Frame for miniature electric four-wheeler

Abstract

A frame for a miniature electric four-wheeler belongs to the technical field of electric four-wheelers and is a frame type four-wheeler frame which is simple in structure, high in strength and low in cost by improving and optimizing a front frame of a frame for a totally-enclosed electric three-wheeled passenger car, and the front frame is mainly composed of rectangular steel and square tubes. Wherein a bottom platform at the front part of the frame is connected with a front cross beam of the bottom frame, and meanwhile, a left tubular beam and a right tubular beam at the front part of the frame are connected with the front parts of the two side door frames, so that a mutual reinforcing effect is achieved and the strength of the frames is also improved. The vehicle frame structure is simple in structure, convenient to transform and high in overall structural strength and rigidity, the research and development and manufacturing cost is reduced, the structural strength is improved while the welding internal stress is reduced, reinforcing plates do not need to be used for reinforcing, the technological process is simplified, and the vehicle frame welding process is greatly simplified through multi-wheel CAE professional simulation analysis and optimization design. The rigidity and the strength of the frame are far higher than those of same-grade products.

Description

Technical Field

[0001] This utility model belongs to the field of electric four-wheeled vehicle technology, specifically relating to a frame for a micro electric four-wheeled vehicle. Background Technology

[0002] Currently, most electric four-wheeled vehicle frames on the market use circular steel tube structures. This makes it difficult to guarantee precision at the locations where components need to be assembled, resulting in low production efficiency and requiring further processing to meet assembly requirements. This complicates the four-wheeled vehicle frame structure, increasing production costs due to the numerous welding points and complex processes. Therefore, based on a previously proposed frame for a fully enclosed electric tricycle (ZL202222335511.1), an improved and optimized frame for a micro electric four-wheeled vehicle is proposed. This design simplifies the structure, improves structural strength, and reduces R&D and manufacturing costs. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a frame for a micro electric four-wheeled vehicle, which has the characteristics of simple structure, few welding parts, light weight, high overall structural strength and rigidity, and low cost.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a frame for a micro electric four-wheeled vehicle, comprising a front frame, a right side door frame, a left side door frame, a rear platform frame, a bottom frame, and a top crossbeam of the frame. The left side door frame and the right side door frame are symmetrically arranged on the left and right sides of the bottom frame and fixedly connected thereto. The upper part of the front frame is connected to the front part of the left side door frame and the front part of the right side door frame, respectively. The lower part of the front frame is connected to the front part of the bottom frame. The rear part of the left side door frame and the rear part of the right side door frame are respectively connected to the left and right sides of the rear platform frame. The top of the left side door frame and the top of the right side door frame are respectively connected to the left and right sides of the top crossbeam of the frame.

[0005] The front frame includes a base platform, a front left inclined beam, a front right inclined beam, a front upper crossbeam, a front left pipe beam, and a front right pipe beam. The base platform is a rectangular frame structure, with its rear end connected to the front end of the base frame. The middle parts of the left and right sides of the base platform are respectively connected to the bottom ends of the front left and right inclined beams. The upper ends of the front left and right inclined beams are respectively connected to the front upper crossbeam. The left and right ends of the front upper crossbeam are respectively provided with front left pipe beams and front right pipe beams. The front left pipe beam is connected to the left door frame, and the front right pipe beam is connected to the right door frame.

[0006] A steering wheel support beam is located slightly to the left of the center of the upper front crossbeam. A left front shock absorber support and a right front shock absorber support are spaced apart on the upper front crossbeam. The left front shock absorber support and the right front shock absorber support are symmetrical about the center of the upper front crossbeam.

[0007] The upper part of the front left inclined beam is provided with a left side support beam for the bumper, the upper part of the front right inclined beam is provided with a right side support beam for the bumper, a brake pedal mounting support beam is provided between the middle of the front left inclined beam and the middle of the front right inclined beam, and brake oil pipe positioning plates are provided at the lower part of the front left inclined beam and the lower part of the front right inclined beam.

[0008] The bottom platform is provided with front swing arm mounting supports, which are symmetrically spaced on the left and right sides of the bottom platform.

[0009] The number of front swing arm mounting supports is four or more.

[0010] The beneficial effects of this utility model are: it improves and optimizes the original three-wheeled bus frame, making the structure simple, easy to modify, and with high overall structural strength and rigidity, thus reducing the cost of research and development and manufacturing. The frame structure reduces welding internal stress while increasing structural strength, eliminating the need for reinforcement plates and simplifying the process. The welding of the vehicle frame has undergone multiple rounds of CAE professional simulation analysis and optimization design, and the frame rigidity and strength far exceed those of similar products. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the front frame of this utility model.

[0013] Figure 3 This is a schematic diagram of the front frame structure of this utility model.

[0014] Figure 4 This is a schematic diagram of an existing three-wheeled passenger vehicle frame.

[0015] Figure 5 This is a schematic diagram of the existing front part of the frame Z.

[0016] In the diagram: 1. Front frame, 2. Right side door frame, 3. Top crossbeam of the frame, 4. Left side door frame, 5. Rear platform frame, 6. Bottom frame, 7. Front right tube beam, 8. Right front shock absorber support, 9. Front upper crossbeam, 10. Steering wheel support beam, 11. Left front shock absorber support, 12. Front left tube beam, 13. Front left diagonal beam, 14. Bumper left support beam, 15. Front control arm mounting support, 16. Brake pedal mounting support beam, 17. Bottom platform, 18. Brake oil pipe positioning plate, 19. Front right diagonal beam, 20. Bumper right support beam, 21. Front frame Z. Detailed Implementation

[0017] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] See Figures 1-3A frame for a micro electric four-wheeled vehicle includes a front frame 1, a right door frame 2, a left door frame 4, a rear platform frame 5, a bottom frame 6, and a top crossbeam 3. The left door frame 4 and the right door frame 2 are symmetrically arranged on the left and right sides of the bottom frame 6 and fixedly connected thereto. The upper part of the front frame 1 is connected to the front part of the left door frame 4 and the front part of the right door frame 2, respectively. The lower part of the front frame 1 is connected to the front part of the bottom frame 6. The rear part of the left door frame 4 and the rear part of the right door frame 2 are respectively connected to the left and right sides of the rear platform frame 5. The top of the left door frame 4 and the top of the right door frame 2 are respectively connected to the left and right ends of the top crossbeam 3 of the frame. The front frame 1 includes a base platform 17, a front left diagonal beam 13, a front right diagonal beam 19, a front upper crossbeam 9, a front left pipe beam 12, and a front right pipe beam 7. The base platform 17 is a rectangular frame structure. The rear of the base platform 17 is connected to the front of the base frame 6. The middle parts of the left and right sides of the base platform 17 are respectively connected to the bottom ends of the front left diagonal beam 13 and the front right diagonal beam 19. The upper ends of the front left diagonal beam 13 and the front right diagonal beam 19 are respectively connected to the front upper crossbeam 9. The left and right ends of the front upper crossbeam 9 are respectively provided with the front left pipe beam 12 and the front right pipe beam 7. The front left pipe beam 12 is connected to the left door frame 4, and the front right pipe beam 7 is connected to the right door frame 2. A steering wheel support beam 10 is located slightly to the left of the center of the upper front crossbeam 9. A left front shock absorber support 11 and a right front shock absorber support 8 are spaced apart on the upper front crossbeam 9, symmetrically positioned around the center of the upper front crossbeam 9. A left bumper support beam 14 is located on the upper part of the left front diagonal beam 13, and a right bumper support beam 20 is located on the upper part of the right front diagonal beam 19. A brake pedal mounting support beam 16 is located between the middle of the left front diagonal beam 13 and the middle of the right front diagonal beam 19. Brake oil pipe positioning plates 18 are located at the lower parts of both the left front diagonal beam 13 and the right front diagonal beam 19. A front control arm mounting support 15 is located on the bottom platform 17. There are four or more front control arm mounting supports 15, symmetrically spaced on both sides of the bottom platform 17.

[0019] The following is the improvement process of this utility model:

[0020] Existing three-wheeled passenger vehicle frames, such as Figure 4 As shown, it will be as follows Figure 5 The front frame Z21 shown is improved as follows: Figure 2 The front frame 1 shown becomes as follows Figure 1 The diagram shows a frame for a mini electric four-wheeled vehicle, with an improved front frame 1 structure as shown. Figure 3The structure shown is a frame structure. The front left tube beam 12 and the front right tube beam 7 are welded together with the front upper crossbeam 9. The front upper crossbeam 9 is welded together with the upper ends of the front left diagonal beam 13 and the front right diagonal beam 19. The lower ends of the front left diagonal beam 13 and the front right diagonal beam 19 are welded together with the bottom platform 17. A brake pedal mounting support beam 16 is welded between the middle of the front left diagonal beam 13 and the middle of the front right diagonal beam 19, forming the overall frame structure of the front frame 1. The front upper crossbeam 9, the front left diagonal beam 13, the front right diagonal beam 19 and the bottom platform 17 form an inverted triangular structure, which increases the stability of the front frame 1 and provides good support for the front of the entire frame.

[0021] When connecting the front frame 1 to the chassis as a whole: first, weld the left front tube beam 12 and the left door frame 4 together, and weld the right front tube beam 7 and the right door frame 2 together. Then, weld the bottom platform 17 to the bottom frame 6. Finally, weld the upper part of the steering wheel support beam 10 to the connecting crossbeam between the left door frame 4 and the right door frame 2. By welding at multiple points, the front frame 1 is connected to the chassis as a whole, making its structure stable. The frame structure of this chassis reduces welding internal stress and increases structural strength, eliminating the need for reinforcement plates and simplifying the process.

[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0023] The parts of this utility model not described in detail are existing technologies.

Claims

1. A frame for a micro electric four-wheeled vehicle, comprising a front section frame (1), a right side door frame (2), a left side door frame (4), a rear platform frame (5), a bottom frame (6) and a frame top cross beam (3), characterized in that: The left door frame (4) and the right door frame (2) are symmetrically arranged on the left and right sides of the bottom frame (6) and fixedly connected with the bottom frame (6), the upper part of the front part frame (1) is connected with the front part of the left door frame (4) and the front part of the right door frame (2) respectively, the lower part of the front part frame (1) is connected with the front part of the bottom frame (6), the rear part of the left door frame (4) and the rear part of the right door frame (2) are respectively connected with the left and right sides of the rear platform frame (5), and the top of the left door frame (4) and the top of the right door frame (2) are respectively connected with the left and right sides of the top beam (3) of the frame.

2. A frame for a micro electric four-wheeled vehicle according to claim 1, characterized in that: The front part frame (1) comprises a bottom platform (17), a front left inclined beam (13), a front right inclined beam (19), a front upper cross beam (9), a front left side tube beam (12) and a front right side tube beam (7), the bottom platform (17) is a rectangular frame structure, the rear part of the bottom platform (17) is connected with the front end of the bottom frame (6), the middle parts of the left and right sides of the bottom platform (17) are respectively connected with the bottom ends of the front left inclined beam (13) and the front right inclined beam (19), the upper ends of the front left inclined beam (13) and the front right inclined beam (19) are respectively connected with the front upper cross beam (9), the left and right ends of the front upper cross beam (9) are respectively provided with the front left side tube beam (12) and the front right side tube beam (7), the front left side tube beam (12) is connected with the left door frame (4), and the front right side tube beam (7) is connected with the right door frame (2).

3. A frame for a micro electric four-wheeled vehicle according to claim 2, characterized in that: The central part of the front upper cross beam (9) is provided with a steering wheel supporting beam (10), and the front upper cross beam (9) is provided with a left front shock absorber support (11) and a right front shock absorber support (8) at intervals.

4. A frame for a micro electric four-wheeled vehicle according to claim 3, characterized in that: The left front shock absorber support (11) and the right front shock absorber support (8) are symmetrically arranged on the left and right sides of the center of the front upper cross beam (9).

5. The frame for a micro electric four-wheeled vehicle according to claim 2, characterized by: The upper part of the front left inclined beam (13) is provided with a bumper left side supporting beam (14), and the upper part of the front right inclined beam (19) is provided with a bumper right side supporting beam (20).

6. A frame for a micro-motor quadricycle according to claim 5, characterised in that: The middle part of the front left inclined beam (13) and the middle part of the front right inclined beam (19) are provided with a brake pedal mounting supporting beam (16), and the lower part of the front left inclined beam (13) and the lower part of the front right inclined beam (19) are provided with a brake oil pipe positioning plate (18).

7. The frame for a micro electric four-wheeled vehicle according to claim 2, characterized by: The bottom platform (17) is provided with front swing arm mounting supports (15), and the front swing arm mounting supports (15) are symmetrically and spacedly arranged on the left and right sides of the bottom platform (17).

8. A frame for a micro-motor quadricycle according to claim 7, characterised in that: The number of the front swing arm mounting supports (15) is four or more.

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