Electric vehicle frame

Abstract

The utility model discloses an electric vehicle frame which comprises a main frame, a front beam connected to the front end of the main frame and a front vertical pipe connected to the front end of the front beam, and the main frame comprises first main pipes connected to the left side and the right side of the front beam and second main pipes connected to the left side and the right side of the front beam and located below the first main pipes. The first main pipe comprises a straight first middle pipe, a first front pipe connected to the front side of the first middle pipe and a first rear pipe connected to the rear side of the first middle pipe, and the second main pipe comprises a straight second middle pipe, a second front pipe connected to the front side of the second middle pipe and a second rear pipe connected to the rear side of the second middle pipe. The side, close to the front beam, of the first middle pipe is concaved inwards to form a first groove, the side, close to the front beam, of the second middle pipe is concaved inwards to form a second groove, and therefore the stability and the anti-pressure capacity of the main frame are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to an electric vehicle frame. Background Art

[0002] An electric vehicle is a mechatronic personal transportation tool that uses batteries as auxiliary energy and is based on an ordinary bicycle. It is equipped with a motor, controller, battery, throttle, brake handle and other operating components and a display instrument system. Among them, the frame is the main component of the electric vehicle, and the quality of the frame design is directly related to the riding quality (controllability, stability and driving comfort) of the electric vehicle product. Therefore, the design of the frame needs to meet the assembly requirements of the whole vehicle while also meeting performance requirements such as stiffness and strength. Existing frames are generally made by welding pipes, and the pipes are generally hollow structures, resulting in poor compressive resistance, especially the straight pipes in the middle section of the frame, which are more prone to breakage. Utility Model Content

[0003] In view of this, an object of the present invention is to provide an electric vehicle frame which can improve the stability and compression resistance of the frame.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] An electric vehicle frame includes a main frame, a front beam connected to the front end of the main frame, and a front vertical pipe connected to the front end of the front beam, the main frame includes a first main pipe connected to the left and right sides of the front beam, and a second main pipe connected to the left and right sides of the front beam and located below the first main pipe, the first main pipe includes a straight first middle pipe, a first front pipe connected to the front side of the first middle pipe, and a first rear pipe connected to the rear side of the first middle pipe, the second main pipe includes a straight second middle pipe, a second front pipe connected to the front side of the second middle pipe, and a second rear pipe connected to the rear side of the second middle pipe, the first middle pipe is concave inwardly on one side close to the front beam to form a first groove, and the second middle pipe is concave inwardly on one side close to the front beam to form a second groove.

[0006] In a preferred embodiment of the present invention, the second middle tube is close to the lower side of the first middle tube, and the second rear tube is close to the lower side of the first middle tube.

[0007] In a preferred embodiment of the present invention, an angle is formed between the first front tube and the second front tube, so that the first front tube, the second front tube and the front beam form a triangle.

[0008] In a preferred embodiment of the present invention, the contact surface between the first front tube and the front beam is an arc surface, and both sides of the arc surface are connected to the front beam.

[0009] In a preferred solution of the utility model, the number of the first main pipe and the number of the second main pipe are both two and they are respectively connected to the left and right sides of the front beam.

[0010] In a preferred embodiment of the present invention, the first rear tube and the second rear tube are both in the shape of a seven-shaped tube, and a connecting rod connecting the two first rear tubes is provided at the rear ends thereof, and the lower ends of the connecting rods connect the two second rear tubes.

[0011] In a preferred embodiment of the present invention, the first front tube, the first middle tube and the first rear tube are an integrated structure, and the second front tube, the second middle tube and the second rear tube are an integrated structure.

[0012] In a preferred embodiment of the present invention, a U-shaped block connecting the two second front tubes is provided on the front side thereof, and the middle portion of the U-shaped block is connected to the front beam.

[0013] The beneficial effects of the utility model are as follows: the electric vehicle frame includes a main frame, a front beam and a front vertical pipe, the main frame includes two closely adjacent first main pipes and second main pipes, wherein the first main pipe includes a first front pipe, a first middle pipe and a first rear pipe; the second main pipe includes a second front pipe, a second middle pipe and a second rear pipe, and the first middle pipe is concave inwardly on one side close to the front beam to form a first groove; the second middle pipe is concave inwardly on one side close to the front beam to form a second groove, thereby increasing the stability and compression resistance of the main frame. In addition, an angle is formed between the first front pipe and the second front pipe, so that the first front pipe, the second front pipe and the front beam form a triangle, thereby enhancing the overall stability and torsion resistance of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of an electric vehicle frame of the utility model;

[0015] Figure 2 It is a schematic diagram of a first main pipe in an electric vehicle frame of the utility model;

[0016] Figure 3 The utility model is a schematic diagram of a second main pipe in an electric vehicle frame. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present utility model will be described clearly and completely below in conjunction with the accompanying drawings.

[0018] Reference Figures 1 to 3, an electric vehicle frame, comprising a main frame 1, a front beam 2 connected to the front end of the main frame 1, and a front vertical pipe 3 connected to the front end of the front beam 2, the main frame 1 comprising a first main pipe 11 connected to the left and right sides of the front beam 2, and a second main pipe 12 connected to the left and right sides of the front beam 2 and located below the first main pipe 11, the first main pipe 11 comprising a straight first middle pipe 111, a first front pipe 112 connected to the front side of the first middle pipe 111, and a first rear pipe 113 connected to the rear side of the first middle pipe 111, the second main pipe 12 comprising a straight second middle pipe 121 , a second front tube 122 connected to the front side of the second middle tube 121, and a second rear tube 123 connected to the rear side of the second middle tube 121; at the same time, the side of the first middle tube 111 close to the front beam 2 is recessed inward to form a first groove 114, and the side of the second middle tube 121 close to the front beam 2 is recessed inward to form a second groove 12, and at the same time, the first groove 114 runs through the entire first middle tube 111, and the second groove 12 runs through the entire second middle tube 121, so as to increase the stability and pressure resistance of the main frame 1, and the space reserved between the first middle tube 111 and the second middle tube 121 becomes larger.

[0019] In this solution, the second middle tube 121 is close to the lower side of the first middle tube 111 and is connected by welding, and the first rear tube 113 is close to the lower side of the second middle tube and is connected by welding, so that the first main tube 11 and the second main tube 12 are close together, thereby improving the resistance of the main frame 1.

[0020] In this solution, an angle is formed between the first front tube 112 and the second front tube 122, and the angle is preferably 45 degrees, so that the first front tube 112, the second front tube 122 and the front beam 2 form a triangle, thereby enhancing the overall stability and anti-torsion ability of the main frame 1, while also reducing the force concentration and extending the service life of the frame. Preferably, a fixing block 6 that can fix the first front tube 112, the second front tube 122 and the front beam 2 is provided on the front side to make the connection between the three tighter.

[0021] In this solution, the contact surface of the first front tube 112 connected to the front beam 2 is an arc surface, and both sides of the arc surface are connected to the front beam 2 and connected by welding, so that the first front tube 112 is more firmly connected to the front beam 2.

[0022] In this solution, the number of the first main pipe 11 and the second main pipe 12 are both two and they are respectively connected to the left and right sides of the front beam 2 by welding. Furthermore, the shape of the first rear pipe 113 and the second rear pipe 123 are both seven-shaped, and the rear ends of the two first rear pipes 113 are provided with a connecting rod 4 connecting the two, and the lower end of the connecting rod 4 connects the two second rear pipes 123, thereby improving the overall bearing capacity of the main frame 1.

[0023] In this embodiment, the first front tube 112, the first middle tube 111 and the first rear tube 113 are an integrated structure, and the second front tube 122, the second middle tube 121 and the second rear tube 123 are an integrated structure, that is, the first main tube 11 and the second main tube 12 are integrally formed.

[0024] In this solution, the front sides of the two second front tubes 122 are provided with a U-shaped block 5 connecting the two, and the middle part of the U-shaped block 5 is connected to the front beam 2. Specifically, the upper and lower sides of the U-shaped block 5 are respectively connected to the upper and lower ends of the second front tube 122, and the upper and lower sides of the U-shaped block 5 are provided with arc grooves matching the front beam 2, and the second front tube 122 and the front beam 2 are connected to the U-shaped block 5 by welding. In this way, the structural rigidity of the frame is strengthened, and the controllability and safety of the vehicle are improved.

[0025] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An electric vehicle frame, comprising a main frame (1), a front beam (2) connected to the front end of the main frame (1), and a front riser (3) connected to the front end of the front beam (2), characterized in that: The main frame (1) comprises a first main pipe (11) connected to the left and right sides of the front beam (2), and a second main pipe (12) connected to the left and right sides of the front beam (2) and located below the first main pipe (11); the first main pipe (11) comprises a straight first middle pipe (111), a first front pipe (112) connected to the front side of the first middle pipe (111), and a first rear pipe (113) connected to the rear side of the first middle pipe (111); the second main pipe (12) comprises a straight second middle pipe (121), a second front pipe (122) connected to the front side of the second middle pipe (121), and a second rear pipe (123) connected to the rear side of the second middle pipe (121); a side of the first middle pipe (111) close to the front beam (2) is recessed inwards to form a first groove (114); a side of the second middle pipe (121) close to the front beam (2) is recessed inwards to form a second groove (124).

2. An electric vehicle frame according to claim 1, characterized in that: The second middle tube (121) is closely attached to the lower side of the first middle tube (111), and the second rear tube (123) is closely attached to the lower side of the first middle tube (111).

3. The electric vehicle frame according to claim 1, characterized in that: An included angle is formed between the first front tube (112) and the second front tube (122), so that the first front tube (112), the second front tube (122) and the front beam (2) form a triangle.

4. The electric vehicle frame according to claim 1, characterized in that: The contact surface between the first front tube (112) and the front beam (2) is an arc surface, and both sides of the arc surface are connected to the front beam (2).

5. The electric vehicle frame according to claim 1, characterized in that: The number of the first main pipe (11) and the number of the second main pipe (12) are both two and they are respectively connected to the left and right sides of the front beam (2).

6. The electric vehicle frame according to claim 1, characterized in that: The first rear tube (113) and the second rear tube (123) are both in the shape of a seven-shaped tube. The rear ends of the two first rear tubes (113) are provided with a connecting rod (4) connecting the two, and the lower end of the connecting rod connects the two second rear tubes (123).

7. The electric vehicle frame according to claim 1, characterized in that: The first front tube (112), the first middle tube (111) and the first rear tube (113) are an integrated structure, and the second front tube (122), the second middle tube (121) and the second rear tube (123) are an integrated structure.

8. The electric vehicle frame according to claim 1, characterized in that: A U-shaped block (5) is provided at the front side of the two second front tubes (122) to connect the two, and the middle part of the U-shaped block (5) is connected to the front beam (2).

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