Suspension system and all-terrain vehicle

Abstract

The utility model relates to a suspension system and an all-terrain vehicle. The suspension system comprises a vehicle frame, two rear suspension assemblies, a stabilizing rod and two linkage rods. The two rear suspension assemblies are symmetrically arranged on the left side and the right side of the frame, each rear suspension assembly comprises an upper rocker arm and a lower rocker arm, the upper rocker arms and the lower rocker arms are arranged at intervals in the vertical direction of the frame, the stabilizer bar comprises a transverse rod and two bent rods, the transverse rod is rotationally installed on the rear side of the frame, and the two bent rods are symmetrically arranged at the left end and the right end of the transverse rod. The bent rods are located above the upper rocker arm and arched upwards, the two linkage rods are connected with the two bent rods in a one-to-one correspondence mode, the upper ends of the linkage rods are hinged to the bent rods, and the lower ends of the linkage rods are hinged to the lower rocker arm. The rear suspension assembly of the suspension system is not prone to interference with the stabilizer bar, and the stabilizer bar is good in durability and long in service life.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a suspension system and an all-terrain vehicle. Background Technology

[0002] All-terrain vehicles, also known as all-terrain four-wheel off-road vehicles, are simple, practical, and have good off-road performance. In related technologies, considering the vehicle's off-road performance and passability, the suspension system of all-terrain vehicles typically adopts a combination of a double wishbone structure and a stabilizer bar. However, the unreasonable installation structure of the aforementioned wishbone and stabilizer bar leads to interference between the wishbone and stabilizer bar when the all-terrain vehicle is traveling on bumpy roads, and the stabilizer bar is prone to damage and has poor durability. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a suspension system in which the rear suspension components are less likely to interfere with the stabilizer bar, and the stabilizer bar has good durability and a long service life.

[0005] An embodiment of this utility model also proposes an all-terrain vehicle.

[0006] The suspension system of this utility model embodiment includes: a frame, two rear suspension assemblies, a stabilizer bar, and two linkage rods. The two rear suspension assemblies are symmetrically arranged on the left and right sides of the frame. Each rear suspension assembly includes an upper rocker arm and a lower rocker arm, which are spaced apart along the vertical direction of the frame. The stabilizer bar includes a crossbar and two bend bars. The crossbar is rotatably mounted on the rear side of the frame. The two bend bars are symmetrically arranged at the left and right ends of the crossbar. The bend bars are located above the upper rocker arm and arch upwards. The two linkage rods are connected to the two bend bars one-to-one. The upper end of the linkage rod is hinged to the bend bar, and the lower end of the linkage rod is hinged to the lower rocker arm.

[0007] According to the suspension system of this utility model, since the curved bar is located above the upper rocker arm and arches upwards, the arched curved bar can form a clearance space with the upper rocker arm. Therefore, the upper and lower rocker arms of the rear suspension assembly are less likely to interfere with the curved bar during vertical movement. Furthermore, compared to the "single horizontally arranged stabilizer bar" solution, the upwardly arched curved bar can extend the rotation radius of the stabilizer bar's end, thereby reducing the stabilizer bar's rotation angle and slowing down wear, thus improving its durability. Therefore, the suspension system of this utility model is less likely to interfere with the stabilizer bar, and the stabilizer bar has better durability and a longer service life.

[0008] In some embodiments, the height difference between the highest point of the upward arch of the bent rod and the bottom surface of the frame is H1, and the height difference between the upper rocker arm and the pivot axis of the frame and the bottom surface of the frame is H2, wherein H1 > H2.

[0009] In some embodiments, the height difference between the pivot axis of the crossbar and the bottom surface of the frame and the frame is H3, wherein H1 > H2 > H3.

[0010] In some embodiments, the pivot axis of the crossbar to the frame is P1, the pivot axis of the upper rocker arm to the frame is P2, and the pivot axis of the lower rocker arm to the frame is P3. In the height direction of the frame, the position of P2 is higher than the position of P3, and P1 is located between P2 and P3.

[0011] In some embodiments, the suspension system further includes an axle support and a drive shaft, the upper rocker arm and the lower rocker arm are rotatably connected to the axle support, one end of the drive shaft is connected to the axle support, and the other end of the drive shaft is used to connect to the gearbox. In the height direction of the vehicle frame, the drive shaft is located between the upper rocker arm and the lower rocker arm.

[0012] In some embodiments, the hinge point between the lower end of the linkage rod and the lower rocker arm is O1, and the pivot axis between the crossbar and the frame is P1. In the front-rear direction of the frame, O1 and P1 are located on both sides of the drive shaft, respectively.

[0013] In some embodiments, the suspension system further includes a shock absorber, the upper end of which is pivotally connected to the frame, and the lower end of which passes through the middle of the upper rocker arm and is pivotally connected to the lower rocker arm.

[0014] In some embodiments, the hinge point between the upper end of the linkage rod and the bent rod is O2, and in the front-rear direction of the vehicle frame, O2 and the shock absorber are located on both sides of the drive shaft, respectively.

[0015] In some embodiments, the upper rocker arm includes a first upper rocker arm and a second upper rocker arm, the first upper rocker arm and the second upper rocker arm being arranged at intervals along the front-rear direction of the vehicle frame and both being rotatably connected to the vehicle frame; the lower rocker arm includes a first lower rocker arm and a second lower rocker arm, the first lower rocker arm and the second lower rocker arm being arranged at intervals along the front-rear direction of the vehicle frame and both being rotatably connected to the vehicle frame.

[0016] Another embodiment of the all-terrain vehicle of the present invention includes the suspension system described in any one of the embodiments of the present invention.

[0017] According to the all-terrain vehicle of this utility model, since the curved bar is located above the upper rocker arm and arches upwards, the arched curved bar can form a clearance space with the upper rocker arm. Therefore, the upper and lower rocker arms of the rear suspension assembly are less likely to interfere with the curved bar when swinging up and down. Furthermore, compared to the "single horizontally arranged stabilizer bar" solution, the upwardly arched curved bar can extend the rotation radius of the stabilizer bar end, thereby reducing the stabilizer bar's rotation angle and slowing down wear, thus improving its durability. Therefore, the suspension system of the all-terrain vehicle of this utility model is less likely to interfere with the stabilizer bar, and the stabilizer bar has better durability and a longer service life. Attached Figure Description

[0018] Figure 1 This is a rear view of the suspension system according to an embodiment of the present invention.

[0019] Figure 2 This is a partial side view of the suspension system according to an embodiment of the present invention.

[0020] Figure 3 This is a partial top view of the suspension system according to an embodiment of the present invention.

[0021] Figure label:

[0022] 1. Frame;

[0023] 2. Rear suspension assembly; 21. Upper rocker arm; 211. First upper rocker arm; 212. Second upper rocker arm; 22. Lower rocker arm; 221. First lower rocker arm; 222. Second lower rocker arm;

[0024] 3. Stabilizer bar; 31. Crossbar; 32. Bend bar;

[0025] 4. Linkage rod;

[0026] 5. Wheel and axle support;

[0027] 6. Drive shaft;

[0028] 7. Shock absorbers. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] The following is a reference appendix. Figures 1 to 3 This invention describes a suspension system and an all-terrain vehicle according to embodiments of the present invention.

[0031] like Figures 1 to 3As shown, the suspension system of this utility model embodiment includes: a frame 1, two rear suspension assemblies 2, a stabilizer bar 3, and two linkage rods 4. The two rear suspension assemblies 2 are symmetrically arranged on the left and right sides of the frame 1. Each rear suspension assembly 2 includes an upper rocker arm 21 and a lower rocker arm 22. The upper rocker arm 21 and the lower rocker arm 22 are arranged at intervals along the vertical direction of the frame 1. The stabilizer bar 3 includes a crossbar 31 and two curved bars 32. The crossbar 31 is rotatably mounted on the rear side of the frame 1. The two curved bars 32 are symmetrically arranged at the left and right ends of the crossbar 31. The curved bars 32 are located above the upper rocker arm 21 and arch upward. The two linkage rods 4 are connected to the two curved bars 32 one-to-one. The upper end of the linkage rod 4 is hinged to the curved bar 32, and the lower end of the linkage rod 4 is hinged to the lower rocker arm 22.

[0032] Understandably, the crossbar 31 extends roughly left and right, and is rotatably connected to the rear side of the frame 1. The rear end of the bent rod 32 is connected to the crossbar 31, and the front end of the bent rod 32 is hinged to the upper end of the linkage rod 4. When the crossbar 31 rotates relative to the frame 1, the bent rod 32 can synchronously drive the linkage rod 4 to move up and down, thereby controlling the swing amplitude of the lower rocker arm 22.

[0033] It should be noted that, in the direction from back to front, the bent rod 32 first extends upward at an angle and then extends downward at an angle, thus the bent rod 32 can form an upward arched structure.

[0034] According to the embodiment of the present invention, since the curved rod 32 is located above the upper rocker arm 21 and arches upward, the arched curved rod 32 can form a clearance space with the upper rocker arm 21. When the upper rocker arm 21 and the lower rocker arm 22 of the rear suspension assembly 2 swing up and down, they are less likely to interfere with the curved rod 32. This also makes the structure of the suspension system compact and facilitates the arrangement of other components around the frame 1.

[0035] On the other hand, compared to the "single horizontally arranged stabilizer bar 3" design, the upwardly arched curved bar 32 of the suspension system in this embodiment of the present invention can extend the rotation radius of the stabilizer bar 3 end, thereby reducing the rotation angle of the stabilizer bar 3. This reduces wear on the stabilizer bar 3 and improves its durability. Therefore, the suspension system of this embodiment of the present invention is less prone to interference with the stabilizer bar 3, and the stabilizer bar 3 has better durability and a longer service life.

[0036] Furthermore, the upward-arched curved rod 32 can raise the ball pin hinge point between the linkage rod 4 and the curved rod 32, thereby extending the length of the linkage rod 4 and reducing the rotation angle (i.e., the rotation angle of the ball pin) at the hinge position between the linkage rod 4 and the curved rod 32, thus ensuring the reliability of the hinge between the linkage rod 4 and the curved rod 32 and extending the service life of the linkage rod 4.

[0037] Optionally, such as Figure 1 and Figure 2As shown, the height difference between the highest point K of the upward arch of the curved rod 32 and the bottom surface of the frame 1 is H1, and the height difference between the pivot axis P2 of the upper rocker arm 21 and the bottom surface of the frame 1 is H2, where H1 > H2. It can be understood that the highest point K of the upward arch of the curved rod 32 is higher than the pivot axis P2 of the upper rocker arm 21 and the frame 1. This further avoids interference between the upper rocker arm 21 and the curved rod 32 when swinging up and down, and at this time, the rotation angle of the stabilizer bar 3 is smaller, which is beneficial to improving the durability of the stabilizer bar 3.

[0038] Furthermore, such as Figure 1 and Figure 2 As shown, the height difference between the pivot axis P1 of the crossbar 31 and the bottom surface of the frame 1 is H3, where H1 > H2 > H3. It can be understood that the pivot axis P1 of the crossbar 31 and the frame 1 is lower than the pivot axis P2 of the upper rocker arm 21 and the frame 1. That is, the pivot axis P2 of the upper rocker arm 21 and the frame 1 is located between the highest point K of the upward arch of the curved bar 32 and the pivot axis P1 of the crossbar 31 and the frame 1. This allows for a more reasonable layout of the rear suspension assembly 2 and the stabilizer bar 3, which is beneficial to improving the stability of the suspension system.

[0039] In some embodiments, such as Figure 1 and Figure 2 As shown, the pivot axis between the crossbar 31 and the frame 1 is P1, the pivot axis between the upper rocker arm 21 and the frame 1 is P2, and the pivot axis between the lower rocker arm 22 and the frame 1 is P3. In the height direction of the frame 1, the position of P2 is higher than the position of P3, and P1 is located between P2 and P3. It can be understood that the pivot position between the crossbar 31 and the frame 1 is located between the pivot positions between the upper rocker arm 21 and the frame 1 and the lower rocker arm 22 and the frame 1. By adopting the above-described structural arrangement of the upper rocker arm 21, the lower rocker arm 22, and the stabilizer bar 3, the suspension system of this utility model can improve the compactness of the component arrangement of the suspension system and make the force on the upper rocker arm 21, the lower rocker arm 22, and the stabilizer bar 3 reasonable, thereby further improving the stability of the all-terrain vehicle.

[0040] Optionally, such as Figures 1 to 3 As shown, the suspension system also includes an axle support 5 and a drive shaft 6. The upper rocker arm 21 and lower rocker arm 22 are rotatably connected to the axle support 5. One end of the drive shaft 6 is connected to the axle support 5, and the other end is used to connect to the gearbox. In the height direction of the frame 1, the drive shaft 6 is located between the upper rocker arm 21 and the lower rocker arm 22. Therefore, the suspension system of this embodiment can utilize the space between the upper rocker arm 21 and the lower rocker arm 22 to arrange the drive shaft 6, facilitating the arrangement of components. Furthermore, during all-terrain vehicle operation, the drive shaft 6 is less likely to interfere with the upper rocker arm 21 and the lower rocker arm 22, which is beneficial for wheel trajectory control and improves the maneuverability of the all-terrain vehicle.

[0041] Optionally, such as Figure 2 As shown, the hinge point between the lower end of the linkage 4 and the lower rocker arm 22 is O1, and the pivot axis between the crossbar 31 and the frame 1 is P1. In the front-rear direction of the frame 1, O1 and P1 are located on both sides of the drive shaft 6. This allows for a more reasonable arrangement of the suspension system, which is beneficial to improving the stability of the suspension system.

[0042] In some embodiments, such as Figure 2 As shown, the suspension system also includes a shock absorber 7, the upper end of which is pivotally connected to the frame 1, and the lower end of which passes through the middle of the upper rocker arm 21 and is pivotally connected to the lower rocker arm 22. It is understood that because the lower end of the shock absorber 7 passes through the middle of the upper rocker arm 21, the length of the shock absorber 7 can be increased, and the compressible stroke of the shock absorber 7 can be lengthened, thereby increasing the vertical travel of the wheel and improving the ride comfort of the all-terrain vehicle.

[0043] Optionally, such as Figure 2 As shown, the hinge point between the upper end of the linkage 4 and the bent rod 32 is O2. In the front-rear direction of the frame 1, O2 and the shock absorber 7 are located on both sides of the drive shaft 6. This allows for a more reasonable and compact arrangement of the suspension system, and also helps to improve the shock absorption effect of the suspension system.

[0044] Specifically, such as Figure 2 and Figure 3 As shown, the upper rocker arm 21 includes a first upper rocker arm 211 and a second upper rocker arm 212. The first upper rocker arm 211 and the second upper rocker arm 212 are arranged at intervals along the front-rear direction of the frame 1 and are both rotatably connected to the frame 1. The lower rocker arm 22 includes a first lower rocker arm 221 and a second lower rocker arm 222. The first lower rocker arm 221 and the second lower rocker arm 222 are arranged at intervals along the front-rear direction of the frame 1 and are both rotatably connected to the frame 1. It can be understood that the upper rocker arm 21 and the lower rocker arm 22 are generally arranged in a rectangular frame structure, which can improve the structural strength of the upper rocker arm 21 and the lower rocker arm 22, extend the service life of the rear suspension assembly 2, and improve the stability of the all-terrain vehicle.

[0045] like Figures 1 to 3 As shown, another embodiment of the all-terrain vehicle of the present invention includes the suspension system of the present invention.

[0046] According to the all-terrain vehicle of this embodiment, since the curved bar 32 is located above the upper rocker arm 21 and arches upwards, the arched curved bar 32 can form a clearance space with the upper rocker arm 21. Therefore, the upper rocker arm 21 and lower rocker arm 22 of the rear suspension assembly 2 are less likely to interfere with the curved bar 32 when swinging up and down. Furthermore, compared to the "single horizontally arranged stabilizer bar 3" solution, the upwardly arched curved bar 32 can extend the rotation radius of the stabilizer bar 3 end, thereby reducing the rotation angle of the stabilizer bar 3. This reduces wear on the stabilizer bar 3 and improves its durability. Therefore, the suspension system of the all-terrain vehicle of this embodiment is less likely to interfere with the stabilizer bar 3, and the stabilizer bar 3 has good durability and a long service life.

[0047] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A suspension system, characterized in that, include: Frame; Two rear suspension assemblies are symmetrically arranged on the left and right sides of the vehicle frame. Each rear suspension assembly includes an upper rocker arm and a lower rocker arm, which are spaced apart along the vertical direction of the vehicle frame. The vehicle includes a stabilizer bar and two linkage rods. The stabilizer bar comprises a crossbar and two bend rods. The crossbar is rotatably mounted on the rear side of the frame. The two bend rods are symmetrically arranged at the left and right ends of the crossbar. The bend rods are located above the upper rocker arm and arch upwards. The two linkage rods are connected to the two bend rods one-to-one. The upper end of the linkage rod is hinged to the bend rod, and the lower end of the linkage rod is hinged to the lower rocker arm.

2. The suspension system according to claim 1, characterized in that, The height difference between the highest point of the upward arch of the curved rod and the bottom surface of the frame is H1, and the height difference between the upper rocker arm and the pivot axis of the frame and the bottom surface of the frame is H2, wherein H1 > H2.

3. The suspension system according to claim 2, characterized in that, The height difference between the pivot axis of the crossbar and the bottom surface of the frame and the bottom surface of the frame is H3, where H1 > H2 > H3.

4. The suspension system according to claim 1, characterized in that, The pivot axis of the crossbar to the frame is P1, the pivot axis of the upper rocker arm to the frame is P2, and the pivot axis of the lower rocker arm to the frame is P3. In the height direction of the frame, the position of P2 is higher than the position of P3, and P1 is located between P2 and P3.

5. The suspension system according to claim 1, characterized in that, The suspension system also includes an axle support and a drive shaft. The upper rocker arm and the lower rocker arm are rotatably connected to the axle support. One end of the drive shaft is connected to the axle support, and the other end of the drive shaft is used to connect to the gearbox. In the height direction of the frame, the drive shaft is located between the upper rocker arm and the lower rocker arm.

6. The suspension system according to claim 5, characterized in that, The lower end of the linkage rod is hinged to the lower rocker arm at point O1, and the pivot axis of the crossbar and the frame is P1. In the front-rear direction of the frame, O1 and P1 are located on both sides of the drive shaft.

7. The suspension system according to claim 5, characterized in that, The suspension system also includes a shock absorber, the upper end of which is pivotally connected to the frame, and the lower end of which passes through the middle of the upper rocker arm and is pivotally connected to the lower rocker arm.

8. The suspension system according to claim 7, characterized in that, The hinge point between the upper end of the linkage rod and the bent rod is O2. In the front-rear direction of the vehicle frame, O2 and the shock absorber are located on both sides of the drive shaft, respectively.

9. The suspension system according to any one of claims 1-8, characterized in that, The upper rocker arm includes a first upper rocker arm and a second upper rocker arm, which are arranged at intervals along the front-rear direction of the vehicle frame and are rotatably connected to the vehicle frame. The lower rocker arm includes a first lower rocker arm and a second lower rocker arm, which are arranged at intervals along the front-rear direction of the vehicle frame and are rotatably connected to the vehicle frame.

10. An all-terrain vehicle, characterized in that, The suspension system included in any one of claims 1-9.

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