All-terrain vehicle

Abstract

The all-terrain vehicle comprises a vehicle frame, a vehicle body covering part, a walking system, a suspension system, a power assembly, a seat assembly and an electric appliance assembly, and the vehicle body covering part is supported by the vehicle frame; the walking system is at least partially located below the frame; the suspension system connects the walking system to the frame; the power assembly is supported by the frame and is in transmission connection with the walking system; the seat assembly is supported by the frame; the electric appliance assembly comprises an electronic control unit used for controlling the power assembly, and the electronic control unit is supported by the frame. The seat assembly comprises a cushion detachably connected with the frame, the cushion is located above the power assembly, the electronic control unit is located between the cushion and the power assembly, and the cushion and the electronic control unit are at least partially overlapped when observed in the height direction of the frame. Through the arrangement, the electronic control unit is convenient to maintain, and wiring harness connection is simple.

Description

Technical Field

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

[0002] An all-terrain vehicle is a multi-functional vehicle designed specifically for various complex terrains. It possesses strong off-road capabilities and stability, enabling it to easily navigate challenging environments such as mud, sand, snow, and rocks.

[0003] All-terrain vehicles (ATVs) typically consist of a frame, body panels, running gear, suspension system, powertrain, and electrical components. The electrical components include an electronic control unit (ECU), which controls the powertrain's output. Because ATVs operate in harsh environments, the ECU's powertrain control requires high precision. However, as an electrical component, the ECU is prone to damage under harsh conditions, necessitating maintenance. Furthermore, the ECU requires numerous wiring harnesses to connect to electrical components at the front and rear of the ATV, resulting in a complex wiring layout. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this application is to provide an all-terrain vehicle whose electronic control unit is easy to maintain and whose wiring harness connection is simple.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] An all-terrain vehicle includes a frame, body panels, a running gear, a suspension system, a powertrain, a seat assembly, and electrical components. The body panels are supported by the frame. The running gear is at least partially located below the frame. The suspension system connects the running gear to the frame. The powertrain is supported by the frame and driven through the running gear. The seat assembly is supported by the frame. The electrical components include an electronic control unit for controlling the powertrain. The seat assembly includes a seat cushion detachably connected to the frame, located above the powertrain, and the electronic control unit is located between the seat cushion and the powertrain, with the seat cushion and the electronic control unit at least partially overlapping when viewed from the height of the frame.

[0007] Furthermore, the powertrain includes an engine and an air filter that supplies air to the engine. The air filter is connected to the engine and is located between the powertrain and the seat assembly. The electronic control unit is located above the air filter.

[0008] Furthermore, the engine includes an engine body and a cylinder block connected to the engine body, with the air filter mechanism located at least partially above the engine body and in front of the cylinder block.

[0009] Furthermore, a reference plane is defined perpendicular to the height direction of the vehicle frame. The cylinder block extends substantially along the direction of the first preset straight line, and the opening of the acute angle formed by the first preset straight line and the reference plane is set to face rearward.

[0010] Furthermore, the powertrain includes a continuously variable transmission (CVT), which is distributed along the width of the frame with the engine. The CVT is connected to the engine in a transmission manner, and the electronic control unit is located at least partially above the engine and at least partially above the CVT.

[0011] Furthermore, the running system includes a rear wheel, and the powertrain includes an engine connected to the rear wheel drive. The engine includes an exhaust manifold with its opening facing rearward. A reference plane is defined perpendicular to the height of the frame. The orthographic projection of the exhaust manifold opening onto the reference plane is the exhaust projection plane, and the orthographic projection of the rear wheel axis onto the reference plane is the rear axle projection line. The minimum distance between the exhaust projection plane and the rear axle projection line ranges from 250mm to 400mm.

[0012] Furthermore, the all-terrain vehicle includes an exhaust pipe connected to an exhaust duct, defining a longitudinal plane perpendicular to the width of the frame and substantially bisecting the frame, with the exhaust pipe located at least partially on both sides of the longitudinal plane.

[0013] Furthermore, the frame includes an upper main beam, which includes a first main beam and a second main beam distributed along the width direction of the frame. The orthographic projection of the first main beam on the reference plane is the first main beam projection plane, the orthographic projection of the second main beam on the reference plane is the second main beam projection plane, and the orthographic projection of the exhaust pipe on the reference plane is the exhaust pipe projection plane. The exhaust pipe projection plane is located between the first main beam projection plane and the second main beam projection plane.

[0014] Furthermore, the all-terrain vehicle includes a fuel tank that powers the engine, body panels that include a front fender, a running gear that includes a front wheel, a first plane that is perpendicular to the length of the frame and passes through the axis of rotation of the front wheel, and a second plane that is perpendicular to the height of the frame and passes through the axis of rotation of the front wheel. The fuel tank is located behind the first plane and at least partially in front of the engine, and above the second plane and at least partially below the front fender.

[0015] Furthermore, the minimum distance between the fuel tank and the first plane along the length of the vehicle frame is the first tank distance, and the distance between the rotation axis of the front wheel and the rotation axis of the rear wheel along the length of the vehicle frame is the wheel axle distance. The ratio of the first tank distance to the wheel axle distance ranges from 0.1 to 0.16.

[0016] The aforementioned all-terrain vehicle can place the electronic control unit under the removable seat, thereby improving the maintainability of the electronic control unit; and by placing the electronic control unit in a reasonable position on the all-terrain vehicle, the maintenance of the electronic control unit is convenient and the wiring harness connection is simple. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an all-terrain vehicle provided in an embodiment of this application.

[0018] Figure 2 A partial structural side view of an all-terrain vehicle provided in an embodiment of this application.

[0019] Figure 3 A side view of the frame, running gear, powertrain, and exhaust assembly of an all-terrain vehicle provided in an embodiment of this application.

[0020] Figure 4 A top view of the frame, running gear, powertrain, and exhaust system of an all-terrain vehicle provided in an embodiment of this application.

[0021] Figure 5 Rear view of the powertrain of an all-terrain vehicle provided in an embodiment of this application.

[0022] Figure 6 The image shows a partial structural right view of an all-terrain vehicle provided in an embodiment of this application.

[0023] Figure 7 This is an assembly diagram of the chassis and fuel system of an all-terrain vehicle provided in an embodiment of this application.

[0024] Figure 8 Examples of this application Figure 7 A magnified view of a portion of point A in the middle.

[0025] Figure 9 Exploded views of the frame, fuel system, powertrain, seat assembly, and electrical components of the all-terrain vehicle provided in the embodiments of this application.

[0026] Figure 10 A top view of the frame, fuel system, powertrain, and electrical system of an all-terrain vehicle provided in an embodiment of this application. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in specific embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0028] like Figure 1 and Figure 2As shown, this application provides an all-terrain vehicle 100, which includes a frame 11, a body panel 12, a running system 13, a suspension system 14, a powertrain 15, a transmission assembly 16, a fuel assembly 17, a seat assembly 19, and an electrical assembly 22.

[0029] To clearly illustrate the technical solution of this application, the following are also defined: Figure 1 The directions shown are front, rear, left, right, top, and bottom. In this application, the length direction of the frame 11 refers to... Figure 1 In the fore-and-aft direction, the width direction of the frame 11 refers to... Figure 1 The left and right directions in the middle, and the height direction of frame 11 refers to Figure 1 The up and down directions in the middle.

[0030] The frame 11 serves as the basic framework of the all-terrain vehicle 100, supporting the body panel 12, running gear 13, suspension system 14, powertrain 15, transmission assembly 16, fuel system 17, seat assembly 19, and electrical assembly 22. The body panel 12 is at least partially located on and connected to the frame 11, protecting the internal components of the all-terrain vehicle 100. The running gear 13 is at least partially located below the frame 11, and the suspension system 14 connects the running gear 13 to the frame 11. The powertrain 15 is drive-connected to the running gear 13; specifically, the transmission assembly 16 drives the powertrain 15 to the running gear 13. The fuel system 17 includes a fuel tank 171 for powering the powertrain 15; specifically, the fuel tank 171 supplies fuel to the powertrain 15. The electrical component 22 is supported by the frame 11, and is also supported by the body panel 12 or the frame 11. The electrical component 22 is used to display the driving data of the all-terrain vehicle 100 and control the operation of the all-terrain vehicle. The seat assembly 19 is supported by the frame 11 and is used to support the driver and / or passengers.

[0031] like Figure 3 and Figure 4 As shown, in one embodiment, the running gear 13 is at least partially located under the frame 11. The running gear 13 includes a rear wheel 133, and a suspension system 14 connects the rear wheel 133 to the frame 11. The powertrain 15 is supported by the frame 11 and is driveably connected to the rear wheel 133 to drive its movement. The all-terrain vehicle 100 also includes an exhaust assembly 32 for delivering and discharging exhaust gases generated by the powertrain 15.

[0032] The powertrain 15 includes an engine 151, which is driven to the rear wheel 133 so that the engine 151 drives the rear wheel 133 to rotate. Specifically, the engine 151 includes an exhaust manifold 1515 for discharging exhaust gases generated during engine operation and delivering the exhaust gases generated by the engine 151 to the exhaust assembly 32.

[0033] More specifically, the exhaust assembly 32 includes an exhaust pipe 321 and a muffler 322. The exhaust pipe 321 is used to transport exhaust gas, and the muffler 322 is used to reduce the noise generated when the exhaust pipe 321 transports exhaust gas. The exhaust pipe 321 is connected to the exhaust duct 1515, and the muffler 322 is connected to the exhaust pipe 321.

[0034] In this embodiment, the opening of the exhaust duct 1515 faces rearward. This arrangement allows the exhaust pipe 321, connected to the exhaust duct 1515, to be laid directly rearward, thereby shortening the overall length of the exhaust pipe 321 and reducing its cost. Secondly, this arrangement also helps to reduce the space occupied by the exhaust pipe 321 within the all-terrain vehicle 100, providing more space for other components so that the exhaust pipe 321 does not interfere with the assembly of other components, thus improving the internal structural compactness of the all-terrain vehicle 100.

[0035] Furthermore, in this application, the exhaust gas produced by engine 151 contains a large amount of heat. Therefore, through the above arrangement, the exhaust pipe 321 can be arranged rearward and its length shortened, thereby shortening the flow path of exhaust gas within the all-terrain vehicle 100. This, in turn, helps to reduce heat transfer of exhaust gas within the all-terrain vehicle 100, thus helping to lower the overall temperature of the all-terrain vehicle 100 and improve the driving comfort of the all-terrain vehicle 100. Also, in this application, the seat assembly 19 (refer to...) Figure 6 Located in front of the exhaust duct 1515, the exhaust pipe 321 can be arranged rearward, allowing it to be positioned away from the seat assembly 19. This reduces the heat transferred from the exhaust gas in the exhaust pipe 321 to the seat assembly 19, thereby further improving the driving comfort of the all-terrain vehicle 100.

[0036] In this embodiment, a reference plane 10r is defined perpendicular to the height direction of the frame 11. The orthographic projection of the exhaust duct 1515 opening onto the reference plane 10r is called the exhaust projection plane, and the orthographic projection of the rear wheel 133 axis onto the reference plane 10r is called the rear axle projection line. The minimum distance D14 between the exhaust projection plane and the rear axle projection line ranges from 250mm to 400mm. Specifically, the minimum distance D14 between the exhaust projection plane and the rear axle projection line ranges from 300mm to 350mm. More specifically, the minimum distance D14 between the exhaust projection plane and the rear axle projection line is 325mm. This setting avoids the exhaust duct 1515 being too far back due to an excessively small minimum distance D14, thus preventing the engine 151 from being too far back and thus avoiding interference from the engine 151 with the assembly of components located at the rear of the frame 11. This, in turn, improves the operational stability of the components at the rear of the frame 11. Furthermore, this design avoids an excessively large minimum distance D14 between the exhaust projection surface and the rear axle projection line, which would necessitate an excessively long exhaust pipe 321. This shortens the overall length of the exhaust pipe 321, preventing it from interfering with the assembly of other components and improving the structural compactness of the exhaust pipe 321. Simultaneously, it prevents excessive heat transfer from the exhaust gases within the all-terrain vehicle 100 due to an excessively long exhaust pipe 321, thus reducing the overall temperature of the all-terrain vehicle 100 and improving its driving comfort.

[0037] As one implementation, a longitudinal plane 10s is defined that is perpendicular to the width direction of the frame 11 and substantially bisects the frame 11. The exhaust pipe 321 is located at least partially on both sides of the longitudinal plane 10s. This arrangement allows the exhaust pipe 321 to be centrally positioned along the width direction of the frame 11, thus avoiding excessively high temperatures at the location of the exhaust pipe 321 due to it being biased to one side. In other words, there is a gap between the exhaust pipe 321 and both sides of the all-terrain vehicle 100 along the width direction. This gap can block some of the heat emitted by the exhaust pipe 321, thereby helping to reduce the overall heat of the all-terrain vehicle 100. Furthermore, the centrally positioned exhaust pipe 321 also helps to shorten the travel distance of the exhaust pipe 321 within the all-terrain vehicle 100, thus shortening the overall length of the exhaust pipe 321.

[0038] As an optional implementation, the length L6 of the exhaust pipe 321 along the length direction of the frame 11 ranges from 350mm to 600mm. Specifically, the length L6 of the exhaust pipe 321 ranges from 400mm to 550mm. More specifically, the length L6 of the exhaust pipe 321 ranges from 450mm to 500mm. This arrangement avoids the exhaust pipe 321 being too long, which would interfere with the assembly of other components, thus improving the structural compactness of the exhaust pipe 321. At the same time, it also avoids the exhaust gas in the exhaust pipe 321 transferring too much heat within the all-terrain vehicle 100 due to an excessively long length L6, thereby helping to reduce the overall temperature of the all-terrain vehicle 100 and improving the driving comfort of the all-terrain vehicle 100.

[0039] In one embodiment, the frame 11 includes an upper main beam 1131, which includes a first main beam 1131a and a second main beam 1131b, wherein the first main beam 1131a and the second main beam 1131b are distributed along the width direction of the frame 11. Specifically, the orthographic projection of the first main beam 1131a onto the reference plane 10r is the first main beam projection plane, the orthographic projection of the second main beam 1131b onto the reference plane 10r is the second main beam 1131b projection plane, and the orthographic projection of the exhaust pipe 321 onto the reference plane 10r is the exhaust pipe projection plane, which is located between the first main beam projection plane and the second main beam 1131b projection plane. This arrangement allows the exhaust pipe 321 to be located between the first main beam 1131a and the second main beam 1131b, thereby facilitating the centered placement of the exhaust pipe 321 along the width direction of the frame 11 and helping to reduce the overall heat of the all-terrain vehicle 100. Secondly, it also avoids the exhaust pipe 321 being located outside the upper main beam 1131, which would cause the exhaust pipe 321 to interfere with the installation of external components of the frame 11. In addition, it also avoids the exhaust pipe 321 being located outside the upper main beam 1131, which would prevent the frame 11 from being unable to protect the exhaust pipe 321, thereby improving the protection effect of the exhaust pipe 321 and extending its service life.

[0040] In one implementation, the suspension system 14 includes a rear swingarm 145 and a shock absorber 147. The rear swingarm 145 connects the rear wheel 133 to the frame 11, and the two ends of the shock absorber 147 are connected to the rear swingarm 145 and the frame 11, respectively, so that the shock absorber 147 can provide cushioning for the rear swingarm 145. Specifically, viewed from the width direction of the frame 11, the shock absorber 147 at least partially overlaps with the exhaust pipe 321. This arrangement avoids interference between the exhaust pipe 321 and the shock absorber 147 during assembly. Furthermore, it avoids the exhaust pipe 321 occupying the space above the shock absorber 147, thus preventing a reduction in the space available for the shock absorber 147. This allows for the placement of a larger shock absorber 147, improving its damping effect and consequently enhancing the comfort of the all-terrain vehicle 100.

[0041] In one embodiment, the exhaust pipe 321 includes a rigid pipe 3211 and a corrugated pipe 3212. The corrugated pipe 3212 is located between the two ends of the rigid pipe 3211. Specifically, the two ends of the rigid pipe 3211 are connected to the exhaust duct 1515 and the muffler 322, respectively. This arrangement allows the flexible connection of the corrugated pipe 3212 to absorb vibrations transmitted to the exhaust pipe 321 during engine 151 operation and all-terrain vehicle 100 travel, thus preventing damage to the exhaust pipe 321 due to strong vibrations and extending its service life. Furthermore, it avoids the need for connecting and sealing structures such as springs and graphite rings to connect the rigid pipe 3211 and achieve the vibration damping function of the exhaust pipe 321, simplifying the overall structure of the exhaust pipe 321 and thus simplifying the assembly process and improving assembly efficiency. In some embodiments, the bellows 3212 is welded to the rigid pipe 3211 to make the exhaust pipe 321 an integral structure, thereby improving the sealing performance of the exhaust pipe 321. Furthermore, this arrangement simplifies the sealing structure of the exhaust pipe 321, preventing leakage at the connection point with the rigid pipe 3211 and further improving its sealing performance. In addition, the flexibility of the bellows 3212 allows for angle adjustment during operation, thus improving the vibration damping effect of the exhaust pipe 321.

[0042] In this embodiment, the length L7 of the bellows 3212 ranges from 100mm to 200mm. Specifically, the length L7 of the bellows 3212 ranges from 120mm to 180mm. More specifically, the length L7 of the bellows 3212 ranges from 140mm to 160mm. This arrangement avoids the exhaust pipe 321 from having too low rigidity due to an excessively long length L7. Insufficient rigidity would lead to excessive swaying of the exhaust pipe 321 after vibration, thus preventing damage from collisions with other components and extending the service life of the exhaust pipe 321. Furthermore, it also avoids the bellows 3212 from having too short a length L7, which would result in insufficient damping and improve the overall damping effect of the exhaust pipe 321.

[0043] It should be noted that the bellows 3212 extends along a predetermined straight line 10t in its natural state, thereby avoiding the bellows 3212 from deflecting and deforming in its natural state, which would reduce the deformation characteristics of the bellows 3212 and thus avoid reducing the effect of the bellows 3212 in absorbing the vibration of the exhaust pipe 321, thus improving the vibration damping effect of the bellows 3212.

[0044] In one embodiment, the engine 151 includes an engine body 1513 and a cylinder block 1514, with the cylinder block 1514 connected to the engine body 1513. Specifically, the cylinder block 1514 has two cylinder bores (not shown), meaning the engine 151 is a twin-cylinder engine. This configuration increases the output power of the twin-cylinder engine, thereby improving the handling of the all-terrain vehicle 100.

[0045] like Figure 5 As shown, in this embodiment, the ratio of the width W4 of the cylinder block 1514 along the width direction of the frame 11 to the width W5 of the engine body 1513 along the width direction of the frame 11 ranges from 0.63 to 0.9. Specifically, the ratio of the width W4 of the cylinder block 1514 along the width direction of the frame 11 to the width W5 of the engine body 1513 along the width direction of the frame 11 ranges from 0.71 to 0.87. More specifically, the ratio of the width W4 of the cylinder block 1514 along the width direction of the frame 11 to the width W5 of the engine body 1513 along the width direction of the frame 11 is 0.79. This design avoids an excessively large cylinder block 1514, where the width W4 of the cylinder block 1514 along the width direction of the frame 11 is too large to match the width W5 of the engine block 1513 along the width direction of the frame 11. This prevents the cylinder block 1514 from interfering with the assembly of other components and improves the structural compactness of the engine 151. Furthermore, it also avoids an excessively small cylinder block 1514, where the width W4 of the cylinder block 1514 along the width direction of the frame 11 is too small to match the width W5 of the engine block 1513 along the width direction of the frame 11. This prevents the reduction of the internal space of the cylinder block 1514 from resulting in the two cylinder bores being too close together or too small, thus improving the output power of the engine 151 and ensuring its normal operation.

[0046] As an optional implementation, a longitudinal plane 109 perpendicular to the width direction of the frame 11 is defined. The cylinder block 1514 extends substantially along a preset straight line 10u. The orthographic projection of the preset straight line 10u onto the longitudinal plane 109 is the cylinder projection line, and the orthographic projection of the reference plane 10r onto the longitudinal plane 109 is a horizontal line. The acute angle κ formed by the cylinder projection line and the horizontal line ranges from 50° to 60°. Specifically, the acute angle κ formed by the cylinder projection line and the horizontal line ranges from 52° to 58°. More specifically, the acute angle κ formed by the cylinder projection line and the horizontal line ranges from 54° to 56°. In this embodiment, the opening of the acute angle κ faces rearward. This arrangement allows the exhaust pipe 321 to be directly laid rearward, thereby shortening the overall length of the exhaust pipe 321. Furthermore, this arrangement also avoids an excessively large acute angle κ between the cylinder projection line and the horizontal line, which would increase the length of the exhaust pipe 321, thus further shortening the overall length of the exhaust pipe 321. In addition, it can also prevent the acute angle κ formed by the cylinder projection line and the horizontal line from being too small, which would cause the cylinder body 1514 to be too far back, thereby preventing the cylinder body 1514 from interfering with the assembly of other parts.

[0047] like Figure 6 As shown, in one embodiment, the body panel 12 includes a front fender 126 for blocking mud and water. The running gear 13 includes a front wheel 132 for driving and steering the all-terrain vehicle 100. The all-terrain vehicle 100 also includes a suspension system 14 that connects the front wheel 132 to the frame 11. The powertrain 15 includes an engine 151 supported by the frame 11 and driven by the front wheel 132, allowing the engine 151 to provide power to the front wheel 132 to drive its rotation.

[0048] Specifically, the all-terrain vehicle 100 also includes a fuel assembly 17, which is supported by the frame 11. The fuel assembly 17 includes a fuel tank 171 for powering the engine 151. More specifically, a first plane 10j perpendicular to the length of the frame 11 and passing through the axis of rotation of the front wheel 132, and a second plane 10k perpendicular to the height of the frame 11 and passing through the axis of rotation 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, and above the second plane 10k and at least partially below the front fender 126. This configuration allows the fuel tank 171 to be located at the front of the frame 11, enabling it to be distributed along the length of the frame 11 with the engine 151. This placement in front of the engine helps balance its weight, improving the overall stability of the all-terrain vehicle 100. Furthermore, the location of the fuel tank in front of the engine lowers its center of gravity, bringing it closer to the second plane 10k, thus further enhancing the vehicle's stability. Furthermore, the fact that the fuel tank 171 is located behind the first plane 10j can prevent the installation of the fuel tank 171 from interfering with the components at the front of the frame 11, thereby improving the working stability of the fuel tank 171 and the components at the front of the frame 11; and the fact that the fuel tank 171 is located above the second plane 10k can prevent the fuel tank 171 from interfering with the frame 11, the front wheel 132, and the suspension system 14, thereby improving the stable operation of the fuel tank 171, the front wheel 132, and the suspension system 14.

[0049] Furthermore, with the above arrangement, the fuel tank 171 can be positioned in front of the engine 151, thereby providing space behind the engine 151 to avoid the exhaust pipe 321 (see reference). Figure 3 The rear of the frame 11 needs to be arranged to avoid the fuel tank 171, which facilitates the exhaust pipe 321 to be arranged directly behind the engine 151, thus shortening the length of the exhaust pipe 321.

[0050] In one implementation, the walking system 13 includes a rear wheel 133, which is drive-connected to an engine 151 so that the engine 151 can provide power to the rear wheel 133. The minimum distance between the fuel tank 171 and the first plane 10j along the length of the frame 11 is defined as the first tank distance D9. The distance between the rotation axis of the front wheel 132 and the rotation axis of the rear wheel 133 along the length of the frame 11 is defined as the axle distance D10. The ratio of the first tank distance D9 to the axle distance D10 ranges from 0.1 to 0.16. Specifically, the ratio of the first tank distance D9 to the axle distance D10 ranges from 0.11 to 0.14. More specifically, the ratio of the first tank distance D9 to the axle distance D10 is 0.13. This configuration avoids an excessively large ratio between the distance from the first housing to D9 and the axle distance to D10, which would cause the fuel tank 171 to be positioned too far back. This prevents the fuel tank 171 from failing to balance the weight of the engine 151, thus improving the vehicle's stability. It also prevents the fuel tank 171 from being installed too far back, which would interfere with the installation of other components, improving the overall assembly coordination and structural compactness of the all-terrain vehicle 100. Furthermore, it avoids an excessively small ratio between the distance from the first housing to D9 and the axle distance to D10, which would cause the fuel tank 171 to be positioned too far forward. This prevents the fuel tank 171 from interfering with the components at the front of the frame 11, thus improving the operational stability of the all-terrain vehicle 100.

[0051] Furthermore, the above arrangement avoids an excessively large ratio between the distance from the first housing to D9 and the axle distance to D10, which would cause the fuel tank 171 to be positioned too far back, resulting in the engine 151 also being positioned too far back. This prevents the engine 151 from interfering with the installation of components at the rear of the frame 11, thereby improving the assembly coordination of the components at the rear of the frame 11 and enhancing the structural compactness of the rear of the frame 11. Additionally, it also avoids an excessively small ratio between the distance from the first housing to D9 and the axle distance to D10, which would cause the fuel tank 171 to be positioned too far forward. This prevents the engine 151 from being positioned too far forward, resulting in an excessively long exhaust pipe 321. This prevents the excessively long exhaust pipe 321 from interfering with the assembly of other components, thereby improving the assembly coordination of components at the exhaust pipe 321. Furthermore, this design also prevents excessive heat transfer from the exhaust pipe 321 within the all-terrain vehicle 100 due to its excessive length, thus helping to reduce the overall temperature of the all-terrain vehicle 100 and improve its driving comfort. Simultaneously, it also prevents the fuel tank 171 from being positioned too far forward, which could interfere with the components at the front of the frame 11, thereby improving the assembly coordination of the front of the frame 11.

[0052] In one embodiment, the engine 151 includes an engine body 1513 and a cylinder block 1514. The cylinder block 1514 is connected to the engine body 1513 and extends substantially along a first predetermined straight line 10m. The acute angle η formed by the first predetermined straight line 10m and the second plane 10k is set rearward. This arrangement allows the cylinder block 1514 to be positioned rearward along the length of the frame 11, enabling the engine 151 to be positioned further back. This provides space in front of the engine 151 for the fuel tank 171, facilitating its assembly. Furthermore, this arrangement allows the fuel tank 171 and the engine 151 to be distributed along the length of the frame 11, enabling the fuel tank 171 to balance the weight of the engine 151 and improving the overall stability of the all-terrain vehicle 100.

[0053] In one implementation, the minimum distance between the rotation axes of the engine 151 and the rear wheel 133 along the length of the frame 11 is the rear distance D11, and the ratio of the first housing distance D9 to the rear distance D11 ranges from 0.11 to 0.17. Specifically, the ratio of the first housing distance D9 to the rear distance D11 ranges from 0.13 to 0.16. More specifically, the ratio of the first housing distance D9 to the rear distance D11 is 0.14. This arrangement avoids the fuel tank 171 and engine 151 being positioned too far back due to an excessively large ratio of the first housing distance D9 to the rear distance D11, thus preventing the overall center of gravity of the all-terrain vehicle 100 from being too far back, which is beneficial to improving the vehicle's stability. At the same time, it also avoids the fuel tank 171 and engine 151 interfering with the installation of other components due to being too far back, thereby improving the overall assembly coordination of the all-terrain vehicle 100. Secondly, this design also avoids the fuel tank 171 and engine 151 being positioned too far forward due to an excessively small ratio between the distance D9 from the first housing and the rear distance D11, thus preventing the overall center of gravity of the all-terrain vehicle 100 from being too far forward and further improving the vehicle's stability. Furthermore, it also prevents the fuel tank 171 and engine 151 from interfering with the front components of the frame 11 due to their forward positioning, thereby contributing to improved operational stability of the all-terrain vehicle 100.

[0054] In one implementation, the minimum distance between the fuel tank 171 and the second plane 10k along the height direction of the frame 11 is the second housing distance D12, and the ratio of the second housing distance D12 to the axle distance D10 ranges from 0.09 to 0.15. Specifically, the ratio of the second housing distance D12 to the axle distance D10 ranges from 0.11 to 0.14. More specifically, the ratio of the second housing distance D12 to the axle distance D10 is 0.12. This setting avoids the fuel tank 171 from being installed too high due to an excessively large ratio of the second housing distance D12 to the axle distance D10, thereby preventing the center of gravity of the fuel tank 171 from being too high. This, in turn, helps to lower the overall center of gravity of the all-terrain vehicle 100, thereby improving the vehicle's stability. Secondly, it can also avoid the fuel tank 171 being installed too low due to the ratio of the distance between the second housing and the wheel axle distance D10 being too small. This avoids the fuel tank 171 interfering with the installation of other components at the bottom of the all-terrain vehicle 100, which in turn helps to improve the overall assembly coordination of the all-terrain vehicle 100 and improve the overall structural compactness of the all-terrain vehicle 100.

[0055] In one embodiment, the suspension system 14 includes a front shock absorber 142 and a front swing arm (not shown). The front swing arm connects the front wheel 132 to the frame 11, and the front shock absorber 142 rotatably connects the front swing arm and the frame 11, so that the front shock absorber 142 can provide cushioning between the frame 11 and the front swing arm. The fuel tank 171 is at least partially located behind the front shock absorber 142. This arrangement avoids the fuel tank 171 interfering with the installation of the front shock absorber 142, thereby improving the assembly compatibility between the fuel tank 171 and the front shock absorber 142 and improving the structural compactness at the fuel tank 171 location.

[0056] In one embodiment, the all-terrain vehicle 100 includes a seat assembly 19 for seating the driver and passengers, and the seat assembly 19 is supported by a frame 11. The body panel 12 also includes a storage compartment assembly 1205 for storage, and the storage compartment assembly 1205 is supported by the frame 11. Specifically, along the length of the frame 11, the storage compartment 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 compartment assembly 1205. In this application, because the fuel tank 171 can utilize the space in front of the engine 151, the overall height of the fuel tank 171 is lowered, thereby reserving space above the fuel tank 171. This allows for the placement of a larger volume storage compartment assembly 1205 within this space, thus improving the storage function of the storage compartment assembly 1205. Furthermore, without increasing the overall size of the all-terrain vehicle 100, by reserving space above the fuel tank 171, other components can be arranged in the aforementioned space, thereby improving the space utilization rate of the all-terrain vehicle 100.

[0057] In one embodiment, the fuel assembly 17 includes a filler neck 172, which communicates with the fuel tank 171, allowing the fuel tank 171 to be charged via the filler neck 172. The filler neck 172 is located on the front fender 126. In some embodiments, the front fender 126 has a through hole, through which the filler neck 172 passes. In this application, the fuel tank 171 is at least partially located below the front fender 126; therefore, placing the filler neck 172 on the front fender 126 reduces the distance between the filler neck 172 and the fuel tank 171, thus facilitating the charging of the fuel tank 171 by the filler neck 172. Furthermore, this arrangement simplifies the installation structure of the filler neck 172 on the all-terrain vehicle 100. In some embodiments, the fuel assembly 17 also includes a filler cap configured to cover the filler neck 172, thereby improving the sealing performance of the filler neck 172.

[0058] As an optional implementation, a longitudinal plane 109 perpendicular to the width direction of the frame 11 is defined. The filler neck 172 extends substantially along the direction of the second preset straight line 10n. The orthographic projection of the second preset straight line 10n onto the longitudinal plane 109 is the filler neck projection line, and the orthographic projection of the second plane 10k onto the longitudinal plane 109 is the horizontal axis line. The angle θ between the filler neck projection line and the horizontal axis line ranges from 20° to 90°. Specifically, the opening of the angle is set to face rearward. More specifically, the angle θ between the filler neck projection line and the horizontal axis line ranges from 40° to 70°. This setting can avoid the filler neck 172 from being overly tilted due to an excessively small angle θ between the filler neck projection line and the horizontal axis line, thereby avoiding a reduction in the smoothness of filler neck 172 filling and thus improving the filling efficiency of filler neck 172. In addition, it can also avoid the angle θ between the refueling projection line and the horizontal axis being too large, which would cause the opening of the angle to face forward. Thus, when the refueling nozzle refuels into the refueling port 172, it can avoid interference between the refueling nozzle and the components located in front of the all-terrain vehicle 100 (such as the front rack on the front fender 126), thereby improving the convenience of refueling through the refueling port 172.

[0059] Furthermore, the above-mentioned configuration allows the filler neck 172 to be adapted to the upper surface of different front fenders 126, thereby improving the assembly coordination between the filler neck 172 and the front fender 126, and thus improving the versatility of the filler neck 172.

[0060] like Figure 7 and Figure 8 As shown, in one embodiment, the fuel tank 171 is provided with a first fixing part 1711, a second fixing part 1712, and a plug-in part 1713. Specifically, the frame 11 includes a first pipe 11d located in front of the fuel tank 171, a second pipe 11e located behind the fuel tank 171, and a support crossbeam 11f located below the fuel tank 171. The first fixing part 1711 is fixedly connected to the first pipe 11d, and the second fixing part 1712 is fixedly connected to the second pipe 11e. In some embodiments, the first pipe 11d and the second pipe 11e are distributed along the length of the frame 11 on both sides of the fuel tank 171, thereby fixing both sides of the fuel tank 171 through the first fixing part 1711 and the second fixing part 1712, which helps to improve the stability of the fuel tank 171.

[0061] In this embodiment, the insertion part 1713 is inserted into the support beam 11f. In some embodiments, the support beam 11f is provided with an insertion interface 11fa, which is configured to clamp with a clamping part. This configuration allows the insertion of the insertion part 1713 into the support beam 11f to limit the installation position of the fuel tank 171, thereby simplifying the assembly process of the fuel tank 171 and improving its assembly efficiency. Furthermore, the above configuration further enhances the connection stability between the fuel tank 171 and the vehicle frame 11.

[0062] More specifically, the first fixing part 1711 is positioned closer to the fuel filler neck 172 than the second fixing part 1712. This arrangement allows the fuel tank 171 to be fixed first via the first fixing part 1711, prioritizing the fixing point closer to the fuel filler neck 172. This improves the stability of the fuel filler neck 172 via the first fixing part 1711, facilitating the installation of the fuel filler neck 172 and the front fender 126.

[0063] In some embodiments, a protective pad 11fb is provided on the side of the support beam 11f near the fuel tank 171. The protective pad 11fb is configured to provide flexible cushioning for the fuel tank 171 and the support beam 11f. This configuration avoids direct rigid contact between the fuel tank 171 and the support beam 11f, preventing wear on the fuel tank 171 and thus improving its service life. In some embodiments, the protective pad 11fb can be a rubber pad.

[0064] like Figure 9 and Figure 10 As shown, in one implementation, the electrical assembly 22 includes an Electronic Control Unit (ECU) 22a. The ECU 22a is supported by the frame 11 and controls the power output of the powertrain 15. The seat assembly 19 includes a seat cushion 191, which is detachably connected to the frame 11. In this application, the seat cushion 191 is located above the powertrain 15, and the ECU 22a is located between the seat cushion 191 and the powertrain 15. Viewed from the height of the frame 11, the seat cushion 191 and the ECU 22a at least partially overlap. Because the seat cushion 191 is detachably connected to the frame 11, this arrangement improves the maintainability of the ECU 22a when the seat cushion 191 is detached from the frame 11. In addition, the above-mentioned arrangement also places the electronic control unit 22a in the middle of the length of the all-terrain vehicle 100, which makes it easier to arrange the wiring harness between the electronic control unit 22a and the electrical components located at the front and rear sides of the all-terrain vehicle 100, thereby reducing the need for excessively long wiring harnesses in the all-terrain vehicle 100 and improving the simplicity of the wiring harness.

[0065] Specifically, the powertrain 15 includes an engine 151 and an air filter 154 connected to the engine 151 so that the air filter 154 can supply air to the engine 151. The air filter 154 is located between the powertrain 15 and the seat assembly 19, and the electronic control unit 22a is located above the air filter 154.

[0066] More specifically, the engine 151 includes an engine body 1513 and a cylinder block 1514, with the cylinder block 1514 connected to the engine body 1513. The cylinder block 1514 is located at the rear of the engine body 1513, thus providing space above the front of the engine body 1513 for arranging an air filter mechanism 154. Specifically, the air filter mechanism 154 can be at least partially located above the engine body 1513, and is positioned in front of the cylinder block 1514. This arrangement allows for a more compact structure of the engine 151 and the air filter mechanism 154. Furthermore, the space above the front of the engine body 1513 allows for a gap between the air filter mechanism 154 and the electronic control unit 22a, ensuring that their operation does not interfere with each other and improving their operational stability.

[0067] A reference plane 102 is defined perpendicular to the height direction of the frame 11. The cylinder block 1514 extends substantially along the direction of a first preset straight line 1514a, and the opening of the acute angle formed by the first preset straight line 1514a and the reference plane 102 is set to face rearward. That is, the cylinder block 1514 is set obliquely rearward relative to the engine body 1513, thereby increasing the arrangement space in front of the engine body 1513, which is beneficial to the arrangement of the air filter mechanism 154.

[0068] In this embodiment, the powertrain 15 includes a continuously variable transmission (CVT) 152, which is distributed along the width of the frame 11 with the engine 151. The CVT 152 is connected to the engine 151 in a transmission manner. The electronic control unit 22a is located at least partially above the engine 151 and at least partially above the CVT 152.

[0069] 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, the body panel being supported by the vehicle frame; A walking system, at least partially located below the vehicle frame; A suspension system that connects the running gear to the vehicle frame; A powertrain, which is supported by the vehicle frame and is connected in transmission to the running gear; A seat assembly, the seat assembly being supported by the vehicle frame; Electrical components, including an electronic control unit for controlling the powertrain; Its features are, The seat assembly includes a seat cushion detachably connected to the frame, the seat cushion being positioned above the powertrain, the electronic control unit being positioned between the seat cushion and the powertrain, and the seat cushion and the electronic control unit at least partially overlapping when viewed from the height of the frame.

2. The all-terrain vehicle according to claim 1, characterized in that, The powertrain includes an engine and an air filter that supplies air to the engine. The air filter is connected to the engine and is located between the powertrain and the seat assembly. The electronic control unit is located above the air filter.

3. The all-terrain vehicle according to claim 2, characterized in that, The engine includes an engine body and a cylinder block connected to the engine body, and the air filter is located at least partially above the engine body and in front of the cylinder block.

4. The all-terrain vehicle according to claim 3, characterized in that, Define a reference plane perpendicular to the height direction of the vehicle frame. The cylinder block extends substantially along a first preset straight line, and the opening of the acute angle formed by the first preset straight line and the reference plane is set to face rearward.

5. The all-terrain vehicle according to claim 2, characterized in that, The powertrain includes a continuously variable transmission (CVT) that is distributed along the width of the vehicle frame with the engine. The CVT is drive-connected to the engine. The electronic control unit is located at least partially above the engine and at least partially above the CVT.

6. The all-terrain vehicle according to claim 1, characterized in that, The walking system includes a rear wheel, and the powertrain includes an engine that is driven by the rear wheel. The engine includes an exhaust manifold with its opening facing rearward. A reference plane is defined that is perpendicular to the height direction of the frame. The orthographic projection of the opening of the exhaust manifold onto the reference plane is the exhaust projection plane. The orthographic projection of the axis of the rear wheel onto the reference plane is the rear axle projection line. The minimum distance between the exhaust projection plane and the rear axle projection line is in the range of 250mm to 400mm.

7. The all-terrain vehicle according to claim 6, characterized in that, The all-terrain vehicle includes an exhaust pipe connected to the exhaust duct, defining a longitudinal plane perpendicular to the width direction of the frame and substantially bisecting the frame, with the exhaust pipe located at least partially on both sides of the longitudinal plane.

8. The all-terrain vehicle according to claim 7, characterized in that, The frame includes an upper main beam, which includes a first main beam and a second main beam distributed along the width direction of the frame. The orthographic projection of the first main beam on the reference plane is the first main beam projection plane, and the orthographic projection of the second main beam on the reference plane is the second main beam projection plane. The orthographic projection of the exhaust pipe on the reference plane is the exhaust pipe projection plane, and the exhaust pipe projection plane is located between the first main beam projection plane and the second main beam projection plane.

9. The all-terrain vehicle according to claim 6, characterized in that, The all-terrain vehicle includes a fuel tank that powers the engine, the body panels include a front fender, the running gear includes a front wheel, a first plane is defined perpendicular to the length of the frame and passing through the axis of rotation of the front wheel, and a second plane is defined perpendicular to the height of the frame and passing through the axis of rotation of the front wheel. The fuel tank is located behind the first plane and at least partially in front of the engine, and above the second plane and at least partially below the front fender.

10. The all-terrain vehicle according to claim 9, characterized in that, The minimum distance between the fuel tank and the first plane along the length of the vehicle frame is the first tank distance. The distance between the rotation axis of the front wheel and the rotation axis of the rear wheel along the length of the vehicle frame is the wheel axle distance. The ratio of the first tank distance to the wheel axle distance is in the range of 0.1 to 0.16.

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