All-terrain vehicle

Abstract

The all-terrain vehicle comprises a vehicle frame, a vehicle body covering part, a walking system, a suspension system, an engine and a fuel oil assembly, and the fuel oil assembly comprises an oil tank; a first plane perpendicular to the length direction of the frame and passing through the rotating axis of the front wheel is defined, a second plane perpendicular to the height direction of the frame and passing through the rotating axis of the front wheel is defined, the engine comprises an air cylinder, and an included angle opening between an air cylinder projection line and a transmission projection line faces the rear portion of the all-terrain vehicle; the air filter is at least partially located between the oil tank and the engine, and is at least partially overlapped with the engine and the oil tank when being observed in the length direction of the frame; observed in the height direction of the frame, the air filter and the driven wheel are at least partially overlapped, and the air filter and the engine are not overlapped. Through the arrangement, the oil tank can balance the weight of the engine, the gravity center height of the whole all-terrain vehicle is reduced, and the driving stability of the all-terrain vehicle is improved.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and in particular, to an all-terrain vehicle. Background Art

[0002] An all-terrain vehicle is a multi-functional vehicle designed specifically for various complex terrains. It has powerful off-road capabilities and stability, and can easily travel in complex environments such as mud, sand, snow, and rocks.

[0003] An all-terrain vehicle generally includes a frame, body covers, a running system, a suspension system, a power assembly, and a fuel assembly. Among them, the fuel assembly includes a fuel tank, and the power assembly includes an engine. In the prior art, the fuel tank is arranged at the rear inside the all-terrain vehicle, which results in interference between the fuel tank and the engine located in the middle and rear of the all-terrain vehicle in the length direction of the frame. As a result, the fuel tank and the engine need to be arranged along the height direction of the frame. However, this arrangement will increase the overall vehicle center of gravity height of the all-terrain vehicle, thereby reducing the driving stability of the all-terrain vehicle.

[0004] Therefore, how to improve the driving stability of an all-terrain vehicle is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0005] To solve the deficiencies of the prior art, the purpose of this application is to provide an all-terrain vehicle with better driving stability.

[0006] To achieve the above purpose, this application adopts the following technical solutions:

[0007] An all-terrain vehicle, which includes: a frame, a body cover, a running system, a suspension system, an engine, an air filter, a fuel assembly, a continuously variable transmission mechanism, and a storage box assembly. The body cover is at least partially disposed on the frame and includes a front fender. The running system is at least partially located below the frame and includes front wheels. The suspension system connects the front wheels to the frame. The engine is at least partially disposed on the frame and is drivingly connected to the front wheels. The engine includes a cylinder. The air filter is connected to the engine. The fuel assembly includes a fuel tank, and the fuel tank is supported by the frame and supplies fuel to the engine. The continuously variable transmission mechanism includes a driving wheel and a driven wheel, and the driving wheel is drivingly connected to the driven wheel. Among them, the driving wheel is located behind the driven wheel. Define a longitudinal central plane perpendicular to the width direction of the frame and passing through the midpoint of the frame width. The line connecting the orthographic projection of the axis center of the driving wheel on the longitudinal central plane and the orthographic projection of the axis center of the driven wheel on the longitudinal central plane is the transmission projection line. The cylinder has a cylinder axis, and the orthographic projection of the cylinder axis on the longitudinal central plane is the cylinder projection line. The included angle between the cylinder projection line and the transmission projection line opens towards the rear of the all-terrain vehicle. Define a first plane perpendicular to the length direction of the frame and passing through the rotation axis of the front wheel, and define a second plane perpendicular to the height direction of the frame and passing through the rotation axis of the front wheel. The fuel tank is located behind the first plane and at least partially in front of the engine. The fuel tank is located above the second plane and at least partially below the front fender. When observing along the length direction of the frame, the air filter is at least partially located between the fuel tank and the engine, and the air filter at least partially overlaps with both the engine and the fuel tank. When observing along the height direction of the frame, the air filter at least partially overlaps with the driven wheel, and the air filter does not overlap with the engine.

[0008] Further, the running system includes rear wheels drivingly connected to the engine. The minimum distance between the fuel tank and the first plane along the length direction of the frame is the first distance. The distance between the rotation axis of the front wheels and the rotation axis of the rear wheels along the length direction of the frame is the wheelbase. The ratio range of the first distance to the wheelbase is from 0.1 to 0.16.

[0009] Further, the angle range of the acute angle formed by the cylinder projection line and the horizontal plane is from 50° to 60°.

[0010] Further, the minimum distance between the engine and the rotation axis of the rear wheels along the length direction of the frame is the rear distance. The ratio range of the first distance to the rear distance is from 0.11 to 0.17.

[0011] Further, the minimum distance between the fuel tank and the second plane along the height direction of the frame is the second distance. The ratio range of the second distance to the wheelbase is from 0.09 to 0.15.

[0012] Further, the suspension system includes a front shock absorber and a front swing arm. The front swing arm connects the front wheel to the frame. The front shock absorber is rotatably connected to the front swing arm and the frame. The fuel tank is at least partially located behind the front shock absorber.

[0013] Further, the all-terrain vehicle includes a seat assembly supported by the frame. The body covering also includes a storage box assembly supported by the frame. Along the length direction of the frame, the storage box assembly is at least partially located between the front fender and the seat assembly. The fuel tank is at least partially located below the storage box assembly.

[0014] Further, the fuel assembly includes a fuel filler port communicated with the fuel tank. The fuel filler port is located on the front fender.

[0015] Further, the fuel filler port extends substantially along a preset straight line direction. The projection of the preset straight line on the longitudinal central plane is a first projection line. The angular range of the included angle formed by the first projection line and the horizontal plane is from 20° to 90°; the opening of the included angle is set backward.

[0016] Further, the fuel tank is provided with a first fixing portion, a second fixing portion and a plugging portion. The first fixing portion is closer to the fuel filler port than the second fixing portion. The frame includes a first pipe member located in front of the fuel tank, a second pipe member located behind the fuel tank and a supporting cross beam located below the fuel tank. The first fixing portion is fixedly connected to the first pipe member, the second fixing portion is fixedly connected to the second pipe member, and the plugging portion is plugged with the supporting cross beam.

[0017] The above all-terrain vehicle can enable the fuel tank to be distributed along the length direction of the frame with the engine and be located in front of the engine. Moreover, the fuel tank is also located behind the first plane, so that the fuel tank can balance the weight of the engine, which is beneficial to reducing the overall center of gravity height of the all-terrain vehicle and further beneficial to improving the driving stability of the all-terrain vehicle. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the all-terrain vehicle provided by the embodiment of the present application.

[0019] Figure 2 It is a partial structural side view of the all-terrain vehicle provided by the embodiment of the present application.

[0020] Figure 3 It is a side view of the frame, the running system, the power assembly and the exhaust assembly of the all-terrain vehicle provided by the embodiment of the present application.

[0021] Figure 4 It is a top view of the frame, the running system, the power assembly and the exhaust assembly of the all-terrain vehicle provided by the embodiment of the present application.

[0022] Figure 5 It is a rear view of the power assembly of the all-terrain vehicle provided by the embodiment of the present application.

[0023] Figure 6 It is the right view of a partial structure of the all-terrain vehicle provided by the embodiment of the present application.

[0024] Figure 7 It is the assembly drawing of the frame and fuel assembly of the all-terrain vehicle provided by the embodiment of the present application.

[0025] Figure 8 For the embodiment of the present application Figure 7 The enlarged view of the partial area at A in it.

[0026] Figure 9 It is the exploded view of the frame, fuel assembly, power assembly, seat assembly and electrical components of the all-terrain vehicle provided by the embodiment of the present application.

[0027] Figure 10 It is the top view of the frame, fuel assembly, power assembly and electrical components of the all-terrain vehicle provided by the embodiment of the present application.

[0028] Figure 11 The schematic diagram of the exploded structure of the engine of the all-terrain vehicle provided by the embodiment of the present application.

[0029] Figure 12 It is the top view of the assembly relationship of the engine, continuously variable transmission mechanism, fuel tank and air filter of the all-terrain vehicle provided by the embodiment of the present application.

[0030] Figure 13 It is the simulation diagram of the assembly relationship of the engine, continuously variable transmission mechanism, fuel tank and air filter of the all-terrain vehicle provided by the embodiment of the present application. Specific embodiments

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the specific embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0032] It should be noted that the terms "first", "second" and similar terms used in the description and claims of this application do not denote any order, quantity or importance, but are merely used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a quantity limitation, but rather indicate the presence of at least one. Unless otherwise indicated, terms such as "front", "rear", "left", "right", "lower" and / or "upper" are for convenience only and are not limited to a particular position or spatial orientation. The terms "comprising" or "including" and similar terms mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. The singular forms "a", "the" and "said" used in the description and appended claims of this application are also intended to include the plural forms, unless the context clearly dictates otherwise.

[0033] As Figure 1 and Figure 2 shown, this application provides an all-terrain vehicle 100, which includes a frame 11, a body cover 12, a running system 13, a suspension system 14, a power assembly 15, a transmission assembly 16, a fuel assembly 17, a seat assembly 19 and an electrical component 22.

[0034] To clearly illustrate the technical solution of this application, the front, rear, left, right, upper and lower as Figure 1 shown are also defined. In this application, the length direction of the frame 11 refers to the Figure 1 front-rear direction in Figure 1 , the width direction of the frame 11 refers to the Figure 1 left-right direction in

[0035] Among them, the vehicle frame 11 serves as the basic framework of the all-terrain vehicle 100 and is used to support the body cover 12, the running system 13, the suspension system 14, the power assembly 15, the transmission assembly 16, the fuel assembly 17, the seat assembly 19, and the electrical assembly 22. The body cover 12 is at least partially located on the vehicle frame 11 and connected to the vehicle frame 11 so that the body cover 12 can protect the components inside the all-terrain vehicle 100. The running system 13 is at least partially located below the vehicle frame 11, and the suspension system 14 connects the running system 13 to the vehicle frame 11. The power assembly 15 is in transmission connection with the running system 13. Specifically, the transmission assembly 16 transmits the power assembly 15 to the running system 13. The fuel assembly 17 includes a fuel tank 171, and the fuel tank 171 is used to supply energy to the power assembly 15. Specifically, the fuel tank 171 is used to deliver fuel to the power assembly 15. The electrical assembly 22 is supported by the vehicle frame 11. The electrical assembly 22 is supported by the body cover 12 or the vehicle frame 11. The electrical assembly 22 is used to display the driving data of the all-terrain vehicle 100, control the operation of the all-terrain vehicle 100, etc. The seat assembly 19 is supported by the vehicle frame 11, and the seat assembly 19 is used to support the driver and / or passengers.

[0036] As Figure 3 , Figure 4 and Figure 9 shown, the running system 13 includes a rear wheel 133, and the suspension system 14 connects the rear wheel 133 to the vehicle frame 11. The power assembly 15 is supported by the vehicle frame 11, and the power assembly 15 is in transmission connection with the rear wheel 133 to drive the rear wheel 133 to move. The all-terrain vehicle 100 further includes an exhaust assembly 32, and the exhaust assembly 32 is used to transport and discharge the exhaust gas generated by the power assembly 15.

[0037] The power assembly 15 includes an engine 151, and the engine 151 is in transmission connection with the rear wheel 133 so that the engine 151 drives the rear wheel 133 to rotate. Specifically, the engine 151 includes an exhaust passage 1515, and the exhaust passage 1515 is used to discharge the exhaust gas generated during the operation of the engine 151 and transport the exhaust gas generated by the engine 151 to the exhaust assembly 32.

[0038] More specifically, the exhaust assembly 32 includes an exhaust pipe 321 and a muffler 322. The exhaust pipe 321 is used to transport the exhaust gas, and the muffler 322 is used to reduce the noise generated when the exhaust pipe 321 transports the exhaust gas. Among them, the exhaust pipe 321 is connected to the exhaust passage 1515, and the muffler 322 is connected to the exhaust pipe 321.

[0039] In this embodiment, the opening of the exhaust passage 1515 is arranged facing backward. With such an arrangement, the exhaust pipe 321 connected to the exhaust passage 1515 can be directly arranged facing backward, which is beneficial to shortening the overall length of the exhaust pipe 321, and thus beneficial to reducing the cost of the exhaust pipe 321. Secondly, the above arrangement is also beneficial to reducing the space occupancy rate of the exhaust pipe 321 in the all-terrain vehicle 100, so that more layout space can be provided for other components, so that the exhaust pipe 321 does not interfere with the assembly of other components, and thus beneficial to improving the structural compactness inside the all-terrain vehicle 100.

[0040] In addition, in the present application, the waste gas generated by the engine 151 contains a large amount of heat. Therefore, through the above arrangement, the exhaust pipe 321 can be arranged facing backward and the length of the exhaust pipe 321 can be shortened, which is beneficial to shortening the flow path of the waste gas in the all-terrain vehicle 100, and thus beneficial to reducing the heat transfer of the waste gas in the all-terrain vehicle 100, and thus beneficial to reducing the overall temperature of the all-terrain vehicle 100 to improve the driving comfort of the all-terrain vehicle 100. And, in the present application, the seat assembly 19 (refer to Figure 6 ) is located in front of the exhaust passage 1515. Therefore, arranging the exhaust pipe 321 facing backward can make the exhaust pipe 321 be arranged away from the seat assembly 19, so as to reduce the heat conducted from the waste gas in the exhaust pipe 321 to the seat assembly 19, so as to further improve the driving comfort of the all-terrain vehicle 100.

[0041] In this embodiment, the orthographic projection of the exhaust passage 1515 on the horizontal plane is the exhaust projection 1515a, and the orthographic projection of the axis of the rear wheel 133 on the horizontal plane is the rear axle projection line 133a. Among them, the range of the minimum distance D14 between the exhaust projection 1515a and the rear axle projection line 133a is 250 mm to 400 mm. Specifically, the range of the minimum distance D14 between the exhaust projection 1515a and the rear axle projection line 133a is 300 mm to 350 mm. More specifically, the minimum distance D14 between the exhaust projection 1515a and the rear axle projection line 133a is 325 mm. With such a setting, it is possible to avoid the minimum distance D14 between the exhaust projection 1515a and the rear axle projection line 133a being too small, which may cause the exhaust passage 1515 to be too far back, thereby avoiding the engine 151 being too far back due to the exhaust passage 1515 being too far back, so as to avoid the engine 151 interfering with the assembly of the components located at the rear of the frame 11, which is conducive to improving the working stability of the components at the rear of the frame 11. In addition, it is also possible to avoid the minimum distance D14 between the exhaust projection 1515a and the rear axle projection line 133a being too large, which may lead to the need to lay a too long exhaust pipe 321, thus being conducive to shortening the overall length of the exhaust pipe 321, so as to avoid the exhaust pipe 321 interfering with the assembly of other components, and then improving the structural compactness at the exhaust pipe 321. At the same time, it is also possible to avoid the excessive heat transfer of the exhaust gas in the all-terrain vehicle 100 due to the too long exhaust pipe 321, which is conducive to reducing the overall temperature of the all-terrain vehicle 100, so as to improve the driving comfort of the all-terrain vehicle 100.

[0042] As an embodiment, the exhaust pipe 321 extends backward along the front-rear direction of the frame 11, and the exhaust pipe 321 is divided by the longitudinal central plane 10s. With such a setting, the exhaust pipe 321 can be arranged in the middle along the width direction of the frame 11, thereby avoiding the situation where the exhaust pipe 321 is biased to one side, resulting in too high a temperature at the position where the exhaust pipe 321 is located, that is, there is an interval between the exhaust pipe 321 and both sides of the all-terrain vehicle 100 along the width direction, and this interval can block part of the heat dissipated by the exhaust pipe 321, which is conducive to reducing the overall heat of the all-terrain vehicle 100. In addition, the exhaust pipe 321 arranged in the middle is also conducive to shortening the layout travel of the exhaust pipe 321 in the all-terrain vehicle 100, thus being conducive to shortening the overall length of the exhaust pipe 321.

[0043] As an alternative implementation, along the length direction of the frame 11, the length L6 of the exhaust pipe 321 ranges from 350 mm to 600 mm. Specifically, the length L6 of the exhaust pipe 321 ranges from 400 mm to 550 mm. More specifically, the length L6 of the exhaust pipe 321 ranges from 450 mm to 500 mm. With such a setting, it is possible to avoid the exhaust pipe 321 having an overly long length that may cause interference with the assembly of other components, thereby facilitating the improvement of the structural compactness of the exhaust pipe 321. At the same time, it is also possible to avoid the exhaust pipe 321 having an overly long length L6 that may cause excessive heat conduction of the exhaust gas in the exhaust pipe 321 within the all-terrain vehicle 100, thereby facilitating the reduction of the overall temperature of the all-terrain vehicle 100 to improve the driving comfort of the all-terrain vehicle 100.

[0044] As an implementation, the frame 11 includes an upper main beam 1131, and the upper main beam 1131 includes a left upper main beam 1131a and a right upper main beam 1131b. Among them, the left upper main beam 1131a and the right upper main beam 1131b are distributed along the width direction of the frame 11. Specifically, the orthographic projection of the left upper main beam 1131a on the horizontal plane is the left upper main beam projection plane, the orthographic projection of the right upper main beam 1131b on the horizontal plane is the right upper main beam projection plane, the orthographic projection of the exhaust pipe 321 on the horizontal plane is the exhaust pipe projection plane, and the exhaust pipe projection plane is located between the left upper main beam projection plane and the right upper main beam projection plane. That is, when observing along the height direction of the frame, the exhaust pipe is arranged between the left upper main beam and the right upper main beam. Such a setting is conducive to the exhaust pipe 321 being centered along the width direction of the frame 11, thereby facilitating the reduction of the overall heat of the all-terrain vehicle 100. Secondly, it is also possible to avoid the exhaust pipe 321 interfering with the installation of components outside the frame 11 when the exhaust pipe 321 is located outside the upper main beam 1131. In addition, it is also avoided that the frame 11 cannot protect the exhaust pipe 321 when the exhaust pipe 321 is located outside the upper main beam 1131, thereby facilitating the improvement of the protection effect on the exhaust pipe 321 to improve the service life of the exhaust pipe 321.

[0045] As an implementation, the suspension system 14 includes a rear swing arm 145 and a shock absorber 147. The rear swing arm 145 connects the rear wheel 133 to the frame 11, and both ends of the shock absorber 147 are respectively connected to the rear swing arm 145 and the frame 11 so that the shock absorber 147 can provide buffering for the rear swing arm 145. Specifically, when observing from the width direction of the frame 11, the shock absorber 147 at least partially overlaps with the exhaust pipe 321. With such a setting, it is possible to avoid interference in the assembly of the exhaust pipe 321 and the shock absorber 147. In addition, it is possible to avoid the exhaust pipe 321 occupying the layout space above the shock absorber 147, which may cause the layout space of the shock absorber 147 to be reduced, thereby facilitating the layout of a large-volume shock absorber 147, which is conducive to improving the shock absorption effect of the shock absorber 147 and further conducive to improving the comfort of the all-terrain vehicle 100.

[0046] As an implementation manner, the exhaust pipe 321 includes a rigid pipe 3211 and a corrugated pipe 3212. Both ends of the corrugated pipe 3212 are connected to the rigid pipe 3211, and the rigid pipes 3211 are respectively connected to the exhaust passage 1515 and the muffler 322. Specifically, the two ends of the rigid pipe 3211 are respectively connected to the exhaust passage 1515 and the muffler 322. With such a setting, the flexible connection of the corrugated pipe 3212 can absorb the vibrations transmitted to the exhaust pipe 321 during the operation of the engine 151 and the driving of the all-terrain vehicle 100, thereby avoiding damage to the exhaust pipe 321 caused by strong vibrations, and further improving the service life of the exhaust pipe 321. Secondly, it is also possible to avoid using connection and sealing structures such as springs and graphite rings to realize the connection of the rigid pipe 3211 and the shock absorption function of the exhaust pipe 321, which is beneficial to simplifying the overall structure of the exhaust pipe 321, and further beneficial to simplifying the assembly process of the exhaust pipe 321 to improve the assembly efficiency of the exhaust pipe 321. In some embodiments, the corrugated pipe 3212 is welded to the rigid pipe 3211 to make the exhaust pipe 321 an integral structure, which is beneficial to improving the sealing performance of the exhaust pipe 321. And through the above setting, it is also beneficial to simplify the sealing structure of the exhaust pipe 321, thereby avoiding leakage of the exhaust pipe 321 at the connection of the rigid pipe 3211 to further improve the sealing performance of the exhaust pipe 321. In addition, due to the flexible characteristics of the corrugated pipe 3212, when the exhaust pipe 321 is working, it is beneficial for the exhaust pipe 321 to adjust the angle, and further beneficial to improving the shock absorption effect of the exhaust pipe 321.

[0047] In this implementation manner, the length L7 of the corrugated pipe 3212 ranges from 100 mm to 200 mm. Specifically, the length L7 of the corrugated pipe 3212 ranges from 120 mm to 180 mm. More specifically, the length L7 of the corrugated pipe 3212 ranges from 140 mm to 160 mm. With such a setting, it is possible to avoid the situation that the length L7 of the corrugated pipe 3212 is too long, resulting in too low rigid strength of the exhaust pipe 321, thereby avoiding the situation that the exhaust pipe 321 has too large a shaking amplitude after being vibrated due to too low rigid strength, and further avoiding damage to the exhaust pipe 321 caused by excessive shaking of the exhaust pipe 321 and collision with other components, which is beneficial to improving the service life of the exhaust pipe 321. In addition, it is also possible to avoid the situation that the length L7 of the corrugated pipe 3212 is too short, resulting in insufficient shock absorption effect of the corrugated pipe 3212, which is beneficial to improving the overall shock absorption effect of the exhaust pipe 321.

[0048] It should be noted that when the corrugated pipe 3212 is in the natural state, it extends along a preset straight line 10t direction, so as to avoid the corrugated pipe 3212 being deflected and deformed in the natural state, resulting in a reduction in the deformation characteristics of the corrugated pipe 3212, and further avoiding a reduction in the effect of the corrugated pipe 3212 absorbing the vibrations of the exhaust pipe 321, which is beneficial to improving the shock absorption effect of the corrugated pipe 3212.

[0049] As an implementation manner, the engine 151 includes a cylinder 1513 and a cylinder head 1514, and the cylinder head 1514 is connected to the cylinder 1513. The engine 151 further includes a cylinder cover 1512, and the cylinder cover 1512 covers the cylinder head 1514. Specifically, two cylinder holes (not shown in the figure) are provided in the cylinder head 1514, that is, the engine 151 is a twin-cylinder engine. With such a setting, the twin-cylinder engine can improve the output power of the engine 151, which is beneficial to improving the controllability of the all-terrain vehicle 100.

[0050] As Figure 5 shown, along the width direction of the frame 11, the ratio range of the maximum width W4 occupied by the cylinder head 1514 to the maximum width W5 occupied by the cylinder 1513 is from 0.63 to 0.9. Specifically, the ratio range of the maximum width W4 occupied by the cylinder head 1514 to the maximum width W5 occupied by the cylinder 1513 is from 0.71 to 0.87. More specifically, the ratio of the maximum width W4 occupied by the cylinder head 1514 to the maximum width W5 occupied by the cylinder 1513 is 0.79. With such a setting, it is possible to avoid the ratio of the maximum width W4 occupied by the cylinder head 1514 to the maximum width W5 occupied by the cylinder 1513 being too large, which may cause the size of the cylinder head 1514 to be too large, thereby avoiding the interference of the over-sized cylinder head 1514 with the assembly of other components and being beneficial to improving the structural compactness at the engine 151. In addition, it is also possible to avoid the ratio of the maximum width W4 occupied by the cylinder head 1514 to the maximum width occupied by the cylinder 1513 being too small, which may cause the cylinder head 1514 to be too small, thereby avoiding reducing the layout space in the cylinder head 1514 and resulting in the distance between the two cylinder holes being too close or the two cylinder holes being too small, and further being beneficial to improving the output power of the engine 151 and enabling the engine 151 to operate normally.

[0051] As an alternative implementation, the cylinder 1513 has a cylinder axis 10m. The orthographic projection of the cylinder axis 10m on the longitudinal central plane 10s is the cylinder axis projection line. The angle κ formed by the cylinder axis projection line and the horizontal plane ranges from 50° to 60°. Specifically, the angle κ of the acute angle formed by the cylinder axis projection line and the horizontal plane ranges from 52° to 58°. More specifically, the angle κ of the acute angle formed by the cylinder axis projection line and the horizontal plane ranges from 54° to 56°. In this embodiment, the opening of the acute angle κ faces backward. Through the above settings, it is beneficial for the exhaust pipe 321 to be directly arranged backward, thereby facilitating the shortening of the overall length of the exhaust pipe 321. Also, through the above settings, it is possible to avoid an excessive acute angle κ formed by the cylinder axis projection line and the horizontal plane, which may increase the length of the exhaust pipe 321, and thus is beneficial for shortening the overall length of the exhaust pipe 321. In addition, it is also possible to avoid an overly small acute angle κ formed by the cylinder axis projection line and the horizontal plane, which may cause the cylinder head 1514 to be overly backward, thereby preventing the cylinder head 1514 from interfering with the assembly of other components due to being overly backward.

[0052] As Figure 6 As shown, as an embodiment, the body covering 12 includes a front fender 126, and the front fender 126 is used to block mud and moisture. The running gear 13 includes a front wheel 132, and the front wheel 132 is used to drive the all-terrain vehicle 100 to travel and turn. The front fender 126 is at least partially located above the front wheel 132. Also, the all-terrain vehicle 100 further includes a suspension system 14, and the suspension system 14 connects the front wheel 132 to the frame 11. The powertrain 15 includes an engine 151, and the engine 151 is at least partially disposed on the frame 11 and is in transmission connection with the front wheel 132, so that the engine 151 can provide power for the front wheel 132 to drive the engine 151 to rotate.

[0053] Specifically, the all-terrain vehicle 100 further includes a fuel assembly 17 supported by the vehicle frame 11. Among them, the fuel assembly 17 includes a fuel tank 171 for supplying energy to the engine 151. More specifically, a first plane 10j perpendicular to the length direction of the vehicle frame 11 and passing through the rotation axis of the front wheel 132 and a second plane 10k perpendicular to the height direction of the vehicle frame 11 and passing through the rotation axis of the front wheel 132 are defined. The fuel tank 171 is located behind the first plane 10j and at least partially in front of the engine 151. The fuel tank 171 is located above the second plane 10k and at least partially below the front fender 126. With such an arrangement, the fuel tank 171 can be located at the front part of the vehicle frame 11, so that the fuel tank 171 can be distributed along the length direction of the vehicle frame 11 with the engine 151, that is, the fuel tank 171 can be located in front of the engine 151 to balance the weight of the engine 151, which is beneficial to improving the body stability of the all-terrain vehicle 100. At the same time, since the fuel tank 171 is in front of the engine 151, the center of gravity height of the fuel tank 171 can be reduced, that is, the center of gravity of the fuel tank 171 can be closer to the second plane 10k, thereby reducing the center of gravity height of the all-terrain vehicle 100 and further improving the driving stability of the all-terrain vehicle 100. Moreover, the fuel tank 171 being located behind the first plane 10j can avoid the installation of the fuel tank 171 interfering with the components at the front part of the vehicle frame 11, which is beneficial to improving the working stability of the fuel tank 171 and the components at the front part of the vehicle frame 11; and the fuel tank 171 being located above the second plane 10k can avoid the fuel tank 171 interfering with the vehicle frame 11, the front wheel 132, and the suspension system 14, which is beneficial to the stable operation of the fuel tank 171, the front wheel 132, and the suspension system 14.

[0054] In addition, through the above arrangement, the fuel tank 171 can be arranged in front of the engine 151, so as to provide a layout space behind the engine 151 to avoid the exhaust pipe 321 (refer to Figure 3 ) needs to avoid the fuel tank 171 for layout at the rear part of the vehicle frame 11. Furthermore, it is beneficial for the exhaust pipe 321 to be directly arranged backward behind the engine 151, which is beneficial to shortening the length of the exhaust pipe 321.

[0055] As an implementation manner, the walking system 13 includes a rear wheel 133, and the rear wheel 133 is in transmission connection with the engine 151 so that the engine 151 can provide power for the rear wheel 133. Wherein, the minimum distance between the fuel tank 171 and the first plane 10j in the length direction of the frame 11 is the first distance D9, the distance between the rotation axis of the front wheel 132 and the rotation axis of the rear wheel 133 in the length direction of the frame 11 is the wheelbase D10, and the ratio range of the first distance D9 to the wheelbase D10 is 0.1 to 0.16. Specifically, the ratio range of the first distance D9 to the wheelbase D10 is 0.11 to 0.14. More specifically, the ratio of the first distance D9 to the wheelbase D10 is 0.13. By setting like this, it can be avoided that the ratio of the first distance D9 to the wheelbase D10 is too large, resulting in the fuel tank 171 being too far back, so as to avoid that the fuel tank 171 cannot balance the weight of the engine 151, which is beneficial to improving the body stability of the all-terrain vehicle 100; at the same time, it can also be avoided that the installation position of the fuel tank 171 is too far back, resulting in the fuel tank 171 interfering with the installation of other components, which is beneficial to improving the overall assembly coordination of the all-terrain vehicle 100, and then improving the overall structural compactness of the all-terrain vehicle 100. Secondly, it can also be avoided that the ratio of the first distance D9 to the wheelbase D10 is too small, resulting in the fuel tank 171 being too far forward, so as to avoid the installation of the fuel tank 171 interfering with the components in the front part of the frame 11, and improve the working stability of the all-terrain vehicle 100.

[0056] In addition, through the above settings, it can be avoided that the ratio of the first distance D9 to the wheelbase D10 is too large, resulting in the fuel tank 171 being set too far back, and then the engine 151 is also set too far back, so as to avoid the engine 151 being too far back and interfering with the installation of the components in the rear part of the frame 11, which is beneficial to improving the assembly coordination of the components in the rear part of the frame 11 and improving the structural compactness of the rear part of the frame 11. And, it can also be avoided that the ratio of the first distance D9 to the wheelbase D10 is too small, resulting in the fuel tank 171 being set too far forward, so as to avoid the engine 151 being set too far forward and resulting in the length of the exhaust pipe 321 being too long, so as to avoid the too long exhaust pipe 321 interfering with the assembly of other components, which is beneficial to improving the assembly coordination of the components at the exhaust pipe 321. And, it can also be avoided that the length of the exhaust pipe 321 is too long, resulting in too much heat conducted by the exhaust gas in the exhaust pipe 321 in the all-terrain vehicle 100, which is beneficial to reducing the overall temperature of the all-terrain vehicle 100 and improving the driving comfort of the all-terrain vehicle 100. At the same time, it can also be avoided that the fuel tank 171 is too far forward and interfering with the components in the front part of the frame 11, which is beneficial to the assembly coordination of the front part of the frame 11.

[0057] As an implementation manner, the acute angle κ formed by the cylinder axis 10m and the second plane 10k is arranged with the opening facing backward. With such an arrangement, along the length direction of the frame 11, the cylinder head 1514 can be arranged backward, so that the whole engine 151 can be arranged further back, and thus a layout space can be reserved for the fuel tank 171 in front of the engine 151, which is beneficial to the assembly of the fuel tank 171. In addition, through the above arrangement, the fuel tank 171 and the engine 151 can be distributed along the length direction of the frame 11, so that the fuel tank 171 can balance the weight of the engine 151, which is beneficial to improving the overall stability of the all-terrain vehicle 100.

[0058] As an implementation manner, the minimum distance between the rotation axis of the engine 151 and the rear wheel 133 along the length direction of the frame 11 is the rearward distance D11, and the ratio range of the first distance D9 to the rearward distance D11 is from 0.11 to 0.17. Specifically, the ratio range of the first distance D9 to the rearward distance D11 is from 0.13 to 0.16. More specifically, the ratio of the first distance D9 to the rearward distance D11 is 0.14. With such an arrangement, it can be avoided that the ratio of the first distance D9 to the rearward distance D11 is too large, resulting in the fuel tank 171 and the engine 151 being arranged too far back, thereby avoiding the overall center of gravity of the all-terrain vehicle 100 being too far back, which is beneficial to improving the body stability of the all-terrain vehicle 100. At the same time, it can also be avoided that the fuel tank 171 and the engine 151 are too far back, resulting in interference with the installation of other components, which is beneficial to improving the overall assembly coordination of the all-terrain vehicle 100. Secondly, it can also be avoided that the ratio of the first distance D9 to the rearward distance D11 is too small, resulting in the fuel tank 171 and the engine 151 being arranged too far forward, thereby avoiding the overall center of gravity of the all-terrain vehicle 100 being too far forward, so as to further improve the body stability of the all-terrain vehicle 100. And it can also be avoided that the fuel tank 171 and the engine 151 are too far forward, resulting in interference with the components in the front part of the frame 11, which is beneficial to improving the working stability of the all-terrain vehicle 100.

[0059] As an implementation manner, the minimum distance between the fuel tank 171 and the second plane 10k in the height direction of the vehicle frame 11 is the second distance D12, and the ratio range of the second distance D12 to the wheelbase D10 is from 0.09 to 0.15. Specifically, the ratio range of the second distance D12 to the wheelbase D10 is from 0.11 to 0.14. More specifically, the ratio of the second distance D12 to the wheelbase D10 is 0.12. With such a setting, it is possible to avoid the installation position of the fuel tank 171 being too high due to the ratio of the second distance D12 to the wheelbase D10 being too large, thereby avoiding the center of gravity of the fuel tank 171 being too high, and further being beneficial to reducing the overall center of gravity position of the all-terrain vehicle 100 to improve the body stability of the all-terrain vehicle 100. Secondly, it is also possible to avoid the installation position of the fuel tank 171 being too low due to the ratio of the second distance D12 to the wheelbase D10 being too small, thereby avoiding the fuel tank 171 interfering with the installation of other components at the bottom of the all-terrain vehicle 100, and further being beneficial to improving the overall assembly coordination of the all-terrain vehicle 100 to improve the overall structural compactness of the all-terrain vehicle 100.

[0060] As an implementation manner, the suspension system 14 includes a front shock absorber 142 and a front swing arm (not shown in the figure). The front swing arm connects the front wheel 132 to the vehicle frame 11, and the front shock absorber 142 is rotatably connected to the front swing arm and the vehicle frame 11 so that the front shock absorber 142 can provide buffering between the vehicle frame 11 and the front swing arm. The fuel tank 171 is at least partially located behind the front shock absorber 142. With such a setting, it is possible to avoid the fuel tank 171 interfering with the installation of the front shock absorber 142, thereby being beneficial to improving the assembly coordination between the fuel tank 171 and the front shock absorber 142 to improve the structural compactness at the fuel tank 171.

[0061] As an implementation manner, the all-terrain vehicle 100 includes a seat assembly 19 for the driver and passengers to sit on, and the seat assembly 19 is supported by the vehicle frame 11. The body cover 12 further includes a storage box assembly 1205 for storing items, and the storage box assembly 1205 is supported by the vehicle frame 11. Specifically, along the length direction of the vehicle frame 11, the storage box assembly 1205 is at least partially located between the front fender 126 and the seat assembly 19, and the fuel tank 171 is at least partially located below the storage box assembly 1205. In this application, since the fuel tank 171 can utilize the space in front of the engine 151, the overall height of the fuel tank 171 is lowered, so that a layout space can be reserved above the fuel tank 171, which is further beneficial to arranging a storage box assembly 1205 with a larger volume in the above layout space to improve the storage function of the storage box assembly 1205. In addition, without increasing the overall volume of the all-terrain vehicle 100, by reserving a layout space above the fuel tank 171, it is beneficial for other components to be arranged using the above layout space, thereby being beneficial to improving the space utilization rate of the all-terrain vehicle 100.

[0062] As an implementation manner, the fuel assembly 17 includes a fuel filler 172 which communicates with the fuel tank 171, so that the fuel tank 171 can be energized through the fuel filler 172. Among them, the fuel filler 172 is located on the front fender 126. In some embodiments, through holes are provided on the front fender 126, and the fuel filler 172 passes through the through holes. In the present application, at least a part of the fuel tank 171 is located below the front fender 126. Therefore, arranging the fuel filler 172 on the front fender 126 can reduce the distance between the fuel filler 172 and the fuel tank 171, which is beneficial to the fuel filler 172 energizing the fuel tank 171; and the above setting can also simplify the installation structure of the fuel filler 172 on the all-terrain vehicle 100. In some embodiments, the fuel assembly 17 further includes a fuel cap configured to cover the fuel filler 172, thereby improving the sealing performance of the fuel filler 172.

[0063] As an alternative implementation manner, the fuel filler 172 extends substantially along the direction of the preset straight line 10n. The positive projection of the preset straight line 10n on the longitudinal central plane 10s is the first projection line, and the positive projection of the second plane 10k on the longitudinal central plane 10s is the axis horizontal line. The angular range of the included angle θ formed by the first projection line and the axis horizontal line is from 20° to 90°. Specifically, the opening of the included angle is arranged backward. More specifically, the angular range of the included angle θ formed by the first projection line and the axis horizontal line is from 40° to 70°. With such a setting, it can be avoided that the included angle θ formed by the first projection line and the axis horizontal line is too small, resulting in excessive inclination of the fuel filler 172, thereby avoiding the reduction of the smoothness of refueling at the fuel filler 172, and thus being beneficial to improving the refueling efficiency of the fuel filler 172. In addition, it can also be avoided that the included angle θ formed by the first projection line and the axis horizontal line is too large, resulting in the opening of the included angle facing forward. Thus, when refueling the fuel filler 172 with a fuel gun, it can be avoided that the fuel gun interferes with the components (such as the front shelf on the front fender 126, etc.) arranged in front of the all-terrain vehicle 100, and thus it is beneficial to improve the convenience of refueling at the fuel filler 172.

[0064] In addition, through the above setting, the fuel filler 172 can be adapted to the upper surfaces of different front fenders 126, which is beneficial to improving the assembly coordination between the fuel filler 172 and the front fender 126, and thus improving the versatility of the fuel filler 172.

[0065] Such as Figure 7 and Figure 8As shown, as an implementation manner, a first fixing portion 1711, a second fixing portion 1712, and a plugging portion 1713 are provided on the fuel tank 171. Specifically, the vehicle frame 11 includes a first pipe fitting 11d in front of the fuel tank 171, a second pipe fitting 11e behind the fuel tank 171, and a support cross beam 11f below the fuel tank 171. Among them, the first fixing portion 1711 is fixedly connected to the first pipe fitting 11d, and the second fixing portion 1712 is fixedly connected to the second pipe fitting 11e. In some embodiments, the first pipe fitting 11d and the second pipe fitting 11e are distributed on both sides of the fuel tank 171 along the length direction of the vehicle frame 11, so that both sides of the fuel tank 171 can be fixed through the first fixing portion 1711 and the second fixing portion 1712, which is beneficial to improving the stability of the fuel tank 171.

[0066] In this implementation manner, the plugging portion 1713 is plugged into the support cross beam 11f. In some embodiments, a plugging port 11fa is provided on the support cross beam 11f, and the plugging port 11fa is configured to be able to be plugged with the plugging portion 1713. With such a setting, through the plugging of the plugging portion 1713 and the support cross beam 11f, the installation position of the fuel tank 171 can be limited, which is beneficial to simplifying the assembly process of the fuel tank 171 to improve the assembly efficiency of the fuel tank 171. In addition, through the above setting, the connection stability between the fuel tank 171 and the vehicle frame 11 can be further improved.

[0067] More specifically, the first fixing portion 1711 is arranged closer to the fuel filling port 172 than the second fixing portion 1712. With such a setting, the fuel tank 171 can be fixed first through the first fixing portion 1711, so that the fixing point close to the fuel filling port 172 is fixed preferentially, which is beneficial to improving the stability of the fuel filling port 172 through the first fixing portion 1711 and is beneficial to the installation of the fuel filling port 172 and the front fender 126.

[0068] In some embodiments, a protective pad 11fb is provided on one side of the support cross beam 11f close to the fuel tank 171, and the protective pad 11fb is configured to be able to provide flexible buffering for the fuel tank 171 and the support cross beam 11f. With such a setting, it can be avoided that the fuel tank 171 is in direct rigid contact with the support cross beam 11f, resulting in wear of the fuel tank 171, which is beneficial to improving the service life of the fuel tank 171. In some embodiments, the protective pad 11fb can be a rubber pad.

[0069] As Figures 9 to 13As shown, as an implementation method, the electrical component 22 includes an electronic control unit 22a (ECU). The electronic control unit 22a is supported by the frame 11 and is used to control the power output of the powertrain 15. The seat component 19 includes a seat cushion 191, which is detachably connected to the frame 11. In the present application, the seat cushion 191 is located above the powertrain 15, and the electronic control unit 22a is located between the seat cushion 191 and the powertrain 15, and when viewed from the height direction of the frame 11, the seat cushion 191 and the electronic control unit 22a at least partially overlap. Among them, since the seat cushion 191 is connected to the frame 11

[0070] The seat cushion 191 and the frame 11 are detachably connected, so through the above arrangement, the maintainability of the electronic control unit 22a can be improved when the seat cushion 191 and the frame 11 are in a detached state. In addition, the above arrangement also makes the electronic control unit 22a located in the middle of the length direction of the frame 11, so that the wiring harness arrangement between the electronic control unit 22a and the electrical components located at the front and rear sides of the all-terrain vehicle 100 is more convenient, thereby making the all-terrain vehicle 100 not need an overly long wiring harness, thereby improving the simplicity of the wiring harness.

[0071] like Figures 9 to 13 As shown, the power assembly 15 includes an engine 151, a continuously variable transmission mechanism 152 and an air filter 154. The continuously variable transmission mechanism 152 and the engine 151 are distributed along the width direction of the frame 11, and the continuously variable transmission mechanism 152 is in driving connection with the engine 151. The air filter 154 is connected to the engine 151 so that the air filter 154 can supply air to the engine 151. Along the height direction of the frame 11, the air filter 154 is at least partially located between the power assembly 15 and the seat assembly 19, and the electronic control unit 22a is located above the air filter 154. Along the length direction of the frame 11, the air filter 154 is at least partially located between the fuel tank 171 and the engine 151 (see Figure 2 ). When viewed from the height direction of the vehicle frame 11, the air filter 154 at least partially overlaps with the storage box assembly 1205.

[0072] More specifically, the engine 151 includes a cylinder 1513 and a cylinder head 1514, and the cylinder head 1514 is connected to the cylinder 1513. Among them, the cylinder head 1514 is at the rear of the cylinder 1513. The continuously variable transmission mechanism 152 includes a driving pulley 1521 and a driven pulley 1522, and the driving pulley 1521 is in transmission connection with the driven pulley 1522. At least part of the air filter 154 can be located above the driven pulley 1522, and the air filter 154 is located in front of the cylinder head 1514. When observing in the height direction of the frame 111, at least part of the air filter 154 overlaps with the driven pulley 1522, and the air filter 154 does not overlap with the engine 151. When observing in the length direction of the frame 111, at least part of the air filter 154 overlaps with the engine 151, and at least part of the air filter 154 overlaps with the fuel tank 171. Through the above arrangement, the structures of the engine 151 and the air filter 154 can be made more compact. At the same time, the layout space in front of the cylinder head 1514 can also provide a gap between the air filter 154 and the electronic control unit 22a, so that the operations of the air filter 154 and the electronic control unit 22a do not interfere with each other, thereby improving the operating stability of the air filter 154 and the electronic control unit 22a. That is, the cylinder head 1514 is arranged obliquely backward relative to the cylinder 1513, so as to increase the layout space in the front of the cylinder 1513, which is beneficial to the layout of the air filter 154.

[0073] The electronic control unit 22a is at least partially located above the engine 151 and at least partially located above the continuously variable transmission mechanism 152. The rearmost end of the continuously variable transmission mechanism 152 is in front of the rearmost end of the exhaust passage 1515.

[0074] As an alternative implementation, the connecting line of the orthographic projection of the central axis of the driving wheel 1521 on the longitudinal central plane 10s and the orthographic projection of the central axis of the driven wheel 1522 on the longitudinal central plane 10s is the projection connecting line 152a. The cylinder 1513 extends in the direction of the cylinder axis 10m, and the orthographic projection of the cylinder axis 10m on the longitudinal central plane 10s is the cylinder axis projection line. The opening of the included angle β formed by the cylinder axis projection line and the projection connecting line 152a is set towards the rear of the all-terrain vehicle 100, and the angle range of the included angle β is 35° to 75°. Specifically, the angle range of the included angle β formed by the cylinder axis projection line and the projection connecting line 152a is 40° to 70°. More specifically, the angle range of the included angle β formed by the cylinder axis projection line and the projection connecting line 152a is 45° to 65°. For example, in the present embodiment, the included angle β formed by the cylinder axis projection line and the projection connecting line 152a is 64.7°. Through the above settings, it is beneficial for the exhaust pipe 321 to be directly arranged towards the rear, thereby facilitating the shortening of the overall length of the exhaust pipe 321. And, through the above settings, it is also possible to avoid increasing the length of the exhaust pipe 321 due to the included angle β formed by the cylinder axis projection line and the projection connecting line 152a being too large, which is beneficial to shortening the overall length of the exhaust pipe 321. In addition, it is also possible to avoid the cylinder head 1514 being too far towards the rear due to the included angle β formed by the cylinder axis projection line and the projection connecting line 152a being too small, thereby avoiding the cylinder head 1514 interfering with the assembly of other components due to being too far towards the rear.

[0075] It should be understood that for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of this application.

Claims

1. An all-terrain vehicle, comprising: a frame; a running system, at least part of the running system is located below the frame, and the running system includes a front wheel; a body covering, the body covering includes a front fender, and at least part of the front fender is located above the front wheel; a suspension system, the suspension system connects the front wheel to the frame; an engine, the engine is supported by the frame and is in transmission connection with the front wheel, and the engine includes a cylinder; a storage box assembly, the storage box assembly is supported by the frame; an air filter, the air filter is connected to the engine and is connected to the engine; a fuel assembly, the fuel assembly includes a fuel tank, the fuel tank is supported by the frame and supplies fuel to the engine; a continuously variable transmission mechanism, the continuously variable transmission mechanism includes a driving wheel and a driven wheel, and the driving wheel is in transmission connection with the driven wheel; wherein, the driving wheel is located behind the driven wheel. Define a longitudinal central plane perpendicular to the width direction of the frame and passing through the midpoint of the width of the frame. The connection line of the orthographic projection of the axis center of the driving wheel on the longitudinal central plane and the orthographic projection of the axis center of the driven wheel on the longitudinal central plane is the transmission projection line. The cylinder has a cylinder axis, and the orthographic projection of the cylinder axis on the longitudinal central plane is the cylinder projection line. The included angle between the cylinder projection line and the transmission projection line opens towards the rear of the all-terrain vehicle. Define a first plane perpendicular to the length direction of the frame and passing through the rotation axis of the front wheel, and define a second plane perpendicular to the height direction of the frame and passing through the rotation axis of the front wheel. The fuel tank is located behind the first plane and at least part of it is located in front of the engine. The fuel tank is located above the second plane and at least part of it is located below the front fender. Along the length direction of the frame, at least part of the air filter is located between the fuel tank and the engine. When observing along the length direction of the frame, the air filter at least partially overlaps with the engine and the fuel tank. When observing along the height direction of the frame, the air filter at least partially overlaps with the driven wheel, and the air filter does not overlap with the engine.

2. The all-terrain vehicle according to claim 1, wherein, the running system further includes a rear wheel in transmission connection with the engine. The minimum distance between the fuel tank and the first plane along the length direction of the frame is a first distance. The distance between the rotation axis of the front wheel and the rotation axis of the rear wheel along the length direction of the frame is the wheelbase. The ratio range of the first distance to the wheelbase is 0.1 to 0.

16.

3. The all-terrain vehicle according to claim 2, wherein, the acute angle formed by the cylinder projection line and the horizontal plane ranges from 50° to 60°.

4. The all-terrain vehicle according to claim 2 or 3, wherein, the minimum distance between the engine and the rotation axis of the rear wheel along the length direction of the frame is the rear distance. The ratio range of the first distance to the rear distance is 0.11 to 0.

17.

5. The all-terrain vehicle according to claim 2, wherein the minimum distance between the fuel tank and the second plane in the height direction of the frame is a second distance, and the ratio range of the second distance to the wheelbase is from 0.09 to 0.

15.

6. The all-terrain vehicle according to claim 1, wherein the suspension system includes a front shock absorber and a front swing arm, the front swing arm connects the front wheel to the frame, the front shock absorber is rotatably connected to the front swing arm and the frame, and at least a part of the fuel tank is located behind the front shock absorber.

7. The all-terrain vehicle according to claim 1, wherein the all-terrain vehicle includes a seat assembly supported by the frame, the body covering further includes a storage box assembly supported by the frame, along the length direction of the frame, at least a part of the storage box assembly is located between the front fender and the seat assembly, and at least a part of the fuel tank is located below the storage box assembly.

8. The all-terrain vehicle according to claim 1, wherein the fuel assembly includes a fuel filling port communicated with the fuel tank, and the fuel filling port is located on the front fender.

9. The all-terrain vehicle according to claim 8, wherein the fuel filling port extends substantially along a preset straight line direction, the projection of the preset straight line on the longitudinal central plane is a first projection line, and the angle range of the angle formed by the first projection line and the horizontal plane is from 20° to 90°; the opening of the angle is arranged backward.

10. The all-terrain vehicle according to claim 8, wherein the fuel tank is provided with a first fixing part, a second fixing part and a plugging part, the first fixing part is closer to the fuel filling port than the second fixing part, the frame includes a first pipe fitting located in front of the fuel tank, a second pipe fitting located behind the fuel tank and a support cross beam located below the fuel tank, the first fixing part is fixedly connected with the first pipe fitting, the second fixing part is fixedly connected with the second pipe fitting, and the plugging part is plugged with the support cross beam.

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