Vehicle tail door connecting structure and vehicle

Abstract

The utility model provides a vehicle tail door connecting structure and a vehicle. The vehicle tail door connecting structure comprises a hinge support, a rotating shaft, a vehicle body outer plate, a tail door outer plate, a first reinforcing plate and a second reinforcing plate. The hinge support is fixedly connected with the vehicle body outer plate, and the rotating shaft is fixedly connected with the tail door outer plate and rotationally connected with the hinge support; a first reinforcing plate is fixed to the position, corresponding to the hinge support, of the automobile body outer plate, a second reinforcing plate is fixed to the position, corresponding to the rotating shaft, of the tail door outer plate, and the first reinforcing plate and the second reinforcing plate are both hot-press forming plates. The tail door side and the vehicle body side are each provided with one reinforcing plate, the manufacturing cost can be saved, the manufacturing efficiency can be improved, the reinforcing plates are hot-press formed plates and have high strength and hardness, and the structural strength of a hinge installation area can be remarkably enhanced. Compared with a traditional reinforcing plate, the hot-press forming plate is light in weight, so that the strength is improved, and meanwhile, part of weight can be reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile parts, and particularly relates to a vehicle tail door connecting structure and a vehicle. BACKGROUND

[0002] With the rapid development of the automobile market, the requirements for the modeling freedom, low wind resistance coefficient and use scene of the automobile are higher and higher, and the through tail lamp and long size spoiler increase the weight of the tail door system compared with before, so that the load and service life requirements of the tail door hinge area during use are also higher.

[0003] The tail door hinge reinforcing plate is divided into a vehicle body side and a tail door side, and usually the hinge reinforcing plate on any one side is composed of two cold stamping parts, the hinge reinforcing plate is connected into a hinge reinforcing plate assembly through spot welding or riveting, and then the hinge reinforcing plate assembly is connected with the vehicle body roof or the tail door inner plate through spot welding, and in order to meet the metal plate and welding point life of the hinge installation area, the thickness of the hinge reinforcing plate is usually increased.

[0004] However, increasing the thickness of the hinge reinforcing plate directly leads to weight increase, and easily leads to the thickness of the sealing strip clamping surface exceeding the sealing strip clamping tolerance range, thereby causing sealing strip clamping to be not firm, water leakage and sealing strip distortion, and meanwhile, the space arrangement at the vehicle tail door also brings new challenges. For a large size tail door, simply increasing the thickness of the hinge reinforcing plate may still be unable to meet the metal plate and welding point life of the hinge installation area. CONTENT OF THE UTILITY MODEL

[0005] In view of the above problems, the utility model provides a vehicle tail door connecting structure to solve the problems of weight increase of the vehicle body, sealing strip clamping to be not firm and difficulty in tail door space arrangement caused by simply increasing the thickness of the hinge reinforcing plate to meet the metal plate and welding point life requirements of the hinge installation area of the large size tail door.

[0006] In order to solve the above technical problems, the utility model is implemented in the following manner:

[0007] The embodiment of the application provides a vehicle tail door connecting structure, which comprises a hinge support, a rotating shaft, a vehicle body outer plate, a tail door outer plate, a first reinforcing plate and a second reinforcing plate, the hinge support is fixedly connected with the vehicle body outer plate, the rotating shaft is fixedly connected with the tail door outer plate, and the rotating shaft is rotationally connected with the hinge support, one piece of the first reinforcing plate is fixed at a position corresponding to the hinge support of the vehicle body outer plate, and one piece of the second reinforcing plate is fixed at a position corresponding to the rotating shaft of the tail door outer plate, wherein the first reinforcing plate and the second reinforcing plate are both hot-press forming plate parts.

[0008] Optionally, the tensile strength of the first reinforcing plate and / or the second reinforcing plate is 1300-1600 MPa, and the yield strength is 950-1250 MPa.

[0009] Optionally, the thickness of the first reinforcing plate and / or the second reinforcing plate is 0.8-1.2 mm.

[0010] Optionally, the first reinforcing plate is arranged on the side of the vehicle body outer plate away from the hinge support, and the second reinforcing plate is arranged on the side of the tail door outer plate away from the rotating shaft.

[0011] Optionally, the hinge support is fixedly connected with the vehicle body outer plate by bolts, and the rotating shaft is connected with the tail door outer plate by bolts.

[0012] Optionally, the part of the vehicle body outer plate where the hinge support is fixed has a first connecting portion, the first reinforcing plate has a first reinforcing portion corresponding to the position of the first connecting portion, and the thickness of the first reinforcing portion is greater than the thickness of other parts of the first reinforcing plate; and / or, the part of the tail door outer plate where the rotating shaft is fixed has a second connecting portion, the second reinforcing plate has a second reinforcing portion corresponding to the position of the second connecting portion, and the thickness of the second reinforcing portion is greater than the thickness of other parts of the second reinforcing plate.

[0013] Optionally, the thickness of the first reinforcing portion is d1, the thickness of other parts of the first reinforcing plate is d2, and 1.5≤d1 / d2≤2; and / or, the thickness of the second reinforcing portion is d3, the thickness of other parts of the second reinforcing plate is d4, and 1.5≤d1 / d2≤2.

[0014] Optionally, the first reinforcing portion and other parts of the first reinforcing plate are smoothly connected, and the second reinforcing portion and other parts of the second reinforcing plate are smoothly connected.

[0015] Optionally, the end of the first reinforcing plate is sealingly connected with the vehicle body outer plate, and the end of the second reinforcing plate is sealingly connected with the tail door outer plate.

[0016] The embodiments of the present application also provide a vehicle comprising the vehicle tail door connecting structure as described in any one of the above.

[0017] In the embodiment of the present application, the vehicle tail door connecting structure comprises a hinge support, a rotating shaft, a vehicle body outer plate, a tail door outer plate, a first reinforcing plate and a second reinforcing plate; the hinge support is fixedly connected with the vehicle body outer plate, the rotating shaft is fixedly connected with the tail door outer plate, and the rotating shaft is rotationally connected with the hinge support; the vehicle body outer plate is fixed with a piece of the first reinforcing plate at a position corresponding to the hinge support, and the tail door outer plate is fixed with a piece of the second reinforcing plate at a position corresponding to the rotating shaft, wherein the first reinforcing plate and the second reinforcing plate are both hot-pressed plate parts. The reinforcing plate adopts a hot-pressed plate part, which has high strength and hardness. The reinforcing plates arranged on the tail door side and the vehicle body side can significantly enhance the structural strength of the hinge mounting area. At the same time, the hot-pressed plate part has a relatively light weight compared with the traditional reinforcing plate. By using the hot-pressed plate part, the structural performance is improved, which helps to realize the lightweight design of the vehicle. One reinforcing plate is arranged on each of the tail door side and the vehicle body side, the number is relatively small and the structure is relatively simple, which can reduce the welding points of the reinforcing plate with the vehicle body or the tail door, can save manufacturing cost and improve manufacturing efficiency, is convenient for installation operation in the vehicle production process and also can reduce part of the weight. In addition, the reinforcing plate provides a more solid mounting basis for the hinge, reduces the shaking and displacement of the hinge in the use process, and makes the connection of the tail door and the vehicle body more stable and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0019] Figure 1 is a schematic view of a vehicle tail door connecting structure according to an embodiment of the present application;

[0020] Figure 2 is a schematic view of a vehicle tail door connecting structure according to an embodiment of the present application;

[0021] Figure 3 is a schematic view of a first reinforcing plate according to an embodiment of the present application;

[0022] Figure 4 is a schematic view of a second reinforcing plate according to an embodiment of the present application.

[0023] REFERENCE NUMERALS:

[0024] Hinge support-10, rotating shaft-20, vehicle body outer plate-30, first connecting part-301, tail door outer plate-40, second connecting part-401, first reinforcing plate-50, first reinforcing part-501, second reinforcing plate-60, second reinforcing part-601, bolt-70. DETAILED DESCRIPTION

[0025] With reference to the drawings and embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0026] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally a class, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally indicates that the objects before and after are in a "or" relationship.

[0027] It should be understood that the "some embodiments" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, "in some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0028] A vehicle tail door connecting structure and a vehicle provided by the present application will be described in detail below by listing specific embodiments.

[0029] Referring to Figures 1 to 2 , the vehicle tail door connecting structure comprises: a hinge support 10, a rotating shaft 20, a vehicle body outer plate 30, a tail door outer plate 40, a first reinforcing plate 50 and a second reinforcing plate 60; the hinge support 10 is fixedly connected with the vehicle body outer plate 30, the rotating shaft 20 is fixedly connected with the tail door outer plate 40, and the rotating shaft 20 is rotatably connected with the hinge support 10; the vehicle body outer plate 30 is fixed with a piece of the first reinforcing plate 50 at a position corresponding to the hinge support 10, and the tail door outer plate 40 is fixed with a piece of the second reinforcing plate 60 at a position corresponding to the rotating shaft 20, wherein the first reinforcing plate 50 and the second reinforcing plate 60 are both hot-pressed plate parts.

[0030] In the embodiments of the present application, the first reinforcing plate 50 is arranged at the corresponding position of the vehicle body outer plate 30 and the hinge support 10, and the second reinforcing plate 60 is arranged at the corresponding position of the tail door outer plate 40 and the rotating shaft 20, so as to strengthen these key connection positions. In the process of frequently opening and closing the tail door, the hinge support 10 and the rotating shaft 20 will bear a large force and torque, and the reinforcing plate can effectively disperse these forces, prevent the vehicle body outer plate 30 and the tail door outer plate 40 from deforming and cracking at the connection position, and improve the reliability of the tail door connection structure.

[0031] The first reinforcing plate 50 and the second reinforcing plate 60 are both hot-pressed plate parts, and the hot-pressing process can make the plate parts have good strength and precision. They are tightly fixed with the vehicle body outer plate 30 and the tail door outer plate 40, can uniformly transmit the weight and external force of the tail door to the vehicle body structure, enhance the stability of the entire tail door connection structure of the vehicle, and improve the ability of the vehicle to resist various external forces during driving.

[0032] The hot-pressed plate parts can accurately control the shape and size of the plate parts, so that the first reinforcing plate 50 and the second reinforcing plate 60 have better adhesion with the vehicle body outer plate 30 and the tail door outer plate 40, reduce the adjustment and trimming work in the subsequent assembly process, improve the production efficiency, and reduce the production cost. The hot-pressed plate parts can reasonably distribute and form the material according to the design requirements, maximize the reduction of material waste under the premise of ensuring the performance of the reinforcing plate, improve the utilization rate of the material, and further reduce the cost.

[0033] Optionally, the reinforcing plate can be a reinforcing plate made of high-strength carbon fiber plate or high-strength steel material, and the embodiments of the present application are not limited specifically. High strength refers to a yield strength of 500 MPa or more and a tensile strength of 800 MPa or even higher.

[0034] Optionally, the tensile strength of the first reinforcing plate 50 and / or the second reinforcing plate 60 is 1300 MPa to 1600 MPa, and the yield strength is 950 MPa to 1250 MPa.

[0035] In the embodiments of the present application, under the action of external force caused by frequent opening and closing of the tail door of the vehicle and vibration and bumping during driving, the reinforcing plate has a tensile strength of 1300 MPa to 1600 MPa and a yield strength of 950 MPa to 1250 MPa, which can effectively resist stretching and deformation, ensure that the connection position of the tail door and the vehicle body remains stable, prevent problems such as looseness and excessive deformation, and improve the reliability and stability of the tail door connection structure.

[0036] The higher strength can withstand the weight of the tail door itself and the greater impact force generated when opening and closing, and can also disperse the impact force when the vehicle encounters extreme situations such as collision, avoiding the connection part from being damaged first, thereby ensuring the integrity of the entire tail door structure.

[0037] Optionally, the thickness of the first reinforcing plate 50 and / or the second reinforcing plate 60 is 0.8mm to 1.2mm.

[0038] In the embodiments of the present application, the thickness range of 0.8mm to 1.2mm can ensure the strength of the tail door connection structure while avoiding excessive weight increase due to thick plates. Thinner plates are also easier to process during hot pressing, better fit the connection part of the tail door and the vehicle body, enhance the stability of the structure, effectively disperse external forces on the tail door, and reduce the risk of local deformation and damage.

[0039] On the basis of meeting the safety and use requirements of the vehicle, controlling the thickness of the reinforcing plate to be 0.8mm to 1.2mm helps to reduce the overall weight of the vehicle. Light weight can reduce fuel consumption and exhaust emission of the vehicle, improve the acceleration performance and handling performance of the vehicle, and also has a positive effect on improving the cruising range of new energy vehicles.

[0040] In addition, this thickness range makes the reinforcing plate easy to be welded with other components. It can make the welding process more stable, the quality of the weld more easily controlled, and ensure that the first reinforcing part 501 and the other parts of the first reinforcing plate 50, the second reinforcing part 601 and the other parts of the second reinforcing plate 60 are well welded as a whole, improve the reliability and sealing of the connection, and reduce welding defects and stress concentration phenomenon.

[0041] Optionally, the thickness of the first reinforcing plate 50 and / or the second reinforcing plate 60 is 1mm.

[0042] Optionally, referring to Figures 1 to 2 , the first reinforcing plate 50 is arranged on the side of the vehicle body outer plate 30 away from the hinge support 10, and the second reinforcing plate 60 is arranged on the side of the tail door outer plate 40 away from the rotating shaft 20.

[0043] In the embodiments of the present application, when the tailgate is opened or closed, the connection between the pivot 20 and the hinge support 10 will bear a large torsion and tension. By arranging the reinforcing plates on the side of the vehicle body outer panel 30 and the tailgate outer panel 40 away from the connection between the pivot 20 and the hinge support 10, the stress generated during the opening and closing of the tailgate can be balanced, making the stress on the entire tailgate connection structure more uniform. For example, when the tailgate is closed, the second reinforcing plate 60 can help the tailgate outer panel 40 resist deformation caused by the tension at the pivot 20, preventing excessive deformation of the tailgate outer panel 40 on the side close to the pivot 20. At the same time, the first reinforcing plate 50 can also enhance the strength of the vehicle body outer panel 30 on the side close to the hinge support 10, preventing local deformation or damage to the vehicle body outer panel 30 during long-term stress.

[0044] This arrangement can provide additional support to the weak link of the tailgate connection structure. Since the parts away from the connection point are more susceptible to external forces such as vibration and jolt during vehicle operation, the arrangement of reinforcing plates can effectively increase the rigidity and strength of these parts, reduce the relative displacement between the tailgate and the vehicle body, and make the tailgate connection structure more stable.

[0045] Optionally, the first reinforcing plate 50 is connected to the vehicle body outer panel 30 on the side away from the hinge support 10 by welding, and the second reinforcing plate 60 is connected to the tailgate outer panel 40 on the side away from the pivot 20 by welding.

[0046] In the embodiments of the present application, the first reinforcing plate 50 is welded to the vehicle body outer panel 30, and the second reinforcing plate 60 is welded to the tailgate outer panel 40. This connection method can withstand various forces generated during the opening and closing of the tailgate, as well as vibrations and impacts during vehicle operation, ensuring that the reinforcing plates can effectively play the role of reinforcing the structure and reducing the risk of the reinforcing plates falling off or loosening due to insecure connections.

[0047] Welding can accurately fix the reinforcing plates in the designed position, ensuring the accuracy of the relative position between the reinforcing plates and the outer panels. For the first reinforcing plate 50 and the second reinforcing plate 60, accurate positioning is crucial for optimizing the stress distribution of the tailgate connection structure. They can provide precise reinforcement at the key parts of the hinge support 10 and the pivot 20, effectively strengthening the weak link of the tailgate and vehicle body connection, and improving the stability and reliability of the entire structure.

[0048] Through welding, the first reinforcing plate 50 and the vehicle body outer panel 30, and the second reinforcing plate 60 and the tailgate outer panel 40 form a kind of integral structure to some extent. This integrated structure can work better together to withstand external forces. When the tailgate is subjected to external forces, the reinforcing plates and the outer panels can work as a whole to disperse and transfer stress, improving the anti-deformation and load-bearing capacity of the structure, making the tailgate connection structure more robust and durable.

[0049] In addition, since the number of the first reinforcing plate 50 and the second reinforcing plate 60 in the embodiment of the present application is one, compared with the traditional design, the number of reinforcing plates is reduced, which directly reduces the procurement cost of raw materials. At the same time, the number of welding times is also reduced. With the reduction of the number of reinforcing plates, the number of welding points or welding seams is also reduced, the welding working time is shortened, the probability of welding defects is reduced, the workload of subsequent inspection and repair of welding defects is also reduced, and the labor cost is also reduced.

[0050] Optionally, referring to Figures 1 to 2 , the hinge support 10 is fixedly connected with the vehicle body outer plate 30 through the bolt 70, and the rotating shaft 20 is connected with the tail door outer plate 40 through the bolt 70.

[0051] In the embodiment of the present application, the bolt 70 can generate a large pre-tightening force after being tightened, so that the hinge support 10 and the vehicle body outer plate 30 and the rotating shaft 20 and the tail door outer plate 40 are tightly fitted. During normal use of the vehicle, various forces generated when the tail door is opened and closed can be borne, including gravity, tension, torsion and the like, so that the connection part cannot be easily loosened or detached, thereby ensuring the connection stability and reliability between the tail door and the vehicle body and ensuring the safe use of the vehicle.

[0052] During installation, if it is found that the positions of the hinge support 10 or the rotating shaft 20 are deviated, the bolt 70 can be loosened for fine adjustment until the ideal installation position is reached, and then the bolt 70 is tightened. This adjustability can compensate for the size errors that may occur during manufacturing and assembly, thereby improving the flexibility of assembly and the qualification rate of products.

[0053] The connection of the hinge support 10 and the vehicle body outer plate 30 and the rotating shaft 20 and the tail door outer plate 40 through the bolt 70 is simple to operate and can improve the assembly efficiency. When the vehicle is repaired or the related parts are replaced in the later period, the bolt 70 can be easily unscrewed, and the hinge support 10 and the rotating shaft 20 can be detached from the vehicle body outer plate 30 and the tail door outer plate 40, so that the damaged parts can be repaired or replaced, thereby reducing the repair cost and difficulty.

[0054] Optionally, referring to Figure 2 , the part of the vehicle body outer plate 30 where the hinge support 10 is fixed is a first connection part 301, the first reinforcing plate 50 has a first reinforcing part 501, the first reinforcing part 501 corresponds to the position of the first connection part 301, and the thickness of the first reinforcing part 501 is greater than the thickness of other parts of the first reinforcing plate; and / or, the part of the tail door outer plate 40 where the rotating shaft 20 is fixed is a second connection part 401, the second reinforcing plate 60 has a second reinforcing part 601, the second reinforcing part 601 corresponds to the position of the second connection part 401, and the thickness of the second reinforcing part 601 is greater than the thickness of other parts of the second reinforcing plate.

[0055] In the embodiments of the present application, the first connecting part 301 of the outer panel 30 is the fixed position of the hinge support 10, and the second connecting part 401 of the tail door outer panel 40 is the fixed position of the hinge shaft 20. These positions will bear a large force during the use of the vehicle, such as the gravity of the tail door, the torsion when opening and closing the door, etc. By setting the first reinforcing part 501 and the second reinforcing part 601 with a larger thickness, the strength of these key positions can be targetedly enhanced, so that they can better bear various external forces, reduce the risk of deformation and damage, and prolong the service life of the vehicle body and the tail door.

[0056] The first reinforcing part 501 corresponds to the position of the first connecting part 301, and the second reinforcing part 601 corresponds to the position of the second connecting part 401, and the thickness is increased, which helps to improve the connection stability between the hinge support 10 and the outer panel 30 of the vehicle body, and between the hinge shaft 20 and the tail door outer panel 40. During the driving of the vehicle, even if affected by external forces such as bumps and vibrations, the connecting positions will not easily loosen, so as to ensure that the tail door can be normally opened and closed, and can be closely attached to the vehicle body when closed, thereby ensuring the sealing and safety of the vehicle.

[0057] The thicker reinforcing part can make the force more evenly distributed at the connecting position, avoiding stress concentration. When the tail door is subjected to external force, the first reinforcing part 501 and the second reinforcing part 601 can disperse the force to a larger area, reducing the case that the local area is subjected to excessive force, thereby improving the reliability and safety of the entire structure. This is also of great significance to improve the fatigue resistance of the vehicle body, and can reduce the possibility of structural fatigue failure caused by long-term stress.

[0058] Optionally, the first reinforcing part 501 is welded as a whole with other parts of the first reinforcing plate, and the second reinforcing part 601 is welded as a whole with other parts of the second reinforcing plate, which can be achieved by TRM (Tele Remote Manipulator, laser remote welding) or TWB (Tailored Welded Blank, laser filler welding). The embodiments of the present application are not limited specifically.

[0059] Whether TRM (Tele Remote Manipulator, laser remote welding) or TWB (Tailored Welded Blank, laser filler welding) or other welding processes are used, the first reinforcing part 501 and the other parts of the first reinforcing plate, and the second reinforcing part 601 and the other parts of the second reinforcing plate can be well welded as a whole, improving the reliability and sealing of the connection, and reducing the welding defects and stress concentration phenomenon.

[0060] Optionally, referring to Figures 3 to 4, the thickness of the first reinforcing part 501 is d1, the thickness of the other part of the first reinforcing plate is d2, 1.5≤d1 / d2≤2; and / or, the thickness of the second reinforcing part 601 is d3, the thickness of the other part of the second reinforcing plate is d4, 1.5≤d1 / d2≤2.

[0061] In the embodiments of the present application, the thickness ratio between the thickness d1 of the first reinforcing part 501 and the thickness d2 of the other part of the first reinforcing plate, and the thickness ratio between the thickness d3 of the second reinforcing part 601 and the thickness d4 of the other part of the second reinforcing plate are controlled between 1.5 and 2. In this way, the strength of the connecting part can be improved accurately without significantly increasing the weight and cost. The ratio ensures that the first reinforcing part 501 and the second reinforcing part 601 have sufficient thickness to withstand large external forces, such as the gravity, torsion and tension that the hinge support 10 and the rotating shaft 20 bear during the use of the vehicle, while avoiding material waste and weight increase of the vehicle body caused by excessive thickening.

[0062] Such thickness ratio helps to optimize the stress distribution of the connecting part. When the tailgate is opened or closed or the vehicle is subjected to external forces such as vibration during driving, the first reinforcing part 501 and the second reinforcing part 601 can uniformly transmit the force to the surrounding structure with appropriate rigidity, avoiding stress concentration near the connecting point, thereby reducing the risk of structural fatigue and damage and improving the stability and reliability of the overall structure of the vehicle body and the tailgate.

[0063] This thickness ratio has good processability in the manufacturing process. On the one hand, it is convenient for mold design and manufacturing, which can ensure that the reinforcing plate is accurately formed according to the design requirements during stamping or molding, and the thickness difference between the reinforcing part and the other part meets the standard; on the other hand, it is beneficial to the implementation of the welding process, which makes the heat distribution more uniform during welding, reduces welding defects such as pores and cracks, and improves the welding quality and connection strength.

[0064] Such thickness ratio not only meets the requirements of vehicle safety and performance, but also avoids unnecessary material consumption and increases in processing costs.

[0065] Optionally, the first reinforcing part 501 and the other part of the first reinforcing plate are smoothly transitioned, and the second reinforcing part 601 and the other part of the second reinforcing plate are smoothly transitioned.

[0066] In the embodiments of the present application, the first reinforcing part 501 and the other parts of the first reinforcing plate are smoothly connected, and the second reinforcing part 601 and the other parts of the second reinforcing plate are smoothly connected, so as to avoid the weak points caused by the sudden change. When the vehicle tail door and the vehicle body are subjected to external force, such as impact force when opening and closing the door, jolt and vibration during driving, or collision, the reinforcing part and the reinforcing plate can uniformly bear and disperse the stress. This ensures that the structure will not crack or deform under complex stress conditions, maintains the integrity and stability of the vehicle structure, and improves the overall impact resistance.

[0067] The smooth transition enables the stress to be transmitted along a continuous and gradual path, reducing the local stress peak. During long-term use, the fatigue damage of the material caused by stress concentration is reduced, the service life of the reinforcing plate and the entire vehicle body and tail door structure is prolonged, and the durability of the vehicle is improved.

[0068] In the hot forming or other processing processes, the smooth transition design is easier to achieve than the sharp transition. During the manufacturing process, the material flows and forms more smoothly, reducing defects such as wrinkles and cracks caused by local deformation difficulties. Not only does this improve production efficiency and reduce waste, but it also reduces processing difficulty and cost, making mass production more feasible.

[0069] Optionally, the end of the first reinforcing plate 50 is sealingly connected with the vehicle body outer plate 30, and the end of the second reinforcing plate 60 is sealingly connected with the tail door outer plate 40.

[0070] In the embodiments of the present application, the end of the first reinforcing plate 50 is sealingly connected with the vehicle body outer plate 30, and the end of the second reinforcing plate 60 is sealingly connected with the tail door outer plate 40, which can effectively prevent rainwater and dust from entering the vehicle interior through the gap between the vehicle body and the tail door during daily use. Not only can it prevent the metal parts inside the vehicle body and the tail door from rusting and corroding, prolonging the service life of the parts, but it can also avoid damage to electronic equipment, mechanical parts, and other parts inside the vehicle, ensuring the stable operation of the vehicle systems.

[0071] The sealing connection strengthens the connection strength between the reinforcing plate and the vehicle body outer plate 30 and the tail door outer plate 40 to some extent. When the vehicle is subjected to external impact, such as collision or jolt, the sealing connection part can better bear the force, so that the overall structure of the vehicle body and the tail door is enhanced, the anti-deformation ability of the vehicle is improved, and the structural stability of the vehicle under complex working conditions is ensured, providing strong support for the safety performance of the vehicle.

[0072] The embodiments of the present application also provide a vehicle comprising the vehicle tail door connecting structure according to any one of the above.

[0073] In the embodiments of the present application, the vehicle includes the vehicle tail door connecting structure of any one of the above. Since the first reinforcing plate 50 is arranged at the corresponding position of the vehicle body outer panel 30 and the hinge support 10, and the second reinforcing plate 60 is arranged at the corresponding position of the tail door outer panel 40 and the rotating shaft 20, the key connecting parts can be strengthened. During frequent opening and closing of the tail door, the hinge support 10 and the rotating shaft 20 will bear a large force and torque. The reinforcing plates can effectively disperse the force, prevent the vehicle body outer panel 30 and the tail door outer panel 40 from deforming or cracking at the connecting parts, and improve the reliability of the tail door connecting structure. The first reinforcing plate 50 and the second reinforcing plate 60 are both hot-pressed plate parts. The hot-pressing process can make the plate parts have good strength and precision. They are tightly fixed with the vehicle body outer panel 30 and the tail door outer panel 40, can uniformly transmit the weight and external force of the tail door to the vehicle body structure, enhance the stability of the entire tail door connecting structure, and improve the ability of the vehicle to resist various external forces during driving.

[0074] The use of the above vehicle tail door connecting structure in the vehicle can make the connection between the tail door and the vehicle body more stable, effectively bear the weight of the tail door and various vibrations and impact forces generated during driving of the vehicle, reduce the occurrence of looseness and abnormal noise, and improve the overall reliability and durability of the vehicle. The use of the stable tail door connecting structure helps to maintain the position and structural integrity of the tail door when the vehicle is in a collision or other unexpected situation, reduces the risk of deformation or falling of the tail door, and thus provides better protection for passengers and cargo in the vehicle. In addition, reliable connection can also ensure the normal operation of the tail door lock system and prevent the tail door from being accidentally opened during driving. At the same time, under the premise of ensuring the connection strength, the weight of the tail door connecting structure can be reduced, which helps to achieve the lightweight goal of the vehicle, thereby improving the fuel economy or cruising range of the vehicle, and also improving the handling performance of the vehicle.

[0075] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0076] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A vehicle tailgate connection structure, characterized in that, The vehicle tailgate connection structure includes: hinge support (10), pivot (20), vehicle body outer panel (30), tailgate outer panel (40), first reinforcing plate (50), and second reinforcing plate (60); The hinge support (10) is fixedly connected to the outer body panel (30), the rotating shaft (20) is fixedly connected to the outer tailgate panel (40), and the rotating shaft (20) is rotatably connected to the hinge support (10). A first reinforcing plate (50) is fixed at the position corresponding to the hinge support (10) on the outer body panel (30), and a second reinforcing plate (60) is fixed at the position corresponding to the pivot (20) on the outer tailgate panel (40). Both the first reinforcing plate (50) and the second reinforcing plate (60) are hot-pressed sheet parts.

2. The vehicle tailgate connection structure according to claim 1, characterized in that, The first reinforcing plate (50) and / or the second reinforcing plate (60) have a tensile strength of 1300 MPa to 1600 MPa and a yield strength of 950 MPa to 1250 MPa.

3. The vehicle tailgate connection structure according to claim 1, characterized in that, The thickness of the first reinforcing plate (50) and / or the second reinforcing plate (60) is 0.8 mm to 1.2 mm.

4. The vehicle tailgate connection structure according to claim 1, characterized in that, The first reinforcing plate (50) is disposed on the side of the outer panel (30) away from the hinge support (10), and the second reinforcing plate (60) is disposed on the side of the outer panel (40) away from the pivot (20).

5. The vehicle tailgate connecting structure according to any one of claims 1-4, characterized in that, The hinge support (10) is fixedly connected to the outer body panel (30) by bolts (70), and the pivot (20) is connected to the outer tailgate panel (40) by bolts (70).

6. The vehicle tailgate connection structure according to claim 5, characterized in that, The portion of the outer body panel (30) where the hinge support (10) is fixed is the first connecting portion (301). The first reinforcing plate (50) has a first reinforcing portion (501), the position of the first reinforcing portion (501) corresponds to that of the first connecting portion (301), and the thickness of the first reinforcing portion (501) is greater than the thickness of other portions of the first reinforcing plate (50); and / or, The part of the tailgate outer panel (40) where the pivot (20) is fixed is the second connecting part (401). The second reinforcing plate (60) has a second reinforcing part (601). The second reinforcing part (601) corresponds to the position of the second connecting part (401). The thickness of the second reinforcing part (601) is greater than the thickness of other parts of the second reinforcing plate (60).

7. The vehicle tailgate connection structure according to claim 6, characterized in that, The thickness of the first reinforcing part (501) is d1, and the thickness of other parts of the first reinforcing plate (50) is d2, where 1.5 ≤ d1 / d2 ≤ 2; and / or, The thickness of the second reinforcing part (601) is d3, and the thickness of other parts of the second reinforcing plate (60) is d4, 1.5≤d1 / d2≤2.

8. The vehicle tailgate connection structure according to claim 6, characterized in that, The first reinforcing part (501) and other parts of the first reinforcing plate (50) are smoothly transitioned, and the second reinforcing part (601) and other parts of the second reinforcing plate (60) are smoothly transitioned.

9. The vehicle tailgate connecting structure according to any one of claims 1-4, characterized in that, The end of the first reinforcing plate (50) is sealed to the outer body panel (30), and the end of the second reinforcing plate (60) is sealed to the outer tailgate panel (40).

10. A vehicle, characterized in that, Includes the vehicle tailgate connection structure as described in any one of claims 1-9.

Images