Connecting structure for rear floor assembly and rear wall assembly of automobile

Abstract

The utility model relates to the technical field of automobile manufacturing, and provides an automobile rear floor assembly and rear wall assembly connecting structure which comprises a rear wall assembly main body, a fixing frame and a top plate, the rear wall assembly main body is connected with the outer wall of the top end of the rear floor assembly main body in a welded mode through a connecting structure main body, and a cavity is formed in the inner wall of the connecting structure main body. A top plate is arranged on the side wall of the connecting structure body, mounting threaded holes are symmetrically formed in the outer wall of the top end of the rear floor assembly body, a fixing frame is movably mounted on the rear floor assembly body through the mounting threaded holes, and the fixing frame is movably mounted on the outer wall of the rear floor assembly body through threaded bolts and the mounting threaded holes. A connecting transverse plate is arranged at the bottom end of the rear floor assembly body, mounting holes are formed in the outer wall of the connecting transverse plate at equal intervals, connecting threaded holes are formed in the outer wall of the bottom end of the rear wall assembly body at equal intervals, and the problems that in the prior art, a connecting structure is not stable enough, and the anti-collision capacity is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, and in particular to a connection structure between an automobile rear floor assembly and a rear surround assembly. Background Art

[0002] The technical background of the connection structure between the rear floor assembly and the rear panel assembly in an automobile primarily relates to the strength, safety, and production efficiency of the vehicle body structure. This structure is typically achieved through welding, bolting, or bonding to ensure the overall rigidity and stability of the vehicle body. In modern automotive manufacturing, the design of the connection structure must balance crash safety with production line efficiency. The application of new materials (such as high-strength steel or aluminum alloys) and advanced manufacturing processes (such as laser welding or robotic automated welding) are continuously driving the development of this technology, aiming to improve vehicle safety and reduce production costs.

[0003] Patent specification CN 217945342 U discloses a connection structure between a rear floor assembly and a rear apron assembly. The structure features a central portion, with both sides of the central portion, located along the length of the vehicle body, curved toward the centerline of the rear floor assembly to form a recessed portion. The central portion also curves upward to form an arched shape. This new rear floor assembly exhibits high bending and torsional rigidity, significantly minimizing vehicle body deformation on bumpy roads and reducing the vibration sensitivity of the rear floor assembly, while also significantly improving NVH performance.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned connection structure between the rear floor assembly and the rear panel assembly of an automobile has the following problems: the assembly connection structure has poor structural integrity and is easily deformed in the event of a collision. Its arched structure is unevenly stressed in the event of a collision. Therefore, we propose a connection structure between the rear floor assembly and the rear panel assembly of an automobile. Utility Model Content

[0005] The utility model provides a connection structure between a rear floor assembly and a rear surround assembly of an automobile, which solves the problems in the related art that the connection structure is not stable enough and has poor anti-collision capability.

[0006] The technical solution of the utility model is as follows:

[0007] The top end of the rear floor assembly is provided with a fixing bracket, and the fixing bracket is movably mounted on the outer wall of the rear floor assembly body through the fixing bracket and the fixing bracket is movably mounted on the outer wall of the rear floor assembly body through the fixing bracket and the fixing bracket. The bottom end of the rear floor assembly body is provided with a connecting cross plate, and the outer wall of the connecting cross plate is provided with mounting holes at equal intervals. The outer wall of the bottom end of the rear floor assembly body is provided with connecting threaded holes at equal intervals, and the connecting threaded holes and the mounting holes are fixedly connected by fixing bolts. The outer wall of the top end of the rear floor assembly body is provided with an empty groove.

[0008] Preferably, the outer wall of the rear enclosure assembly body is an arc surface, and anti-collision beams are arranged at equal intervals on the inner wall of the rear enclosure assembly body.

[0009] Preferably, the inner wall of the connecting threaded hole is provided with an internal thread, and the internal thread matches the fixing bolt.

[0010] Preferably, the mounting hole is a through hole, and the mounting hole is connected to the connecting threaded hole one by one.

[0011] Preferably, circular holes are symmetrically provided on the outer wall of the fixing bracket, and the fixing bracket is docked with the mounting threaded hole through the circular holes.

[0012] Preferably, the inner wall of the mounting threaded hole is provided with an internal thread, and the threaded bolt and the mounting threaded hole match each other.

[0013] Preferably, the fixing frame is in an L-shaped structure, and the side walls of the fixing frame abut against the side walls of the top plate.

[0014] Preferably, a support plate is symmetrically provided on the outer wall of the top end of the rear enclosure assembly body, and the side wall of the support plate is in contact with the side wall of the rear enclosure assembly body.

[0015] The working principle and beneficial effects of the utility model are as follows:

[0016] 1. In the present invention, the rear panel assembly body and the rear floor assembly body are connected through the connecting structure body, and the cavity provided on the inner wall of the connecting structure body can make its structure stable while reducing its overall weight and reducing fuel consumption. At the same time, when the rear panel assembly body is hit, the clamping structure of the fixing frame and the threaded bolt can effectively enhance the integrated structure of the rear floor assembly body. The support plates provided on the outer walls of both sides of the rear floor assembly body contact the outer walls of the two ends of the rear panel assembly body. At the same time, the top plate connected to the side walls of the connecting structure body can evenly distribute the lateral force on the surface of the rear panel assembly body. The anti-collision beam is then used to reinforce the structural stability of the connecting structure body, which can effectively avoid damage to the connecting structure body during collision. This structure can strengthen the stability of the rear panel assembly body and the rear floor assembly body structure, improve the anti-collision ability, and avoid deformation caused by collision.

[0017] 2. In the present invention, the rear enclosure assembly body, the rear floor assembly body and the connecting transverse plate are arranged, and the connecting transverse plate arranged at the bottom of the rear enclosure assembly body and the connecting threaded holes arranged at the bottom of the rear enclosure assembly body are fixedly connected by bolts, which facilitates disassembly and assembly and can also strengthen the connectivity between the rear enclosure assembly body and the bottom of the rear floor assembly body, improve its stability, and avoid uneven force during upper and lower collisions. This structure improves the stability of the connection between the rear enclosure assembly body and the rear floor assembly body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] Figure 1 This is a schematic diagram of the main structure of the connection structure proposed by the utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of the rear floor assembly proposed in the present utility model;

[0021] Figure 3 This is a schematic diagram of the mounting threaded hole structure proposed by the utility model;

[0022] Figure 4 This is a schematic diagram of the mounting hole structure proposed by the utility model;

[0023] Figure 5 This is a schematic diagram of the cavity structure proposed by the utility model.

[0024] In the figure: 1. Rear panel assembly body; 2. Rear floor assembly body; 3. Fixing bracket; 4. Threaded bolt; 5. Top plate; 6. Connecting structure body; 7. Support plate; 8. Anti-collision beam; 9. Empty slot; 10. Cavity; 11. Connecting cross plate; 12. Fixing bolt; 13. Mounting threaded hole; 14. Connecting threaded hole; 15. Mounting hole. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example 1: Figures 1 to 5 As shown, this embodiment proposes a connection structure between a rear floor assembly and a rear enclosure assembly of an automobile, including a rear enclosure assembly main body 1, a fixing frame 3 and a top plate 5. The rear enclosure assembly main body 1 is welded to the outer wall of the top end of the rear floor assembly main body 2 through a connecting structure main body 6. The inner wall of the connecting structure main body 6 is provided with a cavity 10, and the side wall of the connecting structure main body 6 is provided with a top plate 5. The outer wall of the top end of the rear floor assembly main body 2 is symmetrically provided with mounting threaded holes 13. The rear floor assembly main body 2 is movably mounted with the fixing frame 3 through the mounting threaded holes 13. The fixing frame 3 is movably mounted on the outer wall of the rear floor assembly main body 2 through threaded bolts 4 and the mounting threaded holes 13. The bottom end of the rear floor assembly main body 2 is provided with a connecting cross plate 11. The outer wall of the connecting cross plate 11 is evenly spaced with mounting holes 15. The outer wall of the bottom end of the rear enclosure assembly main body 1 is evenly spaced with connecting threaded holes 14. The connecting threaded holes 14 and the mounting holes 15 are fixedly connected by fixing bolts 12. The outer wall of the top end of the rear enclosure assembly main body 1 is provided with an empty groove 9.

[0027] In this embodiment, circular holes are symmetrically provided on the outer wall of the fixing frame 3 , and the fixing frame 3 is connected to the mounting threaded hole 13 through the circular holes.

[0028] In this embodiment, the inner wall of the mounting threaded hole 13 is provided with an internal thread, and the threaded bolt 4 and the mounting threaded hole 13 match each other.

[0029] In this embodiment, the fixing frame 3 is in an L-shaped structure, and the side walls of the fixing frame 3 abut against the side walls of the top plate 5 .

[0030] In this embodiment, a support plate 7 is symmetrically provided on the outer wall of the top end of the rear enclosure assembly body 1 , and the side wall of the support plate 7 is in contact with the side wall of the rear enclosure assembly body 1 .

[0031] Specific examples Figure 1 、 Figure 3 and Figure 4As shown, when using this structure, the rear enclosure assembly body 1 and the rear floor assembly body 2 are connected by the connecting structure body 6. The cavity 10 set on the inner wall of the connecting structure body 6 can make its structure stable while reducing its overall weight and reducing fuel consumption. At the same time, when the rear enclosure assembly body 1 is hit, the clamping structure of the fixing frame 3 and the threaded bolt 4 can effectively enhance the integrated structure of the rear floor assembly body 2. The support plates 7 set on the outer walls on both sides of the rear floor assembly body 2 resist the outer walls at both ends of the rear enclosure assembly body 1. At the same time, the top plate 5 connected to the side walls of the connecting structure body 6 can make its lateral force evenly distributed on the surface of the rear enclosure assembly body 1. The anti-collision beam 8 is then used to reinforce the structural stability of the connecting structure body 6, which can effectively avoid damage to the connecting structure body 6 during collision. This structure can strengthen the structural stability of the rear enclosure assembly body 1 and the rear floor assembly body 2, improve the anti-collision ability, and avoid deformation caused by collision.

[0032] Embodiment 2: The outer wall of the rear panel assembly body 1 is an arc surface, and anti-collision beams 8 are arranged at equal intervals on the inner wall of the rear panel assembly body 1.

[0033] In this embodiment, an inner wall of the connecting threaded hole 14 is provided with an internal thread, and the internal thread matches the fixing bolt 12 .

[0034] In this embodiment, the mounting hole 15 is a through hole, and the mounting hole 15 is connected to the connecting threaded hole 14 in a one-to-one manner.

[0035] Specific examples Figure 1 、 Figure 2 and Figure 5 As shown, when using this structure, the connecting horizontal plate 11 set at the bottom of the rear enclosure assembly body 1 and the connecting threaded hole 14 set at the bottom of the rear enclosure assembly body 1 are fixedly connected by bolts, which is convenient for disassembly and assembly. At the same time, it can strengthen the connectivity between the bottom of the rear enclosure assembly body 1 and the rear floor assembly body 2, improve its stability, and avoid uneven force during upper and lower collisions. This structure improves the stability of the connection between the rear enclosure assembly body 1 and the rear floor assembly body 2.

[0036] Working principle: When in use, the rear enclosure assembly body 1 and the rear floor assembly body 2 are connected through the connecting structure body 6. The cavity 10 set on the inner wall of the connecting structure body 6 can make its structure stable while reducing its overall weight and reducing fuel consumption. At the same time, when the rear enclosure assembly body 1 is hit, the clamping structure of the fixing frame 3 and the threaded bolt 4 can effectively enhance the integrated structure of the rear floor assembly body 2. The support plates 7 set on the outer walls on both sides of the rear floor assembly body 2 contact the outer walls at both ends of the rear enclosure assembly body 1. At the same time, the top plate 5 connected to the side wall of the connecting structure body 6 can evenly distribute the lateral force on the surface of the rear enclosure assembly body 1, and then the anti-collision beam 8 is used to reinforce the connecting structure body 6 The stability of the structure can effectively avoid damage to the connecting structure main body 6 during collision, and at the same time reduce the deformation of the rear panel assembly main body 1 and the rear floor assembly main body 2 during collision. The connecting cross plate 11 provided at the bottom of the rear panel assembly main body 1 and the connecting threaded hole 14 provided at the bottom of the rear panel assembly main body 1 are fixedly connected by bolts, which is convenient for disassembly and assembly. At the same time, it can strengthen the connectivity of the bottom of the rear panel assembly main body 1 and the rear floor assembly main body 2, improve its stability, and avoid uneven force during upper and lower collisions. This connecting structure can make the rear panel assembly main body 1 and the rear floor assembly main body 2 evenly stressed, reduce the deformation caused by collision, and at the same time improve the stability of the connection between the rear panel assembly main body 1 and the rear floor assembly main body 2.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A connection structure between a rear floor assembly and a rear panel assembly of an automobile, comprising a rear panel assembly body (1), a fixing frame (3) and a top plate (5), characterized in that: The rear enclosure assembly body (1) is welded to the outer wall of the top end of the rear floor assembly body (2) through a connecting structure body (6); the inner wall of the connecting structure body (6) is provided with a cavity (10); the side wall of the connecting structure body (6) is provided with a top plate (5); the outer wall of the top end of the rear floor assembly body (2) is symmetrically provided with mounting threaded holes (13); the rear floor assembly body (2) is movably provided with a fixing frame (3) through the mounting threaded holes (13); the fixing frame (3) is fixed by a threaded bolt (4) The rear floor assembly body (2) is movably mounted with a mounting threaded hole (13), a connecting transverse plate (11) is provided at the bottom end of the rear floor assembly body (2), and mounting holes (15) are provided on the outer wall of the connecting transverse plate (11) at equal intervals. The outer wall of the bottom end of the rear enclosure assembly body (1) is provided with connecting threaded holes (14) at equal intervals, and the connecting threaded holes (14) and the mounting holes (15) are fixedly connected by fixing bolts (12). The outer wall of the top end of the rear enclosure assembly body (1) is provided with an empty slot (9).

2. The connection structure between the rear floor assembly and the rear panel assembly of an automobile according to claim 1, characterized in that: The outer wall of the rear enclosure assembly body (1) is an arc surface, and anti-collision beams (8) are arranged at equal intervals on the inner wall of the rear enclosure assembly body (1).

3. The connection structure between the rear floor assembly and the rear panel assembly of an automobile according to claim 2, characterized in that: The inner wall of the connecting threaded hole (14) is provided with an internal thread, and the internal thread matches the fixing bolt (12).

4. The connection structure between the rear floor assembly and the rear panel assembly of an automobile according to claim 2, characterized in that: The mounting hole (15) is a through hole, and the mounting hole (15) is connected to the connecting threaded hole (14) in a one-to-one manner.

5. The connection structure between the rear floor assembly and the rear panel assembly of an automobile according to claim 3, characterized in that: The outer wall of the fixing frame (3) is symmetrically provided with circular holes, and the fixing frame (3) is butted against the mounting threaded hole (13) through the circular holes.

6. The connection structure between the rear floor assembly and the rear panel assembly of an automobile according to claim 5, characterized in that: The inner wall of the mounting threaded hole (13) is provided with an internal thread, and the threaded bolt (4) and the mounting threaded hole (13) match each other.

7. The connection structure between the rear floor assembly and the rear panel assembly of an automobile according to claim 6, characterized in that: The fixing frame (3) has an L-shaped structure, and the side wall of the fixing frame (3) abuts against the side wall of the top plate (5).

8. The automobile rear floor assembly and rear panel assembly connection structure according to claim 5, characterized in that: A support plate (7) is symmetrically provided on the outer wall of the top end of the rear enclosure assembly body (1), and the side wall of the support plate (7) is in contact with the side wall of the rear enclosure assembly body (1).

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