All-terrain vehicle

Abstract

The utility model provides an all-terrain vehicle which is characterized in that a first plane is a longitudinal central plane of a vehicle frame, a left front shock absorber and a right front shock absorber are symmetrical about the first plane, and a left rear shock absorber and a right rear shock absorber are symmetrical about the first plane; the left front shock absorber comprises a first mounting part connected with the front sub-frame, the left rear shock absorber comprises a second mounting part connected with the rear sub-frame, the distance between a reference point A of the first mounting part and a reference point B of the second mounting part in the front-back direction is L1, and a second plane passes through the reference point A and the reference point B and extends in the up-down direction; the engine comprises at least two third mounting parts which are flexibly connected with the main frame, and the at least two third mounting parts comprise a front third mounting part which has the smallest distance from the second plane in the front-back direction and a rear third mounting part which has the largest distance from the second plane in the front-back direction; the distance between the reference point C of the front third mounting part and the reference point D of the rear third mounting part in the front-back direction is L2; and 0.12 < = L2 / L1 < = 0.48.

Description

Technical Field

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

[0002] All-terrain vehicles are often used for field transportation, field rescue, field exploration, field construction and other purposes. The field terrain is complex, such as beaches, riverbeds, forest roads, streams, and harsh desert terrain. Therefore, the vehicle vibrates greatly and the driving comfort is low.

[0003] The vibration of the vehicle mainly comes from the vibration of the engine and the impact of the road surface transmitted to the vehicle body through the shock absorber. The subjective feeling of the vibration of the vehicle comes from the seat cushion, steering wheel and pedals. Therefore, it is very important to optimize the design so that the all-terrain vehicle has better shock absorption performance and improve driving comfort. Utility Model Content

[0004] In order to solve the above problems, an embodiment of the present application provides an all-terrain vehicle to at least partially solve the above problems.

[0005] The all-terrain vehicle provided by the present application includes a frame, a left front shock absorber, a right front shock absorber, a left rear shock absorber, a right rear shock absorber, a front suspension system, a rear suspension system and an engine, wherein the frame includes a main frame, a front sub-frame and a rear sub-frame, wherein the front sub-frame and the rear sub-frame are respectively mounted at the front end and the rear end of the main frame; the longitudinal center plane is a virtual plane extending in the up-down direction and coinciding with the left and right center lines of the frame; the left front shock absorber and the right front shock absorber are symmetrical about the longitudinal center plane, and are both connected between the front sub-frame and the front suspension system; the left rear shock absorber and the right rear shock absorber are symmetrical about the longitudinal center plane, and are both connected between the rear sub-frame and the rear suspension system; the left front shock absorber includes a first mounting portion connected to the front sub-frame, and the left rear shock absorber includes a first mounting portion connected to the The second mounting part connected to the rear sub-frame, the distance between the reference point A of the first mounting part and the reference point B of the second mounting part in the front-to-back direction is L1, and the front side plane is a virtual plane passing through the reference point A, extending in the up-down direction and perpendicular to the longitudinal center plane; the engine includes at least two third mounting parts, the third mounting parts are flexibly connected to the main frame and surrounded by the rear sub-frame, the at least two third mounting parts include a front third mounting part with the smallest distance from the front side plane in the front-to-back direction, and a rear third mounting part with the largest distance from the front side plane in the front-to-back direction, the distance between the reference point C of the front third mounting part and the reference point D of the rear third mounting part in the front-to-back direction is L2; ​​0.12≤L2 / L1≤0.48.

[0006] Optionally, the all-terrain vehicle includes a flexible connector connected between the third mounting portion and the frame.

[0007] Optionally, the all-terrain vehicle also includes a first bolt and a first nut, the flexible connector includes a first elastic body, a first connector and a second connector, the first connector and the second connector are respectively connected to opposite sides of the first elastic body, the third mounting portion of the engine includes a first connecting through hole, the two flexible connectors are respectively located at opposite ends of the first connecting through hole, the first bolt passes through the first connector of one flexible connector, the first connecting through hole and the first connector of another flexible connector in sequence and then is connected to the first nut, and the second connectors of the two flexible connectors are respectively connected to the frame.

[0008] Optionally, the all-terrain vehicle also includes a second bolt and a second nut, the third mounting portion of the engine includes a second connecting through hole, the frame includes a third connecting through hole, the flexible connector includes a supporting cylinder and a second elastic body, the second elastic body is sleeved outside the supporting cylinder, the flexible connector passes through the second connecting through hole and the third connecting through hole, the second elastic body is located in the second connecting through hole and the third connecting through hole, and the second bolt passes through the inner hole of the supporting cylinder and is connected to the second nut.

[0009] Optionally, the all-terrain vehicle also includes a third bolt and a third nut, the flexible connector includes a base plate and a third elastic body connected to each other, the third elastic body includes a fourth connecting through hole, the third bolt passes through the frame and the fourth connecting through hole and is connected to the third nut, and the base plate and the third mounting part of the engine are detachably connected.

[0010] Optionally, the front suspension system also includes a left front rocker arm assembly, a right front rocker arm assembly, a left steering knuckle, a right steering knuckle and a front stabilizer bar, the left steering knuckle is connected to the left front wheel of the all-terrain vehicle, and the right steering knuckle is connected to the right front wheel of the all-terrain vehicle; the inner end of the left front rocker arm assembly is pivotally connected to the front sub-frame, and the outer end is rotationally connected to the left steering knuckle, the inner end of the right front rocker arm assembly is pivotally connected to the front sub-frame, and the outer end is rotationally connected to the right steering knuckle; the front stabilizer bar is C-shaped with the C-shaped opening facing forward, the front stabilizer bar is located in front of the front sub-frame, the middle part of the front stabilizer bar is rotationally connected to the front sub-frame, and the left and right ends of the front stabilizer bar are respectively connected to the left front rocker arm assembly and the right front rocker arm assembly.

[0011] Optionally, the left front rocker arm assembly includes a left front upper rocker arm and a left front lower rocker arm, and the right front rocker arm assembly includes a right front upper rocker arm and a right front lower rocker arm; the upper end of the left front shock absorber is connected to the front sub-frame, and the lower end is connected to the left front upper rocker arm; the upper end of the right front shock absorber is connected to the front sub-frame, and the lower end is connected to the right front upper rocker arm.

[0012] Optionally, the rear suspension system includes a rear stabilizer bar, a left rear swing arm, a right rear swing arm, a left rear wheel mounting seat and a right rear wheel mounting seat, the left rear wheel mounting seat being connected to the left rear wheel of the all-terrain vehicle, and the right rear wheel mounting seat being connected to the right rear wheel of the all-terrain vehicle; the front end of the left rear swing arm is pivotally connected to the main frame of the frame, and the rear end is connected to the left rear wheel mounting seat, the front end of the right rear swing arm is pivotally connected to the main frame of the frame, and the rear end is connected to the right rear wheel mounting seat; the middle part of the rear stabilizer bar is rotatably connected to the rear sub-frame, and the left and right ends of the rear stabilizer bar are respectively connected to the left rear swing arm and the right rear swing arm.

[0013] Optionally, the rear suspension system also includes a left rear tie rod and a right rear tie rod, wherein both ends of the left rear tie rod are rotationally connected to the main frame and the rear end of the left rear swing arm, respectively, and both ends of the right rear tie rod are rotationally connected to the main frame and the rear end of the right rear swing arm, respectively.

[0014] Optionally, the engine is located in a virtual space defined by an outer contour of the rear sub-frame, and the rear stabilizer bar includes a rear connecting portion rotatably connected to the rear sub-frame, and the rear connecting portion is located in front of the engine.

[0015] Based on the above-mentioned all-terrain vehicle provided by the present application, the vibration transmitted by the wheel through the suspension assembly can be buffered by setting a shock absorber to achieve the purpose of shock absorption; the engine and the frame are flexibly connected to reduce the vibration transmitted by the engine to the frame to achieve the effect of shock absorption, thereby reducing the adverse effects caused by engine vibration and road bumps. Among them, by limiting the ratio relationship between L1 and L2, the distance L2 between the front and rear connection points between the engine and the main frame can be set based on the distance L1 between the front and rear shock absorbers, reducing the probability that L2 is too large and is not conducive to shock absorption, thereby facilitating the shock absorption of the all-terrain vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings are intended only to illustrate and explain the present application, and do not limit the scope of the present application.

[0017] Figure 1 It is a partial structural front view of an all-terrain vehicle provided by an exemplary embodiment of the present application.

[0018] Figure 2 1 is a top view of an all-terrain vehicle provided by an exemplary embodiment of the present application, wherein a partial structure is shown.

[0019] Figure 3 It is a schematic diagram of a connection method between an engine and a frame in an all-terrain vehicle provided by an exemplary embodiment of the present application.

[0020] Figure 4 It is a schematic diagram of another connection method between an engine and a frame in an all-terrain vehicle provided by an exemplary embodiment of the present application.

[0021] Figure 5 It is a schematic diagram of yet another connection method between an engine and a frame in an all-terrain vehicle provided by an exemplary embodiment of the present application.

[0022] Figure 6 It is a partial structural front view of an all-terrain vehicle provided by an exemplary embodiment of the present application.

[0023] Figure 7 It is a partial structural front view of an all-terrain vehicle provided by an exemplary embodiment of the present application.

[0024] Figure 8 yes Figure 6 Enlarged view of part F.

[0025] Fig. 9 It is a partial structural rear view of an all-terrain vehicle provided by an exemplary embodiment of the present application.

[0026] Fig.10 It is a schematic three-dimensional diagram of a partial structure of an all-terrain vehicle provided by an exemplary embodiment of the present application.

[0027] Fig.11 It is a bottom view of a partial structure of an all-terrain vehicle provided by an exemplary embodiment of the present application.

[0028] Reference numerals:

[0029] P1-longitudinal center plane, P2-frontal plane;

[0030] 10-frame, 11-front sub-frame, 12-rear sub-frame, 13-main frame;

[0031] 21-left front shock absorber, 22-right front shock absorber, 23-left rear shock absorber, 24-right rear shock absorber, 25-engine;

[0032] 311-first elastic body, 312-first connecting body, 313-second connecting body,

[0033] 321-support cylinder, 322-second elastic body, 331-base plate, 332-third elastic body,

[0034] 411 - first bolt, 412 - first nut, 421 - second bolt, 422 - second nut, 431 - third bolt;

[0035] 55-front stabilizer bar, 56-rear stabilizer bar;

[0036] 51-left front rocker arm assembly, 511-left front upper rocker arm, 512-left front lower rocker arm,

[0037] 52-right front rocker arm assembly, 521-right front upper rocker arm, 522-right front lower rocker arm,

[0038] 531-left steering knuckle, 532-right steering knuckle;

[0039] 541-left front ball pin assembly, 542-right front ball pin assembly;

[0040] 61-front connection structure, 611-front buffer, 612-front mounting seat, 62-rear connection structure,

[0041] 71-left rear swing arm, 711-first component, 712-second component, 72-right rear swing arm,

[0042] 731-left rear wheel mounting seat, 732-right rear wheel mounting seat,

[0043] 741-left rear tie rod, 742-right rear tie rod, 751-left rear control rod, 752-right rear control rod; 761-right rear ball pin assembly. DETAILED DESCRIPTION

[0044] In order to have a clearer understanding of the technical features, purposes and effects of the embodiments of the present application, the specific implementation methods of the embodiments of the present application are now described with reference to the accompanying drawings.

[0045] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.

[0046] In order to simplify the drawings, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one or more of the parts with the same structure or function are schematically drawn or only one or more of them are marked.

[0047] refer to Figure 1 and Figure 2The present application provides an all-terrain vehicle, comprising a frame 10, a left front shock absorber 21, a right front shock absorber 22, a left rear shock absorber 23, a right rear shock absorber 24, a front suspension system, a rear suspension system and an engine 25, wherein the frame 10 comprises a main frame 13, a front sub-frame 11 and a rear sub-frame 12, wherein the front sub-frame 11 and the rear sub-frame 12 are respectively mounted at the front end and the rear end of the main frame 13;

[0048] The longitudinal center plane P1 is a virtual plane extending in the up-down direction and coinciding with the left-right center line of the vehicle frame 10. The left front shock absorber 21 and the right front shock absorber 22 are symmetrical about the longitudinal center plane P1 and are both connected between the front sub-frame 11 and the front suspension system; the left rear shock absorber 23 and the right rear shock absorber 24 are symmetrical about the longitudinal center plane P1 and are both connected between the rear sub-frame 12 and the rear suspension system.

[0049] The left front shock absorber 21 includes a first mounting portion connected to the front sub-frame 11, and the left rear shock absorber 23 includes a second mounting portion connected to the rear sub-frame 12, the distance between the reference point A of the first mounting portion and the reference point B of the second mounting portion in the front-to-back direction is L1, and the front plane P2 is a virtual plane passing through the reference point A, extending in the up-down direction and perpendicular to the longitudinal center plane P1;

[0050] The engine 25 includes at least two third mounting parts, which are flexibly connected to the main frame 13 and surrounded by the rear sub-frame 12. The at least two third mounting parts include a front third mounting part having the smallest distance from the front side plane P2 in the front-to-back direction, and a rear third mounting part having the largest distance from the front side plane P2 in the front-to-back direction. The distance between the reference point C of the front third mounting part and the reference point D of the rear third mounting part in the front-to-back direction is L2; ​​0.12≤L2 / L1≤0.48.

[0051] It can be seen from the above technical solutions that the vibration transmitted by the wheel through the suspension assembly can be buffered by setting the shock absorber to achieve the purpose of shock absorption; the engine 25 is flexibly connected to the frame 10 to reduce the vibration transmitted by the engine 25 to the frame 10, thereby achieving the effect of shock absorption, thereby reducing the adverse effects caused by the vibration of the engine 25 and the bumps on the road. Among them, by defining the ratio relationship between L1 and L2, the distance L2 between the front and rear connection points between the engine 25 and the main frame 13 can be set based on the distance L1 between the front and rear shock absorbers, thereby reducing the probability that the L2 size is too large and is not conducive to shock absorption, thereby facilitating the shock absorption of the all-terrain vehicle.

[0052] It should be clarified that the "up and down" defined in this application are up and down in the direction of gravity, and the "front and rear" are defined based on the front and rear of the all-terrain vehicle, with the front in front and the rear in the rear, and the horizontal plane is perpendicular to the up and down directions. The "left and right" defined in this application are defined based on the left and right sides of the driver when the driver is driving the vehicle. The longitudinal center plane P1 is perpendicular to the front plane P2. The "reference points" in this application can be set according to uniform preset conditions. For example, reference point A can be the geometric center of the first mounting part, reference point B can be the geometric center of the second mounting part, and reference point C can be the geometric center of the third mounting part. This application does not limit the preset conditions, and those skilled in the art can take points on the mounting part as reference points according to actual conditions.

[0053] In a possible implementation, the all-terrain vehicle includes a flexible connector, which is connected between the third mounting portion and the frame 10. Through this technical solution, the engine 25 can be suspended on the frame 10 by using the flexible connector, thereby reducing the vibration of the engine 25 transmitted to the frame 10 and reducing the adverse effects of the vibration of the engine 25 on the driver and passengers.

[0054] refer to Figure 3 In one example, the all-terrain vehicle further includes a first bolt 411 and a first nut 412, the flexible connector includes a first elastic body 311, a first connector 312 and a second connector 313, the first connector 312 and the second connector 313 are respectively connected to opposite sides of the first elastic body 311, the third mounting portion of the engine 25 includes a first connecting through hole, two flexible connectors are respectively located at opposite ends of the first connecting through hole, the first bolt 411 passes through the first connector 312 of one flexible connector, the first connecting through hole and the first connector 312 of another flexible connector in sequence and is connected to the first nut 412, and the second connectors 313 of the two flexible connectors are respectively connected to the frame 10. In this way, each third mounting portion of the engine 25 is suspended and connected to the frame 10 through two flexible connectors, thereby reducing the adverse effects of the vibration of the engine 25 on the driver and passengers. In addition, the second connector 313 can be detachably connected to the frame 10 through bolts and nuts that cooperate with each other.

[0055] refer to Figure 4In another example, the all-terrain vehicle further includes a second bolt 421 and a second nut 422, the third mounting portion of the engine 25 includes a second connection through hole, the frame 10 includes a third connection through hole, the flexible connector includes a support cylinder 321 and a second elastic body 322, the second elastic body 322 is sleeved outside the support cylinder 321, the flexible connector passes through the second connection through hole and the third connection through hole, the second elastic body 322 is located in the second connection through hole and the third connection through hole, and the second bolt 421 passes through the inner hole of the support cylinder 321 and is connected to the second nut 422. In this way, the second elastic body 322 can play the role of elastic buffer between the engine 25 and the frame 10, thereby reducing the adverse effects of the vibration of the engine 25 on the driver and passengers. In addition, in an example, the frame 10 may include a frame and a U-shaped card, and after the U-shaped card is detachably connected to the surface of the frame, a third connection through hole can be formed between the groove of the U-shaped card and the surface of the frame. In this way, the flexible connector can first pass through the second connection through hole, and then the U-shaped card can be detachably fastened and connected to the surface of the frame, thereby forming a third through hole surrounding the flexible connector. At this time, the flexible connector passes through the second connection through hole and the third connection through hole. The U-shaped card makes it easier to disassemble and install the flexible connection.

[0056] refer to Figure 5 In one example, the all-terrain vehicle further includes a third bolt 431 and a third nut, the flexible connector includes a base plate 331 and a third elastic body 332 connected to each other, the third elastic body 332 includes a fourth connecting through hole, the third bolt 431 passes through the frame 10 and the fourth connecting through hole and is connected to the third nut, and the base plate 331 and the third mounting portion of the engine 25 are detachably connected. In this way, the connection between the engine 25 and the frame 10 is achieved through the third elastic body 332, and the third elastic body 332 can play the role of elastic buffer between the engine 25 and the frame 10, thereby reducing the adverse effects of the vibration of the engine 25 on the driver and passengers. In addition, the opposite sides of the base plate 331 can be detachably connected to the engine 25 through the fourth bolt, and of course the fourth nut is used in conjunction with the fourth bolt.

[0057] refer to Figure 6 and Figure 7The front suspension system also includes a left front rocker arm assembly 51, a right front rocker arm assembly 52, a left steering knuckle 531, a right steering knuckle 532 and a front stabilizer bar 55. The left steering knuckle 531 is connected to the left front wheel of the all-terrain vehicle, and the right steering knuckle 532 is connected to the right front wheel of the all-terrain vehicle; the inner end of the left front rocker arm assembly 51 is pivotally connected to the front sub-frame 11, and the outer end is rotationally connected to the left steering knuckle 531; the inner end of the right front rocker arm assembly 52 is pivotally connected to the front sub-frame 11, and the outer end is rotationally connected to the right steering knuckle 532; the front stabilizer bar 55 is C-shaped and the C-shaped opening faces forward. The front stabilizer bar 55 is located in front of the front sub-frame 11, and the middle part thereof is rotationally connected to the front sub-frame 11. The left and right ends of the front stabilizer bar 55 are respectively connected to the left front rocker arm assembly 51 and the right front rocker arm assembly 52. Through the above technical solution, the left front rocker arm assembly 51 can be used to transmit various forces acting on the left front wheel to the frame 10, while ensuring that the left front wheel can jump up and down and turn relative to the frame 10 within a limited range; similarly, the right front rocker arm assembly 52 can be used to transmit various forces acting on the right front wheel to the vehicle body, while ensuring that the right front wheel can jump up and down and turn relative to the frame 10 within a limited range, and the C-shaped front stabilizer bar 55 connected to the two rocker arm assemblies can improve the vehicle's anti-roll capability.

[0058] refer to Figure 7 In a possible implementation, the left front rocker arm assembly 51 includes a left front upper rocker arm 511 and a left front lower rocker arm 512, and the right front rocker arm assembly 52 includes a right front upper rocker arm 521 and a right front lower rocker arm 522. The upper end of the left front shock absorber 21 is connected to the front sub-frame 11, and the lower end is connected to the left front upper rocker arm 511, so as to play a buffering and shock absorbing role between the left front wheel and the frame 10; similarly, the upper end of the right front shock absorber 22 is connected to the front sub-frame 11, and the lower end is connected to the right front upper rocker arm 521, so as to play a buffering and shock absorbing role between the right front wheel and the frame 10.

[0059] In one example, reference Figure 7 The upper end of the left steering knuckle 531 is rotationally connected to the left front upper rocker arm 511 through a ball stud, and the lower end is rotationally connected to the left front lower rocker arm 512 through a ball stud; the upper end of the right steering knuckle 532 is rotationally connected to the right front upper rocker arm 521 through a ball stud, and the lower end is rotationally connected to the right front lower rocker arm 522 through a ball stud. In this way, the left steering knuckle 531 can drive the left front wheel to turn under the driving of the steering system of the all-terrain vehicle, and at the same time, under the restriction of the left front rocker arm assembly 51, the left front wheel can rotate within the limit range relative to the left front rocker arm assembly 51; similarly, the right steering knuckle 532 can drive the right front wheel to turn under the driving of the steering system of the all-terrain vehicle, and at the same time, under the restriction of the right front rocker arm assembly 52, the right front wheel can rotate within the limit range relative to the left front rocker arm assembly 51.

[0060] In one example, reference Figure 7 The all-terrain vehicle further includes a left front ball pin assembly 541 and a right front ball pin assembly 542. One end of the left front ball pin assembly 541 is connected to the front stabilizer bar 55, and the other end is connected to the left front upper rocker arm 511. One end of the right front ball pin assembly 542 is connected to the front stabilizer bar 55, and the other end is connected to the right front upper rocker arm 521. Thus, by providing the left front ball pin assembly 541, a rotational connection between the front stabilizer bar 55 and the left front rocker arm assembly 51 is realized; by providing the right front ball pin assembly 542, a rotational connection between the front stabilizer bar 55 and the right front rocker arm assembly 52 is realized. The ball pin assembly is a common component in the art, so its specific structure is not described in detail.

[0061] refer to Figure 6 and Figure 8 The all-terrain vehicle includes two front connection structures 61 spaced apart in the left-right direction, the front stabilizer bar 55 is rotatably connected to the front sub-frame 11 through the front connection structures 61, and the front connection structure 61 includes a front buffer 611, which is sleeved on the front stabilizer bar 55. Through this technical solution, the front buffer 611 is connected between the front stabilizer bar 55 and the front sub-frame 11, so that the front stabilizer bar 55 can be stably rotatably connected to the front sub-frame 11 through the two front connection structures 61, and the front buffer 611 can play a buffering and shock-absorbing role at the rotation connection between the front stabilizer bar 55 and the front sub-frame 11, and reduce noise.

[0062] In one example, reference Figure 8 The front connection structure 61 may include a front mounting seat 612, which is mounted on the front sub-frame 11 and has a through hole. The front buffer 611 may be a rubber sleeve that can be sleeved on the outside of the front stabilizer bar 55. The rubber sleeve can be sleeved on the outside of the front stabilizer bar 55 in direct contact and penetrate the through hole of the front mounting seat 612. In this way, the front stabilizer bar 55 and the front mounting seat 612 are rotatably connected, and the rubber sleeve that can play a buffering role is located between the front stabilizer bar 55 and the front mounting seat 612 to play a shock absorbing role.

[0063] refer to Figure 6 and Fig. 9The rear suspension system includes a rear stabilizer bar 56, a left rear swing arm 71, a right rear swing arm 72, a left rear wheel mounting seat 731 and a right rear wheel mounting seat 732. The left rear wheel mounting seat 731 is connected to the left rear wheel of the all-terrain vehicle, and the right rear wheel mounting seat 732 is connected to the right rear wheel of the all-terrain vehicle; the front end of the left rear swing arm 71 is pivotally connected to the main frame 13 of the frame 10, and the rear end is connected to the left rear wheel mounting seat 731; the front end of the right rear swing arm 72 is pivotally connected to the main frame 13 of the frame 10, and the rear end is connected to the right rear wheel mounting seat 732; the middle part of the rear stabilizer bar 56 is rotatably connected to the rear sub-frame 12, and the left and right ends of the rear stabilizer bar 56 are respectively connected to the left rear swing arm 71 and the right rear swing arm 72. Through the above technical solution, the left rear swing arm 71 can be used to transmit various forces acting on the left front wheel to the frame 10, while ensuring that the left rear wheel can jump up and down and turn relative to the frame 10 within a limited range; similarly, the right rear swing arm 72 can be used to transmit various forces acting on the right rear wheel to the frame 10, while ensuring that the right rear wheel can jump up and down and turn relative to the frame 10 within a limited range, and the rear stabilizer bar 56 connected to the two swing arms can improve the vehicle's anti-roll capability.

[0064] For further reference, Figures 9 to 11 The rear suspension system further includes a left rear tie rod 741 and a right rear tie rod 742. The two ends of the left rear tie rod 741 are respectively rotatably connected to the main frame 13 and the rear end of the left rear swing arm 71, and the two ends of the right rear tie rod 742 are respectively rotatably connected to the main frame 13 and the rear end of the right rear swing arm 72. Through this technical solution, the left rear tie rod 741, the left rear swing arm 71 and the main frame 13 are connected to each other to form a triangular structure with good stability, so that the left rear wheel can be more stably restricted to move within a limited range; similarly, the right rear tie rod 742, the right rear swing arm 72 and the main frame 13 are connected to each other to form a triangular structure with good stability, so that the right rear wheel can be more stably restricted to move within a limited range.

[0065] There may be two left rear tie rods 741, which are spaced apart in the up-down direction. There may be two right rear tie rods 742, which are spaced apart in the up-down direction.

[0066] In one example, reference Figures 9 to 11The rear suspension system may further include a left rear control rod 751 and a right rear control rod 752. The two ends of the left rear control rod 751 are rotatably connected to the main frame 13 and the left rear wheel mounting seat 731, respectively. The two ends of the right rear control rod 752 are rotatably connected to the main frame 13 and the right rear wheel mounting seat 732, respectively. In this way, the toe angle of the left rear wheel can be controlled by the left rear control rod 751, and the toe angle of the right rear wheel can be controlled by the right rear control rod 752. In the up-down direction, the left rear control rod 751 may be located between the two left rear tie rods 741, and the right rear control rod 752 may be located between the two right rear tie rods 742.

[0067] In one example, the rear stabilizer bar 56 is C-shaped, and the C-shaped opening of the rear stabilizer bar 56 faces rearward.

[0068] The engine 25 is located in a virtual space defined by the outer contour of the rear sub-frame 12, and the rear stabilizer bar 56 includes a rear connection portion rotatably connected to the rear sub-frame 12, and the rear connection portion is located in front of the engine 25. In this way, the size of the frame 10 in the front-to-back direction can be saved, making the structure of the all-terrain vehicle compact and stable.

[0069] In one example, reference Fig. 9 and Fig.10 The upper end of the left rear shock absorber 23 is connected to the rear sub-frame 12, and the lower end is connected to the left rear swing arm 71, so as to play a role of buffering and shock absorption between the left rear wheel and the frame 10; similarly, the upper end of the right rear shock absorber 24 is connected to the rear sub-frame 12, and the lower end is connected to the right rear swing arm 72, so as to play a role of buffering and shock absorption between the right rear wheel and the frame 10.

[0070] In one example, reference Figure 6 and Fig.10 The all-terrain vehicle further includes a left rear ball pin assembly and a right rear ball pin assembly 761, one end of the left rear ball pin assembly is rotatably connected to the rear stabilizer bar 56, and the other end is rotatably connected to the left rear swing arm 71, and one end of the right rear ball pin assembly 761 is rotatably connected to the rear stabilizer bar 56, and the other end is rotatably connected to the right rear swing arm 72. In this way, by setting the left rear ball pin assembly, the rotational connection between the rear stabilizer bar 56 and the left rear swing arm 71 is realized; by setting the right rear ball pin assembly 761, the rotational connection between the rear stabilizer bar 56 and the right rear swing arm 72 is realized. The ball pin assembly is a commonly used component in the art, so its specific structure is not repeated.

[0071] In one example, reference Figure 6The left rear swing arm 71 includes a first component 711 and a second component 712. The first component 711 is located in front of the second component 712. The first component 711 is connected to the frame 10 through the left rear pin assembly, and the second component 712 is connected to the lower end of the left rear shock absorber 23. The structures of the left rear swing arm 71 and the right rear swing arm 72 can be the same.

[0072] In addition, the all-terrain vehicle may further include two rear connection structures 62 spaced apart in the left-right direction, the rear stabilizer bar 56 is rotatably connected to the main frame 13 via the rear connection structures 62, and the rear connection structure 62 includes a rear buffer, which is sleeved on the rear stabilizer bar 56. Through this technical solution, the rear stabilizer bar 56 can be stably rotatably connected to the main frame 13 through the two rear connection structures 62, and the rear buffer can play a buffering and shock-absorbing role at the rotational connection between the rear wheel and the main frame 13, and reduce noise.

[0073] In one example, the rear connection structure 62 may include a rear mounting seat, which is mounted on the main frame 13 and has a through hole. The rear buffer may be a rubber sleeve that can be sleeved on the rear stabilizer bar 56. The rubber sleeve can be sleeved on the rear stabilizer bar 56 in direct contact and penetrate the through hole of the rear mounting seat. In this way, the rear stabilizer bar 56 and the rear mounting seat are rotatably connected, and the rubber sleeve that can play a buffering role is located between the rear stabilizer bar 56 and the rear mounting seat to play a shock absorbing role.

[0074] In one example, the front connection structure 61 and the rear connection structure 62 are identical.

[0075] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0076] It should be noted that although the specific embodiments of the present application are described in detail in conjunction with the accompanying drawings, this should not be construed as limiting the scope of protection of the present application. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of the present application.

[0077] The examples of the embodiments of the present application are intended to concisely illustrate the technical features of the embodiments of the present application so that those skilled in the art can intuitively understand the technical features of the embodiments of the present application, and are not intended to be improper limitations of the embodiments of the present application.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An all-terrain vehicle, characterized in that: The vehicle comprises a frame (10), a left front shock absorber (21), a right front shock absorber (22), a left rear shock absorber (23), a right rear shock absorber (24), a front suspension system, a rear suspension system and an engine (25); the frame (10) comprises a main frame (13), a front sub-frame (11) and a rear sub-frame (12); the front sub-frame (11) and the rear sub-frame (12) are respectively mounted on the front end and the rear end of the main frame (13); The longitudinal center plane (P1) is a virtual plane extending in the up-down direction and coinciding with the left-right center line of the vehicle frame (10); the left front shock absorber (21) and the right front shock absorber (22) are symmetrical about the longitudinal center plane (P1) and are both connected between the front sub-frame (11) and the front suspension system; the left rear shock absorber (23) and the right rear shock absorber (24) are symmetrical about the longitudinal center plane (P1) and are both connected between the rear sub-frame (12) and the rear suspension system; The left front shock absorber (21) includes a first mounting portion connected to the front sub-frame (11), and the left rear shock absorber (23) includes a second mounting portion connected to the rear sub-frame (12), a distance between a reference point A of the first mounting portion and a reference point B of the second mounting portion in a front-to-rear direction is L1, and a front side plane (P2) is a virtual plane passing through the reference point A, extending in a vertical direction, and perpendicular to the longitudinal center plane (P1); The engine (25) comprises at least two third mounting parts, the third mounting parts are flexibly connected to the main frame (13) and surrounded by the rear sub-frame (12), the at least two third mounting parts include a front third mounting part having the smallest distance from the front side plane (P2) in the front-to-back direction, and a rear third mounting part having the largest distance from the front side plane (P2) in the front-to-back direction, and the distance between a reference point C of the front third mounting part and a reference point D of the rear third mounting part in the front-to-back direction is L2; 0.12≤L2 / L1≤0.

48.

2. The all-terrain vehicle according to claim 1, characterized in that: The all-terrain vehicle comprises a flexible connector connected between the third mounting portion and the vehicle frame (10).

3. The all-terrain vehicle according to claim 2, characterized in that: The all-terrain vehicle further comprises a first bolt (411) and a first nut (412); the flexible connector comprises a first elastic body (311), a first connector (312) and a second connector (313); the first connector (312) and the second connector (313) are respectively connected to opposite sides of the first elastic body (311); the third mounting portion of the engine (25) comprises a first connecting through hole; the two flexible connectors are respectively located at opposite ends of the first connecting through hole; the first bolt (411) passes through the first connector (312) of one flexible connector, the first connecting through hole and the first connector (312) of another flexible connector in sequence and is then connected to the first nut (412); the second connectors (313) of the two flexible connectors are respectively connected to the vehicle frame (10).

4. The all-terrain vehicle according to claim 2, characterized in that: The all-terrain vehicle further comprises a second bolt (421) and a second nut (422); the third mounting portion of the engine (25) comprises a second connecting through hole; the vehicle frame (10) comprises a third connecting through hole; the flexible connector comprises a supporting cylinder (321) and a second elastic body (322); the second elastic body (322) is sleeved outside the supporting cylinder (321); the flexible connector passes through the second connecting through hole and the third connecting through hole; the second elastic body (322) is located in the second connecting through hole and the third connecting through hole; the second bolt (421) passes through the inner hole of the supporting cylinder (321) and is connected to the second nut (422).

5. The all-terrain vehicle according to claim 2, characterized in that: The all-terrain vehicle further comprises a third bolt (431) and a third nut, the flexible connector comprises a base plate (331) and a third elastic body (332) which are connected to each other, the third elastic body (332) comprises a fourth connecting through hole, the third bolt (431) passes through the frame (10) and the fourth connecting through hole and is connected to the third nut, and the base plate (331) and the third mounting portion of the engine (25) are detachably connected.

6. The all-terrain vehicle according to claim 1, characterized in that: The front suspension system further comprises a left front rocker arm assembly (51), a right front rocker arm assembly (52), a left steering knuckle (531), a right steering knuckle (532) and a front stabilizer bar (55), the left steering knuckle (531) being connected to the left front wheel of the all-terrain vehicle, and the right steering knuckle (532) being connected to the right front wheel of the all-terrain vehicle; The inner end of the left front rocker arm assembly (51) is pivotally connected to the front sub-frame (11), and the outer end is rotationally connected to the left steering knuckle (531); the inner end of the right front rocker arm assembly (52) is pivotally connected to the front sub-frame (11), and the outer end is rotationally connected to the right steering knuckle (532); The front stabilizer bar (55) is C-shaped with the C-shaped opening facing forward. The front stabilizer bar (55) is located in front of the front sub-frame (11). The middle part of the front stabilizer bar (55) is rotatably connected to the front sub-frame (11). The left and right ends of the front stabilizer bar (55) are respectively connected to the left front rocker arm assembly (51) and the right front rocker arm assembly (52).

7. The all-terrain vehicle according to claim 6, characterized in that: The left front rocker arm assembly (51) comprises a left front upper rocker arm (511) and a left front lower rocker arm (512), and the right front rocker arm assembly (52) comprises a right front upper rocker arm (521) and a right front lower rocker arm (522); the upper end of the left front shock absorber (21) is connected to the front sub-frame (11), and the lower end is connected to the left front upper rocker arm (511); the upper end of the right front shock absorber (22) is connected to the front sub-frame (11), and the lower end is connected to the right front upper rocker arm (521).

8. The all-terrain vehicle according to claim 1, characterized in that: The rear suspension system comprises a rear stabilizer bar (56), a left rear swing arm (71), a right rear swing arm (72), a left rear wheel mounting seat (731) and a right rear wheel mounting seat (732), wherein the left rear wheel mounting seat (731) is connected to the left rear wheel of the all-terrain vehicle, and the right rear wheel mounting seat (732) is connected to the right rear wheel of the all-terrain vehicle; The front end of the left rear swing arm (71) is pivotally connected to the main frame (13) of the frame (10), and the rear end is connected to the left rear wheel mounting seat (731); the front end of the right rear swing arm (72) is pivotally connected to the main frame (13) of the frame (10), and the rear end is connected to the right rear wheel mounting seat (732); the middle part of the rear stabilizer bar (56) is rotationally connected to the rear sub-frame (12), and the left and right ends of the rear stabilizer bar (56) are respectively connected to the left rear swing arm (71) and the right rear swing arm (72).

9. The all-terrain vehicle according to claim 8, characterized in that: The rear suspension system also includes a left rear tie rod (741) and a right rear tie rod (742), wherein the two ends of the left rear tie rod (741) are respectively rotatably connected to the main frame (13) and the rear end of the left rear swing arm (71), and the two ends of the right rear tie rod (742) are respectively rotatably connected to the main frame (13) and the rear end of the right rear swing arm (72).

10. The all-terrain vehicle according to claim 8, characterized in that: The engine (25) is located in a virtual space defined by the outer contour of the rear sub-frame (12); the rear stabilizer bar (56) includes a rear connecting portion rotatably connected to the rear sub-frame (12); and the rear connecting portion is located in front of the engine (25).

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