Electric folding bicycle frame with upper and lower double-lever shock absorption structure and electric folding bicycle

Abstract

The utility model discloses an electric folding bicycle frame with an up-and-down double-lever shock-absorbing structure and an electric folding bicycle with the same, the end of a middle tube of the frame is provided with a lock catch for locking a saddle, the front side of the middle tube is of a folding structure, the rear side of the middle tube is provided with a rear goods shelf, the rear goods shelf is hinged with the folding structure on the front side of the middle tube through a goods shelf rotating shaft, and the middle tube is provided with an upper-and-lower double-lever shock-absorbing structure. The front end of the rear goods shelf is connected with the upper end of a front shock absorber through an upper rotating shaft; the lower end of the front shock absorber is hinged with a five-way seat fixed on the front side of the lower end of the middle pipe through a lower rotating shaft; a fixed bottom fork fixed to the middle pipe is arranged on the lower side of the bottom plate, a movable bottom fork is hinged to the rear end of the fixed bottom fork through a bottom fork shaft, the movable bottom fork is in a U shape, installation bases are welded to the two ends of the movable bottom fork, the installation bases are hinged to the lower end of a rear shock absorber, and the upper end of the rear shock absorber is hinged to an extending part, obliquely extending towards the lower rear portion, of the rear goods shelf. The front shock absorption structure with the rear goods shelf as a lever is utilized, the lever structure is used for conducting shock absorption, and different from a traditional structure, the structure is innovative, and the shock absorption effect is good.

Description

Technical Field

[0001] The utility model belongs to the field of electric vehicles and contains a shock absorption mechanism, and particularly relates to a frame of an electric folding vehicle with an upper and lower double-lever shock absorption structure and an electric folding vehicle. Background Art

[0002] An electric folding vehicle is composed of a traditional electric vehicle including parts such as a frame, a wheel set, a battery pack, a control system, a drive system, etc. plus a folding joint.

[0003] The battery pack is generally arranged at the pedal or behind the seat cushion. A shock absorption mechanism is arranged at the rear wheel of the electric vehicle. The commonly used mechanism is a spring shock absorber. However, the current installation method directly connects the shock absorber to the installation position of the rear wheel and the rear seat cushion (rear shelf), so the shock absorption effect is poor. Summary of the Invention

[0004] In view of the above background, the purpose of the utility model is to design a frame of an electric folding vehicle with an upper and lower double-lever shock absorption structure and an electric folding vehicle to solve the problems in the prior art.

[0005] The specific scheme of the utility model is as follows:

[0006] A frame of an electric folding vehicle with an upper and lower double-lever shock absorption structure. The frame has a middle tube 1 arranged in the middle. The upper end of the middle tube 1 is provided with a lock for locking the seat. The front side of the middle tube 1 is foldable or a folding structure;

[0007] A rear shelf 10 is arranged at the rear side of the middle tube 1. The rear shelf 10 is hinged to the foldable or folding structure on the front side of the middle tube 1 through a shelf rotating shaft 23. The upper end of the front shock absorber 13 is connected to the front end of the rear shelf 10 through an upper rotating shaft 12. The lower end of the front shock absorber 13 is hinged to a bottom bracket seat 15 fixed to the front side of the lower end of the middle tube 1 through a lower rotating shaft 14;

[0008] A fixed flat fork 16 is fixed to the rear side below the middle tube 1. The rear end of the fixed flat fork 16 is hinged to a movable flat fork 18 through a flat fork shaft 17. The movable flat fork 18 is in a "U" shape, and mounting seats 19 are welded to both ends thereof. The mounting seats 19 are hinged to the lower ends of rear shock absorbers 20. The upper ends of the rear shock absorbers 20 are hinged to an extension part 21 extending obliquely backward and downward of the rear shelf 10.

[0009] Furthermore,

[0010] The mounting seat 19 is used for connecting the rear wheel mechanism of the electric folding vehicle,

[0011] The front side of the middle tube 1 is connected to a rear main beam tube 2. The rear main beam tube 2 is connected to a front main beam tube 3 through a folding mechanism. A head tube 4 is arranged at the end of the front main beam tube 3;

[0012] The folding mechanism includes a folding joint 5 for connecting the front main beam tube 3 and the rear main beam tube 2, and a folding handle 6 for locking the folding joint 5;

[0013] The rear rack 10 is hinged to the rear main beam tube 2 through a rack rotating shaft 23.

[0014] Furthermore,

[0015] The rear shock absorber 20 is a single shock absorber or a shock absorber combination.

[0016] Furthermore,

[0017] The shock absorber combination includes two single shock absorbers. The lower ends of the two single shock absorbers are hinged to the mounting seat 19, and the two single shock absorbers are arranged front and back on the mounting seat 19; the upper ends of the two shock absorbers are respectively hinged to both ends of the connecting piece 22, and the middle of the connecting piece 22 is hinged to the extension part 21.

[0018] Furthermore,

[0019] The connecting piece 22 is a moon piece.

[0020] Furthermore,

[0021] The connecting piece 22 on each side of the electric folding bike is one or two.

[0022] Furthermore,

[0023] A support plate or a rack bridge piece 11 is arranged on the rear rack 10.

[0024] Furthermore,

[0025] A battery cavity is arranged at the rear side of the middle tube 1. The battery cavity is composed of an "L"-shaped partition plate and a battery fixing frame 7 which is welded to the middle tube 1 and is located at the rear side of the middle tube 1. The "L"-shaped partition plate is composed of a side plate 8 and a bottom plate 9 (welded).

[0026] Furthermore,

[0027] The side plate 8 and the bottom plate 9 are welded into an "L"-shaped partition plate.

[0028] An electric folding bike has the frame described above.

[0029] The beneficial effects of the present utility model are as follows:

[0030] The front shock absorber structure using the rear rack as a lever conducts shock absorption through the lever structure, which is different from the traditional structure and has good shock absorption effect with structural innovation; the front and rear shock absorbers can be interlocked, with the rear rack as the upper connecting rod and the rear flat fork as the lower connecting rod, and the shock absorption effect is better; the rear shock absorber of this model can adopt a single or multiple shock absorber structures, and different shock absorption effects can be achieved by adjusting the installation according to the situation. Description of the Drawings

[0031] Figure 1 It is the side view of the first embodiment of the present utility model;

[0032] Figure 2 It is the first perspective view of the three-dimensional view of the first embodiment of the present utility model;

[0033] Figure 3 It is the second perspective view of the three-dimensional view of the first embodiment of the present utility model;

[0034] Figure 4 It is the side view of the second embodiment of the present utility model;

[0035] Figure 5 It is the first perspective view of the three-dimensional view of the second embodiment of the present utility model;

[0036] Figure 6 It is the second perspective view of the three-dimensional view of the second embodiment of the present utility model;

[0037] In the figure, there are middle tube 1, rear main beam tube 2, front main beam tube 3, head tube 4, folding joint 5, folding handle 6, battery fixing frame 7, side plate 8, bottom plate 9, rear shelf 10, support plate or shelf bridge piece 11, upper rotating shaft 12, front shock absorber 13, lower rotating shaft 14, bottom bracket 15, fixed flat fork 16, flat fork shaft 17, movable flat fork 18, mounting seat 19, rear shock absorber 20, extension part 21, connecting piece (moon piece) 22, shelf rotating shaft 23.

[0038] Specific real-time mode

[0039] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0040] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0041] In the present utility model, unless otherwise clearly specified and defined, terms such as "arranged", "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection or a detachable connection; it may be a mechanical connection; it may be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0042] As shown in the attached drawings, the present utility model discloses an up-and-down double-lever shock-absorbing structure foldable frame for an electric bicycle and an electric folding bicycle adopting the frame, which reduces the influence brought by vibration during driving through a shock-absorbing mechanism.

[0043] It should be understood that when using the electric bicycle of the present utility model, when the road surface causes vibration to the electric bicycle during driving, due to the setting of the shock-absorbing mechanism, the vibration brought to the seat, the rear luggage rack and the main beam is absorbed.

[0044] It should be noted here that for non-electric bicycles and / or non-foldable bicycles, those skilled in the art or R & D personnel should be aware that the double-link shock-absorbing mechanism included in the present utility model can also be applied.

[0045] The present utility model discloses a frame of an electric folding bicycle with an up-and-down double-lever shock-absorbing structure, as Figure 1 , 4 shown, the frame of the electric folding bicycle has a middle tube 1 arranged in the middle, and this middle tube 1 serves as the main connecting part of the entire frame, dividing the frame of the electric folding bicycle into a front part and a rear part.

[0046] The frame of the electric folding bicycle of the present utility model has a shock-absorbing mechanism with the rear luggage rack as the upper link, the fixed flat fork and the movable flat fork as the lower links, and the front and rear shock absorbers can be linked.

[0047] A lock for locking the seat is arranged at the upper end of the middle tube 1, and adjusting the lock can adjust the height of the seat arranged at the upper end of the middle tube.

[0048] The front side of the middle tube 1 can be folded or is a folding structure. Specifically, as Figure 2 , 5 shown, the front side of the middle tube 1 is connected to the rear main beam tube 2, the rear main beam tube 2 is connected to the front main beam tube 3 through a folding mechanism, and a head tube 4 is arranged at the end of the front main beam tube 3. The folding mechanism includes a folding joint 5 for connecting the front main beam tube 3 and the rear main beam tube 2 and a folding handle 6 for locking the folding joint 5.

[0049] A rear rack 10 is provided at the rear side of the middle tube 1. The rear rack 10 is hinged to the rear main beam tube 2 at the front side of the middle tube 1 through a rack rotating shaft 23. The rear rack 10 can rotate around the rack rotating shaft 23. The front end of the rear rack 10 is located on both sides of the rear main beam tube 2, as Figure 3 , 6 shown. A support plate or a rack bridge piece 11 is provided on the rear rack 10.

[0050] As Figure 3 , 6 shown, the front end of the rear rack 10 is connected to the upper end of the front shock absorber 13 through an upper rotating shaft 12. The lower end of the front shock absorber 13 is hinged to a bottom bracket seat 15 fixed to the front side of the lower end of the middle tube 1 through a lower rotating shaft 14.

[0051] As Figure 2 , 4 shown, a battery chamber is provided at the rear side of the middle tube 1. The battery chamber is composed of an "L"-shaped partition plate and a battery fixing frame 7 which is welded to the middle tube 1 and is located at the rear side of the middle tube 1. The "L"-shaped partition plate is composed of a side plate 8 and a bottom plate 9 (welded). The side plate 8 and the bottom plate 9 are welded into an "L"-shaped partition plate.

[0052] A fixed flat fork 16 fixed to the middle tube 1 is provided under the bottom plate 9. The fixed flat fork 16 is located at the rear lower side of the middle tube 1. The rear end of the fixed flat fork 16 is hinged to a movable flat fork 18 through a flat fork shaft 17. The movable flat fork 18 is in a "U" shape.

[0053] Mounting seats 19 are welded at both ends of the movable flat fork 18. The mounting seats 19 are used to connect the rear wheel mechanism of the electric folding vehicle. The mounting seats 19 are hinged to the lower end of the rear shock absorber 20. The upper end of the rear shock absorber 20 is hinged to an extension part 21 which extends obliquely backward and downward of the rear rack 10.

[0054] The rear shock absorber 20 is a single shock absorber or a shock absorber combination. When the rear shock absorber 20 is a shock absorber combination, it includes two single shock absorbers. The lower ends of the two single shock absorbers are hinged to the mounting seats 19. The two single shock absorbers are arranged front and rear on the mounting seats 19. The upper ends of the two shock absorbers are respectively hinged to both ends of a connecting piece 22. The middle of the connecting piece 22 is hinged to the extension part 21. The connecting piece 22 on each side of the electric folding vehicle is one or two.

[0055] The present utility model also discloses an electric folding vehicle having the above-mentioned frame.

[0056] In the present utility model, optionally, the connecting rod piece is in a crescent shape (moon piece).

[0057] In the present utility model, optionally, the connecting rod piece is a rhombic quadrilateral.

[0058] In the present utility model, optionally, the connecting rod piece is a rectangle.

[0059] The beneficial effects of the present utility model are as follows:

[0060] 1. The front shock absorber structure using the rear luggage rack as a lever conducts shock absorption through the lever structure, which is different from the traditional structure and has good shock absorption effect due to structural innovation;

[0061] 2. The front and rear shock absorbers can be interlocked. Using the rear luggage rack as the upper connecting rod and the rear swing arm as the lower connecting rod, the shock absorption effect is better;

[0062] 3. The rear shock absorber of this vehicle model can adopt a single or multiple shock absorber structures, and different shock absorption effects can be achieved by adjusting the installation according to the situation.

[0063] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An electric folding bike frame with an upper and lower double lever shock absorption structure, characterized in that: The frame has a middle tube disposed in the middle, and a lock for locking the seat is provided at the upper end of the middle tube. The front side of the middle tube is foldable or of a folding structure; A rear rack is provided at the rear side of the middle tube. The rear rack is hinged to the foldable or folding structure at the front side of the middle tube through a rack rotating shaft. The front end of the rear rack is connected to the upper end of the front shock absorber through an upper rotating shaft. The lower end of the front shock absorber is hinged to a bottom bracket seat fixed to the front side of the lower end of the middle tube through a lower rotating shaft; A fixed flat fork is fixed to the rear side below the middle tube. The rear end of the fixed flat fork is hinged with a movable flat fork through a flat fork shaft. The movable flat fork is in a "U" shape, and mounting seats are welded at both ends thereof. The mounting seats are hinged to the lower end of the rear shock absorber, and the upper end of the rear shock absorber is hinged to an extension portion extending obliquely backward and downward of the rear rack.

2. The frame of an electric folding bicycle with an upper and lower double-lever shock absorption structure according to claim 1, characterized in that: The mounting seat is used to connect the rear wheel mechanism of the electric folding bicycle, The front side of the middle tube is connected to a rear main beam tube, and the rear main beam tube is connected to a front main beam tube through a folding mechanism. A head tube is provided at the end of the front main beam tube; The folding mechanism includes a folding joint for connecting the front main beam tube and the rear main beam tube, and a folding handle for locking the folding joint; The rear rack is hinged to the rear main beam tube through a rack rotating shaft.

3. The frame of an electric folding bicycle with an upper and lower double-lever shock absorption structure according to claim 2, characterized in that: The rear shock absorber is a single shock absorber or a shock absorber combination.

4. The frame of an electric folding bicycle with an upper and lower double-lever shock absorption structure according to claim 3, characterized in that: The shock absorber combination includes two single shock absorbers. The lower ends of the two single shock absorbers are hinged to the mounting seat, and the two single shock absorbers are arranged front and rear on the mounting seat; the upper ends of the two shock absorbers are respectively hinged to both ends of a connecting piece, and the middle of the connecting piece is hinged to the extension portion.

5. The frame of an electric folding bicycle with an upper and lower double-lever shock absorption structure according to claim 4, characterized in that: The connecting piece is a moon piece.

6. The frame of an electric folding bicycle with an upper and lower double-lever shock absorption structure according to claim 5, characterized in that: The connecting piece on each side of the electric folding bicycle is one or two.

7. The frame of an electric folding bicycle with an upper and lower double-lever shock absorption structure according to claim 6, characterized in that: A support plate or a rack bridge piece is provided on the rear rack.

8. The frame of an electric folding bicycle with an upper and lower double-lever shock absorption structure according to claim 7, characterized in that: A battery cavity is provided at the rear side of the middle tube. The battery cavity is composed of an "L"-shaped partition plate and a battery fixing frame welded to the middle tube and located at the rear side of the middle tube. The "L"-shaped partition plate is composed of a side plate and a bottom plate.

9. The frame of an electric folding bicycle with an upper and lower double-lever shock absorption structure according to claim 8, characterized in that: The side plate and the bottom plate are welded to form an "L"-shaped partition plate.

10. An electric folding bike, characterized in that: There is a frame as described in any one of claims 1-9.

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