Gear transmission system with lever forcing function

Abstract

The invention relates to the technical field of mechanical transmission, and particularly discloses a lever stress application gear transmission system which comprises a frame main body, pedals are rotationally connected to the two sides of the frame main body and connected through a connecting rod, and the connecting rod is rotationally inserted into the inner wall of the frame main body; the surface of the connecting rod is fixedly connected with a transmission gear; through the arrangement of the transmission gear, the gear ring, the flywheel, the smooth-surface roller and the tooth-surface roller, during use, the diameter of the gear ring serves as a lever, the joint of the tooth-surface roller and the gear ring serves as a fulcrum of the lever, and a lever stress application condition is formed, so that torque generated when the pedal transmission gear acts is transferred to the flywheel through the gear ring; however, the torque transmitted to the flywheel is multiplied according to the lever principle, then physical output of a rider is remarkably reduced, efficient power transmission is achieved, the physical output of the rider is remarkably reduced through the lever principle, and an energy-saving and efficient gear transmission system is formed.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical transmission, and particularly relates to a gear transmission system with lever force addition. Background Art

[0002] As an important part of the mechanical transmission field, the gear transmission system is widely used in various mechanical equipment. Especially in transportation tools such as bicycles and electric bicycles, the performance of the gear transmission system directly affects the transmission efficiency and service life of the equipment. Traditional gear transmission systems usually adopt chain drive or direct gear meshing. Although the chain drive has the advantages of simple structure and low cost, it has problems such as complex maintenance, being easily affected by the environment (such as dust, rain, etc.), and large energy loss during the transmission process. In recent years, with the continuous development of mechanical transmission technology, the gear transmission system has gradually developed towards the direction of high efficiency, energy saving, and low maintenance cost.

[0003] The gear transmission systems in the prior art have deficiencies in terms of transmission efficiency and use convenience. First of all, when traditional gear transmission systems transmit torque, they usually rely on direct gear meshing. Although power transmission can be achieved, the lever principle cannot be effectively utilized to amplify the torque, resulting in the rider needing to apply a relatively large pedaling force when climbing slopes or accelerating, increasing physical exertion. Secondly, the protective design of existing gear transmission systems is relatively weak. Especially in complex environments (such as mountain biking or riding in the rain), the gears and transmission components are easily eroded by dust, sediment, and rain, leading to a decrease in transmission efficiency or even system failure. In addition, the maintenance cost of traditional gear transmission systems is relatively high. Especially in application scenarios with frequent starts, stops, and speed changes, the wear speed of gears and chains accelerates, further increasing the usage cost and resulting in poor use effects of the device. Therefore, it is necessary for the staff to improve it. Summary of the Invention

[0004] The purpose of the present invention is to provide a gear transmission system with lever force addition to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A gear transmission system with lever force addition, comprising:

[0007] A frame main body;

[0008] Pedals are rotatably connected to both sides of the frame main body. The two pedals are connected by a connecting rod, and the connecting rod is rotatably inserted into the inner wall of the frame main body. A transmission gear is fixedly connected to the surface of the connecting rod;

[0009] The surface of the transmission gear is meshed and connected with a gear ring. One side of the surface of the gear ring is meshed and connected with a flywheel. The inner side of the gear ring is rotatably connected with a smooth roller. The other side of the surface of the gear ring is meshed and connected with a toothed roller. One side of the flywheel is fixedly connected with a rear wheel, and both sides of the rear wheel are rotatably connected to one side of the frame body.

[0010] Preferably, protective sleeve boxes are sleeved on the surfaces of the transmission gear, the gear ring, the flywheel, the smooth roller and the toothed roller, and the back of the protective sleeve box is fixedly connected to the surface of the frame body. A plurality of rotating shafts are rotatably connected to the inner wall of the protective sleeve box, and the surfaces of the rotating shafts are arranged on the inner wall of the gear ring without overlapping with the inner wall of the gear ring. Limiting plates are fixedly connected to both sides of the surface of the rotating shaft, and the two limiting plates are arranged on both sides of the gear ring. A protective cover is lapped on the surface of the protective sleeve box.

[0011] Preferably, fixing brackets are fixedly connected to the surface of the frame body, and one side of each fixing bracket is rotatably connected to the surfaces of the smooth roller and the toothed roller. The surface of the fixing bracket penetrates and is inserted into the surface of the protective cover.

[0012] Preferably, a front wheel is rotatably connected to the inner wall of the frame body. A seat cushion is fixedly connected to one side of the top of the frame body. A headstock is fixedly connected to the other side of the top of the frame body.

[0013] Preferably, the material of the frame body is high-strength aluminum alloy, and an anti-slip pad is arranged on the surface of the pedal.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) Through the arrangement of the transmission gear, the gear ring, the flywheel, the smooth roller and the toothed roller, during use, the diameter of the gear ring serves as a lever, and the joint of the toothed roller and the gear ring serves as the fulcrum of the lever, forming the condition of lever force addition. The torque of the rider pedaling the transmission gear to do work is transferred to the flywheel through the gear ring. Although the transmission speed remains unchanged, the torque transmitted to the flywheel increases exponentially according to the lever principle, thereby significantly reducing the physical consumption of the rider, achieving efficient power transmission, and also significantly reducing the physical consumption of the rider through the lever principle, forming an energy-saving and efficient gear transmission system.

[0016] (2) Through the settings of the protective housing, rotating shaft, protective cover, fixed bracket, and front wheel, during use, the protective housing, as the main protection device of the transmission system, is sleeved outside the transmission gear, gear ring, flywheel, smooth roller, and toothed roller, effectively preventing the intrusion of dust, impurities, and moisture, extending the service life of the transmission components, and reducing the maintenance frequency at the same time. The multiple rotating shafts arranged on the inner wall of the protective housing are on the inner wall of the gear ring. Although they do not support the gear ring, it is necessary to ensure that the gear ring has a certain displacement effect during movement, enabling the gear ring to exhibit the role of a fulcrum and ensuring that the working process of the gear ring with lever-assisted force is not affected. Moreover, limit plates are arranged on both sides of the surface of the rotating shaft, and the limit plates can prevent the gear ring from dislocating. The protective cover overlaps with the surface of the protective housing to further enhance the protection effect, and through the sealing design, it prevents the external environment from eroding the internal transmission components. The fixed bracket is fixed on the surface of the vehicle frame main body, and one side of it is rotatably connected to the surfaces of the smooth roller and the toothed roller, playing a role in supporting and fixing the roller, ensuring that the roller maintains a stable position and angle during transmission, and avoiding deviation or wear caused by uneven force. The fixed bracket also penetrates and is inserted into the surface of the protective cover, enhancing the rigidity and stability of the overall structure. Thus, it not only provides comprehensive protection for the transmission system but also enhances the stability and durability of the system, ensuring the efficient operation of the bicycle in complex environments, while improving the safety and comfort of riding, making the entire gear transmission system with lever-assisted force more reliable and efficient in practical applications. Description of the Drawings

[0017] Figure 1 One of the three-dimensional views of the present invention;

[0018] Figure 2 Another three-dimensional view of the present invention;

[0019] Figure 3 The third three-dimensional view of the present invention;

[0020] Figure 4 The three-dimensional view of the protective housing of the present invention;

[0021] Figure 5 The three-dimensional view of the gear ring of the present invention;

[0022] In the figure: 1. Vehicle frame main body; 2. Pedal; 3. Connecting rod; 4. Transmission gear; 5. Gear ring; 6. Flywheel; 7. Smooth roller; 8. Toothed roller; 9. Rear wheel; 10. Protective housing; 11. Rotating shaft; 12. Protective cover; 13. Fixed bracket; 14. Front wheel; 15. Seat cushion; 16. Front end of the vehicle. Detailed Description of the Invention

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1:

[0025] Please refer to Figures 1 to 5 As shown in the figure, a gear transmission system with lever force augmentation includes: a frame main body 1;

[0026] On both sides of the frame main body 1, pedals 2 are rotatably connected. The two pedals 2 are connected by a connecting rod 3, and the connecting rod 3 is rotatably inserted into the inner wall of the frame main body 1. A transmission gear 4 is fixedly connected to the surface of the connecting rod 3;

[0027] The surface of the transmission gear 4 is meshed with a toothed ring 5. One side of the surface of the toothed ring 5 is meshed with a flywheel 6. A smooth roller 7 is rotatably connected to the inner side of the toothed ring 5. The other side of the surface of the toothed ring 5 is meshed with a toothed surface roller 8. One side of the flywheel 6 is fixedly connected to a rear wheel 9, and both sides of the rear wheel 9 are rotatably connected to one side of the frame main body 1.

[0028] During use, the frame main body 1 serves as the support frame of the entire system. The pedals 2 rotatably connected on both sides are linked through the connecting rod 3. The transmission gear 4 fixedly connected to the connecting rod 3 meshes with the toothed ring 5, forming the core part of power transmission. The toothed ring 5 not only meshes with the transmission gear 4, but also meshes with the flywheel 6 on one side of its surface and the toothed surface roller 8 on the other side. At the same time, the smooth roller 7 rotatably connected to the inner side plays a role in supporting and stabilizing the toothed ring 5. The flywheel 6 is fixedly connected to the rear wheel 9, transmitting power to the rear wheel 9 to drive the bicycle forward. The diameter of the toothed ring 5 serves as the lever, and the joint of the toothed surface roller 8 and the toothed ring 5 serves as the fulcrum of the lever, forming the condition of lever force augmentation. Thus, the torque of the rider doing work on the transmission gear 4 is transferred to the flywheel 6 through the toothed ring 5. Although the transmission speed remains unchanged, the torque transmitted to the flywheel 6 increases multiplicatively according to the lever principle, thereby significantly reducing the physical exertion of the rider.

[0029] In addition, the gear transmission system with lever force augmentation is not limited to the bicycle field. It can be applied to many types of equipment to reduce the energy consumption of equipment doing work and improve the effect of equipment doing work. Whether it is industrial machinery, transportation vehicles or other equipment that requires a transmission system, the lever force augmentation principle of this device can be added to them and is protected at the same time.

[0030] Embodiment 2:

[0031] Please refer to Figures 1 to 5As shown in the figure, a protective sleeve box 10 is sleeved on the surfaces of the transmission gear 4, the gear ring 5, the flywheel 6, the smooth roller 7 and the toothed roller 8, and the back surface of the protective sleeve box 10 is fixedly connected to the surface of the vehicle frame main body 1. A plurality of rotating shafts 11 are rotatably connected to the inner wall of the protective sleeve box 10, and the surfaces of the rotating shafts 11 are arranged on the inner wall of the gear ring 5 without overlapping with the inner wall of the gear ring 5. Limiting plates are fixedly connected to both sides of the surface of the rotating shaft 11, and the two limiting plates are arranged on both sides of the gear ring 5. A protective cover 12 is lapped on the surface of the protective sleeve box 10. A fixed bracket 13 is fixedly connected to the surface of the vehicle frame main body 1, and one side of the fixed bracket 13 is rotatably connected to the surfaces of the smooth roller 7 and the toothed roller 8. The surface of the fixed bracket 13 penetrates and is inserted into the surface of the protective cover 12. A front wheel 14 is rotatably connected to the inner wall of the vehicle frame main body 1. A seat cushion 15 is fixedly connected to one side of the top of the vehicle frame main body 1, and a vehicle head 16 is fixedly connected to the other side of the top of the vehicle frame main body 1. The material of the vehicle frame main body 1 is high-strength aluminum alloy, and an anti-slip pad is arranged on the surface of the pedal 2.

[0032] During use, the protective sleeve box 10 serves as the main protection device for the transmission system and is sleeved outside the transmission gear 4, the gear ring 5, the flywheel 6, the smooth roller 7 and the toothed roller 8, effectively preventing the intrusion of dust, impurities and moisture, extending the service life of the transmission components, and at the same time reducing the maintenance frequency. The multiple rotating shafts 11 arranged on the inner wall of the protective sleeve box 10 are on the inner wall of the gear ring 5. Although they do not support the gear ring 5, it is necessary to ensure that the gear ring 5 has a certain displacement effect during movement, so that the gear ring 5 shows the role of a fulcrum, and the working process of the gear ring 5 with lever force addition is not affected. Limiting plates are arranged on both sides of the surface of the rotating shaft 11, and the limiting plates can prevent the gear ring from being displaced. The protective cover 12 is lapped on the surface of the protective sleeve box 10, further enhancing the protection effect and preventing the erosion of the internal transmission components by the external environment through a sealing design. The fixed bracket 13 is fixed on the surface of the vehicle frame main body 1, and one side of it is rotatably connected to the surfaces of the smooth roller 7 and the toothed roller 8, playing a role in supporting and fixing the rollers, ensuring that the rollers maintain a stable position and angle during transmission, and avoiding deviation or wear caused by uneven force. The fixed bracket 13 also penetrates and is inserted into the surface of the protective cover 12, enhancing the rigidity and stability of the overall structure. The front wheel 14 is rotatably connected to the inner wall of the vehicle frame main body 1 and together with the rear wheel 9 constitutes the driving system of the bicycle. The flexible steering of the front wheel 14 and the power drive of the rear wheel 9 are combined to ensure the balance and controllability of the bicycle during driving.

[0033] Embodiment 3:

[0034] Please refer to Figures 1 to 5As shown, in the urban commuting scenario, cyclists usually need to start, stop, and shift gears frequently. The traditional chain drive system is prone to chain dropping or wear during frequent gear shifting, and the maintenance cost is relatively high. This device replaces the traditional chain drive with a gear drive system. By using the meshing of the gear ring 5 with the drive gear 4 and the flywheel 6, it realizes a more stable and efficient power transmission, which is particularly suitable for long-distance cycling and frequent start-stop requirements in urban commuting.

[0035] Starting stage: The cyclist sits on the saddle 15 and pedals the pedals 2 with both feet. The pedals 2 drive the drive gear 4 to rotate through the connecting rod 3. The drive gear 4 meshes with the gear ring 5, transmitting the pedaling force to the gear ring 5. The gear ring 5 meshes with the flywheel 6 through the tooth surface roller 8 on its surface, transmitting the power to the rear wheel 9 and driving the bicycle to start moving forward.

[0036] Steady riding stage: During steady riding, the gear ring 5 acts as a lever, and the joint of the tooth surface roller 8 and the gear ring 5 serves as the fulcrum, forming the condition for lever force amplification. The cyclist only needs to apply a relatively small pedaling force, and through the lever principle, a larger torque can be generated to drive the rear wheel 9 to rotate efficiently. The smooth surface roller 7 plays a supporting role inside the gear ring 5. Multiple rotating shafts 11 arranged on the inner wall of the protective sleeve box 10 are on the inner wall of the gear ring 5. Although they do not support the gear ring 5, they need to ensure that the gear ring 5 has a certain displacement effect during movement, enabling the gear ring 5 to exhibit the role of the fulcrum and ensuring that the work process of the gear ring 5 with lever force amplification is not affected. And both sides of the surface of the rotating shaft 11 are provided with limit plates, which can prevent the gear ring from being displaced.

[0037] Gear shifting and climbing stage: When the cyclist encounters an uphill or needs to accelerate, the design of lever force amplification enables the pedaling force to be more efficiently converted into driving force. The meshing of the gear ring 5 and the flywheel 6 transmits a larger torque, helping the cyclist easily cope with the climbing or acceleration requirements. The fixed bracket 13 ensures that the smooth surface roller 7 and the tooth surface roller 8 remain stable when the force increases, avoiding deviation or slipping of the drive system.

[0038] Frequent start-stop stage: In urban traffic, cyclists need to start and stop frequently. The design of the protective sleeve box 10 and the protective cover 12 effectively prevents the drive system from being eroded by dust, rain, etc., ensuring that the system still operates efficiently during frequent start-stop. The rotating shaft 11 supports the rotation of the gear ring 5, ensuring that the drive system can respond quickly every time it starts and reducing energy loss.

[0039] In the urban commuting scenario, this device significantly improves the efficiency and comfort of cycling through a gear drive system with lever force amplification. The cyclist only needs to apply a relatively small pedaling force, and through the lever principle, a larger driving force can be generated to easily cope with requirements such as frequent start-stop, climbing, and acceleration. The protective sleeve box 10, the rotating shaft 11, the protective cover 12, and the fixed bracket 13 ensure the stability and durability of the drive system and reduce the maintenance cost.

[0040] Working principle: Power input stage: The rider pedals the pedal 2 with both feet, and the pedal 2 drives the connecting rod 3 to rotate. The transmission gear 4 fixedly connected to the connecting rod 3 rotates accordingly. The transmission gear 4 meshes with the gear ring 5, transmitting the pedaling force of the rider to the gear ring 5. At this time, the gear ring 5 starts to rotate, forming the first stage of power transmission.

[0041] Lever force amplification stage: The gear ring 5 is the core component of the lever. Its diameter is equivalent to the length of the lever. The joint of the tooth surface roller 8 and the gear ring 5 is the fulcrum of the lever. The joint of the gear ring 5 and the flywheel 6 is the resistance arm, and the joint of the gear ring 5 and the transmission gear 4 is the power arm. According to the lever principle, the length of the power arm is greater than the length of the resistance arm. Therefore, the pedaling force applied by the rider is amplified through the lever action, and the torque transmitted to the flywheel 6 increases significantly. This enables the rider to generate a larger driving force with a smaller pedaling force, thereby reducing physical exertion.

[0042] Power output stage: The gear ring 5 meshes with the flywheel 6 through the tooth surface roller 8 on its surface, transmitting the amplified torque to the flywheel 6. The flywheel 6 is fixedly connected to the rear wheel 9, and the rotation of the flywheel 6 directly drives the rear wheel 9 to rotate, pushing the bicycle forward. The smooth surface roller 7 plays a supporting role inside the gear ring 5, ensuring that the gear ring 5 remains stable during rotation, reducing vibration and noise, and enhancing the comfort of riding.

[0043] Stability and protection mechanism: The protective sleeve box 10 is sleeved outside the transmission gear 4, gear ring 5, flywheel 6, smooth surface roller 7, and tooth surface roller 8, effectively preventing the transmission system from being eroded by external environments such as dust and rain. The protective cover 12 overlaps with the protective sleeve box 10, further enhancing the protection effect. Multiple rotating shafts 11 are arranged on the inner wall of the protective sleeve box 10 on the inner wall of the gear ring 5. Although they do not support the gear ring 5, they are required to ensure that the gear ring 5 has a certain displacement effect during movement, enabling the gear ring 5 to exhibit the role of a fulcrum and ensuring that the work process of the gear ring 5 with lever force amplification is not affected. Limiting plates are arranged on both sides of the surface of the rotating shaft 11, which can prevent the gear ring from dislocating. The fixed bracket 13 is fixed to the surface of the frame main body 1, supporting the smooth surface roller 7 and the tooth surface roller 8, ensuring that the rollers maintain a stable position and angle during transmission, and avoiding offset or wear caused by uneven force.

[0044] Overall coordinated action: The entire system realizes efficient and stable power transmission through the coordinated action of structures such as the frame main body 1, pedal 2, connecting rod 3, transmission gear 4, gear ring 5, flywheel 6, smooth surface roller 7, tooth surface roller 8, rear wheel 9, protective sleeve box 10, rotating shaft 11, protective cover 12, and fixed bracket 13. The design of lever force amplification significantly improves the transmission efficiency, reduces the physical exertion of the rider. At the same time, the protective design enhances the durability and stability of the system, ensuring that the bicycle can operate efficiently in various environments.

[0045] All the standard parts used in the present invention can be purchased from the market. The special-shaped parts can be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0046] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The meaning of "a plurality" is two or more unless otherwise specifically defined.

[0047] In the present invention, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0049] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0050] In the accompanying drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0051] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they 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 invention shall be included within the protection scope of the present invention.

Claims

1. A lever-assisted gear transmission system, characterized in that: include: Frame body (1); Pedals (2) are rotatably connected to both sides of the frame body (1), the two pedals (2) are connected via a connecting rod (3), and the connecting rod (3) is rotatably plugged into the inner wall of the frame body (1), and a transmission gear (4) is fixedly connected to the surface of the connecting rod (3); The surface of the transmission gear (4) is meshedly connected with a gear ring (5), one side of the surface of the gear ring (5) is meshedly connected with a flywheel (6), the inner side of the gear ring (5) is rotatably connected with a smooth roller (7), the other side of the surface of the gear ring (5) is meshedly connected with a toothed roller (8), one side of the flywheel (6) is fixedly connected with a rear wheel (9), and both sides of the rear wheel (9) are rotatably connected to one side of the frame body (1).

2. A lever-assisted gear transmission system according to claim 1, characterized in that: The surfaces of the transmission gear (4), the gear ring (5), the flywheel (6), the smooth roller (7) and the toothed roller (8) are sleeved with a protective sleeve (10), and the back side of the protective sleeve (10) is fixedly connected to the surface of the frame body (1); the inner wall of the protective sleeve (10) is rotatably connected to a plurality of rotating shafts (11), and the surfaces of the rotating shafts (11) are arranged on the inner wall of the gear ring (5) and do not overlap with the inner wall of the gear ring (5); both sides of the surface of the rotating shaft (11) are fixedly connected to limit plates, and two limit plates are arranged on both sides of the gear ring (5); and the surface of the protective sleeve (10) is overlapped with a protective cover (12).

3. A lever-assisted gear transmission system according to claim 1, characterized in that: A fixing bracket (13) is fixedly connected to the surface of the frame body (1), and one side of the fixing bracket (13) is rotatably connected to the surfaces of the smooth roller (7) and the toothed roller (8), and the surface of the fixing bracket (13) penetrates and is plugged into the surface of the protective cover (12).

4. A lever-assisted gear transmission system according to claim 1, characterized in that: The inner wall of the frame body (1) is rotatably connected to a front wheel (14), one side of the top of the frame body (1) is fixedly connected to a seat cushion (15), and the other side of the top of the frame body (1) is fixedly connected to a vehicle head (16).

5. The lever-assisted gear transmission system according to claim 1, characterized in that: The material of the frame body (1) is a high-strength aluminum alloy, and the surface of the pedal (2) is provided with an anti-slip pad.

Images