Aluminum alloy integrated die-casting rear floor structure of new energy automobile

Abstract

The aluminum alloy integrated die-casting rear floor structure of the new energy automobile comprises an integrally-formed rear floor framework, an opening vertically penetrating through the rear floor framework is formed in the rear floor framework, protrusions are arranged on the left side and the right side of the front end of the rear floor framework, and the protrusions are fixedly connected with a doorsill beam of an automobile body. The left side and the right side of the rear end of the rear floor framework are fixedly connected with rear floor edge beams of a vehicle body, reinforcing rib assemblies and mounting positions are distributed on the rear floor framework, and the rear floor framework is connected with the vehicle body or a shock absorber at the mounting positions. By arranging the integrally-formed rear floor framework, welding spots of the device in the production process are reduced so as to shorten the technological process, meanwhile, various reinforcing ribs are arranged on the framework so as to improve the structural strength of the whole device, and the structural strength of the whole device can be guaranteed while the functions of the whole device can be normally achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile rear floor structures, in particular to an aluminum alloy integrated die-casting rear floor structure for new energy vehicles. Background Art

[0002] Developing new energy vehicles is the only way for my country to move from a large automobile country to a powerful automobile country, and it is a strategic measure to cope with climate change and promote green development. Endurance is currently the main factor restricting the development of new energy vehicles. For new energy vehicles, reducing weight by 10% can improve energy efficiency by 9.5%.

[0003] At the same time, aluminum alloy materials as a kind of high specific strength, low density and mature forming process can be widely used in the field of automobile lightweighting. Therefore, lightweight aluminum alloy structures have a broad development prospect in the new energy vehicle industry.

[0004] The traditional rear floor assembly is assembled by assembling multiple sheet metal parts. The rear floor assembly processed by this manufacturing method requires more than 100 parts and has more than 1,000 welding points. The overall processing time takes about 3 hours. There are problems such as heavy assembly weight, large number of parts, complicated assembly process, high risk of welding failure, large production investment, large site requirements, relatively low efficiency and large cumulative tolerance errors of parts. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a vehicle body structure that is integrally formed to reduce the assembly weight and manufacturing cost.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: an integrated aluminum alloy die-cast rear floor structure for a new energy vehicle, comprising an integrally formed rear floor frame, an opening penetrating the rear floor frame from top to bottom, protrusions on the left and right sides of the front end of the rear floor frame, the protrusions are connected and fixed to the door sill beam of the vehicle body, the left and right sides of the rear end of the rear floor frame are connected and fixed to the rear floor beam of the vehicle body, reinforcing rib components and mounting positions are distributed on the rear floor frame, and the rear floor frame is connected to the vehicle body or the shock absorber at the mounting position.

[0007] The beneficial effect of the utility model is that by providing an integrally formed rear floor frame, the welding points of the device during the production process are reduced to shorten the process flow, and at the same time, a variety of reinforcing ribs are provided on the frame to improve the structural strength of the entire device, so that it can function normally while ensuring its structural strength.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the rear floor frame includes a cross beam and a longitudinal beam, and the cross beam and the longitudinal beam enclose the opening.

[0010] The above technical solution forms a rear floor frame of the vehicle body by arranging a crossbeam and a longitudinal beam and enclosing the two, so that the device can ensure its structural strength while matching the rear floor structures of most vehicles on the market.

[0011] Furthermore, the cross beam includes a middle cross beam and a rear cross beam, the longitudinal beam includes a left longitudinal beam and a right longitudinal beam, the left longitudinal beam and the right longitudinal beam extend in the front-to-back direction respectively and are arranged in parallel and spaced apart from each other on the left and right sides, the middle cross beam and the rear cross beam extend in the left-to-right direction and are connected between the left longitudinal beam and the right longitudinal beam at front-to-back intervals.

[0012] The above technical solution configures the cross beam and the longitudinal beam to be two mutually parallel skeleton beams, so that the device forms a hollow structure similar to a rectangle, so that it can better match the rear floor of the vehicle to better perform its function.

[0013] Furthermore, the reinforcing rib assembly is arranged on the middle cross beam, the rear cross beam, the left longitudinal beam and the right longitudinal beam, and the mounting position is arranged on the left longitudinal beam and the right longitudinal beam.

[0014] In order to match the positions of other vehicle connectors currently on the market, the above technical solution is provided with mounting points on the two longitudinal beams that match the vehicle body connectors, so that the entire device can be stably installed inside the vehicle body.

[0015] Furthermore, it also includes a rear floor side beam, which is connected and fixed to the rear floor beam of the vehicle body through a connecting piece.

[0016] The above technical solution arranges the rear floor side beam so that it can fit the rear floor frame of the vehicle body and stably connect and fix the two through the connecting piece.

[0017] Furthermore, the connecting member includes two rectangular connecting frames with inner cavities, the two rectangular connecting frames are respectively assembled at the left and right ends of the rear floor side beam, the rectangular connecting frame is provided with a cross reinforcing plate in its inner cavity, triangular connecting ribs are provided on the left and right sides of the lower end of the rectangular connecting frame, an opening connected to the inner cavity is provided at the rear end of the rectangular connecting frame, a plurality of mounting holes are provided at the left and right ends and the upper end of the rectangular connecting frame, through holes corresponding to the mounting holes are opened inside the cross reinforcing plate, and the rear floor side beam is connected and fixed to the rear floor beam of the vehicle body at the mounting holes by bolts.

[0018] The above technical solution provides a rectangular connecting frame with a cavity inside and a cross reinforcing plate inside, so that it can reduce the material consumption while ensuring its own structural strength, thereby improving the stability of the assembly after the rear floor device is assembled inside the vehicle body using the connecting parts.

[0019] Furthermore, the mounting position includes four frame mounting points, two shock absorber mounting points and two spring disk mounting surfaces. The two shock absorber mounting points are bowl-shaped structures equipped with shock absorbers and are respectively arranged on the upper surfaces of the left longitudinal beam and the right longitudinal beam. The spring disk of the shock absorber is connected and fixed to the spring disk mounting surfaces. The two spring disk mounting surfaces are respectively arranged on the lower surfaces of the left longitudinal beam and the right longitudinal beam. The four frame mounting points are grouped in pairs, and the two groups of frame mounting points are respectively arranged on the lower surfaces of the left longitudinal beam and the right longitudinal beam, and are distributed on the front and rear sides of the spring disk mounting surfaces. The left longitudinal beam and the right longitudinal beam are connected to the vehicle body at the frame mounting points through mounting parts.

[0020] The above technical solution sets a frame mounting point, and the device is connected and fixed to the automobile body at the frame mounting point, and is set on both sides of the spring disk mounting surface. When the device is connected and assembled, it is connected and fixed to the main body of the vehicle body shock absorber and the spring disk of the vehicle body shock absorber through the spring disk mounting surface and the shock absorber mounting point respectively, so that the device can have a shock-absorbing effect when assembled.

[0021] Furthermore, the mounting part includes a self-tapping bolt, which includes a bolt head and a bolt column. The bolt column is embedded in the frame mounting point, and an internal threaded hole extending along its length is provided inside the bolt column. The internal threaded hole is used for assembly and connection with the vehicle body.

[0022] The above technical solution assembles the mounting parts on the mounting points and uses the mounting parts for connection and installation, so that when the device and the vehicle body are installed at the frame mounting points, the connection performance of higher pulling force and breaking torque is achieved.

[0023] Furthermore, three cutting holes are provided at the bottom of the bolt column.

[0024] The above technical solution can improve the cutting force of the self-tapping bolt in the process of tapping the frame mounting point by designing three cutting holes at the bottom of the bolt column, and the aluminum chips generated during self-tapping can be discharged into the inner hole through the cutting holes, preventing the aluminum chips from clogging and causing tapping failure, thereby improving assembly efficiency.

[0025] Furthermore, the reinforcing rib assembly includes multiple longitudinal reinforcing ribs, multiple human-shaped reinforcing ribs, multiple wavy groove ribs, multiple longitudinal ribs, multiple triangular ribs and multiple raised ribs. Multiple longitudinal reinforcing ribs are arranged on the lower surface of the middle cross beam along the length direction thereof. A hollow area is provided inside the left longitudinal beam and the right longitudinal beam. Multiple human-shaped reinforcing ribs are assembled in the hollow area. Multiple wavy groove ribs are assembled on the lower surface of the middle cross beam. Multiple longitudinal ribs are circumferentially spaced at the lower end edges of the two shock absorber mounting points close to each other. Multiple triangular ribs are assembled at the connection between the left longitudinal beam, the right longitudinal beam and the middle cross beam and the rear cross beam. Multiple raised ribs extend in the front-to-back direction and are spaced at intervals on the lower surface of the middle cross beam.

[0026] The above technical solution provides a plurality of reinforcing ribs and assembles the plurality of reinforcing ribs on the device, thereby improving the structural strength of the device and enabling the structural strength of the device to be improved during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the top view structure in an embodiment of the utility model;

[0028] Figure 2 It is a bottom view structural schematic diagram of an embodiment of the utility model;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure in an embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the planar structure of the wavy grooved ribs in the embodiment of the utility model;

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure of a rectangular connecting frame in an embodiment of the utility model;

[0032] Figure 6 It is a schematic diagram of the planar structure of the self-tapping bolt in the embodiment of the utility model;

[0033] Figure 7 It is a schematic diagram of the three-dimensional structure of the self-tapping bolt in the embodiment of the utility model;

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure in an embodiment of the utility model.

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1. Middle cross beam; 2. Rear cross beam; 3. Left longitudinal beam; 4. Right longitudinal beam; 5. Frame mounting point; 6. Shock absorber mounting point; 7. Spring plate mounting surface; 8. Rear floor side beam; 9. Opening; 10. Longitudinal reinforcement ribs; 11. Humanoid reinforcement ribs; 13. Hollow area; 14. Wave-shaped groove ribs; 17. Rectangular connecting frame; 19. Self-tapping bolts; 20. Cutting holes; 21. Longitudinal ribs; 22. Triangular ribs; 23. Raised ribs; 29. ​​Cross reinforcement plate; 30. Triangular connecting ribs. DETAILED DESCRIPTION

[0037] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0038] Example

[0039] like Figure 1-8 As shown, an integrated aluminum alloy die-cast rear floor structure for a new energy vehicle includes an integrally formed rear floor frame, an opening 9 is provided inside the rear floor frame which passes through the frame from top to bottom, protrusions are provided on the left and right sides of the front end of the rear floor frame, the protrusions are connected and fixed to the door sill beam of the vehicle body, the left and right sides of the rear end of the rear floor frame are connected and fixed to the rear floor beam of the vehicle body, reinforcing rib components and mounting positions are distributed on the rear floor frame, and the rear floor frame is connected to the vehicle body or the shock absorber at the mounting position.

[0040] The working principle is: when the device is assembled, the rear floor frame is equipped with mounting points to enable it to perform its structural functions normally, and is also equipped with multiple reinforcing ribs to further improve the structural strength of the device.

[0041] The above technical solution can reduce the welding points of the device during the production process by setting an integrally formed rear floor frame to shorten the process flow, and at the same time set a variety of reinforcing ribs on the frame to improve the structural strength of the entire device, so that it can function normally while ensuring its structural strength.

[0042] Preferably, the rear floor frame includes a cross beam and a longitudinal beam, and the cross beam and the longitudinal beam enclose an opening 9 .

[0043] There are two cross beams and two longitudinal beams respectively, which are placed vertically and spaced apart from each other and connected and fixed. An opening 9 is formed in the middle of the frame after the two cross beams and the two longitudinal beams are connected and fixed.

[0044] The working principle is: by setting the cross beam and the longitudinal beam, the two enclose and form an opening 9, so as to facilitate matching the structure of the rear floor position of the vehicle body, and the opening 9 matches the trunk of the vehicle body to accommodate items.

[0045] The above technical solution forms a rear floor frame of the vehicle body by arranging a crossbeam and a longitudinal beam and enclosing the two, so that the device can ensure its structural strength while matching the rear floor structures of most vehicles on the market.

[0046] Preferably, the cross beam includes a middle cross beam 1 and a rear cross beam 2, and the longitudinal beam includes a left longitudinal beam 3 and a right longitudinal beam 4. The left longitudinal beam 3 and the right longitudinal beam 4 extend in the front-to-back direction respectively and are arranged in parallel and spaced apart from each other. The middle cross beam 1 and the rear cross beam 2 extend in the left-to-right direction and are connected between the left longitudinal beam 3 and the right longitudinal beam 4 in a front-to-back spaced apart manner.

[0047] The working principle is: by setting two cross beams and longitudinal beams, and using four cross beams and longitudinal beams to enclose the entire rear floor frame, the structural strength of the entire device is improved.

[0048] The above technical solution configures the cross beam and the longitudinal beam to be two mutually parallel skeleton beams, so that the device forms a hollow structure similar to a rectangle, so that it can better match the rear floor of the vehicle to better perform its function.

[0049] Preferably, the reinforcing rib assembly is arranged on the middle cross beam 1 , the rear cross beam 2 , the left longitudinal beam 3 and the right longitudinal beam 4 , and the mounting position is arranged on the left longitudinal beam 3 and the right longitudinal beam 4 .

[0050] The working principle is: by setting the installation points on the middle cross beam 1, the rear cross beam 2, the left longitudinal beam 3 and the right longitudinal beam 4, it is convenient to install the device on the vehicle body and also convenient to install the shock absorber on the device.

[0051] In order to match the positions of other vehicle connectors currently on the market, the above technical solution is provided with mounting points on the two longitudinal beams that match the vehicle body connectors, so that the entire device can be stably installed inside the vehicle body.

[0052] Preferably, a rear floor side beam 8 is further included, and the rear floor side beam 8 is connected and fixed to the rear floor beam of the vehicle body through a connecting piece.

[0053] The working principle is as follows: by providing the rear floor side beam 8 and utilizing the rear floor side beam 8 to connect and assemble with the vehicle body frame, the stability of the assembly of the entire device and the vehicle body frame is improved.

[0054] The above technical solution provides a rear floor side beam 8 so that it can fit the rear floor frame of the vehicle body and stably connect and fix the two through a connecting piece.

[0055] Preferably, the connecting member includes two rectangular connecting frames 17 with inner cavities, and the two rectangular connecting frames 17 are respectively assembled at the left and right ends of the rear floor side beam 8. The rectangular connecting frame 17 is provided with a cross reinforcing plate 29 in its inner cavity, and triangular connecting ribs 30 are provided on the left and right sides of the lower end of the rectangular connecting frame 17. The rear end of the rectangular connecting frame 17 is provided with an opening connected to the inner cavity, and the left and right ends and the upper end of the rectangular connecting frame 17 are provided with multiple mounting holes. Through holes corresponding to the mounting holes are opened inside the cross reinforcing plate 29, and the rear floor side beam 8 is connected and fixed to the rear floor beam of the vehicle body at the mounting holes by bolts.

[0056] The working principle is as follows: by setting a rectangular connecting frame 17, the rectangular connecting frame 17 is embedded in the vehicle body frame, and the cross reinforcement plate 29 is assembled inside the rectangular connecting frame 17, and the triangular connecting rib 30 is assembled at the lower end of the rectangular connecting frame 17, thereby improving the structural strength and connection stability of the rectangular connecting frame 17.

[0057] The above technical solution provides a rectangular connecting frame 17 with a cavity inside and a cross reinforcing plate 29 inside, so that it can reduce the material consumption while ensuring its own structural strength, thereby improving the stability of the assembly after the rear floor device is assembled inside the vehicle body using the connecting parts.

[0058] Preferably, the mounting position includes four frame mounting points 5, two shock absorber mounting points 6 and two spring disk mounting surfaces 7. The two shock absorber mounting points 6 are both bowl-shaped structures equipped with shock absorbers and are respectively arranged on the upper surfaces of the left longitudinal beam 3 and the right longitudinal beam 4. The spring disks of the shock absorbers are connected and fixed to the spring disk mounting surfaces 7. The two spring disk mounting surfaces 7 are respectively arranged on the lower surfaces of the left longitudinal beam 3 and the right longitudinal beam 4. The four frame mounting points 5 are grouped in pairs, and the two groups of frame mounting points 5 are respectively arranged on the lower surfaces of the left longitudinal beam 3 and the right longitudinal beam 4, and are distributed on the front and rear sides of the spring disk mounting surfaces 7. The left longitudinal beam 3 and the right longitudinal beam 4 are connected to the vehicle body at the frame mounting points 5 through mounting parts.

[0059] The working principle is: by setting a frame mounting point 5, and using a mounting part to connect and fix the frame mounting point 5 with the vehicle body, a shock absorber mounting point 6 and two spring disk mounting surfaces 7 are set, and the shock absorber mounting point 6 and the two spring disk mounting surfaces 7 are connected and fixed to the shock absorber, so that the device can stably assemble the shock absorber.

[0060] The above technical solution sets a frame mounting point 5, and the device is connected and fixed to the automobile body at the frame mounting point 5, and is set on both sides of the spring disk mounting surface 7, so that when the device is connected and assembled, it is connected and fixed to the main body of the vehicle body shock absorber and the spring disk of the vehicle body shock absorber through the spring disk mounting surface 7 and the shock absorber mounting point 6 respectively, so that the device can have a shock-absorbing effect during assembly.

[0061] Preferably, the mounting part includes a self-tapping bolt 19, which includes a bolt head and a bolt column. The bolt column is embedded in the frame mounting point 5, and an internal threaded hole extending along its length direction is opened inside the bolt column. The internal threaded hole is used for assembly and connection with the vehicle body.

[0062] The working principle is: by setting a self-tapping bolt 19, and using the self-tapping bolt 19 to assemble the device on the vehicle body at the frame mounting point 5, and using the fixing bolt to fix the device on the vehicle body at the internal threaded hole.

[0063] The above technical solution assembles the mounting parts on the mounting points and uses the mounting parts for connection and installation, so that when the device is installed at the frame mounting point 5, the connection performance between the device and the vehicle body has higher pulling force and breaking torque.

[0064] Preferably, three cutting holes 20 are provided at the bottom of the bolt column.

[0065] The working principle is: by setting three cutting holes 20 at the bottom of the bolt column, aluminum chips generated when the self-tapping bolt 19 is self-tapping can be discharged into it through the cutting holes 20, preventing aluminum chips from clogging and improving assembly efficiency.

[0066] The above technical solution can improve the cutting force of the self-tapping bolt 19 in the process of tapping the frame mounting point 5 by designing three cutting holes 20 at the bottom of the bolt column, and the aluminum chips generated during self-tapping can be discharged into the inner hole through the cutting holes 20, preventing the aluminum chips from clogging and causing tapping failure, thereby improving assembly efficiency.

[0067] Preferably, the reinforcing rib assembly includes a plurality of longitudinal reinforcing ribs 10, a plurality of human-shaped reinforcing ribs 11, a plurality of wavy groove ribs 14, a plurality of longitudinal ribs 21, a plurality of triangular ribs 22 and a plurality of raised ribs 23, a plurality of longitudinal reinforcing ribs 10 are arranged on the lower surface of the middle cross beam 1 along the length direction thereof, a hollow area 13 is provided inside the left longitudinal beam 3 and the right longitudinal beam 4, a plurality of human-shaped reinforcing ribs 11 are assembled in the hollow area 13, a plurality of wavy groove ribs 14 are assembled on the lower surface of the middle cross beam 1, a plurality of longitudinal ribs 21 are circumferentially spaced at the lower end edges of the two shock absorber mounting points 6 close to each other, a plurality of triangular ribs 22 are assembled at the connection between the left longitudinal beam 3, the right longitudinal beam 4 and the middle cross beam 1 and the rear cross beam 2, a plurality of raised ribs 23 extend along the front-to-back direction and are spaced at intervals on the lower surface of the middle cross beam 1.

[0068] The working principle is as follows: the longitudinal reinforcement ribs are assembled on the middle cross beam 1 to improve the structural strength of the middle cross beam 1; the human-shaped reinforcement ribs 11 are assembled on the hollow area 13 to improve the structural strength of the left longitudinal beam 3 and the right longitudinal beam 4; the wavy groove ribs 14 are assembled on the lower surface of the middle cross beam 1 to further improve the structural strength of the middle cross beam 1; the triangular ribs 22 are assembled at the connection between the left longitudinal beam 3, the right longitudinal beam 4 and the middle cross beam 1 and the rear cross beam 2 to improve the connection stability of the connection; a plurality of raised ribs 23 are assembled on the middle cross beam 1 to further improve the structural strength of the middle cross beam 1.

[0069] The above technical solution provides a plurality of reinforcing ribs and assembles the plurality of reinforcing ribs on the device, thereby improving the structural strength of the device and enabling the structural strength of the device to be improved during assembly.

[0070] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0071] 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 at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0072] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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 or an electrical connection; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0074] 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.

[0075] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A new energy vehicle aluminum alloy integrated die-casting rear floor structure, characterized in that: The invention comprises an integrally formed rear floor frame, wherein an opening (9) is provided inside the rear floor frame and passes through the rear floor frame from top to bottom, protrusions are provided on the left and right sides of the front end of the rear floor frame, and the protrusions are connected and fixed to the door sill beam of the vehicle body, and the left and right sides of the rear end of the rear floor frame are connected and fixed to the rear floor beam of the vehicle body, and reinforcing rib components and mounting positions are distributed on the rear floor frame, and the rear floor frame is connected to the vehicle body or the shock absorber at the mounting position.

2. The aluminum alloy integrated die-casting rear floor structure for new energy vehicles according to claim 1 is characterized in that: The rear floor frame comprises a cross beam and a longitudinal beam, and the cross beam and the longitudinal beam enclose the opening (9).

3. The aluminum alloy integrated die-casting rear floor structure for new energy vehicles according to claim 2 is characterized in that: The cross beam comprises a middle cross beam (1) and a rear cross beam (2), and the longitudinal beam comprises a left longitudinal beam (3) and a right longitudinal beam (4). The left longitudinal beam (3) and the right longitudinal beam (4) extend in the front-rear direction respectively and are arranged in parallel and spaced apart from each other. The middle cross beam (1) and the rear cross beam (2) extend in the left-rear direction and are connected between the left longitudinal beam (3) and the right longitudinal beam (4) in a front-rear spaced apart manner.

4. The aluminum alloy integrated die-casting rear floor structure for new energy vehicles according to claim 3 is characterized in that: The reinforcing rib assembly is arranged on the middle cross beam (1), the rear cross beam (2), the left longitudinal beam (3) and the right longitudinal beam (4), and the mounting position is arranged on the left longitudinal beam (3) and the right longitudinal beam (4).

5. The aluminum alloy integrated die-casting rear floor structure for new energy vehicles according to claim 1, characterized in that: It also comprises a rear floor side beam (8), wherein the rear floor side beam (8) is connected and fixed to the rear floor beam of the vehicle body via a connecting piece.

6. The aluminum alloy integrated die-casting rear floor structure for new energy vehicles according to claim 5, characterized in that: The connecting member comprises two rectangular connecting frames (17) provided with inner cavities, the two rectangular connecting frames (17) are respectively mounted on the left and right ends of the rear floor side beam (8), the rectangular connecting frame (17) is provided with a cross reinforcing plate (29) in its inner cavity, the left and right sides of the lower end of the rectangular connecting frame (17) are provided with triangular connecting ribs (30), the rear end of the rectangular connecting frame (17) is provided with an opening communicating with the inner cavity, the left and right ends and the upper end of the rectangular connecting frame (17) are provided with a plurality of mounting holes, the cross reinforcing plate (29) is provided with through holes corresponding to the mounting holes, and the rear floor side beam (8) is connected and fixed to the rear floor beam of the vehicle body at the mounting holes by bolts.

7. The aluminum alloy integrated die-casting rear floor structure for new energy vehicles according to claim 3 is characterized in that: The mounting position comprises four frame mounting points (5), two shock absorber mounting points (6) and two spring disk mounting surfaces (7). The two shock absorber mounting points (6) are both bowl-shaped structures equipped with shock absorbers and are respectively arranged on the upper surfaces of the left longitudinal beam (3) and the right longitudinal beam (4). The spring disks of the shock absorbers are connected and fixed to the spring disk mounting surfaces (7). The two spring disk mounting surfaces (7) are respectively arranged on the lower surfaces of the left longitudinal beam (3) and the right longitudinal beam (4). The four frame mounting points (5) are grouped in pairs, and two groups of frame mounting points (5) are respectively arranged on the lower surfaces of the left longitudinal beam (3) and the right longitudinal beam (4) and distributed on the front and rear sides of the spring disk mounting surfaces (7). The left longitudinal beam (3) and the right longitudinal beam (4) are connected to the vehicle body at the frame mounting points (5) through mounting parts.

8. The aluminum alloy integrated die-casting rear floor structure for new energy vehicles according to claim 7, characterized in that: The mounting part comprises a self-tapping bolt (19), the self-tapping bolt (19) comprises a bolt head and a bolt column, the bolt column is embedded in the frame mounting point (5), an internal threaded hole extending along its length direction is provided inside the bolt column, and the internal threaded hole is used for assembly and connection with the vehicle body.

9. The aluminum alloy integrated die-casting rear floor structure for new energy vehicles according to claim 8, characterized in that: The bottom of the bolt column is provided with three cutting holes (20).

10. The aluminum alloy integrated die-casting rear floor structure for new energy vehicles according to claim 7, characterized in that: The reinforcing rib assembly comprises a plurality of longitudinal reinforcing ribs (10), a plurality of human-shaped reinforcing ribs (11), a plurality of wavy groove ribs (14), a plurality of longitudinal ribs (21), a plurality of triangular ribs (22) and a plurality of raised ribs (23), wherein the plurality of longitudinal reinforcing ribs (10) are arranged on the lower surface of the middle cross beam (1) along the length direction thereof, and a hollow area (13) is arranged inside the left longitudinal beam (3) and the right longitudinal beam (4), and the plurality of human-shaped reinforcing ribs (11) are assembled in the hollow area (13). ), a plurality of the wavy grooved ribs (14) are mounted on the lower surface of the middle cross beam (1), a plurality of the longitudinal ribs (21) are mounted at intervals along the circumferential direction on the lower end edges of the two shock absorber mounting points (6) close to each other, a plurality of the triangular ribs (22) are mounted at the connection between the left longitudinal beam (3), the right longitudinal beam (4) and the middle cross beam (1), the rear cross beam (2), and a plurality of the raised ribs (23) extend in the front-rear direction and are arranged at intervals on the lower surface of the middle cross beam (1).

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