioning pin, and a fixing bolt, the clamp fixing the generator to the generator fixing plate, and the fixing bolt and the positioning pin fixing the generator fixing plate to the guide bracket.

[0058] According to the fifth inventive concept, the vehicle protection structure includes: the airbag fixing bracket includes a positioning plate, a fixing plate, a flat washer, a spring washer, and a screw, wherein the positioning plate is fixed between the fixing plate and the flat washer, and the flat washer and the spring washer are between the screw and the positioning plate to prevent the screw from coming off.

[0059] According to the sixth inventive concept, the vehicle protection structure includes: two recessed structures on the front collision beam of the vehicle, so that the front collision beam structure can be buffered and absorb impact force through deformation when it is subjected to a collision.

[0060] According to the seventh inventive concept, the vehicle protection structure includes: the guide bracket is an obtuse-angle bracket, and the generator fixing plate is installed at the obtuse-angle recess of the guide bracket, so that before the vehicle is determined to be hit by a collision, the vehicle can detonate the airbag at the preset detonation position through the generator.

[0061] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0062] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0063] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0064] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0065] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A vehicle collision protection structure, characterized by, The vehicle front collision beam is connected with the airbag through the guide bracket, the vehicle front collision beam is welded with the guide bracket through the vehicle bracket, two recess structures are arranged on the vehicle front collision beam, so that the vehicle front collision beam structure is deformed to buffer and absorb impact force when the vehicle front collision beam structure is collided, the guide bracket is an obtuse angle bracket, a generator fixing plate is arranged in the obtuse angle recess of the guide bracket, so that the vehicle can detonate the airbag at a preset detonation position through the generator before it is determined to be collided, and the airbag is detonated from a position between the vehicle front bumper and the guide bracket in response to a radar signal of the vehicle radar device.

2. The vehicle collision protection structure according to claim 1, characterized by An airbag detonation position device is arranged between the vehicle front bumper and the airbag, wherein the airbag detonation position device is used to determine a preset detonation position of the airbag.

3. The vehicle collision protection structure according to claim 1, wherein The airbag is folded in a winding manner and is fixed through a plurality of airbag mounting brackets, and each airbag mounting bracket is fixed on the generator fixing plate.

4. The vehicle collision protection structure according to claim 3, wherein The generator comprises a clamp, a generator fixing plate, a positioning pin and a fixing bolt, the clamp is used to fix the generator on the generator fixing plate, and the generator fixing plate is fixed on the guide bracket based on the fixing bolt and the positioning pin.

5. The vehicle collision protection structure according to claim 3, wherein The airbag fixing bracket comprises a positioning plate, a fixing plate, a flat pad, a spring pad and a screw, the positioning plate is fixed between the fixing plate and the flat pad, the flat pad and the spring pad are arranged between the screw and the positioning plate, and the screw is prevented from being separated.

6. A vehicle collision protection method characterized by, Comprise: Obtain vehicle driving information, wherein the vehicle driving information is a vehicle speed change value and a distance between the vehicle and an obstacle in front of the vehicle; Detect whether the vehicle speed change value of the vehicle in the distance exceeds a preset vehicle speed change threshold value; If yes, trigger the airbag detonation signal to the generator connected with the airbag, and control the generator to detonate the airbag, the airbag is connected with the vehicle front collision beam through the guide bracket, the vehicle front collision beam is welded with the guide bracket through the vehicle bracket, two recess structures are arranged on the vehicle front collision beam, so that the vehicle front collision beam structure is deformed to buffer and absorb impact force when the vehicle front collision beam structure is collided, the guide bracket is an obtuse angle bracket, a generator fixing plate is arranged in the obtuse angle recess of the guide bracket, so that the vehicle can detonate the airbag at a preset detonation position through the generator before it is determined to be collided.

7. The method of claim 6, wherein, Detect whether the vehicle speed change value of the vehicle in the distance exceeds a preset vehicle speed change threshold value, further comprising: If no, control the airbag to be in a non-detonation state.

8. A vehicle body, characterized by The vehicle body is connected with the vehicle collision protection structure according to any one of claims 1-5.

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