Vehicle body rear structure and vehicle

Abstract

The utility model provides a vehicle body rear structure and a vehicle. The vehicle body rear structure comprises a rear floor longitudinal beam, a bent corner position is formed at the bottom of the rear floor longitudinal beam, the corner position is close to the front section of the rear floor longitudinal beam in the rear floor longitudinal beam, and the corner position is lower than the rear floor panel between the front sections of the rear floor longitudinal beams on the two sides in the height direction of the whole vehicle. According to the vehicle body rear structure, the corner position on the rear floor longitudinal beam is lower than the rear floor panel between the front sections of the rear floor, so that rear collision force can be smoothly transmitted to the front sections of the rear floor longitudinal beam when the vehicle collides backwards, the rear floor longitudinal beam can be prevented from being bent and deformed towards the front of the vehicle at the corner position, and the vehicle body rear structure is simple in structure and convenient to use. Therefore, the rear collision safety of the whole vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and particularly relates to a rear body structure; at the same time, the utility model also relates to a vehicle provided with the rear body structure. Background Art

[0002] The crash safety of a vehicle is an important part in vehicle design. By improving the crashworthiness of the vehicle, controlling the movement of the occupants and reducing the contact stiffness, etc., the occupants can be protected from harm to the greatest extent. At the same time, through methods such as real vehicle crash tests and simulated crash tests, the crash safety of the vehicle can be comprehensively evaluated, providing an important basis for the safety design of the vehicle.

[0003] In the prior art, the corner position of the bottom bend of the rear floor longitudinal beam is usually designed according to surrounding components, etc. Due to the unreasonable design of the corner position, when the vehicle has a rear collision, it is easy to cause the rear collision force not to be smoothly transmitted to the front section of the rear floor longitudinal beam, resulting in the rear floor longitudinal beam being bent and deformed in the forward direction of the vehicle at the corner position, and it is easy to cause the force on the occupant position, thus affecting the safety of the whole vehicle in a rear collision. Summary of the Utility Model

[0004] In view of this, the utility model aims to propose a rear body structure to improve the rear collision safety of the whole vehicle.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A rear body structure includes a rear floor longitudinal beam; a bent corner position is formed at the bottom of the rear floor longitudinal beam, the corner position is close to the front section of the rear floor longitudinal beam in the rear floor longitudinal beam, and in the vehicle height direction, the corner position is arranged lower than the rear floor panel between the front sections of the two rear floor longitudinal beams on both sides.

[0007] Further, a front mounting point of the rear subframe is provided on the rear floor longitudinal beam, and the corner position is located behind the front mounting point of the rear subframe and is arranged close to the front mounting point of the rear subframe.

[0008] Further, a front mounting plate of the rear subframe is provided at the bottom of the rear floor longitudinal beam, and the front mounting point of the rear subframe is arranged on the front mounting plate of the rear subframe.

[0009] Further, a front mounting support plate of the rear subframe is arranged inside the rear floor longitudinal beam, and the front mounting point of the rear subframe penetrates through the front mounting plate of the rear subframe, the rear floor longitudinal beam and the front mounting support plate of the rear subframe together.

[0010] Furthermore, a cavity is formed between the front mounting plate of the rear subframe and the longitudinal rear floor beam, and / or a cavity is formed between the front support plate for mounting the rear subframe and the longitudinal rear floor beam.

[0011] Furthermore, the longitudinal rear floor beam includes a middle section of the longitudinal rear floor beam and a rear section of the longitudinal rear floor beam that are sequentially connected behind the front section of the longitudinal rear floor beam; the corner position and the front mounting point of the rear subframe are both located on the middle section of the longitudinal rear floor beam.

[0012] Furthermore, the front section of the longitudinal rear floor beam, the middle section of the longitudinal rear floor beam, and the rear section of the longitudinal rear floor beam are integrally formed, or the front section of the longitudinal rear floor beam, the middle section of the longitudinal rear floor beam, and the rear section of the longitudinal rear floor beam are connected by laser welding.

[0013] Furthermore, a rear reinforcing plate of the longitudinal rear floor beam is provided inside the rear section of the longitudinal rear floor beam, and the rear reinforcing plate of the longitudinal rear floor beam extends along the length direction of the longitudinal rear floor beam.

[0014] Furthermore, a front reinforcing plate of the longitudinal rear floor beam is provided inside the middle section of the longitudinal rear floor beam, the front reinforcing plate of the longitudinal rear floor beam extends along the length direction of the longitudinal rear floor beam, the front section of the front reinforcing plate of the longitudinal rear floor beam extends into the front section of the longitudinal rear floor beam, and the rear end of the front reinforcing plate of the longitudinal rear floor beam is connected to the rear reinforcing plate of the longitudinal rear floor beam.

[0015] Compared with the prior art, the present utility model has the following advantages:

[0016] In the vehicle rear structure of the present utility model, by setting the corner position on the longitudinal rear floor beam lower than the rear floor panel between the front sections of the rear floor, when the vehicle is rear-ended, the rear-end collision force can be smoothly transmitted to the front section of the longitudinal rear floor beam, which helps to avoid the longitudinal rear floor beam being bent and deformed in the forward direction at the corner position, causing stress on the occupant position, and is beneficial to improving the rear-end collision safety of the whole vehicle.

[0017] Secondly, the setting of the front mounting point of the rear subframe on the longitudinal rear floor beam is beneficial to the setting of the front mounting point of the rear subframe. The corner position is located behind the front mounting point of the rear subframe, which can ensure the reliability of the front mounting point of the rear subframe. By setting the front mounting plate of the rear subframe, it is beneficial to the setting of the front mounting point of the rear subframe and can ensure the reliability of the front mounting point of the rear subframe. The front support plate for mounting the rear subframe and the front mounting point of the rear subframe penetrate through the front mounting plate of the rear subframe, the longitudinal rear floor beam, and the front support plate for mounting the rear subframe, which can further increase the structural strength of the front mounting point of the rear subframe and ensure the stability of the rear subframe installation.

[0018] Furthermore, cavities are formed between the front mounting plate of the rear subframe and the longitudinal member of the rear floor, as well as between the front support plate for mounting the rear subframe and the longitudinal member of the rear floor. By taking advantage of the high structural strength of the cavity structure, the stiffness at the front mounting point of the rear subframe can be better improved. The longitudinal member of the rear floor is composed of three sections: the front section of the longitudinal member of the rear floor, the middle section of the longitudinal member of the rear floor, and the rear section of the longitudinal member of the rear floor, which is conducive to the styling design and preparation of the longitudinal member of the rear floor and helps reduce the manufacturing cost of the longitudinal member of the rear floor.

[0019] In addition, the front of the longitudinal member of the rear floor, the front section of the longitudinal member of the rear floor, the middle section of the longitudinal member of the rear floor, and the rear section of the longitudinal member of the rear floor are integrally formed, which is beneficial to improving the overall structural strength and manufacturing efficiency of the longitudinal member of the rear floor. The front section of the longitudinal member of the rear floor, the middle section of the longitudinal member of the rear floor, and the rear section of the longitudinal member of the rear floor are connected by laser welding, which is conducive to different designs at various positions of the longitudinal member of the rear floor and also has the advantage of good connection effect. By providing a rear reinforcing plate for the longitudinal member of the rear floor, the structural strength at the rear position of the longitudinal member of the rear floor can be improved, and the collision force transmission ability at the rear of the longitudinal member of the rear floor can be enhanced. By providing a front reinforcing plate for the longitudinal member of the rear floor, the structural strength at the front position of the longitudinal member of the rear floor can be increased, which is beneficial to improving the collision force transmission ability at the front of the longitudinal member of the rear floor.

[0020] In addition, another object of the present invention is to provide a vehicle, in which the rear body structure described above is provided.

[0021] For the vehicle of the present invention, by providing the rear body structure as described above, the rear collision safety of the vehicle is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which form a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0023] Figure 1 is a schematic structural view of the rear body structure according to an embodiment of the present invention from a first perspective;

[0024] Figure 2 is a schematic structural view of the rear body structure according to an embodiment of the present invention from a second perspective;

[0025] Figure 3 is a schematic structural view of the rear body structure according to an embodiment of the present invention from a third perspective;

[0026] Figure 4 is Figure 3 a cross-sectional view taken along the A-A direction in

[0027] Figure 5 is a schematic structural view of the longitudinal member of the rear floor according to an embodiment of the present invention;

[0028] Figure 6 Schematic structural diagram of the front reinforcement plate of the rear floor longitudinal beam and the rear reinforcement member of the rear floor longitudinal beam according to an embodiment of the present utility model;

[0029] Figure 7 Schematic structural diagram of the front mounting plate of the rear subframe according to an embodiment of the present utility model;

[0030] Figure 8 Schematic structural diagram of the front mounting support plate of the rear subframe according to an embodiment of the present utility model.

[0031] Explanation of reference numerals:

[0032] 1. Rear floor longitudinal beam; 2. Threshold beam;

[0033] 100. First cavity; 101. Front section of the rear floor longitudinal beam; 102. Middle section of the rear floor longitudinal beam; 103. Rear section of the rear floor longitudinal beam; 104. Front mounting plate of the rear subframe; 1041. Protruding part; 105. Through hole; 106. Front mounting support plate of the rear subframe; 1061. Connecting flange; 1062. Third reinforcing rib; 107. Front reinforcement plate of the rear floor longitudinal beam; 108. Rear reinforcement plate of the rear floor longitudinal beam; 109. First reinforcing rib; 110. Second reinforcing rib;

[0034] M. Corner position; N. Extension surface of the rear floor panel. Detailed implementation manners

[0035] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0036] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0037] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", "connecting member" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0038] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0039] This embodiment relates to a rear body structure, aiming to solve the problem that due to the unreasonable design of the corner position in the rear floor longitudinal beam 1 in the prior art, when a rear collision occurs to the vehicle, it is easy to cause the rear collision force to fail to be smoothly transmitted to the front section 101 of the rear floor longitudinal beam, resulting in the rear floor longitudinal beam 1 being bent and deformed towards the vehicle front direction at the corner position, causing force on the occupant position, and thus affecting the safety of the whole vehicle in a rear collision.

[0040] In terms of the overall composition, the rear body structure described in this embodiment includes a rear floor longitudinal beam 1. A bent corner position M is formed at the bottom of the rear floor longitudinal beam 1. The corner position M is close to the front section 101 of the rear floor longitudinal beam in the rear floor longitudinal beam 1, and in the vehicle height direction, the corner position M is lower than the rear floor panel between the two front sections 101 of the rear floor longitudinal beam.

[0041] For the rear body structure described in this embodiment, by setting the corner position M on the rear floor longitudinal beam 1 lower than the rear floor panel between the front sections of the rear floor, when a rear collision occurs to the vehicle, the rear collision force can be smoothly transmitted to the front section 101 of the rear floor longitudinal beam, which helps to avoid the rear floor longitudinal beam 1 being bent and deformed towards the vehicle front direction at the corner position, causing force on the occupant position, and thus is beneficial to improving the rear collision safety of the whole vehicle.

[0042] Based on the above overall introduction, some exemplary structures of the rear body structure in this embodiment are as Figures 1 to 3 shown in the figure. The rear floor longitudinal beam 1 is shaped following the rear floor. Among them, the front section of the longitudinal beam, which is the front part of the rear floor longitudinal beam 1, is located inside the rear end of the sill beam 2. The positional relationship between the extension surface N of the rear floor panel between the two front sections 101 of the rear floor longitudinal beam and the corner position M is as Figure 3 shown in the figure. Among them, the corner position M in this embodiment is specifically the minimum angle position on the front part of the rear floor longitudinal beam 1, and deformation is likely to occur at the corner position M during collision force transmission.

[0043] As a preferred implementation manner, as Figure 2 shown in the figure, a front mounting point of the rear subframe is provided on the rear floor longitudinal beam 1. The corner position M is located behind the front mounting point of the rear subframe and is arranged close to the front mounting point of the rear subframe. With such a setting, it is beneficial for the setting of the front mounting point of the rear subframe, making the corner position M located behind the front mounting point of the rear subframe, and can also ensure the reliability of the front mounting point of the rear subframe.

[0044] As Figure 5As shown, the rear floor longitudinal beam 1 in this embodiment includes a middle section 102 of the rear floor longitudinal beam and a rear section 103 of the rear floor longitudinal beam, which are sequentially connected behind the front section 101 of the rear floor longitudinal beam. Among them, the corner position M and the front mounting point of the rear subframe are both located on the middle section 102 of the rear floor longitudinal beam. Here, the front section 101 of the rear floor longitudinal beam, the middle section 102 of the rear floor longitudinal beam, and the three sections of the rear floor longitudinal beam 1 are arranged, which is beneficial to the styling design and preparation of the rear floor longitudinal beam 1 and helps reduce the manufacturing cost of the rear floor longitudinal beam 1.

[0045] Specifically, referring to Figure 3 and Figure 2 As shown, in the vehicle height direction, the front section 101 of the rear floor longitudinal beam is arranged lower and extends along the front-rear direction of the vehicle. The rear section 103 of the rear floor longitudinal beam is arranged higher and extends along the front-rear direction of the vehicle. The middle section 102 of the rear floor longitudinal beam is inclined in the front-rear direction of the vehicle and is connected between the rear end of the front section 101 of the rear floor longitudinal beam and the front end of the rear section 103 of the rear floor longitudinal beam. Moreover, the cross-sections of the front section 101 of the rear floor longitudinal beam, the middle section 102 of the rear floor longitudinal beam, and the rear floor longitudinal beam 1 are all in a "U" shape, and the three are connected to the rear floor to form a longitudinally connected cavity. Among them, a convex portion protruding downward is provided at the bottom of the front end of the middle section 102 of the rear floor longitudinal beam, and the tip of the convex portion is downward, thus forming the corner position M.

[0046] In some embodiments, the front section 101 of the rear floor longitudinal beam, the middle section 102 of the rear floor longitudinal beam, and the rear section 103 of the rear floor longitudinal beam are integrally formed, which is beneficial to improving the overall structural strength and manufacturing efficiency of the rear floor longitudinal beam 1. In other embodiments, the front section 101 of the rear floor longitudinal beam, the middle section 102 of the rear floor longitudinal beam, and the rear section 103 of the rear floor longitudinal beam are laser welded. This is beneficial to the different designs of each position of the rear floor longitudinal beam 1 and also has the advantage of good connection effect.

[0047] As a preferred embodiment, as Figure 2 and Figure 4 shown, a front mounting plate 104 of the rear subframe is provided at the bottom of the rear floor longitudinal beam 1, and the front mounting point of the rear subframe is arranged on the front mounting plate 104 of the rear subframe. By providing the front mounting plate 104 of the rear subframe, it is beneficial to set the front mounting point of the rear subframe and can ensure the reliability of the front mounting point of the rear subframe.

[0048] In terms of specific structure, as Figure 7 shown, the cross-section of the front mounting plate 104 of the rear subframe is in a "U" shape and is shaped following the middle section 102 of the rear floor longitudinal beam. Corresponding to the corner position M, a protruding portion 1041 shaped following the corner position M is also provided at the bottom of the front mounting plate 104 of the rear subframe, and the protruding portion 1041 is also pointed.

[0049] Referring to Figure 1As shown in the figure, in this embodiment, a front mounting support plate 106 for the rear subframe is provided inside the rear floor longitudinal beam 1, and the front mounting points of the rear subframe penetrate through the front mounting plate 104 of the rear subframe, the rear floor longitudinal beam 1, and the front mounting support plate 106 of the rear subframe. By providing the front mounting support plate 106 for the rear subframe, the structural strength of the front mounting points of the rear subframe can be further increased, ensuring the stability of the rear subframe installation.

[0050] As a preferred embodiment, in this embodiment, the front mounting points of the rear subframe can be, for example, threaded tubes provided in the rear floor longitudinal beam 1, and the threaded tubes penetrate through the through holes 105 on the front mounting plate 104 of the rear subframe, the rear floor longitudinal beam 1, and the front mounting support plate 106 of the rear subframe, and are welded to all three.

[0051] To further improve the stiffness of the position of the front mounting points of the rear subframe, as Figure 4 shown in the figure, a cavity is formed between the front mounting support plate 106 of the rear subframe and the rear floor longitudinal beam 1. To facilitate the distinction from the following cavities, the cavity between the front mounting support plate 106 of the rear subframe and the rear floor longitudinal beam 1 is called the first cavity 100. The setting of the first cavity 100 here can utilize the characteristic of the large structural strength of the cavity to better improve the stiffness of the position of the front mounting points of the rear subframe.

[0052] As Figure 8 shown in the figure, a first cavity 100 is formed between the front mounting support plate 106 of the rear subframe and the front section 101 of the rear floor longitudinal beam. In this embodiment, the middle of the front mounting support plate 106 of the rear subframe protrudes upward, and connecting flanges 1061 are respectively formed at the four peripheral edges of the bottom. The front mounting support plate 106 of the rear subframe is mounted on the front section 101 of the rear floor longitudinal beam through the connecting flanges 1061.

[0053] In some embodiments, a second cavity can also be formed between the front mounting plate 104 of the rear subframe and the rear floor longitudinal beam 1. At this time, the characteristic of the large structural strength of the cavity can also be utilized to further improve the stiffness of the position of the front mounting points of the rear subframe.

[0054] As a preferred embodiment, as Figure 1 and Figure 6 shown in the figure, a rear floor longitudinal beam rear strengthening plate 108 is provided inside the rear section 103 of the rear floor longitudinal beam, and the rear floor longitudinal beam rear strengthening plate 108 extends along the length direction of the rear floor longitudinal beam 1. By providing the rear floor longitudinal beam rear strengthening plate 108, the structural strength of the rear part of the rear floor longitudinal beam 1 can be improved, and the collision force transmission ability of the rear part of the rear floor longitudinal beam 1 can be improved. Specifically, during implementation, the cross-section of the rear floor longitudinal beam rear strengthening plate 108 is also in a "U" shape and is arranged following the rear floor longitudinal beam 1. The structure of the rear floor longitudinal beam rear strengthening plate 108 is simple and easy to arrange and implement.

[0055] Continue to combine Figure 1 and Figure 6 As shown, a front reinforcement plate 107 of the rear floor longitudinal beam is provided inside the middle section 102 of the rear floor longitudinal beam. The front reinforcement plate 107 of the rear floor longitudinal beam extends along the length direction of the rear floor longitudinal beam 1, and the front section of the front reinforcement plate 107 of the rear floor longitudinal beam extends into the front section 101 of the rear floor longitudinal beam. The rear end of the front reinforcement plate 107 of the rear floor longitudinal beam is connected to the rear reinforcement plate 108 of the rear floor longitudinal beam. The setting of the front reinforcement plate 107 of the rear floor longitudinal beam here can not only improve the structural strength of the front position of the rear floor longitudinal beam 1, but also facilitate the improvement of the collision force transmission ability of the front part of the rear floor longitudinal beam 1.

[0056] In this embodiment, the cross-section of the front reinforcement plate 107 of the rear floor longitudinal beam is also in a "U" shape, and the front reinforcement plate 107 of the rear floor longitudinal beam straddles the connection between the rear section 103 and the middle section 102 of the rear floor longitudinal beam, as well as the connection between the front section 101 and the middle section 102 of the rear floor longitudinal beam, so as to improve the connection strength among the front section 101, the middle section 102 and the rear section 103 of the rear floor longitudinal beam.

[0057] As Figure 4 shown, when setting the front reinforcement plate 107 of the rear floor longitudinal beam, the rear subframe mounting point also penetrates through the front reinforcement plate 107 of the rear floor longitudinal beam. The front mounting support plate 106 of the rear subframe is connected to the front reinforcement plate 107 of the rear floor longitudinal beam through the connecting flange 1061. The first cavity 100 is divided into two sub-cavities which are separated up and down by the front reinforcement plate 107 of the rear floor longitudinal beam. In this way, the characteristics of energy absorption and high stiffness of the laminated cavity can be used to improve the stiffness of the position of the front mounting point of the rear subframe.

[0058] To further improve the structural strength of the reinforcement plate in this embodiment, as Figure 6 shown, a first reinforcing rib 109 can also be provided at the bottom of the front reinforcement plate 107 and the rear reinforcement plate 108 of the rear floor longitudinal beam, and second reinforcing ribs 110 are respectively provided on both sides of the two. The structures of the first reinforcing rib 109 and the second reinforcing rib 110 here are simple, easy to arrange and implement, and have good strengthening effects. In addition, a third reinforcing rib 1062 can also be provided on the front mounting support plate 106 of the rear subframe to enhance its own structural strength. It can be understood that in this embodiment, the shape, position and quantity of each reinforcing rib can be adaptively adjusted according to the use requirements.

[0059] In the prior art, in the vehicle height direction, the corner position M of the rear floor longitudinal beam 1 is set higher than the rear floor panel between the front sections 101 of the two rear floor longitudinal beams. During a rear collision of the vehicle, the collision force is transmitted forward along the rear section 103 of the rear floor longitudinal beam to the corner position M and then cannot be smoothly transmitted to the front section 101 of the rear floor longitudinal beam, and bending deformation is likely to occur at the corner position M. Since the corner position M is higher than the rear floor panel, the deformation of the rear part of the vehicle body will deflect upward as a whole, and the corner position M will deform in the vehicle front direction, thus causing stress on the occupant position and further affecting the rear collision safety performance of the whole vehicle.

[0060] In the rear body structure described in this embodiment, by optimizing the positional relationship between the corner position M on the rear floor longitudinal beam 1 and the rear floor panel, the corner position M is made lower than the rear floor panel between the front sections 101 of the two rear floor longitudinal beams. During a rear collision of the vehicle, the overall structure of the rear floor longitudinal beam 1 is a continuous force transmission path, and the collision force can continue to be transmitted forward after passing through the corner position M, thereby improving the collision force transmission stability of the rear body structure.

[0061] In addition, through the cooperation of the front mounting plate 104 of the rear subframe and the front mounting support plate 106 of the rear subframe, it is beneficial to further improve the stiffness at the front mounting point of the rear subframe. Also, through the cooperation of the front reinforcement plate 107 of the rear floor longitudinal beam and the rear reinforcement plate 108 of the rear floor longitudinal beam, it is beneficial to further improve the structural strength of the rear floor longitudinal beam 1 and the transmission effect of the collision force.

[0062] In addition, this embodiment also relates to a vehicle, in which the rear body structure described above is provided.

[0063] For the vehicle described in this embodiment, by providing the rear body structure as above, it is beneficial to improve the rear collision safety of the vehicle.

[0064] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vehicle body rear structure, characterized in that: including a rear floor longitudinal member (1); A bent corner position (M) is formed at the bottom of the rear floor longitudinal beam (1), the corner position (M) is close to a rear floor longitudinal beam front section (101) in the rear floor longitudinal beam (1), and in the height direction of the whole vehicle, the corner position (M) is lower than the rear floor panel between the rear floor longitudinal beam front sections (101) on both sides.

2. The vehicle body rear structure according to claim 1, characterized in that: The rear floor longitudinal beam (1) is provided with a rear sub-frame front mounting point, and the corner position (M) is located behind the rear sub-frame front mounting point and is arranged close to the rear sub-frame front mounting point.

3. The vehicle body rear structure according to claim 2, characterized in that: A rear subframe front mounting plate (104) is provided at the bottom of the rear floor longitudinal beam (1), and the rear subframe front mounting point is provided on the rear subframe front mounting plate (104).

4. The rear vehicle body structure according to claim 3, characterized in that: A rear sub-frame front mounting support plate (106) is arranged inside the rear floor longitudinal beam (1), and the rear sub-frame front mounting point is arranged through the rear sub-frame front mounting plate (104), the rear floor longitudinal beam (1) and the rear sub-frame front mounting support plate (106).

5. The vehicle body rear structure according to claim 4, characterized in that: A cavity is formed between the front mounting plate (104) of the rear subframe and the rear floor longitudinal beam (1), and / or a cavity is formed between the front mounting support plate (106) of the rear subframe and the rear floor longitudinal beam (1).

6. The vehicle body rear structure according to any one of claims 2 to 5, characterized in that: The rear floor longitudinal beam (1) comprises a rear floor longitudinal beam middle section (102) and a rear floor longitudinal beam rear section (103) which are sequentially connected to the rear of the rear floor longitudinal beam front section (101); The corner position (M) and the front mounting point of the rear subframe are both located on the middle section (102) of the rear floor longitudinal beam.

7. The vehicle body rear structure according to claim 6, characterized in that: The front section (101) of the rear floor longitudinal beam, the middle section (102) of the rear floor longitudinal beam and the rear section (103) of the rear floor longitudinal beam are integrally formed, or the front section (101) of the rear floor longitudinal beam, the middle section (102) of the rear floor longitudinal beam and the rear section (103) of the rear floor longitudinal beam are laser welded together.

8. The vehicle body rear structure according to claim 6, characterized in that: A rear floor longitudinal beam rear reinforcement plate (108) is provided in the rear section (103) of the rear floor longitudinal beam, and the rear floor longitudinal beam rear reinforcement plate (108) extends along the length direction of the rear floor longitudinal beam (1).

9. The vehicle body rear structure according to claim 8, characterized in that: A rear floor longitudinal beam front reinforcement plate (107) is provided in the middle section (102) of the rear floor longitudinal beam. The rear floor longitudinal beam front reinforcement plate (107) extends along the length direction of the rear floor longitudinal beam (1), and the front section of the rear floor longitudinal beam front reinforcement plate (107) extends into the rear floor longitudinal beam front section (101). The rear end of the rear floor longitudinal beam front reinforcement plate (107) is connected to the rear floor longitudinal beam rear reinforcement plate (108).

10. A vehicle, characterized in that: The vehicle is provided with the vehicle body rear structure according to any one of claims 1 to 9.

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