Two-wheeled electric vehicle frame structure

Abstract

The utility model relates to electric motor car technical field especially is two -wheeled electric motor car frame structure, it includes girder part, frame part and tail part, girder part is used for installing handle and front wheel group, frame part includes left and right two symmetrical frames, frame and girder part weld fixed, tail part is connected to the rear end of frame part through the side pipe, the bottom of frame part sets up the bottom support part, frame part and bottom support part combination form the cavity of installing power battery after, girder part, frame part, tail part and bottom support part constitute the cage type frame structure together, the utility model discloses through girder part, frame part, tail part and bottom support part constitute the cage type frame structure, has improved the whole frame's impact strength, has reduced the weight, and has simplified the assembly procedure.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle technology, and in particular to a frame structure for a two-wheeled electric vehicle. Background Technology

[0002] Two-wheeled electric bicycles are a common mode of transportation. With the implementation of the new national standard, there are stricter requirements for the overall weight and safety performance of two-wheeled electric bicycles. The frame is the skeleton structure of the electric bicycle, providing strength and a mounting platform to facilitate the installation of other components. In existing technology, the frame structure is usually composed of various tubular components. During actual assembly and welding, there are certain errors in the welding of the tubular structure. The accumulation of these errors can lead to defects. In addition, the tubular frame structure lacks wiring design. Control lines, signal lines, etc., are usually directly tied along the tubular components, resulting in low protection and safety. Finally, welding requires multiple processes to weld one by one, affecting production efficiency and leading to higher costs. Utility Model Content

[0003] The purpose of this utility model is to address the problems existing in the background technology by proposing a frame structure for a two-wheeled electric vehicle.

[0004] The technical solution of this utility model is a two-wheeled electric vehicle frame structure, including a main beam, a frame, and a rear, wherein the main beam is used to install the handlebars and the front wheel assembly;

[0005] The frame consists of two symmetrical frames on the left and right sides; the frames are welded and fixed to the main beam.

[0006] The rear of the vehicle is connected to the rear end of the frame via a side tube; a bottom support is provided at the bottom of the frame; the frame and the bottom support are combined to form a cavity for installing the power battery;

[0007] The main beam, frame, rear, and bottom support together form a cage-like frame structure.

[0008] Preferably, the main beam section includes a head tube and a main beam tube;

[0009] The main beam tube is fixedly installed to the frame; the head tube is fixed to the end of the main beam tube at a certain angle; the connection between the head tube and the main beam tube forms a triangular area, and a reinforcing part is set in this area to provide secondary reinforcement to the head tube and the main beam tube.

[0010] Preferably, the head tube integrates a hook bracket and a speaker bracket.

[0011] Preferably, the frame is made of sheet metal.

[0012] The frame is symmetrically arranged on the frame section, and has hollowed-out and raised parts.

[0013] Preferably, two sets of large plates are symmetrically arranged and connected to the frame on both sides respectively;

[0014] After the main plate is assembled with the frame, an installation area is formed at the rear of the frame; the side tubes are inserted into the installation area and welded to the frame for fixation.

[0015] The large plate has pre-set fixing bolt positions, which facilitates the installation of the rear wheel assembly after connecting it with the swingarm assembly.

[0016] Preferably, a tailpipe is also provided at the rear of the vehicle; the tailpipe is welded and fixed to the ends of the two sets of side pipes;

[0017] The tailpipe is also fixed with a locking plate bracket and a shock absorber bracket.

[0018] Preferably, a connecting part is provided at one end of the side tube inserted into the installation area; the connecting part is formed by flattening a round tube and is integrally formed with the side tube.

[0019] Preferably, the bottom support includes a rectangular support frame and several connecting straps; the connecting straps all cross the bottom of the support frame and extend upward at both ends; the extended ends are welded and fixed to the vehicle frame.

[0020] Preferably, three sets of connecting strips are provided;

[0021] The extension end of the first connecting strip extends to the inside of the protrusion and is welded and fixed to the inner wall.

[0022] The extension end of the second connecting strip extends to the hollow part and is welded and fixed to the inner wall of the hollow part;

[0023] The extended end of the third connecting strap contacts the outer side of the large plate and extends all the way to the frame; thus, the large plate is secured a second time.

[0024] Preferably, it also includes a connecting pipe; both ends of the connecting pipe are fixedly installed to the large plate; and the tail end is reinforced.

[0025] Compared with the prior art, the present invention has the following beneficial technical effects:

[0026] This invention simplifies the number of parts by using a sheet metal frame instead of a traditional tubular structure.

[0027] In this embodiment, the rear of the frame protrudes outwards to facilitate installation with the large plate. After the large plate is assembled with the frame, a mounting area is formed at the rear of the frame. The formation of this mounting area allows the area to absorb energy through deformation when impacted. A connecting pipe is also separately installed at this location. Both ends of the connecting pipe are fixedly installed to the large plate, reinforcing the rear. Furthermore, this area has sufficient space to facilitate the installation of the vehicle's controller. Communication lines between the controller and the front and rear wheel sets, as well as the central control instrument cluster, can all be routed here. Control and signal lines are safer within this semi-enclosed area.

[0028] This utility model uses the main beam, frame, rear, and bottom support to form a cage-like frame structure, which improves the impact resistance of the entire frame, reduces weight, and simplifies the assembly process. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the vehicle frame according to an embodiment of the present utility model;

[0030] Figure 2 This is a side view of the vehicle frame structure according to an embodiment of the present utility model;

[0031] Figure 3 This is a schematic diagram of the rear structure of the vehicle frame in an embodiment of this utility model;

[0032] Figure 4 This is an exploded view of the vehicle frame according to an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the installation structure of the large plate and the vehicle frame in an embodiment of this utility model.

[0034] Reference numerals: 1. Main beam section; 11. Head tube; 12. Hook bracket; 13. Horn bracket; 14. Reinforcing section; 15. Main beam tube; 2. Frame section; 21. Frame; 22. Hollowed-out section; 23. Protrusion; 3. Rear section; 31. Lock plate bracket; 32. Tail tube; 33. Side tube; 331. Connecting section; 34. Shock absorber bracket; 4. Bottom support section; 41. Support frame; 42. Connecting belt; 5. Connecting tube; 6. Large plate. Detailed Implementation

[0035] Example 1

[0036] like Figure 1 As shown, the present invention proposes a two-wheeled electric vehicle frame structure, including a main beam 1, a frame 2, and a rear section 3. The main beam 1 is used to install the handlebars and the front wheel assembly.

[0037] The frame section 2 includes two symmetrical frames 21 on the left and right sides; the frames 21 are welded and fixed to the main beam section 1;

[0038] The rear end 3 is connected to the rear end of the frame part 2 via the side tube 33; the bottom of the frame part 2 is provided with a bottom support part 4; the frame part 2 and the bottom support part 4 are combined to form a cavity for installing the power battery.

[0039] The main beam 1, frame 2, rear 3, and bottom support 4 together form a cage-like frame structure. By using sheet metal frame 2 instead of the traditional tubular structure, the number of parts is simplified. The entire frame 21 is divided into two parts, left and right, which can be directly assembled and welded to the main beam 1, rear 3, and bottom support 4, reducing the number of parts and assembly steps and improving production efficiency. In addition, sheet metal parts are easy to process positioning holes for easy alignment and installation.

[0040] In this embodiment, the main beam section 1 includes a head tube 11 and a main beam tube 15; the main beam tube 15 is fixedly welded to the frame section 2; the head tube 11 is fixedly welded to the end of the main beam tube 15 at a certain inclined angle; the connection between the head tube 11 and the main beam tube 15 forms a triangular area, and a reinforcing part 14 is provided in this area to further tighten the head tube 11 and the main beam tube 15; the installation parts of the head tube 11 and the main beam tube 15 are reinforced to improve the overall impact resistance; finally, the head tube 11 integrates a hook bracket 12 and a horn bracket 13 to facilitate the installation of the corresponding hook assembly and horn assembly.

[0041] In this embodiment, the frame section 2 is a sheet metal part; the frame 21 on the frame section 2 is symmetrically arranged, and the frame 21 is provided with a hollow part 22 and a protrusion 23. The design of the hollow part 22 can reduce the weight of the entire frame section 2, which can reduce the weight by 10% compared with the traditional tubular frame structure; in addition, by using a sheet metal part and designing the hollow part 22, the longitudinal height of the frame 21 can be increased without changing the total weight, providing sufficient installation space and protection for the power battery; when subjected to external impact, the sheet metal part can absorb most of the energy, making it safer. The design of the protrusion 23 makes the outer surface of the sheet metal frame 21 keep at the same level as the rear assembly, which facilitates the assembly of the external appearance parts of the frame.

[0042] In this embodiment, the rear of the frame 21 protrudes outward to facilitate installation with the large plate 6; two sets of large plates 6 are symmetrically arranged and connected to the frames 2 on both sides respectively; after the large plate 6 is assembled with the frame 2, an installation area is formed at the rear of the frame 21; the side tube 33 is inserted into the installation area and fixed to the frame 21; a connecting part 331 is provided at one end of the side tube 33 inserted into the installation area; the connecting part 331 is formed by flattening a round tube and is integrally formed with the side tube 33. Figure 3 As shown, the installation area allows the part to absorb energy through deformation when impacted. A connecting pipe 5 is also separately installed in this area; both ends of the connecting pipe 5 are fixedly installed to the large plate 6; reinforcement is provided to the rear. This ensures sufficient strength while facilitating the installation of the tailpipe 32. Furthermore, the area has sufficient space for installing the vehicle's controller; communication lines between the controller and the front and rear wheel sets, as well as the central control instrument, can all be arranged here. Extending forward along the installation area, it can extend along the side wall of the frame 21 to near the installation position of the main beam tube 15, making the control and signal lines safer within the semi-enclosed area.

[0043] In this embodiment, the large plate 6 has a pre-set fixing bolt position, which facilitates the installation of the rear wheel set after connecting with the swingarm assembly; it also facilitates the platform design of the frame, and the wheelbase can be adjusted by adjusting the swingarm length, thereby reducing the frame development cost.

[0044] In this embodiment, a tailpipe 32 is also provided on the rear of the vehicle 3; the tailpipe 32 is welded and fixed to the ends of the two sets of side pipes 33; a lock plate bracket 31 and a shock absorber bracket 34 are also fixed on the tailpipe 32 to facilitate the installation of the lock plate and the shock absorber.

[0045] In this embodiment, the bottom support 4 includes a rectangular support frame 41 and a plurality of connecting straps 42; the connecting straps 42 all cross the bottom of the support frame 41 and both ends of the connecting straps 42 extend upward; the extended ends are connected and fixed to the frame 21.

[0046] As a preferred option, three sets of connecting strips 42 are provided;

[0047] The extension end of the first connecting strip extends to the inner side of the protrusion 23 and is welded and fixed to the inner sidewall.

[0048] The extension end of the second connecting strip extends to the hollow part 22 and is welded and fixed to the inner wall of the hollow part 22.

[0049] The extended end of the third connecting strap contacts the outer side of the large plate 6 and extends all the way to the frame 21, providing secondary fixation for the large plate 6. The three connecting straps also provide protection for the wiring installed from this point. In this embodiment, the frame part 2 and the bottom support part 4 are combined to form a cavity for installing the power battery, where an appropriate number of power batteries can be installed as needed. The main beam part 1, frame part 2, rear part 3, and bottom support part 4 together constitute a cage-like frame structure, which improves the impact resistance of the entire frame, reduces weight, and simplifies the assembly process.

[0050] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A frame structure for a two-wheeled electric vehicle, comprising a main beam (1), a frame (2), and a rear section (3), characterized in that, The main beam (1) is used to install the handlebars and the front wheel assembly; The frame section (2) includes two symmetrical frames (21) on the left and right sides; the frames (21) are welded and fixed to the main beam section (1); The rear end (3) is connected to the rear end of the frame part (2) through the side tube (33); the bottom support part (4) is provided at the bottom of the frame part (2); the frame part (2) and the bottom support part (4) are combined to form a cavity for installing the power battery; The main beam (1), the frame (2), the rear (3), and the bottom support (4) together form a cage frame structure.

2. The frame structure of a two-wheeled electric vehicle according to claim 1, characterized in that, The main beam section (1) includes a head tube (11) and a main beam tube (15); The main beam tube (15) is fixedly installed with the frame part (2); the head tube (11) is fixed at a certain angle to the end of the main beam tube (15); the connection between the head tube (11) and the main beam tube (15) forms a triangular area, and a reinforcing part (14) is provided in this area to provide secondary reinforcement to the head tube (11) and the main beam tube (15).

3. A two-wheeled electric vehicle frame structure according to claim 1 or 2, characterized in that, The head tube (11) is integrated with a hook bracket (12) and a horn bracket (13).

4. The frame structure of a two-wheeled electric vehicle according to claim 1, characterized in that, The frame section (2) is a sheet metal part; The frame (21) on the frame part (2) is symmetrically arranged, and the frame (21) is provided with a hollow part (22) and a protrusion (23).

5. The frame structure of a two-wheeled electric vehicle according to claim 1, characterized in that, Two sets of large plates (6) are symmetrically arranged and connected to the frame (21) on both sides respectively; After the large plate (6) is welded to the frame (21), an installation area is formed at the rear of the frame (21); the side tube (33) is inserted into the installation area and fixed to the frame (21); The large plate (6) has a pre-set fixing bolt position, which facilitates the installation of the rear wheel assembly after connecting it with the flat fork assembly.

6. The frame structure of a two-wheeled electric vehicle according to claim 5, characterized in that, A tailpipe (32) is also installed at the rear of the vehicle (3); the tailpipe (32) is welded and fixed to the ends of the two sets of side pipes (33); The tailpipe (32) is also fixed with a locking plate bracket (31) and a shock absorber bracket (34).

7. The frame structure of a two-wheeled electric vehicle according to claim 6, characterized in that, A connecting part (331) is provided at one end of the side tube (33) inserted into the installation area; the connecting part (331) is formed by flattening a round tube and is integrally formed with the side tube (33).

8. The frame structure of a two-wheeled electric vehicle according to claim 1, characterized in that, The bottom support (4) includes a rectangular support frame (41) and several connecting straps (42); the connecting straps (42) all cross the bottom of the support frame (41) and extend upward at both ends; the extended ends are welded and fixed to the frame (21).

9. A two-wheeled electric vehicle frame structure according to claim 8, characterized in that, Three sets of connecting strips (42) are provided; The extension end of the first connecting strip extends to the inside of the protrusion (23) and is welded and fixed to the inner wall; The extension end of the second connecting strip extends to the hollow part (22) and is welded and fixed to the inner wall of the hollow part (22); The extension end of the third connecting strap contacts the outer side of the large plate (6) and extends all the way to the frame (21); the large plate (6) is then fixed a second time.

10. A two-wheeled electric vehicle frame structure according to claim 1, characterized in that, It also includes a connecting pipe (5); both ends of the connecting pipe (5) are fixedly installed to the large plate (6); and the tail is reinforced.

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