Engine hood framework structure and engine hood assembly

Abstract

The utility model discloses an engine hood framework structure and an engine hood assembly, the engine hood framework structure comprises a framework main body of an annular structure, the outer ring edge of the framework main body is provided with a first supporting part extending upwards, and the inner ring edge of the framework main body is provided with a second supporting part extending upwards; an annular groove with an upward notch is defined by the framework body, the first supporting part and the second supporting part, and the first supporting part and the second supporting part are used for being fixedly connected with an engine hood outer plate. According to the engine hood outer plate, the concave rigidity and the overall strength of the engine hood outer plate are improved, the engine hood outer plate can be stressed more evenly, the engine hood outer plate is suitable for being made of light materials such as carbon fibers, it can be guaranteed that the rigidity and the strength meet the requirements, the requirement for light weight can be met, and oil consumption of a vehicle is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and more specifically, to an engine hood skeleton structure and an engine hood assembly. Background Art

[0002] The engine hood assemblies of traditional vehicle models usually adopt steel or aluminum alloy materials and are usually stamping formed parts. They have a large number of components and a large weight, resulting in high vehicle fuel consumption. If the structure of the original engine hood assembly remains unchanged and lightweight materials (such as carbon fiber and other materials) are directly used for manufacturing, it will be difficult to meet the requirements of the stiffness and strength of the engine hood assembly. Summary of the Utility Model

[0003] In view of this, the utility model aims to provide an engine hood skeleton structure and an engine hood assembly to solve at least one of the technical problems such as the large number of components, large weight, and difficulty in meeting the stiffness and strength requirements when directly using lightweight materials in the existing engine hood skeleton structure.

[0004] The utility model provides an engine hood skeleton structure, including a skeleton main body in a ring structure. A first support portion extending upward is provided at the outer ring edge of the skeleton main body, and a second support portion extending upward is provided at the inner ring edge of the skeleton main body. The skeleton main body, the first support portion, and the second support portion enclose a ring-shaped groove with the notch facing upward. The first support portion and the second support portion are used for fixedly connecting with the outer panel of the engine hood.

[0005] Further, a sealing protrusion portion extending downward is provided at the inner ring edge of the skeleton main body to be hermetically connected with the engine compartment seal.

[0006] Further, hinge boss portions are provided on the left and right sides of the skeleton main body, and the hinge boss portions extend downward.

[0007] Further, strut boss portions are provided on the left and right sides of the skeleton main body, and the strut boss portions extend downward.

[0008] Further, buffer block fitting grooves are provided on the left and right sides of the skeleton main body, and the notch of the buffer block fitting groove faces downward.

[0009] Further, a lock catch boss portion is provided on the skeleton main body, and the lock catch boss portion extends downward.

[0010] Further, there is a first distance L 1 between the buffer block fitting grooves on the left and right sides, and the skeleton main body has a first width L 2 at the position corresponding to the buffer block fitting groove. Among them, L 2>L 1 ≥85% L 2 。

[0011] Furthermore, a reinforcing layer is provided on the upper surface of the skeleton main body. The reinforcing layer includes a hinge reinforcing layer laid corresponding to the hinge boss portion, a strut reinforcing layer laid corresponding to the strut boss portion, a mating groove reinforcing layer laid corresponding to the buffer block mating groove, and a latch reinforcing layer laid corresponding to the latch boss portion.

[0012] Furthermore, the skeleton main body is formed by laminating a plurality of first carbon fiber layers, and the fiber directions of two adjacent first carbon fiber layers form a 45° angle.

[0013] Furthermore, the reinforcing layer is formed by laminating a plurality of second carbon fiber layers, and the fiber directions of two adjacent second carbon fiber layers form a 45° angle.

[0014] Furthermore, the thickness of the first carbon fiber layer is 0.2 - 0.3 mm.

[0015] Furthermore, the thickness of the second carbon fiber layer is 0.2 - 0.3 mm.

[0016] The present utility model also provides an engine hood assembly, including the engine hood skeleton structure described above.

[0017] In the engine hood skeleton structure of the present utility model, the skeleton main body has an annular structure, which is particularly suitable for vehicle models with a storage compartment provided in the engine compartment. The annular hollow part of the skeleton main body forms a relatively large storage space with the storage compartment. The skeleton main body is fixedly connected to the engine hood outer panel through the first support portion and the second support portion, and the annular groove formed by the skeleton main body, the first support portion and the second support portion can form a closed inner cavity with the engine hood outer panel, so that the anti-denting stiffness and overall strength of the engine hood outer panel are improved, which is beneficial to the more uniform force of the engine hood outer panel. It is suitable for using lightweight materials such as carbon fiber, which can not only ensure that the stiffness and strength meet the requirements, but also meet the lightweight requirements and reduce vehicle fuel consumption.

[0018] The engine hood assembly of the present utility model has all the beneficial effects of the above-mentioned engine hood skeleton structure, which will not be elaborated here.

[0019] In order to make the above-mentioned objects, features and advantages of the present utility model more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the accompanying drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The same reference numerals with alphabetical suffixes or different alphabetical suffixes may represent different instances of similar components. The drawings generally illustrate various embodiments by way of example rather than limitation, and are used together with the description and the claims to explain the disclosed embodiments. Where appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the device or method. The accompanying drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0021] Figure 1 is one of the schematic diagrams of the engine hood skeleton structure in the present utility model;

[0022] Figure 2 is the second schematic diagram of the engine hood skeleton structure in the present utility model;

[0023] Figure 3 is the third schematic diagram of the engine hood skeleton structure in the present utility model;

[0024] Figure 4 is Figure 3 the sectional schematic diagram at A-A in;

[0025] Figure 5 is Figure 3 the sectional schematic diagram at B-B in;

[0026] Figure 6 is Figure 3 the sectional schematic diagram at C-C in;

[0027] Figure 7 is Figure 6 the enlarged sectional view at I in.

[0028] Among them, the above-mentioned drawings include the following reference numerals:

[0029] 01, outer panel of the engine hood; 1, skeleton main body; 10, annular groove; 11, first support part; 12, second support part; 13, sealing projection part; 14, hinge boss part; 15, strut boss part; 16, buffer block mating groove; 17, latch boss part; 18, strengthening layer; 181, hinge strengthening layer; 182, strut strengthening layer; 183, mating groove strengthening layer; 184, latch strengthening layer; 100, first carbon fiber layer; 200, second carbon fiber layer. Detailed implementation manners

[0030] Next, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings, but this is not intended to limit the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0032] This specification may use the phrase "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", all of which may refer to one or more of the same or different embodiments according to the present invention.

[0033] Combined with Figures 1 to 7 As shown, in the figure, the Z-axis represents the vehicle height direction, the positive direction of the Z-axis represents upward, the negative direction of the Z-axis represents downward, the X-axis represents the vehicle length direction, the positive direction of the X-axis represents forward, the negative direction of the X-axis represents backward, the Y-axis represents the vehicle width direction, the positive direction of the Y-axis represents left, and the negative direction of the Y-axis represents right.

[0034] The present invention provides an engine hood skeleton structure, which includes a skeleton main body 1 in a ring structure. The outer ring edge of the skeleton main body 1 is provided with a first support portion 11 extending upward, the inner ring edge of the skeleton main body 1 is provided with a second support portion 12 extending upward, and the skeleton main body 1, the first support portion 11 and the second support portion 12 enclose a ring-shaped groove 10 with the notch facing upward. The first support portion 11 and the second support portion 12 are used for fixedly connecting with the outer panel 01 of the engine hood.

[0035] Combined with Figure 1 、 Figure 3 and Figure 4 As shown, the skeleton main body 1 is in a ring structure, that is, there is a hollow at the central position of the skeleton main body 1. The outer ring shape and the inner ring shape of this ring structure may not be similar (for example Figure 1 in the example, the outer ring has the same shape as the outer panel of the engine hood, and the inner ring is generally in a rounded rectangular shape), or they may be similar (for example, the outer ring is generally in an isosceles trapezoid shape, and the inner ring is also in an isosceles trapezoid shape).

[0036] In this embodiment, combined withFigure 1 , Figure 3 and Figure 4 As shown in Figure 1 , Figure 3 and Figure 4 , a first support portion 11 is integrally connected to the outer ring edge of the frame main body 1. The first support portion 11 extends upward (i.e., in the positive Z-axis direction), and preferably forms a flanging structure extending outward from the frame main body 1, so as to lap with the inner surface of the outer panel 01 of the engine hood, forming a support effect; a second support portion 12 is integrally connected to the inner ring edge of the frame main body 1. The second support portion 12 extends upward (i.e., in the positive Z-axis direction), and preferably forms a flanging structure extending inward from the frame main body 1, so as to lap with the inner surface of the outer panel 01 of the engine hood, forming a support effect ( Figure 4 In Figure 4 , only the outer panel 01 of the engine hood is schematically shown by a dashed line, and its specific structure is not shown here).

[0037] It should be understood that in the foregoing embodiments, preferably, the frame main body 1 is integrally connected to the first support portion 11 and the second support portion 12 respectively, reducing the number of parts and the number of die toolings, and reducing the production cost. Those skilled in the art can also select other connection schemes (such as welding, screwing, etc.), which are not specifically limited here; in addition, the first support portion 11 and the second support portion 12 can also be lapped and supported with the outer panel 01 of the engine hood through a connection bracket (this scheme is not shown in the figure). Those skilled in the art can select a suitable scheme according to needs, as long as the first support portion 11 and the second support portion 12 can support the outer panel 01 of the engine hood, and the specific structure is not limited here.

[0038] Combined with Figure 3 and Figure 4 As shown, the frame main body 1, the first support portion 11 and the second support portion 12 enclose a ring-shaped groove 10. The notch of the ring-shaped groove 10 faces upward (i.e., toward the positive Z-axis side). When the first support portion 11 and the second support portion 12 are respectively fixedly connected to the outer panel 01 of the engine hood, the outer panel 01 of the engine hood, the first support portion 11, the frame main body 1 and the second support portion 12 jointly enclose an annular closed inner cavity.

[0039] In the engine hood frame structure of the present utility model, the frame main body 1 is in a ring-shaped structure, which is particularly suitable for vehicle models with a storage bin provided in the engine compartment. The annular hollow part of the frame main body 1 forms a relatively large storage space with the storage bin; the frame main body 1 is fixedly connected to the outer panel 01 of the engine hood through the first support portion 11 and the second support portion 12, and the ring-shaped groove 10 formed by the frame main body 1, the first support portion 11 and the second support portion 12 can form a closed inner cavity with the outer panel 01 of the engine hood, so that the dent resistance stiffness and overall strength of the outer panel 01 of the engine hood are improved, which is beneficial to the more uniform force of the outer panel 01 of the engine hood. It is suitable for using lightweight materials such as carbon fiber, etc., which can not only ensure that the stiffness and strength meet the requirements, but also meet the lightweight requirements and reduce the vehicle fuel consumption.

[0040] Furthermore, a sealing convex part 13 extending downward is provided at the inner ring edge of the frame main body 1 for sealing connection with the engine compartment seal.

[0041] Combined with Figure 2 As shown, a sealing convex part 13 is provided at the inner ring edge of the frame main body 1. The sealing convex part 13 extends downward (i.e., in the reverse direction of the Z-axis). The sealing convex part 13 forms an annular boss structure. The engine hood frame structure in this embodiment is applicable to vehicle models with a storage compartment in the engine compartment. An engine compartment seal is provided at the edge of the storage compartment. When the engine hood assembly is closed, the sealing convex part 13 abuts against the engine compartment seal to achieve sealing connection.

[0042] In this way, the sealing performance is ensured through the sealing cooperation between the sealing convex part 13 and the engine compartment seal, preventing water, dust, etc. from entering the storage compartment in the engine compartment.

[0043] Furthermore, hinge boss parts 14 are provided on the left and right sides of the frame main body 1, and the hinge boss parts 14 extend downward.

[0044] Combined with Figure 2 、 Figure 3 and Figure 5 As shown, hinge boss parts 14 are provided on the left and right sides (i.e., both sides in the positive and negative Y-axis directions) of the frame main body 1. The hinge boss parts 14 extend downward (i.e., in the reverse direction of the Z-axis). The engine hood hinge is installed on the hinge boss parts 14. The hinge boss parts 14 provide sufficient Z-direction distance between the hinge installation position and the engine hood outer panel 01.

[0045] In this way, the hinge boss parts 14 are beneficial to ensuring the installation accuracy of the hinge, ensuring that the Z-direction distance between the hinge and the engine hood outer panel 01 meets the design requirements. At the same time, it increases the buffer energy absorption space when the engine hood collides, which is beneficial to the pedestrian safety protection performance.

[0046] Furthermore, strut boss parts 15 are provided on the left and right sides of the frame main body 1, and the strut boss parts 15 extend downward.

[0047] Combined with Figure 2 、 Figure 3 and Figure 5 As shown, strut boss parts 15 are provided on the left and right sides (i.e., both sides in the positive and negative Y-axis directions) of the frame main body 1. The strut boss parts 15 extend downward (i.e., in the reverse direction of the Z-axis). The engine hood hinge is installed on the strut boss parts 15. The strut boss parts 15 provide sufficient Z-direction distance between the strut installation position and the engine hood outer panel 01.

[0048] Thus, the strut boss portion 15 helps to ensure the installation accuracy of the strut, ensure that the Z-direction distance between the strut and the outer panel 01 of the engine hood meets the design requirements, and at the same time increases the buffer energy absorption space when the engine hood collides, which is beneficial to the pedestrian safety protection performance.

[0049] Further, buffer block mating grooves 16 are provided on the left and right sides of the frame body 1, and the openings of the buffer block mating grooves 16 are arranged downward.

[0050] Combined with Figure 2 、 Figure 3 and Figure 6 shown in the figure, buffer block mating grooves 16 are provided on the left and right sides (i.e., both sides of the positive and negative Y axes) of the frame body 1, the openings of the buffer block mating grooves 16 are arranged downward (i.e., the negative Z axis), and the buffer blocks are located in the buffer block mating grooves 16 when they are mated with the frame body 1.

[0051] Thus, the cooperation between the buffer block and the engine hood frame structure is ensured through the buffer block mating grooves 16, which is beneficial to the buffering of the engine hood and improves the opening and closing performance of the engine hood.

[0052] Further, the frame body 1 is provided with a latch boss portion 17, and the latch boss portion 17 extends downward.

[0053] Combined with Figure 2 、 Figure 3 and Figure 4 shown in the figure, latch boss portions 17 are provided on the left and right sides (i.e., both sides of the positive and negative Y axes) of the frame body 1, the latch boss portions 17 extend downward (i.e., the negative Z axis), the engine hood latch is installed on the latch boss portions 17, and the latch boss portions 17 provide a sufficient Z-direction distance between the latch installation position and the outer panel 01 of the engine hood.

[0054] Thus, the latch boss portion 17 helps to ensure the installation accuracy of the latch, ensure that the Z-direction distance between the latch and the outer panel 01 of the engine hood meets the design requirements, and at the same time increases the buffer energy absorption space when the engine hood collides, which is beneficial to the pedestrian safety protection performance.

[0055] Further, a first distance L 1 is provided between the buffer block mating grooves 16 on the left and right sides, and the frame body 1 has a first width L 2 at the position corresponding to the buffer block mating grooves 16, where L 2 >L 1 ≥85%L 2 .

[0056] Combined with Figure 3 shown in the figure, a first distance L 1, the skeleton main body 1 has a first width L at the position corresponding to the buffer block fitting groove 16 2 , and its physical structure results in L 2 > L 1 , at the same time, in order to improve the torsional stiffness and stability of the engine hood, its dimensional ratio is designed as L 1 ≥ 85% L 2 , preferably L 1 ≥ 90% L 2 .

[0057] Further, a reinforcing layer 18 is provided on the upper side surface of the skeleton main body 1. The reinforcing layer 18 includes a hinge reinforcing layer 181 laid corresponding to the hinge boss portion 14, a strut reinforcing layer 182 laid corresponding to the strut boss portion 15, a fitting groove reinforcing layer 183 laid corresponding to the buffer block fitting groove 16, and a latch reinforcing layer 184 laid corresponding to the latch boss portion 17.

[0058] Combined Figure 3 As shown, a reinforcing layer 18 is provided on the upper side surface (i.e., the surface facing the positive direction of the Z-axis) of the skeleton main body 1. The reinforcing layer 18 includes a hinge reinforcing layer 181, a strut reinforcing layer 182, a fitting groove reinforcing layer 183, and a latch reinforcing layer 184, which are laid corresponding to the positions of the hinge boss portion 14, the strut boss portion 15, the buffer block fitting groove 16, and the latch boss portion 17 respectively, so that the above-mentioned parts of the skeleton main body 1 are locally thickened. Combined Figure 3 As shown, in this embodiment, preferably, the hinge reinforcing layer 181 and the strut reinforcing layer 182 are integrally connected, so as to further improve the strength of the hinge and strut installation positions.

[0059] Thus, by laying the reinforcing layer 18 for the hinge boss portion 14, the strut boss portion 15, the buffer block fitting groove 16, and the latch boss portion 17, a local thickening and strengthening effect is achieved, which is beneficial to improving the strength of the installation positions (or fitting positions) of the hinge, the strut, the buffer block, and the latch.

[0060] Further, the skeleton main body 1 is formed by laminating a plurality of first carbon fiber layers 100, and the fiber directions of two adjacent first carbon fiber layers 100 form a 45° angle.

[0061] Combined Figure 3 , Figure 6 and Figure 7 As shown, the skeleton main body 1 is an overall plate member, which is formed by laminating a plurality of first carbon fiber layers 100. Among them, the fiber directions of two adjacent first carbon fiber layers 100 form a 45° angle. In this embodiment, the skeleton main body 1 is formed by laminating five first carbon fiber layers 100. According to the order from the positive direction of the Z-axis to the negative direction of the Z-axis, the fiber direction of the first first carbon fiber layer 100 is +45° or -45° (i.e.,Figure 3 The positive direction of the X-axis deviates 45° towards the positive direction of the Y-axis, or the positive direction of the X-axis deviates 45° towards the negative direction of the Y-axis), the fiber direction of the second first carbon fiber layer 100 is 0° or 90° (i.e., parallel to the X-axis or parallel to the Y-axis), the fiber direction of the third first carbon fiber layer 100 is +45° or -45°, the fiber direction of the fourth first carbon fiber layer 100 is 0° or 90°, and the fiber direction of the fifth first carbon fiber layer 100 is +45° or -45°.

[0062] In this way, the load requirements of the engine hood skeleton structure can be better met, and the overall strength performance can be improved.

[0063] Furthermore, the reinforcing layer 18 is formed by laminating a plurality of second carbon fiber layers 200, and the fiber directions of the adjacent second carbon fiber layers 200 on both sides form a 45° angle.

[0064] Combined Figure 3 、 Figure 6 and Figure 7 As shown in, taking the mating groove reinforcing layer 183 as an example to illustrate the lamination structure of the reinforcing layer 18, the hinge reinforcing layer 181, the strut reinforcing layer 182, and the lock reinforcing layer 184 are similar thereto, and are all formed by laminating a plurality of second carbon fiber layers 200. Among them, the fiber directions of the adjacent two second carbon fiber layers 200 form a 45° angle. In this embodiment, the mating groove reinforcing layer 183 is formed by laminating five second carbon fiber layers 200. According to the order from the positive direction of the Z-axis to the negative direction of the Z-axis, the fiber direction of the first second carbon fiber layer 200 is +45° or -45° (i.e., Figure 3 the positive direction of the X-axis deviates 45° towards the positive direction of the Y-axis, or the positive direction of the X-axis deviates 45° towards the negative direction of the Y-axis), the fiber direction of the second second carbon fiber layer 200 is 0° or 90° (i.e., parallel to the X-axis or parallel to the Y-axis), the fiber direction of the third second carbon fiber layer 200 is +45° or -45°, the fiber direction of the fourth second carbon fiber layer 200 is 0° or 90°, and the fiber direction of the fifth second carbon fiber layer 200 is +45° or -45°.

[0065] In this way, the reinforcing layer 18 can play a role in locally thickening and strengthening parts such as hinges and struts, thereby improving the overall strength performance.

[0066] Preferably, the thickness of the first carbon fiber layer 100 is 0.2 - 0.3 mm.

[0067] In this way, while ensuring that the strength of the skeleton main body 1 meets the requirements, the overall thickness is avoided from being too large. Compared with the traditional steel solution, the carbon fiber layer solution in this solution only slightly increases the thickness, but reduces the weight of the parts by about 45 - 50%. Compared with the aluminum alloy material solution, this solution can also reduce the weight of the parts by about 15 - 20%.

[0068] Preferably, the thickness of the second carbon fiber layer 200 is 0.2 - 0.3 mm.

[0069] In this way, the reinforcing layer 18 plays a role in locally thickening and strengthening parts such as hinges and struts. Only a slight increase in thickness occurs in the corresponding parts, but the weight of the components is greatly reduced, which is beneficial to reducing vehicle fuel consumption and meets the requirements of vehicle lightweighting.

[0070] The present utility model also provides an engine hood assembly, including the engine hood frame structure described above.

[0071] In the engine hood assembly of the present utility model, the above-described engine hood frame structure is adopted. Its frame main body 1 is in a ring structure, especially suitable for vehicle models with a storage bin provided in the engine compartment. A relatively large storage space is formed between the ring-shaped hollow part of the frame main body 1 and the storage bin; the frame main body 1 is fixedly connected to the engine hood outer panel 01 through the first support part 11 and the second support part 12, and the annular groove 10 formed by the frame main body 1, the first support part 11 and the second support part 12 can form a closed inner cavity with the engine hood outer panel 01, so that the dent resistance stiffness and overall strength of the engine hood outer panel 01 are improved, which is beneficial to the more uniform force on the engine hood outer panel 01. It is suitable for using lightweight materials such as carbon fiber, which can not only ensure that the stiffness and strength meet the requirements, but also meet the lightweighting requirements and reduce vehicle fuel consumption.

[0072] For the sake of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" etc. can be used here to describe the spatial positional relationship between one device or feature and other devices or features as shown in the figure. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the figure is inverted, the device described as "above other devices or structures" or "over other devices or structures" will be positioned as "below other devices or structures" or "under other devices or structures" afterwards. Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned or rotated in other different ways by 90 degrees or in other orientations, and corresponding interpretations are made for the spatial relative descriptions used here.

[0073] In addition to the above, it should be noted that the "one embodiment", "another embodiment", "embodiment" and the like mentioned in this specification refer to the specific features, structures or characteristics described in connection with that embodiment being included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in connection with any one embodiment, it is intended that the implementation of such feature, structure or characteristic in combination with other embodiments also fall within the scope of the present utility model.

[0074] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An engine hood skeleton structure, characterized in that: It includes a skeleton body in a ring-shaped structure, wherein the outer ring edge of the skeleton body is provided with a first support portion extending upward, and the inner ring edge of the skeleton body is provided with a second support portion extending upward, and the skeleton body, the first support portion and the second support portion are arranged to form an annular groove with a notch facing upward, and the first support portion and the second support portion are used to be fixedly connected to the outer panel of the engine hood.

2. The engine hood skeleton structure according to claim 1, characterized in that: The inner ring edge of the skeleton body is provided with a sealing protrusion extending downward so as to be sealed with the cabin sealing member.

3. The engine hood skeleton structure according to claim 1, characterized in that: The left and right sides of the frame body are provided with hinge bosses, and the hinge bosses are extended downward; And / or, the left and right sides of the skeleton body are provided with support rod boss portions, and the support rod boss portions are extended downward; And / or, the left and right sides of the skeleton body are provided with buffer block matching grooves, and the notches of the buffer block matching grooves are arranged downward; And / or, the skeleton body is provided with a locking boss portion, and the locking boss portion is extended downward.

4. The engine hood skeleton structure according to claim 3, characterized in that: There is a first spacing L1 between the buffer block matching grooves on the left and right sides, and the position of the skeleton body corresponding to the buffer block matching groove has a first width L2, wherein L2>L1≥85%L2.

5. The engine hood skeleton structure according to claim 3, characterized in that: A reinforcement layer is provided on the upper side surface of the skeleton body, and the reinforcement layer includes a hinge reinforcement layer laid corresponding to the hinge boss portion, a strut reinforcement layer laid corresponding to the strut boss portion, a matching groove reinforcement layer laid corresponding to the buffer block matching groove, and a lock reinforcement layer laid corresponding to the lock boss portion.

6. The engine hood skeleton structure according to claim 1, characterized in that: The skeleton body is formed by stacking a plurality of first carbon fiber layers, and the fiber directions of two adjacent first carbon fiber layers form an angle of 45°.

7. The engine hood skeleton structure according to claim 5, characterized in that: The reinforcement layer is formed by stacking a plurality of second carbon fiber layers, and the fiber directions of the second carbon fiber layers on two adjacent sides form an angle of 45°.

8. The engine hood skeleton structure according to claim 6, characterized in that: The thickness of the first carbon fiber layer is 0.2-0.3 mm.

9. The engine hood skeleton structure according to claim 7, characterized in that: The thickness of the second carbon fiber layer is 0.2-0.3 mm.

10. An engine hood assembly, characterized in that: The engine hood skeleton structure comprises the engine hood skeleton structure as claimed in any one of claims 1 to 9.

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