Cover, bonnet and vehicle

Abstract

The utility model discloses a kind of cover plate, engine bonnet and vehicle, cover plate includes: first plate body, second plate body and the intermediate layer structure being clamped between first plate body and second plate body, intermediate layer structure includes multiple cell monomer, cell monomer includes: first wallboard, second wallboard, first connecting plate and second connecting plate, the first end of first wallboard and the first end of second wallboard are connected with the two ends of first connecting plate respectively, the second end of first wallboard and the second end of second wallboard are connected with the two ends of second connecting plate respectively, to enclose cavity, first connecting plate has the first recess of recess in the direction of second connecting plate, second connecting plate has the second recess of recess in the direction of first connecting plate. According to the cover plate of the utility model, the stability of energy absorption is good, structural strength is high, weight is lighter, beneficial to the lightweight design of engine bonnet and vehicle, also beneficial to reduce the damage of collision to pedestrian.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a cover plate, an engine hood, and a vehicle. Background Technology

[0002] The pedestrian's head is the most vulnerable part to injury in a collision between a pedestrian and a vehicle, and it is also a major cause of death in traffic accidents. As people's requirements for vehicle safety, comfort, and other performance aspects increase, improving pedestrian protection technology has become increasingly important. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of the present invention is to provide a cover plate that has good energy absorption stability, high structural strength, and light weight, which is beneficial for the lightweight design of engine hoods and vehicles, and also helps to reduce pedestrian injuries in collisions.

[0004] This utility model also proposes an engine cover having the aforementioned cover plate.

[0005] According to a first aspect embodiment of the present invention, the cover plate includes: a first plate body, a second plate body, and an intermediate layer structure sandwiched between the first plate body and the second plate body. The intermediate layer structure includes a plurality of cell units, each cell unit including: a first wall plate, a second wall plate, a first connecting plate, and a second connecting plate. The first wall plate is attached to the first plate body, and the second wall plate is attached to the second plate body. A first end of the first wall plate and a first end of the second wall plate are respectively connected to both ends of the first connecting plate, and a second end of the first wall plate and a second end of the second wall plate are respectively connected to both ends of the second connecting plate to enclose a cavity. The first connecting plate has a first recess recessed in the direction of the second connecting plate, and the second connecting plate has a second recess recessed in the direction of the first connecting plate.

[0006] According to the embodiment of this utility model, the cover plate, through the structural features of the first and second recesses, enables the cell unit to better absorb the impact force and deform, and has good energy absorption stability. Thus, it can better protect pedestrians when they collide with the cover plate, reducing the damage to pedestrians. In addition, by arranging the cell unit with a cavity between the first and second plates, the cell unit can better enhance the structural strength of the first and second plates, thereby improving the overall structural strength of the cover plate. This allows for a better reduction in weight without reducing the structural strength of the cover plate, which is beneficial for reducing the weight of the engine hood and, consequently, the weight of the vehicle, contributing to vehicle lightweighting and carbon reduction.

[0007] In addition, the cover plate according to this utility model may also have the following additional technical features:

[0008] In some embodiments of this utility model, along the direction from the first wall panel to the second wall panel, the first connecting plate includes a first sub-plate and a second sub-plate, the first sub-plate and the second sub-plate are connected at an included angle to define the first recess, wherein the end of the first sub-plate away from the second sub-plate is connected to the first wall panel, and the end of the second sub-plate away from the first wall panel is connected to the second wall panel.

[0009] In some embodiments of this utility model, the included angle α1 between the first sub-plate and the first wall plate satisfies: 40°≤α1≤60°, and / or, the included angle α2 between the second sub-plate and the second wall plate satisfies: 40°≤α2≤60°.

[0010] In some embodiments of this utility model, along the direction from the first wall panel to the second wall panel, the height value H1 of the first sub-panel satisfies: 8mm≤H1≤10mm, and / or the height value H2 of the second sub-panel satisfies: 8mm≤H2≤10mm.

[0011] In some embodiments of this utility model, along the direction from the first wall panel to the second wall panel, the second connecting plate includes a third sub-plate and a fourth sub-plate, the third sub-plate and the fourth sub-plate being connected at an included angle to define the second recess, wherein the end of the third sub-plate away from the fourth sub-plate is connected to the first wall panel, and the end of the fourth sub-plate away from the third sub-plate is connected to the second wall panel.

[0012] In some embodiments of this utility model, the included angle α3 between the third sub-plate and the first wall plate satisfies: 40°≤α3≤60°, and / or the included angle α4 between the fourth sub-plate and the second wall plate satisfies: 40°≤α4≤60°.

[0013] In some embodiments of this utility model, along the direction from the first wall panel to the second wall panel, the height value H3 of the third sub-panel satisfies: 8mm≤H3≤10mm, and / or the height value H4 of the fourth sub-panel satisfies: 8mm≤H4≤10mm.

[0014] In some embodiments of this utility model, there are rounded transitions between the first wall panel and the first connecting plate, between the second wall panel and the first connecting plate, between the first wall panel and the second connecting plate, and between the second wall panel and the second connecting plate.

[0015] In some embodiments of this utility model, the width of the first wall panel, the second wall panel, the first connecting plate and the second connecting plate is S, wherein the width S satisfies: 8mm≤S≤10mm.

[0016] In some embodiments of this utility model, the intermediate layer structure includes at least one cell layer, the cell layer includes multiple cell units, and the multiple cell units are arranged at intervals or in a row and column arrangement. When the intermediate layer structure has multiple layers, the multiple cell layers are stacked along the direction from the first wall panel to the second wall panel.

[0017] In some embodiments of this utility model, in the direction from the first wall panel to the second wall panel, the cell unit and the first plate body are connected by adhesive, and the cell unit and the second plate body are connected by adhesive. The first wall panel that is attached to the first plate body and the second wall panel that is attached to the second plate body both have grooves that are recessed toward the cavity.

[0018] In some embodiments of this utility model, along the direction from the first connecting plate to the second connecting plate, the groove of the first wall plate is located in the middle of the first wall plate, and the groove of the second wall plate is located in the middle of the second wall plate.

[0019] In some embodiments of this utility model, along the direction from the first connecting plate to the second connecting plate, the widths of the first wall plate and the second wall plate are W1 and W2, respectively, and along the direction from the first wall plate to the second wall plate, the heights of the first connecting plate and the second connecting plate are H01 and H02, respectively, wherein H01 = H02 < W1 = W2.

[0020] In some embodiments of this utility model, the wall thickness t1 of the first wall panel, the wall thickness t2 of the second wall panel, the wall thickness t3 of the first connecting plate, and the wall thickness t4 of the second connecting plate satisfy the following: 0.5mm≤t1≤1mm; 0.5mm≤t2≤1mm; 0.5mm≤t3≤1mm; 0.5mm≤t4≤1mm.

[0021] In some embodiments of this utility model, the cell monomer is an integrally molded part.

[0022] This utility model also proposes an engine cover.

[0023] According to a second aspect embodiment of the present invention, the engine hood includes a cover plate, the first plate being an outer plate and the second plate being an inner plate. When a pedestrian collides with the cover plate, it can better protect the pedestrian and reduce the injury caused by the collision. Furthermore, by arranging cellular monomers with cavities between the first and second plates, the cellular monomers can better enhance the structural strength of the first and second plates, thereby improving the overall structural strength of the cover plate. This allows for a better reduction in weight without reducing the structural strength of the cover plate, thus contributing to a reduction in the weight of the engine hood and consequently, a better reduction in the weight of the vehicle, which is beneficial for vehicle lightweighting and carbon reduction.

[0024] This utility model also proposes a vehicle.

[0025] According to a third aspect of the present invention, the vehicle includes the cover plate of the above embodiments, or the vehicle includes the engine hood of the above embodiments.

[0026] According to the embodiments of this utility model, the vehicle equipped with the cover plate or engine hood described above can achieve a better energy absorption effect, effectively protecting pedestrians and reducing injuries during collisions. Furthermore, by arranging cellular monomers with cavities between the first and second plates, the cellular monomers can enhance the structural strength of the first and second plates, thereby improving the overall structural strength of the cover plate. This allows for a reduction in weight without compromising the structural strength of the cover plate, which in turn helps reduce the weight of the engine hood and ultimately the vehicle, contributing to vehicle lightweighting and carbon reduction.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic diagram of the cover plate according to an embodiment of the present utility model.

[0030] Figure 2 This is a schematic diagram of the structure of a cellular monomer according to an embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the layout of multiple cell monomers according to an embodiment of the present invention.

[0032] Figure label:

[0033] 100. Cover plate;

[0034] 1. First plate; 2. Second plate; 10. Intermediate layer structure;

[0035] 3. Cellular monomer; 30. Cavity; 31. First wall plate; 32. Second wall plate; 311. Groove;

[0036] 33. First connecting plate; 331. First sub-plate; 332. Second sub-plate;

[0037] 34. Second connecting plate; 341. Third sub-plate; 342. Fourth sub-plate;

[0038] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] The following is for reference. Figures 1-3 Description of cover plate 100 according to an embodiment of the present utility model.

[0043] like Figure 1 and Figure 3As shown, the cover plate 100 according to an embodiment of the present invention includes a first plate 1, a second plate 2, and an intermediate layer structure 10 sandwiched between the first plate 1 and the second plate 2. The intermediate layer structure 10 includes a plurality of cell units 3. Each cell unit 3 includes a first wall plate 31, a second wall plate 32, a first connecting plate 33, and a second connecting plate 34. The first end of the first wall plate 31 and the first end of the second wall plate 32 are respectively connected to the two ends of the first connecting plate 33. The second end of the first wall plate 31 and the second end of the second wall plate 32 are respectively connected to the two ends of the second connecting plate 34 to enclose a cavity 30. The first connecting plate 33 has a first recess that is recessed toward the second connecting plate 34, and the second connecting plate 34 has a second recess that is recessed toward the first connecting plate 33.

[0044] like Figure 1 As shown, in the first direction X, the first plate 1, the second plate 2, and the intermediate layer structure 10 are stacked, with the intermediate layer structure 10 located between the first plate 1 and the second plate 2, combined with... Figure 2 The intermediate layer structure 10 includes multiple cell units 3. In the first direction X, each cell unit 3 includes a first wall panel 31 and a second wall panel 32. In the second direction Y, each cell unit 3 includes a first connecting plate 33 and a second connecting plate 34. The first wall panel 31, the second wall panel 32, the first connecting plate 33, and the second connecting plate 34 enclose a cavity 30. The first connecting plate 33 has a first recessed portion that is recessed toward the second connecting plate 34, and the second connecting plate 34 has a second recessed portion that is recessed toward the first connecting plate 33. Thus, when the cover plate 100 is subjected to pressure along the first direction X... After the impact force, firstly, due to the structural features of the first and second recesses, the cell unit 3 can better absorb the impact force and deform, and the deformation direction is parallel to the first wall plate 31 and the second wall plate 32. That is, the first connecting plate 33 deforms along the second direction Y through the first recess, and the second connecting plate 34 deforms along the second direction Y through the second recess. The force acting on the first plate 1 or the second plate 2 can be better transmitted towards the cell unit 3, so that the cell unit 3 can absorb more impact force and has better energy absorption stability.

[0045] For example, the first wall panel 31 is close to the first plate 1, and the second wall panel 32 is close to the second plate 2. The cell unit 3 connected to the first plate 1 is adapted to be attached to the first plate 1 through the first wall panel 31, and the cell unit 3 connected to the second plate 2 is adapted to be attached to the second plate 2 through the second wall panel 32. Since the first wall panel 31 is attached to the first plate 1 and the second wall panel 32 is attached to the second plate 2, the force acting on the first plate 1 or the second plate 2 can be better transmitted to the cell unit 3, thereby enabling the cell unit 3 to absorb more collision force and have better energy absorption stability.

[0046] Exemplarily, the engine hood can be made using cover plate 100. In related technologies, the pedestrian's head is the most vulnerable part to injury in a collision between a pedestrian and a vehicle, and is a major source of death in traffic accidents. As people's requirements for vehicle safety and comfort performance increase, how to improve pedestrian protection technology through the structural design of the engine hood has become increasingly important. Therefore, when the engine hood is made using cover plate 100, when a pedestrian's head collides with the engine hood, the engine hood can deform well, thereby absorbing the impact force between the pedestrian's head and the engine hood, thus reducing the injury caused to the pedestrian by the collision, and thus better protecting pedestrians in traffic accidents and reducing losses in traffic accidents. It is understood that this example uses the application of cover plate 100 to an engine hood as an example, but it should not be regarded as a limitation on the cover plate 100 of this application. The cover plate 100 of this application can be applied to any component that requires buffering force, and this application does not limit it in this regard.

[0047] In addition, it should be noted that by arranging cell monomers 3 with cavities 30 between the first plate 1 and the second plate 2, the cell monomers 3 can effectively enhance the structural strength of the first plate 1 and the second plate 2, thereby improving the overall structural strength of the cover plate 100. Thus, without reducing the structural strength of the cover plate 100, it can better reduce the weight compared to a solid metal cover plate (such as a steel cover plate), which is beneficial to reducing the weight of the engine hood and thus better reducing the weight of the vehicle, which is conducive to the vehicle's lightweighting and carbon reduction.

[0048] According to the embodiment of the present invention, the cover plate 100, through the structural features of the first and second recesses, enables the cell unit 3 to better absorb the impact force and deform, and has good energy absorption stability. Thus, when a pedestrian collides with the cover plate 100, it can better protect the pedestrian and reduce the damage to the pedestrian. In addition, by arranging the cell unit 3 with the cavity 30 between the first plate 1 and the second plate 2, the cell unit 3 can better enhance the structural strength of the first plate 1 and the second plate 2, thereby improving the overall structural strength of the cover plate 100. Thus, without reducing the structural strength of the cover plate 100, it can better reduce the weight, which is conducive to reducing the weight of the engine hood, and thus better reducing the weight of the vehicle, which is conducive to the vehicle's lightweighting and low carbonization.

[0049] In some embodiments of this utility model, along the direction from the first wall panel 31 to the second wall panel 32, the first connecting plate 33 includes a first sub-plate 331 and a second sub-plate 332. The first sub-plate 331 and the second sub-plate 332 are connected at an included angle to define a first recess. The end of the first sub-plate 331 away from the second sub-plate 332 is connected to the first wall panel 31, and the end of the second sub-plate 332 away from the first sub-plate 331 is connected to the second wall panel 32.

[0050] like Figure 1 As shown, the direction from the first wall plate 31 to the second wall plate 32 is the first direction X. When the cell unit 3 is subjected to the collision force from the first plate 1, deformation is more likely to occur at the connection between the first sub-plate 331 and the second sub-plate 332, the connection between the first sub-plate 331 and the first wall plate 31, and the connection between the second sub-plate 332 and the second wall plate 32. As a result, the first sub-plate 331 and the second sub-plate 332 are bent and deformed toward the cavity 30. Furthermore, the deformation of the cell unit 3 does not increase the volume of the cell unit 3 in the second direction Y. Therefore, when the cell unit 3 absorbs the collision deformation, it is not easy to interfere with the adjacent cell unit 3.

[0051] For example, when the first connecting plate 33 is not deformed, the included angle between the first sub-plate 331 and the second sub-plate 332 is an obtuse angle.

[0052] For example, there is a circular arc transition between the first sub-board 331 and the second sub-board 332.

[0053] For example, the first sub-board 331 and the second sub-board 332 can both be straight boards or curved boards with a certain curvature. This application does not impose any restrictions.

[0054] In some embodiments of this utility model, the included angle α1 between the first sub-plate 331 and the first wall plate 31 satisfies: 40°≤α1≤60°, and / or, the included angle α2 between the second sub-plate 332 and the second wall plate 32 satisfies: 40°≤α2≤60°.

[0055] In one example, the included angle α1 between the first sub-plate 331 and the first wall plate 31 satisfies: 40°≤α1≤60°.

[0056] In one example, the included angle α2 between the second sub-plate 332 and the second wall plate 32 satisfies: 40°≤α2≤60°.

[0057] In one example, the included angle α1 between the first sub-plate 331 and the first wall plate 31 satisfies: 40°≤α1≤60°, and the included angle α2 between the second sub-plate 332 and the second wall plate 32 satisfies: 40°≤α2≤60°.

[0058] For example, α1 can be 40°, 41°, 43°, 46°, 48°, 50°, 52°, 54°, 55°, 58°, or 60°.

[0059] For example, α2 can be 40°, 41°, 43°, 46°, 48°, 50°, 52°, 54°, 55°, 58°, or 60°.

[0060] For example, α1 can be equal to α2. Thus, when both the first sub-plate 331 and the second sub-plate 332 are bent and deformed toward the cavity 30, the bending deformation states of the first sub-plate 331 and the second sub-plate 332 are basically the same, for example, the bending deformation angles are the same. Therefore, the cell unit 3 can have better stability.

[0061] In some embodiments of this utility model, along the direction from the first wall panel 31 to the second wall panel 32, the height value H1 of the first sub-panel 331 satisfies: 8mm≤H1≤10mm, and / or the height value H2 of the second sub-panel 332 satisfies: 8mm≤H2≤10mm.

[0062] In one example, the height value H1 of the first sub-board 331 satisfies: 8mm≤H1≤10mm.

[0063] In one example, the height value H2 of the second sub-board 332 satisfies: 8mm≤H2≤10mm.

[0064] In one example, the height value H1 of the first sub-board 331 satisfies: 8mm≤H1≤10mm, and the height value H2 of the second sub-board 332 satisfies: 8mm≤H2≤10mm.

[0065] For example, H1 can be 8mm, 8.2mm, 8.5mm, 8.8mm, 9mm, 9.3mm, 9.5mm, 9.8mm, or 10mm.

[0066] For example, H2 can be 8mm, 8.2mm, 8.5mm, 8.8mm, 9mm, 9.3mm, 9.5mm, 9.8mm, or 10mm.

[0067] For example, H1 = H2. When the first sub-plate 331 and the second sub-plate 332 are both bent and deformed toward the cavity 30, the bending deformation states of the first sub-plate 331 and the second sub-plate 332 are basically the same, for example, the bending deformation angles are the same. Thus, the cell unit 3 can have better stability.

[0068] In some embodiments of this utility model, along the direction from the first wall panel 31 to the second wall panel 32, the second connecting plate 34 includes a third sub-plate 341 and a fourth sub-plate 342, which are connected at an included angle to define the second recess. The end of the third sub-plate 341 away from the fourth sub-plate 342 is connected to the first wall panel 31, and the end of the fourth sub-plate 342 away from the third sub-plate 341 is connected to the second wall panel 32.

[0069] like Figure 1As shown, the direction from the first wall plate 31 to the second wall plate 32 is the first direction X. By making the third sub-plate 341 and the fourth sub-plate 342 both straight plates, when the cell unit 3 is subjected to the collision force from the first plate 1, deformation is more likely to occur at the connection between the third sub-plate 341 and the fourth sub-plate 342, the connection between the third sub-plate 341 and the first wall plate 31, and the connection between the fourth sub-plate 342 and the second wall plate 32. As a result, the third sub-plate 341 and the fourth sub-plate 342 are bent and deformed toward the cavity 30. Furthermore, the deformation of the cell unit 3 does not increase the volume of the cell unit 3 in the second direction Y. Therefore, when the cell unit 3 absorbs the collision deformation, it is not easy to interfere with the adjacent cell unit 3.

[0070] For example, when the second connecting plate 34 is in a non-deformed state, the included angle between the third sub-plate 341 and the fourth sub-plate 342 is an obtuse angle.

[0071] For example, there is a circular arc transition between the third sub-board 341 and the fourth sub-board 342.

[0072] For example, the third sub-board 341 and the fourth sub-board 342 can both be straight boards or curved boards with a certain curvature; this application does not impose any restrictions.

[0073] In some embodiments of this utility model, the included angle α3 between the third sub-plate 341 and the first wall plate 31 satisfies: 40°≤α3≤60°, and / or, the included angle α4 between the fourth sub-plate 342 and the second wall plate 32 satisfies: 40°≤α4≤60°.

[0074] In one example, the included angle α3 between the third sub-plate 341 and the first wall plate 31 satisfies: 40°≤α3≤60°.

[0075] In one example, the included angle α4 between the fourth sub-plate 342 and the second wall plate 32 satisfies: 40°≤α4≤60°.

[0076] In one example, the included angle α3 between the third sub-plate 341 and the first wall plate 31 satisfies: 40°≤α3≤60°, and the included angle α4 between the fourth sub-plate 342 and the second wall plate 32 satisfies: 40°≤α4≤60°.

[0077] For example, α3 can be 40°, 41°, 43°, 46°, 48°, 50°, 52°, 54°, 55°, 58°, or 60°.

[0078] For example, α4 can be 40°, 41°, 43°, 46°, 48°, 50°, 52°, 54°, 55°, 58°, or 60°.

[0079] For example, α3 can be equal to α4. Thus, when the third sub-plate 341 and the fourth sub-plate 342 are both bent and deformed toward the cavity 30, the bending deformation states of the third sub-plate 341 and the fourth sub-plate 342 are basically the same, for example, the bending deformation angles are the same. Therefore, the cell monomer 3 can have better stability.

[0080] In some embodiments of this utility model, along the direction from the first wall panel 31 to the second wall panel 32, the height value H3 of the third sub-panel 341 satisfies: 8mm≤H3≤10mm, and / or the height value H4 of the fourth sub-panel 342 satisfies: 8mm≤H4≤10mm.

[0081] In one example, the height value H3 of the third sub-board 341 satisfies: 8mm≤H3≤10mm.

[0082] In one example, the height value H4 of the fourth sub-board 342 satisfies: 8mm≤H4≤10mm.

[0083] In one example, the height value H3 of the third sub-board 341 satisfies: 8mm≤H3≤10mm, and the height value H4 of the fourth sub-board 342 satisfies: 8mm≤H4≤10mm.

[0084] For example, H3 can be 8mm, 8.2mm, 8.5mm, 8.8mm, 9mm, 9.3mm, 9.5mm, 9.8mm, or 10mm.

[0085] For example, H4 can be 8mm, 8.2mm, 8.5mm, 8.8mm, 9mm, 9.3mm, 9.5mm, 9.8mm, or 10mm.

[0086] For example, H3 = H4. When the third sub-plate 341 and the fourth sub-plate 342 are both bent and deformed toward the cavity 30, the bending deformation states of the third sub-plate 341 and the fourth sub-plate 342 are basically the same, for example, the bending deformation angles are the same. Therefore, the cell monomer 3 can have better stability.

[0087] In some embodiments of this application, there are rounded transitions between the first wall plate 31 and the first connecting plate 33, between the second wall plate 32 and the first connecting plate 33, between the first wall plate 31 and the second connecting plate 34, and between the second wall plate 32 and the second connecting plate 34. Therefore, when the cell unit 3 deforms, the connections between the first wall plate 31 and the first connecting plate 33, between the second wall plate 32 and the first connecting plate 33, between the first wall plate 31 and the second connecting plate 34, and between the second wall plate 32 and the second connecting plate 34 can all deform well and are less prone to damage due to concentrated stress, thereby improving the reliability of the cell unit 3.

[0088] In some embodiments of this application, the width of the first wall panel 31, the second wall panel 32, the first connecting plate 33 and the second connecting plate 34 is S, wherein the width S satisfies: 8mm≤S≤10mm.

[0089] like Figure 2 and Figure 3 As shown, the cell unit 3 is a ring-shaped frame structure. The four side walls of the cell unit 3 are the first wall plate 31, the second wall plate 32, the first connecting plate 33, and the second connecting plate 34, respectively. The cell unit 3 extends along the third direction Z. By ensuring that the width S of the cell unit 3 satisfies: 8mm ≤ S ≤ 10mm, multiple rows of cell units 3 can be arranged in the Z direction. Figure 3 In the example shown, the multiple rows of cell units 3 are spaced apart. Thus, by arranging the positions of the multiple cell units 3, not only can the ability of the cover plate 100 to absorb impact force be improved, but also the number of cell units 3 can be reduced, thereby reducing the weight and cost of the cover plate 100.

[0090] For example, the width S can be 8mm, 8.2mm, 8.5mm, 8.8mm, 9mm, 9.3mm, 9.5mm, 9.8mm, or 10mm.

[0091] In some embodiments of the present invention, the intermediate layer structure 10 includes at least one cell layer. When the intermediate layer structure 10 has multiple layers, the multiple cell layers are stacked along the direction from the first wall panel 31 to the second wall panel 32. The cell layer includes multiple cell units 3, which are spaced apart or at least two cell units 3 abut against each other.

[0092] For example, the cell layer includes a plurality of cell units 3, which are arranged in a row-column manner, including a plurality of cell unit rows arranged along the second direction Y and a plurality of cell unit columns arranged along the third direction Z. For example, two adjacent cell unit rows may abut or be spaced apart, or two adjacent cell unit columns may abut or be spaced apart. This application does not limit this.

[0093] For example, the cell layer includes multiple cell monomers 3, which are arranged at intervals, such as... Figure 3 As shown, in the second direction Y, any two adjacent cell monomers 3 are separated by a gap, and in the third direction Z, any two adjacent cell monomers 3 are separated by a gap.

[0094] For example, the cell layer can be configured with two, three, four, five, or six layers.

[0095] like Figure 1As shown, the cell layer can be set with two layers. In the first direction X, there is a one-to-one correspondence between multiple cell monomers 3 and multiple cell monomers 3. That is, the multiple cell monomers 3 in each cell layer are arranged at intervals. In the first direction X, there is a one-to-one correspondence between multiple cell monomers 3 and multiple cell monomers 3.

[0096] In some embodiments of this utility model, in the direction from the first wall panel 31 to the second wall panel 32, the cell monomer 3 and the first plate body 1, and the cell monomer 3 and the second plate body 2 are all connected by adhesive. The first wall panel 31, which is attached to the first plate body 1, and the second wall panel 32, which is attached to the second plate body 2, both have a groove 311 that is recessed toward the cavity 30.

[0097] In other words, adhesive bonding is simple, convenient, and low-cost. For example, vibration damping adhesive can be used for bonding. Vibration damping adhesive is a material used to reduce vibration and noise, usually made of rubber or other elastic materials, so that the impact force can also be partially absorbed by the vibration damping adhesive. Since both the first wall panel 31 and the second wall panel 32 have grooves 311 that are recessed toward the cavity 30, the vibration damping adhesive can be filled into the grooves 311, which can increase the amount of vibration damping adhesive. On the one hand, it can improve the bonding effect of the vibration damping adhesive, and on the other hand, it can also improve the effect of the vibration damping adhesive in absorbing the impact force.

[0098] For example, the cell layer can have three or more layers. Taking three layers as an example, the cell unit 3 in the middle cell layer can also be provided with a groove 311. That is, in the third direction Z, the middle cell unit 3 can also be connected to the cell units 3 on both sides by adhesive. By providing grooves 311 on both the first wall panel 31 and the second wall panel 32, the connection effect between two adjacent cell units 3 and the ability to absorb collision forces can also be improved.

[0099] In some embodiments of this utility model, along the direction from the first connecting plate 33 to the second connecting plate 34, the groove 311 of the first wall plate 31 is located in the middle of the first wall plate 31, and the groove 311 of the second wall plate 32 is located in the middle of the second wall plate 32.

[0100] In other words, by positioning the groove 311 in the middle, the adhesive can overflow to both sides after being filled in the groove 311, and the connection can be made better. For example, the first wall panel 31 can be firmly bonded to the first plate 1, and the second wall panel 32 can be firmly bonded to the second plate 2, resulting in good stability.

[0101] For example, the width W of the groove 311 satisfies: 3mm ≤ W ≤ 5mm. Satisfying the above condition ensures that the groove 311 is filled with sufficient adhesive.

[0102] In some embodiments of this utility model, along the direction from the first connecting plate 33 to the second connecting plate 34, the widths of the first wall plate 31 and the second wall plate 32 are W1 and W2, respectively, and along the direction from the first wall plate 31 to the second wall plate 32, the heights of the first connecting plate 33 and the second connecting plate 34 are H01 and H02, respectively, wherein H01 = H02 < W1 = W2.

[0103] In other words, in the cell unit 3 constructed by the first wall plate 31, the second wall plate 32, the first connecting plate 33, and the second connecting plate 34, the cross-section of the cell unit 3 is approximately rectangular. The length of the rectangle is formed by the first wall plate 31 and the second wall plate 32, and the width of the rectangle is formed by the first connecting plate 33 and the second connecting plate 34. By satisfying the above conditions, when there is a collision force from the first plate 1 or the second plate 2, the collision force can be better transmitted to the cell unit 3. Furthermore, the cell unit 3 can also absorb the collision force well through the deformation of the first connecting plate 33 and the second connecting plate 34, thereby reducing the damage caused by the collision.

[0104] In some embodiments of this utility model, the wall thickness t1 of the first wall panel 31, the wall thickness t2 of the second wall panel 32, the wall thickness t3 of the first connecting plate 33, and the wall thickness t4 of the second connecting plate 34 satisfy the following: 0.5mm≤t1≤1mm; 0.5mm≤t2≤1mm; 0.5mm≤t3≤1mm; 0.5mm≤t4≤1mm.

[0105] For example, the wall thickness t1 of the first wall panel 31, the wall thickness t2 of the second wall panel 32, the wall thickness t3 of the first connecting plate 33, and the wall thickness t4 of the second connecting plate 34 can be equal or unequal, depending on actual needs.

[0106] By ensuring that the wall thickness t1 of the first wall plate 31, the wall thickness t2 of the second wall plate 32, the wall thickness t3 of the first connecting plate 33, and the wall thickness t4 of the second connecting plate 34 meet the above conditions, the cell monomer 3 can better absorb the impact force.

[0107] For example, t1 can be 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, or 1mm.

[0108] t2 can be 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, or 1mm.

[0109] t3 can be 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, or 1mm.

[0110] t4 can be 0.5mm, 0.55mm, 0.6mm, 0.65mm, 0.7mm, 0.75mm, 0.8mm, 0.85mm, 0.9mm, or 1mm.

[0111] In some embodiments of this utility model, the cell monomer 3 is an integrally molded part.

[0112] In other words, the cellular monomer 3 is a one-piece molded component with a stable structure and no seams, ensuring stable and reliable performance. The material is uniformly distributed and has consistent mechanical properties, avoiding stress concentration and improving energy absorption efficiency.

[0113] In some embodiments of this utility model, the thickness D1 of the first plate 1 satisfies: 0.5mm≤L≤2mm.

[0114] For example, D can be 0.5mm, 0.7mm, 0.9mm, 1.1mm, 1.3mm, 1.5mm, 1.7mm, 1.8mm, 1.9mm, or 2mm.

[0115] For example, the first plate 1 is an integral part formed from steel, aluminum alloy, plastic, carbon fiber composite or glass fiber composite.

[0116] For example, the second wall panel 32 has a first region and a second region, the first region being opposite to the intermediate layer structure 10, and the second region being provided with weight-reducing holes, thereby effectively reducing the weight of the cover plate 100.

[0117] The second area is equipped with weight reduction holes. The number, size and shape of the holes can be adjusted to combine the important collision positions and force transmission paths of the engine hood, making the structure lighter and achieving better pedestrian head protection performance.

[0118] The cross-section of the cell monomer 3 in this application resembles a "plum blossom". Multiple cell monomers are arranged and combined in the first direction X, the second direction Y and the third direction Z to construct a negative Poisson's ratio structure, which can effectively improve the structural performance.

[0119] For example, the second plate is a single-layer solid plate of uniform thickness.

[0120] The cellular monomer 3 of this application can be processed by extrusion molding or 3D printing. Multiple cellular monomers 3 can be welded or bonded together, and this application does not impose any restrictions.

[0121] This utility model also proposes an engine cover having the cover plate 100 of the above embodiments.

[0122] According to an embodiment of the present invention, the engine hood includes a cover plate 100, wherein a first plate 1 is an outer plate and a second plate 2 is an inner plate.

[0123] According to the embodiment of the present invention, the engine hood, by providing the cover plate 100 of the above embodiment, allows the cell unit 3 to better absorb the impact force and deform, and has good energy absorption stability. Thus, when a pedestrian collides with the cover plate 100, it can better protect the pedestrian and reduce the damage to the pedestrian. In addition, by arranging the cell unit 3 with the cavity 30 between the first plate 1 and the second plate 2, the cell unit 3 can better enhance the structural strength of the first plate 1 and the second plate 2, thereby improving the overall structural strength of the cover plate 100. Thus, without reducing the structural strength of the cover plate 100, it can better reduce the weight, which is beneficial to reducing the weight of the engine hood, and thus better reducing the weight of the vehicle, which is beneficial to the vehicle's lightweighting and low carbon emissions.

[0124] The outer panel of the hood forms the external structure of the entire hood, serving aesthetic, barrier, and protective functions. The inner panel of the hood works in conjunction with the outer panel to enhance the structural strength, rigidity, and sealing of the hood, while also providing a foundation for the installation of various accessories. The intermediate layer structure is constructed with a negative Poisson's ratio structure. As a functional layer, the intermediate layer structure forms a sandwich structure with the inner and outer panels of the hood, which can enhance the rigidity and impact resistance of the hood structure, improve the pedestrian protection level of the vehicle, and provide a more comfortable and safer driving experience. Furthermore, the intermediate layer structure is arranged with cellular units 3 with cavities 30, which can effectively reduce weight without reducing the structural strength of the cover 100, thereby helping to reduce the weight of the hood and, consequently, the weight of the vehicle, contributing to vehicle lightweighting and low carbon emissions.

[0125] This utility model also proposes a vehicle having the engine hood described in the above embodiments.

[0126] According to the embodiments of the present invention, the vehicle equipped with the cover plate 100 of the above embodiments or the engine hood of the above embodiments can have a good energy absorption effect, which can better protect pedestrians when they collide with the cover plate 100 and reduce the damage to pedestrians. In addition, by arranging cell monomers 3 with cavities 30 between the first plate 1 and the second plate 2, the cell monomers 3 can better enhance the structural strength of the first plate 1 and the second plate 2, thereby improving the overall structural strength of the cover plate 100. This allows for a better reduction in weight without reducing the structural strength of the cover plate 100, which is beneficial for reducing the weight of the engine hood and thus the weight of the vehicle, which is conducive to the vehicle's lightweighting and low carbon emissions.

[0127] Other components and operations of the cover plate 100 and engine hood according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0128] In the description of this specification, references to terms such as "some embodiments," "optionally," "furthermore," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0129] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cover plate, characterized in that, include: A first plate (1), a second plate (2), and an intermediate layer structure (10) sandwiched between the first plate (1) and the second plate (2), wherein the intermediate layer structure (10) comprises a plurality of cell monomers (3). The cell unit (3) includes: a first wall plate (31), a second wall plate (32), a first connecting plate (33), and a second connecting plate (34). The first end of the first wall plate (31) and the first end of the second wall plate (32) are respectively connected to the two ends of the first connecting plate (33). The second end of the first wall plate (31) and the second end of the second wall plate (32) are respectively connected to the two ends of the second connecting plate (34) to enclose a cavity (30). The first connecting plate (33) has a first recess that is recessed toward the second connecting plate (34), and the second connecting plate (34) has a second recess that is recessed toward the first connecting plate (33).

2. The cover plate according to claim 1, characterized in that, Along the direction from the first wall panel (31) to the second wall panel (32), the first connecting plate (33) includes a first sub-plate (331) and a second sub-plate (332), which are connected at an included angle to define the first recess. The end of the first sub-plate (331) away from the second sub-plate (332) is connected to the first wall panel (31), and the end of the second sub-plate (332) away from the first sub-plate (331) is connected to the second wall panel (32).

3. The cover plate according to claim 2, characterized in that, The included angle α1 between the first sub-plate (331) and the first wall plate (31) satisfies: 40°≤α1≤60°, and / or, The included angle α2 between the second sub-plate (332) and the second wall plate (32) satisfies: 40°≤α2≤60°.

4. The cover plate according to claim 2, characterized in that, Along the direction from the first wall panel (31) to the second wall panel (32), the height value H1 of the first sub-panel (331) satisfies: 8mm≤H1≤10mm, and / or the height value H2 of the second sub-panel (332) satisfies: 8mm≤H2≤10mm.

5. The cover plate according to claim 1, characterized in that, Along the direction from the first wall panel (31) to the second wall panel (32), the second connecting plate (34) includes a third sub-plate (341) and a fourth sub-plate (342), the third sub-plate (341) and the fourth sub-plate (342) being connected at an included angle to define the second recess, wherein the end of the third sub-plate (341) away from the fourth sub-plate (342) is connected to the first wall panel (31), and the end of the fourth sub-plate (342) away from the third sub-plate (341) is connected to the second wall panel (32).

6. The cover plate according to claim 5, characterized in that, The included angle α3 between the third sub-plate (341) and the first wall plate (31) satisfies: 40°≤α3≤60°, and / or the included angle α4 between the fourth sub-plate (342) and the second wall plate (32) satisfies: 40°≤α4≤60°.

7. The cover plate according to claim 5, characterized in that, Along the direction from the first wall panel (31) to the second wall panel (32), the height value H3 of the third sub-panel (341) satisfies: 8mm≤H3≤10mm, and / or the height value H4 of the fourth sub-panel (342) satisfies: 8mm≤H4≤10mm.

8. The cover plate according to claim 1, characterized in that, The first wall panel (31) and the first connecting plate (33), the second wall panel (32) and the first connecting plate (33), the first wall panel (31) and the second connecting plate (34), and the second wall panel (32) and the second connecting plate (34) all have rounded transitions.

9. The cover plate according to claim 1, characterized in that, The width of the first wall panel (31), the second wall panel (32), the first connecting plate (33) and the second connecting plate (34) is S, wherein the width S satisfies: 8mm≤S≤10mm.

10. The cover plate according to claim 1, characterized in that, The intermediate layer structure (10) includes at least one cell layer. When there are multiple cell layers, the multiple cell layers are stacked along the direction from the first wall panel (31) to the second wall panel (32). The cell layer includes multiple cell units (3). The multiple cell units (3) in the cell layer are arranged at intervals, or at least two cell units (3) abut against each other.

11. The cover plate according to claim 1, characterized in that, In the direction from the first wall panel (31) to the second wall panel (32), the cell unit (3) is bonded to the first plate (1) and to the second plate (2) by adhesive bonding. The first wall panel (31) which is attached to the first plate (1) and the second wall panel (32) which is attached to the second plate (2) both have grooves (311) that are recessed toward the cavity (30).

12. The cover plate according to claim 1, characterized in that, Along the direction from the first connecting plate (33) to the second connecting plate (34), the widths of the first wall plate (31) and the second wall plate (32) are W1 and W2, respectively, and the heights of the first connecting plate (33) and the second connecting plate (34) are H01 and H02, respectively, where H01 = H02 < W1 = W2.

13. The cover plate according to claim 1, characterized in that, The wall thickness t1 of the first wall panel (31), the wall thickness t2 of the second wall panel (32), the wall thickness t3 of the first connecting plate (33), and the wall thickness t4 of the second connecting plate (34) satisfy the following: 0.5mm≤t1≤1mm; 0.5mm≤t2≤1mm; 0.5mm≤t3≤1mm; 0.5mm≤t4≤1mm.

14. An engine hood, characterized in that, include: The cover plate (100) according to any one of claims 1-13, wherein the first plate body (1) is an outer plate and the second plate body (2) is an inner plate.

15. A vehicle, characterized in that, The vehicle includes the cover (100) of any one of claims 1-13, or the vehicle includes the engine hood of claim 14.

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