Rear door reinforcement structure and vehicle

Abstract

This application relates to a tailgate reinforcement structure and vehicle, belonging to the field of vehicle tailgate connection technology. It includes: a taillight mounting plate, a hinge mounting plate, a first reinforcing plate, and a pillar reinforcing plate. The taillight mounting plate has a hinge area with multiple first mounting holes. The hinge mounting plate is disposed on the taillight mounting plate, and the mounting plate has second mounting holes corresponding to the first mounting holes. The first reinforcing plate is disposed on the side of the hinge mounting plate away from the taillight mounting plate. The pillar reinforcing plate is disposed on the side of the first reinforcing plate away from the hinge mounting plate. The first reinforcing plate is connected to both the hinge mounting plate and the pillar reinforcing plate. The first reinforcing plate enables multiple paths of force transmission, thereby distributing the weight of the tailgate assembly to the vehicle body and effectively reducing the occurrence of tailgate assembly sagging.

Description

Technical Field

[0001] This application relates to the technical field of vehicle tailgate connection, and more particularly to a tailgate reinforcement structure and a vehicle. Background Technology

[0002] In modern automotive design, the hinge reinforcement structure of the tailgate is a crucial component ensuring the normal opening and closing of the tailgate, load-bearing capacity, and overall vehicle body structural stability. It not only relates to the vehicle's ease of use but also its safety and durability. Traditional tailgate side hinge reinforcement structures primarily utilize sheet metal components, employing specific structural designs to support and secure the tailgate, meeting various needs in daily vehicle use.

[0003] However, the traditional side-hinged tailgate structure has several shortcomings. First, the traditional structure uses thicker materials, which increases the vehicle's weight and hinders lightweight design. Second, the traditional structure's force transmission mechanism is inefficient, relying solely on the taillight mounting plate assembly to bear the tailgate's downward force. This results in a weak structural load-bearing capacity and a tendency for excessive tailgate sagging. Utility Model Content

[0004] This application addresses, to at least some extent, one of the technical problems in the related art.

[0005] Therefore, this application aims to provide a tailgate reinforcement structure and vehicle, which realizes the transmission of force through multiple paths through the first reinforcement plate, thereby dispersing the gravity of the tailgate assembly to the vehicle body and effectively reducing the occurrence of tailgate assembly sagging problem.

[0006] To achieve the above objectives, in a first aspect, this application provides a back door reinforcement structure, comprising:

[0007] A taillight mounting plate having a hinge area; the hinge area having a plurality of first mounting holes;

[0008] A hinge mounting plate is disposed on the taillight mounting plate; the mounting plate has a second mounting hole corresponding to the first mounting hole;

[0009] A first reinforcing plate is disposed on the side of the hinge mounting plate away from the taillight mounting plate;

[0010] A pillar reinforcement plate is disposed on the side of the first reinforcement plate away from the hinge mounting plate;

[0011] The first reinforcing plate is connected to both the hinge mounting plate and the vehicle pillar reinforcing plate.

[0012] In this technical solution, the hinge area is used to install the hinge structure, and the weight of the tailgate assembly is transferred to the hinge structure. Through the structure of this application, the weight of the tailgate assembly is transferred to the hinge mounting plate via the hinge area; part of the force is transferred to the vehicle body via the hinge mounting plate, and another part is transferred to the pillar reinforcement plate via the first reinforcement plate, and then to the vehicle body via the pillar reinforcement plate. This achieves two force transmission paths to distribute the weight of the tailgate assembly, reducing the probability of tailgate assembly sagging. Furthermore, the first and second mounting holes facilitate the connection of the hinges.

[0013] In some embodiments of this application, the first reinforcing plate is made of die-cast aluminum.

[0014] In this technical solution, compared to traditional steel, die-cast aluminum offers advantages such as light weight, high strength, and good corrosion resistance. While ensuring structural strength, it can significantly reduce the weight of the back door reinforcement structure.

[0015] In some embodiments of this application, the first reinforcing plate is connected to the hinge mounting plate by a first fastener;

[0016] The first reinforcing plate has a third mounting hole corresponding to the second mounting hole.

[0017] In this technical solution, the connection strength between the first reinforcing plate and the hinge mounting plate is improved, facilitating the transmission of forces acting on the hinge mounting plate. Furthermore, the third mounting hole facilitates hinge connection, allowing a portion of the weight of the tailgate assembly to be directly transferred to the first reinforcing plate.

[0018] In some embodiments of this application, it further includes:

[0019] The second reinforcing plate is located on the side of the pillar reinforcing plate away from the first reinforcing plate;

[0020] The inner panel of the vehicle pillar is located on the side of the second reinforcing plate away from the vehicle pillar reinforcing plate;

[0021] The second reinforcing plate is connected to both the pillar reinforcing plate and the pillar inner plate.

[0022] In this technical solution, the weight of the door assembly, which is transferred to the pillar reinforcement plate, is diverted. Part of it is transferred to the vehicle body through the pillar reinforcement plate; the other part is transferred to the inner panel of the main body through the second reinforcement plate, and then from the inner panel to the vehicle body. Through this multi-layered connection and reinforcement, the downward force of the tailgate can be better distributed to multiple components such as the inner panel of the pillar, the pillar reinforcement plate, and the first reinforcement plate, forming a more stable load-bearing system. This effectively reduces the probability of structural deformation or damage caused by excessive local stress, and further improves the load-bearing capacity and overall performance of the tailgate reinforcement structure.

[0023] In some embodiments of this application, the second reinforcing plate is attached to and connected to the vehicle pillar reinforcing plate at its center; the edge of the second reinforcing plate extends toward the inner panel of the vehicle pillar and is connected to the inner panel of the vehicle pillar.

[0024] In this technical solution, the structural design makes the connection between the second reinforcing plate, the pillar reinforcing plate, and the pillar inner panel tighter and more robust, forming a more integrated reinforcing structure. It can more effectively transfer force from the pillar reinforcing plate to the pillar inner panel, further optimizing the force transmission path, enhancing the deformation resistance and load-bearing capacity of the entire pillar structure, and improving the stability and reliability of the tailgate reinforcing structure during use.

[0025] In some embodiments of this application, a first threaded connector is further included, which passes through the second reinforcing plate and the vehicle pillar reinforcing plate and is threadedly connected to the first reinforcing plate.

[0026] In this technical solution, the threaded connection method has advantages over other connection methods, such as high connection strength, good reliability, and ease of installation and disassembly. It can tightly connect the second reinforcing plate, the pillar reinforcing plate, and the first reinforcing plate together to form a more stable through structure, further enhancing the load-bearing capacity and stability of the entire tailgate reinforcing structure, while also improving production efficiency and maintenance convenience.

[0027] In some embodiments of this application, the number of the first threaded connectors and the number of the third mounting holes are the same and correspond one-to-one.

[0028] In the technical solution, the hinge structure is also connected to the first, second, and third mounting holes via a second threaded connector. Therefore, the force transmission point is also located at the third mounting hole. This design ensures that the connection points between the second reinforcing plate, the pillar reinforcing plate, and the first reinforcing plate precisely correspond to the force-bearing position of the first reinforcing plate. This not only enables effective force transmission, ensuring smooth force transfer between components and reducing the probability of structural deformation or damage caused by localized force concentration, but also significantly enhances the connection strength between the second, pillar, and first reinforcing plates. This effectively prevents structural separation caused by excessive force, thereby greatly improving the stability and reliability of the entire tailgate reinforcement structure and ensuring it maintains good performance and safety during long-term use.

[0029] In some embodiments of this application, the third mounting hole passes through the first reinforcing plate;

[0030] The first threaded connector is threaded into the third mounting hole.

[0031] In this technical solution, the third mounting hole serves both as a connection to the hinge structure and as a connection to the first threaded connector. This saves costs while ensuring direct force transmission.

[0032] In addition, the vehicle itself is provided, including: a body, the body having a tailgate reinforcement structure as described above;

[0033] A hinge structure, wherein the hinge structure is disposed in the hinge region;

[0034] The tailgate assembly is connected to the hinge structure.

[0035] In this technical solution, the optimized tailgate reinforcement structure effectively solves problems such as excessive tailgate sagging and insufficient structural strength in traditional structures, improving vehicle performance and reliability. Simultaneously, the use of lightweight die-cast aluminum and the optimized structural design reduces vehicle weight, contributing to lower energy consumption and improved fuel economy, which is significant for enhancing overall vehicle performance and market competitiveness.

[0036] In some embodiments of this application, a second threaded connector is further included, which passes through the hinge structure and is connected to the first mounting hole and the second mounting hole.

[0037] In this technical solution, the hinge structure is installed on the vehicle body via a second threaded connector. Furthermore, the force can be transmitted to the vehicle body through multiple paths.

[0038] As can be seen from the above technical solutions, additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of the back door reinforcement structure according to the embodiments of this application;

[0040] Figure 2 This is a side view of the rear door reinforcement structure according to an embodiment of this application;

[0041] Figure 3 yes Figure 2 A cross-sectional view along the AA direction;

[0042] Figure 4 This is a cross-sectional structural diagram of the back door reinforcement structure according to an embodiment of this application;

[0043] Figure 5 This is a structural schematic diagram from another perspective after cross-section of the back door reinforcement structure according to an embodiment of this application;

[0044] Figure 6 This is a partially enlarged cross-sectional view of the rear door reinforcement structure according to an embodiment of this application.

[0045] In the above figures: 100, taillight mounting plate; 101, first mounting hole; 200, hinge mounting plate; 201, second mounting hole; 300, first reinforcing plate; 301, third mounting hole; 400, pillar reinforcing plate; 500, second reinforcing plate; 600, pillar inner plate. Detailed Implementation

[0046] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] 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. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] 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.

[0051] It should be noted that in the automotive field, a vehicle includes a body, and the rear of the body is directly connected to the tailgate assembly via a hinge structure. The weight of the tailgate assembly is transferred to the body directly through the hinge structure via a single path. Typically, a hinge mounting plate is provided, which is directly connected to the body, and the weight of the tailgate assembly is transferred to the body through the hinge mounting plate.

[0052] In existing technologies, the material thickness of traditional structures is relatively large, which leads to an increase in vehicle weight and is not conducive to lightweight vehicle design. Secondly, the force transmission structure of traditional structures is not reasonable enough, relying solely on the taillight mounting plate assembly itself to bear the downward force of the tailgate, which makes the structure's load-bearing capacity weak and prone to excessive tailgate sagging.

[0053] Based on this, this application proposes a tailgate reinforcement structure and vehicle. By setting the first reinforcement plate, the gravity of the tailgate assembly is divided into two parts. One part is directly transferred to the vehicle body through the hinge mounting plate, and the other part is transferred to the vehicle pillar reinforcement plate and then to the vehicle body through the first reinforcement plate. This solves the problem of tailgate assembly sagging due to weak load-bearing capacity in the prior art.

[0054] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0055] Referring to all the accompanying drawings, in one illustrative embodiment of the tailgate reinforcement structure and vehicle of this application, the tailgate reinforcement structure includes a taillight mounting plate 100, which is disposed at the rear of the vehicle. Its main function is to provide a stable mounting position for the taillights, ensuring that the taillights can be securely fixed to the vehicle body. Furthermore, in vehicles with a side-opening tailgate, the tailgate assembly is typically hinged to the taillight mounting plate 100.

[0056] In some embodiments, the taillight mounting plate 100 has a hinge area; the hinge area has a plurality of first mounting holes 101. The rear of the vehicle typically requires a hinged tailgate assembly; therefore, the tailgate reinforcement structure also includes a first threaded connector, and the tailgate assembly is connected to the hinge area via a hinge. The first threaded connector passes through the hinge and is threaded into the first mounting holes 101, thereby enabling the hinge to be mounted on the taillight mounting plate 100. The hinge structure for hinged tailgate assembly can be connected to the hinge area on the taillight mounting section 100 via the first mounting holes 101.

[0057] In some embodiments, the tailgate reinforcement structure includes a hinge mounting plate 200 disposed on the taillight mounting plate 100; the hinge mounting plate 200 has a second mounting hole 201 corresponding to the first mounting hole 101. A hinge structure can pass through the first mounting hole 101 and connect to the second mounting hole 201 on the hinge mounting plate 200, thereby transmitting the applied force to the hinge mounting plate 200. The hinge mounting plate 200 is directly attached to the taillight mounting plate 100 and is made of sheet metal. Because it is attached to the taillight mounting plate 100, its stress is transmitted to the taillight mounting plate 100, avoiding stress concentration. This ensures high structural strength of the hinge mounting plate 200 and prevents all the stress from accumulating on the taillight mounting plate 100, reducing the probability of damage to the taillight mounting plate 100.

[0058] In some embodiments, the tailgate reinforcement structure includes a first reinforcing plate 300 and a pillar reinforcing plate 400. The first reinforcing plate 300 and the pillar reinforcing plate 400 are new structures designed to increase the structural strength and rigidity at the connection between the vehicle body and the tailgate, and to distribute the applied forces to the vehicle body. Specifically, the first reinforcing plate 300 transmits the applied forces to the mounting plate 200 and the pillar reinforcing plate 400, which in turn transmits them to the vehicle pillars on the vehicle body.

[0059] Furthermore, the first reinforcing plate 300 is disposed on the side of the hinge mounting plate 200 away from the taillight mounting plate 100. The pillar reinforcing plate 400 is disposed on the side of the first reinforcing plate 300 away from the hinge mounting plate 200; the first reinforcing plate 300 is connected to both the hinge mounting plate 200 and the pillar reinforcing plate 400.

[0060] With the above scheme, the hinge area is used to install the hinge structure, and the weight of the tailgate assembly is transferred to the hinge structure. Through the structure of this application, the weight of the tailgate assembly is transferred to the hinge mounting plate 200 via the hinge area; part of the force is transferred to the vehicle body via the hinge mounting plate 200, and another part is transferred to the pillar reinforcement plate 400 via the first reinforcing plate 300, and then to the vehicle body via the pillar reinforcement plate 400. This achieves two force transmission paths to distribute the weight of the tailgate assembly (see reference). Figure 6 This reduces the probability of the tailgate assembly sagging.

[0061] In some embodiments, the hinge is mounted on the taillight mounting plate 100 by means of a first threaded connector passing through the hinge and being threaded to the first mounting hole 101 and the second mounting hole 201.

[0062] In some embodiments, the taillight mounting plate 100 and the hinge mounting plate 200 may be connected by welding.

[0063] In some embodiments, the pillar reinforcement plate 400 is welded to the hinge mounting plate 200, and a space for mounting the first reinforcement plate 300 is formed between the pillar reinforcement plate 400 and the hinge mounting plate 200.

[0064] In some embodiments, the taillight mounting plate 100 and the hinge mounting plate 200 are fitted together, the first reinforcing plate 300 is fitted to the hinge mounting plate 200, and the pillar reinforcing plate 400 is fitted to the first reinforcing plate 300. The tightly fitted structural design reduces the gaps between the components, reduces the dispersion and loss of force caused by looseness or excessive gaps, and ensures force transmission.

[0065] In some embodiments, the first reinforcing plate 300 is made of die-cast aluminum. Compared to traditional steel, die-cast aluminum has advantages such as light weight, high strength, and good corrosion resistance. While ensuring structural strength, it can significantly reduce the weight of the back door reinforcement structure.

[0066] In some embodiments, the first reinforcing plate 300 is connected to the hinge mounting plate 200 by a first fastener. This improves the connection strength between the first reinforcing plate 300 and the hinge mounting plate 200, facilitating the transmission of forces acting on the hinge mounting plate 200.

[0067] In some embodiments, the first fastener is preferably a bolt, which passes through the first reinforcing plate 300 and is threaded to the hinge mounting plate 200. Alternatively, the bolt passes through the hinge mounting plate 200 and is threaded to the first reinforcing plate 300.

[0068] In addition, the first fastener can also be a connection such as a screw or rivet.

[0069] In some embodiments, the thickness direction of the first reinforcing plate 300 is the same as the thickness direction of the hinge mounting plate 200, that is, it is arranged along the front-rear direction of the vehicle. Since the thickness direction of the first reinforcing plate 300 is consistent with that of the hinge mounting plate 200, it can ensure smoother force transmission and reduce force dispersion or loss caused by inconsistent directions.

[0070] In some embodiments, the first reinforcing plate 300 has a third mounting hole 301 corresponding to the second mounting hole 201. When installing the hinge and the tailgate, the first threaded connector passes through the hinge and is sequentially threaded to the first mounting hole 101, the second mounting hole 201 and the third mounting hole 301, thereby enabling the hinge to be installed on the taillight mounting plate 100. A portion of the weight of the tailgate assembly can be directly transmitted to the first reinforcing plate 300 through the first threaded connector, thereby achieving force dissipation.

[0071] In some embodiments, the number of second mounting holes 201 is at least three. Furthermore, the second mounting holes 201 are not located on the same straight line, so that the area formed between the second mounting holes 201 is triangular. Because the triangular structure formed by the second mounting holes 201 has high geometric stability, it ensures the uniform distribution of force among the mounting holes, reducing the probability of structural deformation or damage caused by localized force concentration. This improves the stability of the rear door assembly after connection.

[0072] Furthermore, the second mounting holes 201 are preferably four in number and located at the four corners of a rectangle. Because the connection between the hinge structure and the taillight mounting plate 100 is a rectangular plate, this ensures that the connection points are evenly distributed across the four corners of the rectangular plate, reducing the probability of structural deformation or damage caused by concentrated local forces. Simultaneously, this design also helps improve the connection strength and stability of the entire tailgate reinforcement structure, ensuring the tailgate assembly remains stable under various operating conditions and effectively preventing tailgate sagging or wobbling caused by uneven force distribution.

[0073] In some embodiments, the first fastener is located outside the area formed by the second mounting hole 201, that is, outside the area formed by the third mounting hole 301. It is worth noting that when the hinge structure is connected to the first mounting hole 101, the second mounting hole 201, and the third mounting hole 301 via the second threaded connector, the first reinforcing plate 300, the hinge mounting plate 200, and the taillight mounting plate 100 are also connected together by the second threaded connector. This design first ensures that the installation of the first fastener does not affect the fit between the first reinforcing plate 300 and the pillar reinforcing plate 400. Secondly, the area of ​​the region formed by the connection point between the first reinforcing plate 300 and the hinge mounting plate 200 is 'a', and the area of ​​the region formed by the connection point between the hinge assembly and the hinge mounting plate 200 is 'b', where a > b. Force is transferred from a small contact area to a large contact area, resulting in more uniform and stable force transmission, reducing stress concentration, and thus lowering the probability of structural deformation or damage due to localized stress concentration.

[0074] In some embodiments, the system further includes a second reinforcing plate 500 and a pillar inner panel 600, which increase the structural strength and rigidity of the connection between the vehicle body and the tailgate, and distribute the applied force to the vehicle body. More specifically, the second reinforcing plate 500 transmits a portion of the force from the pillar reinforcing plate 400 to the vehicle body, and another portion of the force to the pillar inner panel 600. The pillar interior 600 then transmits the applied force to the vehicle body.

[0075] Furthermore, the second reinforcing plate 500 is located on the side of the pillar reinforcing plate 400 away from the first reinforcing plate 300. The pillar inner plate 600 is located on the side of the second reinforcing plate 500 away from the pillar reinforcing plate 400; the second reinforcing plate 500 is connected to both the pillar reinforcing plate 400 and the pillar inner plate 600.

[0076] The weight of the door assembly transmitted to the pillar reinforcement plate 400 is distributed and transferred. Part of it is transferred to the body through the pillar reinforcement plate 400; another part is transferred to the inner panel of the main body through the second reinforcement plate 500, and then from the inner panel of the main body to the body. Through this multi-layered connection and reinforcement, the downward force of the tailgate can be better distributed to multiple components such as the inner panel of the pillar 600, the pillar reinforcement plate 400, and the first reinforcement plate 300, forming a more stable load-bearing system. This effectively reduces the possibility of structural deformation or damage caused by excessive local stress, and further improves the load-bearing capacity and overall performance of the tailgate reinforcement structure.

[0077] Furthermore, the outer panel of the pillar is welded to the pillar reinforcing plate 400, forming a space between the outer panel and the pillar reinforcing plate 400 for mounting a second reinforcing plate 500. The side of the second reinforcing plate 500 furthest from the inner panel 600 of the pillar is attached to the pillar reinforcing plate 400, and the side of the second reinforcing plate 500 furthest from the pillar reinforcing plate 400 is attached to the inner panel 600 of the pillar. This tightly fitted structural design reduces gaps between components, minimizing force dispersion and loss due to looseness or excessive gaps, and ensuring force transmission.

[0078] In some embodiments, the second reinforcing plate 500 is abutted and connected to the pillar reinforcing plate 400 at its center; the edge of the second reinforcing plate 500 extends toward the pillar inner panel 600 and connects to it. This structural design makes the connection between the second reinforcing plate 500, the pillar reinforcing plate 400, and the pillar inner panel 600 tighter and stronger, forming a more integrated reinforcing structure. It can more effectively transfer force from the pillar reinforcing plate 400 to the pillar inner panel 600, further optimizing the force transmission path, enhancing the deformation resistance and load-bearing capacity of the entire pillar structure, and improving the stability and reliability of the tailgate reinforcing structure during use.

[0079] In some embodiments, the first threaded connector passes through the second reinforcing plate 500 and the pillar reinforcing plate 400, and is then threadedly connected to the first reinforcing plate 300. Compared with other connection methods, this threaded connection method has advantages such as high connection strength, good reliability, and ease of installation and disassembly. It can tightly connect the second reinforcing plate 500, the pillar reinforcing plate 400, and the first reinforcing plate 300 together to form a more stable through structure, further enhancing the load-bearing capacity and stability of the entire tailgate reinforcing structure, while also improving production efficiency and maintenance convenience.

[0080] In some embodiments, the number of first threaded connectors and the number of third mounting holes 301 are the same and correspond one-to-one. Because the hinge structure is also connected to the first mounting hole 101, the second mounting hole 201, and the third mounting hole 301 via second threaded connectors, the force transmission point is also located at the third mounting hole 301. Through this design, the connection points between the second reinforcing plate 500, the pillar reinforcing plate 400, and the first reinforcing plate 300 can precisely correspond to the force-bearing position of the first reinforcing plate 300. This not only enables effective force transmission, ensuring smooth force transfer between components and reducing the possibility of structural deformation or damage caused by localized force concentration, but also significantly enhances the connection strength between the second reinforcing plate 500, the pillar reinforcing plate 400, and the first reinforcing plate 300, effectively preventing structural separation caused by excessive force. This greatly improves the stability and reliability of the entire rear door reinforcement structure, ensuring it maintains good performance and safety during long-term use.

[0081] In some embodiments, the third mounting hole 301 penetrates the first reinforcing plate 300; the first threaded connector is threaded into the third mounting hole 301. The third mounting hole 301 serves both as a connection to the hinge structure and as a connection to the first threaded connector. This saves costs while ensuring direct force transmission.

[0082] Specifically, the first threaded connector is connected to a section within the third mounting hole 301, located at the end of the third mounting hole 301 furthest from the taillight mounting plate 100. This ensures that both the second and first threaded connectors are simultaneously threaded into the third mounting hole 301, reducing the possibility that the first threaded connector cannot be installed after the second threaded connector is connected to the third mounting hole 301. It also reduces the possibility that the second threaded connector cannot be installed after the first threaded connector is connected to the third mounting hole 301.

[0083] In some embodiments, since existing threaded connectors are all screwed in clockwise, if there is only one threaded segment in the third mounting hole 301, then one threaded connector will inevitably be unable to be installed. Therefore, the two ends inside the third mounting hole 301 are respectively a first internal thread segment and a second internal thread segment. The first internal thread segment is used for threaded connection with the first threaded connector, and the second internal thread segment is used for threaded connection with the second threaded connector.

[0084] In some embodiments, a reinforcing rib is provided on the side of the first reinforcing plate 300 facing the vehicle pillar reinforcing plate 400. The design of the reinforcing rib can significantly improve the structural strength and load-bearing capacity of the first reinforcing plate 300. It can be understood that after the reinforcing rib is provided on the side of the first reinforcing plate 300 facing the vehicle pillar reinforcing plate 400, the reinforcing rib is used to fit against the side wall of the vehicle pillar reinforcing plate 400.

[0085] In some embodiments, reinforcing ribs may also be provided on the side of the first reinforcing plate 300 facing the hinge mounting plate 200. It is understood that after the reinforcing ribs are provided on the side of the first reinforcing plate 300 facing the hinge mounting plate 200, the reinforcing ribs are used to adhere to the side wall of the hinge mounting plate 200.

[0086] Furthermore, there are multiple reinforcing ribs arranged in a grid pattern. This grid-shaped distribution of reinforcing ribs can significantly enhance the structural strength and load-bearing capacity of the first reinforcing plate 300. In addition, the grid-shaped distribution of reinforcing ribs can effectively disperse and evenly transfer forces, reducing the probability of structural deformation or damage caused by localized force concentration.

[0087] In some embodiments, multiple hinge areas may be provided along the height direction, and for this purpose, multiple first reinforcing plates 300 and second reinforcing plates 500 are also provided.

[0088] In some embodiments, a clearance opening is provided on the inner panel 600 of the vehicle pillar. The clearance opening is located at each of the third mounting holes 301, which facilitates manual screwing of the first threaded connector through the clearance opening during installation.

[0089] Understandably, the first threaded connector can be a bolt or screw.

[0090] In addition, the company also provides a vehicle body with a tailgate reinforcement structure as described above.

[0091] In some embodiments, the vehicle further includes a hinge structure and a tailgate assembly, with the hinge structure disposed in the hinged area; the tailgate assembly is connected to the hinge structure. This optimized tailgate reinforcement structure effectively solves problems such as excessive tailgate sagging and insufficient structural strength in traditional structures, improving the vehicle's performance and reliability. Simultaneously, due to the use of lightweight die-cast aluminum and optimized structural design, the vehicle's weight is reduced, contributing to lower energy consumption and improved fuel economy, which is significant for enhancing the vehicle's overall performance and market competitiveness.

[0092] In some embodiments, a second threaded connector is further included, which passes through the hinge structure and connects to the first mounting hole 101 and the second mounting hole 201. The second threaded connector enables the hinge structure to be installed on the vehicle body. Furthermore, forces can be transmitted to the vehicle body via multiple paths.

[0093] Understandably, the second threaded connector can be a bolt or screw.

[0094] In this application, during the assembly process, when the first reinforcing plate 300 and the hinge mounting plate 200 are connected via the first fastener, the tightening torque of the bolts is rigorously calculated and tested to ensure connection strength while reducing the possibility of component deformation due to over-tightening. Assembly personnel use professional torque wrenches, operating according to the prescribed tightening sequence and torque requirements to ensure that each connection point meets design requirements. Simultaneously, the mating surfaces of each component are rigorously inspected during assembly to ensure tight fit and reduce uneven stress or noise caused by gaps. In some embodiments, the assembly of the tailgate reinforcement structure is highly integrated and optimized with the overall vehicle assembly process. During the body manufacturing stage, components such as the taillight mounting plate 100 and the hinge mounting plate 200 are pre-installed on the vehicle body to form a stable reference surface. Subsequently, components such as the first reinforcing plate 300 and the pillar reinforcement plate 400 are precisely positioned and installed with the assistance of specialized tooling fixtures. The design of the tooling fixtures fully considers the shape and size of each component, effectively ensuring assembly accuracy. The entire assembly process combines automation and manual labor, which improves production efficiency while ensuring assembly quality.

[0095] The proposed solution has undergone numerous experiments to ensure the reliability and feasibility of the structure. Specifically, a series of rigorous tests are conducted after vehicle assembly, including but not limited to tailgate opening and closing durability tests, vibration tests, and load tests. In the opening and closing durability test, the tailgate is repeatedly opened and closed tens of thousands of times to simulate the actual operating conditions of the vehicle, verifying the stability of the hinges and the wear of components. The vibration test simulates the vibration environment of a vehicle traveling on different road conditions to check for any loosening or abnormal noises in the tailgate reinforcement structure. The load test applies a force exceeding the design load to the tailgate assembly to verify the hinge's load-bearing capacity and safety under extreme conditions. Through these rigorous tests, the tailgate reinforcement structure of this application is ensured to maintain good performance under various complex operating conditions, providing reliable protection for vehicle use.

[0096] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A back door reinforcing structure characterized by comprising: It includes: A taillight mounting plate (100) has a hinge area; the hinge area is provided with a plurality of first mounting holes (101); A hinge mounting plate (200) is disposed on the taillight mounting plate (100); the mounting plate is provided with a second mounting hole (201) corresponding to the first mounting hole (101); A first reinforcing plate (300) is disposed on the side of the hinge mounting plate (200) away from the taillight mounting plate (100); A pillar reinforcement plate (400) is disposed on the side of the first reinforcement plate (300) away from the hinge mounting plate (200); The first reinforcing plate (300) is connected to both the hinge mounting plate (200) and the pillar reinforcing plate (400).

2. The back door reinforcing structure according to claim 1, characterized by The first reinforcing plate (300) is made of die-cast aluminum.

3. The back door reinforcing structure according to claim 1, characterized by Also includes: The second reinforcing plate (500) is located on the side of the pillar reinforcing plate (400) away from the first reinforcing plate (300); The inner panel of the pillar (600) is located on the side of the second reinforcing plate (500) away from the pillar reinforcing plate (400); The second reinforcing plate (500) is connected to both the pillar reinforcing plate (400) and the pillar inner plate (600).

4. The back door reinforcing structure according to claim 3, characterized by The first reinforcing plate (300) is connected to the hinge mounting plate (200) by a first fastener; The first reinforcing plate (300) has a third mounting hole (301) corresponding to the second mounting hole (201).

5. The back door reinforcing structure according to claim 4, characterized by The second reinforcing plate (500) is attached to and connected to the vehicle pillar reinforcing plate (400) at its center; the edge of the second reinforcing plate (500) extends toward the inner panel (600) of the vehicle pillar and is connected to the inner panel (600) of the vehicle pillar.

6. The back door reinforcing structure according to claim 4, characterized by It also includes a first threaded connector, which passes through the second reinforcing plate (500) and the pillar reinforcing plate (400) and is threaded to the first reinforcing plate (300).

7. The back door reinforcement structure according to claim 6, characterized by The number of the first threaded connectors is the same as the number of the third mounting holes (301) and they correspond one-to-one.

8. The back door reinforcing structure according to claim 7, characterized by The third mounting hole (301) penetrates the first reinforcing plate (300); The first threaded connector is threaded into the third mounting hole (301).

9. A vehicle characterized by comprising: include: The vehicle body has a tailgate reinforcement structure as described in any one of claims 1 to 8; A hinge structure, wherein the hinge structure is disposed in the hinge area; The tailgate assembly is connected to the hinge structure.

10. The vehicle of claim 9, wherein, It also includes a second threaded connector, which passes through the hinge structure and is connected to the first mounting hole (101) and the second mounting hole (201).

Images