Rear axle assembly and all-terrain vehicle

Abstract

The application provides a rear axle assembly and an all-terrain vehicle, and relates to the technical field of vehicles, and aims to solve the technical problem of instability of an all-terrain vehicle of related technology when driving on complex road surfaces. The rear axle assembly comprises a differential, a left suspension and a right suspension. The left suspension has opposite first and second ends in a first horizontal direction. The first end is rotationally connected with a left wheel, and the second end is rotationally connected with a left end of a vehicle frame. The right suspension has opposite third and fourth ends in the first horizontal direction. The third end is rotationally connected with a right wheel, and the fourth end is rotationally connected with a right end of the vehicle frame. A first output end of the differential is connected with the left wheel, and a second output end of the differential is connected with the right wheel. In the first horizontal direction, the first output end is spaced apart from the second end of the left suspension by a first preset distance, and the second output end is spaced apart from the fourth end of the right suspension by a second preset distance. The first output end and the second output end of the differential are both located outside the left suspension and the right suspension.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a rear axle assembly and an all-terrain vehicle. Background Technology

[0002] All-terrain vehicles, commonly known as "beach buggies" or "all-terrain four-wheel off-road vehicles," are simple and practical, unrestricted by road conditions, and possess excellent off-road performance. In related technologies, the rear suspension of an all-terrain vehicle connects the frame to the rear wheels. When the all-terrain vehicle moves up and down, the connection between the rear suspension and the frame can rotate vertically, mitigating the impact transmitted from the wheels to the vehicle body. A differential is used to drive the left and right wheels at different speeds, adapting to various driving conditions.

[0003] However, there is only one degree of rotational freedom between the rear suspension and the frame. When an all-terrain vehicle is driving on some complex terrain, the stress between the rear suspension and the frame is more complex, which can easily cause damage to the rear suspension and affect the performance of the differential, resulting in the all-terrain vehicle being unstable under complex driving conditions. Summary of the Invention

[0004] In view of the above problems, this application provides a rear axle assembly and an all-terrain vehicle to solve the technical problem of unstable driving of all-terrain vehicles under complex driving conditions.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0006] One aspect of this application provides a rear axle assembly, comprising: a left suspension, a right suspension, and a differential. The left suspension and the right suspension are spaced apart relative to each other in a first horizontal direction. The left suspension has a first end and a second end opposite to each other along the first horizontal direction. The first end is configured to be rotatably connected to the left wheel, and the second end is configured to be rotatably connected to the left end of the vehicle frame. The right suspension has a third end and a fourth end opposite to each other along the first horizontal direction. The third end is configured to be rotatably connected to the right wheel, and the fourth end is configured to be rotatably connected to the right end of the vehicle frame. The differential has a first output end and a second output end. The first output end is configured to be connected to the left wheel via a first rotating shaft, and the second output end is configured to be connected to the right wheel via a second rotating shaft. In the first horizontal direction, the first output end is spaced apart from the second end of the left suspension by a first preset distance, and the second output end is spaced apart from the fourth end of the right suspension by a second preset distance.

[0007] In one possible implementation, the left suspension includes an upper left suspension and a lower left suspension, which are vertically spaced apart. One end of each of the upper left suspension and the lower left suspension is configured to be rotatably connected to the left wheel, and the other ends of each are configured to be rotatably connected to the left end of the vehicle frame. The other end of the upper left suspension has a first axis of rotation extending in a second horizontal direction, and the other end of the lower left suspension has a second axis of rotation extending in a second horizontal direction, which is the direction of travel of the vehicle and is perpendicular to the first horizontal direction. In the first horizontal direction, the distance between the first axis of rotation and the left wheel is not equal to the distance between the second axis of rotation and the left wheel.

[0008] In one possible implementation, the distance between the first rotation axis and the left wheel is less than the distance between the second rotation axis and the left wheel.

[0009] In one possible implementation, the upper left suspension includes a first upper left suspension and a second upper left suspension. One end of the first upper left suspension and one end of the second upper left suspension intersect and are both configured to be rotatably connected to the left wheel. The other ends of the first upper left suspension and the second upper left suspension are at a predetermined distance along the second horizontal direction. The other ends of the first upper left suspension and the second upper left suspension are both configured to be rotatably connected to the left end of the frame. The rotation axis of the other end of the first upper left suspension and the rotation axis of the other end of the second upper left suspension coincide.

[0010] In one possible implementation, the lower left suspension includes a first lower left suspension and a second lower left suspension. One end of the first lower left suspension and one end of the second lower left suspension intersect and are both configured to be rotatably connected to the left wheel. The other ends of the first lower left suspension and the second lower left suspension are at a predetermined distance along the second horizontal direction. The other ends of the first lower left suspension and the second lower left suspension are both configured to be rotatably connected to the left end of the frame. The rotation axis of the other end of the first lower left suspension and the rotation axis of the other end of the second lower left suspension coincide.

[0011] In one possible implementation, the right suspension includes an upper right suspension and a lower right suspension, which are vertically spaced apart. One end of each of the upper right suspension and the lower right suspension is configured to be rotatably connected to the right wheel, and the other ends of each of the upper right suspension and the lower right suspension are configured to be rotatably connected to the right end of the frame. The other end of the upper right suspension has a third axis of rotation extending in a second horizontal direction, and the other end of the lower right suspension has a fourth axis of rotation extending in the second horizontal direction. In the first horizontal direction, the distance between the third axis of rotation and the right wheel is not equal to the distance between the fourth axis of rotation and the right wheel.

[0012] In one possible implementation, the distance between the third rotation axis and the right wheel is less than the distance between the fourth rotation axis and the right wheel.

[0013] In one possible implementation, the upper right suspension includes a first upper right suspension and a second upper right suspension. One end of the first upper right suspension and one end of the second upper right suspension intersect and are both configured to be rotatably connected to the right wheel. The other ends of the first upper right suspension and the second upper right suspension are at a predetermined distance along the second horizontal direction. The other ends of the first upper right suspension and the second upper right suspension are both configured to be rotatably connected to the right end of the frame. The rotation axis of the other end of the first upper right suspension and the rotation axis of the other end of the second upper right suspension coincide.

[0014] In one possible implementation, the lower right suspension includes a first lower right suspension and a second lower right suspension. One end of the first lower right suspension and one end of the second lower right suspension intersect and are both configured to be rotatably connected to the right wheel. The other ends of the first lower right suspension and the second lower right suspension are at a predetermined distance along the second horizontal direction. The other ends of the first lower right suspension and the second lower right suspension are both configured to be rotatably connected to the right end of the vehicle frame. The rotation axis of the other end of the first lower right suspension and the rotation axis of the other end of the second lower right suspension coincide.

[0015] Another aspect of this application provides an all-terrain vehicle that includes the rear axle assembly described above.

[0016] This application provides a rear axle assembly and an all-terrain vehicle. The left and right suspensions of the rear axle assembly are spaced apart relative to each other in a first horizontal direction. The left suspension has a first end and a second end opposite to each other along the first horizontal direction. The first end is rotatably connected to the left wheel, and the second end is rotatably connected to the left end of the vehicle frame. The right suspension has a third end and a fourth end opposite to each other along the first horizontal direction. The third end is rotatably connected to the right wheel, and the fourth end is rotatably connected to the right end of the vehicle frame. The differential has a first output end and a second output end. The first output end is connected to the left wheel via a first rotating shaft, and the second output end is connected to the right wheel via a second rotating shaft. In the first horizontal direction, the first output end is spaced apart from the second end of the left suspension by a first preset distance, and the second output end is spaced apart from the fourth end of the right suspension by a second preset distance. This arrangement positions the first and second output ends of the differential on the outside of the left and right suspensions, improving the stability of the all-terrain vehicle under various driving conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This application provides a schematic diagram of the structure of the rear axle assembly perpendicular to the vehicle's direction of travel, as shown in the embodiments of this application. Figure 1 ;

[0019] Figure 2 A top view of the rear axle assembly provided in an embodiment of this application;

[0020] Figure 3 This application provides a schematic diagram of the structure of the rear axle assembly perpendicular to the vehicle's direction of travel, as shown in the embodiments of this application. Figure 2 .

[0021] Explanation of reference numerals in the attached figures:

[0022] 100: Differential;

[0023] 200: Left suspension;

[0024] 201: Upper left hanging; 202: Lower left hanging;

[0025] 2011: First upper left hanging; 2012: Second upper left hanging; 2021: First lower left hanging; 2022: Second lower left hanging;

[0026] 300: Right-hand suspension;

[0027] 301: Upper right hanging; 302: Lower right hanging;

[0028] 3011: First upper right suspension; 3012: Second upper right suspension; 3021: First lower right suspension; 3022: Second lower right suspension;

[0029] 401: Left wheel axle connecting bracket; 402: Right wheel axle connecting bracket;

[0030] 501: Left shock absorber; 502: Right shock absorber;

[0031] 5011: Top left installation point; 5021: Top right installation point;

[0032] 600: Stabilizer bar;

[0033] 601: First longitudinal bar; 602: Second longitudinal bar; 603: Cross bar;

[0034] 6011: First installation point; 6021: Second installation point. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0036] This application provides a rear axle assembly, referencing... Figure 1 , Figure 1 This is a schematic diagram of the rear axle assembly in a direction perpendicular to the vehicle's direction of travel, provided in an embodiment of this application. Figure 2 This is a top view of the rear axle assembly provided in an embodiment of this application; the rear axle assembly can be applied to all-terrain vehicles or other vehicles.

[0037] The rear axle assembly includes: a differential 100, a left suspension 200, and a right suspension 300. The differential 100 is connected to both the left and right wheels and is used to drive the left and right wheels to rotate at different speeds to adapt to various driving conditions. The left suspension 200 and right suspension 300 are located between the left and right wheels. The left suspension 200 is used to connect the left wheel to the frame, and the right suspension 300 is used to connect the right wheel to the frame to provide support and control, making the all-terrain vehicle more stable and safer during driving.

[0038] In the first horizontal direction (the width direction of the vehicle, where the vehicle's direction of travel is...), Figure 1 The direction perpendicular to the paper shown is the first horizontal direction, which is perpendicular to the vehicle's direction of travel. Figure 1 In the left-right direction shown, the left suspension 200 and the right suspension 300 are arranged at intervals relative to each other. The left suspension 200 has a first end and a second end opposite to each other along a first horizontal direction. The first end is configured to be rotatably connected to the left wheel, and the second end is configured to be rotatably connected to the left end of the frame. Figure 1 Both the first end and the second end of the left suspension 200 can rotate up and down. When the first end of the left suspension 200 rotates upward, the second end of the left suspension 200 rotates downward; and vice versa.

[0039] Similarly, the right suspension 300 along the first horizontal direction ( Figure 1 The vehicle (shown in the left-right direction) has opposing third and fourth ends, the third end being configured to rotatably connect with the right wheel, and the fourth end being configured to rotatably connect with the right end of the frame. (See reference...) Figure 1 Both the third and fourth ends of the right suspension 300 can rotate up and down. When the third end of the right suspension 300 rotates upward, the fourth end of the right suspension 300 rotates downward; and vice versa.

[0040] The differential 100 is located between the left wheel and the right wheel, and also between the left suspension 200 and the right suspension 300. The differential 100 has a first output end and a second output end. The first output end is configured to be connected to the left wheel via a first rotating shaft, and the second output end is configured to be connected to the right wheel via a second rotating shaft, so as to adjust the speed difference between the left wheel and the right wheel when the all-terrain vehicle is in motion.

[0041] In the first horizontal direction ( Figure 1 In the left-right direction shown, the distance between the first output terminal and the left wheel is a first distance a, the distance between the second output terminal and the right wheel is a second distance b, the distance between the second end of the left suspension 200 and the left wheel is a third distance, and the distance between the fourth end of the right suspension 300 and the right wheel is a fourth distance; wherein, the first distance a is greater than the third distance, and the second distance b is greater than the fourth distance. This ensures that the first output terminal is spaced a first preset distance from the second end of the left suspension 200, and the second output terminal is also spaced a second preset distance from the fourth end of the right suspension 300. That is, when the differential 100 is positioned between the left suspension 200 and the right suspension 300, both the first and second output terminals of the differential 100 are located outside the left suspension 200 and the right suspension 300.

[0042] It should be noted that the first distance 'a' and the third distance are determined based on the vertical plane where the rotation center of the left wheel is located; similarly, the second distance 'b' and the fourth distance are determined based on the vertical plane where the rotation center of the right wheel is located.

[0043] The rear axle assembly provided in this application embodiment has its left suspension 200 and right suspension 300 in the first horizontal direction ( Figure 1 and Figure 2 The left suspension 200 is arranged at relative intervals in the left-right direction (as shown in the diagram). Along the first horizontal direction, the left suspension 200 has a first end and a second end, the first end being rotatably connected to the left wheel, and the second end being rotatably connected to the left end of the frame. The right suspension 300 has a third end and a fourth end, along the first horizontal direction. The third end is rotatably connected to the right wheel, and the fourth end is rotatably connected to the right end of the frame. A differential 100 is disposed between the left suspension 200 and the right suspension 300. The differential 100 has a first output end and a second output end. The first output end is connected to the left wheel via a first rotating shaft, and the second output end is connected to the right wheel via a second rotating shaft. In the first horizontal direction, the distance between the first output end and the left wheel is a first distance a, the distance between the second output end and the right wheel is a second distance b, the distance between the second end of the left suspension and the left wheel is a third distance, and the distance between the fourth end of the right suspension and the right wheel is a fourth distance. Wherein, the first distance a is greater than the third distance, and the second distance b is greater than the fourth distance. This design ensures that both the first and second output ends of the differential 100 are located on the outside of the left suspension 200, thereby improving the stability of the all-terrain vehicle under various driving conditions.

[0044] In this embodiment of the application, the left suspension 200 includes an upper left suspension 201 and a lower left suspension 202, which are arranged vertically ( Figure 1 The vertical direction shown (perpendicular to the vehicle's direction of travel) is arranged at intervals. One end of the upper left suspension 201 and one end of the lower left suspension 202 are both configured to be rotatably connected to the left wheel, and the other ends of the upper left suspension 201 and the lower left suspension 202 are both configured to be rotatably connected to the left end of the frame. The other end of the upper left suspension 201 has a second horizontal direction (which is the vehicle's forward and backward direction, also...) Figure 1 The first axis of rotation extends in a direction perpendicular to the paper (as shown), and the other end of the lower left suspension 202 has a second axis of rotation extending in a second horizontal direction. The first axis of rotation and the second axis of rotation are parallel.

[0045] In the first horizontal direction ( Figure 1 In the left-right direction shown, the distance between the first rotation axis and the left wheel is the fifth distance d, and the distance between the second rotation axis and the left wheel is the sixth distance c. The fifth distance d and the sixth distance c are not equal. That is to say, refer to Figure 1 As shown, the vertical plane containing the first axis of rotation does not coincide with the vertical plane containing the second axis of rotation.

[0046] In the above embodiments of this application, the fifth distance d can be less than the sixth distance c, so that the lower left suspension 202 is closer to the frame, which improves the support force of the left suspension 200 when the all-terrain vehicle is driving under various driving conditions, and makes the performance of the left suspension 200 better.

[0047] In the above embodiments of this application, the upper left suspension 201 may include a first upper left suspension 2011 and a second upper left suspension 2012. One end of the first upper left suspension 2011 and one end of the second upper left suspension 2012 intersect and are both rotatably connected to the left wheel. The other end of the first upper left suspension 2011 and the other end of the second upper left suspension 2012 are along a second horizontal direction ( Figure 2 The vehicle is shown traveling in the forward and backward direction. Figure 1 The direction perpendicular to the paper shown has a preset distance, that is, from left to right ( Figure 2 As shown from left to right, the angle between the first upper left suspension 2011 and the second upper left suspension 2012 gradually increases; the other end of the first upper left suspension 2011 and the other end of the second upper left suspension 2012 are rotatably connected to the left end of the frame, and the rotation axis of the other end of the first upper left suspension 2011 and the rotation axis of the other end of the second upper left suspension 2012 coincide, making the rotational connection between the upper left suspension 201 and the frame more stable.

[0048] Similarly, in the above embodiments of this application, the lower left suspension 202 includes a first lower left suspension 2021 and a second lower left suspension 2022. One end of the first lower left suspension 2021 and one end of the second lower left suspension 2022 intersect and are both rotatably connected to the left wheel. The other end of the first lower left suspension 2021 and the other end of the second lower left suspension 2022 are along the second horizontal direction ( Figure 2 The vehicle is shown traveling in the forward and backward direction. Figure 1 The direction perpendicular to the paper shown has a preset distance, that is, from left to right ( Figure 2 As shown from left to right, the angle between the first lower left suspension 2021 and the second lower left suspension 2022 gradually increases; the other ends of the first lower left suspension 2021 and the second lower left suspension 2022 are rotatably connected to the left end of the frame; the rotation axis of the other end of the first lower left suspension 2021 and the rotation axis of the other end of the second lower left suspension 2022 coincide, making the rotational connection between the upper left suspension 201 and the frame more stable.

[0049] In this embodiment of the application, the right suspension 300 includes an upper right suspension 301 and a lower right suspension 302, which are arranged vertically ( Figure 1The vertical direction shown is perpendicular to the vehicle's direction of travel. The upper right suspension 301 and the lower right suspension 302 are rotatably connected to the right wheel, while the other ends of both are rotatably connected to the right end of the frame. The other end of the upper right suspension 301 has a second horizontal direction (the second horizontal direction of vehicle travel, also...) Figure 1 The third axis of rotation extends in a direction perpendicular to the paper (as shown), and the other end of the lower right suspension 302 has a fourth axis of rotation extending in a second horizontal direction. The third axis of rotation and the fourth axis of rotation are parallel.

[0050] In the first horizontal direction ( Figure 1 In the left-right direction shown, the distance between the third rotation axis and the right wheel is the seventh distance g, and the distance between the fourth rotation axis and the right wheel is the eighth distance f. The seventh distance g and the eighth distance f are not equal. That is to say, refer to Figure 1 As shown, the vertical plane containing the third axis of rotation does not coincide with the vertical plane containing the fourth axis of rotation.

[0051] In the above embodiments of this application, the seventh distance g is less than the eighth distance f, which makes the lower right suspension 302 closer to the frame, improves the support force of the right suspension 300 when the all-terrain vehicle is driving under various driving conditions, and makes the performance of the right suspension 300 better.

[0052] In the above embodiments of this application, the upper right suspension 301 includes a first upper right suspension 3011 and a second upper right suspension 3012. One end of the first upper right suspension 3011 and one end of the second upper right suspension 3012 intersect and are both rotatably connected to the right wheel. The other end of the first upper right suspension 3011 and the other end of the second upper right suspension 3012 are along the second horizontal direction. Figure 2 The vehicle is shown traveling in the forward and backward direction. Figure 1 The direction perpendicular to the paper shown has a preset distance, that is, from right to left ( Figure 2 As shown from right to left, the angle between the first upper right suspension 3011 and the second upper right suspension 3012 gradually increases; the other end of the first upper right suspension 3011 and the other end of the second upper right suspension 3012 are rotatably connected to the right end of the frame; and the rotation axis of the other end of the first upper right suspension 3011 and the rotation axis of the other end of the second upper right suspension 3012 coincide, making the rotational connection between the upper right suspension 301 and the frame more stable.

[0053] Similarly, in the above embodiments of this application, the lower right suspension 302 includes a first lower right suspension 3021 and a second lower right suspension 3022. One end of the first lower right suspension 3021 and one end of the second lower right suspension 3022 intersect and are both rotatably connected to the right wheel. The other end of the first lower right suspension 3021 and the other end of the second lower right suspension 3022 are along the second horizontal direction ( Figure 2 The second horizontal direction in which the vehicle is traveling is shown. Figure 1 The direction perpendicular to the paper shown has a preset distance, that is, from right to left ( Figure 2 As shown from right to left, the angle between the first lower right suspension 3021 and the second lower right suspension 3022 gradually increases; the other ends of the first lower right suspension 3021 and the second lower right suspension 3022 are rotatably connected to the right end of the frame, and the rotation axis of the other end of the first lower right suspension 3021 and the rotation axis of the other end of the second lower right suspension 3022 coincide, making the rotational connection between the lower right suspension 302 and the frame more stable.

[0054] In this embodiment of the application, the rear axle assembly further includes a left wheel axle connecting bracket 401 and a right wheel axle connecting bracket 402. One end of the left wheel axle connecting bracket 401 is connected to the left wheel, and the other end of the left wheel axle connecting bracket 401 is connected to the first end of the left suspension 200. One end of the right wheel axle connecting bracket 402 is connected to the right wheel, and the other end of the right wheel axle connecting bracket 402 is connected to the third end of the right suspension 300.

[0055] Among them, the left wheel axle connecting bracket 401 includes a vertical direction ( Figure 1 The upper left mounting part and the lower left mounting part are arranged vertically (as shown in the figure). The upper left mounting part is rotatably connected to the first upper left suspension 2011 and the second upper left suspension 2012. The lower left mounting part is rotatably connected to the first lower left suspension 2021 and the second lower left suspension 2022.

[0056] Similarly, the right wheel axle connecting bracket 402 includes components along the vertical direction ( Figure 1 The upper right connecting part and the lower right connecting part are arranged vertically (as shown in the figure). The upper right connecting part is rotatably connected to the first upper right suspension 3011 and the second upper right suspension 3012. The lower right connecting part is rotatably connected to the first lower right suspension 3021 and the second lower right suspension 3022.

[0057] refer to Figure 1In this embodiment, the rear axle assembly further includes a left shock absorber 501 and a right shock absorber 502. The left shock absorber 501 includes an upper left mounting point 5011 and a lower left mounting point. The upper left mounting point 5011 is configured to connect to the vehicle frame, and the lower left mounting point is configured to connect to the left suspension 200. The right shock absorber 502 includes an upper right mounting point 5021 and a lower right mounting point. The upper right mounting point 5021 is configured to connect to the vehicle frame, and the lower right mounting point is configured to connect to the right suspension. 300 connection; both the left shock absorber 501 and the right shock absorber 502 are composed of springs and dampers. When the left suspension 200 and the right suspension 300 are working, the left shock absorber 501 and the right shock absorber 502 produce extension and contraction movements. The spring compression can absorb the impact energy transmitted by the wheel, and the spring extension can release the absorbed energy. At the same time, the released energy is converted into heat dissipation through the damper, realizing the shock absorption effect of the left suspension 200 and the right suspension 300, and improving the comfort of the all-terrain vehicle when driving.

[0058] In the above embodiments of this application, along the first horizontal direction ( Figure 1 As shown in the left and right directions, the distance between the upper left mounting point 5011 and the left wheel is greater than the distance between the lower left mounting point and the left wheel; similarly, the distance between the upper right mounting point 5021 and the right wheel is greater than the distance between the lower right mounting point and the right wheel.

[0059] In the above embodiments of this application, the distance between the upper left mounting point 5011 and the left wheel is the seventh distance e, the second end of the left suspension 200 is rotatably connected to the left end of the frame, and the distance between the second end of the left suspension 200 and the left wheel is the third distance. The seventh distance e is less than the third distance; that is, the upper left mounting point 5011 is located inside the left suspension 200.

[0060] Similarly, the distance between the upper right mounting point 5021 and the right wheel is the eighth distance h. The fourth end of the right suspension 300 is rotatably connected to the right end of the frame. The distance between the fourth end of the right suspension 300 and the right wheel is the fourth distance. The eighth distance h is less than the fourth distance. In other words, the upper right mounting point 5021 is located inside the right suspension 300.

[0061] In this embodiment, the rear axle assembly further includes a stabilizer bar 600, which is horizontally positioned. The two ends of the stabilizer bar 600 are connected to the left suspension 200 and the right suspension 300, respectively, and are vertically aligned (…). Figure 1 In the vertical direction shown, the stabilizer bar 600 is located between the upper left suspension 201 and the lower left suspension 202, and also between the upper right suspension 301 and the lower right suspension 302; in the second horizontal direction (the direction of vehicle travel), also... Figure 2As shown in the vertical direction, the stabilizer bar 600 extends from the left suspension 200 and the right suspension 300, located behind the left suspension 200 and the right suspension 300. The stabilizer bar 600 prevents excessive lateral roll of the vehicle body when cornering, keeps the vehicle body in balance, and improves the roll stiffness of the left suspension 200 and the right suspension 300.

[0062] refer to Figure 3 , Figure 3 This application provides a schematic diagram of the structure of the rear axle assembly perpendicular to the vehicle's direction of travel, as shown in the embodiments of this application. Figure 2 The stabilizer bar 600 has a first mounting point 6011 and a second mounting point 6021 at its two ends. The first mounting point 6011 is connected to the left suspension 200 and is positioned in the second horizontal direction (the direction of vehicle travel, also known as the longitudinal direction). Figure 1 On the projection (perpendicular to the plane of the paper as shown), the projection of the first mounting point 6011 coincides with a partial projection of the left shock absorber 501; similarly, the second mounting point 6021 is connected to the right suspension 300, and on the projection in the second horizontal direction, the projection of the second mounting point 6021 coincides with a partial projection of the right shock absorber 502. This improves the anti-roll effect of the stabilizer bar 600, making the all-terrain vehicle structure more stable and ensuring that the all-terrain vehicle can withstand stronger external loads.

[0063] In the above embodiments of this application, the stabilizer bar 600 may be a U-shaped bar, comprising: a first longitudinal bar 601, a second longitudinal bar 602, and a crossbar 603. The first longitudinal bar 601 and the second longitudinal bar 602 are along a second horizontal direction (which is the longitudinal direction of vehicle travel, also known as the horizontal direction). Figure 2 The first vertical bar 601 and the second vertical bar 602 are parallel and spaced apart. One end of the first vertical bar 601 is connected to the left suspension 200, and the other end of the first vertical bar 601 extends out of the left suspension 200 and is located behind the left suspension 200. One end of the second vertical bar 602 is connected to the right suspension 300, and the other end of the second vertical bar 602 extends out of the right suspension 300 and is located behind the right suspension 300. A horizontal bar 603 is disposed between the first vertical bar 601 and the second vertical bar 602, and the horizontal bar 603 is in the first horizontal direction (is Figure 2 The two ends (in the left and right directions shown) are respectively connected to the other end of the first longitudinal bar 601 and the other end of the second longitudinal bar 602.

[0064] The connection between the crossbar 603 and the first longitudinal bar 601 and the second longitudinal bar 602 is an arc-shaped connection, which improves the strength of the stabilizer bar 600.

[0065] This application also provides an all-terrain vehicle that includes the rear axle assembly described above.

[0066] In the above embodiments, the present application provides a rear axle assembly and an all-terrain vehicle, wherein the left suspension 200 and the right suspension 300 of the rear axle assembly are in the first horizontal direction ( Figure 1 and Figure 2 The all-terrain vehicle is arranged at relative intervals in the left-right direction (as shown). The left suspension 200 has a first end and a second end opposite to each other along the first horizontal direction. The first end is rotatably connected to the left wheel, and the second end is rotatably connected to the left end of the frame. The right suspension 300 has a third end and a fourth end opposite to each other along the first horizontal direction. The third end is rotatably connected to the right wheel, and the fourth end is rotatably connected to the right end of the frame. A differential 100 is disposed between the left suspension 200 and the right suspension 300. The differential 100 has a first output end and a second output end. The first output end is connected to the left wheel through a first rotating shaft, and the second output end is connected to the right wheel through a second rotating shaft. In the first horizontal direction, the first output end is spaced a first preset distance from the second end of the left suspension 200, and the second output end is spaced a second preset distance from the fourth end of the right suspension 300. This arrangement ensures that both the first and second output ends of the differential 100 are located outside the left suspension 200 and the right suspension 300, improving the stability of the all-terrain vehicle under various driving conditions.

[0067] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0068] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0069] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0070] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0071] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A rear axle assembly, characterized in that, The application relates to a vehicle suspension system, comprising: a left suspension and a right suspension, the left suspension and the right suspension being oppositely arranged in a first horizontal direction, the left suspension having opposite first and second ends in the first horizontal direction, the first end being configured to be rotatably connected with a left wheel, and the second end being configured to be rotatably connected with a left end of a vehicle frame, the right suspension having opposite third and fourth ends in the first horizontal direction, the third end being configured to be rotatably connected with a right wheel, and the fourth end being configured to be rotatably connected with a right end of the vehicle frame; a differential having a first output end and a second output end, the first output end being configured to be connected with the left wheel through a first rotating shaft, and the second output end being configured to be connected with the right wheel through a second rotating shaft; in the first horizontal direction, the first output end is spaced apart from the second end of the left suspension by a first preset distance, and the second output end is spaced apart from the fourth end of the right suspension by a second preset distance; the left suspension comprises a left upper suspension and a left lower suspension, the left upper suspension and the left lower suspension being oppositely arranged in a vertical direction, one end of the left upper suspension and one end of the left lower suspension being configured to be rotatably connected with the left wheel, and the other end of the left upper suspension and the other end of the left lower suspension being configured to be rotatably connected with the left end of the vehicle frame; the other end of the left upper suspension has a first rotating axis extending in a second horizontal direction, the other end of the left lower suspension has a second rotating axis extending in the second horizontal direction, the second horizontal direction being a running direction of the vehicle, and the second horizontal direction being perpendicular to the first horizontal direction; in the first horizontal direction, a distance between the first rotating axis and the left wheel is not equal to a distance between the second rotating axis and the left wheel; the right suspension comprises a right upper suspension and a right lower suspension, the right upper suspension and the right lower suspension being oppositely arranged in the vertical direction, one end of the right upper suspension and one end of the right lower suspension being configured to be rotatably connected with the right wheel, and the other end of the right upper suspension and the other end of the right lower suspension being configured to be rotatably connected with the right end of the vehicle frame; the other end of the right upper suspension has a third rotating axis extending in the second horizontal direction, and the other end of the right lower suspension has a fourth rotating axis extending in the second horizontal direction; in the first horizontal direction, a distance between the third rotating axis and the right wheel is not equal to a distance between the fourth rotating axis and the right wheel; the distance between the first rotating axis and the left wheel is smaller than the distance between the second rotating axis and the left wheel; the distance between the third rotating axis and the right wheel is smaller than the distance between the fourth rotating axis and the right wheel.

2. The rear axle assembly of claim 1, wherein, The left upper suspension comprises a first left upper suspension and a second left upper suspension, one end of the first left upper suspension and one end of the second left upper suspension intersect and are both configured to be rotationally connected with the left wheel, the other end of the first left upper suspension and the other end of the second left upper suspension have a preset distance along the second horizontal direction, and the other end of the first left upper suspension and the other end of the second left upper suspension are both configured to be rotationally connected with the left end of the frame. The rotation axis of the other end of the first left upper suspension coincides with the rotation axis of the other end of the second left upper suspension.

3. The rear axle assembly of claim 1, wherein, The left lower suspension comprises a first left lower suspension and a second left lower suspension, one end of the first left lower suspension and one end of the second left lower suspension intersect and are both configured to be rotationally connected with the left wheel, the other end of the first left lower suspension and the other end of the second left lower suspension have a preset distance along the second horizontal direction, and the other end of the first left lower suspension and the other end of the second left lower suspension are both configured to be rotationally connected with the left end of the frame. The rotation axis of the other end of the first left lower suspension coincides with the rotation axis of the other end of the second left lower suspension.

4. The rear axle assembly of any of claims 1-3, wherein, The right upper suspension comprises a first right upper suspension and a second right upper suspension, one end of the first right upper suspension and one end of the second right upper suspension intersect and are both configured to be rotationally connected with the right wheel, the other end of the first right upper suspension and the other end of the second right upper suspension have a preset distance along the second horizontal direction, and the other end of the first right upper suspension and the other end of the second right upper suspension are both configured to be rotationally connected with the right end of the frame. The rotation axis of the other end of the first right upper suspension coincides with the rotation axis of the other end of the second right upper suspension.

5. The rear axle assembly of any of claims 1-3, wherein, The right lower suspension comprises a first right lower suspension and a second right lower suspension, one end of the first right lower suspension and one end of the second right lower suspension intersect and are both configured to be rotationally connected with the right wheel, the other end of the first right lower suspension and the other end of the second right lower suspension have a preset distance along the second horizontal direction, and the other end of the first right lower suspension and the other end of the second right lower suspension are both configured to be rotationally connected with the right end of the frame. The rotation axis of the other end of the first right lower suspension coincides with the rotation axis of the other end of the second right lower suspension.

6. An all-terrain vehicle characterized by, The rear axle assembly comprises the rear axle assembly according to any one of claims 1-5.

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