All-terrain vehicle

Abstract

The all-terrain vehicle comprises a vehicle frame, a vehicle body covering part, a suspension system, a walking system and a power assembly, the power assembly comprises an engine, the engine comprises an air cylinder and a plurality of cylinder heads, and the cylinder heads are arranged on the air cylinder; a plane which is perpendicular to the height direction of the frame and passes through a contact point of the walking system and the ground is defined as a reference surface, the orthographic projection of the left pedal sawteeth in the reference surface is the projection of the left pedal sawteeth, the orthographic projection of the right pedal sawteeth in the reference surface is the projection of the right pedal sawteeth, and the orthographic projection of the left pedal sawteeth in the reference surface is the projection of the right pedal sawteeth; the distance between the rightmost side of the projection of the left pedal sawteeth and the rotation center of the driving wheel ranges from 0 mm to 420 mm. The distance between the leftmost side of the projection of the right pedal sawteeth and the rotating center of the magneto ranges from 0 mm to 420 mm. Through the arrangement, the driving experience of the all-terrain vehicle is good.

Description

Technical Field

[0001] This application relates to a vehicle, specifically an all-terrain vehicle. Background Technology

[0002] With the rapid development of vehicle technology, all-terrain vehicles (ATVs) are becoming increasingly popular among consumers. ATVs operate in various terrains including deserts, jungles, mudflats, riverbeds, and wastelands. Due to the complex terrain, ATVs require strong power output during operation. This power demand directly leads to an increase in the number of cylinders, power output, and heat generation in ATVs.

[0003] Furthermore, in existing technology, the engine cylinder head is positioned rearward, which causes the parts of the rider's body that are close to the driver's body, especially the area near the legs, to be hotter, thus reducing the driver's riding experience. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this application is to provide an all-terrain vehicle with a superior driving experience.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An all-terrain vehicle includes: a frame, body panels, a suspension system, a running gear, and a powertrain; the body panels are supported by the frame; the suspension system is supported by the frame; the running gear is at least partially connected to the frame via the suspension system; foot pedals include left and right foot pedal serrations; the powertrain includes an engine, a magneto, and a drive wheel, the engine driving the running gear, the magneto being located on one side of the all-terrain vehicle, and the drive wheel being located on the other side of the all-terrain vehicle; the engine includes cylinders, two cylinder heads arranged side-by-side on the cylinders, and a drive wheel mounted on... The cylinder head is located on the cylinder head; the cylinder head is positioned facing the rear of the all-terrain vehicle; a plane perpendicular to the height direction of the frame and passing through the contact point between the running system and the ground is defined as the reference plane. The orthographic projection of the left foot pedal sawtooth in the reference plane is the left foot pedal sawtooth projection, and the orthographic projection of the right foot pedal sawtooth in the reference plane is the right foot pedal sawtooth projection. Along the length direction of the frame, the distance between the rightmost side of the left foot pedal sawtooth projection and the rotation center of the drive wheel ranges from 0 to 420 mm; the distance between the leftmost side of the right foot pedal sawtooth projection and the rotation center of the magneto ranges from 0 mm to 420 mm.

[0007] Furthermore, the cylinder includes a left cylinder and a right cylinder, which are arranged side by side and substantially parallel along the width direction of the frame.

[0008] Furthermore, along the length of the frame, the distance between the rightmost side of the left foot pedal sawtooth projection and the rotation center of the drive wheel ranges from 40mm to 380mm; the distance between the leftmost side of the right foot pedal sawtooth projection and the rotation center of the magneto ranges from 40mm to 380mm.

[0009] Furthermore, along the length of the frame, the distance between the rightmost side of the left foot pedal sawtooth projection and the rotation center of the drive wheel ranges from 60mm to 340mm; the distance between the leftmost side of the right foot pedal sawtooth projection and the rotation center of the magneto ranges from 60mm to 340mm.

[0010] Furthermore, the distance between the rightmost side of the left foot pedal sawtooth projection and the leftmost side of the drive wheel ranges from 80mm to 300mm, and the distance between the rightmost side of the right foot pedal sawtooth projection and the rightmost side of the magneto ranges from 80mm to 300mm.

[0011] Furthermore, along the width direction of the frame, the distance between the rightmost edge of the left foot pedal sawtooth projection and the leftmost edge of the drive wheel is greater than 0 to 150 mm, and the distance between the rightmost edge of the right foot pedal sawtooth projection and the rightmost edge of the magneto is greater than 0 to 150 mm.

[0012] Furthermore, along the width direction of the frame, the distance between the rightmost side of the left foot pedal sawtooth projection and the leftmost side of the drive wheel ranges from 40mm to 110mm, and the distance between the rightmost side of the right foot pedal sawtooth projection and the rightmost side of the magneto ranges from 40mm to 110mm.

[0013] Furthermore, along the width direction of the frame, the distance between the rightmost side of the left foot pedal sawtooth projection and the leftmost side of the drive wheel ranges from 60mm to 90mm, and the distance between the rightmost side of the right foot pedal sawtooth projection and the rightmost side of the magneto ranges from 60mm to 90mm.

[0014] Furthermore, a plane perpendicular to the width direction of the vehicle frame and passing through the midpoint of the width of the all-terrain vehicle is defined as the longitudinal center plane of the all-terrain vehicle; the ratio of the distance between the leftmost side of the engine and the longitudinal center plane to the distance between the rightmost side of the engine and the longitudinal center plane ranges from 0.6 to 1.3.

[0015] Furthermore, the ratio of the distance between the leftmost side of the engine and the longitudinal center plane to the distance between the rightmost side of the engine and the longitudinal center plane ranges from 0.8 to 1.

[0016] The above setup defines a reference plane perpendicular to the height of the frame and passing through the contact point between the running system and the ground. The orthographic projection of the left foot pedal sawtooth onto this reference plane is the left foot pedal sawtooth projection, and the orthographic projection of the right foot pedal sawtooth onto this reference plane is the right foot pedal sawtooth projection. Along the length of the frame, the distance between the rightmost side of the left foot pedal sawtooth projection and the rotation center of the drive wheel ranges from 0 to 420 mm; the distance between the leftmost side of the right foot pedal sawtooth projection and the rotation center of the magneto ranges from 0 mm to 420 mm. By rationally arranging the foot pedals and engine, an all-terrain vehicle with a good driving experience is provided. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the all-terrain vehicle provided in the embodiments of this application;

[0018] Figure 2 This is a top view of the internal structure of the all-terrain vehicle provided in the embodiments of this application;

[0019] Figure 3 This is a left view of the internal structure of the all-terrain vehicle provided in the embodiment of this application;

[0020] Figure 4 This is an exploded view of the engine of the all-terrain vehicle provided in the embodiments of this application;

[0021] Figure 5 This is a top view of the assembly of the upper main beam and engine of the all-terrain vehicle provided in the embodiments of this application;

[0022] Figure 6 This is a top view of the internal structure of the all-terrain vehicle provided in this application embodiment, excluding the vehicle frame;

[0023] Figure 7 This is a cross-sectional view of the engine of the all-terrain vehicle provided in the embodiments of this application;

[0024] Figure 8 This is a left view of the assembly of the engine, frame and running system of the all-terrain vehicle provided in the embodiments of this application. Detailed Implementation

[0025] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention. Any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0026] like Figures 1 to 3As shown, this application provides an all-terrain vehicle 100, which includes a frame 11, a body panel 12, a running gear 13, a suspension system 14, a powertrain 15, a transmission assembly 16, a fuel assembly 17, a seat assembly 19, a steering assembly 20, an electrical assembly 22, and a footrest assembly 27. The frame 11 forms the basic structure of the all-terrain vehicle 100. The body panel 12 is at least partially mounted on the frame 11 and surrounds the frame 11 to form a receiving space 115. The powertrain 15 includes an engine 151, which is at least partially disposed within the receiving space 115. The suspension system 14 is at least partially connected to the frame 11, and the running gear 13 is connected to the frame 11 via the suspension system 14. The transmission assembly 16 is also drive-connected to the engine 151 and can transmit power from the engine 151 to the running gear 13. The fuel assembly 17 is supported by the frame 11. The seat assembly 19 is for a user to ride on, and the footrest assembly 27 is disposed below the seat assembly 19. The steering assembly 20 is operable to enable steering of the all-terrain vehicle 100. To clearly define the technical solution of this application, the following are also defined: Figure 1 The directions shown are front, rear, top, bottom, left, and right, where the front-rear direction is the length direction of the frame 11, the left-right direction is the width direction of the frame 11, and the top-bottom direction is the height direction of the frame 11. A plane perpendicular to the height direction of the all-terrain vehicle 100 and passing through at least one contact point between the running system 13 and the horizontal plane is defined as the reference plane 102. A plane perpendicular to the length direction of the frame 11 and passing through the midpoint of the wheelbase of the all-terrain vehicle 100 is defined as the lateral center plane 105 of the all-terrain vehicle 100. A plane perpendicular to the width direction of the frame 11 and passing through the midpoint of the width of the all-terrain vehicle 100 is defined as the longitudinal center plane 10s of the all-terrain vehicle 100, and the seat assembly 19 crosses the longitudinal center plane 10s.

[0027] like Figures 2 to 4 As shown, in one implementation, the engine 151 provided in this embodiment includes a cylinder head 1512, a cylinder 1513, and a cylinder head 1514. Along the height direction of the all-terrain vehicle 100, the cylinder head 1512 is used to enclose the cylinder head 1514, which is connected to and located above the cylinder 1513. Along the width direction of the all-terrain vehicle 100, multiple cylinder heads 1514 are distributed and arranged along the width direction of the all-terrain vehicle 100. Along the front-rear direction of the all-terrain vehicle 100, the cylinder heads 1514 are positioned towards the rear end of the all-terrain vehicle 100. It can be understood that, depending on the power requirements of the all-terrain vehicle 100, one, two, three, or more cylinder heads 1514 may be provided, and no limitation is made here.

[0028] As an optional implementation, the powertrain 15 also includes a continuously variable transmission (CVT) 152 and a magneto 157. The CVT 152 and the engine 151 are distributed along the width direction of the all-terrain vehicle 100, and the CVT 152 is drive-connected to the engine 151. The CVT 152 is provided with a drive wheel 1521 and a driven wheel 1522. The drive wheel 1521 and the driven wheel 1522 are drive-connected. The magneto 157 can be driven to generate electricity. In one implementation, the magneto 157 is located on the right side of the all-terrain vehicle 100, and the drive wheel 1521 is located on the left side of the all-terrain vehicle 100.

[0029] like Figures 2 to 5 As shown, the frame 11 includes a main frame 113, which includes an upper main beam 1131 and a lower main beam 1132, a crossbeam 1134, and a longitudinal beam 1133 disposed between the upper main beam 1131 and the lower main beam 1132. Along the height direction of the all-terrain vehicle 100, the longitudinal beam 1133 connects the upper main beam 1131 and the lower main beam 1132. The upper main beam 1131 includes two upper main beam tubes that are substantially symmetrically distributed about the longitudinal center plane 10s, and the lower main beam 1132 includes two lower main beam tubes that are substantially symmetrically distributed about the longitudinal center plane 10s. Along the width direction of the frame 11, the two upper main beam tubes and the two lower main beam tubes are connected by the crossbeam 1134. It is understood that the upper main beam 1131, lower main beam 1132, and crossbeam 1134 surround and form the aforementioned receiving space 115, within which the engine 151 and transmission assembly 16 are at least partially housed. Specifically, along the height direction of the frame 11, the distance between the uppermost point of the cylinder head 1514 of the engine 151 and the lowermost point of the upper main beam 1131 ranges from 10mm to 50mm. If the distance is less than 10mm, heat from the cylinder head 1514 will be transferred to the seat, affecting the user experience and making it inconvenient to install the engine 151. If the distance is greater than 50mm, the space between the upper main beam 1131 and the lower main beam 1132 will be wasted, failing to meet the installation requirements of other parts.

[0030] In one implementation, the distance between the uppermost point of the cylinder head 1514 of the engine 151 and the lowermost point of the upper main beam 1131 ranges from 20mm to 40mm. In some embodiments, the distance between the uppermost point of the cylinder head 1514 of the engine 151 and the lowermost point of the upper main beam 1131 ranges from 25mm to 35mm. This arrangement ensures a reliable distance between the cylinder head 1514 and the frame 11, preventing heat transfer from the cylinder head 1514 to the frame 11, thus avoiding heat conduction and impacting user experience. It also facilitates the disassembly and assembly of the engine 151, improving the convenience of maintenance and assembly, and effectively utilizes the space between the upper main beam 1131 and the lower main beam 1132, avoiding space waste and thus improving the space utilization rate of the all-terrain vehicle 100.

[0031] like Figures 4 to 7 As shown, in one embodiment, the engine 151 also includes at least two cylinder heads 1514 arranged side-by-side on the cylinders 1513 and a cylinder head 1512 mounted on the cylinder heads 1514. The two cylinder heads 1514 are disposed on the cylinders 1513. The cylinder heads 1514 are positioned facing the rear side of the all-terrain vehicle 100. The orthographic projection of the cylinder head 1512 on the reference plane 102 is defined as the cylinder head projection area S1; the area surrounded by the orthographic projection of the upper main beam 1131 along the height direction of the frame 11 on the reference plane 102 is defined as the upper main beam projection closed area; the portion of the cylinder head projection area S1 that falls into the upper main beam projection closed area is defined as the closed area projection S2, and the ratio of the area of ​​the closed area projection S2 to the area of ​​the cylinder head projection area S1 ranges from 0.6 to 0.9.

[0032] The ratio of the closed area projection S2 to the cylinder head projection area S1 ranges from 0.6 to 0.9. In fact, when the ratio of the closed area projection S2 to the cylinder head projection area S1 is less than 0.6, the engine 151 occupies too little internal space in the frame 11, resulting in excessive leakage of the cylinder head 1514. This increases the heat insulation cost of the all-terrain vehicle 100 and may even cause the center of gravity of the all-terrain vehicle 100 to shift, affecting the stability of the all-terrain vehicle 100.

[0033] As one implementation, the ratio of the closed area projection S2 to the cylinder head projection area S1 ranges from 0.7 to 0.85. More specifically, the ratio of the closed area projection S2 to the cylinder head projection area S1 ranges from 0.75 to 0.8. This arrangement allows the engine 151 to occupy as much of the internal space of the chassis 11 as possible, improving the utilization rate of the internal space of the chassis 11. This prevents related components of the engine 151 from extending out of the space formed around the chassis 11, thus avoiding the need for additional heat insulation mechanisms or increased heat insulation costs.

[0034] In one implementation, the cylinder head 1514 includes a left cylinder head 1514a and a right cylinder head 1514b, which are arranged side-by-side and substantially parallel along the frame 11. Along the width of the frame 11, the left cylinder head 1514a is located on the left side of the all-terrain vehicle 100, and the right cylinder head 1514b is located on the right side of the all-terrain vehicle 100. The cylinder 1513 includes a left cylinder 1513a and a right cylinder 1513b, with the left cylinder head 1514a mounted on the left cylinder 1513a and the right cylinder head 1514b mounted on the right cylinder 1513b. The central axis of the left cylinder 1513a is the left cylinder axis, and the central axis of the right cylinder 1513b is the right cylinder axis. The horizontal distance from the left cylinder axis to the longitudinal center plane 10s is the first distance W1, i.e., the left cylinder spacing. The horizontal distance from the right cylinder axis to the longitudinal center plane 10s is the second distance W2, i.e., the right cylinder spacing. The ratio between the first distance W1 and the second distance W2 ranges from 0 to 1. The ratio between the first distance W1 and the second distance W2 ranges from 0.2 to 0.8. In one implementation, the first distance W1 ranges from 0 mm to 200 mm, the second distance W2 ranges from 200 mm to 400 mm, and the ratio between the first distance W1 and the second distance W2 ranges from 0.4 to 0.6. In another implementation, the first distance W1 is 25 mm, the second distance W2 is 130 mm, and the left and right cylinder axes are both located on the same side of the longitudinal center plane 10s, with a ratio of 0.19. In yet another implementation, the first distance W1 is 20 mm, the second distance W2 is 95 mm, and the left and right cylinder axes are both located on opposite sides of the longitudinal center plane 10s, with a ratio of 0.21.

[0035] It is understood that there is a preset gap between the left cylinder head 1514a and the right cylinder head 1514b along the width direction of the frame 11. As one implementation method, this preset gap ranges from 6mm to 12mm. With this setting, on the one hand, the internal space of the frame 11 can be fully utilized, and on the other hand, sufficient gap can be ensured between the left cylinder head 1514a and the right cylinder head 1514b, so that the heat generated by the left cylinder head 1514a and the right cylinder head 1514b can be quickly dissipated, avoiding overheating and damage to the engine. At the same time, it can also prevent the heat radiation between the left cylinder head 1514a and the right cylinder head 1514b from affecting each other, thereby affecting the heat dissipation efficiency.

[0036] As one implementation, the upper main beam 1131 includes a left upper main beam 1131a and a right upper main beam 1131b, each extending along the length of the all-terrain vehicle 100. When the rider straddles the all-terrain vehicle 100, the minimum distance between the left upper main beam 1131a and the right upper main beam 1131b at the longitudinal position where the rider's legs are located is defined as the third distance W3, i.e., the straddle width. At the longitudinal position closest to the left and right cylinder axes, there is a fourth distance W4 between the left upper main beam 1131a and the right upper main beam 1131b, i.e., the top width of the engine 151. The fourth distance W4 is greater than the third distance W3.

[0037] As one implementation, the first distance W1 or the second distance W2 is less than half of the third distance W3, and the sum of the first distance W1 and the second distance W2 is less than the fourth distance W4.

[0038] As one implementation, the first distance W1 is less than half of the fourth distance W4.

[0039] The above arrangement allows for a more rational layout between the engine 151 and the frame 11, resulting in higher space utilization. It also prevents the engine 151 from being excessively offset towards one side of the longitudinal center plane 10s, which could affect the passenger's grip or increase leg heat and insulation costs. Therefore, the above arrangement of the engine 151 and the upper main beam 1131 is reasonable, facilitating leg grip for the passenger and improving driving stability and safety.

[0040] like Figure 4As shown, along the width direction of the frame 11, the vertical distance between the leftmost side of the left cylinder head 1514a and the longitudinal center plane 10s is set as W5, and the vertical distance between the rightmost side of the right cylinder head 1514b and the longitudinal center plane 10s is set as the sixth distance W6. The ratio of the fifth distance W5 to the sixth distance W6 ranges from 0.2 to 1.8. Alternatively, the ratio ranges from 0.5 to 1.5. Another possible implementation is a ratio range of 0.8 to 1.2. The above settings ensure that both the left cylinder head 1514a and the right cylinder head 1514b are at a certain distance from the area where the driver's legs are held, preventing excessive offset. This allows the heat generated by the left and right cylinder heads 1514a and 1514b to dissipate quickly, preventing overheating and engine damage. It also prevents the heat from the left and right cylinder heads 1514a and 1514b from affecting the driver's experience. As one implementation, the distance between the leftmost side of the engine 151 and the longitudinal center plane 10s is set as the seventh distance W7, and the distance between the rightmost side of the engine 151 and the longitudinal center plane 10s is set as the eighth distance W8. The ratio of the seventh distance W7 to the eighth distance W8 is set to a range of 0.6 to 1.3. More specifically, the ratio of the seventh distance W7 to the eighth distance W8 is set to a range of 0.7 to 1.2. Alternatively, the ratio of the seventh distance W7 to the eighth distance W8 is set to a range of 0.8 to 1. In fact, the ratio of the seventh distance W7 to the eighth distance W8 can also be set to 0.9. With this setting, the engine 151 can be made narrower in the width direction of the frame 11, which provides better grip for the rider and improves the human-machine interface, greatly enhancing the user experience.

[0041] like Figures 1 to 3 As shown, the steering assembly 20 is mounted on the frame 11 and located at the front of the all-terrain vehicle 100. The engine 151 also includes an intake assembly 1516 and an air intake 1517. The air intake 1517 is mounted on the engine housing and connected to the intake assembly 1516. The intake assembly 1516 includes an intake pipe and an air filter. The intake pipe connects the air filter and the air intake 1517, thereby delivering filtered air to the air intake 1517 to meet the intake requirements of the engine 151. In one implementation, the orthographic projection of the frame 11 onto the reference plane 102 is a first projection, and the orthographic projection of the air intake 1517 onto the reference plane 102 is a second projection, located in an area outside the first projection. The air intake 1517 is positioned between the steering assembly 20 and the cylinder head 1514, resulting in smoother air intake and facilitating the arrangement of the intake structure.

[0042] like Figure 3As shown, the fuel assembly 17 includes a fuel tank 171, which powers the engine 151. Along the longitudinal direction of the all-terrain vehicle 100, an air filter is disposed between the fuel tank 171 and the engine 151. That is, the engine 151 is located at the rear, the fuel tank 171 at the front, and the air filter in the middle. Alternatively, along the vertical direction of the all-terrain vehicle 100, the fuel tank 171 is disposed between the upper main beam 1131 and the lower main beam 1132. Alternatively, the fuel tank 171 can be positioned closer to the upper main beam 1131. Figure 5 As shown, as another implementation, the fuel tank 171 can also be located near the lower main beam 1132, thereby lowering the center of gravity of the all-terrain vehicle 100 and improving the handling of the all-terrain vehicle 100; at the same time, it can make full use of the space at the front of the all-terrain vehicle 100.

[0043] like Figure 3 , Figure 8 As shown, cylinder 1513 has a cylinder axis 10m. The orthographic projection of cylinder axis 10m onto the longitudinal center plane 10s is the cylinder projection line. In one implementation, the angle κ between this cylinder projection line and the reference plane 102 ranges from 45° to 65°. This configuration allows the height of the cylinder head 1514 of engine 151 to be controlled within a reasonable range, which is beneficial for the overall vehicle layout, making the engine 151's structure more compact, and facilitating smoother airflow in the engine 151's intake and exhaust systems, thereby improving the performance and reliability of engine 151.

[0044] As an optional implementation, the line connecting the orthographic projection of the axis center of the drive wheel 1521 onto the longitudinal center plane 10s and the orthographic projection of the axis center of the driven wheel 1522 onto the longitudinal center plane 10s is the transmission projection line 152a. The opening of the angle β formed by the cylinder projection line and the transmission projection line 152a is positioned facing the rear of the all-terrain vehicle 100, and the angle β ranges from 35° to 75°. Specifically, the angle β formed by the cylinder projection line and the transmission projection line 152a ranges from 40° to 70°. More specifically, the angle β formed by the cylinder projection line and the transmission projection line 152a ranges from 45° to 65°. For example, in this embodiment, the angle β formed by the cylinder projection line and the transmission projection line 152a is 64.7°. With the above arrangement, it is advantageous for the exhaust pipe 321 to be directly arranged rearward, thereby helping to shorten the overall length of the exhaust pipe 321. Furthermore, the above arrangement avoids an excessively large angle β between the cylinder projection line and the transmission projection line 152a, which would increase the length of the exhaust pipe 321 and thus help shorten the overall length of the exhaust pipe 321. Additionally, it avoids an excessively small angle β between the cylinder projection line and the transmission projection line 152a, which would cause the cylinder head 1514 to be too far rearward, thereby preventing the cylinder head 1514 from interfering with the assembly of other components.

[0045] like Figure 2As shown, along the width direction of the frame 11, the pedal assembly 27 is disposed on both sides of the frame 11. Specifically, the pedal assembly 27 includes a left pedal 271 and a right pedal 272, which are substantially symmetrically distributed about the longitudinal center plane 10s. As one implementation, the left pedal 271 is provided with a left pedal serration 2711 to increase friction, and the right pedal 272 is provided with a right pedal serration 2721 to increase friction. Both the left and right pedal serrations 2711 and 2721 can be configured to adapt to the shape of the pedal. As one implementation, the left and right pedal serrations 2711 and 2721 are rectangular. The orthographic projection of the left pedal serration 2711 onto the reference plane 102 is the left pedal serration projection 2711a, and the orthographic projection of the right pedal serration 2721 onto the reference plane 102 is the right pedal serration projection 2721a. In one implementation, the walking system 13 includes a front wheel 132 and a rear wheel 133. The front wheel 132 has a first rotation center 132a, and the rear wheel 133 has a second rotation center 133a. Along the length of the frame 11, the serrated projections 2711a and 2721a of the left and right foot pedals are located between the first and second rotation centers 132a and 133a, and are positioned in the middle of the first and second rotation centers 132a. In another implementation, the front wheel 132 includes a left front wheel 1321 and a right front wheel 1322, and the rear wheel 133 includes a left rear wheel 1331 and a right rear wheel 1332. The longitudinal center plane 10s passes through the midpoint of the distance between the left front wheel 1321 and the right front wheel 1322. The orthographic projections of the left front wheel 1321, right front wheel 1322, left rear wheel 1331, and right rear wheel 1332 within the reference plane 102 form a projection area, and the left foot pedal sawtooth projection 2711a and the right foot pedal sawtooth projection 2721a are both located within this projection area.

[0046] As one implementation, along the longitudinal direction of the all-terrain vehicle 100, the distance L between the rightmost side of the left foot pedal serrated projection 2711a and the rotation center of the drive wheel 1521 is greater than 0 to 420 mm. The distance between the leftmost side of the right foot pedal serrated projection 2721a and the rotation center of the magneto 157 is greater than 0 to 420 mm. When the distance between the left foot pedal serrated projection 2711a and the rotation center of the drive wheel 1521 is greater than 420 mm, it will cause the center of gravity of the all-terrain vehicle 100 to be further rearward, resulting in poor stability. When the distance between the right foot pedal serrated projection 2721a and the rotation center of the magneto 157 is greater than 420 mm, it will cause the center of gravity of the all-terrain vehicle 100 to be further rearward, resulting in poor stability. Understandably, along the longitudinal direction of the all-terrain vehicle 100, the distance between the rightmost side of the left foot pedal serrated projection 2711a and the rotation center of the drive wheel 1521 ranges from 40 mm to 380 mm. The distance between the leftmost side of the right foot pedal serrated projection 2721a and the rotation center of the magneto 157 ranges from 40mm to 380mm. Furthermore, along the longitudinal direction of the all-terrain vehicle 100, the distance between the rightmost side of the left foot pedal serrated projection 2711a and the rotation center of the drive wheel 1521 ranges from 60mm to 300mm. The distance between the leftmost side of the right foot pedal serrated projection 2721a and the rotation center of the magneto 157 also ranges from 60mm to 300mm.

[0047] As one implementation, the distance between the rightmost edge of the left foot pedal serrated projection 2711a and the leftmost edge of the drive wheel 1521 is set to be greater than 0 to 150 mm, and the distance between the rightmost edge of the right foot pedal serrated projection 2721a and the rightmost edge of the magneto 157 is set to be greater than 0 to 150 mm. This can be understood as the distance between the rightmost edge of the left foot pedal serrated projection 2711a and the leftmost edge of the drive wheel 1521 being set to be in the range of 40 mm to 110 mm, and the distance between the rightmost edge of the right foot pedal serrated projection 2721a and the rightmost edge of the magneto 157 being set to be in the range of 40 mm to 110 mm. Furthermore, the distance between the rightmost edge of the left foot pedal serrated projection 2711a and the leftmost edge of the drive wheel 1521 is set to be in the range of 60 mm to 90 mm, and the distance between the rightmost edge of the right foot pedal serrated projection 2721a and the rightmost edge of the magneto 157 is set to be in the range of 60 mm to 90 mm. The above settings effectively improve the layout of the engine 151, allowing it to be positioned more centrally within the all-terrain vehicle 100, and ensuring the cylinder head 1514 faces effectively towards the rear of the all-terrain vehicle 100. This allows the heat from the engine 151 to be effectively dissipated from the driver and passengers, thus significantly improving the user experience.

[0048] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An all-terrain vehicle, comprising: Frame; A body panel that covers the vehicle frame; A suspension system, which is supported by the vehicle frame; A running gear system, which is at least partially connected to the vehicle frame via the suspension system; A foot pedal assembly, the foot pedal assembly including a left foot pedal serration and a right foot pedal serration; The powertrain includes an engine for driving the walking system, and the powertrain also includes a magneto and a drive wheel, the magneto being disposed on one side of the all-terrain vehicle and the drive wheel being disposed on the other side of the all-terrain vehicle; Its features are, The engine includes cylinders, two cylinder heads arranged side-by-side on the cylinders, and cylinder heads mounted on the cylinder heads; the cylinder heads are positioned towards the rear end of the all-terrain vehicle; a plane perpendicular to the height direction of the frame and passing through the contact point between the walking system and the ground is defined as a reference plane, the orthographic projection of the left foot pedal sawtooth in the reference plane is the left foot pedal sawtooth projection, the orthographic projection of the right foot pedal sawtooth in the reference plane is the right foot pedal sawtooth projection, along the length direction of the frame, the distance between the rightmost side of the left foot pedal sawtooth projection and the rotation center of the drive wheel ranges from 0 to 420 mm; the distance between the leftmost side of the right foot pedal sawtooth projection and the rotation center of the magneto ranges from 0 mm to 420 mm.

2. The all-terrain vehicle according to claim 1, characterized in that, The cylinder includes a left cylinder and a right cylinder, which are arranged side by side and substantially parallel along the width direction of the vehicle frame.

3. The all-terrain vehicle according to claim 1, characterized in that, Along the length of the frame, the distance between the rightmost side of the projection of the left foot pedal sawtooth and the rotation center of the drive wheel ranges from 40mm to 380mm; the distance between the leftmost side of the projection of the right foot pedal sawtooth and the rotation center of the magneto ranges from 40mm to 380mm.

4. The all-terrain vehicle according to claim 1, characterized in that, Along the length of the frame, the distance between the rightmost side of the projection of the left foot pedal sawtooth and the rotation center of the drive wheel ranges from 60mm to 340mm; the distance between the leftmost side of the projection of the right foot pedal sawtooth and the rotation center of the magneto ranges from 60mm to 340mm.

5. The all-terrain vehicle according to claim 1, characterized in that, The distance between the rightmost side of the left foot pedal sawtooth projection and the leftmost side of the drive wheel ranges from 80mm to 300mm, and the distance between the rightmost side of the right foot pedal sawtooth projection and the rightmost side of the magneto ranges from 80mm to 300mm.

6. The all-terrain vehicle according to claim 1, characterized in that, Along the width direction of the frame, the distance between the rightmost side of the projection of the left foot pedal sawtooth and the leftmost side of the drive wheel is greater than 0 to 150 mm, and the distance between the rightmost side of the projection of the right foot pedal sawtooth and the rightmost side of the magneto is greater than 0 to 150 mm.

7. The all-terrain vehicle according to claim 1, characterized in that, Along the width direction of the frame, the distance between the rightmost side of the projection of the left foot pedal sawtooth and the leftmost side of the drive wheel ranges from 40mm to 110mm, and the distance between the rightmost side of the projection of the right foot pedal sawtooth and the rightmost side of the magneto ranges from 40mm to 110mm.

8. The all-terrain vehicle according to claim 7, characterized in that, The distance between the rightmost side of the left foot pedal sawtooth projection and the leftmost side of the drive wheel ranges from 60mm to 90mm, and the distance between the rightmost side of the right foot pedal sawtooth projection and the rightmost side of the magneto ranges from 60mm to 90mm.

9. The all-terrain vehicle according to claim 1, characterized in that, Define a plane perpendicular to the width direction of the frame and passing through the midpoint of the width of the all-terrain vehicle as the longitudinal center plane of the all-terrain vehicle; the ratio of the distance between the leftmost side of the engine and the longitudinal center plane to the distance between the rightmost side of the engine and the longitudinal center plane ranges from 0.6 to 1.

3.

10. The all-terrain vehicle according to claim 9, characterized in that, The ratio of the distance between the leftmost side of the engine and the longitudinal center plane to the distance between the rightmost side of the engine and the longitudinal center plane ranges from 0.8 to 1.

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