All-terrain vehicle

Abstract

The all-terrain vehicle comprises a vehicle frame, a vehicle body covering part, a walking system, a transmission system and a power device, a speed change assembly comprises a gear speed change assembly and a stepless speed change assembly, an engine is supported by the vehicle frame, and the engine comprises a crankshaft in transmission connection with the stepless speed change assembly; the rotating center line of the crankshaft extends in the length direction of the frame. The engine defines a longitudinal plane and comprises an air cylinder, a piston and a crankshaft, and the axis of the air cylinder is obliquely arranged relative to the longitudinal plane. The transmission system further comprises a transmission shaft, one end of the transmission shaft is in transmission connection with the gear change assembly, the other end of the transmission shaft is in transmission connection with the front drive axle, an included angle is formed between the rotation center line of the transmission shaft and the longitudinal plane, and the range of the included angle is 2-10 degrees. By means of the arrangement mode, the layout compactness of the power device of the all-terrain vehicle is good.

Description

Technical Field

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

[0002] This utility model relates to the field of vehicle technology, and in particular to an all-terrain vehicle (ATV). An ATV is a vehicle capable of traversing various complex terrains (such as mountains, deserts, and mud), and is widely used in agriculture, forestry, military, and leisure activities. Existing ATVs typically employ traditional mechanical transmission systems, including components such as clutches, gearboxes, and drive shafts. While these transmission systems can meet the driving requirements of ATVs to a certain extent, they still have some significant problems.

[0003] Traditional all-terrain vehicles have complex transmission systems that occupy a lot of space, resulting in a less compact overall vehicle layout and affecting the vehicle's lightweight design and maneuverability. 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 with a compact overall layout.

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

[0006] An all-terrain vehicle includes a frame; a body panel, a running gear, a transmission system, and a power unit. The body panel is at least partially connected to the frame. The running gear includes a pair of front wheels distributed along the width direction of the all-terrain vehicle. The transmission system includes a front drive axle located between the pair of front wheels and drivenly connected to the front wheels. The power unit includes a transmission assembly and a powertrain. The transmission assembly includes a geared transmission assembly and a continuously variable transmission (CVT) assembly, the geared transmission assembly being drivenly connected to the CVT assembly. The powertrain includes an engine, the engine including a piston, a crankshaft, and a cylinder for housing the piston, the piston being drivenly connected to the crankshaft. The crankshaft is connected to the continuously variable transmission (CVT) assembly. The rotation centerline of the crankshaft extends along the length of the vehicle frame. A longitudinal plane is defined that is perpendicular to the width direction of the all-terrain vehicle and passes through the center of the width of the all-terrain vehicle. When viewed along the length direction of the all-terrain vehicle, the cylinder axis is arranged at an angle relative to the longitudinal plane. The gear transmission assembly is located at the rear of the vehicle frame. The transmission system also includes a driveshaft. One end of the driveshaft is connected to the gear transmission assembly, and the other end of the driveshaft is connected to the front drive axle. The rotation centerline of the driveshaft forms an angle α with the longitudinal plane, and the angle α ranges from 2° to 10°.

[0007] Furthermore, when viewed along the length of the all-terrain vehicle, the angle β between the cylinder axis and the longitudinal plane ranges from 10° to 55°.

[0008] Furthermore, the engine, continuously variable transmission (CVT) assembly, and gear transmission assembly are distributed along the length of the all-terrain vehicle.

[0009] Furthermore, the continuously variable transmission (CVT) assembly includes a drive pulley and a driven pulley, and a reference line is defined that extends in the same direction as the rotation center line of the drive pulley. The distance between the reference line and the rotation center line of the drive pulley and the driven pulley is the same. The gear transmission assembly and the engine are located on the same side of the reference line. When viewed along the height direction of the all-terrain vehicle, the drive shaft and the engine at least partially overlap.

[0010] Furthermore, the continuously variable transmission (CVT) assembly includes a driving pulley and a driven pulley, and a reference line is defined that extends in the same direction as the rotation center line of the driving pulley. The distance between the reference line and the rotation center line of the driving pulley and the driven pulley is the same. The gear transmission assembly is located on one side of the reference line, and the engine is located on the other side of the reference line.

[0011] Furthermore, the all-terrain vehicle also includes a fuel tank for storing fuel and a battery for storing power, with the fuel tank and battery located on the side of the longitudinal plane away from the engine.

[0012] Furthermore, the gear transmission assembly and the engine are distributed along the width direction of the all-terrain vehicle, with the engine at least partially located in front of the continuously variable transmission assembly and / or the gear transmission assembly; viewed along the length direction of the all-terrain vehicle, the gear transmission assembly and the engine at least partially overlap.

[0013] Furthermore, the gear transmission assembly and the engine are distributed along the width direction of the all-terrain vehicle, with the engine at least partially located behind the continuously variable transmission assembly and / or the gear transmission assembly; viewed along the length direction of the all-terrain vehicle, the gear transmission assembly and the engine at least partially overlap.

[0014] Furthermore, the continuously variable transmission (CVT) assembly includes a drive pulley and a driven pulley. The drive pulley is connected to the engine for transmission, and the driven pulley is connected to the gear transmission assembly for transmission. A transmission component is sleeved between the drive pulley and the driven pulley, and the drive pulley and the driven pulley are connected for transmission through the transmission component, which is a steel belt or steel chain.

[0015] Furthermore, the transmission system also includes a rear drive axle and a rear drive shaft, the rear drive shaft being located between the gear transmission assembly and the rear drive axle and being drively connected to the gear transmission assembly and the rear drive axle respectively, and the engine being at least partially located above the rear drive shaft.

[0016] To achieve the above objectives, this application places the engine at a certain angle relative to the longitudinal plane of the vehicle, effectively reducing the space occupied by the engine in the height direction of the all-terrain vehicle. Furthermore, the driveshaft is offset to accommodate the arrangement of the gear transmission components, freeing up more space for the overall vehicle layout and resulting in a more compact design. Attached Figure Description

[0017] Figure 1 A perspective view of an all-terrain vehicle provided in an embodiment of this application;

[0018] Figure 2 A schematic diagram illustrating the installation of the chassis and powertrain of an all-terrain vehicle provided in an embodiment of this application;

[0019] Figure 3 A half-sectional view of the transmission assembly and powertrain of the all-terrain vehicle provided in the embodiments of this application;

[0020] Figure 4 A perspective structural diagram of a first arrangement of the powertrain and transmission assembly of an all-terrain vehicle provided in an embodiment of this application;

[0021] Figure 5 A schematic diagram of the transmission connection principle of the first arrangement of the powertrain and transmission assembly of the all-terrain vehicle provided in the embodiments of this application;

[0022] Figure 6 A schematic diagram of the transmission connection principle of a second arrangement of the powertrain and transmission assembly of an all-terrain vehicle provided in an embodiment of this application;

[0023] Figure 7 A perspective structural diagram of a third arrangement of the powertrain and transmission assembly of an all-terrain vehicle provided in an embodiment of this application;

[0024] Figure 8 A schematic diagram of the transmission connection principle of a third arrangement of the powertrain and transmission assembly of an all-terrain vehicle provided in an embodiment of this application;

[0025] Figure 9 A perspective structural diagram of a fourth arrangement of the powertrain and transmission assembly of an all-terrain vehicle provided in an embodiment of this application;

[0026] Figure 10 A three-dimensional structural diagram of a fifth arrangement of the powertrain and transmission assembly of an all-terrain vehicle provided in the embodiments of this application;

[0027] Figure 11 A three-dimensional structural diagram of the tilted engine arrangement of an all-terrain vehicle provided in an embodiment of this application;

[0028] Figure 12A three-dimensional structural diagram of the transmission structure of an all-terrain vehicle with a rear drive shaft provided in an embodiment of this application;

[0029] Figure 13 A schematic diagram illustrating the transmission connection principle of an all-terrain vehicle with a rear drive shaft as provided in an embodiment of this application. Detailed Implementation

[0030] 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.

[0031] like Figure 1 and Figure 2 As shown, this application provides an all-terrain vehicle 100, which includes a frame 11, body panels 12, a running gear 13, a power unit 14, and an electrical system 15 (see...). Figure 2 The vehicle includes a drivetrain 16. The running gear 13 is at least partially located below and supports the frame 11, which is in contact with the ground via the running gear 13. A body panel 12 is at least partially located above and fixedly connected to the frame 11, covering components such as the power unit 14 and electrical system 15. The power unit 14 is located below the body panel 12 and is at least partially fixedly connected to the frame 11. The power unit powertrain 141 is also connected to the running gear 13 via the drivetrain 16, ultimately transmitting the driving force generated by the power unit powertrain 141 to the running gear 13 to drive the all-terrain vehicle 100.

[0032] For ease of reference, terms such as Figure 1 and Figure 2 The front-back, left-right, and up-down directions shown in the description of this application refer to the length direction of the all-terrain vehicle 100. Figure 1 The front-to-back direction shown in the figure corresponds to the width direction of the all-terrain vehicle 100. Figure 1 The left-right direction shown in the figure corresponds to the height direction of the all-terrain vehicle 100. Figure 1 The up and down directions are shown in the diagram.

[0033] like Figure 2 and Figure 3As shown, the power unit 14 includes a powertrain 141 and a transmission assembly 142. Specifically, the powertrain 141 includes an engine 1411, which provides power for the operation of the all-terrain vehicle 100. The transmission assembly 142 includes a continuously variable transmission (CVT) assembly 1421 and a gear transmission assembly 1422. The CVT assembly 1421 is used to change the speed and torque output of the engine 1411, providing different gear ratios to adapt to different driving conditions. The gear transmission assembly 1422 is used to reduce the speed of the all-terrain vehicle 100 and increase the torque, typically used to convert high-speed, low-torque power into low-speed, high-torque output. The CVT assembly 1421 is connected to both the engine 1411 and the gear transmission assembly 1422, transmitting the driving force generated by the engine 1411 to the gear transmission assembly 1422 after a certain speed ratio change. The all-terrain vehicle 100 also includes a differential D1 (see...). Figure 5 As an alternative implementation, the differential D1 is located within the gear transmission assembly 1422, which is also connected to at least a portion of the drive system 13 via the differential D1. Specifically, the drive system 16 includes a pair of drive shafts 161. The drive system 13 includes a pair of front wheels 131 and rear wheels 132. The drive shafts 161 are at least partially located between the left and right rear wheels 132 and the gear transmission assembly 1422, for drivingly connecting the gear transmission assembly 1422 to the rear wheels 132 and transmitting the driving force generated by the engine 1411 to the rear wheels 132.

[0034] like Figure 2 As shown, the frame 11 includes a bottom bracket 111 extending substantially along the width direction of the all-terrain vehicle 100 and a support bracket 112 extending substantially along the height direction of the all-terrain vehicle 100. As an optional embodiment, the support bracket 112 includes a first support bracket 1121 and a second support bracket 1122 distributed from front to rear along the length direction of the all-terrain vehicle 100. The first support bracket 1121 is located at the front end of the frame 11 and is used to mount components such as the steering assembly and instrument panel of the all-terrain vehicle 100. The second support bracket 1122 is located in the middle or rear of the frame 11. The first support bracket 1121, the second support bracket 1122, and the bottom bracket 111 together form a receiving space. The frame 11 also includes a chassis 113, which is a plate-shaped support member and is fixedly connected to the bottom bracket 111. The chassis 113 is used to carry the components of the all-terrain vehicle 100, and at least a portion of the chassis 113 together with at least a portion of the body panel 12, the first support bracket 1121 and the second support bracket 1122 constitute the cab of the all-terrain vehicle 100.

[0035] In the description of this application, "front part of frame 11" refers to the portion of frame 11 located in front of the first support bracket 1121; "rear part of frame 11" refers to the portion of frame 11 located behind the second support bracket 1122.

[0036] like Figure 3 As shown, in one optional implementation, the continuously variable transmission (CVT) assembly 1421 includes an input shaft 1421a and a drive pulley 1421b fixedly connected to the input shaft 1421a. The CVT assembly 1421 also includes an output shaft 1421c and a driven pulley 1421d fixedly connected to the output shaft 1421c. Specifically, the input shaft 1421a is connected to the crankshaft 1411a of the engine 1411 (see...). Figure 4 The output shaft 1421c is connected to the gear transmission assembly 1422 via a transmission connection. In one specific embodiment, a clutch 1421e (see [link to clutch]) is also provided between the input shaft 1421a and the crankshaft 1411a. Figure 5 This is used to interrupt or connect the transmission of driving force between the crankshaft 1411a and the continuously variable transmission (CVT) assembly 1421. The drive pulley 1421b and the driven pulley 1421d are connected by a transmission component 1421f. Specifically, the transmission component 1421f is a closed steel belt composed of multiple thin steel sheets and steel rings. One end of the steel belt is fitted onto the drive pulley 1421b, and the other end is fitted onto the driven pulley 1421d, used to transmit driving force between the drive pulley 1421b and the driven pulley 1421d. The steel belt is flexible and durable, better suited to the extreme driving conditions of the all-terrain vehicle 100 in this application. Of course, in other embodiments, the transmission component 1421f can also be a steel chain composed of multiple links. This type of transmission component 1421f has high strength and is suitable for high torque.

[0037] like Figures 3 to 5As shown, the transmission assembly 142 includes a housing 143. The continuously variable transmission (CVT) assembly 1421 and the gear transmission assembly 1422 are both located within the housing 143 of the transmission assembly 142. The engine 1411 communicates with the receiving space of the housing 143 of the transmission assembly 142, and the engine 1411 and the housing 143 of the transmission assembly 142 are fixedly connected, together forming a substantially enclosed receiving space. The crankshaft 1411a of the engine 1411 is substantially connected to the transmission assembly 142 through this receiving space. Optionally, the entire assembly formed by the engine 1411 and the housing 143 of the transmission assembly 142 is located behind the second support bracket 1122, and is at least partially supported by a bottom bracket 111 located behind the second support bracket 1122. The transmission system 16 also includes a front drive axle 163 located at the front of the frame 11. The front drive axle 163 is located in front of the first support bracket 1121. Specifically, the front drive axle 163 is basically located between the two front wheels 131. The transmission system 16 includes the front drive axle 163 and a drive half shaft 162 located between the front drive axle 163 and the front wheels 131. The drive half shaft 162 is rotatably connected to both the front wheels 131 and the front drive axle 163, transmitting the driving force of the front drive axle 163 to the front wheels 131 to provide driving force for the front wheels 131. The transmission system 16 also includes a drive shaft 164, which is tractively connected to both the transmission assembly 142 and the front drive axle 163, transmitting the driving force generated by the engine 1411 to the front drive axle 163.

[0038] like Figure 4 and Figure 5As shown, in one alternative implementation, the engine 1411, continuously variable transmission (CVT) assembly 1421, and gear transmission assembly 1422 are distributed along the length of the all-terrain vehicle 100. Specifically, the CVT assembly 1421 is at least partially located between the engine 1411 and the gear transmission assembly 1422, with the engine 1411 located in front of the CVT assembly 1421. In this embodiment, the rotation center line of the crankshaft 1411a of the engine 1411 extends substantially along the longitudinal direction of the all-terrain vehicle 100, and the transmission element 1421f of the CVT assembly 1421 extends substantially along the width direction of the all-terrain vehicle 100. As previously mentioned, as one possible approach, the gear transmission assembly 1422 is connected to the rear wheel 132 via a pair of drive shafts 161. Specifically, the gear transmission assembly 1422 includes a first output end 1422a, and the drive shafts 161 are connected to the gear transmission assembly 1422 via the first output end 1422a. Understandably, for the sake of consistent transmission between the drive shaft 161 and the rear wheel 132, the first output end 1422a is located substantially at the center of the all-terrain vehicle 100 along its width direction. Specifically, a longitudinal plane S1 is defined that is perpendicular to the width direction of the all-terrain vehicle 100 and passes through the center of the width of the all-terrain vehicle 100. The drive shaft 161, which is connected to the rear wheel 132, is substantially symmetrical with respect to the longitudinal plane S1. Therefore, the longitudinal plane S1 at least partially passes through the first output end 1422a, and is located substantially at the center of the gear transmission assembly 1422.

[0039] like Figure 5 As shown, a first reference line L1 is defined that is substantially aligned with the extension direction of the rotation center line of the drive wheel 1421b or the driven wheel 1421d. Furthermore, along the width direction of the all-terrain vehicle 100, the distance between the first reference line L1 and the rotation center line of the drive wheel 1421b of the continuously variable transmission assembly 1421 is equal to the distance between the first reference line L1 and the rotation center line of the driven wheel 1421d of the continuously variable transmission assembly 1421.

[0040] Optionally, the engine 1411 is substantially located on one side of the first reference line L1, and the gear transmission assembly 1422 and drive shaft 164 are substantially located on the other side of the first reference line L1. Specifically, the gear transmission assembly 1422 and drive shaft 164 are substantially located on the left side of the first reference line L1, and the engine 1411 is substantially located on the right side of the first reference line L1. The gear transmission assembly 1422 also includes a second output end 1422b facing forward of the all-terrain vehicle 100. The drive shaft 164 is connected to the gear transmission assembly 1422 via the second output end 1422b. Viewed along the height direction of the all-terrain vehicle 100, the drive shaft 164 substantially overlaps with the continuously variable transmission assembly 1421, and the drive shaft 164 does not substantially overlap with the engine 1411. Specifically, the engine 1411 is substantially located on the right side of the drive shaft 164. Figure 6 As shown, the all-terrain vehicle 100 also includes a fuel assembly 17 and an electrical system 15. The fuel assembly 17 includes a fuel tank 171 for storing fuel, and the electrical system 15 includes a battery 181 for providing power to the electronic components of the all-terrain vehicle 100. The fuel tank 171 is located at the front end of the second support bracket 1122, and the fuel tank 171 is at least partially located at the upper end of the drive shaft 164. More specifically, in this embodiment, the fuel tank 171 is substantially located on the left side of the longitudinal plane S1; the battery 181 is also substantially located on the left side of the longitudinal plane S1. It should be explained that in the description of this application, "the fuel tank 171 is located on the left side of the longitudinal plane S1" means that the space of the fuel tank 171 for containing fuel is substantially located on the right side of the longitudinal plane S1. Specifically, the fuel storage space on the left side should be greater than or equal to twice the fuel storage space on the right side, and the same applies to the right side. This arrangement can effectively balance the center of gravity of the all-terrain vehicle 100. When the engine 1411 and the continuously variable transmission (CVT) assembly 1421 are basically located on the right side of the longitudinal plane S1, the weight offset of the CVT assembly 1421 and the engine 1411 may cause the center of gravity of the all-terrain vehicle 100 to shift to the right, which may cause the all-terrain vehicle 100 to lose stability during driving. The corresponding left-hand placement of the fuel tank 171 and the battery 181 can effectively solve the above problem.

[0041] Understandably, in other embodiments, the engine 1411 and the continuously variable transmission assembly 1421 may also be located on the left side of the longitudinal plane S1, and similarly, the fuel tank 171 and the battery 181 are located substantially on the right side of the longitudinal plane S1.

[0042] like Figure 6As shown, as another alternative implementation, the gear transmission assembly 1422 and the engine 1411 can be positioned on the same side of the first reference line L1. Specifically, both the gear transmission assembly 1422 and the engine 1411 are located to the left of the first reference line L1. As previously mentioned, the gear transmission assembly 1422 passes through the longitudinal plane S1 and is substantially bisected by the longitudinal plane S1. Therefore, the engine 1411 and the continuously variable transmission assembly 1421 are substantially located to the right of the longitudinal plane S1. Viewed along the height direction of the all-terrain vehicle 100, the driveshaft 164 at least partially overlaps with the engine 1411. Positioning the engine 1411 and the gear transmission assembly 1422 on the same side of the first reference line L1 effectively reduces the space occupied by the engine 1411 and the transmission assembly 142 in the width direction of the all-terrain vehicle 100. Compared to positioning the engine 1411 and the gear transmission assembly 1422 on opposite sides of the first reference line L1, positioning them on the same side effectively brings the center of gravity of the all-terrain vehicle 100 closer to the longitudinal plane S1. Arranging the gear transmission assembly 1422 behind the engine 1411 and the continuously variable transmission assembly 1421 can reduce the difficulty of the transmission connection between the gear transmission assembly 1422 and the rear wheel 132, and make the connection space between the transmission half shaft 161 and the gear transmission assembly 1422 more sufficient, thus reducing the assembly difficulty.

[0043] like Figure 7 and Figure 8 As shown, in another alternative implementation, the engine 1411, continuously variable transmission (CVT) assembly 1421, and gear transmission assembly 1422 extend substantially along the length of the all-terrain vehicle 100. The CVT assembly 1421 is located between the engine 1411 and the gear transmission assembly 1422, with the engine 1411 located behind the CVT assembly 1421. Understandably, the engine 1411 and gear transmission assembly 1422 can be positioned on opposite sides of the first reference line L1, for example, the engine 1411 on the left side of the first reference line L1 and the gear transmission assembly 1422 on the right side, or the engine 1411 on the right side of the first reference line L1 and the gear transmission assembly 1422 on the left side. Alternatively, the engine 1411 and gear transmission assembly 1422 can be positioned on the same side of the first reference line L1, such as on the left or right side. This configuration allows the powertrain 141 and continuously variable transmission (CVT) 1421 to be moved rearward, providing ample space for the electrical system 15 and other components of the all-terrain vehicle 100. It also makes the engine 1411 and CVT 1421 more accessible, simplifying maintenance and repair. Furthermore, it significantly reduces interference with the driveshaft 164, resulting in a simpler and more efficient transmission arrangement between the driveshaft 164 and the front drive axle 163.

[0044] Arranging the engine 1411, continuously variable transmission (CVT) assembly 1421, and gear transmission assembly 1422 along the length of the all-terrain vehicle 100 effectively reduces the installation space requirements in the width direction for the powertrain 141 and transmission assembly 142. This layout also helps to distribute weight evenly between the front and rear axles, improving the handling and stability of the all-terrain vehicle 100, which is especially important for the all-terrain vehicle 100 used in off-road environments.

[0045] like Figure 9 As shown, in one alternative implementation, the engine 1411 extends substantially along the length of the all-terrain vehicle 100, and the gear transmission assembly 1422 and the engine 1411 are distributed substantially along the width of the all-terrain vehicle 100. The continuously variable transmission (CVT) 1421 is at least partially located behind the gear transmission assembly 1422 and / or the engine 1411. In this arrangement, viewed along the length of the all-terrain vehicle 100, the CVT 1421 at least partially overlaps with the engine 1411 and / or the gear transmission assembly 1422, and the gear transmission assembly 1422 at least partially overlaps with the engine 1411. As previously described, the drive shaft 161 is connected to the gear transmission assembly 1422 via a first output end 1422a. Further, in this embodiment, the first output end 1422a is located at the lowermost end of the transmission assembly 142, and is located below the engine 1411. This configuration effectively avoids interference between the drive shaft 161 and the engine 1411 or the gear transmission assembly 1422, resulting in a highly efficient and simple transmission connection between the drive shaft 161 and the rear wheel 132. Furthermore, since the gear transmission assembly 1422 and the engine 1411 are distributed along the width direction, the drive shaft 164, which is connected to the second output end 1422b of the gear transmission assembly 1422, and the engine 1411 are also distributed along the width direction of the all-terrain vehicle 100. That is, when viewed along the height direction of the all-terrain vehicle 100, the drive shaft 164 and the engine 1411 do not overlap; or rather, the engine 1411 and the drive shaft 164 are distributed essentially along the width direction.

[0046] Understandably, since the continuously variable transmission (CVT) assembly 1421 is at least partially located behind the gear transmission assembly 1422, it is also at least partially located behind the first output terminal 1422a. In this configuration, the transmission assembly 142 and the engine 1411 are positioned relatively rearward. This rear-mid-mounted layout optimizes the performance of the all-terrain vehicle 100 in complex terrains such as steep slopes and mud, enhancing traction and stability.

[0047] like Figure 10As shown, in another alternative implementation, the crankshaft 1411a of the engine 1411 extends substantially along the length of the all-terrain vehicle 100, the gear transmission assembly 1422 and the engine 1411 are distributed substantially along the width of the all-terrain vehicle 100, and the continuously variable transmission (CVT) assembly 1421 is at least partially located in front of the gear transmission assembly 1422 and / or the engine 1411. In this arrangement, viewed along the length of the all-terrain vehicle 100, the CVT assembly 1421 at least partially overlaps with the engine 1411 and / or the gear transmission assembly 1422. Further, viewed along the width of the all-terrain vehicle 100, the gear transmission assembly 1422 and the engine 1411 at least partially overlap. As previously mentioned, the gear transmission assembly 1422 is connected to the rear wheel 132 via a first output end 1422a. In this embodiment, viewed along the width of the all-terrain vehicle 100, the first output end 1422a is substantially located below the engine 1411. This arrangement allows for more sufficient connection space between the gear transmission assembly 1422 and the drive shaft 161, without interference from the engine 1411 and the continuously variable transmission (CVT) assembly 1421. When the CVT assembly 1421 is located in front of the gear transmission assembly 1422, i.e., the first output end 1422a is basically located behind the transmission assembly 142, this arrangement effectively brings the engine 1411 and the CVT assembly 1421 closer to the front of the all-terrain vehicle 100, concentrating the vehicle's center of gravity more in the middle of the all-terrain vehicle 100, thus enhancing the driving stability of the all-terrain vehicle 100. At this time, the second output end 1422b is at least partially located behind the CVT assembly 1421. Therefore, when the CVT assembly 1421 is located in front of the gear transmission assembly 1422, when viewed along the height direction of the all-terrain vehicle 100, the drive shaft 164 and the CVT assembly 1421 at least partially overlap.

[0048] Understandably, the engine 1411 can be positioned on either the left or right side of the gear transmission assembly 1422. Correspondingly, when the engine 1411 is located on the right side of the gear transmission assembly 1422, the fuel tank 171 and / or battery 181 can be arranged substantially on the left side of the driveshaft 164; when the engine 1411 is located on the left side of the gear transmission assembly 1422, the fuel tank 171 and / or battery 181 can be arranged substantially on the right side of the driveshaft 164, in order to facilitate adjustment of the center of gravity distribution of the all-terrain vehicle 100 in the width direction.

[0049] like Figure 9 and Figure 10As shown, the area of ​​the frame 11 between the rear wheels 132 is defined as the setting area S2. The engine 1411, continuously variable transmission (CVT) assembly 1421, and geared transmission assembly 1422 are substantially located within the setting area S2. The engine 1411 and transmission assembly 142 are substantially located within the setting area S2, and when viewed along the width direction of the all-terrain vehicle 100, the rear wheels 132 (or the setting area S2) at least partially overlap with the engine 1411 and transmission assembly 142. When viewed along the width direction of the all-terrain vehicle 100, the length occupied by the overlapping area of ​​the engine 1411 and transmission assembly 142 with the setting area S2 along the length direction of the all-terrain vehicle 100 is defined as the first length H1, and the length occupied by the engine 1411 and transmission assembly 142 along the length direction is defined as the second length H2. Specifically, when the gear transmission assembly 1422 and the engine 1411 are distributed along the width direction, and the continuously variable transmission assembly 1421 is located in front of the gear transmission assembly 1422 and / or the engine 1411, the ratio of the first length H1 to the second length H2 ranges from 0.28 to 0.8.

[0050] Furthermore, when the gear transmission assembly 1422 and the engine 1411 are distributed along the width direction, and the continuously variable transmission assembly 1421 is located behind the gear transmission assembly 1422 and / or the engine 1411, the ratio of the first length H1 to the second length H2 ranges from 0.4 to 1.

[0051] Understandably, the larger the ratio of the first length H1 to the second length H2, the more effectively the front and rear space of the all-terrain vehicle 100 can be freed up, making the spatial arrangement of the all-terrain vehicle 100 more optimized. Arranging the gear transmission assembly 1422 and the engine 1411 along the width direction of the all-terrain vehicle 100 can effectively shorten the longitudinal space occupied by the all-terrain vehicle 100, while also allowing the powertrain 141 and the transmission assembly 142 to be located within the arrangement area as much as possible, improving the vehicle's layout.

[0052] Compared to arranging the engine 1411, continuously variable transmission (CVT) assembly 1421, and gear transmission assembly 1422 along the length of the all-terrain vehicle 100, arranging the engine 1411 and gear transmission assembly 1422 along the width of the all-terrain vehicle 100 effectively reduces the space occupied by the powertrain 141 and transmission assembly 142 in the overall vehicle length. For an all-terrain vehicle 100 with loading capabilities, this frees up more space for the cab or cargo compartment, improving comfort and practicality.

[0053] When the engine 1411 is longitudinally mounted, the output direction of the driving force of the crankshaft 1411a of the engine 1411 is basically consistent with the output direction of the transmission shaft 164. This helps to reduce the power transmission components that need to be set up to change the transmission direction of the driving force, effectively reducing energy loss, improving transmission efficiency, and enhancing the power output of the all-terrain vehicle 100.

[0054] like Figure 11As shown, engine 1411 includes a cylinder head 1411b and a cylinder block 1411c, with cylinder head 1411b located above cylinder block 1411c. Engine 1411 also includes a cylinder (not shown), a cylinder head (not shown), and a piston (not shown) located in the cylinder block. The piston is at least partially located within the cylinder and reciprocates within it. The cylinder head is located at the upper end of the cylinder and covers it. The space between the cylinder, the upper part of the piston, and the lower part of the cylinder head together constitutes a combustion chamber. As an optional implementation, when viewed along the height direction of the all-terrain vehicle 100, cylinder head 1411b is at least partially located on the side of cylinder block 1411c facing or away from the longitudinal plane S1. When viewed along the length direction of the all-terrain vehicle 100, the cylinder axis L2 forms an acute angle β with the longitudinal plane S1, meaning the cylinder axis L2 is inclined relative to the longitudinal plane S1. Understandably, the larger the angle β between the cylinder axis L2 and the longitudinal plane S1, the larger the angle at which the engine 1411 rotates around the crankshaft 1411a, meaning the engine 1411 is tilted on the frame 11. Optionally, the angle β can be set in the range of 10° to 55°. The tilt direction of the engine 1411 can be towards one side of the longitudinal plane S1, or it can be arranged to be tilted away from the longitudinal plane S1. That is, the cylinder head 1411b can be arranged towards the longitudinal plane S1, or it can be arranged to be tilted away from the longitudinal plane S1. Specifically, when the engine 1411, the continuously variable transmission (CVT) assembly 1421, and the gear transmission assembly 1422 are distributed substantially along the length of the all-terrain vehicle 100, and the engine 1411 is located in front of the CVT assembly 1421, in some embodiments, the engine 1411 is at least partially located above the drive shaft 164. In this arrangement, the engine 1411 is positioned upwards on the all-terrain vehicle 100 due to the arrangement of the drive shaft 164. When the crankshaft 1411a is arranged along the length of the all-terrain vehicle 100, the cylinder head 1411b is tilted to the left or right side of the all-terrain vehicle 100, which can effectively compress the space for the engine 1411 in the height direction of the all-terrain vehicle 100. Furthermore, a accommodating space S3 is formed between the tilted engine 1411 and the chassis 113. This accommodating space S3 can be used to accommodate at least part of the electrical system 15 or other components of the all-terrain vehicle 100, thereby improving the space adaptability of the engine 1411 within the compact frame of the all-terrain vehicle 100.

[0055] As previously described, the gear transmission assembly 1422 includes a second output end 1422b that is driveably connected to the drive shaft 164 and a first output end 1422a that is driveably connected to the drive half shaft 161. It can be understood that, as Figure 5 and Figure 6As shown, in some embodiments, due to limited space, the second output terminal 1422b and the first output terminal 1422a are basically distributed left and right on the all-terrain vehicle 100. Furthermore, to improve the drive transmission performance between the drive half-shaft 161 and the gear transmission assembly 1422, the second output terminal 1422b is basically located on the longitudinal plane S1. Under this premise, a certain distance is formed between the first output terminal 1422a and the longitudinal plane S1. Figure 10 As shown, to maintain good transmission performance between the front drive axle 163 and the front wheels 131, the front drive axle 163 is located at the front of the frame 11, and is substantially located in the middle of the two front wheels 131, with the longitudinal plane S1 at least partially passing through the front drive axle 163. Viewed along the height direction of the all-terrain vehicle 100, the axis of rotation of the drive shaft 164 is defined as the second reference line L3, and an angle α is formed between the second reference line L3 and the longitudinal plane S1, ranging from 0° to 15°. Alternatively, the angle α between the second reference line L3 and the longitudinal plane S1 can range from 2° to 10°. Understandably, since the front drive axle 163, connected to the front end of the drive shaft 164, is substantially located in the middle of the frame 11 along its left-right direction, the size of the angle α actually depends on the position of the second output end 1422b on the frame 11 along the left-right direction. When the included angle α is too large, the second output end 1422b deviates too far from the longitudinal plane S1 along the width direction of the all-terrain vehicle 100, resulting in the drive shaft 164 occupying too much space in the width direction of the all-terrain vehicle 100, which increases the difficulty of transmission layout. This setting method, which forms a certain angle between the drive shaft 164 and the longitudinal plane S1, can effectively arrange the position of the gear transmission assembly 1422 to the left or right according to the layout requirements of the vehicle's center of gravity, effectively balancing the center of gravity position of the all-terrain vehicle 100 and improving the operational stability of the all-terrain vehicle 100.

[0056] like Figure 12As shown, as an alternative implementation, the engine 141, gear transmission assembly 1422, and continuously variable transmission (CVT) assembly 1421 can be distributed along the length of the all-terrain vehicle 100, with the engine 1411 positioned between the CVT assembly 1421 and the gear transmission assembly 1422, and the gear transmission assembly 1422 located behind the engine 1411. In this embodiment, the CVT assembly 1421 and the gear transmission assembly 1422 are not housed in the same housing 143, but are housed in separate housings 143. Furthermore, the gear transmission assembly 1422 is at least partially located within the mounting area S2, while the engine 1411 and the CVT assembly 1421 are located in front of the mounting area S2, that is, at least partially located in front of the rear wheel 132. The transmission system 16 includes a rear driveshaft 165, which is located between and driven by the gear transmission assembly 1422 and the continuously variable transmission (CVT) assembly 1421. The engine 1411 is at least partially located above the rear driveshaft 165. In this embodiment, a driveshaft 164 passes through and is driven by the CVT assembly 1421. Furthermore, one end of the driveshaft 164 is driven by the gear transmission assembly 1422, and the other end is driven by the front drive shaft. That is, the CVT assembly 1421 synchronously transmits driving force to the gear transmission assembly 1422 and the front drive axle 163 through the driveshaft 164.

[0057] like Figure 13 As shown, as another alternative implementation, the transmission system 16 further includes a rear drive axle 166. In this embodiment, the differential D1 is located within the rear drive axle 166, and the differential D1 is no longer located within the gear transmission assembly 1422. Furthermore, the reduction gear within the gear transmission assembly 1422 can be partially simplified or removed, with both the reduction gear and the differential D1 located within the rear drive axle 166. Specifically, as... Figure 6 As shown, the gear transmission assembly 1422 includes a first reduction unit 1422c and a second reduction unit 1422d. Both the first reduction unit 1422c and the second reduction unit 1422d are used to adjust the output speed and torque of the vehicle. In this embodiment, the first reduction unit 1422c is located within the housing 143 of the gear transmission assembly 1422, and the second reduction unit 1422d is located within the rear drive axle 166. In this embodiment, one end of the rear drive shaft 165 is connected to the first output end 1422a, and the other end of the rear drive shaft 165 is connected to the rear drive axle 166. The rear drive axle 166 is basically located in the setting area S2 (see...). Figure 10In this embodiment, the rear drive axle 166 is located between the rear wheels 132. The engine 1411 is at least partially located above the rear drive shaft 165, and when viewed along the height direction of the all-terrain vehicle 100, the drive shaft 164 at least partially overlaps with the engine 1411. Understandably, since the gear transmission assembly 1422 is connected to the rear drive axle 166 via the drive shaft 164, the engine 1411 and the continuously variable transmission (CVT) assembly 1421 can be positioned relatively forward. That is, this arrangement allows for relatively flexible placement of the engine 1411, CVT assembly 1421, and gear transmission assembly 1422, which is beneficial for the all-terrain vehicle 100 to better balance the overall weight distribution and improve acceleration performance and braking stability.

[0058] In this application, the descriptions "the engine is placed along the length of the all-terrain vehicle" and "the engine is longitudinally mounted" both refer to the fact that the crankshaft of the engine extends in a direction substantially consistent with the length of the all-terrain vehicle. Furthermore, this means that the two components, which are fixedly connected, cannot undergo relative displacement or rotation in the connected state.

[0059] It should be noted that the descriptions such as "basically horizontal" and "basically vertical" in this embodiment are not strictly "horizontal" or "vertical" in a mathematical sense. They may have a certain angular error, for example, 5° to 10°. "Basically located on one side of the first reference line" means that at least 60% of the component is located on one side of the first reference line.

[0060] When the body panels of an all-terrain vehicle are not aligned left and right, making it difficult to determine the width center, in the description of this application, the "width center of the all-terrain vehicle" refers to the width center relative to the vehicle frame.

[0061] It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. All other embodiments derived by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0062] Obviously, the accompanying drawings are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar situations based on these drawings without any creative effort. Furthermore, it is understood that although the work done in this development process may be complex and lengthy, for those skilled in the art, certain design, manufacturing, or production modifications made based on the technical content disclosed in this application are merely conventional technical means and should not be considered as insufficient disclosure of this application.

[0063] 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: a frame; a body cover at least partially connected to the frame; a walking system, the walking system comprising a pair of front wheels distributed along a width direction of the all-terrain vehicle; a drive system, the drive system comprising a front drive axle located between and in driving connection with the pair of front wheels; a power device, the power device comprising a transmission assembly and a power assembly, the transmission assembly comprising a gear transmission assembly and a continuously variable transmission assembly, the gear transmission assembly being in driving connection with the continuously variable transmission assembly, the power assembly comprising an engine, the engine comprising a piston, a crankshaft and a cylinder for accommodating the piston, the piston being in driving connection with the crankshaft for driving the crankshaft, the crankshaft being further in driving connection with the continuously variable transmission assembly; characterized in that a center line of rotation of the crankshaft extends along a length direction of the frame; a longitudinal plane perpendicular to the width direction of the all-terrain vehicle and passing through a width center of the all-terrain vehicle is defined, and as viewed along the length direction of the all-terrain vehicle, an axis of the cylinder is arranged obliquely relative to the longitudinal plane; the gear transmission assembly is located at a rear portion of the frame, the drive system further comprises a transmission shaft, one end of the transmission shaft being in driving connection with the gear transmission assembly, the other end of the transmission shaft being in driving connection with the front drive axle, and an included angle between a center line of rotation of the transmission shaft and the longitudinal plane ranges from 2° to 10°.

2. The all-terrain vehicle of claim 1, wherein, As viewed along the length direction of the all-terrain vehicle, an angle between the axis of the cylinder and the longitudinal plane ranges from 10° to 55°.

3. The ATV of claim 2, wherein, The engine, the continuously variable transmission assembly and the gear transmission assembly are distributed along the length direction of the all-terrain vehicle.

4. The ATV of claim 3, wherein, The continuously variable transmission assembly comprises a driving pulley and a driven pulley, a reference line being defined in line with an extension direction of a center line of rotation of the driving pulley, the reference line being in line with the center line of rotation of the driving pulley and with a center line of rotation of the driven pulley respectively; the gear transmission assembly and the engine are located on a same side of the reference line, and as viewed along a height direction of the all-terrain vehicle, the transmission shaft at least partially overlaps the engine.

5. The ATV of claim 3, wherein, The continuously variable transmission assembly comprises a driving pulley and a driven pulley, a reference line being defined in line with an extension direction of a center line of rotation of the driving pulley, the reference line being in line with the center line of rotation of the driving pulley and with a center line of rotation of the driven pulley respectively; the gear transmission assembly is located on one side of the reference line, and the engine is located on the other side of the reference line.

6. An all-terrain vehicle as claimed in claim 4 or 5, characterised in that, The all-terrain vehicle further comprises a fuel tank for storing fuel and a storage battery for storing power, the fuel tank and the storage battery being located on a side of the longitudinal plane away from the engine.

7. The all-terrain vehicle of claim 2, characterized in that, The gear transmission assembly and the engine are distributed along the width direction of the all-terrain vehicle, and the engine is at least partially located in front of the continuously variable transmission assembly and / or the gear transmission assembly; As viewed along the length direction of the all-terrain vehicle, the gear transmission assembly at least partially overlaps the engine.

8. The all-terrain vehicle of claim 2, wherein, The gear shifting assembly and the engine are distributed along the width direction of the all-terrain vehicle, and the engine is at least partially located behind the continuously variable transmission assembly and / or the gear shifting assembly; and the gear shifting assembly and the engine at least partially overlap along the length direction of the all-terrain vehicle.

9. The ATV of claim 8, wherein, The continuously variable transmission assembly comprises a driving wheel and a driven wheel, the driving wheel is in driving connection with the engine, and the driven wheel is in driving connection with the gear shifting assembly; a transmission member is sleeved between the driving wheel and the driven wheel, the driving wheel and the driven wheel are in driving connection through the transmission member, and the transmission member is a steel belt or a steel chain.

10. The all-terrain vehicle of claim 3, wherein, The transmission system further comprises a rear drive axle and a rear transmission shaft, the rear transmission shaft is located between the gear shifting assembly and the rear drive axle and is in driving connection with the gear shifting assembly and the rear drive axle respectively, and the engine is at least partially located above the rear transmission shaft.

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