All-terrain vehicle

Abstract

The utility model discloses an all-terrain vehicle. The all-terrain vehicle comprises a vehicle frame, a vehicle body covering part, a walking system, a suspension system and a power assembly. 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 comprises a torsion bar and a rear rocker arm, the torsion bar is connected with the frame and the rear rocker arm, at least part of the walking system is connected to the frame through the rear rocker arm, and the rear rocker arm comprises a first upper rocker arm, a second upper rocker arm located behind the first upper rocker arm, a first lower rocker arm located below the first upper rocker arm and a second lower rocker arm located behind the first lower rocker arm; the power assembly is supported by the frame and is in transmission connection with the walking system; the suspension system further comprises a ball pin piece, one end of the ball pin piece is movably connected with the torsion bar, the other end of the ball pin piece is movably connected with the first lower rocker arm, and at least part of the ball pin piece is arranged between the first upper rocker arm and the second upper rocker arm in a penetrating mode. Through the arrangement, the service life of the ball pin piece can be prolonged.

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 can travel freely on terrains that are difficult for ordinary vehicles to traverse, such as beaches, riverbeds, forest roads, streams, and deserts.

[0003] All-terrain vehicles (ATVs) typically include a frame, running gear, suspension system, powertrain, and drivetrain components. The suspension system absorbs and mitigates shocks and vibrations from the ground to improve ride comfort. It generally consists of rocker arms, torsion bars, and ball joints. The rocker arms connect parts of the running gear to the frame. The torsion bars prevent body roll during cornering. The ball joints connect the torsion bars and the rocker arms. In existing technology, the placement of the ball joints avoids space occupied by the rocker arms, thus reducing the available space for the ball joints and limiting the installation of shorter, smaller ball joints within that limited space. However, for the same stroke, smaller ball joints exhibit greater oscillation amplitude, leading to greater wear and tear and consequently reducing their lifespan. 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 longer service life of its ball joint components.

[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, and a powertrain. The body panels are supported by the frame. The running gear is at least partially located below the frame. The suspension system includes a torsion bar and a rear swingarm. The torsion bar connects the frame and the rear swingarm, and the rear swingarm connects at least a portion of the running gear to the frame. The rear swingarm includes a first upper swingarm, a second upper swingarm located behind the first upper swingarm, a first lower swingarm located below the first upper swingarm, and a second lower swingarm located behind the first lower swingarm. The powertrain is supported by the frame and is drive-connected to the running gear. The suspension system also includes a ball joint, one end of which is movably connected to the torsion bar, and the other end of which is movably connected to the first lower swingarm. The ball joint is at least partially inserted between the first and second upper swingarms.

[0007] Furthermore, the lowest end of the torsion bar is higher than the highest end of the first upper rocker arm, and the lowest end of the torsion bar is higher than the highest end of the second upper rocker arm.

[0008] Furthermore, the rotation axes of the first upper rocker arm and the frame, the second upper rocker arm and the frame, the first lower rocker arm and the frame, and the second lower rocker arm and the frame are basically parallel. A reference plane perpendicular to the height direction of the frame and a longitudinal plane perpendicular to the width direction of the frame are defined. The orthographic projection of the reference plane onto the longitudinal plane is the first projection line, and the orthographic projection of the rotation axis of the first upper rocker arm and the frame onto the longitudinal plane is the second projection line. The acute angle formed by the first projection line and the second projection line is in the range of 5° to 10°, and the opening of the acute angle is set facing forward.

[0009] Furthermore, the all-terrain vehicle also includes a rear axle mechanism located behind the powertrain, which drives the powertrain and the running gear, with a torsion bar located at least partially between the powertrain and the rear axle mechanism.

[0010] Furthermore, the frame includes a longitudinal beam located between the powertrain and the rear axle mechanism, with a torsion bar fixed to the longitudinal beam and at least partially surrounding it.

[0011] Furthermore, the frame includes a main frame that extends substantially along the length of the frame, and the minimum distance between the first lower rocker arm and the axis of rotation of the frame and the main frame along the width of the frame ranges from 85 mm to 130 mm.

[0012] Furthermore, the first lower rocker arm is at least partially arched upward to form a bend, the bend being at least partially located above the main frame, and the bend being configured to avoid the main frame during the movement of the all-terrain vehicle.

[0013] Furthermore, the suspension system also includes a shock absorber, the upper end of which is rotatably connected to the frame, and the lower end of which is rotatably connected to the second upper rocker arm. The shock absorber is located behind the torsion bar and also behind the ball joint.

[0014] Furthermore, the all-terrain vehicle also includes a rear axle mechanism, which drivesly connects the powertrain and the running gear. The frame includes a rear mounting component located above and fixedly connected to the rear axle mechanism. The rear mounting component has a first mounting point and a second mounting point. The first mounting point is located in front of the second mounting point. The first mounting point and the frame form a first rotating part. A first upper rocker arm is rotatably connected to the first rotating part. The second mounting point and the frame form a second rotating part. A second upper rocker arm is rotatably connected to the second rotating part.

[0015] Furthermore, the all-terrain vehicle also includes a front axle mechanism that is connected to the powertrain; the frame includes a front mounting component located above and fixedly connected to the front axle mechanism; the suspension system also includes a front rocker arm that connects the running system and the frame, the front rocker arm including a third upper rocker arm and a fourth upper rocker arm, the third upper rocker arm being located in front of the fourth upper rocker arm; the front mounting component is provided with a front mounting point, the front mounting point and the frame forming a third rotating part, the third upper rocker arm being rotatably connected to the third rotating part.

[0016] The aforementioned all-terrain vehicle allows the ball joint to utilize the space between the first and second upper rocker arms, which facilitates the assembly of longer ball joints. Consequently, while maintaining the same stroke, the swing amplitude of the ball joint can be reduced, thus improving its service life. 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 This is a structural diagram of the frame, suspension system, powertrain, and rear axle mechanism of an all-terrain vehicle provided in an embodiment of this application.

[0020] Figure 4 Right view of a portion of the rear structure of an all-terrain vehicle provided in an embodiment of this application.

[0021] Figure 5 This is an exploded view of the frame, suspension system, and rear axle mechanism of the all-terrain vehicle provided in the embodiments of this application. Detailed Implementation

[0022] 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.

[0023] like Figure 1 and Figure 2 As 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.

[0024] 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 1In 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.

[0025] 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.

[0026] like Figure 3 and Figure 4 As shown, in one embodiment, the suspension system 14 includes a torsion bar 144 and a rear swing arm 145. The rear swing arm 145 connects at least a portion of the running gear 13 to the frame 11, and the torsion bar 144 connects the frame 11 and the rear swing arm 145. The torsion bar 144 is used to prevent body roll of the all-terrain vehicle 100 during cornering. Specifically, the rear swing arm 145 includes a first upper swing arm 1451, a second upper swing arm 1452, a first lower swing arm 1453, and a second lower swing arm 1454. The second upper swing arm 1452 is located behind the first upper swing arm 1451, the first lower swing arm 1453 is located below the first upper swing arm 1451, and the second lower swing arm 1454 is located behind the first lower swing arm 1453. The first upper swing arm 1451, the second upper swing arm 1452, the first lower swing arm 1453, and the second lower swing arm 1454 are all rotatably connected to the frame 11 and at least a portion of the running gear 13.

[0027] More specifically, the suspension system 14 also includes a ball joint 146 for connecting the rear rocker arm 145 and the torsion bar 144. One end of the ball joint 146 is movably connected to the torsion bar 144, and the other end is movably connected to the first lower rocker arm 1453. The ball joint 146 at least partially passes between the first upper rocker arm 1451 and the second upper rocker arm 1452. This arrangement allows the ball joint 146 to utilize the space between the first and second upper rocker arms 1451 and 1452, facilitating the installation of a longer ball joint 146. Therefore, with the same amount of travel, a longer ball joint 146 reduces the swing amplitude of the ball joint 146, thus improving its service life and consequently extending the service life of the suspension system 14.

[0028] In one implementation, the lowest point of the torsion bar 144 is higher than the highest point of the first upper rocker arm 1451, and the lowest point of the torsion bar 144 is higher than the highest point of the second upper rocker arm 1452. This arrangement can further increase the length of the ball pin 146, thereby further reducing the swing amplitude of the ball pin 146.

[0029] In one implementation, the first upper rocker arm 1451 is substantially parallel to the rotation axis 1455 of the frame 11, the second upper rocker arm 1452 is substantially parallel to the rotation axis 1456 of the frame 11, the first lower rocker arm 1453 is substantially parallel to the rotation axis 1457 of the frame 11, and the second lower rocker arm 1454 is substantially parallel to the rotation axis 1458 of the frame 11. A reference plane 10p perpendicular to the height direction of the frame 11 and a longitudinal plane 10q perpendicular to the width direction of the frame 11 are defined. The orthographic projection of the reference plane 10p onto the longitudinal plane 10q is the first projection line, and the orthographic projection of the first upper rocker arm 1451 and the rotation axis 1455 of the frame 11 onto the longitudinal plane 10q is the second projection line. The acute angle λ formed by the first projection line and the second projection line is in the range of 5° to 10°, and the opening of the acute angle is forward-facing. Specifically, the acute angle λ formed by the first projection line and the second projection line is in the range of 6° to 9°. More specifically, the acute angle λ between the first projection line and the second projection line is 7°. This configuration allows the rear swing arm 145 to provide support for the walking system 13 (see reference) when the all-terrain vehicle 100 traverses rough terrain and the ground impacts the walking system 13 backward. Figure 1 It provides a rearward travel, thereby preventing the rear swing arm 145 from rigidly torturing with the frame 11 when subjected to rearward impact force, which helps to reduce the impact of rough terrain on the all-terrain vehicle 100, thus improving the driving comfort of the all-terrain vehicle 100.

[0030] Secondly, the above-mentioned configuration avoids an excessively large acute angle λ between the first and second projection lines, which could lead to excessive tilting of the rear rocker arm 145. This prevents an excessively tilted rear rocker arm 145 from reducing its travel distance, thereby increasing the travel distance of the running gear 13 and improving the passability of the all-terrain vehicle 100. Furthermore, it also avoids an excessively small acute angle λ between the first and second projection lines, which could prevent insufficient rearward travel for the running gear 13, thus improving the driving comfort of the all-terrain vehicle 100.

[0031] In one implementation, the all-terrain vehicle 100 also includes a rear axle mechanism 30 for transmitting power from the powertrain 15 to the running gear 13. Specifically, the rear axle mechanism 30 is located behind the powertrain 15 and drivesly connects the powertrain 15 and the running gear 13. A torsion bar 144 is at least partially located between the powertrain 15 and the rear axle mechanism 30. This arrangement allows the torsion bar 144 to utilize the space between the powertrain 15 and the rear axle mechanism 30, thereby improving structural compactness.

[0032] As an optional implementation, the frame 11 includes a longitudinal beam 11g located between the powertrain 15 and the rear axle mechanism 30. A torsion bar 144 is fixed to the longitudinal beam 11g and at least partially surrounds it. This configuration ensures the torsion bar 144 is fixed while preventing interference between it and the longitudinal beam 11g during operation, thereby improving the operational stability of the torsion bar 144.

[0033] In one embodiment, the frame 11 includes a main frame 11h extending substantially along the length of the frame 11. The minimum distance D13 between the first lower rocker arm 1453 and the axis of rotation of the frame 11 along the width direction of the frame 11 and the main frame 11h ranges from 85 mm to 130 mm. Specifically, the minimum distance D13 between the first lower rocker arm 1453 and the axis of rotation of the frame 11 along the width direction of the frame 11 and the main frame 11h ranges from 96 mm to 118 mm. More specifically, the minimum distance D13 between the first lower rocker arm 1453 and the axis of rotation of the frame 11 along the width direction of the frame 11 and the main frame 11h is 107 mm. With this configuration, under the premise of the same size first lower rocker arm 1453, the minimum distance D13 between the first lower rocker arm 1453 and the rotation axis of the frame 11 and the main frame 11h can be avoided from being too large, which would result in the first lower rocker arm 1453 extending too far from the frame 11 in the width direction. Thus, while meeting the travel stroke of the walking system 13, the distance of the first lower rocker arm 1453 extending too far from the frame 11 in the width direction can be avoided from being too small, which would result in the first lower rocker arm 1453 moving too much in the height direction of the frame 11. This helps to reduce the movement amplitude of the first lower rocker arm 1453 in the height direction of the frame 11, thereby improving the driving comfort of the all-terrain vehicle 100. In addition, it can also prevent the minimum distance D13 between the first lower rocker arm 1453 and the rotation axis of the frame 11 and the main frame 11h from being too small, which would result in the first lower rocker arm 1453 extending too far out of the frame 11 along the width direction of the frame 11. This avoids the first lower rocker arm 1453 interfering with the installation of other components and helps to improve the structural compactness of the first lower rocker arm 1453.

[0034] In one implementation, the first lower rocker arm 1453 is at least partially arched upward to form a bend 1459, which is at least partially located above the main frame 11h. The bend 1459 is configured to avoid the main frame 11h during the movement of the all-terrain vehicle 100. With this configuration, when the first lower rocker arm 1453 swings, the bend 1459 prevents the main frame 11h from interfering with the travel of the first lower rocker arm 1453, thereby increasing the travel of the first lower rocker arm 1453 and, consequently, increasing the travel of the running system 13 connected to the first lower rocker arm 1453, thus improving the passability of the all-terrain vehicle 100.

[0035] In one implementation, the suspension system 14 also includes a shock absorber 147, which reduces vehicle body vibration to improve the comfort of the all-terrain vehicle 100. Specifically, the upper end of the shock absorber 147 is rotatably connected to the frame 11, and the lower end of the shock absorber 147 is rotatably connected to the second upper rocker arm 1452. The shock absorber 147 is located behind the torsion bar 144 and also behind the ball joint 146. This arrangement allows the shock absorber 147 to avoid the ball joint 146 located between the first upper rocker arm 1451 and the second upper rocker arm 1452, thereby facilitating the installation of the ball joint 146 and the shock absorber 147 at the rear rocker arm 145 and improving the space utilization at the rear rocker arm 145.

[0036] like Figure 5 As shown, in one embodiment, the frame 11 includes a rear mount 11i, which is located above and fixedly connected to the rear axle mechanism 30. This arrangement allows the rear mount 11i to be indirectly connected to the frame 11 via the rear axle mechanism 30, thereby improving the stability of the rear mount 11i.

[0037] Specifically, the rear mounting component 11i is provided with a first mounting point 11ia and a second mounting point 11ib. The first mounting point 11ia is located in front of the second mounting point 11ib. The first mounting point 11ia and the frame 11 form a first rotating part. The first upper rocker arm 1451 is rotatably connected to the first rotating part. The second mounting point 11ib and the frame 11 form a second rotating part. The second upper rocker arm 1452 is rotatably connected to the second rotating part. This arrangement allows the first upper rocker arm 1451 and the second upper rocker arm 1452 to be indirectly connected to the frame 11 through the rear mounting component 11i, thereby simplifying the connection structure between the first upper rocker arm 1451 and the frame 11, and simplifying the connection structure between the second upper rocker arm 1452 and the frame 11, thus improving the assembly efficiency of the first upper rocker arm 1451 and the second upper rocker arm 1452.

[0038] In some embodiments, since the rear rocker arm 145 includes two rocker arms distributed along the width direction of the frame 11, there are two first mounting points 11ia and two mounting points 11ib on the rear mount 11i, and the first mounting points 11ia and the second mount are both distributed along the width direction of the frame 11, which facilitates the connection between the rear mount 11i and the rear rocker arms 145 on both sides.

[0039] In one implementation, the all-terrain vehicle 100 also includes a front axle mechanism 31, which transmits power from the powertrain 15 to the running gear 13. Specifically, the front axle mechanism 31 is drive-connected to the powertrain 15 so that it can transmit power from the powertrain 15. More specifically, the frame 11 includes a front mounting member 11j, which is located above and fixedly connected to the front axle mechanism 31. This arrangement allows the front mounting member 11j to be indirectly connected to the frame 11 via the front axle mechanism 31, thereby improving the stability of the front mounting member 11j.

[0040] In this embodiment, the suspension system 14 further includes a front rocker arm 143, which connects the running system 13 and the frame 11. The front rocker arm 143 includes a third upper rocker arm 1431 and a fourth upper rocker arm 1432, with the third upper rocker arm 1431 located in front of the fourth upper rocker arm 1432. More specifically, the front mounting member 11j is provided with a front mounting point 11ja, and the front mounting point 11ja and the frame 11 form a third rotating part, with the third upper rocker arm 1431 rotatably connected to the third rotating part. This arrangement allows the third upper rocker arm 1431 to be indirectly connected to the frame 11 via the front mounting member 11j, thereby simplifying the connection structure between the third upper rocker arm 1431 and the frame 11 and improving the assembly efficiency of the third upper rocker arm 1431. In some embodiments, the fourth upper rocker arm 1432 is rotatably connected to the frame 11.

[0041] In some embodiments, since the front rocker arm 143 includes two rocker arms distributed along the width direction of the frame 11, there are two front mounting points 11ja on the front mounting member 11j, and the front mounting points 11ja are distributed along the width direction of the frame 11, which facilitates the connection between the front mounting member 11j and the running systems 13 on both sides.

[0042] 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, the suspension system including a torsion bar and a rear swing arm, the torsion bar connecting the frame and the rear swing arm, the rear swing arm connecting at least a portion of the running system to the frame, the rear swing arm including a first upper swing arm, a second upper swing arm located behind the first upper swing arm, a first lower swing arm located below the first upper swing arm, and a second lower swing arm located behind the first lower swing arm; A powertrain, which is supported by the vehicle frame and is connected in transmission to the running gear; Its features are, The suspension system also includes a ball joint, one end of which is movably connected to the torsion bar, and the other end of which is movably connected to the first lower rocker arm. The ball joint is at least partially inserted between the first upper rocker arm and the second upper rocker arm.

2. The all-terrain vehicle according to claim 1, characterized in that, The lowest end of the torsion bar is higher than the highest end of the first upper rocker arm, and the lowest end of the torsion bar is higher than the highest end of the second upper rocker arm.

3. The all-terrain vehicle according to claim 1, characterized in that, The first upper rocker arm is substantially parallel to the rotation axis of the frame, the second upper rocker arm is substantially parallel to the rotation axis of the frame, the first lower rocker arm is substantially parallel to the rotation axis of the frame, and the second lower rocker arm is substantially parallel to the rotation axis of the frame. A reference plane perpendicular to the height direction of the frame and a longitudinal plane perpendicular to the width direction of the frame are defined. The orthographic projection of the reference plane onto the longitudinal plane is a first projection line, and the orthographic projection of the rotation axis of the first upper rocker arm and the frame onto the longitudinal plane is a second projection line. The acute angle formed by the first projection line and the second projection line is in the range of 5° to 10°, and the opening of the acute angle is set facing forward.

4. The all-terrain vehicle according to claim 1, characterized in that, The all-terrain vehicle also includes a rear axle mechanism located behind the powertrain, which drivesly connects the powertrain and the running gear, and the torsion bar is at least partially located between the powertrain and the rear axle mechanism.

5. The all-terrain vehicle according to claim 4, characterized in that, The frame includes a longitudinal beam located between the powertrain and the rear axle mechanism, and the torsion bar is fixed to the longitudinal beam and at least partially arranged around the longitudinal beam.

6. The all-terrain vehicle according to claim 1, characterized in that, The frame includes a main frame that extends substantially along the length of the frame, and the minimum distance between the first lower rocker arm and the axis of rotation of the frame and the main frame along the width of the frame ranges from 85 mm to 130 mm.

7. The all-terrain vehicle according to claim 6, characterized in that, The first lower rocker arm is at least partially arched upward to form a bend, the bend being at least partially located above the main frame, and the bend being configured to avoid the main frame during the movement of the all-terrain vehicle.

8. The all-terrain vehicle according to claim 1, characterized in that, The suspension system also includes a shock absorber, the upper end of which is rotatably connected to the vehicle frame, and the lower end of which is rotatably connected to the second upper rocker arm. The shock absorber is located behind the torsion bar and also behind the ball joint.

9. The all-terrain vehicle according to claim 1, characterized in that, The all-terrain vehicle also includes a rear axle mechanism, which drivesly connects the powertrain and the travel system. The frame includes a rear mounting component located above and fixedly connected to the rear axle mechanism. The rear mounting component has a first mounting point and a second mounting point. The first mounting point is located in front of the second mounting point. The first mounting point and the frame form a first rotating part. A first upper rocker arm is rotatably connected to the first rotating part. The second mounting point and the frame form a second rotating part. The second upper rocker arm is rotatably connected to the second rotating part.

10. The all-terrain vehicle according to claim 1, characterized in that, The all-terrain vehicle also includes a front axle mechanism that is connected to the powertrain. The frame includes a front mounting component located above and fixedly connected to the front axle assembly; The suspension system also includes a front rocker arm connecting the running system and the frame, the front rocker arm including a third upper rocker arm and a fourth upper rocker arm, the third upper rocker arm being located in front of the fourth upper rocker arm; The front mounting component is provided with a front mounting point, and the front mounting point and the frame form a third rotating part, and the third upper rocker arm is rotatably connected to the third rotating part.

Images