Rear floor framework assembly

Abstract

The utility model discloses a rear floor framework assembly which comprises rear floor boundary beams, a rear floor front cross beam, a rear floor middle cross beam and a rear floor rear cross beam, and the rear floor front cross beam, the rear floor middle cross beam and the rear floor rear cross beam are all arranged between two sections of rear floor boundary beams. The rear floor middle cross beam is provided with a first connecting part extending downwards, a second connecting part is arranged between the first connecting part and the rear floor rear cross beam, a notch is formed by the first connecting part and the second connecting part, and the installation position of the rear floor rear cross beam is lower than that of the rear floor middle cross beam. The joint of the rear floor rear cross beam and the automobile body is lower than that of the rear floor middle cross beam and the automobile body, so that the rear floor framework assembly can be used for installing the automobile body in a specific shape, and the design requirement of the automobile is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile components, and in particular relates to a rear floor frame assembly. Background Art

[0002] With the continuous development of the automobile industry, safety, energy conservation, environmental protection and intelligence have become the themes of the development of the world's automobile industry. Lightweighting of automobiles is an inevitable trend of future development, that is, while reducing the weight of the car body, the safety of the car body must be ensured.

[0003] The rear floor of a car is an important structural component of the body frame. The traditional rear floor frame of a car is welded by a left rear floor side beam, a right rear floor side beam, two or more rear floor cross beams and corresponding cross beam connectors. There is a structural discontinuity problem at the connection, which is easy to produce stress concentration and local deformation during the collision, affecting the collision safety performance. In addition, there are many parts, the overlap relationship is complex, the welding matching is difficult and the welding deformation is serious, which affects the body size accuracy. In response to this technical problem, the prior art discloses a utility model patent named rear floor frame assembly and automobile (authorization announcement number: CN 219948367U), which has ultra-high strength, reduces the number of parts and reduces the weight of the body, while improving the body strength.

[0004] The rear floor frame assembly of the prior art includes a left rear floor side beam, a right rear floor side beam, a rear floor front cross beam, a rear floor middle cross beam, a rear floor rear cross beam and a rear floor longitudinal beam. The rear floor front cross beam, the rear floor middle cross beam and the rear floor rear cross beam are sequentially distributed along the front-to-rear direction of the vehicle body.

[0005] When the rear floor frame assembly is connected and fixed to the vehicle body, the connection between the rear floor rear cross beam and the vehicle body is lower than the connection between the rear floor middle cross beam and the vehicle body, the installation position of the rear floor rear cross beam needs to be lower than the installation position of the rear floor middle cross beam to meet the installation requirements of the rear floor frame assembly and the vehicle body. Therefore, how to make the installation position of the rear floor rear cross beam lower than the installation position of the rear floor middle cross beam is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0006] The utility model aims to solve the above-mentioned technical problems existing in the prior art and to provide a rear floor frame assembly so that the installation position of the rear cross beam of the rear floor is lower than the installation position of the middle cross beam of the rear floor, thereby ensuring that the connection position of the rear cross beam of the rear floor and the vehicle body is lower than the connection position of the middle cross beam of the rear floor and the vehicle body, so that the rear floor frame assembly can be used for vehicle body installation of a specific shape to meet the design requirements of the vehicle.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The rear floor frame assembly includes a rear floor side beam, a rear floor front cross beam, a rear floor middle cross beam and a rear floor rear cross beam. The rear floor front cross beam, the rear floor middle cross beam and the rear floor rear cross beam are all arranged between two sections of the rear floor side beams. The characteristic is that the rear floor middle cross beam is provided with a connecting portion 1 extending downward, a connecting portion 2 is provided between the connecting portion 1 and the rear floor rear cross beam, a notch is formed between the connecting portion 1 and the connecting portion 2, and the installation position of the rear floor rear cross beam is lower than the installation position of the rear floor middle cross beam.

[0009] Furthermore, a stiffening rib 1 is fixed between the connection part 1 and the connection part 2 to increase the connection strength between the connection part 1 and the connection part 2, so that the connection part 1 and the connection part 2 are not easily deformed.

[0010] Furthermore, a protrusion is provided between the cross beam and the first connecting portion of the rear floor, so that it is convenient to apply force to the protrusion and to facilitate the molding and manufacturing of the rear floor frame assembly.

[0011] Furthermore, the rear floor side beam is provided with a side portion, and the side portion is provided with a mounting hole 1, which can change the connection position of the rear floor side beam and the vehicle body, so as to meet the requirements of fixing the rear floor side beam and the vehicle body of a specific shape.

[0012] Furthermore, a second stiffening rib is fixed between the side portion and the rear floor side beam to increase the connection strength between the side portion and the rear floor side beam, so that the side portion and the rear floor side beam are not easily deformed.

[0013] Furthermore, the side portion is recessed in the direction of the cross beam in the rear floor to form a groove, which facilitates the application of force to the groove and can move the entire rear floor frame assembly.

[0014] Furthermore, a vertical threaded hole 1 is provided on the middle cross beam of the rear floor, and the threaded hole 1 is fixed to the body by screws to fix the middle cross beam of the rear floor to the body. A boss is provided on the rear cross beam of the rear floor, and the boss is provided with a vertical threaded hole 2, and the threaded hole 2 is fixed to the body by screws to fix the rear cross beam of the rear floor to the body.

[0015] Furthermore, three stiffening ribs are fixed to the bottom surfaces of the front cross beam of the rear floor, the middle cross beam of the rear floor and the rear cross beam of the rear floor, which increase the self-strength of the front cross beam of the rear floor, the middle cross beam of the rear floor and the rear cross beam of the rear floor, avoid deformation of the rear floor frame assembly, and facilitate and quickly fix the rear floor frame assembly and the vehicle body.

[0016] Furthermore, a notch is provided at the connection between the rear cross beam of the rear floor and the side beam of the rear floor, a connecting column is provided in the notch, the connecting column is provided with three horizontal threaded holes, the threaded holes three are fixed to the vehicle body by screws, the rear cross beam of the rear floor is provided with three connecting parts extending downward, the connecting part three is provided with two mounting holes, so as to increase the firmness of the connection between the rear floor frame assembly and the vehicle body.

[0017] Furthermore, a connection portion 4 is extended downward from the front cross beam of the rear floor, and a mounting hole 3 is provided on the connection portion 4, so that the front cross beam of the rear floor can be positioned on the vehicle body.

[0018] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0019] The utility model uses stamping to make the connection part 1 of the rear floor middle cross beam extend downward, and the connection part 1 is connected to the rear cross beam of the rear floor through the connection part 2. At this time, the installation position of the rear cross beam of the rear floor is lower than the installation position of the rear floor middle cross beam, which ensures that the connection position of the rear cross beam of the rear floor and the vehicle body is lower than the connection position of the rear floor middle cross beam and the vehicle body, so that the rear floor frame assembly can be used for vehicle body installation with a specific shape, meeting the design requirements of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of the rear floor frame assembly of the utility model;

[0022] Figure 2 It is a top view of the rear floor frame assembly of the utility model;

[0023] Figure 3 It is a bottom view of the rear floor frame assembly of the utility model;

[0024] Figure 4 for Figure 2 The structural diagram of the middle A direction;

[0025] Figure 5 for Figure 2 Schematic diagram of the structure in the B direction.

[0026] In the figure, 1-rear floor side beam; 2-rear floor front cross beam; 3-rear floor middle cross beam; 4-rear floor rear cross beam; 5-connection part one; 6-connection part two; 7-stiffening rib one; 8-raised part; 9-side; 10-stiffening rib two; 11-mounting hole one; 12-groove; 13-threaded hole one; 14-threaded hole two; 15-boss; 16-notch; 17-connecting column; 18-threaded hole three; 19-connection part four; 20-mounting hole three; 21-stiffening rib three; 22-connection part three; 23-mounting hole two; 24-connection part five; 25-mounting hole four. DETAILED DESCRIPTION

[0027] like Figures 1 to 5As shown, the rear floor frame assembly of the utility model includes a rear floor side beam 1, a rear floor front cross beam 2, a rear floor middle cross beam 3 and a rear floor rear cross beam 4. The rear floor front cross beam 2, the rear floor middle cross beam 3 and the rear floor rear cross beam 4 are all arranged between two sections of the rear floor side beams 1, and the rear floor front cross beam 2, the rear floor middle cross beam 3 and the rear floor rear cross beam 4 are distributed in sequence along the front and rear direction of the vehicle body.

[0028] The front cross beam 2 of the rear floor extends downward to have a connection part 4 19 and a connection part 5 24, the connection part 4 19 is provided with a mounting hole 3 20, and the connection part 5 24 is provided with a mounting hole 4 25. The rear cross beam 4 of the rear floor is provided with a connection part 3 22 extending downward, and the connection part 3 22 is provided with a mounting hole 23. The positioning column of the vehicle body passes through the above-mentioned mounting holes, and the front cross beam 2 of the rear floor and the rear cross beam 4 of the rear floor can be positioned on the vehicle body, thereby increasing the firmness of the connection between the rear floor frame assembly and the vehicle body.

[0029] The rear floor middle cross beam 3 is provided with a vertical threaded hole 13, and the threaded hole 13 is fixed to the body by screws to achieve the fixation of the rear floor middle cross beam 3 and the body. The rear floor rear cross beam 4 is provided with a boss 15, and the boss 15 is provided with a vertical threaded hole 2 14, and the threaded hole 2 14 is fixed to the body by screws to achieve the fixation of the rear floor rear cross beam 4 and the body.

[0030] A notch 16 is provided at the connection between the rear floor rear cross beam 4 and the rear floor side beam 1, a connecting column 17 is provided in the notch 16, and the connecting column 17 is provided with a horizontal threaded hole 3 18, and the threaded hole 3 18 is fixed to the vehicle body by screws.

[0031] The bottom surface of the rear floor front cross beam 2, the bottom surface of the rear floor middle cross beam 3 and the bottom surface of the rear floor rear cross beam 4 are all fixed with stiffening ribs 3 21, which increase the strength of the rear floor front cross beam 2, the rear floor middle cross beam 3 and the rear floor rear cross beam 4, avoid deformation of the rear floor frame assembly, and facilitate and quickly fix the rear floor frame assembly to the vehicle body. The stiffening ribs 3 21 on the rear floor front cross beam 2 and the rear floor middle cross beam 3 are connected end to end and are distributed in a triangle; the stiffening ribs 3 21 on the rear floor rear cross beam 4 are distributed horizontally and vertically in a crosswise manner.

[0032] The rear floor middle cross beam 3 is formed by stamping with a connection part 1 5 and a connection part 2 6. The connection part 1 5 extends downward, and the connection part 2 6 is arranged between the connection part 1 5 and the rear floor rear cross beam 4. The connection part 1 5 and the connection part 2 6 are formed with a notch. A stiffening rib 1 7 is fixed between the connection part 1 5 and the connection part 2 6. The stiffening rib 1 7 is arranged in the notch to increase the connection strength between the connection part 1 5 and the connection part 2 6, so that the connection part 1 5 and the connection part 2 6 are not easily deformed. The installation position of the rear floor rear cross beam 4 is lower than the installation position of the rear floor middle cross beam 3, ensuring that the connection between the rear floor rear cross beam 4 and the vehicle body is lower than the connection between the rear floor middle cross beam 3 and the vehicle body, so that the rear floor frame assembly can be used for vehicle body installation of a specific shape to meet the design requirements of the car. A protrusion 8 is provided between the rear floor middle cross beam 3 and the connection part 1 5, which is convenient for applying a force to the protrusion 8 and facilitating the molding and manufacturing of the rear floor frame assembly.

[0033] The entire outer side of the rear floor side beam 1 is provided with a side portion 9, and the side portion 9 is provided with a mounting hole 11. The positioning column of the vehicle body passes through the mounting hole 11, which can change the connection position between the rear floor side beam 1 and the vehicle body, and meet the needs of fixing the rear floor side beam 1 and a vehicle body of a specific shape. A plurality of stiffening ribs 10 are fixed between the side portion 9 and the rear floor side beam 1 to increase the connection strength between the side portion 9 and the rear floor side beam 1, so that the side portion 9 and the rear floor side beam 1 are not easily deformed. The side portion 9 is recessed toward the rear floor middle cross beam 3, forming a groove 12, which is convenient for applying force to the groove 12, and can move the entire rear floor frame assembly.

[0034] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. A rear floor frame assembly, comprising a rear floor side beam, a rear floor front cross beam, a rear floor middle cross beam and a rear floor rear cross beam, wherein the rear floor front cross beam, the rear floor middle cross beam and the rear floor rear cross beam are all arranged between two sections of the rear floor side beams; characterized in that: The rear floor middle cross beam is provided with a connection part 1 extending downward, a connection part 2 is provided between the connection part 1 and the rear cross beam of the rear floor, a groove is formed between the connection part 1 and the connection part 2, and the installation position of the rear cross beam of the rear floor is lower than the installation position of the rear floor middle cross beam.

2. The rear floor frame assembly according to claim 1, characterized in that: A stiffening rib 1 is fixed between the connecting portion 1 and the connecting portion 2.

3. The rear floor frame assembly according to claim 1, characterized in that: A raised portion is provided between the cross beam in the rear floor and the first connecting portion.

4. The rear floor frame assembly according to claim 1, characterized in that: The rear floor side beam is provided with a side portion, and the side portion is provided with a mounting hole 1.

5. The rear floor frame assembly according to claim 4, characterized in that: A second stiffening rib is fixed between the side portion and the rear floor edge beam.

6. The rear floor frame assembly according to claim 4, characterized in that: The side portion is recessed toward the cross beam in the rear floor to form a groove.

7. The rear floor frame assembly according to claim 1, characterized in that: The cross beam in the rear floor is provided with a vertical threaded hole 1, and the threaded hole 1 is fixed to the vehicle body by screws. The rear cross beam of the rear floor is provided with a boss, and the boss is provided with a vertical threaded hole 2, and the threaded hole 2 is fixed to the vehicle body by screws.

8. The rear floor frame assembly according to claim 1, characterized in that: The bottom surface of the front cross beam of the rear floor, the bottom surface of the middle cross beam of the rear floor and the bottom surface of the rear cross beam of the rear floor are all fixed with stiffening ribs three.

9. The rear floor frame assembly according to claim 1, characterized in that: A notch is provided at the connection between the rear cross beam of the rear floor and the side beam of the rear floor, a connecting column is provided in the notch, the connecting column is provided with three horizontal threaded holes, the three threaded holes are fixed to the vehicle body by screws, the rear cross beam of the rear floor is provided with three connecting parts extending downward, and the three connecting parts are provided with two mounting holes.

10. The rear floor frame assembly according to claim 1, characterized in that: The front cross beam of the rear floor extends downwardly with a connecting portion four, and the connecting portion four is provided with a mounting hole three.

Images