Front hood assembly and vehicle

Abstract

The application relates to the technical field of vehicle bodies, and provides a front hood assembly and a vehicle. The front hood assembly of the application comprises a front hood outer plate and a front hood inner plate arranged on the side of the front hood outer plate facing the inside of the vehicle; the front hood inner plate comprises a bottom plate body arranged below the front hood outer plate and a side wall plate body bent from the four peripheral edges of the bottom plate body towards the side of the front hood outer plate, and the top of the side wall plate body is fixedly connected to the edge part of the front hood outer plate; a raised part protruding towards the front hood outer plate is formed in the middle of the front hood inner plate, and a weakening structure is arranged on the rear side of the raised part of the front hood inner plate, and the weakening structure is used for inducing the rear part of the front hood inner plate to collapse and absorb energy when the front hood assembly is subjected to a collision. The front hood assembly of the application is provided with the weakening structure on the rear side of the raised part of the front hood inner plate, which is beneficial to improving the collapse and energy absorption performance of the front hood assembly when the front part of the vehicle is subjected to a collision, so that the injury degree when a pedestrian collides with the vehicle is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle body technology, and in particular to a front hood assembly and a vehicle. Background Technology

[0002] While fulfilling its function of covering the front engine compartment, the hood assembly needs to possess a certain structural strength to prevent dents caused by external pressure, which could affect users' concerns about vehicle quality. However, conventional hood designs, which prioritize structural strength, can cause more serious injuries to pedestrians in the event of a vehicle collision, failing to meet pedestrian safety protection requirements. Utility Model Content

[0003] In view of this, this application aims to provide a hood assembly to improve the crumple zone energy absorption performance of the hood assembly during a frontal collision of a vehicle, thereby reducing the degree of injury when colliding with a pedestrian.

[0004] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0005] A hood assembly includes an outer hood panel and an inner hood panel disposed on the side of the outer hood panel facing the vehicle interior. The inner hood panel includes a bottom plate spaced below the outer hood panel and side panels bent from the periphery of the bottom plate towards the outer hood panel. The top of the side panels is fixed to the edge of the outer hood panel. A raised portion protruding towards the outer hood panel is formed in the middle of the bottom plate, and a weakening structure is provided on the inner hood panel behind the raised portion. The weakening structure is used to induce rearward crumple and energy absorption of the inner hood panel when the hood assembly is subjected to a collision.

[0006] Furthermore, a first weight-reduction hole is provided on the top of the raised portion, which corresponds to the storage box inside the forward cabin. A sealing structure is provided between the raised portion and the outer panel of the forward cabin cover. The sealing structure is distributed around the first weight-reduction hole to prevent water stains and dust from entering the storage box inside the cabin through the first weight-reduction hole.

[0007] Furthermore, the top of the raised portion is provided with a glue groove arranged around the first weight reduction hole, and the sealing structure includes sealant disposed in the glue groove, the sealant being bonded between the front hatch outer panel and the raised portion.

[0008] Furthermore, the raised portion has a support beam located in the first weight-reducing hole, and the support beam and the outer panel of the front hatch are bonded together with sealant.

[0009] Furthermore, hinge mounting brackets are provided on the left and right sides of the rear part of the bottom plate. The hinge mounting bracket includes a base plate fixed to the bottom plate and a support arm extending from the edge of the base plate toward the outer front hood plate. The support arm provides support for the outer front hood plate.

[0010] Furthermore, the support arm is provided with a crumple hole, and / or the top of the support arm is bent into a support plate for supporting the outer panel of the front hatch.

[0011] Furthermore, the weakening structure includes a plurality of triangular weakening holes on the side panel body located on the rear side of the inner panel of the front hood, and the triangular weakening holes are arranged at intervals along the left-right direction of the vehicle.

[0012] Furthermore, the weakening structure includes a plurality of second weight-reducing holes disposed on the bottom plate behind the raised portion, and each of the second weight-reducing holes is arranged at intervals along the left-right direction of the vehicle.

[0013] Furthermore, the weakening structure includes a plurality of rectangular weakening holes provided on the rear side plate of the raised portion, and the rectangular weakening holes are arranged at intervals along the left-right direction of the vehicle.

[0014] Compared with related technologies, this application has the following advantages:

[0015] (1) The front hood assembly of this application designs the inner panel of the front hood as a recessed cavity structure. When the inner panel of the front hood is fastened to the outer panel of the front hood, a cavity with a certain space can be formed between the inner panel of the front hood and the outer panel of the front hood, providing a space for deformation buffering when the outer panel of the front hood is subjected to external impact. At the same time, with the help of the raised part in the middle of the bottom plate, reliable support can be provided for the middle of the outer panel of the front hood, improving the situation where the outer panel of the front hood is easily dented when pressed.

[0016] Meanwhile, a weakening structure is provided on the inner panel of the front hood on the rear side of the raised part. When a frontal collision occurs, the weakening structure on the inner panel of the front hood can induce the rear of the front hood assembly to bend and collapse, so as to realize the overall rearward movement of the front hood assembly and buffer energy absorption. This is beneficial to improve the collapse energy absorption performance of the front hood assembly when a frontal collision occurs, thereby reducing the degree of injury when colliding with pedestrians.

[0017] (2) When the front hatch assembly functions as the cover for the storage compartment in the forward engine compartment, the upward-protruding structure of the raised portion effectively increases the volume and storage space height of the storage compartment. A first weight-reducing hole is opened at the top of the raised portion, which further increases the storage space height of the storage compartment while reducing the overall weight of the inner front hatch panel and minimizing material consumption. Based on the arrangement of the raised portion and its top first weight-reducing hole, a sealing structure is provided between the top of the raised portion and the outer front hatch panel. This creates an isolation between the cavity formed between the outer and inner front hatch panels and the first weight-reducing hole, preventing dust, foreign objects, water, etc., from entering the storage compartment through the first weight-reducing hole, thereby improving the waterproof and dustproof performance of the storage compartment.

[0018] (3) By setting an annular groove at the top of the raised portion, a surrounding effect is created around the first weight-reducing hole. When the inner panel of the front hatch is fastened and assembled onto the outer panel of the front hatch, sealant is filled into the groove to achieve bonding and sealing between the top of the raised portion and the outer panel of the front hatch. This not only creates a reliable sealed isolation between the compartment storage box and the chambers between the outer and inner panels of the front hatch, but also improves the connection strength between the outer and inner panels of the front hatch, making the support of the raised portion for the middle of the outer panel of the front hatch more stable and reliable. At the same time, by utilizing the elastic deformation properties of the sealant itself, the sealant can also act as an elastic pad between the outer and inner panels of the front hatch, providing a certain elastic buffering effect.

[0019] (4) Adding a support beam to the first weight-reduction hole can effectively improve the structural strength of the plate at the location of the first weight-reduction hole. At the same time, applying sealant between the support beam and the outer panel of the front hatch can achieve bonding between the support beam and the outer panel of the front hatch, which can further improve the connection strength between the raised part and the outer panel of the front hatch. In specific settings, referring to the setting of the glue groove around the first weight-reduction hole, a glue groove can also be machined on the support beam. When assembling the inner panel and the outer panel of the front hatch, sealant is also filled into the glue groove, thereby completing the bonding and fixing between the support beam and the outer panel of the front hatch.

[0020] (5) Two hinge mounting brackets are respectively set on both sides of the rear of the bottom plate, providing a reliable mounting base for the installation of the support rod hinge of the hood assembly; based on the setting of the hinge mounting bracket, a support arm for supporting the outer hood panel is simultaneously formed on the hinge mounting bracket, which can provide good support for the rear of the outer hood panel in the vehicle height direction; the support arm and the raised part are respectively supported on the rear and middle of the outer hood panel, further improving the compressive strength of the outer hood panel, thereby improving the situation where the outer hood panel is easily dented when pressed.

[0021] (6) Crushing holes are provided on the support arm. When the outer panel of the hood is subjected to a strong external impact, the support arm is more likely to collapse and deform, thereby improving the buffer deformation effect of the outer panel of the hood. The crushing holes, together with the weakening structure set at the rear of the inner panel of the hood, can work together to induce bending and collapse deformation of the rear of the hood assembly, so as to further improve the energy absorption effect of the hood assembly during a frontal collision. A support plate for supporting the outer panel of the hood is formed by bending the top of the support arm. This can effectively increase the contact area between the hinge mounting bracket and the outer panel of the hood, thereby improving the support stability. At the same time, based on the setting of the support plate, a groove can also be machined on the support plate and filled with sealant to achieve the bonding and fastening of the support plate and the outer panel of the hood.

[0022] (7) Triangular weakening holes are opened on the side panel at the rear of the inner panel of the hood. While ensuring that the triangular weakening holes have a certain supporting function, they also make it easier for the triangular weakening holes to bend and deform in the vertical and horizontal directions of the vehicle. This is to meet the need for the rear of the hood assembly to bend and collapse when the hood assembly is subjected to a strong external impact, thereby improving its crumple energy absorption effect and reducing the degree of injury when colliding with pedestrians.

[0023] (8) A second weight-reducing hole is provided on the bottom plate between the rear side panel and the raised part, which makes the bottom plate of this part more likely to bend and deform in the front-rear and left-right directions of the vehicle, so that when the front hood assembly is subjected to a strong external impact, the rear part of the front hood assembly will bend, collapse and shrink, thereby achieving the purpose of buffering energy absorption and protecting pedestrians.

[0024] (9) By opening rectangular weakening holes on the rear side plate of the raised part, the bending deformation capacity of the rear side of the raised part can be improved, so that when the front hatch assembly is subjected to a strong external impact, the middle and rear part of the front hatch assembly will be bent, collapsed and crushed, thereby achieving the purpose of buffering energy absorption and protecting pedestrians.

[0025] Another object of this application is to provide a vehicle that employs the hood assembly described in this application. The vehicle of this application possesses the technical advantages of the aforementioned hood assembly. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application. The directional terms such as front / back, up / down, etc., used therein are only used to indicate relative positional relationships and do not constitute an improper limitation of this application. In the accompanying drawings:

[0027] Figure 1 This is a three-dimensional structural diagram of the front hood assembly described in the embodiments of this application;

[0028] Figure 2 This is a bottom view of the front hood assembly described in the embodiments of this application;

[0029] Figure 3 for Figure 1 The exploded view of the front hood assembly shown;

[0030] Figure 4 This is a top view of the hood assembly described in the embodiments of this application, with the outer hood panel removed.

[0031] Figure 5 for Figure 2 Cross-sectional view at position AA in the middle;

[0032] Figure 6 for Figure 2 Cross-sectional view at the location shown in BB.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Front hood outer panel; 100mm edging;

[0035] 2. Front hatch inner panel; 2a. Bottom panel; 2b. Side panel; 20. Raised section; 201. First weight reduction hole; 202. Support beam; 203. Rectangular weakening hole; 21. Second weight reduction hole; 22. Triangular weakening hole; 23. Flanged edge; 24. Slot; 240. Hood lock mounting hole; 25. Hinge mounting hole;

[0036] 3. Hinge mounting bracket; 30. Base plate; 31. Support arm; 310. Collapse hole; 311. Support plate; 32. Mounting bolt;

[0037] 4. Machine cover lock mounting plate; 40. Welded nut; 41. First rivet;

[0038] 5. Front bracket; 50. Top plate; 51. Support leg; 510. Support foot; 52. Second rivet; 6. Glue groove; 7. Sealant. Detailed Implementation

[0039] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0041] Furthermore, it should be stated in the description of this application that if terms indicating orientation or positional relationship, such as "up," "down," "left," "right," "front," "rear," "inner," and "outer," appear, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and for clarity and conciseness of expression, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this application. Taking the vehicle described in this application as an example, the directional terms such as "up," "down," "left," "right," "front," and "rear" used in the embodiments are defined based on the vehicle's vertical direction (also known as the height direction), horizontal direction (also known as the width direction), and front-back direction (also known as the length direction). Specifically, as shown in the accompanying drawings, the X direction is the vehicle's front-back direction, where the side pointed by the arrow is "front," and the opposite is "rear." The Y direction is the vehicle's horizontal direction, where the side pointed by the arrow is "left," and the opposite is "right." The Z direction is the vehicle's vertical direction, where the side pointed by the arrow is "up," and the opposite is "down." "," "Inner" and "outer" are defined based on the outline of the corresponding component. For example, "inner" and "outer" are defined based on the outline of the vehicle. The side of the vehicle outline closer to the middle of the vehicle is "inner", and the other side is "outer".

[0042] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joint," and "connector" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances. The qualifying terms such as "first," "second," "A," "B," "C," and "D" appearing in the description of this application are merely for distinguishing similar features in different locations, attributions, or uses, in order to avoid ambiguity and confusion, and should not be construed as indicating or implying relative importance.

[0043] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] In related technologies, the hood assembly, while fulfilling its function of covering the front engine compartment, needs to possess a certain structural strength to prevent denting due to external pressure. However, conventional hood structures, designed primarily for structural strength, can cause serious injuries to pedestrians in the event of a vehicle collision, failing to meet pedestrian safety requirements. Simultaneously, with the development of new energy technologies, vehicle power configurations are becoming increasingly diversified. Therefore, the front engine compartment may not require engines, transmissions, or other such components, leaving space for storage compartments. In this case, the hood assembly, while serving an important decorative function at the front of the vehicle, also functions as a cover for these storage compartments. Conventional hood structures, integrated with the engine compartment frame and accessories, do not prioritize the sealing of these storage compartments, thus posing a risk of water and soil ingress, failing to meet the storage needs of the front engine compartment.

[0045] In view of the above-mentioned problems in the related technologies, this application innovatively proposes a brand-new front hood assembly that can improve the crumple zone energy absorption performance of the front hood assembly in the event of a frontal collision of a vehicle, thereby reducing the degree of injury when colliding with pedestrians.

[0046] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0047] An embodiment of the first aspect of this utility model provides a front hood assembly, one exemplary structure of which is as follows: Figure 1 , Figure 2 and Figure 3 As shown.

[0048] Overall, the hood assembly includes an outer hood panel 1 and an inner hood panel 2 located on the side of the outer hood panel 1 facing the vehicle interior. The inner hood panel 2 includes a bottom panel 2a spaced below the outer hood panel 1 and side panels 2b bent from the perimeter of the bottom panel 2a toward the outer hood panel 1. The top of the side panels 2b is fixed to the edge of the outer hood panel 1. Furthermore, a raised portion 20 protruding toward the outer hood panel 1 is formed in the center of the bottom panel 2a, and a weakening structure is provided on the inner hood panel 2 behind the raised portion 20. This weakening structure is used to induce rearward crumple and energy absorption of the inner hood panel 2 in the event of a collision.

[0049] Through the aforementioned overall design, the raised portion 20 located in the middle of the bottom plate 2a provides reliable support for the middle of the outer hood panel 1, mitigating the problem of the outer hood panel 1 easily denting when pressed. Furthermore, a weakening structure is provided on the inner hood panel 2 behind the raised portion 20. In the event of a frontal collision, the weakening structure on the inner hood panel 2 induces bending and collapse deformation of the rear of the hood assembly, achieving overall rearward movement and energy absorption of the hood assembly. This improves the crumple zone energy absorption performance of the hood assembly during a frontal collision, thereby reducing the severity of injury to pedestrians.

[0050] It should be noted that, based on the above-mentioned overall design concept, the technical solution of this application can adopt a variety of different specific implementation structures, forms, or configuration sequences. For example, the aforementioned weakening structure can adopt various specific structural forms such as thinning the plate body or opening holes in the plate body; the number and position of the weakening structure can be flexibly arranged according to the overall shape design of the rear of the inner front hatch panel 2. The fastening assembly of the inner front hatch panel 2 on the outer front hatch panel 1 can adopt assembly methods such as welding or edge pressing. For the parts required for the implementation of the overall solution but not involved in the above overall setup, reasonable and flexible designs can be made by referring to mature setup methods in the field and the actual situation during implementation, which will not be elaborated here. The specific implementation schemes described below in this embodiment are only one of the many solutions that can be formed by the above-mentioned combinations and variations. In actual implementation, those skilled in the art can make flexible adjustments and improvements based on the actual situation. Obviously, the various solutions that can be formed by the above-mentioned combinations and variations, as well as the specific implementation schemes of this embodiment, are all within the protection scope of this application.

[0051] like Figure 3 and Figure 4 As shown, in some preferred exemplary embodiments, the top of the raised portion 20 of this embodiment is provided with a first weight-reducing hole 201, which corresponds to the storage box inside the front cabin. Moreover, a sealing structure is provided between the raised portion 20 and the outer panel 1 of the front hatch. The sealing structure is distributed around the first weight-reducing hole 201 and is isolated between the cavity formed between the inner panel 2 of the front hatch and the outer panel 1 of the front hatch and the first weight-reducing hole 201. This can prevent water stains, dust, etc. in the cavity from entering the storage box inside the cabin through the first weight-reducing hole 201.

[0052] With the front hatch assembly serving as the cover for the storage compartment in the forward engine compartment, the upward-protruding structure of the raised portion 20 effectively increases the volume and storage space height of the storage compartment. A first weight-reducing hole 201 is provided at the top of the raised portion 20, which further increases the storage space height of the storage compartment while reducing the overall weight of the inner front hatch panel 2 and minimizing material consumption. Based on the arrangement of the raised portion 20 and its top first weight-reducing hole 201, a sealing structure is provided between the top of the raised portion 20 and the outer front hatch panel 1. This isolates the cavity formed between the outer front hatch panel 1 and the inner front hatch panel 2 from the first weight-reducing hole 201, preventing dust, foreign objects, water, etc., from entering the storage compartment through the first weight-reducing hole 201, thereby improving the waterproof and dustproof performance of the storage compartment.

[0053] Of course, the sealing structure described above can also employ various sealing methods such as gaskets, sealing bodies, and sealing adhesives. In this embodiment, for example... Figure 3 As shown, the top of the raised portion 20 is provided with a glue groove 6 arranged around the first weight-reducing hole 201. The sealing structure includes sealant 7 disposed in the glue groove 6. When the inner front hatch panel 2 is fastened and assembled onto the outer front hatch panel 1, the sealant 7 will adhere between the outer front hatch panel 1 and the inner front hatch panel 2. By providing an annular glue groove 6 at the top of the raised portion 20, a surrounding effect is formed on the first weight-reducing hole 201. When the inner front hatch panel 2 is fastened and assembled onto the outer front hatch panel 1, the glue groove 6 is filled with sealant 7, achieving adhesion and sealing between the top of the raised portion 20 and the outer front hatch panel 1. This not only forms a reliable sealed isolation between the in-cabin storage box and the chambers between the outer front hatch panel 1 and the inner front hatch panel 2, but also improves the connection strength between the outer front hatch panel 1 and the inner front hatch panel 2, making the support of the raised portion 20 for the middle of the outer front hatch panel 1 more stable and reliable. At the same time, thanks to the elastic deformation properties of the sealant 7 itself, the sealant 7 can also play a similar role as an elastic pad between the outer panel 1 and the inner panel 2 of the front hatch, thus providing a certain elastic cushioning effect.

[0054] Based on the above settings, continue as follows: Figure 3 , Figure 4As shown, in some of the more preferred exemplary embodiments, the raised portion 20 has a support beam 202 located in the first weight reduction hole 201, and a sealant 7 is bonded between the support beam 202 and the outer panel 1 of the front hood. Adding the support beam 202 in the first weight reduction hole 201 can effectively improve the structural strength of the plate body at the location of the first weight reduction hole 201. At the same time, by setting the sealant 7 between the support beam 202 and the outer panel 1 of the front hood to achieve bonding between the support beam 202 and the outer panel 1 of the front hood, the connection strength between the raised portion 20 and the outer panel 1 of the front hood can be further improved. When specifically setting, referring to the setting of the glue groove 6 around the first weight reduction hole 201, a glue groove 6 is also machined on the support beam 202. When assembling the inner panel 2 of the front hood and the outer panel 1 of the front hood, the sealant 7 is also filled into this glue groove 6, thereby completing the bonded connection between the support beam 202 and the outer panel 1 of the front hood.

[0055] Of course, one or more of the above support beams 202 can be provided, and the setting direction of the support beam 202 can be horizontal or vertical. In this embodiment, a support beam 202 is provided in the middle of the first weight reduction hole 201, and this support beam 202 is arranged along the vehicle width direction. The support beam 202 and the frame around the first weight reduction hole 201 together form a "day" - shaped support frame, which supports on the inner side of the outer panel 1 of the front hood.

[0056] It should be noted that since the sealant 7 located around the first weight reduction hole 201 needs to play a role in sealing and isolation, the sealant 7 should be continuously filled in the glue groove 6 around the first weight reduction hole 201 to form a closed - loop shape at this place; the sealant 7 in the glue groove 6 of the support beam 202 can be set flexibly, which can be multiple discontinuous segments or a continuous whole segment.

[0057] Continue still as Figure 3 and Figure 4 As shown, in some of the more preferred exemplary embodiments, hinge mounting brackets 3 are respectively provided on the left and right sides of the rear part of the bottom plate body 2a of this embodiment. The hinge mounting bracket 3 includes a base plate 30 fixedly connected to the bottom plate body 2a and a support arm 31 extending from the edge of the base plate 30 towards the outer panel 1 of the front hood; among them, the support arm 31 forms a support for the outer panel 1 of the front hood. By respectively providing two hinge mounting brackets 3 on both sides of the rear part of the bottom plate body 2a, a reliable installation foundation is provided for the installation of the support rod hinge of the front hood assembly; based on the setting of the hinge mounting bracket 3, the support arm 31 for supporting the outer panel 1 of the front hood is formed on the hinge mounting bracket 3 at the same time, which can form a good support for the rear part of the outer panel 1 of the front hood in the vehicle height direction; the support arm 31 and the raised portion 20 respectively support the rear part and the middle part of the outer panel 1 of the front hood, further improving the anti - pressing strength of the outer panel 1 of the front hood, thus improving the situation that the outer panel 1 of the front hood is easily dented when pressed.

[0058] Of course, the aforementioned support arm 31 can adopt various different specific structural forms; in some preferred exemplary embodiments, the support arm 31 is provided with a collapse hole 310, and a support plate 311 for supporting the outer panel 1 of the front hood is bent at the top of the support arm 31. Obviously, the collapse hole 310 and the support plate 311 can be flexibly selected to be provided on the support arm 31, and it is also feasible to provide the collapse hole 310 alone or the support plate 311 alone. Specifically, in this embodiment, the support arm 31 is provided at the inner edge of the base plate 30, extends upward from the inner edge of the support arm 31, and is inclined towards the middle of the inner panel 2 of the front hood. The support plate 311 is bent at the top of the support arm 31, and the collapse hole 310 is provided on the upwardly extending main body of the support arm 31.

[0059] A crumple hole 310 is provided on the support arm 31. When the outer panel of the hood 1 is subjected to a strong external impact, the support arm 31 is more likely to collapse and deform, thereby improving the buffer deformation effect of the outer panel of the hood 1. The crumple hole 310, together with the weakening structure provided at the rear of the inner panel of the hood 2, can work together to induce the rear of the hood assembly to bend and collapse, so as to further improve the crumple energy absorption effect of the hood assembly when the vehicle is involved in a frontal collision.

[0060] A support plate 311 is formed by bending the top of the support arm 31 to support the outer panel of the front hatch 1, which can effectively increase the contact area between the hinge mounting bracket 3 and the outer panel of the front hatch 1, thereby improving the support stability. At the same time, based on the setting of the support plate 311, a glue groove 6 can also be processed on the support plate 311 and filled with sealant 7 to achieve the bonding and fastening of the support plate 311 and the outer panel of the front hatch 1.

[0061] Regarding the specific location and form of the weakening structure, as mentioned above, there are naturally many different structural options available. In this embodiment, such as... Figure 4 and combined Figure 5 , Figure 6 As shown, the weakening structure includes three locations: multiple triangular weakening holes 22 on the side panel 2b on one side of the rear of the inner panel 2 of the front hatch, multiple second weight reduction holes 21 on the bottom panel 2a behind the raised portion 20, and multiple rectangular weakening holes 203 on the rear side panel of the raised portion 20.

[0062] The triangular weakening holes 22 on the side panel 2b located on the rear side of the inner hood panel 2 are arranged at intervals along the left-right direction of the vehicle. While all the triangular weakening holes 22 can be of a uniform size, it is preferable to make the central triangular weakening hole 22 larger, with the size gradually decreasing from the center of the side panel 2b towards the left and right sides of the inner hood panel 2. This arrangement and size variation design is suitable for the gradual change in the height of the triangular weakening holes 22. The triangular weakening holes 22 on the rear side panel 2b of the inner hood panel 2 ensure that they provide some support while also making them more prone to bending and deformation in the vertical and horizontal directions of the vehicle. This accommodates the need for the rear of the hood assembly to bend and collapse under strong external impacts, improving its crumple zone energy absorption effect and thus reducing the severity of injury in a pedestrian collision.

[0063] The second weight-reducing holes 21 located on the bottom plate 2a behind the raised portion 20 are also arranged at intervals along the left-right direction of the vehicle. There can be one or more of them; in this embodiment, there are three second weight-reducing holes 21, with the second weight-reducing hole 21 located in the middle of the bottom plate 2a being larger, and the two second weight-reducing holes 21 located on either side of the middle second weight-reducing hole 21 being smaller. Providing the second weight-reducing holes 21 on the bottom plate 2a between the rear side panel 2b and the raised portion 20 makes it easier for the bottom plate 2a in this area to bend and deform in the front-rear and left-right directions of the vehicle. This allows the rear of the hood assembly to bend, collapse, and crumble when subjected to a strong external impact, thereby achieving the purpose of buffering energy absorption and protecting pedestrians.

[0064] The rectangular weakening holes 203 located on the rear side panel of the raised portion 20 are also arranged at intervals along the left-right direction of the vehicle. By opening the rectangular weakening holes 203 on the rear side panel of the raised portion 20, the bending deformation capacity of the rear side of the raised portion 20 can be improved, so that when the hood assembly is subjected to a strong external impact, the middle and rear part of the hood assembly can be induced to bend, collapse and crumble, thereby achieving the purpose of buffering energy absorption and protecting pedestrians.

[0065] Based on the above exemplary embodiments, as a preferred combination of the exemplary solutions, refer to Figures 1 to 6 As shown, the following overall scheme can be referred to when implementing the front hood assembly of this embodiment.

[0066] A flange 23, bent outwards toward the inner front hood panel 2, is formed on the top of the side panel 2b. A edging 100 is provided at the edge of the outer front hood panel 1. When the inner front hood panel 2 is fastened to the outer front hood panel 1, the flange 23 is located at the edging 100. Through press fitting, the edging 100 wraps around the flange 23, completing the assembly between the inner and outer front hood panels 2 and 1. Simultaneously, a recess 24 is provided at the front of the bottom panel 2a. The recess 24 contains a hood lock mounting plate 4 and a front bracket 5. The hood lock mounting plate 4 can be fixed to the inner front hood panel 2 using a first rivet 41 for hood lock installation and fixation. The front bracket 5 includes a top plate 50 and a leg 51 extending downwards from the top plate 50. The bottom end of the leg 51 is bent into a foot 510, which is fixed to the inner front hood panel 2 by a second rivet 52. The placement of the sinkhole 24 provides good space for the installation of the hood lock mounting plate 4 and the front bracket 5, as well as the installation of the hood lock; the placement of the front bracket 5 can provide good support for the front of the front hatch outer plate 1.

[0067] During installation, a hood lock mounting hole 240 is provided at the bottom of the trough 24, corresponding to the mounting holes on the hood lock mounting plate 4, for installing and fixing the hood lock. A welding nut 40 is also provided on the hood lock mounting plate 4 for installing the hood lock. When installing the hinge mounting bracket 3, use mounting bolts 32 to pass through the hinge mounting holes 25 on the bottom plate 2a, and tighten the nuts to fix the hinge mounting bracket 3 to the inner plate 2 of the front hatch.

[0068] In addition, a raised portion 20 is provided in the middle of the bottom plate 2a. A first weight reduction hole 201 and a sealant 7 surrounding the first weight reduction hole 201 are provided on the top of the raised portion 20. At the same time, hinge mounting brackets 3 are provided on both sides of the rear part of the bottom plate 2a. The support arm 31 of the hinge mounting bracket 3 extends upward along the Y direction of the vehicle and is inclined inward relative to the plane located in the XZ direction of the vehicle. The support arm 31 can ensure that the outer panel of the hood has a certain degree of dent resistance. The crumple hole 310 on the support arm 31 can cause the support arm 31 to bend and deform when the outer panel of the hood 1 is subjected to a strong impact, thereby improving the pedestrian collision safety performance of the hood assembly. Furthermore, sealant 7 is also provided on the top plate 50 and the support plate 311. The sealant 7 on the raised part 20, the support plate 311, the top plate 50, etc., is bonded to the outer panel 1 of the front hatch, thereby forming multiple bonding points between the inner panel 2 of the front hatch and the outer panel 1 of the front hatch, which greatly improves the connection reliability between the outer panel 1 of the front hatch and the inner panel 2 of the front hatch.

[0069] Based on the provision of the raised portion 20, a plurality of triangular weakening holes 22 are provided on the side wall panel body 2b behind the raised portion 20; each triangular weakening hole 22 gradually becomes smaller from the middle of the side wall panel body 2b to both sides, and each triangular weakening hole 22 is symmetrically arranged; on the bottom panel body 2a behind the raised portion 20, three second weight reduction holes 21 are provided, and a plurality of rectangular weakening holes 203 are also provided on the rear panel body of the raised portion 20. Similar to the arrangement of the triangular weakening holes 22, each of the second weight reduction holes 21 on the bottom panel body 2a and each of the rectangular weakening holes 203 on the rear panel body of the raised portion 20 are symmetrically arranged about the central axis of the vehicle. Through the provision of the weakening structures at the above-mentioned locations, from Figure 5 and Figure 6 it can be seen that in the X and Y directions of the vehicle, the cross-section of the chamber between the outer front hood panel 1 and the inner front hood panel 2 is in a disconnected form. When the front hood assembly collides, the rear part of the front hood assembly is easily bent and collapsed, causing the entire front hood assembly to collapse and absorb energy, thereby improving the safety performance of the vehicle during a collision.

[0070] Based on the setting of the raised portion 20 in the middle of the bottom panel body 2a, a ring-shaped sealant 7 is arranged around the first weight reduction hole 201 at the top of the raised portion 20 and is adhesively fixed to the outer front hood panel 1, which can prevent water, soil, etc. in the area outside the配合环形的密封胶7外侧区域 (the outer area of the ring-shaped sealant 7) from entering the in-cabin storage box below the first weight reduction hole 201. At the same time, a support beam 202 is provided in the middle of the first weight reduction hole 201, and a number of sealants 7 are evenly arranged on the support beam 202 and adhesively bonded to the outer front hood panel 1 to form a support structure in the overall shape of a "day" character, which can avoid the problem of deformation caused by the lack of support in a large area in the middle of the outer front hood panel 1 and too weak stiffness.

[0071] In summary, for the front hood assembly of this embodiment, the inner front hood panel 2 is designed as a sunken cavity structure. After the inner front hood panel 2 is buckled on the outer front hood panel 1, a chamber with a certain space can be formed between the inner front hood panel 2 and the outer front hood panel 1, providing a space for deformation buffer when the outer front hood panel 1 is subjected to an external impact; at the same time, with the help of the raised portion 20 provided in the middle of the bottom panel body 2a, reliable support can be provided for the middle of the outer front hood panel 1, improving the situation where the outer front hood panel 1 is easily indented when pressed. And, a weakening structure is provided on the inner front hood panel 2 behind the raised portion 20. When a collision occurs at the front of the vehicle, the part where the weakening structure is located on the inner front hood panel 2 can induce bending and collapse deformation of the rear part of the front hood assembly, so as to achieve the overall rearward movement and buffer energy absorption of the front hood assembly, which is beneficial to improving the collapse and energy absorption performance of the front hood assembly during a front collision of the vehicle, thereby reducing the degree of injury when colliding with pedestrians.

[0072] An embodiment of the second aspect of this application provides a vehicle, and this vehicle adopts the front hood assembly provided in the first embodiment.

[0073] In view of the structural design problems of conventional front hoods in the related art, and in view of the need for pedestrian safety protection during frontal collisions of vehicles and the waterproof and dustproof requirements of the in-cabin storage box, the front hood assembly of the present application can be adopted to well solve the problems existing in the related art.

[0074] By adopting the front hood assembly of the present application on a vehicle, especially in models with a relatively low front part such as sedans and sports cars, when a collision occurs, the pedestrian's head is extremely likely to collide with the rear area of the outer panel 1 of the front hood; by designing multiple weakening structures in this area, on the premise of meeting the anti-pressing stiffness of the outer panel 1 of the front hood, the rear structure of the front hood assembly is in a disconnected form in the cavity cross-sections in the vehicle X-Z and Y-Z directions, which can meet the needs of crush energy absorption when the human head contacts the outer panel 1 of the front hood during a collision, thereby reducing the injury value and improving the pedestrian protection effect.

[0075] To meet the storage, waterproof and dustproof requirements of the in-cabin storage box, a raised portion 20 is provided on the inner panel 2 of the front hood at the top of the in-cabin storage box, and an annular sealant 7 is provided between the top of the raised portion 20 and the outer panel 1 of the front hood. The area inside the annular sealant 7 is the storage area, which can prevent water, dust, etc. outside it from entering the in-cabin storage box through the first weight reduction hole 201, realizing good storage function requirements; a support beam 202 is provided in the middle of the first weight reduction hole 201, and a number of sealants 7 are evenly arranged on the support beam 202 and bonded to the outer panel 1 of the front hood, forming a support structure in the overall shape of a "day" character, which can avoid the problem that a relatively large area in the middle of the outer panel 1 of the front hood has no support and is too weak in stiffness, resulting in deformation.

[0076] The above description is only a preferred embodiment of the present application. The detailed explanation of the configuration, the examples of specific structural settings, or the description of the assembly connection method, etc., are all for the need of full disclosure, so that those skilled in the art can better implement the present application, rather than being used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A front hood assembly, characterized in that: Includes an outer hood panel (1) and an inner hood panel (2) disposed on the side of the outer hood panel (1) facing the interior of the vehicle; The inner front hatch panel (2) includes a bottom panel (2a) spaced below the outer front hatch panel (1) and a side panel (2b) bent from the four edges of the bottom panel (2a) toward the outer front hatch panel (1). The top of the side panel (2b) is fixed to the edge of the outer front hatch panel (1). The bottom plate (2a) has a raised portion (20) formed in the middle that protrudes toward the outer front hatch panel (1), and a weakening structure is provided on the inner front hatch panel (2) behind the raised portion (20). The weakening structure is used to induce the rear of the inner front hatch panel (2) to collapse and absorb energy when the front hatch assembly is subjected to a collision.

2. The front hood assembly according to claim 1, characterized in that: The top of the raised portion (20) is provided with a first weight reduction hole (201), which corresponds to the storage box inside the front cabin. A sealing structure is provided between the raised portion (20) and the outer panel (1) of the front cabin cover. The sealing structure is distributed around the first weight reduction hole (201) to prevent water stains and dust from entering the storage box through the first weight reduction hole (201).

3. The front hood assembly according to claim 2, characterized in that: The top of the raised portion (20) is provided with a glue groove (6) arranged around the first weight reduction hole (201). The sealing structure includes a sealant (7) disposed in the glue groove (6). The sealant (7) is bonded between the front hatch outer panel (1) and the raised portion (20).

4. The front hood assembly according to claim 2, characterized in that: The raised portion (20) has a support beam (202) located in the first weight reduction hole (201), and the support beam (202) and the front hatch outer panel (1) are bonded together with sealant (7).

5. The front hood assembly according to claim 1, characterized in that: The bottom plate (2a) is provided with hinge mounting brackets (3) on the left and right sides of the rear part. The hinge mounting bracket (3) includes a base plate (30) fixed to the bottom plate (2a) and a support arm (31) extending from the edge of the base plate (30) toward the front hatch outer plate (1). The support arm (31) provides support for the front hatch outer plate (1).

6. The front hood assembly according to claim 5, characterized in that: The support arm (31) is provided with a collapse hole (310), and / or the top of the support arm (31) is bent to form a support plate (311) for supporting the front hatch outer panel (1).

7. The front hood assembly according to any one of claims 1 to 6, characterized in that: The weakening structure includes a plurality of triangular weakening holes (22) on the side panel (2b) on the rear side of the inner panel (2) of the front hood, and the triangular weakening holes (22) are arranged at intervals along the left and right direction of the vehicle.

8. The front hood assembly according to any one of claims 1 to 6, characterized in that: The weakening structure includes a plurality of second weight-reducing holes (21) located on the bottom plate (2a) behind the raised portion (20), and each of the second weight-reducing holes (21) is arranged at intervals along the left-right direction of the vehicle.

9. The front hood assembly according to any one of claims 1 to 6, characterized in that: The weakening structure includes a plurality of rectangular weakening holes (203) provided on the rear side plate of the raised portion (20), and each of the rectangular weakening holes (203) is arranged at intervals along the left and right direction of the vehicle.

10. A vehicle, characterized in that: The vehicle uses the hood assembly according to any one of claims 1 to 9.

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