Engine hood inner plate assembly and vehicle

Abstract

The utility model provides an engine hood inner plate assembly and a vehicle. The engine hood inner plate assembly comprises an engine hood inner plate, a reinforcing plate and an engine hood hinge. The middle part of the hood inner plate is hollowed to form a weight-reducing energy-absorbing area; the reinforcing plate is connected to the hood inner plate and forms a reinforcing area outside the weight reduction and energy absorption area; the hood hinge is connected to the reinforcing area and provided with a vertical mounting face used for being connected with an engine compartment metal plate, and the hood hinge forms a bent supporting structure in the vertical direction. According to the engine hood inner plate assembly provided by the utility model, the hood hinge is connected with the reinforcing area formed by arranging the reinforcing plate, so that the rigidity of the connecting position of the hood hinge can be improved, and a bending supporting structure formed by the hood hinge in the vertical direction is utilized, so that the supporting rigidity mode of the hood hinge can be optimized; and lateral deformation and energy absorption of the hood hinge are facilitated, so that the pedestrian safety protection performance of the engine hood is improved, and the balance of the engine hood in rigidity performance and pedestrian protection performance is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and in particular relates to an engine hood inner plate assembly and a vehicle. Background Art

[0002] Pedestrian protection is one of the indicators of vehicle safety performance. It is mainly based on the safety of vulnerable groups in traffic accidents. The damage to vulnerable groups in traffic accidents is reduced by reducing the strength of relevant vehicle parts. The engine hood is the main location for pedestrians to hit in traffic accidents, so the engine hood needs to have excellent pedestrian protection performance.

[0003] At present, in order to meet the demand for lightweight, aluminum is increasingly used in the design of engine hoods. However, aluminum engine hoods have high requirements for anti-dent performance and rigidity performance in the hinge installation area, which conflicts with the requirements for pedestrian protection performance. Therefore, it is urgent to find a solution that can balance the rigidity performance and pedestrian protection performance of aluminum engine hoods. Utility Model Content

[0004] An embodiment of the utility model provides an engine hood inner panel assembly, which is intended to balance the rigidity performance and pedestrian protection performance of the engine hood.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by the utility model is: in the first aspect, an engine hood inner panel assembly is provided, including a hood inner panel, a reinforcement plate and a hood hinge; the middle portion of the hood inner panel is hollowed out to form a weight reduction and energy absorption area; the reinforcement plate is connected to the hood inner panel and forms a reinforcement area outside the weight reduction and energy absorption area; the hood hinge is connected to the reinforcement area and has a vertical mounting surface for connecting to the engine compartment sheet metal, and the hood hinge forms a bending support structure in the vertical direction.

[0006] In combination with the first aspect, in a possible implementation, a weight-reducing hole is opened in the middle of the inner panel of the hood and support ribs are connected in the weight-reducing hole to form a weight-reducing and energy-absorbing area; wherein, the boundary of the weight-reducing hole is bent to form a step ring beam, and a plurality of first weakened holes are spaced apart on the step ring beam, and a plurality of second weakened holes are spaced apart on the support ribs.

[0007] For example, the supporting reinforcement includes a cross reinforcement, two angle reinforcements, and two plate reinforcements; wherein, the front and rear ends of the cross reinforcement are respectively connected to the step ring beam; the two angle reinforcements are symmetrically distributed on both sides of the cross reinforcement, both ends of the two angle reinforcements are connected to the step ring beam, and the corner parts of the two angle reinforcements are respectively connected to the left and right ends of the cross reinforcement; the two plate reinforcements are respectively connected to the two sides of the front end of the cross reinforcement, and are respectively connected to the step ring beam.

[0008] Exemplarily, the hood hinge includes a fixed end hinge, a movable end hinge, and at least one hinge arm; the fixed end hinge has a vertical mounting surface, the movable end hinge is connected to the reinforced area, one end of the hinge arm is hinged to the fixed end hinge, and the other end is hinged to the movable end hinge; wherein, at least one of the fixed end hinge, the movable end hinge and the hinge arm is provided with a bending portion, and the bending portions together form a bending support structure.

[0009] In some embodiments, the fixed end hinge is provided with a first bending portion, which is bent toward one side of the vertical mounting surface and forms a hinge mounting surface; the hinge mounting surface is hinged to one end of the hinge arm; wherein, a first reinforcing rib is provided on the first bending portion, and a first hollow hole is opened on the first reinforcing rib.

[0010] In a possible implementation, a limiting rib is provided on the first bending portion, and the limiting rib is used to vertically abut the hinge arm.

[0011] In some embodiments, both ends of the hinge arm are bent toward both sides to form second bending portions, wherein the second bending portion at one end is hinged to the fixed end hinge, and the second bending portion at the other end is hinged to the movable end hinge; wherein a second reinforcing rib is provided on the hinge arm at a portion between the second bending portions on both sides thereof.

[0012] Exemplarily, the movable end hinge includes a mounting portion and a third bending portion, the mounting portion is fixed to the reinforced area, the third bending portion is bent downward at one side edge of the mounting portion and is hinged to the hinge arm; wherein, the width of both ends of the mounting portion gradually narrows, a third reinforcing rib is provided in the middle of the mounting portion, and a second hollow hole is opened on the third reinforcing rib.

[0013] In some embodiments, a third weakened hole is opened in the middle of the reinforcing plate, and weakened notches are spaced apart at the edge of the reinforcing plate.

[0014] The beneficial effect of the engine hood inner panel assembly provided by the utility model is that: compared with the prior art, the engine hood inner panel assembly of the utility model is provided with a reinforcement plate on the portion of the hood inner panel outside the weight reduction and energy absorption area to form a reinforcement area, and the connection between the hood hinge and the reinforcement area can improve the stiffness of the connection position of the hood hinge, and on this basis, the bent support structure formed by the hood hinge in the vertical direction can not only optimize the support stiffness mode of the hood hinge, but also facilitate the lateral deformation and energy absorption of the hood hinge, thereby improving the pedestrian safety protection performance of the hood and improving the balance of the hood in stiffness performance and pedestrian protection performance.

[0015] In a second aspect, an embodiment of the utility model further provides a vehicle, comprising the above-mentioned engine hood inner panel assembly.

[0016] Compared with the prior art, the vehicle provided by the utility model adopts the above-mentioned engine hood inner panel assembly, and a reinforcement plate is arranged on the position of the hood inner panel outside the weight reduction and energy absorption area to form a reinforcement area. The connection between the hood hinge and the reinforcement area can improve the stiffness of the connection position of the hood hinge. On this basis, the bent support structure formed by the hood hinge in the vertical direction can not only optimize the support stiffness mode of the hood hinge, but also facilitate the lateral deformation and energy absorption of the hood hinge, thereby improving the pedestrian safety protection performance of the engine hood and improving the balance of the engine hood in stiffness performance and pedestrian protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of the engine hood inner panel assembly provided by the embodiment of the utility model Figure 1 ;

[0018] Figure 2 A schematic diagram of the three-dimensional structure of the engine hood inner panel assembly provided by the embodiment of the utility model Figure 2 ;

[0019] Figure 3 A schematic diagram of the top view of the engine hood inner panel assembly provided by an embodiment of the utility model;

[0020] Figure 4 for Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0021] Figure 5 A schematic diagram of the three-dimensional structure of the hood hinge used in the embodiment of the utility model;

[0022] Figure 6 A front structural schematic diagram of a hood hinge used in an embodiment of the utility model;

[0023] Figure 7 This is a schematic diagram of the three-dimensional structure of the reinforcement plate used in the embodiment of the utility model.

[0024] In the figure: 10, hood inner plate; 100, weight reduction and energy absorption area; 101, weight reduction hole; 102, support rib; 1020, second weakened hole; 1021, cross rib; 1022, angle rib; 1023, plate rib; 103, step ring beam; 1030, first weakened hole; 20, reinforcement plate; 200, reinforcement area; 21, third weakened hole; 22, weakened notch; 30, hood hinge; 300, bending support structure; 31, fixed end Hinge; 311, vertical mounting surface; 312, first bending portion; 3121, hinge mounting surface; 3122, first reinforcing rib; 3123, first hollow hole; 3124, limiting rib; 3125, limiting bolt; 32, movable end hinge; 321, mounting portion; 3211, third reinforcing rib; 3212, second hollow hole; 322, third bending portion; 33, hinge arm; 331, second bending portion; 3311, second reinforcing rib. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] It should be noted that when an element is referred to as being "disposed on" or "connected to" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0027] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0028] Please also read Figures 1 to 7The engine hood inner panel assembly provided by the utility model is now described. The engine hood inner panel assembly includes an engine hood inner panel 10, a reinforcement plate 20 and an engine hood hinge 30; the middle of the engine hood inner panel 10 is hollowed out to form a weight reduction and energy absorption area 100; the reinforcement plate 20 is connected to the engine hood inner panel 10 and forms a reinforcement area 200 outside the weight reduction and energy absorption area 100; the engine hood hinge 30 is connected to the reinforcement area 200 and has a vertical mounting surface 311 for connecting to the engine compartment sheet metal, and the engine hood hinge 30 forms a bending support structure 300 in the vertical direction.

[0029] It should be noted that, in the present embodiment, the hood inner panel 10 can be a conventional sheet metal component or an aluminum component. Considering the lightweight index, an aluminum hood inner panel 10 is preferably used; the reinforcement plate 20 can also be an aluminum part or a steel sheet metal part. Considering the rigidity improvement effect for the hinge installation position, a steel sheet metal part with better rigidity can be preferably used as the reinforcement plate 20; the hood hinge 30 can be a steel hinge or an aluminum hinge. Here, a steel hinge is preferably used.

[0030] In this embodiment, the weight-reducing and energy-absorbing area 100 formed by hollowing out the upper middle part of the hood inner panel 10 can be a porous structure, and weight reduction is achieved by using the holes. At the same time, the parts around the holes can collapse and deform into the holes to produce an energy-absorbing effect. At the same time, in order to improve the compression and dent-resistance of the hood outer panel, the parts between the holes in the weight-reducing and energy-absorbing area 100 can be connected to the hood outer panel to form support for the hood outer panel.

[0031] In this embodiment, the reinforcing plate 20 can be attached to the rear corner area of ​​the hood inner panel 10 and fixed by welding, riveting or screwing. In this fixing method, multi-welding point welding can be preferably used; the reinforcing plate 20 can be attached to the upper surface of the hood inner panel 10, or it can be attached to the lower surface of the hood inner panel 10. In this method, it is preferably attached to the upper surface of the hood inner panel 10, thereby hiding the reinforcing plate 20 between the hood inner panel 10 and the hood outer panel, thereby improving the surface quality of the hood inner panel 10; the hood hinge 30 and the hood inner panel 10 can be fixed by screwing after fitting, specifically, the connecting surface of the hood hinge 30 can be fitted to the lower surface of the reinforcing area 200 of the hood inner panel 10, at this time, the reinforcing area 200 forms a three-layer stacked structure based on the connecting surface of the hood hinge 30, the plate surface of the hood inner panel 10 and the reinforcing plate 20, thereby ensuring the rigidity of the connecting position of the hood hinge 30.

[0032] In the present embodiment, the hood hinge 30 may be formed by continuous bending to form a bending support structure 300, and the bending support structure 300 may specifically be wavy, stepped or U-shaped, and utilize its bending structure to enhance the vertical support stiffness mode of the hood hinge 30, while also ensuring that the hood hinge 30 has the flexibility to bend and deform laterally, so that in the event of a collision the lateral deformation of the hood hinge 30 can be utilized to absorb energy and provide pedestrian safety protection; thereby, the stiffness of the connection area of ​​the hood hinge 30 is improved by providing the reinforcing plate 20, and the effect of the hood hinge 30 on pedestrian safety protection is achieved by utilizing the bending support structure 300, thereby balancing the stiffness performance and pedestrian protection performance of the engine hood.

[0033] Compared with the prior art, the hood inner panel assembly provided in the present embodiment is provided with a reinforcing plate 20 at a portion of the hood inner panel 10 outside the weight reduction and energy absorption area 100 to form a reinforced area 200. The connection between the hood hinge 30 and the reinforced area 200 can improve the stiffness of the connection position of the hood hinge 30. On this basis, the bent support structure 300 formed in the vertical direction of the hood hinge 30 can not only optimize the support stiffness mode of the hood hinge 30, but also facilitate the lateral deformation and energy absorption of the hood hinge 30, thereby improving the pedestrian safety protection performance of the hood and improving the balance of the hood in stiffness performance and pedestrian protection performance.

[0034] In some embodiments, see Figures 1 to 3 A weight-reducing hole 101 is opened in the middle of the hood inner panel 10 and a supporting rib 102 is connected in the weight-reducing hole 101 to form a weight-reducing and energy-absorbing area 100; wherein, the boundary of the weight-reducing hole 101 is bent to form a step ring beam 103, and a plurality of first weakened holes 1030 are distributed at intervals on the step ring beam 103, and a plurality of second weakened holes 1020 are distributed at intervals on the supporting rib 102.

[0035] It should be understood that a large-area weight-reducing hole 101 is opened in the middle area of ​​the hood inner panel 10 to form an annular frame structure of the hood inner panel 10, thereby realizing the lightweight design requirements of the engine hood. At the same time, in order to ensure the collision strength requirements of the engine hood, support ribs 102 are arranged in the weight-reducing hole 101 to balance the head-on collision, side collision and crushing deformation performance of the hood inner panel 10. At the same time, the boundary position of the weight-reducing hole 101 is bent to form a step ring beam 103, which can improve the torsional stiffness of the hood inner panel 10, and is also conducive to increasing the area of ​​the weight-reducing hole 101 while meeting the structural strength requirements, thereby promoting the achievement of lightweight indicators.

[0036] In order to improve the compression and dent resistance of the engine hood, the above-mentioned step ring beam 103 and the support ribs 102 are connected to the hood outer panel, thereby avoiding a large area of ​​suspension in the hood outer panel corresponding to the weight reduction hole 101. The compression and dent resistance are improved by supporting the hood outer panel through the step ring beam 103 and the support ribs 102. At the same time, the connection position between the hood inner panel 10 and the hood outer panel can also be increased, thereby improving the overall torsional stiffness of the engine hood, which is beneficial to improving the NVH performance of the engine hood.

[0037] In order to prevent the step ring beam 103 and the support beam from being too rigid and affecting the pedestrian safety protection performance, a first weakening hole 1030 is distributed on the step ring beam 103 and a second weakening hole 1020 is distributed on the support beam. This not only helps to reduce weight, but also can cause the step ring beam 103 to collapse and bend at the position of the first weakening hole 1030 and the support beam to collapse and bend at the position of the second weakening hole 1020 in the event of a collision, thereby providing pedestrian safety protection.

[0038] As a specific structural method of the above-mentioned support rib 102, please refer to Figure 3 The supporting ribs 102 include a cross rib 1021, two angle ribs 1022, and two plate ribs 1023; wherein, the front and rear ends of the cross rib 1021 are respectively connected to the step ring beam 103; the two angle ribs 1022 are symmetrically distributed on both sides of the cross rib 1021, both ends of the two angle ribs 1022 are connected to the step ring beam 103, and the angled parts of the two angle ribs 1022 are respectively connected to the left and right ends of the cross rib 1021; the two plate ribs 1023 are respectively connected to the front ends of the cross rib 1021, and are respectively connected to the step ring beam 103.

[0039] The cross beam and the two angle beams can form a lightening hole 100 as shown in FIG. Figure 3 The double H or double K-shaped support structure shown can, on the one hand, improve the uniform support effect of the support ribs 102 on the hood outer panel at various positions corresponding to the weight-reducing holes 101, thereby improving the compression and dent resistance of the hood outer panel. On the other hand, the two corner ribs 1022 can form a triangular support system with the step ring beam 103, thereby improving the structural strength of the two side areas of the hood inner panel 10. At the same time, the two plate ribs 1023 are used to reinforce the front side positions of the cross ribs 1021, thereby compensating for the strength loss caused by the opening of the weight-reducing holes 101 in the hood inner panel 10, so that the hood inner panel 10 is balanced in terms of compression and collision resistance and pedestrian protection performance. Specifically, the plate ribs 1023 form a triangular or fan-shaped reinforcement structure at the front end of the cross beam, and the support points of the hood outer panel can be increased by connecting the plate ribs 1023 to the hood outer panel, thereby improving the compression and dent resistance of the engine hood.

[0040] Specifically, one of the sides of the above-mentioned corner rib 1022 is aligned with the reinforcing plate 20, thereby establishing a force transmission channel between the corner position of the reinforcing plate 20 and the corner rib 1022, thereby improving the modal performance of the hood inner panel 10, which is beneficial to promoting the improvement of the NVH performance of the engine hood; the above-mentioned first weakened hole 1030 and the second weakened hole 1020 can be rectangular holes, square holes, round holes or elongated holes, or a combination of the above-mentioned multiple shapes of holes.

[0041] As a specific mechanism form of the hood hinge 30, please refer to Figures 4 to 6 The hood hinge 30 includes a fixed end hinge 31, a movable end hinge 32, and at least one hinge arm 33; the fixed end hinge 31 has a vertical mounting surface 311, the movable end hinge 32 is connected to the reinforcement area 200, one end of the hinge arm 33 is hinged to the fixed end hinge 31, and the other end is hinged to the movable end hinge 32; wherein, at least one of the fixed end hinge 31, the movable end hinge 32 and the hinge arm 33 is provided with a bending portion, and each bending portion together forms a bending support structure 300.

[0042] The fixed end hinge 31 is fixed to the engine compartment sheet metal through the vertical mounting surface 311. The fixing method can be screwing, anchoring or welding. Considering the convenience of disassembly and replacement, screwing fixing method can be preferably adopted here. Specifically, bolts are vertically passed through the vertical mounting surface 311 and the engine compartment sheet metal and then screwed with nuts for fixing. In this way, the vertical connection strength between the vertical mounting surface 311 and the engine compartment sheet metal can be ensured by bolts; in order to ensure the opening and closing stability of the engine hood, two hinge arms 33 can be used to connect the fixed end hinge 31 and the movable end hinge 32. At the same time, the bending parts on the fixed end hinge 31, the movable end hinge 32 and the hinge arms 33 are used to make the hood hinge 30 present a bent support state, that is, the above-mentioned bending support structure 300 is formed by the bending part, which can achieve lateral deformation energy absorption while ensuring the vertical support stability to provide pedestrian safety protection.

[0043] Specifically, Figure 5As shown, in this embodiment, the fixed end hinge 31 is provided with a first bending portion 312, and the first bending portion 312 is bent toward one side of the vertical mounting surface 311 to form a hinge mounting surface 3121; the hinge mounting surface 3121 is hinged to one end of the hinge arm 33; wherein, the first bending portion 312 is provided with a first reinforcing rib 3122, and the first reinforcing rib 3122 is opened with a first hollow hole 3123. Here, the offset bending can be understood as the first bending portion 312 first bending horizontally or obliquely toward one side of the vertical mounting surface 311, and then bending upward to form a hinge mounting surface 3121, so that the hinge mounting surface 3121 is located on one side of the vertical mounting surface 311, or the fixed end hinge 31 forms a Z-shaped structure flipped 90 degrees based on the vertical mounting surface 311 and the first bending portion 312. On this basis, the first bending portion 312 is provided with a first reinforcement rib 3122 to improve its vertical support strength, while not affecting its lateral deformation, and is also conducive to achieving lightweight indicators.

[0044] For further information, see Figure 4 The first bent portion 312 is provided with a limiting rib 3124, which is used to vertically abut against the hinge arm 33. The limiting member can be formed by horizontally bending the edge of the first bent portion 312, and the limiting rib 3124 is aligned with the hinge arm 33 in the vertical direction, so that when the engine hood is closed, the limiting rib 3124 can be used to abut and support the hinge arm 33 upward, which can prevent the engine hood from closing too far, and improve the uniformity of the gap when the engine hood is closed.

[0045] On the basis of the above, a limiting bolt 3125 is vertically threaded on the limiting member, and the limiting bolt 3125 is used to vertically abut against the hinge arm 33 to limit the position. The limiting bolt 3125 can be adjusted to adjust the extreme angle of the hinge arm 33, thereby adjusting the closing angle of the engine hood and further adjusting the closing gap of the engine hood.

[0046] Some possible implementations include Figure 5 As shown, the two ends of the hinge arm 33 are bent toward the two sides to form second bent portions 331, wherein the second bent portion 331 at one end is hinged to the fixed end hinge 31, and the second bent portion 331 at the other end is hinged to the movable end hinge 32; wherein, the hinge arm 33 is provided with second reinforcing ribs 3311 at the part between the second bent portions 331 at the two sides. The hinge arm 33 forms a Z-shaped structure based on the second bent portions 331 at the two ends, and the second reinforcing ribs 3311 are used to improve the vertical support strength of the hinge arm 33, and the hinge arm 33 can be bent and deformed laterally at the bent part to absorb energy, thereby providing pedestrian safety protection.

[0047] Alternatively, see Figure 5In this embodiment, the movable end hinge 32 includes a mounting portion 321 and a third bending portion 322. The mounting portion 321 is fixed to the reinforcement area 200, and the third bending portion 322 is bent downward at one side edge of the mounting portion 321 and hinged to the hinge arm 33; wherein, the widths of both ends of the mounting portion 321 gradually narrow, and a third reinforcing rib 3211 is provided in the middle of the mounting portion 321, and a second hollow hole 3212 is opened on the third reinforcing rib 3211.

[0048] The movable end hinge 32 forms an inverted L-shaped structure based on the mounting portion 321 and the third bending portion 322. The mounting portion 321 is fixed to the reinforced area 200 by fitting it, which not only improves the connection reliability but also helps to improve the rigidity of the reinforced area 200. On this basis, the width dimensions of the two ends of the mounting portion 321 are narrowed and a third reinforcing rib 3211 is provided in the middle, which can improve the deformation energy absorption effect at both ends while ensuring the structural rigidity. The third reinforcing rib 3211 can specifically be a convex or concave structure, and its structural reinforcement effect on the mounting portion 321 is mainly reflected in the formation of a convex or concave bending portion. Therefore, a second hollow hole 3212 is provided on the convex or concave rib surface, thereby promoting the achievement of lightweight indicators.

[0049] In some embodiments, Figure 7 As shown, a third weakened hole 21 is provided in the middle of the reinforcing plate 20, and weakened notches 22 are spaced at intervals on the edge of the reinforcing plate 20. Since excessive rigidity at the hinge connection position is not conducive to pedestrian safety protection, a third weakened hole 21 is provided in the middle of the reinforcing plate 20, and a sawtooth structure is formed on the edge based on the weakened notch 22, thereby balancing the rigidity performance and deformation energy absorption effect of the reinforcing area 200, so that the hood tends to be balanced between structural rigidity and pedestrian protection performance.

[0050] Based on the same inventive concept, Figures 1 to 7 It is understood that an embodiment of the present application also provides a vehicle, comprising the above-mentioned engine hood inner panel assembly.

[0051] Compared with the prior art, the vehicle provided in this embodiment adopts the above-mentioned engine hood inner panel assembly, and a reinforcement plate 20 is arranged on the portion of the hood inner panel 10 outside the weight reduction and energy absorption area 100 to form a reinforcement area 200. The connection between the hood hinge 30 and the reinforcement area 200 can improve the stiffness of the connection position of the hood hinge 30. On this basis, the bent support structure 300 formed in the vertical direction of the hood hinge 30 can not only optimize the support stiffness mode of the hood hinge 30, but also facilitate the lateral deformation and energy absorption of the hood hinge 30, thereby improving the pedestrian safety protection performance of the engine hood and improving the balance of the engine hood in stiffness performance and pedestrian protection performance.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The engine hood inner panel assembly is characterized by: The invention comprises a hood inner panel (10), a reinforcement plate (20) and a hood hinge (30); the middle part of the hood inner panel (10) is hollowed out to form a weight-reducing and energy-absorbing area (100); the reinforcement plate (20) is connected to the hood inner panel (10) and forms a reinforcement area (200) outside the weight-reducing and energy-absorbing area (100); the hood hinge (30) is connected to the reinforcement area (200) and has a vertical mounting surface (311) for connecting to an engine compartment sheet metal, and the hood hinge (30) forms a bending support structure (300) in the vertical direction.

2. The engine hood inner panel assembly according to claim 1, characterized in that: A weight-reducing hole (101) is provided in the middle of the hood inner panel (10) and a support rib (102) is connected in the weight-reducing hole (101) to form the weight-reducing and energy-absorbing area (100); wherein the boundary of the weight-reducing hole (101) is bent to form a step ring beam (103), a plurality of first weakened holes (1030) are spaced apart on the step ring beam (103), and a plurality of second weakened holes (1020) are spaced apart on the support rib (102).

3. The engine hood inner panel assembly according to claim 2, characterized in that: The support rib (102) comprises: A cross rib (1021), the front and rear ends of which are respectively connected to the step ring beam (103); Two corner bars (1022) are symmetrically distributed on both sides of the cross bar (1021), both ends of the two corner bars (1022) are connected to the step ring beam (103), and the corner parts of the two corner bars (1022) are respectively connected to the left and right ends of the cross bar (1021); Two plate ribs (1023) are respectively connected to both sides of the front end of the cross rib (1021), and are respectively connected to the step ring beam (103).

4. The engine hood inner panel assembly according to claim 1, characterized in that: The hood hinge (30) includes a fixed end hinge (31), a movable end hinge (32), and at least one hinge arm (33); the fixed end hinge (31) has the vertical mounting surface (311), the movable end hinge (32) is connected to the reinforcement area (200), one end of the hinge arm (33) is hinged to the fixed end hinge (31), and the other end is hinged to the movable end hinge (32); wherein, at least one of the fixed end hinge (31), the movable end hinge (32) and the hinge arm (33) is provided with a bending portion, and each of the bending portions together forms the bending support structure (300).

5. The engine hood inner panel assembly according to claim 4, characterized in that: The fixed end hinge (31) is provided with a first bending portion (312), and the first bending portion (312) is bent toward one side of the vertical mounting surface (311) to form a hinge mounting surface (3121); the hinge mounting surface (3121) is hinged to one end of the hinge arm (33); wherein the first bending portion (312) is provided with a first reinforcing rib (3122), and the first reinforcing rib (3122) is provided with a first hollow hole (3123).

6. The engine hood inner panel assembly according to claim 5, characterized in that: The first bending portion (312) is provided with a limiting rib (3124), and the limiting rib (3124) is used to vertically abut against the hinge arm (33).

7. The engine hood inner panel assembly according to claim 4, characterized in that: The two ends of the hinge arm (33) are respectively bent toward both sides thereof to form a second bent portion (331), wherein the second bent portion (331) at one end is hinged to the fixed end hinge (31), and the second bent portion (331) at the other end is hinged to the movable end hinge (32); wherein the hinge arm (33) is provided with a second reinforcing rib (3311) at a portion between the second bent portions (331) on both sides thereof.

8. The engine hood inner panel assembly according to claim 4, characterized in that: The movable end hinge (32) comprises a mounting portion (321) and a third bending portion (322), wherein the mounting portion (321) is fixedly fitted to the reinforcement area (200), and the third bending portion (322) is bent downward at a side edge of the mounting portion (321) and is hinged to the hinge arm (33); wherein the widths of both ends of the mounting portion (321) gradually narrow, a third reinforcing rib (3211) is provided in the middle of the mounting portion (321), and a second hollow hole (3212) is opened on the third reinforcing rib (3211).

9. The engine hood inner panel assembly according to any one of claims 1 to 8, characterized in that: A third weakened hole (21) is provided in the middle of the reinforcing plate (20), and weakened notches (22) are spaced apart at the edge of the reinforcing plate (20).

10. A vehicle, characterized in that It comprises the engine hood inner panel assembly as described in any one of claims 1 to 9.

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