Rear suspension system and vehicle

Abstract

The rear suspension system comprises a rear rocker arm, an upper control rod, a toe-in rod and a lower control rod, the rear rocker arm extends along the X-axis of the vehicle, and the upper control rod, the toe-in rod and the lower control rod extend along the Y-axis of the vehicle and are arranged in the Z-axis direction of the vehicle. The toe-in rod is located between the upper control rod and the lower control rod, and an included angle E formed by the extension direction of the projection of the rear rocker arm in a vertical plane perpendicular to the Y axis and the X axis ranges from-5 degrees to 5 degrees. According to the rear suspension system, the optimization design of the angles and the directions of the rear rocker arms and the corresponding control rods is achieved, arrangement and installation angles of installation points of all the control rods are limited, and the stability of a vehicle during high-altitude driving is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of suspension, in particular to a rear suspension system and a vehicle. Background Art

[0002] An all-terrain vehicle (ATV) is a vehicle that can travel on any terrain. Existing ATVs often have rear suspensions with multiple control levers, and the design of the rear suspension focuses primarily on balancing vehicle handling performance with comfort. This results in poor overall stability for existing ATVs at high speeds. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention proposes a rear suspension system, which achieves an optimized design of the angle and orientation of the rear rocker arm and the corresponding control rod, and also limits the layout and installation angle of the installation points of each control rod, thereby improving the stability of the vehicle when traveling at high altitude.

[0005] An embodiment of the present invention further provides a vehicle comprising the above-mentioned rear suspension system.

[0006] The rear suspension system of the embodiment of the present invention includes a rear swing arm, an upper control rod, a toe rod, and a lower control rod, wherein the rear swing arm extends along the X-axis of the vehicle, the upper control rod, the toe rod, and the lower control rod extend along the Y-axis of the vehicle, and in the Z-axis direction of the vehicle, the toe rod is located between the upper control rod and the lower control rod;

[0007] The angle E formed by the extension direction of the projection of the rear rocker arm in the vertical plane perpendicular to the Y axis and the X axis is -5° to 5°.

[0008] In some embodiments, the angle D formed by the extension direction of the projection of the rear rocker arm in the horizontal plane and the X-axis is 4° to 10°.

[0009] In some embodiments, the X-axis, the Y-axis, and the Z-axis constitute a coordinate system, the origin of the coordinate system is located at the midpoint of a line connecting the wheel centers of two rear wheels of the vehicle, and the end of the rear swing arm facing the front side of the vehicle forms a front point;

[0010] The distance A between the front point and the X-axis along the Y-axis is 400 mm to 520 mm;

[0011] and / or, a distance B between the front point and the Y axis along the X axis is 1100 mm to 1200 mm;

[0012] And / or, a distance C between the front point and the plane where the X-axis and the Y-axis are located is -30 mm to 70 mm.

[0013] The rear suspension system of the embodiment of the present invention includes a rear swing arm, an upper control rod, a toe rod, and a lower control rod, wherein the rear swing arm extends along the X-axis of the vehicle, the upper control rod, the toe rod, and the lower control rod extend along the Y-axis of the vehicle, and in the Z-axis direction of the vehicle, the toe rod is located between the upper control rod and the lower control rod;

[0014] An included angle E1 formed by an extension direction of a projection of the upper control rod in a vertical plane perpendicular to the Y axis and the Z axis is 40° to 50°.

[0015] In some embodiments, an angle D1 formed by an extension direction of a projection of the upper control rod in a horizontal plane and the Y-axis is 8° to 16°.

[0016] In some embodiments, the X-axis, the Y-axis, and the Z-axis form a coordinate system, the origin of the coordinate system is located at the midpoint of a line connecting the wheel centers of two rear wheels of the vehicle, and the end of the upper control rod facing the inner side of the vehicle forms a first inner point;

[0017] A distance A1 between the first inner point and the X-axis along the Y-axis is 50 mm to 70 mm;

[0018] and / or, a distance B1 between the first inner point and the Y axis along the X axis is from -30 mm to 30 mm;

[0019] And / or, a distance C1 between the first inner point and the plane where the X-axis and the Y-axis are located is 500 mm to 600 mm.

[0020] In some embodiments, the upper control rod is configured to form a first outer point at an end thereof facing the outer side of the vehicle;

[0021] A distance A2 between the first outer point and the X-axis along the Y-axis is 650 mm to 700 mm;

[0022] and / or, a distance B2 between the first outer point and the Y axis along the X-axis direction is 80 mm to 140 mm;

[0023] And / or, a distance C2 between the first external point and the plane where the X-axis and the Y-axis are located is 400 mm to 460 mm.

[0024] The rear suspension system of the embodiment of the present invention includes a rear swing arm, an upper control rod, a toe rod, and a lower control rod, wherein the rear swing arm extends along the X-axis of the vehicle, the upper control rod, the toe rod, and the lower control rod extend along the Y-axis of the vehicle, and in the Z-axis direction of the vehicle, the toe rod is located between the upper control rod and the lower control rod;

[0025] An angle E2 formed by an extension direction of a projection of the toe rod in a vertical plane perpendicular to the Y axis and the Z axis is 20° to 30°.

[0026] In some embodiments, an angle D2 formed by an extension direction of a projection of the toe rod in a horizontal plane and the Y-axis is 0° to 8°.

[0027] In some embodiments, the X-axis, the Y-axis, and the Z-axis form a coordinate system, the origin of the coordinate system is located at the midpoint of a line connecting the wheel centers of two rear wheels of the vehicle, and the end of the toe bar facing the inner side of the vehicle forms a second inner point;

[0028] A distance A3 between the second inner point and the X-axis along the Y-axis is 30 mm to 50 mm;

[0029] and / or, a distance B3 between the second inner point and the Y axis along the X-axis direction is 150 mm to 210 mm;

[0030] And / or, a distance C3 between the second inner point and the plane where the X-axis and the Y-axis are located is 80 mm to 140 mm.

[0031] In some embodiments, the toe bar is configured to form a second outer point at an end thereof facing the outer side of the vehicle;

[0032] A distance A4 between the second outer point and the X-axis along the Y-axis is 740 mm to 800 mm;

[0033] and / or, a distance B4 between the second outer point and the Y axis along the X-axis direction is 100 mm to 140 mm;

[0034] And / or, a distance C4 between the second external point and the plane where the X-axis and the Y-axis are located is -20 mm to 20 mm.

[0035] The rear suspension system of the embodiment of the present invention includes a rear swing arm, an upper control rod, a toe rod, and a lower control rod, wherein the rear swing arm extends along the X-axis of the vehicle, the upper control rod, the toe rod, and the lower control rod extend along the Y-axis of the vehicle, and in the Z-axis direction of the vehicle, the toe rod is located between the upper control rod and the lower control rod;

[0036] An included angle E3 formed by an extension direction of a projection of the lower control rod in a vertical plane perpendicular to the Y axis and the Z axis is 35° to 45°.

[0037] In some embodiments, an angle D3 formed by an extension direction of the projection of the lower control rod in the horizontal plane and the Y-axis is 4° to 12°.

[0038] In some embodiments, the X-axis, the Y-axis, and the Z-axis form a coordinate system, the origin of the coordinate system is located at the midpoint of a line connecting the wheel centers of two rear wheels of the vehicle, and the end of the lower control lever facing the inner side of the vehicle forms a third inner point;

[0039] A distance A5 between the third inner point and the X-axis along the Y-axis is 80 mm to 100 mm;

[0040] and / or, a distance B5 between the third inner point and the Y axis along the X-axis direction is 150 mm to 190 mm;

[0041] And / or, a distance C5 between the third inner point and the plane where the X-axis and the Y-axis are located is -10 mm to 15 mm.

[0042] In some embodiments, the lower control rod is configured to form a third outer point at an end thereof facing the outer side of the vehicle;

[0043] A distance A6 between the third outer point and the X-axis along the Y-axis is 750 mm to 790 mm;

[0044] and / or, a distance B6 between the third outer point and the Y axis along the X-axis direction is 50 mm to 70 mm;

[0045] And / or, a distance C6 between the third external point and the plane where the X-axis and the Y-axis are located is 100 mm to 140 mm.

[0046] The vehicle of the embodiment of the present invention includes the rear suspension system as described in any of the above embodiments.

[0047] In some embodiments, further comprising:

[0048] A vehicle frame and a shock absorber, wherein the upper control rod, the front toe rod, the lower control rod, and the shock absorber are all connected between the vehicle frame and the rear swing arm;

[0049] a balancing rod and a connecting rod, wherein the balancing rod is connected to the vehicle frame, and the connecting rod is connected between the balancing rod and the rear rocker arm;

[0050] A rear wheel, wherein the rear swing arm is connected to the rear wheel.

[0051] Beneficial effects: The rear suspension system of the embodiment of the utility model and the vehicle including the rear suspension system, the rear suspension system realizes the optimized design of the angle and orientation of the rear rocker arm and the corresponding control rod, and also limits the arrangement and installation angle of the installation point of each control rod, thereby improving the stability of the vehicle when driving at high altitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a three-dimensional schematic diagram of the rear suspension system of an embodiment of the present utility model.

[0053] Figure 2 It is a left side schematic diagram of the rear suspension system of an embodiment of the present utility model.

[0054] Figure 3 It is a top view schematic diagram of the rear suspension system of an embodiment of the present utility model.

[0055] Figure 4 It is a rear side schematic diagram of the rear suspension system of an embodiment of the present utility model.

[0056] Figure 5 It is a schematic diagram of the rear half of a vehicle according to an embodiment of the present invention.

[0057] Reference numerals:

[0058] 1-Rear swingarm; 11-Front point; 2-Upper control lever; 21-First inner point; 22-First outer point; 3-Toe rod; 31-Second inner point; 32-Second outer point; 4-Lower control lever; 41-Third inner point; 42-Third outer point; 5-Frame; 6-Shock absorber; 7-Stabilizer bar; 8-Connecting rod; 9-Rear wheel. DETAILED DESCRIPTION

[0059] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0060] It should be noted that the X-axis described in the subsequent embodiments is the central axis extending along the front-to-rear direction of the vehicle, the Y-axis can be the axis determined by the wheel centers of the two rear wheels of the vehicle, and the Z-axis is the axis passing through the intersection of the X-axis and the Y-axis and extending along the height direction of the vehicle. The X-axis, Y-axis, and Z-axis form a three-dimensional rectangular coordinate system, and the position where the three axes intersect forms the origin of the three-dimensional rectangular coordinate system.

[0061] The following describes a rear suspension system according to an embodiment of the present invention.

[0062] like Figure 1As shown, the rear suspension system of the embodiment of the present invention includes a rear swing arm 1, an upper control rod 2, a front toe rod 3 and a lower control rod 4, the rear swing arm 1 extends along the X-axis of the vehicle, the upper control rod 2, the front toe rod 3 and the lower control rod 4 extend along the Y-axis of the vehicle, and in the Z-axis direction of the vehicle, the front toe rod 3 is located between the upper control rod 2 and the lower control rod 4.

[0063] For example, two of each of the rear swing arm 1, the upper control rod 2, the front toe rod 3 and the lower control rod 4 can be provided. The rear swing arm 1, the upper control rod 2, the front toe rod 3 and the lower control rod 4 form a group of suspension structures, and the two groups of suspension structures of the rear suspension system are arranged roughly symmetrically in the left and right directions.

[0064] Taking the suspension structure on the right side of the two groups as an example, the upper control rod 2 can be arranged above the rear rocker arm 1, and the upper control rod 2 can generally extend in the left and right directions. One end of the upper control rod 2 can be connected to the rear rocker arm 1 through a connecting rod extending upward from the rear rocker arm 1, specifically through a joint bearing, etc.

[0065] The toe rod 3 and the lower control rod 4 can both be arranged on the rear side of the rear swing arm 1. The toe rod 3 and the lower control rod 4 can both extend generally in the left-right direction, and one end of the toe rod 3 and the lower control rod 4 can be connected to the rear end of the rear swing arm 1 via a joint bearing. In the vertical direction, the toe rod 3 can be located between the upper control rod 2 and the lower control rod 4, and the toe rod 3 is arranged closer to the lower control rod 4 than the upper control rod 2.

[0066] The angle E formed by the projection direction of the rear rocker arm 1 in the vertical plane perpendicular to the Y axis and the X axis is -5° to 5°. Figure 2 As shown, the vertical plane perpendicular to the Y-axis is also the vertical plane perpendicular to the left-right direction. The projection of the rear swing arm 1 on this vertical plane generally extends from the front upper to the rear lower direction. The angle E formed by the projection of the rear swing arm 1 on this vertical plane and the X-axis can be -5°, -4°, -3°, -2°, -1°, 0°, 1°, 2°, 3°, 4°, 5°, etc. This achieves an optimized design of the layout angle of the rear swing arm 1 and improves the stability of the vehicle when traveling at high altitude.

[0067] In some embodiments, the angle D formed by the extension direction of the projection of the rear rocker arm 1 in the horizontal plane and the X-axis is 4° to 10°. Figure 3 As shown, the horizontal plane can be regarded as a plane perpendicular to the Z-axis, and the angle D formed by the projection of the rear swing arm 1 on the horizontal plane and the X-axis can be 4°, 5°, 6°, 7°, 8°, 9°, 10°, etc. This further achieves the optimized design of the layout azimuth inclination angle of the rear swing arm 1 and further improves the driving stability of the vehicle.

[0068] In some embodiments, as Figures 1 to 3As shown, the X-axis, Y-axis, and Z-axis constitute a coordinate system, the origin of the coordinate system is located at the midpoint of the line connecting the wheel centers of the two rear wheels 9 of the vehicle, and the rear swing arm 1 is used to form a front point 11 at the end facing the front side of the vehicle.

[0069] The distance A between the front point 11 and the X axis along the Y axis is 400 mm to 520 mm. Figure 3 As shown, the distance A can be regarded as the distance between the projection of the front point 11 on the horizontal plane passing through the origin and the X-axis. The distance A can be 400 mm, 450 mm, 480 mm, 500 mm, 510 mm, 520 mm, etc. This allows the front end of the rear swing arm 1 to be positioned in the left-right direction, further improving the vehicle's driving stability.

[0070] In some embodiments, the distance B between the front point 11 and the Y axis along the X axis is 1100 mm to 1200 mm. Figure 3 As shown, the distance B can be regarded as the distance between the projection of the front point 11 on the horizontal plane passing through the origin and the Y axis. The distance B can be specifically 1100 mm, 1110 mm, 1120 mm, 1130 mm, 1140 mm, 1150 mm, 1160 mm, 1170 mm, 1180 mm, 1190 mm, 1200 mm, etc. In this way, the position of the front end of the rear swing arm 1 in the front-to-back direction is limited, further improving the driving stability of the vehicle.

[0071] In some embodiments, the distance C between the front point 11 and the plane containing the X-axis and the Y-axis is between -30 mm and 70 mm. For example, the plane containing the X-axis and the Y-axis can be considered a horizontal plane passing through the origin, and the distance between the front point 11 and this horizontal plane is the distance C. Distance C can be -30 mm, -20 mm, -10 mm, 0 mm, 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, etc. This allows the vertical position of the front end of the rear swing arm 1 to be controlled, further improving vehicle stability.

[0072] The following describes a rear suspension system according to another embodiment of the present invention.

[0073] The rear suspension system of the embodiment of the present invention includes a rear swing arm 1, an upper control rod 2, a front toe rod 3 and a lower control rod 4. The rear swing arm 1 extends along the X-axis of the vehicle, the upper control rod 2, the front toe rod 3 and the lower control rod 4 extend along the Y-axis of the vehicle, and in the Z-axis direction of the vehicle, the front toe rod 3 is located between the upper control rod 2 and the lower control rod 4.

[0074] The specific arrangement positions and orientations of the rear swing arm 1, the upper control rod 2, the toe rod 3 and the lower control rod 4 may be as described in the above embodiments and will not be repeated here.

[0075] The angle E1 formed by the projection direction of the upper control rod 2 in the vertical plane perpendicular to the Y axis and the Z axis is 40° to 50°. Figure 2 As shown, the angle E1 can be 40°, 41°, 42°, 45°, 47°, 49°, 50°, etc. Thus, the spatial orientation of the upper control rod 2 in the vertical direction is limited, further improving the driving stability of the vehicle.

[0076] In some embodiments, the angle D1 formed by the extension direction of the projection of the upper control rod 2 in the horizontal plane and the Y axis is 8° to 16°. Figure 3 As shown, the angle D1 can be 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, 16°, etc. Thus, the spatial orientation of the upper control rod 2 in the left and right directions is limited, further improving the driving stability of the vehicle.

[0077] In some embodiments, the X-axis, Y-axis, and Z-axis form a coordinate system, the origin of which is located at the midpoint of the line connecting the wheel centers of the two rear wheels 9 of the vehicle, and the end of the upper control rod 2 facing the inner side of the vehicle forms a first inner point 21. For example, Figures 1 to 4 As shown, taking the upper control rod 2 on the right side as an example, the first inner point 21 may be the left end portion of the upper control rod 2 .

[0078] The distance A1 between the first inner point 21 and the X axis along the Y axis is 50 mm to 70 mm. Figure 3 As shown, the distance A1 can be 50mm, 52mm, 54mm, 56mm, 57mm, 58mm, 59mm, 70mm, etc. Thus, the position of the inner end of the upper control rod 2 in the left-right direction is limited, further improving the driving stability of the vehicle.

[0079] In some embodiments, the distance B1 between the first inner point 21 and the Y axis along the X axis is -30 mm to 30 mm. Figure 3 As shown, the distance B1 can be specifically -30mm, -20mm, -10mm, 0mm, 10mm, 20mm, 30mm, etc. Thus, the position of the inner end of the upper control rod 2 in the front-rear direction is limited, further improving the driving stability of the vehicle.

[0080] In some embodiments, the distance C1 between the first inner point 21 and the plane where the X-axis and the Y-axis are located is 500 mm to 600 mm. Figure 4As shown, the distance C1 can be 500mm, 510mm, 520mm, 530mm, 540mm, 550mm, 560mm, 570mm, 580mm, 590mm, 600mm, etc. Thus, the position of the inner end of the upper control rod 2 in the vertical direction is limited, further improving the driving stability of the vehicle.

[0081] In some embodiments, the end of the upper control rod 2 facing the outside of the vehicle forms a first outer point 22. For example, taking the upper control rod 2 on the right side as an example, the first outer point 22 can be the right end of the upper control rod 2.

[0082] The distance A2 between the first outer point 22 and the X axis along the Y axis is 650 mm to 700 mm. Figure 3 As shown, the distance A2 can be specifically 650mm, 660mm, 670mm, 680mm, 690mm, 700mm, etc. Thus, the position of the outer end of the upper control rod 2 in the left-right direction is limited, further improving the stability of the vehicle.

[0083] In some embodiments, the distance B2 between the first outer point 22 and the Y axis along the X axis is 80 mm to 140 mm. Figure 3 As shown, the distance B2 can be specifically 80mm, 85mm, 90mm, 95mm, 100mm, 105mm, 110mm, 115mm, 120mm, 125mm, 130mm, 135mm, 140mm, etc. Thus, the position of the outer end of the upper control rod 2 in the front-to-rear direction is limited, further improving the driving stability of the vehicle.

[0084] In some embodiments, the distance C2 between the first external point 22 and the plane where the X-axis and the Y-axis are located is 400 mm to 460 mm. Figure 4 As shown, the distance C2 can be specifically 400mm, 410mm, 420mm, 430mm, 440mm, 450mm, 460mm, etc. Thus, the position of the outer end of the upper control rod 2 in the vertical direction is limited, further improving the stability of the vehicle.

[0085] The following describes a rear suspension system according to another embodiment of the present invention.

[0086] The rear suspension system of the embodiment of the present invention includes a rear swing arm 1, an upper control rod 2, a front toe rod 3 and a lower control rod 4. The rear swing arm 1 extends along the X-axis of the vehicle, the upper control rod 2, the front toe rod 3 and the lower control rod 4 extend along the Y-axis of the vehicle, and in the Z-axis direction of the vehicle, the front toe rod 3 is located between the upper control rod 2 and the lower control rod 4.

[0087] The specific arrangement positions and orientations of the rear swing arm 1, the upper control rod 2, the toe rod 3 and the lower control rod 4 may be as described in the above embodiments and will not be repeated here.

[0088] The angle E2 formed by the extension direction of the projection of the front toe rod 3 in the vertical plane perpendicular to the Y axis and the Z axis is 20° to 30°. Figure 2 As shown, the angle E2 can be specifically 20°, 21°, 22°, 25°, 27°, 29°, 30°, etc. Thus, the spatial orientation of the front toe rod 3 in the vertical direction is limited, and the driving stability of the vehicle is further improved.

[0089] In some embodiments, the angle D2 formed by the extension direction of the projection of the front toe rod 3 in the horizontal plane and the Y axis is 0° to 8°. Figure 3 As shown, the angle D2 can be 0°, 1°, 2°, 3°, 5°, 6°, 7°, 8°, etc. This allows the spatial orientation of the toe rod 3 in the left-right direction to be limited, further improving the vehicle's driving stability.

[0090] In some embodiments, the X-axis, Y-axis, and Z-axis form a coordinate system, the origin of which is located at the midpoint of the line connecting the wheel centers of the two rear wheels 9 of the vehicle, and the end of the toe rod 3 facing the inner side of the vehicle forms a second inner point 31. Figures 1 to 4 As shown, taking the right toe rod 3 as an example, the second inner point 31 may be the left end portion of the toe rod 3 .

[0091] The distance A3 between the second inner point 31 and the X axis along the Y axis is 30 mm to 50 mm. Figure 3 As shown, the distance A3 can be 30 mm, 32 mm, 34 mm, 36 mm, 37 mm, 38 mm, 39 mm, 40 mm, 42 mm, 45 mm, 48 mm, 49 mm, 50 mm, etc. Thus, the position of the inner end of the front toe rod 3 in the left-right direction is limited, further improving the driving stability of the vehicle.

[0092] In some embodiments, the distance B3 between the second inner point 31 and the Y axis along the X axis is 150 mm to 210 mm. Figure 3 As shown, the distance B3 can be 150 mm, 155 mm, 160 mm, 165 mm, 170 mm, 175 mm, 180 mm, 185 mm, 190 mm, 195 mm, 200 mm, 205 mm, 210 mm, etc. Thus, the position of the inner end of the front toe rod 3 in the front-toe direction is limited, further improving the driving stability of the vehicle.

[0093] In some embodiments, the distance C3 between the second inner point 31 and the plane where the X-axis and the Y-axis are located is 80 mm to 140 mm. Figure 4 As shown, the distance C3 can be 80 mm, 90 mm, 100 mm, 110 mm, 120 mm, 130 mm, 140 mm, etc. Thus, the position of the inner end of the front toe rod 3 in the vertical direction is limited, further improving the driving stability of the vehicle.

[0094] In some embodiments, the end of the toe rod 3 facing the vehicle outer side forms a second outer point 32. For example, taking the right toe rod 3 as an example, the second outer point 32 may be the right end of the toe rod 3.

[0095] The distance A4 between the second outer point 32 and the X axis along the Y axis is 740 mm to 800 mm. Figure 4 As shown, the distance A4 can be 740 mm, 750 mm, 760 mm, 780 mm, 790 mm, 800 mm, etc. Thus, the position of the outer end of the front toe rod 3 in the left-right direction is limited, further improving the driving stability of the vehicle.

[0096] In some embodiments, the distance B4 between the second outer point 32 and the Y axis along the X axis is 100 mm to 140 mm. Figure 2 As shown, the distance B4 can be 100 mm, 105 mm, 110 mm, 115 mm, 120 mm, 125 mm, 130 mm, 135 mm, 140 mm, etc. Thus, the position of the outer end of the front toe rod 3 in the front-toe direction is limited, further improving the driving stability of the vehicle.

[0097] In some embodiments, the distance C4 between the second outer point 32 and the plane where the X-axis and the Y-axis are located is -20 mm to 20 mm. Figure 4 As shown, the distance C4 can be specifically -20mm, -10mm, 0mm, 10mm, 20mm, etc. Thus, the position of the outer end of the front toe rod 3 in the vertical direction is limited, further improving the driving stability of the vehicle.

[0098] The following describes a rear suspension system according to another embodiment of the present invention.

[0099] The rear suspension system of the embodiment of the present invention includes a rear swing arm 1, an upper control rod 2, a front toe rod 3 and a lower control rod 4. The rear swing arm 1 extends along the X-axis of the vehicle, the upper control rod 2, the front toe rod 3 and the lower control rod 4 extend along the Y-axis of the vehicle, and in the Z-axis direction of the vehicle, the front toe rod 3 is located between the upper control rod 2 and the lower control rod 4.

[0100] The specific arrangement positions and orientations of the rear swing arm 1, the upper control rod 2, the toe rod 3 and the lower control rod 4 may be as described in the above embodiments and will not be repeated here.

[0101] The angle E3 formed by the extension direction of the projection of the lower control rod 4 in the vertical plane perpendicular to the Y axis and the Z axis is 35° to 45°. Figure 2 As shown, the angle E3 can be specifically 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 45°, etc. Thus, the spatial orientation of the lower control rod 4 in the vertical direction is limited, further improving the driving stability of the vehicle.

[0102] In some embodiments, the angle D3 formed by the extension direction of the projection of the lower control rod 4 in the horizontal plane and the Y axis is 4° to 12°. Figure 3 As shown, the angle D3 can be 4°, 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, etc. Thus, the spatial orientation of the lower control rod 4 in the left and right directions is limited, further improving the driving stability of the vehicle.

[0103] In some embodiments, the X-axis, Y-axis, and Z-axis form a coordinate system, the origin of which is located at the midpoint of the line connecting the wheel centers of the two rear wheels 9 of the vehicle, and the end of the lower control rod 4 facing the inner side of the vehicle forms a third inner point 41. Figures 1 to 4 As shown, taking the lower control rod 4 on the right side as an example, the third inner point 41 may be the left end portion of the lower control rod 4 .

[0104] The distance A5 between the third inner point 41 and the X axis along the Y axis is 80 mm to 100 mm. Figure 4 As shown, the distance A5 can be 80mm, 82mm, 84mm, 86mm, 87mm, 88mm, 89mm, 90mm, 92mm, 95mm, 98mm, 99mm, 100mm, etc. Thus, the position of the inner end of the lower control rod 4 in the left-right direction is limited, further improving the stability of the vehicle.

[0105] In some embodiments, the distance B5 between the third inner point 41 and the Y axis along the X axis is 150 mm to 190 mm. Figure 2 As shown, the distance B5 can be specifically 150mm, 155mm, 160mm, 165mm, 170mm, 175mm, 180mm, 185mm, 190mm, etc. Thus, the position of the inner end of the lower control rod 4 in the front-rear direction is limited, further improving the stability of the vehicle.

[0106] In some embodiments, the distance C5 between the third inner point 41 and the plane where the X-axis and the Y-axis are located is -10 mm to 15 mm. Figure 4 As shown, the distance C5 can be -10mm, -5mm, 0mm, 5mm, 10mm, 15mm, etc. Thus, the position of the inner end of the lower control rod 4 in the vertical direction is limited, further improving the driving stability of the vehicle.

[0107] In some embodiments, the end of the lower control lever 4 facing the outside of the vehicle forms a third outer point 42. For example, taking the lower control lever 4 on the right side as an example, the third outer point 42 can be the right end of the lower control lever 4.

[0108] The distance A6 between the third outer point 42 and the X axis along the Y axis is 750 mm to 790 mm. Figure 4 As shown, the distance A6 can be specifically 750 mm, 760 mm, 780 mm, 790 mm, etc. Thus, the position of the outer end of the lower control rod 4 in the left-right direction is limited, further improving the driving stability of the vehicle.

[0109] In some embodiments, the distance B6 between the third outer point 42 and the Y axis along the X axis is 50 mm to 70 mm. Figure 2 As shown, the distance B4 can be specifically 50 mm, 55 mm, 60 mm, 65 mm, 70 mm, etc. Thus, the position of the outer end of the lower control rod 4 in the front-rear direction is limited, further improving the driving stability of the vehicle.

[0110] In some embodiments, the distance C6 between the third outer point 42 and the plane where the X-axis and the Y-axis are located is 100 mm to 140 mm. Figure 4 As shown, the distance C6 can be specifically 100 mm, 115 mm, 120 mm, 125 mm, 130 mm, 135 mm, 140 mm, etc. Thus, the position of the outer end of the lower control rod 4 in the vertical direction is limited, further improving the stability of the vehicle.

[0111] The following describes a vehicle according to an embodiment of the present invention.

[0112] The vehicle of the embodiment of the present invention may specifically be an all-terrain vehicle, and the vehicle includes a rear suspension system, which may be the rear suspension system described in any of the above embodiments.

[0113] In some embodiments, as Figure 5As shown, the vehicle also includes a frame 5, a shock absorber 6, a balancing bar 7, a connecting rod 8 and a rear wheel 9. The upper control rod 2, the front toe rod 3, the lower control rod 4 and the shock absorber 6 are all connected between the frame 5 and the rear rocker arm 1. The balancing bar 7 is connected to the frame 5. The connecting rod 8 is connected between the balancing bar 7 and the rear rocker arm 1. The rear rocker arm 1 is connected to the rear wheel 9.

[0114] For example, the shock absorber 6 generally extends in the vertical direction, and its upper and lower ends can be connected to the vehicle frame 5 and the rear swing arm 1, respectively, via spherical bearings. The upper control lever 2, the toe lever 3, and the lower control lever 4 can also be connected to the vehicle frame 5 and the rear swing arm 1, respectively, via spherical bearings. A stabilizer bar 7 can be positioned above the rear swing arm 1. The top end of a connecting rod 8 can be connected to the rear end of the stabilizer bar 7 via a spherical bearing, and the bottom end of the connecting rod 8 can be connected to the rear swing arm 1 via a spherical bearing. The rear swing arm 1 can then be fixed to the rear wheel 9 via bolts.

[0115] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. A rear suspension system, characterized in that: The vehicle comprises a rear swing arm, an upper control rod, a toe rod and a lower control rod, wherein the rear swing arm extends along the X-axis of the vehicle, the upper control rod, the toe rod and the lower control rod extend along the Y-axis of the vehicle, and in the Z-axis direction of the vehicle, the toe rod is located between the upper control rod and the lower control rod; The angle E formed by the extension direction of the projection of the rear rocker arm in the vertical plane perpendicular to the Y axis and the X axis is -5° to 5°.

2. The rear suspension system according to claim 1, characterized in that The angle D formed by the extension direction of the projection of the rear rocker arm in the horizontal plane and the X-axis is 4° to 10°.

3. The rear suspension system according to claim 1 or 2, characterized in that: The X-axis, the Y-axis, and the Z-axis form a coordinate system, the origin of the coordinate system is located at the midpoint of a line connecting the wheel centers of the two rear wheels of the vehicle, and the end of the rear swing arm facing the front side of the vehicle forms a front point; The distance A between the front point and the X-axis along the Y-axis is 400 mm to 520 mm; and / or, a distance B between the front point and the Y axis along the X axis is 1100 mm to 1200 mm; And / or, a distance C between the front point and the plane where the X-axis and the Y-axis are located is -30 mm to 70 mm.

4. A rear suspension system, characterized in that: The vehicle comprises a rear swing arm, an upper control rod, a toe rod and a lower control rod, wherein the rear swing arm extends along the X-axis of the vehicle, the upper control rod, the toe rod and the lower control rod extend along the Y-axis of the vehicle, and in the Z-axis direction of the vehicle, the toe rod is located between the upper control rod and the lower control rod; An included angle E1 formed by an extension direction of a projection of the upper control rod in a vertical plane perpendicular to the Y axis and the Z axis is 40° to 50°.

5. The rear suspension system according to claim 4, characterized in that An included angle D1 formed by an extension direction of the projection of the upper control rod in the horizontal plane and the Y-axis is 8° to 16°.

6. The rear suspension system according to claim 4 or 5, characterized in that: The X-axis, the Y-axis, and the Z-axis form a coordinate system, the origin of the coordinate system is located at the midpoint of a line connecting the wheel centers of the two rear wheels of the vehicle, and the end of the upper control rod facing the inner side of the vehicle forms a first inner point; A distance A1 between the first inner point and the X-axis along the Y-axis is 50 mm to 70 mm; and / or, a distance B1 between the first inner point and the Y axis along the X axis is from -30 mm to 30 mm; And / or, a distance C1 between the first inner point and the plane where the X-axis and the Y-axis are located is 500 mm to 600 mm.

7. The rear suspension system according to claim 6, characterized in that The upper control rod is configured to have an end portion facing the outside of the vehicle forming a first outer point; A distance A2 between the first outer point and the X-axis along the Y-axis is 650 mm to 700 mm; and / or, a distance B2 between the first outer point and the Y axis along the X-axis direction is 80 mm to 140 mm; And / or, a distance C2 between the first external point and the plane where the X-axis and the Y-axis are located is 400 mm to 460 mm.

8. A rear suspension system, characterized in that: The vehicle comprises a rear swing arm, an upper control rod, a toe rod and a lower control rod, wherein the rear swing arm extends along the X-axis of the vehicle, the upper control rod, the toe rod and the lower control rod extend along the Y-axis of the vehicle, and in the Z-axis direction of the vehicle, the toe rod is located between the upper control rod and the lower control rod; An angle E2 formed by an extension direction of a projection of the toe rod in a vertical plane perpendicular to the Y axis and the Z axis is 20° to 30°.

9. The rear suspension system according to claim 8, characterized in that An angle D2 formed by an extension direction of the projection of the toe rod in the horizontal plane and the Y-axis is 0° to 8°.

10. The rear suspension system according to claim 8 or 9, characterized in that: The X-axis, the Y-axis, and the Z-axis form a coordinate system, the origin of the coordinate system is located at the midpoint of a line connecting the wheel centers of the two rear wheels of the vehicle, and the end of the toe bar facing the inner side of the vehicle forms a second inner point; A distance A3 between the second inner point and the X-axis along the Y-axis is 30 mm to 50 mm; and / or, a distance B3 between the second inner point and the Y axis along the X-axis direction is 150 mm to 210 mm; And / or, a distance C3 between the second inner point and the plane where the X-axis and the Y-axis are located is 80 mm to 140 mm.

11. The rear suspension system according to claim 10, characterized in that The toe bar is configured to have an end portion facing the outer side of the vehicle forming a second outer point; A distance A4 between the second outer point and the X-axis along the Y-axis is 740 mm to 800 mm; and / or, a distance B4 between the second outer point and the Y axis along the X-axis direction is 100 mm to 140 mm; And / or, a distance C4 between the second external point and the plane where the X-axis and the Y-axis are located is -20 mm to 20 mm.

12. A rear suspension system, characterized in that: The vehicle comprises a rear swing arm, an upper control rod, a toe rod and a lower control rod, wherein the rear swing arm extends along the X-axis of the vehicle, the upper control rod, the toe rod and the lower control rod extend along the Y-axis of the vehicle, and in the Z-axis direction of the vehicle, the toe rod is located between the upper control rod and the lower control rod; An included angle E3 formed by an extension direction of a projection of the lower control rod in a vertical plane perpendicular to the Y axis and the Z axis is 35° to 45°.

13. The rear suspension system according to claim 12, wherein: An angle D3 formed by an extension direction of the projection of the lower control rod in the horizontal plane and the Y-axis is 4° to 12°.

14. The rear suspension system according to claim 12 or 13, characterized in that: The X-axis, the Y-axis, and the Z-axis form a coordinate system, the origin of the coordinate system is located at the midpoint of a line connecting the wheel centers of the two rear wheels of the vehicle, and the end of the lower control rod facing the inner side of the vehicle forms a third inner point; A distance A5 between the third inner point and the X-axis along the Y-axis is 80 mm to 100 mm; and / or, a distance B5 between the third inner point and the Y axis along the X-axis direction is 150 mm to 190 mm; And / or, a distance C5 between the third inner point and the plane where the X-axis and the Y-axis are located is -10 mm to 15 mm.

15. The rear suspension system according to claim 14, characterized in that The end of the lower control rod toward the outside of the vehicle forms a third outer point; A distance A6 between the third outer point and the X-axis along the Y-axis is 750 mm to 790 mm; and / or, a distance B6 between the third outer point and the Y axis along the X-axis direction is 50 mm to 70 mm; And / or, a distance C6 between the third external point and the plane where the X-axis and the Y-axis are located is 100 mm to 140 mm.

16. A vehicle, characterized in that: The rear suspension system comprises the one described in any one of claims 1 to 15.

17. The vehicle according to claim 16, characterized in that Also includes: A vehicle frame and a shock absorber, wherein the upper control rod, the front toe rod, the lower control rod, and the shock absorber are all connected between the vehicle frame and the rear swing arm; a balancing rod and a connecting rod, wherein the balancing rod is connected to the vehicle frame, and the connecting rod is connected between the balancing rod and the rear rocker arm; A rear wheel, wherein the rear swing arm is connected to the rear wheel.

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