Vehicle body rear structure and vehicle with same

Abstract

The utility model discloses a vehicle body rear structure and a vehicle with the vehicle body rear structure, the vehicle body rear structure comprises a rear floor annular beam, the rear floor annular beam is integrally formed, the rear floor annular beam comprises two rear longitudinal beams, and the two rear longitudinal beams extend front and back and are arranged at intervals left and right; the two rear longitudinal beam rear sections are respectively provided with a first connecting part, the two rear longitudinal beam rear sections are respectively connected to the rear ends of the two rear longitudinal beams through the first connecting parts, the rear longitudinal beam rear sections are provided with crumple guide areas, and the crumple guide areas are arranged on the rear sides of the first connecting parts; the first rear floor body is arranged on the rear side of the rear floor annular beam and fixedly connected between the two rear longitudinal beam rear sections, and the first rear floor body is provided with an installation area used for installing an IPS. According to the vehicle body rear structure, the crushing deformation of the vehicle body structure can be reduced, the living space and safety of rear collision passengers are improved, the collision and extrusion force borne by the IPS can be reduced, and the risk that the IPS is damaged and breaks out of fire is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vehicle body rear structure and a vehicle having the same. Background Art

[0002] In the rear impact test, the rear area of ​​the vehicle is severely deformed. The rear area of ​​new energy vehicles is usually equipped with an intelligent power system module (IPS). In the rear impact test, the IPS module is very susceptible to severe impact. How to prevent the IPS module from being damaged in the rear impact condition, thereby causing high-voltage short circuit and fire, is a major technical pain point and difficulty in the current industry. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a vehicle body rear structure, which can reduce the crushing deformation of the vehicle body structure, improve the survival space of rear-end collision passengers, improve safety, and at the same time reduce the collision and extrusion force on the IPS, reduce the risk of IPS damage and fire, and reduce the risk of fire after the vehicle is hit from behind.

[0004] According to the utility model, the rear vehicle body structure includes: a rear floor annular beam, which is integrally formed and includes: two rear longitudinal beams, which extend front and rear and are arranged at intervals from left to right; two rear longitudinal beam rear sections, which each have a first connecting portion, and the two rear longitudinal beam rear sections are respectively connected to the rear ends of the two rear longitudinal beams through the first connecting portion, and a crush guide area is provided on the rear longitudinal beam rear section, and the crush guide area is provided on the rear side of the first connecting portion; a first rear floor body, which is arranged on the rear side of the rear floor annular beam and fixedly connected between the two rear longitudinal beam rear sections, and has an installation area for installing an IPS.

[0005] According to the rear vehicle body structure of the utility model, by arranging a crush guide area at the rear section of the rear longitudinal beam, the first rear floor body can be prevented from directly colliding with the front vehicle compartment, thereby reducing the crushing deformation of the vehicle body structure, improving the survival space and safety of the rear-end collision occupants; at the same time, it can also prevent the IPS from directly colliding and squeezing with the front vehicle compartment, thereby reducing the collision and squeezing force on the IPS, reducing the risk of IPS being damaged and catching fire, and thus reducing the risk of the vehicle catching fire after a rear-end collision.

[0006] According to some embodiments of the utility model, the collapse guide area is formed on the upper surface of the rear section of the rear longitudinal beam, and the collapse guide area is formed with a downwardly recessed collapse groove or a first collapse hole penetrating the upper surface in the up and down directions, and the collapse groove or the first collapse hole extends left and right and penetrates the left and right sides of the rear section of the rear longitudinal beam.

[0007] According to some embodiments of the utility model, the rear vehicle body structure also includes: a mounting bracket, the mounting bracket is used to install the IPS, a second collapse hole is formed on the mounting bracket and / or the mounting area, and a fastener passes through the second collapse hole to fix the mounting bracket to the first rear floor body.

[0008] According to some embodiments of the present invention, the second collapse hole has a mounting portion and a collapse portion, the mounting portion is formed in a circular shape, the collapse portion extends forward and backward and is connected to the mounting portion, and the width of the collapse portion is smaller than the diameter of the mounting portion.

[0009] According to some embodiments of the utility model, the rear floor annular beam includes: a rear floor middle beam and a rear floor rear cross beam, the rear floor middle beam and the rear floor rear cross beam extend in the left-right direction and the left and right ends are respectively connected to the two rear longitudinal beams, the rear floor middle beam and the rear floor rear cross beam are arranged in sequence from the front to the rear of the vehicle, the first rear floor body is fixedly connected to the rear floor rear cross beam, and the rear vehicle body structure also includes: a plurality of first reinforcements, the plurality of first reinforcements extend in the front-to-back direction and are spaced apart on the lower surface of the first rear floor body in the left-to-right direction, and one end of the plurality of first reinforcements is fixedly connected to the rear floor rear cross beam.

[0010] According to some embodiments of the utility model, the rear structure of the vehicle body also includes: a second rear floor body, which is fixedly connected between the front cross beam of the rear floor and the middle beam of the rear floor; a plurality of second reinforcements, which extend in the front-to-back direction and are arranged at intervals in the left-to-right direction on the lower surface of the second rear floor body, and the two ends of the plurality of second reinforcements are respectively fixedly connected to the rear cross beam of the rear floor and the middle beam of the rear floor.

[0011] According to some embodiments of the utility model, the rear structure of the vehicle body also includes: two rear wheel covers, which are respectively fixedly connected to the left and right sides of the rear floor ring beam; a rear wheel cover reinforcement plate, which extends up and down, one end of the rear wheel cover reinforcement plate is fixedly connected to the rear floor ring beam, and the other end of the rear wheel cover reinforcement plate is fixedly connected to the rear wheel cover, each rear wheel cover is connected to at least one rear wheel cover reinforcement plate, and a plurality of rear wheel cover reinforcement plates are arranged at intervals in the front-to-back direction.

[0012] According to some embodiments of the utility model, the rear structure of the vehicle body also includes: a rear anti-collision beam, which extends left and right, one end of the rear anti-collision beam is connected to the rear end of one rear longitudinal beam rear section, and the other end of the rear anti-collision beam is connected to the rear end of another rear longitudinal beam rear section; an energy absorption box, which is connected between the rear end of the rear longitudinal beam rear section and the rear anti-collision beam.

[0013] According to some embodiments of the present utility model, the rear section of the rear longitudinal beam is formed as a frame structure extending front to back and having a Japanese-shaped cross section.

[0014] A vehicle according to a second aspect of the present invention comprises an IPS and a vehicle body rear structure according to the first aspect of the present invention.

[0015] According to the vehicle of the utility model, the overall performance of the vehicle is improved by providing the box body rear structure of the first aspect.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a vehicle body rear structure according to an embodiment of the utility model;

[0018] Figure 2 is a schematic diagram of the rear structure of the vehicle body according to another angle of the embodiment of the utility model;

[0019] Figure 3 is a schematic diagram of the rear structure of the vehicle body according to another angle of the embodiment of the utility model;

[0020] Figure 4 yes Figure 1 A schematic diagram of the rear section of the rear longitudinal beam shown in ;

[0021] Figure 5 yes Figure 2 A partial schematic diagram of the rear floor ring beam shown in ;

[0022] Figure 6 It is a schematic diagram of the second collapse hole.

[0023] Reference numerals:

[0024] 100. Rear structure of the vehicle body;

[0025] 10. Rear floor ring beam; 11. Rear floor front cross beam; 12. Rear floor middle beam; 13. Rear floor rear cross beam; 14. Rear longitudinal beam;

[0026] 20. rear section of rear longitudinal beam; 21. first connecting portion; 22. crush guide area;

[0027] 30. first rear floor body; 31. second collapse hole; 311. mounting portion; 312. collapse portion;

[0028] 41. Second rear floor body; 42. Third rear floor body;

[0029] 51. first reinforcement member; 52. second reinforcement member;

[0030] 60. Rear anti-collision beam; 70. Energy absorption box. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] Reference below Figure 1-Figure 6 A vehicle body rear structure 100 according to an embodiment of the first aspect of the present invention is described.

[0033] like Figure 1-Figure 2 As shown, the vehicle body rear structure 100 according to the embodiment of the utility model includes: a rear floor ring beam 10, two rear longitudinal beam rear sections 20 and a first rear floor body 30, wherein the rear floor ring beam 10 is integrally formed, thus reducing the difficulty of assembling the vehicle body rear structure 100, thereby improving the production convenience of the vehicle body rear structure 100; at the same time, it can also reduce the number of parts and welding points required for the vehicle body rear structure 100, reduce the risk of stress cracking of the vehicle body rear structure 100, and improve the overall quality of the vehicle body rear structure 100.

[0034] Specifically, the rear floor ring beam 10 includes: two rear longitudinal beams 14, which extend front and rear and are arranged at intervals left and right. Among them, the rear longitudinal beams 14 are an important part of the body frame structure, providing the main load-bearing capacity of the rear of the vehicle, supporting the body and interior decoration, and connected with other components such as the rear suspension system, rear axle, etc., to jointly maintain the overall rigidity and stability of the vehicle; at the same time, when a rear collision occurs, the rear longitudinal beams 14 can also absorb and disperse the impact force through their own collapse deformation, thereby reducing the energy transmitted to the interior of the car, thereby protecting the passenger compartment from damage and reducing the risk of passenger injury.

[0035] The two rear longitudinal beam rear sections 20 each have a first connection portion 21, and the two rear longitudinal beam rear sections 20 are respectively connected to the rear ends of the two rear longitudinal beams 14 through the first connection portions 21. A crush guide area 22 is provided on the rear longitudinal beam rear section 20, and the crush guide area 22 is provided on the rear side of the first connection portion 21; the first rear floor body 30 is arranged on the rear side of the rear floor annular beam 10, and is fixedly connected between the two rear longitudinal beam rear sections 20, and the first rear floor body 30 has an installation area for installing an IPS (Intelligent Power System / intelligent power system module).

[0036] The first rear floor body 30 is the floor at the position of the vehicle trunk, which mainly plays a bearing role. The two rear longitudinal beam rear sections 20 are connected to the rear ends of the two rear longitudinal beams 14 and to the left and right sides of the first rear floor body 30, which can play a fixed supporting role for the first rear floor body 30. At the same time, the two rear longitudinal beam rear sections 20 are closer to the rear of the vehicle than the two rear longitudinal beams 14. When the vehicle is hit from behind, the two rear longitudinal beam rear sections 20 will first collapse and absorb energy, thereby reducing the collision energy transmitted to the rear floor ring beam 10, thereby reducing the risk of rupture and damage of the rear floor ring beam 10, and further improving the maintenance economy of the vehicle.

[0037] It should be noted that the crush guide area 22 can undergo a crushing deformation when subjected to force. Therefore, when the vehicle encounters a rear-end collision, the rear section 20 of the rear longitudinal beam can be deformed in a preset manner, thereby driving the first rear floor body 30 to deform in a preset manner, preventing the first rear floor body 30 from directly colliding with the front compartment, thereby reducing the crushing deformation of the vehicle body structure, improving the survival space and safety of the rear-end collision occupants; in addition, an IPS is also installed on the first rear floor body 30. Therefore, the crush guide area 22 can also prevent the IPS from directly colliding and squeezing with the front compartment, thereby reducing the collision and squeezing force on the IPS and reducing the risk of IPS being damaged and catching fire.

[0038] According to the rear vehicle body structure 100 of the embodiment of the utility model, by providing a crush guide area 22 at the rear section 20 of the rear longitudinal beam, it is possible to prevent the first rear floor body 30 from directly colliding with the front vehicle compartment, thereby reducing the amount of crushing deformation of the vehicle body structure, improving the survival space and safety of rear-end collision occupants; at the same time, it is also possible to prevent the IPS from directly colliding and squeezing with the front vehicle compartment, thereby reducing the collision and squeezing force on the IPS, reducing the risk of IPS being damaged and catching fire, and thus reducing the risk of the vehicle catching fire after a rear-end collision.

[0039] According to some embodiments of the present invention, Figure 4As shown, the collapse guide area 22 is formed on the upper surface of the rear section 20 of the rear longitudinal beam, and the collapse guide area 22 is formed with a collapse groove that is concave downward or a first collapse hole that passes through the upper surface in the up-down direction, and the collapse groove or the first collapse hole extends left and right and passes through the left and right sides of the rear section 20 of the rear longitudinal beam. It can be understood that the collapse guide area 22 can be formed with a collapse groove that is concave downward, and can also be formed with a first collapse hole that passes through the upper surface in the up-down direction. Among them, the crush groove or the first crush hole can provide a deformation space for the deformation of the rear section 20 of the rear longitudinal beam. At the same time, the crush guide area 22 is formed on the upper surface of the rear section 20 of the rear longitudinal beam and the crush groove or the first crush hole extends left and right and passes through the left and right sides of the rear section 20 of the rear longitudinal beam, which can limit the deformation direction of the rear section 20 of the rear longitudinal beam, so that when the rear section 20 of the rear longitudinal beam is subjected to external force, it can bend and deform upward along the crush groove or the first crush hole, and then the IPS arranged above the first rear floor body 30 can be turned upward and move forward in a posture of being squeezed by a plane, thereby reducing the collision / extrusion force on the IPS and reducing the probability of the IPS being damaged and catching fire.

[0040] According to some embodiments of the utility model, the rear vehicle body structure 100 further includes: a mounting bracket, the mounting bracket is used to mount the IPS, a second collapse hole 31 is formed on the mounting bracket and / or the mounting area, and a fastener passes through the second collapse hole 31 to fix the mounting bracket on the first rear floor body 30. It is understandable that the second collapse hole 31 may be formed only on the mounting bracket, or only on the mounting area of ​​the first rear floor body 30, or both the mounting bracket and the mounting area may be formed with the second collapse hole 31. It is understandable that the second collapse hole 31 is a collapsible mounting hole, so that when the vehicle is hit from behind, the second collapse hole 31 can enable the mounting bracket to be displaced relative to the first rear floor, thereby reducing the transient impact load on the IPS, and further reducing the risk of collision short circuit and fire of the IPS.

[0041] According to some embodiments of the present invention, Figure 6 As shown, the second collapse hole 31 has a mounting portion 311 and a collapse portion 312. The mounting portion 311 is formed in a circular shape. The collapse portion 312 extends forward and backward and is connected to the mounting portion 311. The width of the collapse portion 312 is smaller than the diameter of the mounting portion 311. The mounting portion 311 is used to install the fasteners that fix the mounting bracket and the first rear floor body 30. The collapse portion 312 is mainly used to provide space for the rearward movement of the fasteners, so that when the vehicle is hit from behind, the mounting bracket can be displaced relative to the first rear floor, thereby reducing the transient impact load on the IPS and further reducing the risk of collision short circuit and fire of the IPS. In addition, the width of the collapse portion 312 is smaller than the diameter of the mounting portion 311, which can ensure the installation stability of the mounting bracket and the first rear floor, and ensure the safety of the IPS.

[0042] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, the rear floor ring beam 10 includes: a rear floor middle beam 12 and a rear floor rear cross beam 13, the rear floor middle beam 12 and the rear floor rear cross beam 13 extend in the left-right direction and are respectively connected to two rear longitudinal beams 14 at both ends, and the rear floor middle beam 12 and the rear floor rear cross beam 13 are arranged in sequence from the front to the rear of the vehicle. It can be understood that the rear floor middle beam 12 and the rear floor rear cross beam 13 can increase the support strength of the rear longitudinal beam 14 in the left-right direction, so that when the vehicle is hit from behind, the rear floor middle beam 12 and the rear floor rear cross beam 13 can prevent the rear longitudinal beam 14 from deforming and becoming unstable due to the impact force.

[0043] The first rear floor body 30 is fixedly connected to the rear floor rear cross beam 13, and the vehicle body rear structure 100 also includes: a plurality of first reinforcements 51, which extend in the front-to-back direction and are spaced apart in the left-to-right direction on the lower surface of the first rear floor body 30, and one end of the plurality of first reinforcements 51 is fixedly connected to the rear floor rear cross beam 13. Among them, multiple first reinforcements 51 can increase the structural strength of the first rear floor body 30, and thus improve the bearing capacity of the first rear floor body 30. At the same time, the first rear floor body 30 is arranged at the rear of the rear floor rear cross beam 13. When the vehicle collides from behind, the first rear floor body 30 will first receive the collision force. Therefore, multiple first reinforcements 51 can increase the impact resistance of the first rear floor body 30; in addition, multiple first reinforcements 51 are fixedly connected to the rear floor rear cross beam 13, so that multiple first reinforcements 51 can also transfer the collision force transmitted to the first rear floor body 30 to the rear floor rear cross beam 13, and then transmit it to the entire rear part of the vehicle body through the rear floor annular beam 10, thereby improving the dispersion of the collision force and reducing the overall crushing deformation of the rear structure of the vehicle.

[0044] For example, the number of the first reinforcement members 51 may be two, three or more.

[0045] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, the vehicle body rear structure 100 also includes: a second rear floor body 41 and a plurality of second reinforcements 52, wherein the second rear floor body 41 is fixedly connected between the rear floor front cross beam 11 and the rear floor middle beam 12, and is mainly used for installing rear seats.

[0046] The plurality of second reinforcements 52 extend in the front-to-rear direction and are arranged at intervals in the left-to-right direction on the lower surface of the second rear floor body 41 . Both ends of the plurality of second reinforcements 52 are fixedly connected to the rear floor rear cross beam 13 and the rear floor middle beam 12 , respectively. Among them, on the one hand, multiple second reinforcements 52 are arranged on the lower surface of the second rear floor body 41, which can increase the structural strength of the second rear floor body 41, and thus improve the installation stability of the rear seats; on the other hand, the two ends of the multiple second reinforcements 52 are respectively fixedly connected to the rear floor rear cross beam 13 and the rear floor middle beam 12, so that the multiple second reinforcements 52 can support the rear floor rear cross beam 13 and the rear floor middle beam 12 in the front and rear directions, and can effectively reduce the deformation of the rear floor rear cross beam 13 and the rear floor middle beam 12 caused by the left and right forces, thereby further improving the structural strength of the rear structure 100 of the vehicle body; at the same time, the multiple second reinforcements 52 can also transfer the collision force transmitted to the rear floor rear cross beam 13 to the rear floor middle beam 12, thereby further dispersing the collision force, thereby further reducing the deformation of the rear structure 100 of the vehicle body, reducing the impact of the collision force on the passenger compartment, and improving the safety performance of the vehicle.

[0047] For example, the number of the second reinforcement members 52 may be two, three or more.

[0048] Reference Figure 3 The number of the first reinforcements 51 is three, the first reinforcements 51a, the first reinforcements 51b and the first reinforcements 51c extend in the front-to-back direction and are arranged at intervals from left to right, and the number of the second reinforcements 52 is two, the second reinforcements 52a and the second reinforcements 52b extend in the front-to-back direction and are arranged at intervals from left to right. In this way, when the vehicle collides from behind, the collision force can be transmitted through five transmission paths, two of which are: transmitted along the rear section 20 of the rear longitudinal beam to the rear longitudinal beam 14; the third path is: transmitted along the first reinforcement 51a toward the rear floor rear cross beam 13, and then transmitted to the rear longitudinal beam 14 and the second reinforcement 52a through the rear floor rear cross beam 13, and then transmitted to the entire vehicle body rear structure 100; the fourth path is: transmitted along the first reinforcement 51b toward the rear floor rear cross beam 13, and then transmitted to the rear longitudinal beam 14 and the second reinforcement 52a and the second reinforcement 52b through the rear floor rear cross beam 13, and then transmitted to the entire vehicle body rear structure 100; the fifth path is: transmitted along the first reinforcement 51c toward the rear floor rear cross beam 13, and then transmitted to the rear longitudinal beam 14 and the second reinforcement 52b through the rear floor rear cross beam 13, and then transmitted to the entire vehicle body rear structure 100. Among them, multiple paths can significantly reduce the force at the connection position between the rear section 20 of the rear longitudinal beam and the rear floor ring beam 10, thereby reducing the risk of local rupture and damage of the rear section 20 of the rear longitudinal beam and / or the rear floor ring beam 10, thereby improving the maintenance economy of the automobile.

[0049] Furthermore, for example Figure 3 As shown, the rear vehicle body structure 100 also includes: a third rear floor body 42 and a rear floor front cross beam 11, wherein the rear floor front cross beam 11 extends left and right and both ends are fixedly connected to the front ends of the two rear longitudinal beams 14, and the third rear floor body 42 is arranged between the rear floor front cross beam 11 and the rear floor middle beam 12, and is used for installing a middle seat.

[0050] According to some embodiments of the utility model, the rear vehicle body structure 100 also includes: two rear wheel covers and a rear wheel cover reinforcement plate, the two rear wheel covers are respectively fixedly connected to the left and right sides of the rear floor ring beam 10; the rear wheel cover reinforcement plate extends up and down, one end of the rear wheel cover reinforcement plate is fixedly connected to the rear floor ring beam 10, and the other end of the rear wheel cover reinforcement plate is fixedly connected to the rear wheel cover, each rear wheel cover is connected to at least one rear wheel cover reinforcement plate, and multiple rear wheel cover reinforcement plates are arranged at intervals in the front-to-back direction.

[0051] The number of the rear wheel cover reinforcement plates may be one or more, for example, the number of the rear wheel cover reinforcement plates may be one, two, three or more. Specifically, one end of the rear wheel cover reinforcement plate is connected to the rear floor ring beam 10, and the other end is fixedly connected to the rear wheel cover, so that the connection stiffness between the rear wheel cover and the main body structure can be increased, thereby improving the local strength of the rear part of the body, especially near the wheels. At the same time, when the vehicle passes over a bumpy road during driving, the rear wheel cover reinforcement plate can also disperse the road excitation received to the entire rear body structure 100, thereby improving the force dispersion and improving the NVH performance of the whole vehicle.

[0052] According to some embodiments of the present invention, Figure 1-Figure 3 As shown, the rear structure 100 of the vehicle body further includes: a rear anti-collision beam 60 and an energy absorption box 70. Specifically, the rear anti-collision beam 60 extends left and right, one end of the rear anti-collision beam 60 is connected to the rear end of a rear longitudinal beam rear section 20, and the other end of the rear anti-collision beam 60 is connected to the rear end of another rear longitudinal beam rear section 20, wherein the rear anti-collision beam 60 is arranged at the rear end of the rear longitudinal beam rear section 20, and is a device for the vehicle body to bear the rear impact force for the first time. When the vehicle collides from the rear, the rear anti-collision beam 60 first contacts and absorbs the impact force, thereby reducing the direct impact on the rear structure of the vehicle, reducing the impact force transmitted to the rear of the vehicle, and thereby improving the safety of the passenger compartment.

[0053] The energy absorption box 70 is connected between the rear end of the rear longitudinal beam rear section 20 and the rear anti-collision beam 60. The energy absorption box 70 is mainly used for crushing energy absorption, reducing the impact force transmitted to the rear longitudinal beam rear section 20, thereby reducing the damage to the rear longitudinal beam rear section 20 caused by the collision, thereby effectively reducing the impact force transmitted to the interior of the vehicle, protecting the safety of the passengers in the vehicle, and reducing the degree of damage to the vehicle.

[0054] When a rear collision occurs to the vehicle, the rear anti-collision beam 60 first contacts and absorbs the impact force, and then transfers the energy that cannot be absorbed to the energy-absorbing box 70. The energy-absorbing box 70 secondarily absorbs and disperses the collision energy, and then transfers it to the rear floor ring beam 10 and the entire rear part of the vehicle body through the rear section 20 of the rear longitudinal beam. Thus, the impact received during the vehicle collision can be effectively dispersed, thereby reducing the degree of damage to the vehicle and improving the vehicle's repair economy.

[0055] According to some embodiments of the present invention, as Figure 4 shown, the rear section 20 of the rear longitudinal beam is formed into a frame structure that extends longitudinally and has a "日" - shaped cross-section. Among them, the "日" - shaped frame structure can significantly improve the bending, torsion, and shear resistance of the rear section 20 of the rear longitudinal beam in the longitudinal and transverse directions. Thus, the overall structural strength of the rear section 20 of the rear longitudinal beam can be improved, and the crashworthiness of the vehicle can be enhanced; in addition, the "日" - shaped frame structure can also be understood as having a cavity formed inside the rear section 20 of the rear longitudinal beam. In this way, the overall weight of the rear section 20 of the rear longitudinal beam can be reduced, which helps to achieve the lightweight design of the vehicle; at the same time, the cavity can also serve as an energy-absorbing cavity. When the collision energy is transferred to the rear section 20 of the rear longitudinal beam, the rear section 20 of the rear longitudinal beam can undergo crush energy absorption, thereby reducing the collision energy transferred to the rear floor ring beam 10 and the rear floor, and thus protecting the squeezing force of the rear part structure 100 of the vehicle body on the occupant compartment and enhancing passenger safety.

[0056] The vehicle according to the second aspect embodiment of the present invention includes an IPS and the rear part structure 100 of the vehicle body according to the first aspect embodiment of the present invention.

[0057] The vehicle according to the embodiment of the present invention improves the overall performance of the vehicle by providing the box - type rear part structure 100 of the vehicle body in the above - mentioned first aspect embodiment.

[0058] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 invention.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vehicle body rear structure, characterized in that: include: A rear floor ring beam, the rear floor ring beam is integrally formed, and the rear floor ring beam comprises: two rear longitudinal beams, the two rear longitudinal beams extend front and rear and are arranged at intervals from left to right; Two rear longitudinal beam rear sections, each of the two rear longitudinal beam rear sections has a first connection portion, the two rear longitudinal beam rear sections are respectively connected to the rear ends of the two rear longitudinal beams through the first connection portion, and a collapse guide area is provided on the rear longitudinal beam rear section, and the collapse guide area is provided on the rear side of the first connection portion; The first rear floor body is arranged at the rear side of the rear floor annular beam and is fixedly connected between the rear sections of the two rear longitudinal beams. The first rear floor body has an installation area for installing the IPS.

2. The vehicle body rear structure according to claim 1, characterized in that: The collapse guide area is formed on the upper surface of the rear section of the rear longitudinal beam, and the collapse guide area is formed with a downwardly recessed collapse groove or a first collapse hole penetrating the upper surface in the up-down direction. The collapse groove or the first collapse hole extends left and right and penetrates the left and right sides of the rear section of the rear longitudinal beam.

3. The vehicle body rear structure according to claim 1, characterized in that: Also includes: A mounting bracket is used to mount the IPS, a second collapse hole is formed on the mounting bracket and / or the mounting area, and a fastener passes through the second collapse hole to fix the mounting bracket on the first rear floor body.

4. The vehicle body rear structure according to claim 3, characterized in that: The second collapse hole has a mounting portion and a collapse portion, the mounting portion is formed in a circular shape, the collapse portion extends frontward and rearward and is connected to the mounting portion, and the width of the collapse portion is smaller than the diameter of the mounting portion.

5. The vehicle body rear structure according to claim 1, characterized in that: The rear floor annular beam comprises: a rear floor middle beam and a rear floor rear cross beam, the rear floor middle beam and the rear floor rear cross beam extend in the left-right direction and the left and right ends are respectively connected to the two rear longitudinal beams, the rear floor middle beam and the rear floor rear cross beam are arranged in sequence from the front to the rear of the vehicle. The first rear floor body is fixedly connected to the rear cross beam of the rear floor, and the rear vehicle body structure also includes: a plurality of first reinforcements, which extend in the front-to-rear direction and are spaced apart in the left-to-right direction on the lower surface of the first rear floor body, and one end of the plurality of first reinforcements is fixedly connected to the rear cross beam of the rear floor.

6. The vehicle body rear structure according to claim 5, characterized in that: Also includes: a second rear floor body, the second rear floor body being fixedly connected between the rear floor front cross beam and the rear floor middle beam; A plurality of second reinforcements are provided, the plurality of second reinforcements extending in the front-to-rear direction and arranged at intervals in the left-to-right direction on the lower surface of the second rear floor body, and the two ends of the plurality of second reinforcements are respectively fixedly connected to the rear cross beam of the rear floor and the middle beam of the rear floor.

7. The vehicle body rear structure according to claim 1, characterized in that: Also includes: Two rear wheel covers, the two rear wheel covers are respectively fixedly connected to the left and right sides of the rear floor ring beam; A rear wheel cover reinforcement plate extends up and down, one end of the rear wheel cover reinforcement plate is fixedly connected to the rear floor ring beam, the other end of the rear wheel cover reinforcement plate is fixedly connected to the rear wheel cover, each rear wheel cover is connected to at least one rear wheel cover reinforcement plate, and a plurality of rear wheel cover reinforcement plates are arranged at intervals in the front-to-back direction.

8. The vehicle body rear structure according to claim 1, characterized in that: Also includes: A rear anti-collision beam, the rear anti-collision beam extending left and right, one end of the rear anti-collision beam connected to the rear end of one rear longitudinal beam rear section, and the other end of the rear anti-collision beam connected to the rear end of another rear longitudinal beam rear section; An energy absorption box is connected between the rear end of the rear section of the rear longitudinal beam and the rear anti-collision beam.

9. The vehicle body rear structure according to claim 1, characterized in that: The rear section of the rear longitudinal beam is formed into a frame structure extending frontward and rearward and having a Japanese-shaped cross section.

10. A vehicle, characterized in that: The invention comprises an IPS and a vehicle body rear structure according to any one of claims 1 to 9.

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