Reinforcing structure of electric vehicle frame

Abstract

The utility model discloses a reinforcing structure of an electric vehicle frame, which belongs to the technical field of electric vehicles and is characterized by comprising a main beam tube, a front beam tube, two first side tubes, two second side tubes, a connecting plate and two reinforcing tubes arranged oppositely. A first connecting hole and a second connecting hole are formed in the main beam pipe, the front end heads of the two first side pipes are inserted into the first connecting hole and fixedly connected with the main beam pipe, the front end heads of the two second side pipes are inserted into the second connecting hole and fixedly connected with the main beam pipe, and the rear ends of the two first side pipes are connected with the rear ends of the two second side pipes respectively. The connecting plate fixedly covers the outer side wall of the main beam pipe and is fixedly connected with the first side pipe and the second side pipe, the two ends of the two reinforcing pipes are fixedly connected with the main beam pipe and the front end of the second side pipe respectively, and the two reinforcing pipes are fixedly connected with the front end of the first side pipe. The structure can strengthen the connection strength between the first side pipe and the main beam pipe and between the second side pipe and the main beam pipe.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric vehicles, and particularly relates to a reinforcing structure of an electric vehicle frame. Background Art

[0002] Electric vehicles have won the favor of the majority of consumers due to their light, fast characteristics, easy-to-learn control methods, and excellent environmental protection performance. In the structure of an electric vehicle, the frame, as the supporting structure of the entire vehicle, the rationality of its design directly relates to the overall performance of the vehicle body and the comfortable experience of the rider.

[0003] The electric vehicle frame generally includes an upper tube and a lower tube, and the upper tube and the lower tube are welded together in a tangential direction. Therefore, the shear resistance of the upper and lower parts of the electric vehicle frame is weak. At the same time, since the upper tube is an oval tube, a sheet metal part needs to be welded at the upper end of the oval tube, which makes the frame heavier and the damping effect is not good.

[0004] Chinese Patent No. CN221775957U discloses an electric vehicle frame convenient for assembly, including a seat bucket frame, a first side tube, and a head support device. The head support device is welded to the front end face of the seat bucket frame. The first side tube has at least two and is symmetrically arranged along the side wall surface of the seat bucket frame, and the front end extension of the first side tube is connected to the head support device. Second side tubes are arranged between the first side tubes on both sides of the seat bucket frame and the head support device. An installation plate is arranged on the tube wall of the second side tube close to the head support device, and a support plate is arranged on the tube wall of the second side tube far from the head support device, and a plurality of threaded holes convenient for screwing are also opened on the support plate. A seat bucket bracket is also arranged at the upper end of the seat bucket frame close to the support plate. First connecting plates are arranged on the outer walls of the two first side tubes close to the seat bucket bracket, and an assembly plate convenient for assembly is arranged between the outer walls of the two first side tubes close to the first connecting plate.

[0005] The above technical solution has the following defects: The front end extension of the first side tube of the electric vehicle frame is directly welded to the main beam tube, and one end of the second side tube is directly welded to the main beam tube, resulting in stress concentration at the welding part, and fatigue cracks are likely to appear at the welding part, which in turn affects the overall strength and safety of the frame. Summary of the Utility Model

[0006] The purpose of the utility model is to propose a reinforcing structure of an electric vehicle frame for the above problems existing in the prior art. The technical problem to be solved by the utility model is: how to strengthen the connection strength between the first side tube and the second side tube and the main beam tube.

[0007] The above technical object of the present utility model can be achieved through the following technical solutions: A reinforcing structure for an electric vehicle frame, including a main beam tube, a front beam tube, two first side tubes, two second side tubes, a connecting plate, and two reinforcing tubes. The main beam tube is fixedly connected to the front beam tube. A first connecting hole and a second connecting hole are formed on the main beam tube. The front end heads of the two first side tubes are respectively inserted into the first connecting hole and fixedly connected to the main beam tube. The front end heads of the two second side tubes are respectively inserted into the second connecting hole and fixedly connected to the main beam tube. The rear ends of the two first side tubes are respectively connected to the rear ends of the two second side tubes. The connecting plate is fixedly covered on the outer side wall of the main beam tube, and the connecting plate is fixedly connected to the front ends of the first side tube and the second side tube. The two reinforcing tubes are arranged oppositely, and the two ends of the two reinforcing tubes are respectively fixedly connected to the main beam tube and the front ends of the second side tubes, and the two reinforcing tubes are fixedly connected to the front ends of the first side tubes.

[0008] In the above-mentioned reinforcing structure for an electric vehicle frame, the two ends of the two reinforcing tubes respectively have a flat extension section one and an extension section two. The outer side wall of the extension section one is attached to the outer side wall of the main beam tube. The outer side wall of the extension section two is attached to the outer side walls of the first side tube and the second side tube.

[0009] In the above-mentioned reinforcing structure for an electric vehicle frame, two grooves are provided on the connecting plate. The front ends of the two first side tubes are respectively located in the two grooves, and the first side tube is adapted to the groove.

[0010] In the above-mentioned reinforcing structure for an electric vehicle frame, a first flanging is formed by bending the lower end of the connecting plate. The first flanging is attached to the outer side walls of the two second side tubes and the outer side wall of the main beam tube.

[0011] In the above-mentioned reinforcing structure for an electric vehicle frame, the two reinforcing tubes, the main beam tube, and the two first side tubes cooperate to form two first triangular structures. The two reinforcing tubes, the main beam tube, and the two second side tubes cooperate to form two second triangular structures. The two first triangular structures and the two second triangular structures are both right-angled triangles.

[0012] In the above-mentioned reinforcing structure for an electric vehicle frame, a plurality of support plates are arranged between the first side tube and the second side tube. The two ends of the plurality of support plates are respectively bent to form a second flanging and a third flanging. The second flanging is attached to the outer side wall of the first side tube. The third flanging is attached to the outer side wall of the second side tube.

[0013] In the above-mentioned strengthening structure of an electric vehicle frame, reinforcing rings are integrally provided at both ends of the front beam tube, a reinforcing seat is provided between the main beam tube and the front beam tube, and the outer side wall of the reinforcing seat is fitted with the outer side wall of the reinforcing ring.

[0014] In the above-mentioned strengthening structure of an electric vehicle frame, a rear vehicle frame is provided at the rear ends of the two second side tubes.

[0015] In the above-mentioned strengthening structure of an electric vehicle frame, protrusions are integrally provided on both sides of several of the support plates, and the protrusions are arranged along the length direction of the support plates.

[0016] In summary, the beneficial effects of the present utility model compared with the prior art are as follows:

[0017] By covering and fixing the connecting plate on the outer side wall of the main beam tube, and the connecting plate is fixedly connected to the front ends of the first side tube and the second side tube, both ends of the two reinforcing tubes are fixedly connected to the main beam tube and the front ends of the second side tube respectively, and the two reinforcing tubes are fixedly connected to the front ends of the first side tube, so as to strengthen the connection strength between the first side tube and the second side tube and the main beam tube, enabling the connection structure to disperse the load more evenly and stably when stressed, making the overall structure more firm and reliable and having better safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the embodiment;

[0019] Figure 2 is a front view of the embodiment;

[0020] Figure 3 is a schematic structural diagram of the connecting plate of the embodiment;

[0021] Figure 4 is a partial schematic structural diagram of the embodiment;

[0022] Figure 5 is a schematic structural diagram of the support plate of the embodiment.

[0023] Reference numerals: 1, main beam tube; 2, front beam tube; 3, first side tube; 4, second side tube; 5, connecting plate; 6, reinforcing tube; 7, first connecting hole; 8, second connecting hole; 9, first extension section; 10, second extension section; 11, groove; 12, first flanging; 13, first triangular structure; 14, second triangular structure; 15, support plate; 16, second flanging; 17, third flanging; 18, reinforcing ring; 19, reinforcing seat; 20, rear vehicle frame; 21, protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following are specific embodiments of the present utility model, in combination with the accompanying drawings, to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

[0025] Embodiment 1:

[0026] A reinforcing structure for an electric vehicle frame, as Figures 1 to 4 shown, includes a main beam tube 1, a front beam tube 2, two first side tubes 3, two second side tubes 4, a connecting plate 5, and two reinforcing tubes 6.

[0027] The main beam tube 1 is fixedly connected to the front beam tube 2. Reinforcing rings 18 are integrally provided at both ends of the front beam tube 2. The reinforcing rings 18 can effectively avoid the risk of cracking of the front beam tube 2, and the front beam tube 2 has higher strength and is more durable.

[0028] A reinforcing seat 19 is provided between the main beam tube 1 and the front beam tube 2. The outer side wall of the reinforcing seat 19 is in contact with the outer side wall of the reinforcing ring 18. Through the reinforcing seat 19, the connection strength between the main beam tube 1 and the front beam tube 2 can be effectively improved, and the structural stability can be enhanced. Moreover, since the outer side wall of the reinforcing seat 19 is in contact with the outer side wall of the reinforcing ring 18, the stability and durability of the connection during long-term use can be improved.

[0029] A first connection hole 7 and a second connection hole 8 are provided on the main beam tube 1. The front ends of the two first side tubes 3 are inserted into the first connection hole 7 and fixedly connected to the main beam tube 1. The front ends of the two second side tubes 4 are inserted into the second connection hole 8 and fixedly connected to the main beam tube 1.

[0030] The rear ends of the two first side tubes 3 are respectively connected to the rear ends of the two second side tubes 4. A rear vehicle frame 20 is provided at the rear ends of the two second side tubes 4.

[0031] The connecting plate 5 is fixedly covered on the outer side wall of the main beam tube 1, and the connecting plate 5 is fixedly connected to the front ends of the first side tube 3 and the second side tube 4. It should be noted that fixedly covering the connecting plate 5 on the outer side wall of the main beam tube 1 can effectively enhance the structural strength and supporting force of the main beam tube 1, and fixedly connecting the connecting plate 5 to the first side tube 3 and the second side tube 4 can improve the connection strength between the first side tube 3 and the second side tube 4 and the main beam tube 1, ensuring the stability of the overall structure.

[0032] Two grooves 11 are provided on the connecting plate 5. The front ends of the two first side tubes 3 are respectively located in the two grooves 11, and the first side tube 3 is adapted to the groove 11, thereby ensuring the stable position of the first side tube 3 on the connecting plate 5 and increasing the firmness of the connection.

[0033] The lower end of the connecting plate 5 is bent to form a flange 12, which fits with the outer side walls of the two second side tubes 4 and the outer side wall of the main beam tube 1, thereby increasing the contact area between the connecting plate 5 and the main beam tube 1 and the two second side tubes 4, effectively improving the connection strength and stability between the connecting plate 5 and the main beam tube 1 and between the connecting plate 5 and the two second side tubes 4, making the overall structure more stable.

[0034] The two reinforcing tubes 6 are arranged opposite to each other, and the two ends of the two reinforcing tubes 6 are respectively fixedly connected to the front end of the main beam tube 1 and the second side tube 4, and the two reinforcing tubes 6 are fixedly connected to the front end of the first side tube 3, so as to strengthen the connection strength between the first side tube 3 and the second side tube 4 and the main beam tube 1, so that the connection structure can disperse the load more evenly and stably when subjected to force, and the overall structure is more stable and reliable, and the safety is better.

[0035] The two ends of the two reinforcing tubes 6 respectively have a flat extension section 1 9 and an extension section 2 10. The outer wall of the extension section 1 9 fits with the outer wall of the main beam tube 1, thereby increasing the contact area between the reinforcing tube 6 and the main beam tube 1, and effectively improving the connection strength and stability between the two. The outer wall of the extension section 2 10 fits with the outer wall of the first side tube 3 and the outer wall of the second side tube 4, thereby increasing the contact area between the reinforcing tube 6 and the first side tube 3, effectively improving the connection strength and stability between the two, and making the overall structure more stable.

[0036] The two reinforcing tubes 6, the main beam tube 1 and the two first side tubes 3 cooperate to form two triangular structures 13, and the two reinforcing tubes 6, the main beam tube 1 and the two second side tubes 4 cooperate to form two triangular structures 2 14. The two triangular structures 1 13 and the two triangular structures 2 14 are both right triangles. The stability of the right triangle structure ensures the structure's ability to resist deformation during long-term use, thereby improving the stability and reliability of the overall structure.

[0037] A plurality of support plates 15 are arranged between the first side tube 3 and the second side tube 4. Both ends of the plurality of support plates 15 are bent to form a second flange 16 and a third flange 17. The second flange 16 fits with the outer wall of the first side tube 3, and the third flange 17 fits with the outer wall of the second side tube 4, thereby improving the connection strength and stability between the first side tube 3, the second side tube 4 and the support plates 15, and making the overall structure more stable.

[0038] Embodiment 2:

[0039] The difference between the second embodiment and the first embodiment is that Figure 5 As shown, protrusions 21 are integrally provided on both sides of the plurality of support plates 15 , and the protrusions 21 are provided along the length direction of the support plates 15 , so as to improve the structural strength of the support plates 15 and prevent the support plates 15 from breaking.

[0040] The specific embodiments described herein are merely illustrative of the spirit of the present utility model; those skilled in the technical field to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A reinforcing structure for an electric vehicle frame, characterized in that: It includes a main beam tube (1), a front beam tube (2), two first side tubes (3), two second side tubes (4), a connecting plate (5) and two reinforcing tubes (6). The main beam tube (1) is fixedly connected to the front beam tube (2). A first connecting hole (7) and a second connecting hole (8) are formed on the main beam tube (1). The front end heads of the two first side tubes (3) are inserted into the first connecting hole (7) and fixedly connected to the main beam tube (1). The front end heads of the two second side tubes (4) are inserted into the second connecting hole (8) and fixedly connected to the main beam tube (1). The rear ends of the two first side tubes (3) are respectively connected to the rear ends of the two second side tubes (4). The connecting plate (5) is fixedly covered on the outer side wall of the main beam tube (1), and the connecting plate (5) is fixedly connected to the front ends of the first side tube (3) and the second side tube (4). The two reinforcing tubes (6) are arranged oppositely. The two ends of the two reinforcing tubes (6) are respectively fixedly connected to the main beam tube (1) and the front ends of the second side tubes (4), and the two reinforcing tubes (6) are fixedly connected to the front ends of the first side tubes (3).

2. The reinforcing structure of an electric vehicle frame according to claim 1, characterized in that: The two ends of the two reinforcing tubes (6) respectively have a flat extension section one (9) and an extension section two (10). The outer side wall of the extension section one (9) is attached to the outer side wall of the main beam tube (1). The outer side wall of the extension section two (10) is attached to the outer side walls of the first side tube (3) and the second side tube (4).

3. The reinforcing structure of an electric vehicle frame according to claim 1, characterized in that: Two grooves (11) are provided on the connecting plate (5). The front ends of the two first side tubes (3) are respectively located in the two grooves (11), and the first side tube (3) is adapted to the groove (11).

4. The reinforcing structure of an electric vehicle frame according to claim 1, characterized in that: A first flanging (12) is formed by bending the lower end of the connecting plate (5). The first flanging (12) is attached to the outer side walls of the two second side tubes (4) and the outer side wall of the main beam tube (1).

5. The reinforcing structure of an electric vehicle frame according to claim 1, characterized in that: The two reinforcing tubes (6), the main beam tube (1) and the two first side tubes (3) cooperate to form two first triangular structures (13). The two reinforcing tubes (6), the main beam tube (1) and the two second side tubes (4) cooperate to form two second triangular structures (14). The two first triangular structures (13) and the two second triangular structures (14) are both right-angled triangles.

6. The reinforcing structure of an electric vehicle frame according to claim 1, characterized in that: A plurality of support plates (15) are arranged between the first side tube (3) and the second side tube (4). The two ends of the plurality of support plates (15) are respectively bent to form a second flanging (16) and a third flanging (17). The second flanging (16) is attached to the outer side wall of the first side tube (3). The third flanging (17) is attached to the outer side wall of the second side tube (4).

7. The reinforcing structure of an electric vehicle frame according to claim 1, characterized in that: Reinforcing rings (18) are integrally provided at both ends of the front beam tube (2). A reinforcing seat (19) is arranged between the main beam tube (1) and the front beam tube (2). The outer side wall of the reinforcing seat (19) is attached to the outer side wall of the reinforcing ring (18).

8. The reinforcing structure of an electric vehicle frame according to claim 1, characterized in that: The rear ends of the two second side pipes (4) are provided with a rear vehicle frame (20).

9. The reinforcing structure of an electric vehicle frame according to claim 6, wherein: On both sides of several of the support plates (15), projections (21) are integrally provided, and the projections (21) are arranged along the length direction of the support plates (15).

Images