Electric vehicle frame

Abstract

The utility model discloses an electric vehicle frame which comprises a middle frame body, a fixing pipe is connected to the middle of the middle frame body, a shock absorber connecting plate is connected to one end of the fixing pipe, adapter plates are formed at the rear end of the bottom face of the middle frame body, and the two adapter plates are formed on the two side faces of the middle frame body. A shock absorber connecting plate is formed between the adapter plates, a rear wheel frame is rotatably connected between the adapter plates, a shock absorber clamping plate is formed at the front end of the rear wheel frame, and a shock absorber is connected between the shock absorber connecting plate and the shock absorber clamping plate. The shock absorber is connected between the rear wheel frame and the middle frame, shock absorption and buffering are conducted on the rear wheel firstly through swinging of the rear wheel frame, then shock absorption is conducted on the rear wheel frame again through the shock absorber, shock transmitted by the whole frame is further reduced, and the shock absorption capacity and the driving comfort of the electric vehicle are greatly improved through the frame of the structure.

Description

Technical Field

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

[0002] The frame is an indispensable part of an electric vehicle. As the main skeleton of the electric vehicle, it specifically provides a reasonable installation position for the front wheel, rear wheel, handlebar, battery, motor and brake system. For example, the whole vehicle frame structure of the electric vehicle in Chinese patent CN220640131U transmits the vibration generated during driving to the overall frame by installing spring buffers on both ends of the rear wheel mounting bracket. This causes the overall shock absorption of the frame to be too hard, and the vibration force is directly transmitted to the driver through the spring buffer and the frame in turn, resulting in poor riding comfort. Therefore, the electric vehicle frame is designed to improve the buffering capacity of the frame and make driving more comfortable. Utility Model Content

[0003] The utility model aims to provide an electric vehicle frame, which is connected to a rear wheel frame by rotation between adapter plates of an intermediate frame, and a shock absorber is connected between the rear wheel frame and the intermediate frame. The swing of the rear wheel frame is utilized to firstly reduce shock and buffer the rear wheel, and then the shock absorber is utilized to reduce the vibration of the rear wheel frame again, thereby further reducing the vibration transmitted by the frame as a whole. The frame with this structure greatly improves the shock absorption capacity and improves the driving comfort of the electric vehicle.

[0004] The utility model provides the following technical solution: an electric vehicle frame comprises an intermediate frame, a fixing tube is connected to the middle of the intermediate frame, a shock absorber connecting plate is connected to one end of the fixing tube, an adapter plate is formed on the rear end of the bottom surface of the intermediate frame, two adapter plates are formed on the two side surfaces of the intermediate frame, a rear wheel frame is rotatably connected between the adapter plates, a shock absorber clamping plate is formed at the front end of the rear wheel frame, a shock absorber is connected between the shock absorber connecting plate and the shock absorber clamping plate, and a rear wheel is connected to the rear end of the rear wheel frame.

[0005] In order to enable the rear wheel frame to swing, the rear wheel frame also includes a sleeve, a rotating shaft is rotatably connected inside the sleeve, the rotating shaft is fixed between the adapter plates, the shock absorber clamp is fixed on the sleeve, rear wheel connecting rods are also connected to both ends of the sleeve, the rear wheel is connected between the rear wheel connecting rods on both sides, a clamp support plate is also connected between the rear wheel connecting rods, and one end of the shock absorber clamp is fixed on the clamp support plate.

[0006] In order to install the front wheel, a front wheel frame connecting pipe is connected to the end of the intermediate frame, the lower end of the front wheel frame connecting pipe is connected to the front wheel frame, and the lower end of the front wheel frame is connected to the front wheel.

[0007] In order to improve the installation efficiency of the handlebar, the upper end of the front wheel frame connecting pipe is connected to the handlebar connecting pipe, and the handlebar connecting pipe is connected to the handlebar.

[0008] In order to install the support frame and prevent the frame from tipping over, a support frame connecting plate is also connected between the adapter plates, one end of the support frame connecting plate is formed with a mounting tube, and the mounting tube is fixed between the adapter plates. The support frame connecting plate is also connected to the lower end of the intermediate frame, and the lower end of the support frame connecting plate is connected to the support frame through a fastener.

[0009] In order to install the seat and ensure the stability of the seat, a seat front support frame and a seat rear support frame are formed at the rear end of the intermediate frame, and the seat front support frame and the seat rear support frame are used to fix the seat.

[0010] In order to install a guard bar to protect the body of the electric vehicle, an upper guard bar mounting frame is fixed on the side of the front wheel frame connecting tube, and a lower guard bar mounting plate is fixed on the two side end surfaces of the intermediate frame. The guard bar is fixed between the upper guard bar mounting frame and the lower guard bar mounting plate.

[0011] Compared with the prior art, the beneficial effect achieved by the utility model is as follows: by rotatably connecting the rear wheel frame between the adapter plates of the middle frame, connecting the shock absorber between the rear wheel frame and the middle frame, connecting the rear wheel to the end of the rear wheel frame, utilizing the swing of the rear wheel frame to firstly dampen and buffer the vibration of the rear wheel, and then utilizing the shock absorber to dampen the vibration of the rear wheel frame again, further reducing the vibration transmitted by the frame as a whole. The frame with this structure greatly improves the shock absorption capacity and improves the driving comfort of the electric vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the connection structure of the intermediate frame and the shock absorber of the utility model;

[0015] Figure 3 It is a schematic diagram of the connection structure of the intermediate frame and the shock absorber of the utility model from another perspective;

[0016] Figure 4 It is a structural schematic diagram of the intermediate frame of the utility model;

[0017] Figure 5It is a structural schematic diagram of the intermediate frame of the utility model from another perspective;

[0018] Figure 6 It is a structural schematic diagram of the rear wheel frame of the utility model;

[0019] In the figure: 1. middle frame; 11. handlebar connecting tube; 12. front wheel frame connecting tube; 121. protective bar upper mounting frame; 13. fixing tube; 14. shock absorber connecting plate; 15. support frame connecting plate; 151. mounting tube; 16. adapter plate; 17. seat front support frame; 18. seat rear support frame; 19. protective bar lower mounting plate; 2. front wheel frame; 3. front wheel; 4. rear wheel frame; 41. shock absorber clamping plate; 42. sleeve; 43. rotating shaft; 44. rear wheel connecting rod; 45. clamping plate support plate; 5. rear wheel; 6. handlebar; 7. support frame; 8. shock absorber. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0021] See also Figures 1 to 6 The utility model provides a technical solution: an electric vehicle frame, including an intermediate frame 1, a fixing pipe 13 is connected to the middle of the intermediate frame 1, a shock absorber connecting plate 14 is connected to one end of the fixing pipe 13, an adapter plate 16 is formed on the rear end of the bottom surface of the intermediate frame 1, two adapter plates 16 are formed on the two side surfaces of the intermediate frame 1, a rear wheel frame 4 is rotatably connected between the adapter plates 16, a shock absorber clamping plate 41 is formed at the front end of the rear wheel frame 4, the shock absorber clamping plate 41 includes a top plate, side plates are formed downward at both ends of the top plate, a shock absorber 8 is connected between the side plates, so that the shock absorber 8 can rotate downward with the connecting hole on the side plate as the center of the circle, a shock absorber 8 is connected between the shock absorber connecting plate 14 and the shock absorber clamping plate 41, and the shock absorber The device connecting plate 14 is rotatably connected to the shock absorber 8, and the rear end of the rear wheel frame 4 is connected to the rear wheel 5, and the vibration of the rear wheel 5 is transmitted through the rear wheel frame 4. At the same time, the rear wheel frame 4 is rotatably connected to the adapter plate 16, so that the rear wheel frame 4 can rotate with the adapter plate 16 as the center of the circle, so as to buffer the vibration of the rear wheel 5, and the shock absorber clamping plate 41 at the upper end of the rear wheel frame 4 is connected to the shock absorber 8 through a pin shaft, so as to further transmit the vibration of the rear wheel frame 4 to the shock absorber 8, thereby improving the shock absorbing capacity. The existing vehicle frames all directly connect the shock absorbers to the rear wheel frames, and the vibrations are directly transmitted to the driver through the shock absorbers and the vehicle frames. Therefore, the technical solution greatly improves the shock absorbing capacity of the vehicle frame and improves the comfort of the electric vehicle.

[0022] like Figure 2 , 3 As shown in FIG6 , the rear wheel frame 4 also includes a sleeve 42, in which a rotating shaft 43 is rotatably connected, and the rotating shaft 43 is fixed between the adapter plates 16. The rear wheel frame 4 rotates and swings around the rotating shaft 43, and the shock absorber clamping plate 41 is fixed on the sleeve 42. The rotation of the rear wheel frame 4 will drive the shock absorber clamping plate 41 to swing back and forth, so that the shock absorber 8 can be buffered and the vibration of the frame can be reduced. Rear wheel connecting rods 44 are also connected to both ends of the sleeve 42. The rear wheel 5 is connected between the rear wheel connecting rods 44 on both sides, and a clamping plate support plate 45 is also connected between the rear wheel connecting rods 44. One end of the shock absorber clamping plate 41 is fixed on the clamping plate support plate 45, and the rear wheel frame 4 swings between the adapter plates 16 to transmit the vibration on the rear wheel 5 to the rear wheel frame 4. At the same time, the swing of the rear wheel frame 4 can further buffer the vibration and reduce the vibration transmitted to the frame.

[0023] like Figure 1 As shown, a front wheel frame connecting tube 12 is connected to the end of the intermediate frame 1, a front wheel frame 2 is connected to the lower end of the front wheel frame connecting tube 12, an upper end of the front wheel frame 2 is sleeved and fixed on the lower end of the front wheel connecting tube 12, and a front wheel 3 is connected to the lower end of the front wheel frame 2 via a buffer tube to buffer the front wheel 3.

[0024] like Figure 1 As shown, the upper end of the front wheel frame connecting tube 12 is connected to the handlebar connecting tube 11, and the handlebar connecting tube 11 is connected to the handlebar 6. The handlebar 6 is inserted into the handlebar connecting tube 11, so that the handlebar 6 is easy to install.

[0025] like Figure 1 , 4 As shown in Figure 5, a support frame connecting plate 15 is fixed between the adapter plates 16 by fasteners, and a mounting tube 151 is formed at one end of the support frame connecting plate 15. The mounting tube 151 is fixed between the adapter plates 16 by fasteners. The support frame connecting plate 15 is also welded to the lower end of the intermediate frame 1, and the lower end of the support frame connecting plate 15 is connected to the support frame 7 by fasteners. The support frame 7 is used to support the electric vehicle to prevent the electric vehicle from falling.

[0026] A seat front support frame 17 and a seat rear support frame 18 are formed at the rear end of the intermediate frame 1. The seat front support frame 17 and the seat rear support frame 18 are used to fix the seat to ensure the stability of the seat.

[0027] A guard bar upper mounting frame 121 is fixed on the side of the front wheel frame connecting tube 12, and a guard bar lower mounting plate 19 is fixed on the end surfaces of both sides of the intermediate frame 1. The guard bar upper mounting frame 121 and the guard bar lower mounting plate 19 are used to fix the guard bar, and the vehicle body is protected by installing the guard bar.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electric vehicle frame, including an intermediate frame, characterized in that: A fixing tube is connected to the middle of the intermediate frame, a shock absorber connecting plate is connected to one end of the fixing tube, an adapter plate is formed on the rear end of the bottom surface of the intermediate frame, two adapter plates are formed on both side surfaces of the intermediate frame, a rear wheel frame is rotatably connected between the adapter plates, a shock absorber clamping plate is formed at the front end of the rear wheel frame, a shock absorber is connected between the shock absorber connecting plate and the shock absorber clamping plate, and a rear wheel is connected to the rear end of the rear wheel frame.

2. The electric vehicle frame according to claim 1, characterized in that: The rear wheel frame also includes a sleeve, a rotating shaft is rotatably connected inside the sleeve, the rotating shaft is fixed between the adapter plates, the shock absorber clamp is fixed on the sleeve, rear wheel connecting rods are also connected to both ends of the sleeve, the rear wheel is connected between the rear wheel connecting rods on both sides, a clamp support plate is also connected between the rear wheel connecting rods, and one end of the shock absorber clamp is fixed to the clamp support plate.

3. The electric vehicle frame according to claim 1, characterized in that: A front wheel frame connecting pipe is connected to the end of the intermediate frame, a front wheel frame is connected to the lower end of the front wheel frame connecting pipe, and a front wheel is connected to the lower end of the front wheel frame.

4. The electric vehicle frame according to claim 3, characterized in that: The upper end of the front wheel frame connecting pipe is connected with a handlebar connecting pipe, and the handlebar connecting pipe is connected with a handlebar.

5. The electric vehicle frame according to claim 1, characterized in that: A support frame connecting plate is also connected between the adapter plates, one end of the support frame connecting plate is formed with a mounting tube, the mounting tube is fixed between the adapter plates, the support frame connecting plate is also connected to the lower end of the intermediate frame, and the lower end of the support frame connecting plate is connected to the support frame through a fastener.

6. The electric vehicle frame according to claim 1, characterized in that: A seat front support frame and a seat rear support frame are formed at the rear end of the intermediate frame, and the seat front support frame and the seat rear support frame are used to fix the seat.

7. The electric vehicle frame according to claim 3, characterized in that: A protective rod upper mounting frame is fixed on the side of the front wheel frame connecting pipe, and a protective rod lower mounting plate is fixed on the end surfaces of both sides of the intermediate frame. The protective rod upper mounting frame and the protective rod lower mounting plate are used to fix the protective rod.

Images