Rear floor structure integrated with closed-loop reinforcing ribs and vehicle

Abstract

The rear floor structure comprises a longitudinal beam section, a cross beam section and a plurality of reinforcing ribs, the longitudinal beam section, the cross beam section and the reinforcing ribs are integrally formed, and the longitudinal beam section comprises a first longitudinal beam and a second longitudinal beam which extend in the length direction of the vehicle and are distributed in the width direction of the vehicle at intervals; the cross beam section comprises a first cross beam and a second cross beam which are distributed between the first longitudinal beam and the second longitudinal beam at intervals, and the first longitudinal beam, the first cross beam, the second longitudinal beam and the second cross beam are sequentially connected end to end to form a hollow annular structure; the reinforcing ribs extend in the length direction of the longitudinal beam section and the transverse beam section and are longitudinally and transversely connected in the connecting area of the longitudinal beam section and the transverse beam section to form a first closed-loop structure and a second closed-loop structure, and the first closed-loop structure and the second closed-loop structure are distributed in an annular array mode relative to the hollow area of the annular structure. And the first closed-loop structures are distributed on the inner side of the second closed-loop structure at intervals. The torsion and bending rigidity of the rear structure of the vehicle can be effectively improved, and the requirement for light weight of the vehicle is met.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle structures, and in particular to a rear floor structure and a vehicle integrated with closed-loop reinforcement ribs. Background Art

[0002] A vehicle's rear floor structure generally refers to the section of the vehicle floor behind the passenger compartment. While supporting the various components within the rear floor assembly, it also absorbs and transmits energy during a collision, providing sufficient rigidity for the vehicle's frame. Conventional rear floor structures involve a large number of parts and diverse connection types, requiring the development of extensive molds, fixtures, and other tools to ensure production. Furthermore, multiple parts are assembled through various methods, including welding, screwing, and gluing. This complex structure and deep connections make production and assembly cumbersome and time-consuming, and results in large cumulative tolerances on component dimensions, low precision, and challenging quality control.

[0003] To address this issue, existing technologies propose using one-piece die-casting to manufacture rear floor structures, effectively improving the manufacturing cycle and dimensional accuracy of the connection. However, existing one-piece rear floor structures suffer from poor overall rigidity, resulting in lower vehicle safety performance. To improve their strength, existing technologies typically utilize various high-strength steel plates in rear floor structure designs. This is achieved by increasing the thickness of the steel plates to ensure structural rigidity, which not only increases the difficulty and complexity of the manufacturing process but also hinders vehicle lightweighting. Utility Model Content

[0004] In view of the above problems, the embodiments of the present application provide a rear floor structure and a vehicle integrated with closed-loop reinforcement ribs, which can effectively improve the torsional and bending stiffness of the entire vehicle and meet the lightweight requirements of the vehicle.

[0005] According to one aspect of an embodiment of the present application, a rear floor structure integrated with closed-loop reinforcement ribs is provided, the rear floor structure is an integrally formed part, including: a longitudinal beam section, the longitudinal beam section including a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam respectively extending along the length direction of the vehicle and spaced apart along the width direction of the vehicle; a cross beam section, the cross beam section including a first cross beam and a second cross beam, the first cross beam and the second cross beam are spaced apart between the first longitudinal beam and the second longitudinal beam along the length direction of the vehicle, and the first longitudinal beam, the first cross beam, the second longitudinal beam and the second cross beam are connected end to end in sequence to form a hollow annular structure; and a plurality of reinforcement ribs, the plurality of reinforcement ribs are extended along the length direction of the longitudinal beam section and the cross beam section, and are connected vertically and horizontally at the connection area between the longitudinal beam section and the cross beam section to form a first closed-loop structure and a second closed-loop structure, the first closed-loop structure and the second closed-loop structure are distributed in an annular array with respect to the hollow area of ​​the annular structure, and the first closed-loop structure is spaced apart on the inner side of the second closed-loop structure.

[0006] In an exemplary embodiment of the present application, the reinforcement ribs include: a first inner ring reinforcement rib, which is arranged on a side of the first longitudinal beam close to the hollow area and extends along the length direction of the first longitudinal beam; a second inner ring reinforcement rib, which is arranged on a side of the first cross beam close to the hollow area and extends along the length direction of the first cross beam; a third inner ring reinforcement rib, which is arranged on a side of the second longitudinal beam close to the hollow area and extends along the length direction of the second longitudinal beam; a fourth inner ring reinforcement rib, which is arranged on a side of the second cross beam close to the hollow area and extends along the length direction of the second cross beam; the first inner ring reinforcement rib, the second inner ring reinforcement rib, the third inner ring reinforcement rib and the fourth inner ring reinforcement rib are connected in sequence to form a first closed-loop structure.

[0007] In an exemplary embodiment of the present application, a first support portion is respectively provided on the relatively outer sides of the first longitudinal beam and the second longitudinal beam corresponding to the second cross beam, and both ends of the fourth inner ring reinforcement rib extend to the relatively outer sides of the second closed-loop structure along the length direction of the second cross beam and are connected to the two first support portions.

[0008] In an exemplary embodiment of the present application, both ends of the fourth inner ring reinforcement rib extend into the two first support portions respectively.

[0009] In an exemplary embodiment of the present application, the reinforcement ribs also include: a first outer ring reinforcement rib, which is arranged on the side of the first longitudinal beam away from the hollow area and extends along the length direction of the first longitudinal beam; a second outer ring reinforcement rib, which is arranged on the side of the first cross beam away from the hollow area and extends along the length direction of the first cross beam; a third outer ring reinforcement rib, which is arranged on the side of the second longitudinal beam away from the hollow area and extends along the length direction of the second longitudinal beam; a fourth outer ring reinforcement rib, which is arranged on the side of the second cross beam away from the hollow area and extends along the length direction of the second cross beam; the first outer ring reinforcement rib, the second outer ring reinforcement rib, the third outer ring reinforcement rib and the fourth outer ring reinforcement rib are connected in sequence to form a second closed-loop structure.

[0010] In an exemplary embodiment of the present application, a second support portion is provided on the relatively outer sides of the first longitudinal beam and the second longitudinal beam corresponding to the first crossbeam, and both ends of the second outer ring reinforcement rib extend along the length direction of the first crossbeam and are respectively connected to the two second support portions.

[0011] In an exemplary embodiment of the present application, both ends of the second outer ring reinforcement rib extend into the two second support portions respectively.

[0012] In an exemplary embodiment of the present application, a third support portion is respectively provided at the end of the first longitudinal beam close to the second cross beam and the end of the second longitudinal beam close to the second cross beam, the first outer ring reinforcement rib and the third outer ring reinforcement rib are respectively connected to the two third support portions, and both ends of the fourth outer ring reinforcement rib respectively extend into the two third support portions.

[0013] In an exemplary embodiment of the present application, it also includes: connecting ribs, which are connected between the first closed-loop structure and the second closed-loop structure, and the installation points of the rear floor structure for externally connecting vehicle parts are correspondingly arranged in the area where the connecting ribs are located, the area where the first closed-loop structure is located, the area where the second closed-loop structure is located, the overlapping area between the connecting ribs and the first closed-loop structure, and / or the overlapping area between the connecting ribs and the second closed-loop structure.

[0014] According to a second aspect of an embodiment of the present application, a vehicle is provided, comprising any of the above-mentioned rear floor structures integrated with closed-loop reinforcement ribs.

[0015] The present application integrates the subframe into the rear floor to form a ring structure that can connect the suspension and the body, and uses horizontally and vertically connected reinforcing ribs to form a first closed-loop structure and a second closed-loop structure, so as to form inner and outer ring closed-loop ribs on the rear floor structure, thereby effectively improving the torsional and bending stiffness of the entire vehicle. It can reduce the weight of the entire vehicle while eliminating the subframe and ensuring sufficient stiffness, thereby meeting the demand for lightweight vehicles.

[0016] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to more clearly understand the technical means of the embodiments of the present application, they can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of a rear floor structure integrated with closed-loop reinforcement ribs according to an embodiment of the present application is shown;

[0019] Figure 2 A top view of a rear floor structure integrated with closed-loop reinforcement ribs according to an embodiment of the present application is shown;

[0020] Figure 3 Shows a projection of the rear floor structure with integrated closed-loop reinforcement ribs according to an embodiment of the present application. Figure 1 ;

[0021] Figure 4 A perspective view of the rear floor structure with integrated closed-loop reinforcement ribs according to an embodiment of the present application is shown. Figure 2 .

[0022] Description of Figure Numbers:

[0023] 1-longitudinal beam section, 11-first longitudinal beam, 12-second longitudinal beam,

[0024] 2- beam segment, 21- first beam, 22- second beam,

[0025] 3-reinforcement rib, 31-first inner ring reinforcement rib, 32-second inner ring reinforcement rib, 33-third inner ring reinforcement rib, 34-fourth inner ring reinforcement rib, 35-first outer ring reinforcement rib, 36-second outer ring reinforcement rib, 37-third outer ring reinforcement rib, 38-fourth outer ring reinforcement rib,

[0026] 4-first support part, 5-second support part, 6-third support part, 7-connecting rib, 8-installation point,

[0027] 100-ring structure, 200-first closed-loop structure, 300-second closed-loop structure.

[0028] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0030] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0031] The present application is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0032] like Figure 1 and Figure 2As shown, this embodiment provides a rear floor structure integrated with closed-loop reinforcement ribs. The rear floor structure is an integrally formed part, including an integrally formed longitudinal beam section 1, a cross beam section 2, and a plurality of reinforcement ribs 3. The longitudinal beam section 1 includes a first longitudinal beam 11 and a second longitudinal beam 12, which extend along the vehicle length direction and are spaced apart along the vehicle width direction; the cross beam section 2 includes a first cross beam 21 and a second cross beam 22, which are spaced apart along the vehicle length direction between the first longitudinal beam 11 and the second longitudinal beam 12, and the first longitudinal beam 11, the first cross beam 21, the second longitudinal beam 12, and the second cross beam 22 are sequentially connected end to end to form a rear floor structure. The hollow annular structure 100 can be equipped with multiple mounting points 8 for connecting to external vehicle components, such as the suspension system, according to specific design requirements. The hollow area in the center of the annular structure 100 can be used to house the suspension system. A number of reinforcing ribs 3 extend along the length of the longitudinal beam section 1 and the transverse beam section 2, and are connected vertically and horizontally at the connection area between the longitudinal beam section 1 and the transverse beam section 2, forming a first closed-loop structure 200 and a second closed-loop structure 300. The first closed-loop structure 200 and the second closed-loop structure 300 are arranged in an inner and outer annular array relative to the hollow area of ​​the annular structure 100, with the first closed-loop structure 200 spaced apart inside the second closed-loop structure 300. In this way, the first closed-loop structure 200 and the second closed-loop structure 300, formed by the horizontally and vertically connected reinforcing ribs 3, form inner and outer closed-loop ribs on the rear floor structure, effectively improving the torsional and bending stiffness of the entire vehicle. This allows the vehicle to reduce weight while eliminating the subframe and ensuring sufficient stiffness, thus meeting the requirements for lightweighting.

[0033] It can be understood that the annular structure 100 formed by the longitudinal beam section 1 and the cross beam section 2 connected end to end has an upper end face and a lower end face opposite to each other in the vehicle height direction. When the reinforcing ribs 3 are extended along the length direction of the longitudinal beam section 1 and the cross beam section 2, they can be arranged on the upper end face, or on the lower end face, or they can be alternately arranged along the extension direction, partially on the upper end face and partially on the lower end face. According to the specific design requirements and the shape of the annular structure 100 itself, it is sufficient to ensure that the first closed-loop structure 200 and the second closed-loop structure 300 are distributed as inner and outer ring arrays on the horizontal projection plane. Similarly, the above-mentioned reinforcing ribs 3 are connected vertically and horizontally in the connection area between the longitudinal beam section 1 and the transverse beam section 2. They can be directly connected by abutment or cross-connection at the same end face, or they can be overlapped and connected at the upper and lower end faces. The selection can be made according to the specific design requirements and the shape of the annular structure 100 itself. The first closed-loop structure 200 and the second closed-loop structure 300 can be presented as inner and outer closed-loop ribs on the horizontal projection plane, ensuring that torque can be transmitted between the reinforcing ribs 3 along the annular structure 100, thereby achieving the purpose of improving the torsional and bending stiffness of the entire vehicle.

[0034] In some embodiments, as Figures 1 to 3As shown, the reinforcement rib 3 includes a first inner ring reinforcement rib 31, a second inner ring reinforcement rib 32, a third inner ring reinforcement rib 33 and a fourth inner ring reinforcement rib 34, wherein the first inner ring reinforcement rib 31 is arranged on the side of the first longitudinal beam 11 close to the hollow area and extends along the length direction of the first longitudinal beam 11; the second inner ring reinforcement rib 32 is arranged on the side of the first crossbeam 21 close to the hollow area and extends along the length direction of the first crossbeam 21; the third inner ring reinforcement rib 33 is arranged on the side of the second longitudinal beam 12 close to the hollow area and extends along the length direction of the first crossbeam 21; It extends along the length direction of the second longitudinal beam 12; the fourth inner ring reinforcement rib 34 is arranged on the side of the second cross beam 22 close to the hollow area, and extends along the length direction of the second cross beam 22; in this way, the first inner ring reinforcement rib 31, the second inner ring reinforcement rib 32, the third inner ring reinforcement rib 33 and the fourth inner ring reinforcement rib 34 are connected in sequence to form a first closed-loop structure 200, which can provide effective supporting strength for vehicle parts such as suspension systems placed in the hollow area of ​​the annular structure 100, and meet the internal rigidity requirements of the rear floor structure.

[0035] It is understandable that the first inner ring reinforcement rib 31 is provided with at least one, and the specific number of the reinforcement ribs 31 can be reasonably selected and arranged according to the design size, shape and modulus of the first longitudinal beam 11; for example, in this embodiment, Figure 3 As shown, two first inner ring reinforcing ribs 31 are provided. These two first inner ring reinforcing ribs 31 extend along the length of the first longitudinal beam 11 and are spaced parallel to each other in the width direction of the first longitudinal beam 11. This ensures that the load is evenly distributed on the side of the first longitudinal beam 11 closest to the hollow region. Similarly, the second inner ring reinforcing ribs 32, third inner ring reinforcing ribs 33, and fourth inner ring reinforcing ribs 34 are configured similarly to the first inner ring reinforcing ribs 31. The specific number, rib length, and thickness can be appropriately selected based on the design size, shape, and modulus of the corresponding beam, and will not be further described here.

[0036] In some embodiments, as Figures 1 to 4 As shown, a first support portion 4 is provided on the relatively outer sides of the longitudinal beam section 1, i.e., the first longitudinal beam 11 and the second longitudinal beam 12. The two first support portions 4 are provided corresponding to the second cross beam 22, and are suitable for connecting with the corresponding structural beams of the upper body and the rear shock absorber of the chassis; the two ends of the fourth inner ring reinforcement rib 34 extend to the relatively outer sides of the second closed-loop structure 300 along the length direction of the second cross beam 22, and are connected to the two first support portions 4, so that the load borne by the first support portion 4 can be transmitted through the fourth inner ring reinforcement rib 34 to achieve torque transmission, thereby ensuring its rigidity and strength performance.

[0037] Furthermore, if Figure 3 and Figure 4As shown, the two ends of the fourth inner ring reinforcement rib 34 extend into the two first support parts 4 respectively, which can realize structural support and shape coordination inside the first support part 4. In this way, when the corresponding structural beam of the upper body is connected to the first support part 4, it can cooperate with the second cross beam 22 and the fourth inner ring reinforcement rib 34 to form a closed ring structure distributed around the width direction of the vehicle, thereby increasing the corresponding moment of inertia and improving its connection strength performance; at the same time, there is no need to design a closed cavity when the first support part 4 is connected to the vehicle body, and the size and material thickness of the first support part 4 can be reduced, further reducing the space occupied by the rear floor structure, which is beneficial to the layout of other components of the vehicle.

[0038] In some embodiments, as Figures 1 to 3 As shown, the reinforcement rib 3 also includes a first outer ring reinforcement rib 35, a second outer ring reinforcement rib 36, a third outer ring reinforcement rib 37 and a fourth outer ring reinforcement rib 38, wherein the first outer ring reinforcement rib 35 is arranged on the side of the first longitudinal beam 11 away from the hollow area and extends along the length direction of the first longitudinal beam 11; the second outer ring reinforcement rib 36 is arranged on the side of the first crossbeam 21 away from the hollow area and extends along the length direction of the first crossbeam 21; the third outer ring reinforcement rib 37 is arranged on the side of the second longitudinal beam 12 away from the hollow area and extends along the length direction of the first crossbeam 21; The second longitudinal beam 12 extends in the length direction; the fourth outer ring reinforcement rib 38 is arranged on the side of the second cross beam 22 away from the hollow area, and extends along the length direction of the second cross beam 22; in this way, the first outer ring reinforcement rib 35, the second outer ring reinforcement rib 36, the third outer ring reinforcement rib 37 and the fourth outer ring reinforcement rib 38 are connected in sequence to form a second closed-loop structure 300, which can provide effective support strength for vehicle parts in the surrounding area of ​​the annular structure 100, such as the body side, the door sill beam, etc., to meet the external rigidity requirements of the rear floor structure.

[0039] It is understandable that the first outer ring reinforcement rib 35 is provided with at least one, and the specific number of the reinforcement ribs 35 can be reasonably selected and arranged according to the design size, shape and modulus of the first longitudinal beam 11; for example, in this embodiment, Figure 3 As shown, three first outer ring reinforcement ribs 35 are provided. These three first outer ring reinforcement ribs 35 extend along the length of the first longitudinal beam 11 and are spaced parallel to each other in the width direction of the first longitudinal beam 11. This ensures that the load is evenly distributed on the side of the first longitudinal beam 11 away from the hollow region. Similarly, the second outer ring reinforcement ribs 36, the third outer ring reinforcement ribs 37, and the fourth outer ring reinforcement ribs 38 are arranged in a similar manner to the first outer ring reinforcement ribs 35. Their placement can be appropriately selected based on the design size, shape, and modulus of the corresponding beams they are located in, and will not be further described here.

[0040] In some embodiments, as Figures 1 to 4As shown, the longitudinal beam section 1, i.e., the first longitudinal beam 11 and the second longitudinal beam 12, are further provided with a second support portion 5 on their respective outer sides. The two second support portions 5 are provided corresponding to the first cross beam 21 and are suitable for connection with the vehicle body rocker beam; the two ends of the second outer ring reinforcement rib 36 extend along the length direction of the first cross beam 21 and are respectively connected to the two second support portions 5, so that the load borne by the second support portion 5 can be transmitted through the second outer ring reinforcement rib 36 to achieve torque transmission, thereby ensuring its rigidity and strength performance.

[0041] Furthermore, if Figure 3 and Figure 4 As shown, both ends of the second outer ring reinforcement rib 36 extend into the two second support parts 5 respectively, which can achieve structural support and shape coordination in the second support parts 5. In this way, when the vehicle body rocker beam is connected to the second support part 5, it can cooperate with the first crossbeam 21 and the second outer ring reinforcement rib 36 to form a closed loop structure distributed around the width direction of the vehicle, thereby increasing the corresponding moment of inertia and improving its connection strength performance.

[0042] In some embodiments, as Figures 1 to 4 As shown, the end of the first longitudinal beam 11 close to the second cross beam 22 and the end of the second longitudinal beam 12 close to the second cross beam 22 are respectively provided with a third support portion 6, and the third support portion 6 is suitable for connecting with the rear body and the D-pillar beam; at this time, the first outer ring reinforcement 35 and the third outer ring reinforcement 37 are respectively connected to the two third support portions 6, so that the load borne by the third support portion 6 can be transmitted through the first outer ring reinforcement 35 and the third outer ring reinforcement 37 to ensure its rigidity and strength performance; at the same time, the two ends of the fourth outer ring reinforcement 38 extend into the two third support portions 6 respectively, and can realize structural support and shape coordination in the third support portion 6. In this way, when the rear body and the D-pillar beam are connected to the third support portion 6, they can cooperate with the second cross beam 22 and the fourth outer ring reinforcement 38 to form a closed loop structure, thereby increasing the corresponding moment of inertia and improving its connection strength performance.

[0043] In some embodiments, as Figures 1 to 3As shown, the rear floor structure also includes connecting ribs 7, which are arranged between the first closed-loop structure 200 and the second closed-loop structure 300 to connect the first closed-loop structure 200 and the second closed-loop structure 300 to each other. By locally increasing the connecting ribs 7, the rigidity of the area can be effectively improved, thereby forming the entire force-bearing area and the force-transmitting area into a whole, significantly improving the torsional and NVH performance of the entire vehicle; at the same time, the connecting ribs 7 can be reasonably arranged according to the arrangement orientation of the components and the corresponding rigidity requirements, with flexible arrangement and high design freedom. The mounting points 8 of the rear floor structure for externally connecting vehicle parts can be correspondingly arranged in the area where the connecting ribs 7 are located, the area where the first closed-loop structure 200 is located, the area where the second closed-loop structure 300 is located, the overlapping area between the connecting ribs 7 and the first closed-loop structure 200, and / or the overlapping area between the connecting ribs 7 and the second closed-loop structure 300, so that the force-bearing area is located on the main road rib structure, ensuring the dynamic rigidity and connection strength performance of the mounting point.

[0044] Furthermore, another embodiment provides a vehicle including the rear floor structure with integrated closed-loop reinforcement ribs according to the aforementioned embodiment. For other structural details and operating principles of the rear floor structure with integrated closed-loop reinforcement ribs, please refer to the aforementioned description of the embodiment of the rear floor structure with integrated closed-loop reinforcement ribs. Since the rear floor structure with integrated closed-loop reinforcement ribs has the aforementioned technical effects, a vehicle incorporating such a rear floor structure should also have the corresponding technical effects, and therefore will not be further elaborated here.

[0045] It is understood that, in this application, unless otherwise expressly specified or limited, terms such as "assembly" and "connection" should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0046] 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 technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined. And the descriptions of terms such as "some embodiments" and "exemplarily" mean 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 present application.

[0047] The illustrative descriptions 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 suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0048] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent covered by this application.

Claims

1. A rear floor structure integrated with closed-loop reinforcement ribs, characterized in that: The rear floor structure is an integrally formed part, comprising: A longitudinal beam section, the longitudinal beam section including a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam respectively extending in a vehicle length direction and spaced apart in a vehicle width direction; a crossbeam section, the crossbeam section including a first crossbeam and a second crossbeam, the first crossbeam and the second crossbeam being spaced apart and distributed between the first longitudinal beam and the second longitudinal beam along the length direction of the vehicle, and the first longitudinal beam, the first crossbeam, the second longitudinal beam and the second crossbeam being sequentially connected end to end to form a hollow annular structure; and A plurality of reinforcing ribs are provided, and the plurality of reinforcing ribs are extended along the length direction of the longitudinal beam section and the transverse beam section, and are connected vertically and horizontally in the connection area of ​​the longitudinal beam section and the transverse beam section to form a first closed-loop structure and a second closed-loop structure. The first closed-loop structure and the second closed-loop structure are distributed in a circular array with respect to the hollow area of ​​the annular structure, and the first closed-loop structure is distributed at intervals on the inner side of the second closed-loop structure.

2. The rear floor structure integrated with closed-loop reinforcement ribs according to claim 1, characterized in that: The reinforcing ribs include: a first inner ring reinforcement rib, provided on a side of the first longitudinal beam close to the hollow region and extending along the length direction of the first longitudinal beam; a second inner ring reinforcement rib, provided on a side of the first beam close to the hollow area and extending along the length direction of the first beam; a third inner ring reinforcement rib, provided on a side of the second longitudinal beam close to the hollow region and extending along the length direction of the second longitudinal beam; a fourth inner ring reinforcement rib, provided on a side of the second crossbeam close to the hollow area and extending along the length direction of the second crossbeam; The first inner ring reinforcement rib, the second inner ring reinforcement rib, the third inner ring reinforcement rib and the fourth inner ring reinforcement rib are sequentially connected to form the first closed-loop structure.

3. The rear floor structure integrated with closed-loop reinforcement ribs according to claim 2, characterized in that: Corresponding to the second cross beam, a first support portion is respectively provided on the relatively outer sides of the first longitudinal beam and the second longitudinal beam, and the two ends of the fourth inner ring reinforcement rib extend to the relatively outer sides of the second closed-loop structure along the length direction of the second cross beam and are connected to the two first support portions.

4. The rear floor structure integrated with closed-loop reinforcement ribs according to claim 3, characterized in that: Both ends of the fourth inner ring reinforcement rib extend into the two first support portions respectively.

5. The rear floor structure integrated with closed-loop reinforcement ribs according to any one of claims 1 to 4, characterized in that: The reinforcement bar further comprises: a first outer ring reinforcement rib, provided on a side of the first longitudinal beam away from the hollow area and extending along the length direction of the first longitudinal beam; a second outer ring reinforcement rib, provided on a side of the first beam away from the hollow area and extending along the length direction of the first beam; a third outer ring reinforcement rib, provided on a side of the second longitudinal beam away from the hollow area and extending along the length direction of the second longitudinal beam; a fourth outer ring reinforcement rib, provided on a side of the second crossbeam away from the hollow area and extending along the length direction of the second crossbeam; The first outer ring reinforcement rib, the second outer ring reinforcement rib, the third outer ring reinforcement rib and the fourth outer ring reinforcement rib are sequentially connected to form the second closed-loop structure.

6. The rear floor structure integrated with closed-loop reinforcement ribs according to claim 5, characterized in that: Corresponding to the first crossbeam, a second support portion is respectively provided on the opposite outer sides of the first longitudinal beam and the second longitudinal beam. Both ends of the second outer ring reinforcement rib extend along the length direction of the first crossbeam and are respectively connected to the two second support portions.

7. The rear floor structure integrated with closed-loop reinforcement ribs according to claim 6, characterized in that: Both ends of the second outer ring reinforcement rib extend into the two second support portions respectively.

8. The rear floor structure integrated with closed-loop reinforcement ribs according to claim 5, characterized in that: A third support portion is respectively provided at the end of the first longitudinal beam close to the second cross beam and the end of the second longitudinal beam close to the second cross beam, the first outer ring reinforcement rib and the third outer ring reinforcement rib are respectively connected to the two third support portions, and both ends of the fourth outer ring reinforcement rib respectively extend into the two third support portions.

9. The rear floor structure integrated with closed-loop reinforcement ribs according to any one of claims 1-4 or 6-8, characterized in that: Also includes: Connecting ribs, the connecting ribs are connected between the first closed-loop structure and the second closed-loop structure, and the mounting points of the rear floor structure for externally connecting vehicle parts are correspondingly arranged in the area where the connecting ribs are located, the area where the first closed-loop structure is located, the area where the second closed-loop structure is located, the overlapping area between the connecting ribs and the first closed-loop structure, and / or the overlapping area between the connecting ribs and the second closed-loop structure.

10. A vehicle, characterized in that: The invention comprises a rear floor structure integrated with closed-loop reinforcement ribs as described in any one of claims 1 to 9.

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