Two-wheeled all-terrain vehicle

Abstract

The utility model provides a two-wheeled all-terrain vehicle which comprises a vehicle frame, an engine, a left rear shock absorber and a right rear shock absorber, a longitudinal central plane is a virtual plane which extends in the vertical direction and coincides with the left and right central lines of the vehicle frame, and a bottom plane is perpendicular to the longitudinal central plane; the projection center of the connecting part of the left rear shock absorber and the frame on the bottom plane is a point D, the projection center of the connecting part of the right rear shock absorber and the frame on the bottom plane is a point C, the first plane passes through the point D, the second plane passes through the point C, and the first plane and the second plane are perpendicular to the longitudinal center plane; the engine is flexibly connected with the frame through a first connecting piece, and the projection center of the first connecting piece on the bottom plane is a point T; each point T is located between the first plane and the second plane, and at least one point T is distributed on each of the left side and the right side of the longitudinal center plane. In this way, the purposes of reducing vehicle vibration and improving the driving comfort are achieved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a two-wheeled 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] For two-wheeled all-terrain vehicles, vibration mainly comes from the vibration of the engine and the road surface, which is transmitted to the frame and handlebars through the shock absorber. The driver and passengers sit on the frame, and the subjective feeling of the vehicle's vibration comes from the frame, handlebars and pedals. Therefore, it is very important to optimize the design so that the all-terrain vehicle has better shock absorption performance and improves driving comfort. Utility Model Content

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

[0005] The present application provides a two-wheeled all-terrain vehicle, comprising a frame, an engine, a left rear shock absorber and a right rear shock absorber connected to the frame, a longitudinal center plane is a virtual plane extending in the up-down direction and coinciding with the left-right center line of the frame, and a bottom plane is a virtual plane extending in the front-back direction and perpendicular to the longitudinal center plane below the frame; the projection center of the connection part between the upper end of the left rear shock absorber and the frame on the bottom plane is point D, a first plane is a virtual plane parallel to the longitudinal center plane and passing through point D; the projection center of the connection part between the upper end of the right rear shock absorber and the frame on the bottom plane is point C, and a second plane is a virtual plane parallel to the longitudinal center plane and passing through point C; the two-wheeled all-terrain vehicle also includes a plurality of first connecting members, the engine is flexibly connected to the frame through the first connecting members, and the projection center of the first connecting member on the bottom plane is point T; each point T is located between the first plane and the second plane, and at least one point T is distributed on the left and right sides of the longitudinal center plane.

[0006] Optionally, the two-wheeled all-terrain vehicle also includes a handlebar, a steering rod and a second connecting member, the steering rod is rotatably connected to the frame so as to be able to rotate around its own axis, the handlebar is connected to the upper end of the steering rod through the second connecting member, and on the bottom plane, line segment AB is perpendicular to the longitudinal center plane and passes through the projection center of the second connecting member on the bottom plane, line segment AB intersects with the first plane, the longitudinal center plane, and the second plane at points A, F, and B respectively, and line segment AB is parallel to line segment CD; the projection of the center line of the crankshaft of the engine on the bottom plane intersects with the first plane, the longitudinal center plane, and the second plane at points H, E, and G respectively; the number of the first connecting members is at least four, and there is at least one point T in the rectangular area BFEG, the rectangular area CGEK, the rectangular area AFEH, and the rectangular area DHEK.

[0007] Optionally, the second connecting member includes a base and a cover body, the base is connected to the upper end of the handlebar, the base has a first groove, the cover body has a second groove, the cover body and the base are detachably connected, and the handlebar is clamped between the first groove and the second groove.

[0008] Optionally, the two-wheeled all-terrain vehicle further comprises a limiting structure, wherein the limiting structure is arranged between the handlebar and the base, or between the handlebar and the cover body, and the limiting structure can stop the handlebar from moving relative to the steering rod.

[0009] Optionally, the all-terrain vehicle also includes a first bearing and a second bearing, the inner ring of the first bearing is sleeved outside the steering rod and is circumferentially limitedly connected to the steering rod, and the outer ring of the first bearing is connected to the upper end of the frame; the inner ring of the second bearing is sleeved outside the steering rod and is circumferentially limitedly connected to the steering rod, and the outer ring of the second bearing is connected to the lower end of the frame.

[0010] Optionally, the all-terrain vehicle also includes an axle and a brake member, the axle is mounted on the frame, the inner end of the brake member is rotatably connected to the axle, and the outer end of the brake member can rotate relative to the axle to reciprocate between a release position and a braking position, wherein the inner end of the brake member projected on the bottom plane is located in the rectangular area BFEG, and the outer end of the projection is located outside the projection area of ​​the frame on the bottom plane.

[0011] Optionally, the all-terrain vehicle further comprises a bushing, wherein the bushing is sleeved outside the axle body, the brake member is sleeved outside the bushing, and the brake member and the bushing are circumferentially limitedly connected; wherein the axle body and the brake member are both made of metal, and the bushing is made of non-metallic material.

[0012] Optionally, the bushing includes a small diameter section and a large diameter section; the all-terrain vehicle also includes a stopper, one end of the shaft body is connected to the frame, and the other end is connected to the stopper; two bushings are sleeved on the shaft body, one of which is at an end close to the stopper, and the small diameter section of the bushing is located between the brake and the shaft body, and the large diameter section is located between the brake and the stopper; the other bushing is at an end close to the frame, and the small diameter section of the other bushing is located between the brake and the shaft body, and the large diameter section is located between the brake and the frame.

[0013] Optionally, the right rear shock absorber and the left rear shock absorber have the same structure and are symmetrically distributed about the longitudinal center plane; the left rear shock absorber includes two ear plates distributed at intervals, the frame includes a mounting portion, the mounting portion extends between the two ear plates, a first bolt passes through the two ear plates and the mounting portion and is connected to a first nut, and the first bolt extends in the front-to-back direction.

[0014] Optionally, the frame includes a left side frame and a right side frame symmetrical about the longitudinal center plane, the left side frame includes an upper left longitudinal beam, a lower left longitudinal beam, a first left tie rod and a second left tie rod, the upper left longitudinal beam and the lower left longitudinal beam are spaced apart in the up-down direction, the first left tie rod and the second left tie rod are spaced apart in the front-back direction, two ends of the first left tie rod are respectively connected to the upper left longitudinal beam and the lower left longitudinal beam, and two ends of the second left tie rod are respectively connected to the upper left longitudinal beam and the lower left longitudinal beam; the projections of the upper left longitudinal beam, the lower left longitudinal beam, the first left tie rod and the second left tie rod on the first plane surround the projection of the engine on the first plane.

[0015] Based on the above-mentioned all-terrain vehicle provided by the present application, firstly, the connecting part of the engine is flexibly connected to the frame, thereby reducing the adverse effect of the engine vibration on the frame vibration; secondly, the connecting part of the engine is completely located between the left rear shock absorber and the right rear shock absorber in the left and right directions, which is conducive to achieving the purpose of reducing vehicle vibration and improving driving comfort. 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 schematic top view of a two-wheeled all-terrain vehicle provided by an exemplary embodiment of the present application, wherein some structures are not shown.

[0018] Figure 2 It is a left side schematic diagram of a two-wheeled all-terrain vehicle provided by an exemplary embodiment of the present application, wherein some structures are not shown.

[0019] Figure 3 It is a schematic rear view of a two-wheeled all-terrain vehicle provided by an exemplary embodiment of the present application, wherein some structures are not shown.

[0020] Figure 4 It is a front view schematic diagram of a two-wheeled all-terrain vehicle provided by an exemplary embodiment of the present application, wherein some structures are not shown.

[0021] Figure 5 is based on Figure 2 A partial enlarged view of .

[0022] Figure 6 It is a top view schematic diagram of some local structures of a two-wheeled all-terrain vehicle provided by an exemplary embodiment of the present application.

[0023] Figure 7 It is a top view schematic diagram of some other partial structures of a two-wheeled all-terrain vehicle provided by an exemplary embodiment of the present application. Figure 8 It is a schematic structural diagram of a rear shock absorber in an all-terrain vehicle provided by an exemplary embodiment of the present application.

[0024] Reference numerals:

[0025] 10-frame, 11-upper left longitudinal beam, 12-lower left longitudinal beam, 13-first left tie rod, 14-second left tie rod;

[0026] 20-engine, 31-left rear shock absorber, 32-right rear shock absorber;

[0027] 41-handlebar, 42-steering rod;

[0028] 51-first connecting member, 52-second connecting member, 521-base, 522-cover, 53-first bearing, 54-second bearing, 55-first bracket, 56-second bracket, 571-first bolt, 572-first nut;

[0029] 61- brake member, 62- bushing, 63- stop member, 64- foot pedal;

[0030] P1 - first plane, P2 - second plane, P0 - longitudinal center plane, M - bottom plane. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] The present application provides a two-wheeled all-terrain vehicle, referring to Figures 1 to 3 , including a frame 10, and an engine 20, a left rear shock absorber 31 and a right rear shock absorber 32 connected to the frame 10, a longitudinal center plane P0 is a virtual plane extending in the up-down direction and coinciding with the left-right center line of the frame 10, a bottom plane M is a virtual plane located below the frame 10, extending in the front-back direction and perpendicular to the longitudinal center plane P0; the projection center of the connection part between the upper end of the left rear shock absorber 31 and the frame 10 on the bottom plane M is point D, and a first plane P1 is a virtual plane parallel to the longitudinal center plane P0 and passing through the point D The projection center of the connection part between the upper end of the right rear shock absorber 32 and the frame 10 on the bottom plane M is point C, and the second plane P2 is a virtual plane parallel to the longitudinal center plane P0 and passing through the point C; the two-wheeled all-terrain vehicle also includes a plurality of first connecting members 51, the engine 20 is flexibly connected to the frame 10 through the first connecting members 51, and the projection center of the first connecting member 51 on the bottom plane M is point T; each point T is located between the first plane P1 and the second plane P2, and there is at least one point T distributed on the left and right sides of the longitudinal center plane P0. Point T is not shown in the figure.

[0035] It should be clarified that the left and right center lines of the frame 10 refer to a virtual straight line extending in the front-to-back direction and located at the center of the frame 10 in the left-to-right direction. The "up and down" defined in this application are the up and down in the direction of gravity, and the "front and back" are defined based on the front and rear of the two-wheeled all-terrain vehicle, with the front in front and the rear in the back, and the horizontal plane is perpendicular to the up and down direction. 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 bottom plane M is perpendicular to the longitudinal center plane P0, and the longitudinal center plane P0 is parallel to the direction of gravity.

[0036] Through the above technical solution, firstly, the connection part of the engine 20 is flexibly connected to the frame 10, so that the adverse effect of the vibration of the engine 20 on the vibration of the frame 10 can be reduced; secondly, the connection part of the engine 20 is all located between the left rear shock absorber 31 and the right rear shock absorber 32 in the left and right directions, which is conducive to achieving the purpose of reducing vehicle vibration and improving driving comfort.

[0037] In one possible embodiment, reference Figure 1 and Figure 4 The two-wheeled all-terrain vehicle also includes a handlebar 41, a steering rod 42 and a second connecting member 52. The steering rod 42 is rotatably connected to the frame 10 so as to be rotatable around its own axis. The handlebar 41 is connected to the upper end of the steering rod 42 through the second connecting member 52. On the bottom plane M, a line segment AB is perpendicular to the longitudinal center plane P0 and passes through the projection center of the second connecting member 52 on the bottom plane M. The line segment AB intersects the first plane P1, the longitudinal center plane P0, and the second plane P2 at points A, F, and B respectively, and the line segment AB is parallel to the line segment CD; the projection of the crankshaft centerline of the engine 20 on the bottom plane M intersects the first plane P1, the longitudinal center plane P0, and the second plane P2 at points H, E, and G respectively; the number of the first connecting members 51 is at least four, and there is at least one point T in the rectangular area BFEG, the rectangular area CGEK, the rectangular area AFEH, and the rectangular area DHEK.

[0038] Through the above technical solution, the center of gravity of the engine 20 is close to point E, and the connection parts of the engine 20 are roughly evenly dispersed around point E. This technical solution divides the frame 10 into four different areas based on the connection positions of the handlebar 41, the rear shock absorber and the frame 10 with point E as the center, and the connection parts of the engine 20 are provided in these four areas, which is conducive to achieving the purpose of reducing vehicle vibration and improving driving comfort.

[0039] Of course, the two-wheeled all-terrain vehicle also includes a front wheel, which is connected to the lower end of the steering rod 42. By turning the handlebar 41, the front wheel can be driven to rotate through the steering rod 42 to achieve the purpose of adjusting the traveling direction of the two-wheeled all-terrain vehicle. The front wheel is not shown in the figure.

[0040] In one possible implementation, reference Figure 4 , Figure 5 and Figure 6 The second connecting member 52 includes a base 521 and a cover 522, wherein the base 521 is connected to the upper end of the handlebar 41, the base 521 has a first groove, the cover 522 has a second groove, the cover 522 and the base 521 are detachably connected, and the handlebar 41 is clamped between the first groove and the second groove. Based on this technical solution, the handlebar 41 and the steering rod 42 can be conveniently connected together so that the handlebar 41 can drive the rotating rod to rotate.

[0041] In one example, the two-wheeled all-terrain vehicle also includes a limiting structure, which is arranged between the handlebar 41 and the base 521, or between the handlebar 41 and the cover body 522, and the limiting structure can stop the handlebar 41 from moving relative to the steering rod 42.

[0042] In one example, the limiting structure may include a limiting protrusion and a limiting groove that cooperate with each other, wherein the limiting protrusion is arranged on the base 521 or the cover body 522, and the limiting groove is arranged on the handlebar 41; or vice versa, the limiting groove is arranged on the base 521 or the cover body 522, and the limiting protrusion is arranged on the handlebar 41.

[0043] In one example, reference Figure 6 The base 521 and the cover 522 can be connected together by bolts and nuts.

[0044] In one example, reference Figure 6 The second connecting member 52 may include a base 521 and two covers 522, and the two covers 522 are respectively connected to the two ends of the base 521. Further, the two covers 522 may be symmetrical about the longitudinal center plane P0, and the center line of the steering handle is located on the longitudinal center plane P0.

[0045] refer to Figure 4 , Figure 5 and Figure 6 The all-terrain vehicle also includes a first bearing 53 and a second bearing 54, the inner ring of the first bearing 53 is sleeved outside the steering rod 42 and is circumferentially limitedly connected to the steering rod 42, and the outer ring of the first bearing 53 is connected to the upper end of the frame 10; the inner ring of the second bearing 54 is sleeved outside the steering rod 42 and is circumferentially limitedly connected to the steering rod 42, and the outer ring of the second bearing 54 is connected to the lower end of the frame 10.

[0046] Based on this technical solution, it can be known that the first bearing 53 and the second bearing 54 are spaced apart at the upper end and the lower end of the frame 10, so the steering rod 42 can smoothly rotate around its own axis relative to the frame 10 through the first bearing 53 and the second bearing 54, so that the front wheel can be driven to steer under the drive of the handlebar 41. Among them, the inner ring of the first bearing 53 can be interference fit with the steering rod 42, and the inner ring of the first bearing 53 can be interference fit with the steering rod 42.

[0047] The all-terrain vehicle further includes a first bracket 55, the left and right ends of which are respectively connected to the frame 10, and the outer ring of the first bearing 53 is fixed between the first bracket 55 and the frame 10. The all-terrain vehicle further includes a second bracket 56, the front end of which is connected to the outer ring of the second bearing 54, and the rear end of which is connected to the frame 10.

[0048] In one possible embodiment, reference Figure 4 and Figure 7 The all-terrain vehicle further comprises an axle and a brake member 61, wherein the axle is mounted on the frame 10, the inner end of the brake member 61 is rotatably connected to the axle, and the outer end of the brake member 61 can rotate relative to the axle to reciprocate between the release position and the brake position, wherein the inner end of the brake member 61 projected on the bottom plane M is located in the rectangular area BFEG, and the outer end of the projection is located outside the projection area of ​​the frame 10 on the bottom plane M. Based on this technical solution, the driver can achieve the purpose of braking by applying an external force to the outer end of the brake member 61; and release the braking state by canceling the force applied to the outer end of the brake member 61. wherein, the outer end of the brake member 61 projected on the bottom plane M is outside the projection area of ​​the frame 10 on the bottom plane M, so that the brake member 61 extends out of the frame 10 in the left and right directions, thereby facilitating the driver to operate the brake member 61.

[0049] For further reference, Figure 7 The all-terrain vehicle further includes a bushing 62, which is sleeved outside the shaft body, and the brake member 61 is sleeved outside the bushing 62, and the brake member 61 and the bushing 62 are circumferentially limitedly connected; wherein the shaft body and the brake member 61 are made of metal, and the bushing 62 is made of non-metallic material. In this way, the brake member 61 and the bushing 62 can rotate around the shaft body; the bushing 62 can play a buffering role between the shaft body and the brake member 61 to avoid direct contact between the shaft body and the brake member 61. wherein the bushing 62 can be made of nylon, which has good wear resistance.

[0050] In one example, the bushing 62 includes a small diameter section and a large diameter section; the all-terrain vehicle also includes a stopper 63, one end of the shaft body is connected to the frame 10, and the other end is connected to the stopper 63; two bushings 62 are sleeved on the shaft body, one of the bushings 62 is at one end close to the stopper 63, and the small diameter section of the bushing 62 is located between the brake 61 and the shaft body, and the large diameter section is located between the brake 61 and the stopper 63; the other bushing 62 is at one end close to the frame 10, and the small diameter section of the bushing 62 is located between the brake 61 and the shaft body, and the large diameter section is located between the brake 61 and the frame 10. Based on this technical solution, the bushing 62 can not only separate the brake 61 from the shaft body, but also separate the brake 61 from the frame 10, and separate the brake 61 from the stopper 63. At the same time, the bushing 62 and the brake member 61 are also restricted between the stopper 63 and the frame 10. The bushing 62 here can be understood as a T-shaped sleeve, including a section with a larger outer diameter and a section with a smaller outer diameter, that is, a large diameter section and a small diameter section; but the inner diameter of the inner hole of the bushing 62 is consistent at all locations.

[0051] The bushing 62 can be sleeved on the shaft body with clearance fit, so that the bushing 62 can rotate around the shaft body; the small diameter section of the bushing 62 can be interference fit with the inner hole of the stopper 63 to achieve a circumferential limit connection between the two. In this way, the bushing 62 and the brake member 61 can rotate synchronously. The stopper 63 can be an annular structure sleeved on the shaft body.

[0052] In one example, reference Figure 7 The all-terrain vehicle further includes a foot pedal 64, which is located behind the brake member 61 and outside the frame 10. With this arrangement, when riding, the driver's feet can be placed on the foot pedal 64, and when braking is required, the driver can brake by stepping on the brake member 61 with the forefoot.

[0053] In addition, the vehicle frame 10 includes a left side frame and a right side frame symmetrical about the longitudinal center plane P0, the left side frame includes an upper left longitudinal beam 11, a lower left longitudinal beam 12, a first left tie rod 13 and a second left tie rod 14, the upper left longitudinal beam 11 and the lower left longitudinal beam 12 are spaced apart in the up-down direction, the first left tie rod 13 and the second left tie rod 14 are spaced apart in the front-back direction, the two ends of the first left tie rod 13 are respectively connected to the upper left longitudinal beam 11 and the lower left longitudinal beam 12, and the two ends of the second left tie rod 14 are respectively connected to the upper left longitudinal beam 11 and the lower left longitudinal beam; the projections of the upper left longitudinal beam 11, the lower left longitudinal beam 12, the first left tie rod 13 and the second left tie rod 14 on the second plane P2 surround the projection of the engine 20 on the second plane P2. Based on this technical solution, it can be known that the area surrounded by the upper left longitudinal beam 11, the lower left longitudinal beam 12, the first left tie rod 13 and the second left tie rod 14 is larger than the outer dimensions of the engine 20. The engine 20 can be placed in the frame 10 through this area, which is easy to operate.

[0054] Of course, the frame 10 may also include a crossbeam connected between the left frame and the right frame, the crossbeam extending in the left-right direction. In this way, the frame 10 has a stable structure, and the engine 20 is located in the space defined by the frame 10 and is protected by the frame 10.

[0055] In one example, the right side frame includes a right lower longitudinal beam, the left lower longitudinal beam 12 and the right lower longitudinal beam are symmetrical about the longitudinal center plane P0; at least one of the first connecting members 51 is connected between the left lower longitudinal beam 12 and the engine 20, and at least one of the first connecting members 51 is connected between the right lower longitudinal beam and the engine 20. In this way, the center of gravity of the engine 20 is located between the left side frame and the right side frame, which is beneficial to the balance and stability of the whole vehicle; at the same time, it is also beneficial to make the vibration amplitudes of the left side frame and the right side frame roughly the same, so that the riding comfort of the driver and passengers is better.

[0056] In a possible embodiment, the upper end of the left rear shock absorber 31 is rotatably connected to the frame 10 around an axis extending in the front-rear direction, and the lower end is connected to one side of the rear wheel. Figure 8 The rear shock absorber includes two ear plates that are spaced apart, and the frame 10 includes a mounting portion that extends between the two ear plates. A first bolt 571 extending in the front-to-rear direction passes through the two ear plates and the mounting portion and is connected to a first nut 572.

[0057] The right rear shock absorber 32 has the same structure as the left rear shock absorber and is symmetrically distributed about the longitudinal center plane P0. The connection mode between the right rear shock absorber 32 and the frame 10 is the same as the connection mode between the left rear shock absorber and the frame 10.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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. A two-wheeled all-terrain vehicle, comprising a frame (10), an engine (20), a left rear shock absorber (31) and a right rear shock absorber (32) connected to the frame (10), characterized in that: The longitudinal center plane (P0) is a virtual plane extending in the up-down direction and coinciding with the left-right center line of the frame (10); the bottom plane (M) is a virtual plane located below the frame (10), extending in the front-back direction and perpendicular to the longitudinal center plane (P0); The projection center of the connection portion between the upper end of the left rear shock absorber (31) and the vehicle frame (10) on the bottom plane (M) is point D, and the first plane (P1) is a virtual plane parallel to the longitudinal center plane (P0) and passing through the point D; The projection center of the connection portion between the upper end of the right rear shock absorber (32) and the vehicle frame on the bottom plane (M) is point C, and the second plane (P2) is a virtual plane parallel to the longitudinal center plane (P0) and passing through point C; The two-wheeled all-terrain vehicle further comprises a plurality of first connecting members (51), the engine (20) being flexibly connected to the vehicle frame (10) via the first connecting members (51), the projection center of the first connecting members (51) on the bottom plane (M) being point T; each point T is located between the first plane (P1) and the second plane (P2), and at least one point T is distributed on the left and right sides of the longitudinal center plane (P0).

2. The two-wheeled all-terrain vehicle according to claim 1, characterized in that: The two-wheeled all-terrain vehicle also includes a handlebar (41), a steering rod (42) and a second connecting member (52). The steering rod (42) is rotatably connected to the frame (10) so as to be rotatable around its own axis. The handlebar (41) is connected to the upper end of the steering rod (42) through the second connecting member (52). On the bottom plane (M), a line segment AB is perpendicular to the longitudinal center plane (P0) and passes through the projection center of the second connecting member (52) on the bottom plane (M). The line segment AB intersects the first plane (P1), the longitudinal center plane (P0) and the second plane (P2) at points A, F and B respectively. The line segment AB is parallel to the line segment CD. The projection of the crankshaft centerline of the engine (20) on the bottom plane (M) intersects the first plane (P1), the longitudinal center plane (P0), and the second plane (P2) at points H, E, and G, respectively; The number of the first connecting members (51) is at least four, and there is at least one point T in each of the rectangular area BFEG, the rectangular area CGEK, the rectangular area AFEH and the rectangular area DHEK.

3. The two-wheeled all-terrain vehicle according to claim 2, characterized in that: The second connecting member (52) comprises a base (521) and a cover body (522); the base (521) is connected to the upper end of the handlebar (41); the base (521) has a first groove; the cover body (522) has a second groove; the cover body (522) and the base (521) are detachably connected; and the handlebar (41) is clamped between the first groove and the second groove.

4. The two-wheeled all-terrain vehicle according to claim 3, characterized in that: The two-wheeled all-terrain vehicle further comprises a limiting structure, wherein the limiting structure is arranged between the handlebar (41) and the base (521), or between the handlebar (41) and the cover body (522), and the limiting structure can stop the handlebar (41) from moving relative to the steering rod (42).

5. The two-wheeled all-terrain vehicle according to claim 2, characterized in that: The all-terrain vehicle further comprises a first bearing (53) and a second bearing (54), wherein the inner ring of the first bearing (53) is sleeved outside the steering rod (42) and is circumferentially position-limitedly connected to the steering rod (42), and the outer ring of the first bearing (53) is connected to the upper end of the frame (10); the inner ring of the second bearing (54) is sleeved outside the steering rod (42) and is circumferentially position-limitedly connected to the steering rod (42), and the outer ring of the second bearing (54) is connected to the lower end of the frame (10).

6. The two-wheeled all-terrain vehicle according to claim 2, characterized in that: The all-terrain vehicle also includes an axle and a brake member (61), wherein the axle is mounted on the frame (10), the inner end of the brake member (61) is rotatably connected to the axle, and the outer end of the brake member (61) can rotate relative to the axle to reciprocate between a release position and a brake position, wherein the inner end of the brake member (61) projected on the bottom plane (M) is located in a rectangular area BFEG, and the outer end of the projection is located outside the projection area of ​​the frame (10) on the bottom plane (M).

7. The two-wheeled all-terrain vehicle according to claim 6, characterized in that: The all-terrain vehicle further comprises a bushing (62), wherein the bushing (62) is sleeved outside the shaft body, the brake component (61) is sleeved outside the bushing (62), and the brake component (61) and the bushing (62) are circumferentially limitedly connected; wherein the shaft body and the brake component (61) are both made of metal, and the bushing (62) is made of non-metallic material.

8. The two-wheeled all-terrain vehicle according to claim 7, characterized in that: The bushing (62) includes a small diameter section and a large diameter section; the all-terrain vehicle also includes a stopper (63); one end of the shaft body is connected to the vehicle frame (10), and the other end is connected to the stopper (63); Two bushings (62) are sleeved on the shaft body, wherein one of the bushings (62) is located at one end close to the stopper (63), and the small diameter section of the bushing (62) is located between the brake (61) and the shaft body, and the large diameter section is located between the brake (61) and the stopper (63); the other bushing (62) is located at one end close to the frame (10), and the small diameter section of the bushing (62) is located between the brake (61) and the shaft body, and the large diameter section is located between the brake (61) and the frame (10).

9. The two-wheeled all-terrain vehicle according to claim 2, characterized in that: The right rear shock absorber (32) and the left rear shock absorber (31) have the same structure and are symmetrically distributed about the longitudinal center plane (P0); the left rear shock absorber (31) includes two ear plates distributed at intervals, the frame (10) includes a mounting portion, the mounting portion extends between the two ear plates, a first bolt (571) passes through the two ear plates and the mounting portion and is connected to a first nut (572), and the first bolt (571) extends in the front-rear direction.

10. The two-wheeled all-terrain vehicle according to claim 1, characterized in that: The vehicle frame (10) comprises a left side frame and a right side frame symmetrical about the longitudinal center plane (P0), the left side frame comprises a left upper longitudinal beam (11), a left lower longitudinal beam (12), a first left tie rod (13) and a second left tie rod (14), the left upper longitudinal beam (11) and the left lower longitudinal beam (12) are spaced apart in the up-down direction, the first left tie rod (13) and the second left tie rod (14) are spaced apart in the front-back direction, two ends of the first left tie rod (13) are respectively connected to the left upper longitudinal beam (11) and the left lower longitudinal beam (12), and two ends of the second left tie rod (14) are respectively connected to the left upper longitudinal beam (11) and the left lower longitudinal beam (12); The projections of the left upper longitudinal beam (11), the left lower longitudinal beam (12), the first left tie rod (13) and the second left tie rod (14) on the second plane (P2) surround the projection of the engine (20) on the second plane (P2).

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