Balancing structure for foldable electric bicycle

Abstract

The utility model discloses a balance structure for a foldable electric bicycle, which belongs to the technical field of electric bicycles and is characterized by comprising at least two auxiliary wheels which are rotatably arranged on a front bottom fork of a frame of the electric bicycle. The two auxiliary wheels are coaxially arranged and distributed on the two sides of a front wheel of the electric bicycle, the lowest positions of the outer diameter faces of the two auxiliary wheels are flush with the lowest position of the outer diameter face of the front wheel of the electric bicycle, the distances between the two auxiliary wheels and the front wheel of the electric bicycle are the same, and the two auxiliary wheels and the front wheel of the electric bicycle are distributed in a staggered mode. The balance structure can effectively improve the stability of the vehicle, enables the vehicle to have better road holding force, reduces the risk of rollover or out-of-control of the vehicle, enables the left side and the right side of the vehicle to be evenly stressed in the running process, can keep balance even when the vehicle accelerates, decelerates or bears lateral force, and improves the safety of the vehicle. On the premise that the diameter of the front wheel is small, the balance of the vehicle in the driving process can still be guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of electric bicycle technology, and specifically relates to a balance structure for foldable electric bicycles. Background Technology

[0002] Electric vehicles are vehicles that use batteries as auxiliary power and are based on ordinary bicycles, with the addition of motors, controllers, batteries, throttles, brake levers, and display systems. Currently, in order to make electric bicycles more convenient to carry, foldable electric bicycles have been developed.

[0003] Chinese Patent No. CN221273342U discloses a foldable electric bicycle frame, including a rear frame body. One end of the rear frame body is connected to a rear seat, and a driving / riding mechanism is connected to the top of the rear frame body. A restraint component is provided on the side wall of the driving / riding mechanism. A front frame body is provided at the end of the rear frame body away from the rear seat. A folding mechanism is provided between the front frame body and the rear frame body. A rainproof component is provided on the top of the front frame body and the rear frame body. A gripping mechanism is connected at the end of the front frame body away from the rear frame body.

[0004] The above technical solution has the following drawbacks: the rear wheel of the foldable electric bicycle acts as the drive wheel to provide power output, while the front wheel acts as the driven wheel and passively slides only by ground friction. In order to reduce the overall volume after folding, the diameter of the front wheel is smaller than that of the rear wheel. However, due to the smaller diameter of the front wheel, the contact area between the front wheel and the ground is relatively limited. When encountering uneven road conditions such as potholes or bumps, the front wheel has difficulty effectively crossing or buffering these obstacles, which hinders the vehicle's movement and may even cause the vehicle to lose balance, increasing the risk of the rider falling. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a balance structure for foldable electric bicycles. The technical problem to be solved by this invention is: how to ensure the balance of the vehicle during operation while the front wheel diameter is relatively small.

[0006] The above-mentioned technical objective of this utility model can be achieved through the following technical solution: a balance structure for a foldable electric bicycle, comprising at least two auxiliary wheels, both of which are rotatably mounted on the front fork of the electric bicycle frame, the two auxiliary wheels being coaxially arranged and distributed on both sides of the front wheel of the electric bicycle, the lowest point of the outer diameter surface of both auxiliary wheels being flush with the lowest point of the outer diameter surface of the front wheel of the electric bicycle, the distance between the two auxiliary wheels and the front wheel of the electric bicycle being the same, and the two auxiliary wheels being staggered from the front wheel of the electric bicycle.

[0007] In the aforementioned balancing structure for a foldable electric bicycle, the two auxiliary wheels are arranged in a triangular configuration with the front wheel of the electric bicycle.

[0008] In the aforementioned balancing structure for a foldable electric bicycle, mounting brackets are detachably connected to both sides of the front flat fork of the electric bicycle frame, and the two auxiliary wheels are rotatably connected to the corresponding mounting brackets.

[0009] In the aforementioned balance structure for a foldable electric bicycle, each of the two mounting brackets has a mounting hole at one end, and a bolt passes through the mounting hole. The front fork of the electric bicycle frame has a slotted hole, through which the bolt passes. A nut is threaded onto the bolt, and the bolt, in conjunction with the nut, secures the front fork of the electric bicycle frame to the mounting bracket.

[0010] In the aforementioned balance structure for a foldable electric bicycle, each of the two mounting brackets has a disassembly hole and a sliding hole at one end. The sliding hole connects the mounting hole and the disassembly hole, and the mounting hole is located directly below the disassembly hole. One bolt can enter the disassembly hole through the sliding hole, and one nut can pass through the disassembly hole.

[0011] In the aforementioned balancing structure for a foldable electric bicycle, a pivot is mounted at the other end of each of the two mounting brackets. The pivot passes through the auxiliary wheel and the two are rotatably engaged. A bearing is provided between the auxiliary wheel and the pivot.

[0012] In the aforementioned balance structure for a foldable electric bicycle, two nuts are threaded onto the shaft, and the two nuts cooperate to clamp the mounting bracket.

[0013] In the aforementioned balancing structure for a foldable electric bicycle, each of the two mounting frames is fixedly connected to a support rod 1, and the mounting frame and the corresponding support rod 1 form a triangular structure. Each of the two mounting frames is fixedly connected to a support rod 2, and the mounting frame and the corresponding support rod 2 form a triangular structure.

[0014] In summary, the beneficial effects of this utility model compared to the prior art are as follows:

[0015] Since the lowest point of the outer diameter surface of both auxiliary wheels is flush with the lowest point of the outer diameter surface of the front wheel of the electric bicycle, the two auxiliary wheels and the front wheel of the electric bicycle simultaneously contact the ground, thereby increasing the contact area with the ground. The two auxiliary wheels are coaxially arranged and distributed on both sides of the front wheel of the electric bicycle, with the same distance between them. This ensures that the force is evenly distributed on both sides of the vehicle during driving, maintaining balance even during acceleration, deceleration, or lateral forces. This achieves the goal of maintaining the balance of the vehicle during driving despite the small diameter of the front wheel. Furthermore, since the two auxiliary wheels are staggered from the front wheel, the support area formed by the two auxiliary wheels and the front wheel of the electric bicycle is effectively increased, thereby improving the stability of the vehicle and giving it better grip, reducing the risk of rollover or loss of control. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1;

[0017] Figure 2 This is a schematic diagram of the structure of Example 2;

[0018] Figure 3 This is another structural schematic diagram of Example 2;

[0019] Figure 4 for Figure 3 Enlarged view of part A;

[0020] Figure 5 This is a schematic diagram of the mounting bracket in Example 2.

[0021] Reference numerals in the attached diagram: 1. Auxiliary wheel; 2. Mounting bracket; 3. Mounting hole; 4. Bolt 1; 5. Nut 1; 6. Removal hole; 7. Sliding hole; 8. Rotating shaft; 9. Bearing; 10. Nut 2; 11. Support rod 1; 12. Support rod 2; 13. Strip hole. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] Example 1:

[0024] A balancing structure for foldable electric bicycles, such as Figure 1As shown, it includes at least two auxiliary wheels 1, both of which are rotatably mounted on the front horizontal fork of the electric bicycle frame. The two auxiliary wheels 1 are coaxially arranged and distributed on both sides of the front wheel of the electric bicycle. The lowest point of the outer diameter surface of the two auxiliary wheels 1 is flush with the lowest point of the outer diameter surface of the front wheel of the electric bicycle. The distance between the two auxiliary wheels 1 and the front wheel of the electric bicycle is the same, and the two auxiliary wheels 1 are offset from the front wheel of the electric bicycle.

[0025] It should be noted that, since the two auxiliary wheels 1 are coaxially arranged and distributed on both sides of the front wheel of the electric bicycle, the distance between the two auxiliary wheels 1 and the front wheel of the electric bicycle is the same, and the lowest point of the outer diameter surface of the two auxiliary wheels 1 is flush with the lowest point of the outer diameter surface of the front wheel of the electric bicycle. This allows the two auxiliary wheels 1 and the front wheel of the electric bicycle to contact the ground simultaneously, thereby increasing the contact area with the ground and making the force on both sides of the vehicle even during driving. Even when accelerating, decelerating or subjected to lateral forces, the vehicle can maintain balance, thus ensuring the balance of the vehicle during driving with a relatively small front wheel diameter.

[0026] It should be further explained that since the two auxiliary wheels 1 are offset from the front wheel of the electric bicycle, the support area formed by the two auxiliary wheels 1 and the front wheel of the electric bicycle is effectively increased, thereby improving the stability of the vehicle and giving the vehicle better grip, reducing the risk of the vehicle tipping over or losing control.

[0027] It should be further explained that because the two auxiliary wheels 1 and the front wheel of the electric bicycle are distributed in a triangular structure, they form a stable three-point support during vehicle operation. Due to the stability of the triangular structure, when the vehicle encounters bumps, sharp turns, or uneven road surfaces, the triangular distribution structure can more evenly distribute the external forces on the vehicle, making the center of gravity distribution of the vehicle more reasonable, further enhancing the vehicle's balance, reducing the possibility of the vehicle tilting or tipping over due to external forces, and providing riders with a safer and more reliable riding guarantee.

[0028] It should be noted that the distance between the auxiliary wheel 1 and the front wheel of the electric bicycle can be adjusted according to actual needs during manufacturing, and no specific limitation is made.

[0029] Example 2:

[0030] The difference between Example 2 and Example 1 is that, as Figures 2 to 5 As shown, the electric bicycle frame has mounting brackets 2 detachably connected to both sides of the front flat fork, and the two auxiliary wheels 1 are rotatably connected to the corresponding mounting brackets 2.

[0031] Specifically, each of the two mounting brackets 2 has a mounting hole 3 at one end, and a bolt 4 passes through the mounting hole 3. The front flat fork of the electric bicycle frame has a strip hole 13. The bolt 4 passes through the strip hole 13 and the mounting hole 3 in sequence. A nut 5 is threaded onto the bolt 4. The bolt 4 and the nut 5 together fix the front flat fork of the electric bicycle frame to the mounting bracket 2.

[0032] Each of the two mounting brackets 2 has a disassembly hole 6 and a sliding hole 7 at one end. The sliding hole 7 connects the mounting hole 3 and the disassembly hole 6, and the mounting hole 3 is located directly below the disassembly hole 6. Bolt 4 can enter the disassembly hole 6 through the sliding hole 7, and nut 5 can pass through the disassembly hole 6.

[0033] It should be noted that when installing the mounting bracket 2, bolt 4 is passed through the strip hole 13 and the mounting bracket 2 in sequence, and then nut 5 is threaded onto bolt 4 until nut 5 abuts against the mounting bracket 2. When disassembling the mounting bracket 2, simply rotate nut 5 to move it away from the mounting bracket 2, and then move the mounting bracket 2 so that bolt 4 enters the disassembly hole 6 through the sliding hole 7. At this time, nut 5 is aligned with the disassembly hole 6. Then, move the mounting bracket 2 along the axis of the disassembly hole 6. At this time, nut 5 passes directly through the disassembly hole 6. This simplifies the disassembly and assembly process of the mounting bracket 2 and effectively improves the efficiency of disassembly and assembly of the mounting bracket 2.

[0034] The other end of each of the two mounting brackets 2 is equipped with a rotating shaft 8, which passes through the auxiliary wheel 1 and the two rotate in coordination. A bearing 9 is provided between the auxiliary wheel 1 and the rotating shaft 8.

[0035] Two nuts 10 are threaded onto the rotating shaft 8. The two nuts 10 work together to clamp the mounting bracket 2, thereby achieving a stable connection between the rotating shaft 8 and the mounting bracket 2.

[0036] Each of the two mounting brackets 2 is fixedly connected to a support rod 11. The mounting bracket 2 and the corresponding support rod 11 form a triangular structure. Each of the two mounting brackets 2 is fixedly connected to a support rod 22. The mounting bracket 2 and the corresponding support rod 22 form a triangular structure, thereby effectively ensuring the strength and stability of the mounting bracket 2 structure.

[0037] The specific embodiments described herein are merely illustrative examples of the spirit of this utility model; those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A balancing structure for a foldable electric bicycle, characterized by: The utility model provides an electric bicycle auxiliary wheel, including at least two auxiliary wheels (1), two the auxiliary wheel (1) are rotationally arranged on the front fork of electric bicycle frame, two the auxiliary wheel (1) coaxial arrangement and distribute in electric bicycle front wheel both sides, two the auxiliary wheel (1) the outer diameter surface lowest place is even with electric bicycle front wheel's outer diameter surface lowest place, two the auxiliary wheel (1) with electric bicycle front wheel between the spacing is same, two the auxiliary wheel (1) are distributed with the front wheel of electric bicycle staggered.

2. A balancing structure for a foldable electric bicycle according to claim 1, characterized in that: Two the auxiliary wheel (1) with electric bicycle's front wheel is triangular structure distribution.

3. A balancing structure for a foldable electric bicycle according to any one of claims 1 or 2, characterized in that: The both sides of the front fork of the electric bicycle frame are detachably connected with mounting racks (2), and the two auxiliary wheels (1) are rotatably connected to the corresponding mounting racks (2) respectively.

4. A balancing structure for a foldable electric bicycle according to claim 3, characterized in that: One end of the two mounting racks (2) is provided with a mounting hole (3), a bolt (4) is arranged in the mounting hole (3), a strip-shaped hole (13) is formed in the front fork of the electric bicycle frame, the bolt (4) passes through the strip-shaped hole (13), a nut (5) is threadedly connected to the bolt (4), and the bolt (4) and the nut (5) are used to fix the front fork of the electric bicycle frame and the mounting rack (2).

5. A balancing structure for a foldable electric bicycle according to claim 4, characterized in that: One end of the two mounting racks (2) is provided with a dismounting hole (6) and a sliding hole (7), the sliding hole (7) is in communication with the mounting hole (3) and the dismounting hole (6), the mounting hole (3) is located directly below the dismounting hole (6), the bolt (4) can enter the dismounting hole (6) through the sliding hole (7), and the nut (5) can pass through the dismounting hole (6).

6. A balancing structure for a foldable electric bicycle according to claim 5, characterized in that: The other end of the two mounting racks (2) is provided with a rotating shaft (8), the rotating shaft (8) passes through the auxiliary wheel (1) and is rotatably connected to the auxiliary wheel (1), and a bearing (9) is arranged between the auxiliary wheel (1) and the rotating shaft (8).

7. A balancing structure for a foldable electric bicycle according to claim 6, characterized in that: Two nuts (10) are threadedly connected to the rotating shaft (8), and the two nuts (10) are used to clamp the mounting rack (2).

8. A balancing structure for a foldable electric bicycle according to claim 3, characterized in that: The two mounting racks (2) are fixedly connected with a supporting rod (11), the mounting rack (2) and the corresponding supporting rod (11) form a triangular structure, the two mounting racks (2) are fixedly connected with a supporting rod (12), and the mounting rack (2) and the corresponding supporting rod (12) form a triangular structure.

Images