Hoods and carriers

Abstract

The application relates to the technical field of carriers, and discloses a hood and a carrier. The hood comprises a cover body and a sandwiched reinforcing structure. The cover body has an inner cavity, the sandwiched reinforcing structure is arranged in the inner cavity of the cover body, and the cross section of the sandwiched reinforcing structure comprises a plurality of polygonal structures. The sandwiched reinforcing structure comprises a plurality of module units, and the sandwiched reinforcing structure is formed by splicing the plurality of module units. According to the application, the sandwiched reinforcing structure in the cover body is arranged as a plurality of module units spliced to form a single module unit which can be disassembled and replaced relative to the sandwiched reinforcing structure. When part of the sandwiched reinforcing structure is damaged, the corresponding module unit of the damaged area is replaced, so that the whole sandwiched reinforcing structure does not need to be replaced integrally, thereby reducing the maintenance cost.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a hood and a vehicle. Background Technology

[0002] The honeycomb composite panel cover forms an inner cavity between the inner and outer panels of the cover, and a sandwich reinforcement structure is arranged in the inner cavity. Compared with the traditional metal stamping cover, the honeycomb composite panel cover has the advantages of light weight and high energy absorption efficiency.

[0003] However, in existing honeycomb composite panel hood designs, the sandwich reinforcement structure is usually a one-piece molded structure. Although this structure can effectively absorb energy in the event of a collision, it often requires the entire sandwich reinforcement structure to be replaced after it is damaged, which increases maintenance costs and restricts the widespread application of honeycomb composite panel hoods. Utility Model Content

[0004] In view of this, this application provides a hood and carrier to solve the problem that when the existing sandwich reinforcement structure is damaged, the entire sandwich reinforcement structure needs to be replaced, which leads to increased maintenance costs.

[0005] In a first aspect, this application provides a machine cover, including a cover body and a sandwich reinforcement structure. The cover body has an inner cavity, and the sandwich reinforcement structure is disposed within the inner cavity of the cover body. The cross-section of the sandwich reinforcement structure includes multiple polygonal structures. The sandwich reinforcement structure includes multiple modular units, and the sandwich reinforcement structure is formed by splicing together the multiple modular units.

[0006] Beneficial effects: By configuring the sandwich reinforcement structure within the enclosure as a series of modular units, individual modules can be disassembled and replaced relative to the overall reinforcement structure. When a portion of the sandwich reinforcement structure is damaged, replacing the module corresponding to the damaged area eliminates the need to replace the entire structure, thus reducing maintenance costs.

[0007] In one optional embodiment, a mesh-structured partition skeleton is provided in the inner cavity of the cover, the partition skeleton having multiple receiving spaces, and each of the module units is correspondingly disposed in each of the receiving spaces.

[0008] Beneficial effects: The partition frame divides the inner cavity of the enclosure, confining each modular unit within its own space. This ensures the independence of each modular unit, facilitating disassembly and replacement of individual units and improving the maintenance efficiency of the reinforced sandwich structure. Furthermore, the partition frame provides support for the modular units, preventing displacement during vehicle movement or impacts and enhancing the stability of the modular unit installation.

[0009] In one alternative embodiment, a connection structure is provided between the partition frame and the module unit, and the module unit is detachably connected to the partition frame through the connection structure.

[0010] Beneficial effects: By setting up a connection structure, it is easy to separate individual module units from the overall mezzanine reinforcement structure, improving the efficiency of module unit replacement and maintenance. Furthermore, the connection structure connects the module units to the partition frame, thereby enhancing the stability of the module unit installation.

[0011] In one alternative embodiment, the connection structure includes a groove disposed on the side wall of the receiving space, and the edge of the module unit is engaged within the groove.

[0012] Beneficial effects: The method of setting the edge of the module unit in the groove makes the connection between the module unit and the partition frame simple and facilitates the separation of the module unit from the partition frame during maintenance and replacement.

[0013] In one optional embodiment, the partition frame includes a plurality of first partition beams and a plurality of second partition beams, the plurality of first partition beams being parallel to each other, the plurality of second partition beams being parallel to each other, and the first partition beams and the second partition beams intersecting each other, wherein the first partition beams are I-beams; and / or, the second partition beams are I-beams.

[0014] Beneficial effects: The intersecting arrangement of the first and second partition beams forms a stable grid structure, which can effectively distribute and transfer loads. Furthermore, the use of I-beams for both the first and second partition beams reduces their own weight while ensuring structural strength, thereby reducing the overall weight of the hood.

[0015] In one alternative embodiment, a skin is provided on one or both sides of the module unit along the thickness direction of the cover, and an adhesive layer is provided between the skin and the module unit.

[0016] Beneficial effects: A skin is provided on one or both sides of the module unit. The skin can cover and protect the module unit. The adhesive layer fills the gap between the skin and the surface of the module unit, improving the sealing effect of the connection between the two. In addition, the adhesive layer can also transfer the impact load on the hood to the module unit, ensuring energy transfer efficiency.

[0017] In one alternative embodiment, the module unit is provided with straps that are tied to the outside of the module unit.

[0018] Beneficial effects: The binding straps on the module unit prevent secondary splashing of the module unit when it is deformed due to a collision with the cover, thus improving the safety of the module unit in use.

[0019] In an alternative embodiment, the enclosure further includes a panel whose shape is adapted to the shape of the inner cavity, the panel having opposing first and second sides, the first side of the panel being connected to the inner wall of the enclosure, and the second side of the panel being connected to the partition frame.

[0020] Beneficial effects: The enclosure panels are connected to the inner wall of the cover to form a stable support structure. At the same time, the enclosure panels are connected to the partition frame, and the modular units can be detachably installed on the partition frame, which can ensure the overall stability of the sandwich reinforcement structure.

[0021] In one optional embodiment, the module unit includes a first layer structure and a second layer structure arranged sequentially along the thickness direction of the cover. The first layer structure includes a plurality of arrayed first polygonal structures, and the second layer structure includes a plurality of arrayed second polygonal structures. The plurality of first polygonal structures and the plurality of second polygonal structures are arranged correspondingly. The wall thickness of the first polygonal structure is t1, and the wall thickness of the second polygonal structure is t2. Wherein, t1 < t2, or t1 > t2.

[0022] Beneficial effects: By setting the module unit as a double-layer structure with different wall thicknesses, the first layer and the second layer work together to form a collapsible structure. The collapsible structure can guide and control the collision deformation direction of the module unit, thereby improving the collision energy absorption effect of the module unit.

[0023] Secondly, this application provides a vehicle including the hood described in any of the above claims.

[0024] Beneficial effects: The cover is mounted on the vehicle and, after a collision with a pedestrian, uses the sandwich reinforcement structure to buffer and absorb energy to protect the pedestrian. At the same time, if a local area of ​​the sandwich reinforcement structure is damaged, the sandwich reinforcement structure can be repaired by replacing the corresponding module unit in the damaged area, so that the entire sandwich reinforcement structure does not need to be replaced, thus reducing maintenance costs. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram showing the positional relationship between the inner plate and the partition frame in an embodiment of the present utility model;

[0027] Figure 2This is an exploded structural diagram showing the positional relationship between the outer panel and the surrounding panel in an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the cover according to an embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram showing the connection relationship between the sandwich structure and the first partition beam in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the connection structure according to an embodiment of the present utility model;

[0031] Figure 6 This is an exploded structural diagram of a module unit according to an embodiment of the present utility model;

[0032] Figure 7 This is a schematic diagram showing the positional relationship between the first layer structure and the second layer structure in an embodiment of this utility model;

[0033] Figure 8 This is a schematic diagram showing the connection relationship between the first polygonal structure and the second polygonal structure in an embodiment of this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] Z represents the thickness direction; 100 represents the inner cavity.

[0036] 1. Cover body; 11. Outer panel; 12. Inner panel;

[0037] 2. Sandwich reinforcement structure; 21. Modular unit; 211. First layer structure; 2111. First polygonal structure; 212. Second layer structure; 2121. Second polygonal structure; 22. Skin; 23. Adhesive layer;

[0038] 3. Dividing frame; 31. Accommodation space; 32. First dividing beam; 33. Second dividing beam;

[0039] 4. Connection structure;

[0040] 5. Straps;

[0041] 6. Enclosure panel; 61. First side; 62. Second side. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] The following is combined Figures 1 to 8 This describes an embodiment of the present application.

[0044] According to an embodiment of this application, in a first aspect, a machine cover is provided, including a cover body 1 and a sandwich reinforcement structure 2. The cover body 1 has an inner cavity 100, and the sandwich reinforcement structure 2 is disposed within the inner cavity 100 of the cover body 1. The cross-section of the sandwich reinforcement structure 2 includes multiple polygonal structures. The sandwich reinforcement structure 2 includes multiple modular units 21, which are spliced ​​together to form the sandwich reinforcement structure 2.

[0045] Those skilled in the art will understand that the cross-section of the sandwich reinforcement structure 2 is the horizontal cross-section of the sandwich reinforcement structure 2.

[0046] In this way, by setting the cross-section of the sandwich reinforcement structure 2 as multiple polygonal structures, the sandwich reinforcement structure 2 achieves extremely high compressive, bending, and shear strength with less material, significantly improving the overall load-bearing strength of the hood while reducing the overall weight of the hood. Moreover, when subjected to impact or compression, the polygonal structure can dissipate a large amount of energy through the buckling, folding, or fracture of the cell walls, providing the hood with impact resistance and energy absorption performance, protecting pedestrian safety.

[0047] In this embodiment, the polygonal structure of the sandwich reinforcement structure 2 can be a regular hexagon, a square, or a polygon with other numbers of sides. For example... Figure 7 As shown, preferably, the polygonal structure is set as a regular hexagon so that the sandwich reinforcement structure 2 is a honeycomb structure as a whole.

[0048] In this embodiment, as Figure 1 , Figure 2 As shown, the cover 1 is made of metal or composite material. The cover 1 includes an outer plate 11 and an inner plate 12, which are joined together to form an inner cavity 100. The shape of the inner cavity 100 can be set as a regular or irregular space according to actual needs.

[0049] In this embodiment, as Figure 4As shown, the sandwich reinforcement structure 2 inside the cover 1 is formed by splicing multiple modular units 21. By modularly designing the sandwich reinforcement structure 2, while ensuring the strength of the sandwich reinforcement structure 2, when a part of the sandwich reinforcement structure 2 is damaged, only the module unit 21 corresponding to the damaged area needs to be replaced, without replacing the entire sandwich reinforcement structure 2. This design significantly reduces maintenance costs compared to the traditional one-piece molded sandwich structure.

[0050] Optionally, such as Figure 3 As shown, the aforementioned hood is applied to a vehicle, such as a car, construction machinery, or other ground-based mobile equipment, or a low-altitude aircraft.

[0051] In one embodiment, a mesh-structured partition skeleton 3 is provided in the inner cavity 100 of the cover 1. The partition skeleton 3 has multiple accommodating spaces 31, and each module unit 21 is correspondingly arranged in each accommodating space 31.

[0052] In this embodiment, as Figure 1 As shown, the partition frame 3 adopts a mesh structure, which divides the inner cavity 100 into multiple independent receiving spaces 31. Each receiving space 31 is equipped with a modular unit 21, and each modular unit 21 is set independently for easy replacement. At the same time, the partition frame 3 connects the various modular units 21 into a whole to ensure the overall structural strength of the sandwich reinforcement structure 2. When the cover 1 is impacted and the sandwich reinforcement structure 2 is partially damaged, the modular unit 21 in the receiving space 31 in the damaged area is disassembled and replaced with a new modular unit 21, thus achieving the repair of the sandwich reinforcement structure 2 without having to replace the entire sandwich reinforcement structure 2, reducing maintenance costs.

[0053] Simultaneously, the module unit 21 is arranged within the accommodating space 31. The partition frame 3 can constrain and support the module unit 21. During normal use of the vehicle, the partition frame 3 constrains the module unit 21, preventing it from shifting relative to the cover 1 and ensuring the stability of the module unit 21 installation. When the cover 1 is impacted, the partition frame 3 can also constrain the module unit 21, preventing it from shifting relative to the cover 1, thereby improving the energy absorption effect of the module unit 21.

[0054] Understandably, the mesh structure of the partition skeleton 3 itself can form a receiving space 31. At the same time, in order to further fill the cover 1 with the sandwich reinforcement structure 2, the ends of the partition skeleton 3 can also form a receiving space 31 by cooperating with the inner wall of the inner cavity 100, so that the module unit 21 can be distributed in different positions of the inner cavity 100.

[0055] Specifically, since the shape of the inner cavity 100 is set according to actual needs, the specific dimensions and outer contour shape of the partition frame 3 are set according to the specific shape of the inner cavity 100, and the size and number of the accommodating space 31 of the partition frame 3 are also set according to actual needs to adapt to the structural requirements of different machine covers.

[0056] In one embodiment, a connection structure 4 is provided between the partition frame 3 and the module unit 21, and the module unit 21 is detachably connected to the partition frame 3 through the connection structure 4.

[0057] In this embodiment, as Figure 4 , Figure 5 As shown, module unit 21 is connected to partition frame 3 via connecting structure 4. By setting connecting structure 4, module unit 21 can be installed on partition frame 3, further improving the connection strength between module unit 21 and partition frame 3, thereby improving the installation stability of module unit 21. At the same time, under the action of connecting structure 4, module unit 21 and partition frame 3 can be detachably connected, which facilitates the separation of individual module unit 21 from the interlayer reinforcement structure 2 as a whole, improving the replacement and maintenance efficiency of module unit 21.

[0058] Optionally, the connection structure 4 can adopt one or more combinations of bolted connection, nested connection, magnetic connection, or snap-fit ​​connection. While ensuring the connection strength between the module unit 21 and the partition frame 3, it facilitates the separation of the module unit 21 and the partition frame 3.

[0059] In one embodiment, the connecting structure 4 includes a groove provided on the side wall of the receiving space 31, and the edge of the module unit 21 is engaged in the groove.

[0060] In this embodiment, as Figure 5 As shown, the groove is formed on the side wall of the partition frame 3, thus creating a groove on the side wall of the receiving space 31. The edge of the module unit 21 is engaged in the groove, enabling the module unit 21 to connect with the partition frame 3, facilitating the disassembly and separation of the module unit 21 and the partition frame 3. Furthermore, the connection between the module unit 21 and the partition frame 3 is designed with a nested connection method, simplifying the connection and eliminating the need for excessive additional connection structures, thereby reducing usage costs.

[0061] Optionally, the groove can be configured as a continuous or discontinuous groove structure, and the cross-sectional shape of the groove can be rectangular or trapezoidal.

[0062] Of course, in addition to the above-mentioned method of locking the edge of the module unit 21 in the groove, a snap-fit ​​protrusion (not shown in the figure) can also be fixed on the edge of the module unit 21. The snap-fit ​​protrusion is locked in the groove, which can also achieve the snap-fit ​​between the module unit 21 and the partition frame 3.

[0063] In one embodiment, the partition framework 3 includes a plurality of first partition beams 32 and a plurality of second partition beams 33, wherein the plurality of first partition beams 32 are parallel to each other, the plurality of second partition beams 33 are parallel to each other, and the first partition beams 32 intersect with the second partition beams 33, wherein the first partition beams 32 are I-beams; and / or, the second partition beams 33 are I-beams.

[0064] In this embodiment, as shown in Figure 1 , Figure 4 , Figure 5 , the first partition beams 32 and the second partition beams 33 are preferably arranged perpendicular to each other, and the plurality of first partition beams 32 and the plurality of second partition beams 33 are arranged in a crossing manner to form a stable grid structure, so that loads can be effectively dispersed and transmitted. And through the cooperation of the first partition beams 32 and the second partition beams 33, the accommodation space 31 can be directly enclosed. Of course, the protruding portions of the first partition beams 32, the protruding portions of the second partition beams 33 and the side wall of the inner cavity 100 can also cooperate to enclose the accommodation space 31.

[0065] In this embodiment, by arranging I-beams as partition beams, the overall rigidity and bearing capacity of the partition framework 3 are significantly improved. Meanwhile, the I-beam can reduce its own weight on the basis of ensuring structural strength, thereby reducing the overall weight of the hood.

[0066] In addition, as shown in Figure 5 , both the first partition beams 32 and the second partition beams 33 in this embodiment are I-beams. "I-beam" means that the cross-section of the beam structure is generally "I"-shaped. Further, the cross-section of the I-beam is I-shaped, and the I-beam is composed of an upper plate, a lower plate and a web in the middle. The cross-sectional width of the web is smaller than that of the upper plate and the lower plate, so that a recessed area is formed in the middle of the I-beam, and the recessed area can be directly used as a groove of the partition framework 3. By designing the height of the web of the I-beam, the height of the web is matched with the thickness of the module unit 21, so that the edge of the module unit 21 can be directly clamped between the upper plate and the lower plate.

[0067] In one embodiment, in the thickness direction Z of the cover body 1, a skin 22 is provided on one side or both sides of the module unit 21, and an adhesive layer 23 is provided between the skin 22 and the module unit 21.

[0068] It should be noted that the thickness direction Z in this embodiment is the height direction of the vehicle.

[0069] In this embodiment, as shown in Figure 4 , Figure 5 , Figure 6As shown, the module unit 21 has a bottom surface and a top surface in the thickness direction Z. The skin 22 is set on the bottom surface and / or top surface of the module unit 21 according to actual needs. The skin 22 covers the end face of the module unit 21, which can protect the module unit 21. When the skin 22 is provided on the module unit 21, the top and bottom surfaces of the skin 22 are preferably flush with the top and bottom surfaces of the I-beam, so that the surface of the sandwich reinforcement structure 2 is relatively flat, which facilitates the installation of the sandwich reinforcement structure 2 inside the cover 1, and at the same time facilitates the transfer of the impact force received by the cover 1 to the sandwich reinforcement structure 2.

[0070] Meanwhile, in addition to the skin 22, an adhesive layer 23 is also provided between the module unit 21 and the skin 22. The adhesive layer 23 is used to fill the gap between the skin 22 and the surface of the module unit 21, improving the sealing effect of the connection between the two. Furthermore, the adhesive layer 23 can also transfer the impact load received by the cover 1 to the module unit 21, ensuring energy transfer efficiency.

[0071] Alternatively, the skin 22 can be made of a thin metal sheet or composite material made of high-strength lightweight aluminum alloy or other materials, giving the skin 22 the advantage of being lightweight.

[0072] Optionally, the adhesive layer 23 can be bonded using structural adhesives such as epoxy resin adhesive or polyurethane adhesive.

[0073] Optionally, the skin 22 can be bonded and cured to the module unit 21 by hot pressing.

[0074] In one embodiment, the module unit 21 is provided with a strap 5, which is tied to the outside of the module unit 21.

[0075] In this embodiment, as Figure 4 As shown, the strap 5 can be tied to the outside of the module unit 21. In this way, when the vehicle collides and the module unit 21 is deformed by the impact, the strap 5 can prevent the module unit 21 from being splashed again, thereby ensuring the energy absorption effect of the module unit 21 and preventing the module unit 21 from undergoing large displacement under impact.

[0076] Specifically, the strap 5 can be made of elastic or non-elastic materials, such as nylon webbing or metal bands. The strap 5 can be fixed to the module unit 21 by means of buckles, stitching, or adhesive. Preferably, the strap 5 is adhesively attached and arranged around the circumference of the module unit 21.

[0077] Furthermore, in addition to the aforementioned method of securing the straps 5 to the outside of the module unit 21, the straps 5 can also connect the polygonal structures that make up the module unit 21. That is, the straps 5 are glued and fixed around the outer periphery of a single polygonal structure. By connecting multiple polygonal structures with the straps 5, the strength of the module unit 21 can be further improved, preventing individual polygonal structures from separating from the module unit 21 as a whole when it is impacted. When using the method of connecting the polygonal structures that make up the module unit 21 with straps 5, the thickness of the straps 5 is designed so that while the straps 5 can connect the polygonal structures, there will be no large gaps between adjacent polygonal structures. While using the straps 5 to prevent secondary splashing of polygonal structures, it ensures that the module unit 21 can perform its normal energy absorption function.

[0078] In one embodiment, the enclosure 6 is further included. The shape of the enclosure 6 is adapted to the shape of the inner cavity 100. The enclosure 6 has a first side 61 and a second side 62 opposite to each other. The first side 61 of the enclosure 6 is connected to the inner wall of the cover 1, and the second side 62 of the enclosure 6 is connected to the partition frame 3.

[0079] It should be noted that the first side 61 mentioned above refers to the outer wall of the enclosure 6, and the second side 62 mentioned above refers to the inner wall of the enclosure 6.

[0080] In this embodiment, as Figure 2 As shown, the shape of the enclosure 6 is adapted to the shape of the inner cavity 100, that is, the outline of the first side 61 of the enclosure 6 is adapted to the inner wall of the cover 1. A sandwich reinforcement structure 2 is arranged inside the enclosure 6. The enclosure 6 fits against the inner wall of the cover 1, which can increase the arrangement area of ​​the sandwich reinforcement structure 2 in the inner cavity 100. At the same time, the enclosure 6 is connected to the inner side wall of the cover 1 and to the partition frame 3, which enables the partition frame 3 to form a stable support structure. The module unit 21 can be detachably installed on the partition frame 3, which facilitates the disassembly and replacement of the module unit 21 while ensuring the overall stability of the sandwich reinforcement structure 2.

[0081] Optionally, the first side 61 of the enclosure 6 can be fixed to the inner wall of the cover 1 by welding, riveting or bonding, thereby improving the connection and fixing strength between the enclosure 6 and the cover 1.

[0082] Optionally, the partition frame 3 can be connected to the second side 62 of the enclosure 6 by means of bolts, snap-fit ​​connections, or abutments. Using the above connection methods, when the partition frame 3 is damaged by impact, it can be disassembled from the enclosure 6, thus facilitating the replacement and maintenance of the partition frame 3.

[0083] When the partition frame 3 is connected to the second side 62 of the enclosure 6 by abutting, the lengths of the first partition beam 32 and the second partition beam 33 are designed so that their ends abut against the second side 62 of the enclosure 6, thereby making it difficult for the partition frame 3 to move relative to the enclosure 6.

[0084] In one embodiment, the module unit 21 includes a first layer structure 211 and a second layer structure 212 arranged sequentially along the thickness direction Z of the cover 1. The first layer structure 211 includes a plurality of arrayed first polygonal structures 2111, and the second layer structure 212 includes a plurality of arrayed second polygonal structures 2121. The plurality of first polygonal structures 2111 and the plurality of second polygonal structures 2121 are arranged correspondingly. The wall thickness of the first polygonal structure 2111 is t1, and the wall thickness of the second polygonal structure 2121 is t2; wherein, t1 < t2, or t1 > t2.

[0085] In this embodiment, as Figure 7 , Figure 8 As shown, the module unit 21 is layered along the thickness direction Z of the cover 1. Preferably, the module unit 21 is divided into a first layer structure 211 and a second layer structure 212. The first layer structure 211 is formed by assembling multiple first polygonal structures 2111, which are preferably hexagonal. The second layer structure 212 is formed by assembling multiple second polygonal structures 2121, which are also preferably hexagonal. The first polygonal structures 2111 and the second polygonal structures 2121 are arranged correspondingly, that is, each first polygonal structure 2111 corresponds to one second polygonal structure 2121. The following description takes as an example where, along the thickness direction Z, the first layer structure 211 is located above the second layer structure 212, and the wall thickness t1 of the first polygonal structure 2111 is less than the wall thickness t2 of the second polygonal structure 2121.

[0086] The first layer structure 211 is located near the outer plate 11 of the cover 1, and the second layer structure 212 is located near the inner plate 12 of the cover 1. The second layer structure 212 effectively supports the first layer structure 211. After the cover 1 is hit by a pedestrian, the pedestrian contacts the outer plate 11 of the cover 1, and the impact force is first transmitted to the first layer structure 211 through the outer plate 11. The wall thickness t1 of the first polygonal structure 2111 of the first layer structure 211 is less than the wall thickness t2 of the second polygonal structure 2121, causing the first polygonal structure 2111 of the first layer structure 211 to collapse towards the second layer structure 212, that is, guiding the deformation direction of the module unit 21 during the collision, thereby improving the collision energy absorption effect of the module unit 21.

[0087] Of course, in addition to the above-mentioned arrangement of dividing the module unit 21 into a first layer structure 211 and a second layer structure 212, the module unit 21 can also be divided into multiple layers along the thickness direction Z of the cover 1 to meet different usage requirements.

[0088] Of course, in addition to the above-mentioned arrangement where the first layer structure 211 is placed above the second layer structure 212 and the wall thickness t1 of the first polygon structure 2111 is less than the wall thickness t2 of the second polygon structure 2121, the wall thickness t1 of the first polygon structure 2111 can also be set to be greater than the wall thickness t2 of the second polygon structure 2121, which can also achieve the collapse function.

[0089] Optionally, the first layer structure 211 and the second layer structure 212 can be set as separate units or as a single unit.

[0090] Optionally, the module unit 21 can be made of recycled paper honeycomb impregnated with flame-retardant resin. The aperture of the first polygonal structure 2111 and the second polygonal structure 2121 constituting the module unit 21 is preferably set to 5-10 mm, and multi-directional energy absorption is achieved through biomimetic hexagonal arrangement.

[0091] Secondly, this application provides a vehicle including the hood of any of the above.

[0092] In this embodiment, the hood is mounted on the vehicle. After a collision with a pedestrian, the sandwich reinforcement structure 2 is used to buffer and absorb energy to protect the pedestrian. At the same time, if a local area of ​​the sandwich reinforcement structure 2 is damaged, the sandwich reinforcement structure 2 can be repaired by replacing the module unit 21 corresponding to the damaged area. This way, the entire sandwich reinforcement structure 2 does not need to be replaced, reducing maintenance costs.

[0093] Alternatively, the vehicle may be a vehicle or a low-altitude aircraft.

[0094] Alternatively, the vehicle can be a gasoline-powered car or a new energy electric vehicle.

[0095] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and all such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A machine cover, characterized in that, include: The cover (1) has an inner cavity (100); A sandwich reinforcement structure (2) is disposed in the inner cavity (100) of the cover (1), and the cross-section of the sandwich reinforcement structure (2) includes multiple polygonal structures; The sandwich reinforcement structure (2) includes multiple module units (21), and the sandwich reinforcement structure (2) is formed by splicing together multiple module units (21).

2. The machine cover according to claim 1, characterized in that, The inner cavity (100) of the cover (1) is provided with a mesh structure partition skeleton (3), the partition skeleton (3) has multiple accommodating spaces (31), and each module unit (21) is correspondingly arranged in each accommodating space (31).

3. The machine cover according to claim 2, characterized in that, A connection structure (4) is provided between the partition frame (3) and the module unit (21), and the module unit (21) is detachably connected to the partition frame (3) through the connection structure (4).

4. The machine cover according to claim 3, characterized in that, The connection structure (4) includes a groove provided on the side wall of the receiving space (31), and the edge of the module unit (21) is engaged in the groove.

5. The machine cover according to claim 3 or 4, characterized in that, The partition frame (3) includes a plurality of first partition beams (32) and a plurality of second partition beams (33), the plurality of first partition beams (32) are parallel, the plurality of second partition beams (33) are parallel, and the first partition beams (32) and the second partition beams (33) intersect. The first partition beam (32) is an I-beam; And / or, the second partition beam (33) is an I-beam.

6. The machine cover according to claim 1, characterized in that, Along the thickness direction (Z) of the cover (1), a skin (22) is provided on one or both sides of the module unit (21), and an adhesive layer (23) is provided between the skin (22) and the module unit (21).

7. The machine cover according to claim 1, characterized in that, The module unit (21) is provided with a strap (5), which is tied to the outside of the module unit (21).

8. The machine cover according to claim 2, characterized in that, It also includes a partition (6) whose shape is adapted to the shape of the inner cavity (100). The partition (6) has a first side (61) and a second side (62) opposite to each other. The first side (61) of the partition (6) is connected to the inner wall of the cover (1), and the second side (62) of the partition (6) is connected to the partition frame (3).

9. The machine cover according to claim 1, characterized in that, The module unit (21) includes a first layer structure (211) and a second layer structure (212) arranged sequentially along the thickness direction (Z) of the cover (1); The first layer structure (211) includes a plurality of arrayed first polygonal structures (2111), and the second layer structure (212) includes a plurality of arrayed second polygonal structures (2121). The plurality of first polygonal structures (2111) and the plurality of second polygonal structures (2121) are correspondingly arranged. The wall thickness of the first polygonal structure (2111) is t1, and the wall thickness of the second polygonal structure (2121) is t2; Where t1 < t2, or t1 > t2.

10. A vehicle, characterized in that, The hood includes any one of claims 1-9.

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