Active engine hood assembly, vehicle and control method of vehicle

Abstract

The invention provides an active engine hood assembly, a vehicle and a control method of the vehicle, and relates to the technical field of vehicle jacking devices, the active engine hood assembly comprises an engine hood assembly used for being connected with a vehicle body, and the engine hood assembly is movably arranged relative to the vehicle body; one end of each jacking assembly is connected with the engine hood assembly, the other end of each jacking assembly is used for being connected with a vehicle body, the jacking assemblies are movably arranged relative to the vehicle body in the height direction of the vehicle body, the number of the jacking assemblies is two, one jacking assembly is located at the front end of the engine hood assembly, and the other jacking assembly is located at the rear end of the vehicle body. The other jacking assembly is located at the rear end of the engine hood assembly. The two jacking assemblies move in the height direction of the vehicle body and drive the engine hood assembly to move relative to the vehicle body. By means of the technical scheme, the front-back double-jacking function of the engine hood is achieved, and the problem that in the prior art, a rear jacking engine hood is poor in buffering effect during collision is solved.

Description

Technical Field

[0001] This application relates to the field of vehicle lift technology, and more specifically, to an active engine hood assembly, a vehicle, and a method for controlling the vehicle. Background Technology

[0002] Traditionally, active hood technology has been incorporated into vehicle design to reduce pedestrian injuries, especially head injuries, during car-pedestrian collisions. Existing active hood systems primarily employ a rear-lift design. When a potential pedestrian collision is detected, the rear of the hood—typically the part closest to the windshield—rapidly rises to increase the buffer distance between the pedestrian's head and hard objects in the engine compartment upon impact, thereby reducing the risk of head injury. This design effectively improves the safety of many vehicle models, particularly those with lower ride heights and head impact zones located in the middle or rear of the hood.

[0003] However, for some ultra-luxury vehicles, the traditional rear lift design cannot effectively cover all areas where head collisions may occur, especially in the event of a collision with a child or a short adult pedestrian. Due to the high design of the front of the hood, even if the rear of the hood is lifted, the head of a child or a shorter adult may still hit the high front of the hood first in a collision, resulting in poor cushioning and failing to reduce the injury value to the safe range required by regulations.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] The main objective of this application is to provide an active engine hood assembly, a vehicle, and a method for controlling the vehicle, in order to solve the problem that the rear-lift engine hood in the prior art has poor cushioning effect during a collision.

[0006] To achieve the above objectives, according to one aspect of this application, an active hood assembly is provided, comprising: a hood assembly for connection to a vehicle body, the hood assembly being movably disposed relative to the vehicle body; and a lifting assembly, one end of which is connected to the hood assembly, the other end of which is connected to the vehicle body, the lifting assembly being movably disposed relative to the vehicle body along the height direction of the vehicle body, the lifting assembly comprising two sets, one set of lifting assemblies being located at the front end of the hood assembly, and the other set of lifting assemblies being located at the rear end of the hood assembly; wherein both sets of lifting assemblies move along the height direction of the vehicle body, thereby causing the hood assembly to move relative to the vehicle body.

[0007] Furthermore, the active hood assembly also includes: a locking assembly, one end of which is connected to the hood assembly via a lifting assembly, and the other end of which is connected to the vehicle body. The locking assembly has a locking state that connects the hood assembly to the vehicle body, and a releasing state that disconnects the hood assembly from the vehicle body. There are two sets of locking assemblies, and the two sets of locking assemblies are arranged in a one-to-one correspondence with the two sets of lifting assemblies. When both sets of locking assemblies are in the locked state, both sets of lifting assemblies move along the height direction of the vehicle body, causing the hood assembly to move relative to the vehicle body.

[0008] Furthermore, the lifting assembly includes: a hinge, a locking assembly connected to a first end of the hinge, and a second end of the hinge rotatably disposed relative to the first end of the hinge; a lifter located below the second end of the hinge, the first end of the lifter being used to connect to the vehicle body, and the second end of the lifter being retractably disposed along the height direction of the vehicle body; wherein, when the locking assembly is in the locked state, the lifter moves along the height direction of the vehicle body toward the second end of the hinge, thereby driving the engine hood assembly to move along the height direction of the vehicle body via the hinge.

[0009] Furthermore, the lifting assembly includes: a first reinforcing plate connected to the engine hood assembly and connected to the third end of a hinge, the third end of which is located between the first and second ends of the hinge; and a second reinforcing plate located below the first reinforcing plate, the first end of the hinge being connected to a locking assembly via the second reinforcing plate, the second reinforcing plate having a through hole, the second end of the hinge having a first working position within the through hole and a second working position outside the through hole; wherein, when the locking assembly is in the locked state, the lifter moves along the height direction of the vehicle body toward the second end of the hinge, causing the second end of the hinge to move from the first working position to the second working position, thereby causing the first reinforcing plate to move the engine hood assembly along the height direction of the vehicle body.

[0010] Furthermore, the first reinforcing plate includes: a first reinforcing plate body, which is connected to the engine hood assembly; an extension section, one end of which is connected to the first reinforcing plate body, and the other end of which extends away from the engine hood assembly along the height direction of the vehicle body, and a hinge is movably connected to the extension section.

[0011] Further, the hinge includes: a hinge rotation shaft connected to a first reinforcing plate, the hinge rotation shaft being movably disposed relative to the first reinforcing plate; a first hinge arm, one end of the first hinge arm being connected to a second reinforcing plate, the second end of the first hinge arm being connected to an extension section via the hinge rotation shaft, the first hinge arm being rotatably disposed relative to the first reinforcing plate; and a second hinge arm, the second hinge arm being connected to the extension section via the hinge rotation shaft, the second hinge arm being rotatably disposed relative to the extension section, the second hinge arm having a first working position and a second working position; wherein, when the locking assembly is in the locked state, the lifter extends along the height direction of the vehicle body, the second end of the lifter drives the second hinge arm to move from the first working position to the second working position, driving the first reinforcing plate to drive the engine hood assembly to move along the height direction of the vehicle body.

[0012] Furthermore, the second hinge arm includes: a second hinge arm body, the second hinge arm body being connected to the extension section via a hinge rotation axis; and a limiting section, the limiting section being connected to the second hinge arm body, a portion of the limiting section extending along the thickness direction of the second hinge arm body, and another portion of the limiting section extending along the length direction of the second hinge arm body, the limiting section having a first working position and a second working position.

[0013] Furthermore, the limiting segment includes: a first limiting segment, the first end of which is connected to the second hinge arm body, and the second end of which extends along the thickness direction of the second hinge arm body; and a second limiting segment, the first end of which is connected to the second end of the first limiting segment, and the second end of which extends along the length direction of the second hinge arm body; wherein, when the limiting segment is in the first working position, the first limiting segment is located inside the through hole.

[0014] Furthermore, the extension section has a limiting groove, the length of which is set along the height direction of the vehicle body, and the first hinge arm has a limiting block located in the limiting groove, the limiting block being movably set along the length direction of the limiting groove.

[0015] Furthermore, the lifting assembly also includes an elastic element, which is arranged circumferentially along the hinge rotation axis, with one end of the elastic element extending toward the first reinforcing plate and the other end of the elastic element extending toward the second hinge arm body.

[0016] Furthermore, the maximum lifting height of the lifting assembly located at the front end of the engine hood assembly is L1, and the maximum lifting height of the lifting assembly located at the rear end of the engine hood assembly is L2, wherein L2>L1.

[0017] According to another aspect of this application, a vehicle is provided, including an active engine hood assembly, the active engine hood assembly being the aforementioned active engine hood assembly.

[0018] According to another aspect of this application, a vehicle control method is provided for controlling the aforementioned vehicle. The control method includes: acquiring radar information and camera information; determining collision risk information based on the radar information and camera information; and controlling two sets of lifting components to perform lifting operations simultaneously in response to the collision risk information meeting preset conditions.

[0019] By applying the technical solution of this application, the active hood assembly realizes the dual lifting function of the hood by arranging lifting components at the front and rear ends of the hood assembly. When the lifting components move along the height direction of the vehicle body, the hood assembly rises accordingly, increasing the buffer distance between the pedestrian's head and the hard components of the engine compartment, thereby effectively reducing the head injury value. Compared with an active hood that only lifts the rear, the dual lifting structure can provide a more uniform lifting force, ensuring that the hood remains stable during the lifting process, avoiding the local warping or damage of the hood that may occur due to single-point lifting, and solving the problem of poor buffering effect of the rear-lifting hood in the prior art during a collision. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 A schematic diagram of the structure of a first embodiment of the active engine hood assembly according to this application is shown;

[0022] Figure 2 A schematic diagram of the structure of a second embodiment of the active engine hood assembly according to this application is shown;

[0023] Figure 3 A structural schematic diagram of a third embodiment of the active engine hood assembly according to this application is shown;

[0024] Figure 4 A structural schematic diagram of a fourth embodiment of the active engine hood assembly according to this application is shown;

[0025] Figure 5 A flowchart illustrating an embodiment of the vehicle control method according to this application is shown.

[0026] The above figures include the following reference numerals:

[0027] 10. Engine hood assembly;

[0028] 11. Engine hood outer panel;

[0029] 12. Engine hood inner panel;

[0030] 20. Lifting components;

[0031] 21. First reinforcing plate;

[0032] 210. First reinforcing plate body;

[0033] 211. Extension Section;

[0034] 2111, Limiting groove;

[0035] 22. Second reinforcing plate;

[0036] 221. Through hole;

[0037] 23. Hinges;

[0038] 231. First hinge arm;

[0039] 2311, Limit block;

[0040] 232. Second hinge arm;

[0041] 2320. Second hinge arm body;

[0042] 2321, Limiting segment;

[0043] 23211, First limit segment;

[0044] 23212, Second limit segment;

[0045] 233. Hinge rotation axis;

[0046] 24. Lifting device;

[0047] 25. Elastic components;

[0048] 26. Gas strut;

[0049] 30. Locking assembly;

[0050] 31. Lock;

[0051] 32. Locking ring. Detailed Implementation

[0052] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0053] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0054] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0055] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0056] Combination Figures 1 to 4 In a specific embodiment of this application, an active engine hood assembly is provided.

[0057] Specifically, the active hood assembly includes a hood assembly 10 and a lifting assembly 20. The hood assembly 10 is used to connect to the vehicle body and is movably disposed relative to the vehicle body. One end of the lifting assembly 20 is connected to the hood assembly 10, and the other end of the lifting assembly 20 is used to connect to the vehicle body. The lifting assembly 20 is movably disposed relative to the vehicle body along the height direction of the vehicle body. There are two sets of lifting assemblies 20, one set located at the front end of the hood assembly 10 and the other set located at the rear end of the hood assembly 10. Both sets of lifting assemblies 20 move along the height direction of the vehicle body, thereby moving the hood assembly 10 relative to the vehicle body.

[0058] Combination Figure 1 As shown, in this embodiment, the hood assembly 10 includes an outer hood panel 11 and an inner hood panel 12. The lifting assembly 20 is divided into two groups: one group is located at the front end of the hood assembly 10 (front lifting assembly), and the other group is located at the rear end (rear lifting assembly). The lifting assemblies 20 are movably arranged along the height direction of the vehicle body, meaning they can move vertically. This design ensures that when the lifting action is triggered, the lifters can quickly raise the front and rear of the hood assembly 10 simultaneously to a set height, increasing the buffer distance for pedestrian head collisions. This dual-group arrangement overcomes the limitations that may exist in some models where only the rear is lifted, especially in ultra-luxury models or when the front end of the hood is high, providing more comprehensive head collision buffering.

[0059] Furthermore, the active hood assembly also includes a locking assembly 30. One end of the locking assembly 30 is connected to the hood assembly 10 via the lifting assembly 20, and the other end of the locking assembly 30 is used to connect to the vehicle body. The locking assembly 30 has a locking state that connects the hood assembly 10 to the vehicle body, and a releasing state that disconnects the hood assembly 10 from the vehicle body. There are two sets of locking assemblies 30, and the two sets of locking assemblies 30 are arranged in a one-to-one correspondence with the two sets of lifting assemblies 20. When both sets of locking assemblies 30 are in the locked state, both sets of lifting assemblies 20 move along the height direction of the vehicle body, causing the hood assembly 10 to move relative to the vehicle body.

[0060] Combination Figure 1 As shown, in this embodiment, the active hood assembly integrates a locking component 30. One end of this component is connected to the hood assembly 10 via the lifting component 20, and the other end is connected to the vehicle body. The locking component 30 has two states: a locked state that locks the hood assembly 10 to the vehicle body, and a released state that allows them to separate. Two sets of locking components 30 are configured, corresponding one-to-one with the lifting component 20, and work together. When both sets of locking components 30 are locked, when the lifting component 20 moves along the height direction of the vehicle body, it can drive the hood assembly 10 to move upward relative to the vehicle body. This design ensures that in an emergency, the hood can be raised quickly and effectively, providing an additional safety buffer for pedestrian head collisions, thereby significantly reducing collision injuries and meeting pedestrian protection regulations.

[0061] Furthermore, combined Figures 2 to 4As shown, the locking assembly 30 includes a lock 31 and a locking ring 32. When the lock 31 and the locking ring 32 are connected, the locking assembly 30 connects the engine hood assembly 10 to the vehicle body. When the lock 31 and the locking ring 32 are separated, the locking assembly 30 disconnects the engine hood assembly 10 from the vehicle body. During normal vehicle operation and when a collision triggers a lifting operation, the locking assembly 30 remains locked. It is only released when unlocking is required. This design ensures the stability and safety of the engine hood during the lifting process.

[0062] Furthermore, the lifting assembly 20 includes a hinge 23 and a lifter 24. The locking assembly 30 is connected to the first end of the hinge 23, and the second end of the hinge 23 is rotatably disposed relative to the first end of the hinge 23. The lifter 24 is located below the second end of the hinge 23. The first end of the lifter 24 is used to connect to the vehicle body, and the second end of the lifter 24 is telescopically disposed along the height direction of the vehicle body. When the locking assembly 30 is in the locked state, the lifter 24 moves along the height direction of the vehicle body toward the second end of the hinge 23, thereby driving the engine hood assembly 10 to move along the height direction of the vehicle body via the hinge 23.

[0063] Combination Figure 2 and Figure 3 As shown, when the locking assembly 30 is in the locked state, and the lifter 24 receives a trigger signal, the lifter 24 extends upward along the vehicle height direction, pushing the second end of the hinge 23. The rotation of the hinge 23 causes the hood assembly 10 to move upward. This design allows the lifter 24 to respond quickly in potential pedestrian collisions, effectively improving the cushioning capacity of the hood assembly 10 and providing a longer buffer distance for the pedestrian's head, thereby reducing injury from the collision. Through the coordinated work of the lifter 24 and the hinge 23, the stability and safety of the hood during the lifting process are ensured, while also optimizing pedestrian protection after a collision.

[0064] Furthermore, the lifting assembly 20 includes a first reinforcing plate 21 and a second reinforcing plate 22. The first reinforcing plate 21 is connected to the engine hood assembly 10 and to the third end of the hinge 23. The third end of the hinge 23 is located between the first end and the second end of the hinge 23. The second reinforcing plate 22 is located below the first reinforcing plate 21. The first end of the hinge 23 is connected to the locking assembly 30 through the second reinforcing plate 22. The second reinforcing plate 22 has a through hole 221. The second end of the hinge 23 has a first working position located within the through hole 221 and a second working position located outside the through hole 221. When the locking assembly 30 is in the locked state, the lifting device 24 moves towards the second end of the hinge 23 along the height direction of the vehicle body, causing the second end of the hinge 23 to move from the first working position to the second working position, thereby causing the first reinforcing plate 21 to move the engine hood assembly 10 along the height direction of the vehicle body.

[0065] In this embodiment, the lifting assembly includes a first reinforcing plate 21 and a second reinforcing plate 22. The first reinforcing plate 21 is connected to the engine hood assembly 10 and also connects to the third end of the hinge 23, which is located between the first and second ends of the hinge. The second reinforcing plate 22 is disposed below the first reinforcing plate 21. The first end of the hinge 23 is coupled to the locking assembly 30 through the second reinforcing plate 22. Specifically, the second reinforcing plate 22 has a through hole 221, allowing the second end of the hinge 23 to be in a first working position within the through hole 221 (e.g., ...). Figure 2 As shown, at this time, the lifting device 24 is not triggered), or it is moved outside the through hole 221 to the second working position (such as...). Figure 3 As shown, when the lifter 24 is triggered, it lifts the first reinforcing plate 21 and the engine hood assembly 10. When the locking assembly 30 is locked and pushed by the lifter 24 along the vehicle height direction, the second end of the hinge 23 moves from the first working position to the second working position, and then drives the entire engine hood assembly 10 upward through the first reinforcing plate 21. This design ensures that the engine hood assembly 10 can be lifted quickly and effectively in a pedestrian collision, increasing the buffer distance between the pedestrian's head and hard objects in the cabin, thereby significantly reducing the risk of pedestrian head injury and meeting strict pedestrian protection regulations. At the same time, by changing the working positions of the two ends of the hinge 23, precise control and stability of the lifting process of the engine hood assembly 10 are achieved, ensuring the safety and reliability of the system operation.

[0066] Furthermore, the first reinforcing plate 21 includes a first reinforcing plate body 210 and an extension 211. The first reinforcing plate body 210 is connected to the engine hood assembly 10. One end of the extension 211 is connected to the first reinforcing plate body 210, and the other end of the extension 211 extends away from the engine hood assembly 10 along the height direction of the vehicle body. The hinge 23 is movably connected to the extension 211.

[0067] Combination Figure 3 As shown, in this embodiment, the first reinforcing plate 21 includes a first reinforcing plate body 210 and an extension section 211. The first reinforcing plate body 210 is connected to the engine hood assembly 10, while one end of the extension section 211 is connected to the first reinforcing plate body 210, and the other end extends downward along the vehicle height direction. The hinge 23 is movably connected to the extension section 211, ensuring the stability and flexibility of the engine hood assembly 10 during the lifting process, thereby providing more effective head protection in the event of a pedestrian collision. Simultaneously, the specific arrangement of the extension section 211 ensures the smoothness of the lifting process, avoiding additional risks caused by lifting. The implementation of this technical solution significantly improves the safety of pedestrian head protection in ultra-luxury vehicles.

[0068] Furthermore, the hinge 23 includes a first hinge arm 231, a second hinge arm 232, and a hinge rotation shaft 233. The hinge rotation shaft 233 is connected to the first reinforcing plate 21 and is movably disposed relative to the first reinforcing plate 21. One end of the first hinge arm 231 is connected to the second reinforcing plate 22, and the second end of the first hinge arm 231 is connected to the extension section 211 via the hinge rotation shaft 233. The first hinge arm 231 is rotatably disposed relative to the first reinforcing plate 21 and is rotatably disposed relative to the second reinforcing plate 22. 22; The second hinge arm 232 is connected to the extension section 211 via the hinge rotation shaft 233. The second hinge arm 232 is rotatably arranged relative to the extension section 211. The second hinge arm 232 has a first working position and a second working position. When the locking assembly 30 is in the locked state, the lifter 24 extends along the height direction of the vehicle body. The second end of the lifter 24 drives the second hinge arm 232 to move from the first working position to the second working position, thereby driving the first reinforcing plate 21 to move the engine hood assembly 10 along the height direction of the vehicle body.

[0069] In this embodiment, the first end of the hinge 23 is the end of the first hinge arm 231 away from the hinge rotation axis 233, the second end of the hinge 23 is the end of the second hinge arm 232 away from the hinge rotation axis 233, and the third end of the hinge 23 is the hinge rotation axis 233 (the end where the first hinge arm 231 is connected to the hinge rotation axis 233, and the end where the second hinge arm 232 is connected to the hinge rotation axis 233). The hinge 23 includes a composite structure of the hinge rotation axis 233, the first hinge arm 231, and the second hinge arm 232. The hinge rotation axis 233 is connected to the first reinforcing plate 21 and is configured to be movable relative to the first reinforcing plate 21. One end of the first hinge arm 231 is connected to the second reinforcing plate 22, and the other end is connected to the extension 211 of the first reinforcing plate 21 through the hinge rotation axis 233, and it is rotatable relative to the first reinforcing plate 21 and the second reinforcing plate 22. The second hinge arm 232 is also connected to the extension section 211 via the hinge rotation shaft 233. It has the ability to rotate relative to the extension section 211 and has a first working position and a second working position. When the locking assembly 30 is in the locked state and the lifter 24 extends along the height direction of the vehicle body, the second end of the lifter 24 drives the second hinge arm 232 to switch from the first working position to the second working position, thereby driving the entire engine hood assembly 10 to move upward. This ensures that the engine hood assembly 10 can be quickly raised before a collision, providing additional buffer space for the pedestrian's head, significantly improving the protection effect for the pedestrian, and ensuring the normal operation and use safety of the vehicle in a non-collision state.

[0070] Furthermore, the second hinge arm 232 includes a second hinge arm body 2320 and a limiting segment 2321. The second hinge arm body 2320 is connected to the extension segment 211 via a hinge rotation shaft 233. The limiting segment 2321 is connected to the second hinge arm body 2320. A portion of the limiting segment 2321 extends along the thickness direction of the second hinge arm body 2320, and another portion of the limiting segment 2321 extends along the length direction of the second hinge arm body 2320. The limiting segment 2321 has a first working position and a second working position.

[0071] Combination Figure 3 As shown, in this embodiment, the second hinge arm body 2320 and the extension section 211 are connected via a hinge rotation shaft 233. The limiting section 2321, as a component of the second hinge arm 232, is connected to the second hinge arm body 2320 and extends in both the thickness and length directions to provide a limiting function. The design of its first and second working positions prevents the lifting assembly 20 from being falsely triggered by vibrations or impacts during vehicle movement. This not only improves the overall performance of the active hood system but also enhances its adaptability and reliability. In other embodiments, the limiting section 2321 of the second hinge arm 232 can be appropriately adjusted and optimized according to different hood sizes and shapes to meet the pedestrian protection needs of specific vehicle models.

[0072] Furthermore, the limiting segment 2321 includes a first limiting segment 23211 and a second limiting segment 23212. The first end of the first limiting segment 23211 is connected to the second hinge arm body 2320, and the second end of the first limiting segment 23211 extends along the thickness direction of the second hinge arm body 2320. The first end of the second limiting segment 23212 is connected to the second end of the first limiting segment 23211, and the second end of the second limiting segment 23212 extends along the length direction of the second hinge arm body 2320. When the limiting segment 2321 is in the first working position, the first limiting segment 23211 is located inside the through hole 221.

[0073] Combination Figure 3 As shown, when the limiting segment 2321 is in the first working position, the first limiting segment 23211 is located within the through hole 221. The second limiting segment 23212, in conjunction with the second reinforcing plate 22, effectively limits the lifting movement of the hood, preventing excessive offset or shaking of the engine hood assembly 10 during the lifting process. This ensures the accuracy and stability of the lifting action and also enhances the safety of the entire system. The segmented structure of the limiting segment 2321 not only provides sufficient rigid support but also allows for flexible adjustment according to the hood size of different vehicle models, ensuring the consistency and reliability of the limiting effect.

[0074] In this embodiment, before the lifting device 24 lifts, the limiting segment 2321 is in the first working position. At this time, the first limiting segment 23211 is located inside the through hole 221. The second limiting segment 23212 cooperates with the second reinforcing plate 22 to effectively limit the lifting movement of the hairnet (e.g., Figure 2 As shown), it forms a limit in a static state. When the lifter 24 is activated and begins the lifting action, the generated force is transmitted to the second reinforcing plate 22, causing it to move relative to the limit segment 2321. This process is accompanied by a slight elastic deformation of the limit segment 2321, allowing it to smoothly disengage from the through hole 221, thereby releasing the constraint on the second hinge arm 232. As the limit segment 2321 disengages, the second hinge arm 232 can rotate clockwise around the hinge rotation axis 233, thereby guiding the entire engine hood assembly 10 to move upward, forming an effective lifting effect (as shown). Figure 3 (As shown). This design ensures that the hood assembly 10 can rise rapidly in the instant of a potential collision, providing additional buffer space for possible pedestrian head impacts and significantly enhancing pedestrian protection. At the same time, thanks to the precise control and release mechanism of the limiting segment 2321, even in the event of a lift, the vehicle's normal driving status and operational safety can be maintained, avoiding unnecessary driving risks.

[0075] Furthermore, the extension section 211 has a limiting groove 2111, the length of which is set along the height direction of the vehicle body, and the first hinge arm 231 has a limiting block 2311, which is located in the limiting groove 2111 and is movably set along the length of the limiting groove 2111.

[0076] In this embodiment, before the lifting device 24 lifts, the limiting segment 2321 is in the first working position. At this time, the first limiting segment 23211 is located inside the through hole 221. The second limiting segment 23212 cooperates with the second reinforcing plate 22 to effectively limit the lifting movement of the hairnet (e.g., Figure 2 As shown), a limit is formed in a static state. When the lifter 24 is activated and begins the lifting action, the generated force is transmitted to the second reinforcing plate 22, causing it to move relative to the limit segment 2321. This process is accompanied by a slight elastic deformation of the limit segment 2321, allowing it to smoothly disengage from the through hole 221, thereby releasing the constraint on the second hinge arm 232. As the limit segment 2321 disengages, the constraint on the first hinge arm 231 is released, allowing the first hinge arm 231 to rotate clockwise around the hinge rotation axis 233, driving the first reinforcing plate 21 to move upward, and simultaneously guiding the entire engine hood assembly 10 to move upward, realizing the upward movement of the limit groove 2111 relative to the limit block 2311 ( Figure 2 The display shows that the limiting block 2311 is located at the lower end of the limiting groove 2111. Figure 3 The display shows that the limiting block 2311 is located at the upper end of the limiting groove 2111, thereby guiding the entire engine hood assembly 10 to move upward, forming an effective lifting effect (such as...). Figure 3 (As shown). This design ensures that the engine hood assembly 10 can rise rapidly in the instant of a potential collision, providing additional buffer space for possible pedestrian head impacts and significantly enhancing pedestrian protection.

[0077] In the above embodiment, the downward movement of the limiting block 2311 along the limiting groove 2111 further ensures the guidance and stability of the engine hood assembly 10 during the lifting process, avoids possible shaking or irregular movement during the lifting process, and ensures the smoothness and reliability of the engine hood lifting.

[0078] Furthermore, the lifting assembly 20 also includes an elastic element 25, which is arranged circumferentially along the hinge rotation axis 233. One end of the elastic element 25 extends toward the first reinforcing plate 21, and the other end of the elastic element 25 extends toward the second hinge arm body 2320.

[0079] Combination Figure 4As shown, in this embodiment, when the second hinge arm 232 is in the first working position, one end of the elastic element 25 contacts the first reinforcing plate 21, and the other end of the elastic element 25 contacts the second hinge arm body 2320. When the lifter 24 is not working, the elastic element 25 keeps the first reinforcing plate 21 and the second hinge arm 232 away from each other, further preventing the second hinge arm 232 from coming out of the through hole 221 when encountering bumpy conditions, thus strengthening the limiting effect achieved by the second hinge arm 232 and the second reinforcing plate 22. When the lifter 24 lifts, the second hinge arm 232 moves upward, causing the elastic element 25 to be compressed. After the second hinge arm 232 moves from the first working position to the second working position, the elastic element 25 is no longer located between the first reinforcing plate 21 and the second hinge arm 232.

[0080] This structural design, when the lifter 24 is not in operation, causes the first reinforcing plate 21 and the second hinge arm 232 to move away from each other, effectively preventing the second hinge arm 232 from dislodging from the through hole 221 when the vehicle encounters bumpy conditions. This significantly enhances the limiting effect between the second hinge arm 232 and the second reinforcing plate 22, improving the stability and reliability of the active hood system in complex environments. When the lifter 24 operates and lifts the hood, the second hinge arm 232 moves upward and dislodles from the through hole 221 of the second reinforcing plate 22, causing the elastic element 25 to be compressed. After the second hinge arm 232 moves from the first working position to the second working position, the elastic element 25 is no longer located between the first reinforcing plate 21 and the second hinge arm 232, thereby enabling the hinge 23 to rotate freely during the hood lifting process, ensuring that the engine hood assembly 10 is smoothly lifted to the predetermined height, thus completing the collision protection for pedestrians. Of course, the way the elastic element 25 is set is not limited to the above description. In other embodiments, different types of elastic mechanisms, such as springs or elastic rubber, can also be used. The alternative can also achieve the limiting of the hinge 23 and the free rotation of the engine hood assembly 10 during the lifting process, ensuring the realization of the technical solution.

[0081] Furthermore, the maximum lifting height of the lifting assembly 20 located at the front end of the hood assembly 10 is L1, and the maximum lifting height of the lifting assembly 20 located at the rear end of the hood assembly 10 is L2, where L2 > L1. This design ensures the stability of the hood assembly 10 during the lifting process. By setting the rear lifting height to be greater than the front lifting height, the center of gravity shifts rearward during the lifting process, effectively balancing the front overturning moment that may be caused by the lifting action, preventing the hood assembly 10 from tilting upwards during lifting, and ensuring the smoothness and consistency of the lifting action. At the moment of collision between a pedestrian and a vehicle, the rear and front ends of the hood respond simultaneously, forming a gentle slope shape, thus providing sufficient buffer space even in high-speed collisions and reducing injury to pedestrians.

[0082] In another embodiment of this application, combined with Figure 1 As shown, the lifting assembly 20 located at the rear end of the engine hood assembly 10 also includes a gas strut 26, which is fixed to the hinge 23 by a ball joint. When the engine hood assembly 10 is lifted, the gas strut 26 can provide additional support force to ensure the smooth lifting of the engine hood assembly 10 and avoid engine hood deformation or instability caused by uneven force during the lifting process.

[0083] In another embodiment of this application, a vehicle is also provided, including an active engine hood assembly, which is the active engine hood assembly in the above embodiments.

[0084] Specifically, the active hood assembly includes a hood assembly 10 and a lifting assembly 20. The hood assembly 10 is used to connect to the vehicle body and is movably disposed relative to the vehicle body. One end of the lifting assembly 20 is connected to the hood assembly 10, and the other end of the lifting assembly 20 is used to connect to the vehicle body. The lifting assembly 20 is movably disposed relative to the vehicle body along the height direction of the vehicle body. There are two sets of lifting assemblies 20, one set located at the front end of the hood assembly 10 and the other set located at the rear end of the hood assembly 10. Both sets of lifting assemblies 20 move along the height direction of the vehicle body, thereby moving the hood assembly 10 relative to the vehicle body.

[0085] By integrating a front and rear dual-lift active hood, the vehicle can respond more accurately and provide additional safety in the event of a potential pedestrian collision. This design not only enhances head protection for adult pedestrians, but more importantly, it significantly improves protection against head impacts in children, especially when the child's head impact zone is located at the front of the hood. The movable nature of the two lifting components 20 along the vehicle's height ensures that the hood can rise rapidly upon impact, forming an effective buffer zone and reducing the likelihood of pedestrians' heads directly contacting the hard components of the engine compartment, thereby reducing the risk of injury or death. Compared to a traditional rear-lift active hood, this vehicle's active hood assembly provides a more balanced mechanical distribution, reducing localized deformation of the hood during the lifting process. This ensures that the vehicle's appearance remains undamaged while also improving the overall system's stability and durability.

[0086] In another embodiment of this application, a vehicle control method is also provided for controlling the vehicle in the above embodiments. The control method includes:

[0087] Step S1: Obtain radar information and camera information;

[0088] Step S2: Based on radar and camera information, determine collision risk information;

[0089] Step S3: In response to the collision risk information meeting the preset conditions, control the two sets of lifting components to perform lifting operations simultaneously.

[0090] In step S1, the vehicle's surrounding environment is continuously monitored using a front millimeter-wave radar and camera installed on the vehicle, including pedestrians and obstacles in front. The millimeter-wave radar can provide information about distance, speed, and angle, while the camera can provide more detailed image information, such as pedestrian identification and obstacle types.

[0091] In step S2, the information obtained from radar and cameras is comprehensively analyzed, and a preset algorithm or model is applied to assess the probability and risk level of a collision. For example, multiple parameters such as the relative speed and distance between the pedestrian and the vehicle, the pedestrian's direction of movement, and the vehicle's driving status are considered to determine whether a pedestrian collision event is about to occur.

[0092] In step S3, when the collision risk information assessed by the system meets the preset triggering conditions, i.e., when there is a high probability of pedestrian collision, the control unit immediately sends a command to the two lifting assemblies (front lifting assembly and rear lifting assembly). The front lifting assembly located at the front of the hood and the rear lifting assembly located at the rear of the hood start synchronously. The lifter of the front lifting assembly extends along the height direction of the vehicle, pushing the first hinge arm connected to it to rotate, thereby causing the first reinforcing plate and the front end of the hood on it to tilt upwards. At the same time, the lifter of the rear lifting assembly also extends along the height direction of the vehicle body, pushing the first hinge arm connected to it to rotate, thereby causing the first reinforcing plate and the rear end of the hood on it to lift synchronously. The maximum lifting height L1 of the front end of the hood is less than the maximum lifting height L2 of the rear end. This design allows the hood to form a more reasonable tilt angle when lifted, providing sufficient buffer space for pedestrian head collisions while ensuring that the lifting action is not too violent, maintaining the structural integrity and aesthetics of the vehicle.

[0093] Based on steps S1-S3, real-time monitoring data from radar and cameras are effectively integrated. Through precise collision risk assessment, a synchronized lifting action of the front and rear dual lifts is triggered, providing safer head protection for pedestrians. This method is particularly suitable for ultra-luxury vehicles, not only improving pedestrian protection but also maintaining the integrity and uniqueness of the vehicle design.

[0094] Combination Figure 5As shown, in another embodiment of this application, when a pedestrian collision risk is detected, rapid lifting can be achieved through two sets of lifting components 20 located at the front and rear ends of the hood assembly 10. The lifting components 20 move along the height direction of the vehicle body. When the collision risk information meets preset conditions, the control system will activate the lifting components 20, causing them to push the hood assembly 10 vertically, increasing the buffer distance between the pedestrian's head and the rigid components of the engine compartment. Through the synergistic effect of the front and rear dual lifting, not only is the protection effect for pedestrians improved, but also the stability of the hood assembly 10 during the lifting process is enhanced due to the more uniform distribution of lifting force, avoiding the risk of local warping or damage, and improving the reliability and safety of the overall system.

[0095] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0096] 1) By setting lifting components 20 at the front and rear ends of the engine hood assembly 10, the engine hood assembly 10 is lifted at two points simultaneously, providing a more comprehensive buffer zone for pedestrian head collisions, effectively reducing head injury values ​​and enhancing pedestrian protection capabilities for all vehicle models.

[0097] 2) The locking assembly 30 remains locked during the lifting process, ensuring the stability and safety of the engine hood, avoiding abnormal or unstable states of the engine hood assembly 10 caused by lifting, and enhancing the overall coordination and safety of the system.

[0098] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0099] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this application.

[0100] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0101] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An active engine hood assembly, characterized in that, include: Engine hood assembly (10), the engine hood assembly (10) being connected to the vehicle body, the engine hood assembly (10) being movably disposed relative to the vehicle body; A lifting assembly (20) is provided, one end of which is connected to the engine hood assembly (10), and the other end of which is connected to the vehicle body. The lifting assembly (20) is movably disposed relative to the vehicle body along the height direction of the vehicle body. There are two sets of lifting assemblies (20), one set of which is located at the front end of the engine hood assembly (10), and the other set of which is located at the rear end of the engine hood assembly (10). Both sets of lifting components (20) move along the height direction of the vehicle body, causing the engine hood assembly (10) to move relative to the vehicle body.

2. The active engine hood assembly according to claim 1, characterized in that, The active engine hood assembly also includes: A locking assembly (30) is provided, one end of which is connected to the engine hood assembly (10) via the lifting assembly (20), and the other end of which is used to connect to the vehicle body. The locking assembly (30) has a locking state that connects the engine hood assembly (10) to the vehicle body, and a releasing state that disconnects the engine hood assembly (10) from the vehicle body. There are two sets of locking assemblies (30), and the two sets of locking assemblies (30) are provided in a one-to-one correspondence with the two sets of lifting assemblies (20). When both sets of locking components (30) are in the locked state, both sets of lifting components (20) move along the height direction of the vehicle body, causing the engine hood assembly (10) to move relative to the vehicle body.

3. The active engine hood assembly according to claim 2, characterized in that, The lifting assembly (20) includes: A hinge (23), wherein the locking assembly (30) is connected to a first end of the hinge (23), and a second end of the hinge (23) is rotatably disposed relative to the first end of the hinge (23); A lifter (24) is located below the second end of the hinge (23). The first end of the lifter (24) is used to connect with the vehicle body, and the second end of the lifter (24) is telescopically provided along the height direction of the vehicle body. When the locking assembly (30) is in the locked state, the lifter (24) moves along the height direction of the vehicle body toward the second end of the hinge (23), and the engine hood assembly (10) moves along the height direction of the vehicle body via the hinge (23).

4. The active engine hood assembly according to claim 3, characterized in that, The lifting assembly (20) includes: The first reinforcing plate (21) is connected to the engine hood assembly (10), and the first reinforcing plate (21) is connected to the third end of the hinge (23), the third end of the hinge (23) being located between the first end of the hinge (23) and the second end of the hinge (23); The second reinforcing plate (22) is located below the first reinforcing plate (21). The first end of the hinge (23) is connected to the locking assembly (30) through the second reinforcing plate (22). The second reinforcing plate (22) has a through hole (221). The second end of the hinge (23) has a first working position located inside the through hole (221) and a second working position located outside the through hole (221). When the locking assembly (30) is in the locked state, the lifter (24) moves along the height direction of the vehicle body toward the second end of the hinge (23), causing the second end of the hinge (23) to move from the first working position to the second working position, and causing the first reinforcing plate (21) to move the engine hood assembly (10) along the height direction of the vehicle body.

5. The active engine hood assembly according to claim 4, characterized in that, The first reinforcing plate (21) includes: The first reinforcing plate body (210) is connected to the engine hood assembly (10); An extension segment (211) is provided, one end of which is connected to the first reinforcing plate body (210), and the other end of which extends away from the engine hood assembly (10) along the height direction of the vehicle body. The hinge (23) is movably connected to the extension segment (211).

6. The active engine hood assembly according to claim 5, characterized in that, The hinge (23) includes: A hinge rotation axis (233) is connected to the first reinforcing plate (21), and the hinge rotation axis (233) is movably disposed relative to the first reinforcing plate (21); A first hinge arm (231) is connected at one end to the second reinforcing plate (22), and at the second end of the first hinge arm (231) is connected to the extension section (211) via the hinge rotation shaft (233). The first hinge arm (231) is rotatably disposed relative to the first reinforcing plate (21) and relative to the second reinforcing plate (22). The second hinge arm (232) is connected to the extension section (211) via the hinge rotation axis (233). The second hinge arm (232) is rotatably disposed relative to the extension section (211). The second hinge arm (232) has a first working position and a second working position. When the locking assembly (30) is in the locked state, the lifter (24) extends along the height direction of the vehicle body, and the second end of the lifter (24) drives the second hinge arm (232) to move from the first working position to the second working position, thereby driving the first reinforcing plate (21) to drive the engine hood assembly (10) to move along the height direction of the vehicle body.

7. The active engine hood assembly according to claim 6, characterized in that, The second hinge arm (232) includes: The second hinge arm body (2320) is connected to the extension section (211) via the hinge rotation axis (233); A limiting segment (2321) is connected to the second hinge arm body (2320). A portion of the limiting segment (2321) extends along the thickness direction of the second hinge arm body (2320), and another portion of the limiting segment (2321) extends along the length direction of the second hinge arm body (2320). The limiting segment (2321) has a first working position and a second working position.

8. The active engine hood assembly according to claim 7, characterized in that, The limiting segment (2321) includes: The first limiting segment (23211) has a first end connected to the second hinge arm body (2320), and the second end of the first limiting segment (23211) extends along the thickness direction of the second hinge arm body (2320). The second limiting segment (23212) has its first end connected to the second end of the first limiting segment (23211), and the second end of the second limiting segment (23212) extends along the length direction of the second hinge arm body (2320). When the limiting segment (2321) is in the first working position, the first limiting segment (23211) is located inside the through hole (221).

9. The active engine hood assembly according to any one of claims 6 to 8, characterized in that, The extension section (211) has a limiting groove (2111), the length of which is arranged along the height direction of the vehicle body. The first hinge arm (231) has a limiting block (2311), which is located in the limiting groove (2111) and is movably arranged along the length direction of the limiting groove (2111).

10. The active engine hood assembly according to claim 7, characterized in that, The lifting assembly (20) also includes: An elastic element (25) is arranged circumferentially along the hinge rotation axis (233), with one end of the elastic element (25) extending toward the first reinforcing plate (21) and the other end of the elastic element (25) extending toward the second hinge arm body (2320).

11. The active engine hood assembly according to claim 1, characterized in that, The maximum lifting height of the lifting assembly (20) located at the front end of the engine hood assembly (10) is L1, and the maximum lifting height of the lifting assembly (20) located at the rear end of the engine hood assembly (10) is L2, wherein L2>L1.

12. A vehicle comprising an active engine hood assembly, characterized in that, The active engine hood assembly is the active engine hood assembly according to any one of claims 1 to 11.

13. A vehicle control method for controlling the vehicle of claim 12, characterized in that, The control method includes: Acquire radar and camera information; Based on the radar information and the camera information, collision risk information is determined; In response to the collision risk information meeting preset conditions, the two sets of lifting components are controlled to perform lifting operations simultaneously.

Images