Vehicle body rear structure and vehicle

Abstract

The embodiment of the invention relates to the technical field of vehicle part manufacturing, and discloses a vehicle body rear structure and a vehicle. The vehicle body rear structure comprises a rear floor assembly, a tail apron board, a trailer hook assembly and a stiffening beam assembly, the rear floor assembly comprises at least two longitudinal beams extending in the first direction, and the two longitudinal beams are located on the two sides of the rear floor assembly in the second direction respectively; the tail apron board is connected with the rear floor assembly and located at the end, in the first direction, of the rear floor assembly. In the first direction, the tow hook assembly is located on the side, away from the rear floor assembly, of the tail apron board. The stiffening beam assembly is located on one side of the rear floor assembly in the third direction, and the two ends of the stiffening beam assembly are connected with the two longitudinal beams respectively in the second direction. According to the embodiment of the invention, the overall strength of the structure is improved, the rear floor assembly can bear larger tension, the probability that the rear floor assembly is bent and deformed when the tow hook assembly is used is reduced, and normal use of a vehicle is guaranteed.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of vehicle part manufacturing, and particularly relate to a rear body structure and a vehicle. BACKGROUND

[0002] The rear body structure is an important part of the vehicle body, can bear other parts, and bear the function of collision protection, and directly affects the safety and comfort of the vehicle. The traditional rear body structure usually includes rear floor assembly, tail apron and rear bumper beam and other parts. With the improvement of people's living standards, the demand for vehicle towing function is also getting higher and higher, and to realize the above function, the rear bumper beam in the rear body structure needs to be replaced with a trailer hook assembly.

[0003] However, by using the above scheme, the trailer hook assembly will bear strong tension when in use, and will conduct the tension to the rear floor assembly; when the tension is large, the rear floor assembly is prone to bending deformation, thereby affecting the normal use of the vehicle. SUMMARY

[0004] In view of this, the embodiments of the present application provide a rear body structure and a vehicle, which are beneficial to improve the overall strength of the rear body structure, reduce the probability of bending deformation of the rear floor assembly, and ensure the normal use of the vehicle.

[0005] In order to achieve the above purpose, the technical scheme of the embodiments of the present application is as follows:

[0006] The embodiments of the present application provide a rear body structure, comprising:

[0007] The rear floor assembly comprises at least two longitudinal beams extending along a first direction, and the two longitudinal beams are respectively located on both sides of the rear floor assembly along a second direction;

[0008] The tail apron is connected with the rear floor assembly and is located at one end of the rear floor assembly along the first direction;

[0009] The trailer hook assembly is located on the side of the tail apron away from the rear floor assembly along the first direction;

[0010] The reinforcing beam assembly is located on one side of the rear floor assembly along a third direction, and both ends of the reinforcing beam assembly are connected with the two longitudinal beams along the second direction;

[0011] The first direction, the second direction and the third direction are perpendicular to each other, the first direction is the length direction of the vehicle, the second direction is the width direction of the vehicle, and the third direction is the height direction of the vehicle.

[0012] The embodiment of the present application sets the reinforcing beam assembly below the rear floor assembly, connects the reinforcing beam assembly with the two longitudinal beams, forms a frame arrangement structure of "two longitudinal beams and one horizontal beam" (two longitudinal beams refer to the two longitudinal beams, and one horizontal beam refers to the reinforcing beam assembly), thereby improving the overall strength of the structure, enabling the rear floor assembly to bear greater tension, reducing the probability of the rear floor assembly being bent and deformed when the trailer hook assembly is used, and ensuring normal use of the vehicle.

[0013] In a possible implementation manner of the present application, the reinforcing beam assembly is detachably connected with the longitudinal beams.

[0014] The embodiment of the present application detachably connects the reinforcing beam assembly with the longitudinal beams, thereby selectively installing or detaching the reinforcing beam assembly based on the specific needs of the vehicle model (i.e., installing the reinforcing beam assembly when the vehicle model is adapted to the trailer hook assembly, and detaching the reinforcing beam assembly and installing the rear bumper beam when the vehicle model has no trailer hook assembly), so that the rear structure of the vehicle body can be adapted to more vehicle models.

[0015] In a possible implementation manner of the present application, the reinforcing beam assembly comprises a reinforcing beam and two connecting supports, the reinforcing beam extends along the second direction, the two connecting supports are respectively arranged at the two ends of the reinforcing beam along the second direction, along the third direction, the connecting supports are located on the side of the reinforcing beam facing the rear floor assembly, and the two connecting supports are detachably connected with the two longitudinal beams, respectively.

[0016] The embodiment of the present application detachably connects the connecting supports at the two ends of the reinforcing beam with the two longitudinal beams, thereby realizing the connection and fixation of the reinforcing beam assembly and the rear floor assembly, improving the tensile strength of the rear floor assembly by using the reinforcing beam assembly, reducing the probability of the rear floor assembly being bent and deformed when the trailer hook assembly is used, and ensuring normal use of the vehicle. Meanwhile, the connecting supports can adjust the position of the reinforcing beam in the height direction of the vehicle, so as to better utilize the reinforcing beam to absorb the impact force when the vehicle collides, and ensure the driving safety of the vehicle.

[0017] In a possible implementation manner of the present application, the connecting support comprises a support top wall, a first support side wall, a second support side wall, a third support side wall and a connecting section, the first support side wall, the second support side wall and the third support side wall are all connected with the support top wall, the support top wall is arranged in the third direction and spaced apart from the reinforcing beam, and the support top wall is detachably connected with the longitudinal beam; the first support side wall and the second support side wall are respectively connected with the two sides of the reinforcing beam along the first direction; along the second direction, the third support side wall is located on the side of the support top wall facing the other connecting support; the third support side wall is arranged obliquely, along the third direction, the connecting section is located at the end of the third support side wall away from the support top wall, and the connecting section is connected with the top of the reinforcing beam.

[0018] The support top wall, the first support side wall and the second support side wall of the embodiment of the application jointly form a groove structure with an opening on one side, and the reinforcing beam is arranged inside, and the reinforcing beam is connected with the first support side wall, the second support side wall and the connecting section, so that the stability of the connection between the support and the reinforcing beam is ensured. The support top wall, the first support side wall, the second support side wall, the third support side wall and the connecting section can be formed by one-time stamping, which is beneficial to ensuring the overall strength of the parts and improving the production efficiency.

[0019] In a possible implementation manner of the application, one end of the longitudinal beam is provided with a longitudinal beam end plate, and the longitudinal beam is detachably connected with the tail skirt plate and the trailer hook assembly through the longitudinal beam end plate.

[0020] The longitudinal beam end plate comprises at least one flange, the longitudinal beam is formed with a cavity, and the flange is located in the cavity and is detachable with the longitudinal beam.

[0021] The longitudinal beam end plate of the embodiment of the application is connected with the longitudinal beam by extending into the longitudinal beam through the flange, so as to be beneficial to ensuring the stability of the connection between the longitudinal beam end plate and the longitudinal beam. The detachable connection mode is convenient for the installation and subsequent maintenance and disassembly of the longitudinal beam end plate.

[0022] In a possible implementation manner of the application, the longitudinal beam comprises a top wall, a first side wall, a bottom wall and a second side wall, the top wall and the bottom wall are oppositely arranged along the third direction, the first side wall and the second side wall are oppositely arranged along the second direction, and the top wall, the first side wall, the bottom wall and the second side wall are sequentially connected in a head-to-tail manner, and along the second direction, the first side wall is located on the side of the longitudinal beam away from another longitudinal beam; an adapter reinforcing plate is arranged between the top wall and the longitudinal beam end plate, between the first side wall and the longitudinal beam end plate and between the bottom wall and the longitudinal beam end plate.

[0023] In the embodiment of the application, the adapter reinforcing plate is arranged between the top wall and the longitudinal beam end plate, between the first side wall and the longitudinal beam end plate and between the bottom wall and the longitudinal beam end plate, so that the connection strength between the longitudinal beam and the longitudinal beam end plate can be improved, which is beneficial to further improving the connection strength between the longitudinal beam end plate and the tail skirt plate and the trailer hook assembly, enabling the rear structure of the vehicle body to bear greater tension, further reducing the probability of bending deformation of the trailer hook assembly during use, and ensuring the normal use of the vehicle.

[0024] In a possible implementation manner of the application, the adapter reinforcing plate comprises a first reinforcing plate and a second reinforcing plate, one end of the first reinforcing plate is connected with one end of the second reinforcing plate perpendicularly, the first reinforcing plate is detachably connected with the longitudinal beam end plate, and the second reinforcing plate is detachably connected with the longitudinal beam.

[0025] The first reinforcing plate and the longitudinal beam end plate are detachably connected, and the second reinforcing plate and the longitudinal beam are detachably connected, so that the connection strength of the longitudinal beam and the longitudinal beam end plate is improved, and the mounting and dismounting of the adapter reinforcing plate, the longitudinal beam end plate and the longitudinal beam are facilitated.

[0026] In a possible implementation manner of the present application, at least one of the first reinforcing plates is further provided with a positioning member, which is connected to the trailer hook assembly after passing through the tail apron.

[0027] The positioning member can be used for pre-positioning when the trailer hook assembly is mounted, so that the assembly efficiency is improved.

[0028] In a possible implementation manner of the present application, the longitudinal beam is made of aluminum alloy material, and the reinforcing beam assembly, the longitudinal beam end plate and the adapter reinforcing plate are made of steel material.

[0029] The aluminum alloy longitudinal beam can be used to reduce the overall weight of the vehicle, and the steel reinforcing beam assembly, the longitudinal beam end plate and the adapter reinforcing plate are connected with the aluminum alloy longitudinal beam, so that the overall strength of the rear structure of the vehicle body is ensured, the probability of the rear floor assembly being bent and deformed when the trailer hook assembly is used is reduced, and the normal use of the vehicle is ensured.

[0030] The present application also provides a vehicle comprising the rear structure of the vehicle body as described above.

[0031] The vehicle of the present application has high overall strength of the rear structure of the vehicle body, the rear floor assembly can bear greater tension, the probability of the rear floor assembly being bent and deformed when the trailer hook assembly is used is reduced, and the normal use of the vehicle is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 A structure diagram of the rear structure of the vehicle body provided by the present application is shown in the figure;

[0033] Figure 2 An exploded view of the rear structure of the vehicle body provided by the present application is shown in the figure; Figure 1

[0034] Figure 3 A structure diagram of the rear floor assembly provided by the present application is shown in the figure;

[0035] Figure 4 A structure diagram of the reinforcing beam assembly provided by the present application is shown in the figure;

[0036] Figure 5 A partial enlarged view of part A in the figure; Figure 4

[0037] Figure 6 ​​A structure diagram of the connecting support provided by the embodiment of the present application in a first perspective view;

[0038] Figure 7 A structure diagram of the connecting support provided by the embodiment of the present application in a second perspective view;

[0039] Figure 8 A structure diagram of the longitudinal beam and the longitudinal beam end plate provided by the embodiment of the present application in a first perspective view;

[0040] Figure 9 A structure diagram of the longitudinal beam and the longitudinal beam end plate provided by the embodiment of the present application in a second perspective view;

[0041] Figure 10 A structure diagram of the longitudinal beam end plate provided by the embodiment of the present application;

[0042] Figure 11 A structure diagram of the longitudinal beam, the longitudinal beam end plate and the adapter reinforcing plate provided by the embodiment of the present application in a first perspective view;

[0043] Figure 12 A structure diagram of the longitudinal beam, the longitudinal beam end plate and the adapter reinforcing plate provided by the embodiment of the present application in a second perspective view;

[0044] Figure 13 A structure diagram of the adapter reinforcing plate provided by the embodiment of the present application;

[0045] Figure 14 An assembly relationship diagram of the longitudinal beam, the longitudinal beam end plate and the adapter reinforcing plate provided by the embodiment of the present application;

[0046] Figure 15 An assembly diagram of the reinforcing beam assembly and other parts provided by the embodiment of the present application;

[0047] Figure 16 An assembly sectional view of the reinforcing beam assembly and other parts provided by the embodiment of the present application.

[0048] Reference signs:

[0049] 100 - rear floor assembly; 110 - longitudinal beam; 111 - top wall; 112 - first side wall; 113 - bottom wall; 114 - second side wall; 120 - longitudinal beam end plate; 1201 - first through hole; 1202 - first positioning member through hole; 121 - flange; 122 - lightening hole; 130 - adapter reinforcing plate; 131 - first reinforcing plate; 1311 - fourth through hole; 132 - second reinforcing plate; 1321 - sixth through hole; 140 - positioning member; 150 - floor assembly; 151 - floor surface; 152 - support cross beam;

[0050] 200 - tail apron; 210 - second through hole; 220 - second positioning member through hole;

[0051] 300 - trailer hook assembly; 310 - trailer hook; 320 - trailer hook crossbeam; 330 - connecting plate; 331 - third through hole; 332 - third positioning member through hole;

[0052] 400 - reinforcing beam assembly; 410 - reinforcing beam; 411 - process through hole; 420 - connecting support; 421 - support top wall; 4211 - seventh through hole; 422 - first support side wall; 4221 - fifth through hole; 423 - second support side wall; 424 - third support side wall; 425 - connecting section; 426 - weld seam;

[0053] 510 - first fastener; 520 - second fastener; 530 - first projection nut; 540 - second projection nut; 550 - third projection nut; 560 - weld point;

[0054] X - first direction; Y - second direction; Z - third direction. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the specific technical scheme of the present application will be further described in detail below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0056] In the embodiments of the present application, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0057] In addition, in the embodiments of the present application, the orientation terms such as "upper", "lower", "left" and "right" are defined with respect to the orientation of the components shown in the drawings, and it should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the orientation of the components placed in the drawings.

[0058] In the embodiments of the present application, unless otherwise specified and limited, the term "connection" should be understood broadly, for example, "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through intermediate medium.

[0059] In the embodiments of the present application, the terms "comprising", "containing" or any other any conjugations are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements not only includes those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0060] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean serving as an example or illustration. Any embodiment or design presented as "exemplary" or "for example" in the embodiments of the present application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of "exemplary" or "for example" is intended to present concepts in a concrete manner.

[0061] As described in the background, in order to meet the needs of people's daily travel, etc., the rear bumper beam in the rear body structure can be replaced by a trailer hook assembly. However, the trailer hook assembly will bear a strong pulling force when in use, and will transmit the pulling force to the rear floor assembly. When the pulling force is large, the longitudinal beams on both sides of the rear floor assembly are easily bent and deformed in the vehicle width direction, thereby affecting the normal use of the vehicle.

[0062] Therefore, the embodiments of the present application aim to provide a rear body structure and a vehicle, by arranging a reinforcing beam assembly below the rear floor assembly, and connecting the reinforcing beam assembly and the two longitudinal beams to form an overall frame arrangement, thereby improving the overall strength of the structure, enabling the rear floor assembly to bear a larger pulling force, reducing the probability of the rear floor assembly being bent and deformed when the trailer hook assembly is in use, and ensuring the normal use of the vehicle.

[0063] In the following, embodiments of the present application will be described in detail with reference to the accompanying drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be interpreted as limiting the present application. It should be noted that the first direction X, the second direction Y and the third direction Z in the embodiments of the present application are three different directions in a three-dimensional space, and the first direction X, the second direction Y and the third direction Z may, for example, be perpendicular to each other, wherein the first direction X may, for example, be the length direction of the vehicle, the second direction Y may, for example, be the width direction of the vehicle, and the third direction Z may, for example, be the height direction of the vehicle.

[0064] The embodiment of the present application provides a rear body structure, which is used for improving the strength of a vehicle to meet the requirement of installing a trailer hook assembly. It should be noted that the vehicle in the present application can refer to a large car, a small car, a special car and the like. For example, according to the vehicle type, the car in the present application can be a sedan type, a cross-country type, a multi-purpose vehicle (MPV) type or other types. For the vehicle, a wheel and a body are generally provided, the rear body structure is located at the rear end in the length direction of the vehicle, is an important part of the body, can carry other parts, bears the function of collision protection and the like, and directly affects the safety and comfort of the vehicle.

[0065] Please refer to Figures 1-16 The embodiment of the present application provides a rear body structure, which comprises:

[0066] The rear floor assembly 100 comprises at least two longitudinal beams 110 extending along the first direction X, and the two longitudinal beams 110 are located on the two sides of the rear floor assembly 100 along the second direction Y.

[0067] The embodiment of the present application takes the rear floor assembly 100 provided with two longitudinal beams 110 as an example for description, and specifically, as shown in Figure 3 The rear floor assembly 100 further comprises a floor assembly 150, the floor assembly 150 is located between the two longitudinal beams 110, and plays a role of supporting other parts. The floor assembly 150 comprises a floor surface 151 and two support cross beams 152 located below the floor surface, the shapes of the two support cross beams 152 are matched with the surface shape of the floor surface, and the two support cross beams 152 can be connected and fixed with the floor surface 151 through welding, so as to improve the strength of the floor surface 151.

[0068] In other possible embodiments, the rear floor assembly 100 can be further provided with more than two longitudinal beams 110 to further improve the strength of the body. For example, four longitudinal beams 110 can be arranged on the rear floor assembly 100, two longitudinal beams 110 are arranged on the two sides of the rear floor assembly 100 along the second direction Y, and the two longitudinal beams 110 located on the same side can be arranged adjacent along the second direction Y or the third direction Z.

[0069] In the embodiment of the present application, the longitudinal beam 110 can be made of an aluminum alloy, so as to reduce the weight of the longitudinal beam 110 and be beneficial to the lightweight of the vehicle. The floor assembly 150 can be made of steel to reduce the cost. The two ends of the floor assembly 150 along the second direction Y can be connected with the two longitudinal beams 110 on the two sides through rivets, bolts and the like.

[0070] The tail apron 200 is connected to the rear floor assembly 100 and is located at one end of the rear floor assembly 100 along the first direction X. Exemplarily, the tail apron 200 of the embodiment of the present application can be formed by stamping a steel plate, and the tail apron 200 can be detachably connected to one end of the rear floor assembly 100 along the first direction X by fasteners, thereby facilitating installation and subsequent maintenance and replacement.

[0071] The trailer hook assembly 300 is located on the side of the tail apron 200 away from the rear floor assembly 100 along the first direction X.

[0072] Specifically, as shown in Figure 2 The trailer hook assembly 300 of the embodiment of the present application includes a trailer hook 310, a trailer hook crossbeam 320, and a connecting plate 330. The trailer hook 310 is located at the middle of the trailer hook crossbeam 320 along the second direction Y so as to facilitate towing of objects. The trailer hook crossbeam 320 is provided with the connecting plate 330 on both sides along the second direction Y, and the trailer hook assembly 300 can be connected to the tail apron 200 and the rear floor assembly 100 through the connecting plate 330.

[0073] The reinforcement beam assembly 400 is located on one side of the rear floor assembly 100 along the third direction Z, and in the embodiment of the present application, the reinforcement beam assembly 400 is located below the rear floor assembly 100. Along the second direction Y, the two ends of the reinforcement beam assembly 400 are connected to the two longitudinal beams 110, respectively, so that the two longitudinal beams 110 can be connected integrally by the reinforcement beam assembly 400, thereby improving the overall strength of the rear structure of the vehicle body. In the embodiment of the present application, the reinforcement beam assembly 400 can be made of steel, for example, so as to have high strength.

[0074] As can be known from the above description, the embodiment of the present application sets the reinforcement beam assembly 400 below the rear floor assembly 100, connects the reinforcement beam assembly 400 and the two longitudinal beams 110, and forms a frame arrangement structure of “two longitudinal beams and one crossbeam” (wherein the two longitudinal beams refer to the two longitudinal beams 110, and the crossbeam refers to the reinforcement beam assembly 400), thereby facilitating improvement of the overall strength of the structure, enabling the rear floor assembly 100 to withstand greater tension, reducing the probability of the rear floor assembly 100 being bent and deformed due to use of the trailer hook assembly 300, and ensuring normal use of the vehicle.

[0075] In the embodiment of the present application, the reinforcement beam assembly 400 is detachably connected to the longitudinal beam 110. For example, the reinforcement beam assembly 400 can be detachably connected to the longitudinal beam 110 by fasteners such as bolts and screws.

[0076] The embodiment of the present application connects the reinforcing beam assembly 400 with the longitudinal beam 110 detachably, so that the reinforcing beam assembly 400 can be selectively installed or detached based on the specific needs of the vehicle model (i.e. the reinforcing beam assembly 400 can be installed when the vehicle model is adapted to the trailer hook assembly 300, and the reinforcing beam assembly 400 can be detached and installed in the rear bumper beam when the vehicle model does not have the trailer hook assembly 300), so that the rear structure of the vehicle body can be adapted to more vehicle models.

[0077] Please continue to refer to Figure 4 The reinforcing beam assembly 400 of the embodiment of the present application includes a reinforcing beam 410 and two connecting supports 420. The reinforcing beam 410 extends along the second direction Y, and the cross section (perpendicular to the second direction Y) of the reinforcing beam 410 is generally rectangular; the two connecting supports 420 are respectively arranged at the two ends of the reinforcing beam 410 along the second direction Y. Along the third direction Z, the connecting supports 420 are located on the side of the reinforcing beam 410 facing the rear floor assembly 100, and the two connecting supports 420 are respectively detachably connected with the two longitudinal beams 110. That is, the embodiment of the present application realizes the detachable connection between the reinforcing beam assembly 400 and the longitudinal beam 110 through the detachable connection of the two connecting supports 420 with the two longitudinal beams 110.

[0078] The embodiment of the present application realizes the connection and fixation of the reinforcing beam assembly 400 and the rear floor assembly 100 through the detachable connection of the connecting supports 420 at both ends of the reinforcing beam 410 with the two longitudinal beams 110, so as to improve the tensile strength of the rear floor assembly 100 by using the reinforcing beam assembly 400, reduce the probability of deformation of the rear floor assembly 100 caused by the use of the trailer hook assembly 300, and ensure the normal use of the vehicle. At the same time, the connecting supports 420 can adjust the position of the reinforcing beam 410 in the vehicle height direction, so as to better utilize the reinforcing beam 410 to absorb the impact force during vehicle collision and ensure the driving safety of the vehicle.

[0079] Please continue to refer to Figure 5The connecting support 420 of the embodiment of the present application comprises a support top wall 421, a first support side wall 422, a second support side wall 423, a third support side wall 424 and a connecting section 425. The first support side wall 422, the second support side wall 423 and the third support side wall 424 are connected with the support top wall 421. Among them, the first support side wall 422 and the second support side wall 423 are respectively located on both sides of the support top wall 421 along the first direction X, and the third support side wall 424 is located on one side of the support top wall 421 along the second direction Y. The support top wall 421 is spaced apart from the reinforcing beam 410 along the third direction Z, and the support top wall 421 is detachably connected with the longitudinal beam 110. The first support side wall 422 and the second support side wall 423 are respectively connected with both sides of the reinforcing beam 410 along the first direction X. Along the second direction Y, the third support side wall 424 is located on one side of the support top wall 421 facing the other connecting support 420. The third support side wall 424 is obliquely arranged, and along the third direction Z, the connecting section 425 is located at one end of the third support side wall 424 away from the support top wall 421, and the connecting section 425 is connected with the top of the reinforcing beam 410.

[0080] Exemplarily, the first support side wall 422, the second support side wall 423 and the connecting section 425 of the embodiment of the present application can be connected with the reinforcing beam 410 by welding, and the weld 426 can be formed on the surface of the first support side wall 422, the second support side wall 423 and the connecting section 425 in contact with the reinforcing beam 410.

[0081] The support top wall 421, the first support side wall 422 and the second support side wall 423 of the embodiment of the present application jointly form a groove structure with an opening on one side, and the reinforcing beam 410 is arranged inside, and the reinforcing beam 410 is connected with the first support side wall 422, the second support side wall 423 and the connecting section 425, thereby ensuring the stability of the connection between the connecting support 420 and the reinforcing beam 410. The support top wall 421, the first support side wall 422, the second support side wall 423, the third support side wall 424 and the connecting section 425 can be formed by one-time stamping, which is beneficial to ensure the overall strength of the parts and improve the production efficiency. The third support side wall 424 is obliquely arranged, which is beneficial to the product demolding and processing.

[0082] Please continue to refer to Figures 8-10 Along the first direction X, one end of the longitudinal beam 110 of the embodiment of the present application is provided with a longitudinal beam end plate 120, and the longitudinal beam 110 is detachably connected with the tail skirt plate 200 and the trailer hook assembly 300 through the longitudinal beam end plate 120. In the embodiment of the present application, the longitudinal beam end plate 120 can be made of a steel plate, thereby improving the connection strength of the longitudinal beam 110 with the tail skirt plate 200 and the trailer hook assembly 300.

[0083] The longitudinal beam end plate 120 comprises at least one flange 121, and the longitudinal beam 110 is formed with a cavity, and the flange 121 is located in the cavity and detachably connected with the longitudinal beam 110. For example, the longitudinal beam end plate 120 is provided with a lightening hole 122, and the lightening hole 122 corresponds to the cavity of the longitudinal beam 110. The longitudinal beam end plate 120 can be provided with two flanges 121, and the two flanges 121 are oppositely arranged along the third direction Z and connected with the top wall 111 and the bottom wall 113 of the longitudinal beam 110 respectively.

[0084] The longitudinal beam end plate 120 of the embodiment of the application is connected with the longitudinal beam 110 by the flange 121 extending into the longitudinal beam 110, so as to facilitate the stability of the connection between the longitudinal beam end plate 120 and the longitudinal beam 110. The detachable connection facilitates the installation and subsequent maintenance and disassembly of the longitudinal beam end plate 120.

[0085] Please refer to Figures 8-14 The longitudinal beam 110 comprises a top wall 111, a first side wall 112, a bottom wall 113 and a second side wall 114, the top wall 111 and the bottom wall 113 are oppositely arranged along the third direction Z, the first side wall 112 and the second side wall 114 are oppositely arranged along the second direction Y, and the top wall 111, the first side wall 112, the bottom wall 113 and the second side wall 114 are sequentially connected end to end. The longitudinal beam 110 is formed with a cavity, and a reinforcing rib can be arranged in the cavity to improve the strength of the longitudinal beam 110 itself. Along the second direction Y, the first side wall 112 is located on the side of the longitudinal beam 110 away from another longitudinal beam 110. The top wall 111, the first side wall 112 and the bottom wall 113 are provided with an adapter reinforcing plate 130 between the longitudinal beam end plate 120, and the adapter reinforcing plate 130 can be a steel plate to further improve the connection strength of the longitudinal beam 110 and other parts.

[0086] The embodiment of the application can improve the connection strength between the longitudinal beam 110 and the longitudinal beam end plate 120 by arranging the adapter reinforcing plate 130 between the top wall 111, the first side wall 112 and the bottom wall 113 of the longitudinal beam 110 and the longitudinal beam end plate 120, which is conducive to further improving the connection strength of the longitudinal beam end plate 120, the tail skirt plate 200 and the trailer hook assembly 300, so that the rear structure of the vehicle body can withstand greater tension, further reducing the probability of bending and deforming of the trailer hook assembly 300 during use, and ensuring the normal use of the vehicle.

[0087] As Figure 13 shown, the adapter reinforcing plate 130 comprises a first reinforcing plate 131 and a second reinforcing plate 132, one end of the first reinforcing plate 131 is perpendicularly connected with one end of the second reinforcing plate 132. The first reinforcing plate 131 is detachably connected with the longitudinal beam end plate 120, and the second reinforcing plate 132 is detachably connected with the longitudinal beam 110.

[0088] The first reinforcing plate 131 is detachably connected with the longitudinal beam end plate 120, and the second reinforcing plate 132 is detachably connected with the longitudinal beam 110, so that the connection strength of the longitudinal beam 110 and the longitudinal beam end plate 120 is improved, and the mounting and dismounting of the adapter reinforcing plate 130 with the longitudinal beam end plate 120 and the longitudinal beam 110 are facilitated.

[0089] In the embodiment, the at least one first reinforcing plate 131 is further provided with a positioning member 140, which is connected with the trailer hook assembly 300 after passing through the tail apron plate 200. For example, the positioning member 140 can be a screw, which is welded and fixed on the first reinforcing plate 131. The longitudinal beam end plate 120 can be provided with a first positioning member through hole 1202, the tail apron plate 200 can be provided with a second positioning member through hole 220, and the connecting plate 330 can be provided with a third positioning member through hole 332. When the trailer hook assembly 300 is installed, the positioning member 140 can be inserted into the trailer hook assembly 300 after passing through the first positioning member through hole 1202, the second positioning member through hole 220 and the third positioning member through hole 332 in sequence, so that the pre-positioning during installation is realized.

[0090] The positioning member 140 is arranged to realize the pre-positioning during installation of the trailer hook assembly 300, which is beneficial to improve the assembly efficiency.

[0091] The longitudinal beam 110 in the embodiment is made of aluminum alloy, and the reinforcing beam assembly 400, the longitudinal beam end plate 120 and the adapter reinforcing plate 130 are made of steel.

[0092] The aluminum alloy longitudinal beam 110 is adopted in the embodiment, which is beneficial to reduce the overall weight of the vehicle. The reinforcing beam assembly 400, the longitudinal beam end plate 120 and the adapter reinforcing plate 130 made of steel are connected with the aluminum alloy longitudinal beam 110, so that the overall strength of the rear structure of the vehicle body is ensured, the probability of the rear floor assembly 100 being bent and deformed due to use of the trailer hook assembly 300 is reduced, and the normal use of the vehicle is ensured.

[0093] In the embodiment, in order to reduce the number of fasteners, a plurality of first fasteners 510 are arranged to fixedly connect the longitudinal beam end plate 120, the connecting support 420, the adapter reinforcing plate 130, the tail apron plate 200 and the connecting plate 330 along the first direction X. Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 、 Figure 10 、 Figure 13 、 Figure 15As shown, the longitudinal beam end plate 120 is provided with a plurality of first through holes 1201, the tail apron plate 200 is provided with a plurality of second through holes 210, the connecting plate 330 is provided with a plurality of third through holes 331, and the first reinforcing plate 131 is provided with a plurality of fourth through holes 1311. In order to ensure the stability of the connection, a third projection nut 550 can also be arranged on the first reinforcing plate 131. Along the first direction X, the first fastener 510 is connected with the third projection nut 550 after sequentially passing through the third through hole 331, the second through hole 210, the first through hole 1201 and the fourth through hole 1311, thereby fixing and connecting the connecting plate 330, the tail apron plate 200, the longitudinal beam end plate 120 and the first reinforcing plate 131.

[0094] In addition, the adapter reinforcing plate 130 connected with the bottom wall 113 is also connected with the connecting support 420. Specifically, the first support side wall 422 of the connecting support 420 is also provided with a plurality of fifth through holes 4221, and the fifth through hole 4221 can be pre-buried with a first projection nut 530 toward one side of the connecting support 420. Along the first direction X, the first fastener 510 is connected with the first projection nut 530 after sequentially passing through the third through hole 331, the second through hole 210, the first through hole 1201, the fourth through hole 1311 and the fifth through hole 4221, thereby fixing and connecting the connecting plate 330, the tail apron plate 200, the longitudinal beam end plate 120, the first reinforcing plate 131 and the first support side wall 422. As shown, Figure 14 As shown, before being connected and fixed by the first fastener 510, the first reinforcing plate 131 can be connected with the longitudinal beam end plate 120 by spot welding, and the welding point 560 can be arranged close to the fourth through hole 1311 to prevent the adapter reinforcing plate 130 connected with the bottom wall 113 from falling off.

[0095] The above-mentioned first fastener 510 can be a bolt. That is, in the first direction X, the plurality of parts can be connected by only the first fastener 510 according to the embodiment of the application, thereby facilitating the reduction of the number of fasteners used and improving the assembly efficiency. The first fastener 510 can also meet the connection requirements between parts of different materials.

[0096] Similarly, in order to reduce the number of fasteners used, the connecting support 420, the adapter reinforcing plate 130, the longitudinal beam 110 and the longitudinal beam end plate 120 can be fixed and connected by a plurality of second fasteners 520 along the third direction Z. As shown, Figures 6-16As shown, the second reinforcing plate 132 is provided with a plurality of sixth through holes 1321, the top wall 111 and the bottom wall 113 of the longitudinal beam 110 are each provided with a plurality of corresponding first through holes (not shown in the figure), the flange 121 of the longitudinal beam end plate 120 is provided with a plurality of corresponding second through holes (not shown in the figure), and one side of the second through hole is provided with a second projection welding nut 540. In the third direction Z, the second fastener 520 is sequentially connected with the second projection welding nut 540 after passing through the sixth through hole 1321, the first through hole and the second through hole, thereby fixing and connecting the second reinforcing plate 132, the top wall 111 and the flange 121.

[0097] The support top wall 421 of the connecting support 420 is also provided with a seventh through hole 4211. When the bottom wall 113 of the longitudinal beam 110 is connected, in the third direction Z, the second fastener 520 is sequentially connected with the second projection welding nut 540 after passing through the seventh through hole 4211, the sixth through hole 1321, the first through hole and the second through hole, thereby fixing and connecting the support top wall 421, the second reinforcing plate 132, the top wall 111 and the flange 121. As Figure 15 and Figure 16 As shown, in order to facilitate the installation of the second fastener 520, a process through hole 411 can be pre-formed on the reinforcing beam 410 to facilitate the locking of the second fastener 520.

[0098] The adapter reinforcing plate 130 connected with the first side wall 112 can also be locked and fixed by the second fastener 520. In this embodiment, in the second direction Y, the second fastener 520 can sequentially pass through the sixth through hole 1321 and the first side wall 112, thereby connecting and fixing the second reinforcing plate 132 and the first side wall 112.

[0099] The above-mentioned second fastener 520 can be a bolt. That is, in the second direction Y and the third direction Z, the second fastener 520 can be used to connect a plurality of parts, thereby facilitating the reduction of the number of fasteners used and improving the assembly efficiency. The second fastener 520 can also meet the connection requirements between parts of different materials.

[0100] The embodiments of the present application also provide a vehicle comprising the above-mentioned rear body structure.

[0101] The vehicle of the embodiments of the present application has a higher overall strength of the rear body structure, and the rear floor assembly can withstand greater tension, thereby reducing the probability of the rear floor assembly being bent and deformed when the trailer hook assembly is used, and ensuring the normal use of the vehicle.

[0102] The above sequence numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments. The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A vehicle body rear structure, characterized in that: include: A rear floor assembly (100), the rear floor assembly (100) comprising at least two longitudinal beams (110) extending along a first direction, the two longitudinal beams (110) being respectively located on two sides of the rear floor assembly (100) along a second direction; a tail skirt plate (200), the tail skirt plate (200) being connected to the rear floor assembly (100) and being located at one end of the rear floor assembly (100) along the first direction; A trailer hook assembly (300), along the first direction, the trailer hook assembly (300) is located on a side of the tail skirt (200) facing away from the rear floor assembly (100); a reinforcing beam assembly (400), the reinforcing beam assembly (400) being located on one side of the rear floor assembly (100) along the third direction, and two ends of the reinforcing beam assembly (400) being connected to the two longitudinal beams (110) respectively along the second direction; The first direction, the second direction and the third direction are perpendicular to each other, the first direction is the length direction of the vehicle, the second direction is the width direction of the vehicle, and the third direction is the height direction of the vehicle.

2. The vehicle body rear structure according to claim 1, characterized in that: The reinforcing beam assembly (400) is detachably connected to the longitudinal beam (110).

3. The vehicle body rear structure according to claim 2, characterized in that: The reinforcing beam assembly (400) comprises a reinforcing beam (410) and two connecting supports (420), wherein the reinforcing beam (410) extends along the second direction, and the two connecting supports (420) are respectively arranged at two ends of the reinforcing beam (410) along the second direction. Along the third direction, the connecting supports (420) are located on a side of the reinforcing beam (410) facing the rear floor assembly (100), and the two connecting supports (420) are respectively detachably connected to the two longitudinal beams (110).

4. The vehicle body rear structure according to claim 3, characterized in that: The connecting support (420) comprises a support top wall (421), a first support side wall (422), a second support side wall (423), a third support side wall (424) and a connecting section (425); the first support side wall (422), the second support side wall (423) and the third support side wall (424) are all connected to the support top wall (421); the support top wall (421) and the reinforcing beam (410) are spaced apart along the third direction, and the support top wall (421) and the longitudinal beam (110) are detachably connected; the first support side wall ( 422) and the second support side wall (423) are respectively connected to the two sides of the reinforcing beam (410) along the first direction; along the second direction, the third support side wall (424) is located on the side of the support top wall (421) facing the other connecting support (420); the third support side wall (424) is inclined, and along the third direction, the connecting section (425) is located at one end of the third support side wall (424) away from the support top wall (421), and the connecting section (425) is connected to the top of the reinforcing beam (410).

5. The vehicle body rear structure according to claim 1, wherein: Along the first direction, one end of the longitudinal beam (110) is provided with a longitudinal beam end plate (120), and the longitudinal beam (110) is detachably connected to the tail skirt plate (200) and the trailer hook assembly (300) through the longitudinal beam end plate (120); The longitudinal beam end plate (120) includes at least one flange (121), a cavity is formed in the longitudinal beam (110), and the flange (121) is located in the cavity and is detachable from the longitudinal beam (110).

6. The vehicle body rear structure according to claim 5, characterized in that: The longitudinal beam (110) includes a top wall (111), a first side wall (112), a bottom wall (113) and a second side wall (114); the top wall (111) and the bottom wall (113) are arranged relative to each other along the third direction; the first side wall (112) and the second side wall (114) are arranged relative to each other along the second direction; the top wall (111), the first side wall (112), the bottom wall (113) and the second side wall (114) are connected end to end in sequence; along the second direction, the first side wall (112) is located on the side of the longitudinal beam (110) facing away from the other longitudinal beam (110); and a transition reinforcement plate (130) is provided between the top wall (111) and the longitudinal beam end plate (120), between the first side wall (112) and the longitudinal beam end plate (120), and between the bottom wall (113) and the longitudinal beam end plate (120).

7. The vehicle body rear structure according to claim 6, characterized in that: The transition reinforcement plate (130) comprises a first reinforcement plate (131) and a second reinforcement plate (132), one end of the first reinforcement plate (131) is vertically connected to one end of the second reinforcement plate (132), the first reinforcement plate (131) is detachably connected to the longitudinal beam end plate (120), and the second reinforcement plate (132) is detachably connected to the longitudinal beam (110).

8. The vehicle body rear structure according to claim 7, characterized in that: At least one of the first reinforcement plates (131) is further provided with a positioning member (140), and the positioning member (140) passes through the tail skirt plate (200) and is connected to the trailer hook assembly (300).

9. The vehicle body rear structure according to claim 6, characterized in that: The longitudinal beam (110) is made of aluminum alloy material, and the reinforcement beam assembly (400), the longitudinal beam end plate (120) and the transition reinforcement plate (130) are made of steel material.

10. A vehicle, characterized in that: The vehicle body rear structure comprises the vehicle body rear structure as claimed in any one of claims 1 to 9.

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