Automobile bonnet with deformation zone and method for protecting a vulnerable object

Abstract

The application discloses a kind of automobile front cover with deformation area and vulnerable object protection method, it is related to vehicle sheet metal part technical field, front cover is arranged in the front of cab, the structure of front cover includes: first cover component, first cover component covers vehicle body in a way that can open and close a unit room;Display unit, the display surface of display unit is configured in the first surface of first cover component, and the first surface is the side surface opposite to the side close to the unit room;Image transmission unit, image transmission unit transmits the picture of monitoring area in the front of front cover to display unit;Wherein, the observation area of windshield in front of cab includes display unit, and monitoring area at least includes the area in front of automobile front cover, compared with prior art, the disclosed scheme in the application can improve the safety of automobile driving.

Description

Technical Field

[0001] This invention relates to the field of vehicle sheet metal technology, and in particular to a method for protecting a car hood with a deformation area and vulnerable objects. Background Technology

[0002] The hood of a vehicle covers the engine and serves to protect and shield it. However, in the current technology, the hood can obstruct the driver's view, creating a blind spot. The driver may be unable to accurately judge the situation in the blind spot, which could lead to a traffic accident. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method for protecting a car hood with a deformation area and vulnerable objects. Compared with the prior art, the car hood disclosed in this invention can improve the safety of car driving.

[0004] This invention is achieved through the following technical solution: This invention discloses a car hood with a deformation area, the hood being arranged at the front of the driver's cab, and the structure of the hood includes:

[0005] The first cover component covers the vehicle body in a manner that allows a unit compartment to be opened and closed;

[0006] The display unit has its display surface disposed on the first surface of the first cover member, which is the side surface facing away from the side closest to the unit chamber.

[0007] The image transmission unit transmits the image from the monitoring area at the front of the front cover to the display unit.

[0008] The observation area of ​​the windshield in front of the driver's cab includes a display unit, and the monitoring area includes at least the area directly in front of the hood of the vehicle.

[0009] The first cover component described above can be made of metal or carbon fiber. It can completely or partially cover the unit compartment. The first cover component can deform to absorb some energy. This invention does not impose further limitations. The first cover component in this invention can be arranged with the side closer to the driver's cab higher and the side farther from the driver's cab lower to improve vehicle safety and reduce the severity of pedestrian collision injuries. The low position of the front area (bumper area) allows the point of impact to drop to the lower limb area of ​​most pedestrians. Furthermore, after being hit, a pedestrian will naturally lie on the first cover component. After the rear part of the first cover component (the end closer to the driver's cab) is raised, the gap between the first cover component and the unit compartment increases, allowing the first cover component to undergo elastic deformation, which can better absorb energy through deformation and reduce pedestrian injuries.

[0010] Preferably, the display unit is configured to be light-transmitting, and the first cover member and the display unit are respectively arranged with light-transmitting areas; wherein, light can be projected from the side near the first surface through the display unit to the side of the first cover member opposite to the first surface; when the driver is driving the car, the car hood may accidentally pop up due to external force or other principles and cover the windshield. At this time, the windshield is also covered by the display unit. In this scenario, the display unit can turn off the display of the image, and the driver can observe the environment in front of the vehicle through the display unit in order to make an emergency response.

[0011] Preferably, a first opening is arranged on the first cover member, and a display unit is arranged at the position of the first opening, the display area of ​​the display unit covering the first opening;

[0012] The display unit includes a frame and a display panel embedded in the frame, with the display area of ​​the display panel arranged at an angle toward the driver's cab.

[0013] A gap is formed between the display panel and the inner cavity of the frame. A through hole is provided on the first surface of the frame to allow the gap between the display panel and the inner cavity of the frame to communicate with the outside. The first surface is the side of the frame away from the driver's cab.

[0014] The first opening on the first cover member in this invention is used to prevent the front cover from accidentally lifting up as described above. The driver can observe the area in front of the vehicle through the display unit and the first opening. The height of the first cover member gradually decreases from the height of the driver's cab to the height of the bumper. The planar arrangement is not convenient for the driver to observe the image on the display panel. In order to better observe the display unit through the driver's cab, the display area of ​​the display panel is tilted towards the driver's cab for better image observation. The back of the display panel generates more heat. The heat generated is conducted to the gap area between the display panel and the inner cavity of the frame, and is conducted to the outside air through the through hole, forming effective heat dissipation. In one scenario, the vehicle body generates airflow during driving. The through hole is opened in the direction of the vehicle and has an air outlet on the side. The airflow enters the gap through the through hole and forms a heat dissipation channel with the air outlet. The heat generated by the display panel is dissipated at high speed through the airflow.

[0015] Preferably, the first opening is covered with a transparent cover plate, and a heat radiation component is arranged on the side of the cover plate closest to the unit chamber, the emissivity of the heat radiation component being greater than 0.9;

[0016] A heat-conducting component is arranged in the gap between the display panel and the inner cavity of the frame. One end of the heat-conducting component contacts the back of the display panel, and a part of the heat-conducting component extends to the outside of the frame. The heat-conducting component extending to the outside contacts the first cover component.

[0017] Preferably, the deformation area is within the range of the first cover member, and a plurality of deformation members protruding relative to the first cover member are arranged within the deformation area;

[0018] The deformable component is made of a flexible material and has a friction coefficient greater than 0.9; the image display surface of the display unit is not covered by the deformable component, and the friction coefficient of the image display surface of the display unit is less than 0.3.

[0019] In this invention, a portion of the first cover component is equipped with a deformation member to increase friction. This increased friction prevents pedestrians from violently rolling or sliding on the first cover component during a collision, thus preventing them from further impacting other objects, such as rearview mirrors, car frames, or glass. The phase change member is also made of a flexible material. When a person impacts it, the flexible deformation member deforms, buffering the impact force to protect the pedestrian. To prevent damage to the display unit during friction, the coefficient of friction of the image display surface of the display unit is set to be less than a certain value. By reducing the coefficient of friction of the image display surface of the display unit, damage to the display unit due to friction is prevented.

[0020] Preferably, the front cover further includes:

[0021] Two second cover members are connected by hinges at their two ends in the second direction of the first cover member;

[0022] A lifting member is configured to change the angle between the first cover member and the second cover member by lifting the second cover member;

[0023] The second cover component is lifted in the direction away from the unit compartment. Two rearview mirrors are arranged on both sides of the vehicle body, and the second direction is parallel to the line connecting the two rearview mirrors.

[0024] The hood of this invention also has an active deformation state. In normal driving conditions, the second hood component, together with the first hood component, covers the vehicle body, thus providing protection for the front of the vehicle. When the vehicle collides with a pedestrian, the second hood component switches to a second state to protect the pedestrian. In the second state, the specific switching process can be that the lifting component changes its length to affect the angle between the second hood component and the first hood component. By lengthening the lifting component, it supports the second hood component, causing it to tilt relative to the first hood component. The first hood component then wraps around the edge area of ​​the second hood component, forming a buffer area through the combination of the first and second hood components. The second hood component has a blocking function, preventing pedestrians from rolling off the sides of the hood to the ground after impact, thus avoiding secondary injuries.

[0025] Preferably, the second cover member includes an expanded state and a contracted state;

[0026] In the retracted state, both the first cover component and the second cover component cover the vehicle body;

[0027] In the extended state, the second cover component does not cover the vehicle body;

[0028] In the expanded state, the length of the second cover member along the second direction is greater than the length of the second cover member along the second direction in the contracted state.

[0029] Switching the state of the second cover component can improve the protective effect. The buffer area formed by the combination of the first and second cover components is not very effective due to the short length of the second cover component, and pedestrians may still roll over the second cover component and fall to the ground. Therefore, when the second cover component is raised relative to the first cover component, the second cover component is in an expanded state. By switching the shape of the second cover component, the height of the buffer area is extended, thereby improving the protective effect. Pedestrians are less likely to roll from the protected area to the ground, and pedestrians are effectively protected.

[0030] Preferably, the second cover component includes:

[0031] The first plate is arranged to be connected to the first cover component via a hinge, and a storage groove is arranged at the end of the first plate away from the first cover component.

[0032] The elastic element is arranged in the storage slot;

[0033] The movable part is arranged in the storage slot, and the elastic element applies a thrust to one end of the movable part;

[0034] The second plate is connected to the end of the movable part that is away from the elastic part.

[0035] A limiting unit is connected to the first plate and the second plate;

[0036] The limiting unit includes a limiting state and a separation state. In the limiting state, the gap between the first plate and the second plate is smaller than the gap between the first plate and the second plate in the separation state.

[0037] For the aforementioned second cover component, the length of the second cover component can be changed by switching the state between the first plate and the second plate. The elastic element in this invention can be a spring, and the movable element can be columnar or plate-shaped. As for the limiting unit, it can be limited by an electromagnet, or the first plate can be provided with a limiting port, and the second plate can be equipped with a lock. The lock limits the first plate and the second plate through the limiting port. When the front of the vehicle body is impacted beyond the threshold, the lock is disengaged from the limiting port, and then the first plate and the second plate are separated under the action of the elastic element.

[0038] Preferably, the second cover component further includes a protective member, which is arranged on the side away from the unit chamber, and one end of the protective member is connected to the first plate and the other end is connected to the second plate;

[0039] The protective components are made of a stretchable material.

[0040] In the second cover component of this invention, when it is in the extended state, there is a gap between the first plate and the second plate. This application also provides a protective component at the gap between the first and second plates. The stretchable material of the protective component can be an elastic material, for example, a flexible base layer. The flexible base layer is connected to the first and second plates through a connecting layer. When the second cover component is in the contracted state, the gap between the first and second plates is small, and the flexible base layer is not stretched. When the second cover component is in the extended state, the gap between the first and second plates increases, and the flexible base layer is stretched. The flexible base layer can be made of rubber or leather. The protective component can block the gap between the first and second plates to prevent foreign objects from entering, and can also cover the gap between the first and second plates. When in the extended state, if a pedestrian is struck at the location of the second cover component, their head will be protected by the protective component, preventing the edges of the plates from hitting the pedestrian's head at the gap location when the first and second plates are in the extended state.

[0041] This invention also discloses a method for protecting vulnerable objects, applied to the aforementioned automobile hood. A pressure sensor is arranged at the front of the vehicle body, and a processor unit is arranged to identify the image of the monitored area. When the pressure sensor detects that the collision pressure is greater than a first threshold, and a target object is identified in the monitored area, the lifting member changes the angle between the first cover member and the second cover member in a direction away from the unit chamber. At the same time, the second cover member switches from a retracted state to an expanded state.

[0042] In the vulnerable object protection method of this invention, the image information transmitted by the image transmission unit is identified. When a human-shaped target is identified in the image transmitted by the image transmission unit in front of the vehicle body, and the pressure sensor detects that the collision pressure exceeds the threshold, the angle between the first cover component and the second cover component is adjusted, and the second cover component switches from a contracted state to an expanded state to form a buffer area to protect pedestrians. This reduces the probability that pedestrians hit by the front cover will roll off the front cover or rush out from the edge area of ​​the front cover. It can also reduce the impact on the pillar rearview mirror on the vehicle body to a certain extent, reduce the injury to pedestrians, and reduce the probability of false triggering.

[0043] This invention discloses a method for protecting a car hood with a deformation area and vulnerable objects, which, compared with the prior art:

[0044] The first cover component of this invention can be made of metal or carbon fiber. It can completely or partially cover the unit compartment. The first cover component can deform to absorb some energy. This invention does not impose further details. The first cover component can be arranged with a higher position closer to the driver's cab and a lower position further away from the driver's cab to improve vehicle safety and reduce the severity of pedestrian collision injuries. The low position of the front area (bumper area) allows the point of impact to drop to the lower limb area of ​​most pedestrians. Furthermore, after being hit, a pedestrian will naturally lie on the first cover component. As the rear part of the first cover component (the end closer to the driver's cab) is raised, the gap between the first cover component and the unit compartment increases. The first cover component can undergo elastic deformation, which can better absorb energy through deformation and reduce pedestrian injuries. Attached Figure Description

[0045] Figure 1 A schematic diagram of a car using the front cover of this invention;

[0046] Figure 2 This is a schematic diagram of another scenario involving a car using the front cover of the present invention;

[0047] Figure 3 This is a schematic diagram of the exterior of a car using the front cover of the present invention in one embodiment.

[0048] Figure 4 This is a schematic diagram of the display unit in one embodiment;

[0049] Figure 5 for Figure 4 A schematic diagram of the pixel group structure in the embodiment;

[0050] Figure 6 This is a schematic diagram of the front cover structure in one embodiment;

[0051] Figure 7 This is a partial top view of a car using the front cover of the present invention in one embodiment;

[0052] Figure 8 This is a structural schematic diagram of the front cover in one state in one embodiment;

[0053] Figure 9 In one embodiment, the front cover is different from Figure 8 A schematic diagram of the state structure;

[0054] Figure 10 This is a schematic diagram of the retracted state of the second cover member in one embodiment;

[0055] Figure 11 This is a schematic diagram of the expanded state of the second cover member in one embodiment;

[0056] Figure 12 This is a schematic diagram showing the states of the first plate and the second plate in one embodiment. Implementation

[0057] The following description, provided with reference to the accompanying drawings, is intended to aid in a thorough understanding of the various exemplary embodiments of the present disclosure as defined by the claims and their equivalents. This description includes numerous details to aid understanding, but these details will be considered exemplary only. Accordingly, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. Furthermore, for clarity and brevity, descriptions of well-known functions and structures may be omitted.

[0058] In the following, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0059] It will be understood that when an element or layer is referred to as being “on,” “connected to,” or “linked to” another element or layer, it may be directly on, directly connected to, or linked to that other element or layer, or one or more intermediate elements or layers may be present. When an element is referred to as being “directly on,” “directly connected to,” or “directly linked to” another element or layer, no intermediate elements or layers are present. For example, when a first element is described as being linked to or connected to a second element, the first element may be directly linked to or connected to the second element, or the first element may be indirectly linked to or connected to the second element via one or more intermediate elements. The same reference numerals refer to the same elements. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. Furthermore, when describing embodiments of the invention, the use of “may” refers to “one or more embodiments of the invention.” When expressions such as “at least one of…” follow a list of elements, they modify the entire list of elements and not individual elements in the list. Furthermore, the term “exemplary” is intended to refer to an example or illustration. As used in this article, the terms “use,” “using,” and “used” can be considered synonyms with the terms “utilize,” “utilizing,” and “utilized,” respectively.

[0060] It will be understood that while the terms first, second, third, etc., may be used herein to describe various elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited to these terms. These terms are used to distinguish one element, component, region, layer, or segment from another element, component, region, layer, or segment. Therefore, without departing from the teachings of the exemplary embodiments, the first element, first component, first region, first layer, or first segment discussed below may be referred to as a second element, second component, second region, second layer, or second segment. In the accompanying drawings, for clarity of illustration, the dimensions of various elements, layers, etc., may be exaggerated.

[0061] For ease of description, spatial relative terms such as “beneath,” “below,” “lower,” “above,” and “upper” are used herein to describe the relationship between one element or feature and another element (or feature) or feature (or feature) as shown in the accompanying drawings. It will be understood that, in addition to the orientations depicted in the drawings, the spatial relative terms are intended to also include different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as “below” or “below” other elements or features will be oriented as “above” or “above” other elements or features. Therefore, the term “below” can include both orientations of above and below. The device may be otherwise oriented (e.g., rotated 90 degrees or in other orientations), and the spatial relative descriptive terms used herein should be interpreted accordingly.

[0062] The terminology used herein is for the purpose of describing specific exemplary embodiments of the invention only and is not intended to limit the described exemplary embodiments of the invention. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “an” are intended to include the plural forms as well. It will also be understood that, when used in this specification, the terms “include,” “including,” “comprise,” and / or “comprising” designate the presence of a feature, integral, step, operation, element, and / or component, but do not preclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof.

[0063] This invention is achieved through the following technical solution: This invention discloses a car hood with a deformation area, the hood being arranged at the front of the driver's cab, and the structure of the hood includes:

[0064] First cover component 1, the first cover component 1 covers the vehicle body in a manner that allows a unit compartment to be opened and closed;

[0065] Display unit 2, the display surface of display unit 2 is disposed on the first surface of the first cover member 1, the first surface is the side surface facing away from the side close to the unit chamber;

[0066] The image transmission unit transmits the image of the monitoring area at the front of the front cover to the display unit 2.

[0067] The observation area of ​​the windshield in front of the driver's cab includes the display unit 2, and the monitoring area includes at least the area directly in front of the hood of the vehicle.

[0068] The car hood in this invention is used to seal the unit compartment, which can be a simple storage space for placing items, or it can be a compartment for the car's power unit, for placing battery packs, engines, etc.

[0069] The first cover component 1 described above can be made of metal or carbon fiber. It can completely or partially cover the unit compartment. The first cover component 1 can deform to absorb some energy. This invention does not impose further limitations. The first cover component 1 in this invention can be arranged with a higher position closer to the driver's cab and a lower position further away from the driver's cab to improve vehicle safety and reduce the severity of pedestrian collision injuries. The low position of the front area (bumper area) allows the point of impact to drop to the lower limb area of ​​most pedestrians. In addition, after being hit, the pedestrian will lie down on the first cover component 1. After the rear part of the first cover component (the end closer to the driver's cab) is raised, the gap between the first cover component and the unit compartment becomes larger. The first cover component can undergo elastic deformation, which can better absorb energy through deformation and reduce pedestrian injuries.

[0070] One implementation example Figure 1 As shown, if the car's hood is too high or too long, the driver cannot predict whether the front bumper will hit a person or object while the car is in motion. Figure 1 In some vehicles, pedestrians are in the driver's blind spot due to the obstruction of the car's hood, posing a safety hazard. Some vehicles are equipped with monitoring devices to monitor the area in front of the car, and the driver can observe the environment ahead through a display in the cockpit. While driving, the driver generally needs to observe the road conditions through the windshield, but the display in the cockpit is not in the driver's field of vision, posing a safety hazard to the driver when observing the display in the cockpit.

[0071] In one embodiment, the present invention discloses a display unit 2. The type of display unit 2 in the present invention can be an OLED display, an LCD display, a Mini LED display, or a Micro LED. The present invention does not limit it to a single type. The display unit 2 can be covered with a transparent material cover for waterproofing and impact protection. The display unit 2 in the present invention is arranged on the surface of the first cover member 1. When the driver observes the display unit 2 through the windshield of the car, the display unit 2 can monitor the area in front of the vehicle. The driver can observe the blind spot through the display unit 2 without being distracted or having to turn his head to observe the display in the cockpit.

[0072] In one embodiment, for the display unit 2 in the present invention, it may also be provided with a partial storage area. Specifically, a protection cavity for storing the display unit 2 may be provided, and a power unit may be provided to drive the display unit 2 to move from the protection cavity to the target area in a manner of moving up and down or in the front-back, left-right directions. The target area is located on the surface of the first cover member 1, and the display unit 2 is protected by the protection cavity.

[0073] In one embodiment, the display unit 2 is configured to be light-penetrable, and the first cover member 1 and the display unit 2 are correspondingly provided with light-transmitting areas; wherein, light can be projected from the side close to the first surface through the display unit 2 to the side opposite to the first surface of the first cover member 1; the display unit 2 can be penetrated by light, and an object on the back of the display unit can be observed through the front side of the display unit 2. The principle of light transmission is not specifically limited. For example, Figure 4 as shown, the display unit 2 may include a transparent substrate, on which a circuit layer is arranged, and the lighting or extinguishing of a plurality of pixel groups arranged in an array is controlled through the circuit layer. Figure 4 The dotted area in the upper left side is the pixel group, as Figure 5 shown, the pixel group includes red pixels (R), green pixels (G), blue pixels (B), and white pixels (W) arranged in a "field" shape. The pixel group also includes transparent pixels, which do not emit light and are arranged on the sides of the pixels arranged in a "field". The area of the transparent pixels is larger than the sum of the areas of all the pixels arranged in a "field". Through the above-mentioned transparent pixels, the driver can observe the back through the front side of the display unit 2, while the red pixels (R), green pixels (G), blue pixels (B), and white pixels (W) serve as sub-pixels and can display the picture by self-luminescence. Specifically, the interior of the unit chamber can be arranged or coated with black, so that on a pure color background, the picture displayed by the display unit 2 is clearer.

[0074] In one scenario, as Figure 2 shown, during the process of a driver driving a car, due to external force or other reasons, the front cover of the car accidentally pops up and covers the front windshield. At this time, the front windshield is also covered by the display unit 2. At this time, the display unit 2 can display an image, and the driver can observe the environment in front of the vehicle body through the display unit 2 to make an emergency response and avoid obstacles and stop the vehicle in a safe area.

[0075] For example, Figure 3 as shown, a first opening is arranged on the first cover member 1, and the display unit 2 is arranged at the position of the first opening, and the display area of the display unit 2 covers the first opening.

[0076] The display unit 2 includes a frame 21 and a display panel 23 embedded in the frame. The display area of ​​the display panel 23 is arranged at an angle toward the driver's cab.

[0077] A gap is formed between the display panel 23 and the inner cavity of the frame 21. A through hole 22 is provided on the first surface of the frame to allow the gap between the display panel and the inner cavity of the frame to communicate with the outside. The first surface is the side of the frame 21 away from the driver's cab.

[0078] Regarding the first opening on the first cover member 1 in this invention, it is used to prevent the front cover from accidentally tilting up as described above. The driver can observe the area in front of the vehicle body through the display unit 2 and the first opening. The height of the first cover member 1 gradually decreases from the height of the driver's cab to the bumper. The planar arrangement is not convenient for the driver to observe the image on the display panel 23. In order to better observe the display unit 2 through the driver's cab, the display area of ​​the display panel 23 is tilted towards the driver's cab for a better viewing angle. The tilted arrangement means that the height of the side of the display unit 2 away from the driver's cab is greater than the height of the side of the display unit 2 closer to the driver's cab, so that the display panel 23 tilts up towards the driver's cab. The specific tilt angle is... The angle between the display panel and the base surface can be 18° to 20°, with the road surface as the reference surface. This application does not limit this angle. The display panel 23 generally has a driver circuit board and other components placed on the back, which causes the back to heat up significantly. The heat generated is conducted to the gap area between the display panel 23 and the inner cavity of the frame 21, and is conducted to the outside air through the through hole 22, forming effective heat dissipation. In one scenario, the vehicle body generates airflow during driving, and the through hole 22 is opened in the direction of the vehicle's movement, with an air outlet on the side. The airflow enters the gap through the through hole 22, forming a heat dissipation channel with the air outlet. The heat generated by the display panel 23 is dissipated at high speed through the airflow.

[0079] According to some embodiments disclosed in this invention, a transparent cover plate is provided at the first opening position, and a heat radiation component is arranged on the side of the cover plate near the unit chamber, the emissivity of the heat radiation component being greater than 0.9.

[0080] A heat-conducting component is arranged in the gap between the display panel 23 and the inner cavity of the frame 21. One end of the heat-conducting component contacts the back of the display panel 23, and a part of the heat-conducting component extends to the outside of the frame 21. The heat-conducting component extending to the outside contacts the first cover component 1.

[0081] In one scenario, the unit is a car engine compartment, where the engine generates significant heat. The invention includes a transparent cover at the first opening, which does not obstruct the driver's view. In the event of an unexpected hood lift-up, the driver can observe the display panel 23 through the cover. The cover also contains a heat-radiating component. Emissivity represents the ratio of an object's thermal radiation level to that of an ideal blackbody. Since the heat-radiating component has an emissivity greater than 0.9, the heat generated by the engine can be transferred to the inner cavity via radiation (e.g., direct transfer). Multiple heat-conducting components are also arranged within the inner cavity, and these components are relatively long, extending to the outside of the frame 21. During vehicle operation, airflow promptly reduces the surface temperature of the heat-conducting components. The heat-conducting components can be made of a transparent graphene layer. By dissipating heat from the inner cavity through these components, the heat dissipation of the inner cavity is achieved, thus cooling both the display panel and the car engine.

[0082] One implementation example Figure 6 As shown, the deformation area is within the first cover member 1, and multiple deformation members 11 protruding relative to the first cover member 1 are arranged within the deformation area;

[0083] The deformable component is made of a flexible material and is configured with a friction coefficient greater than 0.9; the image display surface of the display unit 2 is not covered by the deformable component, and the friction coefficient of the image display surface of the display unit 2 is less than 0.3.

[0084] In the first cover component of this invention, a portion of its area is equipped with a deformation component 1 to increase friction. By increasing friction, the pedestrian is prevented from violently rolling or sliding on the first cover component during a collision, thus preventing further impact with other objects, such as rearview mirrors, car frames, and glass. The phase change component is also made of a flexible material. When a person impacts it, the flexible material deformation component 11 deforms, buffering the impact force to protect the pedestrian. To prevent damage to the display unit 2 during friction, the friction coefficient of the image display surface of the display unit 2 is configured to be less than 0.3. By reducing the friction coefficient of the image display surface of the display unit 2, damage to the display unit 2 due to friction is prevented.

[0085] The aforementioned deformable component 11 can be made of rubber. The rubber deformable component has a storage space containing a sticky liquid. The deformable component 11 can also have holes on its top. When the vehicle hits a pedestrian and the pedestrian applies an impact force to the deformable component, the deformable component 11 breaks or the storage space is squeezed, and the sticky liquid flows out of the holes. The sticky liquid adheres to the pedestrian's surface, reducing the probability of the pedestrian detaching from the first cover component 1 and reducing the probability of secondary injury.

[0086] In one embodiment, the front cover further includes: two second cover members 3, the two ends of the second cover members 3 in a second direction of the first cover member 1 are connected by hinges; and a lifting member 31, the lifting member 31 being configured to change the angle between the first cover member 1 and the second cover member 3 by lifting the second cover members 3.

[0087] The second cover component 3 is lifted in a direction away from the unit compartment. Two rearview mirrors are arranged on the two sides of the vehicle body, and the second direction is parallel to the line connecting the two rearview mirrors.

[0088] like Figure 8 and Figure 9 As shown, the front cover of the present invention also has an active deformation state. In the normal driving state, the second cover component 3, together with the first cover component 1, covers the vehicle body. At this time, the second cover component 3 plays a protective role, protecting the front of the vehicle body. When the vehicle body hits a pedestrian, in order to protect the pedestrian, the second cover component 3 switches to a second state. In the second state, the specific switching process can be that the lifting component 31 affects the angle between the second cover component 3 and the first cover component 1 by changing its own length. By increasing the size of the lifting component 31, it supports the second cover component, causing the second cover component 3 to tilt relative to the first cover component 1. The first cover component 1 covers the edge area relative to the second cover component 3. The combination of the first cover component 1 and the second cover component forms a buffer area. The second cover component 3 has a blocking function. When a pedestrian hits the front cover, it is not easy for the pedestrian to roll off the two sides of the hood to the ground, avoiding the pedestrian falling to the ground and causing secondary injury.

[0089] With existing car hoods, there's a certain probability that a pedestrian, after being hit, will slide off the side of the hood. Figure 7 As shown, pedestrians' heads are prone to hitting car rearview mirrors. Figure 7 Area a is a danger zone for this invention. This area includes hard components such as rearview mirrors. For the first cover component 1 and the second cover component 3 of this invention, the buffer area formed by the first cover component 1 and the raised second cover component avoids the rearview mirror and prevents the pedestrian's head from colliding with the rearview mirror. The area directly in front of the buffer area is the car windshield. The windshield is somewhat brittle. If the impact force is too large when a pedestrian hits the windshield, the windshield is easy to break. Therefore, the windshield buffers the impact force to a certain extent and protects the pedestrian's head compared to the rearview mirror.

[0090] One implementation example Figure 10 and Figure 11 As shown, the second cover member includes an expanded state and a retracted state;

[0091] In the retracted state, both the first cover component 1 and the second cover component 3 cover the vehicle body;

[0092] In the extended state, the second cover component 3 does not cover the vehicle body;

[0093] In the extended state, the length of the second cover member 3 along the second direction is greater than the length of the second cover member 3 along the second direction in the contracted state.

[0094] Switching the state of the second cover component 3 can improve the protective effect. The buffer area formed by the combination of the first cover component 1 and the second cover component is not very effective due to the short length of the second cover component. Pedestrians may still roll over the second cover component 3 and fall to the ground. Therefore, when the second cover component 3 is raised relative to the first cover component 1, the second cover component 3 is in an expanded state. By switching the shape of the second cover component, the height of the buffer area is extended, thereby improving the protective effect. Pedestrians are less likely to roll from the protective area to the ground, and pedestrians are effectively protected.

[0095] Preferably, the second cover member 3 includes:

[0096] The first plate 31 is arranged to be connected to the first cover member 1 via a hinge, and a storage groove is arranged at the end of the first plate 31 facing away from the first cover member.

[0097] Elastic element 32 is arranged in the storage slot;

[0098] Movable part 33 is arranged in the storage slot, and elastic part 32 applies a thrust to one end of movable part 33;

[0099] The second plate 34 is connected to the end of the movable part 33 that is away from the elastic part 32.

[0100] A limiting unit is connected to the first plate 31 and the second plate 34.

[0101] The limiting unit includes a limiting state and a separation state. In the limiting state, the gap between the first plate 32 and the second plate 34 is smaller than the gap between the first plate 32 and the second plate 34 in the separation state.

[0102] Regarding the second cover component 3 mentioned above, the length of the second cover component 3 can be changed by switching the state between the first plate 31 and the second plate 34. The elastic element 32 in this invention can be a spring, and the movable element 33 can be columnar or plate-shaped. As for the limiting unit, it can be limited by an electromagnet, or the first plate 31 can be provided with a limiting port, and the second plate 34 can be equipped with a lock. The lock limits the first plate 31 and the second plate 34 through the limiting port. When the front of the vehicle body is impacted beyond the threshold, the lock is disengaged from the limiting port, and then the first plate 31 and the second plate 34 are separated under the action of the elastic element 32. The above solution is one embodiment of this application and is not the only one.

[0103] In one embodiment, the second cover member 3 further includes a protective member 35, which is arranged on the side away from the unit chamber, and one end of the protective member 35 is connected to the first plate member 31 and the other end is connected to the second plate member 32; wherein, the protective member 35 is made of a stretchable material.

[0104] In the second cover member 3 of this invention, when it is in the extended state, there is a gap between the first plate 31 and the second plate 32. This application also provides a protective member 35 at the gap between the first plate 32 and the second plate 34. The stretchable material of the protective member 35 can be an elastic material, for example, a flexible base layer. The flexible base layer is connected to the first plate 31 and the second plate through a connecting layer. When the second cover member 3 is in the contracted state, the gap between the first plate 32 and the second plate 34 is small, and the flexible base layer is not stretched. When the second cover member 3 is in the extended state… When the first plate 32 and the second plate 34 are in the extended state, the gap between them increases and the flexible base layer is stretched. The flexible base layer can be made of rubber or leather. As for the protective component, it can block the gap between the first plate 32 and the second plate 34 to prevent foreign objects from entering, and it can also cover the gap between the first plate 32 and the second plate 34. When in the extended state, if a pedestrian is hit at the position of the second cover component 3, his head will be protected by the protective component to prevent the edge of the plate from hitting the pedestrian's head at the gap position of the first plate 32 and the second plate 34 in the extended state.

[0105] For example Figure 12As shown, in one embodiment, for the first plate 32 and the second plate 34, the two ends of an elastic strip member are fixed to the end of the second plate 34 away from the first plate 32. When the second cover member is not raised, the strip member is attached to the surface of the front cover. When a pedestrian is hit and the second cover member is raised, the height of the strip member increases with the change of the angle of the second cover member, blocking one side of the buffer area. At this time, the strip member is located at the front of the windshield. When the pedestrian slides towards the windshield, the elastic strip member buffers the force to reduce the impact of the pedestrian on the windshield or prevent the pedestrian from contacting the windshield.

[0106] The present invention also discloses a method for protecting vulnerable objects, applied to the aforementioned car hood. A pressure sensor is arranged at the front of the vehicle body, and a processor unit is arranged to identify the image of the monitoring area. When the pressure sensor detects that the collision pressure is greater than a first threshold and the monitoring area identifies a target object, the lifting member 31 changes the angle between the first cover member 1 and the second cover member 3 in a direction away from the unit chamber, and at the same time, the second cover member switches from a contracted state to an expanded state.

[0107] In the vulnerable object protection method of the present invention, the image information transmitted by the image transmission unit is identified. When the image transmitted by the image transmission unit is identified as having a human-shaped target in front of the vehicle body, and the pressure sensor simultaneously detects that the collision pressure exceeds the threshold, the angle between the first cover member 1 and the second cover member 3 is adjusted, and the second cover member switches from a contracted state to an expanded state to form a buffer area to protect pedestrians. This reduces the probability that pedestrians hit by the front cover will roll off the front cover or rush out from the edge area of ​​the front cover. It can also reduce the impact on the pillar rearview mirror on the vehicle body to a certain extent, reduce the injury to pedestrians, and reduce the probability of false triggering.

[0108] In summary, the first cover component 1 of this invention can be made of metal or carbon fiber. It can completely or partially cover the unit compartment. The first cover component 1 can deform to absorb some energy. This invention does not impose further detailed limitations. The first cover component 1 can be arranged with a higher position closer to the driver's cab and a lower position further away from the driver's cab to improve vehicle safety and reduce the severity of pedestrian collision injuries. The low position of the front area (bumper area) allows the point of impact to drop to the lower limb area of ​​most pedestrians. Furthermore, after being hit, a pedestrian will naturally lie on the first cover component 1. After the rear part of the first cover component (the end closer to the driver's cab) is raised, the gap between the first cover component and the unit compartment increases, allowing the first cover component to undergo elastic deformation, which can better absorb energy through deformation and reduce pedestrian injuries.

[0109] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0110] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A car hood with a deformation region, characterized in that, The front cover is located at the front of the cab, and the structure of the front cover includes: The first cover component (1) covers the vehicle body in a manner that allows a unit compartment to be opened and closed; The display unit (2) has its display surface disposed on the first surface of the first cover member (1), which is the side surface facing away from the side closest to the unit chamber. Image transmission unit, which transmits the image of the monitoring area at the front of the front cover to the display unit (2). The observation area of ​​the windshield in front of the driver's cab includes a display unit (2), and the monitoring area includes at least the area directly in front of the hood of the vehicle; The front cover also includes: Two second cover members (3) are connected by hinges at their two ends in the second direction of the first cover member (1); A lifting member (31) is configured to change the angle between the first cover member (1) and the second cover member (3) by lifting the second cover member (3); Among them, the direction of the second cover component (3) is away from the unit room, and two rearview mirrors are arranged on the two sides of the vehicle body. The second direction is parallel to the line connecting the two rearview mirrors.

2. A car hood with a deformation region as described in claim 1, characterized in that, The display unit (2) is configured to be light-transmitting, and the first cover member (1) and the display unit (2) are respectively arranged with light-transmitting areas; In this process, light can be projected from the side closest to the first surface through the display unit (2) to the side of the first cover member (1) opposite to the first surface.

3. A car hood with a deformation region as described in claim 2, characterized in that, The first cover member (1) has a first opening, and a display unit (2) is arranged at the position of the first opening. The display area of ​​the display unit (2) covers the first opening. The display unit (2) includes a frame (21) and a display panel (23) embedded in the frame. The display area of ​​the display panel (23) is arranged at an angle toward the driver's cab. A gap is formed between the display panel (23) and the inner cavity of the frame (21). A through hole (22) is provided on the first surface of the frame so that the gap between the display panel and the inner cavity of the frame can communicate with the outside. The first surface is the side of the frame (21) away from the driver's cab.

4. A car hood with a deformation region as described in claim 3, characterized in that, The first opening is covered with a transparent cover plate, and a heat radiation component is arranged on the side of the cover plate near the unit chamber. The emissivity of the heat radiation component is greater than 0.

9. A heat-conducting component is arranged in the gap between the display panel (23) and the inner cavity of the frame (21). One end of the heat-conducting component contacts the back of the display panel (23), and a part of the heat-conducting component extends to the outside of the frame (21). The heat-conducting component extending to the outside contacts the first cover component (1).

5. A car hood with a deformation region as described in claim 1, characterized in that, The deformation area is within the range of the first cover member (1), and a plurality of deformation members (11) protruding relative to the first cover member (1) are arranged within the deformation area. The deformable component is made of a flexible material and is configured with a friction coefficient greater than 0.9; the image display surface of the display unit (2) is not covered by the deformable component, and the friction coefficient of the image display surface of the display unit (2) is less than 0.

3.

6. A car hood with a deformation region as described in claim 5, characterized in that, The second cover member includes an expanded state and a retracted state; In the retracted state, both the first cover member (1) and the second cover member (3) cover the vehicle body; In the extended state, the second cover member (3) does not cover the vehicle body; In the extended state, the length of the second cover member (3) along the second direction is greater than the length of the second cover member (3) along the second direction in the contracted state.

7. A car hood with a deformation region as described in claim 6, characterized in that, The second cover member (3) includes: The first plate (31) is arranged to be connected to the first cover member (1) by a hinge, and a storage groove is arranged at the end of the first plate (31) away from the first cover member. An elastic element (32) is arranged in the receiving groove; The movable part (33) is arranged in the storage slot, and the elastic member (32) applies a thrust to one end of the movable part (33); The second plate (34) is connected to the end of the movable member (33) away from the elastic member (32); A limiting unit is connected to the first plate (31) and the second plate (34); The limiting unit includes a limiting state and a separation state. In the limiting state, the gap between the first plate (32) and the second plate (34) is smaller than the gap between the first plate (32) and the second plate (34) in the separation state.

8. A car hood with a deformation region as described in claim 7, characterized in that, The second cover component (3) also includes a protective component (35), which is arranged on the side away from the unit room, and one end of the protective component (35) is connected to the first plate (31) and the other end is connected to the second plate (32). The protective component (35) is made of a stretchable material.

9. A method for protecting vulnerable objects, characterized in that, The vehicle hood described in any one of claims 6 to 8 is provided with a pressure sensor and a processor unit for identifying the image of the monitoring area. When the pressure sensor detects that the collision pressure is greater than a first threshold and the monitoring area identifies a target object, the lifting member (31) changes the angle between the first cover member (1) and the second cover member (3) in a direction away from the unit chamber, while the second cover member switches from a contracted state to an expanded state.

Images